From 93b718af3f4823f7f6382d81ab9909b6f2e6a14a Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Thu, 25 Jun 2020 20:19:26 -0400 Subject: [PATCH 01/15] Changes to CMakeLists.txt to build Manta on macOS. --- .gitignore | 12 +++++++++ CMakeLists.txt | 72 +++++++++++++++++++++++++------------------------- 2 files changed, 48 insertions(+), 36 deletions(-) diff --git a/.gitignore b/.gitignore index 9382ee6d..e7fa89d6 100644 --- a/.gitignore +++ b/.gitignore @@ -10,3 +10,15 @@ waveletNoiseTileDouble.bin build doc tensorflow/mantaGen/datasets + +# macos +.DS_Store + +# vscode +\.vscode + +# Python +venv +__pycache__ +.ipynb_checkpoints +*.ipynb diff --git a/CMakeLists.txt b/CMakeLists.txt index 642e720a..fbfd039c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -33,8 +33,8 @@ endif() if(APPLE) if(NOT CMAKE_PREFIX_PATH) - set(CMAKE_PREFIX_PATH "/usr/local/opt/qt5/") # mac/homebrew (version independent) - #set(CMAKE_PREFIX_PATH "/home/myname/qt/5.5/clang_64") # other... + #set(CMAKE_PREFIX_PATH "/usr/local/opt/qt5/") # mac/homebrew (version independent) + set(CMAKE_PREFIX_PATH "/Users/Cesar/Qt/5.15.0/clang_64/") endif() endif() @@ -437,41 +437,41 @@ endif(DOXYGEN_FOUND) # Python # note - if configuration fails, comment out the auto block below, and manually set the following two paths: -#set(PYTHON_INCLUDE_DIRS "PYTHON_PATH/include") -#set(PYTHON_LIBRARIES "PYTHON_PATH/libs/pythonX.Y.lib/so") +set(PYTHON_INCLUDE_DIRS "/Users/Cesar/anaconda3/include/python3.7m/") +set(PYTHON_LIBRARIES "/Users/Cesar/anaconda3/lib/libpython3.7m.dylib") # auto block -if (WIN32) - # convenience override for windows, typically the auto find doesnt work, so fall back to WIN_PYTHON_PATH - find_package(PythonLibs ${PYTHON_VER_ID} QUIET) - if(NOT PYTHONLIBS_FOUND) - set(PYTHON_INCLUDE_DIRS "${WIN_PYTHON_PATH}/include") - set(PYTHON_LIBRARIES "${WIN_PYTHON_PATH}/libs/python${PYTHON_VER_ID}.lib") - endif() -else() - # try to configure from python itself first - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('INCLUDEPY'))" OUTPUT_VARIABLE PYTHON_INCLUDE_DIRS) - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LIBDIR'))" OUTPUT_VARIABLE PYTHON_LIB1) - if(APPLE) - # LDLIBRARY doesnt seem to work for Macs... - set(PYTHON_LIB2 "../Python") - else() - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LDLIBRARY'))" OUTPUT_VARIABLE PYTHON_LIB2) - endif() - set(PYTHON_LIBRARIES "${PYTHON_LIB1}/${PYTHON_LIB2}") - if(EXISTS "${PYTHON_INCLUDE_DIRS}" AND EXISTS "${PYTHON_LIBRARIES}") - message("Found python configuration") - else() - # otherwise, fall back to cmake find - if(NOT PYTHON_VERSION) - find_package(PythonLibs REQUIRED) # use any - else() - find_package(PythonLibs ${PYTHON_VER_ID} EXACT QUIET) # fixed version - endif() - if(NOT PYTHONLIBS_FOUND) - message(FATAL_ERROR "No python found, please manually set PYTHON_VERSION for cmake, or PYTHON_ paths in CMakeLists.txt") - endif() - endif() -endif() +# if (WIN32) +# # convenience override for windows, typically the auto find doesnt work, so fall back to WIN_PYTHON_PATH +# find_package(PythonLibs ${PYTHON_VER_ID} QUIET) +# if(NOT PYTHONLIBS_FOUND) +# set(PYTHON_INCLUDE_DIRS "${WIN_PYTHON_PATH}/include") +# set(PYTHON_LIBRARIES "${WIN_PYTHON_PATH}/libs/python${PYTHON_VER_ID}.lib") +# endif() +# else() +# # try to configure from python itself first +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('INCLUDEPY'))" OUTPUT_VARIABLE PYTHON_INCLUDE_DIRS) +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LIBDIR'))" OUTPUT_VARIABLE PYTHON_LIB1) +# if(APPLE) +# # LDLIBRARY doesnt seem to work for Macs... +# set(PYTHON_LIB2 "../Python") +# else() +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LDLIBRARY'))" OUTPUT_VARIABLE PYTHON_LIB2) +# endif() +# set(PYTHON_LIBRARIES "${PYTHON_LIB1}/${PYTHON_LIB2}") +# if(EXISTS "${PYTHON_INCLUDE_DIRS}" AND EXISTS "${PYTHON_LIBRARIES}") +# message("Found python configuration") +# else() +# # otherwise, fall back to cmake find +# if(NOT PYTHON_VERSION) +# find_package(PythonLibs REQUIRED) # use any +# else() +# find_package(PythonLibs ${PYTHON_VER_ID} EXACT QUIET) # fixed version +# endif() +# if(NOT PYTHONLIBS_FOUND) +# message(FATAL_ERROR "No python found, please manually set PYTHON_VERSION for cmake, or PYTHON_ paths in CMakeLists.txt") +# endif() +# endif() +# endif() # end auto block, python config done list(APPEND INCLUDE_PATHS ${PYTHON_INCLUDE_DIRS}) list(APPEND F_LIBS ${PYTHON_LIBRARIES}) From f11cd64800a65e4029ae3b02322bbe96e7b21463 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Fri, 26 Jun 2020 02:01:15 -0400 Subject: [PATCH 02/15] Able to export the positions of the particles in a BasicParticleSystem. --- .gitignore | 2 +- CMakeLists.txt | 5 +- scenes/cell-growth/export-particles.py | 77 + scenes/cell-growth/points.ipynb | 140 ++ .../cell-growth/results/particles-frame-0.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-1.txt | 1405 +++++++++++++++++ .../results/particles-frame-10.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-2.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-3.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-4.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-5.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-6.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-7.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-8.txt | 1405 +++++++++++++++++ .../cell-growth/results/particles-frame-9.txt | 1405 +++++++++++++++++ scenes/cell-growth/view-particles.ipynb | 111 ++ 16 files changed, 15787 insertions(+), 3 deletions(-) create mode 100644 scenes/cell-growth/export-particles.py create mode 100644 scenes/cell-growth/points.ipynb create mode 100644 scenes/cell-growth/results/particles-frame-0.txt create mode 100644 scenes/cell-growth/results/particles-frame-1.txt create mode 100644 scenes/cell-growth/results/particles-frame-10.txt create mode 100644 scenes/cell-growth/results/particles-frame-2.txt create mode 100644 scenes/cell-growth/results/particles-frame-3.txt create mode 100644 scenes/cell-growth/results/particles-frame-4.txt create mode 100644 scenes/cell-growth/results/particles-frame-5.txt create mode 100644 scenes/cell-growth/results/particles-frame-6.txt create mode 100644 scenes/cell-growth/results/particles-frame-7.txt create mode 100644 scenes/cell-growth/results/particles-frame-8.txt create mode 100644 scenes/cell-growth/results/particles-frame-9.txt create mode 100644 scenes/cell-growth/view-particles.ipynb diff --git a/.gitignore b/.gitignore index e7fa89d6..ca6fa304 100644 --- a/.gitignore +++ b/.gitignore @@ -21,4 +21,4 @@ tensorflow/mantaGen/datasets venv __pycache__ .ipynb_checkpoints -*.ipynb +# *.ipynb diff --git a/CMakeLists.txt b/CMakeLists.txt index fbfd039c..7458c7e3 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -33,8 +33,9 @@ endif() if(APPLE) if(NOT CMAKE_PREFIX_PATH) - #set(CMAKE_PREFIX_PATH "/usr/local/opt/qt5/") # mac/homebrew (version independent) - set(CMAKE_PREFIX_PATH "/Users/Cesar/Qt/5.15.0/clang_64/") + set(CMAKE_PREFIX_PATH "/usr/local/opt/qt5/") # mac/homebrew (version independent) + #set(CMAKE_PREFIX_PATH "/home/myname/qt/5.5/clang_64") # other... + #set(CMAKE_PREFIX_PATH "/Users/Cesar/Qt/5.15.0/clang_64/") endif() endif() diff --git a/scenes/cell-growth/export-particles.py b/scenes/cell-growth/export-particles.py new file mode 100644 index 00000000..014cdd51 --- /dev/null +++ b/scenes/cell-growth/export-particles.py @@ -0,0 +1,77 @@ +# +# NUMPY file format test +# +from manta import * + +# solver params +dim = 2 +particleNumber = 2 +res = 64 +gs = vec3(res,res,res) +if (dim==2): + gs.z=1 + particleNumber = 3 # use more particles in 2d + +s = Solver(name='main', gridSize = gs, dim=dim) +s.timestep = 0.5 + +# prepare grids and particles +flags = s.create(FlagGrid) +flags2 = s.create(FlagGrid) +vel = s.create(MACGrid) +vel2 = s.create(MACGrid) +velOld = s.create(MACGrid) +pressure = s.create(RealGrid) +pressure2 = s.create(RealGrid) +tmpVec3 = s.create(VecGrid) +pp = s.create(BasicParticleSystem) +# add velocity data to particles +pVel = pp.create(PdataVec3) +# apic part +mass = s.create(MACGrid) +pCx = pp.create(PdataVec3) +pCy = pp.create(PdataVec3) +pCz = pp.create(PdataVec3) + +# scene setup +flags.initDomain(boundaryWidth=0) +# enable one of the following +# fluidbox = Box(parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(0.4,0.6,1)) # breaking dam +fluidbox = Box(parent=s, p0=gs*vec3(0.4,0.72,0.4), p1=gs*vec3(0.6,0.92,0.6)) # centered falling block +phiInit = fluidbox.computeLevelset() +flags.updateFromLevelset(phiInit) +# phiInit is not needed from now on! + +# note, there's no resamplig here, so we need _LOTS_ of particles... +sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) + +#main loop +for t in range(20): + mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) + + # APIC + pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False) + apicMapPartsToMAC(flags=flags, vel=vel, parts=pp, partVel=pVel, cpx=pCx, cpy=pCy, cpz=pCz, mass=mass) + extrapolateMACFromWeight(vel=vel , distance=2, weight=tmpVec3) + markFluidCells(parts=pp, flags=flags) + + addGravity(flags=flags, vel=vel, gravity=(0,-0.002,0)) + + # pressure solve + setWallBcs(flags=flags, vel=vel) + solvePressure(flags=flags, vel=vel, pressure=pressure) + setWallBcs(flags=flags, vel=vel) + + # we dont have any levelset, ie no extrapolation, so make sure the velocities are valid + extrapolateMACSimple(flags=flags, vel=vel) + + # APIC velocity update + apicMapMACGridToParts(partVel=pVel, cpx=pCx, cpy=pCy, cpz=pCz, parts=pp, vel=vel, flags=flags) + + s.step() + + file_name = 'results/particles-frame-%d.txt' % s.frame + pp.save(file_name) + + + diff --git a/scenes/cell-growth/points.ipynb b/scenes/cell-growth/points.ipynb new file mode 100644 index 00000000..190faeca --- /dev/null +++ b/scenes/cell-growth/points.ipynb @@ -0,0 +1,140 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [ + { + "output_type": "display_data", + "data": { + "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "22fb85219bd643b395894b32d40222ec" + } + }, + "metadata": {} + }, + { + "output_type": "display_data", + "data": { + "text/plain": "Output()", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "d274bcf3a0c948ad8a8fd935edcfa6cc" + } + }, + "metadata": {} + } + ], + "source": [ + "import k3d\n", + "import numpy as np\n", + "\n", + "points_number = 500\n", + "positions = 50 * np.random.random_sample((points_number,3)) - 25\n", + "colors = np.random.randint(0, 0xFFFFFF, points_number)\n", + "\n", + "plot = k3d.plot()\n", + "points = k3d.points(positions.astype(np.float32), colors.astype(np.uint32), point_size=3.0, shader='flat')\n", + "plot += points\n", + "plot.display()" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": {}, + "outputs": [], + "source": [ + "plot.camera_auto_fit = False" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": {}, + "outputs": [], + "source": [ + "points.shader = '3d'" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": {}, + "outputs": [], + "source": [ + "points.shader = '3dSpecular'" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": {}, + "outputs": [], + "source": [ + "points.shader = 'mesh'" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": {}, + "outputs": [], + "source": [ + "points.mesh_detail = 5" + ] + }, + { + "cell_type": "code", + "execution_count": 7, + "metadata": {}, + "outputs": [], + "source": [ + "tmp = points.colors\n", + "points.colors = []" + ] + }, + { + "cell_type": "code", + "execution_count": 8, + "metadata": {}, + "outputs": [], + "source": [ + "points.colors = tmp" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)", + "language": "python", + "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.6-final" + } + }, + "nbformat": 4, + "nbformat_minor": 4 +} \ No newline at end of file diff --git a/scenes/cell-growth/results/particles-frame-0.txt b/scenes/cell-growth/results/particles-frame-0.txt new file mode 100644 index 00000000..996fde26 --- /dev/null +++ b/scenes/cell-growth/results/particles-frame-0.txt @@ -0,0 +1,1405 @@ +1404, pdata: 4 (0,0,4) +0: [+26.122849,+46.122944,+0.500000] , 1. 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[-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/view-particles.ipynb b/scenes/cell-growth/view-particles.ipynb new file mode 100644 index 00000000..05ea3695 --- /dev/null +++ b/scenes/cell-growth/view-particles.ipynb @@ -0,0 +1,111 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 13, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np\n", + "import k3d\n", + "import pandas as pd" + ] + }, + { + "cell_type": "code", + "execution_count": 27, + "metadata": { + "tags": [] + }, + "outputs": [ + { + "output_type": "execute_result", + "data": { + "text/plain": " position\n \n0 [+26.122849,+46.122944,+0.500000] , 1. [+0.00...\n1 [+26.453651,+46.224190,+0.500000] , 1. [+0.00...\n2 [+26.898863,+46.196522,+0.500000] , 1. [+0.00...\n3 [+26.112722,+46.452816,+0.500000] , 1. [+0.00...\n4 [+26.557117,+46.541092,+0.500000] , 1. 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" + }, + "metadata": {}, + "execution_count": 27 + } + ], + "source": [ + "df = pd.read_table('./results/particles-frame-0.txt', skiprows=1, usecols=[0,1], names=['','position'], sep=':', index_col=0)\n", + "df" + ] + }, + { + "cell_type": "code", + "execution_count": 28, + "metadata": {}, + "outputs": [ + { + "output_type": "display_data", + "data": { + "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "bbed7b1ed2124cf29489bae49f656fde" + } + }, + "metadata": {} + }, + { + "output_type": "display_data", + "data": { + "text/plain": "Output()", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "984bfc3ac728407e8362a7ae19e20f18" + } + }, + "metadata": {} + } + ], + "source": [ + "Nx, Ny = 34, 33\n", + "xmin, xmax = -3, 4\n", + "ymin, ymax = -0, 3\n", + "\n", + "x = np.linspace(xmin, xmax, Nx)\n", + "y = np.linspace(ymin, ymax, Ny)\n", + "x, y = np.meshgrid(x, y)\n", + "f = np.sin(x**2 + y**2)\n", + "\n", + "plot = k3d.plot()\n", + "plt_surface = k3d.surface(f.astype(np.float32), bounds=[xmin,xmax,ymin,ymax])\n", + "plot += plt_surface\n", + "plot.display()" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] + } + ], + "metadata": { + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.6-final" + }, + "orig_nbformat": 2, + "kernelspec": { + "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd", + "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} \ No newline at end of file From 7c686db076e0e2a994bea9b52707cc8ab8b0412e Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Wed, 1 Jul 2020 23:33:19 -0400 Subject: [PATCH 03/15] In the scene "view_particles_in_notebook.py" there is code for converting mantaflow .txt files to numpy text files. The code is commented out and will be deleted in the next commit so I wanted to keep a copy of the code in git in case I needed it in the future. --- .gitignore | 2 + scenes/cell-growth/points.ipynb | 140 -- .../cell-growth/results/particles-frame-0.txt | 1405 ----------------- .../cell-growth/results/particles-frame-1.txt | 1405 ----------------- .../results/particles-frame-10.txt | 1405 ----------------- .../cell-growth/results/particles-frame-2.txt | 1405 ----------------- .../cell-growth/results/particles-frame-3.txt | 1405 ----------------- .../cell-growth/results/particles-frame-4.txt | 1405 ----------------- .../cell-growth/results/particles-frame-5.txt | 1405 ----------------- .../cell-growth/results/particles-frame-6.txt | 1405 ----------------- .../cell-growth/results/particles-frame-7.txt | 1405 ----------------- .../cell-growth/results/particles-frame-8.txt | 1405 ----------------- .../cell-growth/results/particles-frame-9.txt | 1405 ----------------- scenes/cell-growth/view-particles.ipynb | 111 -- scenes/view_particles_in_notebook.ipynb | 132 ++ ...icles.py => view_particles_in_notebook.py} | 32 +- source/particle.cpp | 18 + source/particle.h | 4 + 18 files changed, 184 insertions(+), 15710 deletions(-) delete mode 100644 scenes/cell-growth/points.ipynb delete mode 100644 scenes/cell-growth/results/particles-frame-0.txt delete mode 100644 scenes/cell-growth/results/particles-frame-1.txt delete mode 100644 scenes/cell-growth/results/particles-frame-10.txt delete mode 100644 scenes/cell-growth/results/particles-frame-2.txt delete mode 100644 scenes/cell-growth/results/particles-frame-3.txt delete mode 100644 scenes/cell-growth/results/particles-frame-4.txt delete mode 100644 scenes/cell-growth/results/particles-frame-5.txt delete mode 100644 scenes/cell-growth/results/particles-frame-6.txt delete mode 100644 scenes/cell-growth/results/particles-frame-7.txt delete mode 100644 scenes/cell-growth/results/particles-frame-8.txt delete mode 100644 scenes/cell-growth/results/particles-frame-9.txt delete mode 100644 scenes/cell-growth/view-particles.ipynb create mode 100644 scenes/view_particles_in_notebook.ipynb rename scenes/{cell-growth/export-particles.py => view_particles_in_notebook.py} (73%) diff --git a/.gitignore b/.gitignore index ca6fa304..727f6f1d 100644 --- a/.gitignore +++ b/.gitignore @@ -10,6 +10,8 @@ waveletNoiseTileDouble.bin build doc tensorflow/mantaGen/datasets +scenes/results +scenes/frames # macos .DS_Store diff --git a/scenes/cell-growth/points.ipynb b/scenes/cell-growth/points.ipynb deleted file mode 100644 index 190faeca..00000000 --- a/scenes/cell-growth/points.ipynb +++ /dev/null @@ -1,140 +0,0 @@ -{ - "cells": [ - { - "cell_type": "code", - "execution_count": 1, - "metadata": {}, - "outputs": [ - { - "output_type": "display_data", - "data": { - "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "22fb85219bd643b395894b32d40222ec" - } - }, - "metadata": {} - }, - { - "output_type": "display_data", - "data": { - "text/plain": "Output()", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "d274bcf3a0c948ad8a8fd935edcfa6cc" - } - }, - "metadata": {} - } - ], - "source": [ - "import k3d\n", - "import numpy as np\n", - "\n", - "points_number = 500\n", - "positions = 50 * np.random.random_sample((points_number,3)) - 25\n", - "colors = np.random.randint(0, 0xFFFFFF, points_number)\n", - "\n", - "plot = k3d.plot()\n", - "points = k3d.points(positions.astype(np.float32), colors.astype(np.uint32), point_size=3.0, shader='flat')\n", - "plot += points\n", - "plot.display()" - ] - }, - { - "cell_type": "code", - "execution_count": 2, - "metadata": {}, - "outputs": [], - "source": [ - "plot.camera_auto_fit = False" - ] - }, - { - "cell_type": "code", - "execution_count": 3, - "metadata": {}, - "outputs": [], - "source": [ - "points.shader = '3d'" - ] - }, - { - "cell_type": "code", - "execution_count": 4, - "metadata": {}, - "outputs": [], - "source": [ - "points.shader = '3dSpecular'" - ] - }, - { - "cell_type": "code", - "execution_count": 5, - "metadata": {}, - "outputs": [], - "source": [ - "points.shader = 'mesh'" - ] - }, - { - "cell_type": "code", - "execution_count": 6, - "metadata": {}, - "outputs": [], - "source": [ - "points.mesh_detail = 5" - ] - }, - { - "cell_type": "code", - "execution_count": 7, - "metadata": {}, - "outputs": [], - "source": [ - "tmp = points.colors\n", - "points.colors = []" - ] - }, - { - "cell_type": "code", - "execution_count": 8, - "metadata": {}, - "outputs": [], - "source": [ - "points.colors = tmp" - ] - }, - { - "cell_type": "code", - "execution_count": null, - "metadata": {}, - "outputs": [], - "source": [] - } - ], - "metadata": { - "kernelspec": { - "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)", - "language": "python", - "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd" - }, - "language_info": { - "codemirror_mode": { - "name": "ipython", - "version": 3 - }, - "file_extension": ".py", - "mimetype": "text/x-python", - "name": "python", - "nbconvert_exporter": "python", - "pygments_lexer": "ipython3", - "version": "3.7.6-final" - } - }, - "nbformat": 4, - "nbformat_minor": 4 -} \ No newline at end of file diff --git a/scenes/cell-growth/results/particles-frame-0.txt b/scenes/cell-growth/results/particles-frame-0.txt deleted file mode 100644 index 996fde26..00000000 --- a/scenes/cell-growth/results/particles-frame-0.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+46.122944,+0.500000] , 1. 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[+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -796: [+30.544125,+53.445335,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -797: [+30.853552,+53.506187,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -798: [+30.207396,+53.861546,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -799: [+30.546389,+53.815121,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -800: [+30.827963,+53.896729,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -801: [+31.101477,+53.126698,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -802: [+31.503988,+53.202583,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -803: [+31.771484,+53.195152,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -804: [+31.135811,+53.488686,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -805: [+31.470810,+53.455563,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -806: [+31.848373,+53.503414,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -807: [+31.141485,+53.789848,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -808: [+31.527235,+53.872005,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -809: [+31.894653,+53.779457,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -810: [+32.126587,+53.137691,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -811: [+32.521114,+53.231148,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -812: [+32.859058,+53.193291,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -813: [+32.133949,+53.506828,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -814: [+32.442291,+53.462196,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -815: [+32.892700,+53.436188,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -816: [+32.132492,+53.845043,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -817: [+32.467842,+53.834209,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -818: [+32.840862,+53.814804,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -819: [+33.201447,+53.173927,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -820: [+33.558567,+53.191292,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+53.217632,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+53.469772,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+53.564049,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+53.491676,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+53.862946,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -826: [+33.506756,+53.779354,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -827: [+33.801613,+53.885117,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -828: [+34.110409,+53.153065,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -829: [+34.439758,+53.222469,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -830: [+34.875191,+53.168270,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -831: [+34.206432,+53.554363,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -832: [+34.512966,+53.485577,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -833: [+34.885456,+53.532558,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -834: [+34.219738,+53.806896,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -835: [+34.435211,+53.890411,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+53.848854,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+53.186768,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+53.213520,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+53.140560,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+53.455799,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+53.507538,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+53.552536,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+53.776527,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+53.859222,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+53.818336,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+53.124413,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+53.193928,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+53.183037,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+53.546967,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+53.549915,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+53.495792,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+53.852169,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+53.850498,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+53.876457,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+53.202755,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+53.162029,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+53.118725,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+53.454281,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+53.465240,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+53.497383,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+53.798267,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+53.797962,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+53.849411,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+54.126938,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+54.195629,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+54.117855,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+54.478477,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+54.502048,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+54.501354,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+54.813816,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+54.815281,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+54.871952,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+54.106087,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+54.135098,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+54.132587,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+54.516033,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+54.557106,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+54.467541,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+54.841846,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+54.773533,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+54.830524,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+54.152237,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+54.225052,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+54.204712,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+54.503342,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+54.545261,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+54.557003,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+54.804756,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+54.794430,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+54.771698,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+54.224411,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+54.127312,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+54.115250,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+54.473492,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+54.527569,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+54.507908,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+54.813065,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+54.898220,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+54.853012,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+54.121845,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+54.144268,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+54.174557,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+54.526585,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+54.473900,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+54.518005,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -906: [+30.149263,+54.847099,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -907: [+30.548489,+54.802029,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -908: [+30.806307,+54.793514,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -909: [+31.164091,+54.143875,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -910: [+31.566116,+54.134258,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -911: [+31.829193,+54.213333,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -912: [+31.196243,+54.550507,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -913: [+31.566414,+54.459484,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -914: [+31.886446,+54.449825,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -915: [+31.119308,+54.801537,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -916: [+31.490938,+54.784985,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -917: [+31.767349,+54.769222,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -918: [+32.184532,+54.196976,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -919: [+32.491871,+54.178967,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -920: [+32.771656,+54.124821,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -921: [+32.218079,+54.516373,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -922: [+32.520073,+54.520206,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -923: [+32.826725,+54.496212,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -924: [+32.141068,+54.818062,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -925: [+32.459621,+54.787605,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -926: [+32.846973,+54.824600,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -927: [+33.139301,+54.167709,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -928: [+33.552181,+54.110859,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -929: [+33.828751,+54.113586,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -930: [+33.162834,+54.556965,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -931: [+33.468586,+54.468117,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -932: [+33.883072,+54.434826,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -933: [+33.171394,+54.882919,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -934: [+33.446423,+54.770611,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -935: [+33.829922,+54.864567,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -936: [+34.119251,+54.119244,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -937: [+34.446831,+54.192802,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -938: [+34.860279,+54.170151,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -939: [+34.186932,+54.525578,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -940: [+34.546638,+54.461563,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -941: [+34.862690,+54.506996,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -942: [+34.169643,+54.794220,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -943: [+34.464252,+54.832947,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -944: [+34.899994,+54.888836,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -945: [+35.171719,+54.120201,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -946: [+35.458164,+54.136829,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -947: [+35.834389,+54.195499,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -948: [+35.155464,+54.527649,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -949: [+35.554844,+54.545208,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -950: [+35.814445,+54.531567,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -951: [+35.221390,+54.791336,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -952: [+35.520138,+54.821518,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -953: [+35.816730,+54.879963,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -954: [+36.226353,+54.226608,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -955: [+36.535820,+54.196995,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+54.186924,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+54.502499,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+54.565315,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+54.489071,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+54.801395,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -961: [+36.462936,+54.787659,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -962: [+36.834877,+54.847473,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -963: [+37.191387,+54.110634,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -964: [+37.462688,+54.158367,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -965: [+37.818886,+54.170006,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -966: [+37.142696,+54.523399,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -967: [+37.561386,+54.442406,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -968: [+37.776711,+54.519779,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -969: [+37.179211,+54.774071,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -970: [+37.524548,+54.868561,+0.500000] , 1. 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[+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -976: [+26.506968,+55.458435,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -977: [+26.884155,+55.507492,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -978: [+26.132893,+55.885456,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -979: [+26.441977,+55.770092,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -980: [+26.780386,+55.802567,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -981: [+27.140551,+55.104282,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -982: [+27.502588,+55.113491,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -983: [+27.892059,+55.224407,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -984: [+27.210596,+55.438301,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -985: [+27.534935,+55.526138,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -986: [+27.859142,+55.451904,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -987: [+27.128996,+55.873898,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -988: [+27.560595,+55.862995,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -989: [+27.867004,+55.845978,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -990: [+28.162024,+55.209858,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -991: [+28.503239,+55.194374,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -992: [+28.851326,+55.207191,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -993: [+28.105694,+55.470947,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -994: [+28.499071,+55.439796,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -995: [+28.873707,+55.470013,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -996: [+28.121435,+55.863129,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -997: [+28.508137,+55.866837,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -998: [+28.854774,+55.819530,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -999: [+29.145632,+55.173359,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1000: [+29.546824,+55.145458,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1001: [+29.800119,+55.122345,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1002: [+29.194515,+55.511765,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1003: [+29.495457,+55.463112,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1004: [+29.807726,+55.453209,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1005: [+29.218763,+55.808571,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1006: [+29.455954,+55.847153,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1007: [+29.840296,+55.814240,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1008: [+30.191797,+55.111885,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1009: [+30.496613,+55.114353,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1010: [+30.767942,+55.152729,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1011: [+30.161652,+55.512165,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1012: [+30.471777,+55.503857,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1013: [+30.857004,+55.498714,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1014: [+30.215729,+55.872570,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1015: [+30.452332,+55.854534,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1016: [+30.858644,+55.792839,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1017: [+31.229849,+55.111542,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1018: [+31.451706,+55.200775,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1019: [+31.899271,+55.182709,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1020: [+31.155169,+55.534115,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1021: [+31.525824,+55.511532,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1022: [+31.773676,+55.476105,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1023: [+31.203428,+55.882973,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1024: [+31.444162,+55.867233,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1025: [+31.892878,+55.820869,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1026: [+32.153301,+55.189129,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1027: [+32.482731,+55.114006,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1028: [+32.829216,+55.162334,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1029: [+32.160320,+55.507458,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1030: [+32.453968,+55.461285,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1031: [+32.877758,+55.471241,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1032: [+32.210239,+55.802723,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1033: [+32.520920,+55.865044,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1034: [+32.823597,+55.867474,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1035: [+33.123859,+55.215721,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1036: [+33.492268,+55.216476,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1037: [+33.794796,+55.209549,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1038: [+33.100540,+55.463707,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1039: [+33.520931,+55.529041,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1040: [+33.855515,+55.466209,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1041: [+33.137817,+55.812546,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1042: [+33.475304,+55.773117,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1043: [+33.886486,+55.820534,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1044: [+34.164127,+55.216385,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1045: [+34.562622,+55.175903,+0.500000] , 1. 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[+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+58.865883,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+58.855579,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+58.884434,+0.500000] , 1. [+0.000000,-0.064000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-1.txt b/scenes/cell-growth/results/particles-frame-1.txt deleted file mode 100644 index 3e6fa063..00000000 --- a/scenes/cell-growth/results/particles-frame-1.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+46.026943,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+46.128189,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+46.100521,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+46.356815,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+46.445091,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+46.356571,+0.500000] , 1. 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[-0.000000,-0.192000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1371: [+34.207287,+58.441673,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1372: [+34.440655,+58.450882,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1373: [+34.880047,+58.359028,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1374: [+34.200047,+58.760204,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1375: [+34.479080,+58.744061,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1376: [+34.784893,+58.733349,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1377: [+35.163120,+58.114113,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1378: [+35.491985,+58.100521,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1379: [+35.817135,+58.059509,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1380: [+35.180683,+58.456268,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1381: [+35.544750,+58.396599,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1382: [+35.782356,+58.410622,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1383: [+35.175343,+58.754330,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1384: [+35.450748,+58.781250,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1385: [+35.802040,+58.739426,+0.500000] , 1. 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[+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1391: [+36.811745,+58.416195,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1392: [+36.152557,+58.727211,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1393: [+36.459557,+58.687702,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1394: [+36.861771,+58.744286,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1395: [+37.141144,+58.124165,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1396: [+37.544632,+58.093861,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1397: [+37.810879,+58.066612,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1398: [+37.144939,+58.347881,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1399: [+37.534695,+58.429184,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1400: [+37.884216,+58.353134,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+58.769882,+0.500000] , 1. [+0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+58.759579,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+58.788433,+0.500000] , 1. [-0.000000,-0.192000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-10.txt b/scenes/cell-growth/results/particles-frame-10.txt deleted file mode 100644 index 1473635e..00000000 --- a/scenes/cell-growth/results/particles-frame-10.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+40.042942,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+40.144188,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+40.116520,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+40.372814,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+40.461090,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+40.372570,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -6: [+26.138176,+40.720150,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -7: [+26.462387,+40.808464,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -8: [+26.819349,+40.773464,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -9: [+27.153780,+40.127769,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -10: [+27.494139,+40.096584,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -11: [+27.813742,+40.146770,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -12: [+27.153406,+40.361099,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -13: [+27.490547,+40.393623,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -14: [+27.873196,+40.397358,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -15: [+27.105312,+40.812420,+0.500000] , 1. 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[+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -811: [+32.521114,+47.151146,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -812: [+32.859058,+47.113289,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -813: [+32.133949,+47.426826,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -814: [+32.442291,+47.382195,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -815: [+32.892700,+47.356186,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -816: [+32.132492,+47.765041,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -817: [+32.467842,+47.754208,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -818: [+32.840862,+47.734802,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -819: [+33.201447,+47.093925,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -820: [+33.558567,+47.111290,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+47.137630,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+47.389771,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+47.484047,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+47.411674,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+47.782944,+0.500000] , 1. 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[-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+47.427536,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+47.472534,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+47.696526,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+47.779221,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+47.738335,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+47.044411,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+47.113926,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+47.103035,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+47.466965,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+47.469913,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+47.415791,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+47.772167,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+47.770496,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+47.796455,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+47.122753,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+47.082027,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+47.038723,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+47.374279,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+47.385239,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+47.417381,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+47.718266,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+47.717960,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+47.769409,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+48.046936,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+48.115627,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+48.037853,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+48.398476,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+48.422047,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+48.421352,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+48.733814,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+48.735279,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+48.791950,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+48.026085,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+48.055096,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+48.052586,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+48.436031,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+48.477104,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+48.387539,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+48.761845,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+48.693531,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+48.750523,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+48.072235,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+48.145050,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+48.124710,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+48.423340,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+48.465260,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+48.477001,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+48.724754,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+48.714428,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+48.691696,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+48.144409,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+48.047310,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+48.035248,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+48.393490,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+48.447567,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+48.427906,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+48.733063,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+48.818218,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+48.773010,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+48.041843,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+48.064266,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+48.094555,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+48.446583,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+48.393898,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+48.438004,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -906: [+30.149263,+48.767097,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -907: [+30.548489,+48.722027,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -908: [+30.806307,+48.713512,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -909: [+31.164091,+48.063873,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -910: [+31.566116,+48.054256,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -911: [+31.829193,+48.133331,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -912: [+31.196243,+48.470505,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -913: [+31.566414,+48.379482,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -914: [+31.886446,+48.369823,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -915: [+31.119308,+48.721535,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -916: [+31.490938,+48.704983,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -917: [+31.767349,+48.689220,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -918: [+32.184532,+48.116974,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -919: [+32.491871,+48.098965,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -920: [+32.771656,+48.044819,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -921: [+32.218079,+48.436371,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -922: [+32.520073,+48.440205,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -923: [+32.826725,+48.416210,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -924: [+32.141068,+48.738060,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -925: [+32.459621,+48.707603,+0.500000] , 1. 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[-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+48.106922,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+48.422497,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+48.485313,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+48.409069,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+48.721394,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -961: [+36.462936,+48.707657,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -962: [+36.834877,+48.767471,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -963: [+37.191387,+48.030632,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -964: [+37.462688,+48.078365,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -965: [+37.818886,+48.090004,+0.500000] , 1. 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[+0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -981: [+27.140551,+49.024281,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -982: [+27.502588,+49.033489,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -983: [+27.892059,+49.144405,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -984: [+27.210596,+49.358299,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -985: [+27.534935,+49.446136,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -986: [+27.859142,+49.371902,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -987: [+27.128996,+49.793896,+0.500000] , 1. [+0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -988: [+27.560595,+49.782993,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -989: [+27.867004,+49.765976,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -990: [+28.162024,+49.129856,+0.500000] , 1. 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[-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -996: [+28.121435,+49.783127,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -997: [+28.508137,+49.786835,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -998: [+28.854774,+49.739529,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -999: [+29.145632,+49.093357,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1000: [+29.546824,+49.065456,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1001: [+29.800119,+49.042343,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1002: [+29.194515,+49.431763,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1003: [+29.495457,+49.383110,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1004: [+29.807726,+49.373207,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1005: [+29.218763,+49.728569,+0.500000] , 1. 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[-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+52.785881,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+52.775578,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+52.804432,+0.500000] , 1. [-0.000000,-1.280000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-2.txt b/scenes/cell-growth/results/particles-frame-2.txt deleted file mode 100644 index 7aeaef96..00000000 --- a/scenes/cell-growth/results/particles-frame-2.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+45.802944,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+45.904190,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+45.876522,+0.500000] , 1. [+0.000000,-0.320000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+46.132816,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+46.221092,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+46.132572,+0.500000] , 1. 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[-0.000000,-0.320000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+58.545883,+0.500000] , 1. [+0.000000,-0.320000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+58.535580,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+58.564434,+0.500000] , 1. [-0.000000,-0.320000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-3.txt b/scenes/cell-growth/results/particles-frame-3.txt deleted file mode 100644 index 2c1c0bc1..00000000 --- a/scenes/cell-growth/results/particles-frame-3.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+45.450943,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+45.552189,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+45.524521,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+45.780815,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+45.869091,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+45.780571,+0.500000] , 1. 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[-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+52.545631,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+52.797771,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+52.892048,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+52.819675,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+53.190945,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -826: [+33.506756,+53.107353,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -827: [+33.801613,+53.213116,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -828: [+34.110409,+52.481064,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -829: [+34.439758,+52.550468,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -830: [+34.875191,+52.496269,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -831: [+34.206432,+52.882362,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -832: [+34.512966,+52.813576,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -833: [+34.885456,+52.860558,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -834: [+34.219738,+53.134895,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -835: [+34.435211,+53.218410,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+53.176853,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+52.514767,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+52.541519,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+52.468559,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+52.783798,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+52.835537,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+52.880535,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+53.104527,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+53.187222,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+53.146336,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+52.452412,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+52.521927,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+52.511036,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+52.874966,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+52.877914,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+52.823792,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+53.180168,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+53.178497,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+53.204456,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+52.530754,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+52.490028,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+52.446724,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+52.782280,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+52.793240,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+52.825382,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+53.126266,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+53.125961,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+53.177410,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+53.454937,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+53.523628,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+53.445854,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+53.806477,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+53.830048,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+53.829353,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+54.141815,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+54.143280,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+54.199951,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+53.434086,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+53.463097,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+53.460587,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+53.844032,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+53.885105,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+53.795540,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+54.169846,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+54.101532,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+54.158524,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+53.480236,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+53.553051,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+53.532711,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+53.831341,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+53.873260,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+53.885002,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+54.132755,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+54.122429,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+54.099697,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+53.552410,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+53.455311,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+53.443249,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+53.801491,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+53.855568,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+53.835907,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+54.141064,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+54.226219,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+54.181011,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+53.449844,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+53.472267,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+53.502556,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+53.854584,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+53.801899,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+53.846004,+0.500000] , 1. 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[-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+53.514923,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+53.830498,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+53.893314,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+53.817070,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+54.129395,+0.500000] , 1. 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[+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -971: [+37.833260,+54.199188,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -972: [+26.181145,+54.518951,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -973: [+26.485340,+54.519592,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -974: [+26.885241,+54.456364,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -975: [+26.138872,+54.814842,+0.500000] , 1. 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[-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1386: [+36.128307,+57.440739,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1387: [+36.551025,+57.521851,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1388: [+36.895729,+57.533440,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1389: [+36.115437,+57.782917,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1390: [+36.439560,+57.806938,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1391: [+36.811745,+57.840195,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1392: [+36.152557,+58.151211,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1393: [+36.459557,+58.111702,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1394: [+36.861771,+58.168285,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1395: [+37.141144,+57.548164,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1396: [+37.544632,+57.517860,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1397: [+37.810879,+57.490612,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1398: [+37.144939,+57.771881,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1399: [+37.534695,+57.853184,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1400: [+37.884216,+57.777134,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+58.193882,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+58.183578,+0.500000] , 1. [+0.000000,-0.448000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+58.212433,+0.500000] , 1. [-0.000000,-0.448000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-4.txt b/scenes/cell-growth/results/particles-frame-4.txt deleted file mode 100644 index 7178f2d4..00000000 --- a/scenes/cell-growth/results/particles-frame-4.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+44.970943,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+45.072189,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+45.044521,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+45.300816,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+45.389091,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+45.300571,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -6: [+26.138176,+45.648151,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -7: [+26.462387,+45.736465,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -8: [+26.819349,+45.701466,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -9: [+27.153780,+45.055771,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -10: [+27.494139,+45.024586,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -11: [+27.813742,+45.074772,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -12: [+27.153406,+45.289101,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -13: [+27.490547,+45.321625,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -14: [+27.873196,+45.325359,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -15: [+27.105312,+45.740421,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -16: [+27.469255,+45.640228,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -17: [+27.878544,+45.705471,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -18: [+28.123091,+45.054802,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -19: [+28.439552,+45.017517,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -20: [+28.845465,+45.054985,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -21: [+28.226366,+45.298969,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -22: [+28.520102,+45.348598,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -23: [+28.832155,+45.290928,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -24: [+28.162525,+45.643616,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -25: [+28.546179,+45.706963,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -26: [+28.770546,+45.682446,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -27: [+29.172895,+45.045284,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -28: [+29.528704,+45.050262,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -29: [+29.772995,+44.998383,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -30: [+29.205616,+45.341103,+0.500000] , 1. 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[+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+52.696854,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+52.034767,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+52.061520,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+51.988560,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+52.303799,+0.500000] , 1. 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[-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+52.343792,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+52.700169,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+52.698498,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+52.724457,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+52.050755,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+52.010029,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+51.966724,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+52.302280,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+52.313240,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+52.345383,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+52.646267,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+52.645962,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+52.697411,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+52.974937,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+53.043629,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+52.965855,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+53.326477,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+53.350048,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+53.349354,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+53.661816,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+53.663280,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+53.719952,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+52.954086,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+52.983097,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+52.980587,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+53.364033,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+53.405106,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+53.315540,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+53.689846,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+53.621532,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+53.678524,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+53.000237,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+53.073051,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+53.052711,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+53.351341,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+53.393261,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+53.405003,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+53.652756,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+53.642429,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+53.619698,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+53.072411,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+52.975311,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+52.963249,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+53.321491,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+53.375568,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+53.355907,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+53.661064,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+53.746220,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+53.701012,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+52.969845,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+52.992268,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+53.022556,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+53.374584,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+53.321899,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+53.366005,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -906: [+30.149263,+53.695099,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -907: [+30.548489,+53.650028,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -908: [+30.806307,+53.641514,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -909: [+31.164091,+52.991875,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -910: [+31.566116,+52.982258,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -911: [+31.829193,+53.061333,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -912: [+31.196243,+53.398506,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -913: [+31.566414,+53.307484,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -914: [+31.886446,+53.297825,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -915: [+31.119308,+53.649536,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -916: [+31.490938,+53.632984,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -917: [+31.767349,+53.617222,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -918: [+32.184532,+53.044975,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -919: [+32.491871,+53.026966,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -920: [+32.771656,+52.972820,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -921: [+32.218079,+53.364372,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -922: [+32.520073,+53.368206,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -923: [+32.826725,+53.344212,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -924: [+32.141068,+53.666061,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -925: [+32.459621,+53.635605,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -926: [+32.846973,+53.672600,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -927: [+33.139301,+53.015709,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -928: [+33.552181,+52.958858,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -929: [+33.828751,+52.961586,+0.500000] , 1. [+0.000000,-0.576000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -930: [+33.162834,+53.404964,+0.500000] , 1. 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[-0.000000,-0.576000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+57.713882,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+57.703579,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+57.732433,+0.500000] , 1. [-0.000000,-0.576000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-5.txt b/scenes/cell-growth/results/particles-frame-5.txt deleted file mode 100644 index 9667afd2..00000000 --- a/scenes/cell-growth/results/particles-frame-5.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+44.362946,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+44.464191,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+44.436523,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+44.692818,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+44.781094,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+44.692574,+0.500000] , 1. 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[-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+51.457634,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+51.709774,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+51.804050,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+51.731678,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+52.102947,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -826: [+33.506756,+52.019356,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -827: [+33.801613,+52.125118,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -828: [+34.110409,+51.393066,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -829: [+34.439758,+51.462471,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -830: [+34.875191,+51.408272,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -831: [+34.206432,+51.794365,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -832: [+34.512966,+51.725578,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -833: [+34.885456,+51.772560,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -834: [+34.219738,+52.046898,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -835: [+34.435211,+52.130413,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+52.088856,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+51.426769,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+51.453522,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+51.380562,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+51.695801,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+51.747540,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+51.792538,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+52.016529,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+52.099224,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+52.058338,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+51.364414,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+51.433929,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+51.423038,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+51.786968,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+51.789917,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+51.735794,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+52.092171,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+52.090500,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+52.116459,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+51.442757,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+51.402031,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+51.358727,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+51.694283,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+51.705242,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+51.737385,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+52.038269,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+52.037964,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+52.089413,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+52.366940,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+52.435631,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+52.357857,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+52.718479,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+52.742050,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+52.741356,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+53.053818,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+53.055283,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+53.111954,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+52.346088,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+52.375099,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+52.372589,+0.500000] , 1. 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[-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -946: [+35.458164,+52.376831,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -947: [+35.834389,+52.435501,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -948: [+35.155464,+52.767651,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -949: [+35.554844,+52.785210,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -950: [+35.814445,+52.771568,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -951: [+35.221390,+53.031338,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -952: [+35.520138,+53.061520,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -953: [+35.816730,+53.119965,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -954: [+36.226353,+52.466610,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -955: [+36.535820,+52.436996,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+52.426926,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+52.742500,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+52.805317,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+52.729073,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+53.041397,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -961: [+36.462936,+53.027660,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -962: [+36.834877,+53.087475,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -963: [+37.191387,+52.350636,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -964: [+37.462688,+52.398369,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -965: [+37.818886,+52.410007,+0.500000] , 1. 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[-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1371: [+34.207287,+56.777676,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1372: [+34.440655,+56.786884,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1373: [+34.880047,+56.695030,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1374: [+34.200047,+57.096207,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1375: [+34.479080,+57.080063,+0.500000] , 1. 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[-0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1386: [+36.128307,+56.352741,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1387: [+36.551025,+56.433853,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1388: [+36.895729,+56.445442,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1389: [+36.115437,+56.694920,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1390: [+36.439560,+56.718941,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1391: [+36.811745,+56.752197,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1392: [+36.152557,+57.063213,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1393: [+36.459557,+57.023705,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1394: [+36.861771,+57.080288,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1395: [+37.141144,+56.460167,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1396: [+37.544632,+56.429863,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1397: [+37.810879,+56.402615,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1398: [+37.144939,+56.683884,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1399: [+37.534695,+56.765186,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1400: [+37.884216,+56.689137,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+57.105885,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+57.095581,+0.500000] , 1. [+0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+57.124435,+0.500000] , 1. [-0.000000,-0.704000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-6.txt b/scenes/cell-growth/results/particles-frame-6.txt deleted file mode 100644 index eb50bff2..00000000 --- a/scenes/cell-growth/results/particles-frame-6.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+43.626945,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+43.728191,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+43.700523,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+43.956818,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+44.045094,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+43.956573,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -6: [+26.138176,+44.304153,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -7: [+26.462387,+44.392467,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -8: [+26.819349,+44.357468,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -9: [+27.153780,+43.711773,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -10: [+27.494139,+43.680588,+0.500000] , 1. 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[-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+50.999794,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+51.356171,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+51.354500,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+51.380459,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+50.706757,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+50.666031,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+50.622726,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+50.958282,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+50.969242,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+51.001385,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+51.302269,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+51.301964,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+51.353413,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+51.630939,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+51.699631,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+51.621857,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+51.982479,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+52.006050,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+52.005356,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+52.317818,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+52.319283,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+52.375954,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+51.610088,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+51.639099,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+51.636589,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+52.020035,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+52.061108,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+51.971542,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+52.345848,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+52.277534,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+52.334526,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+51.656239,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+51.729053,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+51.708714,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+52.007343,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+52.049263,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+52.061005,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+52.308758,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+52.298431,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+52.275700,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+51.728413,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+51.631313,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+51.619251,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+51.977493,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+52.031570,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+52.011909,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+52.317066,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+52.402222,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+52.357014,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+51.625847,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+51.648270,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+51.678558,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+52.030586,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+51.977901,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+52.022007,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -906: [+30.149263,+52.351101,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -907: [+30.548489,+52.306030,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -908: [+30.806307,+52.297516,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -909: [+31.164091,+51.647877,+0.500000] , 1. [+0.000000,-0.832000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -910: [+31.566116,+51.638260,+0.500000] , 1. 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[-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+56.369884,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+56.359581,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+56.388435,+0.500000] , 1. [-0.000000,-0.832000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-7.txt b/scenes/cell-growth/results/particles-frame-7.txt deleted file mode 100644 index 9d2bf78c..00000000 --- a/scenes/cell-growth/results/particles-frame-7.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+42.762943,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+42.864189,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+42.836521,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+43.092815,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+43.181091,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+43.092571,+0.500000] , 1. 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[-0.000000,-0.960000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+49.764412,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+49.833927,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+49.823036,+0.500000] , 1. [+0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+50.186966,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+50.189915,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+50.135792,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+50.492168,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+50.490498,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+50.516457,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+49.842754,+0.500000] , 1. 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[-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1396: [+37.544632,+54.829861,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1397: [+37.810879,+54.802612,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1398: [+37.144939,+55.083881,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1399: [+37.534695,+55.165184,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1400: [+37.884216,+55.089134,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+55.505882,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+55.495579,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+55.524433,+0.500000] , 1. [-0.000000,-0.960000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-8.txt b/scenes/cell-growth/results/particles-frame-8.txt deleted file mode 100644 index af466a23..00000000 --- a/scenes/cell-growth/results/particles-frame-8.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+41.770943,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+41.872189,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+41.844521,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+42.100815,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+42.189091,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+42.100571,+0.500000] , 1. 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[+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -16: [+27.469255,+42.440228,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -17: [+27.878544,+42.505470,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -18: [+28.123091,+41.854801,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -19: [+28.439552,+41.817516,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -20: [+28.845465,+41.854984,+0.500000] , 1. 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[+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -806: [+31.848373,+49.151413,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -807: [+31.141485,+49.437847,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -808: [+31.527235,+49.520004,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -809: [+31.894653,+49.427456,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -810: [+32.126587,+48.785690,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -811: [+32.521114,+48.879147,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -812: [+32.859058,+48.841290,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -813: [+32.133949,+49.154827,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -814: [+32.442291,+49.110195,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -815: [+32.892700,+49.084187,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -816: [+32.132492,+49.493042,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -817: [+32.467842,+49.482208,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -818: [+32.840862,+49.462803,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -819: [+33.201447,+48.821926,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -820: [+33.558567,+48.839291,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+48.865631,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+49.117771,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+49.212048,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+49.139675,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+49.510944,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -826: [+33.506756,+49.427353,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -827: [+33.801613,+49.533115,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -828: [+34.110409,+48.801064,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -829: [+34.439758,+48.870468,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -830: [+34.875191,+48.816269,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -831: [+34.206432,+49.202362,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -832: [+34.512966,+49.133575,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -833: [+34.885456,+49.180557,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -834: [+34.219738,+49.454895,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -835: [+34.435211,+49.538410,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+49.496853,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+48.834766,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+48.861519,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+48.788559,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+49.103798,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+49.155537,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+49.200535,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+49.424526,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+49.507221,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+49.466335,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+48.772411,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+48.841927,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+48.831036,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+49.194965,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+49.197914,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+49.143791,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+49.500168,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+49.498497,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+49.524456,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+48.850754,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+48.810028,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+48.766724,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+49.102280,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+49.113239,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+49.145382,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+49.446266,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+49.445961,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+49.497410,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+49.774937,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+49.843628,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+49.765854,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+50.126476,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+50.150047,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+50.149353,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+50.461815,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+50.463280,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+50.519951,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+49.754086,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+49.783096,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+49.780586,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+50.164032,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+50.205105,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+50.115540,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+50.489845,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+50.421532,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+50.478523,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+49.800236,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+49.873051,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+49.852711,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+50.151340,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+50.193260,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+50.205002,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+50.452755,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+50.442429,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+50.419697,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+49.872410,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+49.775311,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+49.763248,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+50.121490,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+50.175568,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+50.155907,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+50.461063,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+50.546219,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+50.501011,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+49.769844,+0.500000] , 1. 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[-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -921: [+32.218079,+50.164371,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -922: [+32.520073,+50.168205,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -923: [+32.826725,+50.144211,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -924: [+32.141068,+50.466061,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -925: [+32.459621,+50.435604,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -926: [+32.846973,+50.472599,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -927: [+33.139301,+49.815708,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -928: [+33.552181,+49.758858,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -929: [+33.828751,+49.761585,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -930: [+33.162834,+50.204964,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -931: [+33.468586,+50.116116,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -932: [+33.883072,+50.082825,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -933: [+33.171394,+50.530918,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -934: [+33.446423,+50.418610,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -935: [+33.829922,+50.512566,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -936: [+34.119251,+49.767242,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -937: [+34.446831,+49.840801,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -938: [+34.860279,+49.818150,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -939: [+34.186932,+50.173576,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -940: [+34.546638,+50.109562,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -941: [+34.862690,+50.154995,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -942: [+34.169643,+50.442219,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -943: [+34.464252,+50.480946,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -944: [+34.899994,+50.536835,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -945: [+35.171719,+49.768200,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -946: [+35.458164,+49.784828,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -947: [+35.834389,+49.843498,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -948: [+35.155464,+50.175648,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -949: [+35.554844,+50.193207,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -950: [+35.814445,+50.179565,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -951: [+35.221390,+50.439335,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -952: [+35.520138,+50.469517,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -953: [+35.816730,+50.527962,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -954: [+36.226353,+49.874607,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -955: [+36.535820,+49.844994,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+49.834923,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+50.150497,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+50.213314,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+50.137070,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+50.449394,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -961: [+36.462936,+50.435658,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -962: [+36.834877,+50.495472,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -963: [+37.191387,+49.758633,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -964: [+37.462688,+49.806366,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -965: [+37.818886,+49.818005,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -966: [+37.142696,+50.171398,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -967: [+37.561386,+50.090405,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -968: [+37.776711,+50.167778,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -969: [+37.179211,+50.422070,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -970: [+37.524548,+50.516560,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -971: [+37.833260,+50.519188,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -972: [+26.181145,+50.838951,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -973: [+26.485340,+50.839592,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -974: [+26.885241,+50.776363,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -975: [+26.138872,+51.134842,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -976: [+26.506968,+51.106434,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -977: [+26.884155,+51.155491,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -978: [+26.132893,+51.533459,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -979: [+26.441977,+51.418091,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -980: [+26.780386,+51.450565,+0.500000] , 1. 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[+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1041: [+33.137817,+51.460545,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1042: [+33.475304,+51.421116,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1043: [+33.886486,+51.468533,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1044: [+34.164127,+50.864384,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1045: [+34.562622,+50.823902,+0.500000] , 1. 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[-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1056: [+35.135944,+51.174210,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1057: [+35.557716,+51.213314,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1058: [+35.883801,+51.115635,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1059: [+35.196846,+51.519836,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1060: [+35.446491,+51.486736,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1061: [+35.878273,+51.473560,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1062: [+36.208195,+50.881237,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1063: [+36.447163,+50.844353,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1064: [+36.804268,+50.798901,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1065: [+36.182274,+51.206886,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1066: [+36.511421,+51.200405,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1067: [+36.859463,+51.203888,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1068: [+36.166683,+51.461552,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1069: [+36.508068,+51.415592,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1070: [+36.813854,+51.494709,+0.500000] , 1. 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[-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1366: [+33.555695,+54.480080,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1367: [+33.886368,+54.467602,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1368: [+34.167728,+53.828281,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1369: [+34.507839,+53.766991,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1370: [+34.799141,+53.808071,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1371: [+34.207287,+54.185673,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1372: [+34.440655,+54.194881,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1373: [+34.880047,+54.103031,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1374: [+34.200047,+54.504204,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1375: [+34.479080,+54.488060,+0.500000] , 1. 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[+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1381: [+35.544750,+54.140598,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1382: [+35.782356,+54.154621,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1383: [+35.175343,+54.498329,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1384: [+35.450748,+54.525249,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1385: [+35.802040,+54.483425,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1386: [+36.128307,+53.760738,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1387: [+36.551025,+53.841850,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1388: [+36.895729,+53.853439,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1389: [+36.115437,+54.102917,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1390: [+36.439560,+54.126938,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1391: [+36.811745,+54.160194,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1392: [+36.152557,+54.471210,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1393: [+36.459557,+54.431702,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1394: [+36.861771,+54.488285,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1395: [+37.141144,+53.868164,+0.500000] , 1. [+0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1396: [+37.544632,+53.837860,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1397: [+37.810879,+53.810612,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1398: [+37.144939,+54.091881,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1399: [+37.534695,+54.173183,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1400: [+37.884216,+54.097134,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1401: [+37.140438,+54.513882,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1402: [+37.530254,+54.503578,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1403: [+37.851040,+54.532433,+0.500000] , 1. [-0.000000,-1.088000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/results/particles-frame-9.txt b/scenes/cell-growth/results/particles-frame-9.txt deleted file mode 100644 index 388037da..00000000 --- a/scenes/cell-growth/results/particles-frame-9.txt +++ /dev/null @@ -1,1405 +0,0 @@ -1404, pdata: 4 (0,0,4) -0: [+26.122849,+40.650944,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1: [+26.453651,+40.752190,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -2: [+26.898863,+40.724522,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -3: [+26.112722,+40.980816,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -4: [+26.557117,+41.069092,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -5: [+26.849995,+40.980572,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -6: [+26.138176,+41.328152,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -7: [+26.462387,+41.416466,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -8: [+26.819349,+41.381466,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -9: [+27.153780,+40.735771,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -10: [+27.494139,+40.704586,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -11: [+27.813742,+40.754772,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -12: [+27.153406,+40.969101,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -13: [+27.490547,+41.001625,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -14: [+27.873196,+41.005360,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -15: [+27.105312,+41.420422,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -16: [+27.469255,+41.320229,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -17: [+27.878544,+41.385471,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -18: [+28.123091,+40.734802,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -19: [+28.439552,+40.697517,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -20: [+28.845465,+40.734985,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -21: [+28.226366,+40.978970,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -22: [+28.520102,+41.028599,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -23: [+28.832155,+40.970928,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -24: [+28.162525,+41.323616,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -25: [+28.546179,+41.386963,+0.500000] , 1. 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[-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -786: [+29.194283,+48.028061,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -787: [+29.552193,+48.046360,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -788: [+29.796343,+47.996651,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -789: [+29.205294,+48.303486,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -790: [+29.492943,+48.397102,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -791: [+29.779907,+48.301414,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -792: [+30.160954,+47.639042,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -793: [+30.481503,+47.710709,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -794: [+30.850628,+47.695740,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -795: [+30.106712,+48.073967,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -796: [+30.544125,+47.973335,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -797: [+30.853552,+48.034187,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -798: [+30.207396,+48.389545,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -799: [+30.546389,+48.343121,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -800: [+30.827963,+48.424728,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -801: [+31.101477,+47.654697,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -802: [+31.503988,+47.730583,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -803: [+31.771484,+47.723152,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -804: [+31.135811,+48.016685,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -805: [+31.470810,+47.983562,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -806: [+31.848373,+48.031414,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -807: [+31.141485,+48.317848,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -808: [+31.527235,+48.400005,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -809: [+31.894653,+48.307457,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -810: [+32.126587,+47.665691,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -811: [+32.521114,+47.759148,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -812: [+32.859058,+47.721291,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -813: [+32.133949,+48.034828,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -814: [+32.442291,+47.990196,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -815: [+32.892700,+47.964188,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -816: [+32.132492,+48.373043,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -817: [+32.467842,+48.362209,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -818: [+32.840862,+48.342804,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -819: [+33.201447,+47.701927,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -820: [+33.558567,+47.719292,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -821: [+33.804775,+47.745632,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -822: [+33.170921,+47.997772,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -823: [+33.543110,+48.092049,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -824: [+33.833275,+48.019676,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -825: [+33.148209,+48.390945,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -826: [+33.506756,+48.307354,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -827: [+33.801613,+48.413116,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -828: [+34.110409,+47.681065,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -829: [+34.439758,+47.750469,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -830: [+34.875191,+47.696270,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -831: [+34.206432,+48.082363,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -832: [+34.512966,+48.013577,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -833: [+34.885456,+48.060558,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -834: [+34.219738,+48.334896,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -835: [+34.435211,+48.418411,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -836: [+34.812500,+48.376854,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -837: [+35.224815,+47.714767,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -838: [+35.495049,+47.741520,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -839: [+35.896206,+47.668560,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -840: [+35.108387,+47.983799,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -841: [+35.457355,+48.035538,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -842: [+35.881550,+48.080536,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -843: [+35.206078,+48.304527,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -844: [+35.487328,+48.387222,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -845: [+35.890820,+48.346336,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -846: [+36.195946,+47.652412,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -847: [+36.475105,+47.721928,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -848: [+36.828655,+47.711037,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -849: [+36.164520,+48.074966,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -850: [+36.518147,+48.077915,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -851: [+36.776234,+48.023792,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -852: [+36.156277,+48.380169,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -853: [+36.479759,+48.378498,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -854: [+36.840729,+48.404457,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -855: [+37.196606,+47.730755,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -856: [+37.562302,+47.690029,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -857: [+37.870094,+47.646725,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -858: [+37.229519,+47.982281,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -859: [+37.526077,+47.993240,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -860: [+37.855621,+48.025383,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -861: [+37.137138,+48.326267,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -862: [+37.502850,+48.325962,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -863: [+37.832649,+48.377411,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -864: [+26.231997,+48.654938,+0.500000] , 1. [+0.000000,-1.216001,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -865: [+26.542580,+48.723629,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -866: [+26.770626,+48.645855,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -867: [+26.155806,+49.006477,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -868: [+26.529467,+49.030048,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -869: [+26.869736,+49.029354,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -870: [+26.189566,+49.341816,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -871: [+26.510792,+49.343281,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -872: [+26.830320,+49.399952,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -873: [+27.134605,+48.634087,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -874: [+27.443459,+48.663097,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -875: [+27.857122,+48.660587,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -876: [+27.124495,+49.044033,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -877: [+27.471586,+49.085106,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -878: [+27.856516,+48.995541,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -879: [+27.183117,+49.369846,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -880: [+27.474194,+49.301533,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -881: [+27.854292,+49.358524,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -882: [+28.220310,+48.680237,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -883: [+28.461962,+48.753052,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -884: [+28.775028,+48.732712,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -885: [+28.214243,+49.031342,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -886: [+28.509596,+49.073261,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -887: [+28.882565,+49.085003,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -888: [+28.156755,+49.332756,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -889: [+28.457436,+49.322430,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -890: [+28.819435,+49.299698,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -891: [+29.214371,+48.752411,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -892: [+29.446362,+48.655312,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -893: [+29.823751,+48.643250,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -894: [+29.152260,+49.001492,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -895: [+29.516272,+49.055569,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -896: [+29.823322,+49.035908,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -897: [+29.143723,+49.341064,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -898: [+29.539940,+49.426220,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -899: [+29.869474,+49.381012,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -900: [+30.197229,+48.649845,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -901: [+30.497908,+48.672268,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -902: [+30.798164,+48.702557,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -903: [+30.172680,+49.054585,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -904: [+30.519325,+49.001900,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -905: [+30.825335,+49.046005,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -906: [+30.149263,+49.375099,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -907: [+30.548489,+49.330029,+0.500000] , 1. [-0.000000,-1.216001,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -908: [+30.806307,+49.321514,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -909: [+31.164091,+48.671875,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -910: [+31.566116,+48.662258,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -911: [+31.829193,+48.741333,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -912: [+31.196243,+49.078506,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -913: [+31.566414,+48.987484,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -914: [+31.886446,+48.977825,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -915: [+31.119308,+49.329536,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -916: [+31.490938,+49.312984,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -917: [+31.767349,+49.297222,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -918: [+32.184532,+48.724976,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -919: [+32.491871,+48.706966,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -920: [+32.771656,+48.652821,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -921: [+32.218079,+49.044373,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -922: [+32.520073,+49.048206,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -923: [+32.826725,+49.024212,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -924: [+32.141068,+49.346062,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -925: [+32.459621,+49.315605,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -926: [+32.846973,+49.352600,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -927: [+33.139301,+48.695709,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -928: [+33.552181,+48.638859,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -929: [+33.828751,+48.641586,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -930: [+33.162834,+49.084965,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -931: [+33.468586,+48.996117,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -932: [+33.883072,+48.962826,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -933: [+33.171394,+49.410919,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -934: [+33.446423,+49.298611,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -935: [+33.829922,+49.392567,+0.500000] , 1. 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[-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -946: [+35.458164,+48.664829,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -947: [+35.834389,+48.723499,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -948: [+35.155464,+49.055649,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -949: [+35.554844,+49.073208,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -950: [+35.814445,+49.059566,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -951: [+35.221390,+49.319336,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -952: [+35.520138,+49.349518,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -953: [+35.816730,+49.407963,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -954: [+36.226353,+48.754608,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -955: [+36.535820,+48.724995,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -956: [+36.861179,+48.714924,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -957: [+36.172020,+49.030499,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -958: [+36.507149,+49.093315,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -959: [+36.879562,+49.017071,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -960: [+36.137104,+49.329395,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -961: [+36.462936,+49.315659,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -962: [+36.834877,+49.375473,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -963: [+37.191387,+48.638634,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -964: [+37.462688,+48.686367,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -965: [+37.818886,+48.698006,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -966: [+37.142696,+49.051399,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -967: [+37.561386,+48.970406,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -968: [+37.776711,+49.047779,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -969: [+37.179211,+49.302071,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -970: [+37.524548,+49.396561,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -971: [+37.833260,+49.399189,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -972: [+26.181145,+49.718952,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -973: [+26.485340,+49.719593,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -974: [+26.885241,+49.656364,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -975: [+26.138872,+50.014843,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -976: [+26.506968,+49.986435,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -977: [+26.884155,+50.035492,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -978: [+26.132893,+50.413460,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -979: [+26.441977,+50.298092,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -980: [+26.780386,+50.330566,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -981: [+27.140551,+49.632282,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -982: [+27.502588,+49.641491,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -983: [+27.892059,+49.752407,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -984: [+27.210596,+49.966301,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -985: [+27.534935,+50.054138,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -986: [+27.859142,+49.979904,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -987: [+27.128996,+50.401897,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -988: [+27.560595,+50.390995,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -989: [+27.867004,+50.373978,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -990: [+28.162024,+49.737858,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -991: [+28.503239,+49.722374,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -992: [+28.851326,+49.735191,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -993: [+28.105694,+49.998947,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -994: [+28.499071,+49.967796,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -995: [+28.873707,+49.998013,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -996: [+28.121435,+50.391129,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -997: [+28.508137,+50.394836,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -998: [+28.854774,+50.347530,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -999: [+29.145632,+49.701359,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1000: [+29.546824,+49.673458,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1001: [+29.800119,+49.650345,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1002: [+29.194515,+50.039764,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1003: [+29.495457,+49.991112,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1004: [+29.807726,+49.981209,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1005: [+29.218763,+50.336571,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1006: [+29.455954,+50.375153,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1007: [+29.840296,+50.342239,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1008: [+30.191797,+49.639885,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1009: [+30.496613,+49.642353,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1010: [+30.767942,+49.680729,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1011: [+30.161652,+50.040165,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1012: [+30.471777,+50.031857,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1013: [+30.857004,+50.026714,+0.500000] , 1. [-0.000000,-1.216000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1014: [+30.215729,+50.400570,+0.500000] , 1. [+0.000000,-1.216000,+0.000000] [+0.000000,+0.000000,+0.000000] [-0.000000,-0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] -1015: [+30.452332,+50.382534,+0.500000] , 1. 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[-0.000000,-1.216000,+0.000000] [-0.000000,-0.000000,+0.000000] [-0.000000,+0.000000,+0.000000] [+0.000000,+0.000000,+0.000000] diff --git a/scenes/cell-growth/view-particles.ipynb b/scenes/cell-growth/view-particles.ipynb deleted file mode 100644 index 05ea3695..00000000 --- a/scenes/cell-growth/view-particles.ipynb +++ /dev/null @@ -1,111 +0,0 @@ -{ - "cells": [ - { - "cell_type": "code", - "execution_count": 13, - "metadata": {}, - "outputs": [], - "source": [ - "import numpy as np\n", - "import k3d\n", - "import pandas as pd" - ] - }, - { - "cell_type": "code", - "execution_count": 27, - "metadata": { - "tags": [] - }, - "outputs": [ - { - "output_type": "execute_result", - "data": { - "text/plain": " position\n \n0 [+26.122849,+46.122944,+0.500000] , 1. [+0.00...\n1 [+26.453651,+46.224190,+0.500000] , 1. [+0.00...\n2 [+26.898863,+46.196522,+0.500000] , 1. [+0.00...\n3 [+26.112722,+46.452816,+0.500000] , 1. [+0.00...\n4 [+26.557117,+46.541092,+0.500000] , 1. 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" - }, - "metadata": {}, - "execution_count": 27 - } - ], - "source": [ - "df = pd.read_table('./results/particles-frame-0.txt', skiprows=1, usecols=[0,1], names=['','position'], sep=':', index_col=0)\n", - "df" - ] - }, - { - "cell_type": "code", - "execution_count": 28, - "metadata": {}, - "outputs": [ - { - "output_type": "display_data", - "data": { - "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "bbed7b1ed2124cf29489bae49f656fde" - } - }, - "metadata": {} - }, - { - "output_type": "display_data", - "data": { - "text/plain": "Output()", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "984bfc3ac728407e8362a7ae19e20f18" - } - }, - "metadata": {} - } - ], - "source": [ - "Nx, Ny = 34, 33\n", - "xmin, xmax = -3, 4\n", - "ymin, ymax = -0, 3\n", - "\n", - "x = np.linspace(xmin, xmax, Nx)\n", - "y = np.linspace(ymin, ymax, Ny)\n", - "x, y = np.meshgrid(x, y)\n", - "f = np.sin(x**2 + y**2)\n", - "\n", - "plot = k3d.plot()\n", - "plt_surface = k3d.surface(f.astype(np.float32), bounds=[xmin,xmax,ymin,ymax])\n", - "plot += plt_surface\n", - "plot.display()" - ] - }, - { - "cell_type": "code", - "execution_count": null, - "metadata": {}, - "outputs": [], - "source": [] - } - ], - "metadata": { - "language_info": { - "codemirror_mode": { - "name": "ipython", - "version": 3 - }, - "file_extension": ".py", - "mimetype": "text/x-python", - "name": "python", - "nbconvert_exporter": "python", - "pygments_lexer": "ipython3", - "version": "3.7.6-final" - }, - "orig_nbformat": 2, - "kernelspec": { - "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd", - "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)" - } - }, - "nbformat": 4, - "nbformat_minor": 2 -} \ No newline at end of file diff --git a/scenes/view_particles_in_notebook.ipynb b/scenes/view_particles_in_notebook.ipynb new file mode 100644 index 00000000..b4d62ecc --- /dev/null +++ b/scenes/view_particles_in_notebook.ipynb @@ -0,0 +1,132 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import k3d\n", + "import numpy as np" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": {}, + "outputs": [ + { + "output_type": "display_data", + "data": { + "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "dc015d82dedc4ed1a40a64c9ac473461" + } + }, + "metadata": {} + }, + { + "output_type": "display_data", + "data": { + "text/plain": "Output()", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "4f43755aff934a1981a52faf60c0ef39" + } + }, + "metadata": {} + } + ], + "source": [ + "# View 50 frames at a time\n", + "\n", + "start = 50\n", + "stop = 100\n", + "\n", + "if start > 0:\n", + " offset = start\n", + " start = 0\n", + " stop = stop - offset\n", + "else:\n", + " offset = 0\n", + "\n", + "positions = {\n", + " str(t):np.loadtxt('frames/particles-frame-%d.nptxt' % (t+offset)).astype(np.float32) for t in range(start, stop, 1)\n", + "}\n", + "plot = k3d.plot(name='points', time=float(start))\n", + "plt_points = k3d.points(positions=positions, point_size=0.4, shader='3dSpecular', color=0xD0D3D4, opacity=0.5)\n", + "plot += plt_points\n", + "plot.display()" + ] + }, + { + "cell_type": "code", + "execution_count": 7, + "metadata": {}, + "outputs": [ + { + "output_type": "display_data", + "data": { + "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "46416d7dc80c488ba1c2fad5e4c0d307" + } + }, + "metadata": {} + }, + { + "output_type": "display_data", + "data": { + "text/plain": "Output()", + "application/vnd.jupyter.widget-view+json": { + "version_major": 2, + "version_minor": 0, + "model_id": "6eeaba734d8f4348a42cb3ce0b7da2c9" + } + }, + "metadata": {} + } + ], + "source": [ + "positions = np.loadtxt('frames/particles-frame-0.nptxt').astype(np.float32)\n", + "plot = k3d.plot()\n", + "points = k3d.points(positions, point_size=0.4, shader='3dSpecular')\n", + "plot += points\n", + "plot.display()" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] + } + ], + "metadata": { + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.6-final" + }, + "orig_nbformat": 2, + "kernelspec": { + "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd", + "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)" + } + }, + "nbformat": 4, + "nbformat_minor": 2 +} \ No newline at end of file diff --git a/scenes/cell-growth/export-particles.py b/scenes/view_particles_in_notebook.py similarity index 73% rename from scenes/cell-growth/export-particles.py rename to scenes/view_particles_in_notebook.py index 014cdd51..5d88a00d 100644 --- a/scenes/cell-growth/export-particles.py +++ b/scenes/view_particles_in_notebook.py @@ -4,10 +4,12 @@ from manta import * # solver params -dim = 2 +dim = 3 +# dim = 2 particleNumber = 2 res = 64 gs = vec3(res,res,res) + if (dim==2): gs.z=1 particleNumber = 3 # use more particles in 2d @@ -46,10 +48,10 @@ sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) #main loop -for t in range(20): +for t in range(200): mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) - # APIC + # Affine Particle in Cell (APIC) method pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False) apicMapPartsToMAC(flags=flags, vel=vel, parts=pp, partVel=pVel, cpx=pCx, cpy=pCy, cpz=pCz, mass=mass) extrapolateMACFromWeight(vel=vel , distance=2, weight=tmpVec3) @@ -70,8 +72,30 @@ s.step() - file_name = 'results/particles-frame-%d.txt' % s.frame + path = './frames/' + file_name = path + 'particles-frame-%d.nptxt' % s.frame pp.save(file_name) + + # The following lines read in the text file exported with BasicParticleSystem and converts it to a NumPy array format. + # NumPy is then able to read the file. + # file = open(file_name, 'r') + # lines = file.read().split('\n') + # file.close() + # particles = [] + # lines.pop(0) + # lines.pop() + + # for line in lines: + # token = line.split(']').pop(0) + # coordinates = token.split('[').pop(1) + # coordinates = coordinates.replace('+', '') + # coordinates = coordinates.replace(',', ' ') + # particles.append(coordinates + '\n') + + # file = open(file_name, 'w') + # file.writelines(particles) + # file.close() + diff --git a/source/particle.cpp b/source/particle.cpp index 11d1641d..57fa2b7c 100644 --- a/source/particle.cpp +++ b/source/particle.cpp @@ -154,6 +154,22 @@ void BasicParticleSystem::writeParticlesText(const string name) const ofs.close(); } +void BasicParticleSystem::writeParticlesNpText(const string name) const +{ + Vec3 positions; + ofstream ofs(name.c_str()); + + if(!ofs.good()) errMsg("can't open file!"); + + for(IndexInt i=0; i < this->size(); ++i) { + positions = this->getPos(i); + ofs << positions[0] << " " << positions[1] << " " << positions[2]; + ofs << "\n"; + } + + ofs.close(); +} + void BasicParticleSystem::writeParticlesRawPositionsGz(const string name) const { # if NO_ZLIB!=1 @@ -207,6 +223,8 @@ void BasicParticleSystem::save(const string name) const string ext = name.substr(name.find_last_of('.')); if(ext == ".txt") this->writeParticlesText(name); + else if(ext == ".nptxt") + this->writeParticlesNpText(name); else if(ext == ".uni") writeParticlesUni(name, this); else if(ext == ".raw") // raw = uni for now diff --git a/source/particle.h b/source/particle.h index 079f376a..a9b5f6ab 100644 --- a/source/particle.h +++ b/source/particle.h @@ -200,6 +200,10 @@ PYTHON() class BasicParticleSystem : public ParticleSystem { //! save to text file void writeParticlesText(const std::string name) const; + + //! save to numpy text file + void writeParticlesNpText(const std::string name) const; + //! other output formats void writeParticlesRawPositionsGz(const std::string name) const; void writeParticlesRawVelocityGz(const std::string name) const; From 8469b07ddf9dfb7233a51bb3cd7686cdbc72898e Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Thu, 2 Jul 2020 00:54:51 -0400 Subject: [PATCH 04/15] Added the method BasicParticleSystem.writeParticlesNumpyText which serializes the particle coordinates in NumPy text format. The particle coordinates can be read from a Jupyter notebook and visualized with K3D-Jupyter. --- scenes/view_particles_in_notebook.ipynb | 26 +++++++------------------ scenes/view_particles_in_notebook.py | 24 ++--------------------- source/particle.cpp | 12 +++++++----- source/particle.h | 4 ++-- 4 files changed, 18 insertions(+), 48 deletions(-) diff --git a/scenes/view_particles_in_notebook.ipynb b/scenes/view_particles_in_notebook.ipynb index b4d62ecc..7824eba6 100644 --- a/scenes/view_particles_in_notebook.ipynb +++ b/scenes/view_particles_in_notebook.ipynb @@ -12,7 +12,7 @@ }, { "cell_type": "code", - "execution_count": 4, + "execution_count": 3, "metadata": {}, "outputs": [ { @@ -22,7 +22,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "dc015d82dedc4ed1a40a64c9ac473461" + "model_id": "0e0a5ef4bff240f5969982c65a22206a" } }, "metadata": {} @@ -34,7 +34,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "4f43755aff934a1981a52faf60c0ef39" + "model_id": "7d368ed0ef33419097359475b5b8390e" } }, "metadata": {} @@ -43,8 +43,8 @@ "source": [ "# View 50 frames at a time\n", "\n", - "start = 50\n", - "stop = 100\n", + "start = 0\n", + "stop = 49\n", "\n", "if start > 0:\n", " offset = start\n", @@ -64,21 +64,9 @@ }, { "cell_type": "code", - "execution_count": 7, + "execution_count": 2, "metadata": {}, "outputs": [ - { - "output_type": "display_data", - "data": { - "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "46416d7dc80c488ba1c2fad5e4c0d307" - } - }, - "metadata": {} - }, { "output_type": "display_data", "data": { @@ -86,7 +74,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "6eeaba734d8f4348a42cb3ce0b7da2c9" + "model_id": "cb2dd2dd2645492bb35b24809bcdc72c" } }, "metadata": {} diff --git a/scenes/view_particles_in_notebook.py b/scenes/view_particles_in_notebook.py index 5d88a00d..4584b00d 100644 --- a/scenes/view_particles_in_notebook.py +++ b/scenes/view_particles_in_notebook.py @@ -72,29 +72,9 @@ s.step() - path = './frames/' - file_name = path + 'particles-frame-%d.nptxt' % s.frame + file_name = './frames/' + 'particles-frame-%d.nptxt' % s.frame pp.save(file_name) - - # The following lines read in the text file exported with BasicParticleSystem and converts it to a NumPy array format. - # NumPy is then able to read the file. - # file = open(file_name, 'r') - # lines = file.read().split('\n') - # file.close() - # particles = [] - # lines.pop(0) - # lines.pop() - - # for line in lines: - # token = line.split(']').pop(0) - # coordinates = token.split('[').pop(1) - # coordinates = coordinates.replace('+', '') - # coordinates = coordinates.replace(',', ' ') - # particles.append(coordinates + '\n') - - # file = open(file_name, 'w') - # file.writelines(particles) - # file.close() + diff --git a/source/particle.cpp b/source/particle.cpp index 57fa2b7c..e1f47538 100644 --- a/source/particle.cpp +++ b/source/particle.cpp @@ -154,7 +154,10 @@ void BasicParticleSystem::writeParticlesText(const string name) const ofs.close(); } -void BasicParticleSystem::writeParticlesNpText(const string name) const +// The writeParticlesNumPyText method serializes the coordinates of the particles in NumPy text format. +// The NumPy text files can be read from a Jupyter notebook to instantiate NumPy arrays. +// The NumPy arrays can be used to visualize the particles in a Jupyter notebook using the K3D library. +void BasicParticleSystem::writeParticlesNumPyText(const string name) const { Vec3 positions; ofstream ofs(name.c_str()); @@ -163,10 +166,9 @@ void BasicParticleSystem::writeParticlesNpText(const string name) const for(IndexInt i=0; i < this->size(); ++i) { positions = this->getPos(i); - ofs << positions[0] << " " << positions[1] << " " << positions[2]; - ofs << "\n"; + ofs << positions[0] << " " << positions[1] << " " << positions[2] << "\n"; } - + ofs.close(); } @@ -224,7 +226,7 @@ void BasicParticleSystem::save(const string name) const if(ext == ".txt") this->writeParticlesText(name); else if(ext == ".nptxt") - this->writeParticlesNpText(name); + this->writeParticlesNumPyText(name); else if(ext == ".uni") writeParticlesUni(name, this); else if(ext == ".raw") // raw = uni for now diff --git a/source/particle.h b/source/particle.h index a9b5f6ab..2f91e54d 100644 --- a/source/particle.h +++ b/source/particle.h @@ -201,8 +201,8 @@ PYTHON() class BasicParticleSystem : public ParticleSystem { //! save to text file void writeParticlesText(const std::string name) const; - //! save to numpy text file - void writeParticlesNpText(const std::string name) const; + //! save to NumPy text file + void writeParticlesNumPyText(const std::string name) const; //! other output formats void writeParticlesRawPositionsGz(const std::string name) const; From cb061051876eba48b67695dddbce0e42a1bd4130 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Thu, 2 Jul 2020 08:28:36 -0400 Subject: [PATCH 05/15] Small changes to the notebook. --- scenes/view_particles_in_notebook.ipynb | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/scenes/view_particles_in_notebook.ipynb b/scenes/view_particles_in_notebook.ipynb index 7824eba6..bc6a518e 100644 --- a/scenes/view_particles_in_notebook.ipynb +++ b/scenes/view_particles_in_notebook.ipynb @@ -12,7 +12,7 @@ }, { "cell_type": "code", - "execution_count": 3, + "execution_count": 2, "metadata": {}, "outputs": [ { @@ -22,7 +22,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "0e0a5ef4bff240f5969982c65a22206a" + "model_id": "17f27373a6c54bf5966f364a96882600" } }, "metadata": {} @@ -34,7 +34,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "7d368ed0ef33419097359475b5b8390e" + "model_id": "070ba65666b8407794596c0157bdd6bb" } }, "metadata": {} From b915cd605cbf6a252737c5ee9094c5403298e313 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Thu, 16 Jul 2020 20:58:35 -0400 Subject: [PATCH 06/15] Minor changes to the view_particles_in_notebook.ipynb file. --- scenes/view_particles_in_notebook.ipynb | 60 ++++++++++--------------- scenes/view_particles_in_notebook.py | 2 +- 2 files changed, 25 insertions(+), 37 deletions(-) diff --git a/scenes/view_particles_in_notebook.ipynb b/scenes/view_particles_in_notebook.ipynb index bc6a518e..45413390 100644 --- a/scenes/view_particles_in_notebook.ipynb +++ b/scenes/view_particles_in_notebook.ipynb @@ -18,15 +18,29 @@ { "output_type": "display_data", "data": { - "text/plain": "Plot(antialias=3, axes=['x', 'y', 'z'], axes_helper=1.0, background_color=16777215, camera=[2, -3, 0.2, 0.0, 0…", + "text/plain": "Output()", "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "17f27373a6c54bf5966f364a96882600" + "model_id": "b32e24084a764b3f960f19125f2df785" } }, "metadata": {} - }, + } + ], + "source": [ + "positions = np.loadtxt('frames/particles-frame-0.nptxt').astype(np.float32)\n", + "plot = k3d.plot()\n", + "points = k3d.points(positions, point_size=0.4, shader='3dSpecular')\n", + "plot += points\n", + "plot.display()" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": {}, + "outputs": [ { "output_type": "display_data", "data": { @@ -34,7 +48,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "070ba65666b8407794596c0157bdd6bb" + "model_id": "7abf44e35b4c430aba7bf0c6d17fba96" } }, "metadata": {} @@ -62,32 +76,6 @@ "plot.display()" ] }, - { - "cell_type": "code", - "execution_count": 2, - "metadata": {}, - "outputs": [ - { - "output_type": "display_data", - "data": { - "text/plain": "Output()", - "application/vnd.jupyter.widget-view+json": { - "version_major": 2, - "version_minor": 0, - "model_id": "cb2dd2dd2645492bb35b24809bcdc72c" - } - }, - "metadata": {} - } - ], - "source": [ - "positions = np.loadtxt('frames/particles-frame-0.nptxt').astype(np.float32)\n", - "plot = k3d.plot()\n", - "points = k3d.points(positions, point_size=0.4, shader='3dSpecular')\n", - "plot += points\n", - "plot.display()" - ] - }, { "cell_type": "code", "execution_count": null, @@ -97,6 +85,11 @@ } ], "metadata": { + "kernelspec": { + "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)", + "language": "python", + "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd" + }, "language_info": { "codemirror_mode": { "name": "ipython", @@ -108,13 +101,8 @@ "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.7.6-final" - }, - "orig_nbformat": 2, - "kernelspec": { - "name": "python37664bitanaconda3condab615bb15fcd4464bb2000e7d9e446dfd", - "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)" } }, "nbformat": 4, - "nbformat_minor": 2 + "nbformat_minor": 4 } \ No newline at end of file diff --git a/scenes/view_particles_in_notebook.py b/scenes/view_particles_in_notebook.py index 4584b00d..54e95dc9 100644 --- a/scenes/view_particles_in_notebook.py +++ b/scenes/view_particles_in_notebook.py @@ -72,7 +72,7 @@ s.step() - file_name = './frames/' + 'particles-frame-%d.nptxt' % s.frame + file_name = './frames/particles-frame-%d.nptxt' % s.frame pp.save(file_name) From 635639ff3d9a549bce713ea286d57e57b83bb8d9 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Fri, 24 Jul 2020 04:57:45 -0400 Subject: [PATCH 07/15] Added the openVDB source code but I haven't been able to compile the version of mantaflow that supports openVDB. --- CMakeLists.txt | 69 +- openvdb/CMakeCache.txt | 380 ++ .../3.18.0-rc2/CMakeCCompiler.cmake | 77 + .../3.18.0-rc2/CMakeCXXCompiler.cmake | 89 + .../CMakeFiles/3.18.0-rc2/CMakeSystem.cmake | 15 + .../3.18.0-rc2/CompilerIdC/CMakeCCompilerId.c | 671 +++ .../CMakeFiles/3.18.0-rc2/CompilerIdC/a.out | Bin 0 -> 8616 bytes .../CompilerIdCXX/CMakeCXXCompilerId.cpp | 660 +++ .../CMakeFiles/3.18.0-rc2/CompilerIdCXX/a.out | Bin 0 -> 8600 bytes openvdb/CMakeFiles/CMakeOutput.log | 266 + openvdb/CMakeFiles/cmake.check_cache | 1 + openvdb/CMakeLists.txt | 531 ++ openvdb/COPYRIGHT | 2 + openvdb/Exceptions.h | 93 + openvdb/Grid.cc | 433 ++ openvdb/Grid.h | 1827 ++++++ openvdb/LICENSE | 373 ++ openvdb/Makefile | 1057 ++++ openvdb/MetaMap.cc | 209 + openvdb/MetaMap.h | 217 + openvdb/Metadata.cc | 189 + 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528 ++ openvdb/unittest/TestAttributeGroup.cc | 560 ++ openvdb/unittest/TestAttributeSet.cc | 1108 ++++ openvdb/unittest/TestBBox.cc | 95 + openvdb/unittest/TestClip.cc | 248 + openvdb/unittest/TestConjGradient.cc | 211 + openvdb/unittest/TestCoord.cc | 396 ++ openvdb/unittest/TestCpt.cc | 535 ++ openvdb/unittest/TestCurl.cc | 561 ++ openvdb/unittest/TestDelayedLoadMetadata.cc | 215 + openvdb/unittest/TestDense.cc | 837 +++ openvdb/unittest/TestDenseSparseTools.cc | 380 ++ openvdb/unittest/TestDiagnostics.cc | 384 ++ openvdb/unittest/TestDivergence.cc | 679 +++ openvdb/unittest/TestDoubleMetadata.cc | 46 + openvdb/unittest/TestExceptions.cc | 80 + openvdb/unittest/TestFile.cc | 2729 +++++++++ openvdb/unittest/TestFindActiveValues.cc | 305 + openvdb/unittest/TestFloatMetadata.cc | 46 + openvdb/unittest/TestGradient.cc | 786 +++ openvdb/unittest/TestGrid.cc | 523 ++ openvdb/unittest/TestGridBbox.cc | 83 + openvdb/unittest/TestGridDescriptor.cc | 159 + openvdb/unittest/TestGridIO.cc | 205 + openvdb/unittest/TestGridTransformer.cc | 239 + openvdb/unittest/TestIndexFilter.cc | 1084 ++++ openvdb/unittest/TestIndexIterator.cc | 396 ++ openvdb/unittest/TestInit.cc | 91 + openvdb/unittest/TestInt32Metadata.cc | 43 + openvdb/unittest/TestInt64Metadata.cc | 43 + openvdb/unittest/TestInternalOrigin.cc | 75 + openvdb/unittest/TestLaplacian.cc | 462 ++ openvdb/unittest/TestLeaf.cc | 535 ++ openvdb/unittest/TestLeafBool.cc | 606 ++ openvdb/unittest/TestLeafIO.cc | 141 + openvdb/unittest/TestLeafManager.cc | 324 + openvdb/unittest/TestLeafMask.cc | 613 ++ openvdb/unittest/TestLeafOrigin.cc | 107 + .../unittest/TestLevelSetRayIntersector.cc | 383 ++ openvdb/unittest/TestLevelSetUtil.cc | 242 + openvdb/unittest/TestLinearInterp.cc | 1070 ++++ openvdb/unittest/TestMaps.cc | 799 +++ openvdb/unittest/TestMat4Metadata.cc | 100 + openvdb/unittest/TestMath.cc | 223 + openvdb/unittest/TestMeanCurvature.cc | 810 +++ openvdb/unittest/TestMeshToVolume.cc | 149 + openvdb/unittest/TestMetaMap.cc | 373 ++ openvdb/unittest/TestMetadata.cc | 163 + openvdb/unittest/TestMetadataIO.cc | 127 + openvdb/unittest/TestMultiResGrid.cc | 341 ++ openvdb/unittest/TestName.cc | 81 + openvdb/unittest/TestNodeIterator.cc | 375 ++ openvdb/unittest/TestNodeManager.cc | 153 + openvdb/unittest/TestNodeMask.cc | 371 ++ openvdb/unittest/TestParticleAtlas.cc | 190 + openvdb/unittest/TestParticlesToLevelSet.cc | 580 ++ openvdb/unittest/TestPointAdvect.cc | 462 ++ openvdb/unittest/TestPointAttribute.cc | 433 ++ openvdb/unittest/TestPointConversion.cc | 1280 ++++ openvdb/unittest/TestPointCount.cc | 849 +++ openvdb/unittest/TestPointDataLeaf.cc | 1550 +++++ openvdb/unittest/TestPointDelete.cc | 249 + openvdb/unittest/TestPointGroup.cc | 699 +++ openvdb/unittest/TestPointIndexGrid.cc | 316 + openvdb/unittest/TestPointMask.cc | 352 ++ openvdb/unittest/TestPointMove.cc | 1176 ++++ openvdb/unittest/TestPointPartitioner.cc | 98 + openvdb/unittest/TestPointSample.cc | 551 ++ openvdb/unittest/TestPointScatter.cc | 703 +++ openvdb/unittest/TestPointsToMask.cc | 172 + openvdb/unittest/TestPoissonSolver.cc | 511 ++ openvdb/unittest/TestPotentialFlow.cc | 429 ++ openvdb/unittest/TestPrePostAPI.cc | 686 +++ openvdb/unittest/TestQuadraticInterp.cc | 330 ++ openvdb/unittest/TestQuantizedUnitVec.cc | 146 + openvdb/unittest/TestQuat.cc | 282 + openvdb/unittest/TestRay.cc | 463 ++ openvdb/unittest/TestStats.cc | 756 +++ openvdb/unittest/TestStream.cc | 248 + openvdb/unittest/TestStreamCompression.cc | 660 +++ openvdb/unittest/TestStringMetadata.cc | 43 + openvdb/unittest/TestTools.cc | 2936 +++++++++ openvdb/unittest/TestTopologyToLevelSet.cc | 54 + openvdb/unittest/TestTransform.cc | 535 ++ openvdb/unittest/TestTree.cc | 3166 ++++++++++ openvdb/unittest/TestTreeCombine.cc | 1044 ++++ openvdb/unittest/TestTreeGetSetValues.cc | 436 ++ openvdb/unittest/TestTreeIterators.cc | 582 ++ openvdb/unittest/TestTreeVisitor.cc | 344 ++ openvdb/unittest/TestTypes.cc | 468 ++ openvdb/unittest/TestUtil.cc | 674 +++ openvdb/unittest/TestValueAccessor.cc | 568 ++ openvdb/unittest/TestVec2Metadata.cc | 97 + openvdb/unittest/TestVec3Metadata.cc | 97 + openvdb/unittest/TestVolumeRayIntersector.cc | 301 + openvdb/unittest/TestVolumeToMesh.cc | 126 + openvdb/unittest/TestVolumeToSpheres.cc | 243 + openvdb/unittest/main.cc | 246 + openvdb/unittest/util.h | 140 + openvdb/util/CpuTimer.h | 174 + openvdb/util/Formats.cc | 148 + openvdb/util/Formats.h | 124 + openvdb/util/MapsUtil.h | 294 + openvdb/util/Name.h | 41 + openvdb/util/NodeMasks.h | 1415 +++++ openvdb/util/NullInterrupter.h | 59 + openvdb/util/PagedArray.h | 749 +++ openvdb/util/Util.cc | 46 + openvdb/util/Util.h | 135 + openvdb/util/logging.h | 319 + openvdb/version.h | 219 + openvdb/viewer/Camera.cc | 249 + openvdb/viewer/Camera.h | 66 + openvdb/viewer/ClipBox.cc | 266 + openvdb/viewer/ClipBox.h | 60 + openvdb/viewer/Font.cc | 169 + openvdb/viewer/Font.h | 39 + openvdb/viewer/RenderModules.cc | 1665 ++++++ openvdb/viewer/RenderModules.h | 182 + openvdb/viewer/Viewer.cc | 1219 ++++ openvdb/viewer/Viewer.h | 62 + scenes/bacilli_on_agar.py | 143 + scenes/flip01_simple.py | 1 + scenes/flip02_surface.py | 1 + scenes/freesurface.py | 2 +- scenes/view_particles_in_notebook.ipynb | 6 +- 305 files changed, 181096 insertions(+), 38 deletions(-) create mode 100644 openvdb/CMakeCache.txt create mode 100644 openvdb/CMakeFiles/3.18.0-rc2/CMakeCCompiler.cmake create mode 100644 openvdb/CMakeFiles/3.18.0-rc2/CMakeCXXCompiler.cmake create mode 100644 openvdb/CMakeFiles/3.18.0-rc2/CMakeSystem.cmake create mode 100644 openvdb/CMakeFiles/3.18.0-rc2/CompilerIdC/CMakeCCompilerId.c create mode 100755 openvdb/CMakeFiles/3.18.0-rc2/CompilerIdC/a.out create mode 100644 openvdb/CMakeFiles/3.18.0-rc2/CompilerIdCXX/CMakeCXXCompilerId.cpp create mode 100755 openvdb/CMakeFiles/3.18.0-rc2/CompilerIdCXX/a.out create mode 100644 openvdb/CMakeFiles/CMakeOutput.log create mode 100644 openvdb/CMakeFiles/cmake.check_cache create mode 100644 openvdb/CMakeLists.txt create mode 100644 openvdb/COPYRIGHT create mode 100644 openvdb/Exceptions.h create mode 100644 openvdb/Grid.cc create mode 100644 openvdb/Grid.h create mode 100644 openvdb/LICENSE create mode 100644 openvdb/Makefile create mode 100644 openvdb/MetaMap.cc create mode 100644 openvdb/MetaMap.h create mode 100644 openvdb/Metadata.cc create mode 100644 openvdb/Metadata.h create mode 100644 openvdb/Platform.cc create mode 100644 openvdb/Platform.h create mode 100644 openvdb/PlatformConfig.h create mode 100644 openvdb/README create mode 100644 openvdb/Types.h create mode 100644 openvdb/cmd/CMakeLists.txt create mode 100644 openvdb/cmd/openvdb_lod.cc create mode 100644 openvdb/cmd/openvdb_print.cc create mode 100644 openvdb/cmd/openvdb_render.cc create mode 100644 openvdb/cmd/openvdb_view.cc create mode 100644 openvdb/io/Archive.cc create mode 100644 openvdb/io/Archive.h create mode 100644 openvdb/io/Compression.cc create mode 100644 openvdb/io/Compression.h create mode 100644 openvdb/io/DelayedLoadMetadata.cc create mode 100644 openvdb/io/DelayedLoadMetadata.h create mode 100644 openvdb/io/File.cc create mode 100644 openvdb/io/File.h create mode 100644 openvdb/io/GridDescriptor.cc create mode 100644 openvdb/io/GridDescriptor.h create mode 100644 openvdb/io/Queue.cc create mode 100644 openvdb/io/Queue.h create mode 100644 openvdb/io/Stream.cc create mode 100644 openvdb/io/Stream.h create mode 100644 openvdb/io/TempFile.cc create mode 100644 openvdb/io/TempFile.h create mode 100644 openvdb/io/io.h create mode 100644 openvdb/lib/libopenvdb.7.0.0.dylib create mode 120000 openvdb/lib/libopenvdb.7.0.dylib create mode 120000 openvdb/lib/libopenvdb.dylib create mode 100644 openvdb/math/BBox.h create mode 100644 openvdb/math/ConjGradient.h create mode 100644 openvdb/math/Coord.h create mode 100644 openvdb/math/DDA.h create mode 100644 openvdb/math/FiniteDifference.h create mode 100644 openvdb/math/LegacyFrustum.h create mode 100644 openvdb/math/Maps.cc create mode 100644 openvdb/math/Maps.h create mode 100644 openvdb/math/Mat.h create mode 100644 openvdb/math/Mat3.h create mode 100644 openvdb/math/Mat4.h create mode 100644 openvdb/math/Math.h create mode 100644 openvdb/math/Operators.h create mode 100644 openvdb/math/Proximity.cc create mode 100644 openvdb/math/Proximity.h create mode 100644 openvdb/math/QuantizedUnitVec.cc create mode 100644 openvdb/math/QuantizedUnitVec.h create mode 100644 openvdb/math/Quat.h create mode 100644 openvdb/math/Ray.h create mode 100644 openvdb/math/Stats.h create mode 100644 openvdb/math/Stencils.h create mode 100644 openvdb/math/Transform.cc create mode 100644 openvdb/math/Transform.h create mode 100644 openvdb/math/Tuple.h create mode 100644 openvdb/math/Vec2.h create mode 100644 openvdb/math/Vec3.h create mode 100644 openvdb/math/Vec4.h create mode 100644 openvdb/openvdb.cc create mode 100644 openvdb/openvdb.h create mode 100644 openvdb/points/AttributeArray.cc create mode 100644 openvdb/points/AttributeArray.h create mode 100644 openvdb/points/AttributeArrayString.cc create mode 100644 openvdb/points/AttributeArrayString.h create mode 100644 openvdb/points/AttributeGroup.cc create mode 100644 openvdb/points/AttributeGroup.h create mode 100644 openvdb/points/AttributeSet.cc create mode 100644 openvdb/points/AttributeSet.h create mode 100644 openvdb/points/IndexFilter.h create mode 100644 openvdb/points/IndexIterator.h create mode 100644 openvdb/points/PointAdvect.h create mode 100644 openvdb/points/PointAttribute.h create mode 100644 openvdb/points/PointConversion.h create mode 100644 openvdb/points/PointCount.h create mode 100644 openvdb/points/PointDataGrid.h create mode 100644 openvdb/points/PointDelete.h create mode 100644 openvdb/points/PointGroup.h create mode 100644 openvdb/points/PointMask.h create mode 100644 openvdb/points/PointMove.h create mode 100644 openvdb/points/PointSample.h create mode 100644 openvdb/points/PointScatter.h create mode 100644 openvdb/points/StreamCompression.cc create mode 100644 openvdb/points/StreamCompression.h create mode 100644 openvdb/points/points.cc create mode 100644 openvdb/python/CMakeLists.txt create mode 100644 openvdb/python/pyAccessor.h create mode 100644 openvdb/python/pyFloatGrid.cc create mode 100644 openvdb/python/pyGrid.h create mode 100644 openvdb/python/pyIntGrid.cc create mode 100644 openvdb/python/pyMetadata.cc create mode 100644 openvdb/python/pyOpenVDBModule.cc create mode 100644 openvdb/python/pyPointGrid.cc create mode 100644 openvdb/python/pyTransform.cc create mode 100644 openvdb/python/pyVec3Grid.cc create mode 100644 openvdb/python/pyopenvdb.h create mode 100644 openvdb/python/pyutil.h create mode 100644 openvdb/python/test/TestOpenVDB.py create mode 100644 openvdb/tools/ChangeBackground.h create mode 100644 openvdb/tools/Clip.h create mode 100644 openvdb/tools/Composite.h create mode 100644 openvdb/tools/Dense.h create mode 100644 openvdb/tools/DenseSparseTools.h create mode 100644 openvdb/tools/Diagnostics.h create mode 100644 openvdb/tools/Filter.h create mode 100644 openvdb/tools/FindActiveValues.h create mode 100644 openvdb/tools/GridOperators.h create mode 100644 openvdb/tools/GridTransformer.h create mode 100644 openvdb/tools/Interpolation.h create mode 100644 openvdb/tools/LevelSetAdvect.h create mode 100644 openvdb/tools/LevelSetFilter.h create mode 100644 openvdb/tools/LevelSetFracture.h create mode 100644 openvdb/tools/LevelSetMeasure.h create mode 100644 openvdb/tools/LevelSetMorph.h create mode 100644 openvdb/tools/LevelSetPlatonic.h create mode 100644 openvdb/tools/LevelSetRebuild.h create mode 100644 openvdb/tools/LevelSetSphere.h create mode 100644 openvdb/tools/LevelSetTracker.h create mode 100644 openvdb/tools/LevelSetUtil.h create mode 100644 openvdb/tools/Mask.h create mode 100644 openvdb/tools/MeshToVolume.h create mode 100644 openvdb/tools/Morphology.h create mode 100644 openvdb/tools/MultiResGrid.h create mode 100644 openvdb/tools/ParticleAtlas.h create mode 100644 openvdb/tools/ParticlesToLevelSet.h create mode 100644 openvdb/tools/PointAdvect.h create mode 100644 openvdb/tools/PointIndexGrid.h create mode 100644 openvdb/tools/PointPartitioner.h create mode 100644 openvdb/tools/PointScatter.h create mode 100644 openvdb/tools/PointsToMask.h create mode 100644 openvdb/tools/PoissonSolver.h create mode 100644 openvdb/tools/PotentialFlow.h create mode 100644 openvdb/tools/Prune.h create mode 100644 openvdb/tools/RayIntersector.h create mode 100644 openvdb/tools/RayTracer.h create mode 100644 openvdb/tools/SignedFloodFill.h create mode 100644 openvdb/tools/Statistics.h create mode 100644 openvdb/tools/TopologyToLevelSet.h create mode 100644 openvdb/tools/ValueTransformer.h create mode 100644 openvdb/tools/VectorTransformer.h create mode 100644 openvdb/tools/VelocityFields.h create mode 100644 openvdb/tools/VolumeAdvect.h create mode 100644 openvdb/tools/VolumeToMesh.h create mode 100644 openvdb/tools/VolumeToSpheres.h create mode 100644 openvdb/tree/InternalNode.h create mode 100644 openvdb/tree/Iterator.h create mode 100644 openvdb/tree/LeafBuffer.h create mode 100644 openvdb/tree/LeafManager.h create mode 100644 openvdb/tree/LeafNode.h create mode 100644 openvdb/tree/LeafNodeBool.h create mode 100644 openvdb/tree/LeafNodeMask.h create mode 100644 openvdb/tree/NodeManager.h create mode 100644 openvdb/tree/NodeUnion.h create mode 100644 openvdb/tree/RootNode.h create mode 100644 openvdb/tree/Tree.h create mode 100644 openvdb/tree/TreeIterator.h create mode 100644 openvdb/tree/ValueAccessor.h create mode 100644 openvdb/unittest/CMakeLists.txt create mode 100644 openvdb/unittest/TestAttributeArray.cc create mode 100644 openvdb/unittest/TestAttributeArrayString.cc create mode 100644 openvdb/unittest/TestAttributeGroup.cc create mode 100644 openvdb/unittest/TestAttributeSet.cc create mode 100644 openvdb/unittest/TestBBox.cc create mode 100644 openvdb/unittest/TestClip.cc create mode 100644 openvdb/unittest/TestConjGradient.cc create mode 100644 openvdb/unittest/TestCoord.cc create mode 100644 openvdb/unittest/TestCpt.cc create mode 100644 openvdb/unittest/TestCurl.cc create mode 100644 openvdb/unittest/TestDelayedLoadMetadata.cc create mode 100644 openvdb/unittest/TestDense.cc create mode 100644 openvdb/unittest/TestDenseSparseTools.cc create mode 100644 openvdb/unittest/TestDiagnostics.cc create mode 100644 openvdb/unittest/TestDivergence.cc create mode 100644 openvdb/unittest/TestDoubleMetadata.cc create mode 100644 openvdb/unittest/TestExceptions.cc create mode 100644 openvdb/unittest/TestFile.cc create mode 100644 openvdb/unittest/TestFindActiveValues.cc create mode 100644 openvdb/unittest/TestFloatMetadata.cc create mode 100644 openvdb/unittest/TestGradient.cc create mode 100644 openvdb/unittest/TestGrid.cc create mode 100644 openvdb/unittest/TestGridBbox.cc create mode 100644 openvdb/unittest/TestGridDescriptor.cc create mode 100644 openvdb/unittest/TestGridIO.cc create mode 100644 openvdb/unittest/TestGridTransformer.cc create mode 100644 openvdb/unittest/TestIndexFilter.cc create mode 100644 openvdb/unittest/TestIndexIterator.cc create mode 100644 openvdb/unittest/TestInit.cc create mode 100644 openvdb/unittest/TestInt32Metadata.cc create mode 100644 openvdb/unittest/TestInt64Metadata.cc create mode 100644 openvdb/unittest/TestInternalOrigin.cc create mode 100644 openvdb/unittest/TestLaplacian.cc create mode 100644 openvdb/unittest/TestLeaf.cc create mode 100644 openvdb/unittest/TestLeafBool.cc create mode 100644 openvdb/unittest/TestLeafIO.cc create mode 100644 openvdb/unittest/TestLeafManager.cc create mode 100644 openvdb/unittest/TestLeafMask.cc create mode 100644 openvdb/unittest/TestLeafOrigin.cc create mode 100644 openvdb/unittest/TestLevelSetRayIntersector.cc create mode 100644 openvdb/unittest/TestLevelSetUtil.cc create mode 100644 openvdb/unittest/TestLinearInterp.cc create mode 100644 openvdb/unittest/TestMaps.cc create mode 100644 openvdb/unittest/TestMat4Metadata.cc create mode 100644 openvdb/unittest/TestMath.cc create mode 100644 openvdb/unittest/TestMeanCurvature.cc create mode 100644 openvdb/unittest/TestMeshToVolume.cc create mode 100644 openvdb/unittest/TestMetaMap.cc create mode 100644 openvdb/unittest/TestMetadata.cc create mode 100644 openvdb/unittest/TestMetadataIO.cc create mode 100644 openvdb/unittest/TestMultiResGrid.cc create mode 100644 openvdb/unittest/TestName.cc create mode 100644 openvdb/unittest/TestNodeIterator.cc create mode 100644 openvdb/unittest/TestNodeManager.cc create mode 100644 openvdb/unittest/TestNodeMask.cc create mode 100644 openvdb/unittest/TestParticleAtlas.cc create mode 100644 openvdb/unittest/TestParticlesToLevelSet.cc create mode 100644 openvdb/unittest/TestPointAdvect.cc create mode 100644 openvdb/unittest/TestPointAttribute.cc create mode 100644 openvdb/unittest/TestPointConversion.cc create mode 100644 openvdb/unittest/TestPointCount.cc create mode 100644 openvdb/unittest/TestPointDataLeaf.cc create mode 100644 openvdb/unittest/TestPointDelete.cc create mode 100644 openvdb/unittest/TestPointGroup.cc create mode 100644 openvdb/unittest/TestPointIndexGrid.cc create mode 100644 openvdb/unittest/TestPointMask.cc create mode 100644 openvdb/unittest/TestPointMove.cc create mode 100644 openvdb/unittest/TestPointPartitioner.cc create mode 100644 openvdb/unittest/TestPointSample.cc create mode 100644 openvdb/unittest/TestPointScatter.cc create mode 100644 openvdb/unittest/TestPointsToMask.cc create mode 100644 openvdb/unittest/TestPoissonSolver.cc create mode 100644 openvdb/unittest/TestPotentialFlow.cc create mode 100644 openvdb/unittest/TestPrePostAPI.cc create mode 100644 openvdb/unittest/TestQuadraticInterp.cc create mode 100644 openvdb/unittest/TestQuantizedUnitVec.cc create mode 100644 openvdb/unittest/TestQuat.cc create mode 100644 openvdb/unittest/TestRay.cc create mode 100644 openvdb/unittest/TestStats.cc create mode 100644 openvdb/unittest/TestStream.cc create mode 100644 openvdb/unittest/TestStreamCompression.cc create mode 100644 openvdb/unittest/TestStringMetadata.cc create mode 100644 openvdb/unittest/TestTools.cc create mode 100644 openvdb/unittest/TestTopologyToLevelSet.cc create mode 100644 openvdb/unittest/TestTransform.cc create mode 100644 openvdb/unittest/TestTree.cc create mode 100644 openvdb/unittest/TestTreeCombine.cc create mode 100644 openvdb/unittest/TestTreeGetSetValues.cc create mode 100644 openvdb/unittest/TestTreeIterators.cc create mode 100644 openvdb/unittest/TestTreeVisitor.cc create mode 100644 openvdb/unittest/TestTypes.cc create mode 100644 openvdb/unittest/TestUtil.cc create mode 100644 openvdb/unittest/TestValueAccessor.cc create mode 100644 openvdb/unittest/TestVec2Metadata.cc create mode 100644 openvdb/unittest/TestVec3Metadata.cc create mode 100644 openvdb/unittest/TestVolumeRayIntersector.cc create mode 100644 openvdb/unittest/TestVolumeToMesh.cc create mode 100644 openvdb/unittest/TestVolumeToSpheres.cc create mode 100644 openvdb/unittest/main.cc create mode 100644 openvdb/unittest/util.h create mode 100644 openvdb/util/CpuTimer.h create mode 100644 openvdb/util/Formats.cc create mode 100644 openvdb/util/Formats.h create mode 100644 openvdb/util/MapsUtil.h create mode 100644 openvdb/util/Name.h create mode 100644 openvdb/util/NodeMasks.h create mode 100644 openvdb/util/NullInterrupter.h create mode 100644 openvdb/util/PagedArray.h create mode 100644 openvdb/util/Util.cc create mode 100644 openvdb/util/Util.h create mode 100644 openvdb/util/logging.h create mode 100644 openvdb/version.h create mode 100644 openvdb/viewer/Camera.cc create mode 100644 openvdb/viewer/Camera.h create mode 100644 openvdb/viewer/ClipBox.cc create mode 100644 openvdb/viewer/ClipBox.h create mode 100644 openvdb/viewer/Font.cc create mode 100644 openvdb/viewer/Font.h create mode 100644 openvdb/viewer/RenderModules.cc create mode 100644 openvdb/viewer/RenderModules.h create mode 100644 openvdb/viewer/Viewer.cc create mode 100644 openvdb/viewer/Viewer.h create mode 100644 scenes/bacilli_on_agar.py diff --git a/CMakeLists.txt b/CMakeLists.txt index c20803a2..8324169b 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -34,8 +34,9 @@ endif() if(APPLE) if(NOT CMAKE_PREFIX_PATH) set(CMAKE_PREFIX_PATH "/usr/local/opt/qt5/") # mac/homebrew (version independent) - #set(CMAKE_PREFIX_PATH "/home/myname/qt/5.5/clang_64") # other... - #set(CMAKE_PREFIX_PATH "/Users/Cesar/Qt/5.15.0/clang_64/") + # set(CMAKE_PREFIX_PATH "/User/Cesar/anaconda3/") # Anaconda QT + # set(CMAKE_PREFIX_PATH "/home/myname/qt/5.5/clang_64") # other... + # set(CMAKE_PREFIX_PATH "/Users/Cesar/Qt/5.15.0/clang_64/") endif() endif() @@ -449,38 +450,38 @@ endif(DOXYGEN_FOUND) set(PYTHON_INCLUDE_DIRS "/Users/Cesar/anaconda3/include/python3.7m/") set(PYTHON_LIBRARIES "/Users/Cesar/anaconda3/lib/libpython3.7m.dylib") # auto block -if(WIN32) - # convenience override for windows, typically the auto find doesnt work, so fall back to WIN_PYTHON_PATH - find_package(PythonLibs ${PYTHON_VER_ID} QUIET) - if(NOT PYTHONLIBS_FOUND) - set(PYTHON_INCLUDE_DIRS "${WIN_PYTHON_PATH}/include") - set(PYTHON_LIBRARIES "${WIN_PYTHON_PATH}/libs/python${PYTHON_VER_ID}.lib") - endif() -else() - # try to configure from python itself first - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('INCLUDEPY'))" OUTPUT_VARIABLE PYTHON_INCLUDE_DIRS) - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LIBDIR'))" OUTPUT_VARIABLE PYTHON_LIB1) - if(APPLE) - # LDLIBRARY doesnt seem to work for Macs... - set(PYTHON_LIB2 "../Python") - else() - execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LDLIBRARY'))" OUTPUT_VARIABLE PYTHON_LIB2) - endif() - set(PYTHON_LIBRARIES "${PYTHON_LIB1}/${PYTHON_LIB2}") - if(EXISTS "${PYTHON_INCLUDE_DIRS}" AND EXISTS "${PYTHON_LIBRARIES}") - message("Found python configuration") - else() - # otherwise, fall back to cmake find - if(NOT PYTHON_VERSION) - find_package(PythonLibs REQUIRED) # use any - else() - find_package(PythonLibs ${PYTHON_VER_ID} EXACT QUIET) # fixed version - endif() - if(NOT PYTHONLIBS_FOUND) - message(FATAL_ERROR "No python found, please manually set PYTHON_VERSION for cmake, or PYTHON_ paths in CMakeLists.txt") - endif() - endif() -endif() +# if(WIN32) +# # convenience override for windows, typically the auto find doesnt work, so fall back to WIN_PYTHON_PATH +# find_package(PythonLibs ${PYTHON_VER_ID} QUIET) +# if(NOT PYTHONLIBS_FOUND) +# set(PYTHON_INCLUDE_DIRS "${WIN_PYTHON_PATH}/include") +# set(PYTHON_LIBRARIES "${WIN_PYTHON_PATH}/libs/python${PYTHON_VER_ID}.lib") +# endif() +# else() +# # try to configure from python itself first +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('INCLUDEPY'))" OUTPUT_VARIABLE PYTHON_INCLUDE_DIRS) +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LIBDIR'))" OUTPUT_VARIABLE PYTHON_LIB1) +# if(APPLE) +# # LDLIBRARY doesnt seem to work for Macs... +# set(PYTHON_LIB2 "../Python") +# else() +# execute_process(COMMAND python${PYTHON_VER_ID} -c "import sys,sysconfig; sys.stdout.write(sysconfig.get_config_var('LDLIBRARY'))" OUTPUT_VARIABLE PYTHON_LIB2) +# endif() +# set(PYTHON_LIBRARIES "${PYTHON_LIB1}/${PYTHON_LIB2}") +# if(EXISTS "${PYTHON_INCLUDE_DIRS}" AND EXISTS "${PYTHON_LIBRARIES}") +# message("Found python configuration") +# else() +# # otherwise, fall back to cmake find +# if(NOT PYTHON_VERSION) +# find_package(PythonLibs REQUIRED) # use any +# else() +# find_package(PythonLibs 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COMPILER_ID "SDCC" +# if defined(__SDCC_VERSION_MAJOR) +# define COMPILER_VERSION_MAJOR DEC(__SDCC_VERSION_MAJOR) +# define COMPILER_VERSION_MINOR DEC(__SDCC_VERSION_MINOR) +# define COMPILER_VERSION_PATCH DEC(__SDCC_VERSION_PATCH) +# else + /* SDCC = VRP */ +# define COMPILER_VERSION_MAJOR DEC(SDCC/100) +# define COMPILER_VERSION_MINOR DEC(SDCC/10 % 10) +# define COMPILER_VERSION_PATCH DEC(SDCC % 10) +# endif + + +/* These compilers are either not known or too old to define an + identification macro. Try to identify the platform and guess that + it is the native compiler. */ +#elif defined(__hpux) || defined(__hpua) +# define COMPILER_ID "HP" + +#else /* unknown compiler */ +# define COMPILER_ID "" +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]"; +#ifdef SIMULATE_ID +char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]"; +#endif + +#ifdef __QNXNTO__ +char const* qnxnto = "INFO" ":" "qnxnto[]"; +#endif + +#if defined(__CRAYXE) || defined(__CRAYXC) +char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]"; +#endif + +#define STRINGIFY_HELPER(X) #X +#define STRINGIFY(X) STRINGIFY_HELPER(X) + +/* Identify known platforms by name. */ +#if defined(__linux) || defined(__linux__) || defined(linux) +# define PLATFORM_ID "Linux" + +#elif defined(__CYGWIN__) +# define PLATFORM_ID "Cygwin" + +#elif defined(__MINGW32__) +# define PLATFORM_ID "MinGW" + +#elif defined(__APPLE__) +# define PLATFORM_ID "Darwin" + +#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32) +# define PLATFORM_ID "Windows" + +#elif defined(__FreeBSD__) || defined(__FreeBSD) +# define PLATFORM_ID "FreeBSD" + +#elif defined(__NetBSD__) || defined(__NetBSD) +# define PLATFORM_ID "NetBSD" + +#elif defined(__OpenBSD__) || defined(__OPENBSD) +# define PLATFORM_ID "OpenBSD" + +#elif defined(__sun) || defined(sun) +# define PLATFORM_ID "SunOS" + +#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__) +# define PLATFORM_ID "AIX" + +#elif defined(__hpux) || defined(__hpux__) +# define PLATFORM_ID "HP-UX" + +#elif defined(__HAIKU__) +# define PLATFORM_ID "Haiku" + +#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS) +# define PLATFORM_ID "BeOS" + +#elif defined(__QNX__) || defined(__QNXNTO__) +# define PLATFORM_ID "QNX" + +#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__) +# define PLATFORM_ID "Tru64" + +#elif defined(__riscos) || defined(__riscos__) +# define PLATFORM_ID "RISCos" + +#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__) +# define PLATFORM_ID "SINIX" + +#elif defined(__UNIX_SV__) +# define PLATFORM_ID "UNIX_SV" + +#elif defined(__bsdos__) +# define PLATFORM_ID "BSDOS" + +#elif defined(_MPRAS) || defined(MPRAS) +# define PLATFORM_ID "MP-RAS" + +#elif defined(__osf) || defined(__osf__) +# define PLATFORM_ID "OSF1" + +#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv) +# define PLATFORM_ID "SCO_SV" + +#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX) +# define PLATFORM_ID "ULTRIX" + +#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX) +# define PLATFORM_ID "Xenix" + +#elif defined(__WATCOMC__) +# if defined(__LINUX__) +# define PLATFORM_ID "Linux" + +# elif defined(__DOS__) +# define PLATFORM_ID "DOS" + +# elif defined(__OS2__) +# define PLATFORM_ID "OS2" + +# elif defined(__WINDOWS__) +# define PLATFORM_ID "Windows3x" + +# else /* unknown platform */ +# define PLATFORM_ID +# endif + +#elif defined(__INTEGRITY) +# if defined(INT_178B) +# define PLATFORM_ID "Integrity178" + +# else /* regular Integrity */ +# define PLATFORM_ID "Integrity" +# endif + +#else /* unknown platform */ +# define PLATFORM_ID + +#endif + +/* For windows compilers MSVC and Intel we can determine + the architecture of the compiler being used. This is because + the compilers do not have flags that can change the architecture, + but rather depend on which compiler is being used +*/ +#if defined(_WIN32) && defined(_MSC_VER) +# if defined(_M_IA64) +# define ARCHITECTURE_ID "IA64" + +# elif defined(_M_X64) || defined(_M_AMD64) +# define ARCHITECTURE_ID "x64" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# elif defined(_M_ARM64) +# define ARCHITECTURE_ID "ARM64" + +# elif defined(_M_ARM) +# if _M_ARM == 4 +# define ARCHITECTURE_ID "ARMV4I" +# elif _M_ARM == 5 +# define ARCHITECTURE_ID "ARMV5I" +# else +# define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM) +# endif + +# elif defined(_M_MIPS) +# define ARCHITECTURE_ID "MIPS" + +# elif defined(_M_SH) +# define ARCHITECTURE_ID "SHx" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__WATCOMC__) +# if defined(_M_I86) +# define ARCHITECTURE_ID "I86" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC) +# if defined(__ICCARM__) +# define ARCHITECTURE_ID "ARM" + +# elif defined(__ICCRX__) +# define ARCHITECTURE_ID "RX" + +# elif defined(__ICCRH850__) +# define ARCHITECTURE_ID "RH850" + +# elif defined(__ICCRL78__) +# define ARCHITECTURE_ID "RL78" + +# elif defined(__ICCRISCV__) +# define ARCHITECTURE_ID "RISCV" + +# elif defined(__ICCAVR__) +# define ARCHITECTURE_ID "AVR" + +# elif defined(__ICC430__) +# define ARCHITECTURE_ID "MSP430" + +# elif defined(__ICCV850__) +# define ARCHITECTURE_ID "V850" + +# elif defined(__ICC8051__) +# define ARCHITECTURE_ID "8051" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__ghs__) +# if defined(__PPC64__) +# define ARCHITECTURE_ID "PPC64" + +# elif defined(__ppc__) +# define ARCHITECTURE_ID "PPC" + +# elif defined(__ARM__) +# define ARCHITECTURE_ID "ARM" + +# elif defined(__x86_64__) +# define ARCHITECTURE_ID "x64" + +# elif defined(__i386__) +# define ARCHITECTURE_ID "X86" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif +#else +# define ARCHITECTURE_ID +#endif + +/* Convert integer to decimal digit literals. */ +#define DEC(n) \ + ('0' + (((n) / 10000000)%10)), \ + ('0' + (((n) / 1000000)%10)), \ + ('0' + (((n) / 100000)%10)), \ + ('0' + (((n) / 10000)%10)), \ + ('0' + (((n) / 1000)%10)), \ + ('0' + (((n) / 100)%10)), \ + ('0' + (((n) / 10)%10)), \ + ('0' + ((n) % 10)) + +/* Convert integer to hex digit literals. */ +#define HEX(n) \ + ('0' + ((n)>>28 & 0xF)), \ + ('0' + ((n)>>24 & 0xF)), \ + ('0' + ((n)>>20 & 0xF)), \ + ('0' + ((n)>>16 & 0xF)), \ + ('0' + ((n)>>12 & 0xF)), \ + ('0' + ((n)>>8 & 0xF)), \ + ('0' + ((n)>>4 & 0xF)), \ + ('0' + ((n) & 0xF)) + +/* Construct a string literal encoding the version number components. */ +#ifdef COMPILER_VERSION_MAJOR +char const info_version[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[', + COMPILER_VERSION_MAJOR, +# ifdef COMPILER_VERSION_MINOR + '.', COMPILER_VERSION_MINOR, +# ifdef COMPILER_VERSION_PATCH + '.', COMPILER_VERSION_PATCH, +# ifdef COMPILER_VERSION_TWEAK + '.', COMPILER_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct a string literal encoding the internal version number. */ +#ifdef COMPILER_VERSION_INTERNAL +char const info_version_internal[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_', + 'i','n','t','e','r','n','a','l','[', + COMPILER_VERSION_INTERNAL,']','\0'}; +#endif + +/* Construct a string literal encoding the version number components. */ +#ifdef SIMULATE_VERSION_MAJOR +char const info_simulate_version[] = { + 'I', 'N', 'F', 'O', ':', + 's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[', + SIMULATE_VERSION_MAJOR, +# ifdef SIMULATE_VERSION_MINOR + '.', SIMULATE_VERSION_MINOR, +# ifdef SIMULATE_VERSION_PATCH + '.', SIMULATE_VERSION_PATCH, +# ifdef SIMULATE_VERSION_TWEAK + '.', SIMULATE_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]"; +char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]"; + + + + +#if !defined(__STDC__) +# if (defined(_MSC_VER) && !defined(__clang__)) \ + || (defined(__ibmxl__) || defined(__IBMC__)) +# define C_DIALECT "90" +# else +# define C_DIALECT +# endif +#elif __STDC_VERSION__ >= 201000L +# define C_DIALECT "11" +#elif __STDC_VERSION__ >= 199901L +# define C_DIALECT "99" +#else +# define C_DIALECT "90" +#endif +const char* info_language_dialect_default = + "INFO" ":" "dialect_default[" C_DIALECT "]"; + +/*--------------------------------------------------------------------------*/ + +#ifdef ID_VOID_MAIN +void main() {} +#else +# if defined(__CLASSIC_C__) +int main(argc, argv) int argc; char *argv[]; +# else +int main(int argc, char* argv[]) +# endif +{ + int require = 0; + require += info_compiler[argc]; + require += info_platform[argc]; + require += info_arch[argc]; +#ifdef COMPILER_VERSION_MAJOR + require += info_version[argc]; +#endif +#ifdef COMPILER_VERSION_INTERNAL + require += info_version_internal[argc]; +#endif +#ifdef SIMULATE_ID + require += info_simulate[argc]; +#endif +#ifdef SIMULATE_VERSION_MAJOR + require += info_simulate_version[argc]; +#endif +#if defined(__CRAYXE) || defined(__CRAYXC) + require += info_cray[argc]; +#endif + require += info_language_dialect_default[argc]; + (void)argv; + return require; +} +#endif diff --git a/openvdb/CMakeFiles/3.18.0-rc2/CompilerIdC/a.out b/openvdb/CMakeFiles/3.18.0-rc2/CompilerIdC/a.out new file mode 100755 index 0000000000000000000000000000000000000000..e808db50fe49df4b04ec03f39c6dd3f372422ff3 GIT binary patch literal 8616 zcmeHN&1(}u6rb&f2CcS2(TX2z3rdxeCap+O5Mr7(MQw|1Kn!)*B-?gj^TB3gTeMIQ zYHJbdt;gcYgMWhv9(wTLU*OSO#2$-?_jjhQp(QuwFx{j4wkj}<&_`VLKzD#?yxxm-iuO2k8d@v( zoiNhc`_=aU&BijMlvoFJuvBygZ7VgHS+O&~B#V_ zCML(GZlv?sf@PadGEykmX4E!v3v*2L6l}wt&pX-VsNrCDCcTD}UQ9|mV;Q!Yc6r8} zH%hjf42S3FDZJ@^VE)*2idH_C3<(K`gPsuz`NnWC91abKLc>Ftj#Sxs5v9JR?|J&( zzlN5y2YWygvT2{tftg+24uaeirXv3SHZ1p%}MY{@?tVNdBSggw*f%%o&2n7rXUguTE&4)!i0)S8aVI$gHtLUl$G zx&sN_uT%3XoOEz;nlLJtU2qZZm6(c@ghLYdNIWHRK;lP)aVX-~;cdd0=>KoP0S2T{ vLUdHh4{{=^@mxHkXI3ciVAIF;x+^q!&?k}$rl}~*i*6~!Q>gpn1qk^AYzYxN literal 0 HcmV?d00001 diff --git a/openvdb/CMakeFiles/3.18.0-rc2/CompilerIdCXX/CMakeCXXCompilerId.cpp b/openvdb/CMakeFiles/3.18.0-rc2/CompilerIdCXX/CMakeCXXCompilerId.cpp new file mode 100644 index 00000000..69cfdba6 --- /dev/null +++ b/openvdb/CMakeFiles/3.18.0-rc2/CompilerIdCXX/CMakeCXXCompilerId.cpp @@ -0,0 +1,660 @@ +/* This source file must have a .cpp extension so that all C++ compilers + recognize the extension without flags. Borland does not know .cxx for + example. */ +#ifndef __cplusplus +# error "A C compiler has been selected for C++." +#endif + + +/* Version number components: V=Version, R=Revision, P=Patch + Version date components: YYYY=Year, MM=Month, DD=Day */ + +#if defined(__COMO__) +# define COMPILER_ID "Comeau" + /* __COMO_VERSION__ = VRR */ +# define COMPILER_VERSION_MAJOR DEC(__COMO_VERSION__ / 100) +# define COMPILER_VERSION_MINOR DEC(__COMO_VERSION__ % 100) + +#elif defined(__INTEL_COMPILER) || defined(__ICC) +# define COMPILER_ID "Intel" +# if defined(_MSC_VER) +# define SIMULATE_ID "MSVC" +# endif +# if defined(__GNUC__) +# define SIMULATE_ID "GNU" +# endif + /* __INTEL_COMPILER = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__INTEL_COMPILER/100) +# define COMPILER_VERSION_MINOR DEC(__INTEL_COMPILER/10 % 10) +# if defined(__INTEL_COMPILER_UPDATE) +# define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER_UPDATE) +# else +# define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER % 10) +# endif +# if defined(__INTEL_COMPILER_BUILD_DATE) + /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */ +# define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE) +# endif +# if defined(_MSC_VER) + /* _MSC_VER = VVRR */ +# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100) +# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100) +# endif +# if defined(__GNUC__) +# define SIMULATE_VERSION_MAJOR DEC(__GNUC__) +# elif defined(__GNUG__) +# define SIMULATE_VERSION_MAJOR DEC(__GNUG__) +# endif +# if defined(__GNUC_MINOR__) +# define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__) +# endif +# if defined(__GNUC_PATCHLEVEL__) +# define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__) +# endif + +#elif defined(__PATHCC__) +# define COMPILER_ID "PathScale" +# define COMPILER_VERSION_MAJOR DEC(__PATHCC__) +# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__) +# if defined(__PATHCC_PATCHLEVEL__) +# define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__) +# endif + +#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__) +# define COMPILER_ID "Embarcadero" +# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF) +# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF) +# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__ & 0xFFFF) + +#elif defined(__BORLANDC__) +# define COMPILER_ID "Borland" + /* __BORLANDC__ = 0xVRR */ +# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8) +# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF) + +#elif defined(__WATCOMC__) && __WATCOMC__ < 1200 +# define COMPILER_ID "Watcom" + /* __WATCOMC__ = VVRR */ +# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100) +# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10) +# if (__WATCOMC__ % 10) > 0 +# define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10) +# endif + +#elif defined(__WATCOMC__) +# define COMPILER_ID "OpenWatcom" + /* __WATCOMC__ = VVRP + 1100 */ +# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100) +# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10) +# if (__WATCOMC__ % 10) > 0 +# define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10) +# endif + +#elif defined(__SUNPRO_CC) +# define COMPILER_ID "SunPro" +# if __SUNPRO_CC >= 0x5100 + /* __SUNPRO_CC = 0xVRRP */ +# define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12) +# define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF) +# define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC & 0xF) +# else + /* __SUNPRO_CC = 0xVRP */ +# define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8) +# define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF) +# define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC & 0xF) +# endif + +#elif defined(__HP_aCC) +# define COMPILER_ID "HP" + /* __HP_aCC = VVRRPP */ +# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000) +# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100) +# define COMPILER_VERSION_PATCH DEC(__HP_aCC % 100) + +#elif defined(__DECCXX) +# define COMPILER_ID "Compaq" + /* __DECCXX_VER = VVRRTPPPP */ +# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000) +# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000 % 100) +# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER % 10000) + +#elif defined(__IBMCPP__) && defined(__COMPILER_VER__) +# define COMPILER_ID "zOS" + /* __IBMCPP__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMCPP__ % 10) + +#elif defined(__ibmxl__) && defined(__clang__) +# define COMPILER_ID "XLClang" +# define COMPILER_VERSION_MAJOR DEC(__ibmxl_version__) +# define COMPILER_VERSION_MINOR DEC(__ibmxl_release__) +# define COMPILER_VERSION_PATCH DEC(__ibmxl_modification__) +# define COMPILER_VERSION_TWEAK DEC(__ibmxl_ptf_fix_level__) + + +#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800 +# define COMPILER_ID "XL" + /* __IBMCPP__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMCPP__ % 10) + +#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800 +# define COMPILER_ID "VisualAge" + /* __IBMCPP__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMCPP__ % 10) + +#elif defined(__PGI) +# define COMPILER_ID "PGI" +# define COMPILER_VERSION_MAJOR DEC(__PGIC__) +# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__) +# if defined(__PGIC_PATCHLEVEL__) +# define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__) +# endif + +#elif defined(_CRAYC) +# define COMPILER_ID "Cray" +# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR) +# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR) + +#elif defined(__TI_COMPILER_VERSION__) +# define COMPILER_ID "TI" + /* __TI_COMPILER_VERSION__ = VVVRRRPPP */ +# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000) +# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000 % 1000) +# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__ % 1000) + +#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version) +# define COMPILER_ID "Fujitsu" + +#elif defined(__ghs__) +# define COMPILER_ID "GHS" +/* __GHS_VERSION_NUMBER = VVVVRP */ +# ifdef __GHS_VERSION_NUMBER +# define COMPILER_VERSION_MAJOR DEC(__GHS_VERSION_NUMBER / 100) +# define COMPILER_VERSION_MINOR DEC(__GHS_VERSION_NUMBER / 10 % 10) +# define COMPILER_VERSION_PATCH DEC(__GHS_VERSION_NUMBER % 10) +# endif + +#elif defined(__SCO_VERSION__) +# define COMPILER_ID "SCO" + +#elif defined(__ARMCC_VERSION) && !defined(__clang__) +# define COMPILER_ID "ARMCC" +#if __ARMCC_VERSION >= 1000000 + /* __ARMCC_VERSION = VRRPPPP */ + # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000) + # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100) + # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION % 10000) +#else + /* __ARMCC_VERSION = VRPPPP */ + # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000) + # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10) + # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION % 10000) +#endif + + +#elif defined(__clang__) && defined(__apple_build_version__) +# define COMPILER_ID "AppleClang" +# if defined(_MSC_VER) +# define SIMULATE_ID "MSVC" +# endif +# define COMPILER_VERSION_MAJOR DEC(__clang_major__) +# define COMPILER_VERSION_MINOR DEC(__clang_minor__) +# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__) +# if defined(_MSC_VER) + /* _MSC_VER = VVRR */ +# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100) +# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100) +# endif +# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__) + +#elif defined(__clang__) && defined(__ARMCOMPILER_VERSION) +# define COMPILER_ID "ARMClang" + # define COMPILER_VERSION_MAJOR DEC(__ARMCOMPILER_VERSION/1000000) + # define COMPILER_VERSION_MINOR DEC(__ARMCOMPILER_VERSION/10000 % 100) + # define COMPILER_VERSION_PATCH DEC(__ARMCOMPILER_VERSION % 10000) +# define COMPILER_VERSION_INTERNAL DEC(__ARMCOMPILER_VERSION) + +#elif defined(__clang__) +# define COMPILER_ID "Clang" +# if defined(_MSC_VER) +# define SIMULATE_ID "MSVC" +# endif +# define COMPILER_VERSION_MAJOR DEC(__clang_major__) +# define COMPILER_VERSION_MINOR DEC(__clang_minor__) +# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__) +# if defined(_MSC_VER) + /* _MSC_VER = VVRR */ +# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100) +# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100) +# endif + +#elif defined(__GNUC__) || defined(__GNUG__) +# define COMPILER_ID "GNU" +# if defined(__GNUC__) +# define COMPILER_VERSION_MAJOR DEC(__GNUC__) +# else +# define COMPILER_VERSION_MAJOR DEC(__GNUG__) +# endif +# if defined(__GNUC_MINOR__) +# define COMPILER_VERSION_MINOR DEC(__GNUC_MINOR__) +# endif +# if defined(__GNUC_PATCHLEVEL__) +# define COMPILER_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__) +# endif + +#elif defined(_MSC_VER) +# define COMPILER_ID "MSVC" + /* _MSC_VER = VVRR */ +# define COMPILER_VERSION_MAJOR DEC(_MSC_VER / 100) +# define COMPILER_VERSION_MINOR DEC(_MSC_VER % 100) +# if defined(_MSC_FULL_VER) +# if _MSC_VER >= 1400 + /* _MSC_FULL_VER = VVRRPPPPP */ +# define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 100000) +# else + /* _MSC_FULL_VER = VVRRPPPP */ +# define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 10000) +# endif +# endif +# if defined(_MSC_BUILD) +# define COMPILER_VERSION_TWEAK DEC(_MSC_BUILD) +# endif + +#elif defined(__VISUALDSPVERSION__) || defined(__ADSPBLACKFIN__) || defined(__ADSPTS__) || defined(__ADSP21000__) +# define COMPILER_ID "ADSP" +#if defined(__VISUALDSPVERSION__) + /* __VISUALDSPVERSION__ = 0xVVRRPP00 */ +# define COMPILER_VERSION_MAJOR HEX(__VISUALDSPVERSION__>>24) +# define COMPILER_VERSION_MINOR HEX(__VISUALDSPVERSION__>>16 & 0xFF) +# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8 & 0xFF) 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Try to identify the platform and guess that + it is the native compiler. */ +#elif defined(__hpux) || defined(__hpua) +# define COMPILER_ID "HP" + +#else /* unknown compiler */ +# define COMPILER_ID "" +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]"; +#ifdef SIMULATE_ID +char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]"; +#endif + +#ifdef __QNXNTO__ +char const* qnxnto = "INFO" ":" "qnxnto[]"; +#endif + +#if defined(__CRAYXE) || defined(__CRAYXC) +char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]"; +#endif + +#define STRINGIFY_HELPER(X) #X +#define STRINGIFY(X) STRINGIFY_HELPER(X) + +/* Identify known platforms by name. */ +#if defined(__linux) || defined(__linux__) || defined(linux) +# define PLATFORM_ID "Linux" + +#elif defined(__CYGWIN__) +# define PLATFORM_ID "Cygwin" + +#elif defined(__MINGW32__) +# define PLATFORM_ID "MinGW" + +#elif defined(__APPLE__) +# define PLATFORM_ID "Darwin" + +#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32) +# define PLATFORM_ID "Windows" + +#elif defined(__FreeBSD__) || defined(__FreeBSD) +# define PLATFORM_ID "FreeBSD" + +#elif defined(__NetBSD__) || defined(__NetBSD) +# define PLATFORM_ID "NetBSD" + +#elif defined(__OpenBSD__) || defined(__OPENBSD) +# define PLATFORM_ID "OpenBSD" + +#elif defined(__sun) || defined(sun) +# define PLATFORM_ID "SunOS" + +#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__) +# define PLATFORM_ID "AIX" + +#elif defined(__hpux) || defined(__hpux__) +# define PLATFORM_ID "HP-UX" + +#elif defined(__HAIKU__) +# define PLATFORM_ID "Haiku" + +#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS) +# define PLATFORM_ID "BeOS" + +#elif defined(__QNX__) || defined(__QNXNTO__) +# define PLATFORM_ID "QNX" + +#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__) +# define PLATFORM_ID "Tru64" + +#elif defined(__riscos) || defined(__riscos__) +# define PLATFORM_ID "RISCos" + +#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__) +# define PLATFORM_ID "SINIX" + +#elif defined(__UNIX_SV__) +# define PLATFORM_ID "UNIX_SV" + +#elif defined(__bsdos__) +# define PLATFORM_ID "BSDOS" + +#elif defined(_MPRAS) || defined(MPRAS) +# define PLATFORM_ID "MP-RAS" + +#elif defined(__osf) || defined(__osf__) +# define PLATFORM_ID "OSF1" + +#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv) +# define PLATFORM_ID "SCO_SV" + +#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX) +# define PLATFORM_ID "ULTRIX" + +#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX) +# define PLATFORM_ID "Xenix" + +#elif defined(__WATCOMC__) +# if defined(__LINUX__) +# define PLATFORM_ID "Linux" + +# elif defined(__DOS__) +# define PLATFORM_ID "DOS" + +# elif defined(__OS2__) +# define PLATFORM_ID "OS2" + +# elif defined(__WINDOWS__) +# define PLATFORM_ID "Windows3x" + +# else /* unknown platform */ +# define PLATFORM_ID +# endif + +#elif defined(__INTEGRITY) +# if defined(INT_178B) +# define PLATFORM_ID "Integrity178" + +# else /* regular Integrity */ +# define PLATFORM_ID "Integrity" +# endif + +#else /* unknown platform */ +# define PLATFORM_ID + +#endif + +/* For windows compilers MSVC and Intel we can determine + the architecture of the compiler being used. This is because + the compilers do not have flags that can change the architecture, + but rather depend on which compiler is being used +*/ +#if defined(_WIN32) && defined(_MSC_VER) +# if defined(_M_IA64) +# define ARCHITECTURE_ID "IA64" + +# elif defined(_M_X64) || defined(_M_AMD64) +# define ARCHITECTURE_ID "x64" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# elif defined(_M_ARM64) +# define ARCHITECTURE_ID "ARM64" + +# elif defined(_M_ARM) +# if _M_ARM == 4 +# define ARCHITECTURE_ID "ARMV4I" +# elif _M_ARM == 5 +# define ARCHITECTURE_ID "ARMV5I" +# else +# define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM) +# endif + +# elif defined(_M_MIPS) +# define ARCHITECTURE_ID "MIPS" + +# elif defined(_M_SH) +# define ARCHITECTURE_ID "SHx" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__WATCOMC__) +# if defined(_M_I86) +# define ARCHITECTURE_ID "I86" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC) +# if defined(__ICCARM__) +# define ARCHITECTURE_ID "ARM" + +# elif defined(__ICCRX__) +# define ARCHITECTURE_ID "RX" + +# elif defined(__ICCRH850__) +# define ARCHITECTURE_ID "RH850" + +# elif defined(__ICCRL78__) +# define ARCHITECTURE_ID "RL78" + +# elif defined(__ICCRISCV__) +# define ARCHITECTURE_ID "RISCV" + +# elif defined(__ICCAVR__) +# define ARCHITECTURE_ID "AVR" + +# elif defined(__ICC430__) +# define ARCHITECTURE_ID "MSP430" + +# elif defined(__ICCV850__) +# define ARCHITECTURE_ID "V850" + +# elif defined(__ICC8051__) +# define ARCHITECTURE_ID "8051" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__ghs__) +# if defined(__PPC64__) +# define ARCHITECTURE_ID "PPC64" + +# elif defined(__ppc__) +# define ARCHITECTURE_ID "PPC" + +# elif defined(__ARM__) +# define ARCHITECTURE_ID "ARM" + +# elif defined(__x86_64__) +# define ARCHITECTURE_ID "x64" + +# elif defined(__i386__) +# define ARCHITECTURE_ID "X86" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif +#else +# define ARCHITECTURE_ID +#endif + +/* Convert integer to decimal digit literals. */ +#define DEC(n) \ + ('0' + (((n) / 10000000)%10)), \ + ('0' + (((n) / 1000000)%10)), \ + ('0' + (((n) / 100000)%10)), \ + ('0' + (((n) / 10000)%10)), \ + ('0' + (((n) / 1000)%10)), \ + ('0' + (((n) / 100)%10)), \ + ('0' + (((n) / 10)%10)), \ + ('0' + ((n) % 10)) + +/* Convert integer to hex digit literals. */ +#define HEX(n) \ + ('0' + ((n)>>28 & 0xF)), \ + ('0' + ((n)>>24 & 0xF)), \ + ('0' + ((n)>>20 & 0xF)), \ + ('0' + ((n)>>16 & 0xF)), \ + ('0' + ((n)>>12 & 0xF)), \ + ('0' + ((n)>>8 & 0xF)), \ + ('0' + ((n)>>4 & 0xF)), \ + ('0' + ((n) & 0xF)) + +/* Construct a string literal encoding the version number components. */ +#ifdef COMPILER_VERSION_MAJOR +char const info_version[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[', + COMPILER_VERSION_MAJOR, +# ifdef COMPILER_VERSION_MINOR + '.', COMPILER_VERSION_MINOR, +# ifdef COMPILER_VERSION_PATCH + '.', COMPILER_VERSION_PATCH, +# ifdef COMPILER_VERSION_TWEAK + '.', COMPILER_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct a string literal encoding the internal version number. */ +#ifdef COMPILER_VERSION_INTERNAL +char const info_version_internal[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_', + 'i','n','t','e','r','n','a','l','[', + COMPILER_VERSION_INTERNAL,']','\0'}; +#endif + +/* Construct a string literal encoding the version number components. */ +#ifdef SIMULATE_VERSION_MAJOR +char const info_simulate_version[] = { + 'I', 'N', 'F', 'O', ':', + 's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[', + SIMULATE_VERSION_MAJOR, +# ifdef SIMULATE_VERSION_MINOR + '.', SIMULATE_VERSION_MINOR, +# ifdef SIMULATE_VERSION_PATCH + '.', SIMULATE_VERSION_PATCH, +# ifdef SIMULATE_VERSION_TWEAK + '.', SIMULATE_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]"; +char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]"; + + + + +#if defined(__INTEL_COMPILER) && defined(_MSVC_LANG) && _MSVC_LANG < 201403L +# if defined(__INTEL_CXX11_MODE__) +# if defined(__cpp_aggregate_nsdmi) +# define CXX_STD 201402L +# else +# define CXX_STD 201103L +# endif +# else +# define CXX_STD 199711L +# endif +#elif defined(_MSC_VER) && defined(_MSVC_LANG) +# define CXX_STD _MSVC_LANG +#else +# define CXX_STD __cplusplus +#endif + +const char* info_language_dialect_default = "INFO" ":" "dialect_default[" +#if CXX_STD > 201703L + "20" +#elif CXX_STD >= 201703L + "17" +#elif CXX_STD >= 201402L + "14" +#elif CXX_STD >= 201103L + "11" +#else + "98" +#endif +"]"; + 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[/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks] + implicit libs: [c++] + implicit dirs: [/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/lib] + implicit fwks: [/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks] + + diff --git a/openvdb/CMakeFiles/cmake.check_cache b/openvdb/CMakeFiles/cmake.check_cache new file mode 100644 index 00000000..3dccd731 --- /dev/null +++ b/openvdb/CMakeFiles/cmake.check_cache @@ -0,0 +1 @@ +# This file is generated by cmake for dependency checking of the CMakeCache.txt file diff --git a/openvdb/CMakeLists.txt b/openvdb/CMakeLists.txt new file mode 100644 index 00000000..9501ff1a --- /dev/null +++ b/openvdb/CMakeLists.txt @@ -0,0 +1,531 @@ +# Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 +# +#[=======================================================================[ + + CMake Configuration for OpenVDB Core + +#]=======================================================================] + +cmake_minimum_required(VERSION 3.3) +project(OpenVDBCore) + +# Monitoring _ROOT variables +if(POLICY CMP0074) + cmake_policy(SET CMP0074 NEW) +endif() + +###### OpenVDB Core Options + +option(OPENVDB_CORE_SHARED "Build dynamically linked version of the core library." ON) +option(OPENVDB_CORE_STATIC "Build statically linked version of the core library." ON) + +set(OPENVDB_SHARED_LIBRARY_NAME "openvdb" CACHE STRING + "The base name of the built shared openvdb library. Prefixed by \"lib\" on UNIX platforms." +) +set(OPENVDB_STATIC_LIBRARY_NAME "openvdb" CACHE STRING + "The base name of the built static openvdb library. Prefixed by \"lib\"." +) + +mark_as_advanced( + OPENVDB_STATIC_LIBRARY_NAME + OPENVDB_SHARED_LIBRARY_NAME +) + +if(NOT OPENVDB_CORE_SHARED AND NOT OPENVDB_CORE_STATIC) + message(FATAL_ERROR "Both static and shared core OpenVDB libraries have been disabled. " + "At least one must be enabled when building the core library." + ) +endif() + +######################################################################### + +message(STATUS "----------------------------------------------------") +message(STATUS "------------- Configuring OpenVDBCore --------------") +message(STATUS "----------------------------------------------------") + +########################################################################## + +# Collect and configure lib dependencies + +if(USE_EXR) + find_package(IlmBase ${MINIMUM_ILMBASE_VERSION} REQUIRED) + find_package(OpenEXR ${MINIMUM_OPENEXR_VERSION} REQUIRED) + if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_OPENEXR_VERSION) + if(${OpenEXR_VERSION} VERSION_LESS FUTURE_MINIMUM_OPENEXR_VERSION) + message(DEPRECATION "Support for OpenEXR versions < ${FUTURE_MINIMUM_OPENEXR_VERSION} " + "is deprecated and will be removed.") + endif() + endif() +else() + find_package(IlmBase ${MINIMUM_ILMBASE_VERSION} REQUIRED COMPONENTS Half) +endif() + +if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_ILMBASE_VERSION) + if(${IlmBase_VERSION} VERSION_LESS FUTURE_MINIMUM_ILMBASE_VERSION) + message(DEPRECATION "Support for IlmBase versions < ${FUTURE_MINIMUM_ILMBASE_VERSION} " + "is deprecated and will be removed.") + endif() +endif() + +find_package(TBB ${MINIMUM_TBB_VERSION} REQUIRED COMPONENTS tbb) + +if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_TBB_VERSION) + if(${Tbb_VERSION} VERSION_LESS FUTURE_MINIMUM_TBB_VERSION) + message(DEPRECATION "Support for TBB versions < ${FUTURE_MINIMUM_TBB_VERSION} " + "is deprecated and will be removed.") + endif() +endif() + +find_package(ZLIB ${MINIMUM_ZLIB_VERSION} REQUIRED) + +if(USE_LOG4CPLUS) + find_package(Log4cplus ${MINIMUM_LOG4CPLUS_VERSION} REQUIRED) +endif() + +if(USE_BLOSC) + find_package(Blosc ${MINIMUM_BLOSC_VERSION} REQUIRED) + if(Blosc_FOUND AND Blosc_VERSION VERSION_GREATER MINIMUM_BLOSC_VERSION) + message(WARNING "The version of Blosc located is greater than ${MINIMUM_BLOSC_VERSION}. " + "There have been reported issues with using later versions of Blosc with OpenVDB. " + "OpenVDB has been tested fully against Blosc ${MINIMUM_BLOSC_VERSION}, it is " + "recommended that you use this version where possible." + ) + endif() +else() + message(WARNING "Blosc support is disabled. It is strongly recommended to " + "enable blosc for optimal builds of OpenVDB and to support compatible " + "serialization of other OpenVDB installations." + ) +endif() + +if(OPENVDB_CORE_SHARED) + # @note Both of these must be set for Boost 1.70 (VFX2020) to link against + # boost shared libraries (more specifically libraries built with -fPIC). + # http://boost.2283326.n4.nabble.com/CMake-config-scripts-broken-in-1-70-td4708957.html + # https://github.com/boostorg/boost_install/commit/160c7cb2b2c720e74463865ef0454d4c4cd9ae7c + set(BUILD_SHARED_LIBS ON) + set(Boost_USE_STATIC_LIBS OFF) +endif() + +find_package(Boost ${MINIMUM_BOOST_VERSION} REQUIRED COMPONENTS iostreams system) + +if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_BOOST_VERSION) + if(${Boost_LIB_VERSION} VERSION_LESS FUTURE_MINIMUM_BOOST_VERSION) + message(DEPRECATION "Support for Boost versions < ${FUTURE_MINIMUM_BOOST_VERSION} " + "is deprecated and will be removed.") + endif() +endif() + +if(UNIX) + find_package(Threads REQUIRED) +endif() + +if(CONCURRENT_MALLOC STREQUAL "Jemalloc") + find_package(Jemalloc) + if(NOT TARGET Jemalloc::jemalloc) + message(WARNING "Unable to find Jemalloc, attempting to fall back to TBB malloc. + It is recommended to use Jemalloc for optimum performance." + ) + find_package(TBB ${MINIMUM_TBB_VERSION} REQUIRED COMPONENTS tbbmalloc tbbmalloc_proxy) + endif() +elseif(CONCURRENT_MALLOC STREQUAL "Tbbmalloc") + find_package(TBB ${MINIMUM_TBB_VERSION} REQUIRED COMPONENTS tbbmalloc tbbmalloc_proxy) +endif() + +# Set deps. Note that the order here is important. If we're building against +# Houdini 17.5 we must include OpenEXR and IlmBase deps first to ensure the +# users chosen namespaced headers are correctly prioritized. Otherwise other +# include paths from shared installs (including houdini) may pull in the wrong +# headers + +set(OPENVDB_CORE_DEPENDENT_LIBS + Boost::iostreams + Boost::system + IlmBase::Half +) + +if(USE_EXR) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS + IlmBase::IlmThread + IlmBase::Iex + IlmBase::Imath + OpenEXR::IlmImf + ) +endif() + +if(USE_LOG4CPLUS) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS Log4cplus::log4cplus) +endif() + +# @todo blosc and zlib should be hidden (privately linked in): +# See FindOpenVDB.cmake + +if(USE_BLOSC) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS Blosc::blosc) +endif() + +list(APPEND OPENVDB_CORE_DEPENDENT_LIBS + TBB::tbb + ZLIB::ZLIB +) + +if(UNIX) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS Threads::Threads) +endif() + +if(TARGET Jemalloc::jemalloc) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS Jemalloc::jemalloc) +endif() + +if(TARGET TBB::tbbmalloc AND TARGET TBB::tbbmalloc_proxy) + list(APPEND OPENVDB_CORE_DEPENDENT_LIBS + TBB::tbbmalloc + TBB::tbbmalloc_proxy + ) +endif() + +########################################################################## + +if(WIN32) + # Because of implicit linking! + link_directories(${Boost_LIBRARY_DIR}) + if(OPENVDB_DISABLE_BOOST_IMPLICIT_LINKING) + add_definitions(-DBOOST_ALL_NO_LIB) + endif() +endif() + +# @todo Should be target definitions +if(WIN32) + add_definitions(-D_WIN32 -DNOMINMAX -DOPENVDB_DLL) +endif() + +##### Core library configuration + +set(OPENVDB_LIBRARY_SOURCE_FILES + Grid.cc + io/Archive.cc + io/Compression.cc + io/DelayedLoadMetadata.cc + io/File.cc + io/GridDescriptor.cc + io/Queue.cc + io/Stream.cc + io/TempFile.cc + math/Maps.cc + math/Proximity.cc + math/QuantizedUnitVec.cc + math/Transform.cc + Metadata.cc + MetaMap.cc + openvdb.cc + Platform.cc + points/AttributeArray.cc + points/AttributeArrayString.cc + points/AttributeGroup.cc + points/AttributeSet.cc + points/StreamCompression.cc + points/points.cc + util/Formats.cc + util/Util.cc +) + +set(OPENVDB_LIBRARY_INCLUDE_FILES + Exceptions.h + Grid.h + Metadata.h + MetaMap.h + openvdb.h + Platform.h + PlatformConfig.h + Types.h + version.h +) + +set(OPENVDB_LIBRARY_IO_INCLUDE_FILES + io/Archive.h + io/Compression.h + io/DelayedLoadMetadata.h + io/File.h + io/GridDescriptor.h + io/io.h + io/Queue.h + io/Stream.h + io/TempFile.h +) + +set(OPENVDB_LIBRARY_MATH_INCLUDE_FILES + math/BBox.h + math/ConjGradient.h + math/Coord.h + math/DDA.h + math/FiniteDifference.h + math/LegacyFrustum.h + math/Maps.h + math/Mat.h + math/Mat3.h + math/Mat4.h + math/Math.h + math/Operators.h + math/Proximity.h + math/QuantizedUnitVec.h + math/Quat.h + math/Ray.h + math/Stats.h + math/Stencils.h + math/Transform.h + math/Tuple.h + math/Vec2.h + math/Vec3.h + math/Vec4.h +) + +set(OPENVDB_LIBRARY_POINTS_INCLUDE_FILES + points/AttributeArray.h + points/AttributeArrayString.h + points/AttributeGroup.h + points/AttributeSet.h + points/IndexFilter.h + points/IndexIterator.h + points/PointAdvect.h + points/PointAttribute.h + points/PointConversion.h + points/PointCount.h + points/PointDataGrid.h + points/PointDelete.h + points/PointGroup.h + points/PointMask.h + points/PointMove.h + points/PointSample.h + points/PointScatter.h + points/StreamCompression.h +) + +set(OPENVDB_LIBRARY_TOOLS_INCLUDE_FILES + tools/ChangeBackground.h + tools/Clip.h + tools/Composite.h + tools/Dense.h + tools/DenseSparseTools.h + tools/Diagnostics.h + tools/Filter.h + tools/FindActiveValues.h + tools/GridOperators.h + tools/GridTransformer.h + tools/Interpolation.h + tools/LevelSetAdvect.h + tools/LevelSetFilter.h + tools/LevelSetFracture.h + tools/LevelSetMeasure.h + tools/LevelSetMorph.h + tools/LevelSetPlatonic.h + tools/LevelSetRebuild.h + tools/LevelSetSphere.h + tools/LevelSetTracker.h + tools/LevelSetUtil.h + tools/Mask.h + tools/MeshToVolume.h + tools/Morphology.h + tools/MultiResGrid.h + tools/ParticleAtlas.h + tools/ParticlesToLevelSet.h + tools/PointAdvect.h + tools/PointIndexGrid.h + tools/PointPartitioner.h + tools/PointScatter.h + tools/PointsToMask.h + tools/PoissonSolver.h + tools/PotentialFlow.h + tools/Prune.h + tools/RayIntersector.h + tools/RayTracer.h + tools/SignedFloodFill.h + tools/Statistics.h + tools/TopologyToLevelSet.h + tools/ValueTransformer.h + tools/VectorTransformer.h + tools/VelocityFields.h + tools/VolumeAdvect.h + tools/VolumeToMesh.h + tools/VolumeToSpheres.h +) + +set(OPENVDB_LIBRARY_TREE_INCLUDE_FILES + tree/InternalNode.h + tree/Iterator.h + tree/LeafBuffer.h + tree/LeafManager.h + tree/LeafNode.h + tree/LeafNodeBool.h + tree/LeafNodeMask.h + tree/NodeManager.h + tree/NodeUnion.h + tree/RootNode.h + tree/Tree.h + tree/TreeIterator.h + tree/ValueAccessor.h +) + +set(OPENVDB_LIBRARY_UTIL_INCLUDE_FILES + util/CpuTimer.h + util/Formats.h + util/logging.h + util/MapsUtil.h + util/Name.h + util/NodeMasks.h + util/NullInterrupter.h + util/PagedArray.h + util/Util.h +) + +# @todo CMake >= 3.12, use an object library to consolidate shared/static +# builds. There are limitations with earlier versions of CMake when used with +# imported targets. + +if(OPENVDB_CORE_SHARED) + add_library(openvdb_shared SHARED ${OPENVDB_LIBRARY_SOURCE_FILES}) +endif() + +if(OPENVDB_CORE_STATIC) + add_library(openvdb_static STATIC ${OPENVDB_LIBRARY_SOURCE_FILES}) +endif() + +# Alias either the shared or static library to the generic OpenVDB +# target. Dependent components should use this target to build against +# such that they are always able to find a valid build of OpenVDB + +if(OPENVDB_CORE_SHARED) + add_library(openvdb ALIAS openvdb_shared) +else() + add_library(openvdb ALIAS openvdb_static) +endif() + + +########################################################################## + +# Configure c flags + +set(OPENVDB_CORE_PRIVATE_DEFINES) +set(OPENVDB_CORE_PUBLIC_DEFINES) + +# Private defines (not inherited by dependent projects) + +list(APPEND OPENVDB_CORE_PRIVATE_DEFINES "-DOPENVDB_PRIVATE") +if(USE_BLOSC) + list(APPEND OPENVDB_CORE_PRIVATE_DEFINES "-DOPENVDB_USE_BLOSC") +endif() + +# Public defines + +if(USE_EXR) + list(APPEND OPENVDB_CORE_PUBLIC_DEFINES "-DOPENVDB_TOOLS_RAYTRACER_USE_EXR") +endif() +if(USE_LOG4CPLUS) + list(APPEND OPENVDB_CORE_PUBLIC_DEFINES "-DOPENVDB_USE_LOG4CPLUS") +endif() + +########################################################################## + +# Configure static build + +if(OPENVDB_CORE_STATIC) + target_include_directories(openvdb_static + PUBLIC ../ + PRIVATE . + ) + + target_compile_definitions(openvdb_static PRIVATE ${OPENVDB_CORE_PRIVATE_DEFINES}) + target_compile_definitions(openvdb_static PUBLIC ${OPENVDB_CORE_PUBLIC_DEFINES}) + + set_target_properties(openvdb_static + PROPERTIES OUTPUT_NAME ${OPENVDB_STATIC_LIBRARY_NAME} + ) + + if(WIN32) + set_target_properties(openvdb_static + PROPERTIES PREFIX "lib" + ) + endif() + + target_link_libraries(openvdb_static + ${OPENVDB_CORE_DEPENDENT_LIBS} + ) +endif() + +# Configure shared build + +if(OPENVDB_CORE_SHARED) + target_include_directories(openvdb_shared + PUBLIC ../ + PRIVATE . + ) + + target_compile_definitions(openvdb_shared PRIVATE ${OPENVDB_CORE_PRIVATE_DEFINES}) + target_compile_definitions(openvdb_shared PUBLIC ${OPENVDB_CORE_PUBLIC_DEFINES}) + + set_target_properties(openvdb_shared + PROPERTIES + OUTPUT_NAME ${OPENVDB_SHARED_LIBRARY_NAME} + SOVERSION ${OpenVDB_MAJOR_VERSION}.${OpenVDB_MINOR_VERSION} + VERSION ${OpenVDB_MAJOR_VERSION}.${OpenVDB_MINOR_VERSION}.${OpenVDB_PATCH_VERSION} + ) + + target_link_libraries(openvdb_shared + ${OPENVDB_CORE_DEPENDENT_LIBS} + ) + + if(OPENVDB_ENABLE_RPATH) + # @todo There is probably a better way to do this for imported targets + list(APPEND RPATHS + ${Boost_LIBRARY_DIRS} + ${IlmBase_LIBRARY_DIRS} + ${OpenEXR_LIBRARY_DIRS} + ${Log4cplus_LIBRARY_DIRS} + ${Blosc_LIBRARY_DIRS} + ${Tbb_LIBRARY_DIRS} + ) + list(REMOVE_DUPLICATES RPATHS) + set_target_properties(openvdb_shared + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) + endif() +endif() + +unset(OPENVDB_CORE_PRIVATE_DEFINES) +unset(OPENVDB_CORE_PUBLIC_DEFINES) + +########################################################################## + +# Installation + +if(OPENVDB_CORE_STATIC) + install(TARGETS + openvdb_static + DESTINATION + ${CMAKE_INSTALL_LIBDIR} + ) +endif() + +if(OPENVDB_CORE_SHARED) + if(WIN32) + install(TARGETS + openvdb_shared + RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT Runtime + ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT Runtime + ) + else() + install(TARGETS + openvdb_shared + DESTINATION + ${CMAKE_INSTALL_LIBDIR} + ) + endif() +endif() + +install(FILES ${OPENVDB_LIBRARY_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}) +install(FILES ${OPENVDB_LIBRARY_IO_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/io) +install(FILES ${OPENVDB_LIBRARY_MATH_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/math) +install(FILES ${OPENVDB_LIBRARY_POINTS_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/points) +install(FILES ${OPENVDB_LIBRARY_TOOLS_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/tools) +install(FILES ${OPENVDB_LIBRARY_TREE_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/tree) +install(FILES ${OPENVDB_LIBRARY_UTIL_INCLUDE_FILES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/util) diff --git a/openvdb/COPYRIGHT b/openvdb/COPYRIGHT new file mode 100644 index 00000000..4f8f1897 --- /dev/null +++ b/openvdb/COPYRIGHT @@ -0,0 +1,2 @@ +Copyright Contributors to the OpenVDB Project +SPDX-License-Identifier: MPL-2.0 \ No newline at end of file diff --git a/openvdb/Exceptions.h b/openvdb/Exceptions.h new file mode 100644 index 00000000..68e4e593 --- /dev/null +++ b/openvdb/Exceptions.h @@ -0,0 +1,93 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED +#define OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +class OPENVDB_API Exception: public std::exception +{ +public: + Exception(const Exception&) = default; + Exception(Exception&&) = default; + Exception& operator=(const Exception&) = default; + Exception& operator=(Exception&&) = default; + ~Exception() override = default; + + const char* what() const noexcept override + { + try { return mMessage.c_str(); } catch (...) {} + return nullptr; + } + +protected: + Exception() noexcept {} + explicit Exception(const char* eType, const std::string* const msg = nullptr) noexcept + { + try { + if (eType) mMessage = eType; + if (msg) mMessage += ": " + (*msg); + } catch (...) {} + } + +private: + std::string mMessage; +}; + + +#define OPENVDB_EXCEPTION(_classname) \ +class OPENVDB_API _classname: public Exception \ +{ \ +public: \ + _classname() noexcept: Exception( #_classname ) {} \ + explicit _classname(const std::string& msg) noexcept: Exception( #_classname , &msg) {} \ +} + + +OPENVDB_EXCEPTION(ArithmeticError); +OPENVDB_EXCEPTION(IndexError); +OPENVDB_EXCEPTION(IoError); +OPENVDB_EXCEPTION(KeyError); +OPENVDB_EXCEPTION(LookupError); +OPENVDB_EXCEPTION(NotImplementedError); +OPENVDB_EXCEPTION(ReferenceError); +OPENVDB_EXCEPTION(RuntimeError); +OPENVDB_EXCEPTION(TypeError); +OPENVDB_EXCEPTION(ValueError); + +#undef OPENVDB_EXCEPTION + + +/// @deprecated Use ValueError instead. +class OPENVDB_API IllegalValueException: public Exception { +public: + OPENVDB_DEPRECATED IllegalValueException() noexcept: Exception("IllegalValueException") {} + OPENVDB_DEPRECATED explicit IllegalValueException(const std::string& msg) noexcept: + Exception("IllegalValueException", &msg) {} +}; + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#define OPENVDB_THROW(exception, message) \ +{ \ + std::string _openvdb_throw_msg; \ + try { \ + std::ostringstream _openvdb_throw_os; \ + _openvdb_throw_os << message; \ + _openvdb_throw_msg = _openvdb_throw_os.str(); \ + } catch (...) {} \ + throw exception(_openvdb_throw_msg); \ +} // OPENVDB_THROW + +#endif // OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED diff --git a/openvdb/Grid.cc b/openvdb/Grid.cc new file mode 100644 index 00000000..45374efe --- /dev/null +++ b/openvdb/Grid.cc @@ -0,0 +1,433 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Grid.h" + +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// @note For Houdini compatibility, boolean-valued metadata names +/// should begin with "is_". +const char + * const GridBase::META_GRID_CLASS = "class", + * const GridBase::META_GRID_CREATOR = "creator", + * const GridBase::META_GRID_NAME = "name", + * const GridBase::META_SAVE_HALF_FLOAT = "is_saved_as_half_float", + * const GridBase::META_IS_LOCAL_SPACE = "is_local_space", + * const GridBase::META_VECTOR_TYPE = "vector_type", + * const GridBase::META_FILE_BBOX_MIN = "file_bbox_min", + * const GridBase::META_FILE_BBOX_MAX = "file_bbox_max", + * const GridBase::META_FILE_COMPRESSION = "file_compression", + * const GridBase::META_FILE_MEM_BYTES = "file_mem_bytes", + * const GridBase::META_FILE_VOXEL_COUNT = "file_voxel_count", + * const GridBase::META_FILE_DELAYED_LOAD = "file_delayed_load"; + + +//////////////////////////////////////// + + +namespace { + +using GridFactoryMap = std::map; +using GridFactoryMapCIter = GridFactoryMap::const_iterator; + +using Mutex = tbb::mutex; +using Lock = Mutex::scoped_lock; + +struct LockedGridRegistry { + LockedGridRegistry() {} + Mutex mMutex; + GridFactoryMap mMap; +}; + + +// Global function for accessing the registry +LockedGridRegistry* +getGridRegistry() +{ + static LockedGridRegistry registry; + return ®istry; +} + +} // unnamed namespace + + +bool +GridBase::isRegistered(const Name& name) +{ + LockedGridRegistry* registry = getGridRegistry(); + Lock lock(registry->mMutex); + + return (registry->mMap.find(name) != registry->mMap.end()); +} + + +void +GridBase::registerGrid(const Name& name, GridFactory factory) +{ + LockedGridRegistry* registry = getGridRegistry(); + Lock lock(registry->mMutex); + + if (registry->mMap.find(name) != registry->mMap.end()) { + OPENVDB_THROW(KeyError, "Grid type " << name << " is already registered"); + } + + registry->mMap[name] = factory; +} + + +void +GridBase::unregisterGrid(const Name& name) +{ + LockedGridRegistry* registry = getGridRegistry(); + Lock lock(registry->mMutex); + + registry->mMap.erase(name); +} + + +GridBase::Ptr +GridBase::createGrid(const Name& name) +{ + LockedGridRegistry* registry = getGridRegistry(); + Lock lock(registry->mMutex); + + GridFactoryMapCIter iter = registry->mMap.find(name); + + if (iter == registry->mMap.end()) { + OPENVDB_THROW(LookupError, "Cannot create grid of unregistered type " << name); + } + + return (iter->second)(); +} + + +void +GridBase::clearRegistry() +{ + LockedGridRegistry* registry = getGridRegistry(); + Lock lock(registry->mMutex); + + registry->mMap.clear(); +} + + +//////////////////////////////////////// + + +GridClass +GridBase::stringToGridClass(const std::string& s) +{ + GridClass ret = GRID_UNKNOWN; + std::string str = s; + boost::trim(str); + boost::to_lower(str); + if (str == gridClassToString(GRID_LEVEL_SET)) { + ret = GRID_LEVEL_SET; + } else if (str == gridClassToString(GRID_FOG_VOLUME)) { + ret = GRID_FOG_VOLUME; + } else if (str == gridClassToString(GRID_STAGGERED)) { + ret = GRID_STAGGERED; + } + return ret; +} + + +std::string +GridBase::gridClassToString(GridClass cls) +{ + std::string ret; + switch (cls) { + case GRID_UNKNOWN: ret = "unknown"; break; + case GRID_LEVEL_SET: ret = "level set"; break; + case GRID_FOG_VOLUME: ret = "fog volume"; break; + case GRID_STAGGERED: ret = "staggered"; break; + } + return ret; +} + +std::string +GridBase::gridClassToMenuName(GridClass cls) +{ + std::string ret; + switch (cls) { + case GRID_UNKNOWN: ret = "Other"; break; + case GRID_LEVEL_SET: ret = "Level Set"; break; + case GRID_FOG_VOLUME: ret = "Fog Volume"; break; + case GRID_STAGGERED: ret = "Staggered Vector Field"; break; + } + return ret; +} + + + +GridClass +GridBase::getGridClass() const +{ + GridClass cls = GRID_UNKNOWN; + if (StringMetadata::ConstPtr s = this->getMetadata(META_GRID_CLASS)) { + cls = stringToGridClass(s->value()); + } + return cls; +} + + +void +GridBase::setGridClass(GridClass cls) +{ + this->insertMeta(META_GRID_CLASS, StringMetadata(gridClassToString(cls))); +} + + +void +GridBase::clearGridClass() +{ + this->removeMeta(META_GRID_CLASS); +} + + +//////////////////////////////////////// + + +VecType +GridBase::stringToVecType(const std::string& s) +{ + VecType ret = VEC_INVARIANT; + std::string str = s; + boost::trim(str); + boost::to_lower(str); + if (str == vecTypeToString(VEC_COVARIANT)) { + ret = VEC_COVARIANT; + } else if (str == vecTypeToString(VEC_COVARIANT_NORMALIZE)) { + ret = VEC_COVARIANT_NORMALIZE; + } else if (str == vecTypeToString(VEC_CONTRAVARIANT_RELATIVE)) { + ret = VEC_CONTRAVARIANT_RELATIVE; + } else if (str == vecTypeToString(VEC_CONTRAVARIANT_ABSOLUTE)) { + ret = VEC_CONTRAVARIANT_ABSOLUTE; + } + return ret; +} + + +std::string +GridBase::vecTypeToString(VecType typ) +{ + std::string ret; + switch (typ) { + case VEC_INVARIANT: ret = "invariant"; break; + case VEC_COVARIANT: ret = "covariant"; break; + case VEC_COVARIANT_NORMALIZE: ret = "covariant normalize"; break; + case VEC_CONTRAVARIANT_RELATIVE: ret = "contravariant relative"; break; + case VEC_CONTRAVARIANT_ABSOLUTE: ret = "contravariant absolute"; break; + } + return ret; +} + + +std::string +GridBase::vecTypeExamples(VecType typ) +{ + std::string ret; + switch (typ) { + case VEC_INVARIANT: ret = "Tuple/Color/UVW"; break; + case VEC_COVARIANT: ret = "Gradient/Normal"; break; + case VEC_COVARIANT_NORMALIZE: ret = "Unit Normal"; break; + case VEC_CONTRAVARIANT_RELATIVE: ret = "Displacement/Velocity/Acceleration"; break; + case VEC_CONTRAVARIANT_ABSOLUTE: ret = "Position"; break; + } + return ret; +} + + +std::string +GridBase::vecTypeDescription(VecType typ) +{ + std::string ret; + switch (typ) { + case VEC_INVARIANT: + ret = "Does not transform"; + break; + case VEC_COVARIANT: + ret = "Apply the inverse-transpose transform matrix but ignore translation"; + break; + case VEC_COVARIANT_NORMALIZE: + ret = "Apply the inverse-transpose transform matrix but ignore translation" + " and renormalize vectors"; + break; + case VEC_CONTRAVARIANT_RELATIVE: + ret = "Apply the forward transform matrix but ignore translation"; + break; + case VEC_CONTRAVARIANT_ABSOLUTE: + ret = "Apply the forward transform matrix, including translation"; + break; + } + return ret; +} + + +VecType +GridBase::getVectorType() const +{ + VecType typ = VEC_INVARIANT; + if (StringMetadata::ConstPtr s = this->getMetadata(META_VECTOR_TYPE)) { + typ = stringToVecType(s->value()); + } + return typ; +} + + +void +GridBase::setVectorType(VecType typ) +{ + this->insertMeta(META_VECTOR_TYPE, StringMetadata(vecTypeToString(typ))); +} + + +void +GridBase::clearVectorType() +{ + this->removeMeta(META_VECTOR_TYPE); +} + + +//////////////////////////////////////// + + +std::string +GridBase::getName() const +{ + if (Metadata::ConstPtr meta = (*this)[META_GRID_NAME]) return meta->str(); + return ""; +} + + +void +GridBase::setName(const std::string& name) +{ + this->removeMeta(META_GRID_NAME); + this->insertMeta(META_GRID_NAME, StringMetadata(name)); +} + + +//////////////////////////////////////// + + +std::string +GridBase::getCreator() const +{ + if (Metadata::ConstPtr meta = (*this)[META_GRID_CREATOR]) return meta->str(); + return ""; +} + + +void +GridBase::setCreator(const std::string& creator) +{ + this->removeMeta(META_GRID_CREATOR); + this->insertMeta(META_GRID_CREATOR, StringMetadata(creator)); +} + + +//////////////////////////////////////// + + +bool +GridBase::saveFloatAsHalf() const +{ + if (Metadata::ConstPtr meta = (*this)[META_SAVE_HALF_FLOAT]) { + return meta->asBool(); + } + return false; +} + + +void +GridBase::setSaveFloatAsHalf(bool saveAsHalf) +{ + this->removeMeta(META_SAVE_HALF_FLOAT); + this->insertMeta(META_SAVE_HALF_FLOAT, BoolMetadata(saveAsHalf)); +} + + +//////////////////////////////////////// + + +bool +GridBase::isInWorldSpace() const +{ + bool local = false; + if (Metadata::ConstPtr meta = (*this)[META_IS_LOCAL_SPACE]) { + local = meta->asBool(); + } + return !local; +} + + +void +GridBase::setIsInWorldSpace(bool world) +{ + this->removeMeta(META_IS_LOCAL_SPACE); + this->insertMeta(META_IS_LOCAL_SPACE, BoolMetadata(!world)); +} + + +//////////////////////////////////////// + + +void +GridBase::addStatsMetadata() +{ + const CoordBBox bbox = this->evalActiveVoxelBoundingBox(); + this->removeMeta(META_FILE_BBOX_MIN); + this->removeMeta(META_FILE_BBOX_MAX); + this->removeMeta(META_FILE_MEM_BYTES); + this->removeMeta(META_FILE_VOXEL_COUNT); + this->insertMeta(META_FILE_BBOX_MIN, Vec3IMetadata(bbox.min().asVec3i())); + this->insertMeta(META_FILE_BBOX_MAX, Vec3IMetadata(bbox.max().asVec3i())); + this->insertMeta(META_FILE_MEM_BYTES, Int64Metadata(this->memUsage())); + this->insertMeta(META_FILE_VOXEL_COUNT, Int64Metadata(this->activeVoxelCount())); +} + + +MetaMap::Ptr +GridBase::getStatsMetadata() const +{ + const char* const fields[] = { + META_FILE_BBOX_MIN, + META_FILE_BBOX_MAX, + META_FILE_MEM_BYTES, + META_FILE_VOXEL_COUNT, + nullptr + }; + + /// @todo Check that the fields are of the correct type? + MetaMap::Ptr ret(new MetaMap); + for (int i = 0; fields[i] != nullptr; ++i) { + if (Metadata::ConstPtr m = (*this)[fields[i]]) { + ret->insertMeta(fields[i], *m); + } + } + return ret; +} + + +//////////////////////////////////////// + + +void +GridBase::clipGrid(const BBoxd& worldBBox) +{ + const CoordBBox indexBBox = + this->constTransform().worldToIndexNodeCentered(worldBBox); + this->clip(indexBBox); +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/Grid.h b/openvdb/Grid.h new file mode 100644 index 00000000..87d7fbe8 --- /dev/null +++ b/openvdb/Grid.h @@ -0,0 +1,1827 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_GRID_HAS_BEEN_INCLUDED +#define OPENVDB_GRID_HAS_BEEN_INCLUDED + +#include "Exceptions.h" +#include "MetaMap.h" +#include "Types.h" +#include "io/io.h" +#include "math/Transform.h" +#include "tree/Tree.h" +#include "util/logging.h" +#include "util/Name.h" +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +using TreeBase = tree::TreeBase; + +template class Grid; // forward declaration + + +/// @brief Create a new grid of type @c GridType with a given background value. +/// +/// @note Calling createGrid(background) is equivalent to calling +/// GridType::create(background). +template +inline typename GridType::Ptr createGrid(const typename GridType::ValueType& background); + + +/// @brief Create a new grid of type @c GridType with background value zero. +/// +/// @note Calling createGrid() is equivalent to calling GridType::create(). +template +inline typename GridType::Ptr createGrid(); + + +/// @brief Create a new grid of the appropriate type that wraps the given tree. +/// +/// @note This function can be called without specifying the template argument, +/// i.e., as createGrid(tree). +template +inline typename Grid::Ptr createGrid(TreePtrType); + + +/// @brief Create a new grid of type @c GridType classified as a "Level Set", +/// i.e., a narrow-band level set. +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +/// +/// @param voxelSize the size of a voxel in world units +/// @param halfWidth the half width of the narrow band in voxel units +/// +/// @details The voxel size and the narrow band half width define the grid's +/// background value as halfWidth*voxelWidth. The transform is linear +/// with a uniform scaling only corresponding to the specified voxel size. +/// +/// @note It is generally advisable to specify a half-width of the narrow band +/// that is larger than one voxel unit, otherwise zero crossings are not guaranteed. +template +typename GridType::Ptr createLevelSet( + Real voxelSize = 1.0, Real halfWidth = LEVEL_SET_HALF_WIDTH); + + +//////////////////////////////////////// + + +/// @brief Abstract base class for typed grids +class OPENVDB_API GridBase: public MetaMap +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using GridFactory = Ptr (*)(); + + + ~GridBase() override {} + + + /// @name Copying + /// @{ + + /// @brief Return a new grid of the same type as this grid whose metadata is a + /// deep copy of this grid's and whose tree and transform are shared with this grid. + virtual GridBase::Ptr copyGrid() = 0; + /// @brief Return a new grid of the same type as this grid whose metadata is a + /// deep copy of this grid's and whose tree and transform are shared with this grid. + virtual GridBase::ConstPtr copyGrid() const = 0; + /// @brief Return a new grid of the same type as this grid whose metadata and + /// transform are deep copies of this grid's and whose tree is default-constructed. + virtual GridBase::Ptr copyGridWithNewTree() const = 0; + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// @brief Return a new grid of the same type as this grid whose tree and transform + /// is shared with this grid and whose metadata is provided as an argument. + virtual GridBase::ConstPtr copyGridReplacingMetadata(const MetaMap& meta) const = 0; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid, whose metadata is a deep copy of this grid's and whose transform is + /// provided as an argument. + /// @throw ValueError if the transform pointer is null + virtual GridBase::ConstPtr copyGridReplacingTransform(math::Transform::Ptr xform) const = 0; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid and whose transform and metadata are provided as arguments. + /// @throw ValueError if the transform pointer is null + virtual GridBase::ConstPtr copyGridReplacingMetadataAndTransform(const MetaMap& meta, + math::Transform::Ptr xform) const = 0; +#endif + + /// Return a new grid whose metadata, transform and tree are deep copies of this grid's. + virtual GridBase::Ptr deepCopyGrid() const = 0; + + /// @} + + + /// @name Registry + /// @{ + + /// Create a new grid of the given (registered) type. + static Ptr createGrid(const Name& type); + + /// Return @c true if the given grid type name is registered. + static bool isRegistered(const Name &type); + + /// Clear the grid type registry. + static void clearRegistry(); + + /// @} + + /// @name Type access + /// @{ + + /// Return the name of this grid's type. + virtual Name type() const = 0; + /// Return the name of the type of a voxel's value (e.g., "float" or "vec3d"). + virtual Name valueType() const = 0; + + /// Return @c true if this grid is of the same type as the template parameter. + template + bool isType() const { return (this->type() == GridType::gridType()); } + + /// @} + + //@{ + /// @brief Return the result of downcasting a GridBase pointer to a Grid pointer + /// of the specified type, or return a null pointer if the types are incompatible. + template + static typename GridType::Ptr grid(const GridBase::Ptr&); + template + static typename GridType::ConstPtr grid(const GridBase::ConstPtr&); + template + static typename GridType::ConstPtr constGrid(const GridBase::Ptr&); + template + static typename GridType::ConstPtr constGrid(const GridBase::ConstPtr&); + //@} + + /// @name Tree + /// @{ + + /// @brief Return a pointer to this grid's tree, which might be + /// shared with other grids. The pointer is guaranteed to be non-null. + TreeBase::Ptr baseTreePtr(); + /// @brief Return a pointer to this grid's tree, which might be + /// shared with other grids. The pointer is guaranteed to be non-null. + TreeBase::ConstPtr baseTreePtr() const { return this->constBaseTreePtr(); } + /// @brief Return a pointer to this grid's tree, which might be + /// shared with other grids. The pointer is guaranteed to be non-null. + virtual TreeBase::ConstPtr constBaseTreePtr() const = 0; + + /// @brief Return a reference to this grid's tree, which might be + /// shared with other grids. + /// @note Calling @vdblink::GridBase::setTree() setTree@endlink + /// on this grid invalidates all references previously returned by this method. + TreeBase& baseTree() { return const_cast(this->constBaseTree()); } + /// @brief Return a reference to this grid's tree, which might be + /// shared with other grids. + /// @note Calling @vdblink::GridBase::setTree() setTree@endlink + /// on this grid invalidates all references previously returned by this method. + const TreeBase& baseTree() const { return this->constBaseTree(); } + /// @brief Return a reference to this grid's tree, which might be + /// shared with other grids. + /// @note Calling @vdblink::GridBase::setTree() setTree@endlink + /// on this grid invalidates all references previously returned by this method. + const TreeBase& constBaseTree() const { return *(this->constBaseTreePtr()); } + + /// @brief Associate the given tree with this grid, in place of its existing tree. + /// @throw ValueError if the tree pointer is null + /// @throw TypeError if the tree is not of the appropriate type + /// @note Invalidates all references previously returned by + /// @vdblink::GridBase::baseTree() baseTree@endlink + /// or @vdblink::GridBase::constBaseTree() constBaseTree@endlink. + virtual void setTree(TreeBase::Ptr) = 0; + + /// Set a new tree with the same background value as the previous tree. + virtual void newTree() = 0; + + /// @} + + /// Return @c true if this grid contains only background voxels. + virtual bool empty() const = 0; + /// Empty this grid, setting all voxels to the background. + virtual void clear() = 0; + + + /// @name Tools + /// @{ + + /// @brief Reduce the memory footprint of this grid by increasing its sparseness + /// either losslessly (@a tolerance = 0) or lossily (@a tolerance > 0). + /// @details With @a tolerance > 0, sparsify regions where voxels have the same + /// active state and have values that differ by no more than the tolerance + /// (converted to this grid's value type). + virtual void pruneGrid(float tolerance = 0.0) = 0; + + /// @brief Clip this grid to the given world-space bounding box. + /// @details Voxels that lie outside the bounding box are set to the background. + /// @warning Clipping a level set will likely produce a grid that is + /// no longer a valid level set. + void clipGrid(const BBoxd&); + + /// @brief Clip this grid to the given index-space bounding box. + /// @details Voxels that lie outside the bounding box are set to the background. + /// @warning Clipping a level set will likely produce a grid that is + /// no longer a valid level set. + virtual void clip(const CoordBBox&) = 0; + + /// @} + + /// @{ + /// @brief If this grid resolves to one of the listed grid types, + /// invoke the given functor on the resolved grid. + /// @return @c false if this grid's type is not one of the listed types + /// + /// @par Example: + /// @code + /// using AllowedGridTypes = openvdb::TypeList< + /// openvdb::Int32Grid, openvdb::Int64Grid, + /// openvdb::FloatGrid, openvdb::DoubleGrid>; + /// + /// const openvdb::CoordBBox bbox{ + /// openvdb::Coord{0,0,0}, openvdb::Coord{10,10,10}}; + /// + /// // Fill the grid if it is one of the allowed types. + /// myGridBasePtr->apply( + /// [&bbox](auto& grid) { // C++14 + /// using GridType = typename std::decay::type; + /// grid.fill(bbox, typename GridType::ValueType(1)); + /// } + /// ); + /// @endcode + /// + /// @see @vdblink::TypeList TypeList@endlink + template inline bool apply(OpT&) const; + template inline bool apply(OpT&); + template inline bool apply(const OpT&) const; + template inline bool apply(const OpT&); + /// @} + + /// @name Metadata + /// @{ + + /// Return this grid's user-specified name. + std::string getName() const; + /// Specify a name for this grid. + void setName(const std::string&); + + /// Return the user-specified description of this grid's creator. + std::string getCreator() const; + /// Provide a description of this grid's creator. + void setCreator(const std::string&); + + /// @brief Return @c true if this grid should be written out with floating-point + /// voxel values (including components of vectors) quantized to 16 bits. + bool saveFloatAsHalf() const; + void setSaveFloatAsHalf(bool); + + /// @brief Return the class of volumetric data (level set, fog volume, etc.) + /// that is stored in this grid. + /// @sa gridClassToString, gridClassToMenuName, stringToGridClass + GridClass getGridClass() const; + /// @brief Specify the class of volumetric data (level set, fog volume, etc.) + /// that is stored in this grid. + /// @sa gridClassToString, gridClassToMenuName, stringToGridClass + void setGridClass(GridClass); + /// Remove the setting specifying the class of this grid's volumetric data. + void clearGridClass(); + + /// @} + + /// Return the metadata string value for the given class of volumetric data. + static std::string gridClassToString(GridClass); + /// Return a formatted string version of the grid class. + static std::string gridClassToMenuName(GridClass); + /// @brief Return the class of volumetric data specified by the given string. + /// @details If the string is not one of the ones returned by + /// @vdblink::GridBase::gridClassToString() gridClassToString@endlink, + /// return @c GRID_UNKNOWN. + static GridClass stringToGridClass(const std::string&); + + /// @name Metadata + /// @{ + + /// @brief Return the type of vector data (invariant, covariant, etc.) stored + /// in this grid, assuming that this grid contains a vector-valued tree. + /// @sa vecTypeToString, vecTypeExamples, vecTypeDescription, stringToVecType + VecType getVectorType() const; + /// @brief Specify the type of vector data (invariant, covariant, etc.) stored + /// in this grid, assuming that this grid contains a vector-valued tree. + /// @sa vecTypeToString, vecTypeExamples, vecTypeDescription, stringToVecType + void setVectorType(VecType); + /// Remove the setting specifying the type of vector data stored in this grid. + void clearVectorType(); + + /// @} + + /// Return the metadata string value for the given type of vector data. + static std::string vecTypeToString(VecType); + /// Return a string listing examples of the given type of vector data + /// (e.g., "Gradient/Normal", given VEC_COVARIANT). + static std::string vecTypeExamples(VecType); + /// @brief Return a string describing how the given type of vector data is affected + /// by transformations (e.g., "Does not transform", given VEC_INVARIANT). + static std::string vecTypeDescription(VecType); + static VecType stringToVecType(const std::string&); + + /// @name Metadata + /// @{ + + /// Return @c true if this grid's voxel values are in world space and should be + /// affected by transformations, @c false if they are in local space and should + /// not be affected by transformations. + bool isInWorldSpace() const; + /// Specify whether this grid's voxel values are in world space or in local space. + void setIsInWorldSpace(bool); + + /// @} + + // Standard metadata field names + // (These fields should normally not be accessed directly, but rather + // via the accessor methods above, when available.) + // Note: Visual C++ requires these declarations to be separate statements. + static const char* const META_GRID_CLASS; + static const char* const META_GRID_CREATOR; + static const char* const META_GRID_NAME; + static const char* const META_SAVE_HALF_FLOAT; + static const char* const META_IS_LOCAL_SPACE; + static const char* const META_VECTOR_TYPE; + static const char* const META_FILE_BBOX_MIN; + static const char* const META_FILE_BBOX_MAX; + static const char* const META_FILE_COMPRESSION; + static const char* const META_FILE_MEM_BYTES; + static const char* const META_FILE_VOXEL_COUNT; + static const char* const META_FILE_DELAYED_LOAD; + + + /// @name Statistics + /// @{ + + /// Return the number of active voxels. + virtual Index64 activeVoxelCount() const = 0; + + /// Return the axis-aligned bounding box of all active voxels. If + /// the grid is empty a default bbox is returned. + virtual CoordBBox evalActiveVoxelBoundingBox() const = 0; + + /// Return the dimensions of the axis-aligned bounding box of all active voxels. + virtual Coord evalActiveVoxelDim() const = 0; + + /// Return the number of bytes of memory used by this grid. + virtual Index64 memUsage() const = 0; + + /// @brief Add metadata to this grid comprising the current values + /// of statistics like the active voxel count and bounding box. + /// @note This metadata is not automatically kept up-to-date with + /// changes to this grid. + void addStatsMetadata(); + /// @brief Return a new MetaMap containing just the metadata that + /// was added to this grid with @vdblink::GridBase::addStatsMetadata() + /// addStatsMetadata@endlink. + /// @details If @vdblink::GridBase::addStatsMetadata() addStatsMetadata@endlink + /// was never called on this grid, return an empty MetaMap. + MetaMap::Ptr getStatsMetadata() const; + + /// @} + + + /// @name Transform + /// @{ + + //@{ + /// @brief Return a pointer to this grid's transform, which might be + /// shared with other grids. + math::Transform::Ptr transformPtr() { return mTransform; } + math::Transform::ConstPtr transformPtr() const { return mTransform; } + math::Transform::ConstPtr constTransformPtr() const { return mTransform; } + //@} + //@{ + /// @brief Return a reference to this grid's transform, which might be + /// shared with other grids. + /// @note Calling @vdblink::GridBase::setTransform() setTransform@endlink + /// on this grid invalidates all references previously returned by this method. + math::Transform& transform() { return *mTransform; } + const math::Transform& transform() const { return *mTransform; } + const math::Transform& constTransform() const { return *mTransform; } + //@} + + /// @} + + /// @name Transform + /// @{ + + /// @brief Associate the given transform with this grid, in place of + /// its existing transform. + /// @throw ValueError if the transform pointer is null + /// @note Invalidates all references previously returned by + /// @vdblink::GridBase::transform() transform@endlink + /// or @vdblink::GridBase::constTransform() constTransform@endlink. + void setTransform(math::Transform::Ptr); + + /// Return the size of this grid's voxels. + Vec3d voxelSize() const { return transform().voxelSize(); } + /// @brief Return the size of this grid's voxel at position (x, y, z). + /// @note Frustum and perspective transforms have position-dependent voxel size. + Vec3d voxelSize(const Vec3d& xyz) const { return transform().voxelSize(xyz); } + /// Return true if the voxels in world space are uniformly sized cubes + bool hasUniformVoxels() const { return mTransform->hasUniformScale(); } + /// Apply this grid's transform to the given coordinates. + Vec3d indexToWorld(const Vec3d& xyz) const { return transform().indexToWorld(xyz); } + /// Apply this grid's transform to the given coordinates. + Vec3d indexToWorld(const Coord& ijk) const { return transform().indexToWorld(ijk); } + /// Apply the inverse of this grid's transform to the given coordinates. + Vec3d worldToIndex(const Vec3d& xyz) const { return transform().worldToIndex(xyz); } + + /// @} + + + /// @name I/O + /// @{ + + /// @brief Read the grid topology from a stream. + /// This will read only the grid structure, not the actual data buffers. + virtual void readTopology(std::istream&) = 0; + /// @brief Write the grid topology to a stream. + /// This will write only the grid structure, not the actual data buffers. + virtual void writeTopology(std::ostream&) const = 0; + + /// Read all data buffers for this grid. + virtual void readBuffers(std::istream&) = 0; + /// Read all of this grid's data buffers that intersect the given index-space bounding box. + virtual void readBuffers(std::istream&, const CoordBBox&) = 0; + /// @brief Read all of this grid's data buffers that are not yet resident in memory + /// (because delayed loading is in effect). + /// @details If this grid was read from a memory-mapped file, this operation + /// disconnects the grid from the file. + /// @sa io::File::open, io::MappedFile + virtual void readNonresidentBuffers() const = 0; + /// Write out all data buffers for this grid. + virtual void writeBuffers(std::ostream&) const = 0; + + /// Read in the transform for this grid. + void readTransform(std::istream& is) { transform().read(is); } + /// Write out the transform for this grid. + void writeTransform(std::ostream& os) const { transform().write(os); } + + /// Output a human-readable description of this grid. + virtual void print(std::ostream& = std::cout, int verboseLevel = 1) const = 0; + + /// @} + + +protected: + /// @brief Initialize with an identity linear transform. + GridBase(): mTransform(math::Transform::createLinearTransform()) {} + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// @brief Initialize with metadata and a transform. + /// @throw ValueError if the transform pointer is null + GridBase(const MetaMap& meta, math::Transform::Ptr xform); +#endif + + /// @brief Deep copy another grid's metadata and transform. + GridBase(const GridBase& other): MetaMap(other), mTransform(other.mTransform->copy()) {} + + /// @brief Copy another grid's metadata but share its transform. + GridBase(GridBase& other, ShallowCopy): MetaMap(other), mTransform(other.mTransform) {} + + /// Register a grid type along with a factory function. + static void registerGrid(const Name& type, GridFactory); + /// Remove a grid type from the registry. + static void unregisterGrid(const Name& type); + + +private: + math::Transform::Ptr mTransform; +}; // class GridBase + + +//////////////////////////////////////// + + +using GridPtrVec = std::vector; +using GridPtrVecIter = GridPtrVec::iterator; +using GridPtrVecCIter = GridPtrVec::const_iterator; +using GridPtrVecPtr = SharedPtr; + +using GridCPtrVec = std::vector; +using GridCPtrVecIter = GridCPtrVec::iterator; +using GridCPtrVecCIter = GridCPtrVec::const_iterator; +using GridCPtrVecPtr = SharedPtr; + +using GridPtrSet = std::set; +using GridPtrSetIter = GridPtrSet::iterator; +using GridPtrSetCIter = GridPtrSet::const_iterator; +using GridPtrSetPtr = SharedPtr; + +using GridCPtrSet = std::set; +using GridCPtrSetIter = GridCPtrSet::iterator; +using GridCPtrSetCIter = GridCPtrSet::const_iterator; +using GridCPtrSetPtr = SharedPtr; + + +/// @brief Predicate functor that returns @c true for grids that have a specified name +struct OPENVDB_API GridNamePred +{ + GridNamePred(const Name& _name): name(_name) {} + bool operator()(const GridBase::ConstPtr& g) const { return g && g->getName() == name; } + Name name; +}; + +/// Return the first grid in the given container whose name is @a name. +template +inline typename GridPtrContainerT::value_type +findGridByName(const GridPtrContainerT& container, const Name& name) +{ + using GridPtrT = typename GridPtrContainerT::value_type; + typename GridPtrContainerT::const_iterator it = + std::find_if(container.begin(), container.end(), GridNamePred(name)); + return (it == container.end() ? GridPtrT() : *it); +} + +/// Return the first grid in the given map whose name is @a name. +template +inline GridPtrT +findGridByName(const std::map& container, const Name& name) +{ + using GridPtrMapT = std::map; + for (typename GridPtrMapT::const_iterator it = container.begin(), end = container.end(); + it != end; ++it) + { + const GridPtrT& grid = it->second; + if (grid && grid->getName() == name) return grid; + } + return GridPtrT(); +} +//@} + + +//////////////////////////////////////// + + +/// @brief Container class that associates a tree with a transform and metadata +template +class Grid: public GridBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using TreeType = _TreeType; + using TreePtrType = typename _TreeType::Ptr; + using ConstTreePtrType = typename _TreeType::ConstPtr; + using ValueType = typename _TreeType::ValueType; + using BuildType = typename _TreeType::BuildType; + + using ValueOnIter = typename _TreeType::ValueOnIter; + using ValueOnCIter = typename _TreeType::ValueOnCIter; + using ValueOffIter = typename _TreeType::ValueOffIter; + using ValueOffCIter = typename _TreeType::ValueOffCIter; + using ValueAllIter = typename _TreeType::ValueAllIter; + using ValueAllCIter = typename _TreeType::ValueAllCIter; + + using Accessor = typename tree::ValueAccessor<_TreeType, true>; + using ConstAccessor = typename tree::ValueAccessor; + using UnsafeAccessor = typename tree::ValueAccessor<_TreeType, false>; + using ConstUnsafeAccessor = typename tree::ValueAccessor; + + /// @brief ValueConverter::Type is the type of a grid having the same + /// hierarchy as this grid but a different value type, T. + /// + /// For example, FloatGrid::ValueConverter::Type is equivalent to DoubleGrid. + /// @note If the source grid type is a template argument, it might be necessary + /// to write "typename SourceGrid::template ValueConverter::Type". + template + struct ValueConverter { + using Type = Grid::Type>; + }; + + /// Return a new grid with the given background value. + static Ptr create(const ValueType& background); + /// Return a new grid with background value zero. + static Ptr create(); + /// @brief Return a new grid that contains the given tree. + /// @throw ValueError if the tree pointer is null + static Ptr create(TreePtrType); + /// @brief Return a new, empty grid with the same transform and metadata as the + /// given grid and with background value zero. + static Ptr create(const GridBase& other); + + + /// Construct a new grid with background value zero. + Grid(); + /// Construct a new grid with the given background value. + explicit Grid(const ValueType& background); + /// @brief Construct a new grid that shares the given tree and associates with it + /// an identity linear transform. + /// @throw ValueError if the tree pointer is null + explicit Grid(TreePtrType); + /// Deep copy another grid's metadata, transform and tree. + Grid(const Grid&); + /// @brief Deep copy the metadata, transform and tree of another grid whose tree + /// configuration is the same as this grid's but whose value type is different. + /// Cast the other grid's values to this grid's value type. + /// @throw TypeError if the other grid's tree configuration doesn't match this grid's + /// or if this grid's ValueType is not constructible from the other grid's ValueType. + template + explicit Grid(const Grid&); + /// Deep copy another grid's metadata and transform, but share its tree. + Grid(Grid&, ShallowCopy); + /// @brief Deep copy another grid's metadata and transform, but construct a new tree + /// with background value zero. + explicit Grid(const GridBase&); + + ~Grid() override {} + + /// Disallow assignment, since it wouldn't be obvious whether the copy is deep or shallow. + Grid& operator=(const Grid&) = delete; + + /// @name Copying + /// @{ + + /// @brief Return a new grid of the same type as this grid whose metadata and + /// transform are deep copies of this grid's and whose tree is shared with this grid. + Ptr copy(); + /// @brief Return a new grid of the same type as this grid whose metadata and + /// transform are deep copies of this grid's and whose tree is shared with this grid. + ConstPtr copy() const; + /// @brief Return a new grid of the same type as this grid whose metadata and + /// transform are deep copies of this grid's and whose tree is default-constructed. + Ptr copyWithNewTree() const; + + /// @brief Return a new grid of the same type as this grid whose metadata is a + /// deep copy of this grid's and whose tree and transform are shared with this grid. + GridBase::Ptr copyGrid() override; + /// @brief Return a new grid of the same type as this grid whose metadata is a + /// deep copy of this grid's and whose tree and transform are shared with this grid. + GridBase::ConstPtr copyGrid() const override; + /// @brief Return a new grid of the same type as this grid whose metadata and + /// transform are deep copies of this grid's and whose tree is default-constructed. + GridBase::Ptr copyGridWithNewTree() const override; + //@} + + /// @name Copying + /// @{ + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// @brief Return a new grid of the same type as this grid whose tree and transform + /// is shared with this grid and whose metadata is provided as an argument. + ConstPtr copyReplacingMetadata(const MetaMap& meta) const; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid, whose metadata is a deep copy of this grid's and whose transform is + /// provided as an argument. + /// @throw ValueError if the transform pointer is null + ConstPtr copyReplacingTransform(math::Transform::Ptr xform) const; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid and whose transform and metadata are provided as arguments. + /// @throw ValueError if the transform pointer is null + ConstPtr copyReplacingMetadataAndTransform(const MetaMap& meta, + math::Transform::Ptr xform) const; + + /// @brief Return a new grid of the same type as this grid whose tree and transform + /// is shared with this grid and whose metadata is provided as an argument. + GridBase::ConstPtr copyGridReplacingMetadata(const MetaMap& meta) const override; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid, whose metadata is a deep copy of this grid's and whose transform is + /// provided as an argument. + /// @throw ValueError if the transform pointer is null + GridBase::ConstPtr copyGridReplacingTransform(math::Transform::Ptr xform) const override; + /// @brief Return a new grid of the same type as this grid whose tree is shared with + /// this grid and whose transform and metadata are provided as arguments. + /// @throw ValueError if the transform pointer is null + GridBase::ConstPtr copyGridReplacingMetadataAndTransform(const MetaMap& meta, + math::Transform::Ptr xform) const override; +#endif + + /// @brief Return a new grid whose metadata, transform and tree are deep copies of this grid's. + Ptr deepCopy() const { return Ptr(new Grid(*this)); } + /// @brief Return a new grid whose metadata, transform and tree are deep copies of this grid's. + GridBase::Ptr deepCopyGrid() const override { return this->deepCopy(); } + + //@} + + + /// Return the name of this grid's type. + Name type() const override { return this->gridType(); } + /// Return the name of this type of grid. + static Name gridType() { return TreeType::treeType(); } + + /// Return the name of the type of a voxel's value (e.g., "float" or "vec3d"). + Name valueType() const override { return tree().valueType(); } + + + /// @name Voxel access + /// @{ + + /// @brief Return this grid's background value. + /// @note Use tools::changeBackground to efficiently modify the background value. + const ValueType& background() const { return mTree->background(); } + + /// Return @c true if this grid contains only inactive background voxels. + bool empty() const override { return tree().empty(); } + /// Empty this grid, so that all voxels become inactive background voxels. + void clear() override { tree().clear(); } + + /// @brief Return an accessor that provides random read and write access + /// to this grid's voxels. + /// @details The accessor is safe in the sense that it is registered with this grid's tree. + Accessor getAccessor() { return Accessor(tree()); } + /// @brief Return an unsafe accessor that provides random read and write access + /// to this grid's voxels. + /// @details The accessor is unsafe in the sense that it is not registered + /// with this grid's tree. In some rare cases this can give a performance advantage + /// over a registered accessor, but it is unsafe if the tree topology is modified. + /// @warning Only use this method if you're an expert and know the + /// risks of using an unregistered accessor (see tree/ValueAccessor.h) + UnsafeAccessor getUnsafeAccessor() { return UnsafeAccessor(tree()); } + /// Return an accessor that provides random read-only access to this grid's voxels. + ConstAccessor getAccessor() const { return ConstAccessor(tree()); } + /// Return an accessor that provides random read-only access to this grid's voxels. + ConstAccessor getConstAccessor() const { return ConstAccessor(tree()); } + /// @brief Return an unsafe accessor that provides random read-only access + /// to this grid's voxels. + /// @details The accessor is unsafe in the sense that it is not registered + /// with this grid's tree. In some rare cases this can give a performance advantage + /// over a registered accessor, but it is unsafe if the tree topology is modified. + /// @warning Only use this method if you're an expert and know the + /// risks of using an unregistered accessor (see tree/ValueAccessor.h) + ConstUnsafeAccessor getConstUnsafeAccessor() const { return ConstUnsafeAccessor(tree()); } + + /// Return an iterator over all of this grid's active values (tile and voxel). + ValueOnIter beginValueOn() { return tree().beginValueOn(); } + /// Return an iterator over all of this grid's active values (tile and voxel). + ValueOnCIter beginValueOn() const { return tree().cbeginValueOn(); } + /// Return an iterator over all of this grid's active values (tile and voxel). + ValueOnCIter cbeginValueOn() const { return tree().cbeginValueOn(); } + /// Return an iterator over all of this grid's inactive values (tile and voxel). + ValueOffIter beginValueOff() { return tree().beginValueOff(); } + /// Return an iterator over all of this grid's inactive values (tile and voxel). + ValueOffCIter beginValueOff() const { return tree().cbeginValueOff(); } + /// Return an iterator over all of this grid's inactive values (tile and voxel). + ValueOffCIter cbeginValueOff() const { return tree().cbeginValueOff(); } + /// Return an iterator over all of this grid's values (tile and voxel). + ValueAllIter beginValueAll() { return tree().beginValueAll(); } + /// Return an iterator over all of this grid's values (tile and voxel). + ValueAllCIter beginValueAll() const { return tree().cbeginValueAll(); } + /// Return an iterator over all of this grid's values (tile and voxel). + ValueAllCIter cbeginValueAll() const { return tree().cbeginValueAll(); } + + /// @} + + /// @name Tools + /// @{ + + /// @brief Set all voxels within a given axis-aligned box to a constant value. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box + /// @param value the value to which to set voxels within the box + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive + /// @note This operation generates a sparse, but not always optimally sparse, + /// representation of the filled box. Follow fill operations with a prune() + /// operation for optimal sparseness. + void sparseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + /// @brief Set all voxels within a given axis-aligned box to a constant value. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box + /// @param value the value to which to set voxels within the box + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive + /// @note This operation generates a sparse, but not always optimally sparse, + /// representation of the filled box. Follow fill operations with a prune() + /// operation for optimal sparseness. + void fill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// @brief Set all voxels within a given axis-aligned box to a constant value + /// and ensure that those voxels are all represented at the leaf level. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box. + /// @param value the value to which to set voxels within the box. + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive. + void denseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// Reduce the memory footprint of this grid by increasing its sparseness. + void pruneGrid(float tolerance = 0.0) override; + + /// @brief Clip this grid to the given index-space bounding box. + /// @details Voxels that lie outside the bounding box are set to the background. + /// @warning Clipping a level set will likely produce a grid that is + /// no longer a valid level set. + void clip(const CoordBBox&) override; + + /// @brief Efficiently merge another grid into this grid using one of several schemes. + /// @details This operation is primarily intended to combine grids that are mostly + /// non-overlapping (for example, intermediate grids from computations that are + /// parallelized across disjoint regions of space). + /// @warning This operation always empties the other grid. + void merge(Grid& other, MergePolicy policy = MERGE_ACTIVE_STATES); + + /// @brief Union this grid's set of active values with the active values + /// of the other grid, whose value type may be different. + /// @details The resulting state of a value is active if the corresponding value + /// was already active OR if it is active in the other grid. Also, a resulting + /// value maps to a voxel if the corresponding value already mapped to a voxel + /// OR if it is a voxel in the other grid. Thus, a resulting value can only + /// map to a tile if the corresponding value already mapped to a tile + /// AND if it is a tile value in the other grid. + /// + /// @note This operation modifies only active states, not values. + /// Specifically, active tiles and voxels in this grid are not changed, and + /// tiles or voxels that were inactive in this grid but active in the other grid + /// are marked as active in this grid but left with their original values. + template + void topologyUnion(const Grid& other); + + /// @brief Intersect this grid's set of active values with the active values + /// of the other grid, whose value type may be different. + /// @details The resulting state of a value is active only if the corresponding + /// value was already active AND if it is active in the other tree. Also, a + /// resulting value maps to a voxel if the corresponding value + /// already mapped to an active voxel in either of the two grids + /// and it maps to an active tile or voxel in the other grid. + /// + /// @note This operation can delete branches of this grid that overlap with + /// inactive tiles in the other grid. Also, because it can deactivate voxels, + /// it can create leaf nodes with no active values. Thus, it is recommended + /// to prune this grid after calling this method. + template + void topologyIntersection(const Grid& other); + + /// @brief Difference this grid's set of active values with the active values + /// of the other grid, whose value type may be different. + /// @details After this method is called, voxels in this grid will be active + /// only if they were active to begin with and if the corresponding voxels + /// in the other grid were inactive. + /// + /// @note This operation can delete branches of this grid that overlap with + /// active tiles in the other grid. Also, because it can deactivate voxels, + /// it can create leaf nodes with no active values. Thus, it is recommended + /// to prune this grid after calling this method. + template + void topologyDifference(const Grid& other); + + /// @} + + /// @name Statistics + /// @{ + + /// Return the number of active voxels. + Index64 activeVoxelCount() const override { return tree().activeVoxelCount(); } + /// Return the axis-aligned bounding box of all active voxels. + CoordBBox evalActiveVoxelBoundingBox() const override; + /// Return the dimensions of the axis-aligned bounding box of all active voxels. + Coord evalActiveVoxelDim() const override; + /// Return the minimum and maximum active values in this grid. + void evalMinMax(ValueType& minVal, ValueType& maxVal) const; + + /// Return the number of bytes of memory used by this grid. + /// @todo Add transform().memUsage() + Index64 memUsage() const override { return tree().memUsage(); } + + /// @} + + + /// @name Tree + /// @{ + + //@{ + /// @brief Return a pointer to this grid's tree, which might be + /// shared with other grids. The pointer is guaranteed to be non-null. + TreePtrType treePtr() { return mTree; } + ConstTreePtrType treePtr() const { return mTree; } + ConstTreePtrType constTreePtr() const { return mTree; } + TreeBase::ConstPtr constBaseTreePtr() const override { return mTree; } + //@} + //@{ + /// @brief Return a reference to this grid's tree, which might be + /// shared with other grids. + /// @note Calling setTree() on this grid invalidates all references + /// previously returned by this method. + TreeType& tree() { return *mTree; } + const TreeType& tree() const { return *mTree; } + const TreeType& constTree() const { return *mTree; } + //@} + + /// @} + + /// @name Tree + /// @{ + + /// @brief Associate the given tree with this grid, in place of its existing tree. + /// @throw ValueError if the tree pointer is null + /// @throw TypeError if the tree is not of type TreeType + /// @note Invalidates all references previously returned by baseTree(), + /// constBaseTree(), tree() or constTree(). + void setTree(TreeBase::Ptr) override; + + /// @brief Associate a new, empty tree with this grid, in place of its existing tree. + /// @note The new tree has the same background value as the existing tree. + void newTree() override; + + /// @} + + + /// @name I/O + /// @{ + + /// @brief Read the grid topology from a stream. + /// This will read only the grid structure, not the actual data buffers. + void readTopology(std::istream&) override; + /// @brief Write the grid topology to a stream. + /// This will write only the grid structure, not the actual data buffers. + void writeTopology(std::ostream&) const override; + + /// Read all data buffers for this grid. + void readBuffers(std::istream&) override; + /// Read all of this grid's data buffers that intersect the given index-space bounding box. + void readBuffers(std::istream&, const CoordBBox&) override; + /// @brief Read all of this grid's data buffers that are not yet resident in memory + /// (because delayed loading is in effect). + /// @details If this grid was read from a memory-mapped file, this operation + /// disconnects the grid from the file. + /// @sa io::File::open, io::MappedFile + void readNonresidentBuffers() const override; + /// Write out all data buffers for this grid. + void writeBuffers(std::ostream&) const override; + + /// Output a human-readable description of this grid. + void print(std::ostream& = std::cout, int verboseLevel = 1) const override; + + /// @} + + /// @brief Return @c true if grids of this type require multiple I/O passes + /// to read and write data buffers. + /// @sa HasMultiPassIO + static inline bool hasMultiPassIO(); + + + /// @name Registry + /// @{ + + /// Return @c true if this grid type is registered. + static bool isRegistered() { return GridBase::isRegistered(Grid::gridType()); } + /// Register this grid type along with a factory function. + static void registerGrid() + { + GridBase::registerGrid(Grid::gridType(), Grid::factory); + if (!tree::internal::LeafBufferFlags::IsAtomic) { + OPENVDB_LOG_WARN("delayed loading of grids of type " << Grid::gridType() + << " might not be threadsafe on this platform"); + } + } + /// Remove this grid type from the registry. + static void unregisterGrid() { GridBase::unregisterGrid(Grid::gridType()); } + + /// @} + + +private: +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// Deep copy metadata, but share tree and transform. + Grid(TreePtrType tree, const MetaMap& meta, math::Transform::Ptr xform); +#endif + + /// Helper function for use with registerGrid() + static GridBase::Ptr factory() { return Grid::create(); } + + TreePtrType mTree; +}; // class Grid + + +//////////////////////////////////////// + + +/// @brief Cast a generic grid pointer to a pointer to a grid of a concrete class. +/// +/// Return a null pointer if the input pointer is null or if it +/// points to a grid that is not of type @c GridType. +/// +/// @note Calling gridPtrCast(grid) is equivalent to calling +/// GridBase::grid(grid). +template +inline typename GridType::Ptr +gridPtrCast(const GridBase::Ptr& grid) +{ + return GridBase::grid(grid); +} + + +/// @brief Cast a generic const grid pointer to a const pointer to a grid +/// of a concrete class. +/// +/// Return a null pointer if the input pointer is null or if it +/// points to a grid that is not of type @c GridType. +/// +/// @note Calling gridConstPtrCast(grid) is equivalent to calling +/// GridBase::constGrid(grid). +template +inline typename GridType::ConstPtr +gridConstPtrCast(const GridBase::ConstPtr& grid) +{ + return GridBase::constGrid(grid); +} + + +//////////////////////////////////////// + + +/// @{ +/// @brief Return a pointer to a deep copy of the given grid, provided that +/// the grid's concrete type is @c GridType. +/// +/// Return a null pointer if the input pointer is null or if it +/// points to a grid that is not of type @c GridType. +template +inline typename GridType::Ptr +deepCopyTypedGrid(const GridBase::ConstPtr& grid) +{ + if (!grid || !grid->isType()) return typename GridType::Ptr(); + return gridPtrCast(grid->deepCopyGrid()); +} + + +template +inline typename GridType::Ptr +deepCopyTypedGrid(const GridBase& grid) +{ + if (!grid.isType()) return typename GridType::Ptr(); + return gridPtrCast(grid.deepCopyGrid()); +} +/// @} + + +//////////////////////////////////////// + + +//@{ +/// @brief This adapter allows code that is templated on a Tree type to +/// accept either a Tree type or a Grid type. +template +struct TreeAdapter +{ + using TreeType = _TreeType; + using NonConstTreeType = typename std::remove_const::type; + using TreePtrType = typename TreeType::Ptr; + using ConstTreePtrType = typename TreeType::ConstPtr; + using NonConstTreePtrType = typename NonConstTreeType::Ptr; + using GridType = Grid; + using NonConstGridType = Grid; + using GridPtrType = typename GridType::Ptr; + using NonConstGridPtrType = typename NonConstGridType::Ptr; + using ConstGridPtrType = typename GridType::ConstPtr; + using ValueType = typename TreeType::ValueType; + using AccessorType = typename tree::ValueAccessor; + using ConstAccessorType = typename tree::ValueAccessor; + using NonConstAccessorType = typename tree::ValueAccessor; + + static TreeType& tree(TreeType& t) { return t; } + static TreeType& tree(GridType& g) { return g.tree(); } + static const TreeType& tree(const TreeType& t) { return t; } + static const TreeType& tree(const GridType& g) { return g.tree(); } + static const TreeType& constTree(TreeType& t) { return t; } + static const TreeType& constTree(GridType& g) { return g.constTree(); } + static const TreeType& constTree(const TreeType& t) { return t; } + static const TreeType& constTree(const GridType& g) { return g.constTree(); } +}; + + +/// Partial specialization for Grid types +template +struct TreeAdapter > +{ + using TreeType = _TreeType; + using NonConstTreeType = typename std::remove_const::type; + using TreePtrType = typename TreeType::Ptr; + using ConstTreePtrType = typename TreeType::ConstPtr; + using NonConstTreePtrType = typename NonConstTreeType::Ptr; + using GridType = Grid; + using NonConstGridType = Grid; + using GridPtrType = typename GridType::Ptr; + using NonConstGridPtrType = typename NonConstGridType::Ptr; + using ConstGridPtrType = typename GridType::ConstPtr; + using ValueType = typename TreeType::ValueType; + using AccessorType = typename tree::ValueAccessor; + using ConstAccessorType = typename tree::ValueAccessor; + using NonConstAccessorType = typename tree::ValueAccessor; + + static TreeType& tree(TreeType& t) { return t; } + static TreeType& tree(GridType& g) { return g.tree(); } + static const TreeType& tree(const TreeType& t) { return t; } + static const TreeType& tree(const GridType& g) { return g.tree(); } + static const TreeType& constTree(TreeType& t) { return t; } + static const TreeType& constTree(GridType& g) { return g.constTree(); } + static const TreeType& constTree(const TreeType& t) { return t; } + static const TreeType& constTree(const GridType& g) { return g.constTree(); } +}; + +/// Partial specialization for ValueAccessor types +template +struct TreeAdapter > +{ + using TreeType = _TreeType; + using NonConstTreeType = typename std::remove_const::type; + using TreePtrType = typename TreeType::Ptr; + using ConstTreePtrType = typename TreeType::ConstPtr; + using NonConstTreePtrType = typename NonConstTreeType::Ptr; + using GridType = Grid; + using NonConstGridType = Grid; + using GridPtrType = typename GridType::Ptr; + using NonConstGridPtrType = typename NonConstGridType::Ptr; + using ConstGridPtrType = typename GridType::ConstPtr; + using ValueType = typename TreeType::ValueType; + using AccessorType = typename tree::ValueAccessor; + using ConstAccessorType = typename tree::ValueAccessor; + using NonConstAccessorType = typename tree::ValueAccessor; + + static TreeType& tree(TreeType& t) { return t; } + static TreeType& tree(GridType& g) { return g.tree(); } + static TreeType& tree(AccessorType& a) { return a.tree(); } + static const TreeType& tree(const TreeType& t) { return t; } + static const TreeType& tree(const GridType& g) { return g.tree(); } + static const TreeType& tree(const AccessorType& a) { return a.tree(); } + static const TreeType& constTree(TreeType& t) { return t; } + static const TreeType& constTree(GridType& g) { return g.constTree(); } + static const TreeType& constTree(const TreeType& t) { return t; } + static const TreeType& constTree(const GridType& g) { return g.constTree(); } +}; + +//@} + + +//////////////////////////////////////// + + +/// @brief Metafunction that specifies whether a given leaf node, tree, or grid type +/// requires multiple passes to read and write voxel data +/// @details Multi-pass I/O allows one to optimize the data layout of leaf nodes +/// for certain access patterns during delayed loading. +/// @sa io::MultiPass +template +struct HasMultiPassIO { + static const bool value = std::is_base_of::value; +}; + +// Partial specialization for Tree types +template +struct HasMultiPassIO> { + // A tree is multi-pass if its (root node's) leaf node type is multi-pass. + static const bool value = HasMultiPassIO::value; +}; + +// Partial specialization for Grid types +template +struct HasMultiPassIO> { + // A grid is multi-pass if its tree's leaf node type is multi-pass. + static const bool value = HasMultiPassIO::value; +}; + + +//////////////////////////////////////// + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +inline GridBase::GridBase(const MetaMap& meta, math::Transform::Ptr xform) + : MetaMap(meta) + , mTransform(xform) +{ + if (!xform) OPENVDB_THROW(ValueError, "Transform pointer is null"); +} +#endif + +template +inline typename GridType::Ptr +GridBase::grid(const GridBase::Ptr& grid) +{ + // The string comparison on type names is slower than a dynamic pointer cast, but + // it is safer when pointers cross DSO boundaries, as they do in many Houdini nodes. + if (grid && grid->type() == GridType::gridType()) { + return StaticPtrCast(grid); + } + return typename GridType::Ptr(); +} + + +template +inline typename GridType::ConstPtr +GridBase::grid(const GridBase::ConstPtr& grid) +{ + return ConstPtrCast( + GridBase::grid(ConstPtrCast(grid))); +} + + +template +inline typename GridType::ConstPtr +GridBase::constGrid(const GridBase::Ptr& grid) +{ + return ConstPtrCast(GridBase::grid(grid)); +} + + +template +inline typename GridType::ConstPtr +GridBase::constGrid(const GridBase::ConstPtr& grid) +{ + return ConstPtrCast( + GridBase::grid(ConstPtrCast(grid))); +} + + +inline TreeBase::Ptr +GridBase::baseTreePtr() +{ + return ConstPtrCast(this->constBaseTreePtr()); +} + + +inline void +GridBase::setTransform(math::Transform::Ptr xform) +{ + if (!xform) OPENVDB_THROW(ValueError, "Transform pointer is null"); + mTransform = xform; +} + + +//////////////////////////////////////// + + +template +inline Grid::Grid(): mTree(new TreeType) +{ +} + + +template +inline Grid::Grid(const ValueType &background): mTree(new TreeType(background)) +{ +} + + +template +inline Grid::Grid(TreePtrType tree): mTree(tree) +{ + if (!tree) OPENVDB_THROW(ValueError, "Tree pointer is null"); +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +template +inline Grid::Grid(TreePtrType tree, const MetaMap& meta, math::Transform::Ptr xform): + GridBase(meta, xform), + mTree(tree) +{ + if (!tree) OPENVDB_THROW(ValueError, "Tree pointer is null"); +} +#endif + + +template +inline Grid::Grid(const Grid& other): + GridBase(other), + mTree(StaticPtrCast(other.mTree->copy())) +{ +} + + +template +template +inline Grid::Grid(const Grid& other): + GridBase(other), + mTree(new TreeType(other.constTree())) +{ +} + + +template +inline Grid::Grid(Grid& other, ShallowCopy): + GridBase(other), + mTree(other.mTree) +{ +} + + +template +inline Grid::Grid(const GridBase& other): + GridBase(other), + mTree(new TreeType) +{ +} + + +//static +template +inline typename Grid::Ptr +Grid::create() +{ + return Grid::create(zeroVal()); +} + + +//static +template +inline typename Grid::Ptr +Grid::create(const ValueType& background) +{ + return Ptr(new Grid(background)); +} + + +//static +template +inline typename Grid::Ptr +Grid::create(TreePtrType tree) +{ + return Ptr(new Grid(tree)); +} + + +//static +template +inline typename Grid::Ptr +Grid::create(const GridBase& other) +{ + return Ptr(new Grid(other)); +} + + +//////////////////////////////////////// + + +template +inline typename Grid::ConstPtr +Grid::copy() const +{ + return ConstPtr{new Grid{*const_cast(this), ShallowCopy{}}}; +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +template +inline typename Grid::ConstPtr +Grid::copyReplacingMetadata(const MetaMap& meta) const +{ + math::Transform::Ptr transformPtr = ConstPtrCast( + this->constTransformPtr()); + TreePtrType treePtr = ConstPtrCast(this->constTreePtr()); + return ConstPtr{new Grid{treePtr, meta, transformPtr}}; +} + +template +inline typename Grid::ConstPtr +Grid::copyReplacingTransform(math::Transform::Ptr xform) const +{ + return this->copyReplacingMetadataAndTransform(*this, xform); +} + +template +inline typename Grid::ConstPtr +Grid::copyReplacingMetadataAndTransform(const MetaMap& meta, + math::Transform::Ptr xform) const +{ + TreePtrType treePtr = ConstPtrCast(this->constTreePtr()); + return ConstPtr{new Grid{treePtr, meta, xform}}; +} +#endif + + +template +inline typename Grid::Ptr +Grid::copy() +{ + return Ptr{new Grid{*this, ShallowCopy{}}}; +} + + +template +inline typename Grid::Ptr +Grid::copyWithNewTree() const +{ + Ptr result{new Grid{*const_cast(this), ShallowCopy{}}}; + result->newTree(); + return result; +} + + +template +inline GridBase::Ptr +Grid::copyGrid() +{ + return this->copy(); +} + +template +inline GridBase::ConstPtr +Grid::copyGrid() const +{ + return this->copy(); +} + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +template +inline GridBase::ConstPtr +Grid::copyGridReplacingMetadata(const MetaMap& meta) const +{ + return this->copyReplacingMetadata(meta); +} + +template +inline GridBase::ConstPtr +Grid::copyGridReplacingTransform(math::Transform::Ptr xform) const +{ + return this->copyReplacingTransform(xform); +} + +template +inline GridBase::ConstPtr +Grid::copyGridReplacingMetadataAndTransform(const MetaMap& meta, + math::Transform::Ptr xform) const +{ + return this->copyReplacingMetadataAndTransform(meta, xform); +} +#endif + +template +inline GridBase::Ptr +Grid::copyGridWithNewTree() const +{ + return this->copyWithNewTree(); +} + + +//////////////////////////////////////// + + +template +inline void +Grid::setTree(TreeBase::Ptr tree) +{ + if (!tree) OPENVDB_THROW(ValueError, "Tree pointer is null"); + if (tree->type() != TreeType::treeType()) { + OPENVDB_THROW(TypeError, "Cannot assign a tree of type " + + tree->type() + " to a grid of type " + this->type()); + } + mTree = StaticPtrCast(tree); +} + + +template +inline void +Grid::newTree() +{ + mTree.reset(new TreeType(this->background())); +} + + +//////////////////////////////////////// + + +template +inline void +Grid::sparseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + tree().sparseFill(bbox, value, active); +} + + +template +inline void +Grid::fill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + this->sparseFill(bbox, value, active); +} + +template +inline void +Grid::denseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + tree().denseFill(bbox, value, active); +} + +template +inline void +Grid::pruneGrid(float tolerance) +{ + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value = zeroVal() + tolerance; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + this->tree().prune(static_cast(value)); +} + +template +inline void +Grid::clip(const CoordBBox& bbox) +{ + tree().clip(bbox); +} + +template +inline void +Grid::merge(Grid& other, MergePolicy policy) +{ + tree().merge(other.tree(), policy); +} + + +template +template +inline void +Grid::topologyUnion(const Grid& other) +{ + tree().topologyUnion(other.tree()); +} + + +template +template +inline void +Grid::topologyIntersection(const Grid& other) +{ + tree().topologyIntersection(other.tree()); +} + + +template +template +inline void +Grid::topologyDifference(const Grid& other) +{ + tree().topologyDifference(other.tree()); +} + + +//////////////////////////////////////// + + +template +inline void +Grid::evalMinMax(ValueType& minVal, ValueType& maxVal) const +{ + tree().evalMinMax(minVal, maxVal); +} + + +template +inline CoordBBox +Grid::evalActiveVoxelBoundingBox() const +{ + CoordBBox bbox; + tree().evalActiveVoxelBoundingBox(bbox); + return bbox; +} + + +template +inline Coord +Grid::evalActiveVoxelDim() const +{ + Coord dim; + const bool nonempty = tree().evalActiveVoxelDim(dim); + return (nonempty ? dim : Coord()); +} + + +//////////////////////////////////////// + + +/// @internal Consider using the stream tagging mechanism (see io::Archive) +/// to specify the float precision, but note that the setting is per-grid. + +template +inline void +Grid::readTopology(std::istream& is) +{ + tree().readTopology(is, saveFloatAsHalf()); +} + + +template +inline void +Grid::writeTopology(std::ostream& os) const +{ + tree().writeTopology(os, saveFloatAsHalf()); +} + + +template +inline void +Grid::readBuffers(std::istream& is) +{ + if (!hasMultiPassIO() || (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_MULTIPASS_IO)) { + tree().readBuffers(is, saveFloatAsHalf()); + } else { + uint16_t numPasses = 1; + is.read(reinterpret_cast(&numPasses), sizeof(uint16_t)); + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(is); + assert(bool(meta)); + for (uint16_t passIndex = 0; passIndex < numPasses; ++passIndex) { + uint32_t pass = (uint32_t(numPasses) << 16) | uint32_t(passIndex); + meta->setPass(pass); + tree().readBuffers(is, saveFloatAsHalf()); + } + } +} + + +/// @todo Refactor this and the readBuffers() above +/// once support for ABI 2 compatibility is dropped. +template +inline void +Grid::readBuffers(std::istream& is, const CoordBBox& bbox) +{ + if (!hasMultiPassIO() || (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_MULTIPASS_IO)) { + tree().readBuffers(is, bbox, saveFloatAsHalf()); + } else { + uint16_t numPasses = 1; + is.read(reinterpret_cast(&numPasses), sizeof(uint16_t)); + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(is); + assert(bool(meta)); + for (uint16_t passIndex = 0; passIndex < numPasses; ++passIndex) { + uint32_t pass = (uint32_t(numPasses) << 16) | uint32_t(passIndex); + meta->setPass(pass); + tree().readBuffers(is, saveFloatAsHalf()); + } + // Cannot clip inside readBuffers() when using multiple passes, + // so instead clip afterwards. + tree().clip(bbox); + } +} + + +template +inline void +Grid::readNonresidentBuffers() const +{ + tree().readNonresidentBuffers(); +} + + +template +inline void +Grid::writeBuffers(std::ostream& os) const +{ + if (!hasMultiPassIO()) { + tree().writeBuffers(os, saveFloatAsHalf()); + } else { + // Determine how many leaf buffer passes are required for this grid + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(os); + assert(bool(meta)); + uint16_t numPasses = 1; + meta->setCountingPasses(true); + meta->setPass(0); + tree().writeBuffers(os, saveFloatAsHalf()); + numPasses = static_cast(meta->pass()); + os.write(reinterpret_cast(&numPasses), sizeof(uint16_t)); + meta->setCountingPasses(false); + + // Save out the data blocks of the grid. + for (uint16_t passIndex = 0; passIndex < numPasses; ++passIndex) { + uint32_t pass = (uint32_t(numPasses) << 16) | uint32_t(passIndex); + meta->setPass(pass); + tree().writeBuffers(os, saveFloatAsHalf()); + } + } +} + + +//static +template +inline bool +Grid::hasMultiPassIO() +{ + return HasMultiPassIO::value; +} + + +template +inline void +Grid::print(std::ostream& os, int verboseLevel) const +{ + tree().print(os, verboseLevel); + + if (metaCount() > 0) { + os << "Additional metadata:" << std::endl; + for (ConstMetaIterator it = beginMeta(), end = endMeta(); it != end; ++it) { + os << " " << it->first; + if (it->second) { + const std::string value = it->second->str(); + if (!value.empty()) os << ": " << value; + } + os << "\n"; + } + } + + os << "Transform:" << std::endl; + transform().print(os, /*indent=*/" "); + os << std::endl; +} + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +createGrid(const typename GridType::ValueType& background) +{ + return GridType::create(background); +} + + +template +inline typename GridType::Ptr +createGrid() +{ + return GridType::create(); +} + + +template +inline typename Grid::Ptr +createGrid(TreePtrType tree) +{ + using TreeType = typename TreePtrType::element_type; + return Grid::create(tree); +} + + +template +typename GridType::Ptr +createLevelSet(Real voxelSize, Real halfWidth) +{ + using ValueType = typename GridType::ValueType; + + // GridType::ValueType is required to be a floating-point scalar. + static_assert(std::is_floating_point::value, + "level-set grids must be floating-point-valued"); + + typename GridType::Ptr grid = GridType::create( + /*background=*/static_cast(voxelSize * halfWidth)); + grid->setTransform(math::Transform::createLinearTransform(voxelSize)); + grid->setGridClass(GRID_LEVEL_SET); + return grid; +} + + +//////////////////////////////////////// + + +namespace internal { + +/// @private +template +struct GridApplyImpl { static bool apply(GridBaseT&, OpT&) { return false; } }; + +// Partial specialization for (nonempty) TypeLists +/// @private +template +struct GridApplyImpl> +{ + static bool apply(GridBaseT& grid, OpT& op) + { + if (grid.template isType()) { + op(static_cast::Type&>(grid)); + return true; + } + return GridApplyImpl>::apply(grid, op); + } +}; + +} // namespace internal + + +template +inline bool +GridBase::apply(OpT& op) const +{ + return internal::GridApplyImpl::apply(*this, op); +} + +template +inline bool +GridBase::apply(OpT& op) +{ + return internal::GridApplyImpl::apply(*this, op); +} + +template +inline bool +GridBase::apply(const OpT& op) const +{ + return internal::GridApplyImpl::apply(*this, op); +} + +template +inline bool +GridBase::apply(const OpT& op) +{ + return internal::GridApplyImpl::apply(*this, op); +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_GRID_HAS_BEEN_INCLUDED diff --git a/openvdb/LICENSE b/openvdb/LICENSE new file mode 100644 index 00000000..a612ad98 --- /dev/null +++ b/openvdb/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/openvdb/Makefile b/openvdb/Makefile new file mode 100644 index 00000000..71f3d8ef --- /dev/null +++ b/openvdb/Makefile @@ -0,0 +1,1057 @@ +# Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 +# +# Makefile for the OpenVDB library + +# See INSTALL for a list of requirements. +# +# Targets: +# lib the OpenVDB library +# +# doc HTML documentation (doc/html/index.html) +# pdfdoc PDF documentation (doc/latex/refman.pdf; +# requires LaTeX and ghostscript) +# python OpenVDB Python module +# pytest unit tests for the Python module +# pydoc HTML documentation for the Python module +# (doc/html/python/index.html) +# vdb_lod command-line tool to generate volume mipmaps +# vdb_print command-line tool to inspect OpenVDB files +# vdb_render command-line tool to ray-trace OpenVDB files +# vdb_view command-line tool to view OpenVDB files +# vdb_test unit tests for the OpenVDB library +# +# all [default target] all of the above +# install install all of the above except vdb_test +# into subdirectories of DESTDIR +# install_lib install just the OpenVDB library and its headers +# into subdirectories of DESTDIR +# depend recompute source file header dependencies +# header_test check for missing or indirectly included headers +# clean delete generated files from the local directory +# test run tests +# +# Options: +# abi=N build for compatibility with version N of the +# OpenVDB Grid ABI, where N is 2, 3, 4, etc. +# (some newer features will be disabled) +# shared=no link executables against static OpenVDB libraries +# (default: link against shared libraries) +# debug=yes build with debugging symbols and without optimization +# verbose=yes run commands (e.g., doxygen) in verbose mode +# strict=yes Enable a collection of pre defined compiler warnings +# for GCC and clang + + +# +# The following variables must be defined, either here or on the command line +# (e.g., "make install DESTDIR=/usr/local"): +# +# Note that if you plan to build the Houdini OpenVDB tools (distributed +# separately), you must build the OpenVDB library and the Houdini tools +# against compatible versions of the Boost, OpenEXR and TBB libraries. +# Until Houdini 16.5, all three were included in the HDK, so the relevant +# variables below point by default to the HDK library and header directories: +# $(HDSO) and $(HT)/include, respectively. (Source the houdini_setup script +# to set those two environment variables.) You must provide your own +# distribution of Boost. +# +# To build the OpenVDB Python module, you will need local distributions of +# Python, Boost.Python, and optionally NumPy. The Houdini HDK includes +# Python 2.x, but not the libboost_python library or NumPy or the Boost.Python +# headers, so both Boost.Python and NumPy have to be built separately. Point +# the variables $(BOOST_PYTHON_LIB_DIR), $(BOOST_PYTHON_LIB) and +# $(NUMPY_INCL_DIR) below to your local distributions of those libraries. +# + +# The directory into which to install libraries, executables and header files +DESTDIR := /tmp/OpenVDB + +# The directory into which to install libraries (e.g., for Linux multiarch support) +DESTDIR_LIB_DIR := $(DESTDIR)/lib + +# The parent directory of the boost/ header directory +BOOST_INCL_DIR := $(HT)/include +# The directory containing libboost_iostreams, libboost_system, etc. +BOOST_LIB_DIR := $(HDSO) +BOOST_LIB := -lboost_iostreams -lboost_system +BOOST_THREAD_LIB := -lboost_thread + +# The parent directory of the OpenEXR/ header directory +EXR_INCL_DIR := $(HT)/include +# The directory containing IlmImf +EXR_LIB_DIR := $(HDSO) +EXR_LIB := -lIlmImf + +# The parent directory of the OpenEXR/ header directory (which contains half.h) +ILMBASE_INCL_DIR := $(EXR_INCL_DIR) +# The directory containing libIlmThread, libIlmThread, libHalf etc. +ILMBASE_LIB_DIR := $(EXR_LIB_DIR) +ILMBASE_LIB := -lIlmThread -lIex -lImath +HALF_LIB := -lHalf + +# The parent directory of the tbb/ header directory +TBB_INCL_DIR := $(HT)/include +# The directory containing libtbb +TBB_LIB_DIR := $(HDSO) +TBB_LIB := -ltbb + +# The parent directory of the blosc.h header +# (leave blank if Blosc is unavailable) +BLOSC_INCL_DIR := $(HT)/include +# The directory containing libblosc +BLOSC_LIB_DIR := $(HDSO) +BLOSC_LIB := -lblosc + +# A scalable, concurrent malloc replacement library +# such as jemalloc (included in the Houdini HDK) or TBB malloc +# (leave blank if unavailable) +CONCURRENT_MALLOC_LIB := -ljemalloc +#CONCURRENT_MALLOC_LIB := -ltbbmalloc_proxy -ltbbmalloc +# The directory containing the malloc replacement library +CONCURRENT_MALLOC_LIB_DIR := $(HDSO) + +# The parent directory of the cppunit/ header directory +# (leave blank if CppUnit is unavailable) +CPPUNIT_INCL_DIR := +# The directory containing libcppunit +CPPUNIT_LIB_DIR := +CPPUNIT_LIB := -lcppunit + +# The parent directory of the log4cplus/ header directory +# (leave blank if log4cplus is unavailable) +LOG4CPLUS_INCL_DIR := /rel/folio/log4cplus/log4cplus-1.1.2-latest/sys_include +# The directory containing liblog4cplus +LOG4CPLUS_LIB_DIR := /rel/folio/log4cplus/log4cplus-1.1.2-latest/library/c++11 +LOG4CPLUS_LIB := -llog4cplus + +# The directory containing glfw.h +# (leave blank if GLFW is unavailable) +GLFW_INCL_DIR := /rel/third_party/glfw/glfw-3.0.1/include +# The directory containing libglfw +GLFW_LIB_DIR := /rel/third_party/glfw/glfw-3.0.1/lib +GLFW_LIB := -lglfw +# The major version number of the GLFW library +# (header filenames changed between GLFW 2 and 3, so this must be specified explicitly) +GLFW_MAJOR_VERSION := 3 + +# The version of Python for which to build the OpenVDB module +# (leave blank if Python is unavailable) +PYTHON_VERSION := 2.7 +# The directory containing Python.h +PYTHON_INCL_DIR := $(HFS)/python/include/python$(PYTHON_VERSION) +# The directory containing pyconfig.h +PYCONFIG_INCL_DIR := $(PYTHON_INCL_DIR) +# The directory containing libpython +PYTHON_LIB_DIR := $(HFS)/python/lib +PYTHON_LIB := -lpython$(PYTHON_VERSION) +# The directory containing libboost_python +BOOST_PYTHON_LIB_DIR := /rel/config/studio/baseline/boost/1.55.0.0/gcc-4.8.1.0/python-2.7.10.0/ext/lib/ +BOOST_PYTHON_LIB := -lboost_python-mt +# The directory containing arrayobject.h +# (leave blank if NumPy is unavailable) +NUMPY_INCL_DIR := /rel/lang/python/2.7.9-1/lib/python2.7/site-packages/numpy/core/include/numpy/ +# The Epydoc executable +# (leave blank if Epydoc is unavailable) +EPYDOC := /rel/map/generic_default-2014.24.237/bin/epydoc +# Set PYTHON_WRAP_ALL_GRID_TYPES to "yes" to specify that the Python module +# should expose (almost) all of the grid types defined in openvdb.h +# Otherwise, only FloatGrid, BoolGrid and Vec3SGrid will be exposed +# (see, e.g., exportIntGrid() in python/pyIntGrid.cc). +# Compiling the Python module with PYTHON_WRAP_ALL_GRID_TYPES set to "yes" +# can be very memory-intensive. +PYTHON_WRAP_ALL_GRID_TYPES := no + +# The Doxygen executable +# (leave blank if Doxygen is unavailable) +DOXYGEN := doxygen + + +# +# Ideally, users shouldn't need to change anything below this line. +# + +SHELL = /bin/bash + +# Turn off implicit rules for speed. +.SUFFIXES: + +ifneq (,$(INSTALL_DIR)) + $(warning Warning: $$(INSTALL_DIR) is no longer used; set $$(DESTDIR) instead.) +endif + +# Determine the platform. +ifeq ("$(OS)","Windows_NT") + WINDOWS_NT := 1 +else + UNAME_S := $(shell uname -s) + ifeq ("$(UNAME_S)","Linux") + LINUX := 1 + else + ifeq ("$(UNAME_S)","Darwin") + MBSD := 1 + endif + endif +endif + +ifeq (yes,$(strip $(debug))) + OPTIMIZE := -g +else + OPTIMIZE := -O3 -DNDEBUG +endif + +ifeq (yes,$(strip $(verbose))) + QUIET := + QUIET_TEST := -v +else + QUIET := > /dev/null + QUIET_TEST := $(QUIET) +endif + +has_blosc := no +ifneq (,$(and $(BLOSC_LIB_DIR),$(BLOSC_INCL_DIR),$(BLOSC_LIB))) + has_blosc := yes +endif + +has_cppunit := no +ifneq (,$(and $(CPPUNIT_INCL_DIR),$(CPPUNIT_LIB_DIR),$(CPPUNIT_LIB))) + has_cppunit := yes +endif + +has_glfw := no +ifneq (,$(and $(GLFW_LIB_DIR),$(GLFW_INCL_DIR),$(GLFW_LIB))) + has_glfw := yes +endif + +has_log4cplus := no +ifneq (,$(and $(LOG4CPLUS_LIB_DIR),$(LOG4CPLUS_INCL_DIR),$(LOG4CPLUS_LIB))) + has_log4cplus := yes +endif + +has_python := no +ifneq (,$(and $(PYTHON_VERSION),$(PYTHON_LIB_DIR),$(PYTHON_INCL_DIR), \ + $(PYCONFIG_INCL_DIR),$(PYTHON_LIB),$(BOOST_PYTHON_LIB_DIR),$(BOOST_PYTHON_LIB))) + has_python := yes +endif + +INCLDIRS := -I . -I .. -isystem $(BOOST_INCL_DIR) -isystem $(ILMBASE_INCL_DIR) -isystem $(TBB_INCL_DIR) +ifeq (yes,$(has_blosc)) + INCLDIRS += -isystem $(BLOSC_INCL_DIR) +endif +ifeq (yes,$(has_log4cplus)) + INCLDIRS += -isystem $(LOG4CPLUS_INCL_DIR) +endif + +CXXFLAGS += -std=c++11 + +CXXFLAGS += -pthread $(OPTIMIZE) $(INCLDIRS) +ifeq (yes,$(has_blosc)) + CXXFLAGS += -DOPENVDB_USE_BLOSC +endif +ifeq (yes,$(has_log4cplus)) + CXXFLAGS += -DOPENVDB_USE_LOG4CPLUS +endif +abi := $(strip $(abi)) +ifneq (,$(abi)) + CXXFLAGS += -DOPENVDB_3_ABI_COMPATIBLE # TODO: deprecated + CXXFLAGS += -DOPENVDB_ABI_VERSION_NUMBER=$(abi) +endif +ifneq (2,$(strip $(GLFW_MAJOR_VERSION))) + CXXFLAGS += -DOPENVDB_USE_GLFW_3 +endif + +ifeq (yes,$(strip $(strict))) + USING_CLANG=$(shell ${CXX} --version | grep clang) + USING_GCC=$(shell ${CXX} --version | grep GCC) + ifneq (,$(USING_CLANG)) + CXXFLAGS += \ + -Werror \ + -Wall \ + -Wextra \ + -Wconversion \ + -Wno-sign-conversion \ + # + else ifneq (,$(USING_GCC)) + CXXFLAGS += \ + -Werror \ + -Wall \ + -Wextra \ + -pedantic \ + -Wcast-align \ + -Wcast-qual \ + -Wconversion \ + -Wdisabled-optimization \ + -Woverloaded-virtual \ + # + endif +endif + +LIBS := \ + -ldl -lm -lz \ + -L$(ILMBASE_LIB_DIR) $(HALF_LIB) \ + -L$(TBB_LIB_DIR) $(TBB_LIB) \ + -L$(BOOST_LIB_DIR) $(BOOST_LIB) \ +# +LIBS_RPATH := \ + -ldl -lm -lz \ + -Wl,-rpath,$(ILMBASE_LIB_DIR) -L$(ILMBASE_LIB_DIR) $(HALF_LIB) \ + -Wl,-rpath,$(TBB_LIB_DIR) -L$(TBB_LIB_DIR) $(TBB_LIB) \ + -Wl,-rpath,$(BOOST_LIB_DIR) -L$(BOOST_LIB_DIR) $(BOOST_LIB) \ +# +ifeq (yes,$(has_blosc)) + LIBS += -L$(BLOSC_LIB_DIR) $(BLOSC_LIB) + LIBS_RPATH += -Wl,-rpath,$(BLOSC_LIB_DIR) -L$(BLOSC_LIB_DIR) $(BLOSC_LIB) +endif +ifeq (yes,$(has_log4cplus)) + LIBS += -L$(LOG4CPLUS_LIB_DIR) $(LOG4CPLUS_LIB) + LIBS_RPATH += -Wl,-rpath,$(LOG4CPLUS_LIB_DIR) -L$(LOG4CPLUS_LIB_DIR) $(LOG4CPLUS_LIB) +endif +ifneq (,$(strip $(CONCURRENT_MALLOC_LIB))) +ifneq (,$(strip $(CONCURRENT_MALLOC_LIB_DIR))) + LIBS_RPATH += -Wl,-rpath,$(CONCURRENT_MALLOC_LIB_DIR) -L$(CONCURRENT_MALLOC_LIB_DIR) +endif +endif +ifdef LINUX + LIBS += -lrt + LIBS_RPATH += -lrt +endif + +INCLUDE_NAMES := \ + Exceptions.h \ + Grid.h \ + io/Archive.h \ + io/Compression.h \ + io/DelayedLoadMetadata.h \ + io/File.h \ + io/GridDescriptor.h \ + io/io.h \ + io/Queue.h \ + io/Stream.h \ + io/TempFile.h \ + math/BBox.h \ + math/ConjGradient.h \ + math/Coord.h \ + math/DDA.h \ + math/FiniteDifference.h \ + math/LegacyFrustum.h \ + math/Maps.h \ + math/Mat.h \ + math/Mat3.h \ + math/Mat4.h \ + math/Math.h \ + math/Operators.h \ + math/Proximity.h \ + math/QuantizedUnitVec.h \ + math/Quat.h \ + math/Ray.h \ + math/Stats.h \ + math/Stencils.h \ + math/Transform.h\ + math/Tuple.h\ + math/Vec2.h \ + math/Vec3.h \ + math/Vec4.h \ + Metadata.h \ + MetaMap.h \ + openvdb.h \ + Platform.h \ + PlatformConfig.h \ + points/AttributeArray.h \ + points/AttributeArrayString.h \ + points/AttributeGroup.h \ + points/AttributeSet.h \ + points/IndexFilter.h \ + points/IndexIterator.h \ + points/PointAdvect.h \ + points/PointAttribute.h \ + points/PointConversion.h \ + points/PointCount.h \ + points/PointDataGrid.h \ + points/PointDelete.h \ + points/PointGroup.h \ + points/PointMask.h \ + points/PointMove.h \ + points/PointSample.h \ + points/PointScatter.h \ + points/StreamCompression.h \ + tools/ChangeBackground.h \ + tools/Clip.h \ + tools/Composite.h \ + tools/Dense.h \ + tools/DenseSparseTools.h \ + tools/Diagnostics.h \ + tools/Filter.h \ + tools/FindActiveValues.h \ + tools/GridOperators.h \ + tools/GridTransformer.h \ + tools/Interpolation.h \ + tools/LevelSetAdvect.h \ + tools/LevelSetFilter.h \ + tools/LevelSetFracture.h \ + tools/LevelSetMeasure.h \ + tools/LevelSetMorph.h \ + tools/LevelSetPlatonic.h \ + tools/LevelSetRebuild.h \ + tools/LevelSetSphere.h \ + tools/LevelSetTracker.h \ + tools/LevelSetUtil.h \ + tools/Mask.h \ + tools/MeshToVolume.h \ + tools/Morphology.h \ + tools/MultiResGrid.h \ + tools/ParticleAtlas.h \ + tools/ParticlesToLevelSet.h \ + tools/PointAdvect.h \ + tools/PointIndexGrid.h \ + tools/PointPartitioner.h \ + tools/PointScatter.h \ + tools/PointsToMask.h \ + tools/PoissonSolver.h \ + tools/PotentialFlow.h \ + tools/Prune.h \ + tools/RayIntersector.h \ + tools/RayTracer.h \ + tools/SignedFloodFill.h \ + tools/Statistics.h \ + tools/TopologyToLevelSet.h \ + tools/ValueTransformer.h \ + tools/VectorTransformer.h \ + tools/VelocityFields.h \ + tools/VolumeAdvect.h \ + tools/VolumeToMesh.h \ + tools/VolumeToSpheres.h \ + tree/InternalNode.h \ + tree/Iterator.h \ + tree/LeafBuffer.h \ + tree/LeafManager.h \ + tree/LeafNode.h \ + tree/LeafNodeBool.h \ + tree/LeafNodeMask.h \ + tree/NodeManager.h \ + tree/NodeUnion.h \ + tree/RootNode.h \ + tree/Tree.h \ + tree/TreeIterator.h \ + tree/ValueAccessor.h \ + Types.h \ + util/CpuTimer.h \ + util/Formats.h \ + util/logging.h \ + util/MapsUtil.h \ + util/Name.h \ + util/NodeMasks.h \ + util/NullInterrupter.h \ + util/PagedArray.h \ + util/Util.h \ + version.h \ +# + +SRC_NAMES := \ + Grid.cc \ + io/Archive.cc \ + io/Compression.cc \ + io/DelayedLoadMetadata.cc \ + io/File.cc \ + io/GridDescriptor.cc \ + io/Queue.cc \ + io/Stream.cc \ + io/TempFile.cc \ + math/Maps.cc \ + math/Proximity.cc \ + math/QuantizedUnitVec.cc \ + math/Transform.cc \ + Metadata.cc \ + MetaMap.cc \ + openvdb.cc \ + Platform.cc \ + points/AttributeArray.cc \ + points/AttributeArrayString.cc \ + points/AttributeGroup.cc \ + points/AttributeSet.cc \ + points/points.cc \ + points/StreamCompression.cc \ + util/Formats.cc \ + util/Util.cc \ +# + +UNITTEST_INCLUDE_NAMES := \ + unittest/util.h \ +# + +UNITTEST_SRC_NAMES := \ + unittest/main.cc \ + unittest/TestAttributeArray.cc \ + unittest/TestAttributeArrayString.cc \ + unittest/TestAttributeSet.cc \ + unittest/TestAttributeGroup.cc \ + unittest/TestBBox.cc \ + unittest/TestConjGradient.cc \ + unittest/TestCoord.cc \ + unittest/TestCpt.cc \ + unittest/TestCurl.cc \ + unittest/TestDelayedLoadMetadata.cc \ + unittest/TestDense.cc \ + unittest/TestDenseSparseTools.cc \ + unittest/TestDiagnostics.cc \ + unittest/TestDivergence.cc \ + unittest/TestDoubleMetadata.cc \ + unittest/TestExceptions.cc \ + unittest/TestFile.cc \ + unittest/TestFindActiveValues.cc \ + unittest/TestFloatMetadata.cc \ + unittest/TestGradient.cc \ + unittest/TestGrid.cc \ + unittest/TestGridBbox.cc \ + unittest/TestGridDescriptor.cc \ + unittest/TestGridIO.cc \ + unittest/TestGridTransformer.cc \ + unittest/TestIndexFilter.cc \ + unittest/TestIndexIterator.cc \ + unittest/TestInit.cc \ + unittest/TestInt32Metadata.cc \ + unittest/TestInt64Metadata.cc \ + unittest/TestInternalOrigin.cc \ + unittest/TestLaplacian.cc \ + unittest/TestLeaf.cc \ + unittest/TestLeafBool.cc \ + unittest/TestLeafManager.cc \ + unittest/TestLeafMask.cc \ + unittest/TestLeafIO.cc \ + unittest/TestLeafOrigin.cc \ + unittest/TestLevelSetRayIntersector.cc \ + unittest/TestLevelSetUtil.cc \ + unittest/TestLinearInterp.cc \ + unittest/TestMaps.cc \ + unittest/TestMat4Metadata.cc \ + unittest/TestMath.cc \ + unittest/TestMeanCurvature.cc \ + unittest/TestMeshToVolume.cc \ + unittest/TestMetadata.cc \ + unittest/TestMetadataIO.cc \ + unittest/TestMetaMap.cc \ + unittest/TestMultiResGrid.cc \ + unittest/TestName.cc \ + unittest/TestNodeIterator.cc \ + unittest/TestNodeManager.cc \ + unittest/TestNodeMask.cc \ + unittest/TestParticleAtlas.cc \ + unittest/TestParticlesToLevelSet.cc \ + unittest/TestPointAdvect.cc \ + unittest/TestPointAttribute.cc \ + unittest/TestPointConversion.cc \ + unittest/TestPointCount.cc \ + unittest/TestPointDataLeaf.cc \ + unittest/TestPointDelete.cc \ + unittest/TestPointGroup.cc \ + unittest/TestPointIndexGrid.cc \ + unittest/TestPointMask.cc \ + unittest/TestPointMove.cc \ + unittest/TestPointPartitioner.cc \ + unittest/TestPointSample.cc \ + unittest/TestPointScatter.cc \ + unittest/TestPointsToMask.cc \ + unittest/TestPoissonSolver.cc \ + unittest/TestPotentialFlow.cc \ + unittest/TestPrePostAPI.cc \ + unittest/TestQuadraticInterp.cc \ + unittest/TestQuantizedUnitVec.cc \ + unittest/TestQuat.cc \ + unittest/TestRay.cc \ + unittest/TestStats.cc \ + unittest/TestStream.cc \ + unittest/TestStreamCompression.cc \ + unittest/TestStringMetadata.cc \ + unittest/TestTools.cc \ + unittest/TestTopologyToLevelSet.cc \ + unittest/TestTransform.cc \ + unittest/TestTree.cc \ + unittest/TestTreeCombine.cc \ + unittest/TestTreeGetSetValues.cc \ + unittest/TestTreeIterators.cc \ + unittest/TestTreeVisitor.cc \ + unittest/TestTypes.cc \ + unittest/TestUtil.cc \ + unittest/TestValueAccessor.cc \ + unittest/TestVec2Metadata.cc \ + unittest/TestVec3Metadata.cc \ + unittest/TestVolumeRayIntersector.cc \ + unittest/TestVolumeToMesh.cc \ + unittest/TestVolumeToSpheres.cc \ +# + +DOC_FILES := \ + ../doc/changes.txt \ + ../doc/codingstyle.txt \ + ../doc/doc.txt \ + ../doc/examplecode.txt \ + ../doc/faq.txt \ + ../doc/math.txt \ + ../doc/points.txt \ + ../doc/python.txt +DOC_INDEX := ../doc/html/index.html +DOC_PDF := ../doc/latex/refman.pdf + +LIBVIEWER_INCLUDE_NAMES := \ + viewer/Camera.h \ + viewer/ClipBox.h \ + viewer/Font.h \ + viewer/RenderModules.h \ + viewer/Viewer.h \ +# +# Used for "install" target only +LIBVIEWER_PUBLIC_INCLUDE_NAMES := \ + viewer/Viewer.h \ +# +LIBVIEWER_SRC_NAMES := \ + viewer/Camera.cc \ + viewer/ClipBox.cc \ + viewer/Font.cc \ + viewer/RenderModules.cc \ + viewer/Viewer.cc \ +# +ifdef MBSD + LIBVIEWER_FLAGS := -framework Cocoa -framework OpenGL -framework IOKit +else + LIBVIEWER_FLAGS := -lGL -lGLU +endif + + +CMD_INCLUDE_NAMES := \ +# + +CMD_SRC_NAMES := \ + cmd/openvdb_lod.cc \ + cmd/openvdb_print.cc \ + cmd/openvdb_render.cc \ + cmd/openvdb_view.cc \ +# + + +PYTHON_INCLUDE_NAMES := \ + python/pyopenvdb.h \ + python/pyutil.h \ + python/pyAccessor.h \ + python/pyGrid.h \ +# +# Used for "install" target only +PYTHON_PUBLIC_INCLUDE_NAMES := \ + python/pyopenvdb.h \ +# +PYTHON_SRC_NAMES := \ + python/pyFloatGrid.cc \ + python/pyIntGrid.cc \ + python/pyMetadata.cc \ + python/pyOpenVDBModule.cc \ + python/pyPointGrid.cc \ + python/pyTransform.cc \ + python/pyVec3Grid.cc \ +# +PYCXXFLAGS := -fPIC -isystem python -isystem $(PYTHON_INCL_DIR) -isystem $(PYCONFIG_INCL_DIR) +ifneq (,$(strip $(NUMPY_INCL_DIR))) +PYCXXFLAGS += -isystem $(NUMPY_INCL_DIR) -DPY_OPENVDB_USE_NUMPY +endif +ifneq (no,$(strip $(PYTHON_WRAP_ALL_GRID_TYPES))) +PYCXXFLAGS += -DPY_OPENVDB_WRAP_ALL_GRID_TYPES +endif + + +HEADER_SUBDIRS := $(dir $(INCLUDE_NAMES)) + +ALL_INCLUDE_FILES := \ + $(INCLUDE_NAMES) \ + $(UNITTEST_INCLUDE_NAMES) \ + $(CMD_INCLUDE_NAMES) \ + $(LIBVIEWER_INCLUDE_NAMES) \ + $(PYTHON_INCLUDE_NAMES) \ +# +SRC_FILES := \ + $(SRC_NAMES) \ + $(UNITTEST_SRC_NAMES) \ + $(CMD_SRC_NAMES) \ + $(LIBVIEWER_SRC_NAMES) \ + $(PYTHON_SRC_NAMES) \ +# +ALL_SRC_FILES := $(SRC_FILES) + +OBJ_NAMES := $(SRC_NAMES:.cc=.o) +UNITTEST_OBJ_NAMES := $(UNITTEST_SRC_NAMES:.cc=.o) +LIBVIEWER_OBJ_NAMES := $(LIBVIEWER_SRC_NAMES:.cc=.o) +PYTHON_OBJ_NAMES := $(PYTHON_SRC_NAMES:.cc=.o) + +LIB_MAJOR_VERSION=$(shell grep 'define OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER ' \ + version.h | sed 's/[^0-9]*//g') +LIB_MINOR_VERSION=$(shell grep 'define OPENVDB_LIBRARY_MINOR_VERSION_NUMBER ' \ + version.h | sed 's/[^0-9]*//g') +LIB_PATCH_VERSION=$(shell grep 'define OPENVDB_LIBRARY_PATCH_VERSION_NUMBER ' \ + version.h | sed 's/[^0-9]*//g') + +LIB_VERSION=$(LIB_MAJOR_VERSION).$(LIB_MINOR_VERSION).$(LIB_PATCH_VERSION) +SO_VERSION=$(LIB_MAJOR_VERSION).$(LIB_MINOR_VERSION) + +LIBOPENVDB_NAME=libopenvdb +LIBOPENVDB_STATIC := $(LIBOPENVDB_NAME).a +ifndef MBSD +LIBOPENVDB_SHARED_NAME := $(LIBOPENVDB_NAME).so +LIBOPENVDB_SHARED := $(LIBOPENVDB_NAME).so.$(LIB_VERSION) +LIBOPENVDB_SONAME := $(LIBOPENVDB_NAME).so.$(SO_VERSION) +LIBOPENVDB_SONAME_FLAGS := -Wl,-soname,$(LIBOPENVDB_SONAME) +else +LIBOPENVDB_SHARED_NAME := $(LIBOPENVDB_NAME).dylib +LIBOPENVDB_SHARED := $(LIBOPENVDB_NAME).$(LIB_VERSION).dylib +LIBOPENVDB_SONAME := $(LIBOPENVDB_NAME).$(SO_VERSION).dylib +LIBOPENVDB_SONAME_FLAGS := -Wl,-install_name,$(DESTDIR_LIB_DIR)/$(LIBOPENVDB_SONAME) +endif + +# TODO: libopenvdb_viewer is currently built into vdb_view and is not installed separately. +LIBVIEWER_NAME=libopenvdb_viewer +LIBVIEWER_STATIC := $(LIBVIEWER_NAME).a +ifndef MBSD +LIBVIEWER_SHARED_NAME := $(LIBVIEWER_NAME).so +LIBVIEWER_SHARED := $(LIBVIEWER_NAME).so.$(LIB_VERSION) +LIBVIEWER_SONAME := $(LIBVIEWER_NAME).so.$(SO_VERSION) +LIBVIEWER_SONAME_FLAGS := -Wl,-soname,$(LIBVIEWER_SONAME) +else +LIBVIEWER_SHARED_NAME := $(LIBVIEWER_NAME).dylib +LIBVIEWER_SHARED := $(LIBVIEWER_NAME).$(LIB_VERSION).dylib +LIBVIEWER_SONAME := $(LIBVIEWER_NAME).$(SO_VERSION).dylib +LIBVIEWER_SONAME_FLAGS := -Wl,-install_name,$(DESTDIR_LIB_DIR)/$(LIBVIEWER_SONAME) +endif + +PYTHON_MODULE_NAME=pyopenvdb +PYTHON_MODULE := $(PYTHON_MODULE_NAME).so +PYTHON_SONAME := $(PYTHON_MODULE_NAME).so.$(SO_VERSION) +ifndef MBSD +PYTHON_SONAME_FLAGS := -Wl,-soname,$(PYTHON_SONAME) +endif + +ifeq (no,$(strip $(shared))) + LIBOPENVDB := $(LIBOPENVDB_STATIC) + LIBVIEWER := $(LIBVIEWER_STATIC) +else + LIBOPENVDB := $(LIBOPENVDB_SHARED) + LIBVIEWER := $(LIBVIEWER_SHARED) + LIBOPENVDB_RPATH := -Wl,-rpath,$(DESTDIR_LIB_DIR) +endif # shared + +DEPEND := dependencies + +# Get the list of dependencies that are newer than the current target, +# but limit the list to at most three entries. +list_deps = $(if $(wordlist 4,5,$(?F)),$(firstword $(?F)) and others,$(wordlist 1,3,$(?F))) + +ALL_PRODUCTS := \ + $(LIBOPENVDB) \ + vdb_test \ + vdb_lod \ + vdb_print \ + vdb_render \ + vdb_view \ + $(DEPEND) \ + $(LIBOPENVDB_SHARED_NAME) \ + $(LIBOPENVDB_SONAME) \ + $(PYTHON_MODULE) \ +# + +.SUFFIXES: .o .cc + +.PHONY: all clean depend doc header_test install lib pdfdoc pydoc pytest python test viewerlib + +.cc.o: + @echo "Building $@ because of $(call list_deps)" + $(CXX) -c $(CXXFLAGS) -fPIC -o $@ $< + +all: lib python vdb_lod vdb_print vdb_render vdb_test depend + +$(OBJ_NAMES): %.o: %.cc + @echo "Building $@ because of $(call list_deps)" + $(CXX) -c -DOPENVDB_PRIVATE $(CXXFLAGS) -fPIC -o $@ $< + +ifneq (no,$(strip $(shared))) + +# Build shared library +lib: $(LIBOPENVDB_SHARED_NAME) $(LIBOPENVDB_SONAME) + +$(LIBOPENVDB_SHARED_NAME): $(LIBOPENVDB_SHARED) + ln -f -s $< $@ + +$(LIBOPENVDB_SONAME): $(LIBOPENVDB_SHARED) + ln -f -s $< $@ + +$(LIBOPENVDB_SHARED): $(OBJ_NAMES) + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -shared -o $@ $^ $(LIBS_RPATH) $(LIBOPENVDB_SONAME_FLAGS) + +else + +# Build static library +lib: $(LIBOPENVDB) + +$(LIBOPENVDB_STATIC): $(OBJ_NAMES) + @echo "Building $@ because of $(list_deps)" + $(AR) cr $@ $^ + +endif # shared + + +$(DOC_INDEX): ../doc/doxygen-config $(INCLUDE_NAMES) $(SRC_NAMES) $(DOC_FILES) + @echo "Generating documentation because of $(list_deps)" + pushd ..; \ + echo 'OUTPUT_DIRECTORY=./doc' | cat ./doc/doxygen-config - | $(DOXYGEN) - $(QUIET); \ + popd > /dev/null + +$(DOC_PDF): ../doc/doxygen-config $(INCLUDE_NAMES) $(SRC_NAMES) $(DOC_FILES) + @echo "Generating documentation because of $(list_deps)" + pushd ..; \ + echo -e 'OUTPUT_DIRECTORY=./doc\nGENERATE_LATEX=YES\nGENERATE_HTML=NO' \ + | cat ./doc/doxygen-config - | $(DOXYGEN) - $(QUIET) \ + && cd ./doc/latex && make refman.pdf $(QUIET) \ + && echo 'Created doc/latex/refman.pdf'; \ + popd > /dev/null + +ifneq (,$(strip $(DOXYGEN))) +doc: $(DOC_INDEX) +pdfdoc: $(DOC_PDF) +else +doc: + @echo "$@"': $$DOXYGEN is undefined' +pdfdoc: + @echo "$@"': $$DOXYGEN is undefined' +endif + +vdb_lod: $(LIBOPENVDB) cmd/openvdb_lod.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -o $@ cmd/openvdb_lod.cc -I . \ + $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBS_RPATH) $(CONCURRENT_MALLOC_LIB) + +vdb_print: $(LIBOPENVDB) cmd/openvdb_print.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -o $@ cmd/openvdb_print.cc -I . \ + $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBS_RPATH) $(CONCURRENT_MALLOC_LIB) + +vdb_render: $(LIBOPENVDB) cmd/openvdb_render.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -o $@ cmd/openvdb_render.cc -I . \ + -isystem $(EXR_INCL_DIR) -isystem $(ILMBASE_INCL_DIR) \ + -Wl,-rpath,$(EXR_LIB_DIR) -L$(EXR_LIB_DIR) $(EXR_LIB) \ + -Wl,-rpath,$(ILMBASE_LIB_DIR) -L$(ILMBASE_LIB_DIR) $(ILMBASE_LIB) \ + $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBS_RPATH) $(CONCURRENT_MALLOC_LIB) + +# Create an openvdb_viewer/ symlink to the viewer/ subdirectory, +# to mirror the DWA directory structure. +openvdb_viewer: + ln -f -s viewer openvdb_viewer + +ifneq (yes,$(has_glfw)) +vdb_view: + @echo "$@"': GLFW is unavailable' +else +$(LIBVIEWER_INCLUDE_NAMES): openvdb_viewer + +$(LIBVIEWER_OBJ_NAMES): $(LIBVIEWER_INCLUDE_NAMES) +$(LIBVIEWER_OBJ_NAMES): %.o: %.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) -c $(CXXFLAGS) -I . -isystem $(GLFW_INCL_DIR) -DGL_GLEXT_PROTOTYPES=1 -fPIC -o $@ $< + +vdb_view: $(LIBOPENVDB) $(LIBVIEWER_OBJ_NAMES) cmd/openvdb_view.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -o $@ cmd/openvdb_view.cc $(LIBVIEWER_OBJ_NAMES) \ + -I . $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBVIEWER_FLAGS) $(LIBS_RPATH) $(BOOST_THREAD_LIB) $(CONCURRENT_MALLOC_LIB) \ + -Wl,-rpath,$(GLFW_LIB_DIR) -L$(GLFW_LIB_DIR) $(GLFW_LIB) +endif + + +# Build the Python module +$(PYTHON_OBJ_NAMES): $(PYTHON_INCLUDE_NAMES) +$(PYTHON_OBJ_NAMES): %.o: %.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) -c $(CXXFLAGS) -I . $(PYCXXFLAGS) -o $@ $< +$(PYTHON_MODULE): $(LIBOPENVDB) $(PYTHON_OBJ_NAMES) + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) $(PYCXXFLAGS) -shared $(PYTHON_SONAME_FLAGS) -o $@ $(PYTHON_OBJ_NAMES) \ + -Wl,-rpath,$(PYTHON_LIB_DIR) -L$(PYTHON_LIB_DIR) $(PYTHON_LIB) \ + -Wl,-rpath,$(BOOST_PYTHON_LIB_DIR) -L$(BOOST_PYTHON_LIB_DIR) $(BOOST_PYTHON_LIB) \ + $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBS_RPATH) $(CONCURRENT_MALLOC_LIB) + +ifeq (yes,$(has_python)) +ifneq (,$(strip $(EPYDOC))) +pydoc: $(PYTHON_MODULE) $(LIBOPENVDB_SONAME) + @echo "Generating Python module documentation because of $(list_deps)" + pydocdir=../doc/html/python; \ + mkdir -p $${pydocdir}; \ + echo "Created $${pydocdir}"; \ + export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$(CURDIR); \ + export PYTHONPATH=${PYTHONPATH}:$(CURDIR); \ + $(EPYDOC) --html -o $${pydocdir} $(PYTHON_MODULE_NAME) $(QUIET) +else +pydoc: + @echo "$@"': $$EPYDOC is undefined' +endif + +pytest: $(PYTHON_MODULE) $(LIBOPENVDB_SONAME) + @echo "Testing Python module $(PYTHON_MODULE)" + export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$(CURDIR); \ + export PYTHONPATH=${PYTHONPATH}:$(CURDIR); \ + python$(PYTHON_VERSION) ./python/test/TestOpenVDB.py $(QUIET_TEST) + +python: $(PYTHON_MODULE) +else +python pytest pydoc: + @echo "$@"': Python is unavailable' +endif + + +$(UNITTEST_OBJ_NAMES): %.o: %.cc + @echo "Building $@ because of $(list_deps)" + $(CXX) -c $(CXXFLAGS) -isystem $(CPPUNIT_INCL_DIR) -fPIC -o $@ $< + +ifneq (,$(strip $(CPPUNIT_INCL_DIR))) +vdb_test: $(LIBOPENVDB) $(UNITTEST_OBJ_NAMES) + @echo "Building $@ because of $(list_deps)" + $(CXX) $(CXXFLAGS) -o $@ $(UNITTEST_OBJ_NAMES) \ + $(LIBOPENVDB_RPATH) -L$(CURDIR) $(LIBOPENVDB) \ + $(LIBS_RPATH) $(CONCURRENT_MALLOC_LIB) \ + -Wl,-rpath,$(CPPUNIT_LIB_DIR) -L$(CPPUNIT_LIB_DIR) $(CPPUNIT_LIB) + +test: lib vdb_test + @echo "Testing $(LIBOPENVDB_NAME)" + export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$(CURDIR); ./vdb_test $(QUIET_TEST) +else +vdb_test: + @echo "$@"': $$(CPPUNIT_INCL_DIR) is undefined' +test: + @echo "$@"': $$(CPPUNIT_INCL_DIR) is undefined' +endif + +install_lib: lib + mkdir -p $(DESTDIR)/include/openvdb + @echo "Created $(DESTDIR)/include/openvdb" + pushd $(DESTDIR)/include/openvdb > /dev/null; \ + mkdir -p $(HEADER_SUBDIRS); popd > /dev/null + for f in $(INCLUDE_NAMES); \ + do cp -f $$f $(DESTDIR)/include/openvdb/$$f; done + @echo "Copied header files to $(DESTDIR)/include" + @# + mkdir -p $(DESTDIR_LIB_DIR) + @echo "Created $(DESTDIR_LIB_DIR)" + cp -f $(LIBOPENVDB) $(DESTDIR_LIB_DIR) + pushd $(DESTDIR_LIB_DIR) > /dev/null; \ + if [ -f $(LIBOPENVDB_SHARED) ]; then \ + ln -f -s $(LIBOPENVDB_SHARED) $(LIBOPENVDB_SHARED_NAME); \ + ln -f -s $(LIBOPENVDB_SHARED) $(LIBOPENVDB_SONAME); \ + fi; \ + popd > /dev/null + @echo "Copied libopenvdb to $(DESTDIR_LIB_DIR)" + +install: install_lib python vdb_lod vdb_print vdb_render vdb_view doc pydoc + if [ -f $(LIBVIEWER) ]; \ + then \ + mkdir -p $(DESTDIR)/include/openvdb_viewer; \ + echo "Created $(DESTDIR)/include/openvdb_viewer"; \ + cp -f $(LIBVIEWER_PUBLIC_INCLUDE_NAMES) $(DESTDIR)/include/openvdb_viewer/; \ + @echo "Copied vdb_view header files to $(DESTDIR)/include" \ + cp -f $(LIBVIEWER) $(DESTDIR_LIB_DIR); \ + pushd $(DESTDIR_LIB_DIR) > /dev/null; \ + if [ -f $(LIBVIEWER_SHARED) ]; then \ + ln -f -s $(LIBVIEWER_SHARED) $(LIBVIEWER_SHARED_NAME); fi; \ + popd > /dev/null; \ + @echo "Copied libopenvdb_viewer to $(DESTDIR_LIB_DIR)"; \ + fi + @# + if [ -f $(PYTHON_MODULE) ]; \ + then \ + installdir=$(DESTDIR)/python/include/python$(PYTHON_VERSION); \ + mkdir -p $${installdir}; \ + echo "Created $${installdir}"; \ + cp -f $(PYTHON_PUBLIC_INCLUDE_NAMES) $${installdir}/; \ + echo "Copied Python header files to $${installdir}"; \ + installdir=$(DESTDIR)/python/lib/python$(PYTHON_VERSION); \ + mkdir -p $${installdir}; \ + echo "Created $${installdir}"; \ + cp -f $(PYTHON_MODULE) $${installdir}/; \ + pushd $${installdir} > /dev/null; \ + ln -f -s $(PYTHON_MODULE) $(PYTHON_SONAME); \ + popd > /dev/null; \ + echo "Copied Python module to $${installdir}"; \ + fi + @# + mkdir -p $(DESTDIR)/bin + @echo "Created $(DESTDIR)/bin/" + cp -f vdb_lod $(DESTDIR)/bin + @echo "Copied vdb_lod to $(DESTDIR)/bin/" + cp -f vdb_print $(DESTDIR)/bin + @echo "Copied vdb_print to $(DESTDIR)/bin/" + cp -f vdb_render $(DESTDIR)/bin + @echo "Copied vdb_render to $(DESTDIR)/bin/" + if [ -f vdb_view ]; \ + then \ + cp -f vdb_view $(DESTDIR)/bin; \ + echo "Copied vdb_view to $(DESTDIR)/bin/"; \ + fi + @# + if [ -d ../doc/html ]; \ + then \ + mkdir -p $(DESTDIR)/share/doc/openvdb; \ + echo "Created $(DESTDIR)/share/doc/openvdb/"; \ + cp -r -f ../doc/html $(DESTDIR)/share/doc/openvdb; \ + echo "Copied documentation to $(DESTDIR)/share/doc/openvdb/"; \ + fi + +# TODO: This accumulates all source file dependencies into a single file +# containing a rule for each *.o file. Consider generating a separate +# dependency file for each *.o file instead. +$(DEPEND): $(ALL_INCLUDE_FILES) $(ALL_SRC_FILES) openvdb_viewer + @echo "Generating dependencies because of $(list_deps)" + $(RM) $(DEPEND) + for f in $(SRC_NAMES) $(CMD_SRC_NAMES); \ + do $(CXX) $(CXXFLAGS) -O0 \ + -MM $$f -MT `echo $$f | sed 's%\.[^.]*%.o%'` >> $(DEPEND); \ + done + if [ -d "$(CPPUNIT_INCL_DIR)" ]; \ + then \ + for f in $(UNITTEST_SRC_NAMES); \ + do $(CXX) $(CXXFLAGS) -O0 \ + -MM $$f -MT `echo $$f | sed 's%\.[^.]*%.o%'` \ + -isystem $(CPPUNIT_INCL_DIR) >> $(DEPEND); \ + done; \ + fi + +depend: $(DEPEND) + +# Compile an implicit translation unit for each header to identify any indirect includes +HEADER_TEST_CXXFLAGS := $(CXXFLAGS) +HEADER_TEST_FILES := $(addprefix header_test-,$(INCLUDE_NAMES) $(CMD_INCLUDE_NAMES)) +ifeq (yes,$(has_cppunit)) + HEADER_TEST_FILES += $(addprefix header_test-,$(UNITTEST_INCLUDE_NAMES)) + HEADER_TEST_CXXFLAGS += -isystem $(CPPUNIT_INCL_DIR) +endif +ifeq (yes,$(has_glfw)) + HEADER_TEST_FILES += $(addprefix header_test-,$(LIBVIEWER_INCLUDE_NAMES)) + HEADER_TEST_CXXFLAGS += -isystem $(GLFW_INCL_DIR) -DGL_GLEXT_PROTOTYPES=1 +endif +ifeq (yes,$(has_python)) + HEADER_TEST_FILES += $(addprefix header_test-,$(PYTHON_INCLUDE_NAMES)) + HEADER_TEST_CXXFLAGS += $(PYCXXFLAGS) +endif +$(HEADER_TEST_FILES): header_test-%: + echo "#include \"$*\"" | $(CXX) -c -x c++ $(HEADER_TEST_CXXFLAGS) -fPIC -o /dev/null - +echo_header_test: + @echo "Checking for missing or indirectly included headers" +header_test: echo_header_test $(HEADER_TEST_FILES) + +clean: + $(RM) $(OBJ_NAMES) $(ALL_PRODUCTS) $(DEPEND) + $(RM) $(LIBOPENVDB_STATIC) + $(RM) $(LIBOPENVDB_SHARED) + $(RM) $(LIBVIEWER_OBJ_NAMES) + $(RM) $(PYTHON_OBJ_NAMES) + $(RM) $(UNITTEST_OBJ_NAMES) + $(RM) -r ../doc/html ../doc/latex + +ifneq (,$(strip $(wildcard $(DEPEND)))) + include $(DEPEND) +endif diff --git a/openvdb/MetaMap.cc b/openvdb/MetaMap.cc new file mode 100644 index 00000000..d0396af7 --- /dev/null +++ b/openvdb/MetaMap.cc @@ -0,0 +1,209 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "MetaMap.h" + +#include "util/logging.h" +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +MetaMap::MetaMap(const MetaMap& other) +{ + this->insertMeta(other); +} + + +MetaMap::Ptr +MetaMap::copyMeta() const +{ + MetaMap::Ptr ret(new MetaMap); + ret->mMeta = this->mMeta; + return ret; +} + + +MetaMap::Ptr +MetaMap::deepCopyMeta() const +{ + return MetaMap::Ptr(new MetaMap(*this)); +} + + +MetaMap& +MetaMap::operator=(const MetaMap& other) +{ + if (&other != this) { + this->clearMetadata(); + // Insert all metadata into this map. + ConstMetaIterator iter = other.beginMeta(); + for ( ; iter != other.endMeta(); ++iter) { + this->insertMeta(iter->first, *(iter->second)); + } + } + return *this; +} + + +void +MetaMap::readMeta(std::istream &is) +{ + // Clear out the current metamap if need be. + this->clearMetadata(); + + // Read in the number of metadata items. + Index32 count = 0; + is.read(reinterpret_cast(&count), sizeof(Index32)); + + // Read in each metadata. + for (Index32 i = 0; i < count; ++i) { + // Read in the name. + Name name = readString(is); + + // Read in the metadata typename. + Name typeName = readString(is); + + // Read in the metadata value and add it to the map. + if (Metadata::isRegisteredType(typeName)) { + Metadata::Ptr metadata = Metadata::createMetadata(typeName); + metadata->read(is); + insertMeta(name, *metadata); + } else { +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + UnknownMetadata metadata(typeName); + metadata.read(is); // read raw bytes into an array + // only add unknown metadata to the grid if not temporary, + // denoted by a double underscore prefix (such as __metadata) + bool temporary = typeName.compare(0, 2, "__") == 0; + if (!temporary) { + insertMeta(name, metadata); + } +#else + OPENVDB_LOG_WARN("cannot read metadata \"" << name + << "\" of unregistered type \"" << typeName << "\""); + UnknownMetadata metadata; + metadata.read(is); +#endif + } + } +} + + +void +MetaMap::writeMeta(std::ostream &os) const +{ + // Write out the number of metadata items we have in the map. Note that we + // save as Index32 to save a 32-bit number. Using size_t would be platform + // dependent. + Index32 count = static_cast(metaCount()); + os.write(reinterpret_cast(&count), sizeof(Index32)); + + // Iterate through each metadata and write it out. + for (ConstMetaIterator iter = beginMeta(); iter != endMeta(); ++iter) { + // Write the name of the metadata. + writeString(os, iter->first); + + // Write the type name of the metadata. + writeString(os, iter->second->typeName()); + + // Write out the metadata value. + iter->second->write(os); + } +} + + +void +MetaMap::insertMeta(const Name &name, const Metadata &m) +{ + if (name.size() == 0) + OPENVDB_THROW(ValueError, "Metadata name cannot be an empty string"); + + // See if the value already exists, if so then replace the existing one. + MetaIterator iter = mMeta.find(name); + + if (iter == mMeta.end()) { + // Create a copy of the metadata and store it in the map + Metadata::Ptr tmp = m.copy(); + mMeta[name] = tmp; + } else { + if (iter->second->typeName() != m.typeName()) { + std::ostringstream ostr; + ostr << "Cannot assign value of type " + << m.typeName() << " to metadata attribute " << name + << " of " << "type " << iter->second->typeName(); + OPENVDB_THROW(TypeError, ostr.str()); + } + // else + Metadata::Ptr tmp = m.copy(); + iter->second = tmp; + } +} + + +void +MetaMap::insertMeta(const MetaMap& other) +{ + for (ConstMetaIterator it = other.beginMeta(), end = other.endMeta(); it != end; ++it) { + if (it->second) this->insertMeta(it->first, *it->second); + } +} + + +void +MetaMap::removeMeta(const Name &name) +{ + MetaIterator iter = mMeta.find(name); + if (iter != mMeta.end()) { + mMeta.erase(iter); + } +} + + +bool +MetaMap::operator==(const MetaMap& other) const +{ + // Check if the two maps have the same number of elements. + if (this->mMeta.size() != other.mMeta.size()) return false; + // Iterate over the two maps in sorted order. + for (ConstMetaIterator it = beginMeta(), otherIt = other.beginMeta(), end = endMeta(); + it != end; ++it, ++otherIt) + { + // Check if the two keys match. + if (it->first != otherIt->first) return false; + // Check if the two values are either both null or both non-null pointers. + if (bool(it->second) != bool(otherIt->second)) return false; + // If the two values are both non-null, compare their contents. + if (it->second && otherIt->second && *it->second != *otherIt->second) return false; + } + return true; +} + + +std::string +MetaMap::str(const std::string& indent) const +{ + std::ostringstream ostr; + char sep[2] = { 0, 0 }; + for (ConstMetaIterator iter = beginMeta(); iter != endMeta(); ++iter) { + ostr << sep << indent << iter->first; + if (iter->second) { + const std::string value = iter->second->str(); + if (!value.empty()) ostr << ": " << value; + } + sep[0] = '\n'; + } + return ostr.str(); +} + +std::ostream& +operator<<(std::ostream& ostr, const MetaMap& metamap) +{ + ostr << metamap.str(); + return ostr; +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/MetaMap.h b/openvdb/MetaMap.h new file mode 100644 index 00000000..8f01acd7 --- /dev/null +++ b/openvdb/MetaMap.h @@ -0,0 +1,217 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED +#define OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED + +#include "Metadata.h" +#include "Types.h" +#include "Exceptions.h" +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// Container that maps names (strings) to values of arbitrary types +class OPENVDB_API MetaMap +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using MetadataMap = std::map; + using MetaIterator = MetadataMap::iterator; + using ConstMetaIterator = MetadataMap::const_iterator; + ///< @todo this should really iterate over a map of Metadata::ConstPtrs + + MetaMap() {} + MetaMap(const MetaMap& other); + virtual ~MetaMap() {} + + /// Return a copy of this map whose fields are shared with this map. + MetaMap::Ptr copyMeta() const; + /// Return a deep copy of this map that shares no data with this map. + MetaMap::Ptr deepCopyMeta() const; + + /// Assign a deep copy of another map to this map. + MetaMap& operator=(const MetaMap&); + + /// Unserialize metadata from the given stream. + void readMeta(std::istream&); + /// Serialize metadata to the given stream. + void writeMeta(std::ostream&) const; + + /// @brief Insert a new metadata field or overwrite the value of an existing field. + /// @details If a field with the given name doesn't already exist, add a new field. + /// Otherwise, if the new value's type is the same as the existing field's value type, + /// overwrite the existing value with new value. + /// @throw TypeError if a field with the given name already exists, but its value type + /// is not the same as the new value's + /// @throw ValueError if the given field name is empty. + void insertMeta(const Name&, const Metadata& value); + /// @brief Deep copy all of the metadata fields from the given map into this map. + /// @throw TypeError if any field in the given map has the same name as + /// but a different value type than one of this map's fields. + void insertMeta(const MetaMap&); + + /// Remove the given metadata field if it exists. + void removeMeta(const Name&); + + //@{ + /// @brief Return a pointer to the metadata with the given name. + /// If no such field exists, return a null pointer. + Metadata::Ptr operator[](const Name&); + Metadata::ConstPtr operator[](const Name&) const; + //@} + + //@{ + /// @brief Return a pointer to a TypedMetadata object of type @c T and with the given name. + /// If no such field exists or if there is a type mismatch, return a null pointer. + template typename T::Ptr getMetadata(const Name&); + template typename T::ConstPtr getMetadata(const Name&) const; + //@} + + /// @brief Return a reference to the value of type @c T stored in the given metadata field. + /// @throw LookupError if no field with the given name exists. + /// @throw TypeError if the given field is not of type @c T. + template T& metaValue(const Name&); + template const T& metaValue(const Name&) const; + + // Functions for iterating over the metadata + MetaIterator beginMeta() { return mMeta.begin(); } + MetaIterator endMeta() { return mMeta.end(); } + ConstMetaIterator beginMeta() const { return mMeta.begin(); } + ConstMetaIterator endMeta() const { return mMeta.end(); } + + void clearMetadata() { mMeta.clear(); } + + size_t metaCount() const { return mMeta.size(); } + + /// Return a string describing this metadata map. Prefix each line with @a indent. + std::string str(const std::string& indent = "") const; + + /// Return @c true if the given map is equivalent to this map. + bool operator==(const MetaMap& other) const; + /// Return @c true if the given map is different from this map. + bool operator!=(const MetaMap& other) const { return !(*this == other); } + +private: + /// @brief Return a pointer to TypedMetadata with the given template parameter. + /// @throw LookupError if no field with the given name is found. + /// @throw TypeError if the given field is not of type T. + template + typename TypedMetadata::Ptr getValidTypedMetadata(const Name&) const; + + MetadataMap mMeta; +}; + +/// Write a MetaMap to an output stream +std::ostream& operator<<(std::ostream&, const MetaMap&); + + +//////////////////////////////////////// + + +inline Metadata::Ptr +MetaMap::operator[](const Name& name) +{ + MetaIterator iter = mMeta.find(name); + return (iter == mMeta.end() ? Metadata::Ptr() : iter->second); +} + +inline Metadata::ConstPtr +MetaMap::operator[](const Name &name) const +{ + ConstMetaIterator iter = mMeta.find(name); + return (iter == mMeta.end() ? Metadata::Ptr() : iter->second); +} + + +//////////////////////////////////////// + + +template +inline typename T::Ptr +MetaMap::getMetadata(const Name &name) +{ + ConstMetaIterator iter = mMeta.find(name); + if (iter == mMeta.end()) return typename T::Ptr{}; + + // To ensure that we get valid conversion if the metadata pointers cross dso + // boundaries, we have to check the qualified typename and then do a static + // cast. This is slower than doing a dynamic_pointer_cast, but is safer when + // pointers cross dso boundaries. + if (iter->second->typeName() == T::staticTypeName()) { + return StaticPtrCast(iter->second); + } // else + return typename T::Ptr{}; +} + +template +inline typename T::ConstPtr +MetaMap::getMetadata(const Name &name) const +{ + ConstMetaIterator iter = mMeta.find(name); + if (iter == mMeta.end()) return typename T::ConstPtr{}; + + // To ensure that we get valid conversion if the metadata pointers cross dso + // boundaries, we have to check the qualified typename and then do a static + // cast. This is slower than doing a dynamic_pointer_cast, but is safer when + // pointers cross dso boundaries. + if (iter->second->typeName() == T::staticTypeName()) { + return StaticPtrCast(iter->second); + } // else + return typename T::ConstPtr{}; +} + + +//////////////////////////////////////// + + +template +inline typename TypedMetadata::Ptr +MetaMap::getValidTypedMetadata(const Name &name) const +{ + ConstMetaIterator iter = mMeta.find(name); + if (iter == mMeta.end()) OPENVDB_THROW(LookupError, "Cannot find metadata " << name); + + // To ensure that we get valid conversion if the metadata pointers cross dso + // boundaries, we have to check the qualified typename and then do a static + // cast. This is slower than doing a dynamic_pointer_cast, but is safer when + // pointers cross dso boundaries. + typename TypedMetadata::Ptr m; + if (iter->second->typeName() == TypedMetadata::staticTypeName()) { + m = StaticPtrCast, Metadata>(iter->second); + } + if (!m) OPENVDB_THROW(TypeError, "Invalid type for metadata " << name); + return m; +} + + +//////////////////////////////////////// + + +template +inline T& +MetaMap::metaValue(const Name &name) +{ + typename TypedMetadata::Ptr m = getValidTypedMetadata(name); + return m->value(); +} + + +template +inline const T& +MetaMap::metaValue(const Name &name) const +{ + typename TypedMetadata::Ptr m = getValidTypedMetadata(name); + return m->value(); +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED diff --git a/openvdb/Metadata.cc b/openvdb/Metadata.cc new file mode 100644 index 00000000..0634ccb6 --- /dev/null +++ b/openvdb/Metadata.cc @@ -0,0 +1,189 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Metadata.h" + +#include +#include // for std::min() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +using Mutex = tbb::mutex; +using Lock = Mutex::scoped_lock; + +using createMetadata = Metadata::Ptr (*)(); +using MetadataFactoryMap = std::map; +using MetadataFactoryMapCIter = MetadataFactoryMap::const_iterator; + +struct LockedMetadataTypeRegistry { + LockedMetadataTypeRegistry() {} + ~LockedMetadataTypeRegistry() {} + Mutex mMutex; + MetadataFactoryMap mMap; +}; + +// Global function for accessing the regsitry +static LockedMetadataTypeRegistry* +getMetadataTypeRegistry() +{ + static LockedMetadataTypeRegistry registry; + return ®istry; +} + +bool +Metadata::isRegisteredType(const Name &typeName) +{ + LockedMetadataTypeRegistry *registry = getMetadataTypeRegistry(); + Lock lock(registry->mMutex); + + return (registry->mMap.find(typeName) != registry->mMap.end()); +} + +void +Metadata::registerType(const Name &typeName, Metadata::Ptr (*createMetadata)()) +{ + LockedMetadataTypeRegistry *registry = getMetadataTypeRegistry(); + Lock lock(registry->mMutex); + + if (registry->mMap.find(typeName) != registry->mMap.end()) { + OPENVDB_THROW(KeyError, + "Cannot register " << typeName << ". Type is already registered"); + } + + registry->mMap[typeName] = createMetadata; +} + +void +Metadata::unregisterType(const Name &typeName) +{ + LockedMetadataTypeRegistry *registry = getMetadataTypeRegistry(); + Lock lock(registry->mMutex); + + registry->mMap.erase(typeName); +} + +Metadata::Ptr +Metadata::createMetadata(const Name &typeName) +{ + LockedMetadataTypeRegistry *registry = getMetadataTypeRegistry(); + Lock lock(registry->mMutex); + + MetadataFactoryMapCIter iter = registry->mMap.find(typeName); + + if (iter == registry->mMap.end()) { + OPENVDB_THROW(LookupError, + "Cannot create metadata for unregistered type " << typeName); + } + + return (iter->second)(); +} + +void +Metadata::clearRegistry() +{ + LockedMetadataTypeRegistry *registry = getMetadataTypeRegistry(); + Lock lock(registry->mMutex); + + registry->mMap.clear(); +} + + +//////////////////////////////////////// + + +bool +Metadata::operator==(const Metadata& other) const +{ + if (other.size() != this->size()) return false; + if (other.typeName() != this->typeName()) return false; + + std::ostringstream + bytes(std::ios_base::binary), + otherBytes(std::ios_base::binary); + try { + this->writeValue(bytes); + other.writeValue(otherBytes); + return (bytes.str() == otherBytes.str()); + } catch (Exception&) {} + return false; +} + + +//////////////////////////////////////// + + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + +Metadata::Ptr +UnknownMetadata::copy() const +{ + Metadata::Ptr metadata{new UnknownMetadata{mTypeName}}; + static_cast(metadata.get())->setValue(mBytes); + return metadata; +} + + +void +UnknownMetadata::copy(const Metadata& other) +{ + std::ostringstream ostr(std::ios_base::binary); + other.write(ostr); + std::istringstream istr(ostr.str(), std::ios_base::binary); + const auto numBytes = readSize(istr); + readValue(istr, numBytes); +} + + +void +UnknownMetadata::readValue(std::istream& is, Index32 numBytes) +{ + mBytes.clear(); + if (numBytes > 0) { + ByteVec buffer(numBytes); + is.read(reinterpret_cast(&buffer[0]), numBytes); + mBytes.swap(buffer); + } +} + + +void +UnknownMetadata::writeValue(std::ostream& os) const +{ + if (!mBytes.empty()) { + os.write(reinterpret_cast(&mBytes[0]), mBytes.size()); + } +} + +#else // if OPENVDB_ABI_VERSION_NUMBER < 5 + +void +UnknownMetadata::readValue(std::istream& is, Index32 numBytes) +{ + // Read and discard the metadata (without seeking, because + // the stream might not be seekable). + const size_t BUFFER_SIZE = 1024; + std::vector buffer(BUFFER_SIZE); + for (Index32 bytesRemaining = numBytes; bytesRemaining > 0; ) { + const Index32 bytesToSkip = std::min(bytesRemaining, BUFFER_SIZE); + is.read(&buffer[0], bytesToSkip); + bytesRemaining -= bytesToSkip; + } +} + + +void +UnknownMetadata::writeValue(std::ostream&) const +{ + OPENVDB_THROW(TypeError, "Metadata has unknown type"); +} + +#endif + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/Metadata.h b/openvdb/Metadata.h new file mode 100644 index 00000000..bceaa873 --- /dev/null +++ b/openvdb/Metadata.h @@ -0,0 +1,437 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_METADATA_HAS_BEEN_INCLUDED +#define OPENVDB_METADATA_HAS_BEEN_INCLUDED + +#include "version.h" +#include "Exceptions.h" +#include "Types.h" +#include "math/Math.h" // for math::isZero() +#include "util/Name.h" +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// @brief Base class for storing metadata information in a grid. +class OPENVDB_API Metadata +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + Metadata() {} + virtual ~Metadata() {} + + // Disallow copying of instances of this class. + Metadata(const Metadata&) = delete; + Metadata& operator=(const Metadata&) = delete; + + /// Return the type name of the metadata. + virtual Name typeName() const = 0; + + /// Return a copy of the metadata. + virtual Metadata::Ptr copy() const = 0; + + /// Copy the given metadata into this metadata. + virtual void copy(const Metadata& other) = 0; + + /// Return a textual representation of this metadata. + virtual std::string str() const = 0; + + /// Return the boolean representation of this metadata (empty strings + /// and zeroVals evaluate to false; most other values evaluate to true). + virtual bool asBool() const = 0; + + /// Return @c true if the given metadata is equivalent to this metadata. + bool operator==(const Metadata& other) const; + /// Return @c true if the given metadata is different from this metadata. + bool operator!=(const Metadata& other) const { return !(*this == other); } + + /// Return the size of this metadata in bytes. + virtual Index32 size() const = 0; + + /// Unserialize this metadata from a stream. + void read(std::istream&); + /// Serialize this metadata to a stream. + void write(std::ostream&) const; + + /// Create new metadata of the given type. + static Metadata::Ptr createMetadata(const Name& typeName); + + /// Return @c true if the given type is known by the metadata type registry. + static bool isRegisteredType(const Name& typeName); + + /// Clear out the metadata registry. + static void clearRegistry(); + + /// Register the given metadata type along with a factory function. + static void registerType(const Name& typeName, Metadata::Ptr (*createMetadata)()); + static void unregisterType(const Name& typeName); + +protected: + /// Read the size of the metadata from a stream. + static Index32 readSize(std::istream&); + /// Write the size of the metadata to a stream. + void writeSize(std::ostream&) const; + + /// Read the metadata from a stream. + virtual void readValue(std::istream&, Index32 numBytes) = 0; + /// Write the metadata to a stream. + virtual void writeValue(std::ostream&) const = 0; +}; + + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + +/// @brief Subclass to hold raw data of an unregistered type +class OPENVDB_API UnknownMetadata: public Metadata +{ +public: + using ByteVec = std::vector; + + explicit UnknownMetadata(const Name& typ = ""): mTypeName(typ) {} + + Name typeName() const override { return mTypeName; } + Metadata::Ptr copy() const override; + void copy(const Metadata&) override; + std::string str() const override { return (mBytes.empty() ? "" : ""); } + bool asBool() const override { return !mBytes.empty(); } + Index32 size() const override { return static_cast(mBytes.size()); } + + void setValue(const ByteVec& bytes) { mBytes = bytes; } + const ByteVec& value() const { return mBytes; } + +protected: + void readValue(std::istream&, Index32 numBytes) override; + void writeValue(std::ostream&) const override; + +private: + Name mTypeName; + ByteVec mBytes; +}; + +#else // if OPENVDB_ABI_VERSION_NUMBER < 5 + +/// @brief Subclass to read (and ignore) data of an unregistered type +class OPENVDB_API UnknownMetadata: public Metadata +{ +public: + UnknownMetadata() {} + Name typeName() const override { return ""; } + Metadata::Ptr copy() const override { OPENVDB_THROW(TypeError, "Metadata has unknown type"); } + void copy(const Metadata&) override {OPENVDB_THROW(TypeError, "Destination has unknown type");} + std::string str() const override { return ""; } + bool asBool() const override { return false; } + Index32 size() const override { return 0; } + +protected: + void readValue(std::istream&, Index32 numBytes) override; + void writeValue(std::ostream&) const override; +}; + +#endif + + +/// @brief Templated metadata class to hold specific types. +template +class TypedMetadata: public Metadata +{ +public: + using Ptr = SharedPtr>; + using ConstPtr = SharedPtr>; + + TypedMetadata(); + TypedMetadata(const T& value); + TypedMetadata(const TypedMetadata& other); + ~TypedMetadata() override; + + Name typeName() const override; + Metadata::Ptr copy() const override; + void copy(const Metadata& other) override; + std::string str() const override; + bool asBool() const override; + Index32 size() const override { return static_cast(sizeof(T)); } + + /// Set this metadata's value. + void setValue(const T&); + /// Return this metadata's value. + T& value(); + const T& value() const; + + // Static specialized function for the type name. This function must be + // template specialized for each type T. + static Name staticTypeName() { return typeNameAsString(); } + + /// Create new metadata of this type. + static Metadata::Ptr createMetadata(); + + static void registerType(); + static void unregisterType(); + static bool isRegisteredType(); + +protected: + void readValue(std::istream&, Index32 numBytes) override; + void writeValue(std::ostream&) const override; + +private: + T mValue; +}; + +/// Write a Metadata to an output stream +std::ostream& operator<<(std::ostream& ostr, const Metadata& metadata); + + +//////////////////////////////////////// + + +inline void +Metadata::writeSize(std::ostream& os) const +{ + const Index32 n = this->size(); + os.write(reinterpret_cast(&n), sizeof(Index32)); +} + + +inline Index32 +Metadata::readSize(std::istream& is) +{ + Index32 n = 0; + is.read(reinterpret_cast(&n), sizeof(Index32)); + return n; +} + + +inline void +Metadata::read(std::istream& is) +{ + const Index32 numBytes = this->readSize(is); + this->readValue(is, numBytes); +} + + +inline void +Metadata::write(std::ostream& os) const +{ + this->writeSize(os); + this->writeValue(os); +} + + +//////////////////////////////////////// + + +template +inline +TypedMetadata::TypedMetadata() : mValue(T()) +{ +} + +template +inline +TypedMetadata::TypedMetadata(const T &value) : mValue(value) +{ +} + +template +inline +TypedMetadata::TypedMetadata(const TypedMetadata &other) : + Metadata(), + mValue(other.mValue) +{ +} + +template +inline +TypedMetadata::~TypedMetadata() +{ +} + +template +inline Name +TypedMetadata::typeName() const +{ + return TypedMetadata::staticTypeName(); +} + +template +inline void +TypedMetadata::setValue(const T& val) +{ + mValue = val; +} + +template +inline T& +TypedMetadata::value() +{ + return mValue; +} + +template +inline const T& +TypedMetadata::value() const +{ + return mValue; +} + +template +inline Metadata::Ptr +TypedMetadata::copy() const +{ + Metadata::Ptr metadata(new TypedMetadata()); + metadata->copy(*this); + return metadata; +} + +template +inline void +TypedMetadata::copy(const Metadata &other) +{ + const TypedMetadata* t = dynamic_cast*>(&other); + if (t == nullptr) OPENVDB_THROW(TypeError, "Incompatible type during copy"); + mValue = t->mValue; +} + + +template +inline void +TypedMetadata::readValue(std::istream& is, Index32 /*numBytes*/) +{ + //assert(this->size() == numBytes); + is.read(reinterpret_cast(&mValue), this->size()); +} + +template +inline void +TypedMetadata::writeValue(std::ostream& os) const +{ + os.write(reinterpret_cast(&mValue), this->size()); +} + +template +inline std::string +TypedMetadata::str() const +{ + std::ostringstream ostr; + ostr << mValue; + return ostr.str(); +} + +template +inline bool +TypedMetadata::asBool() const +{ + return !math::isZero(mValue); +} + +template +inline Metadata::Ptr +TypedMetadata::createMetadata() +{ + Metadata::Ptr ret(new TypedMetadata()); + return ret; +} + +template +inline void +TypedMetadata::registerType() +{ + Metadata::registerType(TypedMetadata::staticTypeName(), + TypedMetadata::createMetadata); +} + +template +inline void +TypedMetadata::unregisterType() +{ + Metadata::unregisterType(TypedMetadata::staticTypeName()); +} + +template +inline bool +TypedMetadata::isRegisteredType() +{ + return Metadata::isRegisteredType(TypedMetadata::staticTypeName()); +} + + +template<> +inline std::string +TypedMetadata::str() const +{ + return (mValue ? "true" : "false"); +} + + +inline std::ostream& +operator<<(std::ostream& ostr, const Metadata& metadata) +{ + ostr << metadata.str(); + return ostr; +} + + +using BoolMetadata = TypedMetadata; +using DoubleMetadata = TypedMetadata; +using FloatMetadata = TypedMetadata; +using Int32Metadata = TypedMetadata; +using Int64Metadata = TypedMetadata; +using StringMetadata = TypedMetadata; +using Vec2DMetadata = TypedMetadata; +using Vec2IMetadata = TypedMetadata; +using Vec2SMetadata = TypedMetadata; +using Vec3DMetadata = TypedMetadata; +using Vec3IMetadata = TypedMetadata; +using Vec3SMetadata = TypedMetadata; +using Vec4DMetadata = TypedMetadata; +using Vec4IMetadata = TypedMetadata; +using Vec4SMetadata = TypedMetadata; +using Mat4SMetadata = TypedMetadata; +using Mat4DMetadata = TypedMetadata; + + +//////////////////////////////////////// + + +template<> +inline Index32 +StringMetadata::size() const +{ + return static_cast(mValue.size()); +} + + +template<> +inline std::string +StringMetadata::str() const +{ + return mValue; +} + + +template<> +inline void +StringMetadata::readValue(std::istream& is, Index32 size) +{ + mValue.resize(size, '\0'); + is.read(&mValue[0], size); +} + +template<> +inline void +StringMetadata::writeValue(std::ostream& os) const +{ + os.write(reinterpret_cast(&mValue[0]), this->size()); +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_METADATA_HAS_BEEN_INCLUDED diff --git a/openvdb/Platform.cc b/openvdb/Platform.cc new file mode 100644 index 00000000..4a7f6115 --- /dev/null +++ b/openvdb/Platform.cc @@ -0,0 +1,7 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +// For Windows, we need these includes to ensure all OPENVDB_API +// functions/classes are compiled into the shared library. +#include "openvdb.h" +#include "Exceptions.h" diff --git a/openvdb/Platform.h b/openvdb/Platform.h new file mode 100644 index 00000000..2acf5b79 --- /dev/null +++ b/openvdb/Platform.h @@ -0,0 +1,241 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file Platform.h + +#ifndef OPENVDB_PLATFORM_HAS_BEEN_INCLUDED +#define OPENVDB_PLATFORM_HAS_BEEN_INCLUDED + +#include "PlatformConfig.h" + +#define PRAGMA(x) _Pragma(#x) + +/// @name Utilities +/// @{ +/// @cond OPENVDB_VERSION_INTERNAL +#define OPENVDB_PREPROC_STRINGIFY_(x) #x +/// @endcond +/// @brief Return @a x as a string literal. If @a x is a macro, +/// return its value as a string literal. +/// @hideinitializer +#define OPENVDB_PREPROC_STRINGIFY(x) OPENVDB_PREPROC_STRINGIFY_(x) + +/// @cond OPENVDB_VERSION_INTERNAL +#define OPENVDB_PREPROC_CONCAT_(x, y) x ## y +/// @endcond +/// @brief Form a new token by concatenating two existing tokens. +/// If either token is a macro, concatenate its value. +/// @hideinitializer +#define OPENVDB_PREPROC_CONCAT(x, y) OPENVDB_PREPROC_CONCAT_(x, y) +/// @} + + +/// Use OPENVDB_DEPRECATED to mark functions as deprecated. +/// It should be placed right before the signature of the function, +/// e.g., "OPENVDB_DEPRECATED void functionName();". +#ifdef OPENVDB_DEPRECATED +#undef OPENVDB_DEPRECATED +#endif +#ifdef _MSC_VER + #define OPENVDB_DEPRECATED __declspec(deprecated) +#else + #define OPENVDB_DEPRECATED __attribute__ ((deprecated)) +#endif + +/// Macro for determining if GCC version is >= than X.Y +#if defined(__GNUC__) + #define OPENVDB_CHECK_GCC(MAJOR, MINOR) \ + (__GNUC__ > MAJOR || (__GNUC__ == MAJOR && __GNUC_MINOR__ >= MINOR)) +#else + #define OPENVDB_CHECK_GCC(MAJOR, MINOR) 0 +#endif + +/// OpenVDB now requires C++11 +#define OPENVDB_HAS_CXX11 1 + +/// For compilers that need templated function specializations to have +/// storage qualifiers, we need to declare the specializations as static inline. +/// Otherwise, we'll get linker errors about multiply defined symbols. +#if defined(__GNUC__) && OPENVDB_CHECK_GCC(4, 4) + #define OPENVDB_STATIC_SPECIALIZATION +#else + #define OPENVDB_STATIC_SPECIALIZATION static +#endif + + +/// SIMD Intrinsic Headers +#if defined(OPENVDB_USE_SSE42) || defined(OPENVDB_USE_AVX) + #if defined(_WIN32) + #include + #elif defined(__GNUC__) + #if defined(__x86_64__) || defined(__i386__) + #include + #elif defined(__ARM_NEON__) + #include + #endif + #endif +#endif + + +/// Bracket code with OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN/_END, +/// as in the following example, to inhibit ICC remarks about unreachable code: +/// @code +/// template +/// void processNode(NodeType& node) +/// { +/// OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN +/// if (NodeType::LEVEL == 0) return; // ignore leaf nodes +/// int i = 0; +/// ... +/// OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +/// } +/// @endcode +/// In the above, NodeType::LEVEL == 0 is a compile-time constant expression, +/// so for some template instantiations, the line below it is unreachable. +#if defined(__INTEL_COMPILER) + // Disable ICC remarks 111 ("statement is unreachable"), 128 ("loop is not reachable"), + // 185 ("dynamic initialization in unreachable code"), and 280 ("selector expression + // is constant"). + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN \ + _Pragma("warning (push)") \ + _Pragma("warning (disable:111)") \ + _Pragma("warning (disable:128)") \ + _Pragma("warning (disable:185)") \ + _Pragma("warning (disable:280)") + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_END \ + _Pragma("warning (pop)") +#elif defined(__clang__) + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN \ + PRAGMA(clang diagnostic push) \ + PRAGMA(clang diagnostic ignored "-Wunreachable-code") + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_END \ + PRAGMA(clang diagnostic pop) +#else + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + #define OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +#endif + + +/// @brief Bracket code with OPENVDB_NO_DEPRECATION_WARNING_BEGIN/_END, +/// to inhibit warnings about deprecated code. +/// @note Use this sparingly. Remove references to deprecated code if at all possible. +/// @details Example: +/// @code +/// OPENVDB_DEPRECATED void myDeprecatedFunction() {} +/// +/// { +/// OPENVDB_NO_DEPRECATION_WARNING_BEGIN +/// myDeprecatedFunction(); +/// OPENVDB_NO_DEPRECATION_WARNING_END +/// } +/// @endcode +#if defined __INTEL_COMPILER + #define OPENVDB_NO_DEPRECATION_WARNING_BEGIN \ + _Pragma("warning (push)") \ + _Pragma("warning (disable:1478)") \ + PRAGMA(message("NOTE: ignoring deprecation warning at " __FILE__ \ + ":" OPENVDB_PREPROC_STRINGIFY(__LINE__))) + #define OPENVDB_NO_DEPRECATION_WARNING_END \ + _Pragma("warning (pop)") +#elif defined __clang__ + #define OPENVDB_NO_DEPRECATION_WARNING_BEGIN \ + _Pragma("clang diagnostic push") \ + _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"") + // note: no #pragma message, since Clang treats them as warnings + #define OPENVDB_NO_DEPRECATION_WARNING_END \ + _Pragma("clang diagnostic pop") +#elif defined __GNUC__ + #define OPENVDB_NO_DEPRECATION_WARNING_BEGIN \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \ + _Pragma("message(\"NOTE: ignoring deprecation warning\")") + #define OPENVDB_NO_DEPRECATION_WARNING_END \ + _Pragma("GCC diagnostic pop") +#elif defined _MSC_VER + #define OPENVDB_NO_DEPRECATION_WARNING_BEGIN \ + __pragma(warning(push)) \ + __pragma(warning(disable : 4996)) \ + __pragma(message("NOTE: ignoring deprecation warning at " __FILE__ \ + ":" OPENVDB_PREPROC_STRINGIFY(__LINE__))) + #define OPENVDB_NO_DEPRECATION_WARNING_END \ + __pragma(warning(pop)) +#else + #define OPENVDB_NO_DEPRECATION_WARNING_BEGIN + #define OPENVDB_NO_DEPRECATION_WARNING_END +#endif + + +/// @brief Bracket code with OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN/_END, +/// to inhibit warnings about type conversion. +/// @note Use this sparingly. Use static casts and explicit type conversion if at all possible. +/// @details Example: +/// @code +/// float value = 0.1f; +/// OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN +/// int valueAsInt = value; +/// OPENVDB_NO_TYPE_CONVERSION_WARNING_END +/// @endcode +#if defined __INTEL_COMPILER + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_END +#elif defined __GNUC__ + // -Wfloat-conversion was only introduced in GCC 4.9 + #if OPENVDB_CHECK_GCC(4, 9) + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wconversion\"") \ + _Pragma("GCC diagnostic ignored \"-Wfloat-conversion\"") + #else + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wconversion\"") + #endif + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_END \ + _Pragma("GCC diagnostic pop") +#else + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + #define OPENVDB_NO_TYPE_CONVERSION_WARNING_END +#endif + +/// Helper macros for defining library symbol visibility +#ifdef OPENVDB_EXPORT +#undef OPENVDB_EXPORT +#endif +#ifdef OPENVDB_IMPORT +#undef OPENVDB_IMPORT +#endif +#ifdef __GNUC__ + #define OPENVDB_EXPORT __attribute__((visibility("default"))) + #define OPENVDB_IMPORT __attribute__((visibility("default"))) +#endif +#ifdef _WIN32 + #ifdef OPENVDB_DLL + #define OPENVDB_EXPORT __declspec(dllexport) + #define OPENVDB_IMPORT __declspec(dllimport) + #else + #define OPENVDB_EXPORT + #define OPENVDB_IMPORT + #endif +#endif + +/// All classes and public free standing functions must be explicitly marked +/// as \_API to be exported. The \_PRIVATE macros are defined when +/// building that particular library. +#ifdef OPENVDB_API +#undef OPENVDB_API +#endif +#ifdef OPENVDB_PRIVATE + #define OPENVDB_API OPENVDB_EXPORT +#else + #define OPENVDB_API OPENVDB_IMPORT +#endif +#ifdef OPENVDB_HOUDINI_API +#undef OPENVDB_HOUDINI_API +#endif +#ifdef OPENVDB_HOUDINI_PRIVATE + #define OPENVDB_HOUDINI_API OPENVDB_EXPORT +#else + #define OPENVDB_HOUDINI_API OPENVDB_IMPORT +#endif + +#endif // OPENVDB_PLATFORM_HAS_BEEN_INCLUDED diff --git a/openvdb/PlatformConfig.h b/openvdb/PlatformConfig.h new file mode 100644 index 00000000..8aab3546 --- /dev/null +++ b/openvdb/PlatformConfig.h @@ -0,0 +1,26 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file PlatformConfig.h + +#ifndef OPENVDB_PLATFORMCONFIG_HAS_BEEN_INCLUDED +#define OPENVDB_PLATFORMCONFIG_HAS_BEEN_INCLUDED + +// Windows specific configuration +#ifdef _WIN32 + + // By default, assume we're building OpenVDB as a DLL if we're dynamically + // linking in the CRT, unless OPENVDB_STATICLIB is defined. + #if defined(_DLL) && !defined(OPENVDB_STATICLIB) && !defined(OPENVDB_DLL) + #define OPENVDB_DLL + #endif + + // By default, assume that we're dynamically linking OpenEXR, unless + // OPENVDB_OPENEXR_STATICLIB is defined. + #if !defined(OPENVDB_OPENEXR_STATICLIB) && !defined(OPENEXR_DLL) + #define OPENEXR_DLL + #endif + +#endif // _WIN32 + +#endif // OPENVDB_PLATFORMCONFIG_HAS_BEEN_INCLUDED diff --git a/openvdb/README b/openvdb/README new file mode 100644 index 00000000..664fc703 --- /dev/null +++ b/openvdb/README @@ -0,0 +1,16 @@ +======================================================================== + OpenVDB +======================================================================== + +The OpenVDB library comprises a hierarchical data structure and a suite +of tools for the efficient manipulation of sparse, possibly time-varying, +volumetric data discretized on a three-dimensional grid. + +For instructions on library installation and dependencies see INSTALL + +For documentation of the library and code examples see: +www.openvdb.org/documentation/doxygen + +For more details visit the project's home page: +www.openvdb.org + diff --git a/openvdb/Types.h b/openvdb/Types.h new file mode 100644 index 00000000..70269cf0 --- /dev/null +++ b/openvdb/Types.h @@ -0,0 +1,739 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TYPES_HAS_BEEN_INCLUDED +#define OPENVDB_TYPES_HAS_BEEN_INCLUDED + +#include "version.h" +#include "Platform.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +// One-dimensional scalar types +using Index32 = uint32_t; +using Index64 = uint64_t; +using Index = Index32; +using Int16 = int16_t; +using Int32 = int32_t; +using Int64 = int64_t; +using Int = Int32; +using Byte = unsigned char; +using Real = double; + +// Two-dimensional vector types +using Vec2R = math::Vec2; +using Vec2I = math::Vec2; +using Vec2f = math::Vec2; +using Vec2H = math::Vec2; +using math::Vec2i; +using math::Vec2s; +using math::Vec2d; + +// Three-dimensional vector types +using Vec3R = math::Vec3; +using Vec3I = math::Vec3; +using Vec3f = math::Vec3; +using Vec3H = math::Vec3; +using Vec3U8 = math::Vec3; +using Vec3U16 = math::Vec3; +using math::Vec3i; +using math::Vec3s; +using math::Vec3d; + +using math::Coord; +using math::CoordBBox; +using BBoxd = math::BBox; + +// Four-dimensional vector types +using Vec4R = math::Vec4; +using Vec4I = math::Vec4; +using Vec4f = math::Vec4; +using Vec4H = math::Vec4; +using math::Vec4i; +using math::Vec4s; +using math::Vec4d; + +// Three-dimensional matrix types +using Mat3R = math::Mat3; +using math::Mat3s; +using math::Mat3d; + +// Four-dimensional matrix types +using Mat4R = math::Mat4; +using math::Mat4s; +using math::Mat4d; + +// Quaternions +using QuatR = math::Quat; +using math::Quats; +using math::Quatd; + +// Dummy type for a voxel with a binary mask value, e.g. the active state +class ValueMask {}; + +// Use STL shared pointers from OpenVDB 4 on. +template using SharedPtr = std::shared_ptr; +template using WeakPtr = std::weak_ptr; + +/// @brief Return a new shared pointer that points to the same object +/// as the given pointer but with possibly different const-ness. +/// @par Example: +/// @code +/// FloatGrid::ConstPtr grid = ...; +/// FloatGrid::Ptr nonConstGrid = ConstPtrCast(grid); +/// FloatGrid::ConstPtr constGrid = ConstPtrCast(nonConstGrid); +/// @endcode +template inline SharedPtr +ConstPtrCast(const SharedPtr& ptr) { return std::const_pointer_cast(ptr); } + +/// @brief Return a new shared pointer that is either null or points to +/// the same object as the given pointer after a @c dynamic_cast. +/// @par Example: +/// @code +/// GridBase::ConstPtr grid = ...; +/// FloatGrid::ConstPtr floatGrid = DynamicPtrCast(grid); +/// @endcode +template inline SharedPtr +DynamicPtrCast(const SharedPtr& ptr) { return std::dynamic_pointer_cast(ptr); } + +/// @brief Return a new shared pointer that points to the same object +/// as the given pointer after a @c static_cast. +/// @par Example: +/// @code +/// FloatGrid::Ptr floatGrid = ...; +/// GridBase::Ptr grid = StaticPtrCast(floatGrid); +/// @endcode +template inline SharedPtr +StaticPtrCast(const SharedPtr& ptr) { return std::static_pointer_cast(ptr); } + + +//////////////////////////////////////// + + +/// @brief Integer wrapper, required to distinguish PointIndexGrid and +/// PointDataGrid from Int32Grid and Int64Grid +/// @note @c Kind is a dummy parameter used to create distinct types. +template +struct PointIndex +{ + static_assert(std::is_integral::value, "PointIndex requires an integer value type"); + + using IntType = IntType_; + + PointIndex(IntType i = IntType(0)): mIndex(i) {} + + /// Explicit type conversion constructor + template explicit PointIndex(T i): mIndex(static_cast(i)) {} + + operator IntType() const { return mIndex; } + + /// Needed to support the (zeroVal() + val) idiom. + template + PointIndex operator+(T x) { return PointIndex(mIndex + IntType(x)); } + +private: + IntType mIndex; +}; + + +using PointIndex32 = PointIndex; +using PointIndex64 = PointIndex; + +using PointDataIndex32 = PointIndex; +using PointDataIndex64 = PointIndex; + + +//////////////////////////////////////// + + +/// @brief Helper metafunction used to determine if the first template +/// parameter is a specialization of the class template given in the second +/// template parameter +template class Template> +struct IsSpecializationOf: public std::false_type {}; + +template class Template> +struct IsSpecializationOf, Template>: public std::true_type {}; + + +//////////////////////////////////////// + + +template::value || + IsSpecializationOf::value || + IsSpecializationOf::value> +struct VecTraits +{ + static const bool IsVec = true; + static const int Size = T::size; + using ElementType = typename T::ValueType; +}; + +template +struct VecTraits +{ + static const bool IsVec = false; + static const int Size = 1; + using ElementType = T; +}; + +template::value> +struct QuatTraits +{ + static const bool IsQuat = true; + static const int Size = T::size; + using ElementType = typename T::ValueType; +}; + +template +struct QuatTraits +{ + static const bool IsQuat = false; + static const int Size = 1; + using ElementType = T; +}; + +template::value || + IsSpecializationOf::value> +struct MatTraits +{ + static const bool IsMat = true; + static const int Size = T::size; + using ElementType = typename T::ValueType; +}; + +template +struct MatTraits +{ + static const bool IsMat = false; + static const int Size = 1; + using ElementType = T; +}; + +template::IsVec || + QuatTraits::IsQuat || + MatTraits::IsMat> +struct ValueTraits +{ + static const bool IsVec = VecTraits::IsVec; + static const bool IsQuat = QuatTraits::IsQuat; + static const bool IsMat = MatTraits::IsMat; + static const bool IsScalar = false; + static const int Size = T::size; + static const int Elements = IsMat ? Size*Size : Size; + using ElementType = typename T::ValueType; +}; + +template +struct ValueTraits +{ + static const bool IsVec = false; + static const bool IsQuat = false; + static const bool IsMat = false; + static const bool IsScalar = true; + static const int Size = 1; + static const int Elements = 1; + using ElementType = T; +}; + + +//////////////////////////////////////// + + +/// @brief CanConvertType::value is @c true if a value +/// of type @a ToType can be constructed from a value of type @a FromType. +template +struct CanConvertType { enum { value = std::is_constructible::value }; }; + +// Specializations for vector types, which can be constructed from values +// of their own ValueTypes (or values that can be converted to their ValueTypes), +// but only explicitly +template struct CanConvertType > { enum { value = true }; }; +template struct CanConvertType > { enum { value = true }; }; +template struct CanConvertType > { enum { value = true }; }; +template struct CanConvertType, math::Vec2 > { enum {value = true}; }; +template struct CanConvertType, math::Vec3 > { enum {value = true}; }; +template struct CanConvertType, math::Vec4 > { enum {value = true}; }; +template +struct CanConvertType > { enum { value = CanConvertType::value }; }; +template +struct CanConvertType > { enum { value = CanConvertType::value }; }; +template +struct CanConvertType > { enum { value = CanConvertType::value }; }; +template<> struct CanConvertType { enum {value = true}; }; +template<> struct CanConvertType { enum {value = true}; }; +template +struct CanConvertType { enum {value = CanConvertType::value}; }; +template +struct CanConvertType { enum {value = CanConvertType::value}; }; + + +//////////////////////////////////////// + + +/// @brief CopyConstness::Type is either const T2 +/// or @c T2 with no @c const qualifier, depending on whether @c T1 is @c const. +/// @details For example, +/// - CopyConstness::Type is @c int +/// - CopyConstness::Type is @c int +/// - CopyConstness::Type is const int +/// - CopyConstness::Type is const int +template struct CopyConstness { + using Type = typename std::remove_const::type; +}; + +/// @cond OPENVDB_TYPES_INTERNAL +template struct CopyConstness { + using Type = const ToType; +}; +/// @endcond + + +//////////////////////////////////////// + + +/// @cond OPENVDB_TYPES_INTERNAL + +template struct TypeList; // forward declaration + +namespace internal { + +// Implementation details of TypeList + +template struct TSAppendImpl; + +// Append zero or more types. +template +struct TSAppendImpl, OtherTs...> { + using type = TypeList; +}; + +// Append another TypeList's members. +template +struct TSAppendImpl, TypeList> { + using type = TypeList; +}; + + +// Remove all occurrences of type T. +template struct TSEraseImpl; + +// TypeList<>::Erase = TypeList<> +template +struct TSEraseImpl, T> { using type = TypeList<>; }; + +// TypeList::Erase = TypeList::Erase +template +struct TSEraseImpl, T> { + using type = typename TSEraseImpl, T>::type; +}; + +// TypeList::Erase = +// TypeList::Append::Erase> +template +struct TSEraseImpl, T> { + using type = typename TSAppendImpl, + typename TSEraseImpl, T>::type>::type; +}; + + +template struct TSRemoveImpl; + +template +struct TSRemoveImpl { using type = ListT; }; + +// Remove one or more types. +template +struct TSRemoveImpl { + using type = typename TSRemoveImpl::type, Ts...>::type; +}; + +// Remove the members of another TypeList. +template +struct TSRemoveImpl> { + using type = typename TSRemoveImpl::type; +}; + + +template inline void TSForEachImpl(OpT) {} +template +inline void TSForEachImpl(OpT op) { op(T()); TSForEachImpl(op); } + +} // namespace internal + +/// @endcond + + +/// @brief A list of types (not necessarily unique) +/// @details Example: +/// @code +/// using MyTypes = openvdb::TypeList; +/// @endcode +template +struct TypeList +{ + /// The type of this list + using Self = TypeList; + + /// @brief Append types, or the members of another TypeList, to this list. + /// @details Example: + /// @code + /// { + /// using IntTypes = openvdb::TypeList; + /// using RealTypes = openvdb::TypeList; + /// using NumericTypes = IntTypes::Append; + /// } + /// { + /// using IntTypes = openvdb::TypeList::Append; + /// using NumericTypes = IntTypes::Append::Append; + /// } + /// @endcode + template + using Append = typename internal::TSAppendImpl::type; + + /// @brief Remove all occurrences of one or more types, or the members of + /// another TypeList, from this list. + /// @details Example: + /// @code + /// { + /// using NumericTypes = openvdb::TypeList; + /// using LongTypes = openvdb::TypeList; + /// using ShortTypes = NumericTypes::Remove; // float, Int16, Int32 + /// } + /// @endcode + template + using Remove = typename internal::TSRemoveImpl::type; + + /// @brief Invoke a templated, unary functor on a value of each type in this list. + /// @details Example: + /// @code + /// #include + /// + /// template + /// void printTypeList() + /// { + /// std::string sep; + /// auto op = [&](auto x) { // C++14 + /// std::cout << sep << typeid(decltype(x)).name(); sep = ", "; }; + /// ListT::foreach(op); + /// } + /// + /// using MyTypes = openvdb::TypeList; + /// printTypeList(); // "i, f, d" (exact output is compiler-dependent) + /// @endcode + /// + /// @note The functor object is passed by value. Wrap it with @c std::ref + /// to use the same object for each type. + template + static void foreach(OpT op) { internal::TSForEachImpl(op); } +}; + + +//////////////////////////////////////// + + +// Add new items to the *end* of this list, and update NUM_GRID_CLASSES. +enum GridClass { + GRID_UNKNOWN = 0, + GRID_LEVEL_SET, + GRID_FOG_VOLUME, + GRID_STAGGERED +}; +enum { NUM_GRID_CLASSES = GRID_STAGGERED + 1 }; + +static const Real LEVEL_SET_HALF_WIDTH = 3; + +/// The type of a vector determines how transforms are applied to it: +///
+///
Invariant +///
Does not transform (e.g., tuple, uvw, color) +/// +///
Covariant +///
Apply inverse-transpose transformation: @e w = 0, ignores translation +/// (e.g., gradient/normal) +/// +///
Covariant Normalize +///
Apply inverse-transpose transformation: @e w = 0, ignores translation, +/// vectors are renormalized (e.g., unit normal) +/// +///
Contravariant Relative +///
Apply "regular" transformation: @e w = 0, ignores translation +/// (e.g., displacement, velocity, acceleration) +/// +///
Contravariant Absolute +///
Apply "regular" transformation: @e w = 1, vector translates (e.g., position) +///
+enum VecType { + VEC_INVARIANT = 0, + VEC_COVARIANT, + VEC_COVARIANT_NORMALIZE, + VEC_CONTRAVARIANT_RELATIVE, + VEC_CONTRAVARIANT_ABSOLUTE +}; +enum { NUM_VEC_TYPES = VEC_CONTRAVARIANT_ABSOLUTE + 1 }; + + +/// Specify how grids should be merged during certain (typically multithreaded) operations. +///
+///
MERGE_ACTIVE_STATES +///
The output grid is active wherever any of the input grids is active. +/// +///
MERGE_NODES +///
The output grid's tree has a node wherever any of the input grids' trees +/// has a node, regardless of any active states. +/// +///
MERGE_ACTIVE_STATES_AND_NODES +///
The output grid is active wherever any of the input grids is active, +/// and its tree has a node wherever any of the input grids' trees has a node. +///
+enum MergePolicy { + MERGE_ACTIVE_STATES = 0, + MERGE_NODES, + MERGE_ACTIVE_STATES_AND_NODES +}; + + +//////////////////////////////////////// + + +template const char* typeNameAsString() { return typeid(T).name(); } +template<> inline const char* typeNameAsString() { return "bool"; } +template<> inline const char* typeNameAsString() { return "mask"; } +template<> inline const char* typeNameAsString() { return "half"; } +template<> inline const char* typeNameAsString() { return "float"; } +template<> inline const char* typeNameAsString() { return "double"; } +template<> inline const char* typeNameAsString() { return "int8"; } +template<> inline const char* typeNameAsString() { return "uint8"; } +template<> inline const char* typeNameAsString() { return "int16"; } +template<> inline const char* typeNameAsString() { return "uint16"; } +template<> inline const char* typeNameAsString() { return "int32"; } +template<> inline const char* typeNameAsString() { return "uint32"; } +template<> inline const char* typeNameAsString() { return "int64"; } +template<> inline const char* typeNameAsString() { return "vec2i"; } +template<> inline const char* typeNameAsString() { return "vec2s"; } +template<> inline const char* typeNameAsString() { return "vec2d"; } +template<> inline const char* typeNameAsString() { return "vec3u8"; } +template<> inline const char* typeNameAsString() { return "vec3u16"; } +template<> inline const char* typeNameAsString() { return "vec3i"; } +template<> inline const char* typeNameAsString() { return "vec3s"; } +template<> inline const char* typeNameAsString() { return "vec3d"; } +template<> inline const char* typeNameAsString() { return "vec4i"; } +template<> inline const char* typeNameAsString() { return "vec4s"; } +template<> inline const char* typeNameAsString() { return "vec4d"; } +template<> inline const char* typeNameAsString() { return "string"; } +template<> inline const char* typeNameAsString() { return "mat3s"; } +template<> inline const char* typeNameAsString() { return "mat3d"; } +template<> inline const char* typeNameAsString() { return "mat4s"; } +template<> inline const char* typeNameAsString() { return "mat4d"; } +template<> inline const char* typeNameAsString() { return "quats"; } +template<> inline const char* typeNameAsString() { return "quatd"; } +template<> inline const char* typeNameAsString() { return "ptidx32"; } +template<> inline const char* typeNameAsString() { return "ptidx64"; } +template<> inline const char* typeNameAsString() { return "ptdataidx32"; } +template<> inline const char* typeNameAsString() { return "ptdataidx64"; } + + +//////////////////////////////////////// + + +/// @brief This struct collects both input and output arguments to "grid combiner" functors +/// used with the tree::TypedGrid::combineExtended() and combine2Extended() methods. +/// AValueType and BValueType are the value types of the two grids being combined. +/// +/// @see openvdb/tree/Tree.h for usage information. +/// +/// Setter methods return references to this object, to facilitate the following usage: +/// @code +/// CombineArgs args; +/// myCombineOp(args.setARef(aVal).setBRef(bVal).setAIsActive(true).setBIsActive(false)); +/// @endcode +template +class CombineArgs +{ +public: + using AValueT = AValueType; + using BValueT = BValueType; + + CombineArgs() + : mAValPtr(nullptr) + , mBValPtr(nullptr) + , mResultValPtr(&mResultVal) + , mAIsActive(false) + , mBIsActive(false) + , mResultIsActive(false) + { + } + + /// Use this constructor when the result value is stored externally. + CombineArgs(const AValueType& a, const BValueType& b, AValueType& result, + bool aOn = false, bool bOn = false) + : mAValPtr(&a) + , mBValPtr(&b) + , mResultValPtr(&result) + , mAIsActive(aOn) + , mBIsActive(bOn) + { + this->updateResultActive(); + } + + /// Use this constructor when the result value should be stored in this struct. + CombineArgs(const AValueType& a, const BValueType& b, bool aOn = false, bool bOn = false) + : mAValPtr(&a) + , mBValPtr(&b) + , mResultValPtr(&mResultVal) + , mAIsActive(aOn) + , mBIsActive(bOn) + { + this->updateResultActive(); + } + + /// Get the A input value. + const AValueType& a() const { return *mAValPtr; } + /// Get the B input value. + const BValueType& b() const { return *mBValPtr; } + //@{ + /// Get the output value. + const AValueType& result() const { return *mResultValPtr; } + AValueType& result() { return *mResultValPtr; } + //@} + + /// Set the output value. + CombineArgs& setResult(const AValueType& val) { *mResultValPtr = val; return *this; } + + /// Redirect the A value to a new external source. + CombineArgs& setARef(const AValueType& a) { mAValPtr = &a; return *this; } + /// Redirect the B value to a new external source. + CombineArgs& setBRef(const BValueType& b) { mBValPtr = &b; return *this; } + /// Redirect the result value to a new external destination. + CombineArgs& setResultRef(AValueType& val) { mResultValPtr = &val; return *this; } + + /// @return true if the A value is active + bool aIsActive() const { return mAIsActive; } + /// @return true if the B value is active + bool bIsActive() const { return mBIsActive; } + /// @return true if the output value is active + bool resultIsActive() const { return mResultIsActive; } + + /// Set the active state of the A value. + CombineArgs& setAIsActive(bool b) { mAIsActive = b; updateResultActive(); return *this; } + /// Set the active state of the B value. + CombineArgs& setBIsActive(bool b) { mBIsActive = b; updateResultActive(); return *this; } + /// Set the active state of the output value. + CombineArgs& setResultIsActive(bool b) { mResultIsActive = b; return *this; } + +protected: + /// By default, the result value is active if either of the input values is active, + /// but this behavior can be overridden by calling setResultIsActive(). + void updateResultActive() { mResultIsActive = mAIsActive || mBIsActive; } + + const AValueType* mAValPtr; // pointer to input value from A grid + const BValueType* mBValPtr; // pointer to input value from B grid + AValueType mResultVal; // computed output value (unused if stored externally) + AValueType* mResultValPtr; // pointer to either mResultVal or an external value + bool mAIsActive, mBIsActive; // active states of A and B values + bool mResultIsActive; // computed active state (default: A active || B active) +}; + + +/// This struct adapts a "grid combiner" functor to swap the A and B grid values +/// (e.g., so that if the original functor computes a + 2 * b, the adapted functor +/// will compute b + 2 * a). +template +struct SwappedCombineOp +{ + SwappedCombineOp(CombineOp& _op): op(_op) {} + + void operator()(CombineArgs& args) + { + CombineArgs swappedArgs(args.b(), args.a(), args.result(), + args.bIsActive(), args.aIsActive()); + op(swappedArgs); + } + + CombineOp& op; +}; + + +//////////////////////////////////////// + + +/// @brief Tag dispatch class that distinguishes shallow copy constructors +/// from deep copy constructors +class ShallowCopy {}; +/// @brief Tag dispatch class that distinguishes topology copy constructors +/// from deep copy constructors +class TopologyCopy {}; +/// @brief Tag dispatch class that distinguishes constructors during file input +class PartialCreate {}; + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#if defined(__ICC) + +// Use these defines to bracket a region of code that has safe static accesses. +// Keep the region as small as possible. +#define OPENVDB_START_THREADSAFE_STATIC_REFERENCE __pragma(warning(disable:1710)) +#define OPENVDB_FINISH_THREADSAFE_STATIC_REFERENCE __pragma(warning(default:1710)) +#define OPENVDB_START_THREADSAFE_STATIC_WRITE __pragma(warning(disable:1711)) +#define OPENVDB_FINISH_THREADSAFE_STATIC_WRITE __pragma(warning(default:1711)) +#define OPENVDB_START_THREADSAFE_STATIC_ADDRESS __pragma(warning(disable:1712)) +#define OPENVDB_FINISH_THREADSAFE_STATIC_ADDRESS __pragma(warning(default:1712)) + +// Use these defines to bracket a region of code that has unsafe static accesses. +// Keep the region as small as possible. +#define OPENVDB_START_NON_THREADSAFE_STATIC_REFERENCE __pragma(warning(disable:1710)) +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_REFERENCE __pragma(warning(default:1710)) +#define OPENVDB_START_NON_THREADSAFE_STATIC_WRITE __pragma(warning(disable:1711)) +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_WRITE __pragma(warning(default:1711)) +#define OPENVDB_START_NON_THREADSAFE_STATIC_ADDRESS __pragma(warning(disable:1712)) +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_ADDRESS __pragma(warning(default:1712)) + +// Simpler version for one-line cases +#define OPENVDB_THREADSAFE_STATIC_REFERENCE(CODE) \ + __pragma(warning(disable:1710)); CODE; __pragma(warning(default:1710)) +#define OPENVDB_THREADSAFE_STATIC_WRITE(CODE) \ + __pragma(warning(disable:1711)); CODE; __pragma(warning(default:1711)) +#define OPENVDB_THREADSAFE_STATIC_ADDRESS(CODE) \ + __pragma(warning(disable:1712)); CODE; __pragma(warning(default:1712)) + +#else // GCC does not support these compiler warnings + +#define OPENVDB_START_THREADSAFE_STATIC_REFERENCE +#define OPENVDB_FINISH_THREADSAFE_STATIC_REFERENCE +#define OPENVDB_START_THREADSAFE_STATIC_WRITE +#define OPENVDB_FINISH_THREADSAFE_STATIC_WRITE +#define OPENVDB_START_THREADSAFE_STATIC_ADDRESS +#define OPENVDB_FINISH_THREADSAFE_STATIC_ADDRESS + +#define OPENVDB_START_NON_THREADSAFE_STATIC_REFERENCE +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_REFERENCE +#define OPENVDB_START_NON_THREADSAFE_STATIC_WRITE +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_WRITE +#define OPENVDB_START_NON_THREADSAFE_STATIC_ADDRESS +#define OPENVDB_FINISH_NON_THREADSAFE_STATIC_ADDRESS + +#define OPENVDB_THREADSAFE_STATIC_REFERENCE(CODE) CODE +#define OPENVDB_THREADSAFE_STATIC_WRITE(CODE) CODE +#define OPENVDB_THREADSAFE_STATIC_ADDRESS(CODE) CODE + +#endif // defined(__ICC) + +#endif // OPENVDB_TYPES_HAS_BEEN_INCLUDED diff --git a/openvdb/cmd/CMakeLists.txt b/openvdb/cmd/CMakeLists.txt new file mode 100644 index 00000000..1e5ef0db --- /dev/null +++ b/openvdb/cmd/CMakeLists.txt @@ -0,0 +1,220 @@ +## Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 +# +#[=======================================================================[ + + CMake Configuration for OpenVDB Binaries + +#]=======================================================================] + +cmake_minimum_required(VERSION 3.3) +project(OpenVDBBinaries) + +# Monitoring _ROOT variables +if(POLICY CMP0074) + cmake_policy(SET CMP0074 NEW) +endif() + +###### OpenVDB Binary Component Options + +option(OPENVDB_BUILD_VDB_PRINT "Build vdb_print" ON) +option(OPENVDB_BUILD_VDB_LOD "Build vdb_lod" OFF) +option(OPENVDB_BUILD_VDB_RENDER "Build vdb_render" OFF) +option(OPENVDB_BUILD_VDB_VIEW "Build vdb_view" OFF) + +######################################################################### + +message(STATUS "----------------------------------------------------") +message(STATUS "----------- Configuring OpenVDBBinaries ------------") +message(STATUS "----------------------------------------------------") + +########################################################################## + +# Collect lib dependencies shared by all binaries + +if(NOT OPENVDB_BUILD_CORE) + set(OPENVDB_LIB OpenVDB::openvdb) +else() + set(OPENVDB_LIB openvdb) +endif() + +set(OPENVDB_BINARIES_DEPENDENT_LIBS + ${OPENVDB_LIB} +) + +########################################################################## + +if(WIN32) + # Because of implicit linking! + link_directories(${Boost_LIBRARY_DIR}) + if(OPENVDB_DISABLE_BOOST_IMPLICIT_LINKING) + add_definitions(-DBOOST_ALL_NO_LIB) + endif() +endif() + +if(WIN32) + add_definitions(-D_WIN32 -DNOMINMAX -DOPENVDB_DLL) +endif() + +# rpath handling + +set(RPATHS "") +if(OPENVDB_ENABLE_RPATH) + # @todo There is probably a better way to do this for imported targets + list(APPEND RPATHS + ${Boost_LIBRARY_DIRS} + ${IlmBase_LIBRARY_DIRS} + ${Log4cplus_LIBRARY_DIRS} + ${Blosc_LIBRARY_DIRS} + ${Tbb_LIBRARY_DIRS} + ) + if(OPENVDB_BUILD_CORE) + list(APPEND RPATHS ${CMAKE_INSTALL_PREFIX}/lib) + else() + list(APPEND RPATHS ${OpenVDB_LIBRARY_DIRS}) + endif() + + list(REMOVE_DUPLICATES RPATHS) +endif() + +########################################################################## + +##### VDB binaries + +#### vdb_print + +if(OPENVDB_BUILD_VDB_PRINT) + set(VDB_PRINT_SOURCE_FILES openvdb_print.cc) + add_executable(vdb_print ${VDB_PRINT_SOURCE_FILES}) + target_link_libraries(vdb_print ${OPENVDB_BINARIES_DEPENDENT_LIBS}) + + if(OPENVDB_ENABLE_RPATH) + set_target_properties(vdb_print + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) + endif() + + install(TARGETS vdb_print DESTINATION bin) +endif() + +########################################################################## + +#### vdb_lod + +if(OPENVDB_BUILD_VDB_LOD) + set(VDB_LOD_SOURCE_FILES openvdb_lod.cc) + add_executable(vdb_lod ${VDB_LOD_SOURCE_FILES}) + target_link_libraries(vdb_lod ${OPENVDB_BINARIES_DEPENDENT_LIBS}) + + if(OPENVDB_ENABLE_RPATH) + set_target_properties(vdb_lod + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) + endif() + + install(TARGETS vdb_lod DESTINATION bin) +endif() + +########################################################################## + +#### vdb_render + +if(OPENVDB_BUILD_VDB_RENDER) + find_package(IlmBase ${MINIMUM_ILMBASE_VERSION} REQUIRED COMPONENTS Half Iex IlmThread) + find_package(OpenEXR ${MINIMUM_OPENEXR_VERSION} REQUIRED COMPONENTS IlmImf) + + set(VDB_RENDER_SOURCE_FILES openvdb_render.cc) + add_executable(vdb_render ${VDB_RENDER_SOURCE_FILES}) + + # Set deps. Note that the order here is important. If we're building against + # Houdini 17.5 we must include OpenEXR and IlmBase deps first to ensure the + # users chosen namespaced headers are correctly prioritized. Otherwise other + # include paths from shared installs (including houdini) may pull in the wrong + # headers + + target_link_libraries(vdb_render + OpenEXR::IlmImf + IlmBase::IlmThread + IlmBase::Iex + ${OPENVDB_BINARIES_DEPENDENT_LIBS} + ) + + if(OPENVDB_ENABLE_RPATH) + set(OPENVDB_RENDER_RPATHS) + list(APPEND OPENVDB_RENDER_RPATHS + ${OpenEXR_LIBRARY_DIRS} + ${RPATHS} + ) + list(REMOVE_DUPLICATES OPENVDB_RENDER_RPATHS) + + set_target_properties(vdb_render + PROPERTIES INSTALL_RPATH "${OPENVDB_RENDER_RPATHS}" + ) + unset(OPENVDB_RENDER_RPATHS) + endif() + + install(TARGETS vdb_render DESTINATION bin) +endif() + +########################################################################## + +#### vdb_view + +if(OPENVDB_BUILD_VDB_VIEW) + + # @todo improve the viewer header system + + file(GLOB VIEWER_SOURCE_FILES ../viewer/*.h) + file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/dwa/openvdb_viewer) + file(COPY ${VIEWER_SOURCE_FILES} DESTINATION ${CMAKE_BINARY_DIR}/dwa/openvdb_viewer) + + if(WIN32) + message(WARNING "Currently no CMake support for building vdb_view binary on Windows.") + # @todo + # find_package(GLEW REQUIRED) + # INCLUDE_DIRECTORIES ( SYSTEM ${GLEW_INCLUDE_DIR}) + else() + find_package(Boost ${MINIMUM_BOOST_VERSION} REQUIRED COMPONENTS thread) + find_package(OpenGL REQUIRED) + + # wraps find_package(glfw3) and sets the glfw target + include(OpenVDBGLFW3Setup) + + set(VDB_VIEW_SOURCE_FILES + openvdb_view.cc + ../viewer/Camera.cc + ../viewer/ClipBox.cc + ../viewer/Font.cc + ../viewer/RenderModules.cc + ../viewer/Viewer.cc + ) + + add_executable(vdb_view ${VDB_VIEW_SOURCE_FILES}) + + target_include_directories(vdb_view + PRIVATE ${CMAKE_BINARY_DIR}/dwa + ) + + target_link_libraries(vdb_view + ${OPENVDB_BINARIES_DEPENDENT_LIBS} + Boost::thread + OpenGL::GL + OpenGL::GLU + glfw + ) + + target_compile_definitions(vdb_view PRIVATE + "-DOPENVDB_USE_GLFW_3" "-DGL_GLEXT_PROTOTYPES=1" + ) + + if(OPENVDB_ENABLE_RPATH) + set_target_properties(vdb_view + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) + endif() + + install(TARGETS vdb_view DESTINATION bin) + endif() +endif() + +unset(RPATHS) diff --git a/openvdb/cmd/openvdb_lod.cc b/openvdb/cmd/openvdb_lod.cc new file mode 100644 index 00000000..ff174da7 --- /dev/null +++ b/openvdb/cmd/openvdb_lod.cc @@ -0,0 +1,358 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include // for boost::is_any_of() +#include +#include // for std::atof() +#include // for std::setprecision() +#include +#include +#include +#include // for std::runtime_error +#include + + +namespace { + +const char* gProgName = ""; + +inline void +usage [[noreturn]] (int exitStatus = EXIT_FAILURE) +{ + std::cerr << +"Usage: " << gProgName << " in.vdb out.vdb -range FROM[-TO[:STEP]] [options]\n" << +"Which: generates a volume mipmap from an OpenVDB grid\n" << +"Where:\n" << +" FROM is the highest-resolution mip level to be generated\n" << +" TO is the lowest-resolution mip level to be generated (default: FROM)\n" << +" STEP is the mip level step size (default: 1)\n" << +"Options:\n" << +" -name S[,S,S,...] name(s) of the grid(s) to be processed\n" << +" (default: process all grids of supported types)\n" << +" -keep pass through grids that were not processed\n" << +" (default: discard grids that were not processed)\n" << +" -nokeep cancel an earlier -keep option\n" << +" -p, -preserve if only one mip level is generated, give it the same\n" << +" name as the original grid (default: name each level\n" << +" \"NAME_level_N\", where NAME is the original grid name\n" << +" and N is the level number, e.g., \"density_level_0\")\n" << +" -nopreserve cancel an earlier -p or -preserve option\n" << +" -version print version information\n" << +"\n" << +"Mip level 0 is the input grid. Each successive integer level is half\n" << +"the resolution of the previous level. Fractional levels are supported.\n" << +"\n" << +"Examples:\n" << +" Generate levels 0, 1, and 2 (full resolution, half resolution,\n" << +" and quarter resolution, respectively) for all grids of supported types\n" << +" and ignore all other grids:\n" << +"\n" << +" " << gProgName << " in.vdb out.vdb -range 0-2\n" << +"\n" << +" Generate levels 0, 0.5, and 1 for all grids of supported types\n" << +" and pass through all other grids:\n" << +"\n" << +" " << gProgName << " in.vdb out.vdb -range 0-1:0.5 -keep\n" << +"\n" << +" Generate level 3 for the first of multiple grids named \"density\":\n" << +"\n" << +" " << gProgName << " in.vdb out.vdb -range 3 -name 'density[0]'\n" << +"\n" << +" Generate level 1.5 for the second of multiple unnamed grids and for\n" << +" the grid named \"velocity\" and give the resulting grids the same names\n"<< +" as the original grids:\n" << +"\n" << +" " << gProgName << " in.vdb out.vdb -range 1.5 -name '[1],velocity' -p\n" << +"\n"; + exit(exitStatus); +} + + +struct Options +{ + Options(): from(0.0), to(0.0), step(1.0), keep(false), preserve(false) {} + + double from, to, step; + bool keep, preserve; +}; + + +/// @brief Parse a string of the form "from-to:step" and populate the given @a opts +/// with the resulting values. +/// @throw std::runtime_error if parsing fails for any reason +inline void +parseRangeSpec(const std::string& rangeSpec, Options& opts) +{ + // Split on the "-" character, of which there should be at most one. + std::vector rangeItems; + boost::split(rangeItems, rangeSpec, boost::is_any_of("-")); + if (rangeItems.empty() || rangeItems.size() > 2) throw std::runtime_error(""); + + // Extract the "from" value, and default "to" to "from" and "step" to 1. + opts.from = opts.to = std::atof(rangeItems[0].c_str()); + opts.step = 1.0; + + if (rangeItems.size() > 1) { + // Split on the ":" character, of which there should be at most one. + const std::string item = rangeItems[1]; + boost::split(rangeItems, item, boost::is_any_of(":")); + if (rangeItems.empty() || rangeItems.size() > 2) throw std::runtime_error(""); + + // Extract the "to" value. + opts.to = std::atof(rangeItems[0].c_str()); + if (rangeItems.size() > 1) { + // Extract the "step" value. + opts.step = std::atof(rangeItems[1].c_str()); + } + } + + if (opts.from < 0.0 || opts.to < opts.from || opts.step <= 0.0) throw std::runtime_error(""); +} + + +/// @brief Mipmap a single grid of a fully-resolved type. +/// @return a vector of pointers to the member grids of the mipmap +template +inline openvdb::GridPtrVec +mip(const GridType& inGrid, const Options& opts) +{ + OPENVDB_LOG_INFO("processing grid \"" << inGrid.getName() << "\""); + + // MultiResGrid requires at least two mipmap levels, starting from level 0. + const int levels = std::max(2, openvdb::math::Ceil(opts.to) + 1); + + openvdb::util::CpuTimer timer; + timer.start(); + + // Initialize the mipmap. + typedef typename GridType::TreeType TreeT; + openvdb::tools::MultiResGrid mrg(levels, inGrid); + + openvdb::GridPtrVec outGrids; + for (double level = opts.from; level <= opts.to; level += opts.step) { + // Request a level from the mipmap. + if (openvdb::GridBase::Ptr levelGrid = + mrg.template createGrid(static_cast(level))) + { + outGrids.push_back(levelGrid); + } + } + + if (outGrids.size() == 1 && opts.preserve) { + // If -preserve is in effect and there is only one output grid, + // give it the same name as the input grid. + outGrids[0]->setName(inGrid.getName()); + } + + OPENVDB_LOG_INFO("processed grid \"" << inGrid.getName() << "\" in " + << std::setprecision(3) << timer.seconds() << " sec"); + + return outGrids; +} + + +/// @brief Mipmap a single grid and append the resulting grids to @a outGrids. +inline void +process(const openvdb::GridBase::Ptr& baseGrid, openvdb::GridPtrVec& outGrids, const Options& opts) +{ + using namespace openvdb; + + if (!baseGrid) return; + + GridPtrVec mipmap; + if (FloatGrid::Ptr g0 = GridBase::grid(baseGrid)) { mipmap = mip(*g0, opts); } + else if (DoubleGrid::Ptr g1 = GridBase::grid(baseGrid)) { mipmap = mip(*g1, opts); } + else if (Vec3SGrid::Ptr g2 = GridBase::grid(baseGrid)) { mipmap = mip(*g2, opts); } + else if (Vec3DGrid::Ptr g3 = GridBase::grid(baseGrid)) { mipmap = mip(*g3, opts); } + else if (Vec3IGrid::Ptr g4 = GridBase::grid(baseGrid)) { mipmap = mip(*g4, opts); } + else if (Int32Grid::Ptr g5 = GridBase::grid(baseGrid)) { mipmap = mip(*g5, opts); } + else if (Int64Grid::Ptr g6 = GridBase::grid(baseGrid)) { mipmap = mip(*g6, opts); } + else if (BoolGrid::Ptr g7 = GridBase::grid(baseGrid)) { mipmap = mip(*g7, opts); } + else if (MaskGrid::Ptr g8 = GridBase::grid(baseGrid)) { mipmap = mip(*g8, opts); } + else { + std::string operation = "skipped"; + if (opts.keep) { + operation = "passed through"; + outGrids.push_back(baseGrid); + }; + OPENVDB_LOG_WARN(operation << " grid \"" << baseGrid->getName() + << "\" of unsupported type " << baseGrid->type()); + } + outGrids.insert(outGrids.end(), mipmap.begin(), mipmap.end()); +} + +} // unnamed namespace + + +int +main(int argc, char *argv[]) +{ + OPENVDB_START_THREADSAFE_STATIC_WRITE + gProgName = argv[0]; + if (const char* ptr = ::strrchr(gProgName, '/')) gProgName = ptr + 1; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + + int exitStatus = EXIT_SUCCESS; + + if (argc == 1) usage(); + + openvdb::logging::initialize(argc, argv); + openvdb::initialize(); + + // Parse command-line arguments. + Options opts; + bool version = false; + std::string inFilename, outFilename, gridNameStr, rangeSpec; + for (int i = 1; i < argc; ++i) { + const std::string arg = argv[i]; + if (arg[0] == '-') { + if (arg == "-name") { + if (i + 1 < argc && argv[i + 1]) { + gridNameStr = argv[i + 1]; + ++i; + } else { + OPENVDB_LOG_FATAL("missing grid name(s) after -name"); + usage(); + } + } else if (arg == "-keep") { + opts.keep = true; + } else if (arg == "-nokeep") { + opts.keep = false; + } else if (arg == "-p" || arg == "-preserve") { + opts.preserve = true; + } else if (arg == "-nopreserve") { + opts.preserve = false; + } else if (arg == "-range") { + if (i + 1 < argc && argv[i + 1]) { + rangeSpec = argv[i + 1]; + ++i; + } else { + OPENVDB_LOG_FATAL("missing level range specification after -range"); + usage(); + } + } else if (arg == "-h" || arg == "-help" || arg == "--help") { + usage(EXIT_SUCCESS); + } else if (arg == "-version" || arg == "--version") { + version = true; + } else { + OPENVDB_LOG_FATAL("\"" << arg << "\" is not a valid option"); + usage(); + } + } else if (!arg.empty()) { + if (inFilename.empty()) { + inFilename = arg; + } else if (outFilename.empty()) { + outFilename = arg; + } else { + OPENVDB_LOG_FATAL("unrecognized argument \"" << arg << "\""); + usage(); + } + } + } + + if (version) { + std::cout << "OpenVDB library version: " + << openvdb::getLibraryAbiVersionString() << "\n"; + std::cout << "OpenVDB file format version: " + << openvdb::OPENVDB_FILE_VERSION << std::endl; + if (outFilename.empty()) return EXIT_SUCCESS; + } + + if (inFilename.empty()) { + OPENVDB_LOG_FATAL("missing input OpenVDB filename"); + usage(); + } + if (outFilename.empty()) { + OPENVDB_LOG_FATAL("missing output OpenVDB filename"); + usage(); + } + if (rangeSpec.empty()) { + OPENVDB_LOG_FATAL("missing level range specification"); + usage(); + } + + try { + parseRangeSpec(rangeSpec, opts); + } catch (...) { + OPENVDB_LOG_FATAL("invalid level range specification \"" << rangeSpec << "\""); + usage(); + } + + // If -name was specified, generate a white list of names of grids to be processed. + // Otherwise (if the white list is empty), process all grids of supported types. + std::set whitelist; + if (!gridNameStr.empty()) { + boost::split(whitelist, gridNameStr, boost::is_any_of(",")); + } + + // Process the input file. + try { + openvdb::io::File file(inFilename); + file.open(); + + const openvdb::MetaMap::ConstPtr fileMetadata = file.getMetadata(); + + openvdb::GridPtrVec outGrids; + + // For each input grid... + for (openvdb::io::File::NameIterator nameIter = file.beginName(); + nameIter != file.endName(); ++nameIter) + { + const std::string& name = nameIter.gridName(); + // If there is a white list, check if the grid is on the list. + const bool skip = (!whitelist.empty() && (whitelist.find(name) == whitelist.end())); + + if (skip && !opts.keep) { + OPENVDB_LOG_INFO("skipped grid \"" << name << "\""); + } else { + // If the grid's name is on the white list or if -keep is in effect, read the grid. + openvdb::GridBase::Ptr baseGrid = file.readGrid(name); + if (!baseGrid) { + OPENVDB_LOG_WARN("failed to read grid \"" << name << "\""); + } else { + if (skip) { + OPENVDB_LOG_INFO("passed through grid \"" << name << "\""); + outGrids.push_back(baseGrid); + } else { + process(baseGrid, outGrids, opts); + } + } + } + } + file.close(); + + openvdb::util::CpuTimer timer; + timer.start(); + + openvdb::io::File outFile(outFilename); + if (fileMetadata) { + outFile.write(outGrids, *fileMetadata); + } else { + outFile.write(outGrids); + } + + const double msec = timer.milliseconds(); // elapsed time + + if (outGrids.empty()) { + OPENVDB_LOG_WARN("wrote empty file " << outFilename << " in " + << std::setprecision(3) << (msec / 1000.0) << " sec"); + } else { + OPENVDB_LOG_INFO("wrote file " << outFilename << " in " + << std::setprecision(3) << (msec / 1000.0) << " sec"); + } + } + catch (const std::exception& e) { + OPENVDB_LOG_FATAL(e.what()); + exitStatus = EXIT_FAILURE; + } + catch (...) { + OPENVDB_LOG_FATAL("Exception caught (unexpected type)"); + std::unexpected(); + } + + return exitStatus; +} diff --git a/openvdb/cmd/openvdb_print.cc b/openvdb/cmd/openvdb_print.cc new file mode 100644 index 00000000..d75e3c49 --- /dev/null +++ b/openvdb/cmd/openvdb_print.cc @@ -0,0 +1,315 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace { + +using StringVec = std::vector; + +const char* INDENT = " "; +const char* gProgName = ""; + +void +usage [[noreturn]] (int exitStatus = EXIT_FAILURE) +{ + std::cerr << +"Usage: " << gProgName << " in.vdb [in.vdb ...] [options]\n" << +"Which: prints information about OpenVDB grids\n" << +"Options:\n" << +" -l, -stats long printout, including grid statistics\n" << +" -m, -metadata print per-file and per-grid metadata\n" << +" -version print version information\n"; + exit(exitStatus); +} + + +std::string +sizeAsString(openvdb::Index64 n, const std::string& units) +{ + std::ostringstream ostr; + ostr << std::setprecision(3); + if (n < 1000) { + ostr << n; + } else if (n < 1000000) { + ostr << (double(n) / 1.0e3) << "K"; + } else if (n < 1000000000) { + ostr << (double(n) / 1.0e6) << "M"; + } else { + ostr << (double(n) / 1.0e9) << "G"; + } + ostr << units; + return ostr.str(); +} + + +std::string +bytesAsString(openvdb::Index64 n) +{ + std::ostringstream ostr; + ostr << std::setprecision(3); + if (n >> 30) { + ostr << (double(n) / double(uint64_t(1) << 30)) << "GB"; + } else if (n >> 20) { + ostr << (double(n) / double(uint64_t(1) << 20)) << "MB"; + } else if (n >> 10) { + ostr << (double(n) / double(uint64_t(1) << 10)) << "KB"; + } else { + ostr << n << "B"; + } + return ostr.str(); +} + + +std::string +coordAsString(const openvdb::Coord ijk, const std::string& sep, + const std::string& start, const std::string& stop) +{ + std::ostringstream ostr; + ostr << start << ijk[0] << sep << ijk[1] << sep << ijk[2] << stop; + return ostr.str(); +} + + +std::string +bkgdValueAsString(const openvdb::GridBase::ConstPtr& grid) +{ + std::ostringstream ostr; + if (grid) { + const openvdb::TreeBase& tree = grid->baseTree(); + ostr << "background: "; + openvdb::Metadata::Ptr background = tree.getBackgroundValue(); + if (background) ostr << background->str(); + } + return ostr.str(); +} + + +/// Print detailed information about the given VDB files. +/// If @a metadata is true, include file-level metadata key, value pairs. +void +printLongListing(const StringVec& filenames) +{ + bool oneFile = (filenames.size() == 1), firstFile = true; + + for (size_t i = 0, N = filenames.size(); i < N; ++i, firstFile = false) { + openvdb::io::File file(filenames[i]); + std::string version; + openvdb::GridPtrVecPtr grids; + openvdb::MetaMap::Ptr meta; + try { + file.open(); + grids = file.getGrids(); + meta = file.getMetadata(); + version = file.version(); + file.close(); + } catch (openvdb::Exception& e) { + OPENVDB_LOG_ERROR(e.what() << " (" << filenames[i] << ")"); + } + if (!grids) continue; + + if (!oneFile) { + if (!firstFile) { + std::cout << "\n" << std::string(40, '-') << "\n\n"; + } + std::cout << filenames[i] << "\n\n"; + } + + // Print file-level metadata. + std::cout << "VDB version: " << version << "\n"; + if (meta) { + std::string str = meta->str(); + if (!str.empty()) std::cout << str << "\n"; + } + std::cout << "\n"; + + // For each grid in the file... + bool firstGrid = true; + for (openvdb::GridPtrVec::const_iterator it = grids->begin(); it != grids->end(); ++it) { + if (openvdb::GridBase::ConstPtr grid = *it) { + if (!firstGrid) std::cout << "\n\n"; + std::cout << "Name: " << grid->getName() << std::endl; + grid->print(std::cout, /*verboseLevel=*/11); + firstGrid = false; + } + } + } +} + + +/// Print condensed information about the given VDB files. +/// If @a metadata is true, include file- and grid-level metadata. +void +printShortListing(const StringVec& filenames, bool metadata) +{ + bool oneFile = (filenames.size() == 1), firstFile = true; + + for (size_t i = 0, N = filenames.size(); i < N; ++i, firstFile = false) { + const std::string + indent(oneFile ? "": INDENT), + indent2(indent + INDENT); + + if (!oneFile) { + if (metadata && !firstFile) std::cout << "\n"; + std::cout << filenames[i] << ":\n"; + } + + openvdb::GridPtrVecPtr grids; + openvdb::MetaMap::Ptr meta; + + openvdb::io::File file(filenames[i]); + try { + file.open(); + grids = file.getGrids(); + meta = file.getMetadata(); + file.close(); + } catch (openvdb::Exception& e) { + OPENVDB_LOG_ERROR(e.what() << " (" << filenames[i] << ")"); + } + if (!grids) continue; + + if (metadata) { + // Print file-level metadata. + std::string str = meta->str(indent); + if (!str.empty()) std::cout << str << "\n"; + } + + // For each grid in the file... + for (openvdb::GridPtrVec::const_iterator it = grids->begin(); it != grids->end(); ++it) { + const openvdb::GridBase::ConstPtr grid = *it; + if (!grid) continue; + + // Print the grid name and its voxel value datatype. + std::cout << indent << std::left << std::setw(11) << grid->getName() + << " " << std::right << std::setw(6) << grid->valueType(); + + // Print the grid's bounding box and dimensions. + openvdb::CoordBBox bbox = grid->evalActiveVoxelBoundingBox(); + std::string + boxStr = coordAsString(bbox.min(), ",", "(", ")") + "->" + + coordAsString(bbox.max(), ",", "(", ")"), + dimStr = coordAsString(bbox.extents(), "x", "", ""); + boxStr += std::string( + std::max(1, int(40 - boxStr.size() - dimStr.size())), ' ') + dimStr; + std::cout << " " << std::left << std::setw(40) << boxStr; + + // Print the number of active voxels. + std::cout << " " << std::right << std::setw(8) + << sizeAsString(grid->activeVoxelCount(), "Vox"); + + // Print the grid's in-core size, in bytes. + std::cout << " " << std::right << std::setw(6) << bytesAsString(grid->memUsage()); + + std::cout << std::endl; + + // Print grid-specific metadata. + if (metadata) { + // Print background value. + std::string str = bkgdValueAsString(grid); + if (!str.empty()) { + std::cout << indent2 << str << "\n"; + } + // Print local and world transforms. + grid->transform().print(std::cout, indent2); + // Print custom metadata. + str = grid->str(indent2); + if (!str.empty()) std::cout << str << "\n"; + std::cout << std::flush; + } + } + } +} + +} // unnamed namespace + + +int +main(int argc, char *argv[]) +{ + OPENVDB_START_THREADSAFE_STATIC_WRITE + gProgName = argv[0]; + if (const char* ptr = ::strrchr(gProgName, '/')) gProgName = ptr + 1; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + + int exitStatus = EXIT_SUCCESS; + + if (argc == 1) usage(); + + openvdb::logging::initialize(argc, argv); + + bool stats = false, metadata = false, version = false; + StringVec filenames; + for (int i = 1; i < argc; ++i) { + std::string arg = argv[i]; + if (arg[0] == '-') { + if (arg == "-m" || arg == "-metadata") { + metadata = true; + } else if (arg == "-l" || arg == "-stats") { + stats = true; + } else if (arg == "-h" || arg == "-help" || arg == "--help") { + usage(EXIT_SUCCESS); + } else if (arg == "-version" || arg == "--version") { + version = true; + } else { + OPENVDB_LOG_FATAL("\"" << arg << "\" is not a valid option"); + usage(); + } + } else if (!arg.empty()) { + filenames.push_back(arg); + } + } + + if (version) { + std::cout << "OpenVDB library version: " + << openvdb::getLibraryAbiVersionString() << "\n"; + std::cout << "OpenVDB file format version: " + << openvdb::OPENVDB_FILE_VERSION << std::endl; + if (filenames.empty()) return EXIT_SUCCESS; + } + + if (filenames.empty()) { + OPENVDB_LOG_FATAL("expected one or more OpenVDB files"); + usage(); + } + + try { + openvdb::initialize(); + + /// @todo Remove the following at some point: + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + openvdb::Grid::Type>::registerGrid(); + + if (stats) { + printLongListing(filenames); + } else { + printShortListing(filenames, metadata); + } + } + catch (const std::exception& e) { + OPENVDB_LOG_FATAL(e.what()); + exitStatus = EXIT_FAILURE; + } + catch (...) { + OPENVDB_LOG_FATAL("Exception caught (unexpected type)"); + } + + return exitStatus; +} diff --git a/openvdb/cmd/openvdb_render.cc b/openvdb/cmd/openvdb_render.cc new file mode 100644 index 00000000..012fdea4 --- /dev/null +++ b/openvdb/cmd/openvdb_render.cc @@ -0,0 +1,691 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file main.cc +/// +/// @brief Simple ray tracer for OpenVDB volumes +/// +/// @note This is intended mainly as an example of how to ray-trace +/// OpenVDB volumes. It is not a production-quality renderer. + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include // defines OPENEXR_DLL if required, must come before OpenEXR includes +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace { + +const char* gProgName = ""; + +const double LIGHT_DEFAULTS[] = { 0.3, 0.3, 0.0, 0.7, 0.7, 0.7 }; + + +struct RenderOpts +{ + std::string shader; + std::string color; + openvdb::Vec3SGrid::Ptr colorgrid; + std::string camera; + float aperture, focal, frame, znear, zfar; + double isovalue; + openvdb::Vec3d rotate; + openvdb::Vec3d translate; + openvdb::Vec3d target; + openvdb::Vec3d up; + bool lookat; + size_t samples; + openvdb::Vec3d absorb; + std::vector light; + openvdb::Vec3d scatter; + double cutoff, gain; + openvdb::Vec2d step; + size_t width, height; + std::string compression; + int threads; + bool verbose; + + RenderOpts(): + shader("diffuse"), + camera("perspective"), + aperture(41.2136f), + focal(50.0f), + frame(1.0f), + znear(1.0e-3f), + zfar(std::numeric_limits::max()), + isovalue(0.0), + rotate(0.0), + translate(0.0), + target(0.0), + up(0.0, 1.0, 0.0), + lookat(false), + samples(1), + absorb(0.1), + light(LIGHT_DEFAULTS, LIGHT_DEFAULTS + 6), + scatter(1.5), + cutoff(0.005), + gain(0.2), + step(1.0, 3.0), + width(1920), + height(1080), + compression("zip"), + threads(0), + verbose(false) + {} + + std::string validate() const + { + if (shader != "diffuse" && shader != "matte" && shader != "normal" && shader != "position"){ + return "expected diffuse, matte, normal or position shader, got \"" + shader + "\""; + } + if (!boost::starts_with(camera, "ortho") && !boost::starts_with(camera, "persp")) { + return "expected perspective or orthographic camera, got \"" + camera + "\""; + } + if (compression != "none" && compression != "rle" && compression != "zip") { + return "expected none, rle or zip compression, got \"" + compression + "\""; + } + if (width < 1 || height < 1) { + std::ostringstream ostr; + ostr << "expected width > 0 and height > 0, got " << width << "x" << height; + return ostr.str(); + } + return ""; + } + + std::ostream& put(std::ostream& os) const + { + os << " -absorb " << absorb[0] << "," << absorb[1] << "," << absorb[2] + << " -aperture " << aperture + << " -camera " << camera; + if (!color.empty()) os << " -color '" << color << "'"; + os << " -compression " << compression + << " -cpus " << threads + << " -cutoff " << cutoff + << " -far " << zfar + << " -focal " << focal + << " -frame " << frame + << " -gain " << gain + << " -isovalue " << isovalue + << " -light " << light[0] << "," << light[1] << "," << light[2] + << "," << light[3] << "," << light[4] << "," << light[5]; + if (lookat) os << " -lookat " << target[0] << "," << target[1] << "," << target[2]; + os << " -near " << znear + << " -res " << width << "x" << height; + if (!lookat) os << " -rotate " << rotate[0] << "," << rotate[1] << "," << rotate[2]; + os << " -shader " << shader + << " -samples " << samples + << " -scatter " << scatter[0] << "," << scatter[1] << "," << scatter[2] + << " -shadowstep " << step[1] + << " -step " << step[0] + << " -translate " << translate[0] << "," << translate[1] << "," << translate[2]; + if (lookat) os << " -up " << up[0] << "," << up[1] << "," << up[2]; + if (verbose) os << " -v"; + return os; + } +}; + +std::ostream& operator<<(std::ostream& os, const RenderOpts& opts) { return opts.put(os); } + + +void +usage [[noreturn]] (int exitStatus = EXIT_FAILURE) +{ + RenderOpts opts; // default options + const double fov = openvdb::tools::PerspectiveCamera::focalLengthToFieldOfView( + opts.focal, opts.aperture); + + std::ostringstream ostr; + ostr << std::setprecision(3) << +"Usage: " << gProgName << " in.vdb out.{exr,ppm} [options]\n" << +"Which: ray-traces OpenVDB volumes\n" << +"Options:\n" << +" -aperture F perspective camera aperture in mm (default: " << opts.aperture << ")\n" << +" -camera S camera type; either \"persp[ective]\" or \"ortho[graphic]\"\n" << +" (default: " << opts.camera << ")\n" << +" -compression S EXR compression scheme; either \"none\" (uncompressed),\n" << +" \"rle\" or \"zip\" (default: " << opts.compression << ")\n" << +" -cpus N number of rendering threads, or 1 to disable threading,\n" << +" or 0 to use all available CPUs (default: " << opts.threads << ")\n" << +" -far F camera far plane depth (default: " << opts.zfar << ")\n" << +" -focal F perspective camera focal length in mm (default: " << opts.focal << ")\n" << +" -fov F perspective camera field of view in degrees\n" << +" (default: " << fov << ")\n" << +" -frame F ortho camera frame width in world units (default: " << + opts.frame << ")\n" << +" -lookat X,Y,Z rotate the camera to point to (X, Y, Z)\n" << +" -name S name of the volume to be rendered (default: render\n" << +" the first floating-point volume found in in.vdb)\n" << +" -near F camera near plane depth (default: " << opts.znear << ")\n" << +" -res WxH image dimensions in pixels (default: " << + opts.width << "x" << opts.height << ")\n" << +" -r X,Y,Z \n" << +" -rotate X,Y,Z camera rotation in degrees\n" << +" (default: look at the center of the volume)\n" << +" -t X,Y,Z \n" << +" -translate X,Y,Z camera translation\n" << +" -up X,Y,Z vector that should point up after rotation with -lookat\n" << +" (default: " << opts.up << ")\n" << +"\n" << +" -v verbose (print timing and diagnostics)\n" << +" -version print version information and exit\n" << +" -h, -help print this usage message and exit\n" << +"\n" << +"Level set options:\n" << +" -color S name of a vec3s volume to be used to set material colors\n" << +" -isovalue F isovalue in world units for level set ray intersection\n" << +" (default: " << opts.isovalue << ")\n" << +" -samples N number of samples (rays) per pixel (default: " << opts.samples << ")\n" << +" -shader S shader name; either \"diffuse\", \"matte\", \"normal\"\n" << +" or \"position\" (default: " << opts.shader << ")\n" << +"\n" << +"Dense volume options:\n" << +" -absorb R,G,B absorption coefficients (default: " << opts.absorb << ")\n" << +" -cutoff F density and transmittance cutoff value (default: " << opts.cutoff << ")\n" << +" -gain F amount of scatter along the shadow ray (default: " << opts.gain << ")\n" << +" -light X,Y,Z[,R,G,B] light source direction and optional color\n" << +" (default: [" << opts.light[0] << ", " << opts.light[1] + << ", " << opts.light[2] << ", " << opts.light[3] << ", " << opts.light[4] + << ", " << opts.light[5] << "])\n" << +" -scatter R,G,B scattering coefficients (default: " << opts.scatter << ")\n" << +" -shadowstep F step size in voxels for integration along the shadow ray\n" << +" (default: " << opts.step[1] << ")\n" << +" -step F step size in voxels for integration along the primary ray\n" << +" (default: " << opts.step[0] << ")\n" << +"\n" << +"Examples:\n" << +" " << gProgName << " crawler.vdb crawler.exr -shader diffuse -res 1920x1080 \\\n" << +" -focal 35 -samples 4 -translate 0,210.5,400 -compression rle -v\n" << +"\n" << +" " << gProgName << " bunny_cloud.vdb bunny_cloud.exr -res 1920x1080 \\\n" << +" -translate 0,0,110 -absorb 0.4,0.2,0.1 -gain 0.2 -v\n" << +"\n" << +"Warning:\n" << +" This is not (and is not intended to be) a production-quality renderer.\n" << +" Use it for fast previewing or simply as a reference implementation\n" << +" for integration into existing ray tracers.\n"; + + std::cerr << ostr.str(); + exit(exitStatus); +} + + +void +saveEXR(const std::string& fname, const openvdb::tools::Film& film, const RenderOpts& opts) +{ + using RGBA = openvdb::tools::Film::RGBA; + + std::string filename = fname; + if (!boost::iends_with(filename, ".exr")) filename += ".exr"; + + if (opts.verbose) { + std::cout << gProgName << ": writing " << filename << "..." << std::endl; + } + + const tbb::tick_count start = tbb::tick_count::now(); + + int threads = (opts.threads == 0 ? 8 : opts.threads); + Imf::setGlobalThreadCount(threads); + + Imf::Header header(int(film.width()), int(film.height())); + if (opts.compression == "none") { + header.compression() = Imf::NO_COMPRESSION; + } else if (opts.compression == "rle") { + header.compression() = Imf::RLE_COMPRESSION; + } else if (opts.compression == "zip") { + header.compression() = Imf::ZIP_COMPRESSION; + } else { + OPENVDB_THROW(openvdb::ValueError, + "expected none, rle or zip compression, got \"" << opts.compression << "\""); + } + header.channels().insert("R", Imf::Channel(Imf::FLOAT)); + header.channels().insert("G", Imf::Channel(Imf::FLOAT)); + header.channels().insert("B", Imf::Channel(Imf::FLOAT)); + header.channels().insert("A", Imf::Channel(Imf::FLOAT)); + + const size_t pixelBytes = sizeof(RGBA), rowBytes = pixelBytes * film.width(); + RGBA& pixel0 = const_cast(film.pixels())[0]; + Imf::FrameBuffer framebuffer; + framebuffer.insert("R", + Imf::Slice(Imf::FLOAT, reinterpret_cast(&pixel0.r), pixelBytes, rowBytes)); + framebuffer.insert("G", + Imf::Slice(Imf::FLOAT, reinterpret_cast(&pixel0.g), pixelBytes, rowBytes)); + framebuffer.insert("B", + Imf::Slice(Imf::FLOAT, reinterpret_cast(&pixel0.b), pixelBytes, rowBytes)); + framebuffer.insert("A", + Imf::Slice(Imf::FLOAT, reinterpret_cast(&pixel0.a), pixelBytes, rowBytes)); + + Imf::OutputFile imgFile(filename.c_str(), header); + imgFile.setFrameBuffer(framebuffer); + imgFile.writePixels(int(film.height())); + + if (opts.verbose) { + std::ostringstream ostr; + ostr << gProgName << ": ...completed in " << std::setprecision(3) + << (tbb::tick_count::now() - start).seconds() << " sec"; + std::cout << ostr.str() << std::endl; + } +} + + +template +void +render(const GridType& grid, const std::string& imgFilename, const RenderOpts& opts) +{ + using namespace openvdb; + + const bool isLevelSet = (grid.getGridClass() == GRID_LEVEL_SET); + + tools::Film film(opts.width, opts.height); + + std::unique_ptr camera; + if (boost::starts_with(opts.camera, "persp")) { + camera.reset(new tools::PerspectiveCamera(film, opts.rotate, opts.translate, + opts.focal, opts.aperture, opts.znear, opts.zfar)); + } else if (boost::starts_with(opts.camera, "ortho")) { + camera.reset(new tools::OrthographicCamera(film, opts.rotate, opts.translate, + opts.frame, opts.znear, opts.zfar)); + } else { + OPENVDB_THROW(ValueError, + "expected perspective or orthographic camera, got \"" << opts.camera << "\""); + } + if (opts.lookat) camera->lookAt(opts.target, opts.up); + + // Define the shader for level set rendering. The default shader is a diffuse shader. + std::unique_ptr shader; + if (opts.shader == "matte") { + if (opts.colorgrid) { + shader.reset(new tools::MatteShader(*opts.colorgrid)); + } else { + shader.reset(new tools::MatteShader<>()); + } + } else if (opts.shader == "normal") { + if (opts.colorgrid) { + shader.reset(new tools::NormalShader(*opts.colorgrid)); + } else { + shader.reset(new tools::NormalShader<>()); + } + } else if (opts.shader == "position") { + const CoordBBox bbox = grid.evalActiveVoxelBoundingBox(); + const math::BBox bboxIndex(bbox.min().asVec3d(), bbox.max().asVec3d()); + const math::BBox bboxWorld = bboxIndex.applyMap(*(grid.transform().baseMap())); + if (opts.colorgrid) { + shader.reset(new tools::PositionShader(bboxWorld, *opts.colorgrid)); + } else { + shader.reset(new tools::PositionShader<>(bboxWorld)); + } + } else /* if (opts.shader == "diffuse") */ { // default + if (opts.colorgrid) { + shader.reset(new tools::DiffuseShader(*opts.colorgrid)); + } else { + shader.reset(new tools::DiffuseShader<>()); + } + } + + if (opts.verbose) { + std::cout << gProgName << ": ray-tracing"; + const std::string gridName = grid.getName(); + if (!gridName.empty()) std::cout << " " << gridName; + std::cout << "..." << std::endl; + } + const tbb::tick_count start = tbb::tick_count::now(); + + if (isLevelSet) { + tools::LevelSetRayIntersector intersector( + grid, static_cast(opts.isovalue)); + tools::rayTrace(grid, intersector, *shader, *camera, opts.samples, + /*seed=*/0, (opts.threads != 1)); + } else { + using IntersectorType = tools::VolumeRayIntersector; + IntersectorType intersector(grid); + + tools::VolumeRender renderer(intersector, *camera); + renderer.setLightDir(opts.light[0], opts.light[1], opts.light[2]); + renderer.setLightColor(opts.light[3], opts.light[4], opts.light[5]); + renderer.setPrimaryStep(opts.step[0]); + renderer.setShadowStep(opts.step[1]); + renderer.setScattering(opts.scatter[0], opts.scatter[1], opts.scatter[2]); + renderer.setAbsorption(opts.absorb[0], opts.absorb[1], opts.absorb[2]); + renderer.setLightGain(opts.gain); + renderer.setCutOff(opts.cutoff); + + renderer.render(opts.threads != 1); + } + + if (opts.verbose) { + std::ostringstream ostr; + ostr << gProgName << ": ...completed in " << std::setprecision(3) + << (tbb::tick_count::now() - start).seconds() << " sec"; + std::cout << ostr.str() << std::endl; + } + + if (boost::iends_with(imgFilename, ".ppm")) { + // Save as PPM (fast, but large file size). + std::string filename = imgFilename; + filename.erase(filename.size() - 4); // strip .ppm extension + film.savePPM(filename); + } else if (boost::iends_with(imgFilename, ".exr")) { + // Save as EXR (slow, but small file size). + saveEXR(imgFilename, film, opts); + } else { + OPENVDB_THROW(ValueError, "unsupported image file format (" + imgFilename + ")"); + } +} + + +void +strToSize(const std::string& s, size_t& x, size_t& y) +{ + std::vector elems; + boost::split(elems, s, boost::algorithm::is_any_of(",x")); + const size_t numElems = elems.size(); + if (numElems > 0) x = size_t(std::max(0, atoi(elems[0].c_str()))); + if (numElems > 1) y = size_t(std::max(0, atoi(elems[1].c_str()))); +} + + +std::vector +strToVec(const std::string& s) +{ + std::vector result; + std::vector elems; + boost::split(elems, s, boost::algorithm::is_any_of(",")); + for (size_t i = 0, N = elems.size(); i < N; ++i) { + result.push_back(atof(elems[i].c_str())); + } + return result; +} + + +openvdb::Vec3d +strToVec3d(const std::string& s) +{ + openvdb::Vec3d result(0.0, 0.0, 0.0); + std::vector elems = strToVec(s); + if (!elems.empty()) { + result = openvdb::Vec3d(elems[0]); + for (int i = 1, N = std::min(3, int(elems.size())); i < N; ++i) { + result[i] = elems[i]; + } + } + return result; +} + + +struct OptParse +{ + int argc; + char** argv; + + OptParse(int argc_, char* argv_[]): argc(argc_), argv(argv_) {} + + bool check(int idx, const std::string& name, int numArgs = 1) const + { + if (argv[idx] == name) { + if (idx + numArgs >= argc) { + OPENVDB_LOG_FATAL("option " << name << " requires " + << numArgs << " argument" << (numArgs == 1 ? "" : "s")); + usage(); + } + return true; + } + return false; + } +}; + +} // unnamed namespace + + +int +main(int argc, char *argv[]) +{ + OPENVDB_START_THREADSAFE_STATIC_WRITE + gProgName = argv[0]; + if (const char* ptr = ::strrchr(gProgName, '/')) gProgName = ptr + 1; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + + int retcode = EXIT_SUCCESS; + + if (argc == 1) usage(); + + openvdb::logging::initialize(argc, argv); + + std::string vdbFilename, imgFilename, gridName; + RenderOpts opts; + + bool hasFocal = false, hasFov = false, hasRotate = false, hasLookAt = false; + float fov = 0.0; + + OptParse parser(argc, argv); + for (int i = 1; i < argc; ++i) { + std::string arg = argv[i]; + if (arg[0] == '-') { + if (parser.check(i, "-absorb")) { + ++i; + opts.absorb = strToVec3d(argv[i]); + } else if (parser.check(i, "-aperture")) { + ++i; + opts.aperture = float(atof(argv[i])); + } else if (parser.check(i, "-camera")) { + ++i; + opts.camera = argv[i]; + } else if (parser.check(i, "-color")) { + ++i; + opts.color = argv[i]; + } else if (parser.check(i, "-compression")) { + ++i; + opts.compression = argv[i]; + } else if (parser.check(i, "-cpus")) { + ++i; + opts.threads = std::max(0, atoi(argv[i])); + } else if (parser.check(i, "-cutoff")) { + ++i; + opts.cutoff = atof(argv[i]); + } else if (parser.check(i, "-isovalue")) { + ++i; + opts.isovalue = atof(argv[i]); + } else if (parser.check(i, "-far")) { + ++i; + opts.zfar = float(atof(argv[i])); + } else if (parser.check(i, "-focal")) { + ++i; + opts.focal = float(atof(argv[i])); + hasFocal = true; + } else if (parser.check(i, "-fov")) { + ++i; + fov = float(atof(argv[i])); + hasFov = true; + } else if (parser.check(i, "-frame")) { + ++i; + opts.frame = float(atof(argv[i])); + } else if (parser.check(i, "-gain")) { + ++i; + opts.gain = atof(argv[i]); + } else if (parser.check(i, "-light")) { + ++i; + opts.light = strToVec(argv[i]); + } else if (parser.check(i, "-lookat")) { + ++i; + opts.lookat = true; + opts.target = strToVec3d(argv[i]); + hasLookAt = true; + } else if (parser.check(i, "-name")) { + ++i; + gridName = argv[i]; + } else if (parser.check(i, "-near")) { + ++i; + opts.znear = float(atof(argv[i])); + } else if (parser.check(i, "-r") || parser.check(i, "-rotate")) { + ++i; + opts.rotate = strToVec3d(argv[i]); + hasRotate = true; + } else if (parser.check(i, "-res")) { + ++i; + strToSize(argv[i], opts.width, opts.height); + } else if (parser.check(i, "-scatter")) { + ++i; + opts.scatter = strToVec3d(argv[i]); + } else if (parser.check(i, "-shader")) { + ++i; + opts.shader = argv[i]; + } else if (parser.check(i, "-shadowstep")) { + ++i; + opts.step[1] = atof(argv[i]); + } else if (parser.check(i, "-samples")) { + ++i; + opts.samples = size_t(std::max(0, atoi(argv[i]))); + } else if (parser.check(i, "-step")) { + ++i; + opts.step[0] = atof(argv[i]); + } else if (parser.check(i, "-t") || parser.check(i, "-translate")) { + ++i; + opts.translate = strToVec3d(argv[i]); + } else if (parser.check(i, "-up")) { + ++i; + opts.up = strToVec3d(argv[i]); + } else if (arg == "-v") { + opts.verbose = true; + } else if (arg == "-version" || arg == "--version") { + std::cout << "OpenVDB library version: " + << openvdb::getLibraryAbiVersionString() << "\n"; + std::cout << "OpenVDB file format version: " + << openvdb::OPENVDB_FILE_VERSION << std::endl; + return EXIT_SUCCESS; + } else if (arg == "-h" || arg == "-help" || arg == "--help") { + usage(EXIT_SUCCESS); + } else { + OPENVDB_LOG_FATAL("\"" << arg << "\" is not a valid option"); + usage(); + } + } else if (vdbFilename.empty()) { + vdbFilename = arg; + } else if (imgFilename.empty()) { + imgFilename = arg; + } else { + usage(); + } + } + if (vdbFilename.empty() || imgFilename.empty()) { + usage(); + } + if (hasFov) { + if (hasFocal) { + OPENVDB_LOG_FATAL("specify -focal or -fov, but not both"); + usage(); + } + opts.focal = float( + openvdb::tools::PerspectiveCamera::fieldOfViewToFocalLength(fov, opts.aperture)); + } + if (hasLookAt && hasRotate) { + OPENVDB_LOG_FATAL("specify -lookat or -r[otate], but not both"); + usage(); + } + { + const std::string err = opts.validate(); + if (!err.empty()) { + OPENVDB_LOG_FATAL(err); + usage(); + } + } + + try { + tbb::task_scheduler_init schedulerInit( + (opts.threads == 0) ? tbb::task_scheduler_init::automatic : opts.threads); + + openvdb::initialize(); + + const tbb::tick_count start = tbb::tick_count::now(); + if (opts.verbose) { + std::cout << gProgName << ": reading "; + if (!gridName.empty()) std::cout << gridName << " from "; + std::cout << vdbFilename << "..." << std::endl; + } + + openvdb::FloatGrid::Ptr grid; + { + openvdb::io::File file(vdbFilename); + + if (!gridName.empty()) { + file.open(); + grid = openvdb::gridPtrCast(file.readGrid(gridName)); + if (!grid) { + OPENVDB_THROW(openvdb::ValueError, + gridName + " is not a scalar, floating-point volume"); + } + } else { + // If no grid was specified by name, retrieve the first float grid from the file. + file.open(/*delayLoad=*/false); + openvdb::io::File::NameIterator it = file.beginName(); + openvdb::GridPtrVecPtr grids = file.readAllGridMetadata(); + for (size_t i = 0; i < grids->size(); ++i, ++it) { + grid = openvdb::gridPtrCast(grids->at(i)); + if (grid) { + gridName = *it; + file.close(); + file.open(); + grid = openvdb::gridPtrCast(file.readGrid(gridName)); + break; + } + } + if (!grid) { + OPENVDB_THROW(openvdb::ValueError, + "no scalar, floating-point volumes in file " + vdbFilename); + } + } + + if (!opts.color.empty()) { + opts.colorgrid = + openvdb::gridPtrCast(file.readGrid(opts.color)); + if (!opts.colorgrid) { + OPENVDB_THROW(openvdb::ValueError, + opts.color + " is not a vec3s color volume"); + } + } + } + + if (opts.verbose) { + std::ostringstream ostr; + ostr << gProgName << ": ...completed in " << std::setprecision(3) + << (tbb::tick_count::now() - start).seconds() << " sec"; + std::cout << ostr.str() << std::endl; + } + + if (grid) { + if (!hasLookAt && !hasRotate) { + // If the user specified neither the camera rotation nor a target + // to look at, orient the camera to point to the center of the grid. + opts.target = grid->evalActiveVoxelBoundingBox().getCenter(); + opts.target = grid->constTransform().indexToWorld(opts.target); + opts.lookat = true; + } + + if (opts.verbose) std::cout << opts << std::endl; + + render(*grid, imgFilename, opts); + } + } catch (std::exception& e) { + OPENVDB_LOG_FATAL(e.what()); + retcode = EXIT_FAILURE; + } catch (...) { + OPENVDB_LOG_FATAL("Exception caught (unexpected type)"); + } + + return retcode; +} diff --git a/openvdb/cmd/openvdb_view.cc b/openvdb/cmd/openvdb_view.cc new file mode 100644 index 00000000..7e837559 --- /dev/null +++ b/openvdb/cmd/openvdb_view.cc @@ -0,0 +1,169 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include // for boost::is_any_of() +#include // for boost::starts_with() +#include +#include +#include +#include +#include +#include +#include + + +inline void +usage [[noreturn]] (const char* progName, int status) +{ + (status == EXIT_SUCCESS ? std::cout : std::cerr) << +"Usage: " << progName << " file.vdb [file.vdb ...] [options]\n" << +"Which: displays OpenVDB grids\n" << +"Options:\n" << +" -i print grid information\n" << +" -h, -help print this usage message and exit\n" << +" -version print version information\n" << +"\n" << +"Controls:\n" << +" Esc exit\n" << +" -> (Right) show next grid\n" << +" <- (Left) show previous grid\n" << +" 1 toggle tree topology view on/off\n" << +" 2 toggle surface view on/off\n" << +" 3 toggle data view on/off\n" << +" G (\"geometry\") look at center of geometry\n" << +" H (\"home\") look at origin\n" << +" I toggle on-screen grid info on/off\n" << +" left mouse tumble\n" << +" right mouse pan\n" << +" mouse wheel zoom\n" << +"\n" << +" X + wheel move right cut plane\n" << +" Shift + X + wheel move left cut plane\n" << +" Y + wheel move top cut plane\n" << +" Shift + Y + wheel move bottom cut plane\n" << +" Z + wheel move front cut plane\n" << +" Shift + Z + wheel move back cut plane\n" << +" Ctrl + X + wheel move both X cut planes\n" << +" Ctrl + Y + wheel move both Y cut planes\n" << +" Ctrl + Z + wheel move both Z cut planes\n"; + exit(status); +} + + +//////////////////////////////////////// + + +int +main(int argc, char *argv[]) +{ + const char* progName = argv[0]; + if (const char* ptr = ::strrchr(progName, '/')) progName = ptr + 1; + + int status = EXIT_SUCCESS; + + try { + openvdb::initialize(); + openvdb::logging::initialize(argc, argv); + + bool printInfo = false, printGLInfo = false, printVersionInfo = false; + + // Parse the command line. + std::vector filenames; + for (int n = 1; n < argc; ++n) { + std::string str(argv[n]); + if (str[0] != '-') { + filenames.push_back(str); + } else if (str == "-i") { + printInfo = true; + } else if (str == "-d") { // deprecated + printGLInfo = true; + } else if (str == "-h" || str == "-help" || str == "--help") { + usage(progName, EXIT_SUCCESS); + } else if (str == "-version" || str == "--version") { + printVersionInfo = true; + printGLInfo = true; + } else { + usage(progName, EXIT_FAILURE); + } + } + + const size_t numFiles = filenames.size(); + + if (printVersionInfo) { + std::cout << "OpenVDB library version: " + << openvdb::getLibraryAbiVersionString() << "\n"; + std::cout << "OpenVDB file format version: " + << openvdb::OPENVDB_FILE_VERSION << std::endl; + // If there are no files to view, don't print the OpenGL version, + // since that would require opening a viewer window. + if (numFiles == 0) return EXIT_SUCCESS; + } + if (numFiles == 0 && !printGLInfo) usage(progName, EXIT_FAILURE); + + openvdb_viewer::Viewer viewer = openvdb_viewer::init(progName, /*bg=*/false); + + if (printGLInfo) { + // Now that the viewer window is open, we can get the OpenGL version, if requested. + if (!printVersionInfo) { + // Preserve the behavior of the deprecated -d option. + std::cout << viewer.getVersionString() << std::endl; + } else { + // Print OpenGL and GLFW versions. + std::ostringstream ostr; + ostr << viewer.getVersionString(); // returns comma-separated list of versions + const std::string s = ostr.str(); + std::vector elems; + boost::split(elems, s, boost::algorithm::is_any_of(",")); + for (size_t i = 0; i < elems.size(); ++i) { + boost::trim(elems[i]); + // Don't print the OpenVDB library version again. + if (!boost::starts_with(elems[i], "OpenVDB:")) { + std::cout << elems[i] << std::endl; + } + } + } + if (numFiles == 0) return EXIT_SUCCESS; + } + + openvdb::GridCPtrVec allGrids; + + // Load VDB files. + std::string indent(numFiles == 1 ? "" : " "); + for (size_t n = 0; n < numFiles; ++n) { + openvdb::io::File file(filenames[n]); + file.open(); + + openvdb::GridPtrVecPtr grids = file.getGrids(); + if (grids->empty()) { + OPENVDB_LOG_WARN(filenames[n] << " is empty"); + continue; + } + allGrids.insert(allGrids.end(), grids->begin(), grids->end()); + + if (printInfo) { + if (numFiles > 1) std::cout << filenames[n] << ":\n"; + for (size_t i = 0; i < grids->size(); ++i) { + const std::string name = (*grids)[i]->getName(); + openvdb::Coord dim = (*grids)[i]->evalActiveVoxelDim(); + std::cout << indent << (name.empty() ? "" : name) + << " (" << dim[0] << " x " << dim[1] << " x " << dim[2] + << " voxels)" << std::endl; + } + } + } + + viewer.open(); + viewer.view(allGrids); + + openvdb_viewer::exit(); + + } catch (const char* s) { + OPENVDB_LOG_ERROR(s); + status = EXIT_FAILURE; + } catch (std::exception& e) { + OPENVDB_LOG_ERROR(e.what()); + status = EXIT_FAILURE; + } + return status; +} diff --git a/openvdb/io/Archive.cc b/openvdb/io/Archive.cc new file mode 100644 index 00000000..652cc563 --- /dev/null +++ b/openvdb/io/Archive.cc @@ -0,0 +1,1459 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Archive.h" + +#include "GridDescriptor.h" +#include "DelayedLoadMetadata.h" +#include "io.h" + +#include +#include +#include +#include +#include + +// Boost.Interprocess uses a header-only portion of Boost.DateTime +#ifdef __clang__ +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunused-macros" +#endif +#define BOOST_DATE_TIME_NO_LIB +#ifdef __clang__ +#pragma clang diagnostic pop +#endif +#include +#include +#include +#include +#include +#include + +#include + +#ifdef _MSC_VER +#include // open_existing_file(), close_file() +extern "C" __declspec(dllimport) bool __stdcall GetFileTime( + void* fh, void* ctime, void* atime, void* mtime); +// boost::interprocess::detail was renamed to boost::interprocess::ipcdetail in Boost 1.48. +// Ensure that both namespaces exist. +namespace boost { namespace interprocess { namespace detail {} namespace ipcdetail {} } } +#else +#include // for struct stat +#include // for stat() +#include // for unlink() +#endif +#include // for std::find_if() +#include // for errno +#include // for getenv() +#include // for std::memcpy() +#include // for std::time() +#include +#include +#include +#include +#include +#include // for std::error_code() + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +#ifdef OPENVDB_USE_BLOSC +const uint32_t Archive::DEFAULT_COMPRESSION_FLAGS = (COMPRESS_BLOSC | COMPRESS_ACTIVE_MASK); +#else +const uint32_t Archive::DEFAULT_COMPRESSION_FLAGS = (COMPRESS_ZIP | COMPRESS_ACTIVE_MASK); +#endif + + +namespace { + +// Indices into a stream's internal extensible array of values used by readers and writers +struct StreamState +{ + static const long MAGIC_NUMBER; + + StreamState(); + ~StreamState(); + + // Important: The size and order of these member variables must *only* change when + // OpenVDB ABI changes to avoid potential segfaults when performing I/O + // across two different versions of the library. Adding new member + // variables to the end of the struct is allowed provided that they + // are only accessed from within an appropriate ABI guard. + int magicNumber; + int fileVersion; + int libraryMajorVersion; + int libraryMinorVersion; + int dataCompression; + int writeGridStatsMetadata; + int gridBackground; + int gridClass; + int halfFloat; + int mappedFile; + int metadata; +} +sStreamState; + +const long StreamState::MAGIC_NUMBER = + long((uint64_t(OPENVDB_MAGIC) << 32) | (uint64_t(OPENVDB_MAGIC))); + + +//////////////////////////////////////// + + +StreamState::StreamState(): magicNumber(std::ios_base::xalloc()) +{ + // Having reserved an entry (the one at index magicNumber) in the extensible array + // associated with every stream, store a magic number at that location in the + // array belonging to the cout stream. + std::cout.iword(magicNumber) = MAGIC_NUMBER; + std::cout.pword(magicNumber) = this; + + // Search for a lower-numbered entry in cout's array that already contains the magic number. + /// @todo This assumes that the indices returned by xalloc() increase monotonically. + int existingArray = -1; + for (int i = 0; i < magicNumber; ++i) { + if (std::cout.iword(i) == MAGIC_NUMBER) { + existingArray = i; + break; + } + } + + if (existingArray >= 0 && std::cout.pword(existingArray) != nullptr) { + // If a lower-numbered entry was found to contain the magic number, + // a coexisting version of this library must have registered it. + // In that case, the corresponding pointer should point to an existing + // StreamState struct. Copy the other array indices from that StreamState + // into this one, so as to share state with the other library. + const StreamState& other = + *static_cast(std::cout.pword(existingArray)); + fileVersion = other.fileVersion; + libraryMajorVersion = other.libraryMajorVersion; + libraryMinorVersion = other.libraryMinorVersion; + dataCompression = other.dataCompression; + writeGridStatsMetadata = other.writeGridStatsMetadata; + gridBackground = other.gridBackground; + gridClass = other.gridClass; + if (other.mappedFile != 0) { // memory-mapped file support was added in OpenVDB 3.0.0 + mappedFile = other.mappedFile; + metadata = other.metadata; + halfFloat = other.halfFloat; + } else { + mappedFile = std::ios_base::xalloc(); + metadata = std::ios_base::xalloc(); + halfFloat = std::ios_base::xalloc(); + } + } else { + // Reserve storage for per-stream file format and library version numbers + // and other values of use to readers and writers. Each of the following + // values is an index into the extensible arrays associated with all streams. + // The indices are common to all streams, but the values stored at those indices + // are unique to each stream. + fileVersion = std::ios_base::xalloc(); + libraryMajorVersion = std::ios_base::xalloc(); + libraryMinorVersion = std::ios_base::xalloc(); + dataCompression = std::ios_base::xalloc(); + writeGridStatsMetadata = std::ios_base::xalloc(); + gridBackground = std::ios_base::xalloc(); + gridClass = std::ios_base::xalloc(); + mappedFile = std::ios_base::xalloc(); + metadata = std::ios_base::xalloc(); + halfFloat = std::ios_base::xalloc(); + } +} + + +StreamState::~StreamState() +{ + // Ensure that this StreamState struct can no longer be accessed. + std::cout.iword(magicNumber) = 0; + std::cout.pword(magicNumber) = nullptr; +} + +} // unnamed namespace + + +//////////////////////////////////////// + + +struct StreamMetadata::Impl +{ + // Important: The size and order of these member variables must *only* change when + // OpenVDB ABI changes to avoid potential segfaults when performing I/O + // across two different versions of the library. Adding new member + // variables to the end of the struct is allowed provided that they + // are only accessed from within an appropriate ABI guard. + + uint32_t mFileVersion = OPENVDB_FILE_VERSION; + VersionId mLibraryVersion = { OPENVDB_LIBRARY_MAJOR_VERSION, OPENVDB_LIBRARY_MINOR_VERSION }; + uint32_t mCompression = COMPRESS_NONE; + uint32_t mGridClass = GRID_UNKNOWN; + const void* mBackgroundPtr = nullptr; ///< @todo use Metadata::Ptr? + bool mHalfFloat = false; + bool mWriteGridStats = false; + bool mSeekable = false; + bool mCountingPasses = false; + uint32_t mPass = 0; + MetaMap mGridMetadata; + AuxDataMap mAuxData; + bool mDelayedLoadMeta = DelayedLoadMetadata::isRegisteredType(); + uint64_t mLeaf = 0; + uint32_t mTest = 0; // for testing only +}; // struct StreamMetadata + + +StreamMetadata::StreamMetadata(): mImpl(new Impl) +{ +} + + +StreamMetadata::StreamMetadata(const StreamMetadata& other): mImpl(new Impl(*other.mImpl)) +{ +} + + +StreamMetadata::StreamMetadata(std::ios_base& strm): mImpl(new Impl) +{ + mImpl->mFileVersion = getFormatVersion(strm); + mImpl->mLibraryVersion = getLibraryVersion(strm); + mImpl->mCompression = getDataCompression(strm); + mImpl->mGridClass = getGridClass(strm); + mImpl->mHalfFloat = getHalfFloat(strm); + mImpl->mWriteGridStats = getWriteGridStatsMetadata(strm); +} + + +StreamMetadata::~StreamMetadata() +{ +} + + +StreamMetadata& +StreamMetadata::operator=(const StreamMetadata& other) +{ + if (&other != this) { + mImpl.reset(new Impl(*other.mImpl)); + } + return *this; +} + + +void +StreamMetadata::transferTo(std::ios_base& strm) const +{ + io::setVersion(strm, mImpl->mLibraryVersion, mImpl->mFileVersion); + io::setDataCompression(strm, mImpl->mCompression); + io::setGridBackgroundValuePtr(strm, mImpl->mBackgroundPtr); + io::setGridClass(strm, mImpl->mGridClass); + io::setHalfFloat(strm, mImpl->mHalfFloat); + io::setWriteGridStatsMetadata(strm, mImpl->mWriteGridStats); +} + + +uint32_t StreamMetadata::fileVersion() const { return mImpl->mFileVersion; } +VersionId StreamMetadata::libraryVersion() const { return mImpl->mLibraryVersion; } +uint32_t StreamMetadata::compression() const { return mImpl->mCompression; } +uint32_t StreamMetadata::gridClass() const { return mImpl->mGridClass; } +const void* StreamMetadata::backgroundPtr() const { return mImpl->mBackgroundPtr; } +bool StreamMetadata::halfFloat() const { return mImpl->mHalfFloat; } +bool StreamMetadata::writeGridStats() const { return mImpl->mWriteGridStats; } +bool StreamMetadata::seekable() const { return mImpl->mSeekable; } +bool StreamMetadata::delayedLoadMeta() const { return mImpl->mDelayedLoadMeta; } +bool StreamMetadata::countingPasses() const { return mImpl->mCountingPasses; } +uint32_t StreamMetadata::pass() const { return mImpl->mPass; } +uint64_t StreamMetadata::leaf() const { return mImpl->mLeaf; } +MetaMap& StreamMetadata::gridMetadata() { return mImpl->mGridMetadata; } +const MetaMap& StreamMetadata::gridMetadata() const { return mImpl->mGridMetadata; } +uint32_t StreamMetadata::__test() const { return mImpl->mTest; } + +StreamMetadata::AuxDataMap& StreamMetadata::auxData() { return mImpl->mAuxData; } +const StreamMetadata::AuxDataMap& StreamMetadata::auxData() const { return mImpl->mAuxData; } + +void StreamMetadata::setFileVersion(uint32_t v) { mImpl->mFileVersion = v; } +void StreamMetadata::setLibraryVersion(VersionId v) { mImpl->mLibraryVersion = v; } +void StreamMetadata::setCompression(uint32_t c) { mImpl->mCompression = c; } +void StreamMetadata::setGridClass(uint32_t c) { mImpl->mGridClass = c; } +void StreamMetadata::setBackgroundPtr(const void* ptr) { mImpl->mBackgroundPtr = ptr; } +void StreamMetadata::setHalfFloat(bool b) { mImpl->mHalfFloat = b; } +void StreamMetadata::setWriteGridStats(bool b) { mImpl->mWriteGridStats = b; } +void StreamMetadata::setSeekable(bool b) { mImpl->mSeekable = b; } +void StreamMetadata::setCountingPasses(bool b) { mImpl->mCountingPasses = b; } +void StreamMetadata::setPass(uint32_t i) { mImpl->mPass = i; } +void StreamMetadata::setLeaf(uint64_t i) { mImpl->mLeaf = i; } +void StreamMetadata::__setTest(uint32_t t) { mImpl->mTest = t; } + +std::string +StreamMetadata::str() const +{ + std::ostringstream ostr; + ostr << std::boolalpha; + ostr << "version: " << libraryVersion().first << "." << libraryVersion().second + << "/" << fileVersion() << "\n"; + ostr << "class: " << GridBase::gridClassToString(static_cast(gridClass())) << "\n"; + ostr << "compression: " << compressionToString(compression()) << "\n"; + ostr << "half_float: " << halfFloat() << "\n"; + ostr << "seekable: " << seekable() << "\n"; + ostr << "delayed_load_meta: " << delayedLoadMeta() << "\n"; + ostr << "pass: " << pass() << "\n"; + ostr << "counting_passes: " << countingPasses() << "\n"; + ostr << "write_grid_stats_metadata: " << writeGridStats() << "\n"; + if (!auxData().empty()) ostr << auxData(); + if (gridMetadata().metaCount() != 0) { + ostr << "grid_metadata:\n" << gridMetadata().str(/*indent=*/" "); + } + return ostr.str(); +} + + +std::ostream& +operator<<(std::ostream& os, const StreamMetadata& meta) +{ + os << meta.str(); + return os; +} + + +namespace { + +template +inline bool +writeAsType(std::ostream& os, const boost::any& val) +{ + if (val.type() == typeid(T)) { + os << boost::any_cast(val); + return true; + } + return false; +} + +struct PopulateDelayedLoadMetadataOp +{ + DelayedLoadMetadata& metadata; + uint32_t compression; + + PopulateDelayedLoadMetadataOp(DelayedLoadMetadata& _metadata, uint32_t _compression) + : metadata(_metadata) + , compression(_compression) { } + + template + void operator()(const GridT& grid) const + { + using TreeT = typename GridT::TreeType; + using ValueT = typename TreeT::ValueType; + using LeafT = typename TreeT::LeafNodeType; + using MaskT = typename LeafT::NodeMaskType; + + const TreeT& tree = grid.constTree(); + const Index32 leafCount = tree.leafCount(); + + // early exit if not leaf nodes + if (leafCount == Index32(0)) return; + + metadata.resizeMask(leafCount); + + if (compression & (COMPRESS_BLOSC | COMPRESS_ZIP)) { + metadata.resizeCompressedSize(leafCount); + } + + const auto background = tree.background(); + const bool saveFloatAsHalf = grid.saveFloatAsHalf(); + + tree::LeafManager leafManager(tree); + + leafManager.foreach( + [&](const LeafT& leaf, size_t idx) { + // set mask value + MaskCompress maskCompressData( + leaf.valueMask(), /*childMask=*/MaskT(), leaf.buffer().data(), background); + metadata.setMask(idx, maskCompressData.metadata); + + if (compression & (COMPRESS_BLOSC | COMPRESS_ZIP)) { + // set compressed size value + size_t sizeBytes(8); + size_t compressedSize = io::writeCompressedValuesSize( + leaf.buffer().data(), LeafT::SIZE, + leaf.valueMask(), maskCompressData.metadata, saveFloatAsHalf, compression); + metadata.setCompressedSize(idx, compressedSize+sizeBytes); + } + } + ); + } +}; + +bool populateDelayedLoadMetadata(DelayedLoadMetadata& metadata, + const GridBase& gridBase, uint32_t compression) +{ + PopulateDelayedLoadMetadataOp op(metadata, compression); + + using AllowedTypes = TypeList< + Int32Grid, Int64Grid, + FloatGrid, DoubleGrid, + Vec3IGrid, Vec3SGrid, Vec3DGrid>; + + return gridBase.apply(op); +} + +} // unnamed namespace + +std::ostream& +operator<<(std::ostream& os, const StreamMetadata::AuxDataMap& auxData) +{ + for (StreamMetadata::AuxDataMap::const_iterator it = auxData.begin(), end = auxData.end(); + it != end; ++it) + { + os << it->first << ": "; + // Note: boost::any doesn't support serialization. + const boost::any& val = it->second; + if (!writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val) + && !writeAsType(os, val)) + { + os << val.type().name() << "(...)"; + } + os << "\n"; + } + return os; +} + + +//////////////////////////////////////// + + +// Memory-mapping a VDB file permits threaded input (and output, potentially, +// though that might not be practical for compressed files or files containing +// multiple grids). In particular, a memory-mapped file can be loaded lazily, +// meaning that the voxel buffers of the leaf nodes of a grid's tree are not allocated +// until they are actually accessed. When access to its buffer is requested, +// a leaf node allocates memory for the buffer and then streams in (and decompresses) +// its contents from the memory map, starting from a stream offset that was recorded +// at the time the node was constructed. The memory map must persist as long as +// there are unloaded leaf nodes; this is ensured by storing a shared pointer +// to the map in each unloaded node. + +class MappedFile::Impl +{ +public: + Impl(const std::string& filename, bool autoDelete) + : mMap(filename.c_str(), boost::interprocess::read_only) + , mRegion(mMap, boost::interprocess::read_only) + , mAutoDelete(autoDelete) + { + mLastWriteTime = this->getLastWriteTime(); + + if (mAutoDelete) { +#ifndef _MSC_VER + // On Unix systems, unlink the file so that it gets deleted once it is closed. + ::unlink(mMap.get_name()); +#endif + } + } + + ~Impl() + { + std::string filename; + if (const char* s = mMap.get_name()) filename = s; + OPENVDB_LOG_DEBUG_RUNTIME("closing memory-mapped file " << filename); + if (mNotifier) mNotifier(filename); + if (mAutoDelete) { + if (!boost::interprocess::file_mapping::remove(filename.c_str())) { + if (errno != ENOENT) { + // Warn if the file exists but couldn't be removed. + std::string mesg = getErrorString(); + if (!mesg.empty()) mesg = " (" + mesg + ")"; + OPENVDB_LOG_WARN("failed to remove temporary file " << filename << mesg); + } + } + } + } + + Index64 getLastWriteTime() const + { + Index64 result = 0; + const char* filename = mMap.get_name(); + +#ifdef _MSC_VER + // boost::interprocess::detail was renamed to boost::interprocess::ipcdetail in Boost 1.48. + using namespace boost::interprocess::detail; + using namespace boost::interprocess::ipcdetail; + + if (void* fh = open_existing_file(filename, boost::interprocess::read_only)) { + struct { unsigned long lo, hi; } mtime; // Windows FILETIME struct + if (GetFileTime(fh, nullptr, nullptr, &mtime)) { + result = (Index64(mtime.hi) << 32) | mtime.lo; + } + close_file(fh); + } +#else + struct stat info; + if (0 == ::stat(filename, &info)) { + result = Index64(info.st_mtime); + } +#endif + return result; + } + + boost::interprocess::file_mapping mMap; + boost::interprocess::mapped_region mRegion; + bool mAutoDelete; + Notifier mNotifier; + mutable tbb::atomic mLastWriteTime; + +private: + Impl(const Impl&); // not copyable + Impl& operator=(const Impl&); // not copyable +}; + + +MappedFile::MappedFile(const std::string& filename, bool autoDelete): + mImpl(new Impl(filename, autoDelete)) +{ +} + + +MappedFile::~MappedFile() +{ +} + + +std::string +MappedFile::filename() const +{ + std::string result; + if (const char* s = mImpl->mMap.get_name()) result = s; + return result; +} + + +SharedPtr +MappedFile::createBuffer() const +{ + if (!mImpl->mAutoDelete && mImpl->mLastWriteTime > 0) { + // Warn if the file has been modified since it was opened + // (but don't bother checking if it is a private, temporary file). + if (mImpl->getLastWriteTime() > mImpl->mLastWriteTime) { + OPENVDB_LOG_WARN("file " << this->filename() << " might have changed on disk" + << " since it was opened"); + mImpl->mLastWriteTime = 0; // suppress further warnings + } + } + + return SharedPtr{ + new boost::iostreams::stream_buffer{ + static_cast(mImpl->mRegion.get_address()), mImpl->mRegion.get_size()}}; +} + + +void +MappedFile::setNotifier(const Notifier& notifier) +{ + mImpl->mNotifier = notifier; +} + + +void +MappedFile::clearNotifier() +{ + mImpl->mNotifier = nullptr; +} + + +//////////////////////////////////////// + + +std::string +getErrorString(int errorNum) +{ + return std::error_code(errorNum, std::generic_category()).message(); +} + + +std::string +getErrorString() +{ + return getErrorString(errno); +} + + +//////////////////////////////////////// + + +Archive::Archive() + : mFileVersion(OPENVDB_FILE_VERSION) + , mLibraryVersion(OPENVDB_LIBRARY_MAJOR_VERSION, OPENVDB_LIBRARY_MINOR_VERSION) + , mUuid(boost::uuids::nil_uuid()) + , mInputHasGridOffsets(false) + , mEnableInstancing(true) + , mCompression(DEFAULT_COMPRESSION_FLAGS) + , mEnableGridStats(true) +{ +} + + +Archive::~Archive() +{ +} + + +Archive::Ptr +Archive::copy() const +{ + return Archive::Ptr(new Archive(*this)); +} + + +//////////////////////////////////////// + + +std::string +Archive::getUniqueTag() const +{ + return boost::uuids::to_string(mUuid); +} + + +bool +Archive::isIdentical(const std::string& uuidStr) const +{ + return uuidStr == getUniqueTag(); +} + + +//////////////////////////////////////// + + +uint32_t +getFormatVersion(std::ios_base& is) +{ + /// @todo get from StreamMetadata + return static_cast(is.iword(sStreamState.fileVersion)); +} + + +void +Archive::setFormatVersion(std::istream& is) +{ + is.iword(sStreamState.fileVersion) = mFileVersion; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(is)) { + meta->setFileVersion(mFileVersion); + } +} + + +VersionId +getLibraryVersion(std::ios_base& is) +{ + /// @todo get from StreamMetadata + VersionId version; + version.first = static_cast(is.iword(sStreamState.libraryMajorVersion)); + version.second = static_cast(is.iword(sStreamState.libraryMinorVersion)); + return version; +} + + +void +Archive::setLibraryVersion(std::istream& is) +{ + is.iword(sStreamState.libraryMajorVersion) = mLibraryVersion.first; ///< @todo remove + is.iword(sStreamState.libraryMinorVersion) = mLibraryVersion.second; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(is)) { + meta->setLibraryVersion(mLibraryVersion); + } +} + + +std::string +getVersion(std::ios_base& is) +{ + VersionId version = getLibraryVersion(is); + std::ostringstream ostr; + ostr << version.first << "." << version.second << "/" << getFormatVersion(is); + return ostr.str(); +} + + +void +setCurrentVersion(std::istream& is) +{ + is.iword(sStreamState.fileVersion) = OPENVDB_FILE_VERSION; ///< @todo remove + is.iword(sStreamState.libraryMajorVersion) = OPENVDB_LIBRARY_MAJOR_VERSION; ///< @todo remove + is.iword(sStreamState.libraryMinorVersion) = OPENVDB_LIBRARY_MINOR_VERSION; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(is)) { + meta->setFileVersion(OPENVDB_FILE_VERSION); + meta->setLibraryVersion(VersionId( + OPENVDB_LIBRARY_MAJOR_VERSION, OPENVDB_LIBRARY_MINOR_VERSION)); + } +} + + +void +setVersion(std::ios_base& strm, const VersionId& libraryVersion, uint32_t fileVersion) +{ + strm.iword(sStreamState.fileVersion) = fileVersion; ///< @todo remove + strm.iword(sStreamState.libraryMajorVersion) = libraryVersion.first; ///< @todo remove + strm.iword(sStreamState.libraryMinorVersion) = libraryVersion.second; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setFileVersion(fileVersion); + meta->setLibraryVersion(libraryVersion); + } +} + + +std::string +Archive::version() const +{ + std::ostringstream ostr; + ostr << mLibraryVersion.first << "." << mLibraryVersion.second << "/" << mFileVersion; + return ostr.str(); +} + + +//////////////////////////////////////// + + +uint32_t +getDataCompression(std::ios_base& strm) +{ + /// @todo get from StreamMetadata + return uint32_t(strm.iword(sStreamState.dataCompression)); +} + + +void +setDataCompression(std::ios_base& strm, uint32_t c) +{ + strm.iword(sStreamState.dataCompression) = c; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setCompression(c); + } +} + + +void +Archive::setDataCompression(std::istream& is) +{ + io::setDataCompression(is, mCompression); ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(is)) { + meta->setCompression(mCompression); + } +} + + +//static +bool +Archive::hasBloscCompression() +{ +#ifdef OPENVDB_USE_BLOSC + return true; +#else + return false; +#endif +} + + +void +Archive::setGridCompression(std::ostream& os, const GridBase& grid) const +{ + // Start with the options that are enabled globally for this archive. + uint32_t c = compression(); + + // Disable options that are inappropriate for the given grid. + switch (grid.getGridClass()) { + case GRID_LEVEL_SET: + case GRID_FOG_VOLUME: + // ZLIB compression is not used on level sets or fog volumes. + c = c & ~COMPRESS_ZIP; + break; + case GRID_STAGGERED: + case GRID_UNKNOWN: + break; + } + io::setDataCompression(os, c); + + os.write(reinterpret_cast(&c), sizeof(uint32_t)); +} + + +void +Archive::readGridCompression(std::istream& is) +{ + if (getFormatVersion(is) >= OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION) { + uint32_t c = COMPRESS_NONE; + is.read(reinterpret_cast(&c), sizeof(uint32_t)); + io::setDataCompression(is, c); + } +} + + +//////////////////////////////////////// + + +bool +getWriteGridStatsMetadata(std::ios_base& strm) +{ + /// @todo get from StreamMetadata + return strm.iword(sStreamState.writeGridStatsMetadata) != 0; +} + + +void +setWriteGridStatsMetadata(std::ios_base& strm, bool writeGridStats) +{ + strm.iword(sStreamState.writeGridStatsMetadata) = writeGridStats; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setWriteGridStats(writeGridStats); + } +} + + +//////////////////////////////////////// + + +uint32_t +getGridClass(std::ios_base& strm) +{ + /// @todo get from StreamMetadata + const uint32_t val = static_cast(strm.iword(sStreamState.gridClass)); + if (val >= NUM_GRID_CLASSES) return GRID_UNKNOWN; + return val; +} + + +void +setGridClass(std::ios_base& strm, uint32_t cls) +{ + strm.iword(sStreamState.gridClass) = long(cls); ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setGridClass(cls); + } +} + + +bool +getHalfFloat(std::ios_base& strm) +{ + /// @todo get from StreamMetadata + return strm.iword(sStreamState.halfFloat) != 0; +} + + +void +setHalfFloat(std::ios_base& strm, bool halfFloat) +{ + strm.iword(sStreamState.halfFloat) = halfFloat; ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setHalfFloat(halfFloat); + } +} + + +const void* +getGridBackgroundValuePtr(std::ios_base& strm) +{ + /// @todo get from StreamMetadata + return strm.pword(sStreamState.gridBackground); +} + + +void +setGridBackgroundValuePtr(std::ios_base& strm, const void* background) +{ + strm.pword(sStreamState.gridBackground) = const_cast(background); ///< @todo remove + if (StreamMetadata::Ptr meta = getStreamMetadataPtr(strm)) { + meta->setBackgroundPtr(background); + } +} + + +MappedFile::Ptr +getMappedFilePtr(std::ios_base& strm) +{ + if (const void* ptr = strm.pword(sStreamState.mappedFile)) { + return *static_cast(ptr); + } + return MappedFile::Ptr(); +} + + +void +setMappedFilePtr(std::ios_base& strm, io::MappedFile::Ptr& mappedFile) +{ + strm.pword(sStreamState.mappedFile) = &mappedFile; +} + + +StreamMetadata::Ptr +getStreamMetadataPtr(std::ios_base& strm) +{ + if (const void* ptr = strm.pword(sStreamState.metadata)) { + return *static_cast(ptr); + } + return StreamMetadata::Ptr(); +} + + +void +setStreamMetadataPtr(std::ios_base& strm, StreamMetadata::Ptr& meta, bool transfer) +{ + strm.pword(sStreamState.metadata) = &meta; + if (transfer && meta) meta->transferTo(strm); +} + + +StreamMetadata::Ptr +clearStreamMetadataPtr(std::ios_base& strm) +{ + StreamMetadata::Ptr result = getStreamMetadataPtr(strm); + strm.pword(sStreamState.metadata) = nullptr; + return result; +} + + +//////////////////////////////////////// + + +bool +Archive::readHeader(std::istream& is) +{ + // 1) Read the magic number for VDB. + int64_t magic; + is.read(reinterpret_cast(&magic), sizeof(int64_t)); + + if (magic != OPENVDB_MAGIC) { + OPENVDB_THROW(IoError, "not a VDB file"); + } + + // 2) Read the file format version number. + is.read(reinterpret_cast(&mFileVersion), sizeof(uint32_t)); + if (mFileVersion > OPENVDB_FILE_VERSION) { + OPENVDB_LOG_WARN("unsupported VDB file format (expected version " + << OPENVDB_FILE_VERSION << " or earlier, got version " << mFileVersion << ")"); + } else if (mFileVersion < 211) { + // Versions prior to 211 stored separate major, minor and patch numbers. + uint32_t version; + is.read(reinterpret_cast(&version), sizeof(uint32_t)); + mFileVersion = 100 * mFileVersion + 10 * version; + is.read(reinterpret_cast(&version), sizeof(uint32_t)); + mFileVersion += version; + } + + // 3) Read the library version numbers (not stored prior to file format version 211). + mLibraryVersion.first = mLibraryVersion.second = 0; + if (mFileVersion >= 211) { + uint32_t version; + is.read(reinterpret_cast(&version), sizeof(uint32_t)); + mLibraryVersion.first = version; // major version + is.read(reinterpret_cast(&version), sizeof(uint32_t)); + mLibraryVersion.second = version; // minor version + } + + // 4) Read the flag indicating whether the stream supports partial reading. + // (Versions prior to 212 have no flag because they always supported partial reading.) + mInputHasGridOffsets = true; + if (mFileVersion >= 212) { + char hasGridOffsets; + is.read(&hasGridOffsets, sizeof(char)); + mInputHasGridOffsets = hasGridOffsets; + } + + // 5) Read the flag that indicates whether data is compressed. + // (From version 222 on, compression information is stored per grid.) + mCompression = DEFAULT_COMPRESSION_FLAGS; + if (mFileVersion < OPENVDB_FILE_VERSION_BLOSC_COMPRESSION) { + // Prior to the introduction of Blosc, ZLIB was the default compression scheme. + mCompression = (COMPRESS_ZIP | COMPRESS_ACTIVE_MASK); + } + if (mFileVersion >= OPENVDB_FILE_VERSION_SELECTIVE_COMPRESSION && + mFileVersion < OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION) + { + char isCompressed; + is.read(&isCompressed, sizeof(char)); + mCompression = (isCompressed != 0 ? COMPRESS_ZIP : COMPRESS_NONE); + } + + // 6) Read the 16-byte (128-bit) uuid. + boost::uuids::uuid oldUuid = mUuid; + if (mFileVersion >= OPENVDB_FILE_VERSION_BOOST_UUID) { + // UUID is stored as an ASCII string. + is >> mUuid; + } else { + // Older versions stored the UUID as a byte string. + char uuidBytes[16]; + is.read(uuidBytes, 16); + std::memcpy(&mUuid.data[0], uuidBytes, std::min(16, mUuid.size())); + } + return oldUuid != mUuid; // true if UUID in input stream differs from old UUID +} + + +void +Archive::writeHeader(std::ostream& os, bool seekable) const +{ + using boost::uint32_t; + using boost::int64_t; + + // 1) Write the magic number for VDB. + int64_t magic = OPENVDB_MAGIC; + os.write(reinterpret_cast(&magic), sizeof(int64_t)); + + // 2) Write the file format version number. + uint32_t version = OPENVDB_FILE_VERSION; + os.write(reinterpret_cast(&version), sizeof(uint32_t)); + + // 3) Write the library version numbers. + version = OPENVDB_LIBRARY_MAJOR_VERSION; + os.write(reinterpret_cast(&version), sizeof(uint32_t)); + version = OPENVDB_LIBRARY_MINOR_VERSION; + os.write(reinterpret_cast(&version), sizeof(uint32_t)); + + // 4) Write a flag indicating that this stream contains no grid offsets. + char hasGridOffsets = seekable; + os.write(&hasGridOffsets, sizeof(char)); + + // 5) Write a flag indicating that this stream contains compressed leaf data. + // (Omitted as of version 222) + + // 6) Generate a new random 16-byte (128-bit) uuid and write it to the stream. + std::mt19937 ran; + ran.seed(std::mt19937::result_type(std::random_device()() + std::time(nullptr))); + boost::uuids::basic_random_generator gen(&ran); + mUuid = gen(); // mUuid is mutable + os << mUuid; +} + + +//////////////////////////////////////// + + +int32_t +Archive::readGridCount(std::istream& is) +{ + int32_t gridCount = 0; + is.read(reinterpret_cast(&gridCount), sizeof(int32_t)); + return gridCount; +} + + +//////////////////////////////////////// + + +void +Archive::connectInstance(const GridDescriptor& gd, const NamedGridMap& grids) const +{ + if (!gd.isInstance() || grids.empty()) return; + + NamedGridMap::const_iterator it = grids.find(gd.uniqueName()); + if (it == grids.end()) return; + GridBase::Ptr grid = it->second; + if (!grid) return; + + it = grids.find(gd.instanceParentName()); + if (it != grids.end()) { + GridBase::Ptr parent = it->second; + if (mEnableInstancing) { + // Share the instance parent's tree. + grid->setTree(parent->baseTreePtr()); + } else { + // Copy the instance parent's tree. + grid->setTree(parent->baseTree().copy()); + } + } else { + OPENVDB_THROW(KeyError, "missing instance parent \"" + << GridDescriptor::nameAsString(gd.instanceParentName()) + << "\" for grid " << GridDescriptor::nameAsString(gd.uniqueName())); + } +} + + +//////////////////////////////////////// + + +//static +bool +Archive::isDelayedLoadingEnabled() +{ + return (nullptr == std::getenv("OPENVDB_DISABLE_DELAYED_LOAD")); +} + + +namespace { + +struct NoBBox {}; + +template +void +doReadGrid(GridBase::Ptr grid, const GridDescriptor& gd, std::istream& is, const BoxType& bbox) +{ + struct Local { + static void readBuffers(GridBase& g, std::istream& istrm, NoBBox) { g.readBuffers(istrm); } + static void readBuffers(GridBase& g, std::istream& istrm, const CoordBBox& indexBBox) { + g.readBuffers(istrm, indexBBox); + } + static void readBuffers(GridBase& g, std::istream& istrm, const BBoxd& worldBBox) { + g.readBuffers(istrm, g.constTransform().worldToIndexNodeCentered(worldBBox)); + } + }; + + // Restore the file-level stream metadata on exit. + struct OnExit { + OnExit(std::ios_base& strm_): strm(&strm_), ptr(strm_.pword(sStreamState.metadata)) {} + ~OnExit() { strm->pword(sStreamState.metadata) = ptr; } + std::ios_base* strm; + void* ptr; + }; + OnExit restore(is); + + // Stream metadata varies per grid, and it needs to persist + // in case delayed load is in effect. + io::StreamMetadata::Ptr streamMetadata; + if (io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(is)) { + // Make a grid-level copy of the file-level stream metadata. + streamMetadata.reset(new StreamMetadata(*meta)); + } else { + streamMetadata.reset(new StreamMetadata); + } + streamMetadata->setHalfFloat(grid->saveFloatAsHalf()); + io::setStreamMetadataPtr(is, streamMetadata, /*transfer=*/false); + + io::setGridClass(is, GRID_UNKNOWN); + io::setGridBackgroundValuePtr(is, nullptr); + + grid->readMeta(is); + + // Add a description of the compression settings to the grid as metadata. + /// @todo Would this be useful? + //const uint32_t c = getDataCompression(is); + //grid->insertMeta(GridBase::META_FILE_COMPRESSION, + // StringMetadata(compressionToString(c))); + + const VersionId version = getLibraryVersion(is); + if (version.first < 6 || (version.first == 6 && version.second <= 1)) { + // If delay load metadata exists, but the file format version does not support + // delay load metadata, this likely means the original grid was read and then + // written using a prior version of OpenVDB and ABI>=5 where unknown metadata + // can be blindly copied. This means that it is possible for the metadata to + // no longer be in sync with the grid, so we remove it to ensure correctness. + + if ((*grid)[GridBase::META_FILE_DELAYED_LOAD]) { + grid->removeMeta(GridBase::META_FILE_DELAYED_LOAD); + } + } + + streamMetadata->gridMetadata() = static_cast(*grid); + const GridClass gridClass = grid->getGridClass(); + io::setGridClass(is, gridClass); + + // reset leaf value to zero + streamMetadata->setLeaf(0); + + // drop DelayedLoadMetadata from the grid as it is only useful for IO + // a stream metadata non-zero value disables this behaviour for testing + + if (streamMetadata->__test() == uint32_t(0)) { + if ((*grid)[GridBase::META_FILE_DELAYED_LOAD]) { + grid->removeMeta(GridBase::META_FILE_DELAYED_LOAD); + } + } + + if (getFormatVersion(is) >= OPENVDB_FILE_VERSION_GRID_INSTANCING) { + grid->readTransform(is); + if (!gd.isInstance()) { + grid->readTopology(is); + Local::readBuffers(*grid, is, bbox); + } + } else { + // Older versions of the library stored the transform after the topology. + grid->readTopology(is); + grid->readTransform(is); + Local::readBuffers(*grid, is, bbox); + } + if (getFormatVersion(is) < OPENVDB_FILE_VERSION_NO_GRIDMAP) { + // Older versions of the library didn't store grid names as metadata, + // so when reading older files, copy the grid name from the descriptor + // to the grid's metadata. + if (grid->getName().empty()) { + grid->setName(gd.gridName()); + } + } +} + +} // unnamed namespace + + +void +Archive::readGrid(GridBase::Ptr grid, const GridDescriptor& gd, std::istream& is) +{ + // Read the compression settings for this grid and tag the stream with them + // so that downstream functions can reference them. + readGridCompression(is); + + doReadGrid(grid, gd, is, NoBBox()); +} + +void +Archive::readGrid(GridBase::Ptr grid, const GridDescriptor& gd, + std::istream& is, const BBoxd& worldBBox) +{ + readGridCompression(is); + doReadGrid(grid, gd, is, worldBBox); +} + +void +Archive::readGrid(GridBase::Ptr grid, const GridDescriptor& gd, + std::istream& is, const CoordBBox& indexBBox) +{ + readGridCompression(is); + doReadGrid(grid, gd, is, indexBBox); +} + + +//////////////////////////////////////// + + +void +Archive::write(std::ostream& os, const GridPtrVec& grids, bool seekable, + const MetaMap& metadata) const +{ + this->write(os, GridCPtrVec(grids.begin(), grids.end()), seekable, metadata); +} + + +void +Archive::write(std::ostream& os, const GridCPtrVec& grids, bool seekable, + const MetaMap& metadata) const +{ + // Set stream flags so that downstream functions can reference them. + io::StreamMetadata::Ptr streamMetadata = io::getStreamMetadataPtr(os); + if (!streamMetadata) { + streamMetadata.reset(new StreamMetadata); + io::setStreamMetadataPtr(os, streamMetadata, /*transfer=*/false); + } + io::setDataCompression(os, compression()); + io::setWriteGridStatsMetadata(os, isGridStatsMetadataEnabled()); + + this->writeHeader(os, seekable); + + metadata.writeMeta(os); + + // Write the number of non-null grids. + int32_t gridCount = 0; + for (GridCPtrVecCIter i = grids.begin(), e = grids.end(); i != e; ++i) { + if (*i) ++gridCount; + } + os.write(reinterpret_cast(&gridCount), sizeof(int32_t)); + + using TreeMap = std::map; + using TreeMapIter = TreeMap::iterator; + TreeMap treeMap; + + // Determine which grid names are unique and which are not. + using NameHistogram = std::map; + NameHistogram nameCount; + for (GridCPtrVecCIter i = grids.begin(), e = grids.end(); i != e; ++i) { + if (const GridBase::ConstPtr& grid = *i) { + const std::string name = grid->getName(); + NameHistogram::iterator it = nameCount.find(name); + if (it != nameCount.end()) it->second++; + else nameCount[name] = 1; + } + } + + std::set uniqueNames; + + // Write out the non-null grids. + for (GridCPtrVecCIter i = grids.begin(), e = grids.end(); i != e; ++i) { + if (const GridBase::ConstPtr& grid = *i) { + + // Ensure that the grid's descriptor has a unique grid name, by appending + // a number to it if a grid with the same name was already written. + // Always add a number if the grid name is empty, so that the grid can be + // properly identified as an instance parent, if necessary. + std::string name = grid->getName(); + if (name.empty() || nameCount[name] > 1) { + name = GridDescriptor::addSuffix(name, 0); + } + for (int n = 1; uniqueNames.find(name) != uniqueNames.end(); ++n) { + name = GridDescriptor::addSuffix(grid->getName(), n); + } + uniqueNames.insert(name); + + // Create a grid descriptor. + GridDescriptor gd(name, grid->type(), grid->saveFloatAsHalf()); + + // Check if this grid's tree is shared with a grid that has already been written. + const TreeBase* treePtr = &(grid->baseTree()); + TreeMapIter mapIter = treeMap.find(treePtr); + + bool isInstance = ((mapIter != treeMap.end()) + && (mapIter->second.saveFloatAsHalf() == gd.saveFloatAsHalf())); + + if (mEnableInstancing && isInstance) { + // This grid's tree is shared with another grid that has already been written. + // Get the name of the other grid. + gd.setInstanceParentName(mapIter->second.uniqueName()); + // Write out this grid's descriptor and metadata, but not its tree. + writeGridInstance(gd, grid, os, seekable); + + OPENVDB_LOG_DEBUG_RUNTIME("io::Archive::write(): " + << GridDescriptor::nameAsString(gd.uniqueName()) + << " (" << std::hex << treePtr << std::dec << ")" + << " is an instance of " + << GridDescriptor::nameAsString(gd.instanceParentName())); + } else { + // Write out the grid descriptor and its associated grid. + writeGrid(gd, grid, os, seekable); + // Record the grid's tree pointer so that the tree doesn't get written + // more than once. + treeMap[treePtr] = gd; + } + } + + // Some compression options (e.g., mask compression) are set per grid. + // Restore the original settings before writing the next grid. + io::setDataCompression(os, compression()); + } +} + + +void +Archive::writeGrid(GridDescriptor& gd, GridBase::ConstPtr grid, + std::ostream& os, bool seekable) const +{ + // Restore file-level stream metadata on exit. + struct OnExit { + OnExit(std::ios_base& strm_): strm(&strm_), ptr(strm_.pword(sStreamState.metadata)) {} + ~OnExit() { strm->pword(sStreamState.metadata) = ptr; } + std::ios_base* strm; + void* ptr; + }; + OnExit restore(os); + + // Stream metadata varies per grid, so make a copy of the file-level stream metadata. + io::StreamMetadata::Ptr streamMetadata; + if (io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(os)) { + streamMetadata.reset(new StreamMetadata(*meta)); + } else { + streamMetadata.reset(new StreamMetadata); + } + streamMetadata->setHalfFloat(grid->saveFloatAsHalf()); + streamMetadata->gridMetadata() = static_cast(*grid); + io::setStreamMetadataPtr(os, streamMetadata, /*transfer=*/false); + + // Write out the Descriptor's header information (grid name and type) + gd.writeHeader(os); + + // Save the curent stream position as postion to where the offsets for + // this GridDescriptor will be written to. + int64_t offsetPos = (seekable ? int64_t(os.tellp()) : 0); + + // Write out the offset information. At this point it will be incorrect. + // But we need to write it out to move the stream head forward. + gd.writeStreamPos(os); + + // Now we know the starting grid storage position. + if (seekable) gd.setGridPos(os.tellp()); + + // Save the compression settings for this grid. + setGridCompression(os, *grid); + + // copy grid and add delay load metadata + const auto copyOfGrid = grid->copyGrid(); // shallow copy + const auto nonConstCopyOfGrid = ConstPtrCast(copyOfGrid); + nonConstCopyOfGrid->insertMeta(GridBase::META_FILE_DELAYED_LOAD, + DelayedLoadMetadata()); + DelayedLoadMetadata::Ptr delayLoadMeta = + nonConstCopyOfGrid->getMetadata(GridBase::META_FILE_DELAYED_LOAD); + if (!populateDelayedLoadMetadata(*delayLoadMeta, *grid, compression())) { + nonConstCopyOfGrid->removeMeta(GridBase::META_FILE_DELAYED_LOAD); + } + + // Save the grid's metadata and transform. + if (getWriteGridStatsMetadata(os)) { + // Compute and add grid statistics metadata. + nonConstCopyOfGrid->addStatsMetadata(); + nonConstCopyOfGrid->insertMeta(GridBase::META_FILE_COMPRESSION, + StringMetadata(compressionToString(getDataCompression(os)))); + } + copyOfGrid->writeMeta(os); + grid->writeTransform(os); + + // Save the grid's structure. + grid->writeTopology(os); + + // Now we know the grid block storage position. + if (seekable) gd.setBlockPos(os.tellp()); + + // Save out the data blocks of the grid. + grid->writeBuffers(os); + + // Now we know the end position of this grid. + if (seekable) gd.setEndPos(os.tellp()); + + if (seekable) { + // Now, go back to where the Descriptor's offset information is written + // and write the offsets again. + os.seekp(offsetPos, std::ios_base::beg); + gd.writeStreamPos(os); + + // Now seek back to the end. + gd.seekToEnd(os); + } +} + + +void +Archive::writeGridInstance(GridDescriptor& gd, GridBase::ConstPtr grid, + std::ostream& os, bool seekable) const +{ + // Write out the Descriptor's header information (grid name, type + // and instance parent name). + gd.writeHeader(os); + + // Save the curent stream position as postion to where the offsets for + // this GridDescriptor will be written to. + int64_t offsetPos = (seekable ? int64_t(os.tellp()) : 0); + + // Write out the offset information. At this point it will be incorrect. + // But we need to write it out to move the stream head forward. + gd.writeStreamPos(os); + + // Now we know the starting grid storage position. + if (seekable) gd.setGridPos(os.tellp()); + + // Save the compression settings for this grid. + setGridCompression(os, *grid); + + // Save the grid's metadata and transform. + grid->writeMeta(os); + grid->writeTransform(os); + + // Now we know the end position of this grid. + if (seekable) gd.setEndPos(os.tellp()); + + if (seekable) { + // Now, go back to where the Descriptor's offset information is written + // and write the offsets again. + os.seekp(offsetPos, std::ios_base::beg); + gd.writeStreamPos(os); + + // Now seek back to the end. + gd.seekToEnd(os); + } +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/Archive.h b/openvdb/io/Archive.h new file mode 100644 index 00000000..b04239c0 --- /dev/null +++ b/openvdb/io/Archive.h @@ -0,0 +1,197 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED +#define OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED + +#include +#include "Compression.h" // for COMPRESS_ZIP, etc. +#include +#include +#include +#include // for VersionId +#include +#include +#include +#include +#include +#include + + +class TestFile; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +class GridDescriptor; + + +/// Grid serializer/unserializer +class OPENVDB_API Archive +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + static const uint32_t DEFAULT_COMPRESSION_FLAGS; + + Archive(); + Archive(const Archive&) = default; + Archive& operator=(const Archive&) = default; + virtual ~Archive(); + + /// @brief Return a copy of this archive. + virtual Ptr copy() const; + + /// @brief Return the UUID that was most recently written (or read, + /// if no UUID has been written yet). + std::string getUniqueTag() const; + /// @brief Return @c true if the given UUID matches this archive's UUID. + bool isIdentical(const std::string& uuidStr) const; + + /// @brief Return the file format version number of the input stream. + uint32_t fileVersion() const { return mFileVersion; } + /// @brief Return the (major, minor) version number of the library that was + /// used to write the input stream. + VersionId libraryVersion() const { return mLibraryVersion; } + /// @brief Return a string of the form "./", giving the + /// library and file format version numbers associated with the input stream. + std::string version() const; + + /// @brief Return @c true if trees shared by multiple grids are written out + /// only once, @c false if they are written out once per grid. + bool isInstancingEnabled() const { return mEnableInstancing; } + /// @brief Specify whether trees shared by multiple grids should be + /// written out only once (@c true) or once per grid (@c false). + /// @note Instancing is enabled by default. + void setInstancingEnabled(bool b) { mEnableInstancing = b; } + + /// Return @c true if the OpenVDB library includes support for the Blosc compressor. + static bool hasBloscCompression(); + + /// Return a bit mask specifying compression options for the data stream. + uint32_t compression() const { return mCompression; } + /// @brief Specify whether and how the data stream should be compressed. + /// @param c bitwise OR (e.g., COMPRESS_ZIP | COMPRESS_ACTIVE_MASK) of + /// compression option flags (see Compression.h for the available flags) + /// @note Not all combinations of compression options are supported. + void setCompression(uint32_t c) { mCompression = c; } + + /// @brief Return @c true if grid statistics (active voxel count and + /// bounding box, etc.) are computed and written as grid metadata. + bool isGridStatsMetadataEnabled() const { return mEnableGridStats; } + /// @brief Specify whether grid statistics (active voxel count and + /// bounding box, etc.) should be computed and written as grid metadata. + void setGridStatsMetadataEnabled(bool b) { mEnableGridStats = b; } + + /// @brief Write the grids in the given container to this archive's output stream. + virtual void write(const GridCPtrVec&, const MetaMap& = MetaMap()) const {} + + /// @brief Return @c true if delayed loading is enabled. + /// @details If enabled, delayed loading can be disabled for individual files, + /// but not vice-versa. + /// @note Define the environment variable @c OPENVDB_DISABLE_DELAYED_LOAD + /// to disable delayed loading unconditionally. + static bool isDelayedLoadingEnabled(); + +protected: + /// @brief Return @c true if the input stream contains grid offsets + /// that allow for random access or partial reading. + bool inputHasGridOffsets() const { return mInputHasGridOffsets; } + void setInputHasGridOffsets(bool b) { mInputHasGridOffsets = b; } + + /// @brief Tag the given input stream with the input file format version number. + /// + /// The tag can be retrieved with getFormatVersion(). + /// @sa getFormatVersion() + void setFormatVersion(std::istream&); + + /// @brief Tag the given input stream with the version number of + /// the library with which the input stream was created. + /// + /// The tag can be retrieved with getLibraryVersion(). + /// @sa getLibraryVersion() + void setLibraryVersion(std::istream&); + + /// @brief Tag the given input stream with flags indicating whether + /// the input stream contains compressed data and how it is compressed. + void setDataCompression(std::istream&); + + /// @brief Tag an output stream with flags specifying only those + /// compression options that are applicable to the given grid. + void setGridCompression(std::ostream&, const GridBase&) const; + /// @brief Read in the compression flags for a grid and + /// tag the given input stream with those flags. + static void readGridCompression(std::istream&); + + /// Read in and return the number of grids on the input stream. + static int32_t readGridCount(std::istream&); + + /// Populate the given grid from the input stream. + static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&); + /// @brief Populate the given grid from the input stream, but only where it + /// intersects the given world-space bounding box. + static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&, const BBoxd&); + /// @brief Populate the given grid from the input stream, but only where it + /// intersects the given index-space bounding box. + static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&, const CoordBBox&); + + using NamedGridMap = std::map; + + /// @brief If the grid represented by the given grid descriptor + /// is an instance, connect it with its instance parent. + void connectInstance(const GridDescriptor&, const NamedGridMap&) const; + + /// Write the given grid descriptor and grid to an output stream + /// and update the GridDescriptor offsets. + /// @param seekable if true, the output stream supports seek operations + void writeGrid(GridDescriptor&, GridBase::ConstPtr, std::ostream&, bool seekable) const; + /// Write the given grid descriptor and grid metadata to an output stream + /// and update the GridDescriptor offsets, but don't write the grid's tree, + /// since it is shared with another grid. + /// @param seekable if true, the output stream supports seek operations + void writeGridInstance(GridDescriptor&, GridBase::ConstPtr, + std::ostream&, bool seekable) const; + + /// @brief Read the magic number, version numbers, UUID, etc. from the given input stream. + /// @return @c true if the input UUID differs from the previously-read UUID. + bool readHeader(std::istream&); + /// @brief Write the magic number, version numbers, UUID, etc. to the given output stream. + /// @param seekable if true, the output stream supports seek operations + /// @todo This method should not be const since it actually redefines the UUID! + void writeHeader(std::ostream&, bool seekable) const; + + //@{ + /// Write the given grids to an output stream. + void write(std::ostream&, const GridPtrVec&, bool seekable, const MetaMap& = MetaMap()) const; + void write(std::ostream&, const GridCPtrVec&, bool seekable, const MetaMap& = MetaMap()) const; + //@} + +private: + friend class ::TestFile; + + /// The version of the file that was read + uint32_t mFileVersion; + /// The version of the library that was used to create the file that was read + VersionId mLibraryVersion; + /// 16-byte (128-bit) UUID + mutable boost::uuids::uuid mUuid;// needs to be mutable since writeHeader is const! + /// Flag indicating whether the input stream contains grid offsets + /// and therefore supports partial reading + bool mInputHasGridOffsets; + /// Flag indicating whether a tree shared by multiple grids should be + /// written out only once (true) or once per grid (false) + bool mEnableInstancing; + /// Flags indicating whether and how the data stream is compressed + uint32_t mCompression; + /// Flag indicating whether grid statistics metadata should be written + bool mEnableGridStats; +}; // class Archive + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED diff --git a/openvdb/io/Compression.cc b/openvdb/io/Compression.cc new file mode 100644 index 00000000..43c929cc --- /dev/null +++ b/openvdb/io/Compression.cc @@ -0,0 +1,281 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Compression.h" + +#include +#include +#include +#include +#ifdef OPENVDB_USE_BLOSC +#include +#endif + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +std::string +compressionToString(uint32_t flags) +{ + if (flags == COMPRESS_NONE) return "none"; + + std::vector words; + if (flags & COMPRESS_ZIP) words.push_back("zip"); + if (flags & COMPRESS_BLOSC) words.push_back("blosc"); + if (flags & COMPRESS_ACTIVE_MASK) words.push_back("active values"); + return boost::join(words, " + "); +} + + +//////////////////////////////////////// + + +namespace { +const int ZIP_COMPRESSION_LEVEL = Z_DEFAULT_COMPRESSION; ///< @todo use Z_BEST_SPEED? +} + + +size_t +zipToStreamSize(const char* data, size_t numBytes) +{ + // Get an upper bound on the size of the compressed data. + uLongf numZippedBytes = compressBound(numBytes); + // Compress the data. + std::unique_ptr zippedData(new Bytef[numZippedBytes]); + int status = compress2( + /*dest=*/zippedData.get(), &numZippedBytes, + /*src=*/reinterpret_cast(data), numBytes, + /*level=*/ZIP_COMPRESSION_LEVEL); + if (status == Z_OK && numZippedBytes < numBytes) { + return size_t(numZippedBytes); + } else { + return size_t(numBytes); + } +} + + +void +zipToStream(std::ostream& os, const char* data, size_t numBytes) +{ + // Get an upper bound on the size of the compressed data. + uLongf numZippedBytes = compressBound(numBytes); + // Compress the data. + std::unique_ptr zippedData(new Bytef[numZippedBytes]); + int status = compress2( + /*dest=*/zippedData.get(), &numZippedBytes, + /*src=*/reinterpret_cast(data), numBytes, + /*level=*/ZIP_COMPRESSION_LEVEL); + if (status != Z_OK) { + std::string errDescr; + if (const char* s = zError(status)) errDescr = s; + if (!errDescr.empty()) errDescr = " (" + errDescr + ")"; + OPENVDB_LOG_DEBUG("zlib compress2() returned error code " << status << errDescr); + } + if (status == Z_OK && numZippedBytes < numBytes) { + // Write the size of the compressed data. + Int64 outZippedBytes = numZippedBytes; + os.write(reinterpret_cast(&outZippedBytes), 8); + // Write the compressed data. + os.write(reinterpret_cast(zippedData.get()), outZippedBytes); + } else { + // Write the size of the uncompressed data. + Int64 negBytes = -numBytes; + os.write(reinterpret_cast(&negBytes), 8); + // Write the uncompressed data. + os.write(reinterpret_cast(data), numBytes); + } +} + + +void +unzipFromStream(std::istream& is, char* data, size_t numBytes) +{ + // Read the size of the compressed data. + // A negative size indicates uncompressed data. + Int64 numZippedBytes; + is.read(reinterpret_cast(&numZippedBytes), 8); + + if (numZippedBytes <= 0) { + // Read the uncompressed data. + if (data == nullptr) { + is.seekg(-numZippedBytes, std::ios_base::cur); + } else { + is.read(data, -numZippedBytes); + } + if (size_t(-numZippedBytes) != numBytes) { + OPENVDB_THROW(RuntimeError, "Expected to read a " << numBytes + << "-byte chunk, got a " << -numZippedBytes << "-byte chunk"); + } + } else { + if (data == nullptr) { + // Seek over the compressed data. + is.seekg(numZippedBytes, std::ios_base::cur); + } else { + // Read the compressed data. + std::unique_ptr zippedData(new Bytef[numZippedBytes]); + is.read(reinterpret_cast(zippedData.get()), numZippedBytes); + // Uncompress the data. + uLongf numUnzippedBytes = numBytes; + int status = uncompress( + /*dest=*/reinterpret_cast(data), &numUnzippedBytes, + /*src=*/zippedData.get(), static_cast(numZippedBytes)); + if (status != Z_OK) { + std::string errDescr; + if (const char* s = zError(status)) errDescr = s; + if (!errDescr.empty()) errDescr = " (" + errDescr + ")"; + OPENVDB_LOG_DEBUG("zlib uncompress() returned error code " << status << errDescr); + } + if (numUnzippedBytes != numBytes) { + OPENVDB_THROW(RuntimeError, "Expected to decompress " << numBytes + << " byte" << (numBytes == 1 ? "" : "s") << ", got " + << numZippedBytes << " byte" << (numZippedBytes == 1 ? "" : "s")); + } + } + } +} + + +namespace { + +#ifdef OPENVDB_USE_BLOSC +int bloscCompress(size_t inBytes, const char* data, char* compressedData, int outBytes) +{ + return blosc_compress_ctx( + /*clevel=*/9, // 0 (no compression) to 9 (maximum compression) + /*doshuffle=*/true, + /*typesize=*/sizeof(float), //for optimal float and Vec3f compression + /*srcsize=*/inBytes, + /*src=*/data, + /*dest=*/compressedData, + /*destsize=*/outBytes, + BLOSC_LZ4_COMPNAME, + /*blocksize=*/inBytes,//previously set to 256 (in v3.x) + /*numthreads=*/1); +} +#endif + +} // namespace + + +#ifndef OPENVDB_USE_BLOSC +size_t +bloscToStreamSize(const char*, size_t, size_t) +{ + OPENVDB_THROW(IoError, "Blosc encoding is not supported"); +} +#else +size_t +bloscToStreamSize(const char* data, size_t valSize, size_t numVals) +{ + const size_t inBytes = valSize * numVals; + + int outBytes = int(inBytes) + BLOSC_MAX_OVERHEAD; + std::unique_ptr compressedData(new char[outBytes]); + + outBytes = bloscCompress(inBytes, data, compressedData.get(), outBytes); + + if (outBytes <= 0) { + return size_t(inBytes); + } + + return size_t(outBytes); +} +#endif + + +#ifndef OPENVDB_USE_BLOSC +void +bloscToStream(std::ostream&, const char*, size_t, size_t) +{ + OPENVDB_THROW(IoError, "Blosc encoding is not supported"); +} +#else +void +bloscToStream(std::ostream& os, const char* data, size_t valSize, size_t numVals) +{ + const size_t inBytes = valSize * numVals; + + int outBytes = int(inBytes) + BLOSC_MAX_OVERHEAD; + std::unique_ptr compressedData(new char[outBytes]); + + outBytes = bloscCompress(inBytes, data, compressedData.get(), outBytes); + + if (outBytes <= 0) { + std::ostringstream ostr; + ostr << "Blosc failed to compress " << inBytes << " byte" << (inBytes == 1 ? "" : "s"); + if (outBytes < 0) ostr << " (internal error " << outBytes << ")"; + OPENVDB_LOG_DEBUG(ostr.str()); + + // Write the size of the uncompressed data. + Int64 negBytes = -inBytes; + os.write(reinterpret_cast(&negBytes), 8); + // Write the uncompressed data. + os.write(reinterpret_cast(data), inBytes); + } else { + // Write the size of the compressed data. + Int64 numBytes = outBytes; + os.write(reinterpret_cast(&numBytes), 8); + // Write the compressed data. + os.write(reinterpret_cast(compressedData.get()), outBytes); + } +} +#endif + + +#ifndef OPENVDB_USE_BLOSC +void +bloscFromStream(std::istream&, char*, size_t) +{ + OPENVDB_THROW(IoError, "Blosc decoding is not supported"); +} +#else +void +bloscFromStream(std::istream& is, char* data, size_t numBytes) +{ + // Read the size of the compressed data. + // A negative size indicates uncompressed data. + Int64 numCompressedBytes; + is.read(reinterpret_cast(&numCompressedBytes), 8); + + if (numCompressedBytes <= 0) { + // Read the uncompressed data. + if (data == nullptr) { + is.seekg(-numCompressedBytes, std::ios_base::cur); + } else { + is.read(data, -numCompressedBytes); + } + if (size_t(-numCompressedBytes) != numBytes) { + OPENVDB_THROW(RuntimeError, "Expected to read a " << numBytes + << "-byte uncompressed chunk, got a " << -numCompressedBytes << "-byte chunk"); + } + } else { + if (data == nullptr) { + // Seek over the compressed data. + is.seekg(numCompressedBytes, std::ios_base::cur); + } else { + // Read the compressed data. + std::unique_ptr compressedData(new char[numCompressedBytes]); + is.read(reinterpret_cast(compressedData.get()), numCompressedBytes); + // Uncompress the data. + const int numUncompressedBytes = blosc_decompress_ctx( + /*src=*/compressedData.get(), /*dest=*/data, numBytes, /*numthreads=*/1); + if (numUncompressedBytes < 1) { + OPENVDB_LOG_DEBUG("blosc_decompress() returned error code " + << numUncompressedBytes); + } + if (numUncompressedBytes != Int64(numBytes)) { + OPENVDB_THROW(RuntimeError, "Expected to decompress " << numBytes + << " byte" << (numBytes == 1 ? "" : "s") << ", got " + << numUncompressedBytes << " byte" << (numUncompressedBytes == 1 ? "" : "s")); + } + } + } +} +#endif + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/Compression.h b/openvdb/io/Compression.h new file mode 100644 index 00000000..9f1b75fe --- /dev/null +++ b/openvdb/io/Compression.h @@ -0,0 +1,755 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_IO_COMPRESSION_HAS_BEEN_INCLUDED +#define OPENVDB_IO_COMPRESSION_HAS_BEEN_INCLUDED + +#include +#include +#include // for negative() +#include "io.h" // for getDataCompression(), etc. +#include "DelayedLoadMetadata.h" +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +/// @brief OR-able bit flags for compression options on input and output streams +/// @details +///
+///
COMPRESS_NONE +///
On write, don't compress data.
+/// On read, the input stream contains uncompressed data. +/// +///
COMPRESS_ZIP +///
When writing grids other than level sets or fog volumes, apply +/// ZLIB compression to internal and leaf node value buffers.
+/// When reading grids other than level sets or fog volumes, indicate that +/// the value buffers of internal and leaf nodes are ZLIB-compressed.
+/// ZLIB compresses well but is slow. +/// +///
COMPRESS_ACTIVE_MASK +///
When writing a grid of any class, don't output a node's inactive values +/// if it has two or fewer distinct values. Instead, output minimal information +/// to permit the lossless reconstruction of inactive values.
+/// On read, nodes might have been stored without inactive values. +/// Where necessary, reconstruct inactive values from available information. +/// +///
COMPRESS_BLOSC +///
When writing grids other than level sets or fog volumes, apply +/// Blosc compression to internal and leaf node value buffers.
+/// When reading grids other than level sets or fog volumes, indicate that +/// the value buffers of internal and leaf nodes are Blosc-compressed.
+/// Blosc is much faster than ZLIB and produces comparable file sizes. +///
+enum { + COMPRESS_NONE = 0, + COMPRESS_ZIP = 0x1, + COMPRESS_ACTIVE_MASK = 0x2, + COMPRESS_BLOSC = 0x4 +}; + +/// Return a string describing the given compression flags. +OPENVDB_API std::string compressionToString(uint32_t flags); + + +//////////////////////////////////////// + + +/// @internal Per-node indicator byte that specifies what additional metadata +/// is stored to permit reconstruction of inactive values +enum { + /*0*/ NO_MASK_OR_INACTIVE_VALS, // no inactive vals, or all inactive vals are +background + /*1*/ NO_MASK_AND_MINUS_BG, // all inactive vals are -background + /*2*/ NO_MASK_AND_ONE_INACTIVE_VAL, // all inactive vals have the same non-background val + /*3*/ MASK_AND_NO_INACTIVE_VALS, // mask selects between -background and +background + /*4*/ MASK_AND_ONE_INACTIVE_VAL, // mask selects between backgd and one other inactive val + /*5*/ MASK_AND_TWO_INACTIVE_VALS, // mask selects between two non-background inactive vals + /*6*/ NO_MASK_AND_ALL_VALS // > 2 inactive vals, so no mask compression at all +}; + + +template +struct MaskCompress +{ + // Comparison function for values + static inline bool eq(const ValueT& a, const ValueT& b) { + return math::isExactlyEqual(a, b); + } + + MaskCompress( + const MaskT& valueMask, const MaskT& childMask, + const ValueT* srcBuf, const ValueT& background) + { + /// @todo Consider all values, not just inactive values? + inactiveVal[0] = inactiveVal[1] = background; + int numUniqueInactiveVals = 0; + for (typename MaskT::OffIterator it = valueMask.beginOff(); + numUniqueInactiveVals < 3 && it; ++it) + { + const Index32 idx = it.pos(); + + // Skip inactive values that are actually child node pointers. + if (childMask.isOn(idx)) continue; + + const ValueT& val = srcBuf[idx]; + const bool unique = !( + (numUniqueInactiveVals > 0 && MaskCompress::eq(val, inactiveVal[0])) || + (numUniqueInactiveVals > 1 && MaskCompress::eq(val, inactiveVal[1])) + ); + if (unique) { + if (numUniqueInactiveVals < 2) inactiveVal[numUniqueInactiveVals] = val; + ++numUniqueInactiveVals; + } + } + + metadata = NO_MASK_OR_INACTIVE_VALS; + + if (numUniqueInactiveVals == 1) { + if (!MaskCompress::eq(inactiveVal[0], background)) { + if (MaskCompress::eq(inactiveVal[0], math::negative(background))) { + metadata = NO_MASK_AND_MINUS_BG; + } else { + metadata = NO_MASK_AND_ONE_INACTIVE_VAL; + } + } + } else if (numUniqueInactiveVals == 2) { + metadata = NO_MASK_OR_INACTIVE_VALS; + if (!MaskCompress::eq(inactiveVal[0], background) && !MaskCompress::eq(inactiveVal[1], background)) { + // If neither inactive value is equal to the background, both values + // need to be saved, along with a mask that selects between them. + metadata = MASK_AND_TWO_INACTIVE_VALS; + + } else if (MaskCompress::eq(inactiveVal[1], background)) { + if (MaskCompress::eq(inactiveVal[0], math::negative(background))) { + // If the second inactive value is equal to the background and + // the first is equal to -background, neither value needs to be saved, + // but save a mask that selects between -background and +background. + metadata = MASK_AND_NO_INACTIVE_VALS; + } else { + // If the second inactive value is equal to the background, only + // the first value needs to be saved, along with a mask that selects + // between it and the background. + metadata = MASK_AND_ONE_INACTIVE_VAL; + } + } else if (MaskCompress::eq(inactiveVal[0], background)) { + if (MaskCompress::eq(inactiveVal[1], math::negative(background))) { + // If the first inactive value is equal to the background and + // the second is equal to -background, neither value needs to be saved, + // but save a mask that selects between -background and +background. + metadata = MASK_AND_NO_INACTIVE_VALS; + std::swap(inactiveVal[0], inactiveVal[1]); + } else { + // If the first inactive value is equal to the background, swap it + // with the second value and save only that value, along with a mask + // that selects between it and the background. + std::swap(inactiveVal[0], inactiveVal[1]); + metadata = MASK_AND_ONE_INACTIVE_VAL; + } + } + } else if (numUniqueInactiveVals > 2) { + metadata = NO_MASK_AND_ALL_VALS; + } + } + + int8_t metadata = NO_MASK_AND_ALL_VALS; + ValueT inactiveVal[2]; +}; + + +//////////////////////////////////////// + + +/// @brief RealToHalf and its specializations define a mapping from +/// floating-point data types to analogous half float types. +template +struct RealToHalf { + enum { isReal = false }; // unless otherwise specified, type T is not a floating-point type + using HalfT = T; // type T's half float analogue is T itself + static HalfT convert(const T& val) { return val; } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = half; + static HalfT convert(float val) { return HalfT(val); } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = half; + // A half can only be constructed from a float, so cast the value to a float first. + static HalfT convert(double val) { return HalfT(float(val)); } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = Vec2H; + static HalfT convert(const Vec2s& val) { return HalfT(val); } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = Vec2H; + // A half can only be constructed from a float, so cast the vector's elements to floats first. + static HalfT convert(const Vec2d& val) { return HalfT(Vec2s(val)); } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = Vec3H; + static HalfT convert(const Vec3s& val) { return HalfT(val); } +}; +template<> struct RealToHalf { + enum { isReal = true }; + using HalfT = Vec3H; + // A half can only be constructed from a float, so cast the vector's elements to floats first. + static HalfT convert(const Vec3d& val) { return HalfT(Vec3s(val)); } +}; + + +/// Return the given value truncated to 16-bit float precision. +template +inline T +truncateRealToHalf(const T& val) +{ + return T(RealToHalf::convert(val)); +} + + +//////////////////////////////////////// + + +OPENVDB_API size_t zipToStreamSize(const char* data, size_t numBytes); +OPENVDB_API void zipToStream(std::ostream&, const char* data, size_t numBytes); +OPENVDB_API void unzipFromStream(std::istream&, char* data, size_t numBytes); +OPENVDB_API size_t bloscToStreamSize(const char* data, size_t valSize, size_t numVals); +OPENVDB_API void bloscToStream(std::ostream&, const char* data, size_t valSize, size_t numVals); +OPENVDB_API void bloscFromStream(std::istream&, char* data, size_t numBytes); + +/// @brief Read data from a stream. +/// @param is the input stream +/// @param data the contiguous array of data to read in +/// @param count the number of elements to read in +/// @param compression whether and how the data is compressed (either COMPRESS_NONE, +/// COMPRESS_ZIP, COMPRESS_ACTIVE_MASK or COMPRESS_BLOSC) +/// @param metadata optional pointer to a DelayedLoadMetadata object that stores +/// the size of the compressed buffer +/// @param metadataOffset offset into DelayedLoadMetadata, ignored if pointer is null +/// @throw IoError if @a compression is COMPRESS_BLOSC but OpenVDB was compiled +/// without Blosc support. +/// @details This default implementation is instantiated only for types +/// whose size can be determined by the sizeof() operator. +template +inline void +readData(std::istream& is, T* data, Index count, uint32_t compression, + DelayedLoadMetadata* metadata = nullptr, size_t metadataOffset = size_t(0)) +{ + const bool seek = data == nullptr; + if (seek) { + assert(!getStreamMetadataPtr(is) || getStreamMetadataPtr(is)->seekable()); + } + const bool hasCompression = compression & (COMPRESS_BLOSC | COMPRESS_ZIP); + + if (metadata && seek && hasCompression) { + size_t compressedSize = metadata->getCompressedSize(metadataOffset); + is.seekg(compressedSize, std::ios_base::cur); + } else if (compression & COMPRESS_BLOSC) { + bloscFromStream(is, reinterpret_cast(data), sizeof(T) * count); + } else if (compression & COMPRESS_ZIP) { + unzipFromStream(is, reinterpret_cast(data), sizeof(T) * count); + } else if (seek) { + is.seekg(sizeof(T) * count, std::ios_base::cur); + } else { + is.read(reinterpret_cast(data), sizeof(T) * count); + } +} + +/// Specialization for std::string input +template<> +inline void +readData(std::istream& is, std::string* data, Index count, uint32_t /*compression*/, + DelayedLoadMetadata* /*metadata*/, size_t /*metadataOffset*/) +{ + for (Index i = 0; i < count; ++i) { + size_t len = 0; + is >> len; + //data[i].resize(len); + //is.read(&(data[i][0]), len); + + std::string buffer(len+1, ' '); + is.read(&buffer[0], len+1); + if (data != nullptr) data[i].assign(buffer, 0, len); + } +} + +/// HalfReader wraps a static function, read(), that is analogous to readData(), above, +/// except that it is partially specialized for floating-point types in order to promote +/// 16-bit half float values to full float. A wrapper class is required because +/// only classes, not functions, can be partially specialized. +template struct HalfReader; +/// Partial specialization for non-floating-point types (no half to float promotion) +template +struct HalfReader { + static inline void read(std::istream& is, T* data, Index count, uint32_t compression, + DelayedLoadMetadata* metadata = nullptr, size_t metadataOffset = size_t(0)) { + readData(is, data, count, compression, metadata, metadataOffset); + } +}; +/// Partial specialization for floating-point types +template +struct HalfReader { + using HalfT = typename RealToHalf::HalfT; + static inline void read(std::istream& is, T* data, Index count, uint32_t compression, + DelayedLoadMetadata* metadata = nullptr, size_t metadataOffset = size_t(0)) { + if (count < 1) return; + if (data == nullptr) { + // seek mode - pass through null pointer + readData(is, nullptr, count, compression, metadata, metadataOffset); + } else { + std::vector halfData(count); // temp buffer into which to read half float values + readData(is, reinterpret_cast(&halfData[0]), count, compression, + metadata, metadataOffset); + // Copy half float values from the temporary buffer to the full float output array. + std::copy(halfData.begin(), halfData.end(), data); + } + } +}; + + +template +inline size_t +writeDataSize(const T *data, Index count, uint32_t compression) +{ + if (compression & COMPRESS_BLOSC) { + return bloscToStreamSize(reinterpret_cast(data), sizeof(T), count); + } else if (compression & COMPRESS_ZIP) { + return zipToStreamSize(reinterpret_cast(data), sizeof(T) * count); + } else { + return sizeof(T) * count; + } +} + + +/// Specialization for std::string output +template<> +inline size_t +writeDataSize(const std::string* data, Index count, + uint32_t /*compression*/) ///< @todo add compression +{ + size_t size(0); + for (Index i = 0; i < count; ++i) { + const size_t len = data[i].size(); + size += sizeof(size_t) + (len+1); + } + return size; +} + + +/// Write data to a stream. +/// @param os the output stream +/// @param data the contiguous array of data to write +/// @param count the number of elements to write out +/// @param compression whether and how to compress the data (either COMPRESS_NONE, +/// COMPRESS_ZIP, COMPRESS_ACTIVE_MASK or COMPRESS_BLOSC) +/// @throw IoError if @a compression is COMPRESS_BLOSC but OpenVDB was compiled +/// without Blosc support. +/// @details This default implementation is instantiated only for types +/// whose size can be determined by the sizeof() operator. +template +inline void +writeData(std::ostream &os, const T *data, Index count, uint32_t compression) +{ + if (compression & COMPRESS_BLOSC) { + bloscToStream(os, reinterpret_cast(data), sizeof(T), count); + } else if (compression & COMPRESS_ZIP) { + zipToStream(os, reinterpret_cast(data), sizeof(T) * count); + } else { + os.write(reinterpret_cast(data), sizeof(T) * count); + } +} + +/// Specialization for std::string output +template<> +inline void +writeData(std::ostream& os, const std::string* data, Index count, + uint32_t /*compression*/) ///< @todo add compression +{ + for (Index i = 0; i < count; ++i) { + const size_t len = data[i].size(); + os << len; + os.write(data[i].c_str(), len+1); + //os.write(&(data[i][0]), len ); + } +} + +/// HalfWriter wraps a static function, write(), that is analogous to writeData(), above, +/// except that it is partially specialized for floating-point types in order to quantize +/// floating-point values to 16-bit half float. A wrapper class is required because +/// only classes, not functions, can be partially specialized. +template struct HalfWriter; +/// Partial specialization for non-floating-point types (no float to half quantization) +template +struct HalfWriter { + static inline size_t writeSize(const T* data, Index count, uint32_t compression) { + return writeDataSize(data, count, compression); + } + static inline void write(std::ostream& os, const T* data, Index count, uint32_t compression) { + writeData(os, data, count, compression); + } +}; +/// Partial specialization for floating-point types +template +struct HalfWriter { + using HalfT = typename RealToHalf::HalfT; + static inline size_t writeSize(const T* data, Index count, uint32_t compression) { + if (count < 1) return size_t(0); + // Convert full float values to half float, then output the half float array. + std::vector halfData(count); + for (Index i = 0; i < count; ++i) halfData[i] = RealToHalf::convert(data[i]); + return writeDataSize(reinterpret_cast(&halfData[0]), count, compression); + } + static inline void write(std::ostream& os, const T* data, Index count, uint32_t compression) { + if (count < 1) return; + // Convert full float values to half float, then output the half float array. + std::vector halfData(count); + for (Index i = 0; i < count; ++i) halfData[i] = RealToHalf::convert(data[i]); + writeData(os, reinterpret_cast(&halfData[0]), count, compression); + } +}; +#ifdef _MSC_VER +/// Specialization to avoid double to float warnings in MSVC +template<> +struct HalfWriter { + using HalfT = RealToHalf::HalfT; + static inline size_t writeSize(const double* data, Index count, uint32_t compression) + { + if (count < 1) return size_t(0); + // Convert full float values to half float, then output the half float array. + std::vector halfData(count); + for (Index i = 0; i < count; ++i) halfData[i] = RealToHalf::convert(data[i]); + return writeDataSize(reinterpret_cast(&halfData[0]), count, compression); + } + static inline void write(std::ostream& os, const double* data, Index count, + uint32_t compression) + { + if (count < 1) return; + // Convert full float values to half float, then output the half float array. + std::vector halfData(count); + for (Index i = 0; i < count; ++i) halfData[i] = RealToHalf::convert(data[i]); + writeData(os, reinterpret_cast(&halfData[0]), count, compression); + } +}; +#endif // _MSC_VER + + +//////////////////////////////////////// + + +/// Populate the given buffer with @a destCount values of type @c ValueT +/// read from the given stream, taking into account that the stream might +/// have been compressed via one of several supported schemes. +/// [Mainly for internal use] +/// @param is a stream from which to read data (possibly compressed, +/// depending on the stream's compression settings) +/// @param destBuf a buffer into which to read values of type @c ValueT +/// @param destCount the number of values to be stored in the buffer +/// @param valueMask a bitmask (typically, a node's value mask) indicating +/// which positions in the buffer correspond to active values +/// @param fromHalf if true, read 16-bit half floats from the input stream +/// and convert them to full floats +template +inline void +readCompressedValues(std::istream& is, ValueT* destBuf, Index destCount, + const MaskT& valueMask, bool fromHalf) +{ + // Get the stream's compression settings. + auto meta = getStreamMetadataPtr(is); + const uint32_t compression = getDataCompression(is); + const bool maskCompressed = compression & COMPRESS_ACTIVE_MASK; + + const bool seek = (destBuf == nullptr); + assert(!seek || (!meta || meta->seekable())); + + // Get delayed load metadata if it exists + + DelayedLoadMetadata::Ptr delayLoadMeta; + uint64_t leafIndex(0); + if (seek && meta && meta->delayedLoadMeta()) { + delayLoadMeta = + meta->gridMetadata().getMetadata("file_delayed_load"); + leafIndex = meta->leaf(); + } + + int8_t metadata = NO_MASK_AND_ALL_VALS; + if (getFormatVersion(is) >= OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION) { + // Read the flag that specifies what, if any, additional metadata + // (selection mask and/or inactive value(s)) is saved. + if (seek && !maskCompressed) { + is.seekg(/*bytes=*/1, std::ios_base::cur); + } else if (seek && delayLoadMeta) { + metadata = delayLoadMeta->getMask(leafIndex); + is.seekg(/*bytes=*/1, std::ios_base::cur); + } else { + is.read(reinterpret_cast(&metadata), /*bytes=*/1); + } + } + + ValueT background = zeroVal(); + if (const void* bgPtr = getGridBackgroundValuePtr(is)) { + background = *static_cast(bgPtr); + } + ValueT inactiveVal1 = background; + ValueT inactiveVal0 = + ((metadata == NO_MASK_OR_INACTIVE_VALS) ? background : math::negative(background)); + + if (metadata == NO_MASK_AND_ONE_INACTIVE_VAL || + metadata == MASK_AND_ONE_INACTIVE_VAL || + metadata == MASK_AND_TWO_INACTIVE_VALS) + { + // Read one of at most two distinct inactive values. + if (seek) { + is.seekg(/*bytes=*/sizeof(ValueT), std::ios_base::cur); + } else { + is.read(reinterpret_cast(&inactiveVal0), /*bytes=*/sizeof(ValueT)); + } + if (metadata == MASK_AND_TWO_INACTIVE_VALS) { + // Read the second of two distinct inactive values. + if (seek) { + is.seekg(/*bytes=*/sizeof(ValueT), std::ios_base::cur); + } else { + is.read(reinterpret_cast(&inactiveVal1), /*bytes=*/sizeof(ValueT)); + } + } + } + + MaskT selectionMask; + if (metadata == MASK_AND_NO_INACTIVE_VALS || + metadata == MASK_AND_ONE_INACTIVE_VAL || + metadata == MASK_AND_TWO_INACTIVE_VALS) + { + // For use in mask compression (only), read the bitmask that selects + // between two distinct inactive values. + if (seek) { + is.seekg(/*bytes=*/selectionMask.memUsage(), std::ios_base::cur); + } else { + selectionMask.load(is); + } + } + + ValueT* tempBuf = destBuf; + std::unique_ptr scopedTempBuf; + + Index tempCount = destCount; + + if (maskCompressed && metadata != NO_MASK_AND_ALL_VALS + && getFormatVersion(is) >= OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION) + { + tempCount = valueMask.countOn(); + if (!seek && tempCount != destCount) { + // If this node has inactive voxels, allocate a temporary buffer + // into which to read just the active values. + scopedTempBuf.reset(new ValueT[tempCount]); + tempBuf = scopedTempBuf.get(); + } + } + + // Read in the buffer. + if (fromHalf) { + HalfReader::isReal, ValueT>::read( + is, (seek ? nullptr : tempBuf), tempCount, compression, delayLoadMeta.get(), leafIndex); + } else { + readData( + is, (seek ? nullptr : tempBuf), tempCount, compression, delayLoadMeta.get(), leafIndex); + } + + // If mask compression is enabled and the number of active values read into + // the temp buffer is smaller than the size of the destination buffer, + // then there are missing (inactive) values. + if (!seek && maskCompressed && tempCount != destCount) { + // Restore inactive values, using the background value and, if available, + // the inside/outside mask. (For fog volumes, the destination buffer is assumed + // to be initialized to background value zero, so inactive values can be ignored.) + for (Index destIdx = 0, tempIdx = 0; destIdx < MaskT::SIZE; ++destIdx) { + if (valueMask.isOn(destIdx)) { + // Copy a saved active value into this node's buffer. + destBuf[destIdx] = tempBuf[tempIdx]; + ++tempIdx; + } else { + // Reconstruct an unsaved inactive value and copy it into this node's buffer. + destBuf[destIdx] = (selectionMask.isOn(destIdx) ? inactiveVal1 : inactiveVal0); + } + } + } +} + + +template +inline size_t +writeCompressedValuesSize(ValueT* srcBuf, Index srcCount, + const MaskT& valueMask, uint8_t maskMetadata, bool toHalf, uint32_t compress) +{ + using NonConstValueT = typename std::remove_const::type; + + const bool maskCompress = compress & COMPRESS_ACTIVE_MASK; + + Index tempCount = srcCount; + ValueT* tempBuf = srcBuf; + std::unique_ptr scopedTempBuf; + + if (maskCompress && maskMetadata != NO_MASK_AND_ALL_VALS) { + + tempCount = 0; + + Index64 onVoxels = valueMask.countOn(); + if (onVoxels > Index64(0)) { + // Create a new array to hold just the active values. + scopedTempBuf.reset(new NonConstValueT[onVoxels]); + NonConstValueT* localTempBuf = scopedTempBuf.get(); + + // Copy active values to a new, contiguous array. + for (typename MaskT::OnIterator it = valueMask.beginOn(); it; ++it, ++tempCount) { + localTempBuf[tempCount] = srcBuf[it.pos()]; + } + + tempBuf = scopedTempBuf.get(); + } + } + + // Return the buffer size. + if (toHalf) { + return HalfWriter::isReal, NonConstValueT>::writeSize( + tempBuf, tempCount, compress); + } else { + return writeDataSize(tempBuf, tempCount, compress); + } +} + + +/// Write @a srcCount values of type @c ValueT to the given stream, optionally +/// after compressing the values via one of several supported schemes. +/// [Mainly for internal use] +/// @param os a stream to which to write data (possibly compressed, depending +/// on the stream's compression settings) +/// @param srcBuf a buffer containing values of type @c ValueT to be written +/// @param srcCount the number of values stored in the buffer +/// @param valueMask a bitmask (typically, a node's value mask) indicating +/// which positions in the buffer correspond to active values +/// @param childMask a bitmask (typically, a node's child mask) indicating +/// which positions in the buffer correspond to child node pointers +/// @param toHalf if true, convert floating-point values to 16-bit half floats +template +inline void +writeCompressedValues(std::ostream& os, ValueT* srcBuf, Index srcCount, + const MaskT& valueMask, const MaskT& childMask, bool toHalf) +{ + // Get the stream's compression settings. + const uint32_t compress = getDataCompression(os); + const bool maskCompress = compress & COMPRESS_ACTIVE_MASK; + + Index tempCount = srcCount; + ValueT* tempBuf = srcBuf; + std::unique_ptr scopedTempBuf; + + int8_t metadata = NO_MASK_AND_ALL_VALS; + + if (!maskCompress) { + os.write(reinterpret_cast(&metadata), /*bytes=*/1); + } else { + // A valid level set's inactive values are either +background (outside) + // or -background (inside), and a fog volume's inactive values are all zero. + // Rather than write out all of these values, we can store just the active values + // (given that the value mask specifies their positions) and, if necessary, + // an inside/outside bitmask. + + const ValueT zero = zeroVal(); + ValueT background = zero; + if (const void* bgPtr = getGridBackgroundValuePtr(os)) { + background = *static_cast(bgPtr); + } + + MaskCompress maskCompressData(valueMask, childMask, srcBuf, background); + metadata = maskCompressData.metadata; + + os.write(reinterpret_cast(&metadata), /*bytes=*/1); + + if (metadata == NO_MASK_AND_ONE_INACTIVE_VAL || + metadata == MASK_AND_ONE_INACTIVE_VAL || + metadata == MASK_AND_TWO_INACTIVE_VALS) + { + if (!toHalf) { + // Write one of at most two distinct inactive values. + os.write(reinterpret_cast(&maskCompressData.inactiveVal[0]), sizeof(ValueT)); + if (metadata == MASK_AND_TWO_INACTIVE_VALS) { + // Write the second of two distinct inactive values. + os.write(reinterpret_cast(&maskCompressData.inactiveVal[1]), sizeof(ValueT)); + } + } else { + // Write one of at most two distinct inactive values. + ValueT truncatedVal = static_cast(truncateRealToHalf(maskCompressData.inactiveVal[0])); + os.write(reinterpret_cast(&truncatedVal), sizeof(ValueT)); + if (metadata == MASK_AND_TWO_INACTIVE_VALS) { + // Write the second of two distinct inactive values. + truncatedVal = truncateRealToHalf(maskCompressData.inactiveVal[1]); + os.write(reinterpret_cast(&truncatedVal), sizeof(ValueT)); + } + } + } + + if (metadata == NO_MASK_AND_ALL_VALS) { + // If there are more than two unique inactive values, the entire input buffer + // needs to be saved (both active and inactive values). + /// @todo Save the selection mask as long as most of the inactive values + /// are one of two values? + } else { + // Create a new array to hold just the active values. + scopedTempBuf.reset(new ValueT[srcCount]); + tempBuf = scopedTempBuf.get(); + + if (metadata == NO_MASK_OR_INACTIVE_VALS || + metadata == NO_MASK_AND_MINUS_BG || + metadata == NO_MASK_AND_ONE_INACTIVE_VAL) + { + // Copy active values to the contiguous array. + tempCount = 0; + for (typename MaskT::OnIterator it = valueMask.beginOn(); it; ++it, ++tempCount) { + tempBuf[tempCount] = srcBuf[it.pos()]; + } + } else { + // Copy active values to a new, contiguous array and populate a bitmask + // that selects between two distinct inactive values. + MaskT selectionMask; + tempCount = 0; + for (Index srcIdx = 0; srcIdx < srcCount; ++srcIdx) { + if (valueMask.isOn(srcIdx)) { // active value + tempBuf[tempCount] = srcBuf[srcIdx]; + ++tempCount; + } else { // inactive value + if (MaskCompress::eq(srcBuf[srcIdx], maskCompressData.inactiveVal[1])) { + selectionMask.setOn(srcIdx); // inactive value 1 + } // else inactive value 0 + } + } + assert(tempCount == valueMask.countOn()); + + // Write out the mask that selects between two inactive values. + selectionMask.save(os); + } + } + } + + // Write out the buffer. + if (toHalf) { + HalfWriter::isReal, ValueT>::write(os, tempBuf, tempCount, compress); + } else { + writeData(os, tempBuf, tempCount, compress); + } +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_COMPRESSION_HAS_BEEN_INCLUDED \ No newline at end of file diff --git a/openvdb/io/DelayedLoadMetadata.cc b/openvdb/io/DelayedLoadMetadata.cc new file mode 100644 index 00000000..73879683 --- /dev/null +++ b/openvdb/io/DelayedLoadMetadata.cc @@ -0,0 +1,299 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "DelayedLoadMetadata.h" + +#include + +#ifdef OPENVDB_USE_BLOSC +#include + +namespace { + +inline size_t padMask(size_t bytes) +{ + return size_t(std::ceil(static_cast(bytes+1) / + sizeof(openvdb::io::DelayedLoadMetadata::MaskType))); +} + +inline size_t padCompressedSize(size_t bytes) +{ + return size_t(std::ceil(static_cast(bytes+1) / + sizeof(openvdb::io::DelayedLoadMetadata::CompressedSizeType))); +} + +} // namespace + +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +DelayedLoadMetadata::DelayedLoadMetadata(const DelayedLoadMetadata& other) + : Metadata() + , mMask(other.mMask) + , mCompressedSize(other.mCompressedSize) +{ +} + +Name DelayedLoadMetadata::typeName() const +{ + return DelayedLoadMetadata::staticTypeName(); +} + +Metadata::Ptr DelayedLoadMetadata::copy() const +{ + Metadata::Ptr metadata(new DelayedLoadMetadata()); + metadata->copy(*this); + return metadata; +} + +void DelayedLoadMetadata::copy(const Metadata& other) +{ + const DelayedLoadMetadata* t = dynamic_cast(&other); + if (t == nullptr) OPENVDB_THROW(TypeError, "Incompatible type during copy"); + mMask = t->mMask; + mCompressedSize = t->mCompressedSize; +} + +std::string DelayedLoadMetadata::str() const +{ + return ""; +} + +bool DelayedLoadMetadata::asBool() const +{ + return false; +} + +Index32 DelayedLoadMetadata::size() const +{ + if (mMask.empty() && mCompressedSize.empty()) return Index32(0); + + // count + size_t size = sizeof(Index32); + + { // mask + size += sizeof(Index32); + size_t compressedSize = compression::bloscCompressedSize( + reinterpret_cast(mMask.data()), mMask.size()*sizeof(MaskType)); + + if (compressedSize > 0) size += compressedSize; + else size += mMask.size()*sizeof(MaskType); + } + { // compressed size + size += sizeof(Index32); + if (!mCompressedSize.empty()) { + size_t compressedSize = compression::bloscCompressedSize( + reinterpret_cast(mCompressedSize.data()), mCompressedSize.size()*sizeof(CompressedSizeType)); + + if (compressedSize > 0) size += compressedSize; + else size += mCompressedSize.size()*sizeof(CompressedSizeType); + } + } + + return static_cast(size); +} + +void DelayedLoadMetadata::clear() +{ + mMask.clear(); + mCompressedSize.clear(); +} + +bool DelayedLoadMetadata::empty() const +{ + return mMask.empty() && mCompressedSize.empty(); +} + +void DelayedLoadMetadata::resizeMask(size_t size) +{ + mMask.resize(size); +} + +void DelayedLoadMetadata::resizeCompressedSize(size_t size) +{ + mCompressedSize.resize(size); +} + +DelayedLoadMetadata::MaskType DelayedLoadMetadata::getMask(size_t index) const +{ + assert(DelayedLoadMetadata::isRegisteredType()); + assert(index < mMask.size()); + return mMask[index]; +} + +void DelayedLoadMetadata::setMask(size_t index, const MaskType& value) +{ + assert(index < mMask.size()); + mMask[index] = value; +} + +DelayedLoadMetadata::CompressedSizeType DelayedLoadMetadata::getCompressedSize(size_t index) const +{ + assert(DelayedLoadMetadata::isRegisteredType()); + assert(index < mCompressedSize.size()); + return mCompressedSize[index]; +} + +void DelayedLoadMetadata::setCompressedSize(size_t index, const CompressedSizeType& value) +{ + assert(index < mCompressedSize.size()); + mCompressedSize[index] = value; +} + +void DelayedLoadMetadata::readValue(std::istream& is, Index32 numBytes) +{ + if (numBytes == 0) return; + + // initial header size + size_t total = sizeof(Index32); + + Index32 count = 0; + is.read(reinterpret_cast(&count), sizeof(Index32)); + total += sizeof(Index32); + + Index32 bytes = 0; + is.read(reinterpret_cast(&bytes), sizeof(Index32)); + total += sizeof(Index32); + + if (bytes > Index32(0)) { + std::unique_ptr compressedBuffer(new char[bytes]); + is.read(reinterpret_cast(compressedBuffer.get()), bytes); + + total += bytes; + +#ifdef OPENVDB_USE_BLOSC + // pad to include BLOSC_MAX_OVERHEAD + size_t uncompressedBytes = openvdb::compression::bloscUncompressedSize(compressedBuffer.get()); + const size_t paddedCount = padMask(uncompressedBytes + BLOSC_MAX_OVERHEAD); + + mMask.reserve(paddedCount); + mMask.resize(count); + + // resize should never modify capacity for smaller vector sizes + assert(mMask.capacity() >= paddedCount); + + compression::bloscDecompress(reinterpret_cast(mMask.data()), count*sizeof(MaskType), mMask.capacity()*sizeof(MaskType), compressedBuffer.get()); +#endif + } else { + mMask.resize(count); + is.read(reinterpret_cast(mMask.data()), count*sizeof(MaskType)); + total += count*sizeof(MaskType); + } + + is.read(reinterpret_cast(&bytes), sizeof(Index32)); + + if (bytes != std::numeric_limits::max()) { + if (bytes > Index32(0)) { + std::unique_ptr compressedBuffer(new char[bytes]); + is.read(reinterpret_cast(compressedBuffer.get()), bytes); + + total += size_t(bytes); + +#ifdef OPENVDB_USE_BLOSC + // pad to include BLOSC_MAX_OVERHEAD + size_t uncompressedBytes = openvdb::compression::bloscUncompressedSize(compressedBuffer.get()); + const size_t paddedCount = padCompressedSize(uncompressedBytes + BLOSC_MAX_OVERHEAD); + + mCompressedSize.reserve(paddedCount); + mCompressedSize.resize(count); + + // resize should never modify capacity for smaller vector sizes + assert(mCompressedSize.capacity() >= paddedCount); + + compression::bloscDecompress(reinterpret_cast(mCompressedSize.data()), count*sizeof(CompressedSizeType), mCompressedSize.capacity()*sizeof(CompressedSizeType), compressedBuffer.get()); +#endif + } else { + mCompressedSize.resize(count); + is.read(reinterpret_cast(mCompressedSize.data()), count*sizeof(CompressedSizeType)); + total += count*sizeof(CompressedSizeType); + } + } + + Index32 totalBytes = static_cast(total); + + if (totalBytes < numBytes) { + // Read and discard any unknown bytes at the end of the metadata for forwards-compatibility + // (without seeking, because the stream might not be seekable). + const size_t BUFFER_SIZE = 1024; + std::vector buffer(BUFFER_SIZE); + for (Index32 bytesRemaining = numBytes - totalBytes; bytesRemaining > 0; ) { + const Index32 bytesToSkip = std::min(bytesRemaining, BUFFER_SIZE); + is.read(&buffer[0], bytesToSkip); + bytesRemaining -= bytesToSkip; + } + } +} + +void DelayedLoadMetadata::writeValue(std::ostream& os) const +{ + // metadata has a limit of 2^32 bytes + assert(mMask.size() < std::numeric_limits::max()); + assert(mCompressedSize.size() < std::numeric_limits::max()); + + if (mMask.empty() && mCompressedSize.empty()) return; + + assert(mCompressedSize.empty() || (mMask.size() == mCompressedSize.size())); + + Index32 count = static_cast(mMask.size()); + os.write(reinterpret_cast(&count), sizeof(Index32)); + + const Index32 zeroSize(0); + const Index32 maxSize(std::numeric_limits::max()); + + { // mask buffer + size_t compressedBytes(0); + std::unique_ptr compressedBuffer; + if (compression::bloscCanCompress()) { + compressedBuffer = compression::bloscCompress( + reinterpret_cast(mMask.data()), + mMask.size()*sizeof(MaskType), compressedBytes, /*resize=*/false); + } + + if (compressedBuffer) { + assert(compressedBytes < std::numeric_limits::max()); + Index32 bytes(static_cast(compressedBytes)); + os.write(reinterpret_cast(&bytes), sizeof(Index32)); + os.write(reinterpret_cast(compressedBuffer.get()), compressedBytes); + } + else { + os.write(reinterpret_cast(&zeroSize), sizeof(Index32)); + os.write(reinterpret_cast(mMask.data()), + mMask.size()*sizeof(MaskType)); + } + } + + // compressed size buffer + + if (mCompressedSize.empty()) { + // write out maximum Index32 value to denote no compressed sizes stored + os.write(reinterpret_cast(&maxSize), sizeof(Index32)); + } else { + size_t compressedBytes(0); + std::unique_ptr compressedBuffer; + if (compression::bloscCanCompress()) { + compressedBuffer = compression::bloscCompress( + reinterpret_cast(mCompressedSize.data()), + mCompressedSize.size()*sizeof(CompressedSizeType), compressedBytes, /*resize=*/false); + } + + if (compressedBuffer) { + assert(compressedBytes < std::numeric_limits::max()); + Index32 bytes(static_cast(compressedBytes)); + os.write(reinterpret_cast(&bytes), sizeof(Index32)); + os.write(reinterpret_cast(compressedBuffer.get()), compressedBytes); + } + else { + os.write(reinterpret_cast(&zeroSize), sizeof(Index32)); + os.write(reinterpret_cast(mCompressedSize.data()), + mCompressedSize.size()*sizeof(CompressedSizeType)); + } + } +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/DelayedLoadMetadata.h b/openvdb/io/DelayedLoadMetadata.h new file mode 100644 index 00000000..b80c666d --- /dev/null +++ b/openvdb/io/DelayedLoadMetadata.h @@ -0,0 +1,102 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_DELAYED_LOAD_METADATA_HAS_BEEN_INCLUDED +#define OPENVDB_DELAYED_LOAD_METADATA_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +/// @brief Store a buffer of data that can be optionally used +/// during reading for faster delayed-load I/O performance +class OPENVDB_API DelayedLoadMetadata: public Metadata +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + using MaskType = int8_t; + using CompressedSizeType = int64_t; + + DelayedLoadMetadata() = default; + DelayedLoadMetadata(const DelayedLoadMetadata& other); + ~DelayedLoadMetadata() override = default; + + Name typeName() const override; + Metadata::Ptr copy() const override; + void copy(const Metadata&) override; + std::string str() const override; + bool asBool() const override; + Index32 size() const override; + + static Name staticTypeName() { return "__delayedload"; } + + static Metadata::Ptr createMetadata() + { + Metadata::Ptr ret(new DelayedLoadMetadata); + return ret; + } + + static void registerType() + { + Metadata::registerType(DelayedLoadMetadata::staticTypeName(), + DelayedLoadMetadata::createMetadata); + } + + static void unregisterType() + { + Metadata::unregisterType(DelayedLoadMetadata::staticTypeName()); + } + + static bool isRegisteredType() + { + return Metadata::isRegisteredType(DelayedLoadMetadata::staticTypeName()); + } + + /// @brief Delete the contents of the mask and compressed size arrays + void clear(); + /// @brief Return @c true if both arrays are empty + bool empty() const; + + /// @brief Resize the mask array + void resizeMask(size_t size); + /// @brief Resize the compressed size array + void resizeCompressedSize(size_t size); + + /// @brief Return the mask value for a specific index + /// @note throws if index is out-of-range or DelayedLoadMask not registered + MaskType getMask(size_t index) const; + /// @brief Set the mask value for a specific index + /// @note throws if index is out-of-range + void setMask(size_t index, const MaskType& value); + + /// @brief Return the compressed size value for a specific index + /// @note throws if index is out-of-range or DelayedLoadMask not registered + CompressedSizeType getCompressedSize(size_t index) const; + /// @brief Set the compressed size value for a specific index + /// @note throws if index is out-of-range + void setCompressedSize(size_t index, const CompressedSizeType& value); + +protected: + void readValue(std::istream&, Index32 numBytes) override; + void writeValue(std::ostream&) const override; + +private: + std::vector mMask; + std::vector mCompressedSize; +}; // class DelayedLoadMetadata + + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_DELAYED_LOAD_METADATA_HAS_BEEN_INCLUDED diff --git a/openvdb/io/File.cc b/openvdb/io/File.cc new file mode 100644 index 00000000..44b7b115 --- /dev/null +++ b/openvdb/io/File.cc @@ -0,0 +1,833 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file io/File.cc + +#include "File.h" + +#include "TempFile.h" +#include +#include +#include +#include +#ifndef _MSC_VER +#include +#include +#include +#endif +#include +#include // for getenv(), strtoul() +#include // for strerror_r() +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +// Implementation details of the File class +struct File::Impl +{ + enum { DEFAULT_COPY_MAX_BYTES = 500000000 }; // 500 MB + + struct NoBBox {}; + + // Common implementation of the various File::readGrid() overloads, + // with and without bounding box clipping + template + static GridBase::Ptr readGrid(const File& file, const GridDescriptor& gd, const BoxType& bbox) + { + // This method should not be called for files that don't contain grid offsets. + assert(file.inputHasGridOffsets()); + + GridBase::Ptr grid = file.createGrid(gd); + gd.seekToGrid(file.inputStream()); + unarchive(file, grid, gd, bbox); + return grid; + } + + static void unarchive(const File& file, GridBase::Ptr& grid, + const GridDescriptor& gd, NoBBox) + { + file.Archive::readGrid(grid, gd, file.inputStream()); + } + + static void unarchive(const File& file, GridBase::Ptr& grid, + const GridDescriptor& gd, const CoordBBox& indexBBox) + { + file.Archive::readGrid(grid, gd, file.inputStream(), indexBBox); + } + + static void unarchive(const File& file, GridBase::Ptr& grid, + const GridDescriptor& gd, const BBoxd& worldBBox) + { + file.Archive::readGrid(grid, gd, file.inputStream(), worldBBox); + } + + static Index64 getDefaultCopyMaxBytes() + { + Index64 result = DEFAULT_COPY_MAX_BYTES; + if (const char* s = std::getenv("OPENVDB_DELAYED_LOAD_COPY_MAX_BYTES")) { + char* endptr = nullptr; + result = std::strtoul(s, &endptr, /*base=*/10); + } + return result; + } + + std::string mFilename; + // The file-level metadata + MetaMap::Ptr mMeta; + // The memory-mapped file + MappedFile::Ptr mFileMapping; + // The buffer for the input stream, if it is a memory-mapped file + SharedPtr mStreamBuf; + // The file stream that is open for reading + std::unique_ptr mInStream; + // File-level stream metadata (file format, compression, etc.) + StreamMetadata::Ptr mStreamMetadata; + // Flag indicating if we have read in the global information (header, + // metadata, and grid descriptors) for this VDB file + bool mIsOpen; + // File size limit for copying during delayed loading + Index64 mCopyMaxBytes; + // Grid descriptors for all grids stored in the file, indexed by grid name + NameMap mGridDescriptors; + // All grids, indexed by unique name (used only when mHasGridOffsets is false) + Archive::NamedGridMap mNamedGrids; + // All grids stored in the file (used only when mHasGridOffsets is false) + GridPtrVecPtr mGrids; +}; // class File::Impl + + +//////////////////////////////////////// + + +File::File(const std::string& filename): mImpl(new Impl) +{ + mImpl->mFilename = filename; + mImpl->mIsOpen = false; + mImpl->mCopyMaxBytes = Impl::getDefaultCopyMaxBytes(); + setInputHasGridOffsets(true); +} + + +File::~File() +{ +} + + +File::File(const File& other) + : Archive(other) + , mImpl(new Impl) +{ + *this = other; +} + + +File& +File::operator=(const File& other) +{ + if (&other != this) { + Archive::operator=(other); + const Impl& otherImpl = *other.mImpl; + mImpl->mFilename = otherImpl.mFilename; + mImpl->mMeta = otherImpl.mMeta; + mImpl->mIsOpen = false; // don't want two file objects reading from the same stream + mImpl->mCopyMaxBytes = otherImpl.mCopyMaxBytes; + mImpl->mGridDescriptors = otherImpl.mGridDescriptors; + mImpl->mNamedGrids = otherImpl.mNamedGrids; + mImpl->mGrids = otherImpl.mGrids; + } + return *this; +} + + +SharedPtr +File::copy() const +{ + return SharedPtr{new File{*this}}; +} + + +//////////////////////////////////////// + + +const std::string& +File::filename() const +{ + return mImpl->mFilename; +} + + +MetaMap::Ptr +File::fileMetadata() +{ + return mImpl->mMeta; +} + +MetaMap::ConstPtr +File::fileMetadata() const +{ + return mImpl->mMeta; +} + + +const File::NameMap& +File::gridDescriptors() const +{ + return mImpl->mGridDescriptors; +} + +File::NameMap& +File::gridDescriptors() +{ + return mImpl->mGridDescriptors; +} + + +std::istream& +File::inputStream() const +{ + if (!mImpl->mInStream) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + return *mImpl->mInStream; +} + + +//////////////////////////////////////// + + +Index64 +File::getSize() const +{ + /// @internal boost::filesystem::file_size() would be a more portable alternative, + /// but as of 9/2014, Houdini ships without the Boost.Filesystem library, + /// which makes it much less convenient to use that library. + + Index64 result = std::numeric_limits::max(); + + std::string mesg = "could not get size of file " + filename(); + +#ifdef _MSC_VER + // Get the file size by seeking to the end of the file. + std::ifstream fstrm(filename()); + if (fstrm) { + fstrm.seekg(0, fstrm.end); + result = static_cast(fstrm.tellg()); + } else { + OPENVDB_THROW(IoError, mesg); + } +#else + // Get the file size using the stat() system call. + struct stat info; + if (0 != ::stat(filename().c_str(), &info)) { + std::string s = getErrorString(); + if (!s.empty()) mesg += " (" + s + ")"; + OPENVDB_THROW(IoError, mesg); + } + if (!S_ISREG(info.st_mode)) { + mesg += " (not a regular file)"; + OPENVDB_THROW(IoError, mesg); + } + result = static_cast(info.st_size); +#endif + + return result; +} + + +Index64 +File::copyMaxBytes() const +{ + return mImpl->mCopyMaxBytes; +} + + +void +File::setCopyMaxBytes(Index64 bytes) +{ + mImpl->mCopyMaxBytes = bytes; +} + + +//////////////////////////////////////// + + +bool +File::isOpen() const +{ + return mImpl->mIsOpen; +} + + +bool +File::open(bool delayLoad, const MappedFile::Notifier& notifier) +{ + if (isOpen()) { + OPENVDB_THROW(IoError, filename() << " is already open"); + } + mImpl->mInStream.reset(); + + // Open the file. + std::unique_ptr newStream; + SharedPtr newStreamBuf; + MappedFile::Ptr newFileMapping; + if (!delayLoad || !Archive::isDelayedLoadingEnabled()) { + newStream.reset(new std::ifstream( + filename().c_str(), std::ios_base::in | std::ios_base::binary)); + } else { + bool isTempFile = false; + std::string fname = filename(); + if (getSize() < copyMaxBytes()) { + // If the file is not too large, make a temporary private copy of it + // and open the copy instead. The original file can then be modified + // or removed without affecting delayed load. + try { + TempFile tempFile; + std::ifstream fstrm(filename().c_str(), + std::ios_base::in | std::ios_base::binary); + boost::iostreams::copy(fstrm, tempFile); + fname = tempFile.filename(); + isTempFile = true; + } catch (std::exception& e) { + std::string mesg; + if (e.what()) mesg = std::string(" (") + e.what() + ")"; + OPENVDB_LOG_WARN("failed to create a temporary copy of " << filename() + << " for delayed loading" << mesg + << "; will read directly from " << filename() << " instead"); + } + } + + // While the file is open, its mapping, stream buffer and stream + // must all be maintained. Once the file is closed, the buffer and + // the stream can be discarded, but the mapping needs to persist + // if any grids were lazily loaded. + try { + newFileMapping.reset(new MappedFile(fname, /*autoDelete=*/isTempFile)); + newStreamBuf = newFileMapping->createBuffer(); + newStream.reset(new std::istream(newStreamBuf.get())); + } catch (std::exception& e) { + std::ostringstream ostr; + ostr << "could not open file " << filename(); + if (e.what() != nullptr) ostr << " (" << e.what() << ")"; + OPENVDB_THROW(IoError, ostr.str()); + } + } + + if (newStream->fail()) { + OPENVDB_THROW(IoError, "could not open file " << filename()); + } + + // Read in the file header. + bool newFile = false; + try { + newFile = Archive::readHeader(*newStream); + } catch (IoError& e) { + if (e.what() && std::string("not a VDB file") == e.what()) { + // Rethrow, adding the filename. + OPENVDB_THROW(IoError, filename() << " is not a VDB file"); + } + throw; + } + + mImpl->mFileMapping = newFileMapping; + if (mImpl->mFileMapping) mImpl->mFileMapping->setNotifier(notifier); + mImpl->mStreamBuf = newStreamBuf; + mImpl->mInStream.swap(newStream); + + // Tag the input stream with the file format and library version numbers + // and other metadata. + mImpl->mStreamMetadata.reset(new StreamMetadata); + mImpl->mStreamMetadata->setSeekable(true); + io::setStreamMetadataPtr(inputStream(), mImpl->mStreamMetadata, /*transfer=*/false); + Archive::setFormatVersion(inputStream()); + Archive::setLibraryVersion(inputStream()); + Archive::setDataCompression(inputStream()); + io::setMappedFilePtr(inputStream(), mImpl->mFileMapping); + + // Read in the VDB metadata. + mImpl->mMeta = MetaMap::Ptr(new MetaMap); + mImpl->mMeta->readMeta(inputStream()); + + if (!inputHasGridOffsets()) { + OPENVDB_LOG_DEBUG_RUNTIME("file " << filename() << " does not support partial reading"); + + mImpl->mGrids.reset(new GridPtrVec); + mImpl->mNamedGrids.clear(); + + // Stream in the entire contents of the file and append all grids to mGrids. + const int32_t gridCount = readGridCount(inputStream()); + for (int32_t i = 0; i < gridCount; ++i) { + GridDescriptor gd; + gd.read(inputStream()); + + GridBase::Ptr grid = createGrid(gd); + Archive::readGrid(grid, gd, inputStream()); + + gridDescriptors().insert(std::make_pair(gd.gridName(), gd)); + mImpl->mGrids->push_back(grid); + mImpl->mNamedGrids[gd.uniqueName()] = grid; + } + // Connect instances (grids that share trees with other grids). + for (NameMapCIter it = gridDescriptors().begin(); it != gridDescriptors().end(); ++it) { + Archive::connectInstance(it->second, mImpl->mNamedGrids); + } + } else { + // Read in just the grid descriptors. + readGridDescriptors(inputStream()); + } + + mImpl->mIsOpen = true; + return newFile; // true if file is not identical to opened file +} + + +void +File::close() +{ + // Reset all data. + mImpl->mMeta.reset(); + mImpl->mGridDescriptors.clear(); + mImpl->mGrids.reset(); + mImpl->mNamedGrids.clear(); + mImpl->mInStream.reset(); + mImpl->mStreamBuf.reset(); + mImpl->mStreamMetadata.reset(); + mImpl->mFileMapping.reset(); + + mImpl->mIsOpen = false; + setInputHasGridOffsets(true); +} + + +//////////////////////////////////////// + + +bool +File::hasGrid(const Name& name) const +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + return (findDescriptor(name) != gridDescriptors().end()); +} + + +MetaMap::Ptr +File::getMetadata() const +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + // Return a deep copy of the file-level metadata, which was read + // when the file was opened. + return MetaMap::Ptr(new MetaMap(*mImpl->mMeta)); +} + + +GridPtrVecPtr +File::getGrids() const +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + + GridPtrVecPtr ret; + if (!inputHasGridOffsets()) { + // If the input file doesn't have grid offsets, then all of the grids + // have already been streamed in and stored in mGrids. + ret = mImpl->mGrids; + } else { + ret.reset(new GridPtrVec); + + Archive::NamedGridMap namedGrids; + + // Read all grids represented by the GridDescriptors. + for (NameMapCIter i = gridDescriptors().begin(), e = gridDescriptors().end(); i != e; ++i) { + const GridDescriptor& gd = i->second; + GridBase::Ptr grid = readGrid(gd); + ret->push_back(grid); + namedGrids[gd.uniqueName()] = grid; + } + + // Connect instances (grids that share trees with other grids). + for (NameMapCIter i = gridDescriptors().begin(), e = gridDescriptors().end(); i != e; ++i) { + Archive::connectInstance(i->second, namedGrids); + } + } + return ret; +} + + +GridBase::Ptr +File::retrieveCachedGrid(const Name& name) const +{ + // If the file has grid offsets, grids are read on demand + // and not cached in mNamedGrids. + if (inputHasGridOffsets()) return GridBase::Ptr(); + + // If the file does not have grid offsets, mNamedGrids should already + // contain the entire contents of the file. + + // Search by unique name. + Archive::NamedGridMap::const_iterator it = + mImpl->mNamedGrids.find(GridDescriptor::stringAsUniqueName(name)); + // If not found, search by grid name. + if (it == mImpl->mNamedGrids.end()) it = mImpl->mNamedGrids.find(name); + if (it == mImpl->mNamedGrids.end()) { + OPENVDB_THROW(KeyError, filename() << " has no grid named \"" << name << "\""); + } + return it->second; +} + + +//////////////////////////////////////// + + +GridPtrVecPtr +File::readAllGridMetadata() +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + + GridPtrVecPtr ret(new GridPtrVec); + + if (!inputHasGridOffsets()) { + // If the input file doesn't have grid offsets, then all of the grids + // have already been streamed in and stored in mGrids. + for (size_t i = 0, N = mImpl->mGrids->size(); i < N; ++i) { + // Return copies of the grids, but with empty trees. + ret->push_back((*mImpl->mGrids)[i]->copyGridWithNewTree()); + } + } else { + // Read just the metadata and transforms for all grids. + for (NameMapCIter i = gridDescriptors().begin(), e = gridDescriptors().end(); i != e; ++i) { + const GridDescriptor& gd = i->second; + GridBase::ConstPtr grid = readGridPartial(gd, /*readTopology=*/false); + // Return copies of the grids, but with empty trees. + // (As of 0.98.0, at least, it would suffice to just const cast + // the grid pointers returned by readGridPartial(), but shallow + // copying the grids helps to ensure future compatibility.) + ret->push_back(grid->copyGridWithNewTree()); + } + } + return ret; +} + + +GridBase::Ptr +File::readGridMetadata(const Name& name) +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading."); + } + + GridBase::ConstPtr ret; + if (!inputHasGridOffsets()) { + // Retrieve the grid from mGrids, which should already contain + // the entire contents of the file. + ret = readGrid(name); + } else { + NameMapCIter it = findDescriptor(name); + if (it == gridDescriptors().end()) { + OPENVDB_THROW(KeyError, filename() << " has no grid named \"" << name << "\""); + } + + // Seek to and read in the grid from the file. + const GridDescriptor& gd = it->second; + ret = readGridPartial(gd, /*readTopology=*/false); + } + return ret->copyGridWithNewTree(); +} + + +//////////////////////////////////////// + + +GridBase::Ptr +File::readGrid(const Name& name) +{ + return readGridByName(name, BBoxd()); +} + + +GridBase::Ptr +File::readGrid(const Name& name, const BBoxd& bbox) +{ + return readGridByName(name, bbox); +} + + +GridBase::Ptr +File::readGridByName(const Name& name, const BBoxd& bbox) +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading."); + } + + const bool clip = bbox.isSorted(); + + // If a grid with the given name was already read and cached + // (along with the entire contents of the file, because the file + // doesn't support random access), retrieve and return it. + GridBase::Ptr grid = retrieveCachedGrid(name); + if (grid) { + if (clip) { + grid = grid->deepCopyGrid(); + grid->clipGrid(bbox); + } + return grid; + } + + NameMapCIter it = findDescriptor(name); + if (it == gridDescriptors().end()) { + OPENVDB_THROW(KeyError, filename() << " has no grid named \"" << name << "\""); + } + + // Seek to and read in the grid from the file. + const GridDescriptor& gd = it->second; + grid = (clip ? readGrid(gd, bbox) : readGrid(gd)); + + if (gd.isInstance()) { + /// @todo Refactor to share code with Archive::connectInstance()? + NameMapCIter parentIt = + findDescriptor(GridDescriptor::nameAsString(gd.instanceParentName())); + if (parentIt == gridDescriptors().end()) { + OPENVDB_THROW(KeyError, "missing instance parent \"" + << GridDescriptor::nameAsString(gd.instanceParentName()) + << "\" for grid " << GridDescriptor::nameAsString(gd.uniqueName()) + << " in file " << filename()); + } + + GridBase::Ptr parent; + if (clip) { + const CoordBBox indexBBox = grid->constTransform().worldToIndexNodeCentered(bbox); + parent = readGrid(parentIt->second, indexBBox); + } else { + parent = readGrid(parentIt->second); + } + if (parent) grid->setTree(parent->baseTreePtr()); + } + return grid; +} + + +//////////////////////////////////////// + + +void +File::writeGrids(const GridCPtrVec& grids, const MetaMap& meta) const +{ + if (isOpen()) { + OPENVDB_THROW(IoError, + filename() << " cannot be written because it is open for reading"); + } + + // Create a file stream and write it out. + std::ofstream file; + file.open(filename().c_str(), + std::ios_base::out | std::ios_base::binary | std::ios_base::trunc); + + if (file.fail()) { + OPENVDB_THROW(IoError, "could not open " << filename() << " for writing"); + } + + // Write out the vdb. + Archive::write(file, grids, /*seekable=*/true, meta); + + file.close(); +} + + +//////////////////////////////////////// + + +void +File::readGridDescriptors(std::istream& is) +{ + // This method should not be called for files that don't contain grid offsets. + assert(inputHasGridOffsets()); + + gridDescriptors().clear(); + + for (int32_t i = 0, N = readGridCount(is); i < N; ++i) { + // Read the grid descriptor. + GridDescriptor gd; + gd.read(is); + + // Add the descriptor to the dictionary. + gridDescriptors().insert(std::make_pair(gd.gridName(), gd)); + + // Skip forward to the next descriptor. + gd.seekToEnd(is); + } +} + + +//////////////////////////////////////// + + +File::NameMapCIter +File::findDescriptor(const Name& name) const +{ + const Name uniqueName = GridDescriptor::stringAsUniqueName(name); + + // Find all descriptors with the given grid name. + std::pair range = gridDescriptors().equal_range(name); + + if (range.first == range.second) { + // If no descriptors were found with the given grid name, the name might have + // a suffix ("name[N]"). In that case, remove the "[N]" suffix and search again. + range = gridDescriptors().equal_range(GridDescriptor::stripSuffix(uniqueName)); + } + + const size_t count = size_t(std::distance(range.first, range.second)); + if (count > 1 && name == uniqueName) { + OPENVDB_LOG_WARN(filename() << " has more than one grid named \"" << name << "\""); + } + + NameMapCIter ret = gridDescriptors().end(); + + if (count > 0) { + if (name == uniqueName) { + // If the given grid name is unique or if no "[N]" index was given, + // use the first matching descriptor. + ret = range.first; + } else { + // If the given grid name has a "[N]" index, find the descriptor + // with a matching unique name. + for (NameMapCIter it = range.first; it != range.second; ++it) { + const Name candidateName = it->second.uniqueName(); + if (candidateName == uniqueName || candidateName == name) { + ret = it; + break; + } + } + } + } + return ret; +} + + +//////////////////////////////////////// + + +GridBase::Ptr +File::createGrid(const GridDescriptor& gd) const +{ + // Create the grid. + if (!GridBase::isRegistered(gd.gridType())) { + OPENVDB_THROW(KeyError, "Cannot read grid " + << GridDescriptor::nameAsString(gd.uniqueName()) + << " from " << filename() << ": grid type " + << gd.gridType() << " is not registered"); + } + + GridBase::Ptr grid = GridBase::createGrid(gd.gridType()); + if (grid) grid->setSaveFloatAsHalf(gd.saveFloatAsHalf()); + + return grid; +} + + +GridBase::ConstPtr +File::readGridPartial(const GridDescriptor& gd, bool readTopology) const +{ + // This method should not be called for files that don't contain grid offsets. + assert(inputHasGridOffsets()); + + GridBase::Ptr grid = createGrid(gd); + + // Seek to grid. + gd.seekToGrid(inputStream()); + + // Read the grid partially. + readGridPartial(grid, inputStream(), gd.isInstance(), readTopology); + + // Promote to a const grid. + GridBase::ConstPtr constGrid = grid; + + return constGrid; +} + + +GridBase::Ptr +File::readGrid(const GridDescriptor& gd) const +{ + return Impl::readGrid(*this, gd, Impl::NoBBox()); +} + + +GridBase::Ptr +File::readGrid(const GridDescriptor& gd, const BBoxd& bbox) const +{ + return Impl::readGrid(*this, gd, bbox); +} + + +GridBase::Ptr +File::readGrid(const GridDescriptor& gd, const CoordBBox& bbox) const +{ + return Impl::readGrid(*this, gd, bbox); +} + + +void +File::readGridPartial(GridBase::Ptr grid, std::istream& is, + bool isInstance, bool readTopology) const +{ + // This method should not be called for files that don't contain grid offsets. + assert(inputHasGridOffsets()); + + // This code needs to stay in sync with io::Archive::readGrid(), in terms of + // the order of operations. + readGridCompression(is); + grid->readMeta(is); + + // drop DelayedLoadMetadata from the grid as it is only useful for IO + if ((*grid)[GridBase::META_FILE_DELAYED_LOAD]) { + grid->removeMeta(GridBase::META_FILE_DELAYED_LOAD); + } + + if (getFormatVersion(is) >= OPENVDB_FILE_VERSION_GRID_INSTANCING) { + grid->readTransform(is); + if (!isInstance && readTopology) { + grid->readTopology(is); + } + } else { + if (readTopology) { + grid->readTopology(is); + grid->readTransform(is); + } + } +} + + +//////////////////////////////////////// + + +File::NameIterator +File::beginName() const +{ + if (!isOpen()) { + OPENVDB_THROW(IoError, filename() << " is not open for reading"); + } + return File::NameIterator(gridDescriptors().begin()); +} + + +File::NameIterator +File::endName() const +{ + return File::NameIterator(gridDescriptors().end()); +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/File.h b/openvdb/io/File.h new file mode 100644 index 00000000..27b2abb7 --- /dev/null +++ b/openvdb/io/File.h @@ -0,0 +1,236 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file File.h + +#ifndef OPENVDB_IO_FILE_HAS_BEEN_INCLUDED +#define OPENVDB_IO_FILE_HAS_BEEN_INCLUDED + +#include +#include "io.h" // for MappedFile::Notifier +#include "Archive.h" +#include "GridDescriptor.h" +#include // for std::copy() +#include +#include // for std::back_inserter() +#include +#include +#include + + +class TestFile; +class TestStream; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +/// Grid archive associated with a file on disk +class OPENVDB_API File: public Archive +{ +public: + using NameMap = std::multimap; + using NameMapCIter = NameMap::const_iterator; + + explicit File(const std::string& filename); + ~File() override; + + /// @brief Copy constructor + /// @details The copy will be closed and will not reference the same + /// file descriptor as the original. + File(const File& other); + /// @brief Assignment + /// @details After assignment, this File will be closed and will not + /// reference the same file descriptor as the source File. + File& operator=(const File& other); + + /// @brief Return a copy of this archive. + /// @details The copy will be closed and will not reference the same + /// file descriptor as the original. + SharedPtr copy() const override; + + /// @brief Return the name of the file with which this archive is associated. + /// @details The file does not necessarily exist on disk yet. + const std::string& filename() const; + + /// @brief Open the file, read the file header and the file-level metadata, + /// and populate the grid descriptors, but do not load any grids into memory. + /// @details If @a delayLoad is true, map the file into memory and enable delayed loading + /// of grids, and if a notifier is provided, call it when the file gets unmapped. + /// @note Define the environment variable @c OPENVDB_DISABLE_DELAYED_LOAD to disable + /// delayed loading unconditionally. + /// @throw IoError if the file is not a valid VDB file. + /// @return @c true if the file's UUID has changed since it was last read. + /// @see setCopyMaxBytes + bool open(bool delayLoad = true, const MappedFile::Notifier& = MappedFile::Notifier()); + + /// Return @c true if the file has been opened for reading. + bool isOpen() const; + + /// Close the file once we are done reading from it. + void close(); + + /// @brief Return this file's current size on disk in bytes. + /// @throw IoError if the file size cannot be determined. + Index64 getSize() const; + + /// @brief Return the size in bytes above which this file will not be + /// automatically copied during delayed loading. + Index64 copyMaxBytes() const; + /// @brief If this file is opened with delayed loading enabled, make a private copy + /// of the file if its size in bytes is less than the specified value. + /// @details Making a private copy ensures that the file can't change on disk + /// before it has been fully read. + /// @warning If the file is larger than this size, it is the user's responsibility + /// to ensure that it does not change on disk before it has been fully read. + /// Undefined behavior and/or a crash might result otherwise. + /// @note Copying is enabled by default, but it can be disabled for individual files + /// by setting the maximum size to zero bytes. A default size limit can be specified + /// by setting the environment variable @c OPENVDB_DELAYED_LOAD_COPY_MAX_BYTES + /// to the desired number of bytes. + void setCopyMaxBytes(Index64 bytes); + + /// Return @c true if a grid of the given name exists in this file. + bool hasGrid(const Name&) const; + + /// Return (in a newly created MetaMap) the file-level metadata. + MetaMap::Ptr getMetadata() const; + + /// Read the entire contents of the file and return a list of grid pointers. + GridPtrVecPtr getGrids() const; + + /// @brief Read just the grid metadata and transforms from the file and return a list + /// of pointers to grids that are empty except for their metadata and transforms. + /// @throw IoError if this file is not open for reading. + GridPtrVecPtr readAllGridMetadata(); + + /// @brief Read a grid's metadata and transform only. + /// @return A pointer to a grid that is empty except for its metadata and transform. + /// @throw IoError if this file is not open for reading. + /// @throw KeyError if no grid with the given name exists in this file. + GridBase::Ptr readGridMetadata(const Name&); + + /// Read an entire grid, including all of its data blocks. + GridBase::Ptr readGrid(const Name&); + /// @brief Read a grid, including its data blocks, but only where it + /// intersects the given world-space bounding box. + GridBase::Ptr readGrid(const Name&, const BBoxd&); + + /// @todo GridPtrVec readAllGrids(const Name&) + + /// @brief Write the grids in the given container to the file whose name + /// was given in the constructor. + void write(const GridCPtrVec&, const MetaMap& = MetaMap()) const override; + + /// @brief Write the grids in the given container to the file whose name + /// was given in the constructor. + template + void write(const GridPtrContainerT&, const MetaMap& = MetaMap()) const; + + /// A const iterator that iterates over all names in the file. This is only + /// valid once the file has been opened. + class NameIterator + { + public: + NameIterator(const NameMapCIter& iter): mIter(iter) {} + NameIterator(const NameIterator&) = default; + ~NameIterator() {} + + NameIterator& operator++() { mIter++; return *this; } + + bool operator==(const NameIterator& iter) const { return mIter == iter.mIter; } + bool operator!=(const NameIterator& iter) const { return mIter != iter.mIter; } + + Name operator*() const { return this->gridName(); } + + Name gridName() const { return GridDescriptor::nameAsString(mIter->second.uniqueName()); } + + private: + NameMapCIter mIter; + }; + + /// @return a NameIterator to iterate over all grid names in the file. + NameIterator beginName() const; + + /// @return the ending iterator for all grid names in the file. + NameIterator endName() const; + +private: + /// Read in all grid descriptors that are stored in the given stream. + void readGridDescriptors(std::istream&); + + /// @brief Return an iterator to the descriptor for the grid with the given name. + /// If the name is non-unique, return an iterator to the first matching descriptor. + NameMapCIter findDescriptor(const Name&) const; + + /// Return a newly created, empty grid of the type specified by the given grid descriptor. + GridBase::Ptr createGrid(const GridDescriptor&) const; + + /// @brief Read a grid, including its data blocks, but only where it + /// intersects the given world-space bounding box. + GridBase::Ptr readGridByName(const Name&, const BBoxd&); + + /// Read in and return the partially-populated grid specified by the given grid descriptor. + GridBase::ConstPtr readGridPartial(const GridDescriptor&, bool readTopology) const; + + /// Read in and return the grid specified by the given grid descriptor. + GridBase::Ptr readGrid(const GridDescriptor&) const; + /// Read in and return the region of the grid specified by the given grid descriptor + /// that intersects the given world-space bounding box. + GridBase::Ptr readGrid(const GridDescriptor&, const BBoxd&) const; + /// Read in and return the region of the grid specified by the given grid descriptor + /// that intersects the given index-space bounding box. + GridBase::Ptr readGrid(const GridDescriptor&, const CoordBBox&) const; + + /// @brief Partially populate the given grid by reading its metadata and transform and, + /// if the grid is not an instance, its tree structure, but not the tree's leaf nodes. + void readGridPartial(GridBase::Ptr, std::istream&, bool isInstance, bool readTopology) const; + + /// @brief Retrieve a grid from @c mNamedGrids. Return a null pointer + /// if @c mNamedGrids was not populated (because this file is random-access). + /// @throw KeyError if no grid with the given name exists in this file. + GridBase::Ptr retrieveCachedGrid(const Name&) const; + + void writeGrids(const GridCPtrVec&, const MetaMap&) const; + + MetaMap::Ptr fileMetadata(); + MetaMap::ConstPtr fileMetadata() const; + + const NameMap& gridDescriptors() const; + NameMap& gridDescriptors(); + + std::istream& inputStream() const; + + friend class ::TestFile; + friend class ::TestStream; + + struct Impl; + std::unique_ptr mImpl; +}; + + +//////////////////////////////////////// + + +inline void +File::write(const GridCPtrVec& grids, const MetaMap& meta) const +{ + this->writeGrids(grids, meta); +} + + +template +inline void +File::write(const GridPtrContainerT& container, const MetaMap& meta) const +{ + GridCPtrVec grids; + std::copy(container.begin(), container.end(), std::back_inserter(grids)); + this->writeGrids(grids, meta); +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_FILE_HAS_BEEN_INCLUDED diff --git a/openvdb/io/GridDescriptor.cc b/openvdb/io/GridDescriptor.cc new file mode 100644 index 00000000..c4bd08a5 --- /dev/null +++ b/openvdb/io/GridDescriptor.cc @@ -0,0 +1,196 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "GridDescriptor.h" + +#include +#include // for boost::ends_with() +#include // for boost::erase_last() +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +namespace { + +// In order not to break backward compatibility with existing VDB files, +// grids stored using 16-bit half floats are flagged by adding the following +// suffix to the grid's type name on output. The suffix is removed on input +// and the grid's "save float as half" flag set accordingly. +const char* HALF_FLOAT_TYPENAME_SUFFIX = "_HalfFloat"; + +const char* SEP = "\x1e"; // ASCII "record separator" + +} + + +GridDescriptor::GridDescriptor(): + mSaveFloatAsHalf(false), + mGridPos(0), + mBlockPos(0), + mEndPos(0) +{ +} + +GridDescriptor::GridDescriptor(const Name &name, const Name &type, bool half): + mGridName(stripSuffix(name)), + mUniqueName(name), + mGridType(type), + mSaveFloatAsHalf(half), + mGridPos(0), + mBlockPos(0), + mEndPos(0) +{ +} + +GridDescriptor::~GridDescriptor() +{ +} + +void +GridDescriptor::writeHeader(std::ostream &os) const +{ + writeString(os, mUniqueName); + + Name gridType = mGridType; + if (mSaveFloatAsHalf) gridType += HALF_FLOAT_TYPENAME_SUFFIX; + writeString(os, gridType); + + writeString(os, mInstanceParentName); +} + +void +GridDescriptor::writeStreamPos(std::ostream &os) const +{ + os.write(reinterpret_cast(&mGridPos), sizeof(boost::int64_t)); + os.write(reinterpret_cast(&mBlockPos), sizeof(boost::int64_t)); + os.write(reinterpret_cast(&mEndPos), sizeof(boost::int64_t)); +} + +GridBase::Ptr +GridDescriptor::read(std::istream &is) +{ + // Read in the name. + mUniqueName = readString(is); + mGridName = stripSuffix(mUniqueName); + + // Read in the grid type. + mGridType = readString(is); + if (boost::ends_with(mGridType, HALF_FLOAT_TYPENAME_SUFFIX)) { + mSaveFloatAsHalf = true; + boost::erase_last(mGridType, HALF_FLOAT_TYPENAME_SUFFIX); + } + + if (getFormatVersion(is) >= OPENVDB_FILE_VERSION_GRID_INSTANCING) { + mInstanceParentName = readString(is); + } + + // Create the grid of the type if it has been registered. + if (!GridBase::isRegistered(mGridType)) { + OPENVDB_THROW(LookupError, "Cannot read grid." << + " Grid type " << mGridType << " is not registered."); + } + // else + GridBase::Ptr grid = GridBase::createGrid(mGridType); + if (grid) grid->setSaveFloatAsHalf(mSaveFloatAsHalf); + + // Read in the offsets. + is.read(reinterpret_cast(&mGridPos), sizeof(boost::int64_t)); + is.read(reinterpret_cast(&mBlockPos), sizeof(boost::int64_t)); + is.read(reinterpret_cast(&mEndPos), sizeof(boost::int64_t)); + + return grid; +} + +void +GridDescriptor::seekToGrid(std::istream &is) const +{ + is.seekg(mGridPos, std::ios_base::beg); +} + +void +GridDescriptor::seekToBlocks(std::istream &is) const +{ + is.seekg(mBlockPos, std::ios_base::beg); +} + +void +GridDescriptor::seekToEnd(std::istream &is) const +{ + is.seekg(mEndPos, std::ios_base::beg); +} + + +void +GridDescriptor::seekToGrid(std::ostream &os) const +{ + os.seekp(mGridPos, std::ios_base::beg); +} + +void +GridDescriptor::seekToBlocks(std::ostream &os) const +{ + os.seekp(mBlockPos, std::ios_base::beg); +} + +void +GridDescriptor::seekToEnd(std::ostream &os) const +{ + os.seekp(mEndPos, std::ios_base::beg); +} + + +//////////////////////////////////////// + + +// static +Name +GridDescriptor::addSuffix(const Name& name, int n) +{ + std::ostringstream ostr; + ostr << name << SEP << n; + return ostr.str(); +} + + +// static +Name +GridDescriptor::stripSuffix(const Name& name) +{ + return name.substr(0, name.find(SEP)); +} + + +// static +std::string +GridDescriptor::nameAsString(const Name& name) +{ + std::string::size_type pos = name.find(SEP); + if (pos == std::string::npos) return name; + + return name.substr(0, pos) + "[" + name.substr(pos + 1) + "]"; +} + + +//static +Name +GridDescriptor::stringAsUniqueName(const std::string& s) +{ + Name ret = s; + if (!ret.empty() && *ret.rbegin() == ']') { // found trailing ']' + std::string::size_type pos = ret.find("["); + // Replace "[N]" with SEP "N". + if (pos != std::string::npos) { + ret.resize(ret.size() - 1); // drop trailing ']' + ret.replace(ret.find("["), 1, SEP); + } + } + return ret; +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/GridDescriptor.h b/openvdb/io/GridDescriptor.h new file mode 100644 index 00000000..93cd6285 --- /dev/null +++ b/openvdb/io/GridDescriptor.h @@ -0,0 +1,105 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_IO_GRIDDESCRIPTOR_HAS_BEEN_INCLUDED +#define OPENVDB_IO_GRIDDESCRIPTOR_HAS_BEEN_INCLUDED + +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +/// This structure stores useful information that describes a grid on disk. +/// It can be used to retrieve I/O information about the grid such as +/// offsets into the file where the grid is located, its type, etc. +class OPENVDB_API GridDescriptor +{ +public: + GridDescriptor(); + GridDescriptor(const Name& name, const Name& gridType, bool saveFloatAsHalf = false); + GridDescriptor(const GridDescriptor&) = default; + GridDescriptor& operator=(const GridDescriptor&) = default; + ~GridDescriptor(); + + const Name& gridType() const { return mGridType; } + const Name& gridName() const { return mGridName; } + const Name& uniqueName() const { return mUniqueName; } + + const Name& instanceParentName() const { return mInstanceParentName; } + void setInstanceParentName(const Name& name) { mInstanceParentName = name; } + bool isInstance() const { return !mInstanceParentName.empty(); } + + bool saveFloatAsHalf() const { return mSaveFloatAsHalf; } + + void setGridPos(int64_t pos) { mGridPos = pos; } + int64_t getGridPos() const { return mGridPos; } + + void setBlockPos(int64_t pos) { mBlockPos = pos; } + int64_t getBlockPos() const { return mBlockPos; } + + void setEndPos(int64_t pos) { mEndPos = pos; } + int64_t getEndPos() const { return mEndPos; } + + // These methods seek to the right position in the given stream. + void seekToGrid(std::istream&) const; + void seekToBlocks(std::istream&) const; + void seekToEnd(std::istream&) const; + + void seekToGrid(std::ostream&) const; + void seekToBlocks(std::ostream&) const; + void seekToEnd(std::ostream&) const; + + /// @brief Write out this descriptor's header information (all data except for + /// stream offsets). + void writeHeader(std::ostream&) const; + + /// @brief Since positions into the stream are known at a later time, they are + /// written out separately. + void writeStreamPos(std::ostream&) const; + + /// @brief Read a grid descriptor from the given stream. + /// @return an empty grid of the type specified by the grid descriptor. + GridBase::Ptr read(std::istream&); + + /// @brief Append the number @a n to the given name (separated by an ASCII + /// "record separator" character) and return the resulting name. + static Name addSuffix(const Name&, int n); + /// @brief Strip from the given name any suffix that is separated by an ASCII + /// "record separator" character and return the resulting name. + static Name stripSuffix(const Name&); + /// @brief Given a name with suffix N, return "name[N]", otherwise just return "name". + /// Use this to produce a human-readable string from a descriptor's unique name. + static std::string nameAsString(const Name&); + /// @brief Given a string of the form "name[N]", return "name" with the suffix N + /// separated by an ASCII "record separator" character). Otherwise just return + /// the string as is. + static Name stringAsUniqueName(const std::string&); + +private: + /// Name of the grid + Name mGridName; + /// Unique name for this descriptor + Name mUniqueName; + /// If nonempty, the name of another grid that shares this grid's tree + Name mInstanceParentName; + /// The type of the grid + Name mGridType; + /// Are floats quantized to 16 bits on disk? + bool mSaveFloatAsHalf; + /// Location in the stream where the grid data is stored + int64_t mGridPos; + /// Location in the stream where the grid blocks are stored + int64_t mBlockPos; + /// Location in the stream where the next grid descriptor begins + int64_t mEndPos; +}; + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_GRIDDESCRIPTOR_HAS_BEEN_INCLUDED diff --git a/openvdb/io/Queue.cc b/openvdb/io/Queue.cc new file mode 100644 index 00000000..706fbf3e --- /dev/null +++ b/openvdb/io/Queue.cc @@ -0,0 +1,313 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Queue.cc +/// @author Peter Cucka + +#include "Queue.h" + +#include "File.h" +#include "Stream.h" +#include +#include +#include +#include +#include +#include +#include // for tbb::this_tbb_thread::sleep() +#include +#include // for std::max() +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +namespace { + +using Mutex = tbb::mutex; +using Lock = Mutex::scoped_lock; + + +// Abstract base class for queuable TBB tasks that adds a task completion callback +class Task: public tbb::task +{ +public: + Task(Queue::Id id): mId(id) {} + ~Task() override {} + + Queue::Id id() const { return mId; } + + void setNotifier(Queue::Notifier& notifier) { mNotify = notifier; } + +protected: + void notify(Queue::Status status) { if (mNotify) mNotify(this->id(), status); } + +private: + Queue::Id mId; + Queue::Notifier mNotify; +}; + + +// Queuable TBB task that writes one or more grids to a .vdb file or an output stream +class OutputTask: public Task +{ +public: + OutputTask(Queue::Id id, const GridCPtrVec& grids, const Archive& archive, + const MetaMap& metadata) + : Task(id) + , mGrids(grids) + , mArchive(archive.copy()) + , mMetadata(metadata) + {} + + tbb::task* execute() override + { + Queue::Status status = Queue::FAILED; + try { + mArchive->write(mGrids, mMetadata); + status = Queue::SUCCEEDED; + } catch (std::exception& e) { + if (const char* msg = e.what()) { + OPENVDB_LOG_ERROR(msg); + } + } catch (...) { + } + this->notify(status); + return nullptr; // no successor to this task + } + +private: + GridCPtrVec mGrids; + SharedPtr mArchive; + MetaMap mMetadata; +}; + +} // unnamed namespace + + +//////////////////////////////////////// + + +// Private implementation details of a Queue +struct Queue::Impl +{ + using NotifierMap = std::map; + /// @todo Provide more information than just "succeeded" or "failed"? + using StatusMap = tbb::concurrent_hash_map; + + + Impl() + : mTimeout(Queue::DEFAULT_TIMEOUT) + , mCapacity(Queue::DEFAULT_CAPACITY) + , mNextId(1) + , mNextNotifierId(1) + { + mNumTasks = 0; // note: must explicitly zero-initialize atomics + } + ~Impl() {} + + // Disallow copying of instances of this class. + Impl(const Impl&); + Impl& operator=(const Impl&); + + // This method might be called from multiple threads. + void setStatus(Queue::Id id, Queue::Status status) + { + StatusMap::accessor acc; + mStatus.insert(acc, id); + acc->second = status; + } + + // This method might be called from multiple threads. + void setStatusWithNotification(Queue::Id id, Queue::Status status) + { + const bool completed = (status == SUCCEEDED || status == FAILED); + + // Update the task's entry in the status map with the new status. + this->setStatus(id, status); + + // If the client registered any callbacks, call them now. + bool didNotify = false; + { + // tbb::concurrent_hash_map does not support concurrent iteration + // (i.e., iteration concurrent with insertion or deletion), + // so we use a mutex-protected STL map instead. But if a callback + // invokes a notifier method such as removeNotifier() on this queue, + // the result will be a deadlock. + /// @todo Is it worth trying to avoid such deadlocks? + Lock lock(mNotifierMutex); + if (!mNotifiers.empty()) { + didNotify = true; + for (NotifierMap::const_iterator it = mNotifiers.begin(); + it != mNotifiers.end(); ++it) + { + it->second(id, status); + } + } + } + // If the task completed and callbacks were called, remove + // the task's entry from the status map. + if (completed) { + if (didNotify) { + StatusMap::accessor acc; + if (mStatus.find(acc, id)) { + mStatus.erase(acc); + } + } + --mNumTasks; + } + } + + bool canEnqueue() const { return mNumTasks < Int64(mCapacity); } + + void enqueue(Task& task) + { + tbb::tick_count start = tbb::tick_count::now(); + while (!canEnqueue()) { + tbb::this_tbb_thread::sleep(tbb::tick_count::interval_t(0.5/*sec*/)); + if ((tbb::tick_count::now() - start).seconds() > double(mTimeout)) { + OPENVDB_THROW(RuntimeError, + "unable to queue I/O task; " << mTimeout << "-second time limit expired"); + } + } + Queue::Notifier notify = std::bind(&Impl::setStatusWithNotification, this, + std::placeholders::_1, std::placeholders::_2); + task.setNotifier(notify); + this->setStatus(task.id(), Queue::PENDING); + tbb::task::enqueue(task); + ++mNumTasks; + } + + Index32 mTimeout; + Index32 mCapacity; + tbb::atomic mNumTasks; + Index32 mNextId; + StatusMap mStatus; + NotifierMap mNotifiers; + Index32 mNextNotifierId; + Mutex mNotifierMutex; +}; + + +//////////////////////////////////////// + + +Queue::Queue(Index32 capacity): mImpl(new Impl) +{ + mImpl->mCapacity = capacity; +} + + +Queue::~Queue() +{ + // Wait for all queued tasks to complete (successfully or unsuccessfully). + /// @todo Allow the queue to be destroyed while there are uncompleted tasks + /// (e.g., by keeping a static registry of queues that also dispatches + /// or blocks notifications)? + while (mImpl->mNumTasks > 0) { + tbb::this_tbb_thread::sleep(tbb::tick_count::interval_t(0.5/*sec*/)); + } +} + + +//////////////////////////////////////// + + +bool Queue::empty() const { return (mImpl->mNumTasks == 0); } +Index32 Queue::size() const { return Index32(std::max(0, mImpl->mNumTasks)); } +Index32 Queue::capacity() const { return mImpl->mCapacity; } +void Queue::setCapacity(Index32 n) { mImpl->mCapacity = std::max(1, n); } + +/// @todo void Queue::setCapacity(Index64 bytes); + +/// @todo Provide a way to limit the number of tasks in flight +/// (e.g., by enqueueing tbb::tasks that pop Tasks off a concurrent_queue)? + +/// @todo Remove any tasks from the queue that are not currently executing. +//void clear() const; + +Index32 Queue::timeout() const { return mImpl->mTimeout; } +void Queue::setTimeout(Index32 sec) { mImpl->mTimeout = sec; } + + +//////////////////////////////////////// + + +Queue::Status +Queue::status(Id id) const +{ + Impl::StatusMap::const_accessor acc; + if (mImpl->mStatus.find(acc, id)) { + const Status status = acc->second; + if (status == SUCCEEDED || status == FAILED) { + mImpl->mStatus.erase(acc); + } + return status; + } + return UNKNOWN; +} + + +Queue::Id +Queue::addNotifier(Notifier notify) +{ + Lock lock(mImpl->mNotifierMutex); + Queue::Id id = mImpl->mNextNotifierId++; + mImpl->mNotifiers[id] = notify; + return id; +} + + +void +Queue::removeNotifier(Id id) +{ + Lock lock(mImpl->mNotifierMutex); + Impl::NotifierMap::iterator it = mImpl->mNotifiers.find(id); + if (it != mImpl->mNotifiers.end()) { + mImpl->mNotifiers.erase(it); + } +} + + +void +Queue::clearNotifiers() +{ + Lock lock(mImpl->mNotifierMutex); + mImpl->mNotifiers.clear(); +} + + +//////////////////////////////////////// + + +Queue::Id +Queue::writeGrid(GridBase::ConstPtr grid, const Archive& archive, const MetaMap& metadata) +{ + return writeGridVec(GridCPtrVec(1, grid), archive, metadata); +} + + +Queue::Id +Queue::writeGridVec(const GridCPtrVec& grids, const Archive& archive, const MetaMap& metadata) +{ + const Queue::Id taskId = mImpl->mNextId++; + // From the "GUI Thread" chapter in the TBB Design Patterns guide + OutputTask* task = + new(tbb::task::allocate_root()) OutputTask(taskId, grids, archive, metadata); + try { + mImpl->enqueue(*task); + } catch (openvdb::RuntimeError&) { + // Destroy the task if it could not be enqueued, then rethrow the exception. + tbb::task::destroy(*task); + throw; + } + return taskId; +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/Queue.h b/openvdb/io/Queue.h new file mode 100644 index 00000000..30257348 --- /dev/null +++ b/openvdb/io/Queue.h @@ -0,0 +1,247 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Queue.h +/// @author Peter Cucka + +#ifndef OPENVDB_IO_QUEUE_HAS_BEEN_INCLUDED +#define OPENVDB_IO_QUEUE_HAS_BEEN_INCLUDED + +#include +#include +#include // for std::copy +#include +#include // for std::back_inserter +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +class Archive; + +/// @brief Queue for asynchronous output of grids to files or streams +/// +/// @warning The queue holds shared pointers to grids. It is not safe +/// to modify a grid that has been placed in the queue. Instead, +/// make a deep copy of the grid (Grid::deepCopy()). +/// +/// @par Example: +/// @code +/// #include +/// #include +/// #include +/// #include +/// +/// using openvdb::io::Queue; +/// +/// struct MyNotifier +/// { +/// // Use a concurrent container, because queue callback functions +/// // must be thread-safe. +/// using FilenameMap = tbb::concurrent_hash_map; +/// FilenameMap filenames; +/// +/// // Callback function that prints the status of a completed task. +/// void callback(Queue::Id id, Queue::Status status) +/// { +/// const bool ok = (status == Queue::SUCCEEDED); +/// FilenameMap::accessor acc; +/// if (filenames.find(acc, id)) { +/// std::cout << (ok ? "wrote " : "failed to write ") +/// << acc->second << std::endl; +/// filenames.erase(acc); +/// } +/// } +/// }; +/// +/// int main() +/// { +/// // Construct an object to receive notifications from the queue. +/// // The object's lifetime must exceed the queue's. +/// MyNotifier notifier; +/// +/// Queue queue; +/// +/// // Register the callback() method of the MyNotifier object +/// // to receive notifications of completed tasks. +/// queue.addNotifier(std::bind(&MyNotifier::callback, ¬ifier, +/// std::placeholders::_1, std::placeholders::_2)); +/// +/// // Queue grids for output (e.g., for each step of a simulation). +/// for (int step = 1; step <= 10; ++step) { +/// openvdb::FloatGrid::Ptr grid = ...; +/// +/// std::ostringstream os; +/// os << "mygrid." << step << ".vdb"; +/// const std::string filename = os.str(); +/// +/// Queue::Id id = queue.writeGrid(grid, openvdb::io::File(filename)); +/// +/// // Associate the filename with the ID of the queued task. +/// MyNotifier::FilenameMap::accessor acc; +/// notifier.filenames.insert(acc, id); +/// acc->second = filename; +/// } +/// } +/// @endcode +/// Output: +/// @code +/// wrote mygrid.1.vdb +/// wrote mygrid.2.vdb +/// wrote mygrid.4.vdb +/// wrote mygrid.3.vdb +/// ... +/// wrote mygrid.10.vdb +/// @endcode +/// Note that tasks do not necessarily complete in the order in which they were queued. +class OPENVDB_API Queue +{ +public: + /// Default maximum queue length (see setCapacity()) + static const Index32 DEFAULT_CAPACITY = 100; + /// @brief Default maximum time in seconds to wait to queue a task + /// when the queue is full (see setTimeout()) + static const Index32 DEFAULT_TIMEOUT = 120; // seconds + + /// ID number of a queued task or of a registered notification callback + using Id = Index32; + + /// Status of a queued task + enum Status { UNKNOWN, PENDING, SUCCEEDED, FAILED }; + + + /// Construct a queue with the given capacity. + explicit Queue(Index32 capacity = DEFAULT_CAPACITY); + /// Block until all queued tasks complete (successfully or unsuccessfully). + ~Queue(); + + /// @brief Return @c true if the queue is empty. + bool empty() const; + /// @brief Return the number of tasks currently in the queue. + Index32 size() const; + + /// @brief Return the maximum number of tasks allowed in the queue. + /// @details Once the queue has reached its maximum size, adding + /// a new task will block until an existing task has executed. + Index32 capacity() const; + /// Set the maximum number of tasks allowed in the queue. + void setCapacity(Index32); + + /// Return the maximum number of seconds to wait to queue a task when the queue is full. + Index32 timeout() const; + /// Set the maximum number of seconds to wait to queue a task when the queue is full. + void setTimeout(Index32 seconds = DEFAULT_TIMEOUT); + + /// @brief Return the status of the task with the given ID. + /// @note Querying the status of a task that has already completed + /// (whether successfully or not) removes the task from the status registry. + /// Subsequent queries of its status will return UNKNOWN. + Status status(Id) const; + + using Notifier = std::function; + /// @brief Register a function that will be called with a task's ID + /// and status when that task completes, whether successfully or not. + /// @return an ID that can be passed to removeNotifier() to deregister the function + /// @details When multiple notifiers are registered, they are called + /// in the order in which they were registered. + /// @warning Notifiers are called from worker threads, so they must be thread-safe + /// and their lifetimes must exceed that of the queue. They must also not call, + /// directly or indirectly, addNotifier(), removeNotifier() or clearNotifiers(), + /// as that can result in a deadlock. + Id addNotifier(Notifier); + /// Deregister the notifier with the given ID. + void removeNotifier(Id); + /// Deregister all notifiers. + void clearNotifiers(); + + /// @brief Queue a single grid for output to a file or stream. + /// @param grid the grid to be serialized + /// @param archive the io::File or io::Stream to which to output the grid + /// @param fileMetadata optional file-level metadata + /// @return an ID with which the status of the queued task can be queried + /// @throw RuntimeError if the task cannot be queued within the time limit + /// (see setTimeout()) because the queue is full + /// @par Example: + /// @code + /// openvdb::FloatGrid::Ptr grid = ...; + /// + /// openvdb::io::Queue queue; + /// + /// // Write the grid to the file mygrid.vdb. + /// queue.writeGrid(grid, openvdb::io::File("mygrid.vdb")); + /// + /// // Stream the grid to a binary string. + /// std::ostringstream ostr(std::ios_base::binary); + /// queue.writeGrid(grid, openvdb::io::Stream(ostr)); + /// @endcode + Id writeGrid(GridBase::ConstPtr grid, const Archive& archive, + const MetaMap& fileMetadata = MetaMap()); + + /// @brief Queue a container of grids for output to a file. + /// @param grids any iterable container of grid pointers + /// (e.g., a GridPtrVec or GridPtrSet) + /// @param archive the io::File or io::Stream to which to output the grids + /// @param fileMetadata optional file-level metadata + /// @return an ID with which the status of the queued task can be queried + /// @throw RuntimeError if the task cannot be queued within the time limit + /// (see setTimeout()) because the queue is full + /// @par Example: + /// @code + /// openvdb::FloatGrid::Ptr floatGrid = ...; + /// openvdb::BoolGrid::Ptr boolGrid = ...; + /// openvdb::GridPtrVec grids; + /// grids.push_back(floatGrid); + /// grids.push_back(boolGrid); + /// + /// openvdb::io::Queue queue; + /// + /// // Write the grids to the file mygrid.vdb. + /// queue.write(grids, openvdb::io::File("mygrid.vdb")); + /// + /// // Stream the grids to a (binary) string. + /// std::ostringstream ostr(std::ios_base::binary); + /// queue.write(grids, openvdb::io::Stream(ostr)); + /// @endcode + template + Id write(const GridPtrContainer& grids, const Archive& archive, + const MetaMap& fileMetadata = MetaMap()); + +private: + // Disallow copying of instances of this class. + Queue(const Queue&); + Queue& operator=(const Queue&); + + Id writeGridVec(const GridCPtrVec&, const Archive&, const MetaMap&); + + struct Impl; + std::unique_ptr mImpl; +}; // class Queue + + +template +inline Queue::Id +Queue::write(const GridPtrContainer& container, + const Archive& archive, const MetaMap& metadata) +{ + GridCPtrVec grids; + std::copy(container.begin(), container.end(), std::back_inserter(grids)); + return this->writeGridVec(grids, archive, metadata); +} + +// Specialization for vectors of const Grid pointers; no copying necessary +template<> +inline Queue::Id +Queue::write(const GridCPtrVec& grids, + const Archive& archive, const MetaMap& metadata) +{ + return this->writeGridVec(grids, archive, metadata); +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_QUEUE_HAS_BEEN_INCLUDED diff --git a/openvdb/io/Stream.cc b/openvdb/io/Stream.cc new file mode 100644 index 00000000..7dd66a8a --- /dev/null +++ b/openvdb/io/Stream.cc @@ -0,0 +1,238 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Stream.h" + +#include "File.h" ///< @todo refactor +#include "GridDescriptor.h" +#include "TempFile.h" +#include +#include +#include +#include // for remove() +#include // for std::bind() +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +struct Stream::Impl +{ + Impl(): mOutputStream{nullptr} {} + Impl(const Impl& other) { *this = other; } + Impl& operator=(const Impl& other) + { + if (&other != this) { + mMeta = other.mMeta; ///< @todo deep copy? + mGrids = other.mGrids; ///< @todo deep copy? + mOutputStream = other.mOutputStream; + mFile.reset(); + } + return *this; + } + + MetaMap::Ptr mMeta; + GridPtrVecPtr mGrids; + std::ostream* mOutputStream; + std::unique_ptr mFile; +}; + + +//////////////////////////////////////// + + +namespace { + +/// @todo Use MappedFile auto-deletion instead. +void +removeTempFile(const std::string expectedFilename, const std::string& filename) +{ + if (filename == expectedFilename) { + if (0 != std::remove(filename.c_str())) { + std::string mesg = getErrorString(); + if (!mesg.empty()) mesg = " (" + mesg + ")"; + OPENVDB_LOG_WARN("failed to remove temporary file " << filename << mesg); + } + } +} + +} + + +Stream::Stream(std::istream& is, bool delayLoad): mImpl(new Impl) +{ + if (!is) return; + + if (delayLoad && Archive::isDelayedLoadingEnabled()) { + // Copy the contents of the stream to a temporary private file + // and open the file instead. + std::unique_ptr tempFile; + try { + tempFile.reset(new TempFile); + } catch (std::exception& e) { + std::string mesg; + if (e.what()) mesg = std::string(" (") + e.what() + ")"; + OPENVDB_LOG_WARN("failed to create a temporary file for delayed loading" << mesg + << "; will read directly from the input stream instead"); + } + if (tempFile) { + boost::iostreams::copy(is, *tempFile); + const std::string& filename = tempFile->filename(); + mImpl->mFile.reset(new File(filename)); + mImpl->mFile->setCopyMaxBytes(0); // don't make a copy of the temporary file + /// @todo Need to pass auto-deletion flag to MappedFile. + mImpl->mFile->open(delayLoad, + std::bind(&removeTempFile, filename, std::placeholders::_1)); + } + } + + if (!mImpl->mFile) { + readHeader(is); + + // Tag the input stream with the library and file format version numbers + // and the compression options specified in the header. + StreamMetadata::Ptr streamMetadata(new StreamMetadata); + io::setStreamMetadataPtr(is, streamMetadata, /*transfer=*/false); + io::setVersion(is, libraryVersion(), fileVersion()); + io::setDataCompression(is, compression()); + + // Read in the VDB metadata. + mImpl->mMeta.reset(new MetaMap); + mImpl->mMeta->readMeta(is); + + // Read in the number of grids. + const int32_t gridCount = readGridCount(is); + + // Read in all grids and insert them into mGrids. + mImpl->mGrids.reset(new GridPtrVec); + std::vector descriptors; + descriptors.reserve(gridCount); + Archive::NamedGridMap namedGrids; + for (int32_t i = 0; i < gridCount; ++i) { + GridDescriptor gd; + gd.read(is); + descriptors.push_back(gd); + GridBase::Ptr grid = readGrid(gd, is); + mImpl->mGrids->push_back(grid); + namedGrids[gd.uniqueName()] = grid; + } + + // Connect instances (grids that share trees with other grids). + for (size_t i = 0, N = descriptors.size(); i < N; ++i) { + Archive::connectInstance(descriptors[i], namedGrids); + } + } +} + + +Stream::Stream(): mImpl(new Impl) +{ +} + + +Stream::Stream(std::ostream& os): mImpl(new Impl) +{ + mImpl->mOutputStream = &os; +} + + +Stream::~Stream() +{ +} + + +Stream::Stream(const Stream& other): Archive(other), mImpl(new Impl(*other.mImpl)) +{ +} + + +Stream& +Stream::operator=(const Stream& other) +{ + if (&other != this) { + mImpl.reset(new Impl(*other.mImpl)); + } + return *this; +} + + +SharedPtr +Stream::copy() const +{ + return SharedPtr(new Stream(*this)); +} + + +//////////////////////////////////////// + + +GridBase::Ptr +Stream::readGrid(const GridDescriptor& gd, std::istream& is) const +{ + GridBase::Ptr grid; + + if (!GridBase::isRegistered(gd.gridType())) { + OPENVDB_THROW(TypeError, "can't read grid \"" + << GridDescriptor::nameAsString(gd.uniqueName()) << + "\" from input stream because grid type " << gd.gridType() << " is unknown"); + } else { + grid = GridBase::createGrid(gd.gridType()); + if (grid) grid->setSaveFloatAsHalf(gd.saveFloatAsHalf()); + + Archive::readGrid(grid, gd, is); + } + return grid; +} + + +void +Stream::write(const GridCPtrVec& grids, const MetaMap& metadata) const +{ + if (mImpl->mOutputStream == nullptr) { + OPENVDB_THROW(ValueError, "no output stream was specified"); + } + this->writeGrids(*mImpl->mOutputStream, grids, metadata); +} + + +void +Stream::writeGrids(std::ostream& os, const GridCPtrVec& grids, const MetaMap& metadata) const +{ + Archive::write(os, grids, /*seekable=*/false, metadata); +} + + +//////////////////////////////////////// + + +MetaMap::Ptr +Stream::getMetadata() const +{ + MetaMap::Ptr result; + if (mImpl->mFile) { + result = mImpl->mFile->getMetadata(); + } else if (mImpl->mMeta) { + // Return a deep copy of the file-level metadata + // that was read when this object was constructed. + result.reset(new MetaMap(*mImpl->mMeta)); + } + return result; +} + + +GridPtrVecPtr +Stream::getGrids() +{ + if (mImpl->mFile) { + return mImpl->mFile->getGrids(); + } + return mImpl->mGrids; +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/Stream.h b/openvdb/io/Stream.h new file mode 100644 index 00000000..049bc43d --- /dev/null +++ b/openvdb/io/Stream.h @@ -0,0 +1,89 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_IO_STREAM_HAS_BEEN_INCLUDED +#define OPENVDB_IO_STREAM_HAS_BEEN_INCLUDED + +#include "Archive.h" +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +class GridDescriptor; + + +/// Grid archive associated with arbitrary input and output streams (not necessarily files) +class OPENVDB_API Stream: public Archive +{ +public: + /// @brief Read grids from an input stream. + /// @details If @a delayLoad is true, map the contents of the input stream + /// into memory and enable delayed loading of grids. + /// @note Define the environment variable @c OPENVDB_DISABLE_DELAYED_LOAD + /// to disable delayed loading unconditionally. + explicit Stream(std::istream&, bool delayLoad = true); + + /// Construct an archive for stream output. + Stream(); + /// Construct an archive for output to the given stream. + explicit Stream(std::ostream&); + + Stream(const Stream&); + Stream& operator=(const Stream&); + + ~Stream() override; + + /// @brief Return a copy of this archive. + Archive::Ptr copy() const override; + + /// Return the file-level metadata in a newly created MetaMap. + MetaMap::Ptr getMetadata() const; + + /// Return pointers to the grids that were read from the input stream. + GridPtrVecPtr getGrids(); + + /// @brief Write the grids in the given container to this archive's output stream. + /// @throw ValueError if this archive was constructed without specifying an output stream. + void write(const GridCPtrVec&, const MetaMap& = MetaMap()) const override; + + /// @brief Write the grids in the given container to this archive's output stream. + /// @throw ValueError if this archive was constructed without specifying an output stream. + template + void write(const GridPtrContainerT&, const MetaMap& = MetaMap()) const; + +private: + /// Create a new grid of the type specified by the given descriptor, + /// then populate the grid from the given input stream. + /// @return the newly created grid. + GridBase::Ptr readGrid(const GridDescriptor&, std::istream&) const; + + void writeGrids(std::ostream&, const GridCPtrVec&, const MetaMap&) const; + + + struct Impl; + std::unique_ptr mImpl; +}; + + +//////////////////////////////////////// + + +template +inline void +Stream::write(const GridPtrContainerT& container, const MetaMap& metadata) const +{ + GridCPtrVec grids; + std::copy(container.begin(), container.end(), std::back_inserter(grids)); + this->write(grids, metadata); +} + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_STREAM_HAS_BEEN_INCLUDED diff --git a/openvdb/io/TempFile.cc b/openvdb/io/TempFile.cc new file mode 100644 index 00000000..878fba11 --- /dev/null +++ b/openvdb/io/TempFile.cc @@ -0,0 +1,136 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file TempFile.cc + +#include "TempFile.h" + +#include +#ifndef _MSC_VER +#include +#include +#include // for std::getenv(), mkstemp() +#include // for mode_t +#include // for mkdir(), umask() +#include // for access() +#else +#include // for std::filebuf +#endif +#include // for std::tmpnam(), L_tmpnam, P_tmpdir +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +struct TempFile::TempFileImpl +{ + const std::string& filename() const { return mPath; } + + bool is_open() const { return mBuffer.is_open(); } + + /// @internal boost::filesystem::unique_path(), etc. might be useful here, + /// but as of 9/2014, Houdini ships without the Boost.Filesystem library, + /// which makes it much less convenient to use that library. +#ifndef _MSC_VER + TempFileImpl(std::ostream& os): mFileDescr(-1) { this->init(os); } + + void init(std::ostream& os) + { + std::string fn = this->getTempDir() + "/openvdb_temp_XXXXXX"; + std::vector fnbuf(fn.begin(), fn.end()); + fnbuf.push_back(char(0)); + + //const mode_t savedMode = ::umask(~(S_IRUSR | S_IWUSR)); + mFileDescr = ::mkstemp(&fnbuf[0]); + //::umask(savedMode); + if (mFileDescr < 0) { + OPENVDB_THROW(IoError, "failed to generate temporary file"); + } + + mPath.assign(&fnbuf[0]); + + mDevice = DeviceType(mFileDescr, boost::iostreams::never_close_handle); + mBuffer.open(mDevice); + os.rdbuf(&mBuffer); + + if (!os.good()) { + OPENVDB_THROW(IoError, "failed to open temporary file " + mPath); + } + } + + void close() { mBuffer.close(); if (mFileDescr >= 0) ::close(mFileDescr); } + + static std::string getTempDir() + { + if (const char* dir = std::getenv("OPENVDB_TEMP_DIR")) { + if (0 != ::access(dir, F_OK)) { + ::mkdir(dir, S_IRUSR | S_IWUSR | S_IXUSR); + if (0 != ::access(dir, F_OK)) { + OPENVDB_THROW(IoError, + "failed to create OPENVDB_TEMP_DIR (" + std::string(dir) + ")"); + } + } + return dir; + } + if (const char* dir = std::getenv("TMPDIR")) return dir; + return P_tmpdir; + } + + using DeviceType = boost::iostreams::file_descriptor_sink; + using BufferType = boost::iostreams::stream_buffer; + + std::string mPath; + DeviceType mDevice; + BufferType mBuffer; + int mFileDescr; +#else // _MSC_VER + // Use only standard library routines; no POSIX. + + TempFileImpl(std::ostream& os) { this->init(os); } + + void init(std::ostream& os) + { + char fnbuf[L_tmpnam]; + const char* filename = std::tmpnam(fnbuf); + if (!filename) { + OPENVDB_THROW(IoError, "failed to generate name for temporary file"); + } + /// @todo This is not safe, since another process could open a file + /// with this name before we do. Unfortunately, there is no safe, + /// portable way to create a temporary file. + mPath = filename; + + const std::ios_base::openmode mode = (std::ios_base::out | std::ios_base::binary); + os.rdbuf(mBuffer.open(mPath.c_str(), mode)); + if (!os.good()) { + OPENVDB_THROW(IoError, "failed to open temporary file " + mPath); + } + } + + void close() { mBuffer.close(); } + + std::string mPath; + std::filebuf mBuffer; +#endif // _MSC_VER + +private: + TempFileImpl(const TempFileImpl&); // disable copying + TempFileImpl& operator=(const TempFileImpl&); // disable assignment +}; + + +TempFile::TempFile(): std::ostream(nullptr), mImpl(new TempFileImpl(*this)) {} +TempFile::~TempFile() { this->close(); } +const std::string& TempFile::filename() const { return mImpl->filename(); } +bool TempFile::is_open() const { return mImpl->is_open(); } +void TempFile::close() { mImpl->close(); } + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/io/TempFile.h b/openvdb/io/TempFile.h new file mode 100644 index 00000000..6df21d03 --- /dev/null +++ b/openvdb/io/TempFile.h @@ -0,0 +1,50 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file TempFile.h + +#ifndef OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED +#define OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED + +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace io { + +/// Output stream to a unique temporary file +class OPENVDB_API TempFile: public std::ostream +{ +public: + /// @brief Create and open a unique file. + /// @details On UNIX systems, the file is created in the directory specified by + /// the environment variable @c OPENVDB_TEMP_DIR, if that variable is defined, + /// or else in the directory specified by @c TMPDIR, if that variable is defined. + /// Otherwise (and on non-UNIX systems), the file is created in the system default + /// temporary directory. + TempFile(); + ~TempFile(); + + /// Return the path to the temporary file. + const std::string& filename() const; + + /// Return @c true if the file is open for writing. + bool is_open() const; + + /// Close the file. + void close(); + +private: + struct TempFileImpl; + std::unique_ptr mImpl; +}; + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED diff --git a/openvdb/io/io.h b/openvdb/io/io.h new file mode 100644 index 00000000..682429bb --- /dev/null +++ b/openvdb/io/io.h @@ -0,0 +1,274 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_IO_IO_HAS_BEEN_INCLUDED +#define OPENVDB_IO_IO_HAS_BEEN_INCLUDED + +#include +#include // for SharedPtr +#include +#include +#include +#include // for std::ios_base +#include +#include +#include + +class TestMappedFile; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +class MetaMap; + +namespace io { + +/// @brief Container for metadata describing how to unserialize grids from and/or +/// serialize grids to a stream (which file format, compression scheme, etc. to use) +/// @details This class is mainly for internal use. +class OPENVDB_API StreamMetadata +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + StreamMetadata(); + StreamMetadata(const StreamMetadata&); + explicit StreamMetadata(std::ios_base&); + ~StreamMetadata(); + + StreamMetadata& operator=(const StreamMetadata&); + + /// @brief Transfer metadata items directly to the given stream. + /// @todo Deprecate direct transfer; use StreamMetadata structs everywhere. + void transferTo(std::ios_base&) const; + + uint32_t fileVersion() const; + void setFileVersion(uint32_t); + + VersionId libraryVersion() const; + void setLibraryVersion(VersionId); + + uint32_t compression() const; + void setCompression(uint32_t); + + uint32_t gridClass() const; + void setGridClass(uint32_t); + + const void* backgroundPtr() const; + void setBackgroundPtr(const void*); + + bool halfFloat() const; + void setHalfFloat(bool); + + bool writeGridStats() const; + void setWriteGridStats(bool); + + bool seekable() const; + void setSeekable(bool); + + bool delayedLoadMeta() const; + + bool countingPasses() const; + void setCountingPasses(bool); + + uint32_t pass() const; + void setPass(uint32_t); + + uint64_t leaf() const; + void setLeaf(uint64_t); + + //@{ + /// @brief Return a (reference to a) copy of the metadata of the grid + /// currently being read or written. + /// @details Some grid metadata might duplicate information returned by + /// gridClass(), backgroundPtr() and other accessors, but those values + /// are not guaranteed to be kept in sync. + MetaMap& gridMetadata(); + const MetaMap& gridMetadata() const; + //@} + + using AuxDataMap = std::map; + //@{ + /// @brief Return a map that can be populated with arbitrary user data. + AuxDataMap& auxData(); + const AuxDataMap& auxData() const; + //@} + + /// @private + uint32_t __test() const; + /// @private + void __setTest(uint32_t); + + /// Return a string describing this stream metadata. + std::string str() const; + +private: + struct Impl; + std::unique_ptr mImpl; +}; // class StreamMetadata + + +/// Write a description of the given metadata to an output stream. +std::ostream& operator<<(std::ostream&, const StreamMetadata&); + +std::ostream& operator<<(std::ostream&, const StreamMetadata::AuxDataMap&); + + +//////////////////////////////////////// + + +/// @brief Leaf nodes that require multi-pass I/O must inherit from this struct. +/// @sa Grid::hasMultiPassIO() +struct MultiPass {}; + + +//////////////////////////////////////// + + +class File; + +/// @brief Handle to control the lifetime of a memory-mapped .vdb file +class OPENVDB_API MappedFile +{ +public: + using Ptr = SharedPtr; + + ~MappedFile(); + MappedFile(const MappedFile&) = delete; // not copyable + MappedFile& operator=(const MappedFile&) = delete; + + /// Return the filename of the mapped file. + std::string filename() const; + + /// @brief Return a new stream buffer for the mapped file. + /// @details Typical usage is + /// @code + /// openvdb::io::MappedFile::Ptr mappedFile = ...; + /// auto buf = mappedFile->createBuffer(); + /// std::istream istrm{buf.get()}; + /// // Read from istrm... + /// @endcode + /// The buffer must persist as long as the stream is open. + SharedPtr createBuffer() const; + + using Notifier = std::function; + /// @brief Register a function that will be called with this file's name + /// when the file is unmapped. + void setNotifier(const Notifier&); + /// Deregister the notifier. + void clearNotifier(); + +private: + friend class File; + friend class ::TestMappedFile; + + explicit MappedFile(const std::string& filename, bool autoDelete = false); + + class Impl; + std::unique_ptr mImpl; +}; // class MappedFile + + +//////////////////////////////////////// + + +/// Return a string (possibly empty) describing the given system error code. +std::string getErrorString(int errorNum); + + +/// Return a string (possibly empty) describing the most recent system error. +std::string getErrorString(); + + +//////////////////////////////////////// + + +/// @brief Return the file format version number associated with the given input stream. +/// @sa File::setFormatVersion() +OPENVDB_API uint32_t getFormatVersion(std::ios_base&); + +/// @brief Return the (major, minor) library version number associated with the given input stream. +/// @sa File::setLibraryVersion() +OPENVDB_API VersionId getLibraryVersion(std::ios_base&); + +/// @brief Return a string of the form "./", giving the library +/// and file format version numbers associated with the given input stream. +OPENVDB_API std::string getVersion(std::ios_base&); + +/// Associate the current file format and library version numbers with the given input stream. +OPENVDB_API void setCurrentVersion(std::istream&); + +/// @brief Associate specific file format and library version numbers with the given stream. +/// @details This is typically called immediately after reading a header that contains +/// the version numbers. Data read subsequently can then be interpreted appropriately. +OPENVDB_API void setVersion(std::ios_base&, const VersionId& libraryVersion, uint32_t fileVersion); + +/// @brief Return a bitwise OR of compression option flags (COMPRESS_ZIP, +/// COMPRESS_ACTIVE_MASK, etc.) specifying whether and how input data is compressed +/// or output data should be compressed. +OPENVDB_API uint32_t getDataCompression(std::ios_base&); +/// @brief Associate with the given stream a bitwise OR of compression option flags +/// (COMPRESS_ZIP, COMPRESS_ACTIVE_MASK, etc.) specifying whether and how input data +/// is compressed or output data should be compressed. +OPENVDB_API void setDataCompression(std::ios_base&, uint32_t compressionFlags); + +/// @brief Return the class (GRID_LEVEL_SET, GRID_UNKNOWN, etc.) of the grid +/// currently being read from or written to the given stream. +OPENVDB_API uint32_t getGridClass(std::ios_base&); +/// @brief Associate with the given stream the class (GRID_LEVEL_SET, GRID_UNKNOWN, etc.) +/// of the grid currently being read or written. +OPENVDB_API void setGridClass(std::ios_base&, uint32_t); + +/// @brief Return true if floating-point values should be quantized to 16 bits when writing +/// to the given stream or promoted back from 16-bit to full precision when reading from it. +OPENVDB_API bool getHalfFloat(std::ios_base&); +/// @brief Specify whether floating-point values should be quantized to 16 bits when writing +/// to the given stream or promoted back from 16-bit to full precision when reading from it. +OPENVDB_API void setHalfFloat(std::ios_base&, bool); + +/// @brief Return a pointer to the background value of the grid +/// currently being read from or written to the given stream. +OPENVDB_API const void* getGridBackgroundValuePtr(std::ios_base&); +/// @brief Specify (a pointer to) the background value of the grid +/// currently being read from or written to the given stream. +/// @note The pointer must remain valid until the entire grid has been read or written. +OPENVDB_API void setGridBackgroundValuePtr(std::ios_base&, const void* background); + +/// @brief Return @c true if grid statistics (active voxel count and bounding box, etc.) +/// should be computed and stored as grid metadata when writing to the given stream. +OPENVDB_API bool getWriteGridStatsMetadata(std::ios_base&); +/// @brief Specify whether to compute grid statistics (active voxel count and bounding box, etc.) +/// and store them as grid metadata when writing to the given stream. +OPENVDB_API void setWriteGridStatsMetadata(std::ios_base&, bool writeGridStats); + +/// @brief Return a shared pointer to the memory-mapped file with which the given stream +/// is associated, or a null pointer if the stream is not associated with a memory-mapped file. +OPENVDB_API SharedPtr getMappedFilePtr(std::ios_base&); +/// @brief Associate the given stream with (a shared pointer to) a memory-mapped file. +/// @note The shared pointer object (not just the io::MappedFile object to which it points) +/// must remain valid until the file is closed. +OPENVDB_API void setMappedFilePtr(std::ios_base&, SharedPtr&); + +/// @brief Return a shared pointer to an object that stores metadata (file format, +/// compression scheme, etc.) for use when reading from or writing to the given stream. +OPENVDB_API SharedPtr getStreamMetadataPtr(std::ios_base&); +/// @brief Associate the given stream with (a shared pointer to) an object that stores +/// metadata (file format, compression scheme, etc.) for use when reading from +/// or writing to the stream. +/// @details If @a transfer is true, copy metadata from the object directly to the stream +/// (for backward compatibility with older versions of the library). +/// @note The shared pointer object (not just the io::StreamMetadata object to which it points) +/// must remain valid until the file is closed. +OPENVDB_API void setStreamMetadataPtr(std::ios_base&, + SharedPtr&, bool transfer = true); +/// @brief Dissociate the given stream from its metadata object (if it has one) +/// and return a shared pointer to the object. +OPENVDB_API SharedPtr clearStreamMetadataPtr(std::ios_base&); + +} // namespace io +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_IO_IO_HAS_BEEN_INCLUDED diff --git a/openvdb/lib/libopenvdb.7.0.0.dylib b/openvdb/lib/libopenvdb.7.0.0.dylib new file mode 100644 index 0000000000000000000000000000000000000000..ef1a60c2352511f63cd4d9c2cd708d27c2bf10f3 GIT binary patch literal 3765576 zcmeEv33OCN_IC#o(ySd2Bq&Ibzyw#K1``EMlQg{6j>ZK=B?d$gl_f&Apcn~uGV*w~ zGBYy6IHHU?%8Xmofr$&yk)?y8#yyI%xIo25L6Lx>^!NK!z3zUU1P#vrJOA%Hhn$n- zy?Rx*Zr!@~)~#E&s^0qX>qDtFTT*+Q&DH_G$Kf}>qs>-T(H&1VTOa(+X=k&QmR{}} zd$~+X{8P*lmLKyy1xfq`Z241K>YX&lYrf!Lb9m!VQ{O)A+*>~IJvpA8FBR6;($ZO8 z-*vNMNzLJ%caDN{oe6~RNwM5Eo85%RHuFcpE1fcFYT2Zj@;$M=%g$5qhM5iGJIE6M zX@TDj6DO8Vnlo`ynYYwC;kxGdHMkVKJrfjGd{2NEhb*5;ODE3q&b)E@4Q6_Cc=b=D 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--- /dev/null +++ b/openvdb/lib/libopenvdb.7.0.dylib @@ -0,0 +1 @@ +libopenvdb.7.0.0.dylib \ No newline at end of file diff --git a/openvdb/lib/libopenvdb.dylib b/openvdb/lib/libopenvdb.dylib new file mode 120000 index 00000000..d5938a34 --- /dev/null +++ b/openvdb/lib/libopenvdb.dylib @@ -0,0 +1 @@ +libopenvdb.7.0.0.dylib \ No newline at end of file diff --git a/openvdb/math/BBox.h b/openvdb/math/BBox.h new file mode 100644 index 00000000..b2e8d70e --- /dev/null +++ b/openvdb/math/BBox.h @@ -0,0 +1,423 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_BBOX_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_BBOX_HAS_BEEN_INCLUDED + +#include "Math.h" // for math::isApproxEqual() and math::Tolerance() +#include "Vec3.h" +#include // for std::min(), std::max() +#include // for std::abs() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief Axis-aligned bounding box +template +class BBox +{ +public: + using Vec3Type = Vec3T; + using ValueType = Vec3T; + using VectorType = Vec3T; + using ElementType = typename Vec3Type::ValueType; + + /// @brief The default constructor creates an invalid bounding box. + BBox(); + /// @brief Construct a bounding box that exactly encloses the given + /// minimum and maximum points. + BBox(const Vec3T& xyzMin, const Vec3T& xyzMax); + /// @brief Construct a bounding box that exactly encloses the given + /// minimum and maximum points. + /// @details If @a sorted is false, sort the points by their + /// @e x, @e y and @e z components. + BBox(const Vec3T& xyzMin, const Vec3T& xyzMax, bool sorted); + /// @brief Contruct a cubical bounding box from a minimum coordinate + /// and an edge length. + /// @note Inclusive for integral ElementTypes + BBox(const Vec3T& xyzMin, const ElementType& length); + + /// @brief Construct a bounding box that exactly encloses two points, + /// whose coordinates are given by an array of six values, + /// x1, y1, z1, + /// x2, y2 and z2. + /// @details If @a sorted is false, sort the points by their + /// @e x, @e y and @e z components. + explicit BBox(const ElementType* xyz, bool sorted = true); + + BBox(const BBox&) = default; + BBox& operator=(const BBox&) = default; + + /// @brief Sort the mininum and maximum points of this bounding box + /// by their @e x, @e y and @e z components. + void sort(); + + /// @brief Return a const reference to the minimum point of this bounding box. + const Vec3T& min() const { return mMin; } + /// @brief Return a const reference to the maximum point of this bounding box. + const Vec3T& max() const { return mMax; } + /// @brief Return a non-const reference to the minimum point of this bounding box. + Vec3T& min() { return mMin; } + /// @brief Return a non-const reference to the maximum point of this bounding box. + Vec3T& max() { return mMax; } + + /// @brief Return @c true if this bounding box is identical to the given bounding box. + bool operator==(const BBox& rhs) const; + /// @brief Return @c true if this bounding box differs from the given bounding box. + bool operator!=(const BBox& rhs) const { return !(*this == rhs); } + + /// @brief Return @c true if this bounding box is empty, i.e., it has no (positive) volume. + bool empty() const; + /// @brief Return @c true if this bounding box has (positive) volume. + bool hasVolume() const { return !this->empty(); } + /// @brief Return @c true if this bounding box has (positive) volume. + operator bool() const { return !this->empty(); } + + /// @brief Return @c true if all components of the minimum point are less than + /// or equal to the corresponding components of the maximum point. + /// @details This is equivalent to testing whether this bounding box has nonnegative volume. + /// @note For floating-point ElementTypes a tolerance is used for this test. + bool isSorted() const; + + /// @brief Return the center point of this bounding box. + Vec3d getCenter() const; + + /// @brief Return the extents of this bounding box, i.e., the length along each axis. + /// @note Inclusive for integral ElementTypes + Vec3T extents() const; + /// @brief Return the index (0, 1 or 2) of the longest axis. + size_t maxExtent() const { return MaxIndex(mMax - mMin); } + /// @brief Return the index (0, 1 or 2) of the shortest axis. + size_t minExtent() const { return MinIndex(mMax - mMin); } + + /// @brief Return the volume enclosed by this bounding box. + ElementType volume() const { Vec3T e = this->extents(); return e[0] * e[1] * e[2]; } + + /// @brief Return @c true if the given point is inside this bounding box. + bool isInside(const Vec3T& xyz) const; + /// @brief Return @c true if the given bounding box is inside this bounding box. + bool isInside(const BBox&) const; + /// @brief Return @c true if the given bounding box overlaps with this bounding box. + bool hasOverlap(const BBox&) const; + /// @brief Return @c true if the given bounding box overlaps with this bounding box. + bool intersects(const BBox& other) const { return hasOverlap(other); } + + /// @brief Pad this bounding box. + void expand(ElementType padding); + /// @brief Expand this bounding box to enclose the given point. + void expand(const Vec3T& xyz); + /// @brief Union this bounding box with the given bounding box. + void expand(const BBox&); + /// @brief Union this bounding box with the cubical bounding box with + /// minimum point @a xyzMin and the given edge length. + /// @note Inclusive for integral ElementTypes + void expand(const Vec3T& xyzMin, const ElementType& length); + + /// @brief Translate this bounding box by + /// (tx, ty, tz). + void translate(const Vec3T& t); + + /// @brief Apply a map to this bounding box. + template + BBox applyMap(const MapType& map) const; + /// @brief Apply the inverse of a map to this bounding box + template + BBox applyInverseMap(const MapType& map) const; + + /// @brief Unserialize this bounding box from the given stream. + void read(std::istream& is) { mMin.read(is); mMax.read(is); } + /// @brief Serialize this bounding box to the given stream. + void write(std::ostream& os) const { mMin.write(os); mMax.write(os); } + +private: + Vec3T mMin, mMax; +}; // class BBox + + +//////////////////////////////////////// + + +template +inline +BBox::BBox(): + mMin( std::numeric_limits::max()), + mMax(-std::numeric_limits::max()) +{ +} + +template +inline +BBox::BBox(const Vec3T& xyzMin, const Vec3T& xyzMax): + mMin(xyzMin), mMax(xyzMax) +{ +} + +template +inline +BBox::BBox(const Vec3T& xyzMin, const Vec3T& xyzMax, bool sorted): + mMin(xyzMin), mMax(xyzMax) +{ + if (!sorted) this->sort(); +} + +template +inline +BBox::BBox(const Vec3T& xyzMin, const ElementType& length): + mMin(xyzMin), mMax(xyzMin) +{ + // min and max are inclusive for integral ElementType + const ElementType size = std::is_integral::value ? length-1 : length; + mMax[0] += size; + mMax[1] += size; + mMax[2] += size; +} + +template +inline +BBox::BBox(const ElementType* xyz, bool sorted): + mMin(xyz[0], xyz[1], xyz[2]), + mMax(xyz[3], xyz[4], xyz[5]) +{ + if (!sorted) this->sort(); +} + + +//////////////////////////////////////// + + +template +inline bool +BBox::empty() const +{ + if (std::is_integral::value) { + // min and max are inclusive for integral ElementType + return (mMin[0] > mMax[0] || mMin[1] > mMax[1] || mMin[2] > mMax[2]); + } + return mMin[0] >= mMax[0] || mMin[1] >= mMax[1] || mMin[2] >= mMax[2]; +} + + +template +inline bool +BBox::operator==(const BBox& rhs) const +{ + if (std::is_integral::value) { + return mMin == rhs.min() && mMax == rhs.max(); + } else { + return math::isApproxEqual(mMin, rhs.min()) && math::isApproxEqual(mMax, rhs.max()); + } +} + + +template +inline void +BBox::sort() +{ + Vec3T tMin(mMin), tMax(mMax); + for (int i = 0; i < 3; ++i) { + mMin[i] = std::min(tMin[i], tMax[i]); + mMax[i] = std::max(tMin[i], tMax[i]); + } +} + + +template +inline bool +BBox::isSorted() const +{ + if (std::is_integral::value) { + return (mMin[0] <= mMax[0] && mMin[1] <= mMax[1] && mMin[2] <= mMax[2]); + } else { + ElementType t = math::Tolerance::value(); + return (mMin[0] < (mMax[0] + t) && mMin[1] < (mMax[1] + t) && mMin[2] < (mMax[2] + t)); + } +} + + +template +inline Vec3d +BBox::getCenter() const +{ + return (Vec3d(mMin.asPointer()) + Vec3d(mMax.asPointer())) * 0.5; +} + + +template +inline Vec3T +BBox::extents() const +{ + if (std::is_integral::value) { + return (mMax - mMin) + Vec3T(1, 1, 1); + } else { + return (mMax - mMin); + } +} + +//////////////////////////////////////// + + +template +inline bool +BBox::isInside(const Vec3T& xyz) const +{ + if (std::is_integral::value) { + return xyz[0] >= mMin[0] && xyz[0] <= mMax[0] && + xyz[1] >= mMin[1] && xyz[1] <= mMax[1] && + xyz[2] >= mMin[2] && xyz[2] <= mMax[2]; + } else { + ElementType t = math::Tolerance::value(); + return xyz[0] > (mMin[0]-t) && xyz[0] < (mMax[0]+t) && + xyz[1] > (mMin[1]-t) && xyz[1] < (mMax[1]+t) && + xyz[2] > (mMin[2]-t) && xyz[2] < (mMax[2]+t); + } +} + + +template +inline bool +BBox::isInside(const BBox& b) const +{ + if (std::is_integral::value) { + return b.min()[0] >= mMin[0] && b.max()[0] <= mMax[0] && + b.min()[1] >= mMin[1] && b.max()[1] <= mMax[1] && + b.min()[2] >= mMin[2] && b.max()[2] <= mMax[2]; + } else { + ElementType t = math::Tolerance::value(); + return (b.min()[0]-t) > mMin[0] && (b.max()[0]+t) < mMax[0] && + (b.min()[1]-t) > mMin[1] && (b.max()[1]+t) < mMax[1] && + (b.min()[2]-t) > mMin[2] && (b.max()[2]+t) < mMax[2]; + } +} + + +template +inline bool +BBox::hasOverlap(const BBox& b) const +{ + if (std::is_integral::value) { + return mMax[0] >= b.min()[0] && mMin[0] <= b.max()[0] && + mMax[1] >= b.min()[1] && mMin[1] <= b.max()[1] && + mMax[2] >= b.min()[2] && mMin[2] <= b.max()[2]; + } else { + ElementType t = math::Tolerance::value(); + return mMax[0] > (b.min()[0]-t) && mMin[0] < (b.max()[0]+t) && + mMax[1] > (b.min()[1]-t) && mMin[1] < (b.max()[1]+t) && + mMax[2] > (b.min()[2]-t) && mMin[2] < (b.max()[2]+t); + } +} + + +//////////////////////////////////////// + + +template +inline void +BBox::expand(ElementType dx) +{ + dx = std::abs(dx); + for (int i = 0; i < 3; ++i) { + mMin[i] -= dx; + mMax[i] += dx; + } +} + + +template +inline void +BBox::expand(const Vec3T& xyz) +{ + for (int i = 0; i < 3; ++i) { + mMin[i] = std::min(mMin[i], xyz[i]); + mMax[i] = std::max(mMax[i], xyz[i]); + } +} + + +template +inline void +BBox::expand(const BBox& b) +{ + for (int i = 0; i < 3; ++i) { + mMin[i] = std::min(mMin[i], b.min()[i]); + mMax[i] = std::max(mMax[i], b.max()[i]); + } +} + +template +inline void +BBox::expand(const Vec3T& xyzMin, const ElementType& length) +{ + const ElementType size = std::is_integral::value ? length-1 : length; + for (int i = 0; i < 3; ++i) { + mMin[i] = std::min(mMin[i], xyzMin[i]); + mMax[i] = std::max(mMax[i], xyzMin[i] + size); + } +} + + +template +inline void +BBox::translate(const Vec3T& dx) +{ + mMin += dx; + mMax += dx; +} + +template +template +inline BBox +BBox::applyMap(const MapType& map) const +{ + using Vec3R = Vec3; + BBox bbox; + bbox.expand(map.applyMap(Vec3R(mMin[0], mMin[1], mMin[2]))); + bbox.expand(map.applyMap(Vec3R(mMin[0], mMin[1], mMax[2]))); + bbox.expand(map.applyMap(Vec3R(mMin[0], mMax[1], mMin[2]))); + bbox.expand(map.applyMap(Vec3R(mMax[0], mMin[1], mMin[2]))); + bbox.expand(map.applyMap(Vec3R(mMax[0], mMax[1], mMin[2]))); + bbox.expand(map.applyMap(Vec3R(mMax[0], mMin[1], mMax[2]))); + bbox.expand(map.applyMap(Vec3R(mMin[0], mMax[1], mMax[2]))); + bbox.expand(map.applyMap(Vec3R(mMax[0], mMax[1], mMax[2]))); + return bbox; +} + +template +template +inline BBox +BBox::applyInverseMap(const MapType& map) const +{ + using Vec3R = Vec3; + BBox bbox; + bbox.expand(map.applyInverseMap(Vec3R(mMin[0], mMin[1], mMin[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMin[0], mMin[1], mMax[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMin[0], mMax[1], mMin[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMax[0], mMin[1], mMin[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMax[0], mMax[1], mMin[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMax[0], mMin[1], mMax[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMin[0], mMax[1], mMax[2]))); + bbox.expand(map.applyInverseMap(Vec3R(mMax[0], mMax[1], mMax[2]))); + return bbox; +} + +//////////////////////////////////////// + + +template +inline std::ostream& +operator<<(std::ostream& os, const BBox& b) +{ + os << b.min() << " -> " << b.max(); + return os; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_BBOX_HAS_BEEN_INCLUDED diff --git a/openvdb/math/ConjGradient.h b/openvdb/math/ConjGradient.h new file mode 100644 index 00000000..e8fb39e9 --- /dev/null +++ b/openvdb/math/ConjGradient.h @@ -0,0 +1,1771 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file ConjGradient.h +/// @authors D.J. Hill, Peter Cucka +/// @brief Preconditioned conjugate gradient solver (solves @e Ax = @e b using +/// the conjugate gradient method with one of a selection of preconditioners) + +#ifndef OPENVDB_MATH_CONJGRADIENT_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_CONJGRADIENT_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include "Math.h" // for Abs(), isZero(), Max(), Sqrt() +#include +#include +#include // for std::lower_bound() +#include +#include // for std::isfinite() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { +namespace pcg { + +using SizeType = Index32; + +using SizeRange = tbb::blocked_range; + +template class Vector; + +template class SparseStencilMatrix; + +template class Preconditioner; +template class JacobiPreconditioner; +template class IncompleteCholeskyPreconditioner; + +/// Information about the state of a conjugate gradient solution +struct State { + bool success; + int iterations; + double relativeError; + double absoluteError; +}; + + +/// Return default termination conditions for a conjugate gradient solver. +template +inline State +terminationDefaults() +{ + State s; + s.success = false; + s.iterations = 50; + s.relativeError = 1.0e-6; + s.absoluteError = std::numeric_limits::epsilon() * 100.0; + return s; +} + + +//////////////////////////////////////// + + +/// @brief Solve @e Ax = @e b via the preconditioned conjugate gradient method. +/// +/// @param A a symmetric, positive-definite, @e N x @e N matrix +/// @param b a vector of size @e N +/// @param x a vector of size @e N +/// @param preconditioner a Preconditioner matrix +/// @param termination termination conditions given as a State object with the following fields: +///
+///
success +///
ignored +///
iterations +///
the maximum number of iterations, with or without convergence +///
relativeError +///
the relative error ||b − Ax|| / ||b|| +/// that denotes convergence +///
absoluteError +///
the absolute error ||b − Ax|| that denotes convergence +/// +/// @throw ArithmeticError if either @a x or @a b is not of the appropriate size. +template +inline State +solve( + const PositiveDefMatrix& A, + const Vector& b, + Vector& x, + Preconditioner& preconditioner, + const State& termination = terminationDefaults()); + + +/// @brief Solve @e Ax = @e b via the preconditioned conjugate gradient method. +/// +/// @param A a symmetric, positive-definite, @e N x @e N matrix +/// @param b a vector of size @e N +/// @param x a vector of size @e N +/// @param preconditioner a Preconditioner matrix +/// @param termination termination conditions given as a State object with the following fields: +///
+///
success +///
ignored +///
iterations +///
the maximum number of iterations, with or without convergence +///
relativeError +///
the relative error ||b − Ax|| / ||b|| +/// that denotes convergence +///
absoluteError +///
the absolute error ||b − Ax|| that denotes convergence +/// @param interrupter an object adhering to the util::NullInterrupter interface +/// with which computation can be interrupted +/// +/// @throw ArithmeticError if either @a x or @a b is not of the appropriate size. +/// @throw RuntimeError if the computation is interrupted. +template +inline State +solve( + const PositiveDefMatrix& A, + const Vector& b, + Vector& x, + Preconditioner& preconditioner, + Interrupter& interrupter, + const State& termination = terminationDefaults()); + + +//////////////////////////////////////// + + +/// Lightweight, variable-length vector +template +class Vector +{ +public: + using ValueType = T; + using Ptr = SharedPtr; + + /// Construct an empty vector. + Vector(): mData(nullptr), mSize(0) {} + /// Construct a vector of @a n elements, with uninitialized values. + Vector(SizeType n): mData(new T[n]), mSize(n) {} + /// Construct a vector of @a n elements and initialize each element to the given value. + Vector(SizeType n, const ValueType& val): mData(new T[n]), mSize(n) { this->fill(val); } + + ~Vector() { mSize = 0; delete[] mData; mData = nullptr; } + + /// Deep copy the given vector. + Vector(const Vector&); + /// Deep copy the given vector. + Vector& operator=(const Vector&); + + /// Return the number of elements in this vector. + SizeType size() const { return mSize; } + /// Return @c true if this vector has no elements. + bool empty() const { return (mSize == 0); } + + /// @brief Reset this vector to have @a n elements, with uninitialized values. + /// @warning All of this vector's existing values will be lost. + void resize(SizeType n); + + /// Swap internal storage with another vector, which need not be the same size. + void swap(Vector& other) { std::swap(mData, other.mData); std::swap(mSize, other.mSize); } + + /// Set all elements of this vector to @a value. + void fill(const ValueType& value); + + //@{ + /// @brief Multiply each element of this vector by @a s. + template void scale(const Scalar& s); + template Vector& operator*=(const Scalar& s) { this->scale(s); return *this; } + //@} + + /// Return the dot product of this vector with the given vector, which must be the same size. + ValueType dot(const Vector&) const; + + /// Return the infinity norm of this vector. + ValueType infNorm() const; + /// Return the L2 norm of this vector. + ValueType l2Norm() const { return Sqrt(this->dot(*this)); } + + /// Return @c true if every element of this vector has a finite value. + bool isFinite() const; + + /// @brief Return @c true if this vector is equivalent to the given vector + /// to within the specified tolerance. + template + bool eq(const Vector& other, + ValueType eps = Tolerance::value()) const; + + /// Return a string representation of this vector. + std::string str() const; + + //@{ + /// @brief Return the value of this vector's ith element. + inline T& at(SizeType i) { return mData[i]; } + inline const T& at(SizeType i) const { return mData[i]; } + inline T& operator[](SizeType i) { return this->at(i); } + inline const T& operator[](SizeType i) const { return this->at(i); } + //@} + + //@{ + /// @brief Return a pointer to this vector's elements. + inline T* data() { return mData; } + inline const T* data() const { return mData; } + inline const T* constData() const { return mData; } + //@} + +private: + // Functor for use with tbb::parallel_for() + template struct ScaleOp; + struct DeterministicDotProductOp; + // Functors for use with tbb::parallel_reduce() + template struct EqOp; + struct InfNormOp; + struct IsFiniteOp; + + T* mData; + SizeType mSize; +}; + +using VectorS = Vector; +using VectorD = Vector; + + +//////////////////////////////////////// + + +/// @brief Sparse, square matrix representing a 3D stencil operator of size @a STENCIL_SIZE +/// @details The implementation is a variation on compressed row storage (CRS). +template +class SparseStencilMatrix +{ +public: + using ValueType = ValueType_; + using VectorType = Vector; + using Ptr = SharedPtr; + + class ConstValueIter; + class ConstRow; + class RowEditor; + + static const ValueType sZeroValue; + + /// Construct an @a n x @a n matrix with at most @a STENCIL_SIZE nonzero elements per row. + SparseStencilMatrix(SizeType n); + + /// Deep copy the given matrix. + SparseStencilMatrix(const SparseStencilMatrix&); + + //@{ + /// Return the number of rows in this matrix. + SizeType numRows() const { return mNumRows; } + SizeType size() const { return mNumRows; } + //@} + + /// @brief Set the value at the given coordinates. + /// @warning It is not safe to set values in the same row simultaneously + /// from multiple threads. + void setValue(SizeType row, SizeType col, const ValueType&); + + //@{ + /// @brief Return the value at the given coordinates. + /// @warning It is not safe to get values from a row while another thread + /// is setting values in that row. + const ValueType& getValue(SizeType row, SizeType col) const; + const ValueType& operator()(SizeType row, SizeType col) const; + //@} + + /// Return a read-only view onto the given row of this matrix. + ConstRow getConstRow(SizeType row) const; + + /// Return a read/write view onto the given row of this matrix. + RowEditor getRowEditor(SizeType row); + + //@{ + /// @brief Multiply all elements in the matrix by @a s; + template void scale(const Scalar& s); + template + SparseStencilMatrix& operator*=(const Scalar& s) { this->scale(s); return *this; } + //@} + + /// @brief Multiply this matrix by @a inVec and return the result in @a resultVec. + /// @throw ArithmeticError if either @a inVec or @a resultVec is not of size @e N, + /// where @e N x @e N is the size of this matrix. + template + void vectorMultiply(const Vector& inVec, Vector& resultVec) const; + + /// @brief Multiply this matrix by the vector represented by the array @a inVec + /// and return the result in @a resultVec. + /// @warning Both @a inVec and @a resultVec must have at least @e N elements, + /// where @e N x @e N is the size of this matrix. + template + void vectorMultiply(const VecValueType* inVec, VecValueType* resultVec) const; + + /// @brief Return @c true if this matrix is equivalent to the given matrix + /// to within the specified tolerance. + template + bool eq(const SparseStencilMatrix& other, + ValueType eps = Tolerance::value()) const; + + /// Return @c true if every element of this matrix has a finite value. + bool isFinite() const; + + /// Return a string representation of this matrix. + std::string str() const; + +private: + struct RowData { + RowData(ValueType* v, SizeType* c, SizeType& s): mVals(v), mCols(c), mSize(s) {} + ValueType* mVals; SizeType* mCols; SizeType& mSize; + }; + + struct ConstRowData { + ConstRowData(const ValueType* v, const SizeType* c, const SizeType& s): + mVals(v), mCols(c), mSize(s) {} + const ValueType* mVals; const SizeType* mCols; const SizeType& mSize; + }; + + /// Base class for row accessors + template + class RowBase + { + public: + using DataType = DataType_; + + static SizeType capacity() { return STENCIL_SIZE; } + + RowBase(const DataType& data): mData(data) {} + + bool empty() const { return (mData.mSize == 0); } + const SizeType& size() const { return mData.mSize; } + + const ValueType& getValue(SizeType columnIdx, bool& active) const; + const ValueType& getValue(SizeType columnIdx) const; + + /// Return an iterator over the stored values in this row. + ConstValueIter cbegin() const; + + /// @brief Return @c true if this row is equivalent to the given row + /// to within the specified tolerance. + template + bool eq(const RowBase& other, + ValueType eps = Tolerance::value()) const; + + /// @brief Return the dot product of this row with the first + /// @a vecSize elements of @a inVec. + /// @warning @a inVec must have at least @a vecSize elements. + template + VecValueType dot(const VecValueType* inVec, SizeType vecSize) const; + + /// Return the dot product of this row with the given vector. + template + VecValueType dot(const Vector& inVec) const; + + /// Return a string representation of this row. + std::string str() const; + + protected: + friend class ConstValueIter; + + const ValueType& value(SizeType i) const { return mData.mVals[i]; } + SizeType column(SizeType i) const { return mData.mCols[i]; } + + /// @brief Return the array index of the first column index that is + /// equal to or greater than the given column index. + /// @note If @a columnIdx is larger than any existing column index, + /// the return value will point beyond the end of the array. + SizeType find(SizeType columnIdx) const; + + DataType mData; + }; + + using ConstRowBase = RowBase; + +public: + /// Iterator over the stored values in a row of this matrix + class ConstValueIter + { + public: + const ValueType& operator*() const + { + if (mData.mSize == 0) return SparseStencilMatrix::sZeroValue; + return mData.mVals[mCursor]; + } + + SizeType column() const { return mData.mCols[mCursor]; } + + void increment() { mCursor++; } + ConstValueIter& operator++() { increment(); return *this; } + operator bool() const { return (mCursor < mData.mSize); } + + void reset() { mCursor = 0; } + + private: + friend class SparseStencilMatrix; + ConstValueIter(const RowData& d): mData(d.mVals, d.mCols, d.mSize), mCursor(0) {} + ConstValueIter(const ConstRowData& d): mData(d), mCursor(0) {} + + const ConstRowData mData; + SizeType mCursor; + }; + + + /// Read-only accessor to a row of this matrix + class ConstRow: public ConstRowBase + { + public: + ConstRow(const ValueType* valueHead, const SizeType* columnHead, const SizeType& rowSize); + }; // class ConstRow + + + /// Read/write accessor to a row of this matrix + class RowEditor: public RowBase<> + { + public: + RowEditor(ValueType* valueHead, SizeType* columnHead, SizeType& rowSize, SizeType colSize); + + /// Set the number of entries in this row to zero. + void clear(); + + /// @brief Set the value of the entry in the specified column. + /// @return the current number of entries stored in this row. + SizeType setValue(SizeType column, const ValueType& value); + + //@{ + /// @brief Scale all of the entries in this row. + template void scale(const Scalar&); + template + RowEditor& operator*=(const Scalar& s) { this->scale(s); return *this; } + //@} + + private: + const SizeType mNumColumns; // used only for bounds checking + }; // class RowEditor + +private: + // Functors for use with tbb::parallel_for() + struct MatrixCopyOp; + template struct VecMultOp; + template struct RowScaleOp; + + // Functors for use with tbb::parallel_reduce() + struct IsFiniteOp; + template struct EqOp; + + const SizeType mNumRows; + std::unique_ptr mValueArray; + std::unique_ptr mColumnIdxArray; + std::unique_ptr mRowSizeArray; +}; // class SparseStencilMatrix + + +//////////////////////////////////////// + + +/// Base class for conjugate gradient preconditioners +template +class Preconditioner +{ +public: + using ValueType = T; + using Ptr = SharedPtr; + + template Preconditioner(const SparseStencilMatrix&) {} + virtual ~Preconditioner() = default; + + virtual bool isValid() const { return true; } + + /// @brief Apply this preconditioner to a residue vector: + /// @e z = M−1r + /// @param r residue vector + /// @param[out] z preconditioned residue vector + virtual void apply(const Vector& r, Vector& z) = 0; +}; + + +//////////////////////////////////////// + + +namespace internal { + +// Functor for use with tbb::parallel_for() to copy data from one array to another +template +struct CopyOp +{ + CopyOp(const T* from_, T* to_): from(from_), to(to_) {} + + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) to[n] = from[n]; + } + + const T* from; + T* to; +}; + + +// Functor for use with tbb::parallel_for() to fill an array with a constant value +template +struct FillOp +{ + FillOp(T* data_, const T& val_): data(data_), val(val_) {} + + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) data[n] = val; + } + + T* data; + const T val; +}; + + +// Functor for use with tbb::parallel_for() that computes a * x + y +template +struct LinearOp +{ + LinearOp(const T& a_, const T* x_, const T* y_, T* out_): a(a_), x(x_), y(y_), out(out_) {} + + void operator()(const SizeRange& range) const { + if (isExactlyEqual(a, T(1))) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) out[n] = x[n] + y[n]; + } else if (isExactlyEqual(a, T(-1))) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) out[n] = -x[n] + y[n]; + } else { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) out[n] = a * x[n] + y[n]; + } + } + + const T a, *x, *y; + T* out; +}; + +} // namespace internal + + +//////////////////////////////////////// + + +inline std::ostream& +operator<<(std::ostream& os, const State& state) +{ + os << (state.success ? "succeeded with " : "") + << "rel. err. " << state.relativeError << ", abs. err. " << state.absoluteError + << " after " << state.iterations << " iteration" << (state.iterations == 1 ? "" : "s"); + return os; +} + + +//////////////////////////////////////// + + +template +inline +Vector::Vector(const Vector& other): mData(new T[other.mSize]), mSize(other.mSize) +{ + tbb::parallel_for(SizeRange(0, mSize), + internal::CopyOp(/*from=*/other.mData, /*to=*/mData)); +} + + +template +inline +Vector& Vector::operator=(const Vector& other) +{ + // Update the internal storage to the correct size + + if (mSize != other.mSize) { + mSize = other.mSize; + delete[] mData; + mData = new T[mSize]; + } + + // Deep copy the data + tbb::parallel_for(SizeRange(0, mSize), + internal::CopyOp(/*from=*/other.mData, /*to=*/mData)); + + return *this; +} + + +template +inline void +Vector::resize(SizeType n) +{ + if (n != mSize) { + if (mData) delete[] mData; + mData = new T[n]; + mSize = n; + } +} + + +template +inline void +Vector::fill(const ValueType& value) +{ + tbb::parallel_for(SizeRange(0, mSize), internal::FillOp(mData, value)); +} + + +template +template +struct Vector::ScaleOp +{ + ScaleOp(T* data_, const Scalar& s_): data(data_), s(s_) {} + + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) data[n] *= s; + } + + T* data; + const Scalar s; +}; + + +template +template +inline void +Vector::scale(const Scalar& s) +{ + tbb::parallel_for(SizeRange(0, mSize), ScaleOp(mData, s)); +} + + +template +struct Vector::DeterministicDotProductOp +{ + DeterministicDotProductOp(const T* a_, const T* b_, + const SizeType binCount_, const SizeType arraySize_, T* reducetmp_): + a(a_), b(b_), binCount(binCount_), arraySize(arraySize_), reducetmp(reducetmp_) {} + + void operator()(const SizeRange& range) const + { + const SizeType binSize = arraySize / binCount; + + // Iterate over bins (array segments) + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + const SizeType begin = n * binSize; + const SizeType end = (n == binCount-1) ? arraySize : begin + binSize; + + // Compute the partial sum for this array segment + T sum = zeroVal(); + for (SizeType i = begin; i < end; ++i) { sum += a[i] * b[i]; } + // Store the partial sum + reducetmp[n] = sum; + } + } + + + const T* a; + const T* b; + const SizeType binCount; + const SizeType arraySize; + T* reducetmp; +}; + +template +inline T +Vector::dot(const Vector& other) const +{ + assert(this->size() == other.size()); + + const T* aData = this->data(); + const T* bData = other.data(); + + SizeType arraySize = this->size(); + + T result = zeroVal(); + + if (arraySize < 1024) { + + // Compute the dot product in serial for small arrays + + for (SizeType n = 0; n < arraySize; ++n) { + result += aData[n] * bData[n]; + } + + } else { + + // Compute the dot product by segmenting the arrays into + // a predetermined number of sub arrays in parallel and + // accumulate the finial result in series. + + const SizeType binCount = 100; + T partialSums[100]; + + tbb::parallel_for(SizeRange(0, binCount), + DeterministicDotProductOp(aData, bData, binCount, arraySize, partialSums)); + + for (SizeType n = 0; n < binCount; ++n) { + result += partialSums[n]; + } + } + + return result; +} + + +template +struct Vector::InfNormOp +{ + InfNormOp(const T* data_): data(data_) {} + + T operator()(const SizeRange& range, T maxValue) const + { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + maxValue = Max(maxValue, Abs(data[n])); + } + return maxValue; + } + + const T* data; +}; + + +template +inline T +Vector::infNorm() const +{ + // Parallelize over the elements of this vector. + T result = tbb::parallel_reduce(SizeRange(0, this->size()), /*seed=*/zeroVal(), + InfNormOp(this->data()), /*join=*/[](T max1, T max2) { return Max(max1, max2); }); + return result; +} + + +template +struct Vector::IsFiniteOp +{ + IsFiniteOp(const T* data_): data(data_) {} + + bool operator()(const SizeRange& range, bool finite) const + { + if (finite) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + if (!std::isfinite(data[n])) return false; + } + } + return finite; + } + + const T* data; +}; + + +template +inline bool +Vector::isFinite() const +{ + // Parallelize over the elements of this vector. + bool finite = tbb::parallel_reduce(SizeRange(0, this->size()), /*seed=*/true, + IsFiniteOp(this->data()), + /*join=*/[](bool finite1, bool finite2) { return (finite1 && finite2); }); + return finite; +} + + +template +template +struct Vector::EqOp +{ + EqOp(const T* a_, const OtherValueType* b_, T e): a(a_), b(b_), eps(e) {} + + bool operator()(const SizeRange& range, bool equal) const + { + if (equal) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + if (!isApproxEqual(a[n], b[n], eps)) return false; + } + } + return equal; + } + + const T* a; + const OtherValueType* b; + const T eps; +}; + + +template +template +inline bool +Vector::eq(const Vector& other, ValueType eps) const +{ + if (this->size() != other.size()) return false; + bool equal = tbb::parallel_reduce(SizeRange(0, this->size()), /*seed=*/true, + EqOp(this->data(), other.data(), eps), + /*join=*/[](bool eq1, bool eq2) { return (eq1 && eq2); }); + return equal; +} + + +template +inline std::string +Vector::str() const +{ + std::ostringstream ostr; + ostr << "["; + std::string sep; + for (SizeType n = 0, N = this->size(); n < N; ++n) { + ostr << sep << (*this)[n]; + sep = ", "; + } + ostr << "]"; + return ostr.str(); +} + + +//////////////////////////////////////// + + +template +const ValueType SparseStencilMatrix::sZeroValue = zeroVal(); + + +template +inline +SparseStencilMatrix::SparseStencilMatrix(SizeType numRows) + : mNumRows(numRows) + , mValueArray(new ValueType[mNumRows * STENCIL_SIZE]) + , mColumnIdxArray(new SizeType[mNumRows * STENCIL_SIZE]) + , mRowSizeArray(new SizeType[mNumRows]) +{ + // Initialize the matrix to a null state by setting the size of each row to zero. + tbb::parallel_for(SizeRange(0, mNumRows), + internal::FillOp(mRowSizeArray.get(), /*value=*/0)); +} + + +template +struct SparseStencilMatrix::MatrixCopyOp +{ + MatrixCopyOp(const SparseStencilMatrix& from_, SparseStencilMatrix& to_): + from(&from_), to(&to_) {} + + void operator()(const SizeRange& range) const + { + const ValueType* fromVal = from->mValueArray.get(); + const SizeType* fromCol = from->mColumnIdxArray.get(); + ValueType* toVal = to->mValueArray.get(); + SizeType* toCol = to->mColumnIdxArray.get(); + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + toVal[n] = fromVal[n]; + toCol[n] = fromCol[n]; + } + } + + const SparseStencilMatrix* from; SparseStencilMatrix* to; +}; + + +template +inline +SparseStencilMatrix::SparseStencilMatrix(const SparseStencilMatrix& other) + : mNumRows(other.mNumRows) + , mValueArray(new ValueType[mNumRows * STENCIL_SIZE]) + , mColumnIdxArray(new SizeType[mNumRows * STENCIL_SIZE]) + , mRowSizeArray(new SizeType[mNumRows]) +{ + SizeType size = mNumRows * STENCIL_SIZE; + + // Copy the value and column index arrays from the other matrix to this matrix. + tbb::parallel_for(SizeRange(0, size), MatrixCopyOp(/*from=*/other, /*to=*/*this)); + + // Copy the row size array from the other matrix to this matrix. + tbb::parallel_for(SizeRange(0, mNumRows), + internal::CopyOp(/*from=*/other.mRowSizeArray.get(), /*to=*/mRowSizeArray.get())); +} + + +template +inline void +SparseStencilMatrix::setValue(SizeType row, SizeType col, + const ValueType& val) +{ + assert(row < mNumRows); + this->getRowEditor(row).setValue(col, val); +} + + +template +inline const ValueType& +SparseStencilMatrix::getValue(SizeType row, SizeType col) const +{ + assert(row < mNumRows); + return this->getConstRow(row).getValue(col); +} + + +template +inline const ValueType& +SparseStencilMatrix::operator()(SizeType row, SizeType col) const +{ + return this->getValue(row,col); +} + + +template +template +struct SparseStencilMatrix::RowScaleOp +{ + RowScaleOp(SparseStencilMatrix& m, const Scalar& s_): mat(&m), s(s_) {} + + void operator()(const SizeRange& range) const + { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + RowEditor row = mat->getRowEditor(n); + row.scale(s); + } + } + + SparseStencilMatrix* mat; + const Scalar s; +}; + + +template +template +inline void +SparseStencilMatrix::scale(const Scalar& s) +{ + // Parallelize over the rows in the matrix. + tbb::parallel_for(SizeRange(0, mNumRows), RowScaleOp(*this, s)); +} + + +template +template +struct SparseStencilMatrix::VecMultOp +{ + VecMultOp(const SparseStencilMatrix& m, const VecValueType* i, VecValueType* o): + mat(&m), in(i), out(o) {} + + void operator()(const SizeRange& range) const + { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + ConstRow row = mat->getConstRow(n); + out[n] = row.dot(in, mat->numRows()); + } + } + + const SparseStencilMatrix* mat; + const VecValueType* in; + VecValueType* out; +}; + + +template +template +inline void +SparseStencilMatrix::vectorMultiply( + const Vector& inVec, Vector& resultVec) const +{ + if (inVec.size() != mNumRows) { + OPENVDB_THROW(ArithmeticError, "matrix and input vector have incompatible sizes (" + << mNumRows << "x" << mNumRows << " vs. " << inVec.size() << ")"); + } + if (resultVec.size() != mNumRows) { + OPENVDB_THROW(ArithmeticError, "matrix and result vector have incompatible sizes (" + << mNumRows << "x" << mNumRows << " vs. " << resultVec.size() << ")"); + } + + vectorMultiply(inVec.data(), resultVec.data()); +} + + +template +template +inline void +SparseStencilMatrix::vectorMultiply( + const VecValueType* inVec, VecValueType* resultVec) const +{ + // Parallelize over the rows in the matrix. + tbb::parallel_for(SizeRange(0, mNumRows), + VecMultOp(*this, inVec, resultVec)); +} + + +template +template +struct SparseStencilMatrix::EqOp +{ + EqOp(const SparseStencilMatrix& a_, + const SparseStencilMatrix& b_, ValueType e): + a(&a_), b(&b_), eps(e) {} + + bool operator()(const SizeRange& range, bool equal) const + { + if (equal) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + if (!a->getConstRow(n).eq(b->getConstRow(n), eps)) return false; + } + } + return equal; + } + + const SparseStencilMatrix* a; + const SparseStencilMatrix* b; + const ValueType eps; +}; + + +template +template +inline bool +SparseStencilMatrix::eq( + const SparseStencilMatrix& other, ValueType eps) const +{ + if (this->numRows() != other.numRows()) return false; + bool equal = tbb::parallel_reduce(SizeRange(0, this->numRows()), /*seed=*/true, + EqOp(*this, other, eps), + /*join=*/[](bool eq1, bool eq2) { return (eq1 && eq2); }); + return equal; +} + + +template +struct SparseStencilMatrix::IsFiniteOp +{ + IsFiniteOp(const SparseStencilMatrix& m): mat(&m) {} + + bool operator()(const SizeRange& range, bool finite) const + { + if (finite) { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + const ConstRow row = mat->getConstRow(n); + for (ConstValueIter it = row.cbegin(); it; ++it) { + if (!std::isfinite(*it)) return false; + } + } + } + return finite; + } + + const SparseStencilMatrix* mat; +}; + + +template +inline bool +SparseStencilMatrix::isFinite() const +{ + // Parallelize over the rows of this matrix. + bool finite = tbb::parallel_reduce(SizeRange(0, this->numRows()), /*seed=*/true, + IsFiniteOp(*this), /*join=*/[](bool finite1, bool finite2) { return (finite1&&finite2); }); + return finite; +} + + +template +inline std::string +SparseStencilMatrix::str() const +{ + std::ostringstream ostr; + for (SizeType n = 0, N = this->size(); n < N; ++n) { + ostr << n << ": " << this->getConstRow(n).str() << "\n"; + } + return ostr.str(); +} + + +template +inline typename SparseStencilMatrix::RowEditor +SparseStencilMatrix::getRowEditor(SizeType i) +{ + assert(i < mNumRows); + const SizeType head = i * STENCIL_SIZE; + return RowEditor(&mValueArray[head], &mColumnIdxArray[head], mRowSizeArray[i], mNumRows); +} + + +template +inline typename SparseStencilMatrix::ConstRow +SparseStencilMatrix::getConstRow(SizeType i) const +{ + assert(i < mNumRows); + const SizeType head = i * STENCIL_SIZE; // index for this row into main storage + return ConstRow(&mValueArray[head], &mColumnIdxArray[head], mRowSizeArray[i]); +} + + +template +template +inline SizeType +SparseStencilMatrix::RowBase::find(SizeType columnIdx) const +{ + if (this->empty()) return mData.mSize; + + // Get a pointer to the first column index that is equal to or greater than the given index. + // (This assumes that the data is sorted by column.) + const SizeType* colPtr = std::lower_bound(mData.mCols, mData.mCols + mData.mSize, columnIdx); + // Return the offset of the pointer from the beginning of the array. + return static_cast(colPtr - mData.mCols); +} + + +template +template +inline const ValueType& +SparseStencilMatrix::RowBase::getValue( + SizeType columnIdx, bool& active) const +{ + active = false; + SizeType idx = this->find(columnIdx); + if (idx < this->size() && this->column(idx) == columnIdx) { + active = true; + return this->value(idx); + } + return SparseStencilMatrix::sZeroValue; +} + +template +template +inline const ValueType& +SparseStencilMatrix::RowBase::getValue(SizeType columnIdx) const +{ + SizeType idx = this->find(columnIdx); + if (idx < this->size() && this->column(idx) == columnIdx) { + return this->value(idx); + } + return SparseStencilMatrix::sZeroValue; +} + + +template +template +inline typename SparseStencilMatrix::ConstValueIter +SparseStencilMatrix::RowBase::cbegin() const +{ + return ConstValueIter(mData); +} + + +template +template +template +inline bool +SparseStencilMatrix::RowBase::eq( + const RowBase& other, ValueType eps) const +{ + if (this->size() != other.size()) return false; + for (ConstValueIter it = cbegin(), oit = other.cbegin(); it || oit; ++it, ++oit) { + if (it.column() != oit.column()) return false; + if (!isApproxEqual(*it, *oit, eps)) return false; + } + return true; +} + + +template +template +template +inline VecValueType +SparseStencilMatrix::RowBase::dot( + const VecValueType* inVec, SizeType vecSize) const +{ + VecValueType result = zeroVal(); + for (SizeType idx = 0, N = std::min(vecSize, this->size()); idx < N; ++idx) { + result += static_cast(this->value(idx) * inVec[this->column(idx)]); + } + return result; +} + +template +template +template +inline VecValueType +SparseStencilMatrix::RowBase::dot( + const Vector& inVec) const +{ + return dot(inVec.data(), inVec.size()); +} + + +template +template +inline std::string +SparseStencilMatrix::RowBase::str() const +{ + std::ostringstream ostr; + std::string sep; + for (SizeType n = 0, N = this->size(); n < N; ++n) { + ostr << sep << "(" << this->column(n) << ", " << this->value(n) << ")"; + sep = ", "; + } + return ostr.str(); +} + + +template +inline +SparseStencilMatrix::ConstRow::ConstRow( + const ValueType* valueHead, const SizeType* columnHead, const SizeType& rowSize): + ConstRowBase(ConstRowData(const_cast(valueHead), + const_cast(columnHead), const_cast(rowSize))) +{ +} + + +template +inline +SparseStencilMatrix::RowEditor::RowEditor( + ValueType* valueHead, SizeType* columnHead, SizeType& rowSize, SizeType colSize): + RowBase<>(RowData(valueHead, columnHead, rowSize)), mNumColumns(colSize) +{ +} + + +template +inline void +SparseStencilMatrix::RowEditor::clear() +{ + // Note: since mSize is a reference, this modifies the underlying matrix. + RowBase<>::mData.mSize = 0; +} + + +template +inline SizeType +SparseStencilMatrix::RowEditor::setValue( + SizeType column, const ValueType& value) +{ + assert(column < mNumColumns); + + RowData& data = RowBase<>::mData; + + // Get the offset of the first column index that is equal to or greater than + // the column to be modified. + SizeType offset = this->find(column); + + if (offset < data.mSize && data.mCols[offset] == column) { + // If the column already exists, just update its value. + data.mVals[offset] = value; + return data.mSize; + } + + // Check that it is safe to add a new column. + assert(data.mSize < this->capacity()); + + if (offset >= data.mSize) { + // The new column's index is larger than any existing index. Append the new column. + data.mVals[data.mSize] = value; + data.mCols[data.mSize] = column; + } else { + // Insert the new column at the computed offset after shifting subsequent columns. + for (SizeType i = data.mSize; i > offset; --i) { + data.mVals[i] = data.mVals[i - 1]; + data.mCols[i] = data.mCols[i - 1]; + } + data.mVals[offset] = value; + data.mCols[offset] = column; + } + ++data.mSize; + + return data.mSize; +} + + +template +template +inline void +SparseStencilMatrix::RowEditor::scale(const Scalar& s) +{ + for (int idx = 0, N = this->size(); idx < N; ++idx) { + RowBase<>::mData.mVals[idx] *= s; + } +} + + +//////////////////////////////////////// + + +/// Diagonal preconditioner +template +class JacobiPreconditioner: public Preconditioner +{ +private: + struct InitOp; + struct ApplyOp; + +public: + using ValueType = typename MatrixType::ValueType; + using BaseType = Preconditioner; + using VectorType = Vector; + using Ptr = SharedPtr; + + JacobiPreconditioner(const MatrixType& A): BaseType(A), mDiag(A.numRows()) + { + // Initialize vector mDiag with the values from the matrix diagonal. + tbb::parallel_for(SizeRange(0, A.numRows()), InitOp(A, mDiag.data())); + } + + ~JacobiPreconditioner() override = default; + + void apply(const Vector& r, Vector& z) override + { + const SizeType size = mDiag.size(); + + assert(r.size() == z.size()); + assert(r.size() == size); + + tbb::parallel_for(SizeRange(0, size), ApplyOp(mDiag.data(), r.data(), z.data())); + } + + /// Return @c true if all values along the diagonal are finite. + bool isFinite() const { return mDiag.isFinite(); } + +private: + // Functor for use with tbb::parallel_for() + struct InitOp + { + InitOp(const MatrixType& m, ValueType* v): mat(&m), vec(v) {} + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + const ValueType val = mat->getValue(n, n); + assert(!isApproxZero(val, ValueType(0.0001))); + vec[n] = static_cast(1.0 / val); + } + } + const MatrixType* mat; ValueType* vec; + }; + + // Functor for use with tbb::parallel_reduce() + struct ApplyOp + { + ApplyOp(const ValueType* x_, const ValueType* y_, ValueType* out_): + x(x_), y(y_), out(out_) {} + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) out[n] = x[n] * y[n]; + } + const ValueType *x, *y; ValueType* out; + }; + + // The Jacobi preconditioner is a diagonal matrix + VectorType mDiag; +}; // class JacobiPreconditioner + + +/// Preconditioner using incomplete Cholesky factorization +template +class IncompleteCholeskyPreconditioner: public Preconditioner +{ +private: + struct CopyToLowerOp; + struct TransposeOp; + +public: + using ValueType = typename MatrixType::ValueType; + using BaseType = Preconditioner; + using VectorType = Vector; + using Ptr = SharedPtr; + using TriangularMatrix = SparseStencilMatrix; + using TriangleConstRow = typename TriangularMatrix::ConstRow; + using TriangleRowEditor = typename TriangularMatrix::RowEditor; + + IncompleteCholeskyPreconditioner(const MatrixType& matrix) + : BaseType(matrix) + , mLowerTriangular(matrix.numRows()) + , mUpperTriangular(matrix.numRows()) + , mTempVec(matrix.numRows()) + { + // Size of matrix + const SizeType numRows = mLowerTriangular.numRows(); + + // Copy the upper triangular part to the lower triangular part. + tbb::parallel_for(SizeRange(0, numRows), CopyToLowerOp(matrix, mLowerTriangular)); + + // Build the Incomplete Cholesky Matrix + // + // Algorithm: + // + // for (k = 0; k < size; ++k) { + // A(k,k) = sqrt(A(k,k)); + // for (i = k +1, i < size; ++i) { + // if (A(i,k) == 0) continue; + // A(i,k) = A(i,k) / A(k,k); + // } + // for (j = k+1; j < size; ++j) { + // for (i = j; i < size; ++i) { + // if (A(i,j) == 0) continue; + // A(i,j) -= A(i,k)*A(j,k); + // } + // } + // } + + mPassedCompatibilityCondition = true; + + for (SizeType k = 0; k < numRows; ++k) { + + TriangleConstRow crow_k = mLowerTriangular.getConstRow(k); + ValueType diagonalValue = crow_k.getValue(k); + + // Test if the matrix build has failed. + if (diagonalValue < 1.e-5) { + mPassedCompatibilityCondition = false; + break; + } + + diagonalValue = Sqrt(diagonalValue); + + TriangleRowEditor row_k = mLowerTriangular.getRowEditor(k); + row_k.setValue(k, diagonalValue); + + // Exploit the fact that the matrix is symmetric. + typename MatrixType::ConstRow srcRow = matrix.getConstRow(k); + typename MatrixType::ConstValueIter citer = srcRow.cbegin(); + for ( ; citer; ++citer) { + SizeType ii = citer.column(); + if (ii < k+1) continue; // look above diagonal + + TriangleRowEditor row_ii = mLowerTriangular.getRowEditor(ii); + + row_ii.setValue(k, *citer / diagonalValue); + } + + // for (j = k+1; j < size; ++j) replaced by row iter below + citer.reset(); // k,j entries + for ( ; citer; ++citer) { + SizeType j = citer.column(); + if (j < k+1) continue; + + TriangleConstRow row_j = mLowerTriangular.getConstRow(j); + ValueType a_jk = row_j.getValue(k); // a_jk is non zero if a_kj is non zero + + // Entry (i,j) is non-zero if matrix(j,i) is nonzero + + typename MatrixType::ConstRow mask = matrix.getConstRow(j); + typename MatrixType::ConstValueIter maskIter = mask.cbegin(); + for ( ; maskIter; ++maskIter) { + SizeType i = maskIter.column(); + if (i < j) continue; + + TriangleConstRow crow_i = mLowerTriangular.getConstRow(i); + ValueType a_ij = crow_i.getValue(j); + ValueType a_ik = crow_i.getValue(k); + TriangleRowEditor row_i = mLowerTriangular.getRowEditor(i); + a_ij -= a_ik * a_jk; + + row_i.setValue(j, a_ij); + } + } + } + + // Build the transpose of the IC matrix: mUpperTriangular + tbb::parallel_for(SizeRange(0, numRows), + TransposeOp(matrix, mLowerTriangular, mUpperTriangular)); + } + + ~IncompleteCholeskyPreconditioner() override = default; + + bool isValid() const override { return mPassedCompatibilityCondition; } + + void apply(const Vector& rVec, Vector& zVec) override + { + if (!mPassedCompatibilityCondition) { + OPENVDB_THROW(ArithmeticError, "invalid Cholesky decomposition"); + } + + // Solve mUpperTriangular * mLowerTriangular * rVec = zVec; + + SizeType size = mLowerTriangular.numRows(); + + zVec.fill(zeroVal()); + ValueType* zData = zVec.data(); + + if (size == 0) return; + + assert(rVec.size() == size); + assert(zVec.size() == size); + + // Allocate a temp vector + mTempVec.fill(zeroVal()); + ValueType* tmpData = mTempVec.data(); + const ValueType* rData = rVec.data(); + + // Solve mLowerTriangular * tmp = rVec; + for (SizeType i = 0; i < size; ++i) { + typename TriangularMatrix::ConstRow row = mLowerTriangular.getConstRow(i); + ValueType diagonal = row.getValue(i); + ValueType dot = row.dot(mTempVec); + tmpData[i] = (rData[i] - dot) / diagonal; + if (!std::isfinite(tmpData[i])) { + OPENVDB_LOG_DEBUG_RUNTIME("1 diagonal was " << diagonal); + OPENVDB_LOG_DEBUG_RUNTIME("1a diagonal " << row.getValue(i)); + } + } + + // Solve mUpperTriangular * zVec = tmp; + for (SizeType ii = 0; ii < size; ++ii) { + SizeType i = size - 1 - ii; + typename TriangularMatrix::ConstRow row = mUpperTriangular.getConstRow(i); + ValueType diagonal = row.getValue(i); + ValueType dot = row.dot(zVec); + zData[i] = (tmpData[i] - dot) / diagonal; + if (!std::isfinite(zData[i])) { + OPENVDB_LOG_DEBUG_RUNTIME("2 diagonal was " << diagonal); + } + } + } + + const TriangularMatrix& lowerMatrix() const { return mLowerTriangular; } + const TriangularMatrix& upperMatrix() const { return mUpperTriangular; } + +private: + // Functor for use with tbb::parallel_for() + struct CopyToLowerOp + { + CopyToLowerOp(const MatrixType& m, TriangularMatrix& l): mat(&m), lower(&l) {} + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + typename TriangularMatrix::RowEditor outRow = lower->getRowEditor(n); + outRow.clear(); + typename MatrixType::ConstRow inRow = mat->getConstRow(n); + for (typename MatrixType::ConstValueIter it = inRow.cbegin(); it; ++it) { + if (it.column() > n) continue; // skip above diagonal + outRow.setValue(it.column(), *it); + } + } + } + const MatrixType* mat; TriangularMatrix* lower; + }; + + // Functor for use with tbb::parallel_for() + struct TransposeOp + { + TransposeOp(const MatrixType& m, const TriangularMatrix& l, TriangularMatrix& u): + mat(&m), lower(&l), upper(&u) {} + void operator()(const SizeRange& range) const { + for (SizeType n = range.begin(), N = range.end(); n < N; ++n) { + typename TriangularMatrix::RowEditor outRow = upper->getRowEditor(n); + outRow.clear(); + // Use the fact that matrix is symmetric. + typename MatrixType::ConstRow inRow = mat->getConstRow(n); + for (typename MatrixType::ConstValueIter it = inRow.cbegin(); it; ++it) { + const SizeType column = it.column(); + if (column < n) continue; // only set upper triangle + outRow.setValue(column, lower->getValue(column, n)); + } + } + } + const MatrixType* mat; const TriangularMatrix* lower; TriangularMatrix* upper; + }; + + TriangularMatrix mLowerTriangular; + TriangularMatrix mUpperTriangular; + Vector mTempVec; + bool mPassedCompatibilityCondition; +}; // class IncompleteCholeskyPreconditioner + + +//////////////////////////////////////// + + +namespace internal { + +/// Compute @e ax + @e y. +template +inline void +axpy(const T& a, const T* xVec, const T* yVec, T* resultVec, SizeType size) +{ + tbb::parallel_for(SizeRange(0, size), LinearOp(a, xVec, yVec, resultVec)); +} + +/// Compute @e ax + @e y. +template +inline void +axpy(const T& a, const Vector& xVec, const Vector& yVec, Vector& result) +{ + assert(xVec.size() == yVec.size()); + assert(xVec.size() == result.size()); + axpy(a, xVec.data(), yVec.data(), result.data(), xVec.size()); +} + + +/// Compute @e r = @e b − @e Ax. +template +inline void +computeResidual(const MatrixOperator& A, const VecValueType* x, + const VecValueType* b, VecValueType* r) +{ + // Compute r = A * x. + A.vectorMultiply(x, r); + // Compute r = b - r. + tbb::parallel_for(SizeRange(0, A.numRows()), LinearOp(-1.0, r, b, r)); +} + +/// Compute @e r = @e b − @e Ax. +template +inline void +computeResidual(const MatrixOperator& A, const Vector& x, const Vector& b, Vector& r) +{ + assert(x.size() == b.size()); + assert(x.size() == r.size()); + assert(x.size() == A.numRows()); + + computeResidual(A, x.data(), b.data(), r.data()); +} + +} // namespace internal + + +//////////////////////////////////////// + + +template +inline State +solve( + const PositiveDefMatrix& Amat, + const Vector& bVec, + Vector& xVec, + Preconditioner& precond, + const State& termination) +{ + util::NullInterrupter interrupter; + return solve(Amat, bVec, xVec, precond, interrupter, termination); +} + + +template +inline State +solve( + const PositiveDefMatrix& Amat, + const Vector& bVec, + Vector& xVec, + Preconditioner& precond, + Interrupter& interrupter, + const State& termination) +{ + using ValueType = typename PositiveDefMatrix::ValueType; + using VectorType = Vector; + + State result; + result.success = false; + result.iterations = 0; + result.relativeError = 0.0; + result.absoluteError = 0.0; + + const SizeType size = Amat.numRows(); + if (size == 0) { + OPENVDB_LOG_WARN("pcg::solve(): matrix has dimension zero"); + return result; + } + if (size != bVec.size()) { + OPENVDB_THROW(ArithmeticError, "A and b have incompatible sizes" + << size << "x" << size << " vs. " << bVec.size() << ")"); + } + if (size != xVec.size()) { + OPENVDB_THROW(ArithmeticError, "A and x have incompatible sizes" + << size << "x" << size << " vs. " << xVec.size() << ")"); + } + + // Temp vectors + VectorType zVec(size); // transformed residual (M^-1 r) + VectorType pVec(size); // search direction + VectorType qVec(size); // A * p + + // Compute norm of B (the source) + const ValueType tmp = bVec.infNorm(); + const ValueType infNormOfB = isZero(tmp) ? ValueType(1) : tmp; + + // Compute rVec: residual = b - Ax. + VectorType rVec(size); // vector of residuals + + internal::computeResidual(Amat, xVec, bVec, rVec); + + assert(rVec.isFinite()); + + // Normalize the residual norm with the source norm and look for early out. + result.absoluteError = static_cast(rVec.infNorm()); + result.relativeError = static_cast(result.absoluteError / infNormOfB); + if (result.relativeError <= termination.relativeError) { + result.success = true; + return result; + } + + // Iterations of the CG solve + + ValueType rDotZPrev(1); // inner product of + + // Keep track of the minimum error to monitor convergence. + ValueType minL2Error = std::numeric_limits::max(); + ValueType l2Error; + + int iteration = 0; + for ( ; iteration < termination.iterations; ++iteration) { + + if (interrupter.wasInterrupted()) { + OPENVDB_THROW(RuntimeError, "conjugate gradient solver was interrupted"); + } + + OPENVDB_LOG_DEBUG_RUNTIME("pcg::solve() " << result); + + result.iterations = iteration + 1; + + // Apply preconditioner to residual + // z_{k} = M^-1 r_{k} + precond.apply(rVec, zVec); + + // + const ValueType rDotZ = rVec.dot(zVec); + assert(std::isfinite(rDotZ)); + + if (0 == iteration) { + // Initialize + pVec = zVec; + } else { + const ValueType beta = rDotZ / rDotZPrev; + // p = beta * p + z + internal::axpy(beta, pVec, zVec, /*result */pVec); + } + + // q_{k} = A p_{k} + Amat.vectorMultiply(pVec, qVec); + + // alpha = / + const ValueType pAp = pVec.dot(qVec); + assert(std::isfinite(pAp)); + + const ValueType alpha = rDotZ / pAp; + rDotZPrev = rDotZ; + + // x_{k} = x_{k-1} + alpha * p_{k} + internal::axpy(alpha, pVec, xVec, /*result=*/xVec); + + // r_{k} = r_{k-1} - alpha_{k-1} A p_{k} + internal::axpy(-alpha, qVec, rVec, /*result=*/rVec); + + // update tolerances + l2Error = rVec.l2Norm(); + minL2Error = Min(l2Error, minL2Error); + + result.absoluteError = static_cast(rVec.infNorm()); + result.relativeError = static_cast(result.absoluteError / infNormOfB); + + if (l2Error > 2 * minL2Error) { + // The solution started to diverge. + result.success = false; + break; + } + if (!std::isfinite(result.absoluteError)) { + // Total divergence of solution + result.success = false; + break; + } + if (result.absoluteError <= termination.absoluteError) { + // Convergence + result.success = true; + break; + } + if (result.relativeError <= termination.relativeError) { + // Convergence + result.success = true; + break; + } + } + OPENVDB_LOG_DEBUG_RUNTIME("pcg::solve() " << result); + + return result; +} + +} // namespace pcg +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_CONJGRADIENT_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Coord.h b/openvdb/math/Coord.h new file mode 100644 index 00000000..504b5e9a --- /dev/null +++ b/openvdb/math/Coord.h @@ -0,0 +1,600 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_COORD_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_COORD_HAS_BEEN_INCLUDED + +#include // for std::hash +#include // for std::min(), std::max() +#include // for std::array +#include +#include +#include +#include "Math.h" +#include "Vec3.h" + +namespace tbb { class split; } // forward declaration + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief Signed (x, y, z) 32-bit integer coordinates +class Coord +{ +public: + using Int32 = int32_t; + using Index32 = uint32_t; + using Vec3i = Vec3; + using Vec3I = Vec3; + + using ValueType = Int32; + using Limits = std::numeric_limits; + + Coord(): mVec{{0, 0, 0}} {} + explicit Coord(Int32 xyz): mVec{{xyz, xyz, xyz}} {} + Coord(Int32 x, Int32 y, Int32 z): mVec{{x, y, z}} {} + explicit Coord(const Vec3i& v): mVec{{v[0], v[1], v[2]}} {} + explicit Coord(const Vec3I& v): mVec{{Int32(v[0]), Int32(v[1]), Int32(v[2])}} {} + explicit Coord(const Int32* v): mVec{{v[0], v[1], v[2]}} {} + + /// @brief Return the smallest possible coordinate + static Coord min() { return Coord(Limits::min()); } + + /// @brief Return the largest possible coordinate + static Coord max() { return Coord(Limits::max()); } + + /// @brief Return @a xyz rounded to the closest integer coordinates + /// (cell centered conversion). + template static Coord round(const Vec3& xyz) + { + return Coord(Int32(Round(xyz[0])), Int32(Round(xyz[1])), Int32(Round(xyz[2]))); + } + /// @brief Return the largest integer coordinates that are not greater + /// than @a xyz (node centered conversion). + template static Coord floor(const Vec3& xyz) + { + return Coord(Int32(Floor(xyz[0])), Int32(Floor(xyz[1])), Int32(Floor(xyz[2]))); + } + + /// @brief Return the largest integer coordinates that are not greater + /// than @a xyz+1 (node centered conversion). + template static Coord ceil(const Vec3& xyz) + { + return Coord(Int32(Ceil(xyz[0])), Int32(Ceil(xyz[1])), Int32(Ceil(xyz[2]))); + } + + /// @brief Reset all three coordinates with the specified arguments + Coord& reset(Int32 x, Int32 y, Int32 z) + { + mVec[0] = x; + mVec[1] = y; + mVec[2] = z; + return *this; + } + /// @brief Reset all three coordinates with the same specified argument + Coord& reset(Int32 xyz) { return this->reset(xyz, xyz, xyz); } + + Coord& setX(Int32 x) { mVec[0] = x; return *this; } + Coord& setY(Int32 y) { mVec[1] = y; return *this; } + Coord& setZ(Int32 z) { mVec[2] = z; return *this; } + + Coord& offset(Int32 dx, Int32 dy, Int32 dz) + { + mVec[0] += dx; + mVec[1] += dy; + mVec[2] += dz; + return *this; + } + Coord& offset(Int32 n) { return this->offset(n, n, n); } + Coord offsetBy(Int32 dx, Int32 dy, Int32 dz) const + { + return Coord(mVec[0] + dx, mVec[1] + dy, mVec[2] + dz); + } + Coord offsetBy(Int32 n) const { return offsetBy(n, n, n); } + + Coord& operator+=(const Coord& rhs) + { + mVec[0] += rhs[0]; + mVec[1] += rhs[1]; + mVec[2] += rhs[2]; + return *this; + } + Coord& operator-=(const Coord& rhs) + { + mVec[0] -= rhs[0]; + mVec[1] -= rhs[1]; + mVec[2] -= rhs[2]; + return *this; + } + Coord operator+(const Coord& rhs) const + { + return Coord(mVec[0] + rhs[0], mVec[1] + rhs[1], mVec[2] + rhs[2]); + } + Coord operator-(const Coord& rhs) const + { + return Coord(mVec[0] - rhs[0], mVec[1] - rhs[1], mVec[2] - rhs[2]); + } + Coord operator-() const { return Coord(-mVec[0], -mVec[1], -mVec[2]); } + + Coord operator>> (size_t n) const { return Coord(mVec[0]>>n, mVec[1]>>n, mVec[2]>>n); } + Coord operator<< (size_t n) const { return Coord(mVec[0]<>=(size_t n) { mVec[0]>>=n; mVec[1]>>=n; mVec[2]>>=n; return *this; } + Coord operator& (Int32 n) const { return Coord(mVec[0] & n, mVec[1] & n, mVec[2] & n); } + Coord operator| (Int32 n) const { return Coord(mVec[0] | n, mVec[1] | n, mVec[2] | n); } + Coord& operator&= (Int32 n) { mVec[0]&=n; mVec[1]&=n; mVec[2]&=n; return *this; } + Coord& operator|= (Int32 n) { mVec[0]|=n; mVec[1]|=n; mVec[2]|=n; return *this; } + + Int32 x() const { return mVec[0]; } + Int32 y() const { return mVec[1]; } + Int32 z() const { return mVec[2]; } + Int32 operator[](size_t i) const { assert(i < 3); return mVec[i]; } + Int32& x() { return mVec[0]; } + Int32& y() { return mVec[1]; } + Int32& z() { return mVec[2]; } + Int32& operator[](size_t i) { assert(i < 3); return mVec[i]; } + + const Int32* data() const { return mVec.data(); } + Int32* data() { return mVec.data(); } + const Int32* asPointer() const { return mVec.data(); } + Int32* asPointer() { return mVec.data(); } + Vec3d asVec3d() const { return Vec3d(double(mVec[0]), double(mVec[1]), double(mVec[2])); } + Vec3s asVec3s() const { return Vec3s(float(mVec[0]), float(mVec[1]), float(mVec[2])); } + Vec3i asVec3i() const { return Vec3i(mVec.data()); } + Vec3I asVec3I() const { return Vec3I(Index32(mVec[0]), Index32(mVec[1]), Index32(mVec[2])); } + void asXYZ(Int32& x, Int32& y, Int32& z) const { x = mVec[0]; y = mVec[1]; z = mVec[2]; } + + bool operator==(const Coord& rhs) const + { + return (mVec[0] == rhs.mVec[0] && mVec[1] == rhs.mVec[1] && mVec[2] == rhs.mVec[2]); + } + bool operator!=(const Coord& rhs) const { return !(*this == rhs); } + + /// Lexicographic less than + bool operator<(const Coord& rhs) const + { + return this->x() < rhs.x() ? true : this->x() > rhs.x() ? false + : this->y() < rhs.y() ? true : this->y() > rhs.y() ? false + : this->z() < rhs.z() ? true : false; + } + /// Lexicographic less than or equal to + bool operator<=(const Coord& rhs) const + { + return this->x() < rhs.x() ? true : this->x() > rhs.x() ? false + : this->y() < rhs.y() ? true : this->y() > rhs.y() ? false + : this->z() <=rhs.z() ? true : false; + } + /// Lexicographic greater than + bool operator>(const Coord& rhs) const { return !(*this <= rhs); } + /// Lexicographic greater than or equal to + bool operator>=(const Coord& rhs) const { return !(*this < rhs); } + + /// Perform a component-wise minimum with the other Coord. + void minComponent(const Coord& other) + { + mVec[0] = std::min(mVec[0], other.mVec[0]); + mVec[1] = std::min(mVec[1], other.mVec[1]); + mVec[2] = std::min(mVec[2], other.mVec[2]); + } + + /// Perform a component-wise maximum with the other Coord. + void maxComponent(const Coord& other) + { + mVec[0] = std::max(mVec[0], other.mVec[0]); + mVec[1] = std::max(mVec[1], other.mVec[1]); + mVec[2] = std::max(mVec[2], other.mVec[2]); + } + + /// Return the component-wise minimum of the two Coords. + static inline Coord minComponent(const Coord& lhs, const Coord& rhs) + { + return Coord(std::min(lhs.x(), rhs.x()), + std::min(lhs.y(), rhs.y()), + std::min(lhs.z(), rhs.z())); + } + + /// Return the component-wise maximum of the two Coords. + static inline Coord maxComponent(const Coord& lhs, const Coord& rhs) + { + return Coord(std::max(lhs.x(), rhs.x()), + std::max(lhs.y(), rhs.y()), + std::max(lhs.z(), rhs.z())); + } + + /// Return true if any of the components of @a a are smaller than the + /// corresponding components of @a b. + static inline bool lessThan(const Coord& a, const Coord& b) + { + return (a[0] < b[0] || a[1] < b[1] || a[2] < b[2]); + } + + /// @brief Return the index (0, 1 or 2) with the smallest value. + size_t minIndex() const { return MinIndex(mVec); } + + /// @brief Return the index (0, 1 or 2) with the largest value. + size_t maxIndex() const { return MaxIndex(mVec); } + + void read(std::istream& is) { is.read(reinterpret_cast(mVec.data()), sizeof(mVec)); } + void write(std::ostream& os) const + { + os.write(reinterpret_cast(mVec.data()), sizeof(mVec)); + } + + /// @brief Return a hash value for this coordinate + /// @note Log2N is the binary logarithm of the hash table size. + /// @details The hash function is taken from the SIGGRAPH paper: + /// "VDB: High-resolution sparse volumes with dynamic topology" + template + size_t hash() const + { + return ((1< mVec; +}; // class Coord + + +//////////////////////////////////////// + + +/// @brief Axis-aligned bounding box of signed integer coordinates +/// @note The range of the integer coordinates, [min, max], is inclusive. +/// Thus, a bounding box with min = max is not empty but rather encloses +/// a single coordinate. +class CoordBBox +{ +public: + using Index64 = uint64_t; + using ValueType = Coord::ValueType; + + /// @brief Iterator over the Coord domain covered by a CoordBBox + /// @note If ZYXOrder is @c true, @e z is the fastest-moving coordinate, + /// otherwise the traversal is in XYZ order (i.e., @e x is fastest-moving). + template + class Iterator + { + public: + /// @brief C-tor from a bounding box + Iterator(const CoordBBox& b): mPos(b.min()), mMin(b.min()), mMax(b.max()) {} + /// @brief Increment the iterator to point to the next coordinate. + /// @details Iteration stops one past the maximum coordinate + /// along the axis determined by the template parameter. + Iterator& operator++() { ZYXOrder ? next<2,1,0>() : next<0,1,2>(); return *this; } + /// @brief Return @c true if the iterator still points to a valid coordinate. + operator bool() const { return ZYXOrder ? (mPos[0] <= mMax[0]) : (mPos[2] <= mMax[2]); } + /// @brief Return a const reference to the coordinate currently pointed to. + const Coord& operator*() const { return mPos; } + /// Return @c true if this iterator and the given iterator point to the same coordinate. + bool operator==(const Iterator& other) const + { + return ((mPos == other.mPos) && (mMin == other.mMin) && (mMax == other.mMax)); + } + /// Return @c true if this iterator and the given iterator point to different coordinates. + bool operator!=(const Iterator& other) const { return !(*this == other); } + private: + template + void next() + { + if (mPos[a] < mMax[a]) { ++mPos[a]; } // this is the most common case + else if (mPos[b] < mMax[b]) { mPos[a] = mMin[a]; ++mPos[b]; } + else if (mPos[c] <= mMax[c]) { mPos[a] = mMin[a]; mPos[b] = mMin[b]; ++mPos[c]; } + } + Coord mPos, mMin, mMax; + friend class CoordBBox; // for CoordBBox::end() + };// CoordBBox::Iterator + + using ZYXIterator = Iterator; + using XYZIterator = Iterator; + + /// @brief The default constructor produces an empty bounding box. + CoordBBox(): mMin(Coord::max()), mMax(Coord::min()) {} + /// @brief Construct a bounding box with the given @a min and @a max bounds. + CoordBBox(const Coord& min, const Coord& max): mMin(min), mMax(max) {} + /// @brief Construct from individual components of the min and max bounds. + CoordBBox(ValueType xMin, ValueType yMin, ValueType zMin, + ValueType xMax, ValueType yMax, ValueType zMax) + : mMin(xMin, yMin, zMin), mMax(xMax, yMax, zMax) + { + } + /// @brief Splitting constructor for use in TBB ranges + /// @note The other bounding box is assumed to be divisible. + CoordBBox(CoordBBox& other, const tbb::split&): mMin(other.mMin), mMax(other.mMax) + { + assert(this->is_divisible()); + const size_t n = this->maxExtent(); + mMax[n] = (mMin[n] + mMax[n]) >> 1; + other.mMin[n] = mMax[n] + 1; + } + + static CoordBBox createCube(const Coord& min, ValueType dim) + { + return CoordBBox(min, min.offsetBy(dim - 1)); + } + + /// Return an "infinite" bounding box, as defined by the Coord value range. + static CoordBBox inf() { return CoordBBox(Coord::min(), Coord::max()); } + + const Coord& min() const { return mMin; } + const Coord& max() const { return mMax; } + + Coord& min() { return mMin; } + Coord& max() { return mMax; } + + void reset() { mMin = Coord::max(); mMax = Coord::min(); } + void reset(const Coord& min, const Coord& max) { mMin = min; mMax = max; } + void resetToCube(const Coord& min, ValueType dim) { mMin = min; mMax = min.offsetBy(dim - 1); } + + /// @brief Return the minimum coordinate. + /// @note The start coordinate is inclusive. + Coord getStart() const { return mMin; } + /// @brief Return the maximum coordinate plus one. + /// @note This end coordinate is exclusive. + Coord getEnd() const { return mMax.offsetBy(1); } + + /// @brief Return a ZYX-order iterator that points to the minimum coordinate. + ZYXIterator begin() const { return ZYXIterator{*this}; } + /// @brief Return a ZYX-order iterator that points to the minimum coordinate. + ZYXIterator beginZYX() const { return ZYXIterator{*this}; } + /// @brief Return an XYZ-order iterator that points to the minimum coordinate. + XYZIterator beginXYZ() const { return XYZIterator{*this}; } + + /// @brief Return a ZYX-order iterator that points past the maximum coordinate. + ZYXIterator end() const { ZYXIterator it{*this}; it.mPos[0] = mMax[0] + 1; return it; } + /// @brief Return a ZYX-order iterator that points past the maximum coordinate. + ZYXIterator endZYX() const { return end(); } + /// @brief Return an XYZ-order iterator that points past the maximum coordinate. + XYZIterator endXYZ() const { XYZIterator it{*this}; it.mPos[2] = mMax[2] + 1; return it; } + + bool operator==(const CoordBBox& rhs) const { return mMin == rhs.mMin && mMax == rhs.mMax; } + bool operator!=(const CoordBBox& rhs) const { return !(*this == rhs); } + + /// @brief Return @c true if this bounding box is empty (i.e., encloses no coordinates). + bool empty() const + { +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wstrict-overflow" +#endif + return (mMin[0] > mMax[0] || mMin[1] > mMax[1] || mMin[2] > mMax[2]); +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) + #pragma GCC diagnostic pop +#endif + } + /// @brief Return @c true if this bounding box is nonempty + /// (i.e., encloses at least one coordinate). + operator bool() const { return !this->empty(); } + /// @brief Return @c true if this bounding box is nonempty + /// (i.e., encloses at least one coordinate). + bool hasVolume() const { return !this->empty(); } + + /// @brief Return the floating-point position of the center of this bounding box. + Vec3d getCenter() const { return 0.5 * Vec3d((mMin + mMax).asPointer()); } + + /// @brief Return the dimensions of the coordinates spanned by this bounding box. + /// @note Since coordinates are inclusive, a bounding box with min = max + /// has dimensions of (1, 1, 1). + Coord dim() const { return empty() ? Coord(0) : (mMax.offsetBy(1) - mMin); } + /// @todo deprecate - use dim instead + Coord extents() const { return this->dim(); } + /// @brief Return the integer volume of coordinates spanned by this bounding box. + /// @note Since coordinates are inclusive, a bounding box with min = max has volume one. + Index64 volume() const + { + const Coord d = this->dim(); + return Index64(d[0]) * Index64(d[1]) * Index64(d[2]); + } + /// @brief Return @c true if this bounding box can be subdivided [mainly for use by TBB]. + bool is_divisible() const { return mMin[0]dim().minIndex(); } + + /// @brief Return the index (0, 1 or 2) of the longest axis. + size_t maxExtent() const { return this->dim().maxIndex(); } + + /// @brief Return @c true if point (x, y, z) is inside this bounding box. + bool isInside(const Coord& xyz) const + { + return !(Coord::lessThan(xyz,mMin) || Coord::lessThan(mMax,xyz)); + } + + /// @brief Return @c true if the given bounding box is inside this bounding box. + bool isInside(const CoordBBox& b) const + { + return !(Coord::lessThan(b.mMin,mMin) || Coord::lessThan(mMax,b.mMax)); + } + + /// @brief Return @c true if the given bounding box overlaps with this bounding box. + bool hasOverlap(const CoordBBox& b) const + { + return !(Coord::lessThan(mMax,b.mMin) || Coord::lessThan(b.mMax,mMin)); + } + + /// @brief Pad this bounding box with the specified padding. + void expand(ValueType padding) + { + mMin.offset(-padding); + mMax.offset( padding); + } + + /// @brief Return a new instance that is expanded by the specified padding. + CoordBBox expandBy(ValueType padding) const + { + return CoordBBox(mMin.offsetBy(-padding),mMax.offsetBy(padding)); + } + + /// @brief Expand this bounding box to enclose point (x, y, z). + void expand(const Coord& xyz) + { + mMin.minComponent(xyz); + mMax.maxComponent(xyz); + } + + /// @brief Union this bounding box with the given bounding box. + void expand(const CoordBBox& bbox) + { + mMin.minComponent(bbox.min()); + mMax.maxComponent(bbox.max()); + } + /// @brief Intersect this bounding box with the given bounding box. + void intersect(const CoordBBox& bbox) + { + mMin.maxComponent(bbox.min()); + mMax.minComponent(bbox.max()); + } + /// @brief Union this bounding box with the cubical bounding box + /// of the given size and with the given minimum coordinates. + void expand(const Coord& min, Coord::ValueType dim) + { + mMin.minComponent(min); + mMax.maxComponent(min.offsetBy(dim-1)); + } + /// @brief Translate this bounding box by + /// (tx, ty, tz). + void translate(const Coord& t) { mMin += t; mMax += t; } + + /// @brief Move this bounding box to the specified min + void moveMin(const Coord& min) { mMax += min - mMin; mMin = min; } + + /// @brief Move this bounding box to the specified max + void moveMax(const Coord& max) { mMin += max - mMax; mMax = max; } + + /// @brief Populates an array with the eight corner points of this bounding box. + /// @details The ordering of the corner points is lexicographic. + /// @warning It is assumed that the pointer can be incremented at + /// least seven times, i.e. has storage for eight Coord elements! + void getCornerPoints(Coord *p) const + { + assert(p != nullptr); + p->reset(mMin.x(), mMin.y(), mMin.z()); ++p; + p->reset(mMin.x(), mMin.y(), mMax.z()); ++p; + p->reset(mMin.x(), mMax.y(), mMin.z()); ++p; + p->reset(mMin.x(), mMax.y(), mMax.z()); ++p; + p->reset(mMax.x(), mMin.y(), mMin.z()); ++p; + p->reset(mMax.x(), mMin.y(), mMax.z()); ++p; + p->reset(mMax.x(), mMax.y(), mMin.z()); ++p; + p->reset(mMax.x(), mMax.y(), mMax.z()); + } + + //@{ + /// @brief Bit-wise operations performed on both the min and max members + CoordBBox operator>> (size_t n) const { return CoordBBox(mMin>>n, mMax>>n); } + CoordBBox operator<< (size_t n) const { return CoordBBox(mMin<>=(size_t n) { mMin >>= n; mMax >>= n; return *this; } + CoordBBox operator& (Coord::Int32 n) const { return CoordBBox(mMin & n, mMax & n); } + CoordBBox operator| (Coord::Int32 n) const { return CoordBBox(mMin | n, mMax | n); } + CoordBBox& operator&= (Coord::Int32 n) { mMin &= n; mMax &= n; return *this; } + CoordBBox& operator|= (Coord::Int32 n) { mMin |= n; mMax |= n; return *this; } + //@} + + /// @brief Unserialize this bounding box from the given stream. + void read(std::istream& is) { mMin.read(is); mMax.read(is); } + /// @brief Serialize this bounding box to the given stream. + void write(std::ostream& os) const { mMin.write(os); mMax.write(os); } + +private: + Coord mMin, mMax; +}; // class CoordBBox + + +//////////////////////////////////////// + + +inline std::ostream& operator<<(std::ostream& os, const Coord& xyz) +{ + os << xyz.asVec3i(); return os; +} + + +inline Coord +Abs(const Coord& xyz) +{ + return Coord(Abs(xyz[0]), Abs(xyz[1]), Abs(xyz[2])); +} + + +//@{ +/// Allow a Coord to be added to or subtracted from a Vec3. +template +inline Vec3::type> +operator+(const Vec3& v0, const Coord& v1) +{ + Vec3::type> result(v0); + result[0] += v1[0]; + result[1] += v1[1]; + result[2] += v1[2]; + return result; +} + +template +inline Vec3::type> +operator+(const Coord& v1, const Vec3& v0) +{ + Vec3::type> result(v0); + result[0] += v1[0]; + result[1] += v1[1]; + result[2] += v1[2]; + return result; +} +//@} + + +//@{ +/// Allow a Coord to be subtracted from a Vec3. +template +inline Vec3::type> +operator-(const Vec3& v0, const Coord& v1) +{ + Vec3::type> result(v0); + result[0] -= v1[0]; + result[1] -= v1[1]; + result[2] -= v1[2]; + return result; +} + +template +inline Vec3::type> +operator-(const Coord& v1, const Vec3& v0) +{ + Vec3::type> result(v0); + result[0] -= v1[0]; + result[1] -= v1[1]; + result[2] -= v1[2]; + return -result; +} +//@} + +inline std::ostream& +operator<<(std::ostream& os, const CoordBBox& b) +{ + os << b.min() << " -> " << b.max(); + return os; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +//////////////////////////////////////// + +// template specialization of std::hash with Coord, which +// allows for Coord to be used as the key in std::unordered_map +namespace std {// injected in namespace std + +template<> +struct hash +{ + using Coord = openvdb::math::Coord; + using argument_type = Coord; + using result_type = std::size_t; + std::size_t operator()(const Coord& ijk) const noexcept { return ijk.Coord::hash<>(); } +};// std::hash + +}// namespace std + +#endif // OPENVDB_MATH_COORD_HAS_BEEN_INCLUDED diff --git a/openvdb/math/DDA.h b/openvdb/math/DDA.h new file mode 100644 index 00000000..8fb2b88f --- /dev/null +++ b/openvdb/math/DDA.h @@ -0,0 +1,344 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file DDA.h +/// +/// @author Ken Museth +/// +/// @brief Digital Differential Analyzers specialized for VDB. + +#ifndef OPENVDB_MATH_DDA_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_DDA_HAS_BEEN_INCLUDED + +#include "Coord.h" +#include "Math.h" +#include "Vec3.h" +#include +#include // for std::ostream +#include // for std::numeric_limits::max() +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief A Digital Differential Analyzer specialized for OpenVDB grids +/// @note Conceptually similar to Bresenham's line algorithm applied +/// to a 3D Ray intersecting OpenVDB nodes or voxels. Log2Dim = 0 +/// corresponds to a voxel and Log2Dim a tree node of size 2^Log2Dim. +/// +/// @note The Ray template class is expected to have the following +/// methods: test(time), t0(), t1(), invDir(), and operator()(time). +/// See the example Ray class above for their definition. +template +class DDA +{ +public: + using RealType = typename RayT::RealType; + using RealT = RealType; + using Vec3Type = typename RayT::Vec3Type; + using Vec3T = Vec3Type; + + /// @brief uninitialized constructor + DDA() {} + + DDA(const RayT& ray) { this->init(ray); } + + DDA(const RayT& ray, RealT startTime) { this->init(ray, startTime); } + + DDA(const RayT& ray, RealT startTime, RealT maxTime) { this->init(ray, startTime, maxTime); } + + inline void init(const RayT& ray, RealT startTime, RealT maxTime) + { + assert(startTime <= maxTime); + static const int DIM = 1 << Log2Dim; + mT0 = startTime; + mT1 = maxTime; + const Vec3T &pos = ray(mT0), &dir = ray.dir(), &inv = ray.invDir(); + mVoxel = Coord::floor(pos) & (~(DIM-1)); + for (int axis = 0; axis < 3; ++axis) { + if (math::isZero(dir[axis])) {//handles dir = +/- 0 + mStep[axis] = 0;//dummy value + mNext[axis] = std::numeric_limits::max();//i.e. disabled! + mDelta[axis] = std::numeric_limits::max();//dummy value + } else if (inv[axis] > 0) { + mStep[axis] = DIM; + mNext[axis] = mT0 + (mVoxel[axis] + DIM - pos[axis]) * inv[axis]; + mDelta[axis] = mStep[axis] * inv[axis]; + } else { + mStep[axis] = -DIM; + mNext[axis] = mT0 + (mVoxel[axis] - pos[axis]) * inv[axis]; + mDelta[axis] = mStep[axis] * inv[axis]; + } + } + } + + inline void init(const RayT& ray) { this->init(ray, ray.t0(), ray.t1()); } + + inline void init(const RayT& ray, RealT startTime) { this->init(ray, startTime, ray.t1()); } + + /// @brief Increment the voxel index to next intersected voxel or node + /// and returns true if the step in time does not exceed maxTime. + inline bool step() + { + const int stepAxis = static_cast(math::MinIndex(mNext)); + mT0 = mNext[stepAxis]; + mNext[stepAxis] += mDelta[stepAxis]; + mVoxel[stepAxis] += mStep[stepAxis]; + return mT0 <= mT1; + } + + /// @brief Return the index coordinates of the next node or voxel + /// intersected by the ray. If Log2Dim = 0 the return value is the + /// actual signed coordinate of the voxel, else it is the origin + /// of the corresponding VDB tree node or tile. + /// @note Incurs no computational overhead. + inline const Coord& voxel() const { return mVoxel; } + + /// @brief Return the time (parameterized along the Ray) of the + /// first hit of a tree node of size 2^Log2Dim. + /// @details This value is initialized to startTime or ray.t0() + /// depending on the constructor used. + /// @note Incurs no computational overhead. + inline RealType time() const { return mT0; } + + /// @brief Return the maximum time (parameterized along the Ray). + inline RealType maxTime() const { return mT1; } + + /// @brief Return the time (parameterized along the Ray) of the + /// second (i.e. next) hit of a tree node of size 2^Log2Dim. + /// @note Incurs a (small) computational overhead. + inline RealType next() const { return math::Min(mT1, mNext[0], mNext[1], mNext[2]); } + + /// @brief Print information about this DDA for debugging. + /// @param os a stream to which to write textual information. + void print(std::ostream& os = std::cout) const + { + os << "Dim=" << (1< +#include +#include + +#ifdef DWA_OPENVDB +#include +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + + +//////////////////////////////////////// + + +/// @brief Different discrete schemes used in the first derivatives. +// Add new items to the *end* of this list, and update NUM_DS_SCHEMES. +enum DScheme { + UNKNOWN_DS = -1, + CD_2NDT = 0, // center difference, 2nd order, but the result must be divided by 2 + CD_2ND, // center difference, 2nd order + CD_4TH, // center difference, 4th order + CD_6TH, // center difference, 6th order + FD_1ST, // forward difference, 1st order + FD_2ND, // forward difference, 2nd order + FD_3RD, // forward difference, 3rd order + BD_1ST, // backward difference, 1st order + BD_2ND, // backward difference, 2nd order + BD_3RD, // backward difference, 3rd order + FD_WENO5, // forward difference, weno5 + BD_WENO5, // backward difference, weno5 + FD_HJWENO5, // forward differene, HJ-weno5 + BD_HJWENO5 // backward difference, HJ-weno5 +}; + +enum { NUM_DS_SCHEMES = BD_HJWENO5 + 1 }; + + +inline std::string +dsSchemeToString(DScheme dss) +{ + std::string ret; + switch (dss) { + case UNKNOWN_DS: ret = "unknown_ds"; break; + case CD_2NDT: ret = "cd_2ndt"; break; + case CD_2ND: ret = "cd_2nd"; break; + case CD_4TH: ret = "cd_4th"; break; + case CD_6TH: ret = "cd_6th"; break; + case FD_1ST: ret = "fd_1st"; break; + case FD_2ND: ret = "fd_2nd"; break; + case FD_3RD: ret = "fd_3rd"; break; + case BD_1ST: ret = "bd_1st"; break; + case BD_2ND: ret = "bd_2nd"; break; + case BD_3RD: ret = "bd_3rd"; break; + case FD_WENO5: ret = "fd_weno5"; break; + case BD_WENO5: ret = "bd_weno5"; break; + case FD_HJWENO5: ret = "fd_hjweno5"; break; + case BD_HJWENO5: ret = "bd_hjweno5"; break; + } + return ret; +} + +inline DScheme +stringToDScheme(const std::string& s) +{ + DScheme ret = UNKNOWN_DS; + + std::string str = s; + boost::trim(str); + boost::to_lower(str); + + if (str == dsSchemeToString(CD_2NDT)) { + ret = CD_2NDT; + } else if (str == dsSchemeToString(CD_2ND)) { + ret = CD_2ND; + } else if (str == dsSchemeToString(CD_4TH)) { + ret = CD_4TH; + } else if (str == dsSchemeToString(CD_6TH)) { + ret = CD_6TH; + } else if (str == dsSchemeToString(FD_1ST)) { + ret = FD_1ST; + } else if (str == dsSchemeToString(FD_2ND)) { + ret = FD_2ND; + } else if (str == dsSchemeToString(FD_3RD)) { + ret = FD_3RD; + } else if (str == dsSchemeToString(BD_1ST)) { + ret = BD_1ST; + } else if (str == dsSchemeToString(BD_2ND)) { + ret = BD_2ND; + } else if (str == dsSchemeToString(BD_3RD)) { + ret = BD_3RD; + } else if (str == dsSchemeToString(FD_WENO5)) { + ret = FD_WENO5; + } else if (str == dsSchemeToString(BD_WENO5)) { + ret = BD_WENO5; + } else if (str == dsSchemeToString(FD_HJWENO5)) { + ret = FD_HJWENO5; + } else if (str == dsSchemeToString(BD_HJWENO5)) { + ret = BD_HJWENO5; + } + + return ret; +} + +inline std::string +dsSchemeToMenuName(DScheme dss) +{ + std::string ret; + switch (dss) { + case UNKNOWN_DS: ret = "Unknown DS scheme"; break; + case CD_2NDT: ret = "Twice 2nd-order center difference"; break; + case CD_2ND: ret = "2nd-order center difference"; break; + case CD_4TH: ret = "4th-order center difference"; break; + case CD_6TH: ret = "6th-order center difference"; break; + case FD_1ST: ret = "1st-order forward difference"; break; + case FD_2ND: ret = "2nd-order forward difference"; break; + case FD_3RD: ret = "3rd-order forward difference"; break; + case BD_1ST: ret = "1st-order backward difference"; break; + case BD_2ND: ret = "2nd-order backward difference"; break; + case BD_3RD: ret = "3rd-order backward difference"; break; + case FD_WENO5: ret = "5th-order WENO forward difference"; break; + case BD_WENO5: ret = "5th-order WENO backward difference"; break; + case FD_HJWENO5: ret = "5th-order HJ-WENO forward difference"; break; + case BD_HJWENO5: ret = "5th-order HJ-WENO backward difference"; break; + } + return ret; +} + + + +//////////////////////////////////////// + + +/// @brief Different discrete schemes used in the second derivatives. +// Add new items to the *end* of this list, and update NUM_DD_SCHEMES. +enum DDScheme { + UNKNOWN_DD = -1, + CD_SECOND = 0, // center difference, 2nd order + CD_FOURTH, // center difference, 4th order + CD_SIXTH // center difference, 6th order +}; + +enum { NUM_DD_SCHEMES = CD_SIXTH + 1 }; + + +//////////////////////////////////////// + + +/// @brief Biased Gradients are limited to non-centered differences +// Add new items to the *end* of this list, and update NUM_BIAS_SCHEMES. +enum BiasedGradientScheme { + UNKNOWN_BIAS = -1, + FIRST_BIAS = 0, // uses FD_1ST & BD_1ST + SECOND_BIAS, // uses FD_2ND & BD_2ND + THIRD_BIAS, // uses FD_3RD & BD_3RD + WENO5_BIAS, // uses WENO5 + HJWENO5_BIAS // uses HJWENO5 +}; + +enum { NUM_BIAS_SCHEMES = HJWENO5_BIAS + 1 }; + +inline std::string +biasedGradientSchemeToString(BiasedGradientScheme bgs) +{ + std::string ret; + switch (bgs) { + case UNKNOWN_BIAS: ret = "unknown_bias"; break; + case FIRST_BIAS: ret = "first_bias"; break; + case SECOND_BIAS: ret = "second_bias"; break; + case THIRD_BIAS: ret = "third_bias"; break; + case WENO5_BIAS: ret = "weno5_bias"; break; + case HJWENO5_BIAS: ret = "hjweno5_bias"; break; + } + return ret; +} + +inline BiasedGradientScheme +stringToBiasedGradientScheme(const std::string& s) +{ + BiasedGradientScheme ret = UNKNOWN_BIAS; + + std::string str = s; + boost::trim(str); + boost::to_lower(str); + + if (str == biasedGradientSchemeToString(FIRST_BIAS)) { + ret = FIRST_BIAS; + } else if (str == biasedGradientSchemeToString(SECOND_BIAS)) { + ret = SECOND_BIAS; + } else if (str == biasedGradientSchemeToString(THIRD_BIAS)) { + ret = THIRD_BIAS; + } else if (str == biasedGradientSchemeToString(WENO5_BIAS)) { + ret = WENO5_BIAS; + } else if (str == biasedGradientSchemeToString(HJWENO5_BIAS)) { + ret = HJWENO5_BIAS; + } + return ret; +} + +inline std::string +biasedGradientSchemeToMenuName(BiasedGradientScheme bgs) +{ + std::string ret; + switch (bgs) { + case UNKNOWN_BIAS: ret = "Unknown biased gradient"; break; + case FIRST_BIAS: ret = "1st-order biased gradient"; break; + case SECOND_BIAS: ret = "2nd-order biased gradient"; break; + case THIRD_BIAS: ret = "3rd-order biased gradient"; break; + case WENO5_BIAS: ret = "5th-order WENO biased gradient"; break; + case HJWENO5_BIAS: ret = "5th-order HJ-WENO biased gradient"; break; + } + return ret; +} + +//////////////////////////////////////// + + +/// @brief Temporal integration schemes +// Add new items to the *end* of this list, and update NUM_TEMPORAL_SCHEMES. +enum TemporalIntegrationScheme { + UNKNOWN_TIS = -1, + TVD_RK1,//same as explicit Euler integration + TVD_RK2, + TVD_RK3 +}; + +enum { NUM_TEMPORAL_SCHEMES = TVD_RK3 + 1 }; + +inline std::string +temporalIntegrationSchemeToString(TemporalIntegrationScheme tis) +{ + std::string ret; + switch (tis) { + case UNKNOWN_TIS: ret = "unknown_tis"; break; + case TVD_RK1: ret = "tvd_rk1"; break; + case TVD_RK2: ret = "tvd_rk2"; break; + case TVD_RK3: ret = "tvd_rk3"; break; + } + return ret; +} + +inline TemporalIntegrationScheme +stringToTemporalIntegrationScheme(const std::string& s) +{ + TemporalIntegrationScheme ret = UNKNOWN_TIS; + + std::string str = s; + boost::trim(str); + boost::to_lower(str); + + if (str == temporalIntegrationSchemeToString(TVD_RK1)) { + ret = TVD_RK1; + } else if (str == temporalIntegrationSchemeToString(TVD_RK2)) { + ret = TVD_RK2; + } else if (str == temporalIntegrationSchemeToString(TVD_RK3)) { + ret = TVD_RK3; + } + + return ret; +} + +inline std::string +temporalIntegrationSchemeToMenuName(TemporalIntegrationScheme tis) +{ + std::string ret; + switch (tis) { + case UNKNOWN_TIS: ret = "Unknown temporal integration"; break; + case TVD_RK1: ret = "Forward Euler"; break; + case TVD_RK2: ret = "2nd-order Runge-Kutta"; break; + case TVD_RK3: ret = "3rd-order Runge-Kutta"; break; + } + return ret; +} + + +//@} + + +/// @brief Implementation of nominally fifth-order finite-difference WENO +/// @details This function returns the numerical flux. See "High Order Finite Difference and +/// Finite Volume WENO Schemes and Discontinuous Galerkin Methods for CFD" - Chi-Wang Shu +/// ICASE Report No 2001-11 (page 6). Also see ICASE No 97-65 for a more complete reference +/// (Shu, 1997). +/// Given v1 = f(x-2dx), v2 = f(x-dx), v3 = f(x), v4 = f(x+dx) and v5 = f(x+2dx), +/// return an interpolated value f(x+dx/2) with the special property that +/// ( f(x+dx/2) - f(x-dx/2) ) / dx = df/dx (x) + error, +/// where the error is fifth-order in smooth regions: O(dx) <= error <=O(dx^5) +template +inline ValueType +WENO5(const ValueType& v1, const ValueType& v2, const ValueType& v3, + const ValueType& v4, const ValueType& v5, float scale2 = 0.01f) +{ + const double C = 13.0 / 12.0; + // WENO is formulated for non-dimensional equations, here the optional scale2 + // is a reference value (squared) for the function being interpolated. For + // example if 'v' is of order 1000, then scale2 = 10^6 is ok. But in practice + // leave scale2 = 1. + const double eps = 1.0e-6 * static_cast(scale2); + // {\tilde \omega_k} = \gamma_k / ( \beta_k + \epsilon)^2 in Shu's ICASE report) + const double A1=0.1/math::Pow2(C*math::Pow2(v1-2*v2+v3)+0.25*math::Pow2(v1-4*v2+3.0*v3)+eps), + A2=0.6/math::Pow2(C*math::Pow2(v2-2*v3+v4)+0.25*math::Pow2(v2-v4)+eps), + A3=0.3/math::Pow2(C*math::Pow2(v3-2*v4+v5)+0.25*math::Pow2(3.0*v3-4*v4+v5)+eps); + + return static_cast(static_cast( + A1*(2.0*v1 - 7.0*v2 + 11.0*v3) + + A2*(5.0*v3 - v2 + 2.0*v4) + + A3*(2.0*v3 + 5.0*v4 - v5))/(6.0*(A1+A2+A3))); +} + + +template +inline Real GodunovsNormSqrd(bool isOutside, + Real dP_xm, Real dP_xp, + Real dP_ym, Real dP_yp, + Real dP_zm, Real dP_zp) +{ + using math::Max; + using math::Min; + using math::Pow2; + + const Real zero(0); + Real dPLen2; + if (isOutside) { // outside + dPLen2 = Max(Pow2(Max(dP_xm, zero)), Pow2(Min(dP_xp,zero))); // (dP/dx)2 + dPLen2 += Max(Pow2(Max(dP_ym, zero)), Pow2(Min(dP_yp,zero))); // (dP/dy)2 + dPLen2 += Max(Pow2(Max(dP_zm, zero)), Pow2(Min(dP_zp,zero))); // (dP/dz)2 + } else { // inside + dPLen2 = Max(Pow2(Min(dP_xm, zero)), Pow2(Max(dP_xp,zero))); // (dP/dx)2 + dPLen2 += Max(Pow2(Min(dP_ym, zero)), Pow2(Max(dP_yp,zero))); // (dP/dy)2 + dPLen2 += Max(Pow2(Min(dP_zm, zero)), Pow2(Max(dP_zp,zero))); // (dP/dz)2 + } + return dPLen2; // |\nabla\phi|^2 +} + + +template +inline Real +GodunovsNormSqrd(bool isOutside, const Vec3& gradient_m, const Vec3& gradient_p) +{ + return GodunovsNormSqrd(isOutside, + gradient_m[0], gradient_p[0], + gradient_m[1], gradient_p[1], + gradient_m[2], gradient_p[2]); +} + + +#ifdef DWA_OPENVDB +inline simd::Float4 simdMin(const simd::Float4& a, const simd::Float4& b) { + return simd::Float4(_mm_min_ps(a.base(), b.base())); +} +inline simd::Float4 simdMax(const simd::Float4& a, const simd::Float4& b) { + return simd::Float4(_mm_max_ps(a.base(), b.base())); +} + +inline float simdSum(const simd::Float4& v); + +inline simd::Float4 Pow2(const simd::Float4& v) { return v * v; } + +template<> +inline simd::Float4 +WENO5(const simd::Float4& v1, const simd::Float4& v2, const simd::Float4& v3, + const simd::Float4& v4, const simd::Float4& v5, float scale2) +{ + using math::Pow2; + using F4 = simd::Float4; + const F4 + C(13.f / 12.f), + eps(1.0e-6f * scale2), + two(2.0), three(3.0), four(4.0), five(5.0), fourth(0.25), + A1 = F4(0.1f) / Pow2(C*Pow2(v1-two*v2+v3) + fourth*Pow2(v1-four*v2+three*v3) + eps), + A2 = F4(0.6f) / Pow2(C*Pow2(v2-two*v3+v4) + fourth*Pow2(v2-v4) + eps), + A3 = F4(0.3f) / Pow2(C*Pow2(v3-two*v4+v5) + fourth*Pow2(three*v3-four*v4+v5) + eps); + return (A1 * (two * v1 - F4(7.0) * v2 + F4(11.0) * v3) + + A2 * (five * v3 - v2 + two * v4) + + A3 * (two * v3 + five * v4 - v5)) / (F4(6.0) * (A1 + A2 + A3)); +} + + +inline float +simdSum(const simd::Float4& v) +{ + // temp = { v3+v3, v2+v2, v1+v3, v0+v2 } + __m128 temp = _mm_add_ps(v.base(), _mm_movehl_ps(v.base(), v.base())); + // temp = { v3+v3, v2+v2, v1+v3, (v0+v2)+(v1+v3) } + temp = _mm_add_ss(temp, _mm_shuffle_ps(temp, temp, 1)); + return _mm_cvtss_f32(temp); +} + +inline float +GodunovsNormSqrd(bool isOutside, const simd::Float4& dP_m, const simd::Float4& dP_p) +{ + const simd::Float4 zero(0.0); + simd::Float4 v = isOutside + ? simdMax(math::Pow2(simdMax(dP_m, zero)), math::Pow2(simdMin(dP_p, zero))) + : simdMax(math::Pow2(simdMin(dP_m, zero)), math::Pow2(simdMax(dP_p, zero))); + return simdSum(v);//should be v[0]+v[1]+v[2] +} +#endif + + +template +struct D1 +{ + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk); + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk); + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk); + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S); + + template + static typename Stencil::ValueType inY(const Stencil& S); + + template + static typename Stencil::ValueType inZ(const Stencil& S); +}; + +template<> +struct D1 +{ + // the difference opperator + template + static ValueType difference(const ValueType& xp1, const ValueType& xm1) { + return xp1 - xm1; + } + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(1, 0, 0)), + grid.getValue(ijk.offsetBy(-1, 0, 0))); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0, 1, 0)), + grid.getValue(ijk.offsetBy( 0, -1, 0))); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0, 0, 1)), + grid.getValue(ijk.offsetBy( 0, 0, -1))); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue< 1, 0, 0>(), S.template getValue<-1, 0, 0>()); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 1, 0>(), S.template getValue< 0,-1, 0>()); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 1>(), S.template getValue< 0, 0,-1>()); + } +}; + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp1, const ValueType& xm1) { + return (xp1 - xm1)*ValueType(0.5); + } + + + // random access + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(1, 0, 0)), + grid.getValue(ijk.offsetBy(-1, 0, 0))); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0, 1, 0)), + grid.getValue(ijk.offsetBy( 0, -1, 0))); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0, 0, 1)), + grid.getValue(ijk.offsetBy( 0, 0, -1))); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue< 1, 0, 0>(), S.template getValue<-1, 0, 0>()); + } + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference(S.template getValue< 0, 1, 0>(), S.template getValue< 0,-1, 0>()); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference(S.template getValue< 0, 0, 1>(), S.template getValue< 0, 0,-1>()); + } + +}; + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference( const ValueType& xp2, const ValueType& xp1, + const ValueType& xm1, const ValueType& xm2 ) { + return ValueType(2./3.)*(xp1 - xm1) + ValueType(1./12.)*(xm2 - xp2) ; + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 2,0,0)), grid.getValue(ijk.offsetBy( 1,0,0)), + grid.getValue(ijk.offsetBy(-1,0,0)), grid.getValue(ijk.offsetBy(-2,0,0)) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + + return difference( + grid.getValue(ijk.offsetBy( 0, 2, 0)), grid.getValue(ijk.offsetBy( 0, 1, 0)), + grid.getValue(ijk.offsetBy( 0,-1, 0)), grid.getValue(ijk.offsetBy( 0,-2, 0)) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + + return difference( + grid.getValue(ijk.offsetBy( 0, 0, 2)), grid.getValue(ijk.offsetBy( 0, 0, 1)), + grid.getValue(ijk.offsetBy( 0, 0,-1)), grid.getValue(ijk.offsetBy( 0, 0,-2)) ); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue<-2, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0,-2, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0,-2>() ); + } +}; + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference( const ValueType& xp3, const ValueType& xp2, const ValueType& xp1, + const ValueType& xm1, const ValueType& xm2, const ValueType& xm3 ) + { + return ValueType(3./4.)*(xp1 - xm1) - ValueType(0.15)*(xp2 - xm2) + + ValueType(1./60.)*(xp3-xm3); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 3,0,0)), grid.getValue(ijk.offsetBy( 2,0,0)), + grid.getValue(ijk.offsetBy( 1,0,0)), grid.getValue(ijk.offsetBy(-1,0,0)), + grid.getValue(ijk.offsetBy(-2,0,0)), grid.getValue(ijk.offsetBy(-3,0,0))); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 0, 3, 0)), grid.getValue(ijk.offsetBy( 0, 2, 0)), + grid.getValue(ijk.offsetBy( 0, 1, 0)), grid.getValue(ijk.offsetBy( 0,-1, 0)), + grid.getValue(ijk.offsetBy( 0,-2, 0)), grid.getValue(ijk.offsetBy( 0,-3, 0))); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 0, 0, 3)), grid.getValue(ijk.offsetBy( 0, 0, 2)), + grid.getValue(ijk.offsetBy( 0, 0, 1)), grid.getValue(ijk.offsetBy( 0, 0,-1)), + grid.getValue(ijk.offsetBy( 0, 0,-2)), grid.getValue(ijk.offsetBy( 0, 0,-3))); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue< 3, 0, 0>(), + S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue<-2, 0, 0>(), + S.template getValue<-3, 0, 0>()); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + + return difference( S.template getValue< 0, 3, 0>(), + S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0,-2, 0>(), + S.template getValue< 0,-3, 0>()); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + + return difference( S.template getValue< 0, 0, 3>(), + S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0,-2>(), + S.template getValue< 0, 0,-3>()); + } +}; + + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp1, const ValueType& xp0) { + return xp1 - xp0; + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(1, 0, 0)), grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(0, 1, 0)), grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(0, 0, 1)), grid.getValue(ijk)); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue< 1, 0, 0>(), S.template getValue< 0, 0, 0>()); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference(S.template getValue< 0, 1, 0>(), S.template getValue< 0, 0, 0>()); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference(S.template getValue< 0, 0, 1>(), S.template getValue< 0, 0, 0>()); + } +}; + + +template<> +struct D1 +{ + // the difference opperator + template + static ValueType difference(const ValueType& xp2, const ValueType& xp1, const ValueType& xp0) + { + return ValueType(2)*xp1 -(ValueType(0.5)*xp2 + ValueType(3./2.)*xp0); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(2,0,0)), + grid.getValue(ijk.offsetBy(1,0,0)), + grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0,2,0)), + grid.getValue(ijk.offsetBy(0,1,0)), + grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0,0,2)), + grid.getValue(ijk.offsetBy(0,0,1)), + grid.getValue(ijk)); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0, 0>() ); + } + +}; + + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp3, const ValueType& xp2, + const ValueType& xp1, const ValueType& xp0) + { + return static_cast(xp3/3.0 - 1.5*xp2 + 3.0*xp1 - 11.0*xp0/6.0); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(3,0,0)), + grid.getValue(ijk.offsetBy(2,0,0)), + grid.getValue(ijk.offsetBy(1,0,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(0,3,0)), + grid.getValue(ijk.offsetBy(0,2,0)), + grid.getValue(ijk.offsetBy(0,1,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(0,0,3)), + grid.getValue(ijk.offsetBy(0,0,2)), + grid.getValue(ijk.offsetBy(0,0,1)), + grid.getValue(ijk) ); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue< 3, 0, 0>(), + S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference(S.template getValue< 0, 3, 0>(), + S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 3>(), + S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0, 0>() ); + } +}; + + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xm1, const ValueType& xm0) { + return -D1::difference(xm1, xm0); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(-1,0,0)), grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(0,-1,0)), grid.getValue(ijk)); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference(grid.getValue(ijk.offsetBy(0, 0,-1)), grid.getValue(ijk)); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue<-1, 0, 0>(), S.template getValue< 0, 0, 0>()); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference(S.template getValue< 0,-1, 0>(), S.template getValue< 0, 0, 0>()); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference(S.template getValue< 0, 0,-1>(), S.template getValue< 0, 0, 0>()); + } +}; + + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xm2, const ValueType& xm1, const ValueType& xm0) + { + return -D1::difference(xm2, xm1, xm0); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(-2,0,0)), + grid.getValue(ijk.offsetBy(-1,0,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(0,-2,0)), + grid.getValue(ijk.offsetBy(0,-1,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(0,0,-2)), + grid.getValue(ijk.offsetBy(0,0,-1)), + grid.getValue(ijk) ); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue<-2, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0,-2, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0,-2>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0, 0>() ); + } +}; + + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xm3, const ValueType& xm2, + const ValueType& xm1, const ValueType& xm0) + { + return -D1::difference(xm3, xm2, xm1, xm0); + } + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy(-3,0,0)), + grid.getValue(ijk.offsetBy(-2,0,0)), + grid.getValue(ijk.offsetBy(-1,0,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy( 0,-3,0)), + grid.getValue(ijk.offsetBy( 0,-2,0)), + grid.getValue(ijk.offsetBy( 0,-1,0)), + grid.getValue(ijk) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy( 0, 0,-3)), + grid.getValue(ijk.offsetBy( 0, 0,-2)), + grid.getValue(ijk.offsetBy( 0, 0,-1)), + grid.getValue(ijk) ); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue<-3, 0, 0>(), + S.template getValue<-2, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0,-3, 0>(), + S.template getValue< 0,-2, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0, 0, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0,-3>(), + S.template getValue< 0, 0,-2>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0, 0>() ); + } + +}; + +template<> +struct D1 +{ + // the difference operator + template + static ValueType difference(const ValueType& xp3, const ValueType& xp2, + const ValueType& xp1, const ValueType& xp0, + const ValueType& xm1, const ValueType& xm2) { + return WENO5(xp3, xp2, xp1, xp0, xm1) + - WENO5(xp2, xp1, xp0, xm1, xm2); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(3,0,0)); + V[1] = grid.getValue(ijk.offsetBy(2,0,0)); + V[2] = grid.getValue(ijk.offsetBy(1,0,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(-1,0,0)); + V[5] = grid.getValue(ijk.offsetBy(-2,0,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,3,0)); + V[1] = grid.getValue(ijk.offsetBy(0,2,0)); + V[2] = grid.getValue(ijk.offsetBy(0,1,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,-1,0)); + V[5] = grid.getValue(ijk.offsetBy(0,-2,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,0,3)); + V[1] = grid.getValue(ijk.offsetBy(0,0,2)); + V[2] = grid.getValue(ijk.offsetBy(0,0,1)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,0,-1)); + V[5] = grid.getValue(ijk.offsetBy(0,0,-2)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + + return static_cast(difference( + S.template getValue< 3, 0, 0>(), + S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue<-2, 0, 0>() )); + + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return static_cast(difference( + S.template getValue< 0, 3, 0>(), + S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0,-2, 0>() )); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return static_cast(difference( + S.template getValue< 0, 0, 3>(), + S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0,-2>() )); + } +}; + +template<> +struct D1 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp3, const ValueType& xp2, + const ValueType& xp1, const ValueType& xp0, + const ValueType& xm1, const ValueType& xm2) { + return WENO5(xp3 - xp2, xp2 - xp1, xp1 - xp0, xp0-xm1, xm1-xm2); + } + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(3,0,0)); + V[1] = grid.getValue(ijk.offsetBy(2,0,0)); + V[2] = grid.getValue(ijk.offsetBy(1,0,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(-1,0,0)); + V[5] = grid.getValue(ijk.offsetBy(-2,0,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,3,0)); + V[1] = grid.getValue(ijk.offsetBy(0,2,0)); + V[2] = grid.getValue(ijk.offsetBy(0,1,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,-1,0)); + V[5] = grid.getValue(ijk.offsetBy(0,-2,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,0,3)); + V[1] = grid.getValue(ijk.offsetBy(0,0,2)); + V[2] = grid.getValue(ijk.offsetBy(0,0,1)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,0,-1)); + V[5] = grid.getValue(ijk.offsetBy(0,0,-2)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + + return difference( S.template getValue< 3, 0, 0>(), + S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue<-1, 0, 0>(), + S.template getValue<-2, 0, 0>() ); + + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 3, 0>(), + S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0,-1, 0>(), + S.template getValue< 0,-2, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + + return difference( S.template getValue< 0, 0, 3>(), + S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0, 0,-1>(), + S.template getValue< 0, 0,-2>() ); + } + +}; + +template<> +struct D1 +{ + + template + static ValueType difference(const ValueType& xm3, const ValueType& xm2, const ValueType& xm1, + const ValueType& xm0, const ValueType& xp1, const ValueType& xp2) + { + return -D1::difference(xm3, xm2, xm1, xm0, xp1, xp2); + } + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(-3,0,0)); + V[1] = grid.getValue(ijk.offsetBy(-2,0,0)); + V[2] = grid.getValue(ijk.offsetBy(-1,0,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(1,0,0)); + V[5] = grid.getValue(ijk.offsetBy(2,0,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,-3,0)); + V[1] = grid.getValue(ijk.offsetBy(0,-2,0)); + V[2] = grid.getValue(ijk.offsetBy(0,-1,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,1,0)); + V[5] = grid.getValue(ijk.offsetBy(0,2,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,0,-3)); + V[1] = grid.getValue(ijk.offsetBy(0,0,-2)); + V[2] = grid.getValue(ijk.offsetBy(0,0,-1)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,0,1)); + V[5] = grid.getValue(ijk.offsetBy(0,0,2)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue<-3, 0, 0>(); + V[1] = S.template getValue<-2, 0, 0>(); + V[2] = S.template getValue<-1, 0, 0>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 1, 0, 0>(); + V[5] = S.template getValue< 2, 0, 0>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue< 0,-3, 0>(); + V[1] = S.template getValue< 0,-2, 0>(); + V[2] = S.template getValue< 0,-1, 0>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 0, 1, 0>(); + V[5] = S.template getValue< 0, 2, 0>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue< 0, 0,-3>(); + V[1] = S.template getValue< 0, 0,-2>(); + V[2] = S.template getValue< 0, 0,-1>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 0, 0, 1>(); + V[5] = S.template getValue< 0, 0, 2>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } +}; + + +template<> +struct D1 +{ + template + static ValueType difference(const ValueType& xm3, const ValueType& xm2, const ValueType& xm1, + const ValueType& xm0, const ValueType& xp1, const ValueType& xp2) + { + return -D1::difference(xm3, xm2, xm1, xm0, xp1, xp2); + } + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(-3,0,0)); + V[1] = grid.getValue(ijk.offsetBy(-2,0,0)); + V[2] = grid.getValue(ijk.offsetBy(-1,0,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(1,0,0)); + V[5] = grid.getValue(ijk.offsetBy(2,0,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,-3,0)); + V[1] = grid.getValue(ijk.offsetBy(0,-2,0)); + V[2] = grid.getValue(ijk.offsetBy(0,-1,0)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,1,0)); + V[5] = grid.getValue(ijk.offsetBy(0,2,0)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType V[6]; + V[0] = grid.getValue(ijk.offsetBy(0,0,-3)); + V[1] = grid.getValue(ijk.offsetBy(0,0,-2)); + V[2] = grid.getValue(ijk.offsetBy(0,0,-1)); + V[3] = grid.getValue(ijk); + V[4] = grid.getValue(ijk.offsetBy(0,0,1)); + V[5] = grid.getValue(ijk.offsetBy(0,0,2)); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue<-3, 0, 0>(); + V[1] = S.template getValue<-2, 0, 0>(); + V[2] = S.template getValue<-1, 0, 0>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 1, 0, 0>(); + V[5] = S.template getValue< 2, 0, 0>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue< 0,-3, 0>(); + V[1] = S.template getValue< 0,-2, 0>(); + V[2] = S.template getValue< 0,-1, 0>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 0, 1, 0>(); + V[5] = S.template getValue< 0, 2, 0>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + using ValueType = typename Stencil::ValueType; + ValueType V[6]; + V[0] = S.template getValue< 0, 0,-3>(); + V[1] = S.template getValue< 0, 0,-2>(); + V[2] = S.template getValue< 0, 0,-1>(); + V[3] = S.template getValue< 0, 0, 0>(); + V[4] = S.template getValue< 0, 0, 1>(); + V[5] = S.template getValue< 0, 0, 2>(); + + return difference(V[0], V[1], V[2], V[3], V[4], V[5]); + } +}; + + +template +struct D1Vec +{ + // random access version + template + static typename Accessor::ValueType::value_type + inX(const Accessor& grid, const Coord& ijk, int n) + { + return D1::inX(grid, ijk)[n]; + } + + template + static typename Accessor::ValueType::value_type + inY(const Accessor& grid, const Coord& ijk, int n) + { + return D1::inY(grid, ijk)[n]; + } + template + static typename Accessor::ValueType::value_type + inZ(const Accessor& grid, const Coord& ijk, int n) + { + return D1::inZ(grid, ijk)[n]; + } + + + // stencil access version + template + static typename Stencil::ValueType::value_type inX(const Stencil& S, int n) + { + return D1::inX(S)[n]; + } + + template + static typename Stencil::ValueType::value_type inY(const Stencil& S, int n) + { + return D1::inY(S)[n]; + } + + template + static typename Stencil::ValueType::value_type inZ(const Stencil& S, int n) + { + return D1::inZ(S)[n]; + } +}; + + +template<> +struct D1Vec +{ + + // random access version + template + static typename Accessor::ValueType::value_type + inX(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy( 1, 0, 0))[n], + grid.getValue(ijk.offsetBy(-1, 0, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inY(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy(0, 1, 0))[n], + grid.getValue(ijk.offsetBy(0,-1, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inZ(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy(0, 0, 1))[n], + grid.getValue(ijk.offsetBy(0, 0,-1))[n] ); + } + + // stencil access version + template + static typename Stencil::ValueType::value_type inX(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 1, 0, 0>()[n], + S.template getValue<-1, 0, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inY(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 0, 1, 0>()[n], + S.template getValue< 0,-1, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inZ(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 0, 0, 1>()[n], + S.template getValue< 0, 0,-1>()[n] ); + } +}; + +template<> +struct D1Vec +{ + + // random access version + template + static typename Accessor::ValueType::value_type + inX(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy( 1, 0, 0))[n] , + grid.getValue(ijk.offsetBy(-1, 0, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inY(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy(0, 1, 0))[n] , + grid.getValue(ijk.offsetBy(0,-1, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inZ(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( grid.getValue(ijk.offsetBy(0, 0, 1))[n] , + grid.getValue(ijk.offsetBy(0, 0,-1))[n] ); + } + + + // stencil access version + template + static typename Stencil::ValueType::value_type inX(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 1, 0, 0>()[n], + S.template getValue<-1, 0, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inY(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 0, 1, 0>()[n], + S.template getValue< 0,-1, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inZ(const Stencil& S, int n) + { + return D1::difference( S.template getValue< 0, 0, 1>()[n], + S.template getValue< 0, 0,-1>()[n] ); + } +}; + + +template<> +struct D1Vec { + // using value_type = typename Accessor::ValueType::value_type; + + + // random access version + template + static typename Accessor::ValueType::value_type + inX(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy(2, 0, 0))[n], grid.getValue(ijk.offsetBy( 1, 0, 0))[n], + grid.getValue(ijk.offsetBy(-1,0, 0))[n], grid.getValue(ijk.offsetBy(-2, 0, 0))[n]); + } + + template + static typename Accessor::ValueType::value_type + inY(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy( 0, 2, 0))[n], grid.getValue(ijk.offsetBy( 0, 1, 0))[n], + grid.getValue(ijk.offsetBy( 0,-1, 0))[n], grid.getValue(ijk.offsetBy( 0,-2, 0))[n]); + } + + template + static typename Accessor::ValueType::value_type + inZ(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy(0,0, 2))[n], grid.getValue(ijk.offsetBy( 0, 0, 1))[n], + grid.getValue(ijk.offsetBy(0,0,-1))[n], grid.getValue(ijk.offsetBy( 0, 0,-2))[n]); + } + + // stencil access version + template + static typename Stencil::ValueType::value_type inX(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 2, 0, 0>()[n], S.template getValue< 1, 0, 0>()[n], + S.template getValue<-1, 0, 0>()[n], S.template getValue<-2, 0, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inY(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 0, 2, 0>()[n], S.template getValue< 0, 1, 0>()[n], + S.template getValue< 0,-1, 0>()[n], S.template getValue< 0,-2, 0>()[n]); + } + + template + static typename Stencil::ValueType::value_type inZ(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 0, 0, 2>()[n], S.template getValue< 0, 0, 1>()[n], + S.template getValue< 0, 0,-1>()[n], S.template getValue< 0, 0,-2>()[n]); + } +}; + + +template<> +struct D1Vec +{ + //using ValueType = typename Accessor::ValueType::value_type::value_type; + + // random access version + template + static typename Accessor::ValueType::value_type + inX(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy( 3, 0, 0))[n], grid.getValue(ijk.offsetBy( 2, 0, 0))[n], + grid.getValue(ijk.offsetBy( 1, 0, 0))[n], grid.getValue(ijk.offsetBy(-1, 0, 0))[n], + grid.getValue(ijk.offsetBy(-2, 0, 0))[n], grid.getValue(ijk.offsetBy(-3, 0, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inY(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy( 0, 3, 0))[n], grid.getValue(ijk.offsetBy( 0, 2, 0))[n], + grid.getValue(ijk.offsetBy( 0, 1, 0))[n], grid.getValue(ijk.offsetBy( 0,-1, 0))[n], + grid.getValue(ijk.offsetBy( 0,-2, 0))[n], grid.getValue(ijk.offsetBy( 0,-3, 0))[n] ); + } + + template + static typename Accessor::ValueType::value_type + inZ(const Accessor& grid, const Coord& ijk, int n) + { + return D1::difference( + grid.getValue(ijk.offsetBy( 0, 0, 3))[n], grid.getValue(ijk.offsetBy( 0, 0, 2))[n], + grid.getValue(ijk.offsetBy( 0, 0, 1))[n], grid.getValue(ijk.offsetBy( 0, 0,-1))[n], + grid.getValue(ijk.offsetBy( 0, 0,-2))[n], grid.getValue(ijk.offsetBy( 0, 0,-3))[n] ); + } + + + // stencil access version + template + static typename Stencil::ValueType::value_type inX(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 3, 0, 0>()[n], S.template getValue< 2, 0, 0>()[n], + S.template getValue< 1, 0, 0>()[n], S.template getValue<-1, 0, 0>()[n], + S.template getValue<-2, 0, 0>()[n], S.template getValue<-3, 0, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inY(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 0, 3, 0>()[n], S.template getValue< 0, 2, 0>()[n], + S.template getValue< 0, 1, 0>()[n], S.template getValue< 0,-1, 0>()[n], + S.template getValue< 0,-2, 0>()[n], S.template getValue< 0,-3, 0>()[n] ); + } + + template + static typename Stencil::ValueType::value_type inZ(const Stencil& S, int n) + { + return D1::difference( + S.template getValue< 0, 0, 3>()[n], S.template getValue< 0, 0, 2>()[n], + S.template getValue< 0, 0, 1>()[n], S.template getValue< 0, 0,-1>()[n], + S.template getValue< 0, 0,-2>()[n], S.template getValue< 0, 0,-3>()[n] ); + } +}; + +template +struct D2 +{ + + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk); + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk); + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk); + + // cross derivatives + template + static typename Accessor::ValueType inXandY(const Accessor& grid, const Coord& ijk); + + template + static typename Accessor::ValueType inXandZ(const Accessor& grid, const Coord& ijk); + + template + static typename Accessor::ValueType inYandZ(const Accessor& grid, const Coord& ijk); + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S); + template + static typename Stencil::ValueType inY(const Stencil& S); + template + static typename Stencil::ValueType inZ(const Stencil& S); + + // cross derivatives + template + static typename Stencil::ValueType inXandY(const Stencil& S); + + template + static typename Stencil::ValueType inXandZ(const Stencil& S); + + template + static typename Stencil::ValueType inYandZ(const Stencil& S); +}; + +template<> +struct D2 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp1, const ValueType& xp0, const ValueType& xm1) + { + return xp1 + xm1 - ValueType(2)*xp0; + } + + template + static ValueType crossdifference(const ValueType& xpyp, const ValueType& xpym, + const ValueType& xmyp, const ValueType& xmym) + { + return ValueType(0.25)*(xpyp + xmym - xpym - xmyp); + } + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy( 1,0,0)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy(-1,0,0)) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + + return difference( grid.getValue(ijk.offsetBy(0, 1,0)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy(0,-1,0)) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( grid.getValue(ijk.offsetBy( 0,0, 1)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy( 0,0,-1)) ); + } + + // cross derivatives + template + static typename Accessor::ValueType inXandY(const Accessor& grid, const Coord& ijk) + { + return crossdifference( + grid.getValue(ijk.offsetBy(1, 1,0)), grid.getValue(ijk.offsetBy( 1,-1,0)), + grid.getValue(ijk.offsetBy(-1,1,0)), grid.getValue(ijk.offsetBy(-1,-1,0))); + + } + + template + static typename Accessor::ValueType inXandZ(const Accessor& grid, const Coord& ijk) + { + return crossdifference( + grid.getValue(ijk.offsetBy(1,0, 1)), grid.getValue(ijk.offsetBy(1, 0,-1)), + grid.getValue(ijk.offsetBy(-1,0,1)), grid.getValue(ijk.offsetBy(-1,0,-1)) ); + } + + template + static typename Accessor::ValueType inYandZ(const Accessor& grid, const Coord& ijk) + { + return crossdifference( + grid.getValue(ijk.offsetBy(0, 1,1)), grid.getValue(ijk.offsetBy(0, 1,-1)), + grid.getValue(ijk.offsetBy(0,-1,1)), grid.getValue(ijk.offsetBy(0,-1,-1)) ); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue< 1, 0, 0>(), S.template getValue< 0, 0, 0>(), + S.template getValue<-1, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 1, 0>(), S.template getValue< 0, 0, 0>(), + S.template getValue< 0,-1, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 1>(), S.template getValue< 0, 0, 0>(), + S.template getValue< 0, 0,-1>() ); + } + + // cross derivatives + template + static typename Stencil::ValueType inXandY(const Stencil& S) + { + return crossdifference(S.template getValue< 1, 1, 0>(), S.template getValue< 1,-1, 0>(), + S.template getValue<-1, 1, 0>(), S.template getValue<-1,-1, 0>() ); + } + + template + static typename Stencil::ValueType inXandZ(const Stencil& S) + { + return crossdifference(S.template getValue< 1, 0, 1>(), S.template getValue< 1, 0,-1>(), + S.template getValue<-1, 0, 1>(), S.template getValue<-1, 0,-1>() ); + } + + template + static typename Stencil::ValueType inYandZ(const Stencil& S) + { + return crossdifference(S.template getValue< 0, 1, 1>(), S.template getValue< 0, 1,-1>(), + S.template getValue< 0,-1, 1>(), S.template getValue< 0,-1,-1>() ); + } +}; + + +template<> +struct D2 +{ + + // the difference opperator + template + static ValueType difference(const ValueType& xp2, const ValueType& xp1, const ValueType& xp0, + const ValueType& xm1, const ValueType& xm2) { + return ValueType(-1./12.)*(xp2 + xm2) + ValueType(4./3.)*(xp1 + xm1) -ValueType(2.5)*xp0; + } + + template + static ValueType crossdifference(const ValueType& xp2yp2, const ValueType& xp2yp1, + const ValueType& xp2ym1, const ValueType& xp2ym2, + const ValueType& xp1yp2, const ValueType& xp1yp1, + const ValueType& xp1ym1, const ValueType& xp1ym2, + const ValueType& xm2yp2, const ValueType& xm2yp1, + const ValueType& xm2ym1, const ValueType& xm2ym2, + const ValueType& xm1yp2, const ValueType& xm1yp1, + const ValueType& xm1ym1, const ValueType& xm1ym2 ) { + ValueType tmp1 = + ValueType(2./3.0)*(xp1yp1 - xm1yp1 - xp1ym1 + xm1ym1)- + ValueType(1./12.)*(xp2yp1 - xm2yp1 - xp2ym1 + xm2ym1); + ValueType tmp2 = + ValueType(2./3.0)*(xp1yp2 - xm1yp2 - xp1ym2 + xm1ym2)- + ValueType(1./12.)*(xp2yp2 - xm2yp2 - xp2ym2 + xm2ym2); + + return ValueType(2./3.)*tmp1 - ValueType(1./12.)*tmp2; + } + + + + // random access version + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(2,0,0)), grid.getValue(ijk.offsetBy( 1,0,0)), + grid.getValue(ijk), + grid.getValue(ijk.offsetBy(-1,0,0)), grid.getValue(ijk.offsetBy(-2, 0, 0))); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0, 2,0)), grid.getValue(ijk.offsetBy(0, 1,0)), + grid.getValue(ijk), + grid.getValue(ijk.offsetBy(0,-1,0)), grid.getValue(ijk.offsetBy(0,-2, 0))); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy(0,0, 2)), grid.getValue(ijk.offsetBy(0, 0,1)), + grid.getValue(ijk), + grid.getValue(ijk.offsetBy(0,0,-1)), grid.getValue(ijk.offsetBy(0,0,-2))); + } + + // cross derivatives + template + static typename Accessor::ValueType inXandY(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + typename Accessor::ValueType tmp1 = + D1::inX(grid, ijk.offsetBy(0, 1, 0)) - + D1::inX(grid, ijk.offsetBy(0,-1, 0)); + typename Accessor::ValueType tmp2 = + D1::inX(grid, ijk.offsetBy(0, 2, 0)) - + D1::inX(grid, ijk.offsetBy(0,-2, 0)); + return ValueType(2./3.)*tmp1 - ValueType(1./12.)*tmp2; + } + + template + static typename Accessor::ValueType inXandZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + typename Accessor::ValueType tmp1 = + D1::inX(grid, ijk.offsetBy(0, 0, 1)) - + D1::inX(grid, ijk.offsetBy(0, 0,-1)); + typename Accessor::ValueType tmp2 = + D1::inX(grid, ijk.offsetBy(0, 0, 2)) - + D1::inX(grid, ijk.offsetBy(0, 0,-2)); + return ValueType(2./3.)*tmp1 - ValueType(1./12.)*tmp2; + } + + template + static typename Accessor::ValueType inYandZ(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + typename Accessor::ValueType tmp1 = + D1::inY(grid, ijk.offsetBy(0, 0, 1)) - + D1::inY(grid, ijk.offsetBy(0, 0,-1)); + typename Accessor::ValueType tmp2 = + D1::inY(grid, ijk.offsetBy(0, 0, 2)) - + D1::inY(grid, ijk.offsetBy(0, 0,-2)); + return ValueType(2./3.)*tmp1 - ValueType(1./12.)*tmp2; + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference(S.template getValue< 2, 0, 0>(), S.template getValue< 1, 0, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue<-1, 0, 0>(), S.template getValue<-2, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference(S.template getValue< 0, 2, 0>(), S.template getValue< 0, 1, 0>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0,-1, 0>(), S.template getValue< 0,-2, 0>() ); + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference(S.template getValue< 0, 0, 2>(), S.template getValue< 0, 0, 1>(), + S.template getValue< 0, 0, 0>(), + S.template getValue< 0, 0,-1>(), S.template getValue< 0, 0,-2>() ); + } + + // cross derivatives + template + static typename Stencil::ValueType inXandY(const Stencil& S) + { + return crossdifference( + S.template getValue< 2, 2, 0>(), S.template getValue< 2, 1, 0>(), + S.template getValue< 2,-1, 0>(), S.template getValue< 2,-2, 0>(), + S.template getValue< 1, 2, 0>(), S.template getValue< 1, 1, 0>(), + S.template getValue< 1,-1, 0>(), S.template getValue< 1,-2, 0>(), + S.template getValue<-2, 2, 0>(), S.template getValue<-2, 1, 0>(), + S.template getValue<-2,-1, 0>(), S.template getValue<-2,-2, 0>(), + S.template getValue<-1, 2, 0>(), S.template getValue<-1, 1, 0>(), + S.template getValue<-1,-1, 0>(), S.template getValue<-1,-2, 0>() ); + } + + template + static typename Stencil::ValueType inXandZ(const Stencil& S) + { + return crossdifference( + S.template getValue< 2, 0, 2>(), S.template getValue< 2, 0, 1>(), + S.template getValue< 2, 0,-1>(), S.template getValue< 2, 0,-2>(), + S.template getValue< 1, 0, 2>(), S.template getValue< 1, 0, 1>(), + S.template getValue< 1, 0,-1>(), S.template getValue< 1, 0,-2>(), + S.template getValue<-2, 0, 2>(), S.template getValue<-2, 0, 1>(), + S.template getValue<-2, 0,-1>(), S.template getValue<-2, 0,-2>(), + S.template getValue<-1, 0, 2>(), S.template getValue<-1, 0, 1>(), + S.template getValue<-1, 0,-1>(), S.template getValue<-1, 0,-2>() ); + } + + template + static typename Stencil::ValueType inYandZ(const Stencil& S) + { + return crossdifference( + S.template getValue< 0, 2, 2>(), S.template getValue< 0, 2, 1>(), + S.template getValue< 0, 2,-1>(), S.template getValue< 0, 2,-2>(), + S.template getValue< 0, 1, 2>(), S.template getValue< 0, 1, 1>(), + S.template getValue< 0, 1,-1>(), S.template getValue< 0, 1,-2>(), + S.template getValue< 0,-2, 2>(), S.template getValue< 0,-2, 1>(), + S.template getValue< 0,-2,-1>(), S.template getValue< 0,-2,-2>(), + S.template getValue< 0,-1, 2>(), S.template getValue< 0,-1, 1>(), + S.template getValue< 0,-1,-1>(), S.template getValue< 0,-1,-2>() ); + } +}; + + +template<> +struct D2 +{ + // the difference opperator + template + static ValueType difference(const ValueType& xp3, const ValueType& xp2, const ValueType& xp1, + const ValueType& xp0, + const ValueType& xm1, const ValueType& xm2, const ValueType& xm3) + { + return ValueType(1./90.)*(xp3 + xm3) - ValueType(3./20.)*(xp2 + xm2) + + ValueType(1.5)*(xp1 + xm1) - ValueType(49./18.)*xp0; + } + + template + static ValueType crossdifference( const ValueType& xp1yp1,const ValueType& xm1yp1, + const ValueType& xp1ym1,const ValueType& xm1ym1, + const ValueType& xp2yp1,const ValueType& xm2yp1, + const ValueType& xp2ym1,const ValueType& xm2ym1, + const ValueType& xp3yp1,const ValueType& xm3yp1, + const ValueType& xp3ym1,const ValueType& xm3ym1, + const ValueType& xp1yp2,const ValueType& xm1yp2, + const ValueType& xp1ym2,const ValueType& xm1ym2, + const ValueType& xp2yp2,const ValueType& xm2yp2, + const ValueType& xp2ym2,const ValueType& xm2ym2, + const ValueType& xp3yp2,const ValueType& xm3yp2, + const ValueType& xp3ym2,const ValueType& xm3ym2, + const ValueType& xp1yp3,const ValueType& xm1yp3, + const ValueType& xp1ym3,const ValueType& xm1ym3, + const ValueType& xp2yp3,const ValueType& xm2yp3, + const ValueType& xp2ym3,const ValueType& xm2ym3, + const ValueType& xp3yp3,const ValueType& xm3yp3, + const ValueType& xp3ym3,const ValueType& xm3ym3 ) + { + ValueType tmp1 = + ValueType(0.7500)*(xp1yp1 - xm1yp1 - xp1ym1 + xm1ym1) - + ValueType(0.1500)*(xp2yp1 - xm2yp1 - xp2ym1 + xm2ym1) + + ValueType(1./60.)*(xp3yp1 - xm3yp1 - xp3ym1 + xm3ym1); + + ValueType tmp2 = + ValueType(0.7500)*(xp1yp2 - xm1yp2 - xp1ym2 + xm1ym2) - + ValueType(0.1500)*(xp2yp2 - xm2yp2 - xp2ym2 + xm2ym2) + + ValueType(1./60.)*(xp3yp2 - xm3yp2 - xp3ym2 + xm3ym2); + + ValueType tmp3 = + ValueType(0.7500)*(xp1yp3 - xm1yp3 - xp1ym3 + xm1ym3) - + ValueType(0.1500)*(xp2yp3 - xm2yp3 - xp2ym3 + xm2ym3) + + ValueType(1./60.)*(xp3yp3 - xm3yp3 - xp3ym3 + xm3ym3); + + return ValueType(0.75)*tmp1 - ValueType(0.15)*tmp2 + ValueType(1./60)*tmp3; + } + + // random access version + + template + static typename Accessor::ValueType inX(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 3, 0, 0)), grid.getValue(ijk.offsetBy( 2, 0, 0)), + grid.getValue(ijk.offsetBy( 1, 0, 0)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy(-1, 0, 0)), grid.getValue(ijk.offsetBy(-2, 0, 0)), + grid.getValue(ijk.offsetBy(-3, 0, 0)) ); + } + + template + static typename Accessor::ValueType inY(const Accessor& grid, const Coord& ijk) + { + return difference( + grid.getValue(ijk.offsetBy( 0, 3, 0)), grid.getValue(ijk.offsetBy( 0, 2, 0)), + grid.getValue(ijk.offsetBy( 0, 1, 0)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy( 0,-1, 0)), grid.getValue(ijk.offsetBy( 0,-2, 0)), + grid.getValue(ijk.offsetBy( 0,-3, 0)) ); + } + + template + static typename Accessor::ValueType inZ(const Accessor& grid, const Coord& ijk) + { + + return difference( + grid.getValue(ijk.offsetBy( 0, 0, 3)), grid.getValue(ijk.offsetBy( 0, 0, 2)), + grid.getValue(ijk.offsetBy( 0, 0, 1)), grid.getValue(ijk), + grid.getValue(ijk.offsetBy( 0, 0,-1)), grid.getValue(ijk.offsetBy( 0, 0,-2)), + grid.getValue(ijk.offsetBy( 0, 0,-3)) ); + } + + template + static typename Accessor::ValueType inXandY(const Accessor& grid, const Coord& ijk) + { + using ValueT = typename Accessor::ValueType; + ValueT tmp1 = + D1::inX(grid, ijk.offsetBy(0, 1, 0)) - + D1::inX(grid, ijk.offsetBy(0,-1, 0)); + ValueT tmp2 = + D1::inX(grid, ijk.offsetBy(0, 2, 0)) - + D1::inX(grid, ijk.offsetBy(0,-2, 0)); + ValueT tmp3 = + D1::inX(grid, ijk.offsetBy(0, 3, 0)) - + D1::inX(grid, ijk.offsetBy(0,-3, 0)); + return ValueT(0.75*tmp1 - 0.15*tmp2 + 1./60*tmp3); + } + + template + static typename Accessor::ValueType inXandZ(const Accessor& grid, const Coord& ijk) + { + using ValueT = typename Accessor::ValueType; + ValueT tmp1 = + D1::inX(grid, ijk.offsetBy(0, 0, 1)) - + D1::inX(grid, ijk.offsetBy(0, 0,-1)); + ValueT tmp2 = + D1::inX(grid, ijk.offsetBy(0, 0, 2)) - + D1::inX(grid, ijk.offsetBy(0, 0,-2)); + ValueT tmp3 = + D1::inX(grid, ijk.offsetBy(0, 0, 3)) - + D1::inX(grid, ijk.offsetBy(0, 0,-3)); + return ValueT(0.75*tmp1 - 0.15*tmp2 + 1./60*tmp3); + } + + template + static typename Accessor::ValueType inYandZ(const Accessor& grid, const Coord& ijk) + { + using ValueT = typename Accessor::ValueType; + ValueT tmp1 = + D1::inY(grid, ijk.offsetBy(0, 0, 1)) - + D1::inY(grid, ijk.offsetBy(0, 0,-1)); + ValueT tmp2 = + D1::inY(grid, ijk.offsetBy(0, 0, 2)) - + D1::inY(grid, ijk.offsetBy(0, 0,-2)); + ValueT tmp3 = + D1::inY(grid, ijk.offsetBy(0, 0, 3)) - + D1::inY(grid, ijk.offsetBy(0, 0,-3)); + return ValueT(0.75*tmp1 - 0.15*tmp2 + 1./60*tmp3); + } + + + // stencil access version + template + static typename Stencil::ValueType inX(const Stencil& S) + { + return difference( S.template getValue< 3, 0, 0>(), S.template getValue< 2, 0, 0>(), + S.template getValue< 1, 0, 0>(), S.template getValue< 0, 0, 0>(), + S.template getValue<-1, 0, 0>(), S.template getValue<-2, 0, 0>(), + S.template getValue<-3, 0, 0>() ); + } + + template + static typename Stencil::ValueType inY(const Stencil& S) + { + return difference( S.template getValue< 0, 3, 0>(), S.template getValue< 0, 2, 0>(), + S.template getValue< 0, 1, 0>(), S.template getValue< 0, 0, 0>(), + S.template getValue< 0,-1, 0>(), S.template getValue< 0,-2, 0>(), + S.template getValue< 0,-3, 0>() ); + + } + + template + static typename Stencil::ValueType inZ(const Stencil& S) + { + return difference( S.template getValue< 0, 0, 3>(), S.template getValue< 0, 0, 2>(), + S.template getValue< 0, 0, 1>(), S.template getValue< 0, 0, 0>(), + S.template getValue< 0, 0,-1>(), S.template getValue< 0, 0,-2>(), + S.template getValue< 0, 0,-3>() ); + } + + template + static typename Stencil::ValueType inXandY(const Stencil& S) + { + return crossdifference( S.template getValue< 1, 1, 0>(), S.template getValue<-1, 1, 0>(), + S.template getValue< 1,-1, 0>(), S.template getValue<-1,-1, 0>(), + S.template getValue< 2, 1, 0>(), S.template getValue<-2, 1, 0>(), + S.template getValue< 2,-1, 0>(), S.template getValue<-2,-1, 0>(), + S.template getValue< 3, 1, 0>(), S.template getValue<-3, 1, 0>(), + S.template getValue< 3,-1, 0>(), S.template getValue<-3,-1, 0>(), + S.template getValue< 1, 2, 0>(), S.template getValue<-1, 2, 0>(), + S.template getValue< 1,-2, 0>(), S.template getValue<-1,-2, 0>(), + S.template getValue< 2, 2, 0>(), S.template getValue<-2, 2, 0>(), + S.template getValue< 2,-2, 0>(), S.template getValue<-2,-2, 0>(), + S.template getValue< 3, 2, 0>(), S.template getValue<-3, 2, 0>(), + S.template getValue< 3,-2, 0>(), S.template getValue<-3,-2, 0>(), + S.template getValue< 1, 3, 0>(), S.template getValue<-1, 3, 0>(), + S.template getValue< 1,-3, 0>(), S.template getValue<-1,-3, 0>(), + S.template getValue< 2, 3, 0>(), S.template getValue<-2, 3, 0>(), + S.template getValue< 2,-3, 0>(), S.template getValue<-2,-3, 0>(), + S.template getValue< 3, 3, 0>(), S.template getValue<-3, 3, 0>(), + S.template getValue< 3,-3, 0>(), S.template getValue<-3,-3, 0>() ); + } + + template + static typename Stencil::ValueType inXandZ(const Stencil& S) + { + return crossdifference( S.template getValue< 1, 0, 1>(), S.template getValue<-1, 0, 1>(), + S.template getValue< 1, 0,-1>(), S.template getValue<-1, 0,-1>(), + S.template getValue< 2, 0, 1>(), S.template getValue<-2, 0, 1>(), + S.template getValue< 2, 0,-1>(), S.template getValue<-2, 0,-1>(), + S.template getValue< 3, 0, 1>(), S.template getValue<-3, 0, 1>(), + S.template getValue< 3, 0,-1>(), S.template getValue<-3, 0,-1>(), + S.template getValue< 1, 0, 2>(), S.template getValue<-1, 0, 2>(), + S.template getValue< 1, 0,-2>(), S.template getValue<-1, 0,-2>(), + S.template getValue< 2, 0, 2>(), S.template getValue<-2, 0, 2>(), + S.template getValue< 2, 0,-2>(), S.template getValue<-2, 0,-2>(), + S.template getValue< 3, 0, 2>(), S.template getValue<-3, 0, 2>(), + S.template getValue< 3, 0,-2>(), S.template getValue<-3, 0,-2>(), + S.template getValue< 1, 0, 3>(), S.template getValue<-1, 0, 3>(), + S.template getValue< 1, 0,-3>(), S.template getValue<-1, 0,-3>(), + S.template getValue< 2, 0, 3>(), S.template getValue<-2, 0, 3>(), + S.template getValue< 2, 0,-3>(), S.template getValue<-2, 0,-3>(), + S.template getValue< 3, 0, 3>(), S.template getValue<-3, 0, 3>(), + S.template getValue< 3, 0,-3>(), S.template getValue<-3, 0,-3>() ); + } + + template + static typename Stencil::ValueType inYandZ(const Stencil& S) + { + return crossdifference( S.template getValue< 0, 1, 1>(), S.template getValue< 0,-1, 1>(), + S.template getValue< 0, 1,-1>(), S.template getValue< 0,-1,-1>(), + S.template getValue< 0, 2, 1>(), S.template getValue< 0,-2, 1>(), + S.template getValue< 0, 2,-1>(), S.template getValue< 0,-2,-1>(), + S.template getValue< 0, 3, 1>(), S.template getValue< 0,-3, 1>(), + S.template getValue< 0, 3,-1>(), S.template getValue< 0,-3,-1>(), + S.template getValue< 0, 1, 2>(), S.template getValue< 0,-1, 2>(), + S.template getValue< 0, 1,-2>(), S.template getValue< 0,-1,-2>(), + S.template getValue< 0, 2, 2>(), S.template getValue< 0,-2, 2>(), + S.template getValue< 0, 2,-2>(), S.template getValue< 0,-2,-2>(), + S.template getValue< 0, 3, 2>(), S.template getValue< 0,-3, 2>(), + S.template getValue< 0, 3,-2>(), S.template getValue< 0,-3,-2>(), + S.template getValue< 0, 1, 3>(), S.template getValue< 0,-1, 3>(), + S.template getValue< 0, 1,-3>(), S.template getValue< 0,-1,-3>(), + S.template getValue< 0, 2, 3>(), S.template getValue< 0,-2, 3>(), + S.template getValue< 0, 2,-3>(), S.template getValue< 0,-2,-3>(), + S.template getValue< 0, 3, 3>(), S.template getValue< 0,-3, 3>(), + S.template getValue< 0, 3,-3>(), S.template getValue< 0,-3,-3>() ); + } + +}; + +} // end math namespace +} // namespace OPENVDB_VERSION_NAME +} // end openvdb namespace + +#endif // OPENVDB_MATH_FINITEDIFFERENCE_HAS_BEEN_INCLUDED diff --git a/openvdb/math/LegacyFrustum.h b/openvdb/math/LegacyFrustum.h new file mode 100644 index 00000000..d2632e8c --- /dev/null +++ b/openvdb/math/LegacyFrustum.h @@ -0,0 +1,165 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file math/LegacyFrustum.h + +#ifndef OPENVDB_MATH_LEGACYFRUSTUM_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_LEGACYFRUSTUM_HAS_BEEN_INCLUDED + +#include +#include // for Real typedef +#include "Coord.h" +#include "Mat4.h" +#include "Vec3.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { +namespace internal { + +/// @brief LegacyFrustum class used at DreamWorks for converting old vdb files. +class LegacyFrustum +{ +public: + LegacyFrustum(std::istream& is) + { + // First read in the old transform's base class. + // the "extents" + Vec3i tmpMin, tmpMax; + is.read(reinterpret_cast(&tmpMin), sizeof(Vec3i::ValueType) * 3); + is.read(reinterpret_cast(&tmpMax), sizeof(Vec3i::ValueType) * 3); + + Coord tmpMinCoord(tmpMin); + Coord tmpMaxCoord(tmpMax); + + // set the extents + mExtents = CoordBBox(tmpMinCoord, tmpMaxCoord); + + // read the old-frustum class member data + //Mat4d tmpW2C; + Mat4d tmpW2C, tmpC2S, tmpS2C, tmpWorldToLocal; + Mat4d tmpS2U, tmpXYLocalToUnit, tmpZLocalToUnit; + Real tmpWindow[6]; + Real tmpPadding; + + //Mat4d tmpXYUnitToLocal, tmpZUnitToLocal + + // read in each matrix. + is.read(reinterpret_cast(&tmpW2C), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&mC2W), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&tmpC2S), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&tmpS2C), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&tmpWorldToLocal), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&mLocalToWorld), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + + is.read(reinterpret_cast(&tmpWindow[0]), sizeof(Real)); + is.read(reinterpret_cast(&tmpWindow[1]), sizeof(Real)); + is.read(reinterpret_cast(&tmpWindow[2]), sizeof(Real)); + is.read(reinterpret_cast(&tmpWindow[3]), sizeof(Real)); + is.read(reinterpret_cast(&tmpWindow[4]), sizeof(Real)); + is.read(reinterpret_cast(&tmpWindow[5]), sizeof(Real)); + + is.read(reinterpret_cast(&tmpPadding), sizeof(Real)); + + is.read(reinterpret_cast(&tmpS2U), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&mXYUnitToLocal), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&tmpXYLocalToUnit), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&mZUnitToLocal), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + is.read(reinterpret_cast(&tmpZLocalToUnit), + sizeof(Mat4d::value_type) * Mat4d::size * Mat4d::size); + + + mNearPlane = tmpWindow[4]; + mFarPlane = tmpWindow[5]; + + // Look up the world space corners of the + // frustum grid. + mFrNearOrigin = unitToLocalFrustum(Vec3R(0,0,0)); + mFrFarOrigin = unitToLocalFrustum(Vec3R(0,0,1)); + + Vec3d frNearXTip = unitToLocalFrustum(Vec3R(1,0,0)); + Vec3d frNearYTip = unitToLocalFrustum(Vec3R(0,1,0)); + mFrNearXBasis = frNearXTip - mFrNearOrigin; + mFrNearYBasis = frNearYTip - mFrNearOrigin; + + Vec3R frFarXTip = unitToLocalFrustum(Vec3R(1,0,1)); + Vec3R frFarYTip = unitToLocalFrustum(Vec3R(0,1,1)); + mFrFarXBasis = frFarXTip - mFrFarOrigin; + mFrFarYBasis = frFarYTip - mFrFarOrigin; + } + + ~LegacyFrustum() {} + + const Mat4d& getCamXForm() const {return mC2W; } + + double getDepth() const {return (mFarPlane - mNearPlane); } + double getTaper() const { + + return getNearPlaneWidth() / getFarPlaneWidth(); + } + + double getNearPlaneWidth() const { + double nearPlaneWidth = (unitToWorld(Vec3d(0,0,0)) - unitToWorld(Vec3d(1,0,0))).length(); + return nearPlaneWidth; + } + + double getFarPlaneWidth() const { + double farPlaneWidth = (unitToWorld(Vec3d(0,0,1)) - unitToWorld(Vec3d(1,0,1))).length(); + return farPlaneWidth; + } + + double getNearPlaneDist() const { return mNearPlane; } + + const CoordBBox& getBBox() const {return mExtents; } + + Vec3d unitToWorld(const Vec3d& in) const {return mLocalToWorld.transform( unitToLocal(in) ); } + +private: + LegacyFrustum() {} + + Vec3d unitToLocal(const Vec3d& U) const { + + // We first find the local space coordinates + // of the unit point projected onto the near + // and far planes of the frustum by using a + // linear combination of the planes basis vectors + Vec3d nearLS = ( U[0] * mFrNearXBasis ) + ( U[1] * mFrNearYBasis ) + mFrNearOrigin; + Vec3d farLS = ( U[0] * mFrFarXBasis ) + ( U[1] * mFrFarYBasis ) + mFrFarOrigin; + + // then we lerp the two ws points in frustum z space + return U[2] * farLS + ( 1.0 - U[2] ) * nearLS; + } + + Vec3d unitToLocalFrustum(const Vec3d& u) const { + Vec3d fzu = mZUnitToLocal.transformH(u); + Vec3d fu = u; + fu[2] = fzu.z(); + return mXYUnitToLocal.transformH(fu); + } + +private: + Mat4d mC2W, mLocalToWorld, mXYUnitToLocal, mZUnitToLocal; + CoordBBox mExtents; + Vec3d mFrNearXBasis, mFrNearYBasis, mFrFarXBasis, mFrFarYBasis; + Vec3d mFrNearOrigin, mFrFarOrigin; + double mNearPlane, mFarPlane; +}; + +} // namespace internal +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_LEGACYFRUSTUM_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Maps.cc b/openvdb/math/Maps.cc new file mode 100644 index 00000000..15123059 --- /dev/null +++ b/openvdb/math/Maps.cc @@ -0,0 +1,262 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Maps.h" +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +namespace { + +using Mutex = tbb::mutex; +using Lock = Mutex::scoped_lock; + +// Declare this at file scope to ensure thread-safe initialization. +// NOTE: Do *NOT* move this into Maps.h or else we will need to pull in +// Windows.h with things like 'rad2' defined! +Mutex sInitMapRegistryMutex; + +} // unnamed namespace + + +//////////////////////////////////////// + + +// Caller is responsible for calling this function serially. +MapRegistry* +MapRegistry::staticInstance() +{ + static MapRegistry registry; + return ®istry; +} + + +MapRegistry* +MapRegistry::instance() +{ + Lock lock(sInitMapRegistryMutex); + return staticInstance(); +} + + +MapBase::Ptr +MapRegistry::createMap(const Name& name) +{ + Lock lock(sInitMapRegistryMutex); + MapDictionary::const_iterator iter = staticInstance()->mMap.find(name); + + if (iter == staticInstance()->mMap.end()) { + OPENVDB_THROW(LookupError, "Cannot create map of unregistered type " << name); + } + + return (iter->second)(); +} + + +bool +MapRegistry::isRegistered(const Name& name) +{ + Lock lock(sInitMapRegistryMutex); + return (staticInstance()->mMap.find(name) != staticInstance()->mMap.end()); +} + + +void +MapRegistry::registerMap(const Name& name, MapBase::MapFactory factory) +{ + Lock lock(sInitMapRegistryMutex); + + if (staticInstance()->mMap.find(name) != staticInstance()->mMap.end()) { + OPENVDB_THROW(KeyError, "Map type " << name << " is already registered"); + } + + staticInstance()->mMap[name] = factory; +} + + +void +MapRegistry::unregisterMap(const Name& name) +{ + Lock lock(sInitMapRegistryMutex); + staticInstance()->mMap.erase(name); +} + + +void +MapRegistry::clear() +{ + Lock lock(sInitMapRegistryMutex); + staticInstance()->mMap.clear(); +} + + +//////////////////////////////////////// + +// Utility methods for decomposition + + +SymmetricMap::Ptr +createSymmetricMap(const Mat3d& m) +{ + // test that the mat3 is a rotation || reflection + if (!isSymmetric(m)) { + OPENVDB_THROW(ArithmeticError, + "3x3 Matrix initializing symmetric map was not symmetric"); + } + Vec3d eigenValues; + Mat3d Umatrix; + + bool converged = math::diagonalizeSymmetricMatrix(m, Umatrix, eigenValues); + if (!converged) { + OPENVDB_THROW(ArithmeticError, "Diagonalization of the symmetric matrix failed"); + } + + UnitaryMap rotation(Umatrix); + ScaleMap diagonal(eigenValues); + CompoundMap first(rotation, diagonal); + + UnitaryMap rotationInv(Umatrix.transpose()); + return SymmetricMap::Ptr( new SymmetricMap(first, rotationInv)); +} + + +PolarDecomposedMap::Ptr +createPolarDecomposedMap(const Mat3d& m) +{ + // Because our internal libary left-multiplies vectors against matrices + // we are constructing M = Symmetric * Unitary instead of the more + // standard M = Unitary * Symmetric + Mat3d unitary, symmetric, mat3 = m.transpose(); + + // factor mat3 = U * S where U is unitary and S is symmetric + bool gotPolar = math::polarDecomposition(mat3, unitary, symmetric); + if (!gotPolar) { + OPENVDB_THROW(ArithmeticError, "Polar decomposition of transform failed"); + } + // put the result in a polar map and then copy it into the output polar + UnitaryMap unitary_map(unitary.transpose()); + SymmetricMap::Ptr symmetric_map = createSymmetricMap(symmetric); + + return PolarDecomposedMap::Ptr(new PolarDecomposedMap(*symmetric_map, unitary_map)); +} + + +FullyDecomposedMap::Ptr +createFullyDecomposedMap(const Mat4d& m) +{ + if (!isAffine(m)) { + OPENVDB_THROW(ArithmeticError, + "4x4 Matrix initializing Decomposition map was not affine"); + } + + TranslationMap translate(m.getTranslation()); + PolarDecomposedMap::Ptr polar = createPolarDecomposedMap(m.getMat3()); + + UnitaryAndTranslationMap rotationAndTranslate(polar->secondMap(), translate); + + return FullyDecomposedMap::Ptr(new FullyDecomposedMap(polar->firstMap(), rotationAndTranslate)); +} + + +MapBase::Ptr +simplify(AffineMap::Ptr affine) +{ + if (affine->isScale()) { // can be simplified into a ScaleMap + + Vec3d scale = affine->applyMap(Vec3d(1,1,1)); + if (isApproxEqual(scale[0], scale[1]) && isApproxEqual(scale[0], scale[2])) { + return MapBase::Ptr(new UniformScaleMap(scale[0])); + } else { + return MapBase::Ptr(new ScaleMap(scale)); + } + + } else if (affine->isScaleTranslate()) { // can be simplified into a ScaleTranslateMap + + Vec3d translate = affine->applyMap(Vec3d(0,0,0)); + Vec3d scale = affine->applyMap(Vec3d(1,1,1)) - translate; + + if (isApproxEqual(scale[0], scale[1]) && isApproxEqual(scale[0], scale[2])) { + return MapBase::Ptr(new UniformScaleTranslateMap(scale[0], translate)); + } else { + return MapBase::Ptr(new ScaleTranslateMap(scale, translate)); + } + } + + // could not simplify the general Affine map. + return StaticPtrCast(affine); +} + + +Mat4d +approxInverse(const Mat4d& mat4d) +{ + if (std::abs(mat4d.det()) >= 3 * math::Tolerance::value()) { + try { + return mat4d.inverse(); + } catch (ArithmeticError& ) { + // Mat4 code couldn't invert. + } + } + + const Mat3d mat3 = mat4d.getMat3(); + const Mat3d mat3T = mat3.transpose(); + const Vec3d trans = mat4d.getTranslation(); + + // absolute tolerance used for the symmetric test. + const double tol = 1.e-6; + + // only create the pseudoInverse for symmetric + bool symmetric = true; + for (int i = 0; i < 3; ++i ) { + for (int j = 0; j < 3; ++j ) { + if (!isApproxEqual(mat3[i][j], mat3T[i][j], tol)) { + symmetric = false; + } + } + } + + if (!symmetric) { + + // not symmetric, so just zero out the mat3 inverse and reverse the translation + + Mat4d result = Mat4d::zero(); + result.setTranslation(-trans); + result[3][3] = 1.f; + return result; + + } else { + + // compute the pseudo inverse + + Mat3d eigenVectors; + Vec3d eigenValues; + + diagonalizeSymmetricMatrix(mat3, eigenVectors, eigenValues); + + Mat3d d = Mat3d::identity(); + for (int i = 0; i < 3; ++i ) { + if (std::abs(eigenValues[i]) < 10.0 * math::Tolerance::value()) { + d[i][i] = 0.f; + } else { + d[i][i] = 1.f/eigenValues[i]; + } + } + // assemble the pseudo inverse + + Mat3d pseudoInv = eigenVectors * d * eigenVectors.transpose(); + Vec3d invTrans = -trans * pseudoInv; + + Mat4d result = Mat4d::identity(); + result.setMat3(pseudoInv); + result.setTranslation(invTrans); + + return result; + } +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/math/Maps.h b/openvdb/math/Maps.h new file mode 100644 index 00000000..47a153aa --- /dev/null +++ b/openvdb/math/Maps.h @@ -0,0 +1,2692 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file math/Maps.h + +#ifndef OPENVDB_MATH_MAPS_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_MAPS_HAS_BEEN_INCLUDED + +#include "Math.h" +#include "Mat4.h" +#include "Vec3.h" +#include "BBox.h" +#include "Coord.h" +#include // for io::getFormatVersion() +#include +#include +#include // for std::abs() +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + + +//////////////////////////////////////// + +/// Forward declarations of the different map types + +class MapBase; +class ScaleMap; +class TranslationMap; +class ScaleTranslateMap; +class UniformScaleMap; +class UniformScaleTranslateMap; +class AffineMap; +class UnitaryMap; +class NonlinearFrustumMap; + +template class CompoundMap; + +using UnitaryAndTranslationMap = CompoundMap; +using SpectralDecomposedMap = CompoundMap, UnitaryMap>; +using SymmetricMap = SpectralDecomposedMap; +using FullyDecomposedMap = CompoundMap; +using PolarDecomposedMap = CompoundMap; + + +//////////////////////////////////////// + +/// Map traits + +template struct is_linear { static const bool value = false; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; +template<> struct is_linear { static const bool value = true; }; + +template struct is_linear > { + static const bool value = is_linear::value && is_linear::value; +}; + + +template struct is_uniform_scale { static const bool value = false; }; +template<> struct is_uniform_scale { static const bool value = true; }; + +template struct is_uniform_scale_translate { static const bool value = false; }; +template<> struct is_uniform_scale_translate { static const bool value = true; }; +template<> struct is_uniform_scale_translate { + static const bool value = true; +}; + + +template struct is_scale { static const bool value = false; }; +template<> struct is_scale { static const bool value = true; }; + +template struct is_scale_translate { static const bool value = false; }; +template<> struct is_scale_translate { static const bool value = true; }; + + +template struct is_uniform_diagonal_jacobian { + static const bool value = is_uniform_scale::value || is_uniform_scale_translate::value; +}; + +template struct is_diagonal_jacobian { + static const bool value = is_scale::value || is_scale_translate::value; +}; + + +//////////////////////////////////////// + +/// Utility methods + +/// @brief Create a SymmetricMap from a symmetric matrix. +/// Decomposes the map into Rotation Diagonal Rotation^T +OPENVDB_API SharedPtr createSymmetricMap(const Mat3d& m); + + +/// @brief General decomposition of a Matrix into a Unitary (e.g. rotation) +/// following a Symmetric (e.g. stretch & shear) +OPENVDB_API SharedPtr createFullyDecomposedMap(const Mat4d& m); + + +/// @brief Decomposes a general linear into translation following polar decomposition. +/// +/// T U S where: +/// +/// T: Translation +/// U: Unitary (rotation or reflection) +/// S: Symmetric +/// +/// @note: the Symmetric is automatically decomposed into Q D Q^T, where +/// Q is rotation and D is diagonal. +OPENVDB_API SharedPtr createPolarDecomposedMap(const Mat3d& m); + + +/// @brief reduces an AffineMap to a ScaleMap or a ScaleTranslateMap when it can +OPENVDB_API SharedPtr simplify(SharedPtr affine); + +/// @brief Returns the left pseudoInverse of the input matrix when the 3x3 part is symmetric +/// otherwise it zeros the 3x3 and reverses the translation. +OPENVDB_API Mat4d approxInverse(const Mat4d& mat); + + +//////////////////////////////////////// + + +/// @brief Abstract base class for maps +class OPENVDB_API MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + using MapFactory = Ptr (*)(); + + MapBase(const MapBase&) = default; + virtual ~MapBase() = default; + + virtual SharedPtr getAffineMap() const = 0; + + /// Return the name of this map's concrete type (e.g., @c "AffineMap"). + virtual Name type() const = 0; + + /// Return @c true if this map is of concrete type @c MapT (e.g., AffineMap). + template bool isType() const { return this->type() == MapT::mapType(); } + + /// Return @c true if this map is equal to the given map. + virtual bool isEqual(const MapBase& other) const = 0; + + /// Return @c true if this map is linear. + virtual bool isLinear() const = 0; + /// Return @c true if the spacing between the image of latice is uniform in all directions + virtual bool hasUniformScale() const = 0; + + virtual Vec3d applyMap(const Vec3d& in) const = 0; + virtual Vec3d applyInverseMap(const Vec3d& in) const = 0; + + //@{ + /// @brief Apply the Inverse Jacobian Transpose of this map to a vector. + /// For a linear map this is equivalent to applying the transpose of + /// inverse map excluding translation. + virtual Vec3d applyIJT(const Vec3d& in) const = 0; + virtual Vec3d applyIJT(const Vec3d& in, const Vec3d& domainPos) const = 0; + //@} + + virtual Mat3d applyIJC(const Mat3d& m) const = 0; + virtual Mat3d applyIJC(const Mat3d& m, const Vec3d& v, const Vec3d& domainPos) const = 0; + + + virtual double determinant() const = 0; + virtual double determinant(const Vec3d&) const = 0; + + + //@{ + /// @brief Method to return the local size of a voxel. + /// When a location is specified as an argument, it is understood to be + /// be in the domain of the map (i.e. index space) + virtual Vec3d voxelSize() const = 0; + virtual Vec3d voxelSize(const Vec3d&) const = 0; + //@} + + virtual void read(std::istream&) = 0; + virtual void write(std::ostream&) const = 0; + + virtual std::string str() const = 0; + + virtual MapBase::Ptr copy() const = 0; + + //@{ + /// @brief Methods to update the map + virtual MapBase::Ptr preRotate(double radians, Axis axis = X_AXIS) const = 0; + virtual MapBase::Ptr preTranslate(const Vec3d&) const = 0; + virtual MapBase::Ptr preScale(const Vec3d&) const = 0; + virtual MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const = 0; + + virtual MapBase::Ptr postRotate(double radians, Axis axis = X_AXIS) const = 0; + virtual MapBase::Ptr postTranslate(const Vec3d&) const = 0; + virtual MapBase::Ptr postScale(const Vec3d&) const = 0; + virtual MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const = 0; + //@} + + //@{ + /// @brief Apply the Jacobian of this map to a vector. + /// For a linear map this is equivalent to applying the map excluding translation. + /// @warning Houdini 12.5 uses an earlier version of OpenVDB, and maps created + /// with that version lack a virtual table entry for this method. Do not call + /// this method from Houdini 12.5. + virtual Vec3d applyJacobian(const Vec3d& in) const = 0; + virtual Vec3d applyJacobian(const Vec3d& in, const Vec3d& domainPos) const = 0; + //@} + + //@{ + /// @brief Apply the InverseJacobian of this map to a vector. + /// For a linear map this is equivalent to applying the map inverse excluding translation. + /// @warning Houdini 12.5 uses an earlier version of OpenVDB, and maps created + /// with that version lack a virtual table entry for this method. Do not call + /// this method from Houdini 12.5. + virtual Vec3d applyInverseJacobian(const Vec3d& in) const = 0; + virtual Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d& domainPos) const = 0; + //@} + + + //@{ + /// @brief Apply the Jacobian transpose of this map to a vector. + /// For a linear map this is equivalent to applying the transpose of the map + /// excluding translation. + /// @warning Houdini 12.5 uses an earlier version of OpenVDB, and maps created + /// with that version lack a virtual table entry for this method. Do not call + /// this method from Houdini 12.5. + virtual Vec3d applyJT(const Vec3d& in) const = 0; + virtual Vec3d applyJT(const Vec3d& in, const Vec3d& domainPos) const = 0; + //@} + + /// @brief Return a new map representing the inverse of this map. + /// @throw NotImplementedError if the map is a NonlinearFrustumMap. + /// @warning Houdini 12.5 uses an earlier version of OpenVDB, and maps created + /// with that version lack a virtual table entry for this method. Do not call + /// this method from Houdini 12.5. + virtual MapBase::Ptr inverseMap() const = 0; + +protected: + MapBase() {} + + template + static bool isEqualBase(const MapT& self, const MapBase& other) + { + return other.isType() && (self == *static_cast(&other)); + } +}; + + +//////////////////////////////////////// + + +/// @brief Threadsafe singleton object for accessing the map type-name dictionary. +/// Associates a map type-name with a factory function. +class OPENVDB_API MapRegistry +{ +public: + using MapDictionary = std::map; + + static MapRegistry* instance(); + + /// Create a new map of the given (registered) type name. + static MapBase::Ptr createMap(const Name&); + + /// Return @c true if the given map type name is registered. + static bool isRegistered(const Name&); + + /// Register a map type along with a factory function. + static void registerMap(const Name&, MapBase::MapFactory); + + /// Remove a map type from the registry. + static void unregisterMap(const Name&); + + /// Clear the map type registry. + static void clear(); + +private: + MapRegistry() {} + + static MapRegistry* staticInstance(); + + MapDictionary mMap; +}; + + +//////////////////////////////////////// + + +/// @brief A general linear transform using homogeneous coordinates to perform +/// rotation, scaling, shear and translation +class OPENVDB_API AffineMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + AffineMap(): + mMatrix(Mat4d::identity()), + mMatrixInv(Mat4d::identity()), + mJacobianInv(Mat3d::identity()), + mDeterminant(1), + mVoxelSize(Vec3d(1,1,1)), + mIsDiagonal(true), + mIsIdentity(true) + // the default constructor for translation is zero + { + } + + AffineMap(const Mat3d& m) + { + Mat4d mat4(Mat4d::identity()); + mat4.setMat3(m); + mMatrix = mat4; + updateAcceleration(); + } + + AffineMap(const Mat4d& m): mMatrix(m) + { + if (!isAffine(m)) { + OPENVDB_THROW(ArithmeticError, + "Tried to initialize an affine transform from a non-affine 4x4 matrix"); + } + updateAcceleration(); + } + + AffineMap(const AffineMap& other): + MapBase(other), + mMatrix(other.mMatrix), + mMatrixInv(other.mMatrixInv), + mJacobianInv(other.mJacobianInv), + mDeterminant(other.mDeterminant), + mVoxelSize(other.mVoxelSize), + mIsDiagonal(other.mIsDiagonal), + mIsIdentity(other.mIsIdentity) + { + } + + /// @brief constructor that merges the matrixes for two affine maps + AffineMap(const AffineMap& first, const AffineMap& second): + mMatrix(first.mMatrix * second.mMatrix) + { + updateAcceleration(); + } + + ~AffineMap() override = default; + + /// Return a MapBase::Ptr to a new AffineMap + static MapBase::Ptr create() { return MapBase::Ptr(new AffineMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new AffineMap(*this)); } + + MapBase::Ptr inverseMap() const override { return MapBase::Ptr(new AffineMap(mMatrixInv)); } + + static bool isRegistered() { return MapRegistry::isRegistered(AffineMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + AffineMap::mapType(), + AffineMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("AffineMap"); } + + /// Return @c true (an AffineMap is always linear). + bool isLinear() const override { return true; } + + /// Return @c false ( test if this is unitary with translation ) + bool hasUniformScale() const override + { + Mat3d mat = mMatrix.getMat3(); + const double det = mat.det(); + if (isApproxEqual(det, double(0))) { + return false; + } else { + mat *= (1.0 / pow(std::abs(det), 1.0/3.0)); + return isUnitary(mat); + } + } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const AffineMap& other) const + { + // the Mat.eq() is approximate + if (!mMatrix.eq(other.mMatrix)) { return false; } + if (!mMatrixInv.eq(other.mMatrixInv)) { return false; } + return true; + } + + bool operator!=(const AffineMap& other) const { return !(*this == other); } + + AffineMap& operator=(const AffineMap& other) + { + mMatrix = other.mMatrix; + mMatrixInv = other.mMatrixInv; + + mJacobianInv = other.mJacobianInv; + mDeterminant = other.mDeterminant; + mVoxelSize = other.mVoxelSize; + mIsDiagonal = other.mIsDiagonal; + mIsIdentity = other.mIsIdentity; + return *this; + } + /// Return the image of @c in under the map + Vec3d applyMap(const Vec3d& in) const override { return in * mMatrix; } + /// Return the pre-image of @c in under the map + Vec3d applyInverseMap(const Vec3d& in) const override {return in * mMatrixInv; } + + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in, const Vec3d&) const override { return applyJacobian(in); } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in) const override { return mMatrix.transform3x3(in); } + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d&) const override { + return applyInverseJacobian(in); + } + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { + return mMatrixInv.transform3x3(in); + } + + /// Return the Jacobian Transpose of the map applied to @a in. + /// This tranforms range-space gradients to domain-space gradients + Vec3d applyJT(const Vec3d& in, const Vec3d&) const override { return applyJT(in); } + /// Return the Jacobian Transpose of the map applied to @a in. + Vec3d applyJT(const Vec3d& in) const override { + const double* m = mMatrix.asPointer(); + return Vec3d( m[ 0] * in[0] + m[ 1] * in[1] + m[ 2] * in[2], + m[ 4] * in[0] + m[ 5] * in[1] + m[ 6] * in[2], + m[ 8] * in[0] + m[ 9] * in[1] + m[10] * in[2] ); + } + + /// Return the transpose of the inverse Jacobian of the map applied to @a in. + Vec3d applyIJT(const Vec3d& in, const Vec3d&) const override { return applyIJT(in); } + /// Return the transpose of the inverse Jacobian of the map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override { return in * mJacobianInv; } + /// Return the Jacobian Curvature: zero for a linear map + Mat3d applyIJC(const Mat3d& m) const override { + return mJacobianInv.transpose()* m * mJacobianInv; + } + Mat3d applyIJC(const Mat3d& in, const Vec3d& , const Vec3d& ) const override { + return applyIJC(in); + } + /// Return the determinant of the Jacobian, ignores argument + double determinant(const Vec3d& ) const override { return determinant(); } + /// Return the determinant of the Jacobian + double determinant() const override { return mDeterminant; } + + //@{ + /// @brief Return the lengths of the images of the segments + /// (0,0,0)-(1,0,0), (0,0,0)-(0,1,0) and (0,0,0)-(0,0,1). + Vec3d voxelSize() const override { return mVoxelSize; } + Vec3d voxelSize(const Vec3d&) const override { return voxelSize(); } + //@} + + /// Return @c true if the underlying matrix is approximately an identity + bool isIdentity() const { return mIsIdentity; } + /// Return @c true if the underylying matrix is diagonal + bool isDiagonal() const { return mIsDiagonal; } + /// Return @c true if the map is equivalent to a ScaleMap + bool isScale() const { return isDiagonal(); } + /// Return @c true if the map is equivalent to a ScaleTranslateMap + bool isScaleTranslate() const { return math::isDiagonal(mMatrix.getMat3()); } + + + // Methods that modify the existing affine map + + //@{ + /// @brief Modify the existing affine map by pre-applying the given operation. + void accumPreRotation(Axis axis, double radians) + { + mMatrix.preRotate(axis, radians); + updateAcceleration(); + } + void accumPreScale(const Vec3d& v) + { + mMatrix.preScale(v); + updateAcceleration(); + } + void accumPreTranslation(const Vec3d& v) + { + mMatrix.preTranslate(v); + updateAcceleration(); + } + void accumPreShear(Axis axis0, Axis axis1, double shear) + { + mMatrix.preShear(axis0, axis1, shear); + updateAcceleration(); + } + //@} + + + //@{ + /// @brief Modify the existing affine map by post-applying the given operation. + void accumPostRotation(Axis axis, double radians) + { + mMatrix.postRotate(axis, radians); + updateAcceleration(); + } + void accumPostScale(const Vec3d& v) + { + mMatrix.postScale(v); + updateAcceleration(); + } + void accumPostTranslation(const Vec3d& v) + { + mMatrix.postTranslate(v); + updateAcceleration(); + } + void accumPostShear(Axis axis0, Axis axis1, double shear) + { + mMatrix.postShear(axis0, axis1, shear); + updateAcceleration(); + } + //@} + + + /// read serialization + void read(std::istream& is) override { mMatrix.read(is); updateAcceleration(); } + /// write serialization + void write(std::ostream& os) const override { mMatrix.write(os); } + /// string serialization, useful for debugging + std::string str() const override + { + std::ostringstream buffer; + buffer << " - mat4:\n" << mMatrix.str() << std::endl; + buffer << " - voxel dimensions: " << mVoxelSize << std::endl; + return buffer.str(); + } + + /// on-demand decomposition of the affine map + SharedPtr createDecomposedMap() + { + return createFullyDecomposedMap(mMatrix); + } + + /// Return AffineMap::Ptr to a deep copy of the current AffineMap + AffineMap::Ptr getAffineMap() const override { return AffineMap::Ptr(new AffineMap(*this)); } + + /// Return AffineMap::Ptr to the inverse of this map + AffineMap::Ptr inverse() const { return AffineMap::Ptr(new AffineMap(mMatrixInv)); } + + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the appropraite operation. + MapBase::Ptr preRotate(double radians, Axis axis = X_AXIS) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreRotation(axis, radians); + return simplify(affineMap); + } + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreTranslation(t); + return StaticPtrCast(affineMap); + } + MapBase::Ptr preScale(const Vec3d& s) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreScale(s); + return StaticPtrCast(affineMap); + } + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of postfixing the appropraite operation. + MapBase::Ptr postRotate(double radians, Axis axis = X_AXIS) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostRotation(axis, radians); + return simplify(affineMap); + } + MapBase::Ptr postTranslate(const Vec3d& t) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostTranslation(t); + return StaticPtrCast(affineMap); + } + MapBase::Ptr postScale(const Vec3d& s) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostScale(s); + return StaticPtrCast(affineMap); + } + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + + /// Return the matrix representation of this AffineMap + Mat4d getMat4() const { return mMatrix;} + const Mat4d& getConstMat4() const {return mMatrix;} + const Mat3d& getConstJacobianInv() const {return mJacobianInv;} + +private: + void updateAcceleration() { + Mat3d mat3 = mMatrix.getMat3(); + mDeterminant = mat3.det(); + + if (std::abs(mDeterminant) < (3.0 * math::Tolerance::value())) { + OPENVDB_THROW(ArithmeticError, + "Tried to initialize an affine transform from a nearly singular matrix"); + } + mMatrixInv = mMatrix.inverse(); + mJacobianInv = mat3.inverse().transpose(); + mIsDiagonal = math::isDiagonal(mMatrix); + mIsIdentity = math::isIdentity(mMatrix); + Vec3d pos = applyMap(Vec3d(0,0,0)); + mVoxelSize(0) = (applyMap(Vec3d(1,0,0)) - pos).length(); + mVoxelSize(1) = (applyMap(Vec3d(0,1,0)) - pos).length(); + mVoxelSize(2) = (applyMap(Vec3d(0,0,1)) - pos).length(); + } + + // the underlying matrix + Mat4d mMatrix; + + // stored for acceleration + Mat4d mMatrixInv; + Mat3d mJacobianInv; + double mDeterminant; + Vec3d mVoxelSize; + bool mIsDiagonal, mIsIdentity; +}; // class AffineMap + + +//////////////////////////////////////// + + +/// @brief A specialized Affine transform that scales along the principal axis +/// the scaling need not be uniform in the three-directions +class OPENVDB_API ScaleMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + ScaleMap(): MapBase(), mScaleValues(Vec3d(1,1,1)), mVoxelSize(Vec3d(1,1,1)), + mScaleValuesInverse(Vec3d(1,1,1)), + mInvScaleSqr(1,1,1), mInvTwiceScale(0.5,0.5,0.5){} + + ScaleMap(const Vec3d& scale): + MapBase(), + mScaleValues(scale), + mVoxelSize(Vec3d(std::abs(scale(0)),std::abs(scale(1)), std::abs(scale(2)))) + { + double determinant = scale[0]* scale[1] * scale[2]; + if (std::abs(determinant) < 3.0 * math::Tolerance::value()) { + OPENVDB_THROW(ArithmeticError, "Non-zero scale values required"); + } + mScaleValuesInverse = 1.0 / mScaleValues; + mInvScaleSqr = mScaleValuesInverse * mScaleValuesInverse; + mInvTwiceScale = mScaleValuesInverse / 2; + } + + ScaleMap(const ScaleMap& other): + MapBase(), + mScaleValues(other.mScaleValues), + mVoxelSize(other.mVoxelSize), + mScaleValuesInverse(other.mScaleValuesInverse), + mInvScaleSqr(other.mInvScaleSqr), + mInvTwiceScale(other.mInvTwiceScale) + { + } + + ~ScaleMap() override = default; + + /// Return a MapBase::Ptr to a new ScaleMap + static MapBase::Ptr create() { return MapBase::Ptr(new ScaleMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new ScaleMap(*this)); } + + MapBase::Ptr inverseMap() const override { + return MapBase::Ptr(new ScaleMap(mScaleValuesInverse)); + } + + static bool isRegistered() { return MapRegistry::isRegistered(ScaleMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + ScaleMap::mapType(), + ScaleMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("ScaleMap"); } + + /// Return @c true (a ScaleMap is always linear). + bool isLinear() const override { return true; } + + /// Return @c true if the values have the same magitude (eg. -1, 1, -1 would be a rotation). + bool hasUniformScale() const override + { + bool value = isApproxEqual( + std::abs(mScaleValues.x()), std::abs(mScaleValues.y()), double(5e-7)); + value = value && isApproxEqual( + std::abs(mScaleValues.x()), std::abs(mScaleValues.z()), double(5e-7)); + return value; + } + + /// Return the image of @c in under the map + Vec3d applyMap(const Vec3d& in) const override + { + return Vec3d( + in.x() * mScaleValues.x(), + in.y() * mScaleValues.y(), + in.z() * mScaleValues.z()); + } + /// Return the pre-image of @c in under the map + Vec3d applyInverseMap(const Vec3d& in) const override + { + return Vec3d( + in.x() * mScaleValuesInverse.x(), + in.y() * mScaleValuesInverse.y(), + in.z() * mScaleValuesInverse.z()); + } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in, const Vec3d&) const override { return applyJacobian(in); } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in) const override { return applyMap(in); } + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d&) const override { + return applyInverseJacobian(in); + } + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { return applyInverseMap(in); } + + /// @brief Return the Jacobian Transpose of the map applied to @a in. + /// @details This tranforms range-space gradients to domain-space gradients + Vec3d applyJT(const Vec3d& in, const Vec3d&) const override { return applyJT(in); } + /// Return the Jacobian Transpose of the map applied to @a in. + Vec3d applyJT(const Vec3d& in) const override { return applyMap(in); } + + /// @brief Return the transpose of the inverse Jacobian of the map applied to @a in. + /// @details Ignores second argument + Vec3d applyIJT(const Vec3d& in, const Vec3d&) const override { return applyIJT(in);} + /// Return the transpose of the inverse Jacobian of the map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override { return applyInverseMap(in); } + /// Return the Jacobian Curvature: zero for a linear map + Mat3d applyIJC(const Mat3d& in) const override + { + Mat3d tmp; + for (int i = 0; i < 3; i++) { + tmp.setRow(i, in.row(i) * mScaleValuesInverse(i)); + } + for (int i = 0; i < 3; i++) { + tmp.setCol(i, tmp.col(i) * mScaleValuesInverse(i)); + } + return tmp; + } + Mat3d applyIJC(const Mat3d& in, const Vec3d&, const Vec3d&) const override { + return applyIJC(in); + } + /// Return the product of the scale values, ignores argument + double determinant(const Vec3d&) const override { return determinant(); } + /// Return the product of the scale values + double determinant() const override { + return mScaleValues.x() * mScaleValues.y() * mScaleValues.z(); + } + + /// Return the scale values that define the map + const Vec3d& getScale() const {return mScaleValues;} + + /// Return the square of the scale. Used to optimize some finite difference calculations + const Vec3d& getInvScaleSqr() const { return mInvScaleSqr; } + /// Return 1/(2 scale). Used to optimize some finite difference calculations + const Vec3d& getInvTwiceScale() const { return mInvTwiceScale; } + /// Return 1/(scale) + const Vec3d& getInvScale() const { return mScaleValuesInverse; } + + //@{ + /// @brief Return the lengths of the images of the segments + /// (0,0,0) − 1,0,0), (0,0,0) − (0,1,0) and (0,0,0) − (0,0,1). + /// @details This is equivalent to the absolute values of the scale values + Vec3d voxelSize() const override { return mVoxelSize; } + Vec3d voxelSize(const Vec3d&) const override { return voxelSize(); } + //@} + + /// read serialization + void read(std::istream& is) override + { + mScaleValues.read(is); + mVoxelSize.read(is); + mScaleValuesInverse.read(is); + mInvScaleSqr.read(is); + mInvTwiceScale.read(is); + } + /// write serialization + void write(std::ostream& os) const override + { + mScaleValues.write(os); + mVoxelSize.write(os); + mScaleValuesInverse.write(os); + mInvScaleSqr.write(os); + mInvTwiceScale.write(os); + } + /// string serialization, useful for debuging + std::string str() const override + { + std::ostringstream buffer; + buffer << " - scale: " << mScaleValues << std::endl; + buffer << " - voxel dimensions: " << mVoxelSize << std::endl; + return buffer.str(); + } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const ScaleMap& other) const + { + // ::eq() uses a tolerance + if (!mScaleValues.eq(other.mScaleValues)) { return false; } + return true; + } + + bool operator!=(const ScaleMap& other) const { return !(*this == other); } + + /// Return a AffineMap equivalent to this map + AffineMap::Ptr getAffineMap() const override + { + return AffineMap::Ptr(new AffineMap(math::scale(mScaleValues))); + } + + + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the appropraite operation to the existing map + MapBase::Ptr preRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreRotation(axis, radians); + return simplify(affineMap); + } + + MapBase::Ptr preTranslate(const Vec3d&) const override; + MapBase::Ptr preScale(const Vec3d&) const override; + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the appropraite operation to the existing map. + MapBase::Ptr postRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostRotation(axis, radians); + return simplify(affineMap); + } + MapBase::Ptr postTranslate(const Vec3d&) const override; + MapBase::Ptr postScale(const Vec3d&) const override; + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + +private: + Vec3d mScaleValues, mVoxelSize, mScaleValuesInverse, mInvScaleSqr, mInvTwiceScale; +}; // class ScaleMap + + +/// @brief A specialized Affine transform that scales along the principal axis +/// the scaling is uniform in the three-directions +class OPENVDB_API UniformScaleMap: public ScaleMap +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + UniformScaleMap(): ScaleMap(Vec3d(1,1,1)) {} + UniformScaleMap(double scale): ScaleMap(Vec3d(scale, scale, scale)) {} + UniformScaleMap(const UniformScaleMap& other): ScaleMap(other) {} + ~UniformScaleMap() override = default; + + /// Return a MapBase::Ptr to a new UniformScaleMap + static MapBase::Ptr create() { return MapBase::Ptr(new UniformScaleMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new UniformScaleMap(*this)); } + + MapBase::Ptr inverseMap() const override + { + const Vec3d& invScale = getInvScale(); + return MapBase::Ptr(new UniformScaleMap( invScale[0])); + } + + static bool isRegistered() { return MapRegistry::isRegistered(UniformScaleMap::mapType()); } + static void registerMap() + { + MapRegistry::registerMap( + UniformScaleMap::mapType(), + UniformScaleMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("UniformScaleMap"); } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const UniformScaleMap& other) const { return ScaleMap::operator==(other); } + bool operator!=(const UniformScaleMap& other) const { return !(*this == other); } + + /// @brief Return a MapBase::Ptr to a UniformScaleTraslateMap that is the result of + /// pre-translation on this map + MapBase::Ptr preTranslate(const Vec3d&) const override; + + /// @brief Return a MapBase::Ptr to a UniformScaleTraslateMap that is the result of + /// post-translation on this map + MapBase::Ptr postTranslate(const Vec3d&) const override; + +}; // class UniformScaleMap + + +//////////////////////////////////////// + + +inline MapBase::Ptr +ScaleMap::preScale(const Vec3d& v) const +{ + const Vec3d new_scale(v * mScaleValues); + if (isApproxEqual(new_scale[0],new_scale[1]) && isApproxEqual(new_scale[0],new_scale[2])) { + return MapBase::Ptr(new UniformScaleMap(new_scale[0])); + } else { + return MapBase::Ptr(new ScaleMap(new_scale)); + } +} + + +inline MapBase::Ptr +ScaleMap::postScale(const Vec3d& v) const +{ // pre-post Scale are the same for a scale map + return preScale(v); +} + + +/// @brief A specialized linear transform that performs a translation +class OPENVDB_API TranslationMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + // default constructor is a translation by zero. + TranslationMap(): MapBase(), mTranslation(Vec3d(0,0,0)) {} + TranslationMap(const Vec3d& t): MapBase(), mTranslation(t) {} + TranslationMap(const TranslationMap& other): MapBase(), mTranslation(other.mTranslation) {} + + ~TranslationMap() override = default; + + /// Return a MapBase::Ptr to a new TranslationMap + static MapBase::Ptr create() { return MapBase::Ptr(new TranslationMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new TranslationMap(*this)); } + + MapBase::Ptr inverseMap() const override { + return MapBase::Ptr(new TranslationMap(-mTranslation)); + } + + static bool isRegistered() { return MapRegistry::isRegistered(TranslationMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + TranslationMap::mapType(), + TranslationMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("TranslationMap"); } + + /// Return @c true (a TranslationMap is always linear). + bool isLinear() const override { return true; } + + /// Return @c false (by convention true) + bool hasUniformScale() const override { return true; } + + /// Return the image of @c in under the map + Vec3d applyMap(const Vec3d& in) const override { return in + mTranslation; } + /// Return the pre-image of @c in under the map + Vec3d applyInverseMap(const Vec3d& in) const override { return in - mTranslation; } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in, const Vec3d&) const override { return applyJacobian(in); } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in) const override { return in; } + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d&) const override { + return applyInverseJacobian(in); + } + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { return in; } + + + /// @brief Return the Jacobian Transpose of the map applied to @a in. + /// @details This tranforms range-space gradients to domain-space gradients + Vec3d applyJT(const Vec3d& in, const Vec3d&) const override { return applyJT(in); } + /// Return the Jacobian Transpose of the map applied to @a in. + Vec3d applyJT(const Vec3d& in) const override { return in; } + + /// @brief Return the transpose of the inverse Jacobian (Identity for TranslationMap) + /// of the map applied to @c in, ignores second argument + Vec3d applyIJT(const Vec3d& in, const Vec3d& ) const override { return applyIJT(in);} + /// @brief Return the transpose of the inverse Jacobian (Identity for TranslationMap) + /// of the map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override {return in;} + /// Return the Jacobian Curvature: zero for a linear map + Mat3d applyIJC(const Mat3d& mat) const override {return mat;} + Mat3d applyIJC(const Mat3d& mat, const Vec3d&, const Vec3d&) const override { + return applyIJC(mat); + } + + /// Return @c 1 + double determinant(const Vec3d& ) const override { return determinant(); } + /// Return @c 1 + double determinant() const override { return 1.0; } + + /// Return (1,1,1). + Vec3d voxelSize() const override { return Vec3d(1,1,1);} + /// Return (1,1,1). + Vec3d voxelSize(const Vec3d&) const override { return voxelSize();} + + /// Return the translation vector + const Vec3d& getTranslation() const { return mTranslation; } + + /// read serialization + void read(std::istream& is) override { mTranslation.read(is); } + /// write serialization + void write(std::ostream& os) const override { mTranslation.write(os); } + /// string serialization, useful for debuging + std::string str() const override + { + std::ostringstream buffer; + buffer << " - translation: " << mTranslation << std::endl; + return buffer.str(); + } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const TranslationMap& other) const + { + // ::eq() uses a tolerance + return mTranslation.eq(other.mTranslation); + } + + bool operator!=(const TranslationMap& other) const { return !(*this == other); } + + /// Return AffineMap::Ptr to an AffineMap equivalent to *this + AffineMap::Ptr getAffineMap() const override + { + Mat4d matrix(Mat4d::identity()); + matrix.setTranslation(mTranslation); + + AffineMap::Ptr affineMap(new AffineMap(matrix)); + return affineMap; + } + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the appropriate operation. + MapBase::Ptr preRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreRotation(axis, radians); + return simplify(affineMap); + + } + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + return MapBase::Ptr(new TranslationMap(t + mTranslation)); + } + + MapBase::Ptr preScale(const Vec3d& v) const override; + + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of postfixing the appropriate operation. + MapBase::Ptr postRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostRotation(axis, radians); + return simplify(affineMap); + + } + MapBase::Ptr postTranslate(const Vec3d& t) const override + { // post and pre are the same for this + return MapBase::Ptr(new TranslationMap(t + mTranslation)); + } + + MapBase::Ptr postScale(const Vec3d& v) const override; + + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + +private: + Vec3d mTranslation; +}; // class TranslationMap + + +//////////////////////////////////////// + + +/// @brief A specialized Affine transform that scales along the principal axis +/// the scaling need not be uniform in the three-directions, and then +/// translates the result. +class OPENVDB_API ScaleTranslateMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + ScaleTranslateMap(): + MapBase(), + mTranslation(Vec3d(0,0,0)), + mScaleValues(Vec3d(1,1,1)), + mVoxelSize(Vec3d(1,1,1)), + mScaleValuesInverse(Vec3d(1,1,1)), + mInvScaleSqr(1,1,1), + mInvTwiceScale(0.5,0.5,0.5) + { + } + + ScaleTranslateMap(const Vec3d& scale, const Vec3d& translate): + MapBase(), + mTranslation(translate), + mScaleValues(scale), + mVoxelSize(std::abs(scale(0)), std::abs(scale(1)), std::abs(scale(2))) + { + const double determinant = scale[0]* scale[1] * scale[2]; + if (std::abs(determinant) < 3.0 * math::Tolerance::value()) { + OPENVDB_THROW(ArithmeticError, "Non-zero scale values required"); + } + mScaleValuesInverse = 1.0 / mScaleValues; + mInvScaleSqr = mScaleValuesInverse * mScaleValuesInverse; + mInvTwiceScale = mScaleValuesInverse / 2; + } + + ScaleTranslateMap(const ScaleMap& scale, const TranslationMap& translate): + MapBase(), + mTranslation(translate.getTranslation()), + mScaleValues(scale.getScale()), + mVoxelSize(std::abs(mScaleValues(0)), + std::abs(mScaleValues(1)), + std::abs(mScaleValues(2))), + mScaleValuesInverse(1.0 / scale.getScale()) + { + mInvScaleSqr = mScaleValuesInverse * mScaleValuesInverse; + mInvTwiceScale = mScaleValuesInverse / 2; + } + + ScaleTranslateMap(const ScaleTranslateMap& other): + MapBase(), + mTranslation(other.mTranslation), + mScaleValues(other.mScaleValues), + mVoxelSize(other.mVoxelSize), + mScaleValuesInverse(other.mScaleValuesInverse), + mInvScaleSqr(other.mInvScaleSqr), + mInvTwiceScale(other.mInvTwiceScale) + {} + + ~ScaleTranslateMap() override = default; + + /// Return a MapBase::Ptr to a new ScaleTranslateMap + static MapBase::Ptr create() { return MapBase::Ptr(new ScaleTranslateMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new ScaleTranslateMap(*this)); } + + MapBase::Ptr inverseMap() const override + { + return MapBase::Ptr(new ScaleTranslateMap( + mScaleValuesInverse, -mScaleValuesInverse * mTranslation)); + } + + static bool isRegistered() { return MapRegistry::isRegistered(ScaleTranslateMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + ScaleTranslateMap::mapType(), + ScaleTranslateMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("ScaleTranslateMap"); } + + /// Return @c true (a ScaleTranslateMap is always linear). + bool isLinear() const override { return true; } + + /// @brief Return @c true if the scale values have the same magnitude + /// (eg. -1, 1, -1 would be a rotation). + bool hasUniformScale() const override + { + bool value = isApproxEqual( + std::abs(mScaleValues.x()), std::abs(mScaleValues.y()), double(5e-7)); + value = value && isApproxEqual( + std::abs(mScaleValues.x()), std::abs(mScaleValues.z()), double(5e-7)); + return value; + } + + /// Return the image of @c under the map + Vec3d applyMap(const Vec3d& in) const override + { + return Vec3d( + in.x() * mScaleValues.x() + mTranslation.x(), + in.y() * mScaleValues.y() + mTranslation.y(), + in.z() * mScaleValues.z() + mTranslation.z()); + } + /// Return the pre-image of @c under the map + Vec3d applyInverseMap(const Vec3d& in) const override + { + return Vec3d( + (in.x() - mTranslation.x() ) * mScaleValuesInverse.x(), + (in.y() - mTranslation.y() ) * mScaleValuesInverse.y(), + (in.z() - mTranslation.z() ) * mScaleValuesInverse.z()); + } + + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in, const Vec3d&) const override { return applyJacobian(in); } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in) const override { return in * mScaleValues; } + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d&) const override { return applyInverseJacobian(in); } + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { return in * mScaleValuesInverse; } + + /// @brief Return the Jacobian Transpose of the map applied to @a in. + /// @details This tranforms range-space gradients to domain-space gradients + Vec3d applyJT(const Vec3d& in, const Vec3d&) const override { return applyJT(in); } + /// Return the Jacobian Transpose of the map applied to @a in. + Vec3d applyJT(const Vec3d& in) const override { return applyJacobian(in); } + + /// @brief Return the transpose of the inverse Jacobian of the map applied to @a in + /// @details Ignores second argument + Vec3d applyIJT(const Vec3d& in, const Vec3d&) const override { return applyIJT(in);} + /// Return the transpose of the inverse Jacobian of the map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override + { + return Vec3d( + in.x() * mScaleValuesInverse.x(), + in.y() * mScaleValuesInverse.y(), + in.z() * mScaleValuesInverse.z()); + } + /// Return the Jacobian Curvature: zero for a linear map + Mat3d applyIJC(const Mat3d& in) const override + { + Mat3d tmp; + for (int i=0; i<3; i++){ + tmp.setRow(i, in.row(i)*mScaleValuesInverse(i)); + } + for (int i=0; i<3; i++){ + tmp.setCol(i, tmp.col(i)*mScaleValuesInverse(i)); + } + return tmp; + } + Mat3d applyIJC(const Mat3d& in, const Vec3d&, const Vec3d& ) const override { + return applyIJC(in); + } + + /// Return the product of the scale values, ignores argument + double determinant(const Vec3d&) const override { return determinant(); } + /// Return the product of the scale values + double determinant() const override { + return mScaleValues.x() * mScaleValues.y() * mScaleValues.z(); + } + /// Return the absolute values of the scale values + Vec3d voxelSize() const override { return mVoxelSize;} + /// Return the absolute values of the scale values, ignores argument + Vec3d voxelSize(const Vec3d&) const override { return voxelSize();} + + /// Returns the scale values + const Vec3d& getScale() const { return mScaleValues; } + /// Returns the translation + const Vec3d& getTranslation() const { return mTranslation; } + + /// Return the square of the scale. Used to optimize some finite difference calculations + const Vec3d& getInvScaleSqr() const {return mInvScaleSqr;} + /// Return 1/(2 scale). Used to optimize some finite difference calculations + const Vec3d& getInvTwiceScale() const {return mInvTwiceScale;} + /// Return 1/(scale) + const Vec3d& getInvScale() const {return mScaleValuesInverse; } + + /// read serialization + void read(std::istream& is) override + { + mTranslation.read(is); + mScaleValues.read(is); + mVoxelSize.read(is); + mScaleValuesInverse.read(is); + mInvScaleSqr.read(is); + mInvTwiceScale.read(is); + } + /// write serialization + void write(std::ostream& os) const override + { + mTranslation.write(os); + mScaleValues.write(os); + mVoxelSize.write(os); + mScaleValuesInverse.write(os); + mInvScaleSqr.write(os); + mInvTwiceScale.write(os); + } + /// string serialization, useful for debuging + std::string str() const override + { + std::ostringstream buffer; + buffer << " - translation: " << mTranslation << std::endl; + buffer << " - scale: " << mScaleValues << std::endl; + buffer << " - voxel dimensions: " << mVoxelSize << std::endl; + return buffer.str(); + } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const ScaleTranslateMap& other) const + { + // ::eq() uses a tolerance + if (!mScaleValues.eq(other.mScaleValues)) { return false; } + if (!mTranslation.eq(other.mTranslation)) { return false; } + return true; + } + + bool operator!=(const ScaleTranslateMap& other) const { return !(*this == other); } + + /// Return AffineMap::Ptr to an AffineMap equivalent to *this + AffineMap::Ptr getAffineMap() const override + { + AffineMap::Ptr affineMap(new AffineMap(math::scale(mScaleValues))); + affineMap->accumPostTranslation(mTranslation); + return affineMap; + } + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the appropraite operation. + MapBase::Ptr preRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreRotation(axis, radians); + return simplify(affineMap); + } + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + const Vec3d& s = mScaleValues; + const Vec3d scaled_trans( t.x() * s.x(), + t.y() * s.y(), + t.z() * s.z() ); + return MapBase::Ptr( new ScaleTranslateMap(mScaleValues, mTranslation + scaled_trans)); + } + + MapBase::Ptr preScale(const Vec3d& v) const override; + + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + + //@{ + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of postfixing the appropraite operation. + MapBase::Ptr postRotate(double radians, Axis axis) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostRotation(axis, radians); + return simplify(affineMap); + } + MapBase::Ptr postTranslate(const Vec3d& t) const override + { + return MapBase::Ptr( new ScaleTranslateMap(mScaleValues, mTranslation + t)); + } + + MapBase::Ptr postScale(const Vec3d& v) const override; + + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostShear(axis0, axis1, shear); + return simplify(affineMap); + } + //@} + +private: + Vec3d mTranslation, mScaleValues, mVoxelSize, mScaleValuesInverse, + mInvScaleSqr, mInvTwiceScale; +}; // class ScaleTanslateMap + + +inline MapBase::Ptr +ScaleMap::postTranslate(const Vec3d& t) const +{ + return MapBase::Ptr(new ScaleTranslateMap(mScaleValues, t)); +} + + +inline MapBase::Ptr +ScaleMap::preTranslate(const Vec3d& t) const +{ + + const Vec3d& s = mScaleValues; + const Vec3d scaled_trans( t.x() * s.x(), + t.y() * s.y(), + t.z() * s.z() ); + return MapBase::Ptr(new ScaleTranslateMap(mScaleValues, scaled_trans)); +} + + +/// @brief A specialized Affine transform that uniformaly scales along the principal axis +/// and then translates the result. +class OPENVDB_API UniformScaleTranslateMap: public ScaleTranslateMap +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + UniformScaleTranslateMap():ScaleTranslateMap(Vec3d(1,1,1), Vec3d(0,0,0)) {} + UniformScaleTranslateMap(double scale, const Vec3d& translate): + ScaleTranslateMap(Vec3d(scale,scale,scale), translate) {} + UniformScaleTranslateMap(const UniformScaleMap& scale, const TranslationMap& translate): + ScaleTranslateMap(scale.getScale(), translate.getTranslation()) {} + + UniformScaleTranslateMap(const UniformScaleTranslateMap& other):ScaleTranslateMap(other) {} + ~UniformScaleTranslateMap() override = default; + + /// Return a MapBase::Ptr to a new UniformScaleTranslateMap + static MapBase::Ptr create() { return MapBase::Ptr(new UniformScaleTranslateMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new UniformScaleTranslateMap(*this)); } + + MapBase::Ptr inverseMap() const override + { + const Vec3d& scaleInv = getInvScale(); + const Vec3d& trans = getTranslation(); + return MapBase::Ptr(new UniformScaleTranslateMap(scaleInv[0], -scaleInv[0] * trans)); + } + + static bool isRegistered() + { + return MapRegistry::isRegistered(UniformScaleTranslateMap::mapType()); + } + + static void registerMap() + { + MapRegistry::registerMap( + UniformScaleTranslateMap::mapType(), UniformScaleTranslateMap::create); + } + + Name type() const override { return mapType(); } + static Name mapType() { return Name("UniformScaleTranslateMap"); } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const UniformScaleTranslateMap& other) const + { + return ScaleTranslateMap::operator==(other); + } + bool operator!=(const UniformScaleTranslateMap& other) const { return !(*this == other); } + + /// @brief Return a MapBase::Ptr to a UniformScaleTranslateMap that is + /// the result of prepending translation on this map. + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + const double scale = this->getScale().x(); + const Vec3d new_trans = this->getTranslation() + scale * t; + return MapBase::Ptr( new UniformScaleTranslateMap(scale, new_trans)); + } + + /// @brief Return a MapBase::Ptr to a UniformScaleTranslateMap that is + /// the result of postfixing translation on this map. + MapBase::Ptr postTranslate(const Vec3d& t) const override + { + const double scale = this->getScale().x(); + return MapBase::Ptr( new UniformScaleTranslateMap(scale, this->getTranslation() + t)); + } +}; // class UniformScaleTanslateMap + + +inline MapBase::Ptr +UniformScaleMap::postTranslate(const Vec3d& t) const +{ + const double scale = this->getScale().x(); + return MapBase::Ptr(new UniformScaleTranslateMap(scale, t)); +} + + +inline MapBase::Ptr +UniformScaleMap::preTranslate(const Vec3d& t) const +{ + const double scale = this->getScale().x(); + return MapBase::Ptr(new UniformScaleTranslateMap(scale, scale*t)); +} + + +inline MapBase::Ptr +TranslationMap::preScale(const Vec3d& v) const +{ + if (isApproxEqual(v[0],v[1]) && isApproxEqual(v[0],v[2])) { + return MapBase::Ptr(new UniformScaleTranslateMap(v[0], mTranslation)); + } else { + return MapBase::Ptr(new ScaleTranslateMap(v, mTranslation)); + } +} + + +inline MapBase::Ptr +TranslationMap::postScale(const Vec3d& v) const +{ + if (isApproxEqual(v[0],v[1]) && isApproxEqual(v[0],v[2])) { + return MapBase::Ptr(new UniformScaleTranslateMap(v[0], v[0]*mTranslation)); + } else { + const Vec3d trans(mTranslation.x()*v.x(), + mTranslation.y()*v.y(), + mTranslation.z()*v.z()); + return MapBase::Ptr(new ScaleTranslateMap(v, trans)); + } +} + + +inline MapBase::Ptr +ScaleTranslateMap::preScale(const Vec3d& v) const +{ + const Vec3d new_scale( v * mScaleValues ); + if (isApproxEqual(new_scale[0],new_scale[1]) && isApproxEqual(new_scale[0],new_scale[2])) { + return MapBase::Ptr( new UniformScaleTranslateMap(new_scale[0], mTranslation)); + } else { + return MapBase::Ptr( new ScaleTranslateMap(new_scale, mTranslation)); + } +} + + +inline MapBase::Ptr +ScaleTranslateMap::postScale(const Vec3d& v) const +{ + const Vec3d new_scale( v * mScaleValues ); + const Vec3d new_trans( mTranslation.x()*v.x(), + mTranslation.y()*v.y(), + mTranslation.z()*v.z() ); + + if (isApproxEqual(new_scale[0],new_scale[1]) && isApproxEqual(new_scale[0],new_scale[2])) { + return MapBase::Ptr( new UniformScaleTranslateMap(new_scale[0], new_trans)); + } else { + return MapBase::Ptr( new ScaleTranslateMap(new_scale, new_trans)); + } +} + + +//////////////////////////////////////// + + +/// @brief A specialized linear transform that performs a unitary maping +/// i.e. rotation and or reflection. +class OPENVDB_API UnitaryMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + /// default constructor makes an Idenity. + UnitaryMap(): mAffineMap(Mat4d::identity()) + { + } + + UnitaryMap(const Vec3d& axis, double radians) + { + Mat3d matrix; + matrix.setToRotation(axis, radians); + mAffineMap = AffineMap(matrix); + } + + UnitaryMap(Axis axis, double radians) + { + Mat4d matrix; + matrix.setToRotation(axis, radians); + mAffineMap = AffineMap(matrix); + } + + UnitaryMap(const Mat3d& m) + { + // test that the mat3 is a rotation || reflection + if (!isUnitary(m)) { + OPENVDB_THROW(ArithmeticError, "Matrix initializing unitary map was not unitary"); + } + + Mat4d matrix(Mat4d::identity()); + matrix.setMat3(m); + mAffineMap = AffineMap(matrix); + } + + UnitaryMap(const Mat4d& m) + { + if (!isInvertible(m)) { + OPENVDB_THROW(ArithmeticError, + "4x4 Matrix initializing unitary map was not unitary: not invertible"); + } + + if (!isAffine(m)) { + OPENVDB_THROW(ArithmeticError, + "4x4 Matrix initializing unitary map was not unitary: not affine"); + } + + if (hasTranslation(m)) { + OPENVDB_THROW(ArithmeticError, + "4x4 Matrix initializing unitary map was not unitary: had translation"); + } + + if (!isUnitary(m.getMat3())) { + OPENVDB_THROW(ArithmeticError, + "4x4 Matrix initializing unitary map was not unitary"); + } + + mAffineMap = AffineMap(m); + } + + UnitaryMap(const UnitaryMap& other): + MapBase(other), + mAffineMap(other.mAffineMap) + { + } + + UnitaryMap(const UnitaryMap& first, const UnitaryMap& second): + mAffineMap(*(first.getAffineMap()), *(second.getAffineMap())) + { + } + + ~UnitaryMap() override = default; + + /// Return a MapBase::Ptr to a new UnitaryMap + static MapBase::Ptr create() { return MapBase::Ptr(new UnitaryMap()); } + /// Returns a MapBase::Ptr to a deep copy of *this + MapBase::Ptr copy() const override { return MapBase::Ptr(new UnitaryMap(*this)); } + + MapBase::Ptr inverseMap() const override + { + return MapBase::Ptr(new UnitaryMap(mAffineMap.getMat4().inverse())); + } + + static bool isRegistered() { return MapRegistry::isRegistered(UnitaryMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + UnitaryMap::mapType(), + UnitaryMap::create); + } + + /// Return @c UnitaryMap + Name type() const override { return mapType(); } + /// Return @c UnitaryMap + static Name mapType() { return Name("UnitaryMap"); } + + /// Return @c true (a UnitaryMap is always linear). + bool isLinear() const override { return true; } + + /// Return @c false (by convention true) + bool hasUniformScale() const override { return true; } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const UnitaryMap& other) const + { + // compare underlying linear map. + if (mAffineMap!=other.mAffineMap) return false; + return true; + } + + bool operator!=(const UnitaryMap& other) const { return !(*this == other); } + /// Return the image of @c in under the map + Vec3d applyMap(const Vec3d& in) const override { return mAffineMap.applyMap(in); } + /// Return the pre-image of @c in under the map + Vec3d applyInverseMap(const Vec3d& in) const override { return mAffineMap.applyInverseMap(in); } + + Vec3d applyJacobian(const Vec3d& in, const Vec3d&) const override { return applyJacobian(in); } + /// Return the Jacobian of the map applied to @a in. + Vec3d applyJacobian(const Vec3d& in) const override { return mAffineMap.applyJacobian(in); } + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d&) const override { + return applyInverseJacobian(in); + } + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { + return mAffineMap.applyInverseJacobian(in); + } + + /// @brief Return the Jacobian Transpose of the map applied to @a in. + /// @details This tranforms range-space gradients to domain-space gradients + Vec3d applyJT(const Vec3d& in, const Vec3d&) const override { return applyJT(in); } + /// Return the Jacobian Transpose of the map applied to @a in. + Vec3d applyJT(const Vec3d& in) const override { + return applyInverseMap(in); // the transpose of the unitary map is its inverse + } + + + /// @brief Return the transpose of the inverse Jacobian of the map applied to @a in + /// @details Ignores second argument + Vec3d applyIJT(const Vec3d& in, const Vec3d& ) const override { return applyIJT(in);} + /// Return the transpose of the inverse Jacobian of the map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override { return mAffineMap.applyIJT(in); } + /// Return the Jacobian Curvature: zero for a linear map + Mat3d applyIJC(const Mat3d& in) const override { return mAffineMap.applyIJC(in); } + Mat3d applyIJC(const Mat3d& in, const Vec3d&, const Vec3d& ) const override { + return applyIJC(in); + } + + /// Return the determinant of the Jacobian, ignores argument + double determinant(const Vec3d&) const override { return determinant(); } + /// Return the determinant of the Jacobian + double determinant() const override { return mAffineMap.determinant(); } + + + /// @{ + /// @brief Returns the lengths of the images of the segments + /// (0,0,0) − (1,0,0), (0,0,0) − (0,1,0) and (0,0,0) − (0,0,1). + Vec3d voxelSize() const override { return mAffineMap.voxelSize();} + Vec3d voxelSize(const Vec3d&) const override { return voxelSize();} + /// @} + + /// read serialization + void read(std::istream& is) override + { + mAffineMap.read(is); + } + + /// write serialization + void write(std::ostream& os) const override + { + mAffineMap.write(os); + } + /// string serialization, useful for debuging + std::string str() const override + { + std::ostringstream buffer; + buffer << mAffineMap.str(); + return buffer.str(); + } + /// Return AffineMap::Ptr to an AffineMap equivalent to *this + AffineMap::Ptr getAffineMap() const override { + return AffineMap::Ptr(new AffineMap(mAffineMap)); + } + + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given rotation. + MapBase::Ptr preRotate(double radians, Axis axis) const override + { + UnitaryMap first(axis, radians); + UnitaryMap::Ptr unitaryMap(new UnitaryMap(first, *this)); + return StaticPtrCast(unitaryMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given translation. + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreTranslation(t); + return simplify(affineMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given scale. + MapBase::Ptr preScale(const Vec3d& v) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreScale(v); + return simplify(affineMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given shear. + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPreShear(axis0, axis1, shear); + return simplify(affineMap); + } + + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given rotation. + MapBase::Ptr postRotate(double radians, Axis axis) const override + { + UnitaryMap second(axis, radians); + UnitaryMap::Ptr unitaryMap(new UnitaryMap(*this, second)); + return StaticPtrCast(unitaryMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given translation. + MapBase::Ptr postTranslate(const Vec3d& t) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostTranslation(t); + return simplify(affineMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given scale. + MapBase::Ptr postScale(const Vec3d& v) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostScale(v); + return simplify(affineMap); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given shear. + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + AffineMap::Ptr affineMap = getAffineMap(); + affineMap->accumPostShear(axis0, axis1, shear); + return simplify(affineMap); + } + +private: + AffineMap mAffineMap; +}; // class UnitaryMap + + +//////////////////////////////////////// + + +/// @brief This map is composed of three steps. +/// First it will take a box of size (Lx X Ly X Lz) defined by a member data bounding box +/// and map it into a frustum with near plane (1 X Ly/Lx) and prescribed depth +/// Then this frustum is transformed by an internal second map: most often a uniform scale, +/// but other effects can be achieved by accumulating translation, shear and rotation: these +/// are all applied to the second map +class OPENVDB_API NonlinearFrustumMap: public MapBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + NonlinearFrustumMap(): + MapBase(), + mBBox(Vec3d(0), Vec3d(1)), + mTaper(1), + mDepth(1) + { + init(); + } + + /// @brief Constructor that takes an index-space bounding box + /// to be mapped into a frustum with a given @a depth and @a taper + /// (defined as ratio of nearplane/farplane). + NonlinearFrustumMap(const BBoxd& bb, double taper, double depth): + MapBase(),mBBox(bb), mTaper(taper), mDepth(depth) + { + init(); + } + + /// @brief Constructor that takes an index-space bounding box + /// to be mapped into a frustum with a given @a depth and @a taper + /// (defined as ratio of nearplane/farplane). + /// @details This frustum is further modifed by the @a secondMap, + /// intended to be a simple translation and rotation and uniform scale + NonlinearFrustumMap(const BBoxd& bb, double taper, double depth, + const MapBase::Ptr& secondMap): + mBBox(bb), mTaper(taper), mDepth(depth) + { + if (!secondMap->isLinear() ) { + OPENVDB_THROW(ArithmeticError, + "The second map in the Frustum transfrom must be linear"); + } + mSecondMap = *( secondMap->getAffineMap() ); + init(); + } + + NonlinearFrustumMap(const NonlinearFrustumMap& other): + MapBase(), + mBBox(other.mBBox), + mTaper(other.mTaper), + mDepth(other.mDepth), + mSecondMap(other.mSecondMap), + mHasSimpleAffine(other.mHasSimpleAffine) + { + init(); + } + + /// @brief Constructor from a camera frustum + /// + /// @param position the tip of the frustum (i.e., the camera's position). + /// @param direction a vector pointing from @a position toward the near plane. + /// @param up a non-unit vector describing the direction and extent of + /// the frustum's intersection on the near plane. Together, + /// @a up must be orthogonal to @a direction. + /// @param aspect the aspect ratio of the frustum intersection with near plane + /// defined as width / height + /// @param z_near,depth the distance from @a position along @a direction to the + /// near and far planes of the frustum. + /// @param x_count the number of voxels, aligned with @a left, + /// across the face of the frustum + /// @param z_count the number of voxels, aligned with @a direction, + /// between the near and far planes + NonlinearFrustumMap(const Vec3d& position, + const Vec3d& direction, + const Vec3d& up, + double aspect /* width / height */, + double z_near, double depth, + Coord::ValueType x_count, Coord::ValueType z_count) { + + /// @todo check that depth > 0 + /// @todo check up.length > 0 + /// @todo check that direction dot up = 0 + if (!(depth > 0)) { + OPENVDB_THROW(ArithmeticError, + "The frustum depth must be non-zero and positive"); + } + if (!(up.length() > 0)) { + OPENVDB_THROW(ArithmeticError, + "The frustum height must be non-zero and positive"); + } + if (!(aspect > 0)) { + OPENVDB_THROW(ArithmeticError, + "The frustum aspect ratio must be non-zero and positive"); + } + if (!(isApproxEqual(up.dot(direction), 0.))) { + OPENVDB_THROW(ArithmeticError, + "The frustum up orientation must be perpendicular to into-frustum direction"); + } + + double near_plane_height = 2 * up.length(); + double near_plane_width = aspect * near_plane_height; + + Coord::ValueType y_count = static_cast(Round(x_count / aspect)); + + mBBox = BBoxd(Vec3d(0,0,0), Vec3d(x_count, y_count, z_count)); + mDepth = depth / near_plane_width; // depth non-dimensionalized on width + double gamma = near_plane_width / z_near; + mTaper = 1./(mDepth*gamma + 1.); + + Vec3d direction_unit = direction; + direction_unit.normalize(); + + Mat4d r1(Mat4d::identity()); + r1.setToRotation(/*from*/Vec3d(0,0,1), /*to */direction_unit); + Mat4d r2(Mat4d::identity()); + Vec3d temp = r1.inverse().transform(up); + r2.setToRotation(/*from*/Vec3d(0,1,0), /*to*/temp ); + Mat4d scale = math::scale( + Vec3d(near_plane_width, near_plane_width, near_plane_width)); + + // move the near plane to origin, rotate to align with axis, and scale down + // T_inv * R1_inv * R2_inv * scale_inv + Mat4d mat = scale * r2 * r1; + mat.setTranslation(position + z_near*direction_unit); + + mSecondMap = AffineMap(mat); + + init(); + } + + ~NonlinearFrustumMap() override = default; + + /// Return a MapBase::Ptr to a new NonlinearFrustumMap + static MapBase::Ptr create() { return MapBase::Ptr(new NonlinearFrustumMap()); } + /// Return a MapBase::Ptr to a deep copy of this map + MapBase::Ptr copy() const override { return MapBase::Ptr(new NonlinearFrustumMap(*this)); } + + /// @brief Not implemented, since there is currently no map type that can + /// represent the inverse of a frustum + /// @throw NotImplementedError + MapBase::Ptr inverseMap() const override + { + OPENVDB_THROW(NotImplementedError, + "inverseMap() is not implemented for NonlinearFrustumMap"); + } + static bool isRegistered() { return MapRegistry::isRegistered(NonlinearFrustumMap::mapType()); } + + static void registerMap() + { + MapRegistry::registerMap( + NonlinearFrustumMap::mapType(), + NonlinearFrustumMap::create); + } + /// Return @c NonlinearFrustumMap + Name type() const override { return mapType(); } + /// Return @c NonlinearFrustumMap + static Name mapType() { return Name("NonlinearFrustumMap"); } + + /// Return @c false (a NonlinearFrustumMap is never linear). + bool isLinear() const override { return false; } + + /// Return @c false (by convention false) + bool hasUniformScale() const override { return false; } + + /// Return @c true if the map is equivalent to an identity + bool isIdentity() const + { + // The frustum can only be consistent with a linear map if the taper value is 1 + if (!isApproxEqual(mTaper, double(1)) ) return false; + + // There are various ways an identity can decomposed between the two parts of the + // map. Best to just check that the principle vectors are stationary. + const Vec3d e1(1,0,0); + if (!applyMap(e1).eq(e1)) return false; + + const Vec3d e2(0,1,0); + if (!applyMap(e2).eq(e2)) return false; + + const Vec3d e3(0,0,1); + if (!applyMap(e3).eq(e3)) return false; + + return true; + } + + bool isEqual(const MapBase& other) const override { return isEqualBase(*this, other); } + + bool operator==(const NonlinearFrustumMap& other) const + { + if (mBBox!=other.mBBox) return false; + if (!isApproxEqual(mTaper, other.mTaper)) return false; + if (!isApproxEqual(mDepth, other.mDepth)) return false; + + // Two linear transforms are equivalent iff they have the same translation + // and have the same affects on orthongal spanning basis check translation + Vec3d e(0,0,0); + if (!mSecondMap.applyMap(e).eq(other.mSecondMap.applyMap(e))) return false; + /// check spanning vectors + e(0) = 1; + if (!mSecondMap.applyMap(e).eq(other.mSecondMap.applyMap(e))) return false; + e(0) = 0; + e(1) = 1; + if (!mSecondMap.applyMap(e).eq(other.mSecondMap.applyMap(e))) return false; + e(1) = 0; + e(2) = 1; + if (!mSecondMap.applyMap(e).eq(other.mSecondMap.applyMap(e))) return false; + return true; + } + + bool operator!=(const NonlinearFrustumMap& other) const { return !(*this == other); } + + /// Return the image of @c in under the map + Vec3d applyMap(const Vec3d& in) const override + { + return mSecondMap.applyMap(applyFrustumMap(in)); + } + + /// Return the pre-image of @c in under the map + Vec3d applyInverseMap(const Vec3d& in) const override + { + return applyFrustumInverseMap(mSecondMap.applyInverseMap(in)); + } + /// Return the Jacobian of the linear second map applied to @c in + Vec3d applyJacobian(const Vec3d& in) const override { return mSecondMap.applyJacobian(in); } + /// Return the Jacobian defined at @c isloc applied to @c in + Vec3d applyJacobian(const Vec3d& in, const Vec3d& isloc) const override + { + // Move the center of the x-face of the bbox + // to the origin in index space. + Vec3d centered(isloc); + centered = centered - mBBox.min(); + centered.x() -= mXo; + centered.y() -= mYo; + + // scale the z-direction on depth / K count + const double zprime = centered.z()*mDepthOnLz; + + const double scale = (mGamma * zprime + 1.) / mLx; + const double scale2 = mGamma * mDepthOnLz / mLx; + + const Vec3d tmp(scale * in.x() + scale2 * centered.x()* in.z(), + scale * in.y() + scale2 * centered.y()* in.z(), + mDepthOnLz * in.z()); + + return mSecondMap.applyJacobian(tmp); + } + + + /// @brief Return the Inverse Jacobian of the map applied to @a in + /// (i.e. inverse map with out translation) + Vec3d applyInverseJacobian(const Vec3d& in) const override { + return mSecondMap.applyInverseJacobian(in); + } + /// Return the Inverse Jacobian defined at @c isloc of the map applied to @a in. + Vec3d applyInverseJacobian(const Vec3d& in, const Vec3d& isloc) const override { + + // Move the center of the x-face of the bbox + // to the origin in index space. + Vec3d centered(isloc); + centered = centered - mBBox.min(); + centered.x() -= mXo; + centered.y() -= mYo; + + // scale the z-direction on depth / K count + const double zprime = centered.z()*mDepthOnLz; + + const double scale = (mGamma * zprime + 1.) / mLx; + const double scale2 = mGamma * mDepthOnLz / mLx; + + + Vec3d out = mSecondMap.applyInverseJacobian(in); + + out.x() = (out.x() - scale2 * centered.x() * out.z() / mDepthOnLz) / scale; + out.y() = (out.y() - scale2 * centered.y() * out.z() / mDepthOnLz) / scale; + out.z() = out.z() / mDepthOnLz; + + return out; + } + + /// @brief Return the Jacobian Transpose of the map applied to vector @c in at @c indexloc. + /// @details This tranforms range-space gradients to domain-space gradients. + Vec3d applyJT(const Vec3d& in, const Vec3d& isloc) const override { + const Vec3d tmp = mSecondMap.applyJT(in); + // Move the center of the x-face of the bbox + // to the origin in index space. + Vec3d centered(isloc); + centered = centered - mBBox.min(); + centered.x() -= mXo; + centered.y() -= mYo; + + // scale the z-direction on depth / K count + const double zprime = centered.z()*mDepthOnLz; + + const double scale = (mGamma * zprime + 1.) / mLx; + const double scale2 = mGamma * mDepthOnLz / mLx; + + return Vec3d(scale * tmp.x(), + scale * tmp.y(), + scale2 * centered.x()* tmp.x() + + scale2 * centered.y()* tmp.y() + + mDepthOnLz * tmp.z()); + } + /// Return the Jacobian Transpose of the second map applied to @c in. + Vec3d applyJT(const Vec3d& in) const override { + return mSecondMap.applyJT(in); + } + + /// Return the transpose of the inverse Jacobian of the linear second map applied to @c in + Vec3d applyIJT(const Vec3d& in) const override { return mSecondMap.applyIJT(in); } + + // the Jacobian of the nonlinear part of the transform is a sparse matrix + // Jacobian^(-T) = + // + // (Lx)( 1/s 0 0 ) + // ( 0 1/s 0 ) + // ( -(x-xo)g/(sLx) -(y-yo)g/(sLx) Lz/(Depth Lx) ) + /// Return the transpose of the inverse Jacobain (at @c locW applied to @c in. + /// @c ijk is the location in the pre-image space (e.g. index space) + Vec3d applyIJT(const Vec3d& d1_is, const Vec3d& ijk) const override + { + const Vec3d loc = applyFrustumMap(ijk); + const double s = mGamma * loc.z() + 1.; + + // verify that we aren't at the singularity + if (isApproxEqual(s, 0.)) { + OPENVDB_THROW(ArithmeticError, "Tried to evaluate the frustum transform" + " at the singular focal point (e.g. camera)"); + } + + const double sinv = 1.0/s; // 1/(z*gamma + 1) + const double pt0 = mLx * sinv; // Lx / (z*gamma +1) + const double pt1 = mGamma * pt0; // gamma * Lx / ( z*gamma +1) + const double pt2 = pt1 * sinv; // gamma * Lx / ( z*gamma +1)**2 + + const Mat3d& jacinv = mSecondMap.getConstJacobianInv(); + + // compute \frac{\partial E_i}{\partial x_j} + Mat3d gradE(Mat3d::zero()); + for (int j = 0; j < 3; ++j ) { + gradE(0,j) = pt0 * jacinv(0,j) - pt2 * loc.x()*jacinv(2,j); + gradE(1,j) = pt0 * jacinv(1,j) - pt2 * loc.y()*jacinv(2,j); + gradE(2,j) = (1./mDepthOnLz) * jacinv(2,j); + } + + Vec3d result; + for (int i = 0; i < 3; ++i) { + result(i) = d1_is(0) * gradE(0,i) + d1_is(1) * gradE(1,i) + d1_is(2) * gradE(2,i); + } + + return result; + + } + + /// Return the Jacobian Curvature for the linear second map + Mat3d applyIJC(const Mat3d& in) const override { return mSecondMap.applyIJC(in); } + /// Return the Jacobian Curvature: all the second derivatives in range space + /// @param d2_is second derivative matrix computed in index space + /// @param d1_is gradient computed in index space + /// @param ijk the index space location where the result is computed + Mat3d applyIJC(const Mat3d& d2_is, const Vec3d& d1_is, const Vec3d& ijk) const override + { + const Vec3d loc = applyFrustumMap(ijk); + + const double s = mGamma * loc.z() + 1.; + + // verify that we aren't at the singularity + if (isApproxEqual(s, 0.)) { + OPENVDB_THROW(ArithmeticError, "Tried to evaluate the frustum transform" + " at the singular focal point (e.g. camera)"); + } + + // precompute + const double sinv = 1.0/s; // 1/(z*gamma + 1) + const double pt0 = mLx * sinv; // Lx / (z*gamma +1) + const double pt1 = mGamma * pt0; // gamma * Lx / ( z*gamma +1) + const double pt2 = pt1 * sinv; // gamma * Lx / ( z*gamma +1)**2 + const double pt3 = pt2 * sinv; // gamma * Lx / ( z*gamma +1)**3 + + const Mat3d& jacinv = mSecondMap.getConstJacobianInv(); + + // compute \frac{\partial^2 E_i}{\partial x_j \partial x_k} + + Mat3d matE0(Mat3d::zero()); + Mat3d matE1(Mat3d::zero()); // matE2 = 0 + for(int j = 0; j < 3; j++) { + for (int k = 0; k < 3; k++) { + + const double pt4 = 2. * jacinv(2,j) * jacinv(2,k) * pt3; + + matE0(j,k) = -(jacinv(0,j) * jacinv(2,k) + jacinv(2,j) * jacinv(0,k)) * pt2 + + pt4 * loc.x(); + + matE1(j,k) = -(jacinv(1,j) * jacinv(2,k) + jacinv(2,j) * jacinv(1,k)) * pt2 + + pt4 * loc.y(); + } + } + + // compute \frac{\partial E_i}{\partial x_j} + Mat3d gradE(Mat3d::zero()); + for (int j = 0; j < 3; ++j ) { + gradE(0,j) = pt0 * jacinv(0,j) - pt2 * loc.x()*jacinv(2,j); + gradE(1,j) = pt0 * jacinv(1,j) - pt2 * loc.y()*jacinv(2,j); + gradE(2,j) = (1./mDepthOnLz) * jacinv(2,j); + } + + Mat3d result(Mat3d::zero()); + // compute \fac{\partial E_j}{\partial x_m} \fac{\partial E_i}{\partial x_n} + // \frac{\partial^2 input}{\partial E_i \partial E_j} + for (int m = 0; m < 3; ++m ) { + for ( int n = 0; n < 3; ++n) { + for (int i = 0; i < 3; ++i ) { + for (int j = 0; j < 3; ++j) { + result(m, n) += gradE(j, m) * gradE(i, n) * d2_is(i, j); + } + } + } + } + + for (int m = 0; m < 3; ++m ) { + for ( int n = 0; n < 3; ++n) { + result(m, n) += + matE0(m, n) * d1_is(0) + matE1(m, n) * d1_is(1);// + matE2(m, n) * d1_is(2); + } + } + + return result; + } + + /// Return the determinant of the Jacobian of linear second map + double determinant() const override {return mSecondMap.determinant();} // no implementation + + /// Return the determinate of the Jacobian evaluated at @c loc + /// @c loc is a location in the pre-image space (e.g., index space) + double determinant(const Vec3d& loc) const override + { + double s = mGamma * loc.z() + 1.0; + double frustum_determinant = s * s * mDepthOnLzLxLx; + return mSecondMap.determinant() * frustum_determinant; + } + + /// Return the size of a voxel at the center of the near plane + Vec3d voxelSize() const override + { + const Vec3d loc( 0.5*(mBBox.min().x() + mBBox.max().x()), + 0.5*(mBBox.min().y() + mBBox.max().y()), + mBBox.min().z()); + + return voxelSize(loc); + + } + + /// @brief Returns the lengths of the images of the three segments + /// from @a loc to @a loc + (1,0,0), from @a loc to @a loc + (0,1,0) + /// and from @a loc to @a loc + (0,0,1) + /// @param loc a location in the pre-image space (e.g., index space) + Vec3d voxelSize(const Vec3d& loc) const override + { + Vec3d out, pos = applyMap(loc); + out(0) = (applyMap(loc + Vec3d(1,0,0)) - pos).length(); + out(1) = (applyMap(loc + Vec3d(0,1,0)) - pos).length(); + out(2) = (applyMap(loc + Vec3d(0,0,1)) - pos).length(); + return out; + } + + AffineMap::Ptr getAffineMap() const override { return mSecondMap.getAffineMap(); } + + /// set the taper value, the ratio of nearplane width / far plane width + void setTaper(double t) { mTaper = t; init();} + /// Return the taper value. + double getTaper() const { return mTaper; } + /// set the frustum depth: distance between near and far plane = frustm depth * frustm x-width + void setDepth(double d) { mDepth = d; init();} + /// Return the unscaled frustm depth + double getDepth() const { return mDepth; } + // gamma a non-dimensional number: nearplane x-width / camera to near plane distance + double getGamma() const { return mGamma; } + + /// Return the bounding box that defines the frustum in pre-image space + const BBoxd& getBBox() const { return mBBox; } + + /// Return MapBase::Ptr& to the second map + const AffineMap& secondMap() const { return mSecondMap; } + /// Return @c true if the the bounding box in index space that defines the region that + /// is maped into the frustum is non-zero, otherwise @c false + bool isValid() const { return !mBBox.empty();} + + /// Return @c true if the second map is a uniform scale, Rotation and translation + bool hasSimpleAffine() const { return mHasSimpleAffine; } + + /// read serialization + void read(std::istream& is) override + { + // for backward compatibility with earlier version + if (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_FLOAT_FRUSTUM_BBOX ) { + CoordBBox bb; + bb.read(is); + mBBox = BBoxd(bb.min().asVec3d(), bb.max().asVec3d()); + } else { + mBBox.read(is); + } + + is.read(reinterpret_cast(&mTaper), sizeof(double)); + is.read(reinterpret_cast(&mDepth), sizeof(double)); + + // Read the second maps type. + Name type = readString(is); + + // Check if the map has been registered. + if(!MapRegistry::isRegistered(type)) { + OPENVDB_THROW(KeyError, "Map " << type << " is not registered"); + } + + // Create the second map of the type and then read it in. + MapBase::Ptr proxy = math::MapRegistry::createMap(type); + proxy->read(is); + mSecondMap = *(proxy->getAffineMap()); + init(); + } + + /// write serialization + void write(std::ostream& os) const override + { + mBBox.write(os); + os.write(reinterpret_cast(&mTaper), sizeof(double)); + os.write(reinterpret_cast(&mDepth), sizeof(double)); + + writeString(os, mSecondMap.type()); + mSecondMap.write(os); + } + + /// string serialization, useful for debuging + std::string str() const override + { + std::ostringstream buffer; + buffer << " - taper: " << mTaper << std::endl; + buffer << " - depth: " << mDepth << std::endl; + buffer << " SecondMap: "<< mSecondMap.type() << std::endl; + buffer << mSecondMap.str() << std::endl; + return buffer.str(); + } + + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given rotation to the linear part of this map + MapBase::Ptr preRotate(double radians, Axis axis = X_AXIS) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.preRotate(radians, axis))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given translation to the linear part of this map + MapBase::Ptr preTranslate(const Vec3d& t) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.preTranslate(t))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given scale to the linear part of this map + MapBase::Ptr preScale(const Vec3d& s) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.preScale(s))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of prepending the given shear to the linear part of this map + MapBase::Ptr preShear(double shear, Axis axis0, Axis axis1) const override + { + return MapBase::Ptr(new NonlinearFrustumMap( + mBBox, mTaper, mDepth, mSecondMap.preShear(shear, axis0, axis1))); + } + + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given rotation to the linear part of this map. + MapBase::Ptr postRotate(double radians, Axis axis = X_AXIS) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.postRotate(radians, axis))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given translation to the linear part of this map. + MapBase::Ptr postTranslate(const Vec3d& t) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.postTranslate(t))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given scale to the linear part of this map. + MapBase::Ptr postScale(const Vec3d& s) const override + { + return MapBase::Ptr( + new NonlinearFrustumMap(mBBox, mTaper, mDepth, mSecondMap.postScale(s))); + } + /// @brief Return a MapBase::Ptr to a new map that is the result + /// of appending the given shear to the linear part of this map. + MapBase::Ptr postShear(double shear, Axis axis0, Axis axis1) const override + { + return MapBase::Ptr(new NonlinearFrustumMap( + mBBox, mTaper, mDepth, mSecondMap.postShear(shear, axis0, axis1))); + } + +private: + void init() + { + // set up as a frustum + mLx = mBBox.extents().x(); + mLy = mBBox.extents().y(); + mLz = mBBox.extents().z(); + + if (isApproxEqual(mLx,0.) || isApproxEqual(mLy,0.) || isApproxEqual(mLz,0.) ) { + OPENVDB_THROW(ArithmeticError, "The index space bounding box" + " must have at least two index points in each direction."); + } + + mXo = 0.5* mLx; + mYo = 0.5* mLy; + + // mDepth is non-dimensionalized on near + mGamma = (1./mTaper - 1) / mDepth; + + mDepthOnLz = mDepth/mLz; + mDepthOnLzLxLx = mDepthOnLz/(mLx * mLx); + + /// test for shear and non-uniform scale + mHasSimpleAffine = true; + Vec3d tmp = mSecondMap.voxelSize(); + + /// false if there is non-uniform scale + if (!isApproxEqual(tmp(0), tmp(1))) { mHasSimpleAffine = false; return; } + if (!isApproxEqual(tmp(0), tmp(2))) { mHasSimpleAffine = false; return; } + + Vec3d trans = mSecondMap.applyMap(Vec3d(0,0,0)); + /// look for shear + Vec3d tmp1 = mSecondMap.applyMap(Vec3d(1,0,0)) - trans; + Vec3d tmp2 = mSecondMap.applyMap(Vec3d(0,1,0)) - trans; + Vec3d tmp3 = mSecondMap.applyMap(Vec3d(0,0,1)) - trans; + + /// false if there is shear + if (!isApproxEqual(tmp1.dot(tmp2), 0., 1.e-7)) { mHasSimpleAffine = false; return; } + if (!isApproxEqual(tmp2.dot(tmp3), 0., 1.e-7)) { mHasSimpleAffine = false; return; } + if (!isApproxEqual(tmp3.dot(tmp1), 0., 1.e-7)) { mHasSimpleAffine = false; return; } + } + + Vec3d applyFrustumMap(const Vec3d& in) const + { + + // Move the center of the x-face of the bbox + // to the origin in index space. + Vec3d out(in); + out = out - mBBox.min(); + out.x() -= mXo; + out.y() -= mYo; + + // scale the z-direction on depth / K count + out.z() *= mDepthOnLz; + + double scale = (mGamma * out.z() + 1.)/ mLx; + + // scale the x-y on the length I count and apply tapper + out.x() *= scale ; + out.y() *= scale ; + + return out; + } + + Vec3d applyFrustumInverseMap(const Vec3d& in) const + { + // invert taper and resize: scale = 1/( (z+1)/2 (mt-1) + 1) + Vec3d out(in); + double invScale = mLx / (mGamma * out.z() + 1.); + out.x() *= invScale; + out.y() *= invScale; + + out.x() += mXo; + out.y() += mYo; + + out.z() /= mDepthOnLz; + + // move back + out = out + mBBox.min(); + return out; + } + + // bounding box in index space used in Frustum transforms. + BBoxd mBBox; + + // taper value used in constructing Frustums. + double mTaper; + double mDepth; + + // defines the second map + AffineMap mSecondMap; + + // these are derived from the above. + double mLx, mLy, mLz; + double mXo, mYo, mGamma, mDepthOnLz, mDepthOnLzLxLx; + + // true: if the mSecondMap is linear and has no shear, and has no non-uniform scale + bool mHasSimpleAffine; +}; // class NonlinearFrustumMap + + +//////////////////////////////////////// + + +/// @brief Creates the composition of two maps, each of which could be a composition. +/// In the case that each component of the composition classified as linear an +/// acceleration AffineMap is stored. +template +class CompoundMap +{ +public: + using MyType = CompoundMap; + + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + + CompoundMap() { updateAffineMatrix(); } + + CompoundMap(const FirstMapType& f, const SecondMapType& s): mFirstMap(f), mSecondMap(s) + { + updateAffineMatrix(); + } + + CompoundMap(const MyType& other): + mFirstMap(other.mFirstMap), + mSecondMap(other.mSecondMap), + mAffineMap(other.mAffineMap) + {} + + Name type() const { return mapType(); } + static Name mapType() + { + return (FirstMapType::mapType() + Name(":") + SecondMapType::mapType()); + } + + bool operator==(const MyType& other) const + { + if (mFirstMap != other.mFirstMap) return false; + if (mSecondMap != other.mSecondMap) return false; + if (mAffineMap != other.mAffineMap) return false; + return true; + } + + bool operator!=(const MyType& other) const { return !(*this == other); } + + MyType& operator=(const MyType& other) + { + mFirstMap = other.mFirstMap; + mSecondMap = other.mSecondMap; + mAffineMap = other.mAffineMap; + return *this; + } + + bool isIdentity() const + { + if (is_linear::value) { + return mAffineMap.isIdentity(); + } else { + return mFirstMap.isIdentity()&&mSecondMap.isIdentity(); + } + } + + bool isDiagonal() const { + if (is_linear::value) { + return mAffineMap.isDiagonal(); + } else { + return mFirstMap.isDiagonal()&&mSecondMap.isDiagonal(); + } + } + + AffineMap::Ptr getAffineMap() const + { + if (is_linear::value) { + AffineMap::Ptr affine(new AffineMap(mAffineMap)); + return affine; + } else { + OPENVDB_THROW(ArithmeticError, + "Constant affine matrix representation not possible for this nonlinear map"); + } + } + + // direct decompotion + const FirstMapType& firstMap() const { return mFirstMap; } + const SecondMapType& secondMap() const {return mSecondMap; } + + void setFirstMap(const FirstMapType& first) { mFirstMap = first; updateAffineMatrix(); } + void setSecondMap(const SecondMapType& second) { mSecondMap = second; updateAffineMatrix(); } + + void read(std::istream& is) + { + mAffineMap.read(is); + mFirstMap.read(is); + mSecondMap.read(is); + } + void write(std::ostream& os) const + { + mAffineMap.write(os); + mFirstMap.write(os); + mSecondMap.write(os); + } + +private: + void updateAffineMatrix() + { + if (is_linear::value) { + // both maps need to be linear, these methods are only defined for linear maps + AffineMap::Ptr first = mFirstMap.getAffineMap(); + AffineMap::Ptr second= mSecondMap.getAffineMap(); + mAffineMap = AffineMap(*first, *second); + } + } + + FirstMapType mFirstMap; + SecondMapType mSecondMap; + // used for acceleration + AffineMap mAffineMap; +}; // class CompoundMap + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_MAPS_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Mat.h b/openvdb/math/Mat.h new file mode 100644 index 00000000..25e5fa09 --- /dev/null +++ b/openvdb/math/Mat.h @@ -0,0 +1,1019 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Mat.h +/// @author Joshua Schpok + +#ifndef OPENVDB_MATH_MAT_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_MAT_HAS_BEEN_INCLUDED + +#include "Math.h" +#include +#include // for std::max() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @class Mat "Mat.h" +/// A base class for square matrices. +template +class Mat +{ +public: + using value_type = T; + using ValueType = T; + enum SIZE_ { size = SIZE }; + + // Number of cols, rows, elements + static unsigned numRows() { return SIZE; } + static unsigned numColumns() { return SIZE; } + static unsigned numElements() { return SIZE*SIZE; } + + /// Default ctor. Does nothing. Required because declaring a copy (or + /// other) constructor means the default constructor gets left out. + Mat() { } + + /// Copy constructor. Used when the class signature matches exactly. + Mat(Mat const &src) { + for (unsigned i(0); i < numElements(); ++i) { + mm[i] = src.mm[i]; + } + } + + Mat& operator=(Mat const& src) { + if (&src != this) { + for (unsigned i = 0; i < numElements(); ++i) { + mm[i] = src.mm[i]; + } + } + return *this; + } + + /// @return string representation of matrix + /// Since output is multiline, optional indentation argument prefixes + /// each newline with that much white space. It does not indent + /// the first line, since you might be calling this inline: + /// + /// cout << "matrix: " << mat.str(7) + /// + /// matrix: [[1 2] + /// [3 4]] + std::string + str(unsigned indentation = 0) const { + + std::string ret; + std::string indent; + + // We add +1 since we're indenting one for the first '[' + indent.append(indentation+1, ' '); + + ret.append("["); + + // For each row, + for (unsigned i(0); i < SIZE; i++) { + + ret.append("["); + + // For each column + for (unsigned j(0); j < SIZE; j++) { + + // Put a comma after everything except the last + if (j) ret.append(", "); + ret.append(std::to_string(mm[(i*SIZE)+j])); + } + + ret.append("]"); + + // At the end of every row (except the last)... + if (i < SIZE - 1) { + // ...suffix the row bracket with a comma, newline, and advance indentation. + ret.append(",\n"); + ret.append(indent); + } + } + + ret.append("]"); + + return ret; + } + + /// Write a Mat to an output stream + friend std::ostream& operator<<( + std::ostream& ostr, + const Mat& m) + { + ostr << m.str(); + return ostr; + } + + void write(std::ostream& os) const { + os.write(reinterpret_cast(&mm), sizeof(T)*SIZE*SIZE); + } + + void read(std::istream& is) { + is.read(reinterpret_cast(&mm), sizeof(T)*SIZE*SIZE); + } + + /// Return the maximum of the absolute of all elements in this matrix + T absMax() const { + T x = static_cast(std::fabs(mm[0])); + for (unsigned i = 1; i < numElements(); ++i) { + x = std::max(x, static_cast(std::fabs(mm[i]))); + } + return x; + } + + /// True if a Nan is present in this matrix + bool isNan() const { + for (unsigned i = 0; i < numElements(); ++i) { + if (math::isNan(mm[i])) return true; + } + return false; + } + + /// True if an Inf is present in this matrix + bool isInfinite() const { + for (unsigned i = 0; i < numElements(); ++i) { + if (math::isInfinite(mm[i])) return true; + } + return false; + } + + /// True if no Nan or Inf values are present + bool isFinite() const { + for (unsigned i = 0; i < numElements(); ++i) { + if (!math::isFinite(mm[i])) return false; + } + return true; + } + + /// True if all elements are exactly zero + bool isZero() const { + for (unsigned i = 0; i < numElements(); ++i) { + if (!math::isZero(mm[i])) return false; + } + return true; + } + +protected: + T mm[SIZE*SIZE]; +}; + + +template class Quat; +template class Vec3; + +/// @brief Return the rotation matrix specified by the given quaternion. +/// @details The quaternion is normalized and used to construct the matrix. +/// Note that the matrix is transposed to match post-multiplication semantics. +template +MatType +rotation(const Quat &q, + typename MatType::value_type eps = static_cast(1.0e-8)) +{ + using T = typename MatType::value_type; + + T qdot(q.dot(q)); + T s(0); + + if (!isApproxEqual(qdot, T(0.0),eps)) { + s = T(2.0 / qdot); + } + + T x = s*q.x(); + T y = s*q.y(); + T z = s*q.z(); + T wx = x*q.w(); + T wy = y*q.w(); + T wz = z*q.w(); + T xx = x*q.x(); + T xy = y*q.x(); + T xz = z*q.x(); + T yy = y*q.y(); + T yz = z*q.y(); + T zz = z*q.z(); + + MatType r; + r[0][0]=T(1) - (yy+zz); r[0][1]=xy + wz; r[0][2]=xz - wy; + r[1][0]=xy - wz; r[1][1]=T(1) - (xx+zz); r[1][2]=yz + wx; + r[2][0]=xz + wy; r[2][1]=yz - wx; r[2][2]=T(1) - (xx+yy); + + if(MatType::numColumns() == 4) padMat4(r); + return r; +} + + + +/// @brief Return a matrix for rotation by @a angle radians about the given @a axis. +/// @param axis The axis (one of X, Y, Z) to rotate about. +/// @param angle The rotation angle, in radians. +template +MatType +rotation(Axis axis, typename MatType::value_type angle) +{ + using T = typename MatType::value_type; + T c = static_cast(cos(angle)); + T s = static_cast(sin(angle)); + + MatType result; + result.setIdentity(); + + switch (axis) { + case X_AXIS: + result[1][1] = c; + result[1][2] = s; + result[2][1] = -s; + result[2][2] = c; + return result; + case Y_AXIS: + result[0][0] = c; + result[0][2] = -s; + result[2][0] = s; + result[2][2] = c; + return result; + case Z_AXIS: + result[0][0] = c; + result[0][1] = s; + result[1][0] = -s; + result[1][1] = c; + return result; + default: + throw ValueError("Unrecognized rotation axis"); + } +} + + +/// @brief Return a matrix for rotation by @a angle radians about the given @a axis. +/// @note The axis must be a unit vector. +template +MatType +rotation(const Vec3 &_axis, typename MatType::value_type angle) +{ + using T = typename MatType::value_type; + T txy, txz, tyz, sx, sy, sz; + + Vec3 axis(_axis.unit()); + + // compute trig properties of angle: + T c(cos(double(angle))); + T s(sin(double(angle))); + T t(1 - c); + + MatType result; + // handle diagonal elements + result[0][0] = axis[0]*axis[0] * t + c; + result[1][1] = axis[1]*axis[1] * t + c; + result[2][2] = axis[2]*axis[2] * t + c; + + txy = axis[0]*axis[1] * t; + sz = axis[2] * s; + + txz = axis[0]*axis[2] * t; + sy = axis[1] * s; + + tyz = axis[1]*axis[2] * t; + sx = axis[0] * s; + + // right handed space + // Contribution from rotation about 'z' + result[0][1] = txy + sz; + result[1][0] = txy - sz; + // Contribution from rotation about 'y' + result[0][2] = txz - sy; + result[2][0] = txz + sy; + // Contribution from rotation about 'x' + result[1][2] = tyz + sx; + result[2][1] = tyz - sx; + + if(MatType::numColumns() == 4) padMat4(result); + return MatType(result); +} + + +/// @brief Return the Euler angles composing the given rotation matrix. +/// @details Optional axes arguments describe in what order elementary rotations +/// are applied. Note that in our convention, XYZ means Rz * Ry * Rx. +/// Because we are using rows rather than columns to represent the +/// local axes of a coordinate frame, the interpretation from a local +/// reference point of view is to first rotate about the x axis, then +/// about the newly rotated y axis, and finally by the new local z axis. +/// From a fixed reference point of view, the interpretation is to +/// rotate about the stationary world z, y, and x axes respectively. +/// +/// Irrespective of the Euler angle convention, in the case of distinct +/// axes, eulerAngles() returns the x, y, and z angles in the corresponding +/// x, y, z components of the returned Vec3. For the XZX convention, the +/// left X value is returned in Vec3.x, and the right X value in Vec3.y. +/// For the ZXZ convention the left Z value is returned in Vec3.z and +/// the right Z value in Vec3.y +/// +/// Examples of reconstructing r from its Euler angle decomposition +/// +/// v = eulerAngles(r, ZYX_ROTATION); +/// rx.setToRotation(Vec3d(1,0,0), v[0]); +/// ry.setToRotation(Vec3d(0,1,0), v[1]); +/// rz.setToRotation(Vec3d(0,0,1), v[2]); +/// r = rx * ry * rz; +/// +/// v = eulerAngles(r, ZXZ_ROTATION); +/// rz1.setToRotation(Vec3d(0,0,1), v[2]); +/// rx.setToRotation (Vec3d(1,0,0), v[0]); +/// rz2.setToRotation(Vec3d(0,0,1), v[1]); +/// r = rz2 * rx * rz1; +/// +/// v = eulerAngles(r, XZX_ROTATION); +/// rx1.setToRotation (Vec3d(1,0,0), v[0]); +/// rx2.setToRotation (Vec3d(1,0,0), v[1]); +/// rz.setToRotation (Vec3d(0,0,1), v[2]); +/// r = rx2 * rz * rx1; +/// +template +Vec3 +eulerAngles( + const MatType& mat, + RotationOrder rotationOrder, + typename MatType::value_type eps = static_cast(1.0e-8)) +{ + using ValueType = typename MatType::value_type; + using V = Vec3; + ValueType phi, theta, psi; + + switch(rotationOrder) + { + case XYZ_ROTATION: + if (isApproxEqual(mat[2][0], ValueType(1.0), eps)) { + theta = ValueType(M_PI_2); + phi = ValueType(0.5 * atan2(mat[1][2], mat[1][1])); + psi = phi; + } else if (isApproxEqual(mat[2][0], ValueType(-1.0), eps)) { + theta = ValueType(-M_PI_2); + phi = ValueType(0.5 * atan2(mat[1][2], mat[1][1])); + psi = -phi; + } else { + psi = ValueType(atan2(-mat[1][0],mat[0][0])); + phi = ValueType(atan2(-mat[2][1],mat[2][2])); + theta = ValueType(atan2(mat[2][0], + sqrt( mat[2][1]*mat[2][1] + + mat[2][2]*mat[2][2]))); + } + return V(phi, theta, psi); + case ZXY_ROTATION: + if (isApproxEqual(mat[1][2], ValueType(1.0), eps)) { + theta = ValueType(M_PI_2); + phi = ValueType(0.5 * atan2(mat[0][1], mat[0][0])); + psi = phi; + } else if (isApproxEqual(mat[1][2], ValueType(-1.0), eps)) { + theta = ValueType(-M_PI/2); + phi = ValueType(0.5 * atan2(mat[0][1],mat[2][1])); + psi = -phi; + } else { + psi = ValueType(atan2(-mat[0][2], mat[2][2])); + phi = ValueType(atan2(-mat[1][0], mat[1][1])); + theta = ValueType(atan2(mat[1][2], + sqrt(mat[0][2] * mat[0][2] + + mat[2][2] * mat[2][2]))); + } + return V(theta, psi, phi); + + case YZX_ROTATION: + if (isApproxEqual(mat[0][1], ValueType(1.0), eps)) { + theta = ValueType(M_PI_2); + phi = ValueType(0.5 * atan2(mat[2][0], mat[2][2])); + psi = phi; + } else if (isApproxEqual(mat[0][1], ValueType(-1.0), eps)) { + theta = ValueType(-M_PI/2); + phi = ValueType(0.5 * atan2(mat[2][0], mat[1][0])); + psi = -phi; + } else { + psi = ValueType(atan2(-mat[2][1], mat[1][1])); + phi = ValueType(atan2(-mat[0][2], mat[0][0])); + theta = ValueType(atan2(mat[0][1], + sqrt(mat[0][0] * mat[0][0] + + mat[0][2] * mat[0][2]))); + } + return V(psi, phi, theta); + + case XZX_ROTATION: + + if (isApproxEqual(mat[0][0], ValueType(1.0), eps)) { + theta = ValueType(0.0); + phi = ValueType(0.5 * atan2(mat[1][2], mat[1][1])); + psi = phi; + } else if (isApproxEqual(mat[0][0], ValueType(-1.0), eps)) { + theta = ValueType(M_PI); + psi = ValueType(0.5 * atan2(mat[2][1], -mat[1][1])); + phi = - psi; + } else { + psi = ValueType(atan2(mat[2][0], -mat[1][0])); + phi = ValueType(atan2(mat[0][2], mat[0][1])); + theta = ValueType(atan2(sqrt(mat[0][1] * mat[0][1] + + mat[0][2] * mat[0][2]), + mat[0][0])); + } + return V(phi, psi, theta); + + case ZXZ_ROTATION: + + if (isApproxEqual(mat[2][2], ValueType(1.0), eps)) { + theta = ValueType(0.0); + phi = ValueType(0.5 * atan2(mat[0][1], mat[0][0])); + psi = phi; + } else if (isApproxEqual(mat[2][2], ValueType(-1.0), eps)) { + theta = ValueType(M_PI); + phi = ValueType(0.5 * atan2(mat[0][1], mat[0][0])); + psi = -phi; + } else { + psi = ValueType(atan2(mat[0][2], mat[1][2])); + phi = ValueType(atan2(mat[2][0], -mat[2][1])); + theta = ValueType(atan2(sqrt(mat[0][2] * mat[0][2] + + mat[1][2] * mat[1][2]), + mat[2][2])); + } + return V(theta, psi, phi); + + case YXZ_ROTATION: + + if (isApproxEqual(mat[2][1], ValueType(1.0), eps)) { + theta = ValueType(-M_PI_2); + phi = ValueType(0.5 * atan2(-mat[1][0], mat[0][0])); + psi = phi; + } else if (isApproxEqual(mat[2][1], ValueType(-1.0), eps)) { + theta = ValueType(M_PI_2); + phi = ValueType(0.5 * atan2(mat[1][0], mat[0][0])); + psi = -phi; + } else { + psi = ValueType(atan2(mat[0][1], mat[1][1])); + phi = ValueType(atan2(mat[2][0], mat[2][2])); + theta = ValueType(atan2(-mat[2][1], + sqrt(mat[0][1] * mat[0][1] + + mat[1][1] * mat[1][1]))); + } + return V(theta, phi, psi); + + case ZYX_ROTATION: + + if (isApproxEqual(mat[0][2], ValueType(1.0), eps)) { + theta = ValueType(-M_PI_2); + phi = ValueType(0.5 * atan2(-mat[1][0], mat[1][1])); + psi = phi; + } else if (isApproxEqual(mat[0][2], ValueType(-1.0), eps)) { + theta = ValueType(M_PI_2); + phi = ValueType(0.5 * atan2(mat[2][1], mat[2][0])); + psi = -phi; + } else { + psi = ValueType(atan2(mat[1][2], mat[2][2])); + phi = ValueType(atan2(mat[0][1], mat[0][0])); + theta = ValueType(atan2(-mat[0][2], + sqrt(mat[0][1] * mat[0][1] + + mat[0][0] * mat[0][0]))); + } + return V(psi, theta, phi); + + case XZY_ROTATION: + + if (isApproxEqual(mat[1][0], ValueType(-1.0), eps)) { + theta = ValueType(M_PI_2); + psi = ValueType(0.5 * atan2(mat[2][1], mat[2][2])); + phi = -psi; + } else if (isApproxEqual(mat[1][0], ValueType(1.0), eps)) { + theta = ValueType(-M_PI_2); + psi = ValueType(0.5 * atan2(- mat[2][1], mat[2][2])); + phi = psi; + } else { + psi = ValueType(atan2(mat[2][0], mat[0][0])); + phi = ValueType(atan2(mat[1][2], mat[1][1])); + theta = ValueType(atan2(- mat[1][0], + sqrt(mat[1][1] * mat[1][1] + + mat[1][2] * mat[1][2]))); + } + return V(phi, psi, theta); + } + + OPENVDB_THROW(NotImplementedError, "Euler extraction sequence not implemented"); +} + + +/// @brief Return a rotation matrix that maps @a v1 onto @a v2 +/// about the cross product of @a v1 and @a v2. +/// +template +inline MatType +rotation( + const Vec3& _v1, + const Vec3& _v2, + typename MatType::value_type eps = static_cast(1.0e-8)) +{ + using T = typename MatType::value_type; + + Vec3 v1(_v1); + Vec3 v2(_v2); + + // Check if v1 and v2 are unit length + if (!isApproxEqual(T(1), v1.dot(v1), eps)) { + v1.normalize(); + } + if (!isApproxEqual(T(1), v2.dot(v2), eps)) { + v2.normalize(); + } + + Vec3 cross; + cross.cross(v1, v2); + + if (isApproxEqual(cross[0], zeroVal(), eps) && + isApproxEqual(cross[1], zeroVal(), eps) && + isApproxEqual(cross[2], zeroVal(), eps)) { + + + // Given two unit vectors v1 and v2 that are nearly parallel, build a + // rotation matrix that maps v1 onto v2. First find which principal axis + // p is closest to perpendicular to v1. Find a reflection that exchanges + // v1 and p, and find a reflection that exchanges p2 and v2. The desired + // rotation matrix is the composition of these two reflections. See the + // paper "Efficiently Building a Matrix to Rotate One Vector to + // Another" by Tomas Moller and John Hughes in Journal of Graphics + // Tools Vol 4, No 4 for details. + + Vec3 u, v, p(0.0, 0.0, 0.0); + + double x = Abs(v1[0]); + double y = Abs(v1[1]); + double z = Abs(v1[2]); + + if (x < y) { + if (z < x) { + p[2] = 1; + } else { + p[0] = 1; + } + } else { + if (z < y) { + p[2] = 1; + } else { + p[1] = 1; + } + } + u = p - v1; + v = p - v2; + + double udot = u.dot(u); + double vdot = v.dot(v); + + double a = -2 / udot; + double b = -2 / vdot; + double c = 4 * u.dot(v) / (udot * vdot); + + MatType result; + result.setIdentity(); + + for (int j = 0; j < 3; j++) { + for (int i = 0; i < 3; i++) + result[i][j] = static_cast( + a * u[i] * u[j] + b * v[i] * v[j] + c * v[j] * u[i]); + } + result[0][0] += 1.0; + result[1][1] += 1.0; + result[2][2] += 1.0; + + if(MatType::numColumns() == 4) padMat4(result); + return result; + + } else { + double c = v1.dot(v2); + double a = (1.0 - c) / cross.dot(cross); + + double a0 = a * cross[0]; + double a1 = a * cross[1]; + double a2 = a * cross[2]; + + double a01 = a0 * cross[1]; + double a02 = a0 * cross[2]; + double a12 = a1 * cross[2]; + + MatType r; + + r[0][0] = static_cast(c + a0 * cross[0]); + r[0][1] = static_cast(a01 + cross[2]); + r[0][2] = static_cast(a02 - cross[1]); + r[1][0] = static_cast(a01 - cross[2]); + r[1][1] = static_cast(c + a1 * cross[1]); + r[1][2] = static_cast(a12 + cross[0]); + r[2][0] = static_cast(a02 + cross[1]); + r[2][1] = static_cast(a12 - cross[0]); + r[2][2] = static_cast(c + a2 * cross[2]); + + if(MatType::numColumns() == 4) padMat4(r); + return r; + + } +} + + +/// Return a matrix that scales by @a s. +template +MatType +scale(const Vec3& s) +{ + // Gets identity, then sets top 3 diagonal + // Inefficient by 3 sets. + + MatType result; + result.setIdentity(); + result[0][0] = s[0]; + result[1][1] = s[1]; + result[2][2] = s[2]; + + return result; +} + + +/// Return a Vec3 representing the lengths of the passed matrix's upper 3×3's rows. +template +Vec3 +getScale(const MatType &mat) +{ + using V = Vec3; + return V( + V(mat[0][0], mat[0][1], mat[0][2]).length(), + V(mat[1][0], mat[1][1], mat[1][2]).length(), + V(mat[2][0], mat[2][1], mat[2][2]).length()); +} + + +/// @brief Return a copy of the given matrix with its upper 3×3 rows normalized. +/// @details This can be geometrically interpreted as a matrix with no scaling +/// along its major axes. +template +MatType +unit(const MatType &mat, typename MatType::value_type eps = 1.0e-8) +{ + Vec3 dud; + return unit(mat, eps, dud); +} + + +/// @brief Return a copy of the given matrix with its upper 3×3 rows normalized, +/// and return the length of each of these rows in @a scaling. +/// @details This can be geometrically interpretted as a matrix with no scaling +/// along its major axes, and the scaling in the input vector +template +MatType +unit( + const MatType &in, + typename MatType::value_type eps, + Vec3& scaling) +{ + using T = typename MatType::value_type; + MatType result(in); + + for (int i(0); i < 3; i++) { + try { + const Vec3 u( + Vec3(in[i][0], in[i][1], in[i][2]).unit(eps, scaling[i])); + for (int j=0; j<3; j++) result[i][j] = u[j]; + } catch (ArithmeticError&) { + for (int j=0; j<3; j++) result[i][j] = 0; + } + } + return result; +} + + +/// @brief Set the matrix to a shear along @a axis0 by a fraction of @a axis1. +/// @param axis0 The fixed axis of the shear. +/// @param axis1 The shear axis. +/// @param shear The shear factor. +template +MatType +shear(Axis axis0, Axis axis1, typename MatType::value_type shear) +{ + int index0 = static_cast(axis0); + int index1 = static_cast(axis1); + + MatType result; + result.setIdentity(); + if (axis0 == axis1) { + result[index1][index0] = shear + 1; + } else { + result[index1][index0] = shear; + } + + return result; +} + + +/// Return a matrix as the cross product of the given vector. +template +MatType +skew(const Vec3 &skew) +{ + using T = typename MatType::value_type; + + MatType r; + r[0][0] = T(0); r[0][1] = skew.z(); r[0][2] = -skew.y(); + r[1][0] = -skew.z(); r[1][1] = T(0); r[2][1] = skew.x(); + r[2][0] = skew.y(); r[2][1] = -skew.x(); r[2][2] = T(0); + + if(MatType::numColumns() == 4) padMat4(r); + return r; +} + + +/// @brief Return an orientation matrix such that z points along @a direction, +/// and y is along the @a direction / @a vertical plane. +template +MatType +aim(const Vec3& direction, + const Vec3& vertical) +{ + using T = typename MatType::value_type; + Vec3 forward(direction.unit()); + Vec3 horizontal(vertical.unit().cross(forward).unit()); + Vec3 up(forward.cross(horizontal).unit()); + + MatType r; + + r[0][0]=horizontal.x(); r[0][1]=horizontal.y(); r[0][2]=horizontal.z(); + r[1][0]=up.x(); r[1][1]=up.y(); r[1][2]=up.z(); + r[2][0]=forward.x(); r[2][1]=forward.y(); r[2][2]=forward.z(); + + if(MatType::numColumns() == 4) padMat4(r); + return r; +} + +/// @brief This function snaps a specific axis to a specific direction, +/// preserving scaling. +/// @details It does this using minimum energy, thus posing a unique solution if +/// basis & direction aren't parallel. +/// @note @a direction need not be unit. +template +inline MatType +snapMatBasis(const MatType& source, Axis axis, const Vec3& direction) +{ + using T = typename MatType::value_type; + + Vec3 unitDir(direction.unit()); + Vec3 ourUnitAxis(source.row(axis).unit()); + + // Are the two parallel? + T parallel = unitDir.dot(ourUnitAxis); + + // Already snapped! + if (isApproxEqual(parallel, T(1.0))) return source; + + if (isApproxEqual(parallel, T(-1.0))) { + OPENVDB_THROW(ValueError, "Cannot snap to inverse axis"); + } + + // Find angle between our basis and the one specified + T angleBetween(angle(unitDir, ourUnitAxis)); + // Caclulate axis to rotate along + Vec3 rotationAxis = unitDir.cross(ourUnitAxis); + + MatType rotation; + rotation.setToRotation(rotationAxis, angleBetween); + + return source * rotation; +} + +/// @brief Write 0s along Mat4's last row and column, and a 1 on its diagonal. +/// @details Useful initialization when we're initializing just the 3×3 block. +template +inline MatType& +padMat4(MatType& dest) +{ + dest[0][3] = dest[1][3] = dest[2][3] = 0; + dest[3][2] = dest[3][1] = dest[3][0] = 0; + dest[3][3] = 1; + + return dest; +} + + +/// @brief Solve for A=B*B, given A. +/// @details Denman-Beavers square root iteration +template +inline void +sqrtSolve(const MatType& aA, MatType& aB, double aTol=0.01) +{ + unsigned int iterations = static_cast(log(aTol)/log(0.5)); + + MatType Y[2], Z[2]; + Y[0] = aA; + Z[0] = MatType::identity(); + + unsigned int current = 0; + for (unsigned int iteration=0; iteration < iterations; iteration++) { + unsigned int last = current; + current = !current; + + MatType invY = Y[last].inverse(); + MatType invZ = Z[last].inverse(); + + Y[current] = 0.5 * (Y[last] + invZ); + Z[current] = 0.5 * (Z[last] + invY); + } + aB = Y[current]; +} + + +template +inline void +powSolve(const MatType& aA, MatType& aB, double aPower, double aTol=0.01) +{ + unsigned int iterations = static_cast(log(aTol)/log(0.5)); + + const bool inverted = (aPower < 0.0); + if (inverted) { aPower = -aPower; } + + unsigned int whole = static_cast(aPower); + double fraction = aPower - whole; + + MatType R = MatType::identity(); + MatType partial = aA; + + double contribution = 1.0; + for (unsigned int iteration = 0; iteration < iterations; iteration++) { + sqrtSolve(partial, partial, aTol); + contribution *= 0.5; + if (fraction >= contribution) { + R *= partial; + fraction -= contribution; + } + } + + partial = aA; + while (whole) { + if (whole & 1) { R *= partial; } + whole >>= 1; + if (whole) { partial *= partial; } + } + + if (inverted) { aB = R.inverse(); } + else { aB = R; } +} + + +/// @brief Determine if a matrix is an identity matrix. +template +inline bool +isIdentity(const MatType& m) +{ + return m.eq(MatType::identity()); +} + + +/// @brief Determine if a matrix is invertible. +template +inline bool +isInvertible(const MatType& m) +{ + using ValueType = typename MatType::ValueType; + return !isApproxEqual(m.det(), ValueType(0)); +} + + +/// @brief Determine if a matrix is symmetric. +/// @details This implicitly uses math::isApproxEqual() to determine equality. +template +inline bool +isSymmetric(const MatType& m) +{ + return m.eq(m.transpose()); +} + + +/// Determine if a matrix is unitary (i.e., rotation or reflection). +template +inline bool +isUnitary(const MatType& m) +{ + using ValueType = typename MatType::ValueType; + if (!isApproxEqual(std::abs(m.det()), ValueType(1.0))) return false; + // check that the matrix transpose is the inverse + MatType temp = m * m.transpose(); + return temp.eq(MatType::identity()); +} + + +/// Determine if a matrix is diagonal. +template +inline bool +isDiagonal(const MatType& mat) +{ + int n = MatType::size; + typename MatType::ValueType temp(0); + for (int i = 0; i < n; ++i) { + for (int j = 0; j < n; ++j) { + if (i != j) { + temp += std::abs(mat(i,j)); + } + } + } + return isApproxEqual(temp, typename MatType::ValueType(0.0)); +} + + +/// Return the L∞ norm of an N×N matrix. +template +typename MatType::ValueType +lInfinityNorm(const MatType& matrix) +{ + int n = MatType::size; + typename MatType::ValueType norm = 0; + + for( int j = 0; jL1 norm of an N×N matrix. +template +typename MatType::ValueType +lOneNorm(const MatType& matrix) +{ + int n = MatType::size; + typename MatType::ValueType norm = 0; + + for( int i = 0; i +bool +polarDecomposition(const MatType& input, MatType& unitary, + MatType& positive_hermitian, unsigned int MAX_ITERATIONS=100) +{ + unitary = input; + MatType new_unitary(input); + MatType unitary_inv; + + if (fabs(unitary.det()) < math::Tolerance::value()) return false; + + unsigned int iteration(0); + + typename MatType::ValueType linf_of_u; + typename MatType::ValueType l1nm_of_u; + typename MatType::ValueType linf_of_u_inv; + typename MatType::ValueType l1nm_of_u_inv; + typename MatType::ValueType l1_error = 100; + double gamma; + + do { + unitary_inv = unitary.inverse(); + linf_of_u = lInfinityNorm(unitary); + l1nm_of_u = lOneNorm(unitary); + + linf_of_u_inv = lInfinityNorm(unitary_inv); + l1nm_of_u_inv = lOneNorm(unitary_inv); + + gamma = sqrt( sqrt( (l1nm_of_u_inv * linf_of_u_inv ) / (l1nm_of_u * linf_of_u) )); + + new_unitary = 0.5*(gamma * unitary + (1./gamma) * unitary_inv.transpose() ); + + l1_error = lInfinityNorm(unitary - new_unitary); + unitary = new_unitary; + + /// this generally converges in less than ten iterations + if (iteration > MAX_ITERATIONS) return false; + iteration++; + } while (l1_error > math::Tolerance::value()); + + positive_hermitian = unitary.transpose() * input; + return true; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_MAT_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Mat3.h b/openvdb/math/Mat3.h new file mode 100644 index 00000000..fb87f0fa --- /dev/null +++ b/openvdb/math/Mat3.h @@ -0,0 +1,828 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_MAT3_H_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_MAT3_H_HAS_BEEN_INCLUDED + +#include +#include "Vec3.h" +#include "Mat.h" +#include // for std::copy() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Vec3; +template class Mat4; +template class Quat; + +/// @class Mat3 Mat3.h +/// @brief 3x3 matrix class. +template +class Mat3: public Mat<3, T> +{ +public: + /// Data type held by the matrix. + using value_type = T; + using ValueType = T; + using MyBase = Mat<3, T>; + /// Trivial constructor, the matrix is NOT initialized + Mat3() {} + + /// Constructor given the quaternion rotation, e.g. Mat3f m(q); + /// The quaternion is normalized and used to construct the matrix + Mat3(const Quat &q) + { setToRotation(q); } + + + /// Constructor given array of elements, the ordering is in row major form: + /** @verbatim + a b c + d e f + g h i + @endverbatim */ + template + Mat3(Source a, Source b, Source c, + Source d, Source e, Source f, + Source g, Source h, Source i) + { + MyBase::mm[0] = static_cast(a); + MyBase::mm[1] = static_cast(b); + MyBase::mm[2] = static_cast(c); + MyBase::mm[3] = static_cast(d); + MyBase::mm[4] = static_cast(e); + MyBase::mm[5] = static_cast(f); + MyBase::mm[6] = static_cast(g); + MyBase::mm[7] = static_cast(h); + MyBase::mm[8] = static_cast(i); + } // constructor1Test + + /// Construct matrix from rows or columns vectors (defaults to rows + /// for historical reasons) + template + Mat3(const Vec3 &v1, const Vec3 &v2, const Vec3 &v3, bool rows = true) + { + if (rows) { + this->setRows(v1, v2, v3); + } else { + this->setColumns(v1, v2, v3); + } + } + + /// Constructor given array of elements, the ordering is in row major form:\n + /// a[0] a[1] a[2]\n + /// a[3] a[4] a[5]\n + /// a[6] a[7] a[8]\n + template + Mat3(Source *a) + { + MyBase::mm[0] = static_cast(a[0]); + MyBase::mm[1] = static_cast(a[1]); + MyBase::mm[2] = static_cast(a[2]); + MyBase::mm[3] = static_cast(a[3]); + MyBase::mm[4] = static_cast(a[4]); + MyBase::mm[5] = static_cast(a[5]); + MyBase::mm[6] = static_cast(a[6]); + MyBase::mm[7] = static_cast(a[7]); + MyBase::mm[8] = static_cast(a[8]); + } // constructor1Test + + /// Copy constructor + Mat3(const Mat<3, T> &m) + { + for (int i=0; i<3; ++i) { + for (int j=0; j<3; ++j) { + MyBase::mm[i*3 + j] = m[i][j]; + } + } + } + + /// Conversion constructor + template + explicit Mat3(const Mat3 &m) + { + for (int i=0; i<3; ++i) { + for (int j=0; j<3; ++j) { + MyBase::mm[i*3 + j] = static_cast(m[i][j]); + } + } + } + + /// Conversion from Mat4 (copies top left) + explicit Mat3(const Mat4 &m) + { + for (int i=0; i<3; ++i) { + for (int j=0; j<3; ++j) { + MyBase::mm[i*3 + j] = m[i][j]; + } + } + } + + /// Predefined constant for identity matrix + static const Mat3& identity() { + static const Mat3 sIdentity = Mat3( + 1, 0, 0, + 0, 1, 0, + 0, 0, 1 + ); + return sIdentity; + } + + /// Predefined constant for zero matrix + static const Mat3& zero() { + static const Mat3 sZero = Mat3( + 0, 0, 0, + 0, 0, 0, + 0, 0, 0 + ); + return sZero; + } + + /// Set ith row to vector v + void setRow(int i, const Vec3 &v) + { + // assert(i>=0 && i<3); + int i3 = i * 3; + + MyBase::mm[i3+0] = v[0]; + MyBase::mm[i3+1] = v[1]; + MyBase::mm[i3+2] = v[2]; + } // rowColumnTest + + /// Get ith row, e.g. Vec3d v = m.row(1); + Vec3 row(int i) const + { + // assert(i>=0 && i<3); + return Vec3((*this)(i,0), (*this)(i,1), (*this)(i,2)); + } // rowColumnTest + + /// Set jth column to vector v + void setCol(int j, const Vec3& v) + { + // assert(j>=0 && j<3); + MyBase::mm[0+j] = v[0]; + MyBase::mm[3+j] = v[1]; + MyBase::mm[6+j] = v[2]; + } // rowColumnTest + + /// Get jth column, e.g. Vec3d v = m.col(0); + Vec3 col(int j) const + { + // assert(j>=0 && j<3); + return Vec3((*this)(0,j), (*this)(1,j), (*this)(2,j)); + } // rowColumnTest + + // NB: The following two methods were changed to + // work around a gccWS5 compiler issue related to strict + // aliasing (see FX-475). + + //@{ + /// Array style reference to ith row + /// e.g. m[1][2] = 4; + T* operator[](int i) { return &(MyBase::mm[i*3]); } + const T* operator[](int i) const { return &(MyBase::mm[i*3]); } + //@} + + T* asPointer() {return MyBase::mm;} + const T* asPointer() const {return MyBase::mm;} + + /// Alternative indexed reference to the elements + /// Note that the indices are row first and column second. + /// e.g. m(0,0) = 1; + T& operator()(int i, int j) + { + // assert(i>=0 && i<3); + // assert(j>=0 && j<3); + return MyBase::mm[3*i+j]; + } // trivial + + /// Alternative indexed constant reference to the elements, + /// Note that the indices are row first and column second. + /// e.g. float f = m(1,0); + T operator()(int i, int j) const + { + // assert(i>=0 && i<3); + // assert(j>=0 && j<3); + return MyBase::mm[3*i+j]; + } // trivial + + /// Set the rows of this matrix to the vectors v1, v2, v3 + void setRows(const Vec3 &v1, const Vec3 &v2, const Vec3 &v3) + { + MyBase::mm[0] = v1[0]; + MyBase::mm[1] = v1[1]; + MyBase::mm[2] = v1[2]; + MyBase::mm[3] = v2[0]; + MyBase::mm[4] = v2[1]; + MyBase::mm[5] = v2[2]; + MyBase::mm[6] = v3[0]; + MyBase::mm[7] = v3[1]; + MyBase::mm[8] = v3[2]; + } // setRows + + /// Set the columns of this matrix to the vectors v1, v2, v3 + void setColumns(const Vec3 &v1, const Vec3 &v2, const Vec3 &v3) + { + MyBase::mm[0] = v1[0]; + MyBase::mm[1] = v2[0]; + MyBase::mm[2] = v3[0]; + MyBase::mm[3] = v1[1]; + MyBase::mm[4] = v2[1]; + MyBase::mm[5] = v3[1]; + MyBase::mm[6] = v1[2]; + MyBase::mm[7] = v2[2]; + MyBase::mm[8] = v3[2]; + } // setColumns + + /// Set diagonal and symmetric triangular components + void setSymmetric(const Vec3 &vdiag, const Vec3 &vtri) + { + MyBase::mm[0] = vdiag[0]; + MyBase::mm[1] = vtri[0]; + MyBase::mm[2] = vtri[1]; + MyBase::mm[3] = vtri[0]; + MyBase::mm[4] = vdiag[1]; + MyBase::mm[5] = vtri[2]; + MyBase::mm[6] = vtri[1]; + MyBase::mm[7] = vtri[2]; + MyBase::mm[8] = vdiag[2]; + } // setSymmetricTest + + /// Return a matrix with the prescribed diagonal and symmetric triangular components. + static Mat3 symmetric(const Vec3 &vdiag, const Vec3 &vtri) + { + return Mat3( + vdiag[0], vtri[0], vtri[1], + vtri[0], vdiag[1], vtri[2], + vtri[1], vtri[2], vdiag[2] + ); + } + + /// Set the matrix as cross product of the given vector + void setSkew(const Vec3 &v) + {*this = skew(v);} + + /// @brief Set this matrix to the rotation matrix specified by the quaternion + /// @details The quaternion is normalized and used to construct the matrix. + /// Note that the matrix is transposed to match post-multiplication semantics. + void setToRotation(const Quat &q) + {*this = rotation >(q);} + + /// @brief Set this matrix to the rotation specified by @a axis and @a angle + /// @details The axis must be unit vector + void setToRotation(const Vec3 &axis, T angle) + {*this = rotation >(axis, angle);} + + /// Set this matrix to zero + void setZero() + { + MyBase::mm[0] = 0; + MyBase::mm[1] = 0; + MyBase::mm[2] = 0; + MyBase::mm[3] = 0; + MyBase::mm[4] = 0; + MyBase::mm[5] = 0; + MyBase::mm[6] = 0; + MyBase::mm[7] = 0; + MyBase::mm[8] = 0; + } // trivial + + /// Set this matrix to identity + void setIdentity() + { + MyBase::mm[0] = 1; + MyBase::mm[1] = 0; + MyBase::mm[2] = 0; + MyBase::mm[3] = 0; + MyBase::mm[4] = 1; + MyBase::mm[5] = 0; + MyBase::mm[6] = 0; + MyBase::mm[7] = 0; + MyBase::mm[8] = 1; + } // trivial + + /// Assignment operator + template + const Mat3& operator=(const Mat3 &m) + { + const Source *src = m.asPointer(); + + // don't suppress type conversion warnings + std::copy(src, (src + this->numElements()), MyBase::mm); + return *this; + } // opEqualToTest + + /// Return @c true if this matrix is equivalent to @a m within a tolerance of @a eps. + bool eq(const Mat3 &m, T eps=1.0e-8) const + { + return (isApproxEqual(MyBase::mm[0],m.mm[0],eps) && + isApproxEqual(MyBase::mm[1],m.mm[1],eps) && + isApproxEqual(MyBase::mm[2],m.mm[2],eps) && + isApproxEqual(MyBase::mm[3],m.mm[3],eps) && + isApproxEqual(MyBase::mm[4],m.mm[4],eps) && + isApproxEqual(MyBase::mm[5],m.mm[5],eps) && + isApproxEqual(MyBase::mm[6],m.mm[6],eps) && + isApproxEqual(MyBase::mm[7],m.mm[7],eps) && + isApproxEqual(MyBase::mm[8],m.mm[8],eps)); + } // trivial + + /// Negation operator, for e.g. m1 = -m2; + Mat3 operator-() const + { + return Mat3( + -MyBase::mm[0], -MyBase::mm[1], -MyBase::mm[2], + -MyBase::mm[3], -MyBase::mm[4], -MyBase::mm[5], + -MyBase::mm[6], -MyBase::mm[7], -MyBase::mm[8] + ); + } // trivial + + /// Multiplication operator, e.g. M = scalar * M; + // friend Mat3 operator*(T scalar, const Mat3& m) { + // return m*scalar; + // } + + /// Multiply each element of this matrix by @a scalar. + template + const Mat3& operator*=(S scalar) + { + MyBase::mm[0] *= scalar; + MyBase::mm[1] *= scalar; + MyBase::mm[2] *= scalar; + MyBase::mm[3] *= scalar; + MyBase::mm[4] *= scalar; + MyBase::mm[5] *= scalar; + MyBase::mm[6] *= scalar; + MyBase::mm[7] *= scalar; + MyBase::mm[8] *= scalar; + return *this; + } + + /// Add each element of the given matrix to the corresponding element of this matrix. + template + const Mat3 &operator+=(const Mat3 &m1) + { + const S *s = m1.asPointer(); + + MyBase::mm[0] += s[0]; + MyBase::mm[1] += s[1]; + MyBase::mm[2] += s[2]; + MyBase::mm[3] += s[3]; + MyBase::mm[4] += s[4]; + MyBase::mm[5] += s[5]; + MyBase::mm[6] += s[6]; + MyBase::mm[7] += s[7]; + MyBase::mm[8] += s[8]; + return *this; + } + + /// Subtract each element of the given matrix from the corresponding element of this matrix. + template + const Mat3 &operator-=(const Mat3 &m1) + { + const S *s = m1.asPointer(); + + MyBase::mm[0] -= s[0]; + MyBase::mm[1] -= s[1]; + MyBase::mm[2] -= s[2]; + MyBase::mm[3] -= s[3]; + MyBase::mm[4] -= s[4]; + MyBase::mm[5] -= s[5]; + MyBase::mm[6] -= s[6]; + MyBase::mm[7] -= s[7]; + MyBase::mm[8] -= s[8]; + return *this; + } + + /// Multiply this matrix by the given matrix. + template + const Mat3 &operator*=(const Mat3 &m1) + { + Mat3 m0(*this); + const T* s0 = m0.asPointer(); + const S* s1 = m1.asPointer(); + + MyBase::mm[0] = static_cast(s0[0] * s1[0] + + s0[1] * s1[3] + + s0[2] * s1[6]); + MyBase::mm[1] = static_cast(s0[0] * s1[1] + + s0[1] * s1[4] + + s0[2] * s1[7]); + MyBase::mm[2] = static_cast(s0[0] * s1[2] + + s0[1] * s1[5] + + s0[2] * s1[8]); + + MyBase::mm[3] = static_cast(s0[3] * s1[0] + + s0[4] * s1[3] + + s0[5] * s1[6]); + MyBase::mm[4] = static_cast(s0[3] * s1[1] + + s0[4] * s1[4] + + s0[5] * s1[7]); + MyBase::mm[5] = static_cast(s0[3] * s1[2] + + s0[4] * s1[5] + + s0[5] * s1[8]); + + MyBase::mm[6] = static_cast(s0[6] * s1[0] + + s0[7] * s1[3] + + s0[8] * s1[6]); + MyBase::mm[7] = static_cast(s0[6] * s1[1] + + s0[7] * s1[4] + + s0[8] * s1[7]); + MyBase::mm[8] = static_cast(s0[6] * s1[2] + + s0[7] * s1[5] + + s0[8] * s1[8]); + + return *this; + } + + /// @brief Return the cofactor matrix of this matrix. + Mat3 cofactor() const + { + return Mat3( + MyBase::mm[4] * MyBase::mm[8] - MyBase::mm[5] * MyBase::mm[7], + MyBase::mm[5] * MyBase::mm[6] - MyBase::mm[3] * MyBase::mm[8], + MyBase::mm[3] * MyBase::mm[7] - MyBase::mm[4] * MyBase::mm[6], + MyBase::mm[2] * MyBase::mm[7] - MyBase::mm[1] * MyBase::mm[8], + MyBase::mm[0] * MyBase::mm[8] - MyBase::mm[2] * MyBase::mm[6], + MyBase::mm[1] * MyBase::mm[6] - MyBase::mm[0] * MyBase::mm[7], + MyBase::mm[1] * MyBase::mm[5] - MyBase::mm[2] * MyBase::mm[4], + MyBase::mm[2] * MyBase::mm[3] - MyBase::mm[0] * MyBase::mm[5], + MyBase::mm[0] * MyBase::mm[4] - MyBase::mm[1] * MyBase::mm[3]); + } + + /// Return the adjoint of this matrix, i.e., the transpose of its cofactor. + Mat3 adjoint() const + { + return Mat3( + MyBase::mm[4] * MyBase::mm[8] - MyBase::mm[5] * MyBase::mm[7], + MyBase::mm[2] * MyBase::mm[7] - MyBase::mm[1] * MyBase::mm[8], + MyBase::mm[1] * MyBase::mm[5] - MyBase::mm[2] * MyBase::mm[4], + MyBase::mm[5] * MyBase::mm[6] - MyBase::mm[3] * MyBase::mm[8], + MyBase::mm[0] * MyBase::mm[8] - MyBase::mm[2] * MyBase::mm[6], + MyBase::mm[2] * MyBase::mm[3] - MyBase::mm[0] * MyBase::mm[5], + MyBase::mm[3] * MyBase::mm[7] - MyBase::mm[4] * MyBase::mm[6], + MyBase::mm[1] * MyBase::mm[6] - MyBase::mm[0] * MyBase::mm[7], + MyBase::mm[0] * MyBase::mm[4] - MyBase::mm[1] * MyBase::mm[3]); + + } // adjointTest + + /// returns transpose of this + Mat3 transpose() const + { + return Mat3( + MyBase::mm[0], MyBase::mm[3], MyBase::mm[6], + MyBase::mm[1], MyBase::mm[4], MyBase::mm[7], + MyBase::mm[2], MyBase::mm[5], MyBase::mm[8]); + + } // transposeTest + + /// returns inverse of this + /// @throws ArithmeticError if singular + Mat3 inverse(T tolerance = 0) const + { + Mat3 inv(this->adjoint()); + + const T det = inv.mm[0]*MyBase::mm[0] + inv.mm[1]*MyBase::mm[3] + inv.mm[2]*MyBase::mm[6]; + + // If the determinant is 0, m was singular and the result will be invalid. + if (isApproxEqual(det,T(0.0),tolerance)) { + OPENVDB_THROW(ArithmeticError, "Inversion of singular 3x3 matrix"); + } + return inv * (T(1)/det); + } // invertTest + + /// Determinant of matrix + T det() const + { + const T co00 = MyBase::mm[4]*MyBase::mm[8] - MyBase::mm[5]*MyBase::mm[7]; + const T co10 = MyBase::mm[5]*MyBase::mm[6] - MyBase::mm[3]*MyBase::mm[8]; + const T co20 = MyBase::mm[3]*MyBase::mm[7] - MyBase::mm[4]*MyBase::mm[6]; + return MyBase::mm[0]*co00 + MyBase::mm[1]*co10 + MyBase::mm[2]*co20; + } // determinantTest + + /// Trace of matrix + T trace() const + { + return MyBase::mm[0]+MyBase::mm[4]+MyBase::mm[8]; + } + + /// This function snaps a specific axis to a specific direction, + /// preserving scaling. It does this using minimum energy, thus + /// posing a unique solution if basis & direction arent parralel. + /// Direction need not be unit. + Mat3 snapBasis(Axis axis, const Vec3 &direction) + { + return snapMatBasis(*this, axis, direction); + } + + /// Return the transformed vector by this matrix. + /// This function is equivalent to post-multiplying the matrix. + template + Vec3 transform(const Vec3 &v) const + { + return static_cast< Vec3 >(v * *this); + } // xformVectorTest + + /// Return the transformed vector by transpose of this matrix. + /// This function is equivalent to pre-multiplying the matrix. + template + Vec3 pretransform(const Vec3 &v) const + { + return static_cast< Vec3 >(*this * v); + } // xformTVectorTest + + + /// @brief Treat @a diag as a diagonal matrix and return the product + /// of this matrix with @a diag (from the right). + Mat3 timesDiagonal(const Vec3& diag) const + { + Mat3 ret(*this); + + ret.mm[0] *= diag(0); + ret.mm[1] *= diag(1); + ret.mm[2] *= diag(2); + ret.mm[3] *= diag(0); + ret.mm[4] *= diag(1); + ret.mm[5] *= diag(2); + ret.mm[6] *= diag(0); + ret.mm[7] *= diag(1); + ret.mm[8] *= diag(2); + return ret; + } +}; // class Mat3 + + +/// @relates Mat3 +/// @brief Equality operator, does exact floating point comparisons +template +bool operator==(const Mat3 &m0, const Mat3 &m1) +{ + const T0 *t0 = m0.asPointer(); + const T1 *t1 = m1.asPointer(); + + for (int i=0; i<9; ++i) { + if (!isExactlyEqual(t0[i], t1[i])) return false; + } + return true; +} + +/// @relates Mat3 +/// @brief Inequality operator, does exact floating point comparisons +template +bool operator!=(const Mat3 &m0, const Mat3 &m1) { return !(m0 == m1); } + +/// @relates Mat3 +/// @brief Multiply each element of the given matrix by @a scalar and return the result. +template +Mat3::type> operator*(S scalar, const Mat3 &m) +{ return m*scalar; } + +/// @relates Mat3 +/// @brief Multiply each element of the given matrix by @a scalar and return the result. +template +Mat3::type> operator*(const Mat3 &m, S scalar) +{ + Mat3::type> result(m); + result *= scalar; + return result; +} + +/// @relates Mat3 +/// @brief Add corresponding elements of @a m0 and @a m1 and return the result. +template +Mat3::type> operator+(const Mat3 &m0, const Mat3 &m1) +{ + Mat3::type> result(m0); + result += m1; + return result; +} + +/// @relates Mat3 +/// @brief Subtract corresponding elements of @a m0 and @a m1 and return the result. +template +Mat3::type> operator-(const Mat3 &m0, const Mat3 &m1) +{ + Mat3::type> result(m0); + result -= m1; + return result; +} + + +/// @brief Multiply @a m0 by @a m1 and return the resulting matrix. +template +Mat3::type>operator*(const Mat3 &m0, const Mat3 &m1) +{ + Mat3::type> result(m0); + result *= m1; + return result; +} + +/// @relates Mat3 +/// @brief Multiply @a _m by @a _v and return the resulting vector. +template +inline Vec3::type> +operator*(const Mat3 &_m, const Vec3 &_v) +{ + MT const *m = _m.asPointer(); + return Vec3::type>( + _v[0]*m[0] + _v[1]*m[1] + _v[2]*m[2], + _v[0]*m[3] + _v[1]*m[4] + _v[2]*m[5], + _v[0]*m[6] + _v[1]*m[7] + _v[2]*m[8]); +} + +/// @relates Mat3 +/// @brief Multiply @a _v by @a _m and return the resulting vector. +template +inline Vec3::type> +operator*(const Vec3 &_v, const Mat3 &_m) +{ + MT const *m = _m.asPointer(); + return Vec3::type>( + _v[0]*m[0] + _v[1]*m[3] + _v[2]*m[6], + _v[0]*m[1] + _v[1]*m[4] + _v[2]*m[7], + _v[0]*m[2] + _v[1]*m[5] + _v[2]*m[8]); +} + +/// @relates Mat3 +/// @brief Multiply @a _v by @a _m and replace @a _v with the resulting vector. +template +inline Vec3 &operator *= (Vec3 &_v, const Mat3 &_m) +{ + Vec3 mult = _v * _m; + _v = mult; + return _v; +} + +/// Returns outer product of v1, v2, i.e. v1 v2^T if v1 and v2 are +/// column vectors, e.g. M = Mat3f::outerproduct(v1,v2); +template +Mat3 outerProduct(const Vec3& v1, const Vec3& v2) +{ + return Mat3(v1[0]*v2[0], v1[0]*v2[1], v1[0]*v2[2], + v1[1]*v2[0], v1[1]*v2[1], v1[1]*v2[2], + v1[2]*v2[0], v1[2]*v2[1], v1[2]*v2[2]); +}// outerProduct + + +/// Interpolate the rotation between m1 and m2 using Mat::powSolve. +/// Unlike slerp, translation is not treated independently. +/// This results in smoother animation results. +template +Mat3 powLerp(const Mat3 &m1, const Mat3 &m2, T t) +{ + Mat3 x = m1.inverse() * m2; + powSolve(x, x, t); + Mat3 m = m1 * x; + return m; +} + + +namespace mat3_internal { + +template +inline void +pivot(int i, int j, Mat3& S, Vec3& D, Mat3& Q) +{ + const int& n = Mat3::size; // should be 3 + T temp; + /// scratch variables used in pivoting + double cotan_of_2_theta; + double tan_of_theta; + double cosin_of_theta; + double sin_of_theta; + double z; + + double Sij = S(i,j); + + double Sjj_minus_Sii = D[j] - D[i]; + + if (fabs(Sjj_minus_Sii) * (10*math::Tolerance::value()) > fabs(Sij)) { + tan_of_theta = Sij / Sjj_minus_Sii; + } else { + /// pivot on Sij + cotan_of_2_theta = 0.5*Sjj_minus_Sii / Sij ; + + if (cotan_of_2_theta < 0.) { + tan_of_theta = + -1./(sqrt(1. + cotan_of_2_theta*cotan_of_2_theta) - cotan_of_2_theta); + } else { + tan_of_theta = + 1./(sqrt(1. + cotan_of_2_theta*cotan_of_2_theta) + cotan_of_2_theta); + } + } + + cosin_of_theta = 1./sqrt( 1. + tan_of_theta * tan_of_theta); + sin_of_theta = cosin_of_theta * tan_of_theta; + z = tan_of_theta * Sij; + S(i,j) = 0; + D[i] -= z; + D[j] += z; + for (int k = 0; k < i; ++k) { + temp = S(k,i); + S(k,i) = cosin_of_theta * temp - sin_of_theta * S(k,j); + S(k,j)= sin_of_theta * temp + cosin_of_theta * S(k,j); + } + for (int k = i+1; k < j; ++k) { + temp = S(i,k); + S(i,k) = cosin_of_theta * temp - sin_of_theta * S(k,j); + S(k,j) = sin_of_theta * temp + cosin_of_theta * S(k,j); + } + for (int k = j+1; k < n; ++k) { + temp = S(i,k); + S(i,k) = cosin_of_theta * temp - sin_of_theta * S(j,k); + S(j,k) = sin_of_theta * temp + cosin_of_theta * S(j,k); + } + for (int k = 0; k < n; ++k) + { + temp = Q(k,i); + Q(k,i) = cosin_of_theta * temp - sin_of_theta*Q(k,j); + Q(k,j) = sin_of_theta * temp + cosin_of_theta*Q(k,j); + } +} + +} // namespace mat3_internal + + +/// @brief Use Jacobi iterations to decompose a symmetric 3x3 matrix +/// (diagonalize and compute eigenvectors) +/// @details This is based on the "Efficient numerical diagonalization of Hermitian 3x3 matrices" +/// Joachim Kopp. arXiv.org preprint: physics/0610206 +/// with the addition of largest pivot +template +inline bool +diagonalizeSymmetricMatrix(const Mat3& input, Mat3& Q, Vec3& D, + unsigned int MAX_ITERATIONS=250) +{ + /// use Givens rotation matrix to eliminate off-diagonal entries. + /// initialize the rotation matrix as idenity + Q = Mat3::identity(); + int n = Mat3::size; // should be 3 + + /// temp matrix. Assumed to be symmetric + Mat3 S(input); + + for (int i = 0; i < n; ++i) { + D[i] = S(i,i); + } + + unsigned int iterations(0); + /// Just iterate over all the non-diagonal enteries + /// using the largest as a pivot. + do { + /// check for absolute convergence + /// are symmetric off diagonals all zero + double er = 0; + for (int i = 0; i < n; ++i) { + for (int j = i+1; j < n; ++j) { + er += fabs(S(i,j)); + } + } + if (std::abs(er) < math::Tolerance::value()) { + return true; + } + iterations++; + + T max_element = 0; + int ip = 0; + int jp = 0; + /// loop over all the off-diagonals above the diagonal + for (int i = 0; i < n; ++i) { + for (int j = i+1; j < n; ++j){ + + if ( fabs(D[i]) * (10*math::Tolerance::value()) > fabs(S(i,j))) { + /// value too small to pivot on + S(i,j) = 0; + } + if (fabs(S(i,j)) > max_element) { + max_element = fabs(S(i,j)); + ip = i; + jp = j; + } + } + } + mat3_internal::pivot(ip, jp, S, D, Q); + } while (iterations < MAX_ITERATIONS); + + return false; +} + + +using Mat3s = Mat3; +using Mat3d = Mat3; +using Mat3f = Mat3d; + +} // namespace math + + +template<> inline math::Mat3s zeroVal() { return math::Mat3s::zero(); } +template<> inline math::Mat3d zeroVal() { return math::Mat3d::zero(); } + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_MAT3_H_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Mat4.h b/openvdb/math/Mat4.h new file mode 100644 index 00000000..51317af2 --- /dev/null +++ b/openvdb/math/Mat4.h @@ -0,0 +1,1346 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_MAT4_H_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_MAT4_H_HAS_BEEN_INCLUDED + +#include +#include +#include "Math.h" +#include "Mat3.h" +#include "Vec3.h" +#include "Vec4.h" +#include // for std::copy(), std::swap() +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Vec4; + + +/// @class Mat4 Mat4.h +/// @brief 4x4 -matrix class. +template +class Mat4: public Mat<4, T> +{ +public: + /// Data type held by the matrix. + using value_type = T; + using ValueType = T; + using MyBase = Mat<4, T>; + + /// Trivial constructor, the matrix is NOT initialized + Mat4() {} + + /// Constructor given array of elements, the ordering is in row major form: + /** @verbatim + a[ 0] a[1] a[ 2] a[ 3] + a[ 4] a[5] a[ 6] a[ 7] + a[ 8] a[9] a[10] a[11] + a[12] a[13] a[14] a[15] + @endverbatim */ + template + Mat4(Source *a) + { + for (int i = 0; i < 16; i++) { + MyBase::mm[i] = static_cast(a[i]); + } + } + + /// Constructor given array of elements, the ordering is in row major form: + /** @verbatim + a b c d + e f g h + i j k l + m n o p + @endverbatim */ + template + Mat4(Source a, Source b, Source c, Source d, + Source e, Source f, Source g, Source h, + Source i, Source j, Source k, Source l, + Source m, Source n, Source o, Source p) + { + MyBase::mm[ 0] = static_cast(a); + MyBase::mm[ 1] = static_cast(b); + MyBase::mm[ 2] = static_cast(c); + MyBase::mm[ 3] = static_cast(d); + + MyBase::mm[ 4] = static_cast(e); + MyBase::mm[ 5] = static_cast(f); + MyBase::mm[ 6] = static_cast(g); + MyBase::mm[ 7] = static_cast(h); + + MyBase::mm[ 8] = static_cast(i); + MyBase::mm[ 9] = static_cast(j); + MyBase::mm[10] = static_cast(k); + MyBase::mm[11] = static_cast(l); + + MyBase::mm[12] = static_cast(m); + MyBase::mm[13] = static_cast(n); + MyBase::mm[14] = static_cast(o); + MyBase::mm[15] = static_cast(p); + } + + /// Construct matrix from rows or columns vectors (defaults to rows + /// for historical reasons) + template + Mat4(const Vec4 &v1, const Vec4 &v2, + const Vec4 &v3, const Vec4 &v4, bool rows = true) + { + if (rows) { + this->setRows(v1, v2, v3, v4); + } else { + this->setColumns(v1, v2, v3, v4); + } + } + + /// Copy constructor + Mat4(const Mat<4, T> &m) + { + for (int i = 0; i < 4; ++i) { + for (int j = 0; j < 4; ++j) { + MyBase::mm[i*4 + j] = m[i][j]; + } + } + } + + /// Conversion constructor + template + explicit Mat4(const Mat4 &m) + { + const Source *src = m.asPointer(); + + for (int i=0; i<16; ++i) { + MyBase::mm[i] = static_cast(src[i]); + } + } + + /// Predefined constant for identity matrix + static const Mat4& identity() { + static const Mat4 sIdentity = Mat4( + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1 + ); + return sIdentity; + } + + /// Predefined constant for zero matrix + static const Mat4& zero() { + static const Mat4 sZero = Mat4( + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0 + ); + return sZero; + } + + /// Set ith row to vector v + void setRow(int i, const Vec4 &v) + { + // assert(i>=0 && i<4); + int i4 = i * 4; + MyBase::mm[i4+0] = v[0]; + MyBase::mm[i4+1] = v[1]; + MyBase::mm[i4+2] = v[2]; + MyBase::mm[i4+3] = v[3]; + } + + /// Get ith row, e.g. Vec4f v = m.row(1); + Vec4 row(int i) const + { + // assert(i>=0 && i<3); + return Vec4((*this)(i,0), (*this)(i,1), (*this)(i,2), (*this)(i,3)); + } + + /// Set jth column to vector v + void setCol(int j, const Vec4& v) + { + // assert(j>=0 && j<4); + MyBase::mm[ 0+j] = v[0]; + MyBase::mm[ 4+j] = v[1]; + MyBase::mm[ 8+j] = v[2]; + MyBase::mm[12+j] = v[3]; + } + + /// Get jth column, e.g. Vec4f v = m.col(0); + Vec4 col(int j) const + { + // assert(j>=0 && j<4); + return Vec4((*this)(0,j), (*this)(1,j), (*this)(2,j), (*this)(3,j)); + } + + //@{ + /// Array style reference to ith row + /// e.g. m[1][3] = 4; + T* operator[](int i) { return &(MyBase::mm[i<<2]); } + const T* operator[](int i) const { return &(MyBase::mm[i<<2]); } + //@} + + /// Direct access to the internal data + T* asPointer() {return MyBase::mm;} + const T* asPointer() const {return MyBase::mm;} + + /// Alternative indexed reference to the elements + /// Note that the indices are row first and column second. + /// e.g. m(0,0) = 1; + T& operator()(int i, int j) + { + // assert(i>=0 && i<4); + // assert(j>=0 && j<4); + return MyBase::mm[4*i+j]; + } + + /// Alternative indexed constant reference to the elements, + /// Note that the indices are row first and column second. + /// e.g. float f = m(1,0); + T operator()(int i, int j) const + { + // assert(i>=0 && i<4); + // assert(j>=0 && j<4); + return MyBase::mm[4*i+j]; + } + + /// Set the rows of this matrix to the vectors v1, v2, v3, v4 + void setRows(const Vec4 &v1, const Vec4 &v2, + const Vec4 &v3, const Vec4 &v4) + { + MyBase::mm[ 0] = v1[0]; + MyBase::mm[ 1] = v1[1]; + MyBase::mm[ 2] = v1[2]; + MyBase::mm[ 3] = v1[3]; + + MyBase::mm[ 4] = v2[0]; + MyBase::mm[ 5] = v2[1]; + MyBase::mm[ 6] = v2[2]; + MyBase::mm[ 7] = v2[3]; + + MyBase::mm[ 8] = v3[0]; + MyBase::mm[ 9] = v3[1]; + MyBase::mm[10] = v3[2]; + MyBase::mm[11] = v3[3]; + + MyBase::mm[12] = v4[0]; + MyBase::mm[13] = v4[1]; + MyBase::mm[14] = v4[2]; + MyBase::mm[15] = v4[3]; + } + + /// Set the columns of this matrix to the vectors v1, v2, v3, v4 + void setColumns(const Vec4 &v1, const Vec4 &v2, + const Vec4 &v3, const Vec4 &v4) + { + MyBase::mm[ 0] = v1[0]; + MyBase::mm[ 1] = v2[0]; + MyBase::mm[ 2] = v3[0]; + MyBase::mm[ 3] = v4[0]; + + MyBase::mm[ 4] = v1[1]; + MyBase::mm[ 5] = v2[1]; + MyBase::mm[ 6] = v3[1]; + MyBase::mm[ 7] = v4[1]; + + MyBase::mm[ 8] = v1[2]; + MyBase::mm[ 9] = v2[2]; + MyBase::mm[10] = v3[2]; + MyBase::mm[11] = v4[2]; + + MyBase::mm[12] = v1[3]; + MyBase::mm[13] = v2[3]; + MyBase::mm[14] = v3[3]; + MyBase::mm[15] = v4[3]; + } + + // Set this matrix to zero + void setZero() + { + MyBase::mm[ 0] = 0; + MyBase::mm[ 1] = 0; + MyBase::mm[ 2] = 0; + MyBase::mm[ 3] = 0; + MyBase::mm[ 4] = 0; + MyBase::mm[ 5] = 0; + MyBase::mm[ 6] = 0; + MyBase::mm[ 7] = 0; + MyBase::mm[ 8] = 0; + MyBase::mm[ 9] = 0; + MyBase::mm[10] = 0; + MyBase::mm[11] = 0; + MyBase::mm[12] = 0; + MyBase::mm[13] = 0; + MyBase::mm[14] = 0; + MyBase::mm[15] = 0; + } + + /// Set this matrix to identity + void setIdentity() + { + MyBase::mm[ 0] = 1; + MyBase::mm[ 1] = 0; + MyBase::mm[ 2] = 0; + MyBase::mm[ 3] = 0; + + MyBase::mm[ 4] = 0; + MyBase::mm[ 5] = 1; + MyBase::mm[ 6] = 0; + MyBase::mm[ 7] = 0; + + MyBase::mm[ 8] = 0; + MyBase::mm[ 9] = 0; + MyBase::mm[10] = 1; + MyBase::mm[11] = 0; + + MyBase::mm[12] = 0; + MyBase::mm[13] = 0; + MyBase::mm[14] = 0; + MyBase::mm[15] = 1; + } + + + /// Set upper left to a Mat3 + void setMat3(const Mat3 &m) + { + for (int i = 0; i < 3; i++) + for (int j=0; j < 3; j++) + MyBase::mm[i*4+j] = m[i][j]; + } + + Mat3 getMat3() const + { + Mat3 m; + + for (int i = 0; i < 3; i++) + for (int j = 0; j < 3; j++) + m[i][j] = MyBase::mm[i*4+j]; + + return m; + } + + /// Return the translation component + Vec3 getTranslation() const + { + return Vec3(MyBase::mm[12], MyBase::mm[13], MyBase::mm[14]); + } + + void setTranslation(const Vec3 &t) + { + MyBase::mm[12] = t[0]; + MyBase::mm[13] = t[1]; + MyBase::mm[14] = t[2]; + } + + /// Assignment operator + template + const Mat4& operator=(const Mat4 &m) + { + const Source *src = m.asPointer(); + + // don't suppress warnings when assigning from different numerical types + std::copy(src, (src + this->numElements()), MyBase::mm); + return *this; + } + + /// Return @c true if this matrix is equivalent to @a m within a tolerance of @a eps. + bool eq(const Mat4 &m, T eps=1.0e-8) const + { + for (int i = 0; i < 16; i++) { + if (!isApproxEqual(MyBase::mm[i], m.mm[i], eps)) + return false; + } + return true; + } + + /// Negation operator, for e.g. m1 = -m2; + Mat4 operator-() const + { + return Mat4( + -MyBase::mm[ 0], -MyBase::mm[ 1], -MyBase::mm[ 2], -MyBase::mm[ 3], + -MyBase::mm[ 4], -MyBase::mm[ 5], -MyBase::mm[ 6], -MyBase::mm[ 7], + -MyBase::mm[ 8], -MyBase::mm[ 9], -MyBase::mm[10], -MyBase::mm[11], + -MyBase::mm[12], -MyBase::mm[13], -MyBase::mm[14], -MyBase::mm[15] + ); + } // trivial + + /// Multiply each element of this matrix by @a scalar. + template + const Mat4& operator*=(S scalar) + { + MyBase::mm[ 0] *= scalar; + MyBase::mm[ 1] *= scalar; + MyBase::mm[ 2] *= scalar; + MyBase::mm[ 3] *= scalar; + + MyBase::mm[ 4] *= scalar; + MyBase::mm[ 5] *= scalar; + MyBase::mm[ 6] *= scalar; + MyBase::mm[ 7] *= scalar; + + MyBase::mm[ 8] *= scalar; + MyBase::mm[ 9] *= scalar; + MyBase::mm[10] *= scalar; + MyBase::mm[11] *= scalar; + + MyBase::mm[12] *= scalar; + MyBase::mm[13] *= scalar; + MyBase::mm[14] *= scalar; + MyBase::mm[15] *= scalar; + return *this; + } + + /// Add each element of the given matrix to the corresponding element of this matrix. + template + const Mat4 &operator+=(const Mat4 &m1) + { + const S* s = m1.asPointer(); + + MyBase::mm[ 0] += s[ 0]; + MyBase::mm[ 1] += s[ 1]; + MyBase::mm[ 2] += s[ 2]; + MyBase::mm[ 3] += s[ 3]; + + MyBase::mm[ 4] += s[ 4]; + MyBase::mm[ 5] += s[ 5]; + MyBase::mm[ 6] += s[ 6]; + MyBase::mm[ 7] += s[ 7]; + + MyBase::mm[ 8] += s[ 8]; + MyBase::mm[ 9] += s[ 9]; + MyBase::mm[10] += s[10]; + MyBase::mm[11] += s[11]; + + MyBase::mm[12] += s[12]; + MyBase::mm[13] += s[13]; + MyBase::mm[14] += s[14]; + MyBase::mm[15] += s[15]; + + return *this; + } + + /// Subtract each element of the given matrix from the corresponding element of this matrix. + template + const Mat4 &operator-=(const Mat4 &m1) + { + const S* s = m1.asPointer(); + + MyBase::mm[ 0] -= s[ 0]; + MyBase::mm[ 1] -= s[ 1]; + MyBase::mm[ 2] -= s[ 2]; + MyBase::mm[ 3] -= s[ 3]; + + MyBase::mm[ 4] -= s[ 4]; + MyBase::mm[ 5] -= s[ 5]; + MyBase::mm[ 6] -= s[ 6]; + MyBase::mm[ 7] -= s[ 7]; + + MyBase::mm[ 8] -= s[ 8]; + MyBase::mm[ 9] -= s[ 9]; + MyBase::mm[10] -= s[10]; + MyBase::mm[11] -= s[11]; + + MyBase::mm[12] -= s[12]; + MyBase::mm[13] -= s[13]; + MyBase::mm[14] -= s[14]; + MyBase::mm[15] -= s[15]; + + return *this; + } + + /// Multiply this matrix by the given matrix. + template + const Mat4 &operator*=(const Mat4 &m1) + { + Mat4 m0(*this); + + const T* s0 = m0.asPointer(); + const S* s1 = m1.asPointer(); + + for (int i = 0; i < 4; i++) { + int i4 = 4 * i; + MyBase::mm[i4+0] = static_cast(s0[i4+0] * s1[ 0] + + s0[i4+1] * s1[ 4] + + s0[i4+2] * s1[ 8] + + s0[i4+3] * s1[12]); + + MyBase::mm[i4+1] = static_cast(s0[i4+0] * s1[ 1] + + s0[i4+1] * s1[ 5] + + s0[i4+2] * s1[ 9] + + s0[i4+3] * s1[13]); + + MyBase::mm[i4+2] = static_cast(s0[i4+0] * s1[ 2] + + s0[i4+1] * s1[ 6] + + s0[i4+2] * s1[10] + + s0[i4+3] * s1[14]); + + MyBase::mm[i4+3] = static_cast(s0[i4+0] * s1[ 3] + + s0[i4+1] * s1[ 7] + + s0[i4+2] * s1[11] + + s0[i4+3] * s1[15]); + } + return *this; + } + + /// @return transpose of this + Mat4 transpose() const + { + return Mat4( + MyBase::mm[ 0], MyBase::mm[ 4], MyBase::mm[ 8], MyBase::mm[12], + MyBase::mm[ 1], MyBase::mm[ 5], MyBase::mm[ 9], MyBase::mm[13], + MyBase::mm[ 2], MyBase::mm[ 6], MyBase::mm[10], MyBase::mm[14], + MyBase::mm[ 3], MyBase::mm[ 7], MyBase::mm[11], MyBase::mm[15] + ); + } + + + /// @return inverse of this + /// @throw ArithmeticError if singular + Mat4 inverse(T tolerance = 0) const + { + // + // inv [ A | b ] = [ E | f ] A: 3x3, b: 3x1, c': 1x3 d: 1x1 + // [ c' | d ] [ g' | h ] + // + // If A is invertible use + // + // E = A^-1 + p*h*r + // p = A^-1 * b + // f = -p * h + // g' = -h * c' + // h = 1 / (d - c'*p) + // r' = c'*A^-1 + // + // Otherwise use gauss-jordan elimination + // + + // + // We create this alias to ourself so we can easily use own subscript + // operator. + const Mat4& m(*this); + + T m0011 = m[0][0] * m[1][1]; + T m0012 = m[0][0] * m[1][2]; + T m0110 = m[0][1] * m[1][0]; + T m0210 = m[0][2] * m[1][0]; + T m0120 = m[0][1] * m[2][0]; + T m0220 = m[0][2] * m[2][0]; + + T detA = m0011 * m[2][2] - m0012 * m[2][1] - m0110 * m[2][2] + + m0210 * m[2][1] + m0120 * m[1][2] - m0220 * m[1][1]; + + bool hasPerspective = + (!isExactlyEqual(m[0][3], T(0.0)) || + !isExactlyEqual(m[1][3], T(0.0)) || + !isExactlyEqual(m[2][3], T(0.0)) || + !isExactlyEqual(m[3][3], T(1.0))); + + T det; + if (hasPerspective) { + det = m[0][3] * det3(m, 1,2,3, 0,2,1) + + m[1][3] * det3(m, 2,0,3, 0,2,1) + + m[2][3] * det3(m, 3,0,1, 0,2,1) + + m[3][3] * detA; + } else { + det = detA * m[3][3]; + } + + Mat4 inv; + bool invertible; + + if (isApproxEqual(det,T(0.0),tolerance)) { + invertible = false; + + } else if (isApproxEqual(detA,T(0.0),T(1e-8))) { + // det is too small to rely on inversion by subblocks + invertible = m.invert(inv, tolerance); + + } else { + invertible = true; + detA = 1.0 / detA; + + // + // Calculate A^-1 + // + inv[0][0] = detA * ( m[1][1] * m[2][2] - m[1][2] * m[2][1]); + inv[0][1] = detA * (-m[0][1] * m[2][2] + m[0][2] * m[2][1]); + inv[0][2] = detA * ( m[0][1] * m[1][2] - m[0][2] * m[1][1]); + + inv[1][0] = detA * (-m[1][0] * m[2][2] + m[1][2] * m[2][0]); + inv[1][1] = detA * ( m[0][0] * m[2][2] - m0220); + inv[1][2] = detA * ( m0210 - m0012); + + inv[2][0] = detA * ( m[1][0] * m[2][1] - m[1][1] * m[2][0]); + inv[2][1] = detA * ( m0120 - m[0][0] * m[2][1]); + inv[2][2] = detA * ( m0011 - m0110); + + if (hasPerspective) { + // + // Calculate r, p, and h + // + Vec3 r; + r[0] = m[3][0] * inv[0][0] + m[3][1] * inv[1][0] + + m[3][2] * inv[2][0]; + r[1] = m[3][0] * inv[0][1] + m[3][1] * inv[1][1] + + m[3][2] * inv[2][1]; + r[2] = m[3][0] * inv[0][2] + m[3][1] * inv[1][2] + + m[3][2] * inv[2][2]; + + Vec3 p; + p[0] = inv[0][0] * m[0][3] + inv[0][1] * m[1][3] + + inv[0][2] * m[2][3]; + p[1] = inv[1][0] * m[0][3] + inv[1][1] * m[1][3] + + inv[1][2] * m[2][3]; + p[2] = inv[2][0] * m[0][3] + inv[2][1] * m[1][3] + + inv[2][2] * m[2][3]; + + T h = m[3][3] - p.dot(Vec3(m[3][0],m[3][1],m[3][2])); + if (isApproxEqual(h,T(0.0),tolerance)) { + invertible = false; + + } else { + h = 1.0 / h; + + // + // Calculate h, g, and f + // + inv[3][3] = h; + inv[3][0] = -h * r[0]; + inv[3][1] = -h * r[1]; + inv[3][2] = -h * r[2]; + + inv[0][3] = -h * p[0]; + inv[1][3] = -h * p[1]; + inv[2][3] = -h * p[2]; + + // + // Calculate E + // + p *= h; + inv[0][0] += p[0] * r[0]; + inv[0][1] += p[0] * r[1]; + inv[0][2] += p[0] * r[2]; + inv[1][0] += p[1] * r[0]; + inv[1][1] += p[1] * r[1]; + inv[1][2] += p[1] * r[2]; + inv[2][0] += p[2] * r[0]; + inv[2][1] += p[2] * r[1]; + inv[2][2] += p[2] * r[2]; + } + } else { + // Equations are much simpler in the non-perspective case + inv[3][0] = - (m[3][0] * inv[0][0] + m[3][1] * inv[1][0] + + m[3][2] * inv[2][0]); + inv[3][1] = - (m[3][0] * inv[0][1] + m[3][1] * inv[1][1] + + m[3][2] * inv[2][1]); + inv[3][2] = - (m[3][0] * inv[0][2] + m[3][1] * inv[1][2] + + m[3][2] * inv[2][2]); + inv[0][3] = 0.0; + inv[1][3] = 0.0; + inv[2][3] = 0.0; + inv[3][3] = 1.0; + } + } + + if (!invertible) OPENVDB_THROW(ArithmeticError, "Inversion of singular 4x4 matrix"); + return inv; + } + + + /// Determinant of matrix + T det() const + { + const T *ap; + Mat3 submat; + T det; + T *sp; + int i, j, k, sign; + + det = 0; + sign = 1; + for (i = 0; i < 4; i++) { + ap = &MyBase::mm[ 0]; + sp = submat.asPointer(); + for (j = 0; j < 4; j++) { + for (k = 0; k < 4; k++) { + if ((k != i) && (j != 0)) { + *sp++ = *ap; + } + ap++; + } + } + + det += sign * MyBase::mm[i] * submat.det(); + sign = -sign; + } + + return det; + } + + /// Sets the matrix to a matrix that translates by v + static Mat4 translation(const Vec3d& v) + { + return Mat4( + T(1), T(0), T(0), T(0), + T(0), T(1), T(0), T(0), + T(0), T(0), T(1), T(0), + T(v.x()), T(v.y()),T(v.z()), T(1)); + } + + /// Sets the matrix to a matrix that translates by v + template + void setToTranslation(const Vec3& v) + { + MyBase::mm[ 0] = 1; + MyBase::mm[ 1] = 0; + MyBase::mm[ 2] = 0; + MyBase::mm[ 3] = 0; + + MyBase::mm[ 4] = 0; + MyBase::mm[ 5] = 1; + MyBase::mm[ 6] = 0; + MyBase::mm[ 7] = 0; + + MyBase::mm[ 8] = 0; + MyBase::mm[ 9] = 0; + MyBase::mm[10] = 1; + MyBase::mm[11] = 0; + + MyBase::mm[12] = v.x(); + MyBase::mm[13] = v.y(); + MyBase::mm[14] = v.z(); + MyBase::mm[15] = 1; + } + + /// Left multiples by the specified translation, i.e. Trans * (*this) + template + void preTranslate(const Vec3& tr) + { + Vec3 tmp(tr.x(), tr.y(), tr.z()); + Mat4 Tr = Mat4::translation(tmp); + + *this = Tr * (*this); + + } + + /// Right multiplies by the specified translation matrix, i.e. (*this) * Trans + template + void postTranslate(const Vec3& tr) + { + Vec3 tmp(tr.x(), tr.y(), tr.z()); + Mat4 Tr = Mat4::translation(tmp); + + *this = (*this) * Tr; + + } + + + /// Sets the matrix to a matrix that scales by v + template + void setToScale(const Vec3& v) + { + this->setIdentity(); + MyBase::mm[ 0] = v.x(); + MyBase::mm[ 5] = v.y(); + MyBase::mm[10] = v.z(); + } + + // Left multiples by the specified scale matrix, i.e. Sc * (*this) + template + void preScale(const Vec3& v) + { + MyBase::mm[ 0] *= v.x(); + MyBase::mm[ 1] *= v.x(); + MyBase::mm[ 2] *= v.x(); + MyBase::mm[ 3] *= v.x(); + + MyBase::mm[ 4] *= v.y(); + MyBase::mm[ 5] *= v.y(); + MyBase::mm[ 6] *= v.y(); + MyBase::mm[ 7] *= v.y(); + + MyBase::mm[ 8] *= v.z(); + MyBase::mm[ 9] *= v.z(); + MyBase::mm[10] *= v.z(); + MyBase::mm[11] *= v.z(); + } + + + + // Right multiples by the specified scale matrix, i.e. (*this) * Sc + template + void postScale(const Vec3& v) + { + + MyBase::mm[ 0] *= v.x(); + MyBase::mm[ 1] *= v.y(); + MyBase::mm[ 2] *= v.z(); + + MyBase::mm[ 4] *= v.x(); + MyBase::mm[ 5] *= v.y(); + MyBase::mm[ 6] *= v.z(); + + MyBase::mm[ 8] *= v.x(); + MyBase::mm[ 9] *= v.y(); + MyBase::mm[10] *= v.z(); + + MyBase::mm[12] *= v.x(); + MyBase::mm[13] *= v.y(); + MyBase::mm[14] *= v.z(); + + } + + + /// @brief Sets the matrix to a rotation about the given axis. + /// @param axis The axis (one of X, Y, Z) to rotate about. + /// @param angle The rotation angle, in radians. + void setToRotation(Axis axis, T angle) {*this = rotation >(axis, angle);} + + /// @brief Sets the matrix to a rotation about an arbitrary axis + /// @param axis The axis of rotation (cannot be zero-length) + /// @param angle The rotation angle, in radians. + void setToRotation(const Vec3& axis, T angle) {*this = rotation >(axis, angle);} + + /// @brief Sets the matrix to a rotation that maps v1 onto v2 about the cross + /// product of v1 and v2. + void setToRotation(const Vec3& v1, const Vec3& v2) {*this = rotation >(v1, v2);} + + + /// @brief Left multiplies by a rotation clock-wiseabout the given axis into this matrix. + /// @param axis The axis (one of X, Y, Z) of rotation. + /// @param angle The clock-wise rotation angle, in radians. + void preRotate(Axis axis, T angle) + { + T c = static_cast(cos(angle)); + T s = -static_cast(sin(angle)); // the "-" makes it clockwise + + switch (axis) { + case X_AXIS: + { + T a4, a5, a6, a7; + + a4 = c * MyBase::mm[ 4] - s * MyBase::mm[ 8]; + a5 = c * MyBase::mm[ 5] - s * MyBase::mm[ 9]; + a6 = c * MyBase::mm[ 6] - s * MyBase::mm[10]; + a7 = c * MyBase::mm[ 7] - s * MyBase::mm[11]; + + + MyBase::mm[ 8] = s * MyBase::mm[ 4] + c * MyBase::mm[ 8]; + MyBase::mm[ 9] = s * MyBase::mm[ 5] + c * MyBase::mm[ 9]; + MyBase::mm[10] = s * MyBase::mm[ 6] + c * MyBase::mm[10]; + MyBase::mm[11] = s * MyBase::mm[ 7] + c * MyBase::mm[11]; + + MyBase::mm[ 4] = a4; + MyBase::mm[ 5] = a5; + MyBase::mm[ 6] = a6; + MyBase::mm[ 7] = a7; + } + break; + + case Y_AXIS: + { + T a0, a1, a2, a3; + + a0 = c * MyBase::mm[ 0] + s * MyBase::mm[ 8]; + a1 = c * MyBase::mm[ 1] + s * MyBase::mm[ 9]; + a2 = c * MyBase::mm[ 2] + s * MyBase::mm[10]; + a3 = c * MyBase::mm[ 3] + s * MyBase::mm[11]; + + MyBase::mm[ 8] = -s * MyBase::mm[ 0] + c * MyBase::mm[ 8]; + MyBase::mm[ 9] = -s * MyBase::mm[ 1] + c * MyBase::mm[ 9]; + MyBase::mm[10] = -s * MyBase::mm[ 2] + c * MyBase::mm[10]; + MyBase::mm[11] = -s * MyBase::mm[ 3] + c * MyBase::mm[11]; + + + MyBase::mm[ 0] = a0; + MyBase::mm[ 1] = a1; + MyBase::mm[ 2] = a2; + MyBase::mm[ 3] = a3; + } + break; + + case Z_AXIS: + { + T a0, a1, a2, a3; + + a0 = c * MyBase::mm[ 0] - s * MyBase::mm[ 4]; + a1 = c * MyBase::mm[ 1] - s * MyBase::mm[ 5]; + a2 = c * MyBase::mm[ 2] - s * MyBase::mm[ 6]; + a3 = c * MyBase::mm[ 3] - s * MyBase::mm[ 7]; + + MyBase::mm[ 4] = s * MyBase::mm[ 0] + c * MyBase::mm[ 4]; + MyBase::mm[ 5] = s * MyBase::mm[ 1] + c * MyBase::mm[ 5]; + MyBase::mm[ 6] = s * MyBase::mm[ 2] + c * MyBase::mm[ 6]; + MyBase::mm[ 7] = s * MyBase::mm[ 3] + c * MyBase::mm[ 7]; + + MyBase::mm[ 0] = a0; + MyBase::mm[ 1] = a1; + MyBase::mm[ 2] = a2; + MyBase::mm[ 3] = a3; + } + break; + + default: + assert(axis==X_AXIS || axis==Y_AXIS || axis==Z_AXIS); + } + } + + + /// @brief Right multiplies by a rotation clock-wiseabout the given axis into this matrix. + /// @param axis The axis (one of X, Y, Z) of rotation. + /// @param angle The clock-wise rotation angle, in radians. + void postRotate(Axis axis, T angle) + { + T c = static_cast(cos(angle)); + T s = -static_cast(sin(angle)); // the "-" makes it clockwise + + + + switch (axis) { + case X_AXIS: + { + T a2, a6, a10, a14; + + a2 = c * MyBase::mm[ 2] - s * MyBase::mm[ 1]; + a6 = c * MyBase::mm[ 6] - s * MyBase::mm[ 5]; + a10 = c * MyBase::mm[10] - s * MyBase::mm[ 9]; + a14 = c * MyBase::mm[14] - s * MyBase::mm[13]; + + + MyBase::mm[ 1] = c * MyBase::mm[ 1] + s * MyBase::mm[ 2]; + MyBase::mm[ 5] = c * MyBase::mm[ 5] + s * MyBase::mm[ 6]; + MyBase::mm[ 9] = c * MyBase::mm[ 9] + s * MyBase::mm[10]; + MyBase::mm[13] = c * MyBase::mm[13] + s * MyBase::mm[14]; + + MyBase::mm[ 2] = a2; + MyBase::mm[ 6] = a6; + MyBase::mm[10] = a10; + MyBase::mm[14] = a14; + } + break; + + case Y_AXIS: + { + T a2, a6, a10, a14; + + a2 = c * MyBase::mm[ 2] + s * MyBase::mm[ 0]; + a6 = c * MyBase::mm[ 6] + s * MyBase::mm[ 4]; + a10 = c * MyBase::mm[10] + s * MyBase::mm[ 8]; + a14 = c * MyBase::mm[14] + s * MyBase::mm[12]; + + MyBase::mm[ 0] = c * MyBase::mm[ 0] - s * MyBase::mm[ 2]; + MyBase::mm[ 4] = c * MyBase::mm[ 4] - s * MyBase::mm[ 6]; + MyBase::mm[ 8] = c * MyBase::mm[ 8] - s * MyBase::mm[10]; + MyBase::mm[12] = c * MyBase::mm[12] - s * MyBase::mm[14]; + + MyBase::mm[ 2] = a2; + MyBase::mm[ 6] = a6; + MyBase::mm[10] = a10; + MyBase::mm[14] = a14; + } + break; + + case Z_AXIS: + { + T a1, a5, a9, a13; + + a1 = c * MyBase::mm[ 1] - s * MyBase::mm[ 0]; + a5 = c * MyBase::mm[ 5] - s * MyBase::mm[ 4]; + a9 = c * MyBase::mm[ 9] - s * MyBase::mm[ 8]; + a13 = c * MyBase::mm[13] - s * MyBase::mm[12]; + + MyBase::mm[ 0] = c * MyBase::mm[ 0] + s * MyBase::mm[ 1]; + MyBase::mm[ 4] = c * MyBase::mm[ 4] + s * MyBase::mm[ 5]; + MyBase::mm[ 8] = c * MyBase::mm[ 8] + s * MyBase::mm[ 9]; + MyBase::mm[12] = c * MyBase::mm[12] + s * MyBase::mm[13]; + + MyBase::mm[ 1] = a1; + MyBase::mm[ 5] = a5; + MyBase::mm[ 9] = a9; + MyBase::mm[13] = a13; + + } + break; + + default: + assert(axis==X_AXIS || axis==Y_AXIS || axis==Z_AXIS); + } + } + + /// @brief Sets the matrix to a shear along axis0 by a fraction of axis1. + /// @param axis0 The fixed axis of the shear. + /// @param axis1 The shear axis. + /// @param shearby The shear factor. + void setToShear(Axis axis0, Axis axis1, T shearby) + { + *this = shear >(axis0, axis1, shearby); + } + + + /// @brief Left multiplies a shearing transformation into the matrix. + /// @see setToShear + void preShear(Axis axis0, Axis axis1, T shear) + { + int index0 = static_cast(axis0); + int index1 = static_cast(axis1); + + // to row "index1" add a multiple of the index0 row + MyBase::mm[index1 * 4 + 0] += shear * MyBase::mm[index0 * 4 + 0]; + MyBase::mm[index1 * 4 + 1] += shear * MyBase::mm[index0 * 4 + 1]; + MyBase::mm[index1 * 4 + 2] += shear * MyBase::mm[index0 * 4 + 2]; + MyBase::mm[index1 * 4 + 3] += shear * MyBase::mm[index0 * 4 + 3]; + } + + + /// @brief Right multiplies a shearing transformation into the matrix. + /// @see setToShear + void postShear(Axis axis0, Axis axis1, T shear) + { + int index0 = static_cast(axis0); + int index1 = static_cast(axis1); + + // to collumn "index0" add a multiple of the index1 row + MyBase::mm[index0 + 0] += shear * MyBase::mm[index1 + 0]; + MyBase::mm[index0 + 4] += shear * MyBase::mm[index1 + 4]; + MyBase::mm[index0 + 8] += shear * MyBase::mm[index1 + 8]; + MyBase::mm[index0 + 12] += shear * MyBase::mm[index1 + 12]; + + } + + /// Transform a Vec4 by post-multiplication. + template + Vec4 transform(const Vec4 &v) const + { + return static_cast< Vec4 >(v * *this); + } + + /// Transform a Vec3 by post-multiplication, without homogenous division. + template + Vec3 transform(const Vec3 &v) const + { + return static_cast< Vec3 >(v * *this); + } + + /// Transform a Vec4 by pre-multiplication. + template + Vec4 pretransform(const Vec4 &v) const + { + return static_cast< Vec4 >(*this * v); + } + + /// Transform a Vec3 by pre-multiplication, without homogenous division. + template + Vec3 pretransform(const Vec3 &v) const + { + return static_cast< Vec3 >(*this * v); + } + + /// Transform a Vec3 by post-multiplication, doing homogenous divison. + template + Vec3 transformH(const Vec3 &p) const + { + T0 w; + + // w = p * (*this).col(3); + w = static_cast(p[0] * MyBase::mm[ 3] + p[1] * MyBase::mm[ 7] + + p[2] * MyBase::mm[11] + MyBase::mm[15]); + + if ( !isExactlyEqual(w , 0.0) ) { + return Vec3(static_cast((p[0] * MyBase::mm[ 0] + p[1] * MyBase::mm[ 4] + + p[2] * MyBase::mm[ 8] + MyBase::mm[12]) / w), + static_cast((p[0] * MyBase::mm[ 1] + p[1] * MyBase::mm[ 5] + + p[2] * MyBase::mm[ 9] + MyBase::mm[13]) / w), + static_cast((p[0] * MyBase::mm[ 2] + p[1] * MyBase::mm[ 6] + + p[2] * MyBase::mm[10] + MyBase::mm[14]) / w)); + } + + return Vec3(0, 0, 0); + } + + /// Transform a Vec3 by pre-multiplication, doing homogenous division. + template + Vec3 pretransformH(const Vec3 &p) const + { + T0 w; + + // w = p * (*this).col(3); + w = p[0] * MyBase::mm[12] + p[1] * MyBase::mm[13] + p[2] * MyBase::mm[14] + MyBase::mm[15]; + + if ( !isExactlyEqual(w , 0.0) ) { + return Vec3(static_cast((p[0] * MyBase::mm[ 0] + p[1] * MyBase::mm[ 1] + + p[2] * MyBase::mm[ 2] + MyBase::mm[ 3]) / w), + static_cast((p[0] * MyBase::mm[ 4] + p[1] * MyBase::mm[ 5] + + p[2] * MyBase::mm[ 6] + MyBase::mm[ 7]) / w), + static_cast((p[0] * MyBase::mm[ 8] + p[1] * MyBase::mm[ 9] + + p[2] * MyBase::mm[10] + MyBase::mm[11]) / w)); + } + + return Vec3(0, 0, 0); + } + + /// Transform a Vec3 by post-multiplication, without translation. + template + Vec3 transform3x3(const Vec3 &v) const + { + return Vec3( + static_cast(v[0] * MyBase::mm[ 0] + v[1] * MyBase::mm[ 4] + v[2] * MyBase::mm[ 8]), + static_cast(v[0] * MyBase::mm[ 1] + v[1] * MyBase::mm[ 5] + v[2] * MyBase::mm[ 9]), + static_cast(v[0] * MyBase::mm[ 2] + v[1] * MyBase::mm[ 6] + v[2] * MyBase::mm[10])); + } + + +private: + bool invert(Mat4 &inverse, T tolerance) const; + + T det2(const Mat4 &a, int i0, int i1, int j0, int j1) const { + int i0row = i0 * 4; + int i1row = i1 * 4; + return a.mm[i0row+j0]*a.mm[i1row+j1] - a.mm[i0row+j1]*a.mm[i1row+j0]; + } + + T det3(const Mat4 &a, int i0, int i1, int i2, + int j0, int j1, int j2) const { + int i0row = i0 * 4; + return a.mm[i0row+j0]*det2(a, i1,i2, j1,j2) + + a.mm[i0row+j1]*det2(a, i1,i2, j2,j0) + + a.mm[i0row+j2]*det2(a, i1,i2, j0,j1); + } +}; // class Mat4 + + +/// @relates Mat4 +/// @brief Equality operator, does exact floating point comparisons +template +bool operator==(const Mat4 &m0, const Mat4 &m1) +{ + const T0 *t0 = m0.asPointer(); + const T1 *t1 = m1.asPointer(); + + for (int i=0; i<16; ++i) if (!isExactlyEqual(t0[i], t1[i])) return false; + return true; +} + +/// @relates Mat4 +/// @brief Inequality operator, does exact floating point comparisons +template +bool operator!=(const Mat4 &m0, const Mat4 &m1) { return !(m0 == m1); } + +/// @relates Mat4 +/// @brief Multiply each element of the given matrix by @a scalar and return the result. +template +Mat4::type> operator*(S scalar, const Mat4 &m) +{ + return m*scalar; +} + +/// @relates Mat4 +/// @brief Multiply each element of the given matrix by @a scalar and return the result. +template +Mat4::type> operator*(const Mat4 &m, S scalar) +{ + Mat4::type> result(m); + result *= scalar; + return result; +} + +/// @relates Mat4 +/// @brief Multiply @a _m by @a _v and return the resulting vector. +template +inline Vec4::type> +operator*(const Mat4 &_m, + const Vec4 &_v) +{ + MT const *m = _m.asPointer(); + return Vec4::type>( + _v[0]*m[0] + _v[1]*m[1] + _v[2]*m[2] + _v[3]*m[3], + _v[0]*m[4] + _v[1]*m[5] + _v[2]*m[6] + _v[3]*m[7], + _v[0]*m[8] + _v[1]*m[9] + _v[2]*m[10] + _v[3]*m[11], + _v[0]*m[12] + _v[1]*m[13] + _v[2]*m[14] + _v[3]*m[15]); +} + +/// @relates Mat4 +/// @brief Multiply @a _v by @a _m and return the resulting vector. +template +inline Vec4::type> +operator*(const Vec4 &_v, + const Mat4 &_m) +{ + MT const *m = _m.asPointer(); + return Vec4::type>( + _v[0]*m[0] + _v[1]*m[4] + _v[2]*m[8] + _v[3]*m[12], + _v[0]*m[1] + _v[1]*m[5] + _v[2]*m[9] + _v[3]*m[13], + _v[0]*m[2] + _v[1]*m[6] + _v[2]*m[10] + _v[3]*m[14], + _v[0]*m[3] + _v[1]*m[7] + _v[2]*m[11] + _v[3]*m[15]); +} + +/// @relates Mat4 +/// @brief Multiply @a _m by @a _v and return the resulting vector. +template +inline Vec3::type> +operator*(const Mat4 &_m, const Vec3 &_v) +{ + MT const *m = _m.asPointer(); + return Vec3::type>( + _v[0]*m[0] + _v[1]*m[1] + _v[2]*m[2] + m[3], + _v[0]*m[4] + _v[1]*m[5] + _v[2]*m[6] + m[7], + _v[0]*m[8] + _v[1]*m[9] + _v[2]*m[10] + m[11]); +} + +/// @relates Mat4 +/// @brief Multiply @a _v by @a _m and return the resulting vector. +template +inline Vec3::type> +operator*(const Vec3 &_v, const Mat4 &_m) +{ + MT const *m = _m.asPointer(); + return Vec3::type>( + _v[0]*m[0] + _v[1]*m[4] + _v[2]*m[8] + m[12], + _v[0]*m[1] + _v[1]*m[5] + _v[2]*m[9] + m[13], + _v[0]*m[2] + _v[1]*m[6] + _v[2]*m[10] + m[14]); +} + +/// @relates Mat4 +/// @brief Add corresponding elements of @a m0 and @a m1 and return the result. +template +Mat4::type> +operator+(const Mat4 &m0, const Mat4 &m1) +{ + Mat4::type> result(m0); + result += m1; + return result; +} + +/// @relates Mat4 +/// @brief Subtract corresponding elements of @a m0 and @a m1 and return the result. +template +Mat4::type> +operator-(const Mat4 &m0, const Mat4 &m1) +{ + Mat4::type> result(m0); + result -= m1; + return result; +} + +/// @relates Mat4 +/// @brief Multiply @a m0 by @a m1 and return the resulting matrix. +template +Mat4::type> +operator*(const Mat4 &m0, const Mat4 &m1) +{ + Mat4::type> result(m0); + result *= m1; + return result; +} + + +/// Transform a Vec3 by pre-multiplication, without translation. +/// Presumes this matrix is inverse of coordinate transform +/// Synonymous to "pretransform3x3" +template +Vec3 transformNormal(const Mat4 &m, const Vec3 &n) +{ + return Vec3( + static_cast(m[0][0]*n[0] + m[0][1]*n[1] + m[0][2]*n[2]), + static_cast(m[1][0]*n[0] + m[1][1]*n[1] + m[1][2]*n[2]), + static_cast(m[2][0]*n[0] + m[2][1]*n[1] + m[2][2]*n[2])); +} + + +/// Invert via gauss-jordan elimination. Modified from dreamworks internal mx library +template +bool Mat4::invert(Mat4 &inverse, T tolerance) const +{ + Mat4 temp(*this); + inverse.setIdentity(); + + // Forward elimination step + double det = 1.0; + for (int i = 0; i < 4; ++i) { + int row = i; + double max = fabs(temp[i][i]); + + for (int k = i+1; k < 4; ++k) { + if (fabs(temp[k][i]) > max) { + row = k; + max = fabs(temp[k][i]); + } + } + + if (isExactlyEqual(max, 0.0)) return false; + + // must move pivot to row i + if (row != i) { + det = -det; + for (int k = 0; k < 4; ++k) { + std::swap(temp[row][k], temp[i][k]); + std::swap(inverse[row][k], inverse[i][k]); + } + } + + double pivot = temp[i][i]; + det *= pivot; + + // scale row i + for (int k = 0; k < 4; ++k) { + temp[i][k] /= pivot; + inverse[i][k] /= pivot; + } + + // eliminate in rows below i + for (int j = i+1; j < 4; ++j) { + double t = temp[j][i]; + if (!isExactlyEqual(t, 0.0)) { + // subtract scaled row i from row j + for (int k = 0; k < 4; ++k) { + temp[j][k] -= temp[i][k] * t; + inverse[j][k] -= inverse[i][k] * t; + } + } + } + } + + // Backward elimination step + for (int i = 3; i > 0; --i) { + for (int j = 0; j < i; ++j) { + double t = temp[j][i]; + + if (!isExactlyEqual(t, 0.0)) { + for (int k = 0; k < 4; ++k) { + inverse[j][k] -= inverse[i][k]*t; + } + } + } + } + return det*det >= tolerance*tolerance; +} + +template +inline bool isAffine(const Mat4& m) { + return (m.col(3) == Vec4(0, 0, 0, 1)); +} + +template +inline bool hasTranslation(const Mat4& m) { + return (m.row(3) != Vec4(0, 0, 0, 1)); +} + + +using Mat4s = Mat4; +using Mat4d = Mat4; +using Mat4f = Mat4d; + +} // namespace math + + +template<> inline math::Mat4s zeroVal() { return math::Mat4s::zero(); } +template<> inline math::Mat4d zeroVal() { return math::Mat4d::zero(); } + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_MAT4_H_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Math.h b/openvdb/math/Math.h new file mode 100644 index 00000000..d59e0a14 --- /dev/null +++ b/openvdb/math/Math.h @@ -0,0 +1,913 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Math.h +/// @brief General-purpose arithmetic and comparison routines, most of which +/// accept arbitrary value types (or at least arbitrary numeric value types) + +#ifndef OPENVDB_MATH_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_HAS_BEEN_INCLUDED + +#include +#include +#include +#include // for std::max() +#include +#include // for std::ceil(), std::fabs(), std::pow(), std::sqrt(), etc. +#include // for abs(int) +#include +#include +#include // for std::is_arithmetic + + +// Compile pragmas + +// Intel(r) compiler fires remark #1572: floating-point equality and inequality +// comparisons are unrealiable when == or != is used with floating point operands. +#if defined(__INTEL_COMPILER) + #define OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN \ + _Pragma("warning (push)") \ + _Pragma("warning (disable:1572)") + #define OPENVDB_NO_FP_EQUALITY_WARNING_END \ + _Pragma("warning (pop)") +#elif defined(__clang__) + #define OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN \ + PRAGMA(clang diagnostic push) \ + PRAGMA(clang diagnostic ignored "-Wfloat-equal") + #define OPENVDB_NO_FP_EQUALITY_WARNING_END \ + PRAGMA(clang diagnostic pop) +#else + // For GCC, #pragma GCC diagnostic ignored "-Wfloat-equal" + // isn't working until gcc 4.2+, + // Trying + // #pragma GCC system_header + // creates other problems, most notably "warning: will never be executed" + // in from templates, unsure of how to work around. + // If necessary, could use integer based comparisons for equality + #define OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + #define OPENVDB_NO_FP_EQUALITY_WARNING_END +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// @brief Return the value of type T that corresponds to zero. +/// @note A zeroVal() specialization must be defined for each @c ValueType T +/// that cannot be constructed using the form @c T(0). For example, @c std::string(0) +/// treats 0 as @c nullptr and throws a @c std::logic_error. +template inline T zeroVal() { return T(0); } +/// Return the @c std::string value that corresponds to zero. +template<> inline std::string zeroVal() { return ""; } +/// Return the @c bool value that corresponds to zero. +template<> inline bool zeroVal() { return false; } + +/// @todo These won't be needed if we eliminate StringGrids. +//@{ +/// @brief Needed to support the (zeroVal() + val) idiom +/// when @c ValueType is @c std::string +inline std::string operator+(const std::string& s, bool) { return s; } +inline std::string operator+(const std::string& s, int) { return s; } +inline std::string operator+(const std::string& s, float) { return s; } +inline std::string operator+(const std::string& s, double) { return s; } +//@} + + +namespace math { + +/// @brief Return the unary negation of the given value. +/// @note A negative() specialization must be defined for each ValueType T +/// for which unary negation is not defined. +template inline T negative(const T& val) { return T(-val); } +/// Return the negation of the given boolean. +template<> inline bool negative(const bool& val) { return !val; } +/// Return the "negation" of the given string. +template<> inline std::string negative(const std::string& val) { return val; } + + +//@{ +/// Tolerance for floating-point comparison +template struct Tolerance { static T value() { return zeroVal(); } }; +template<> struct Tolerance { static float value() { return 1e-8f; } }; +template<> struct Tolerance { static double value() { return 1e-15; } }; +//@} + +//@{ +/// Delta for small floating-point offsets +template struct Delta { static T value() { return zeroVal(); } }; +template<> struct Delta { static float value() { return 1e-5f; } }; +template<> struct Delta { static double value() { return 1e-9; } }; +//@} + + +// ==========> Random Values <================== + +/// @brief Simple generator of random numbers over the range [0, 1) +/// @details Thread-safe as long as each thread has its own Rand01 instance +template +class Rand01 +{ +private: + EngineType mEngine; + std::uniform_real_distribution mRand; + +public: + using ValueType = FloatType; + + /// @brief Initialize the generator. + /// @param engine random number generator + Rand01(const EngineType& engine): mEngine(engine) {} + + /// @brief Initialize the generator. + /// @param seed seed value for the random number generator + Rand01(unsigned int seed): mEngine(static_cast(seed)) {} + + /// Set the seed value for the random number generator + void setSeed(unsigned int seed) + { + mEngine.seed(static_cast(seed)); + } + + /// Return a const reference to the random number generator. + const EngineType& engine() const { return mEngine; } + + /// Return a uniformly distributed random number in the range [0, 1). + FloatType operator()() { return mRand(mEngine); } +}; + +using Random01 = Rand01; + + +/// @brief Simple random integer generator +/// @details Thread-safe as long as each thread has its own RandInt instance +template +class RandInt +{ +private: + using Distr = std::uniform_int_distribution; + EngineType mEngine; + Distr mRand; + +public: + /// @brief Initialize the generator. + /// @param engine random number generator + /// @param imin,imax generate integers that are uniformly distributed over [imin, imax] + RandInt(const EngineType& engine, IntType imin, IntType imax): + mEngine(engine), + mRand(std::min(imin, imax), std::max(imin, imax)) + {} + + /// @brief Initialize the generator. + /// @param seed seed value for the random number generator + /// @param imin,imax generate integers that are uniformly distributed over [imin, imax] + RandInt(unsigned int seed, IntType imin, IntType imax): + mEngine(static_cast(seed)), + mRand(std::min(imin, imax), std::max(imin, imax)) + {} + + /// Change the range over which integers are distributed to [imin, imax]. + void setRange(IntType imin, IntType imax) + { + mRand = Distr(std::min(imin, imax), std::max(imin, imax)); + } + + /// Set the seed value for the random number generator + void setSeed(unsigned int seed) + { + mEngine.seed(static_cast(seed)); + } + + /// Return a const reference to the random number generator. + const EngineType& engine() const { return mEngine; } + + /// Return a randomly-generated integer in the current range. + IntType operator()() { return mRand(mEngine); } + + /// @brief Return a randomly-generated integer in the new range [imin, imax], + /// without changing the current range. + IntType operator()(IntType imin, IntType imax) + { + const IntType lo = std::min(imin, imax), hi = std::max(imin, imax); + return mRand(mEngine, typename Distr::param_type(lo, hi)); + } +}; + +using RandomInt = RandInt; + + +// ==========> Clamp <================== + +/// Return @a x clamped to [@a min, @a max] +template +inline Type +Clamp(Type x, Type min, Type max) +{ + assert( !(min>max) ); + return x > min ? x < max ? x : max : min; +} + + +/// Return @a x clamped to [0, 1] +template +inline Type +Clamp01(Type x) { return x > Type(0) ? x < Type(1) ? x : Type(1) : Type(0); } + + +/// Return @c true if @a x is outside [0,1] +template +inline bool +ClampTest01(Type &x) +{ + if (x >= Type(0) && x <= Type(1)) return false; + x = x < Type(0) ? Type(0) : Type(1); + return true; +} + +/// @brief Return 0 if @a x < @a 0, 1 if @a x > 1 or else (3 − 2 @a x) @a x². +template +inline Type +SmoothUnitStep(Type x) +{ + return x > 0 ? x < 1 ? (3-2*x)*x*x : Type(1) : Type(0); +} + +/// @brief Return 0 if @a x < @a min, 1 if @a x > @a max or else (3 − 2 @a t) @a t², +/// where @a t = (@a x − @a min)/(@a max − @a min). +template +inline Type +SmoothUnitStep(Type x, Type min, Type max) +{ + assert(min < max); + return SmoothUnitStep((x-min)/(max-min)); +} + + +// ==========> Absolute Value <================== + + +//@{ +/// Return the absolute value of the given quantity. +inline int32_t Abs(int32_t i) { return abs(i); } +inline int64_t Abs(int64_t i) +{ +#ifdef _MSC_VER + return (i < int64_t(0) ? -i : i); +#else + return labs(i); +#endif +} +inline float Abs(float x) { return std::fabs(x); } +inline double Abs(double x) { return std::fabs(x); } +inline long double Abs(long double x) { return std::fabs(x); } +inline uint32_t Abs(uint32_t i) { return i; } +inline uint64_t Abs(uint64_t i) { return i; } +inline bool Abs(bool b) { return b; } +// On OSX size_t and uint64_t are different types +#if defined(__APPLE__) || defined(MACOSX) +inline size_t Abs(size_t i) { return i; } +#endif +//@} + + +//////////////////////////////////////// + + +// ==========> Value Comparison <================== + + +/// Return @c true if @a x is exactly equal to zero. +template +inline bool +isZero(const Type& x) +{ + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + return x == zeroVal(); + OPENVDB_NO_FP_EQUALITY_WARNING_END +} + + +/// @brief Return @c true if @a x is equal to zero to within +/// the default floating-point comparison tolerance. +template +inline bool +isApproxZero(const Type& x) +{ + const Type tolerance = Type(zeroVal() + Tolerance::value()); + return !(x > tolerance) && !(x < -tolerance); +} + +/// Return @c true if @a x is equal to zero to within the given tolerance. +template +inline bool +isApproxZero(const Type& x, const Type& tolerance) +{ + return !(x > tolerance) && !(x < -tolerance); +} + + +/// Return @c true if @a x is less than zero. +template +inline bool +isNegative(const Type& x) { return x < zeroVal(); } + +// Return false, since bool values are never less than zero. +template<> inline bool isNegative(const bool&) { return false; } + + +/// Return @c true if @a x is finite. +inline bool +isFinite(const float x) { return std::isfinite(x); } + +/// Return @c true if @a x is finite. +template::value, int>::type = 0> +inline bool +isFinite(const Type& x) { return std::isfinite(static_cast(x)); } + + +/// Return @c true if @a x is an infinity value (either positive infinity or negative infinity). +inline bool +isInfinite(const float x) { return std::isinf(x); } + +/// Return @c true if @a x is an infinity value (either positive infinity or negative infinity). +template::value, int>::type = 0> +inline bool +isInfinite(const Type& x) { return std::isinf(static_cast(x)); } + + +/// Return @c true if @a x is a NaN (Not-A-Number) value. +inline bool +isNan(const float x) { return std::isnan(x); } + +/// Return @c true if @a x is a NaN (Not-A-Number) value. +template::value, int>::type = 0> +inline bool +isNan(const Type& x) { return std::isnan(static_cast(x)); } + + +/// @brief Return @c true if @a a is equal to @a b to within +/// the default floating-point comparison tolerance. +template +inline bool +isApproxEqual(const Type& a, const Type& b) +{ + const Type tolerance = Type(zeroVal() + Tolerance::value()); + return !(Abs(a - b) > tolerance); +} + + +/// Return @c true if @a a is equal to @a b to within the given tolerance. +template +inline bool +isApproxEqual(const Type& a, const Type& b, const Type& tolerance) +{ + return !(Abs(a - b) > tolerance); +} + +#define OPENVDB_EXACT_IS_APPROX_EQUAL(T) \ + template<> inline bool isApproxEqual(const T& a, const T& b) { return a == b; } \ + template<> inline bool isApproxEqual(const T& a, const T& b, const T&) { return a == b; } \ + /**/ + +OPENVDB_EXACT_IS_APPROX_EQUAL(bool) +OPENVDB_EXACT_IS_APPROX_EQUAL(std::string) + + +/// @brief Return @c true if @a a is larger than @a b to within +/// the given tolerance, i.e., if @a b - @a a < @a tolerance. +template +inline bool +isApproxLarger(const Type& a, const Type& b, const Type& tolerance) +{ + return (b - a < tolerance); +} + + +/// @brief Return @c true if @a a is exactly equal to @a b. +template +inline bool +isExactlyEqual(const T0& a, const T1& b) +{ + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + return a == b; + OPENVDB_NO_FP_EQUALITY_WARNING_END +} + + +template +inline bool +isRelOrApproxEqual(const Type& a, const Type& b, const Type& absTol, const Type& relTol) +{ + // First check to see if we are inside the absolute tolerance + // Necessary for numbers close to 0 + if (!(Abs(a - b) > absTol)) return true; + + // Next check to see if we are inside the relative tolerance + // to handle large numbers that aren't within the abs tolerance + // but could be the closest floating point representation + double relError; + if (Abs(b) > Abs(a)) { + relError = Abs((a - b) / b); + } else { + relError = Abs((a - b) / a); + } + return (relError <= relTol); +} + +template<> +inline bool +isRelOrApproxEqual(const bool& a, const bool& b, const bool&, const bool&) +{ + return (a == b); +} + + +// Avoid strict aliasing issues by using type punning +// http://cellperformance.beyond3d.com/articles/2006/06/understanding-strict-aliasing.html +// Using "casting through a union(2)" +inline int32_t +floatToInt32(const float aFloatValue) +{ + union FloatOrInt32 { float floatValue; int32_t int32Value; }; + const FloatOrInt32* foi = reinterpret_cast(&aFloatValue); + return foi->int32Value; +} + + +inline int64_t +doubleToInt64(const double aDoubleValue) +{ + union DoubleOrInt64 { double doubleValue; int64_t int64Value; }; + const DoubleOrInt64* dol = reinterpret_cast(&aDoubleValue); + return dol->int64Value; +} + + +// aUnitsInLastPlace is the allowed difference between the least significant digits +// of the numbers' floating point representation +// Please read the reference paper before trying to use isUlpsEqual +// http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm +inline bool +isUlpsEqual(const double aLeft, const double aRight, const int64_t aUnitsInLastPlace) +{ + int64_t longLeft = doubleToInt64(aLeft); + // Because of 2's complement, must restore lexicographical order + if (longLeft < 0) { + longLeft = INT64_C(0x8000000000000000) - longLeft; + } + + int64_t longRight = doubleToInt64(aRight); + // Because of 2's complement, must restore lexicographical order + if (longRight < 0) { + longRight = INT64_C(0x8000000000000000) - longRight; + } + + int64_t difference = labs(longLeft - longRight); + return (difference <= aUnitsInLastPlace); +} + +inline bool +isUlpsEqual(const float aLeft, const float aRight, const int32_t aUnitsInLastPlace) +{ + int32_t intLeft = floatToInt32(aLeft); + // Because of 2's complement, must restore lexicographical order + if (intLeft < 0) { + intLeft = 0x80000000 - intLeft; + } + + int32_t intRight = floatToInt32(aRight); + // Because of 2's complement, must restore lexicographical order + if (intRight < 0) { + intRight = 0x80000000 - intRight; + } + + int32_t difference = abs(intLeft - intRight); + return (difference <= aUnitsInLastPlace); +} + + +//////////////////////////////////////// + + +// ==========> Pow <================== + +/// Return @a x2. +template +inline Type Pow2(Type x) { return x*x; } + +/// Return @a x3. +template +inline Type Pow3(Type x) { return x*x*x; } + +/// Return @a x4. +template +inline Type Pow4(Type x) { return Pow2(Pow2(x)); } + +/// Return @a x@a n. +template +Type +Pow(Type x, int n) +{ + Type ans = 1; + if (n < 0) { + n = -n; + x = Type(1)/x; + } + while (n--) ans *= x; + return ans; +} + +//@{ +/// Return @a b@a e. +inline float +Pow(float b, float e) +{ + assert( b >= 0.0f && "Pow(float,float): base is negative" ); + return powf(b,e); +} + +inline double +Pow(double b, double e) +{ + assert( b >= 0.0 && "Pow(double,double): base is negative" ); + return std::pow(b,e); +} +//@} + + +// ==========> Max <================== + +/// Return the maximum of two values +template +inline const Type& +Max(const Type& a, const Type& b) +{ + return std::max(a,b); +} + +/// Return the maximum of three values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c) +{ + return std::max(std::max(a,b), c); +} + +/// Return the maximum of four values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c, const Type& d) +{ + return std::max(std::max(a,b), std::max(c,d)); +} + +/// Return the maximum of five values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c, const Type& d, const Type& e) +{ + return std::max(std::max(a,b), Max(c,d,e)); +} + +/// Return the maximum of six values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c, const Type& d, const Type& e, const Type& f) +{ + return std::max(Max(a,b,c), Max(d,e,f)); +} + +/// Return the maximum of seven values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c, const Type& d, + const Type& e, const Type& f, const Type& g) +{ + return std::max(Max(a,b,c,d), Max(e,f,g)); +} + +/// Return the maximum of eight values +template +inline const Type& +Max(const Type& a, const Type& b, const Type& c, const Type& d, + const Type& e, const Type& f, const Type& g, const Type& h) +{ + return std::max(Max(a,b,c,d), Max(e,f,g,h)); +} + + +// ==========> Min <================== + +/// Return the minimum of two values +template +inline const Type& +Min(const Type& a, const Type& b) { return std::min(a, b); } + +/// Return the minimum of three values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c) { return std::min(std::min(a, b), c); } + +/// Return the minimum of four values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c, const Type& d) +{ + return std::min(std::min(a, b), std::min(c, d)); +} + +/// Return the minimum of five values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c, const Type& d, const Type& e) +{ + return std::min(std::min(a,b), Min(c,d,e)); +} + +/// Return the minimum of six values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c, const Type& d, const Type& e, const Type& f) +{ + return std::min(Min(a,b,c), Min(d,e,f)); +} + +/// Return the minimum of seven values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c, const Type& d, + const Type& e, const Type& f, const Type& g) +{ + return std::min(Min(a,b,c,d), Min(e,f,g)); +} + +/// Return the minimum of eight values +template +inline const Type& +Min(const Type& a, const Type& b, const Type& c, const Type& d, + const Type& e, const Type& f, const Type& g, const Type& h) +{ + return std::min(Min(a,b,c,d), Min(e,f,g,h)); +} + + +// ============> Exp <================== + +/// Return @a e@a x. +template +inline Type Exp(const Type& x) { return std::exp(x); } + +// ============> Sin <================== + +//@{ +/// Return sin @a x. +inline float Sin(const float& x) { return std::sin(x); } + +inline double Sin(const double& x) { return std::sin(x); } +//@} + +// ============> Cos <================== + +//@{ +/// Return cos @a x. +inline float Cos(const float& x) { return std::cos(x); } + +inline double Cos(const double& x) { return std::cos(x); } +//@} + + +//////////////////////////////////////// + + +/// Return the sign of the given value as an integer (either -1, 0 or 1). +template +inline int Sign(const Type &x) { return (zeroVal() < x) - (x < zeroVal()); } + + +/// @brief Return @c true if @a a and @a b have different signs. +/// @note Zero is considered a positive number. +template +inline bool +SignChange(const Type& a, const Type& b) +{ + return ( (a()) ^ (b()) ); +} + + +/// @brief Return @c true if the interval [@a a, @a b] includes zero, +/// i.e., if either @a a or @a b is zero or if they have different signs. +template +inline bool +ZeroCrossing(const Type& a, const Type& b) +{ + return a * b <= zeroVal(); +} + + +//@{ +/// Return the square root of a floating-point value. +inline float Sqrt(float x) { return std::sqrt(x); } +inline double Sqrt(double x) { return std::sqrt(x); } +inline long double Sqrt(long double x) { return std::sqrt(x); } +//@} + + +//@{ +/// Return the cube root of a floating-point value. +inline float Cbrt(float x) { return std::cbrt(x); } +inline double Cbrt(double x) { return std::cbrt(x); } +inline long double Cbrt(long double x) { return std::cbrt(x); } +//@} + + +//@{ +/// Return the remainder of @a x / @a y. +inline int Mod(int x, int y) { return (x % y); } +inline float Mod(float x, float y) { return std::fmod(x, y); } +inline double Mod(double x, double y) { return std::fmod(x, y); } +inline long double Mod(long double x, long double y) { return std::fmod(x, y); } +template inline Type Remainder(Type x, Type y) { return Mod(x, y); } +//@} + + +//@{ +/// Return @a x rounded up to the nearest integer. +inline float RoundUp(float x) { return std::ceil(x); } +inline double RoundUp(double x) { return std::ceil(x); } +inline long double RoundUp(long double x) { return std::ceil(x); } +//@} +/// Return @a x rounded up to the nearest multiple of @a base. +template +inline Type +RoundUp(Type x, Type base) +{ + Type remainder = Remainder(x, base); + return remainder ? x-remainder+base : x; +} + + +//@{ +/// Return @a x rounded down to the nearest integer. +inline float RoundDown(float x) { return std::floor(x); } +inline double RoundDown(double x) { return std::floor(x); } +inline long double RoundDown(long double x) { return std::floor(x); } +//@} +/// Return @a x rounded down to the nearest multiple of @a base. +template +inline Type +RoundDown(Type x, Type base) +{ + Type remainder = Remainder(x, base); + return remainder ? x-remainder : x; +} + + +//@{ +/// Return @a x rounded to the nearest integer. +inline float Round(float x) { return RoundDown(x + 0.5f); } +inline double Round(double x) { return RoundDown(x + 0.5); } +inline long double Round(long double x) { return RoundDown(x + 0.5l); } +//@} + + +/// Return the euclidean remainder of @a x. +/// Note unlike % operator this will always return a positive result +template +inline Type +EuclideanRemainder(Type x) { return x - RoundDown(x); } + + +/// Return the integer part of @a x. +template +inline Type +IntegerPart(Type x) +{ + return (x > 0 ? RoundDown(x) : RoundUp(x)); +} + +/// Return the fractional part of @a x. +template +inline Type +FractionalPart(Type x) { return Mod(x,Type(1)); } + + +//@{ +/// Return the floor of @a x. +inline int Floor(float x) { return int(RoundDown(x)); } +inline int Floor(double x) { return int(RoundDown(x)); } +inline int Floor(long double x) { return int(RoundDown(x)); } +//@} + + +//@{ +/// Return the ceiling of @a x. +inline int Ceil(float x) { return int(RoundUp(x)); } +inline int Ceil(double x) { return int(RoundUp(x)); } +inline int Ceil(long double x) { return int(RoundUp(x)); } +//@} + + +/// Return @a x if it is greater or equal in magnitude than @a delta. Otherwise, return zero. +template +inline Type Chop(Type x, Type delta) { return (Abs(x) < delta ? zeroVal() : x); } + + +/// Return @a x truncated to the given number of decimal digits. +template +inline Type +Truncate(Type x, unsigned int digits) +{ + Type tenth = Pow(10,digits); + return RoundDown(x*tenth+0.5)/tenth; +} + + +//////////////////////////////////////// + + +/// @brief 8-bit integer values print to std::ostreams as characters. +/// Cast them so that they print as integers instead. +template +inline auto PrintCast(const T& val) -> typename std::enable_if::value + && !std::is_same::value, const T&>::type { return val; } +inline int32_t PrintCast(int8_t val) { return int32_t(val); } +inline uint32_t PrintCast(uint8_t val) { return uint32_t(val); } + + +//////////////////////////////////////// + + +/// Return the inverse of @a x. +template +inline Type +Inv(Type x) +{ + assert(x); + return Type(1)/x; +} + + +enum Axis { + X_AXIS = 0, + Y_AXIS = 1, + Z_AXIS = 2 +}; + +// enum values are consistent with their historical mx analogs. +enum RotationOrder { + XYZ_ROTATION = 0, + XZY_ROTATION, + YXZ_ROTATION, + YZX_ROTATION, + ZXY_ROTATION, + ZYX_ROTATION, + XZX_ROTATION, + ZXZ_ROTATION +}; + + +template +struct promote { + using type = typename boost::numeric::conversion_traits::supertype; +}; + + +/// @brief Return the index [0,1,2] of the smallest value in a 3D vector. +/// @note This methods assumes operator[] exists and avoids branching. +/// @details If two components of the input vector are equal and smaller than the +/// third component, the largest index of the two is always returned. +/// If all three vector components are equal the largest index, i.e. 2, is +/// returned. In other words the return value corresponds to the largest index +/// of the of the smallest vector components. +template +size_t +MinIndex(const Vec3T& v) +{ + static const size_t hashTable[8] = { 2, 1, 9, 1, 2, 9, 0, 0 };//9 is a dummy value + const size_t hashKey = + ((v[0] < v[1]) << 2) + ((v[0] < v[2]) << 1) + (v[1] < v[2]);// ?*4+?*2+?*1 + return hashTable[hashKey]; +} + + +/// @brief Return the index [0,1,2] of the largest value in a 3D vector. +/// @note This methods assumes operator[] exists and avoids branching. +/// @details If two components of the input vector are equal and larger than the +/// third component, the largest index of the two is always returned. +/// If all three vector components are equal the largest index, i.e. 2, is +/// returned. In other words the return value corresponds to the largest index +/// of the largest vector components. +template +size_t +MaxIndex(const Vec3T& v) +{ + static const size_t hashTable[8] = { 2, 1, 9, 1, 2, 9, 0, 0 };//9 is a dummy value + const size_t hashKey = + ((v[0] > v[1]) << 2) + ((v[0] > v[2]) << 1) + (v[1] > v[2]);// ?*4+?*2+?*1 + return hashTable[hashKey]; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_MATH_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Operators.h b/openvdb/math/Operators.h new file mode 100644 index 00000000..74f1ff63 --- /dev/null +++ b/openvdb/math/Operators.h @@ -0,0 +1,2126 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file math/Operators.h + +#ifndef OPENVDB_MATH_OPERATORS_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_OPERATORS_HAS_BEEN_INCLUDED + +#include "FiniteDifference.h" +#include "Stencils.h" +#include "Maps.h" +#include "Transform.h" +#include // for std::sqrt() + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +// Simple tools to help determine when type conversions are needed +template struct is_vec3d { static const bool value = false; }; +template<> struct is_vec3d { static const bool value = true; }; + +template struct is_double { static const bool value = false; }; +template<> struct is_double { static const bool value = true; }; + + +/// @brief Adapter to associate a map with a world-space operator, +/// giving it the same call signature as an index-space operator +/// @todo For now, the operator's result type must be specified explicitly, +/// but eventually it should be possible, via traits, to derive the result type +/// from the operator type. +template +struct MapAdapter { + MapAdapter(const MapType& m): map(m) {} + + template + inline ResultType + result(const AccessorType& grid, const Coord& ijk) { return OpType::result(map, grid, ijk); } + + template + inline ResultType + result(const StencilType& stencil) { return OpType::result(map, stencil); } + + const MapType map; +}; + + +/// Adapter for vector-valued index-space operators to return the vector magnitude +template +struct ISOpMagnitude { + template + static inline double result(const AccessorType& grid, const Coord& ijk) { + return double(OpType::result(grid, ijk).length()); + } + + template + static inline double result(const StencilType& stencil) { + return double(OpType::result(stencil).length()); + } +}; + +/// Adapter for vector-valued world-space operators to return the vector magnitude +template +struct OpMagnitude { + template + static inline double result(const MapT& map, const AccessorType& grid, const Coord& ijk) { + return double(OpType::result(map, grid, ijk).length()); + } + + template + static inline double result(const MapT& map, const StencilType& stencil) { + return double(OpType::result(map, stencil).length()); + } +}; + + +namespace internal { + +// This additional layer is necessary for Visual C++ to compile. +template +struct ReturnValue { + using ValueType = typename T::ValueType; + using Vec3Type = math::Vec3; +}; + +} // namespace internal + +// ---- Operators defined in index space + + +//@{ +/// @brief Gradient operators defined in index space of various orders +template +struct ISGradient +{ + // random access version + template static Vec3 + result(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = Vec3; + return Vec3Type( D1::inX(grid, ijk), + D1::inY(grid, ijk), + D1::inZ(grid, ijk) ); + } + + // stencil access version + template static Vec3 + result(const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = Vec3; + return Vec3Type( D1::inX(stencil), + D1::inY(stencil), + D1::inZ(stencil) ); + } +}; +//@} + +/// struct that relates the BiasedGradientScheme to the +/// forward and backward difference methods used, as well as to +/// the correct stencil type for index space use +template +struct BIAS_SCHEME { + static const DScheme FD = FD_1ST; + static const DScheme BD = BD_1ST; + + template + struct ISStencil { + using StencilType = SevenPointStencil; + }; +}; + +template<> struct BIAS_SCHEME +{ + static const DScheme FD = FD_1ST; + static const DScheme BD = BD_1ST; + + template + struct ISStencil { + using StencilType = SevenPointStencil; + }; +}; + +template<> struct BIAS_SCHEME +{ + static const DScheme FD = FD_2ND; + static const DScheme BD = BD_2ND; + + template + struct ISStencil { + using StencilType = ThirteenPointStencil; + }; +}; +template<> struct BIAS_SCHEME +{ + static const DScheme FD = FD_3RD; + static const DScheme BD = BD_3RD; + + template + struct ISStencil { + using StencilType = NineteenPointStencil; + }; +}; +template<> struct BIAS_SCHEME +{ + static const DScheme FD = FD_WENO5; + static const DScheme BD = BD_WENO5; + + template + struct ISStencil { + using StencilType = NineteenPointStencil; + }; +}; +template<> struct BIAS_SCHEME +{ + static const DScheme FD = FD_HJWENO5; + static const DScheme BD = BD_HJWENO5; + + template + struct ISStencil { + using StencilType = NineteenPointStencil; + }; +}; + + +//@{ +/// @brief Biased Gradient Operators, using upwinding defined by the @c Vec3Bias input + +template +struct ISGradientBiased +{ + static const DScheme FD = BIAS_SCHEME::FD; + static const DScheme BD = BIAS_SCHEME::BD; + + // random access version + template + static Vec3 + result(const Accessor& grid, const Coord& ijk, const Vec3Bias& V) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = Vec3; + + return Vec3Type(V[0]<0 ? D1::inX(grid,ijk) : D1::inX(grid,ijk), + V[1]<0 ? D1::inY(grid,ijk) : D1::inY(grid,ijk), + V[2]<0 ? D1::inZ(grid,ijk) : D1::inZ(grid,ijk) ); + } + + // stencil access version + template + static Vec3 + result(const StencilT& stencil, const Vec3Bias& V) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = Vec3; + + return Vec3Type(V[0]<0 ? D1::inX(stencil) : D1::inX(stencil), + V[1]<0 ? D1::inY(stencil) : D1::inY(stencil), + V[2]<0 ? D1::inZ(stencil) : D1::inZ(stencil) ); + } +}; + + +template +struct ISGradientNormSqrd +{ + static const DScheme FD = BIAS_SCHEME::FD; + static const DScheme BD = BIAS_SCHEME::BD; + + + // random access version + template + static typename Accessor::ValueType + result(const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = math::Vec3; + + Vec3Type up = ISGradient::result(grid, ijk); + Vec3Type down = ISGradient::result(grid, ijk); + return math::GodunovsNormSqrd(grid.getValue(ijk)>0, down, up); + } + + // stencil access version + template + static typename StencilT::ValueType + result(const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = math::Vec3; + + Vec3Type up = ISGradient::result(stencil); + Vec3Type down = ISGradient::result(stencil); + return math::GodunovsNormSqrd(stencil.template getValue<0, 0, 0>()>0, down, up); + } +}; + +#ifdef DWA_OPENVDB // for SIMD - note will do the computations in float +template<> +struct ISGradientNormSqrd +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk) + { + struct GetValue + { + const Accessor& acc; + GetValue(const Accessor& acc_): acc(acc_) {} + // Return the grid value at ijk converted to simd::Float4::value_type (= float). + inline simd::Float4::value_type operator()(const Coord& ijk_) { + return static_cast(acc.getValue(ijk_)); + } + } + valueAt(grid); + + // SSE optimized + const simd::Float4 + v1(valueAt(ijk.offsetBy(-2, 0, 0)) - valueAt(ijk.offsetBy(-3, 0, 0)), + valueAt(ijk.offsetBy( 0,-2, 0)) - valueAt(ijk.offsetBy( 0,-3, 0)), + valueAt(ijk.offsetBy( 0, 0,-2)) - valueAt(ijk.offsetBy( 0, 0,-3)), 0), + v2(valueAt(ijk.offsetBy(-1, 0, 0)) - valueAt(ijk.offsetBy(-2, 0, 0)), + valueAt(ijk.offsetBy( 0,-1, 0)) - valueAt(ijk.offsetBy( 0,-2, 0)), + valueAt(ijk.offsetBy( 0, 0,-1)) - valueAt(ijk.offsetBy( 0, 0,-2)), 0), + v3(valueAt(ijk ) - valueAt(ijk.offsetBy(-1, 0, 0)), + valueAt(ijk ) - valueAt(ijk.offsetBy( 0,-1, 0)), + valueAt(ijk ) - valueAt(ijk.offsetBy( 0, 0,-1)), 0), + v4(valueAt(ijk.offsetBy( 1, 0, 0)) - valueAt(ijk ), + valueAt(ijk.offsetBy( 0, 1, 0)) - valueAt(ijk ), + valueAt(ijk.offsetBy( 0, 0, 1)) - valueAt(ijk ), 0), + v5(valueAt(ijk.offsetBy( 2, 0, 0)) - valueAt(ijk.offsetBy( 1, 0, 0)), + valueAt(ijk.offsetBy( 0, 2, 0)) - valueAt(ijk.offsetBy( 0, 1, 0)), + valueAt(ijk.offsetBy( 0, 0, 2)) - valueAt(ijk.offsetBy( 0, 0, 1)), 0), + v6(valueAt(ijk.offsetBy( 3, 0, 0)) - valueAt(ijk.offsetBy( 2, 0, 0)), + valueAt(ijk.offsetBy( 0, 3, 0)) - valueAt(ijk.offsetBy( 0, 2, 0)), + valueAt(ijk.offsetBy( 0, 0, 3)) - valueAt(ijk.offsetBy( 0, 0, 2)), 0), + down = math::WENO5(v1, v2, v3, v4, v5), + up = math::WENO5(v6, v5, v4, v3, v2); + + return math::GodunovsNormSqrd(grid.getValue(ijk)>0, down, up); + } + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& s) + { + using F4Val = simd::Float4::value_type; + + // SSE optimized + const simd::Float4 + v1(F4Val(s.template getValue<-2, 0, 0>()) - F4Val(s.template getValue<-3, 0, 0>()), + F4Val(s.template getValue< 0,-2, 0>()) - F4Val(s.template getValue< 0,-3, 0>()), + F4Val(s.template getValue< 0, 0,-2>()) - F4Val(s.template getValue< 0, 0,-3>()), 0), + v2(F4Val(s.template getValue<-1, 0, 0>()) - F4Val(s.template getValue<-2, 0, 0>()), + F4Val(s.template getValue< 0,-1, 0>()) - F4Val(s.template getValue< 0,-2, 0>()), + F4Val(s.template getValue< 0, 0,-1>()) - F4Val(s.template getValue< 0, 0,-2>()), 0), + v3(F4Val(s.template getValue< 0, 0, 0>()) - F4Val(s.template getValue<-1, 0, 0>()), + F4Val(s.template getValue< 0, 0, 0>()) - F4Val(s.template getValue< 0,-1, 0>()), + F4Val(s.template getValue< 0, 0, 0>()) - F4Val(s.template getValue< 0, 0,-1>()), 0), + v4(F4Val(s.template getValue< 1, 0, 0>()) - F4Val(s.template getValue< 0, 0, 0>()), + F4Val(s.template getValue< 0, 1, 0>()) - F4Val(s.template getValue< 0, 0, 0>()), + F4Val(s.template getValue< 0, 0, 1>()) - F4Val(s.template getValue< 0, 0, 0>()), 0), + v5(F4Val(s.template getValue< 2, 0, 0>()) - F4Val(s.template getValue< 1, 0, 0>()), + F4Val(s.template getValue< 0, 2, 0>()) - F4Val(s.template getValue< 0, 1, 0>()), + F4Val(s.template getValue< 0, 0, 2>()) - F4Val(s.template getValue< 0, 0, 1>()), 0), + v6(F4Val(s.template getValue< 3, 0, 0>()) - F4Val(s.template getValue< 2, 0, 0>()), + F4Val(s.template getValue< 0, 3, 0>()) - F4Val(s.template getValue< 0, 2, 0>()), + F4Val(s.template getValue< 0, 0, 3>()) - F4Val(s.template getValue< 0, 0, 2>()), 0), + down = math::WENO5(v1, v2, v3, v4, v5), + up = math::WENO5(v6, v5, v4, v3, v2); + + return math::GodunovsNormSqrd(s.template getValue<0, 0, 0>()>0, down, up); + } +}; +#endif //DWA_OPENVDB // for SIMD - note will do the computations in float +//@} + + +//@{ +/// @brief Laplacian defined in index space, using various center-difference stencils +template +struct ISLaplacian +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk); + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& stencil); +}; + + +template<> +struct ISLaplacian +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk) + { + return grid.getValue(ijk.offsetBy(1,0,0)) + grid.getValue(ijk.offsetBy(-1, 0, 0)) + + grid.getValue(ijk.offsetBy(0,1,0)) + grid.getValue(ijk.offsetBy(0, -1, 0)) + + grid.getValue(ijk.offsetBy(0,0,1)) + grid.getValue(ijk.offsetBy(0, 0,-1)) + - 6*grid.getValue(ijk); + } + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& stencil) + { + return stencil.template getValue< 1, 0, 0>() + stencil.template getValue<-1, 0, 0>() + + stencil.template getValue< 0, 1, 0>() + stencil.template getValue< 0,-1, 0>() + + stencil.template getValue< 0, 0, 1>() + stencil.template getValue< 0, 0,-1>() + - 6*stencil.template getValue< 0, 0, 0>(); + } +}; + +template<> +struct ISLaplacian +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk) + { + using ValueT = typename Accessor::ValueType; + return static_cast( + (-1./12.)*( + grid.getValue(ijk.offsetBy(2,0,0)) + grid.getValue(ijk.offsetBy(-2, 0, 0)) + + grid.getValue(ijk.offsetBy(0,2,0)) + grid.getValue(ijk.offsetBy( 0,-2, 0)) + + grid.getValue(ijk.offsetBy(0,0,2)) + grid.getValue(ijk.offsetBy( 0, 0,-2)) ) + + (4./3.)*( + grid.getValue(ijk.offsetBy(1,0,0)) + grid.getValue(ijk.offsetBy(-1, 0, 0)) + + grid.getValue(ijk.offsetBy(0,1,0)) + grid.getValue(ijk.offsetBy( 0,-1, 0)) + + grid.getValue(ijk.offsetBy(0,0,1)) + grid.getValue(ijk.offsetBy( 0, 0,-1)) ) + - 7.5*grid.getValue(ijk)); + } + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& stencil) + { + using ValueT = typename StencilT::ValueType; + return static_cast( + (-1./12.)*( + stencil.template getValue< 2, 0, 0>() + stencil.template getValue<-2, 0, 0>() + + stencil.template getValue< 0, 2, 0>() + stencil.template getValue< 0,-2, 0>() + + stencil.template getValue< 0, 0, 2>() + stencil.template getValue< 0, 0,-2>() ) + + (4./3.)*( + stencil.template getValue< 1, 0, 0>() + stencil.template getValue<-1, 0, 0>() + + stencil.template getValue< 0, 1, 0>() + stencil.template getValue< 0,-1, 0>() + + stencil.template getValue< 0, 0, 1>() + stencil.template getValue< 0, 0,-1>() ) + - 7.5*stencil.template getValue< 0, 0, 0>()); + } +}; + +template<> +struct ISLaplacian +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk) + { + using ValueT = typename Accessor::ValueType; + return static_cast( + (1./90.)*( + grid.getValue(ijk.offsetBy(3,0,0)) + grid.getValue(ijk.offsetBy(-3, 0, 0)) + + grid.getValue(ijk.offsetBy(0,3,0)) + grid.getValue(ijk.offsetBy( 0,-3, 0)) + + grid.getValue(ijk.offsetBy(0,0,3)) + grid.getValue(ijk.offsetBy( 0, 0,-3)) ) + - (3./20.)*( + grid.getValue(ijk.offsetBy(2,0,0)) + grid.getValue(ijk.offsetBy(-2, 0, 0)) + + grid.getValue(ijk.offsetBy(0,2,0)) + grid.getValue(ijk.offsetBy( 0,-2, 0)) + + grid.getValue(ijk.offsetBy(0,0,2)) + grid.getValue(ijk.offsetBy( 0, 0,-2)) ) + + 1.5 *( + grid.getValue(ijk.offsetBy(1,0,0)) + grid.getValue(ijk.offsetBy(-1, 0, 0)) + + grid.getValue(ijk.offsetBy(0,1,0)) + grid.getValue(ijk.offsetBy( 0,-1, 0)) + + grid.getValue(ijk.offsetBy(0,0,1)) + grid.getValue(ijk.offsetBy( 0, 0,-1)) ) + - (3*49/18.)*grid.getValue(ijk)); + } + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& stencil) + { + using ValueT = typename StencilT::ValueType; + return static_cast( + (1./90.)*( + stencil.template getValue< 3, 0, 0>() + stencil.template getValue<-3, 0, 0>() + + stencil.template getValue< 0, 3, 0>() + stencil.template getValue< 0,-3, 0>() + + stencil.template getValue< 0, 0, 3>() + stencil.template getValue< 0, 0,-3>() ) + - (3./20.)*( + stencil.template getValue< 2, 0, 0>() + stencil.template getValue<-2, 0, 0>() + + stencil.template getValue< 0, 2, 0>() + stencil.template getValue< 0,-2, 0>() + + stencil.template getValue< 0, 0, 2>() + stencil.template getValue< 0, 0,-2>() ) + + 1.5 *( + stencil.template getValue< 1, 0, 0>() + stencil.template getValue<-1, 0, 0>() + + stencil.template getValue< 0, 1, 0>() + stencil.template getValue< 0,-1, 0>() + + stencil.template getValue< 0, 0, 1>() + stencil.template getValue< 0, 0,-1>() ) + - (3*49/18.)*stencil.template getValue< 0, 0, 0>()); + } +}; +//@} + + +//@{ +/// Divergence operator defined in index space using various first derivative schemes +template +struct ISDivergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const Accessor& grid, const Coord& ijk) + { + return D1Vec::inX(grid, ijk, 0) + + D1Vec::inY(grid, ijk, 1) + + D1Vec::inZ(grid, ijk, 2); + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const StencilT& stencil) + { + return D1Vec::inX(stencil, 0) + + D1Vec::inY(stencil, 1) + + D1Vec::inZ(stencil, 2); + } +}; +//@} + + +//@{ +/// Curl operator defined in index space using various first derivative schemes +template +struct ISCurl +{ + // random access version + template + static typename Accessor::ValueType result(const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + return Vec3Type( D1Vec::inY(grid, ijk, 2) - //dw/dy - dv/dz + D1Vec::inZ(grid, ijk, 1), + D1Vec::inZ(grid, ijk, 0) - //du/dz - dw/dx + D1Vec::inX(grid, ijk, 2), + D1Vec::inX(grid, ijk, 1) - //dv/dx - du/dy + D1Vec::inY(grid, ijk, 0) ); + } + + // stencil access version + template + static typename StencilT::ValueType result(const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + return Vec3Type( D1Vec::inY(stencil, 2) - //dw/dy - dv/dz + D1Vec::inZ(stencil, 1), + D1Vec::inZ(stencil, 0) - //du/dz - dw/dx + D1Vec::inX(stencil, 2), + D1Vec::inX(stencil, 1) - //dv/dx - du/dy + D1Vec::inY(stencil, 0) ); + } +}; +//@} + + +//@{ +/// Compute the mean curvature in index space +template +struct ISMeanCurvature +{ + /// @brief Random access version + /// @return @c true if the gradient is nonzero, in which case the mean curvature + /// is returned in two parts, @a alpha and @a beta, where @a alpha is the numerator + /// in ∇ · (∇Φ / |∇Φ|) and @a beta is |∇Φ|. + template + static bool result(const Accessor& grid, const Coord& ijk, + typename Accessor::ValueType& alpha, + typename Accessor::ValueType& beta) + { + using ValueType = typename Accessor::ValueType; + + const ValueType Dx = D1::inX(grid, ijk); + const ValueType Dy = D1::inY(grid, ijk); + const ValueType Dz = D1::inZ(grid, ijk); + + const ValueType Dx2 = Dx*Dx; + const ValueType Dy2 = Dy*Dy; + const ValueType Dz2 = Dz*Dz; + const ValueType normGrad = Dx2 + Dy2 + Dz2; + if (normGrad <= math::Tolerance::value()) { + alpha = beta = 0; + return false; + } + + const ValueType Dxx = D2::inX(grid, ijk); + const ValueType Dyy = D2::inY(grid, ijk); + const ValueType Dzz = D2::inZ(grid, ijk); + + const ValueType Dxy = D2::inXandY(grid, ijk); + const ValueType Dyz = D2::inYandZ(grid, ijk); + const ValueType Dxz = D2::inXandZ(grid, ijk); + + // for return + alpha = (Dx2*(Dyy+Dzz)+Dy2*(Dxx+Dzz)+Dz2*(Dxx+Dyy)-2*(Dx*(Dy*Dxy+Dz*Dxz)+Dy*Dz*Dyz)); + beta = ValueType(std::sqrt(double(normGrad))); // * 1/dx + return true; + } + + /// @brief Stencil access version + /// @return @c true if the gradient is nonzero, in which case the mean curvature + /// is returned in two parts, @a alpha and @a beta, where @a alpha is the numerator + /// in ∇ · (∇Φ / |∇Φ|) and @a beta is |∇Φ|. + template + static bool result(const StencilT& stencil, + typename StencilT::ValueType& alpha, + typename StencilT::ValueType& beta) + { + using ValueType = typename StencilT::ValueType; + const ValueType Dx = D1::inX(stencil); + const ValueType Dy = D1::inY(stencil); + const ValueType Dz = D1::inZ(stencil); + + const ValueType Dx2 = Dx*Dx; + const ValueType Dy2 = Dy*Dy; + const ValueType Dz2 = Dz*Dz; + const ValueType normGrad = Dx2 + Dy2 + Dz2; + if (normGrad <= math::Tolerance::value()) { + alpha = beta = 0; + return false; + } + + const ValueType Dxx = D2::inX(stencil); + const ValueType Dyy = D2::inY(stencil); + const ValueType Dzz = D2::inZ(stencil); + + const ValueType Dxy = D2::inXandY(stencil); + const ValueType Dyz = D2::inYandZ(stencil); + const ValueType Dxz = D2::inXandZ(stencil); + + // for return + alpha = (Dx2*(Dyy+Dzz)+Dy2*(Dxx+Dzz)+Dz2*(Dxx+Dyy)-2*(Dx*(Dy*Dxy+Dz*Dxz)+Dy*Dz*Dyz)); + beta = ValueType(std::sqrt(double(normGrad))); // * 1/dx + return true; + } +}; + +//////////////////////////////////////////////////////// + +// --- Operators defined in the Range of a given map + +//@{ +/// @brief Center difference gradient operators, defined with respect to +/// the range-space of the @c map +/// @note This will need to be divided by two in the case of CD_2NDT +template +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3d iGradient( ISGradient::result(grid, ijk) ); + return Vec3Type(map.applyIJT(iGradient, ijk.asVec3d())); + } + + // stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const MapType& map, const StencilT& stencil) + { + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3d iGradient( ISGradient::result(stencil) ); + return Vec3Type(map.applyIJT(iGradient, stencil.getCenterCoord().asVec3d())); + } +}; + +// Partial template specialization of Gradient +// translation, any order +template +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const TranslationMap&, const Accessor& grid, const Coord& ijk) + { + return ISGradient::result(grid, ijk); + } + + // stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const TranslationMap&, const StencilT& stencil) + { + return ISGradient::result(stencil); + } +}; + +/// Full template specialization of Gradient +/// uniform scale, 2nd order +template<> +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(grid, ijk) ); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return iGradient * inv2dx; + } + + // stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(stencil) ); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return iGradient * inv2dx; + } +}; + +/// Full template specialization of Gradient +/// uniform scale translate, 2nd order +template<> +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(grid, ijk) ); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return iGradient * inv2dx; + } + + // stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(stencil) ); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return iGradient * inv2dx; + } +}; + +/// Full template specialization of Gradient +/// scale, 2nd order +template<> +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const ScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(grid, ijk) ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto gradient0 = iGradient[0] * map.getInvTwiceScale()[0]; + const auto gradient1 = iGradient[1] * map.getInvTwiceScale()[1]; + const auto gradient2 = iGradient[2] * map.getInvTwiceScale()[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return Vec3Type(ValueType(gradient0), + ValueType(gradient1), + ValueType(gradient2)); + } + + // stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const ScaleMap& map, const StencilT& stencil) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(stencil) ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto gradient0 = iGradient[0] * map.getInvTwiceScale()[0]; + const auto gradient1 = iGradient[1] * map.getInvTwiceScale()[1]; + const auto gradient2 = iGradient[2] * map.getInvTwiceScale()[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return Vec3Type(ValueType(gradient0), + ValueType(gradient1), + ValueType(gradient2)); + } +}; + +/// Full template specialization of Gradient +/// scale translate, 2nd order +template<> +struct Gradient +{ + // random access version + template + static typename internal::ReturnValue::Vec3Type + result(const ScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(grid, ijk) ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto gradient0 = iGradient[0] * map.getInvTwiceScale()[0]; + const auto gradient1 = iGradient[1] * map.getInvTwiceScale()[1]; + const auto gradient2 = iGradient[2] * map.getInvTwiceScale()[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return Vec3Type(ValueType(gradient0), + ValueType(gradient1), + ValueType(gradient2)); + } + + // Stencil access version + template + static typename internal::ReturnValue::Vec3Type + result(const ScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename internal::ReturnValue::ValueType; + using Vec3Type = typename internal::ReturnValue::Vec3Type; + + Vec3Type iGradient( ISGradient::result(stencil) ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto gradient0 = iGradient[0] * map.getInvTwiceScale()[0]; + const auto gradient1 = iGradient[1] * map.getInvTwiceScale()[1]; + const auto gradient2 = iGradient[2] * map.getInvTwiceScale()[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return Vec3Type(ValueType(gradient0), + ValueType(gradient1), + ValueType(gradient2)); + } +}; +//@} + + +//@{ +/// @brief Biased gradient operators, defined with respect to the range-space of the map +/// @note This will need to be divided by two in the case of CD_2NDT +template +struct GradientBiased +{ + // random access version + template static math::Vec3 + result(const MapType& map, const Accessor& grid, const Coord& ijk, + const Vec3& V) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = math::Vec3; + + Vec3d iGradient( ISGradientBiased::result(grid, ijk, V) ); + return Vec3Type(map.applyIJT(iGradient, ijk.asVec3d())); + } + + // stencil access version + template static math::Vec3 + result(const MapType& map, const StencilT& stencil, + const Vec3& V) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = math::Vec3; + + Vec3d iGradient( ISGradientBiased::result(stencil, V) ); + return Vec3Type(map.applyIJT(iGradient, stencil.getCenterCoord().asVec3d())); + } +}; +//@} + + +//////////////////////////////////////////////////////// + +// Computes |Grad[Phi]| using upwinding +template +struct GradientNormSqrd +{ + static const DScheme FD = BIAS_SCHEME::FD; + static const DScheme BD = BIAS_SCHEME::BD; + + + // random access version + template + static typename Accessor::ValueType + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = math::Vec3; + + Vec3Type up = Gradient::result(map, grid, ijk); + Vec3Type down = Gradient::result(map, grid, ijk); + return math::GodunovsNormSqrd(grid.getValue(ijk)>0, down, up); + } + + // stencil access version + template + static typename StencilT::ValueType + result(const MapType& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = math::Vec3; + + Vec3Type up = Gradient::result(map, stencil); + Vec3Type down = Gradient::result(map, stencil); + return math::GodunovsNormSqrd(stencil.template getValue<0, 0, 0>()>0, down, up); + } +}; + +/// Partial template specialization of GradientNormSqrd +template +struct GradientNormSqrd +{ + // random access version + template + static typename Accessor::ValueType + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return invdxdx * ISGradientNormSqrd::result(grid, ijk); + } + + // stencil access version + template + static typename StencilT::ValueType + result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return invdxdx * ISGradientNormSqrd::result(stencil); + } +}; + +/// Partial template specialization of GradientNormSqrd +template +struct GradientNormSqrd +{ + // random access version + template + static typename Accessor::ValueType + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return invdxdx * ISGradientNormSqrd::result(grid, ijk); + } + + // stencil access version + template + static typename StencilT::ValueType + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return invdxdx * ISGradientNormSqrd::result(stencil); + } +}; + + +//@{ +/// @brief Compute the divergence of a vector-valued grid using differencing +/// of various orders, the result defined with respect to the range-space of the map. +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + for (int i=0; i < 3; i++) { + Vec3d vec( D1Vec::inX(grid, ijk, i), + D1Vec::inY(grid, ijk, i), + D1Vec::inZ(grid, ijk, i) ); + div += ValueType(map.applyIJT(vec, ijk.asVec3d())[i]); + } + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const MapType& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + for (int i=0; i < 3; i++) { + Vec3d vec( D1Vec::inX(stencil, i), + D1Vec::inY(stencil, i), + D1Vec::inZ(stencil, i) ); + div += ValueType(map.applyIJT(vec, stencil.getCenterCoord().asVec3d())[i]); + } + return div; + } +}; + +/// Partial template specialization of Divergence +/// translation, any scheme +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const TranslationMap&, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + div =ISDivergence::result(grid, ijk); + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const TranslationMap&, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + div =ISDivergence::result(stencil); + return div; + } +}; + +/// Partial template specialization of Divergence +/// uniform scale, any scheme +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(grid, ijk); + ValueType invdx = ValueType(map.getInvScale()[0]); + return div * invdx; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(stencil); + ValueType invdx = ValueType(map.getInvScale()[0]); + return div * invdx; + } +}; + +/// Partial template specialization of Divergence +/// uniform scale and translation, any scheme +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(grid, ijk); + ValueType invdx = ValueType(map.getInvScale()[0]); + return div * invdx; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(stencil); + ValueType invdx = ValueType(map.getInvScale()[0]); + return div * invdx; + } +}; + +/// Full template specialization of Divergence +/// uniform scale 2nd order +template<> +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + div =ISDivergence::result(grid, ijk); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return div * inv2dx; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + div =ISDivergence::result(stencil); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return div * inv2dx; + } +}; + +/// Full template specialization of Divergence +/// uniform scale translate 2nd order +template<> +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(grid, ijk); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return div * inv2dx; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + + div =ISDivergence::result(stencil); + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return div * inv2dx; + } +}; + +/// Partial template specialization of Divergence +/// scale, any scheme +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const ScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(grid, ijk, 0) * (map.getInvScale()[0]) + + D1Vec::inY(grid, ijk, 1) * (map.getInvScale()[1]) + + D1Vec::inZ(grid, ijk, 2) * (map.getInvScale()[2])); + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const ScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + div = ValueType( + D1Vec::inX(stencil, 0) * (map.getInvScale()[0]) + + D1Vec::inY(stencil, 1) * (map.getInvScale()[1]) + + D1Vec::inZ(stencil, 2) * (map.getInvScale()[2]) ); + return div; + } +}; + +/// Partial template specialization of Divergence +/// scale translate, any scheme +template +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const ScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(grid, ijk, 0) * (map.getInvScale()[0]) + + D1Vec::inY(grid, ijk, 1) * (map.getInvScale()[1]) + + D1Vec::inZ(grid, ijk, 2) * (map.getInvScale()[2])); + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const ScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div(0); + div = ValueType( + D1Vec::inX(stencil, 0) * (map.getInvScale()[0]) + + D1Vec::inY(stencil, 1) * (map.getInvScale()[1]) + + D1Vec::inZ(stencil, 2) * (map.getInvScale()[2]) ); + return div; + } +}; + +/// Full template specialization Divergence +/// scale 2nd order +template<> +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const ScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(grid, ijk, 0) * (map.getInvTwiceScale()[0]) + + D1Vec::inY(grid, ijk, 1) * (map.getInvTwiceScale()[1]) + + D1Vec::inZ(grid, ijk, 2) * (map.getInvTwiceScale()[2]) ); + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const ScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(stencil, 0) * (map.getInvTwiceScale()[0]) + + D1Vec::inY(stencil, 1) * (map.getInvTwiceScale()[1]) + + D1Vec::inZ(stencil, 2) * (map.getInvTwiceScale()[2]) ); + return div; + } +}; + +/// Full template specialization of Divergence +/// scale and translate, 2nd order +template<> +struct Divergence +{ + // random access version + template static typename Accessor::ValueType::value_type + result(const ScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(grid, ijk, 0) * (map.getInvTwiceScale()[0]) + + D1Vec::inY(grid, ijk, 1) * (map.getInvTwiceScale()[1]) + + D1Vec::inZ(grid, ijk, 2) * (map.getInvTwiceScale()[2]) ); + return div; + } + + // stencil access version + template static typename StencilT::ValueType::value_type + result(const ScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType::value_type; + + ValueType div = ValueType( + D1Vec::inX(stencil, 0) * (map.getInvTwiceScale()[0]) + + D1Vec::inY(stencil, 1) * (map.getInvTwiceScale()[1]) + + D1Vec::inZ(stencil, 2) * (map.getInvTwiceScale()[2]) ); + return div; + } +}; +//@} + + +//@{ +/// @brief Compute the curl of a vector-valued grid using differencing +/// of various orders in the space defined by the range of the map. +template +struct Curl +{ + // random access version + template static typename Accessor::ValueType + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + Vec3Type mat[3]; + for (int i = 0; i < 3; i++) { + Vec3d vec( + D1Vec::inX(grid, ijk, i), + D1Vec::inY(grid, ijk, i), + D1Vec::inZ(grid, ijk, i)); + // dF_i/dx_j (x_1 = x, x_2 = y, x_3 = z) + mat[i] = Vec3Type(map.applyIJT(vec, ijk.asVec3d())); + } + return Vec3Type(mat[2][1] - mat[1][2], // dF_3/dx_2 - dF_2/dx_3 + mat[0][2] - mat[2][0], // dF_1/dx_3 - dF_3/dx_1 + mat[1][0] - mat[0][1]); // dF_2/dx_1 - dF_1/dx_2 + } + + // stencil access version + template static typename StencilT::ValueType + result(const MapType& map, const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + Vec3Type mat[3]; + for (int i = 0; i < 3; i++) { + Vec3d vec( + D1Vec::inX(stencil, i), + D1Vec::inY(stencil, i), + D1Vec::inZ(stencil, i)); + // dF_i/dx_j (x_1 = x, x_2 = y, x_3 = z) + mat[i] = Vec3Type(map.applyIJT(vec, stencil.getCenterCoord().asVec3d())); + } + return Vec3Type(mat[2][1] - mat[1][2], // dF_3/dx_2 - dF_2/dx_3 + mat[0][2] - mat[2][0], // dF_1/dx_3 - dF_3/dx_1 + mat[1][0] - mat[0][1]); // dF_2/dx_1 - dF_1/dx_2 + } +}; + +/// Partial template specialization of Curl +template +struct Curl +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + using ValueType = typename Vec3Type::value_type; + return ISCurl::result(grid, ijk) * ValueType(map.getInvScale()[0]); + } + + // Stencil access version + template static typename StencilT::ValueType + result(const UniformScaleMap& map, const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + using ValueType = typename Vec3Type::value_type; + return ISCurl::result(stencil) * ValueType(map.getInvScale()[0]); + } +}; + +/// Partial template specialization of Curl +template +struct Curl +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(grid, ijk) * ValueType(map.getInvScale()[0]); + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(stencil) * ValueType(map.getInvScale()[0]); + } +}; + +/// Full template specialization of Curl +template<> +struct Curl +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(grid, ijk) * ValueType(map.getInvTwiceScale()[0]); + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleMap& map, const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(stencil) * ValueType(map.getInvTwiceScale()[0]); + } +}; + +/// Full template specialization of Curl +template<> +struct Curl +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using Vec3Type = typename Accessor::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(grid, ijk) * ValueType(map.getInvTwiceScale()[0]); + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using Vec3Type = typename StencilT::ValueType; + using ValueType = typename Vec3Type::value_type; + + return ISCurl::result(stencil) * ValueType(map.getInvTwiceScale()[0]); + } +}; +//@} + + +//@{ +/// @brief Compute the Laplacian at a given location in a grid using finite differencing +/// of various orders. The result is defined in the range of the map. +template +struct Laplacian +{ + // random access version + template + static typename Accessor::ValueType result(const MapType& map, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + // all the second derivatives in index space + ValueType iddx = D2::inX(grid, ijk); + ValueType iddy = D2::inY(grid, ijk); + ValueType iddz = D2::inZ(grid, ijk); + + ValueType iddxy = D2::inXandY(grid, ijk); + ValueType iddyz = D2::inYandZ(grid, ijk); + ValueType iddxz = D2::inXandZ(grid, ijk); + + // second derivatives in index space + Mat3d d2_is(iddx, iddxy, iddxz, + iddxy, iddy, iddyz, + iddxz, iddyz, iddz); + + Mat3d d2_rs; // to hold the second derivative matrix in range space + if (is_linear::value) { + d2_rs = map.applyIJC(d2_is); + } else { + // compute the first derivatives with 2nd order accuracy. + Vec3d d1_is(static_cast(D1::inX(grid, ijk)), + static_cast(D1::inY(grid, ijk)), + static_cast(D1::inZ(grid, ijk))); + + d2_rs = map.applyIJC(d2_is, d1_is, ijk.asVec3d()); + } + + // the trace of the second derivative (range space) matrix is laplacian + return ValueType(d2_rs(0,0) + d2_rs(1,1) + d2_rs(2,2)); + } + + // stencil access version + template + static typename StencilT::ValueType result(const MapType& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + // all the second derivatives in index space + ValueType iddx = D2::inX(stencil); + ValueType iddy = D2::inY(stencil); + ValueType iddz = D2::inZ(stencil); + + ValueType iddxy = D2::inXandY(stencil); + ValueType iddyz = D2::inYandZ(stencil); + ValueType iddxz = D2::inXandZ(stencil); + + // second derivatives in index space + Mat3d d2_is(iddx, iddxy, iddxz, + iddxy, iddy, iddyz, + iddxz, iddyz, iddz); + + Mat3d d2_rs; // to hold the second derivative matrix in range space + if (is_linear::value) { + d2_rs = map.applyIJC(d2_is); + } else { + // compute the first derivatives with 2nd order accuracy. + Vec3d d1_is(D1::inX(stencil), + D1::inY(stencil), + D1::inZ(stencil) ); + + d2_rs = map.applyIJC(d2_is, d1_is, stencil.getCenterCoord().asVec3d()); + } + + // the trace of the second derivative (range space) matrix is laplacian + return ValueType(d2_rs(0,0) + d2_rs(1,1) + d2_rs(2,2)); + } +}; + + +template +struct Laplacian +{ + // random access version + template + static typename Accessor::ValueType result(const TranslationMap&, + const Accessor& grid, const Coord& ijk) + { + return ISLaplacian::result(grid, ijk); + } + + // stencil access version + template + static typename StencilT::ValueType result(const TranslationMap&, const StencilT& stencil) + { + return ISLaplacian::result(stencil); + } +}; + + +// The Laplacian is invariant to rotation or reflection. +template +struct Laplacian +{ + // random access version + template + static typename Accessor::ValueType result(const UnitaryMap&, + const Accessor& grid, const Coord& ijk) + { + return ISLaplacian::result(grid, ijk); + } + + // stencil access version + template + static typename StencilT::ValueType result(const UnitaryMap&, const StencilT& stencil) + { + return ISLaplacian::result(stencil); + } +}; + + +template +struct Laplacian +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ISLaplacian::result(grid, ijk) * invdxdx; + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ISLaplacian::result(stencil) * invdxdx; + } +}; + + +template +struct Laplacian +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ISLaplacian::result(grid, ijk) * invdxdx; + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ISLaplacian::result(stencil) * invdxdx; + } +}; + + +template +struct Laplacian +{ + // random access version + template static typename Accessor::ValueType + result(const ScaleMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + // compute the second derivatives in index space + ValueType iddx = D2::inX(grid, ijk); + ValueType iddy = D2::inY(grid, ijk); + ValueType iddz = D2::inZ(grid, ijk); + const Vec3d& invScaleSqr = map.getInvScaleSqr(); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + // scale them by the appropriate 1/dx^2, 1/dy^2, 1/dz^2 and sum + const ValueType value = iddx * invScaleSqr[0] + iddy * invScaleSqr[1] + iddz * invScaleSqr[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; + } + + // stencil access version + template static typename StencilT::ValueType + result(const ScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + // compute the second derivatives in index space + ValueType iddx = D2::inX(stencil); + ValueType iddy = D2::inY(stencil); + ValueType iddz = D2::inZ(stencil); + const Vec3d& invScaleSqr = map.getInvScaleSqr(); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + // scale them by the appropriate 1/dx^2, 1/dy^2, 1/dz^2 and sum + const ValueType value = iddx * invScaleSqr[0] + iddy * invScaleSqr[1] + iddz * invScaleSqr[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; + } +}; + + +template +struct Laplacian +{ + // random access version + template static typename Accessor::ValueType + result(const ScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + // compute the second derivatives in index space + ValueType iddx = D2::inX(grid, ijk); + ValueType iddy = D2::inY(grid, ijk); + ValueType iddz = D2::inZ(grid, ijk); + const Vec3d& invScaleSqr = map.getInvScaleSqr(); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + // scale them by the appropriate 1/dx^2, 1/dy^2, 1/dz^2 and sum + const ValueType value = iddx * invScaleSqr[0] + iddy * invScaleSqr[1] + iddz * invScaleSqr[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; + } + + // stencil access version + template static typename StencilT::ValueType + result(const ScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + // compute the second derivatives in index space + ValueType iddx = D2::inX(stencil); + ValueType iddy = D2::inY(stencil); + ValueType iddz = D2::inZ(stencil); + const Vec3d& invScaleSqr = map.getInvScaleSqr(); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + // scale them by the appropriate 1/dx^2, 1/dy^2, 1/dz^2 and sum + const ValueType value = iddx * invScaleSqr[0] + iddy * invScaleSqr[1] + iddz * invScaleSqr[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; + } +}; + + +/// @brief Compute the closest-point transform to a level set. +/// @return the closest point to the surface from which the level set was derived, +/// in the domain space of the map (e.g., voxel space). +template +struct CPT +{ + // random access version + template static math::Vec3 + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = Vec3; + + // current distance + ValueType d = grid.getValue(ijk); + // compute gradient in physical space where it is a unit normal + // since the grid holds a distance level set. + Vec3d vectorFromSurface(d*Gradient::result(map, grid, ijk)); + if (is_linear::value) { + Vec3d result = ijk.asVec3d() - map.applyInverseMap(vectorFromSurface); + return Vec3Type(result); + } else { + Vec3d location = map.applyMap(ijk.asVec3d()); + Vec3d result = map.applyInverseMap(location - vectorFromSurface); + return Vec3Type(result); + } + } + + // stencil access version + template static math::Vec3 + result(const MapType& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = Vec3; + + // current distance + ValueType d = stencil.template getValue<0, 0, 0>(); + // compute gradient in physical space where it is a unit normal + // since the grid holds a distance level set. + Vec3d vectorFromSurface(d*Gradient::result(map, stencil)); + if (is_linear::value) { + Vec3d result = stencil.getCenterCoord().asVec3d() + - map.applyInverseMap(vectorFromSurface); + return Vec3Type(result); + } else { + Vec3d location = map.applyMap(stencil.getCenterCoord().asVec3d()); + Vec3d result = map.applyInverseMap(location - vectorFromSurface); + return Vec3Type(result); + } + } +}; + + +/// @brief Compute the closest-point transform to a level set. +/// @return the closest point to the surface from which the level set was derived, +/// in the range space of the map (e.g., in world space) +template +struct CPT_RANGE +{ + // random access version + template static Vec3 + result(const MapType& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + using Vec3Type = Vec3; + // current distance + ValueType d = grid.getValue(ijk); + // compute gradient in physical space where it is a unit normal + // since the grid holds a distance level set. + Vec3Type vectorFromSurface = + d*Gradient::result(map, grid, ijk); + Vec3d result = map.applyMap(ijk.asVec3d()) - vectorFromSurface; + + return Vec3Type(result); + } + + // stencil access version + template static Vec3 + result(const MapType& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + using Vec3Type = Vec3; + // current distance + ValueType d = stencil.template getValue<0, 0, 0>(); + // compute gradient in physical space where it is a unit normal + // since the grid holds a distance level set. + Vec3Type vectorFromSurface = + d*Gradient::result(map, stencil); + Vec3d result = map.applyMap(stencil.getCenterCoord().asVec3d()) - vectorFromSurface; + + return Vec3Type(result); + } +}; + + +/// @brief Compute the mean curvature. +/// @details The mean curvature is returned in two parts, @a alpha and @a beta, +/// where @a alpha is the numerator in ∇ · (∇Φ / |∇Φ|) +/// and @a beta is |∇Φ|. +template +struct MeanCurvature +{ + /// @brief Random access version + /// @return @c true if the gradient is nonzero, in which case the mean curvature + /// is returned in two parts, @a alpha and @a beta, where @a alpha is the numerator + /// in ∇ · (∇Φ / |∇Φ|) and @a beta is |∇Φ|. + template + static bool compute(const MapType& map, const Accessor& grid, const Coord& ijk, + double& alpha, double& beta) + { + using ValueType = typename Accessor::ValueType; + + // compute the gradient in index and world space + Vec3d d1_is(static_cast(D1::inX(grid, ijk)), + static_cast(D1::inY(grid, ijk)), + static_cast(D1::inZ(grid, ijk))), d1_ws; + if (is_linear::value) {//resolved at compiletime + d1_ws = map.applyIJT(d1_is); + } else { + d1_ws = map.applyIJT(d1_is, ijk.asVec3d()); + } + const double Dx2 = d1_ws(0)*d1_ws(0); + const double Dy2 = d1_ws(1)*d1_ws(1); + const double Dz2 = d1_ws(2)*d1_ws(2); + const double normGrad = Dx2 + Dy2 + Dz2; + if (normGrad <= math::Tolerance::value()) { + alpha = beta = 0; + return false; + } + + // all the second derivatives in index space + ValueType iddx = D2::inX(grid, ijk); + ValueType iddy = D2::inY(grid, ijk); + ValueType iddz = D2::inZ(grid, ijk); + + ValueType iddxy = D2::inXandY(grid, ijk); + ValueType iddyz = D2::inYandZ(grid, ijk); + ValueType iddxz = D2::inXandZ(grid, ijk); + + // second derivatives in index space + Mat3d d2_is(iddx, iddxy, iddxz, + iddxy, iddy, iddyz, + iddxz, iddyz, iddz); + + // convert second derivatives to world space + Mat3d d2_ws; + if (is_linear::value) {//resolved at compiletime + d2_ws = map.applyIJC(d2_is); + } else { + d2_ws = map.applyIJC(d2_is, d1_is, ijk.asVec3d()); + } + + // assemble the nominator and denominator for mean curvature + alpha = (Dx2*(d2_ws(1,1)+d2_ws(2,2))+Dy2*(d2_ws(0,0)+d2_ws(2,2)) + +Dz2*(d2_ws(0,0)+d2_ws(1,1)) + -2*(d1_ws(0)*(d1_ws(1)*d2_ws(0,1)+d1_ws(2)*d2_ws(0,2)) + +d1_ws(1)*d1_ws(2)*d2_ws(1,2))); + beta = std::sqrt(normGrad); // * 1/dx + return true; + } + + template + static typename Accessor::ValueType result(const MapType& map, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + double alpha, beta; + return compute(map, grid, ijk, alpha, beta) ? + ValueType(alpha/(2. *math::Pow3(beta))) : 0; + } + + template + static typename Accessor::ValueType normGrad(const MapType& map, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + double alpha, beta; + return compute(map, grid, ijk, alpha, beta) ? + ValueType(alpha/(2. *math::Pow2(beta))) : 0; + } + + /// @brief Stencil access version + /// @return @c true if the gradient is nonzero, in which case the mean curvature + /// is returned in two parts, @a alpha and @a beta, where @a alpha is the numerator + /// in ∇ · (∇Φ / |∇Φ|) and @a beta is |∇Φ|. + template + static bool compute(const MapType& map, const StencilT& stencil, + double& alpha, double& beta) + { + using ValueType = typename StencilT::ValueType; + + // compute the gradient in index and world space + Vec3d d1_is(D1::inX(stencil), + D1::inY(stencil), + D1::inZ(stencil) ), d1_ws; + if (is_linear::value) {//resolved at compiletime + d1_ws = map.applyIJT(d1_is); + } else { + d1_ws = map.applyIJT(d1_is, stencil.getCenterCoord().asVec3d()); + } + const double Dx2 = d1_ws(0)*d1_ws(0); + const double Dy2 = d1_ws(1)*d1_ws(1); + const double Dz2 = d1_ws(2)*d1_ws(2); + const double normGrad = Dx2 + Dy2 + Dz2; + if (normGrad <= math::Tolerance::value()) { + alpha = beta = 0; + return false; + } + + // all the second derivatives in index space + ValueType iddx = D2::inX(stencil); + ValueType iddy = D2::inY(stencil); + ValueType iddz = D2::inZ(stencil); + + ValueType iddxy = D2::inXandY(stencil); + ValueType iddyz = D2::inYandZ(stencil); + ValueType iddxz = D2::inXandZ(stencil); + + // second derivatives in index space + Mat3d d2_is(iddx, iddxy, iddxz, + iddxy, iddy, iddyz, + iddxz, iddyz, iddz); + + // convert second derivatives to world space + Mat3d d2_ws; + if (is_linear::value) {//resolved at compiletime + d2_ws = map.applyIJC(d2_is); + } else { + d2_ws = map.applyIJC(d2_is, d1_is, stencil.getCenterCoord().asVec3d()); + } + + // for return + alpha = (Dx2*(d2_ws(1,1)+d2_ws(2,2))+Dy2*(d2_ws(0,0)+d2_ws(2,2)) + +Dz2*(d2_ws(0,0)+d2_ws(1,1)) + -2*(d1_ws(0)*(d1_ws(1)*d2_ws(0,1)+d1_ws(2)*d2_ws(0,2)) + +d1_ws(1)*d1_ws(2)*d2_ws(1,2))); + beta = std::sqrt(normGrad); // * 1/dx + return true; + } + + template + static typename StencilT::ValueType + result(const MapType& map, const StencilT stencil) + { + using ValueType = typename StencilT::ValueType; + double alpha, beta; + return compute(map, stencil, alpha, beta) ? + ValueType(alpha/(2*math::Pow3(beta))) : 0; + } + + template + static typename StencilT::ValueType normGrad(const MapType& map, const StencilT stencil) + { + using ValueType = typename StencilT::ValueType; + double alpha, beta; + return compute(map, stencil, alpha, beta) ? + ValueType(alpha/(2*math::Pow2(beta))) : 0; + } +}; + + +template +struct MeanCurvature +{ + // random access version + template + static typename Accessor::ValueType result(const TranslationMap&, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + return ISMeanCurvature::result(grid, ijk, alpha, beta) ? + ValueType(alpha /(2*math::Pow3(beta))) : 0; + } + + template + static typename Accessor::ValueType normGrad(const TranslationMap&, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + return ISMeanCurvature::result(grid, ijk, alpha, beta) ? + ValueType(alpha/(2*math::Pow2(beta))) : 0; + } + + // stencil access version + template + static typename StencilT::ValueType result(const TranslationMap&, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + return ISMeanCurvature::result(stencil, alpha, beta) ? + ValueType(alpha /(2*math::Pow3(beta))) : 0; + } + + template + static typename StencilT::ValueType normGrad(const TranslationMap&, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + return ISMeanCurvature::result(stencil, alpha, beta) ? + ValueType(alpha/(2*math::Pow2(beta))) : 0; + } +}; + + +template +struct MeanCurvature +{ + // random access version + template + static typename Accessor::ValueType result(const UniformScaleMap& map, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(grid, ijk, alpha, beta)) { + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return ValueType(alpha*inv2dx/math::Pow3(beta)); + } + return 0; + } + + template + static typename Accessor::ValueType normGrad(const UniformScaleMap& map, + const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(grid, ijk, alpha, beta)) { + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ValueType(alpha*invdxdx/(2*math::Pow2(beta))); + } + return 0; + } + + // stencil access version + template + static typename StencilT::ValueType result(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(stencil, alpha, beta)) { + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return ValueType(alpha*inv2dx/math::Pow3(beta)); + } + return 0; + } + + template + static typename StencilT::ValueType normGrad(const UniformScaleMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(stencil, alpha, beta)) { + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ValueType(alpha*invdxdx/(2*math::Pow2(beta))); + } + return 0; + } +}; + + +template +struct MeanCurvature +{ + // random access version + template static typename Accessor::ValueType + result(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(grid, ijk, alpha, beta)) { + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return ValueType(alpha*inv2dx/math::Pow3(beta)); + } + return 0; + } + + template static typename Accessor::ValueType + normGrad(const UniformScaleTranslateMap& map, const Accessor& grid, const Coord& ijk) + { + using ValueType = typename Accessor::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(grid, ijk, alpha, beta)) { + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ValueType(alpha*invdxdx/(2*math::Pow2(beta))); + } + return 0; + } + + // stencil access version + template static typename StencilT::ValueType + result(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(stencil, alpha, beta)) { + ValueType inv2dx = ValueType(map.getInvTwiceScale()[0]); + return ValueType(alpha*inv2dx/math::Pow3(beta)); + } + return 0; + } + + template static typename StencilT::ValueType + normGrad(const UniformScaleTranslateMap& map, const StencilT& stencil) + { + using ValueType = typename StencilT::ValueType; + + ValueType alpha, beta; + if (ISMeanCurvature::result(stencil, alpha, beta)) { + ValueType invdxdx = ValueType(map.getInvScaleSqr()[0]); + return ValueType(alpha*invdxdx/(2*math::Pow2(beta))); + } + return 0; + } +}; + + +/// @brief A wrapper that holds a MapBase::ConstPtr and exposes a reduced set +/// of functionality needed by the mathematical operators +/// @details This may be used in some Map-templated code, when the overhead of +/// actually resolving the @c Map type is large compared to the map work to be done. +class GenericMap +{ +public: + template + GenericMap(const GridType& g): mMap(g.transform().baseMap()) {} + + GenericMap(const Transform& t): mMap(t.baseMap()) {} + GenericMap(MapBase::Ptr map): mMap(ConstPtrCast(map)) {} + GenericMap(MapBase::ConstPtr map): mMap(map) {} + ~GenericMap() {} + + Vec3d applyMap(const Vec3d& in) const { return mMap->applyMap(in); } + Vec3d applyInverseMap(const Vec3d& in) const { return mMap->applyInverseMap(in); } + + Vec3d applyIJT(const Vec3d& in) const { return mMap->applyIJT(in); } + Vec3d applyIJT(const Vec3d& in, const Vec3d& pos) const { return mMap->applyIJT(in, pos); } + Mat3d applyIJC(const Mat3d& m) const { return mMap->applyIJC(m); } + Mat3d applyIJC(const Mat3d& m, const Vec3d& v, const Vec3d& pos) const + { return mMap->applyIJC(m,v,pos); } + + double determinant() const { return mMap->determinant(); } + double determinant(const Vec3d& in) const { return mMap->determinant(in); } + + Vec3d voxelSize() const { return mMap->voxelSize(); } + Vec3d voxelSize(const Vec3d&v) const { return mMap->voxelSize(v); } + +private: + MapBase::ConstPtr mMap; +}; + +} // end math namespace +} // namespace OPENVDB_VERSION_NAME +} // end openvdb namespace + +#endif // OPENVDB_MATH_OPERATORS_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Proximity.cc b/openvdb/math/Proximity.cc new file mode 100644 index 00000000..d52bdc37 --- /dev/null +++ b/openvdb/math/Proximity.cc @@ -0,0 +1,131 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Proximity.h" + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + + +OPENVDB_API Vec3d +closestPointOnTriangleToPoint( + const Vec3d& a, const Vec3d& b, const Vec3d& c, const Vec3d& p, Vec3d& uvw) +{ + uvw.setZero(); + + // degenerate triangle, singular + if ((isApproxEqual(a, b) && isApproxEqual(a, c))) { + uvw[0] = 1.0; + return a; + } + + Vec3d ab = b - a, ac = c - a, ap = p - a; + double d1 = ab.dot(ap), d2 = ac.dot(ap); + + // degenerate triangle edges + if (isApproxEqual(a, b)) { + + double t = 0.0; + Vec3d cp = closestPointOnSegmentToPoint(a, c, p, t); + + uvw[0] = 1.0 - t; + uvw[2] = t; + + return cp; + + } else if (isApproxEqual(a, c) || isApproxEqual(b, c)) { + + double t = 0.0; + Vec3d cp = closestPointOnSegmentToPoint(a, b, p, t); + uvw[0] = 1.0 - t; + uvw[1] = t; + return cp; + } + + if (d1 <= 0.0 && d2 <= 0.0) { + uvw[0] = 1.0; + return a; // barycentric coordinates (1,0,0) + } + + // Check if P in vertex region outside B + Vec3d bp = p - b; + double d3 = ab.dot(bp), d4 = ac.dot(bp); + if (d3 >= 0.0 && d4 <= d3) { + uvw[1] = 1.0; + return b; // barycentric coordinates (0,1,0) + } + + // Check if P in edge region of AB, if so return projection of P onto AB + double vc = d1 * d4 - d3 * d2; + if (vc <= 0.0 && d1 >= 0.0 && d3 <= 0.0) { + uvw[1] = d1 / (d1 - d3); + uvw[0] = 1.0 - uvw[1]; + return a + uvw[1] * ab; // barycentric coordinates (1-v,v,0) + } + + // Check if P in vertex region outside C + Vec3d cp = p - c; + double d5 = ab.dot(cp), d6 = ac.dot(cp); + if (d6 >= 0.0 && d5 <= d6) { + uvw[2] = 1.0; + return c; // barycentric coordinates (0,0,1) + } + + // Check if P in edge region of AC, if so return projection of P onto AC + double vb = d5 * d2 - d1 * d6; + if (vb <= 0.0 && d2 >= 0.0 && d6 <= 0.0) { + uvw[2] = d2 / (d2 - d6); + uvw[0] = 1.0 - uvw[2]; + return a + uvw[2] * ac; // barycentric coordinates (1-w,0,w) + } + + // Check if P in edge region of BC, if so return projection of P onto BC + double va = d3*d6 - d5*d4; + if (va <= 0.0 && (d4 - d3) >= 0.0 && (d5 - d6) >= 0.0) { + uvw[2] = (d4 - d3) / ((d4 - d3) + (d5 - d6)); + uvw[1] = 1.0 - uvw[2]; + return b + uvw[2] * (c - b); // barycentric coordinates (0,1-w,w) + } + + // P inside face region. Compute Q through its barycentric coordinates (u,v,w) + double denom = 1.0 / (va + vb + vc); + uvw[2] = vc * denom; + uvw[1] = vb * denom; + uvw[0] = 1.0 - uvw[1] - uvw[2]; + + return a + ab*uvw[1] + ac*uvw[2]; // = u*a + v*b + w*c , u= va*denom = 1.0-v-w +} + + +OPENVDB_API Vec3d +closestPointOnSegmentToPoint(const Vec3d& a, const Vec3d& b, const Vec3d& p, double& t) +{ + Vec3d ab = b - a; + t = (p - a).dot(ab); + + if (t <= 0.0) { + // c projects outside the [a,b] interval, on the a side. + t = 0.0; + return a; + } else { + + // always nonnegative since denom = ||ab||^2 + double denom = ab.dot(ab); + + if (t >= denom) { + // c projects outside the [a,b] interval, on the b side. + t = 1.0; + return b; + } else { + // c projects inside the [a,b] interval. + t = t / denom; + return a + (ab * t); + } + } +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/math/Proximity.h b/openvdb/math/Proximity.h new file mode 100644 index 00000000..8206d4fc --- /dev/null +++ b/openvdb/math/Proximity.h @@ -0,0 +1,48 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_PROXIMITY_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_PROXIMITY_HAS_BEEN_INCLUDED + +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief Closest Point on Triangle to Point. Given a triangle @c abc and a point @c p, +/// return the point on @c abc closest to @c p and the corresponding barycentric coordinates. +/// +/// @details Algorithms from "Real-Time Collision Detection" pg 136 to 142 by Christer Ericson. +/// The closest point is obtained by first determining which of the triangles' +/// Voronoi feature regions @c p is in and then computing the orthogonal projection +/// of @c p onto the corresponding feature. +/// +/// @param a The triangle's first vertex point. +/// @param b The triangle's second vertex point. +/// @param c The triangle's third vertex point. +/// @param p Point to compute the closest point on @c abc for. +/// @param uvw Barycentric coordinates, computed and returned. +OPENVDB_API Vec3d +closestPointOnTriangleToPoint( + const Vec3d& a, const Vec3d& b, const Vec3d& c, const Vec3d& p, Vec3d& uvw); + + +/// @brief Closest Point on Line Segment to Point. Given segment @c ab and point @c p, +/// return the point on @c ab closest to @c p and @c t the parametric distance to @c b. +/// +/// @param a The segment's first vertex point. +/// @param b The segment's second vertex point. +/// @param p Point to compute the closest point on @c ab for. +/// @param t Parametric distance to @c b. +OPENVDB_API Vec3d +closestPointOnSegmentToPoint( + const Vec3d& a, const Vec3d& b, const Vec3d& p, double& t); + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_MESH_TO_VOLUME_UTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/math/QuantizedUnitVec.cc b/openvdb/math/QuantizedUnitVec.cc new file mode 100644 index 00000000..b3b36b6e --- /dev/null +++ b/openvdb/math/QuantizedUnitVec.cc @@ -0,0 +1,2082 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "QuantizedUnitVec.h" + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +// The table below is generated as follows: +// +// uint16_t xbits, ybits; +// double x, y, z, w; +// for (uint16_t b = 0; b < 8192; ++b) { +// xbits = uint16_t((b & MASK_XSLOT) >> 7); +// ybits = b & MASK_YSLOT; +// if ((xbits + ybits) > 126) { +// xbits = uint16_t(127 - xbits); +// ybits = uint16_t(127 - ybits); +// } +// x = double(xbits); +// y = double(ybits); +// z = double(126 - xbits - ybits); +// w = 1.0 / std::sqrt(x*x + y*y + z*z); +// sNormalizationWeights[b] = float(w); +// } + +float QuantizedUnitVec::sNormalizationWeights[8192] = { + 0.007936508395f, 0.007999744266f, 0.008063467219f, 0.008127664216f, + 0.008192319423f, 0.008257416077f, 0.008322936483f, 0.008388860151f, + 0.008455166593f, 0.008521833457f, 0.008588834666f, 0.008656143211f, + 0.008723732084f, 0.00879156962f, 0.008859624155f, 0.008927859366f, + 0.008996240795f, 0.009064726532f, 0.009133277461f, 0.009201847948f, + 0.00927039329f, 0.009338863194f, 0.009407208301f, 0.009475374594f, + 0.009543305263f, 0.009610942565f, 0.009678225033f, 0.009745089337f, + 0.009811468422f, 0.009877296165f, 0.009942499921f, 0.01000700705f, + 0.01007074397f, 0.01013363153f, 0.01019559242f, 0.01025654469f, + 0.01031640731f, 0.01037509646f, 0.01043252647f, 0.01048861258f, + 0.01054326911f, 0.01059640758f, 0.01064794231f, 0.01069778763f, + 0.01074585691f, 0.01079206541f, 0.01083632838f, 0.01087856572f, + 0.01091869641f, 0.01095664315f, 0.01099232957f, 0.01102568675f, + 0.01105664484f, 0.01108513959f, 0.01111111138f, 0.01113450434f, + 0.01115526911f, 0.01117335912f, 0.01118873432f, 0.01120136213f, + 0.01121121366f, 0.01121826563f, 0.01122250315f, 0.0112239169f, + 0.01122250315f, 0.01121826563f, 0.01121121366f, 0.01120136213f, + 0.01118873432f, 0.01117335912f, 0.01115526911f, 0.01113450434f, + 0.01111111138f, 0.01108513959f, 0.01105664484f, 0.01102568675f, + 0.01099232957f, 0.01095664315f, 0.01091869641f, 0.01087856572f, + 0.01083632838f, 0.01079206541f, 0.01074585691f, 0.01069778763f, + 0.01064794231f, 0.01059640758f, 0.01054326911f, 0.01048861258f, + 0.01043252647f, 0.01037509646f, 0.01031640731f, 0.01025654469f, + 0.01019559242f, 0.01013363153f, 0.01007074397f, 0.01000700705f, + 0.009942499921f, 0.009877296165f, 0.009811468422f, 0.009745089337f, + 0.009678225033f, 0.009610942565f, 0.009543305263f, 0.009475374594f, + 0.009407208301f, 0.009338863194f, 0.00927039329f, 0.009201847948f, + 0.009133277461f, 0.009064726532f, 0.008996240795f, 0.008927859366f, + 0.008859624155f, 0.00879156962f, 0.008723732084f, 0.008656143211f, + 0.008588834666f, 0.008521833457f, 0.008455166593f, 0.008388860151f, + 0.008322936483f, 0.008257416077f, 0.008192319423f, 0.008127664216f, + 0.008063467219f, 0.007999744266f, 0.007936508395f, 0.007873771712f, + 0.007999744266f, 0.008063991554f, 0.008128738031f, 0.008193968795f, + 0.008259668946f, 0.008325820789f, 0.008392404765f, 0.008459401317f, + 0.008526788093f, 0.00859454181f, 0.008662636392f, 0.008731043898f, + 0.008799735457f, 0.008868678473f, 0.008937839419f, 0.009007181972f, + 0.00907666795f, 0.009146256372f, 0.009215905331f, 0.009285567328f, + 0.009355195798f, 0.009424740449f, 0.009494146332f, 0.009563359432f, + 0.009632320143f, 0.009700968862f, 0.009769240394f, 0.00983707048f, + 0.00990438927f, 0.009971125983f, 0.01003720704f, 0.01010255609f, + 0.01016709674f, 0.01023074798f, 0.01029342785f, 0.01035505254f, + 0.01041553635f, 0.01047479361f, 0.01053273678f, 0.01058927551f, + 0.01064432319f, 0.01069778763f, 0.01074958127f, 0.01079961471f, + 0.01084779948f, 0.01089404803f, 0.01093827467f, 0.0109803956f, + 0.01102032885f, 0.01105799619f, 0.01109332126f, 0.0111262314f, + 0.01115665678f, 0.01118453499f, 0.01120980456f, 0.01123241056f, + 0.01125230361f, 0.01126943901f, 0.01128377859f, 0.01129528973f, + 0.01130394638f, 0.01130972803f, 0.01131262258f, 0.01131262258f, + 0.01130972803f, 0.01130394638f, 0.01129528973f, 0.01128377859f, + 0.01126943901f, 0.01125230361f, 0.01123241056f, 0.01120980456f, + 0.01118453499f, 0.01115665678f, 0.0111262314f, 0.01109332126f, + 0.01105799619f, 0.01102032885f, 0.0109803956f, 0.01093827467f, + 0.01089404803f, 0.01084779948f, 0.01079961471f, 0.01074958127f, + 0.01069778763f, 0.01064432319f, 0.01058927551f, 0.01053273678f, + 0.01047479361f, 0.01041553635f, 0.01035505254f, 0.01029342785f, + 0.01023074798f, 0.01016709674f, 0.01010255609f, 0.01003720704f, + 0.009971125983f, 0.00990438927f, 0.00983707048f, 0.009769240394f, + 0.009700968862f, 0.009632320143f, 0.009563359432f, 0.009494146332f, + 0.009424740449f, 0.009355195798f, 0.009285567328f, 0.009215905331f, + 0.009146256372f, 0.00907666795f, 0.009007181972f, 0.008937839419f, + 0.008868678473f, 0.008799735457f, 0.008731043898f, 0.008662636392f, + 0.00859454181f, 0.008526788093f, 0.008459401317f, 0.008392404765f, + 0.008325820789f, 0.008259668946f, 0.008193968795f, 0.008128738031f, + 0.008063991554f, 0.007999744266f, 0.007936008275f, 0.007936508395f, + 0.008063467219f, 0.008128738031f, 0.008194519207f, 0.008260795847f, + 0.008327552117f, 0.008394770324f, 0.008462429978f, 0.008530510589f, + 0.008598989807f, 0.008667841554f, 0.008737040684f, 0.008806557395f, + 0.008876360953f, 0.008946419694f, 0.009016696364f, 0.009087154642f, + 0.009157754481f, 0.009228453971f, 0.009299207479f, 0.009369968437f, + 0.009440686554f, 0.009511308745f, 0.009581780061f, 0.00965204183f, + 0.009722034447f, 0.009791694582f, 0.009860955179f, 0.009929747321f, + 0.009998000227f, 0.01006564032f, 0.01013259124f, 0.01019877382f, + 0.01026410609f, 0.01032850612f, 0.01039188914f, 0.01045416761f, + 0.01051525306f, 0.01057505608f, 0.01063348539f, 0.01069044974f, + 0.01074585691f, 0.01079961471f, 0.01085163094f, 0.0109018134f, + 0.01095007174f, 0.01099631656f, 0.01104046032f, 0.0110824164f, + 0.01112210099f, 0.01115943585f, 0.01119434182f, 0.01122674625f, + 0.01125658024f, 0.01128377859f, 0.01130828168f, 0.01133003552f, + 0.01134899072f, 0.01136510447f, 0.01137833856f, 0.01138866507f, + 0.0113960579f, 0.01140050031f, 0.01140198205f, 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0.01231288072f, + 0.01237494871f, 0.01243411843f, 0.01249024551f, 0.0125431912f, + 0.01259282045f, 0.01263900381f, 0.0126816174f, 0.01272054669f, + 0.01275568269f, 0.0127869295f, 0.01281419583f, 0.01283740439f, + 0.01285648718f, 0.01287138835f, 0.01288206317f, 0.01288848184f, + 0.01289062295f, 0.01288848184f, 0.01288206317f, 0.01287138835f, + 0.01285648718f, 0.01283740439f, 0.01281419583f, 0.0127869295f, + 0.01275568269f, 0.01272054669f, 0.0126816174f, 0.01263900381f, + 0.01259282045f, 0.0125431912f, 0.01249024551f, 0.01243411843f, + 0.01237494871f, 0.01231288072f, 0.0122480616f, 0.0121806385f, + 0.01211076323f, 0.01203858573f, 0.01196425594f, 0.01188792568f, + 0.01180974208f, 0.0117298523f, 0.01164839976f, 0.01156552508f, + 0.01148136612f, 0.0113960579f, 0.01130972803f, 0.01122250315f +}; + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/math/QuantizedUnitVec.h b/openvdb/math/QuantizedUnitVec.h new file mode 100644 index 00000000..9163fab7 --- /dev/null +++ b/openvdb/math/QuantizedUnitVec.h @@ -0,0 +1,121 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_QUANTIZED_UNIT_VEC_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_QUANTIZED_UNIT_VEC_HAS_BEEN_INCLUDED + +#include +#include +#include "Vec3.h" + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief Unit vector occupying only 16 bits +/// @details Stores two quantized components. Based on the +/// "Higher Accuracy Quantized Normals" article from GameDev.Net LLC, 2000 +class OPENVDB_API QuantizedUnitVec +{ +public: + template static uint16_t pack(const Vec3& vec); + static Vec3s unpack(const uint16_t data); + + static void flipSignBits(uint16_t&); + +private: + QuantizedUnitVec() {} + + // bit masks + static const uint16_t MASK_SLOTS = 0x1FFF; // 0001111111111111 + static const uint16_t MASK_XSLOT = 0x1F80; // 0001111110000000 + static const uint16_t MASK_YSLOT = 0x007F; // 0000000001111111 + static const uint16_t MASK_XSIGN = 0x8000; // 1000000000000000 + static const uint16_t MASK_YSIGN = 0x4000; // 0100000000000000 + static const uint16_t MASK_ZSIGN = 0x2000; // 0010000000000000 + + // normalization weights, 32 kilobytes. + static float sNormalizationWeights[MASK_SLOTS + 1]; +}; // class QuantizedUnitVec + + +//////////////////////////////////////// + + +template +inline uint16_t +QuantizedUnitVec::pack(const Vec3& vec) +{ + if (math::isZero(vec)) return 0; + + uint16_t data = 0; + T x(vec[0]), y(vec[1]), z(vec[2]); + + // The sign of the three components are first stored using + // 3-bits and can then safely be discarded. + if (x < T(0.0)) { data |= MASK_XSIGN; x = -x; } + if (y < T(0.0)) { data |= MASK_YSIGN; y = -y; } + if (z < T(0.0)) { data |= MASK_ZSIGN; z = -z; } + + // The z component is discarded and x & y are quantized in + // the 0 to 126 range. + T w = T(126.0) / (x + y + z); + uint16_t xbits = static_cast((x * w)); + uint16_t ybits = static_cast((y * w)); + + // The remaining 13 bits in our 16 bit word are dividied into a + // 6-bit x-slot and a 7-bit y-slot. Both the xbits and the ybits + // can still be represented using (2^7 - 1) quantization levels. + + // If the xbits requre more than 6-bits, store the complement. + // (xbits + ybits < 127, thus if xbits > 63 => ybits <= 63) + if (xbits > 63) { + xbits = static_cast(127 - xbits); + ybits = static_cast(127 - ybits); + } + + // Pack components into their respective slots. + data = static_cast(data | (xbits << 7)); + data = static_cast(data | ybits); + return data; +} + + +inline Vec3s +QuantizedUnitVec::unpack(const uint16_t data) +{ + const float w = sNormalizationWeights[data & MASK_SLOTS]; + + uint16_t xbits = static_cast((data & MASK_XSLOT) >> 7); + uint16_t ybits = static_cast(data & MASK_YSLOT); + + // Check if the complement components where stored and revert. + if ((xbits + ybits) > 126) { + xbits = static_cast(127 - xbits); + ybits = static_cast(127 - ybits); + } + + Vec3s vec(float(xbits) * w, float(ybits) * w, float(126 - xbits - ybits) * w); + + if (data & MASK_XSIGN) vec[0] = -vec[0]; + if (data & MASK_YSIGN) vec[1] = -vec[1]; + if (data & MASK_ZSIGN) vec[2] = -vec[2]; + return vec; +} + + +//////////////////////////////////////// + + +inline void +QuantizedUnitVec::flipSignBits(uint16_t& v) +{ + v = static_cast((v & MASK_SLOTS) | (~v & ~MASK_SLOTS)); +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_QUANTIZED_UNIT_VEC_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Quat.h b/openvdb/math/Quat.h new file mode 100644 index 00000000..4f6a3e96 --- /dev/null +++ b/openvdb/math/Quat.h @@ -0,0 +1,631 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_QUAT_H_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_QUAT_H_HAS_BEEN_INCLUDED + +#include "Mat.h" +#include "Mat3.h" +#include "Math.h" +#include "Vec3.h" +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Quat; + +/// Linear interpolation between the two quaternions +template +Quat slerp(const Quat &q1, const Quat &q2, T t, T tolerance=0.00001) +{ + T qdot, angle, sineAngle; + + qdot = q1.dot(q2); + + if (fabs(qdot) >= 1.0) { + angle = 0; // not necessary but suppresses compiler warning + sineAngle = 0; + } else { + angle = acos(qdot); + sineAngle = sin(angle); + } + + // + // Denominator close to 0 corresponds to the case where the + // two quaternions are close to the same rotation. In this + // case linear interpolation is used but we normalize to + // guarantee unit length + // + if (sineAngle <= tolerance) { + T s = 1.0 - t; + + Quat qtemp(s * q1[0] + t * q2[0], s * q1[1] + t * q2[1], + s * q1[2] + t * q2[2], s * q1[3] + t * q2[3]); + // + // Check the case where two close to antipodal quaternions were + // blended resulting in a nearly zero result which can happen, + // for example, if t is close to 0.5. In this case it is not safe + // to project back onto the sphere. + // + double lengthSquared = qtemp.dot(qtemp); + + if (lengthSquared <= tolerance * tolerance) { + qtemp = (t < 0.5) ? q1 : q2; + } else { + qtemp *= 1.0 / sqrt(lengthSquared); + } + return qtemp; + } else { + + T sine = 1.0 / sineAngle; + T a = sin((1.0 - t) * angle) * sine; + T b = sin(t * angle) * sine; + return Quat(a * q1[0] + b * q2[0], a * q1[1] + b * q2[1], + a * q1[2] + b * q2[2], a * q1[3] + b * q2[3]); + } + +} + +template +class Quat +{ +public: + using value_type = T; + using ValueType = T; + static const int size = 4; + + /// Trivial constructor, the quaternion is NOT initialized + Quat() {} + + /// Constructor with four arguments, e.g. Quatf q(1,2,3,4); + Quat(T x, T y, T z, T w) + { + mm[0] = x; + mm[1] = y; + mm[2] = z; + mm[3] = w; + + } + + /// Constructor with array argument, e.g. float a[4]; Quatf q(a); + Quat(T *a) + { + mm[0] = a[0]; + mm[1] = a[1]; + mm[2] = a[2]; + mm[3] = a[3]; + + } + + /// Constructor given rotation as axis and angle, the axis must be + /// unit vector + Quat(const Vec3 &axis, T angle) + { + // assert( REL_EQ(axis.length(), 1.) ); + + T s = T(sin(angle*T(0.5))); + + mm[0] = axis.x() * s; + mm[1] = axis.y() * s; + mm[2] = axis.z() * s; + + mm[3] = T(cos(angle*T(0.5))); + + } + + /// Constructor given rotation as axis and angle + Quat(math::Axis axis, T angle) + { + T s = T(sin(angle*T(0.5))); + + mm[0] = (axis==math::X_AXIS) * s; + mm[1] = (axis==math::Y_AXIS) * s; + mm[2] = (axis==math::Z_AXIS) * s; + + mm[3] = T(cos(angle*T(0.5))); + } + + /// Constructor given a rotation matrix + template + Quat(const Mat3 &rot) { + + // verify that the matrix is really a rotation + if(!isUnitary(rot)) { // unitary is reflection or rotation + OPENVDB_THROW(ArithmeticError, + "A non-rotation matrix can not be used to construct a quaternion"); + } + if (!isApproxEqual(rot.det(), T1(1))) { // rule out reflection + OPENVDB_THROW(ArithmeticError, + "A reflection matrix can not be used to construct a quaternion"); + } + + T trace(rot.trace()); + if (trace > 0) { + + T q_w = 0.5 * std::sqrt(trace+1); + T factor = 0.25 / q_w; + + mm[0] = factor * (rot(1,2) - rot(2,1)); + mm[1] = factor * (rot(2,0) - rot(0,2)); + mm[2] = factor * (rot(0,1) - rot(1,0)); + mm[3] = q_w; + } else if (rot(0,0) > rot(1,1) && rot(0,0) > rot(2,2)) { + + T q_x = 0.5 * sqrt(rot(0,0)- rot(1,1)-rot(2,2)+1); + T factor = 0.25 / q_x; + + mm[0] = q_x; + mm[1] = factor * (rot(0,1) + rot(1,0)); + mm[2] = factor * (rot(2,0) + rot(0,2)); + mm[3] = factor * (rot(1,2) - rot(2,1)); + } else if (rot(1,1) > rot(2,2)) { + + T q_y = 0.5 * sqrt(rot(1,1)-rot(0,0)-rot(2,2)+1); + T factor = 0.25 / q_y; + + mm[0] = factor * (rot(0,1) + rot(1,0)); + mm[1] = q_y; + mm[2] = factor * (rot(1,2) + rot(2,1)); + mm[3] = factor * (rot(2,0) - rot(0,2)); + } else { + + T q_z = 0.5 * sqrt(rot(2,2)-rot(0,0)-rot(1,1)+1); + T factor = 0.25 / q_z; + + mm[0] = factor * (rot(2,0) + rot(0,2)); + mm[1] = factor * (rot(1,2) + rot(2,1)); + mm[2] = q_z; + mm[3] = factor * (rot(0,1) - rot(1,0)); + } + } + + /// Copy constructor + Quat(const Quat &q) + { + mm[0] = q.mm[0]; + mm[1] = q.mm[1]; + mm[2] = q.mm[2]; + mm[3] = q.mm[3]; + + } + + /// Reference to the component, e.g. q.x() = 4.5f; + T& x() { return mm[0]; } + T& y() { return mm[1]; } + T& z() { return mm[2]; } + T& w() { return mm[3]; } + + /// Get the component, e.g. float f = q.w(); + T x() const { return mm[0]; } + T y() const { return mm[1]; } + T z() const { return mm[2]; } + T w() const { return mm[3]; } + + // Number of elements + static unsigned numElements() { return 4; } + + /// Array style reference to the components, e.g. q[3] = 1.34f; + T& operator[](int i) { return mm[i]; } + + /// Array style constant reference to the components, e.g. float f = q[1]; + T operator[](int i) const { return mm[i]; } + + /// Cast to T* + operator T*() { return mm; } + operator const T*() const { return mm; } + + /// Alternative indexed reference to the elements + T& operator()(int i) { return mm[i]; } + + /// Alternative indexed constant reference to the elements, + T operator()(int i) const { return mm[i]; } + + /// Return angle of rotation + T angle() const + { + T sqrLength = mm[0]*mm[0] + mm[1]*mm[1] + mm[2]*mm[2]; + + if ( sqrLength > 1.0e-8 ) { + + return T(T(2.0) * acos(mm[3])); + + } else { + + return T(0.0); + } + } + + /// Return axis of rotation + Vec3 axis() const + { + T sqrLength = mm[0]*mm[0] + mm[1]*mm[1] + mm[2]*mm[2]; + + if ( sqrLength > 1.0e-8 ) { + + T invLength = T(T(1)/sqrt(sqrLength)); + + return Vec3( mm[0]*invLength, mm[1]*invLength, mm[2]*invLength ); + } else { + + return Vec3(1,0,0); + } + } + + + /// "this" quaternion gets initialized to [x, y, z, w] + Quat& init(T x, T y, T z, T w) + { + mm[0] = x; mm[1] = y; mm[2] = z; mm[3] = w; + return *this; + } + + /// "this" quaternion gets initialized to identity, same as setIdentity() + Quat& init() { return setIdentity(); } + + /// Set "this" quaternion to rotation specified by axis and angle, + /// the axis must be unit vector + Quat& setAxisAngle(const Vec3& axis, T angle) + { + + T s = T(sin(angle*T(0.5))); + + mm[0] = axis.x() * s; + mm[1] = axis.y() * s; + mm[2] = axis.z() * s; + + mm[3] = T(cos(angle*T(0.5))); + + return *this; + } // axisAngleTest + + /// Set "this" vector to zero + Quat& setZero() + { + mm[0] = mm[1] = mm[2] = mm[3] = 0; + return *this; + } + + /// Set "this" vector to identity + Quat& setIdentity() + { + mm[0] = mm[1] = mm[2] = 0; + mm[3] = 1; + return *this; + } + + /// Returns vector of x,y,z rotational components + Vec3 eulerAngles(RotationOrder rotationOrder) const + { return math::eulerAngles(Mat3(*this), rotationOrder); } + + /// Assignment operator + Quat& operator=(const Quat &q) + { + mm[0] = q.mm[0]; + mm[1] = q.mm[1]; + mm[2] = q.mm[2]; + mm[3] = q.mm[3]; + + return *this; + } + + /// Equality operator, does exact floating point comparisons + bool operator==(const Quat &q) const + { + return (isExactlyEqual(mm[0],q.mm[0]) && + isExactlyEqual(mm[1],q.mm[1]) && + isExactlyEqual(mm[2],q.mm[2]) && + isExactlyEqual(mm[3],q.mm[3]) ); + } + + /// Test if "this" is equivalent to q with tolerance of eps value + bool eq(const Quat &q, T eps=1.0e-7) const + { + return isApproxEqual(mm[0],q.mm[0],eps) && isApproxEqual(mm[1],q.mm[1],eps) && + isApproxEqual(mm[2],q.mm[2],eps) && isApproxEqual(mm[3],q.mm[3],eps) ; + } // trivial + + /// Add quaternion q to "this" quaternion, e.g. q += q1; + Quat& operator+=(const Quat &q) + { + mm[0] += q.mm[0]; + mm[1] += q.mm[1]; + mm[2] += q.mm[2]; + mm[3] += q.mm[3]; + + return *this; + } + + /// Subtract quaternion q from "this" quaternion, e.g. q -= q1; + Quat& operator-=(const Quat &q) + { + mm[0] -= q.mm[0]; + mm[1] -= q.mm[1]; + mm[2] -= q.mm[2]; + mm[3] -= q.mm[3]; + + return *this; + } + + /// Scale "this" quaternion by scalar, e.g. q *= scalar; + Quat& operator*=(T scalar) + { + mm[0] *= scalar; + mm[1] *= scalar; + mm[2] *= scalar; + mm[3] *= scalar; + + return *this; + } + + /// Return (this+q), e.g. q = q1 + q2; + Quat operator+(const Quat &q) const + { + return Quat(mm[0]+q.mm[0], mm[1]+q.mm[1], mm[2]+q.mm[2], mm[3]+q.mm[3]); + } + + /// Return (this-q), e.g. q = q1 - q2; + Quat operator-(const Quat &q) const + { + return Quat(mm[0]-q.mm[0], mm[1]-q.mm[1], mm[2]-q.mm[2], mm[3]-q.mm[3]); + } + + /// Return (this*q), e.g. q = q1 * q2; + Quat operator*(const Quat &q) const + { + Quat prod; + + prod.mm[0] = mm[3]*q.mm[0] + mm[0]*q.mm[3] + mm[1]*q.mm[2] - mm[2]*q.mm[1]; + prod.mm[1] = mm[3]*q.mm[1] + mm[1]*q.mm[3] + mm[2]*q.mm[0] - mm[0]*q.mm[2]; + prod.mm[2] = mm[3]*q.mm[2] + mm[2]*q.mm[3] + mm[0]*q.mm[1] - mm[1]*q.mm[0]; + prod.mm[3] = mm[3]*q.mm[3] - mm[0]*q.mm[0] - mm[1]*q.mm[1] - mm[2]*q.mm[2]; + + return prod; + + } + + /// Assigns this to (this*q), e.g. q *= q1; + Quat operator*=(const Quat &q) + { + *this = *this * q; + return *this; + } + + /// Return (this*scalar), e.g. q = q1 * scalar; + Quat operator*(T scalar) const + { + return Quat(mm[0]*scalar, mm[1]*scalar, mm[2]*scalar, mm[3]*scalar); + } + + /// Return (this/scalar), e.g. q = q1 / scalar; + Quat operator/(T scalar) const + { + return Quat(mm[0]/scalar, mm[1]/scalar, mm[2]/scalar, mm[3]/scalar); + } + + /// Negation operator, e.g. q = -q; + Quat operator-() const + { return Quat(-mm[0], -mm[1], -mm[2], -mm[3]); } + + /// this = q1 + q2 + /// "this", q1 and q2 need not be distinct objects, e.g. q.add(q1,q); + Quat& add(const Quat &q1, const Quat &q2) + { + mm[0] = q1.mm[0] + q2.mm[0]; + mm[1] = q1.mm[1] + q2.mm[1]; + mm[2] = q1.mm[2] + q2.mm[2]; + mm[3] = q1.mm[3] + q2.mm[3]; + + return *this; + } + + /// this = q1 - q2 + /// "this", q1 and q2 need not be distinct objects, e.g. q.sub(q1,q); + Quat& sub(const Quat &q1, const Quat &q2) + { + mm[0] = q1.mm[0] - q2.mm[0]; + mm[1] = q1.mm[1] - q2.mm[1]; + mm[2] = q1.mm[2] - q2.mm[2]; + mm[3] = q1.mm[3] - q2.mm[3]; + + return *this; + } + + /// this = q1 * q2 + /// q1 and q2 must be distinct objects than "this", e.g. q.mult(q1,q2); + Quat& mult(const Quat &q1, const Quat &q2) + { + mm[0] = q1.mm[3]*q2.mm[0] + q1.mm[0]*q2.mm[3] + + q1.mm[1]*q2.mm[2] - q1.mm[2]*q2.mm[1]; + mm[1] = q1.mm[3]*q2.mm[1] + q1.mm[1]*q2.mm[3] + + q1.mm[2]*q2.mm[0] - q1.mm[0]*q2.mm[2]; + mm[2] = q1.mm[3]*q2.mm[2] + q1.mm[2]*q2.mm[3] + + q1.mm[0]*q2.mm[1] - q1.mm[1]*q2.mm[0]; + mm[3] = q1.mm[3]*q2.mm[3] - q1.mm[0]*q2.mm[0] - + q1.mm[1]*q2.mm[1] - q1.mm[2]*q2.mm[2]; + + return *this; + } + + /// this = scalar*q, q need not be distinct object than "this", + /// e.g. q.scale(1.5,q1); + Quat& scale(T scale, const Quat &q) + { + mm[0] = scale * q.mm[0]; + mm[1] = scale * q.mm[1]; + mm[2] = scale * q.mm[2]; + mm[3] = scale * q.mm[3]; + + return *this; + } + + /// Dot product + T dot(const Quat &q) const + { + return (mm[0]*q.mm[0] + mm[1]*q.mm[1] + mm[2]*q.mm[2] + mm[3]*q.mm[3]); + } + + /// Return the quaternion rate corrsponding to the angular velocity omega + /// and "this" current rotation + Quat derivative(const Vec3& omega) const + { + return Quat( +w()*omega.x() -z()*omega.y() +y()*omega.z() , + +z()*omega.x() +w()*omega.y() -x()*omega.z() , + -y()*omega.x() +x()*omega.y() +w()*omega.z() , + -x()*omega.x() -y()*omega.y() -z()*omega.z() ); + } + + /// this = normalized this + bool normalize(T eps = T(1.0e-8)) + { + T d = T(sqrt(mm[0]*mm[0] + mm[1]*mm[1] + mm[2]*mm[2] + mm[3]*mm[3])); + if( isApproxEqual(d, T(0.0), eps) ) return false; + *this *= ( T(1)/d ); + return true; + } + + /// this = normalized this + Quat unit() const + { + T d = sqrt(mm[0]*mm[0] + mm[1]*mm[1] + mm[2]*mm[2] + mm[3]*mm[3]); + if( isExactlyEqual(d , T(0.0) ) ) + OPENVDB_THROW(ArithmeticError, + "Normalizing degenerate quaternion"); + return *this / d; + } + + /// returns inverse of this + Quat inverse(T tolerance = T(0)) + { + T d = mm[0]*mm[0] + mm[1]*mm[1] + mm[2]*mm[2] + mm[3]*mm[3]; + if( isApproxEqual(d, T(0.0), tolerance) ) + OPENVDB_THROW(ArithmeticError, + "Cannot invert degenerate quaternion"); + Quat result = *this/-d; + result.mm[3] = -result.mm[3]; + return result; + } + + + /// Return the conjugate of "this", same as invert without + /// unit quaternion test + Quat conjugate() const + { + return Quat(-mm[0], -mm[1], -mm[2], mm[3]); + } + + /// Return rotated vector by "this" quaternion + Vec3 rotateVector(const Vec3 &v) const + { + Mat3 m(*this); + return m.transform(v); + } + + /// Predefined constants, e.g. Quat q = Quat::identity(); + static Quat zero() { return Quat(0,0,0,0); } + static Quat identity() { return Quat(0,0,0,1); } + + /// @return string representation of Classname + std::string str() const + { + std::ostringstream buffer; + + buffer << "["; + + // For each column + for (unsigned j(0); j < 4; j++) { + if (j) buffer << ", "; + buffer << mm[j]; + } + + buffer << "]"; + + return buffer.str(); + } + + /// Output to the stream, e.g. std::cout << q << std::endl; + friend std::ostream& operator<<(std::ostream &stream, const Quat &q) + { + stream << q.str(); + return stream; + } + + friend Quat slerp<>(const Quat &q1, const Quat &q2, T t, T tolerance); + + void write(std::ostream& os) const { os.write(static_cast(&mm), sizeof(T) * 4); } + void read(std::istream& is) { is.read(static_cast(&mm), sizeof(T) * 4); } + +protected: + T mm[4]; +}; + +/// Multiply each element of the given quaternion by @a scalar and return the result. +template +Quat operator*(S scalar, const Quat &q) { return q*scalar; } + + +/// @brief Interpolate between m1 and m2. +/// Converts to quaternion form and uses slerp +/// m1 and m2 must be rotation matrices! +template +Mat3 slerp(const Mat3 &m1, const Mat3 &m2, T t) +{ + using MatType = Mat3; + + Quat q1(m1); + Quat q2(m2); + + if (q1.dot(q2) < 0) q2 *= -1; + + Quat qslerp = slerp(q1, q2, static_cast(t)); + MatType m = rotation(qslerp); + return m; +} + + + +/// Interpolate between m1 and m4 by converting m1 ... m4 into +/// quaternions and treating them as control points of a Bezier +/// curve using slerp in place of lerp in the De Castlejeau evaluation +/// algorithm. Just like a cubic Bezier curve, this will interpolate +/// m1 at t = 0 and m4 at t = 1 but in general will not pass through +/// m2 and m3. Unlike a standard Bezier curve this curve will not have +/// the convex hull property. +/// m1 ... m4 must be rotation matrices! +template +Mat3 bezLerp(const Mat3 &m1, const Mat3 &m2, + const Mat3 &m3, const Mat3 &m4, + T t) +{ + Mat3 m00, m01, m02, m10, m11; + + m00 = slerp(m1, m2, t); + m01 = slerp(m2, m3, t); + m02 = slerp(m3, m4, t); + + m10 = slerp(m00, m01, t); + m11 = slerp(m01, m02, t); + + return slerp(m10, m11, t); +} + +using Quats = Quat; +using Quatd = Quat; + +} // namespace math + + +template<> inline math::Quats zeroVal() { return math::Quats::zero(); } +template<> inline math::Quatd zeroVal() { return math::Quatd::zero(); } + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif //OPENVDB_MATH_QUAT_H_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Ray.h b/openvdb/math/Ray.h new file mode 100644 index 00000000..e0d92b01 --- /dev/null +++ b/openvdb/math/Ray.h @@ -0,0 +1,311 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Ray.h +/// +/// @author Ken Museth +/// +/// @brief A Ray class. + +#ifndef OPENVDB_MATH_RAY_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_RAY_HAS_BEEN_INCLUDED + +#include "Math.h" +#include "Vec3.h" +#include "Transform.h" +#include // for std::swap() +#include // for std::ostream +#include // for std::numeric_limits::max() + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template +class Ray +{ +public: + static_assert(std::is_floating_point::value, + "math::Ray requires a floating-point value type"); + + using RealType = RealT; + using Vec3Type = Vec3; + using Vec3T = Vec3Type; + + struct TimeSpan { + RealT t0, t1; + /// @brief Default constructor + TimeSpan() {} + /// @brief Constructor + TimeSpan(RealT _t0, RealT _t1) : t0(_t0), t1(_t1) {} + /// @brief Set both times + inline void set(RealT _t0, RealT _t1) { t0=_t0; t1=_t1; } + /// @brief Get both times + inline void get(RealT& _t0, RealT& _t1) const { _t0=t0; _t1=t1; } + /// @brief Return @c true if t1 is larger than t0 by at least eps. + inline bool valid(RealT eps=math::Delta::value()) const { return (t1-t0)>eps; } + /// @brief Return the midpoint of the ray. + inline RealT mid() const { return 0.5*(t0 + t1); } + /// @brief Multiplies both times + inline void scale(RealT s) {assert(s>0); t0*=s; t1*=s; } + /// @brief Return @c true if time is inclusive + inline bool test(RealT t) const { return (t>=t0 && t<=t1); } + }; + + Ray(const Vec3Type& eye = Vec3Type(0,0,0), + const Vec3Type& direction = Vec3Type(1,0,0), + RealT t0 = math::Delta::value(), + RealT t1 = std::numeric_limits::max()) + : mEye(eye), mDir(direction), mInvDir(1/mDir), mTimeSpan(t0, t1) + { + } + + inline void setEye(const Vec3Type& eye) { mEye = eye; } + + inline void setDir(const Vec3Type& dir) + { + mDir = dir; + mInvDir = 1/mDir; + } + + inline void setMinTime(RealT t0) { assert(t0>0); mTimeSpan.t0 = t0; } + + inline void setMaxTime(RealT t1) { assert(t1>0); mTimeSpan.t1 = t1; } + + inline void setTimes( + RealT t0 = math::Delta::value(), + RealT t1 = std::numeric_limits::max()) + { + assert(t0>0 && t1>0); + mTimeSpan.set(t0, t1); + } + + inline void scaleTimes(RealT scale) { mTimeSpan.scale(scale); } + + inline void reset( + const Vec3Type& eye, + const Vec3Type& direction, + RealT t0 = math::Delta::value(), + RealT t1 = std::numeric_limits::max()) + { + this->setEye(eye); + this->setDir(direction); + this->setTimes(t0, t1); + } + + inline const Vec3T& eye() const {return mEye;} + + inline const Vec3T& dir() const {return mDir;} + + inline const Vec3T& invDir() const {return mInvDir;} + + inline RealT t0() const {return mTimeSpan.t0;} + + inline RealT t1() const {return mTimeSpan.t1;} + + /// @brief Return the position along the ray at the specified time. + inline Vec3R operator()(RealT time) const { return mEye + mDir * time; } + + /// @brief Return the starting point of the ray. + inline Vec3R start() const { return (*this)(mTimeSpan.t0); } + + /// @brief Return the endpoint of the ray. + inline Vec3R end() const { return (*this)(mTimeSpan.t1); } + + /// @brief Return the midpoint of the ray. + inline Vec3R mid() const { return (*this)(mTimeSpan.mid()); } + + /// @brief Return @c true if t1 is larger than t0 by at least eps. + inline bool valid(RealT eps=math::Delta::value()) const { return mTimeSpan.valid(eps); } + + /// @brief Return @c true if @a time is within t0 and t1, both inclusive. + inline bool test(RealT time) const { return mTimeSpan.test(time); } + + /// @brief Return a new Ray that is transformed with the specified map. + /// @param map the map from which to construct the new Ray. + /// @warning Assumes a linear map and a normalized direction. + /// @details The requirement that the direction is normalized + /// follows from the transformation of t0 and t1 - and that fact that + /// we want applyMap and applyInverseMap to be inverse operations. + template + inline Ray applyMap(const MapType& map) const + { + assert(map.isLinear()); + assert(math::isRelOrApproxEqual(mDir.length(), RealT(1), + Tolerance::value(), Delta::value())); + const Vec3T eye = map.applyMap(mEye); + const Vec3T dir = map.applyJacobian(mDir); + const RealT length = dir.length(); + return Ray(eye, dir/length, length*mTimeSpan.t0, length*mTimeSpan.t1); + } + + /// @brief Return a new Ray that is transformed with the inverse of the specified map. + /// @param map the map from which to construct the new Ray by inverse mapping. + /// @warning Assumes a linear map and a normalized direction. + /// @details The requirement that the direction is normalized + /// follows from the transformation of t0 and t1 - and that fact that + /// we want applyMap and applyInverseMap to be inverse operations. + template + inline Ray applyInverseMap(const MapType& map) const + { + assert(map.isLinear()); + assert(math::isRelOrApproxEqual(mDir.length(), RealT(1), Tolerance::value(), Delta::value())); + const Vec3T eye = map.applyInverseMap(mEye); + const Vec3T dir = map.applyInverseJacobian(mDir); + const RealT length = dir.length(); + return Ray(eye, dir/length, length*mTimeSpan.t0, length*mTimeSpan.t1); + } + + /// @brief Return a new ray in world space, assuming the existing + /// ray is represented in the index space of the specified grid. + template + inline Ray indexToWorld(const GridType& grid) const + { + return this->applyMap(*(grid.transform().baseMap())); + } + + /// @brief Return a new ray in the index space of the specified + /// grid, assuming the existing ray is represented in world space. + template + inline Ray worldToIndex(const GridType& grid) const + { + return this->applyInverseMap(*(grid.transform().baseMap())); + } + + /// @brief Return true if this ray intersects the specified sphere. + /// @param center The center of the sphere in the same space as this ray. + /// @param radius The radius of the sphere in the same units as this ray. + /// @param t0 The first intersection point if an intersection exists. + /// @param t1 The second intersection point if an intersection exists. + /// @note If the return value is true, i.e. a hit, and t0 = + /// this->t0() or t1 == this->t1() only one true intersection exist. + inline bool intersects(const Vec3T& center, RealT radius, RealT& t0, RealT& t1) const + { + const Vec3T origin = mEye - center; + const RealT A = mDir.lengthSqr(); + const RealT B = 2 * mDir.dot(origin); + const RealT C = origin.lengthSqr() - radius * radius; + const RealT D = B * B - 4 * A * C; + + if (D < 0) return false; + + const RealT Q = RealT(-0.5)*(B<0 ? (B + Sqrt(D)) : (B - Sqrt(D))); + + t0 = Q / A; + t1 = C / Q; + + if (t0 > t1) std::swap(t0, t1); + if (t0 < mTimeSpan.t0) t0 = mTimeSpan.t0; + if (t1 > mTimeSpan.t1) t1 = mTimeSpan.t1; + return t0 <= t1; + } + + /// @brief Return true if this ray intersects the specified sphere. + /// @param center The center of the sphere in the same space as this ray. + /// @param radius The radius of the sphere in the same units as this ray. + inline bool intersects(const Vec3T& center, RealT radius) const + { + RealT t0, t1; + return this->intersects(center, radius, t0, t1)>0; + } + + /// @brief Return true if this ray intersects the specified sphere. + /// @note For intersection this ray is clipped to the two intersection points. + /// @param center The center of the sphere in the same space as this ray. + /// @param radius The radius of the sphere in the same units as this ray. + inline bool clip(const Vec3T& center, RealT radius) + { + RealT t0, t1; + const bool hit = this->intersects(center, radius, t0, t1); + if (hit) mTimeSpan.set(t0, t1); + return hit; + } + + /// @brief Return true if the Ray intersects the specified + /// axisaligned bounding box. + /// @param bbox Axis-aligned bounding box in the same space as the Ray. + /// @param t0 If an intersection is detected this is assigned + /// the time for the first intersection point. + /// @param t1 If an intersection is detected this is assigned + /// the time for the second intersection point. + template + inline bool intersects(const BBoxT& bbox, RealT& t0, RealT& t1) const + { + mTimeSpan.get(t0, t1); + for (int i = 0; i < 3; ++i) { + RealT a = (bbox.min()[i] - mEye[i]) * mInvDir[i]; + RealT b = (bbox.max()[i] - mEye[i]) * mInvDir[i]; + if (a > b) std::swap(a, b); + if (a > t0) t0 = a; + if (b < t1) t1 = b; + if (t0 > t1) return false; + } + return true; + } + + /// @brief Return true if this ray intersects the specified bounding box. + /// @param bbox Axis-aligned bounding box in the same space as this ray. + template + inline bool intersects(const BBoxT& bbox) const + { + RealT t0, t1; + return this->intersects(bbox, t0, t1); + } + + /// @brief Return true if this ray intersects the specified bounding box. + /// @note For intersection this ray is clipped to the two intersection points. + /// @param bbox Axis-aligned bounding box in the same space as this ray. + template + inline bool clip(const BBoxT& bbox) + { + RealT t0, t1; + const bool hit = this->intersects(bbox, t0, t1); + if (hit) mTimeSpan.set(t0, t1); + return hit; + } + + /// @brief Return true if the Ray intersects the plane specified + /// by a normal and distance from the origin. + /// @param normal Normal of the plane. + /// @param distance Distance of the plane to the origin. + /// @param t Time of intersection, if one exists. + inline bool intersects(const Vec3T& normal, RealT distance, RealT& t) const + { + const RealT cosAngle = mDir.dot(normal); + if (math::isApproxZero(cosAngle)) return false;//parallel + t = (distance - mEye.dot(normal))/cosAngle; + return this->test(t); + } + + /// @brief Return true if the Ray intersects the plane specified + /// by a normal and point. + /// @param normal Normal of the plane. + /// @param point Point in the plane. + /// @param t Time of intersection, if one exists. + inline bool intersects(const Vec3T& normal, const Vec3T& point, RealT& t) const + { + return this->intersects(normal, point.dot(normal), t); + } + +private: + Vec3T mEye, mDir, mInvDir; + TimeSpan mTimeSpan; +}; // end of Ray class + + +/// @brief Output streaming of the Ray class. +/// @note Primarily intended for debugging. +template +inline std::ostream& operator<<(std::ostream& os, const Ray& r) +{ + os << "eye=" << r.eye() << " dir=" << r.dir() << " 1/dir="< > +class MinMax +{ + using Limits = std::numeric_limits; +public: + + /// @brief Empty constructor + /// + /// @warning Only use this constructor with POD types + MinMax() : mMin(Limits::max()), mMax(Limits::lowest()) + { + static_assert(std::numeric_limits::is_specialized, + "openvdb::math::MinMax default constructor requires a std::numeric_limits specialization"); + } + + /// @brief Constructor + MinMax(const ValueType &min, const ValueType &max) : mMin(min), mMax(max) + { + } + + /// @brief Default copy constructor + MinMax(const MinMax &other) = default; + + /// Add a single sample. + inline void add(const ValueType &val, const Less &less = Less()) + { + if (less(val, mMin)) mMin = val; + if (less(mMax, val)) mMax = val; + } + + /// Return the minimum value. + inline const ValueType& min() const { return mMin; } + + /// Return the maximum value. + inline const ValueType& max() const { return mMax; } + + /// Add the samples from the other Stats instance. + inline void add(const MinMax& other, const Less &less = Less()) + { + if (less(other.mMin, mMin)) mMin = other.mMin; + if (less(mMax, other.mMax)) mMax = other.mMax; + } + + /// @brief Print MinMax to the specified output stream. + void print(const std::string &name= "", std::ostream &strm=std::cout, int precision=3) const + { + // Write to a temporary string stream so as not to affect the state + // (precision, field width, etc.) of the output stream. + std::ostringstream os; + os << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + os << "MinMax "; + if (!name.empty()) os << "for \"" << name << "\" "; + os << " Min=" << mMin << ", Max=" << mMax << std::endl; + strm << os.str(); + } + +protected: + + ValueType mMin, mMax; +};//end MinMax + +/// @brief This class computes the minimum and maximum values of a population +/// of floating-point values. +class Extrema +{ +public: + + /// @brief Constructor + /// @warning The min/max values are initiated to extreme values + Extrema() + : mSize(0) + , mMin(std::numeric_limits::max()) + , mMax(-mMin) + { + } + + /// Add a single sample. + void add(double val) + { + ++mSize; + mMin = std::min(val, mMin); + mMax = std::max(val, mMax); + } + + /// Add @a n samples with constant value @a val. + void add(double val, uint64_t n) + { + mSize += n; + mMin = std::min(val, mMin); + mMax = std::max(val, mMax); + } + + /// Return the size of the population, i.e., the total number of samples. + inline uint64_t size() const { return mSize; } + + /// Return the minimum value. + inline double min() const { return mMin; } + + /// Return the maximum value. + inline double max() const { return mMax; } + + /// Return the range defined as the maximum value minus the minimum value. + inline double range() const { return mMax - mMin; } + + /// Add the samples from the other Stats instance. + void add(const Extrema& other) + { + if (other.mSize > 0) this->join(other); + } + + /// @brief Print extrema to the specified output stream. + void print(const std::string &name= "", std::ostream &strm=std::cout, int precision=3) const + { + // Write to a temporary string stream so as not to affect the state + // (precision, field width, etc.) of the output stream. + std::ostringstream os; + os << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + os << "Extrema "; + if (!name.empty()) os << "for \"" << name << "\" "; + if (mSize>0) { + os << "with " << mSize << " samples:\n" + << " Min=" << mMin + << ", Max=" << mMax + << ", Range="<< this->range() << std::endl; + } else { + os << ": no samples were added." << std::endl; + } + strm << os.str(); + } + +protected: + + inline void join(const Extrema& other) + { + assert(other.mSize > 0); + mSize += other.mSize; + mMin = std::min(mMin, other.mMin); + mMax = std::max(mMax, other.mMax); + } + + uint64_t mSize; + double mMin, mMax; +};//end Extrema + + +/// @brief This class computes statistics (minimum value, maximum +/// value, mean, variance and standard deviation) of a population +/// of floating-point values. +/// +/// @details variance = Mean[ (X-Mean[X])^2 ] = Mean[X^2] - Mean[X]^2, +/// standard deviation = sqrt(variance) +/// +/// @note This class employs incremental computation and double precision. +class Stats : public Extrema +{ +public: + Stats() + : Extrema() + , mAvg(0.0) + , mAux(0.0) + { + } + + /// Add a single sample. + void add(double val) + { + Extrema::add(val); + const double delta = val - mAvg; + mAvg += delta/double(mSize); + mAux += delta*(val - mAvg); + } + + /// Add @a n samples with constant value @a val. + void add(double val, uint64_t n) + { + const double denom = 1.0/double(mSize + n); + const double delta = val - mAvg; + mAvg += denom * delta * double(n); + mAux += denom * delta * delta * double(mSize) * double(n); + Extrema::add(val, n); + } + + /// Add the samples from the other Stats instance. + void add(const Stats& other) + { + if (other.mSize > 0) { + const double denom = 1.0/double(mSize + other.mSize); + const double delta = other.mAvg - mAvg; + mAvg += denom * delta * double(other.mSize); + mAux += other.mAux + denom * delta * delta * double(mSize) * double(other.mSize); + Extrema::join(other); + } + } + + //@{ + /// Return the arithmetic mean, i.e. average, value. + inline double avg() const { return mAvg; } + inline double mean() const { return mAvg; } + //@} + + //@{ + /// @brief Return the population variance. + /// @note The unbiased sample variance = population variance * + //num/(num-1) + inline double var() const { return mSize<2 ? 0.0 : mAux/double(mSize); } + inline double variance() const { return this->var(); } + //@} + + //@{ + /// @brief Return the standard deviation (=Sqrt(variance)) as + /// defined from the (biased) population variance. + inline double std() const { return sqrt(this->var()); } + inline double stdDev() const { return this->std(); } + //@} + + /// @brief Print statistics to the specified output stream. + void print(const std::string &name= "", std::ostream &strm=std::cout, int precision=3) const + { + // Write to a temporary string stream so as not to affect the state + // (precision, field width, etc.) of the output stream. + std::ostringstream os; + os << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + os << "Statistics "; + if (!name.empty()) os << "for \"" << name << "\" "; + if (mSize>0) { + os << "with " << mSize << " samples:\n" + << " Min=" << mMin + << ", Max=" << mMax + << ", Ave=" << mAvg + << ", Std=" << this->stdDev() + << ", Var=" << this->variance() << std::endl; + } else { + os << ": no samples were added." << std::endl; + } + strm << os.str(); + } + +protected: + using Extrema::mSize; + using Extrema::mMin; + using Extrema::mMax; + double mAvg, mAux; +}; // end Stats + + +//////////////////////////////////////// + + +/// @brief This class computes a histogram, with a fixed interval width, +/// of a population of floating-point values. +class Histogram +{ +public: + /// Construct with given minimum and maximum values and the given bin count. + Histogram(double min, double max, size_t numBins = 10) + : mSize(0), mMin(min), mMax(max + 1e-10), + mDelta(double(numBins)/(max-min)), mBins(numBins) + { + if ( mMax <= mMin ) { + OPENVDB_THROW(ValueError, "Histogram: expected min < max"); + } else if ( numBins == 0 ) { + OPENVDB_THROW(ValueError, "Histogram: expected at least one bin"); + } + for (size_t i=0; imMax) return false; + mBins[size_t(mDelta*(val-mMin))] += n; + mSize += n; + return true; + } + + /// @brief Add all the contributions from the other histogram, provided that + /// it has the same configuration as this histogram. + bool add(const Histogram& other) + { + if (!isApproxEqual(mMin, other.mMin) || !isApproxEqual(mMax, other.mMax) || + mBins.size() != other.mBins.size()) return false; + for (size_t i=0, e=mBins.size(); i!=e; ++i) mBins[i] += other.mBins[i]; + mSize += other.mSize; + return true; + } + + /// Return the number of bins in this histogram. + inline size_t numBins() const { return mBins.size(); } + /// Return the lower bound of this histogram's value range. + inline double min() const { return mMin; } + /// Return the upper bound of this histogram's value range. + inline double max() const { return mMax; } + /// Return the minimum value in the nth bin. + inline double min(int n) const { return mMin+n/mDelta; } + /// Return the maximum value in the nth bin. + inline double max(int n) const { return mMin+(n+1)/mDelta; } + /// Return the number of samples in the nth bin. + inline uint64_t count(int n) const { return mBins[n]; } + /// Return the population size, i.e., the total number of samples. + inline uint64_t size() const { return mSize; } + + /// Print the histogram to the specified output stream. + void print(const std::string& name = "", std::ostream& strm = std::cout) const + { + // Write to a temporary string stream so as not to affect the state + // (precision, field width, etc.) of the output stream. + std::ostringstream os; + os << std::setprecision(6) << std::setiosflags(std::ios::fixed) << std::endl; + os << "Histogram "; + if (!name.empty()) os << "for \"" << name << "\" "; + if (mSize > 0) { + os << "with " << mSize << " samples:\n"; + os << "==============================================================\n"; + os << "|| # | Min | Max | Frequency | % ||\n"; + os << "==============================================================\n"; + for (int i = 0, e = int(mBins.size()); i != e; ++i) { + os << "|| " << std::setw(4) << i << " | " << std::setw(14) << this->min(i) << " | " + << std::setw(14) << this->max(i) << " | " << std::setw(9) << mBins[i] << " | " + << std::setw(3) << (100*mBins[i]/mSize) << " ||\n"; + } + os << "==============================================================\n"; + } else { + os << ": no samples were added." << std::endl; + } + strm << os.str(); + } + +private: + uint64_t mSize; + double mMin, mMax, mDelta; + std::vector mBins; +};// end Histogram + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_STATS_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Stencils.h b/openvdb/math/Stencils.h new file mode 100644 index 00000000..2cb269ab --- /dev/null +++ b/openvdb/math/Stencils.h @@ -0,0 +1,1815 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file Stencils.h +/// +/// @brief Defines various finite difference stencils by means of the +/// "curiously recurring template pattern" on a BaseStencil +/// that caches stencil values and stores a ValueAccessor for +/// fast lookup. + +#ifndef OPENVDB_MATH_STENCILS_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_STENCILS_HAS_BEEN_INCLUDED + +#include +#include // for std::vector +#include // for std::bitset +#include // for Pow2, needed by WENO and Godunov +#include // for Real +#include // for Coord +#include // for WENO5 and GodunovsNormSqrd +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + + +//////////////////////////////////////// + +template +class BaseStencil +{ +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridT::ValueType ValueType; + typedef tree::ValueAccessor AccessorType; + typedef std::vector BufferType; + typedef typename BufferType::iterator IterType; + + /// @brief Initialize the stencil buffer with the values of voxel (i, j, k) + /// and its neighbors. + /// @param ijk Index coordinates of stencil center + inline void moveTo(const Coord& ijk) + { + mCenter = ijk; + mValues[0] = mAcc.getValue(ijk); + static_cast(*this).init(mCenter); + } + + /// @brief Initialize the stencil buffer with the values of voxel (i, j, k) + /// and its neighbors. The method also takes a value of the center + /// element of the stencil, assuming it is already known. + /// @param ijk Index coordinates of stnecil center + /// @param centerValue Value of the center element of the stencil + inline void moveTo(const Coord& ijk, const ValueType& centerValue) + { + mCenter = ijk; + mValues[0] = centerValue; + static_cast(*this).init(mCenter); + } + + /// @brief Initialize the stencil buffer with the values of voxel + /// (x, y, z) and its neighbors. + /// + /// @note This version is slightly faster than the one above, since + /// the center voxel's value is read directly from the iterator. + template + inline void moveTo(const IterType& iter) + { + mCenter = iter.getCoord(); + mValues[0] = *iter; + static_cast(*this).init(mCenter); + } + + /// @brief Initialize the stencil buffer with the values of voxel (x, y, z) + /// and its neighbors. + /// @param xyz Floating point voxel coordinates of stencil center + /// @details This method will check to see if it is necessary to + /// update the stencil based on the cached index coordinates of + /// the center point. + template + inline void moveTo(const Vec3& xyz) + { + Coord ijk = Coord::floor(xyz); + if (ijk != mCenter) this->moveTo(ijk); + } + + /// @brief Return the value from the stencil buffer with linear + /// offset pos. + /// + /// @note The default (@a pos = 0) corresponds to the first element + /// which is typically the center point of the stencil. + inline const ValueType& getValue(unsigned int pos = 0) const + { + assert(pos < mValues.size()); + return mValues[pos]; + } + + /// @brief Return the value at the specified location relative to the center of the stencil + template + inline const ValueType& getValue() const + { + return mValues[static_cast(*this).template pos()]; + } + + /// @brief Set the value at the specified location relative to the center of the stencil + template + inline void setValue(const ValueType& value) + { + mValues[static_cast(*this).template pos()] = value; + } + + /// @brief Return the size of the stencil buffer. + inline int size() { return mValues.size(); } + + /// @brief Return the median value of the current stencil. + inline ValueType median() const + { + BufferType tmp(mValues);//local copy + assert(!tmp.empty()); + size_t midpoint = (tmp.size() - 1) >> 1; + // Partially sort the vector until the median value is at the midpoint. + std::nth_element(tmp.begin(), tmp.begin() + midpoint, tmp.end()); + return tmp[midpoint]; + } + + /// @brief Return the mean value of the current stencil. + inline ValueType mean() const + { + ValueType sum = 0.0; + for (int n = 0, s = int(mValues.size()); n < s; ++n) sum += mValues[n]; + return sum / ValueType(mValues.size()); + } + + /// @brief Return the smallest value in the stencil buffer. + inline ValueType min() const + { + IterType iter = std::min_element(mValues.begin(), mValues.end()); + return *iter; + } + + /// @brief Return the largest value in the stencil buffer. + inline ValueType max() const + { + IterType iter = std::max_element(mValues.begin(), mValues.end()); + return *iter; + } + + /// @brief Return the coordinates of the center point of the stencil. + inline const Coord& getCenterCoord() const { return mCenter; } + + /// @brief Return the value at the center of the stencil + inline const ValueType& getCenterValue() const { return mValues[0]; } + + /// @brief Return true if the center of the stencil intersects the + /// iso-contour specified by the isoValue + inline bool intersects(const ValueType &isoValue = zeroVal()) const + { + const bool less = this->getValue< 0, 0, 0>() < isoValue; + return (less ^ (this->getValue<-1, 0, 0>() < isoValue)) || + (less ^ (this->getValue< 1, 0, 0>() < isoValue)) || + (less ^ (this->getValue< 0,-1, 0>() < isoValue)) || + (less ^ (this->getValue< 0, 1, 0>() < isoValue)) || + (less ^ (this->getValue< 0, 0,-1>() < isoValue)) || + (less ^ (this->getValue< 0, 0, 1>() < isoValue)) ; + } + + /// @brief Return true a bit-mask where the 6 bits indicates if the + /// center of the stencil intersects the iso-contour specified by the isoValue. + /// + /// @note There are 2^6 = 64 different possible cases, including no intersections! + /// + /// @details The ordering of bit mask is ( -x, +x, -y, +y, -z, +z ), so to + /// check if there is an intersection in -y use mask.test(2) where mask is + /// ther return value from this function. To check if there are any + /// intersections use mask.any(), and for no intersections use mask.none(). + /// To count the number of intersections use mask.count(). + inline std::bitset<6> intersectionMask(const ValueType &isoValue = zeroVal()) const + { + std::bitset<6> mask; + const bool less = this->getValue< 0, 0, 0>() < isoValue; + mask[0] = less ^ (this->getValue<-1, 0, 0>() < isoValue); + mask[1] = less ^ (this->getValue< 1, 0, 0>() < isoValue); + mask[2] = less ^ (this->getValue< 0,-1, 0>() < isoValue); + mask[3] = less ^ (this->getValue< 0, 1, 0>() < isoValue); + mask[4] = less ^ (this->getValue< 0, 0,-1>() < isoValue); + mask[5] = less ^ (this->getValue< 0, 0, 1>() < isoValue); + return mask; + } + + /// @brief Return a const reference to the grid from which this + /// stencil was constructed. + inline const GridType& grid() const { return *mGrid; } + + /// @brief Return a const reference to the ValueAccessor + /// associated with this Stencil. + inline const AccessorType& accessor() const { return mAcc; } + +protected: + // Constructor is protected to prevent direct instantiation. + BaseStencil(const GridType& grid, int size) + : mGrid(&grid) + , mAcc(grid.tree()) + , mValues(size) + , mCenter(Coord::max()) + { + } + + const GridType* mGrid; + AccessorType mAcc; + BufferType mValues; + Coord mCenter; + +}; // BaseStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the seven point stencil + template struct SevenPt {}; + template<> struct SevenPt< 0, 0, 0> { enum { idx = 0 }; }; + template<> struct SevenPt< 1, 0, 0> { enum { idx = 1 }; }; + template<> struct SevenPt< 0, 1, 0> { enum { idx = 2 }; }; + template<> struct SevenPt< 0, 0, 1> { enum { idx = 3 }; }; + template<> struct SevenPt<-1, 0, 0> { enum { idx = 4 }; }; + template<> struct SevenPt< 0,-1, 0> { enum { idx = 5 }; }; + template<> struct SevenPt< 0, 0,-1> { enum { idx = 6 }; }; + +} + + +template +class SevenPointStencil: public BaseStencil, GridT, IsSafe> +{ + typedef SevenPointStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridT::ValueType ValueType; + + static const int SIZE = 7; + + SevenPointStencil(const GridT& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return SevenPt::idx; } + +private: + inline void init(const Coord& ijk) + { + BaseType::template setValue<-1, 0, 0>(mAcc.getValue(ijk.offsetBy(-1, 0, 0))); + BaseType::template setValue< 1, 0, 0>(mAcc.getValue(ijk.offsetBy( 1, 0, 0))); + + BaseType::template setValue< 0,-1, 0>(mAcc.getValue(ijk.offsetBy( 0,-1, 0))); + BaseType::template setValue< 0, 1, 0>(mAcc.getValue(ijk.offsetBy( 0, 1, 0))); + + BaseType::template setValue< 0, 0,-1>(mAcc.getValue(ijk.offsetBy( 0, 0,-1))); + BaseType::template setValue< 0, 0, 1>(mAcc.getValue(ijk.offsetBy( 0, 0, 1))); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// SevenPointStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the eight point box stencil + template struct BoxPt {}; + template<> struct BoxPt< 0, 0, 0> { enum { idx = 0 }; }; + template<> struct BoxPt< 0, 0, 1> { enum { idx = 1 }; }; + template<> struct BoxPt< 0, 1, 1> { enum { idx = 2 }; }; + template<> struct BoxPt< 0, 1, 0> { enum { idx = 3 }; }; + template<> struct BoxPt< 1, 0, 0> { enum { idx = 4 }; }; + template<> struct BoxPt< 1, 0, 1> { enum { idx = 5 }; }; + template<> struct BoxPt< 1, 1, 1> { enum { idx = 6 }; }; + template<> struct BoxPt< 1, 1, 0> { enum { idx = 7 }; }; +} + +template +class BoxStencil: public BaseStencil, GridT, IsSafe> +{ + typedef BoxStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridT::ValueType ValueType; + + static const int SIZE = 8; + + BoxStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return BoxPt::idx; } + + /// @brief Return true if the center of the stencil intersects the + /// iso-contour specified by the isoValue + inline bool intersects(const ValueType &isoValue = zeroVal()) const + { + const bool less = mValues[0] < isoValue; + return (less ^ (mValues[1] < isoValue)) || + (less ^ (mValues[2] < isoValue)) || + (less ^ (mValues[3] < isoValue)) || + (less ^ (mValues[4] < isoValue)) || + (less ^ (mValues[5] < isoValue)) || + (less ^ (mValues[6] < isoValue)) || + (less ^ (mValues[7] < isoValue)) ; + } + + /// @brief Return the trilinear interpolation at the normalized position. + /// @param xyz Floating point coordinate position. + /// @warning It is assumed that the stencil has already been moved + /// to the relevant voxel position, e.g. using moveTo(xyz). + /// @note Trilinear interpolation kernal reads as: + /// v000 (1-u)(1-v)(1-w) + v001 (1-u)(1-v)w + v010 (1-u)v(1-w) + v011 (1-u)vw + /// + v100 u(1-v)(1-w) + v101 u(1-v)w + v110 uv(1-w) + v111 uvw + inline ValueType interpolation(const math::Vec3& xyz) const + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueType u = xyz[0] - BaseType::mCenter[0]; + const ValueType v = xyz[1] - BaseType::mCenter[1]; + const ValueType w = xyz[2] - BaseType::mCenter[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + + assert(u>=0 && u<=1); + assert(v>=0 && v<=1); + assert(w>=0 && w<=1); + + ValueType V = BaseType::template getValue<0,0,0>(); + ValueType A = static_cast(V + (BaseType::template getValue<0,0,1>() - V) * w); + V = BaseType::template getValue< 0, 1, 0>(); + ValueType B = static_cast(V + (BaseType::template getValue<0,1,1>() - V) * w); + ValueType C = static_cast(A + (B - A) * v); + + V = BaseType::template getValue<1,0,0>(); + A = static_cast(V + (BaseType::template getValue<1,0,1>() - V) * w); + V = BaseType::template getValue<1,1,0>(); + B = static_cast(V + (BaseType::template getValue<1,1,1>() - V) * w); + ValueType D = static_cast(A + (B - A) * v); + + return static_cast(C + (D - C) * u); + } + + /// @brief Return the gradient in world space of the trilinear interpolation kernel. + /// @param xyz Floating point coordinate position. + /// @warning It is assumed that the stencil has already been moved + /// to the relevant voxel position, e.g. using moveTo(xyz). + /// @note Computed as partial derivatives of the trilinear interpolation kernel: + /// v000 (1-u)(1-v)(1-w) + v001 (1-u)(1-v)w + v010 (1-u)v(1-w) + v011 (1-u)vw + /// + v100 u(1-v)(1-w) + v101 u(1-v)w + v110 uv(1-w) + v111 uvw + inline math::Vec3 gradient(const math::Vec3& xyz) const + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueType u = xyz[0] - BaseType::mCenter[0]; + const ValueType v = xyz[1] - BaseType::mCenter[1]; + const ValueType w = xyz[2] - BaseType::mCenter[2]; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + + assert(u>=0 && u<=1); + assert(v>=0 && v<=1); + assert(w>=0 && w<=1); + + ValueType D[4]={BaseType::template getValue<0,0,1>()-BaseType::template getValue<0,0,0>(), + BaseType::template getValue<0,1,1>()-BaseType::template getValue<0,1,0>(), + BaseType::template getValue<1,0,1>()-BaseType::template getValue<1,0,0>(), + BaseType::template getValue<1,1,1>()-BaseType::template getValue<1,1,0>()}; + + // Z component + ValueType A = static_cast(D[0] + (D[1]- D[0]) * v); + ValueType B = static_cast(D[2] + (D[3]- D[2]) * v); + math::Vec3 grad(zeroVal(), + zeroVal(), + static_cast(A + (B - A) * u)); + + D[0] = static_cast(BaseType::template getValue<0,0,0>() + D[0] * w); + D[1] = static_cast(BaseType::template getValue<0,1,0>() + D[1] * w); + D[2] = static_cast(BaseType::template getValue<1,0,0>() + D[2] * w); + D[3] = static_cast(BaseType::template getValue<1,1,0>() + D[3] * w); + + // X component + A = static_cast(D[0] + (D[1] - D[0]) * v); + B = static_cast(D[2] + (D[3] - D[2]) * v); + + grad[0] = B - A; + + // Y component + A = D[1] - D[0]; + B = D[3] - D[2]; + + grad[1] = static_cast(A + (B - A) * u); + + return BaseType::mGrid->transform().baseMap()->applyIJT(grad, xyz); + } + +private: + inline void init(const Coord& ijk) + { + BaseType::template setValue< 0, 0, 1>(mAcc.getValue(ijk.offsetBy( 0, 0, 1))); + BaseType::template setValue< 0, 1, 1>(mAcc.getValue(ijk.offsetBy( 0, 1, 1))); + BaseType::template setValue< 0, 1, 0>(mAcc.getValue(ijk.offsetBy( 0, 1, 0))); + BaseType::template setValue< 1, 0, 0>(mAcc.getValue(ijk.offsetBy( 1, 0, 0))); + BaseType::template setValue< 1, 0, 1>(mAcc.getValue(ijk.offsetBy( 1, 0, 1))); + BaseType::template setValue< 1, 1, 1>(mAcc.getValue(ijk.offsetBy( 1, 1, 1))); + BaseType::template setValue< 1, 1, 0>(mAcc.getValue(ijk.offsetBy( 1, 1, 0))); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// BoxStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the dense point stencil + template struct DensePt {}; + template<> struct DensePt< 0, 0, 0> { enum { idx = 0 }; }; + + template<> struct DensePt< 1, 0, 0> { enum { idx = 1 }; }; + template<> struct DensePt< 0, 1, 0> { enum { idx = 2 }; }; + template<> struct DensePt< 0, 0, 1> { enum { idx = 3 }; }; + + template<> struct DensePt<-1, 0, 0> { enum { idx = 4 }; }; + template<> struct DensePt< 0,-1, 0> { enum { idx = 5 }; }; + template<> struct DensePt< 0, 0,-1> { enum { idx = 6 }; }; + + template<> struct DensePt<-1,-1, 0> { enum { idx = 7 }; }; + template<> struct DensePt< 0,-1,-1> { enum { idx = 8 }; }; + template<> struct DensePt<-1, 0,-1> { enum { idx = 9 }; }; + + template<> struct DensePt< 1,-1, 0> { enum { idx = 10 }; }; + template<> struct DensePt< 0, 1,-1> { enum { idx = 11 }; }; + template<> struct DensePt<-1, 0, 1> { enum { idx = 12 }; }; + + template<> struct DensePt<-1, 1, 0> { enum { idx = 13 }; }; + template<> struct DensePt< 0,-1, 1> { enum { idx = 14 }; }; + template<> struct DensePt< 1, 0,-1> { enum { idx = 15 }; }; + + template<> struct DensePt< 1, 1, 0> { enum { idx = 16 }; }; + template<> struct DensePt< 0, 1, 1> { enum { idx = 17 }; }; + template<> struct DensePt< 1, 0, 1> { enum { idx = 18 }; }; +} + + +template +class SecondOrderDenseStencil + : public BaseStencil, GridT, IsSafe > +{ + typedef SecondOrderDenseStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 19; + + SecondOrderDenseStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return DensePt::idx; } + +private: + inline void init(const Coord& ijk) + { + mValues[DensePt< 1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[DensePt< 0, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[DensePt< 0, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + + mValues[DensePt<-1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[DensePt< 0,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -1, 0)); + mValues[DensePt< 0, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -1)); + + mValues[DensePt<-1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, -1, 0)); + mValues[DensePt< 1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, -1, 0)); + mValues[DensePt<-1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 1, 0)); + mValues[DensePt< 1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 1, 0)); + + mValues[DensePt<-1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, -1)); + mValues[DensePt< 1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, -1)); + mValues[DensePt<-1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 1)); + mValues[DensePt< 1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 1)); + + mValues[DensePt< 0,-1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, -1, -1)); + mValues[DensePt< 0, 1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, -1)); + mValues[DensePt< 0,-1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, -1, 1)); + mValues[DensePt< 0, 1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 1)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// SecondOrderDenseStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the dense point stencil + template struct ThirteenPt {}; + template<> struct ThirteenPt< 0, 0, 0> { enum { idx = 0 }; }; + + template<> struct ThirteenPt< 1, 0, 0> { enum { idx = 1 }; }; + template<> struct ThirteenPt< 0, 1, 0> { enum { idx = 2 }; }; + template<> struct ThirteenPt< 0, 0, 1> { enum { idx = 3 }; }; + + template<> struct ThirteenPt<-1, 0, 0> { enum { idx = 4 }; }; + template<> struct ThirteenPt< 0,-1, 0> { enum { idx = 5 }; }; + template<> struct ThirteenPt< 0, 0,-1> { enum { idx = 6 }; }; + + template<> struct ThirteenPt< 2, 0, 0> { enum { idx = 7 }; }; + template<> struct ThirteenPt< 0, 2, 0> { enum { idx = 8 }; }; + template<> struct ThirteenPt< 0, 0, 2> { enum { idx = 9 }; }; + + template<> struct ThirteenPt<-2, 0, 0> { enum { idx = 10 }; }; + template<> struct ThirteenPt< 0,-2, 0> { enum { idx = 11 }; }; + template<> struct ThirteenPt< 0, 0,-2> { enum { idx = 12 }; }; + +} + + +template +class ThirteenPointStencil + : public BaseStencil, GridT, IsSafe> +{ + typedef ThirteenPointStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 13; + + ThirteenPointStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return ThirteenPt::idx; } + +private: + inline void init(const Coord& ijk) + { + mValues[ThirteenPt< 2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 0)); + mValues[ThirteenPt< 1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[ThirteenPt<-1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[ThirteenPt<-2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 0)); + + mValues[ThirteenPt< 0, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 0)); + mValues[ThirteenPt< 0, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[ThirteenPt< 0,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -1, 0)); + mValues[ThirteenPt< 0,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -2, 0)); + + mValues[ThirteenPt< 0, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 2)); + mValues[ThirteenPt< 0, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + mValues[ThirteenPt< 0, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -1)); + mValues[ThirteenPt< 0, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -2)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// ThirteenPointStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the 4th-order dense point stencil + template struct FourthDensePt {}; + template<> struct FourthDensePt< 0, 0, 0> { enum { idx = 0 }; }; + + template<> struct FourthDensePt<-2, 2, 0> { enum { idx = 1 }; }; + template<> struct FourthDensePt<-1, 2, 0> { enum { idx = 2 }; }; + template<> struct FourthDensePt< 0, 2, 0> { enum { idx = 3 }; }; + template<> struct FourthDensePt< 1, 2, 0> { enum { idx = 4 }; }; + template<> struct FourthDensePt< 2, 2, 0> { enum { idx = 5 }; }; + + template<> struct FourthDensePt<-2, 1, 0> { enum { idx = 6 }; }; + template<> struct FourthDensePt<-1, 1, 0> { enum { idx = 7 }; }; + template<> struct FourthDensePt< 0, 1, 0> { enum { idx = 8 }; }; + template<> struct FourthDensePt< 1, 1, 0> { enum { idx = 9 }; }; + template<> struct FourthDensePt< 2, 1, 0> { enum { idx = 10 }; }; + + template<> struct FourthDensePt<-2, 0, 0> { enum { idx = 11 }; }; + template<> struct FourthDensePt<-1, 0, 0> { enum { idx = 12 }; }; + template<> struct FourthDensePt< 1, 0, 0> { enum { idx = 13 }; }; + template<> struct FourthDensePt< 2, 0, 0> { enum { idx = 14 }; }; + + template<> struct FourthDensePt<-2,-1, 0> { enum { idx = 15 }; }; + template<> struct FourthDensePt<-1,-1, 0> { enum { idx = 16 }; }; + template<> struct FourthDensePt< 0,-1, 0> { enum { idx = 17 }; }; + template<> struct FourthDensePt< 1,-1, 0> { enum { idx = 18 }; }; + template<> struct FourthDensePt< 2,-1, 0> { enum { idx = 19 }; }; + + template<> struct FourthDensePt<-2,-2, 0> { enum { idx = 20 }; }; + template<> struct FourthDensePt<-1,-2, 0> { enum { idx = 21 }; }; + template<> struct FourthDensePt< 0,-2, 0> { enum { idx = 22 }; }; + template<> struct FourthDensePt< 1,-2, 0> { enum { idx = 23 }; }; + template<> struct FourthDensePt< 2,-2, 0> { enum { idx = 24 }; }; + + + template<> struct FourthDensePt<-2, 0, 2> { enum { idx = 25 }; }; + template<> struct FourthDensePt<-1, 0, 2> { enum { idx = 26 }; }; + template<> struct FourthDensePt< 0, 0, 2> { enum { idx = 27 }; }; + template<> struct FourthDensePt< 1, 0, 2> { enum { idx = 28 }; }; + template<> struct FourthDensePt< 2, 0, 2> { enum { idx = 29 }; }; + + template<> struct FourthDensePt<-2, 0, 1> { enum { idx = 30 }; }; + template<> struct FourthDensePt<-1, 0, 1> { enum { idx = 31 }; }; + template<> struct FourthDensePt< 0, 0, 1> { enum { idx = 32 }; }; + template<> struct FourthDensePt< 1, 0, 1> { enum { idx = 33 }; }; + template<> struct FourthDensePt< 2, 0, 1> { enum { idx = 34 }; }; + + template<> struct FourthDensePt<-2, 0,-1> { enum { idx = 35 }; }; + template<> struct FourthDensePt<-1, 0,-1> { enum { idx = 36 }; }; + template<> struct FourthDensePt< 0, 0,-1> { enum { idx = 37 }; }; + template<> struct FourthDensePt< 1, 0,-1> { enum { idx = 38 }; }; + template<> struct FourthDensePt< 2, 0,-1> { enum { idx = 39 }; }; + + template<> struct FourthDensePt<-2, 0,-2> { enum { idx = 40 }; }; + template<> struct FourthDensePt<-1, 0,-2> { enum { idx = 41 }; }; + template<> struct FourthDensePt< 0, 0,-2> { enum { idx = 42 }; }; + template<> struct FourthDensePt< 1, 0,-2> { enum { idx = 43 }; }; + template<> struct FourthDensePt< 2, 0,-2> { enum { idx = 44 }; }; + + + template<> struct FourthDensePt< 0,-2, 2> { enum { idx = 45 }; }; + template<> struct FourthDensePt< 0,-1, 2> { enum { idx = 46 }; }; + template<> struct FourthDensePt< 0, 1, 2> { enum { idx = 47 }; }; + template<> struct FourthDensePt< 0, 2, 2> { enum { idx = 48 }; }; + + template<> struct FourthDensePt< 0,-2, 1> { enum { idx = 49 }; }; + template<> struct FourthDensePt< 0,-1, 1> { enum { idx = 50 }; }; + template<> struct FourthDensePt< 0, 1, 1> { enum { idx = 51 }; }; + template<> struct FourthDensePt< 0, 2, 1> { enum { idx = 52 }; }; + + template<> struct FourthDensePt< 0,-2,-1> { enum { idx = 53 }; }; + template<> struct FourthDensePt< 0,-1,-1> { enum { idx = 54 }; }; + template<> struct FourthDensePt< 0, 1,-1> { enum { idx = 55 }; }; + template<> struct FourthDensePt< 0, 2,-1> { enum { idx = 56 }; }; + + template<> struct FourthDensePt< 0,-2,-2> { enum { idx = 57 }; }; + template<> struct FourthDensePt< 0,-1,-2> { enum { idx = 58 }; }; + template<> struct FourthDensePt< 0, 1,-2> { enum { idx = 59 }; }; + template<> struct FourthDensePt< 0, 2,-2> { enum { idx = 60 }; }; + +} + + +template +class FourthOrderDenseStencil + : public BaseStencil, GridT, IsSafe> +{ + typedef FourthOrderDenseStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 61; + + FourthOrderDenseStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return FourthDensePt::idx; } + +private: + inline void init(const Coord& ijk) + { + mValues[FourthDensePt<-2, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 2, 0)); + mValues[FourthDensePt<-1, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 2, 0)); + mValues[FourthDensePt< 0, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 0)); + mValues[FourthDensePt< 1, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 2, 0)); + mValues[FourthDensePt< 2, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 2, 0)); + + mValues[FourthDensePt<-2, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 1, 0)); + mValues[FourthDensePt<-1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 1, 0)); + mValues[FourthDensePt< 0, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[FourthDensePt< 1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 1, 0)); + mValues[FourthDensePt< 2, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 1, 0)); + + mValues[FourthDensePt<-2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 0)); + mValues[FourthDensePt<-1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[FourthDensePt< 1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[FourthDensePt< 2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 0)); + + mValues[FourthDensePt<-2,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2,-1, 0)); + mValues[FourthDensePt<-1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1,-1, 0)); + mValues[FourthDensePt< 0,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 0)); + mValues[FourthDensePt< 1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1,-1, 0)); + mValues[FourthDensePt< 2,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2,-1, 0)); + + mValues[FourthDensePt<-2,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2,-2, 0)); + mValues[FourthDensePt<-1,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1,-2, 0)); + mValues[FourthDensePt< 0,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 0)); + mValues[FourthDensePt< 1,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1,-2, 0)); + mValues[FourthDensePt< 2,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2,-2, 0)); + + mValues[FourthDensePt<-2, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 2)); + mValues[FourthDensePt<-1, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 2)); + mValues[FourthDensePt< 0, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 2)); + mValues[FourthDensePt< 1, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 2)); + mValues[FourthDensePt< 2, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 2)); + + mValues[FourthDensePt<-2, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 1)); + mValues[FourthDensePt<-1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 1)); + mValues[FourthDensePt< 0, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + mValues[FourthDensePt< 1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 1)); + mValues[FourthDensePt< 2, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 1)); + + mValues[FourthDensePt<-2, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0,-1)); + mValues[FourthDensePt<-1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0,-1)); + mValues[FourthDensePt< 0, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0,-1)); + mValues[FourthDensePt< 1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0,-1)); + mValues[FourthDensePt< 2, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0,-1)); + + mValues[FourthDensePt<-2, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0,-2)); + mValues[FourthDensePt<-1, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0,-2)); + mValues[FourthDensePt< 0, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0,-2)); + mValues[FourthDensePt< 1, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0,-2)); + mValues[FourthDensePt< 2, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0,-2)); + + + mValues[FourthDensePt< 0,-2, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 2)); + mValues[FourthDensePt< 0,-1, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 2)); + mValues[FourthDensePt< 0, 1, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 2)); + mValues[FourthDensePt< 0, 2, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 2)); + + mValues[FourthDensePt< 0,-2, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 1)); + mValues[FourthDensePt< 0,-1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 1)); + mValues[FourthDensePt< 0, 1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 1)); + mValues[FourthDensePt< 0, 2, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 1)); + + mValues[FourthDensePt< 0,-2,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2,-1)); + mValues[FourthDensePt< 0,-1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1,-1)); + mValues[FourthDensePt< 0, 1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1,-1)); + mValues[FourthDensePt< 0, 2,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2,-1)); + + mValues[FourthDensePt< 0,-2,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2,-2)); + mValues[FourthDensePt< 0,-1,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1,-2)); + mValues[FourthDensePt< 0, 1,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1,-2)); + mValues[FourthDensePt< 0, 2,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2,-2)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// FourthOrderDenseStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the dense point stencil + template struct NineteenPt {}; + template<> struct NineteenPt< 0, 0, 0> { enum { idx = 0 }; }; + + template<> struct NineteenPt< 1, 0, 0> { enum { idx = 1 }; }; + template<> struct NineteenPt< 0, 1, 0> { enum { idx = 2 }; }; + template<> struct NineteenPt< 0, 0, 1> { enum { idx = 3 }; }; + + template<> struct NineteenPt<-1, 0, 0> { enum { idx = 4 }; }; + template<> struct NineteenPt< 0,-1, 0> { enum { idx = 5 }; }; + template<> struct NineteenPt< 0, 0,-1> { enum { idx = 6 }; }; + + template<> struct NineteenPt< 2, 0, 0> { enum { idx = 7 }; }; + template<> struct NineteenPt< 0, 2, 0> { enum { idx = 8 }; }; + template<> struct NineteenPt< 0, 0, 2> { enum { idx = 9 }; }; + + template<> struct NineteenPt<-2, 0, 0> { enum { idx = 10 }; }; + template<> struct NineteenPt< 0,-2, 0> { enum { idx = 11 }; }; + template<> struct NineteenPt< 0, 0,-2> { enum { idx = 12 }; }; + + template<> struct NineteenPt< 3, 0, 0> { enum { idx = 13 }; }; + template<> struct NineteenPt< 0, 3, 0> { enum { idx = 14 }; }; + template<> struct NineteenPt< 0, 0, 3> { enum { idx = 15 }; }; + + template<> struct NineteenPt<-3, 0, 0> { enum { idx = 16 }; }; + template<> struct NineteenPt< 0,-3, 0> { enum { idx = 17 }; }; + template<> struct NineteenPt< 0, 0,-3> { enum { idx = 18 }; }; + +} + + +template +class NineteenPointStencil + : public BaseStencil, GridT, IsSafe> +{ + typedef NineteenPointStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 19; + + NineteenPointStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return NineteenPt::idx; } + +private: + inline void init(const Coord& ijk) + { + mValues[NineteenPt< 3, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0, 0)); + mValues[NineteenPt< 2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 0)); + mValues[NineteenPt< 1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[NineteenPt<-1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[NineteenPt<-2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 0)); + mValues[NineteenPt<-3, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0, 0)); + + mValues[NineteenPt< 0, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3, 0)); + mValues[NineteenPt< 0, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 0)); + mValues[NineteenPt< 0, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[NineteenPt< 0,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -1, 0)); + mValues[NineteenPt< 0,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -2, 0)); + mValues[NineteenPt< 0,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, -3, 0)); + + mValues[NineteenPt< 0, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 3)); + mValues[NineteenPt< 0, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 2)); + mValues[NineteenPt< 0, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + mValues[NineteenPt< 0, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -1)); + mValues[NineteenPt< 0, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -2)); + mValues[NineteenPt< 0, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, -3)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// NineteenPointStencil class + + +//////////////////////////////////////// + + +namespace { // anonymous namespace for stencil-layout map + + // the 4th-order dense point stencil + template struct SixthDensePt { }; + template<> struct SixthDensePt< 0, 0, 0> { enum { idx = 0 }; }; + + template<> struct SixthDensePt<-3, 3, 0> { enum { idx = 1 }; }; + template<> struct SixthDensePt<-2, 3, 0> { enum { idx = 2 }; }; + template<> struct SixthDensePt<-1, 3, 0> { enum { idx = 3 }; }; + template<> struct SixthDensePt< 0, 3, 0> { enum { idx = 4 }; }; + template<> struct SixthDensePt< 1, 3, 0> { enum { idx = 5 }; }; + template<> struct SixthDensePt< 2, 3, 0> { enum { idx = 6 }; }; + template<> struct SixthDensePt< 3, 3, 0> { enum { idx = 7 }; }; + + template<> struct SixthDensePt<-3, 2, 0> { enum { idx = 8 }; }; + template<> struct SixthDensePt<-2, 2, 0> { enum { idx = 9 }; }; + template<> struct SixthDensePt<-1, 2, 0> { enum { idx = 10 }; }; + template<> struct SixthDensePt< 0, 2, 0> { enum { idx = 11 }; }; + template<> struct SixthDensePt< 1, 2, 0> { enum { idx = 12 }; }; + template<> struct SixthDensePt< 2, 2, 0> { enum { idx = 13 }; }; + template<> struct SixthDensePt< 3, 2, 0> { enum { idx = 14 }; }; + + template<> struct SixthDensePt<-3, 1, 0> { enum { idx = 15 }; }; + template<> struct SixthDensePt<-2, 1, 0> { enum { idx = 16 }; }; + template<> struct SixthDensePt<-1, 1, 0> { enum { idx = 17 }; }; + template<> struct SixthDensePt< 0, 1, 0> { enum { idx = 18 }; }; + template<> struct SixthDensePt< 1, 1, 0> { enum { idx = 19 }; }; + template<> struct SixthDensePt< 2, 1, 0> { enum { idx = 20 }; }; + template<> struct SixthDensePt< 3, 1, 0> { enum { idx = 21 }; }; + + template<> struct SixthDensePt<-3, 0, 0> { enum { idx = 22 }; }; + template<> struct SixthDensePt<-2, 0, 0> { enum { idx = 23 }; }; + template<> struct SixthDensePt<-1, 0, 0> { enum { idx = 24 }; }; + template<> struct SixthDensePt< 1, 0, 0> { enum { idx = 25 }; }; + template<> struct SixthDensePt< 2, 0, 0> { enum { idx = 26 }; }; + template<> struct SixthDensePt< 3, 0, 0> { enum { idx = 27 }; }; + + + template<> struct SixthDensePt<-3,-1, 0> { enum { idx = 28 }; }; + template<> struct SixthDensePt<-2,-1, 0> { enum { idx = 29 }; }; + template<> struct SixthDensePt<-1,-1, 0> { enum { idx = 30 }; }; + template<> struct SixthDensePt< 0,-1, 0> { enum { idx = 31 }; }; + template<> struct SixthDensePt< 1,-1, 0> { enum { idx = 32 }; }; + template<> struct SixthDensePt< 2,-1, 0> { enum { idx = 33 }; }; + template<> struct SixthDensePt< 3,-1, 0> { enum { idx = 34 }; }; + + + template<> struct SixthDensePt<-3,-2, 0> { enum { idx = 35 }; }; + template<> struct SixthDensePt<-2,-2, 0> { enum { idx = 36 }; }; + template<> struct SixthDensePt<-1,-2, 0> { enum { idx = 37 }; }; + template<> struct SixthDensePt< 0,-2, 0> { enum { idx = 38 }; }; + template<> struct SixthDensePt< 1,-2, 0> { enum { idx = 39 }; }; + template<> struct SixthDensePt< 2,-2, 0> { enum { idx = 40 }; }; + template<> struct SixthDensePt< 3,-2, 0> { enum { idx = 41 }; }; + + + template<> struct SixthDensePt<-3,-3, 0> { enum { idx = 42 }; }; + template<> struct SixthDensePt<-2,-3, 0> { enum { idx = 43 }; }; + template<> struct SixthDensePt<-1,-3, 0> { enum { idx = 44 }; }; + template<> struct SixthDensePt< 0,-3, 0> { enum { idx = 45 }; }; + template<> struct SixthDensePt< 1,-3, 0> { enum { idx = 46 }; }; + template<> struct SixthDensePt< 2,-3, 0> { enum { idx = 47 }; }; + template<> struct SixthDensePt< 3,-3, 0> { enum { idx = 48 }; }; + + + template<> struct SixthDensePt<-3, 0, 3> { enum { idx = 49 }; }; + template<> struct SixthDensePt<-2, 0, 3> { enum { idx = 50 }; }; + template<> struct SixthDensePt<-1, 0, 3> { enum { idx = 51 }; }; + template<> struct SixthDensePt< 0, 0, 3> { enum { idx = 52 }; }; + template<> struct SixthDensePt< 1, 0, 3> { enum { idx = 53 }; }; + template<> struct SixthDensePt< 2, 0, 3> { enum { idx = 54 }; }; + template<> struct SixthDensePt< 3, 0, 3> { enum { idx = 55 }; }; + + + template<> struct SixthDensePt<-3, 0, 2> { enum { idx = 56 }; }; + template<> struct SixthDensePt<-2, 0, 2> { enum { idx = 57 }; }; + template<> struct SixthDensePt<-1, 0, 2> { enum { idx = 58 }; }; + template<> struct SixthDensePt< 0, 0, 2> { enum { idx = 59 }; }; + template<> struct SixthDensePt< 1, 0, 2> { enum { idx = 60 }; }; + template<> struct SixthDensePt< 2, 0, 2> { enum { idx = 61 }; }; + template<> struct SixthDensePt< 3, 0, 2> { enum { idx = 62 }; }; + + template<> struct SixthDensePt<-3, 0, 1> { enum { idx = 63 }; }; + template<> struct SixthDensePt<-2, 0, 1> { enum { idx = 64 }; }; + template<> struct SixthDensePt<-1, 0, 1> { enum { idx = 65 }; }; + template<> struct SixthDensePt< 0, 0, 1> { enum { idx = 66 }; }; + template<> struct SixthDensePt< 1, 0, 1> { enum { idx = 67 }; }; + template<> struct SixthDensePt< 2, 0, 1> { enum { idx = 68 }; }; + template<> struct SixthDensePt< 3, 0, 1> { enum { idx = 69 }; }; + + + template<> struct SixthDensePt<-3, 0,-1> { enum { idx = 70 }; }; + template<> struct SixthDensePt<-2, 0,-1> { enum { idx = 71 }; }; + template<> struct SixthDensePt<-1, 0,-1> { enum { idx = 72 }; }; + template<> struct SixthDensePt< 0, 0,-1> { enum { idx = 73 }; }; + template<> struct SixthDensePt< 1, 0,-1> { enum { idx = 74 }; }; + template<> struct SixthDensePt< 2, 0,-1> { enum { idx = 75 }; }; + template<> struct SixthDensePt< 3, 0,-1> { enum { idx = 76 }; }; + + + template<> struct SixthDensePt<-3, 0,-2> { enum { idx = 77 }; }; + template<> struct SixthDensePt<-2, 0,-2> { enum { idx = 78 }; }; + template<> struct SixthDensePt<-1, 0,-2> { enum { idx = 79 }; }; + template<> struct SixthDensePt< 0, 0,-2> { enum { idx = 80 }; }; + template<> struct SixthDensePt< 1, 0,-2> { enum { idx = 81 }; }; + template<> struct SixthDensePt< 2, 0,-2> { enum { idx = 82 }; }; + template<> struct SixthDensePt< 3, 0,-2> { enum { idx = 83 }; }; + + + template<> struct SixthDensePt<-3, 0,-3> { enum { idx = 84 }; }; + template<> struct SixthDensePt<-2, 0,-3> { enum { idx = 85 }; }; + template<> struct SixthDensePt<-1, 0,-3> { enum { idx = 86 }; }; + template<> struct SixthDensePt< 0, 0,-3> { enum { idx = 87 }; }; + template<> struct SixthDensePt< 1, 0,-3> { enum { idx = 88 }; }; + template<> struct SixthDensePt< 2, 0,-3> { enum { idx = 89 }; }; + template<> struct SixthDensePt< 3, 0,-3> { enum { idx = 90 }; }; + + + template<> struct SixthDensePt< 0,-3, 3> { enum { idx = 91 }; }; + template<> struct SixthDensePt< 0,-2, 3> { enum { idx = 92 }; }; + template<> struct SixthDensePt< 0,-1, 3> { enum { idx = 93 }; }; + template<> struct SixthDensePt< 0, 1, 3> { enum { idx = 94 }; }; + template<> struct SixthDensePt< 0, 2, 3> { enum { idx = 95 }; }; + template<> struct SixthDensePt< 0, 3, 3> { enum { idx = 96 }; }; + + template<> struct SixthDensePt< 0,-3, 2> { enum { idx = 97 }; }; + template<> struct SixthDensePt< 0,-2, 2> { enum { idx = 98 }; }; + template<> struct SixthDensePt< 0,-1, 2> { enum { idx = 99 }; }; + template<> struct SixthDensePt< 0, 1, 2> { enum { idx = 100 }; }; + template<> struct SixthDensePt< 0, 2, 2> { enum { idx = 101 }; }; + template<> struct SixthDensePt< 0, 3, 2> { enum { idx = 102 }; }; + + template<> struct SixthDensePt< 0,-3, 1> { enum { idx = 103 }; }; + template<> struct SixthDensePt< 0,-2, 1> { enum { idx = 104 }; }; + template<> struct SixthDensePt< 0,-1, 1> { enum { idx = 105 }; }; + template<> struct SixthDensePt< 0, 1, 1> { enum { idx = 106 }; }; + template<> struct SixthDensePt< 0, 2, 1> { enum { idx = 107 }; }; + template<> struct SixthDensePt< 0, 3, 1> { enum { idx = 108 }; }; + + template<> struct SixthDensePt< 0,-3,-1> { enum { idx = 109 }; }; + template<> struct SixthDensePt< 0,-2,-1> { enum { idx = 110 }; }; + template<> struct SixthDensePt< 0,-1,-1> { enum { idx = 111 }; }; + template<> struct SixthDensePt< 0, 1,-1> { enum { idx = 112 }; }; + template<> struct SixthDensePt< 0, 2,-1> { enum { idx = 113 }; }; + template<> struct SixthDensePt< 0, 3,-1> { enum { idx = 114 }; }; + + template<> struct SixthDensePt< 0,-3,-2> { enum { idx = 115 }; }; + template<> struct SixthDensePt< 0,-2,-2> { enum { idx = 116 }; }; + template<> struct SixthDensePt< 0,-1,-2> { enum { idx = 117 }; }; + template<> struct SixthDensePt< 0, 1,-2> { enum { idx = 118 }; }; + template<> struct SixthDensePt< 0, 2,-2> { enum { idx = 119 }; }; + template<> struct SixthDensePt< 0, 3,-2> { enum { idx = 120 }; }; + + template<> struct SixthDensePt< 0,-3,-3> { enum { idx = 121 }; }; + template<> struct SixthDensePt< 0,-2,-3> { enum { idx = 122 }; }; + template<> struct SixthDensePt< 0,-1,-3> { enum { idx = 123 }; }; + template<> struct SixthDensePt< 0, 1,-3> { enum { idx = 124 }; }; + template<> struct SixthDensePt< 0, 2,-3> { enum { idx = 125 }; }; + template<> struct SixthDensePt< 0, 3,-3> { enum { idx = 126 }; }; + +} + + +template +class SixthOrderDenseStencil + : public BaseStencil, GridT, IsSafe> +{ + typedef SixthOrderDenseStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 127; + + SixthOrderDenseStencil(const GridType& grid): BaseType(grid, SIZE) {} + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return SixthDensePt::idx; } + +private: + inline void init(const Coord& ijk) + { + mValues[SixthDensePt<-3, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3, 3, 0)); + mValues[SixthDensePt<-2, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 3, 0)); + mValues[SixthDensePt<-1, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 3, 0)); + mValues[SixthDensePt< 0, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3, 0)); + mValues[SixthDensePt< 1, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 3, 0)); + mValues[SixthDensePt< 2, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 3, 0)); + mValues[SixthDensePt< 3, 3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3, 3, 0)); + + mValues[SixthDensePt<-3, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3, 2, 0)); + mValues[SixthDensePt<-2, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 2, 0)); + mValues[SixthDensePt<-1, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 2, 0)); + mValues[SixthDensePt< 0, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 0)); + mValues[SixthDensePt< 1, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 2, 0)); + mValues[SixthDensePt< 2, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 2, 0)); + mValues[SixthDensePt< 3, 2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3, 2, 0)); + + mValues[SixthDensePt<-3, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3, 1, 0)); + mValues[SixthDensePt<-2, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 1, 0)); + mValues[SixthDensePt<-1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 1, 0)); + mValues[SixthDensePt< 0, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[SixthDensePt< 1, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 1, 0)); + mValues[SixthDensePt< 2, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 1, 0)); + mValues[SixthDensePt< 3, 1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3, 1, 0)); + + mValues[SixthDensePt<-3, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0, 0)); + mValues[SixthDensePt<-2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 0)); + mValues[SixthDensePt<-1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[SixthDensePt< 1, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[SixthDensePt< 2, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 0)); + mValues[SixthDensePt< 3, 0, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0, 0)); + + mValues[SixthDensePt<-3,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3,-1, 0)); + mValues[SixthDensePt<-2,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2,-1, 0)); + mValues[SixthDensePt<-1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1,-1, 0)); + mValues[SixthDensePt< 0,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 0)); + mValues[SixthDensePt< 1,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1,-1, 0)); + mValues[SixthDensePt< 2,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2,-1, 0)); + mValues[SixthDensePt< 3,-1, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3,-1, 0)); + + mValues[SixthDensePt<-3,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3,-2, 0)); + mValues[SixthDensePt<-2,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2,-2, 0)); + mValues[SixthDensePt<-1,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1,-2, 0)); + mValues[SixthDensePt< 0,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 0)); + mValues[SixthDensePt< 1,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1,-2, 0)); + mValues[SixthDensePt< 2,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2,-2, 0)); + mValues[SixthDensePt< 3,-2, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3,-2, 0)); + + mValues[SixthDensePt<-3,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-3,-3, 0)); + mValues[SixthDensePt<-2,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-2,-3, 0)); + mValues[SixthDensePt<-1,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy(-1,-3, 0)); + mValues[SixthDensePt< 0,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3, 0)); + mValues[SixthDensePt< 1,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 1,-3, 0)); + mValues[SixthDensePt< 2,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 2,-3, 0)); + mValues[SixthDensePt< 3,-3, 0>::idx] = mAcc.getValue(ijk.offsetBy( 3,-3, 0)); + + mValues[SixthDensePt<-3, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0, 3)); + mValues[SixthDensePt<-2, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 3)); + mValues[SixthDensePt<-1, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 3)); + mValues[SixthDensePt< 0, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 3)); + mValues[SixthDensePt< 1, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 3)); + mValues[SixthDensePt< 2, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 3)); + mValues[SixthDensePt< 3, 0, 3>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0, 3)); + + mValues[SixthDensePt<-3, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0, 2)); + mValues[SixthDensePt<-2, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 2)); + mValues[SixthDensePt<-1, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 2)); + mValues[SixthDensePt< 0, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 2)); + mValues[SixthDensePt< 1, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 2)); + mValues[SixthDensePt< 2, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 2)); + mValues[SixthDensePt< 3, 0, 2>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0, 2)); + + mValues[SixthDensePt<-3, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0, 1)); + mValues[SixthDensePt<-2, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0, 1)); + mValues[SixthDensePt<-1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0, 1)); + mValues[SixthDensePt< 0, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + mValues[SixthDensePt< 1, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0, 1)); + mValues[SixthDensePt< 2, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0, 1)); + mValues[SixthDensePt< 3, 0, 1>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0, 1)); + + mValues[SixthDensePt<-3, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0,-1)); + mValues[SixthDensePt<-2, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0,-1)); + mValues[SixthDensePt<-1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0,-1)); + mValues[SixthDensePt< 0, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0,-1)); + mValues[SixthDensePt< 1, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0,-1)); + mValues[SixthDensePt< 2, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0,-1)); + mValues[SixthDensePt< 3, 0,-1>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0,-1)); + + mValues[SixthDensePt<-3, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0,-2)); + mValues[SixthDensePt<-2, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0,-2)); + mValues[SixthDensePt<-1, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0,-2)); + mValues[SixthDensePt< 0, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0,-2)); + mValues[SixthDensePt< 1, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0,-2)); + mValues[SixthDensePt< 2, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0,-2)); + mValues[SixthDensePt< 3, 0,-2>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0,-2)); + + mValues[SixthDensePt<-3, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy(-3, 0,-3)); + mValues[SixthDensePt<-2, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy(-2, 0,-3)); + mValues[SixthDensePt<-1, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy(-1, 0,-3)); + mValues[SixthDensePt< 0, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 0,-3)); + mValues[SixthDensePt< 1, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy( 1, 0,-3)); + mValues[SixthDensePt< 2, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy( 2, 0,-3)); + mValues[SixthDensePt< 3, 0,-3>::idx] = mAcc.getValue(ijk.offsetBy( 3, 0,-3)); + + mValues[SixthDensePt< 0,-3, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3, 3)); + mValues[SixthDensePt< 0,-2, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 3)); + mValues[SixthDensePt< 0,-1, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 3)); + mValues[SixthDensePt< 0, 1, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 3)); + mValues[SixthDensePt< 0, 2, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 3)); + mValues[SixthDensePt< 0, 3, 3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3, 3)); + + mValues[SixthDensePt< 0,-3, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3, 2)); + mValues[SixthDensePt< 0,-2, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 2)); + mValues[SixthDensePt< 0,-1, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 2)); + mValues[SixthDensePt< 0, 1, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 2)); + mValues[SixthDensePt< 0, 2, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 2)); + mValues[SixthDensePt< 0, 3, 2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3, 2)); + + mValues[SixthDensePt< 0,-3, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3, 1)); + mValues[SixthDensePt< 0,-2, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2, 1)); + mValues[SixthDensePt< 0,-1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1, 1)); + mValues[SixthDensePt< 0, 1, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1, 1)); + mValues[SixthDensePt< 0, 2, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2, 1)); + mValues[SixthDensePt< 0, 3, 1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3, 1)); + + mValues[SixthDensePt< 0,-3,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3,-1)); + mValues[SixthDensePt< 0,-2,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2,-1)); + mValues[SixthDensePt< 0,-1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1,-1)); + mValues[SixthDensePt< 0, 1,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1,-1)); + mValues[SixthDensePt< 0, 2,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2,-1)); + mValues[SixthDensePt< 0, 3,-1>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3,-1)); + + mValues[SixthDensePt< 0,-3,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3,-2)); + mValues[SixthDensePt< 0,-2,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2,-2)); + mValues[SixthDensePt< 0,-1,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1,-2)); + mValues[SixthDensePt< 0, 1,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1,-2)); + mValues[SixthDensePt< 0, 2,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2,-2)); + mValues[SixthDensePt< 0, 3,-2>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3,-2)); + + mValues[SixthDensePt< 0,-3,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-3,-3)); + mValues[SixthDensePt< 0,-2,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-2,-3)); + mValues[SixthDensePt< 0,-1,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0,-1,-3)); + mValues[SixthDensePt< 0, 1,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 1,-3)); + mValues[SixthDensePt< 0, 2,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 2,-3)); + mValues[SixthDensePt< 0, 3,-3>::idx] = mAcc.getValue(ijk.offsetBy( 0, 3,-3)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; +};// SixthOrderDenseStencil class + + +////////////////////////////////////////////////////////////////////// + +namespace { // anonymous namespace for stencil-layout map + + // the seven point stencil with a different layout from SevenPt + template struct GradPt {}; + template<> struct GradPt< 0, 0, 0> { enum { idx = 0 }; }; + template<> struct GradPt< 1, 0, 0> { enum { idx = 2 }; }; + template<> struct GradPt< 0, 1, 0> { enum { idx = 4 }; }; + template<> struct GradPt< 0, 0, 1> { enum { idx = 6 }; }; + template<> struct GradPt<-1, 0, 0> { enum { idx = 1 }; }; + template<> struct GradPt< 0,-1, 0> { enum { idx = 3 }; }; + template<> struct GradPt< 0, 0,-1> { enum { idx = 5 }; }; +} + +/// This is a simple 7-point nearest neighbor stencil that supports +/// gradient by second-order central differencing, first-order upwinding, +/// Laplacian, closest-point transform and zero-crossing test. +/// +/// @note For optimal random access performance this class +/// includes its own grid accessor. +template +class GradStencil : public BaseStencil, GridT, IsSafe> +{ + typedef GradStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 7; + + GradStencil(const GridType& grid) + : BaseType(grid, SIZE) + , mInv2Dx(ValueType(0.5 / grid.voxelSize()[0])) + , mInvDx2(ValueType(4.0 * mInv2Dx * mInv2Dx)) + { + } + + GradStencil(const GridType& grid, Real dx) + : BaseType(grid, SIZE) + , mInv2Dx(ValueType(0.5 / dx)) + , mInvDx2(ValueType(4.0 * mInv2Dx * mInv2Dx)) + { + } + + /// @brief Return the norm square of the single-sided upwind gradient + /// (computed via Godunov's scheme) at the previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType normSqGrad() const + { + return mInvDx2 * math::GodunovsNormSqrd(mValues[0] > zeroVal(), + mValues[0] - mValues[1], + mValues[2] - mValues[0], + mValues[0] - mValues[3], + mValues[4] - mValues[0], + mValues[0] - mValues[5], + mValues[6] - mValues[0]); + } + + /// @brief Return the gradient computed at the previously buffered + /// location by second order central differencing. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline math::Vec3 gradient() const + { + return math::Vec3(mValues[2] - mValues[1], + mValues[4] - mValues[3], + mValues[6] - mValues[5])*mInv2Dx; + } + /// @brief Return the first-order upwind gradient corresponding to the direction V. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline math::Vec3 gradient(const math::Vec3& V) const + { + return math::Vec3( + V[0]>0 ? mValues[0] - mValues[1] : mValues[2] - mValues[0], + V[1]>0 ? mValues[0] - mValues[3] : mValues[4] - mValues[0], + V[2]>0 ? mValues[0] - mValues[5] : mValues[6] - mValues[0])*2*mInv2Dx; + } + + /// Return the Laplacian computed at the previously buffered + /// location by second-order central differencing. + inline ValueType laplacian() const + { + return mInvDx2 * (mValues[1] + mValues[2] + + mValues[3] + mValues[4] + + mValues[5] + mValues[6] - 6*mValues[0]); + } + + /// Return @c true if the sign of the value at the center point of the stencil + /// is different from the signs of any of its six nearest neighbors. + inline bool zeroCrossing() const + { + const typename BaseType::BufferType& v = mValues; + return (v[0]>0 ? (v[1]<0 || v[2]<0 || v[3]<0 || v[4]<0 || v[5]<0 || v[6]<0) + : (v[1]>0 || v[2]>0 || v[3]>0 || v[4]>0 || v[5]>0 || v[6]>0)); + } + + /// @brief Compute the closest-point transform to a level set. + /// @return the closest point in index space to the surface + /// from which the level set was derived. + /// + /// @note This method assumes that the grid represents a level set + /// with distances in world units and a simple affine transfrom + /// with uniform scaling. + inline math::Vec3 cpt() + { + const Coord& ijk = BaseType::getCenterCoord(); + const ValueType d = ValueType(mValues[0] * 0.5 * mInvDx2); // distance in voxels / (2dx^2) + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value = math::Vec3( ijk[0] - d*(mValues[2] - mValues[1]), + ijk[1] - d*(mValues[4] - mValues[3]), + ijk[2] - d*(mValues[6] - mValues[5])); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; + } + + /// Return linear offset for the specified stencil point relative to its center + template + unsigned int pos() const { return GradPt::idx; } + +private: + + inline void init(const Coord& ijk) + { + BaseType::template setValue<-1, 0, 0>(mAcc.getValue(ijk.offsetBy(-1, 0, 0))); + BaseType::template setValue< 1, 0, 0>(mAcc.getValue(ijk.offsetBy( 1, 0, 0))); + + BaseType::template setValue< 0,-1, 0>(mAcc.getValue(ijk.offsetBy( 0,-1, 0))); + BaseType::template setValue< 0, 1, 0>(mAcc.getValue(ijk.offsetBy( 0, 1, 0))); + + BaseType::template setValue< 0, 0,-1>(mAcc.getValue(ijk.offsetBy( 0, 0,-1))); + BaseType::template setValue< 0, 0, 1>(mAcc.getValue(ijk.offsetBy( 0, 0, 1))); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; + const ValueType mInv2Dx, mInvDx2; +}; // GradStencil class + +//////////////////////////////////////// + + +/// @brief This is a special 19-point stencil that supports optimal fifth-order WENO +/// upwinding, second-order central differencing, Laplacian, and zero-crossing test. +/// +/// @note For optimal random access performance this class +/// includes its own grid accessor. +template +class WenoStencil: public BaseStencil, GridT, IsSafe> +{ + typedef WenoStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + static const int SIZE = 19; + + WenoStencil(const GridType& grid) + : BaseType(grid, SIZE) + , mDx2(ValueType(math::Pow2(grid.voxelSize()[0]))) + , mInv2Dx(ValueType(0.5 / grid.voxelSize()[0])) + , mInvDx2(ValueType(1.0 / mDx2)) + { + } + + WenoStencil(const GridType& grid, Real dx) + : BaseType(grid, SIZE) + , mDx2(ValueType(dx * dx)) + , mInv2Dx(ValueType(0.5 / dx)) + , mInvDx2(ValueType(1.0 / mDx2)) + { + } + + /// @brief Return the norm-square of the WENO upwind gradient (computed via + /// WENO upwinding and Godunov's scheme) at the previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType normSqGrad(const ValueType &isoValue = zeroVal()) const + { + const typename BaseType::BufferType& v = mValues; +#ifdef DWA_OPENVDB + // SSE optimized + const simd::Float4 + v1(v[2]-v[1], v[ 8]-v[ 7], v[14]-v[13], 0), + v2(v[3]-v[2], v[ 9]-v[ 8], v[15]-v[14], 0), + v3(v[0]-v[3], v[ 0]-v[ 9], v[ 0]-v[15], 0), + v4(v[4]-v[0], v[10]-v[ 0], v[16]-v[ 0], 0), + v5(v[5]-v[4], v[11]-v[10], v[17]-v[16], 0), + v6(v[6]-v[5], v[12]-v[11], v[18]-v[17], 0), + dP_m = math::WENO5(v1, v2, v3, v4, v5, mDx2), + dP_p = math::WENO5(v6, v5, v4, v3, v2, mDx2); + + return mInvDx2 * math::GodunovsNormSqrd(mValues[0] > isoValue, dP_m, dP_p); +#else + const Real + dP_xm = math::WENO5(v[ 2]-v[ 1],v[ 3]-v[ 2],v[ 0]-v[ 3],v[ 4]-v[ 0],v[ 5]-v[ 4],mDx2), + dP_xp = math::WENO5(v[ 6]-v[ 5],v[ 5]-v[ 4],v[ 4]-v[ 0],v[ 0]-v[ 3],v[ 3]-v[ 2],mDx2), + dP_ym = math::WENO5(v[ 8]-v[ 7],v[ 9]-v[ 8],v[ 0]-v[ 9],v[10]-v[ 0],v[11]-v[10],mDx2), + dP_yp = math::WENO5(v[12]-v[11],v[11]-v[10],v[10]-v[ 0],v[ 0]-v[ 9],v[ 9]-v[ 8],mDx2), + dP_zm = math::WENO5(v[14]-v[13],v[15]-v[14],v[ 0]-v[15],v[16]-v[ 0],v[17]-v[16],mDx2), + dP_zp = math::WENO5(v[18]-v[17],v[17]-v[16],v[16]-v[ 0],v[ 0]-v[15],v[15]-v[14],mDx2); + return static_cast( + mInvDx2*math::GodunovsNormSqrd(v[0]>isoValue, dP_xm, dP_xp, dP_ym, dP_yp, dP_zm, dP_zp)); +#endif + } + + /// Return the optimal fifth-order upwind gradient corresponding to the + /// direction V. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline math::Vec3 gradient(const math::Vec3& V) const + { + const typename BaseType::BufferType& v = mValues; + return 2*mInv2Dx * math::Vec3( + V[0]>0 ? math::WENO5(v[ 2]-v[ 1],v[ 3]-v[ 2],v[ 0]-v[ 3], v[ 4]-v[ 0],v[ 5]-v[ 4],mDx2) + : math::WENO5(v[ 6]-v[ 5],v[ 5]-v[ 4],v[ 4]-v[ 0], v[ 0]-v[ 3],v[ 3]-v[ 2],mDx2), + V[1]>0 ? math::WENO5(v[ 8]-v[ 7],v[ 9]-v[ 8],v[ 0]-v[ 9], v[10]-v[ 0],v[11]-v[10],mDx2) + : math::WENO5(v[12]-v[11],v[11]-v[10],v[10]-v[ 0], v[ 0]-v[ 9],v[ 9]-v[ 8],mDx2), + V[2]>0 ? math::WENO5(v[14]-v[13],v[15]-v[14],v[ 0]-v[15], v[16]-v[ 0],v[17]-v[16],mDx2) + : math::WENO5(v[18]-v[17],v[17]-v[16],v[16]-v[ 0], v[ 0]-v[15],v[15]-v[14],mDx2)); + } + /// Return the gradient computed at the previously buffered + /// location by second-order central differencing. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline math::Vec3 gradient() const + { + return mInv2Dx * math::Vec3(mValues[ 4] - mValues[ 3], + mValues[10] - mValues[ 9], + mValues[16] - mValues[15]); + } + + /// Return the Laplacian computed at the previously buffered + /// location by second-order central differencing. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType laplacian() const + { + return mInvDx2 * ( + mValues[ 3] + mValues[ 4] + + mValues[ 9] + mValues[10] + + mValues[15] + mValues[16] - 6*mValues[0]); + } + + /// Return @c true if the sign of the value at the center point of the stencil + /// differs from the sign of any of its six nearest neighbors + inline bool zeroCrossing() const + { + const typename BaseType::BufferType& v = mValues; + return (v[ 0]>0 ? (v[ 3]<0 || v[ 4]<0 || v[ 9]<0 || v[10]<0 || v[15]<0 || v[16]<0) + : (v[ 3]>0 || v[ 4]>0 || v[ 9]>0 || v[10]>0 || v[15]>0 || v[16]>0)); + } + +private: + inline void init(const Coord& ijk) + { + mValues[ 1] = mAcc.getValue(ijk.offsetBy(-3, 0, 0)); + mValues[ 2] = mAcc.getValue(ijk.offsetBy(-2, 0, 0)); + mValues[ 3] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[ 4] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + mValues[ 5] = mAcc.getValue(ijk.offsetBy( 2, 0, 0)); + mValues[ 6] = mAcc.getValue(ijk.offsetBy( 3, 0, 0)); + + mValues[ 7] = mAcc.getValue(ijk.offsetBy( 0, -3, 0)); + mValues[ 8] = mAcc.getValue(ijk.offsetBy( 0, -2, 0)); + mValues[ 9] = mAcc.getValue(ijk.offsetBy( 0, -1, 0)); + mValues[10] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + mValues[11] = mAcc.getValue(ijk.offsetBy( 0, 2, 0)); + mValues[12] = mAcc.getValue(ijk.offsetBy( 0, 3, 0)); + + mValues[13] = mAcc.getValue(ijk.offsetBy( 0, 0, -3)); + mValues[14] = mAcc.getValue(ijk.offsetBy( 0, 0, -2)); + mValues[15] = mAcc.getValue(ijk.offsetBy( 0, 0, -1)); + mValues[16] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + mValues[17] = mAcc.getValue(ijk.offsetBy( 0, 0, 2)); + mValues[18] = mAcc.getValue(ijk.offsetBy( 0, 0, 3)); + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; + const ValueType mDx2, mInv2Dx, mInvDx2; +}; // WenoStencil class + + +////////////////////////////////////////////////////////////////////// + + +template +class CurvatureStencil: public BaseStencil, GridT, IsSafe> +{ + typedef CurvatureStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridT::ValueType ValueType; + + static const int SIZE = 19; + + CurvatureStencil(const GridType& grid) + : BaseType(grid, SIZE) + , mInv2Dx(ValueType(0.5 / grid.voxelSize()[0])) + , mInvDx2(ValueType(4.0 * mInv2Dx * mInv2Dx)) + { + } + + CurvatureStencil(const GridType& grid, Real dx) + : BaseType(grid, SIZE) + , mInv2Dx(ValueType(0.5 / dx)) + , mInvDx2(ValueType(4.0 * mInv2Dx * mInv2Dx)) + { + } + + /// @brief Return the mean curvature at the previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType meanCurvature() const + { + Real alpha, normGrad; + return this->meanCurvature(alpha, normGrad) ? + ValueType(alpha*mInv2Dx/math::Pow3(normGrad)) : 0; + } + + /// @brief Return the Gaussian curvature at the previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType gaussianCurvature() const + { + Real alpha, normGrad; + return this->gaussianCurvature(alpha, normGrad) ? + ValueType(alpha*mInvDx2/math::Pow4(normGrad)) : 0; + } + + /// @brief Return both the mean and the Gaussian curvature at the + /// previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline void curvatures(ValueType &mean, ValueType& gauss) const + { + Real alphaM, alphaG, normGrad; + if (this->curvatures(alphaM, alphaG, normGrad)) { + mean = ValueType(alphaM*mInv2Dx/math::Pow3(normGrad)); + gauss = ValueType(alphaG*mInvDx2/math::Pow4(normGrad)); + } else { + mean = gauss = 0; + } + } + + /// Return the mean curvature multiplied by the norm of the + /// central-difference gradient. This method is very useful for + /// mean-curvature flow of level sets! + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType meanCurvatureNormGrad() const + { + Real alpha, normGrad; + return this->meanCurvature(alpha, normGrad) ? + ValueType(alpha*mInvDx2/(2*math::Pow2(normGrad))) : 0; + } + + /// Return the mean Gaussian multiplied by the norm of the + /// central-difference gradient. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType gaussianCurvatureNormGrad() const + { + Real alpha, normGrad; + return this->gaussianCurvature(alpha, normGrad) ? + ValueType(2*alpha*mInv2Dx*mInvDx2/math::Pow3(normGrad)) : 0; + } + + /// @brief Return both the mean and the Gaussian curvature at the + /// previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline void curvaturesNormGrad(ValueType &mean, ValueType& gauss) const + { + Real alphaM, alphaG, normGrad; + if (this->curvatures(alphaM, alphaG, normGrad)) { + mean = ValueType(alphaM*mInvDx2/(2*math::Pow2(normGrad))); + gauss = ValueType(2*alphaG*mInv2Dx*mInvDx2/math::Pow3(normGrad)); + } else { + mean = gauss = 0; + } + } + + /// @brief Return the pair (minimum, maximum) principal curvature at the + /// previously buffered location. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline std::pair principalCurvatures() const + { + std::pair pair(0, 0);// min, max + Real alphaM, alphaG, normGrad; + if (this->curvatures(alphaM, alphaG, normGrad)) { + const Real mean = alphaM*mInv2Dx/math::Pow3(normGrad); + const Real tmp = std::sqrt(mean*mean - alphaG*mInvDx2/math::Pow4(normGrad)); + pair.first = ValueType(mean - tmp); + pair.second = ValueType(mean + tmp); + } + return pair;// min, max + } + + /// Return the Laplacian computed at the previously buffered + /// location by second-order central differencing. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline ValueType laplacian() const + { + return mInvDx2 * ( + mValues[1] + mValues[2] + + mValues[3] + mValues[4] + + mValues[5] + mValues[6] - 6*mValues[0]); + } + + /// Return the gradient computed at the previously buffered + /// location by second-order central differencing. + /// + /// @note This method should not be called until the stencil + /// buffer has been populated via a call to moveTo(ijk). + inline math::Vec3 gradient() const + { + return math::Vec3( + mValues[2] - mValues[1], + mValues[4] - mValues[3], + mValues[6] - mValues[5])*mInv2Dx; + } + +private: + inline void init(const Coord &ijk) + { + mValues[ 1] = mAcc.getValue(ijk.offsetBy(-1, 0, 0)); + mValues[ 2] = mAcc.getValue(ijk.offsetBy( 1, 0, 0)); + + mValues[ 3] = mAcc.getValue(ijk.offsetBy( 0, -1, 0)); + mValues[ 4] = mAcc.getValue(ijk.offsetBy( 0, 1, 0)); + + mValues[ 5] = mAcc.getValue(ijk.offsetBy( 0, 0, -1)); + mValues[ 6] = mAcc.getValue(ijk.offsetBy( 0, 0, 1)); + + mValues[ 7] = mAcc.getValue(ijk.offsetBy(-1, -1, 0)); + mValues[ 8] = mAcc.getValue(ijk.offsetBy( 1, -1, 0)); + mValues[ 9] = mAcc.getValue(ijk.offsetBy(-1, 1, 0)); + mValues[10] = mAcc.getValue(ijk.offsetBy( 1, 1, 0)); + + mValues[11] = mAcc.getValue(ijk.offsetBy(-1, 0, -1)); + mValues[12] = mAcc.getValue(ijk.offsetBy( 1, 0, -1)); + mValues[13] = mAcc.getValue(ijk.offsetBy(-1, 0, 1)); + mValues[14] = mAcc.getValue(ijk.offsetBy( 1, 0, 1)); + + mValues[15] = mAcc.getValue(ijk.offsetBy( 0, -1, -1)); + mValues[16] = mAcc.getValue(ijk.offsetBy( 0, 1, -1)); + mValues[17] = mAcc.getValue(ijk.offsetBy( 0, -1, 1)); + mValues[18] = mAcc.getValue(ijk.offsetBy( 0, 1, 1)); + } + + inline Real Dx() const { return 0.5*(mValues[2] - mValues[1]); }// * 1/dx + inline Real Dy() const { return 0.5*(mValues[4] - mValues[3]); }// * 1/dx + inline Real Dz() const { return 0.5*(mValues[6] - mValues[5]); }// * 1/dx + inline Real Dxx() const { return mValues[2] - 2 * mValues[0] + mValues[1]; }// * 1/dx2 + inline Real Dyy() const { return mValues[4] - 2 * mValues[0] + mValues[3]; }// * 1/dx2} + inline Real Dzz() const { return mValues[6] - 2 * mValues[0] + mValues[5]; }// * 1/dx2 + inline Real Dxy() const { return 0.25 * (mValues[10] - mValues[ 8] + mValues[ 7] - mValues[ 9]); }// * 1/dx2 + inline Real Dxz() const { return 0.25 * (mValues[14] - mValues[12] + mValues[11] - mValues[13]); }// * 1/dx2 + inline Real Dyz() const { return 0.25 * (mValues[18] - mValues[16] + mValues[15] - mValues[17]); }// * 1/dx2 + + inline bool meanCurvature(Real& alpha, Real& normGrad) const + { + // For performance all finite differences are unscaled wrt dx + const Real Dx = this->Dx(), Dy = this->Dy(), Dz = this->Dz(), + Dx2 = Dx*Dx, Dy2 = Dy*Dy, Dz2 = Dz*Dz, normGrad2 = Dx2 + Dy2 + Dz2; + if (normGrad2 <= math::Tolerance::value()) { + alpha = normGrad = 0; + return false; + } + const Real Dxx = this->Dxx(), Dyy = this->Dyy(), Dzz = this->Dzz(); + alpha = Dx2*(Dyy + Dzz) + Dy2*(Dxx + Dzz) + Dz2*(Dxx + Dyy) - + 2*(Dx*(Dy*this->Dxy() + Dz*this->Dxz()) + Dy*Dz*this->Dyz());// * 1/dx^4 + normGrad = std::sqrt(normGrad2); // * 1/dx + return true; + } + + inline bool gaussianCurvature(Real& alpha, Real& normGrad) const + { + // For performance all finite differences are unscaled wrt dx + const Real Dx = this->Dx(), Dy = this->Dy(), Dz = this->Dz(), + Dx2 = Dx*Dx, Dy2 = Dy*Dy, Dz2 = Dz*Dz, normGrad2 = Dx2 + Dy2 + Dz2; + if (normGrad2 <= math::Tolerance::value()) { + alpha = normGrad = 0; + return false; + } + const Real Dxx = this->Dxx(), Dyy = this->Dyy(), Dzz = this->Dzz(), + Dxy = this->Dxy(), Dxz = this->Dxz(), Dyz = this->Dyz(); + alpha = Dx2*(Dyy*Dzz - Dyz*Dyz) + Dy2*(Dxx*Dzz - Dxz*Dxz) + Dz2*(Dxx*Dyy - Dxy*Dxy) + + 2*( Dy*Dz*(Dxy*Dxz - Dyz*Dxx) + Dx*Dz*(Dxy*Dyz - Dxz*Dyy) + Dx*Dy*(Dxz*Dyz - Dxy*Dzz) );// * 1/dx^6 + normGrad = std::sqrt(normGrad2); // * 1/dx + return true; + } + inline bool curvatures(Real& alphaM, Real& alphaG, Real& normGrad) const + { + // For performance all finite differences are unscaled wrt dx + const Real Dx = this->Dx(), Dy = this->Dy(), Dz = this->Dz(), + Dx2 = Dx*Dx, Dy2 = Dy*Dy, Dz2 = Dz*Dz, normGrad2 = Dx2 + Dy2 + Dz2; + if (normGrad2 <= math::Tolerance::value()) { + alphaM = alphaG =normGrad = 0; + return false; + } + const Real Dxx = this->Dxx(), Dyy = this->Dyy(), Dzz = this->Dzz(), + Dxy = this->Dxy(), Dxz = this->Dxz(), Dyz = this->Dyz(); + alphaM = Dx2*(Dyy + Dzz) + Dy2*(Dxx + Dzz) + Dz2*(Dxx + Dyy) - + 2*(Dx*(Dy*Dxy + Dz*Dxz) + Dy*Dz*Dyz);// *1/dx^4 + alphaG = Dx2*(Dyy*Dzz - Dyz*Dyz) + Dy2*(Dxx*Dzz - Dxz*Dxz) + Dz2*(Dxx*Dyy - Dxy*Dxy) + + 2*( Dy*Dz*(Dxy*Dxz - Dyz*Dxx) + Dx*Dz*(Dxy*Dyz - Dxz*Dyy) + Dx*Dy*(Dxz*Dyz - Dxy*Dzz) );// *1/dx^6 + normGrad = std::sqrt(normGrad2); // * 1/dx + return true; + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; + const ValueType mInv2Dx, mInvDx2; +}; // CurvatureStencil class + + +////////////////////////////////////////////////////////////////////// + + +/// @brief Dense stencil of a given width +template +class DenseStencil: public BaseStencil, GridT, IsSafe> +{ + typedef DenseStencil SelfT; + typedef BaseStencil BaseType; +public: + typedef GridT GridType; + typedef typename GridT::TreeType TreeType; + typedef typename GridType::ValueType ValueType; + + DenseStencil(const GridType& grid, int halfWidth) + : BaseType(grid, /*size=*/math::Pow3(2 * halfWidth + 1)) + , mHalfWidth(halfWidth) + { + assert(halfWidth>0); + } + + inline const ValueType& getCenterValue() const { return mValues[(mValues.size()-1)>>1]; } + + /// @brief Initialize the stencil buffer with the values of voxel (x, y, z) + /// and its neighbors. + inline void moveTo(const Coord& ijk) + { + BaseType::mCenter = ijk; + this->init(ijk); + } + /// @brief Initialize the stencil buffer with the values of voxel + /// (x, y, z) and its neighbors. + template + inline void moveTo(const IterType& iter) + { + BaseType::mCenter = iter.getCoord(); + this->init(BaseType::mCenter); + } + +private: + /// Initialize the stencil buffer centered at (i, j, k). + /// @warning The center point is NOT at mValues[0] for this DenseStencil! + inline void init(const Coord& ijk) + { + int n = 0; + for (Coord p=ijk.offsetBy(-mHalfWidth), q=ijk.offsetBy(mHalfWidth); p[0] <= q[0]; ++p[0]) { + for (p[1] = ijk[1]-mHalfWidth; p[1] <= q[1]; ++p[1]) { + for (p[2] = ijk[2]-mHalfWidth; p[2] <= q[2]; ++p[2]) { + mValues[n++] = mAcc.getValue(p); + } + } + } + } + + template friend class BaseStencil; // allow base class to call init() + using BaseType::mAcc; + using BaseType::mValues; + const int mHalfWidth; +};// DenseStencil class + + +} // end math namespace +} // namespace OPENVDB_VERSION_NAME +} // end openvdb namespace + +#endif // OPENVDB_MATH_STENCILS_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Transform.cc b/openvdb/math/Transform.cc new file mode 100644 index 00000000..430f9129 --- /dev/null +++ b/openvdb/math/Transform.cc @@ -0,0 +1,547 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Transform.h" +#include "LegacyFrustum.h" + +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + + +//////////////////////////////////////// + + +Transform::Transform(const MapBase::Ptr& map): + mMap(ConstPtrCast(map)) +{ + // auto-convert to simplest type + if (!mMap->isType() && mMap->isLinear()) { + AffineMap::Ptr affine = mMap->getAffineMap(); + mMap = simplify(affine); + } +} + +Transform::Transform(const Transform& other): + mMap(ConstPtrCast(other.baseMap())) +{ +} + + +//////////////////////////////////////// + + +// Factory methods + +Transform::Ptr +Transform::createLinearTransform(double voxelDim) +{ + return Transform::Ptr(new Transform( + MapBase::Ptr(new UniformScaleMap(voxelDim)))); +} + +Transform::Ptr +Transform::createLinearTransform(const Mat4R& m) +{ + return Transform::Ptr(new Transform(MapBase::Ptr(new AffineMap(m)))); +} + +Transform::Ptr +Transform::createFrustumTransform(const BBoxd& bbox, double taper, + double depth, double voxelDim) +{ + return Transform::Ptr(new Transform( + NonlinearFrustumMap(bbox, taper, depth).preScale(Vec3d(voxelDim, voxelDim, voxelDim)))); +} + + +//////////////////////////////////////// + + +void +Transform::read(std::istream& is) +{ + // Read the type name. + Name type = readString(is); + + if (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_NEW_TRANSFORM) { + // Handle old-style transforms. + + if (type == "LinearTransform") { + // First read in the old transform's base class. + Coord tmpMin, tmpMax; + is.read(reinterpret_cast(&tmpMin), sizeof(Coord::ValueType) * 3); + is.read(reinterpret_cast(&tmpMax), sizeof(Coord::ValueType) * 3); + + // Second read in the old linear transform + Mat4d tmpLocalToWorld, tmpWorldToLocal, tmpVoxelToLocal, tmpLocalToVoxel; + + tmpLocalToWorld.read(is); + tmpWorldToLocal.read(is); + tmpVoxelToLocal.read(is); + tmpLocalToVoxel.read(is); + + // Convert and simplify + AffineMap::Ptr affineMap(new AffineMap(tmpVoxelToLocal*tmpLocalToWorld)); + mMap = simplify(affineMap); + + } else if (type == "FrustumTransform") { + + internal::LegacyFrustum legacyFrustum(is); + + CoordBBox bb = legacyFrustum.getBBox(); + BBoxd bbox(bb.min().asVec3d(), bb.max().asVec3d() + /* -Vec3d(1,1,1) */ + ); + double taper = legacyFrustum.getTaper(); + double depth = legacyFrustum.getDepth(); + + double nearPlaneWidth = legacyFrustum.getNearPlaneWidth(); + double nearPlaneDist = legacyFrustum.getNearPlaneDist(); + const Mat4d& camxform = legacyFrustum.getCamXForm(); + + // create the new frustum with these parameters + Mat4d xform(Mat4d::identity()); + xform.setToTranslation(Vec3d(0,0, -nearPlaneDist)); + xform.preScale(Vec3d(nearPlaneWidth, nearPlaneWidth, -nearPlaneWidth)); + + // create the linear part of the frustum (the second map) + Mat4d second = xform * camxform; + + // we might have precision problems, the constructor for the + // affine map is not forgiving (so we fix here). + const Vec4d col3 = second.col(3); + const Vec4d ref(0, 0, 0, 1); + + if (ref.eq(col3) ) { + second.setCol(3, ref); + } + + MapBase::Ptr linearMap(simplify(AffineMap(second).getAffineMap())); + + // note that the depth is scaled on the nearPlaneSize. + // the linearMap will uniformly scale the frustum to the correct size + // and rotate to align with the camera + mMap = MapBase::Ptr(new NonlinearFrustumMap( + bbox, taper, depth/nearPlaneWidth, linearMap)); + + } else { + OPENVDB_THROW(IoError, "Transforms of type " + type + " are no longer supported"); + } + } else { + // Check if the map has been registered. + if (!MapRegistry::isRegistered(type)) { + OPENVDB_THROW(KeyError, "Map " << type << " is not registered"); + } + + // Create the map of the type and then read it in. + mMap = math::MapRegistry::createMap(type); + mMap->read(is); + } +} + + +void +Transform::write(std::ostream& os) const +{ + if (!mMap) OPENVDB_THROW(IoError, "Transform does not have a map"); + + // Write the type-name of the map. + writeString(os, mMap->type()); + + mMap->write(os); +} + + +//////////////////////////////////////// + + +bool +Transform::isIdentity() const +{ + if (mMap->isLinear()) { + return mMap->getAffineMap()->isIdentity(); + } else if ( mMap->isType() ) { + NonlinearFrustumMap::Ptr frustum = + StaticPtrCast(mMap); + return frustum->isIdentity(); + } + // unknown nonlinear map type + return false; +} + + +//////////////////////////////////////// + + +void +Transform::preRotate(double radians, const Axis axis) +{ + mMap = mMap->preRotate(radians, axis); +} + +void +Transform::preTranslate(const Vec3d& t) +{ + mMap = mMap->preTranslate(t); +} + +void +Transform::preScale(const Vec3d& s) +{ + mMap = mMap->preScale(s); +} + +void +Transform::preScale(double s) +{ + const Vec3d vec(s,s,s); + mMap = mMap->preScale(vec); +} + +void +Transform::preShear(double shear, Axis axis0, Axis axis1) +{ + mMap = mMap->preShear(shear, axis0, axis1); +} + +void +Transform::preMult(const Mat4d& m) +{ + if (mMap->isLinear()) { + + const Mat4d currentMat4 = mMap->getAffineMap()->getMat4(); + const Mat4d newMat4 = m * currentMat4; + + AffineMap::Ptr affineMap( new AffineMap( newMat4) ); + mMap = simplify(affineMap); + + } else if (mMap->isType() ) { + + NonlinearFrustumMap::Ptr currentFrustum = + StaticPtrCast(mMap); + + const Mat4d currentMat4 = currentFrustum->secondMap().getMat4(); + const Mat4d newMat4 = m * currentMat4; + + AffineMap affine{newMat4}; + + NonlinearFrustumMap::Ptr frustum{new NonlinearFrustumMap{ + currentFrustum->getBBox(), + currentFrustum->getTaper(), + currentFrustum->getDepth(), + affine.copy() + }}; + mMap = StaticPtrCast(frustum); + } + +} + +void +Transform::preMult(const Mat3d& m) +{ + Mat4d mat4 = Mat4d::identity(); + mat4.setMat3(m); + preMult(mat4); +} + +void +Transform::postRotate(double radians, const Axis axis) +{ + mMap = mMap->postRotate(radians, axis); +} + +void +Transform::postTranslate(const Vec3d& t) +{ + mMap = mMap->postTranslate(t); +} + +void +Transform::postScale(const Vec3d& s) +{ + mMap = mMap->postScale(s); +} + +void +Transform::postScale(double s) +{ + const Vec3d vec(s,s,s); + mMap = mMap->postScale(vec); +} + +void +Transform::postShear(double shear, Axis axis0, Axis axis1) +{ + mMap = mMap->postShear(shear, axis0, axis1); +} + + +void +Transform::postMult(const Mat4d& m) +{ + if (mMap->isLinear()) { + + const Mat4d currentMat4 = mMap->getAffineMap()->getMat4(); + const Mat4d newMat4 = currentMat4 * m; + + AffineMap::Ptr affineMap{new AffineMap{newMat4}}; + mMap = simplify(affineMap); + + } else if (mMap->isType()) { + + NonlinearFrustumMap::Ptr currentFrustum = + StaticPtrCast(mMap); + + const Mat4d currentMat4 = currentFrustum->secondMap().getMat4(); + const Mat4d newMat4 = currentMat4 * m; + + AffineMap affine{newMat4}; + + NonlinearFrustumMap::Ptr frustum{new NonlinearFrustumMap{ + currentFrustum->getBBox(), + currentFrustum->getTaper(), + currentFrustum->getDepth(), + affine.copy() + }}; + mMap = StaticPtrCast(frustum); + } + +} + +void +Transform::postMult(const Mat3d& m) +{ + Mat4d mat4 = Mat4d::identity(); + mat4.setMat3(m); + postMult(mat4); +} + + +//////////////////////////////////////// + + +BBoxd +Transform::indexToWorld(const CoordBBox& indexBBox) const +{ + return this->indexToWorld(BBoxd(indexBBox.min().asVec3d(), indexBBox.max().asVec3d())); +} + + +BBoxd +Transform::indexToWorld(const BBoxd& indexBBox) const +{ + const Vec3d &imin = indexBBox.min(), &imax = indexBBox.max(); + + Vec3d corners[8]; + corners[0] = imin; + corners[1] = Vec3d(imax(0), imin(1), imin(2)); + corners[2] = Vec3d(imax(0), imax(1), imin(2)); + corners[3] = Vec3d(imin(0), imax(1), imin(2)); + corners[4] = Vec3d(imin(0), imin(1), imax(2)); + corners[5] = Vec3d(imax(0), imin(1), imax(2)); + corners[6] = imax; + corners[7] = Vec3d(imin(0), imax(1), imax(2)); + + BBoxd worldBBox; + Vec3d &wmin = worldBBox.min(), &wmax = worldBBox.max(); + + wmin = wmax = this->indexToWorld(corners[0]); + for (int i = 1; i < 8; ++i) { + Vec3d image = this->indexToWorld(corners[i]); + wmin = minComponent(wmin, image); + wmax = maxComponent(wmax, image); + } + return worldBBox; +} + + +BBoxd +Transform::worldToIndex(const BBoxd& worldBBox) const +{ + Vec3d indexMin, indexMax; + calculateBounds(*this, worldBBox.min(), worldBBox.max(), indexMin, indexMax); + return BBoxd(indexMin, indexMax); +} + + +CoordBBox +Transform::worldToIndexCellCentered(const BBoxd& worldBBox) const +{ + Vec3d indexMin, indexMax; + calculateBounds(*this, worldBBox.min(), worldBBox.max(), indexMin, indexMax); + return CoordBBox(Coord::round(indexMin), Coord::round(indexMax)); +} + + +CoordBBox +Transform::worldToIndexNodeCentered(const BBoxd& worldBBox) const +{ + Vec3d indexMin, indexMax; + calculateBounds(*this, worldBBox.min(), worldBBox.max(), indexMin, indexMax); + return CoordBBox(Coord::floor(indexMin), Coord::floor(indexMax)); +} + + +//////////////////////////////////////// + +// Utility methods + +void +calculateBounds(const Transform& t, + const Vec3d& minWS, + const Vec3d& maxWS, + Vec3d& minIS, + Vec3d& maxIS) +{ + /// the pre-image of the 8 corners of the box + Vec3d corners[8]; + corners[0] = minWS; + corners[1] = Vec3d(maxWS(0), minWS(1), minWS(2)); + corners[2] = Vec3d(maxWS(0), maxWS(1), minWS(2)); + corners[3] = Vec3d(minWS(0), maxWS(1), minWS(2)); + corners[4] = Vec3d(minWS(0), minWS(1), maxWS(2)); + corners[5] = Vec3d(maxWS(0), minWS(1), maxWS(2)); + corners[6] = maxWS; + corners[7] = Vec3d(minWS(0), maxWS(1), maxWS(2)); + + Vec3d pre_image; + minIS = t.worldToIndex(corners[0]); + maxIS = minIS; + for (int i = 1; i < 8; ++i) { + pre_image = t.worldToIndex(corners[i]); + for (int j = 0; j < 3; ++j) { + minIS(j) = std::min(minIS(j), pre_image(j)); + maxIS(j) = std::max(maxIS(j), pre_image(j)); + } + } +} + + +//////////////////////////////////////// + + +bool +Transform::operator==(const Transform& other) const +{ + if (!this->voxelSize().eq(other.voxelSize())) return false; + + if (this->mapType() == other.mapType()) { + return this->baseMap()->isEqual(*other.baseMap()); + } + + if (this->isLinear() && other.isLinear()) { + // promote both maps to mat4 form and compare + return ( *(this->baseMap()->getAffineMap()) == + *(other.baseMap()->getAffineMap()) ); + } + + return this->baseMap()->isEqual(*other.baseMap()); +} + + +//////////////////////////////////////// + + +void +Transform::print(std::ostream& os, const std::string& indent) const +{ + struct Local { + // Print a Vec4d more compactly than Vec4d::str() does. + static std::string rowAsString(const Vec4d& row) + { + std::ostringstream ostr; + ostr << "[" << std::setprecision(3) << row[0] << ", " + << row[1] << ", " << row[2] << ", " << row[3] << "] "; + return ostr.str(); + } + }; + + // Write to a string stream so that I/O manipulators don't affect the output stream. + std::ostringstream ostr; + + { + Vec3d dim = this->voxelSize(); + if (dim.eq(Vec3d(dim[0]))) { + ostr << indent << std::left << "voxel size: " << std::setprecision(3) << dim[0]; + } else { + ostr << indent << std::left << "voxel dimensions: [" << std::setprecision(3) + << dim[0] << ", " << dim[1] << ", " << dim[2] << "]"; + } + ostr << "\n"; + } + + if (this->isLinear()) { + openvdb::Mat4R v2w = this->baseMap()->getAffineMap()->getMat4(); + + ostr << indent << std::left << "index to world:\n"; + for (int row = 0; row < 4; ++row) { + ostr << indent << " " << std::left << Local::rowAsString(v2w[row]) << "\n"; + } + + } else if (this->mapType() == NonlinearFrustumMap::mapType()) { + const NonlinearFrustumMap& frustum = + static_cast(*this->baseMap()); + const openvdb::Mat4R linear = this->baseMap()->getAffineMap()->getMat4(); + + std::vector linearRow; + size_t w = 0; + for (int row = 0; row < 4; ++row) { + std::string str = Local::rowAsString(linear[row]); + w = std::max(w, str.size()); + linearRow.push_back(str); + } + w = std::max(w, 30); + const int iw = int(w); + + // Print rows of the linear component matrix side-by-side with frustum parameters. + ostr << indent << std::left << std::setw(iw) << "linear:" + << " frustum:\n"; + ostr << indent << " " << std::left << std::setw(iw) << linearRow[0] + << " taper: " << frustum.getTaper() << "\n"; + ostr << indent << " " << std::left << std::setw(iw) << linearRow[1] + << " depth: " << frustum.getDepth() << "\n"; + + std::ostringstream ostmp; + ostmp << indent << " " << std::left << std::setw(iw) << linearRow[2] + << " bounds: " << frustum.getBBox(); + if (ostmp.str().size() < 79) { + ostr << ostmp.str() << "\n"; + ostr << indent << " " << std::left << std::setw(iw) << linearRow[3] << "\n"; + } else { + // If the frustum bounding box doesn't fit on one line, split it into two lines. + ostr << indent << " " << std::left << std::setw(iw) << linearRow[2] + << " bounds: " << frustum.getBBox().min() << " ->\n"; + ostr << indent << " " << std::left << std::setw(iw) << linearRow[3] + << " " << frustum.getBBox().max() << "\n"; + } + + } else { + /// @todo Handle other map types. + } + + os << ostr.str(); +} + + +//////////////////////////////////////// + + +std::ostream& +operator<<(std::ostream& os, const Transform& t) +{ + os << "Transform type: " << t.baseMap()->type() << std::endl; + os << t.baseMap()->str() << std::endl; + return os; +} + + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/math/Transform.h b/openvdb/math/Transform.h new file mode 100644 index 00000000..b6029768 --- /dev/null +++ b/openvdb/math/Transform.h @@ -0,0 +1,279 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_TRANSFORM_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_TRANSFORM_HAS_BEEN_INCLUDED + +#include "Maps.h" +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +// Forward declaration +class Transform; + + +// Utility methods + +/// @brief Calculate an axis-aligned bounding box in index space from an +/// axis-aligned bounding box in world space. +/// @see Transform::worldToIndex(const BBoxd&) const +OPENVDB_API void +calculateBounds(const Transform& t, const Vec3d& minWS, const Vec3d& maxWS, + Vec3d& minIS, Vec3d& maxIS); + +/// @todo Calculate an axis-aligned bounding box in index space from a +/// bounding sphere in world space. +//void calculateBounds(const Transform& t, const Vec3d& center, const Real radius, +// Vec3d& minIS, Vec3d& maxIS); + + +//////////////////////////////////////// + + +/// @class Transform +class OPENVDB_API Transform +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + Transform(): mMap(MapBase::Ptr(new ScaleMap())) {} + Transform(const MapBase::Ptr&); + Transform(const Transform&); + ~Transform() {} + + Ptr copy() const { return Ptr(new Transform(mMap->copy())); } + + //@{ + /// @brief Create and return a shared pointer to a new transform. + static Transform::Ptr createLinearTransform(double voxelSize = 1.0); + static Transform::Ptr createLinearTransform(const Mat4R&); + static Transform::Ptr createFrustumTransform(const BBoxd&, double taper, + double depth, double voxelSize = 1.0); + //@} + + /// Return @c true if the transformation map is exclusively linear/affine. + bool isLinear() const { return mMap->isLinear(); } + + /// Return @c true if the transform is equivalent to an idenity. + bool isIdentity() const ; + /// Return the transformation map's type-name + Name mapType() const { return mMap->type(); } + + + //@{ + /// @brief Update the linear (affine) map by prepending or + /// postfixing the appropriate operation. In the case of + /// a frustum, the pre-operations apply to the linear part + /// of the transform and not the entire transform, while the + /// post-operations are allways applied last. + void preRotate(double radians, const Axis axis = X_AXIS); + void preTranslate(const Vec3d&); + void preScale(const Vec3d&); + void preScale(double); + void preShear(double shear, Axis axis0, Axis axis1); + void preMult(const Mat4d&); + void preMult(const Mat3d&); + + void postRotate(double radians, const Axis axis = X_AXIS); + void postTranslate(const Vec3d&); + void postScale(const Vec3d&); + void postScale(double); + void postShear(double shear, Axis axis0, Axis axis1); + void postMult(const Mat4d&); + void postMult(const Mat3d&); + //@} + + /// Return the size of a voxel using the linear component of the map. + Vec3d voxelSize() const { return mMap->voxelSize(); } + /// @brief Return the size of a voxel at position (x, y, z). + /// @note Maps that have a nonlinear component (e.g., perspective and frustum maps) + /// have position-dependent voxel sizes. + Vec3d voxelSize(const Vec3d& xyz) const { return mMap->voxelSize(xyz); } + + /// Return the voxel volume of the linear component of the map. + double voxelVolume() const { return mMap->determinant(); } + /// Return the voxel volume at position (x, y, z). + double voxelVolume(const Vec3d& xyz) const { return mMap->determinant(xyz); } + /// Return true if the voxels in world space are uniformly sized cubes + bool hasUniformScale() const { return mMap->hasUniformScale(); } + + //@{ + /// @brief Apply this transformation to the given coordinates. + Vec3d indexToWorld(const Vec3d& xyz) const { return mMap->applyMap(xyz); } + Vec3d indexToWorld(const Coord& ijk) const { return mMap->applyMap(ijk.asVec3d()); } + Vec3d worldToIndex(const Vec3d& xyz) const { return mMap->applyInverseMap(xyz); } + Coord worldToIndexCellCentered(const Vec3d& xyz) const {return Coord::round(worldToIndex(xyz));} + Coord worldToIndexNodeCentered(const Vec3d& xyz) const {return Coord::floor(worldToIndex(xyz));} + //@} + + //@{ + /// @brief Apply this transformation to the given index-space bounding box. + /// @return an axis-aligned world-space bounding box + BBoxd indexToWorld(const CoordBBox&) const; + BBoxd indexToWorld(const BBoxd&) const; + //@} + //@{ + /// @brief Apply the inverse of this transformation to the given world-space bounding box. + /// @return an axis-aligned index-space bounding box + BBoxd worldToIndex(const BBoxd&) const; + CoordBBox worldToIndexCellCentered(const BBoxd&) const; + CoordBBox worldToIndexNodeCentered(const BBoxd&) const; + //@} + + //@{ + /// Return a base pointer to the transformation map. + MapBase::ConstPtr baseMap() const { return mMap; } + MapBase::Ptr baseMap() { return mMap; } + //@} + + //@{ + /// @brief Return the result of downcasting the base map pointer to a + /// @c MapType pointer, or return a null pointer if the types are incompatible. + template typename MapType::Ptr map(); + template typename MapType::ConstPtr map() const; + template typename MapType::ConstPtr constMap() const; + //@} + + /// Unserialize this transform from the given stream. + void read(std::istream&); + /// Serialize this transform to the given stream. + void write(std::ostream&) const; + + /// @brief Print a description of this transform. + /// @param os a stream to which to write textual information + /// @param indent a string with which to prefix each line of text + void print(std::ostream& os = std::cout, const std::string& indent = "") const; + + bool operator==(const Transform& other) const; + inline bool operator!=(const Transform& other) const { return !(*this == other); } + +private: + MapBase::Ptr mMap; +}; // class Transform + + +OPENVDB_API std::ostream& operator<<(std::ostream&, const Transform&); + + +//////////////////////////////////////// + + +template +inline typename MapType::Ptr +Transform::map() +{ + if (mMap->type() == MapType::mapType()) { + return StaticPtrCast(mMap); + } + return typename MapType::Ptr(); +} + + +template +inline typename MapType::ConstPtr +Transform::map() const +{ + return ConstPtrCast( + const_cast(this)->map()); +} + + +template +inline typename MapType::ConstPtr +Transform::constMap() const +{ + return map(); +} + + +//////////////////////////////////////// + + +/// Helper function used internally by processTypedMap() +template +inline void +doProcessTypedMap(Transform& transform, OpType& op) +{ + ResolvedMapType& resolvedMap = *transform.map(); +#ifdef _MSC_VER + op.operator()(resolvedMap); +#else + op.template operator()(resolvedMap); +#endif +} + +/// Helper function used internally by processTypedMap() +template +inline void +doProcessTypedMap(const Transform& transform, OpType& op) +{ + const ResolvedMapType& resolvedMap = *transform.map(); +#ifdef _MSC_VER + op.operator()(resolvedMap); +#else + op.template operator()(resolvedMap); +#endif +} + + +/// @brief Utility function that, given a generic map pointer, +/// calls a functor on the fully-resoved map +/// +/// Usage: +/// @code +/// struct Foo { +/// template +/// void operator()(const MapT& map) const { blah } +/// }; +/// +/// processTypedMap(myMap, Foo()); +/// @endcode +/// +/// @return @c false if the grid type is unknown or unhandled. +template +bool +processTypedMap(TransformType& transform, OpType& op) +{ + using namespace openvdb; + + const Name mapType = transform.mapType(); + if (mapType == UniformScaleMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == UniformScaleTranslateMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == ScaleMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == ScaleTranslateMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == UnitaryMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == AffineMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == TranslationMap::mapType()) { + doProcessTypedMap(transform, op); + + } else if (mapType == NonlinearFrustumMap::mapType()) { + doProcessTypedMap(transform, op); + } else { + return false; + } + return true; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_TRANSFORM_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Tuple.h b/openvdb/math/Tuple.h new file mode 100644 index 00000000..c8bcde49 --- /dev/null +++ b/openvdb/math/Tuple.h @@ -0,0 +1,245 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Tuple.h +/// @author Ben Kwa + +#ifndef OPENVDB_MATH_TUPLE_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_TUPLE_HAS_BEEN_INCLUDED + +#include "Math.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +/// @brief Dummy class for tag dispatch of conversion constructors +struct Conversion {}; + + +/// @class Tuple "Tuple.h" +/// A base class for homogenous tuple types +template +class Tuple { +public: + using value_type = T; + using ValueType = T; + + static const int size = SIZE; + + /// @brief Default ctor. Does nothing. + /// @details This is required because declaring a copy (or other) constructor + /// prevents the compiler from synthesizing a default constructor. + Tuple() {} + + /// Copy constructor. Used when the class signature matches exactly. + Tuple(Tuple const& src) { + for (int i = 0; i < SIZE; ++i) { + mm[i] = src.mm[i]; + } + } + + /// @brief Assignment operator + /// @details This is required because declaring a copy (or other) constructor + /// prevents the compiler from synthesizing a default assignment operator. + Tuple& operator=(Tuple const& src) { + if (&src != this) { + for (int i = 0; i < SIZE; ++i) { + mm[i] = src.mm[i]; + } + } + return *this; + } + + /// @brief Conversion constructor. + /// @details Tuples with different value types and different sizes can be + /// interconverted using this member. Converting from a larger tuple + /// results in truncation; converting from a smaller tuple results in + /// the extra data members being zeroed out. This function assumes that + /// the integer 0 is convertible to the tuple's value type. + template + explicit Tuple(Tuple const &src) { + enum { COPY_END = (SIZE < src_size ? SIZE : src_size) }; + + for (int i = 0; i < COPY_END; ++i) { + mm[i] = src[i]; + } + for (int i = COPY_END; i < SIZE; ++i) { + mm[i] = 0; + } + } + + T operator[](int i) const { + // we'd prefer to use size_t, but can't because gcc3.2 doesn't like + // it - it conflicts with child class conversion operators to + // pointer types. +// assert(i >= 0 && i < SIZE); + return mm[i]; + } + + T& operator[](int i) { + // see above for size_t vs int +// assert(i >= 0 && i < SIZE); + return mm[i]; + } + + /// @name Compatibility + /// These are mostly for backwards compability with functions that take + /// old-style Vs (which are just arrays). + //@{ + /// Copies this tuple into an array of a compatible type + template + void toV(S *v) const { + for (int i = 0; i < SIZE; ++i) { + v[i] = mm[i]; + } + } + + /// Exposes the internal array. Be careful when using this function. + value_type *asV() { + return mm; + } + /// Exposes the internal array. Be careful when using this function. + value_type const *asV() const { + return mm; + } + //@} Compatibility + + /// @return string representation of Classname + std::string str() const { + std::ostringstream buffer; + + buffer << "["; + + // For each column + for (unsigned j(0); j < SIZE; j++) { + if (j) buffer << ", "; + buffer << PrintCast(mm[j]); + } + + buffer << "]"; + + return buffer.str(); + } + + void write(std::ostream& os) const { + os.write(reinterpret_cast(&mm), sizeof(T)*SIZE); + } + void read(std::istream& is) { + is.read(reinterpret_cast(&mm), sizeof(T)*SIZE); + } + + /// True if a Nan is present in this tuple + bool isNan() const { + for (int i = 0; i < SIZE; ++i) { + if (math::isNan(mm[i])) return true; + } + return false; + } + + /// True if an Inf is present in this tuple + bool isInfinite() const { + for (int i = 0; i < SIZE; ++i) { + if (math::isInfinite(mm[i])) return true; + } + return false; + } + + /// True if no Nan or Inf values are present + bool isFinite() const { + for (int i = 0; i < SIZE; ++i) { + if (!math::isFinite(mm[i])) return false; + } + return true; + } + + /// True if all elements are exactly zero + bool isZero() const { + for (int i = 0; i < SIZE; ++i) { + if (!math::isZero(mm[i])) return false; + } + return true; + } + +protected: + T mm[SIZE]; +}; + + +//////////////////////////////////////// + + +/// @return true if t0 < t1, comparing components in order of significance. +template +bool +operator<(const Tuple& t0, const Tuple& t1) +{ + for (int i = 0; i < SIZE-1; ++i) { + if (!isExactlyEqual(t0[i], t1[i])) return t0[i] < t1[i]; + } + return t0[SIZE-1] < t1[SIZE-1]; +} + + +/// @return true if t0 > t1, comparing components in order of significance. +template +bool +operator>(const Tuple& t0, const Tuple& t1) +{ + for (int i = 0; i < SIZE-1; ++i) { + if (!isExactlyEqual(t0[i], t1[i])) return t0[i] > t1[i]; + } + return t0[SIZE-1] > t1[SIZE-1]; +} + + +//////////////////////////////////////// + + +/// @return the absolute value of the given Tuple. +template +Tuple +Abs(const Tuple& t) +{ + Tuple result; + for (int i = 0; i < SIZE; ++i) result[i] = math::Abs(t[i]); + return result; +} + +/// Return @c true if a Nan is present in the tuple. +template +inline bool isNan(const Tuple& t) { return t.isNan(); } + +/// Return @c true if an Inf is present in the tuple. +template +inline bool isInfinite(const Tuple& t) { return t.isInfinite(); } + +/// Return @c true if no Nan or Inf values are present. +template +inline bool isFinite(const Tuple& t) { return t.isFinite(); } + +/// Return @c true if all elements are exactly equal to zero. +template +inline bool isZero(const Tuple& t) { return t.isZero(); } + +//////////////////////////////////////// + + +/// Write a Tuple to an output stream +template +std::ostream& operator<<(std::ostream& ostr, const Tuple& classname) +{ + ostr << classname.str(); + return ostr; +} + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_TUPLE_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Vec2.h b/openvdb/math/Vec2.h new file mode 100644 index 00000000..124c7660 --- /dev/null +++ b/openvdb/math/Vec2.h @@ -0,0 +1,538 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_VEC2_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_VEC2_HAS_BEEN_INCLUDED + +#include +#include "Math.h" +#include "Tuple.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Mat2; + +template +class Vec2: public Tuple<2, T> +{ +public: + using value_type = T; + using ValueType = T; + + /// Trivial constructor, the vector is NOT initialized + Vec2() {} + + /// @brief Construct a vector all of whose components have the given value. + explicit Vec2(T val) { this->mm[0] = this->mm[1] = val; } + + /// Constructor with two arguments, e.g. Vec2f v(1,2,3); + Vec2(T x, T y) + { + this->mm[0] = x; + this->mm[1] = y; + } + + /// Constructor with array argument, e.g. float a[2]; Vec2f v(a); + template + Vec2(Source *a) + { + this->mm[0] = static_cast(a[0]); + this->mm[1] = static_cast(a[1]); + } // trivial + + /// Conversion constructor + template + explicit Vec2(const Tuple<2, Source> &t) + { + this->mm[0] = static_cast(t[0]); + this->mm[1] = static_cast(t[1]); + } + + /// @brief Construct a vector all of whose components have the given value, + /// which may be of an arithmetic type different from this vector's value type. + /// @details Type conversion warnings are suppressed. + template + explicit Vec2(Other val, + typename std::enable_if::value, Conversion>::type = Conversion{}) + { + this->mm[0] = this->mm[1] = static_cast(val); + } + + /// Reference to the component, e.g. v.x() = 4.5f; + T& x() {return this->mm[0];} + T& y() {return this->mm[1];} + + /// Get the component, e.g. float f = v.y(); + T x() const {return this->mm[0];} + T y() const {return this->mm[1];} + + /// Alternative indexed reference to the elements + T& operator()(int i) {return this->mm[i];} + + /// Alternative indexed constant reference to the elements, + T operator()(int i) const {return this->mm[i];} + + T* asPointer() {return this->mm;} + const T* asPointer() const {return this->mm;} + + /// "this" vector gets initialized to [x, y, z], + /// calling v.init(); has same effect as calling v = Vec2::zero(); + const Vec2& init(T x=0, T y=0) + { + this->mm[0] = x; this->mm[1] = y; + return *this; + } + + /// Set "this" vector to zero + const Vec2& setZero() + { + this->mm[0] = 0; this->mm[1] = 0; + return *this; + } + + /// Assignment operator + template + const Vec2& operator=(const Vec2 &v) + { + // note: don't static_cast because that suppresses warnings + this->mm[0] = v[0]; + this->mm[1] = v[1]; + + return *this; + } + + /// Equality operator, does exact floating point comparisons + bool operator==(const Vec2 &v) const + { + return (isExactlyEqual(this->mm[0], v.mm[0]) && isExactlyEqual(this->mm[1], v.mm[1])); + } + + /// Inequality operator, does exact floating point comparisons + bool operator!=(const Vec2 &v) const { return !(*this==v); } + + /// Test if "this" vector is equivalent to vector v with tolerance of eps + bool eq(const Vec2 &v, T eps = static_cast(1.0e-7)) const + { + return isApproxEqual(this->mm[0], v.mm[0], eps) && + isApproxEqual(this->mm[1], v.mm[1], eps); + } // trivial + + /// Negation operator, for e.g. v1 = -v2; + Vec2 operator-() const {return Vec2(-this->mm[0], -this->mm[1]);} + + /// this = v1 + v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.add(v1,v); + template + const Vec2& add(const Vec2 &v1, const Vec2 &v2) + { + this->mm[0] = v1[0] + v2[0]; + this->mm[1] = v1[1] + v2[1]; + + return *this; + } + + /// this = v1 - v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.sub(v1,v); + template + const Vec2& sub(const Vec2 &v1, const Vec2 &v2) + { + this->mm[0] = v1[0] - v2[0]; + this->mm[1] = v1[1] - v2[1]; + + return *this; + } + + /// this = scalar*v, v need not be a distinct object from "this", + /// e.g. v.scale(1.5,v1); + template + const Vec2& scale(T0 scalar, const Vec2 &v) + { + this->mm[0] = scalar * v[0]; + this->mm[1] = scalar * v[1]; + + return *this; + } + + template + const Vec2 &div(T0 scalar, const Vec2 &v) + { + this->mm[0] = v[0] / scalar; + this->mm[1] = v[1] / scalar; + + return *this; + } + + /// Dot product + T dot(const Vec2 &v) const { return this->mm[0]*v[0] + this->mm[1]*v[1]; } // trivial + + /// Length of the vector + T length() const + { + return static_cast(sqrt(double(this->mm[0]*this->mm[0] + this->mm[1]*this->mm[1]))); + } + + /// Squared length of the vector, much faster than length() as it + /// does not involve square root + T lengthSqr() const { return (this->mm[0]*this->mm[0] + this->mm[1]*this->mm[1]); } + + /// Return a reference to itsef after the exponent has been + /// applied to all the vector components. + inline const Vec2& exp() + { + this->mm[0] = std::exp(this->mm[0]); + this->mm[1] = std::exp(this->mm[1]); + return *this; + } + + /// Return a reference to itself after log has been + /// applied to all the vector components. + inline const Vec2& log() + { + this->mm[0] = std::log(this->mm[0]); + this->mm[1] = std::log(this->mm[1]); + return *this; + } + + /// Return the sum of all the vector components. + inline T sum() const + { + return this->mm[0] + this->mm[1]; + } + + /// Return the product of all the vector components. + inline T product() const + { + return this->mm[0] * this->mm[1]; + } + + /// this = normalized this + bool normalize(T eps = static_cast(1.0e-8)) + { + T d = length(); + if (isApproxEqual(d, T(0), eps)) { + return false; + } + *this *= (T(1) / d); + return true; + } + + /// return normalized this, throws if null vector + Vec2 unit(T eps=0) const + { + T d; + return unit(eps, d); + } + + /// return normalized this and length, throws if null vector + Vec2 unit(T eps, T& len) const + { + len = length(); + if (isApproxEqual(len, T(0), eps)) { + OPENVDB_THROW(ArithmeticError, "Normalizing null 2-vector"); + } + return *this / len; + } + + /// return normalized this, or (1, 0) if this is null vector + Vec2 unitSafe() const + { + T l2 = lengthSqr(); + return l2 ? *this/static_cast(sqrt(l2)) : Vec2(1,0); + } + + /// Multiply each element of this vector by @a scalar. + template + const Vec2 &operator*=(S scalar) + { + this->mm[0] *= scalar; + this->mm[1] *= scalar; + return *this; + } + + /// Multiply each element of this vector by the corresponding element of the given vector. + template + const Vec2 &operator*=(const Vec2 &v1) + { + this->mm[0] *= v1[0]; + this->mm[1] *= v1[1]; + return *this; + } + + /// Divide each element of this vector by @a scalar. + template + const Vec2 &operator/=(S scalar) + { + this->mm[0] /= scalar; + this->mm[1] /= scalar; + return *this; + } + + /// Divide each element of this vector by the corresponding element of the given vector. + template + const Vec2 &operator/=(const Vec2 &v1) + { + this->mm[0] /= v1[0]; + this->mm[1] /= v1[1]; + return *this; + } + + /// Add @a scalar to each element of this vector. + template + const Vec2 &operator+=(S scalar) + { + this->mm[0] += scalar; + this->mm[1] += scalar; + return *this; + } + + /// Add each element of the given vector to the corresponding element of this vector. + template + const Vec2 &operator+=(const Vec2 &v1) + { + this->mm[0] += v1[0]; + this->mm[1] += v1[1]; + return *this; + } + + /// Subtract @a scalar from each element of this vector. + template + const Vec2 &operator-=(S scalar) + { + this->mm[0] -= scalar; + this->mm[1] -= scalar; + return *this; + } + + /// Subtract each element of the given vector from the corresponding element of this vector. + template + const Vec2 &operator-=(const Vec2 &v1) + { + this->mm[0] -= v1[0]; + this->mm[1] -= v1[1]; + return *this; + } + + // Number of cols, rows, elements + static unsigned numRows() { return 1; } + static unsigned numColumns() { return 2; } + static unsigned numElements() { return 2; } + + /// Returns the scalar component of v in the direction of onto, onto need + /// not be unit. e.g float c = Vec2f::component(v1,v2); + T component(const Vec2 &onto, T eps = static_cast(1.0e-8)) const + { + T l = onto.length(); + if (isApproxEqual(l, T(0), eps)) return 0; + + return dot(onto)*(T(1)/l); + } + + /// Return the projection of v onto the vector, onto need not be unit + /// e.g. Vec2f v = Vec2f::projection(v,n); + Vec2 projection(const Vec2 &onto, T eps = static_cast(1.0e-8)) const + { + T l = onto.lengthSqr(); + if (isApproxEqual(l, T(0), eps)) return Vec2::zero(); + + return onto*(dot(onto)*(T(1)/l)); + } + + /// Return an arbitrary unit vector perpendicular to v + /// Vector v must be a unit vector + /// e.g. v.normalize(); Vec2f n = Vec2f::getArbPerpendicular(v); + Vec2 getArbPerpendicular() const { return Vec2(-this->mm[1], this->mm[0]); } + + /// Predefined constants, e.g. Vec2f v = Vec2f::xNegAxis(); + static Vec2 zero() { return Vec2(0, 0); } + static Vec2 ones() { return Vec2(1, 1); } +}; + + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec2::type> operator*(S scalar, const Vec2 &v) +{ + return v * scalar; +} + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec2::type> operator*(const Vec2 &v, S scalar) +{ + Vec2::type> result(v); + result *= scalar; + return result; +} + +/// Multiply corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec2::type> operator*(const Vec2 &v0, const Vec2 &v1) +{ + Vec2::type> result(v0[0] * v1[0], v0[1] * v1[1]); + return result; +} + +/// Divide @a scalar by each element of the given vector and return the result. +template +inline Vec2::type> operator/(S scalar, const Vec2 &v) +{ + return Vec2::type>(scalar/v[0], scalar/v[1]); +} + +/// Divide each element of the given vector by @a scalar and return the result. +template +inline Vec2::type> operator/(const Vec2 &v, S scalar) +{ + Vec2::type> result(v); + result /= scalar; + return result; +} + +/// Divide corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec2::type> operator/(const Vec2 &v0, const Vec2 &v1) +{ + Vec2::type> result(v0[0] / v1[0], v0[1] / v1[1]); + return result; +} + +/// Add corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec2::type> operator+(const Vec2 &v0, const Vec2 &v1) +{ + Vec2::type> result(v0); + result += v1; + return result; +} + +/// Add @a scalar to each element of the given vector and return the result. +template +inline Vec2::type> operator+(const Vec2 &v, S scalar) +{ + Vec2::type> result(v); + result += scalar; + return result; +} + +/// Subtract corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec2::type> operator-(const Vec2 &v0, const Vec2 &v1) +{ + Vec2::type> result(v0); + result -= v1; + return result; +} + +/// Subtract @a scalar from each element of the given vector and return the result. +template +inline Vec2::type> operator-(const Vec2 &v, S scalar) +{ + Vec2::type> result(v); + result -= scalar; + return result; +} + +/// Angle between two vectors, the result is between [0, pi], +/// e.g. float a = Vec2f::angle(v1,v2); +template +inline T angle(const Vec2 &v1, const Vec2 &v2) +{ + T c = v1.dot(v2); + return acos(c); +} + +template +inline bool +isApproxEqual(const Vec2& a, const Vec2& b) +{ + return a.eq(b); +} +template +inline bool +isApproxEqual(const Vec2& a, const Vec2& b, const Vec2& eps) +{ + return isApproxEqual(a.x(), b.x(), eps.x()) && + isApproxEqual(a.y(), b.y(), eps.y()); +} + +template +inline Vec2 +Abs(const Vec2& v) +{ + return Vec2(Abs(v[0]), Abs(v[1])); +} + +/// Orthonormalize vectors v1 and v2 and store back the resulting basis +/// e.g. Vec2f::orthonormalize(v1,v2); +template +inline void orthonormalize(Vec2 &v1, Vec2 &v2) +{ + // If the input vectors are v0, v1, and v2, then the Gram-Schmidt + // orthonormalization produces vectors u0, u1, and u2 as follows, + // + // u0 = v0/|v0| + // u1 = (v1-(u0*v1)u0)/|v1-(u0*v1)u0| + // + // where |A| indicates length of vector A and A*B indicates dot + // product of vectors A and B. + + // compute u0 + v1.normalize(); + + // compute u1 + T d0 = v1.dot(v2); + v2 -= v1*d0; + v2.normalize(); +} + + +/// \remark We are switching to a more explicit name because the semantics +/// are different from std::min/max. In that case, the function returns a +/// reference to one of the objects based on a comparator. Here, we must +/// fabricate a new object which might not match either of the inputs. + +/// Return component-wise minimum of the two vectors. +template +inline Vec2 minComponent(const Vec2 &v1, const Vec2 &v2) +{ + return Vec2( + std::min(v1.x(), v2.x()), + std::min(v1.y(), v2.y())); +} + +/// Return component-wise maximum of the two vectors. +template +inline Vec2 maxComponent(const Vec2 &v1, const Vec2 &v2) +{ + return Vec2( + std::max(v1.x(), v2.x()), + std::max(v1.y(), v2.y())); +} + +/// @brief Return a vector with the exponent applied to each of +/// the components of the input vector. +template +inline Vec2 Exp(Vec2 v) { return v.exp(); } + +/// @brief Return a vector with log applied to each of +/// the components of the input vector. +template +inline Vec2 Log(Vec2 v) { return v.log(); } + +using Vec2i = Vec2; +using Vec2ui = Vec2; +using Vec2s = Vec2; +using Vec2d = Vec2; + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_VEC2_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Vec3.h b/openvdb/math/Vec3.h new file mode 100644 index 00000000..97aceaac --- /dev/null +++ b/openvdb/math/Vec3.h @@ -0,0 +1,668 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_VEC3_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_VEC3_HAS_BEEN_INCLUDED + +#include +#include "Math.h" +#include "Tuple.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Mat3; + +template +class Vec3: public Tuple<3, T> +{ +public: + using value_type = T; + using ValueType = T; + + /// Trivial constructor, the vector is NOT initialized + Vec3() {} + + /// @brief Construct a vector all of whose components have the given value. + explicit Vec3(T val) { this->mm[0] = this->mm[1] = this->mm[2] = val; } + + /// Constructor with three arguments, e.g. Vec3d v(1,2,3); + Vec3(T x, T y, T z) + { + this->mm[0] = x; + this->mm[1] = y; + this->mm[2] = z; + } + + /// Constructor with array argument, e.g. double a[3]; Vec3d v(a); + template + Vec3(Source *a) + { + this->mm[0] = static_cast(a[0]); + this->mm[1] = static_cast(a[1]); + this->mm[2] = static_cast(a[2]); + } + + /// @brief Construct a Vec3 from a 3-Tuple with a possibly different value type. + /// @details Type conversion warnings are suppressed. + template + explicit Vec3(const Tuple<3, Source> &v) + { + this->mm[0] = static_cast(v[0]); + this->mm[1] = static_cast(v[1]); + this->mm[2] = static_cast(v[2]); + } + + /// @brief Construct a vector all of whose components have the given value, + /// which may be of an arithmetic type different from this vector's value type. + /// @details Type conversion warnings are suppressed. + template + explicit Vec3(Other val, + typename std::enable_if::value, Conversion>::type = Conversion{}) + { + this->mm[0] = this->mm[1] = this->mm[2] = static_cast(val); + } + + /// @brief Construct a Vec3 from another Vec3 with a possibly different value type. + /// @details Type conversion warnings are suppressed. + template + Vec3(const Vec3& v) + { + this->mm[0] = static_cast(v[0]); + this->mm[1] = static_cast(v[1]); + this->mm[2] = static_cast(v[2]); + } + + /// Reference to the component, e.g. v.x() = 4.5f; + T& x() { return this->mm[0]; } + T& y() { return this->mm[1]; } + T& z() { return this->mm[2]; } + + /// Get the component, e.g. float f = v.y(); + T x() const { return this->mm[0]; } + T y() const { return this->mm[1]; } + T z() const { return this->mm[2]; } + + T* asPointer() { return this->mm; } + const T* asPointer() const { return this->mm; } + + /// Alternative indexed reference to the elements + T& operator()(int i) { return this->mm[i]; } + + /// Alternative indexed constant reference to the elements, + T operator()(int i) const { return this->mm[i]; } + + /// "this" vector gets initialized to [x, y, z], + /// calling v.init(); has same effect as calling v = Vec3::zero(); + const Vec3& init(T x=0, T y=0, T z=0) + { + this->mm[0] = x; this->mm[1] = y; this->mm[2] = z; + return *this; + } + + + /// Set "this" vector to zero + const Vec3& setZero() + { + this->mm[0] = 0; this->mm[1] = 0; this->mm[2] = 0; + return *this; + } + + /// @brief Assignment operator + /// @details Type conversion warnings are not suppressed. + template + const Vec3& operator=(const Vec3 &v) + { + // note: don't static_cast because that suppresses warnings + this->mm[0] = v[0]; + this->mm[1] = v[1]; + this->mm[2] = v[2]; + + return *this; + } + + /// Test if "this" vector is equivalent to vector v with tolerance of eps + bool eq(const Vec3 &v, T eps = static_cast(1.0e-7)) const + { + return isRelOrApproxEqual(this->mm[0], v.mm[0], eps, eps) && + isRelOrApproxEqual(this->mm[1], v.mm[1], eps, eps) && + isRelOrApproxEqual(this->mm[2], v.mm[2], eps, eps); + } + + + /// Negation operator, for e.g. v1 = -v2; + Vec3 operator-() const { return Vec3(-this->mm[0], -this->mm[1], -this->mm[2]); } + + /// this = v1 + v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.add(v1,v); + template + const Vec3& add(const Vec3 &v1, const Vec3 &v2) + { + this->mm[0] = v1[0] + v2[0]; + this->mm[1] = v1[1] + v2[1]; + this->mm[2] = v1[2] + v2[2]; + + return *this; + } + + /// this = v1 - v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.sub(v1,v); + template + const Vec3& sub(const Vec3 &v1, const Vec3 &v2) + { + this->mm[0] = v1[0] - v2[0]; + this->mm[1] = v1[1] - v2[1]; + this->mm[2] = v1[2] - v2[2]; + + return *this; + } + + /// this = scalar*v, v need not be a distinct object from "this", + /// e.g. v.scale(1.5,v1); + template + const Vec3& scale(T0 scale, const Vec3 &v) + { + this->mm[0] = scale * v[0]; + this->mm[1] = scale * v[1]; + this->mm[2] = scale * v[2]; + + return *this; + } + + template + const Vec3 &div(T0 scale, const Vec3 &v) + { + this->mm[0] = v[0] / scale; + this->mm[1] = v[1] / scale; + this->mm[2] = v[2] / scale; + + return *this; + } + + /// Dot product + T dot(const Vec3 &v) const + { + return + this->mm[0]*v.mm[0] + + this->mm[1]*v.mm[1] + + this->mm[2]*v.mm[2]; + } + + /// Length of the vector + T length() const + { + return static_cast(sqrt(double( + this->mm[0]*this->mm[0] + + this->mm[1]*this->mm[1] + + this->mm[2]*this->mm[2]))); + } + + + /// Squared length of the vector, much faster than length() as it + /// does not involve square root + T lengthSqr() const + { + return + this->mm[0]*this->mm[0] + + this->mm[1]*this->mm[1] + + this->mm[2]*this->mm[2]; + } + + /// Return the cross product of "this" vector and v; + Vec3 cross(const Vec3 &v) const + { + return Vec3(this->mm[1]*v.mm[2] - this->mm[2]*v.mm[1], + this->mm[2]*v.mm[0] - this->mm[0]*v.mm[2], + this->mm[0]*v.mm[1] - this->mm[1]*v.mm[0]); + } + + + /// this = v1 cross v2, v1 and v2 must be distinct objects than "this" + const Vec3& cross(const Vec3 &v1, const Vec3 &v2) + { + // assert(this!=&v1); + // assert(this!=&v2); + this->mm[0] = v1.mm[1]*v2.mm[2] - v1.mm[2]*v2.mm[1]; + this->mm[1] = v1.mm[2]*v2.mm[0] - v1.mm[0]*v2.mm[2]; + this->mm[2] = v1.mm[0]*v2.mm[1] - v1.mm[1]*v2.mm[0]; + return *this; + } + + /// Multiply each element of this vector by @a scalar. + template + const Vec3 &operator*=(S scalar) + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value0 = this->mm[0] * scalar; + const auto value1 = this->mm[1] * scalar; + const auto value2 = this->mm[2] * scalar; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + this->mm[0] = static_cast(value0); + this->mm[1] = static_cast(value1); + this->mm[2] = static_cast(value2); + return *this; + } + + /// Multiply each element of this vector by the corresponding element of the given vector. + template + const Vec3 &operator*=(const Vec3 &v1) + { + this->mm[0] *= v1[0]; + this->mm[1] *= v1[1]; + this->mm[2] *= v1[2]; + return *this; + } + + /// Divide each element of this vector by @a scalar. + template + const Vec3 &operator/=(S scalar) + { + this->mm[0] /= scalar; + this->mm[1] /= scalar; + this->mm[2] /= scalar; + return *this; + } + + /// Divide each element of this vector by the corresponding element of the given vector. + template + const Vec3 &operator/=(const Vec3 &v1) + { + this->mm[0] /= v1[0]; + this->mm[1] /= v1[1]; + this->mm[2] /= v1[2]; + return *this; + } + + /// Add @a scalar to each element of this vector. + template + const Vec3 &operator+=(S scalar) + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value0 = this->mm[0] + scalar; + const auto value1 = this->mm[1] + scalar; + const auto value2 = this->mm[2] + scalar; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + this->mm[0] = static_cast(value0); + this->mm[1] = static_cast(value1); + this->mm[2] = static_cast(value2); + return *this; + } + + /// Add each element of the given vector to the corresponding element of this vector. + template + const Vec3 &operator+=(const Vec3 &v1) + { + this->mm[0] += v1[0]; + this->mm[1] += v1[1]; + this->mm[2] += v1[2]; + return *this; + } + + /// Subtract @a scalar from each element of this vector. + template + const Vec3 &operator-=(S scalar) + { + this->mm[0] -= scalar; + this->mm[1] -= scalar; + this->mm[2] -= scalar; + return *this; + } + + /// Subtract each element of the given vector from the corresponding element of this vector. + template + const Vec3 &operator-=(const Vec3 &v1) + { + this->mm[0] -= v1[0]; + this->mm[1] -= v1[1]; + this->mm[2] -= v1[2]; + return *this; + } + + /// Return a reference to itself after the exponent has been + /// applied to all the vector components. + inline const Vec3& exp() + { + this->mm[0] = std::exp(this->mm[0]); + this->mm[1] = std::exp(this->mm[1]); + this->mm[2] = std::exp(this->mm[2]); + return *this; + } + + /// Return a reference to itself after log has been + /// applied to all the vector components. + inline const Vec3& log() + { + this->mm[0] = std::log(this->mm[0]); + this->mm[1] = std::log(this->mm[1]); + this->mm[2] = std::log(this->mm[2]); + return *this; + } + + /// Return the sum of all the vector components. + inline T sum() const + { + return this->mm[0] + this->mm[1] + this->mm[2]; + } + + /// Return the product of all the vector components. + inline T product() const + { + return this->mm[0] * this->mm[1] * this->mm[2]; + } + + /// this = normalized this + bool normalize(T eps = T(1.0e-7)) + { + T d = length(); + if (isApproxEqual(d, T(0), eps)) { + return false; + } + *this *= (T(1) / d); + return true; + } + + + /// return normalized this, throws if null vector + Vec3 unit(T eps=0) const + { + T d; + return unit(eps, d); + } + + /// return normalized this and length, throws if null vector + Vec3 unit(T eps, T& len) const + { + len = length(); + if (isApproxEqual(len, T(0), eps)) { + OPENVDB_THROW(ArithmeticError, "Normalizing null 3-vector"); + } + return *this / len; + } + + /// return normalized this, or (1, 0, 0) if this is null vector + Vec3 unitSafe() const + { + T l2 = lengthSqr(); + return l2 ? *this / static_cast(sqrt(l2)) : Vec3(1, 0 ,0); + } + + // Number of cols, rows, elements + static unsigned numRows() { return 1; } + static unsigned numColumns() { return 3; } + static unsigned numElements() { return 3; } + + /// Returns the scalar component of v in the direction of onto, onto need + /// not be unit. e.g double c = Vec3d::component(v1,v2); + T component(const Vec3 &onto, T eps = static_cast(1.0e-7)) const + { + T l = onto.length(); + if (isApproxEqual(l, T(0), eps)) return 0; + + return dot(onto)*(T(1)/l); + } + + /// Return the projection of v onto the vector, onto need not be unit + /// e.g. Vec3d a = vprojection(n); + Vec3 projection(const Vec3 &onto, T eps = static_cast(1.0e-7)) const + { + T l = onto.lengthSqr(); + if (isApproxEqual(l, T(0), eps)) return Vec3::zero(); + + return onto*(dot(onto)*(T(1)/l)); + } + + /// Return an arbitrary unit vector perpendicular to v + /// Vector this must be a unit vector + /// e.g. v = v.normalize(); Vec3d n = v.getArbPerpendicular(); + Vec3 getArbPerpendicular() const + { + Vec3 u; + T l; + + if ( fabs(this->mm[0]) >= fabs(this->mm[1]) ) { + // v.x or v.z is the largest magnitude component, swap them + l = this->mm[0]*this->mm[0] + this->mm[2]*this->mm[2]; + l = static_cast(T(1)/sqrt(double(l))); + u.mm[0] = -this->mm[2]*l; + u.mm[1] = T(0); + u.mm[2] = +this->mm[0]*l; + } else { + // W.y or W.z is the largest magnitude component, swap them + l = this->mm[1]*this->mm[1] + this->mm[2]*this->mm[2]; + l = static_cast(T(1)/sqrt(double(l))); + u.mm[0] = T(0); + u.mm[1] = +this->mm[2]*l; + u.mm[2] = -this->mm[1]*l; + } + + return u; + } + + /// Return a vector with the components of this in ascending order + Vec3 sorted() const + { + Vec3 r(*this); + if( r.mm[0] > r.mm[1] ) std::swap(r.mm[0], r.mm[1]); + if( r.mm[1] > r.mm[2] ) std::swap(r.mm[1], r.mm[2]); + if( r.mm[0] > r.mm[1] ) std::swap(r.mm[0], r.mm[1]); + return r; + } + + /// Return the vector (z, y, x) + Vec3 reversed() const + { + return Vec3(this->mm[2], this->mm[1], this->mm[0]); + } + + /// Predefined constants, e.g. Vec3d v = Vec3d::xNegAxis(); + static Vec3 zero() { return Vec3(0, 0, 0); } + static Vec3 ones() { return Vec3(1, 1, 1); } +}; + + +/// Equality operator, does exact floating point comparisons +template +inline bool operator==(const Vec3 &v0, const Vec3 &v1) +{ + return isExactlyEqual(v0[0], v1[0]) && isExactlyEqual(v0[1], v1[1]) + && isExactlyEqual(v0[2], v1[2]); +} + +/// Inequality operator, does exact floating point comparisons +template +inline bool operator!=(const Vec3 &v0, const Vec3 &v1) { return !(v0==v1); } + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec3::type> operator*(S scalar, const Vec3 &v) { return v*scalar; } + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec3::type> operator*(const Vec3 &v, S scalar) +{ + Vec3::type> result(v); + result *= scalar; + return result; +} + +/// Multiply corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec3::type> operator*(const Vec3 &v0, const Vec3 &v1) +{ + Vec3::type> result(v0[0] * v1[0], v0[1] * v1[1], v0[2] * v1[2]); + return result; +} + + +/// Divide @a scalar by each element of the given vector and return the result. +template +inline Vec3::type> operator/(S scalar, const Vec3 &v) +{ + return Vec3::type>(scalar/v[0], scalar/v[1], scalar/v[2]); +} + +/// Divide each element of the given vector by @a scalar and return the result. +template +inline Vec3::type> operator/(const Vec3 &v, S scalar) +{ + Vec3::type> result(v); + result /= scalar; + return result; +} + +/// Divide corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec3::type> operator/(const Vec3 &v0, const Vec3 &v1) +{ + Vec3::type> result(v0[0] / v1[0], v0[1] / v1[1], v0[2] / v1[2]); + return result; +} + +/// Add corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec3::type> operator+(const Vec3 &v0, const Vec3 &v1) +{ + Vec3::type> result(v0); + result += v1; + return result; +} + +/// Add @a scalar to each element of the given vector and return the result. +template +inline Vec3::type> operator+(const Vec3 &v, S scalar) +{ + Vec3::type> result(v); + result += scalar; + return result; +} + +/// Subtract corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec3::type> operator-(const Vec3 &v0, const Vec3 &v1) +{ + Vec3::type> result(v0); + result -= v1; + return result; +} + +/// Subtract @a scalar from each element of the given vector and return the result. +template +inline Vec3::type> operator-(const Vec3 &v, S scalar) +{ + Vec3::type> result(v); + result -= scalar; + return result; +} + +/// Angle between two vectors, the result is between [0, pi], +/// e.g. double a = Vec3d::angle(v1,v2); +template +inline T angle(const Vec3 &v1, const Vec3 &v2) +{ + Vec3 c = v1.cross(v2); + return static_cast(atan2(c.length(), v1.dot(v2))); +} + +template +inline bool +isApproxEqual(const Vec3& a, const Vec3& b) +{ + return a.eq(b); +} +template +inline bool +isApproxEqual(const Vec3& a, const Vec3& b, const Vec3& eps) +{ + return isApproxEqual(a.x(), b.x(), eps.x()) && + isApproxEqual(a.y(), b.y(), eps.y()) && + isApproxEqual(a.z(), b.z(), eps.z()); +} + +template +inline Vec3 +Abs(const Vec3& v) +{ + return Vec3(Abs(v[0]), Abs(v[1]), Abs(v[2])); +} + +/// Orthonormalize vectors v1, v2 and v3 and store back the resulting +/// basis e.g. Vec3d::orthonormalize(v1,v2,v3); +template +inline void orthonormalize(Vec3 &v1, Vec3 &v2, Vec3 &v3) +{ + // If the input vectors are v0, v1, and v2, then the Gram-Schmidt + // orthonormalization produces vectors u0, u1, and u2 as follows, + // + // u0 = v0/|v0| + // u1 = (v1-(u0*v1)u0)/|v1-(u0*v1)u0| + // u2 = (v2-(u0*v2)u0-(u1*v2)u1)/|v2-(u0*v2)u0-(u1*v2)u1| + // + // where |A| indicates length of vector A and A*B indicates dot + // product of vectors A and B. + + // compute u0 + v1.normalize(); + + // compute u1 + T d0 = v1.dot(v2); + v2 -= v1*d0; + v2.normalize(); + + // compute u2 + T d1 = v2.dot(v3); + d0 = v1.dot(v3); + v3 -= v1*d0 + v2*d1; + v3.normalize(); +} + +/// @remark We are switching to a more explicit name because the semantics +/// are different from std::min/max. In that case, the function returns a +/// reference to one of the objects based on a comparator. Here, we must +/// fabricate a new object which might not match either of the inputs. + +/// Return component-wise minimum of the two vectors. +template +inline Vec3 minComponent(const Vec3 &v1, const Vec3 &v2) +{ + return Vec3( + std::min(v1.x(), v2.x()), + std::min(v1.y(), v2.y()), + std::min(v1.z(), v2.z())); +} + +/// Return component-wise maximum of the two vectors. +template +inline Vec3 maxComponent(const Vec3 &v1, const Vec3 &v2) +{ + return Vec3( + std::max(v1.x(), v2.x()), + std::max(v1.y(), v2.y()), + std::max(v1.z(), v2.z())); +} + +/// @brief Return a vector with the exponent applied to each of +/// the components of the input vector. +template +inline Vec3 Exp(Vec3 v) { return v.exp(); } + +/// @brief Return a vector with log applied to each of +/// the components of the input vector. +template +inline Vec3 Log(Vec3 v) { return v.log(); } + +using Vec3i = Vec3; +using Vec3ui = Vec3; +using Vec3s = Vec3; +using Vec3d = Vec3; + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_VEC3_HAS_BEEN_INCLUDED diff --git a/openvdb/math/Vec4.h b/openvdb/math/Vec4.h new file mode 100644 index 00000000..25ea0eb8 --- /dev/null +++ b/openvdb/math/Vec4.h @@ -0,0 +1,566 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_MATH_VEC4_HAS_BEEN_INCLUDED +#define OPENVDB_MATH_VEC4_HAS_BEEN_INCLUDED + +#include +#include "Math.h" +#include "Tuple.h" +#include "Vec3.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +template class Mat3; + +template +class Vec4: public Tuple<4, T> +{ +public: + using value_type = T; + using ValueType = T; + + /// Trivial constructor, the vector is NOT initialized + Vec4() {} + + /// @brief Construct a vector all of whose components have the given value. + explicit Vec4(T val) { this->mm[0] = this->mm[1] = this->mm[2] = this->mm[3] = val; } + + /// Constructor with four arguments, e.g. Vec4f v(1,2,3,4); + Vec4(T x, T y, T z, T w) + { + this->mm[0] = x; + this->mm[1] = y; + this->mm[2] = z; + this->mm[3] = w; + } + + /// Constructor with array argument, e.g. float a[4]; Vec4f v(a); + template + Vec4(Source *a) + { + this->mm[0] = static_cast(a[0]); + this->mm[1] = static_cast(a[1]); + this->mm[2] = static_cast(a[2]); + this->mm[3] = static_cast(a[3]); + } + + /// Conversion constructor + template + explicit Vec4(const Tuple<4, Source> &v) + { + this->mm[0] = static_cast(v[0]); + this->mm[1] = static_cast(v[1]); + this->mm[2] = static_cast(v[2]); + this->mm[3] = static_cast(v[3]); + } + + /// @brief Construct a vector all of whose components have the given value, + /// which may be of an arithmetic type different from this vector's value type. + /// @details Type conversion warnings are suppressed. + template + explicit Vec4(Other val, + typename std::enable_if::value, Conversion>::type = Conversion{}) + { + this->mm[0] = this->mm[1] = this->mm[2] = this->mm[3] = static_cast(val); + } + + /// Reference to the component, e.g. v.x() = 4.5f; + T& x() { return this->mm[0]; } + T& y() { return this->mm[1]; } + T& z() { return this->mm[2]; } + T& w() { return this->mm[3]; } + + /// Get the component, e.g. float f = v.y(); + T x() const { return this->mm[0]; } + T y() const { return this->mm[1]; } + T z() const { return this->mm[2]; } + T w() const { return this->mm[3]; } + + T* asPointer() { return this->mm; } + const T* asPointer() const { return this->mm; } + + /// Alternative indexed reference to the elements + T& operator()(int i) { return this->mm[i]; } + + /// Alternative indexed constant reference to the elements, + T operator()(int i) const { return this->mm[i]; } + + /// Returns a Vec3 with the first three elements of the Vec4. + Vec3 getVec3() const { return Vec3(this->mm[0], this->mm[1], this->mm[2]); } + + /// "this" vector gets initialized to [x, y, z, w], + /// calling v.init(); has same effect as calling v = Vec4::zero(); + const Vec4& init(T x=0, T y=0, T z=0, T w=0) + { + this->mm[0] = x; this->mm[1] = y; this->mm[2] = z; this->mm[3] = w; + return *this; + } + + /// Set "this" vector to zero + const Vec4& setZero() + { + this->mm[0] = 0; this->mm[1] = 0; this->mm[2] = 0; this->mm[3] = 0; + return *this; + } + + /// Assignment operator + template + const Vec4& operator=(const Vec4 &v) + { + // note: don't static_cast because that suppresses warnings + this->mm[0] = v[0]; + this->mm[1] = v[1]; + this->mm[2] = v[2]; + this->mm[3] = v[3]; + + return *this; + } + + /// Test if "this" vector is equivalent to vector v with tolerance + /// of eps + bool eq(const Vec4 &v, T eps = static_cast(1.0e-8)) const + { + return isApproxEqual(this->mm[0], v.mm[0], eps) && + isApproxEqual(this->mm[1], v.mm[1], eps) && + isApproxEqual(this->mm[2], v.mm[2], eps) && + isApproxEqual(this->mm[3], v.mm[3], eps); + } + + /// Negation operator, for e.g. v1 = -v2; + Vec4 operator-() const + { + return Vec4( + -this->mm[0], + -this->mm[1], + -this->mm[2], + -this->mm[3]); + } + + /// this = v1 + v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.add(v1,v); + template + const Vec4& add(const Vec4 &v1, const Vec4 &v2) + { + this->mm[0] = v1[0] + v2[0]; + this->mm[1] = v1[1] + v2[1]; + this->mm[2] = v1[2] + v2[2]; + this->mm[3] = v1[3] + v2[3]; + + return *this; + } + + + /// this = v1 - v2 + /// "this", v1 and v2 need not be distinct objects, e.g. v.sub(v1,v); + template + const Vec4& sub(const Vec4 &v1, const Vec4 &v2) + { + this->mm[0] = v1[0] - v2[0]; + this->mm[1] = v1[1] - v2[1]; + this->mm[2] = v1[2] - v2[2]; + this->mm[3] = v1[3] - v2[3]; + + return *this; + } + + /// this = scalar*v, v need not be a distinct object from "this", + /// e.g. v.scale(1.5,v1); + template + const Vec4& scale(T0 scale, const Vec4 &v) + { + this->mm[0] = scale * v[0]; + this->mm[1] = scale * v[1]; + this->mm[2] = scale * v[2]; + this->mm[3] = scale * v[3]; + + return *this; + } + + template + const Vec4 &div(T0 scalar, const Vec4 &v) + { + this->mm[0] = v[0] / scalar; + this->mm[1] = v[1] / scalar; + this->mm[2] = v[2] / scalar; + this->mm[3] = v[3] / scalar; + + return *this; + } + + /// Dot product + T dot(const Vec4 &v) const + { + return (this->mm[0]*v.mm[0] + this->mm[1]*v.mm[1] + + this->mm[2]*v.mm[2] + this->mm[3]*v.mm[3]); + } + + /// Length of the vector + T length() const + { + return sqrt( + this->mm[0]*this->mm[0] + + this->mm[1]*this->mm[1] + + this->mm[2]*this->mm[2] + + this->mm[3]*this->mm[3]); + } + + + /// Squared length of the vector, much faster than length() as it + /// does not involve square root + T lengthSqr() const + { + return (this->mm[0]*this->mm[0] + this->mm[1]*this->mm[1] + + this->mm[2]*this->mm[2] + this->mm[3]*this->mm[3]); + } + + /// Return a reference to itself after the exponent has been + /// applied to all the vector components. + inline const Vec4& exp() + { + this->mm[0] = std::exp(this->mm[0]); + this->mm[1] = std::exp(this->mm[1]); + this->mm[2] = std::exp(this->mm[2]); + this->mm[3] = std::exp(this->mm[3]); + return *this; + } + + /// Return a reference to itself after log has been + /// applied to all the vector components. + inline const Vec4& log() + { + this->mm[0] = std::log(this->mm[0]); + this->mm[1] = std::log(this->mm[1]); + this->mm[2] = std::log(this->mm[2]); + this->mm[3] = std::log(this->mm[3]); + return *this; + } + + /// Return the sum of all the vector components. + inline T sum() const + { + return this->mm[0] + this->mm[1] + this->mm[2] + this->mm[3]; + } + + /// Return the product of all the vector components. + inline T product() const + { + return this->mm[0] * this->mm[1] * this->mm[2] * this->mm[3]; + } + + /// this = normalized this + bool normalize(T eps = static_cast(1.0e-8)) + { + T d = length(); + if (isApproxEqual(d, T(0), eps)) { + return false; + } + *this *= (T(1) / d); + return true; + } + + /// return normalized this, throws if null vector + Vec4 unit(T eps=0) const + { + T d; + return unit(eps, d); + } + + /// return normalized this and length, throws if null vector + Vec4 unit(T eps, T& len) const + { + len = length(); + if (isApproxEqual(len, T(0), eps)) { + throw ArithmeticError("Normalizing null 4-vector"); + } + return *this / len; + } + + /// return normalized this, or (1, 0, 0, 0) if this is null vector + Vec4 unitSafe() const + { + T l2 = lengthSqr(); + return l2 ? *this / static_cast(sqrt(l2)) : Vec4(1, 0, 0, 0); + } + + /// Multiply each element of this vector by @a scalar. + template + const Vec4 &operator*=(S scalar) + { + this->mm[0] *= scalar; + this->mm[1] *= scalar; + this->mm[2] *= scalar; + this->mm[3] *= scalar; + return *this; + } + + /// Multiply each element of this vector by the corresponding element of the given vector. + template + const Vec4 &operator*=(const Vec4 &v1) + { + this->mm[0] *= v1[0]; + this->mm[1] *= v1[1]; + this->mm[2] *= v1[2]; + this->mm[3] *= v1[3]; + + return *this; + } + + /// Divide each element of this vector by @a scalar. + template + const Vec4 &operator/=(S scalar) + { + this->mm[0] /= scalar; + this->mm[1] /= scalar; + this->mm[2] /= scalar; + this->mm[3] /= scalar; + return *this; + } + + /// Divide each element of this vector by the corresponding element of the given vector. + template + const Vec4 &operator/=(const Vec4 &v1) + { + this->mm[0] /= v1[0]; + this->mm[1] /= v1[1]; + this->mm[2] /= v1[2]; + this->mm[3] /= v1[3]; + return *this; + } + + /// Add @a scalar to each element of this vector. + template + const Vec4 &operator+=(S scalar) + { + this->mm[0] += scalar; + this->mm[1] += scalar; + this->mm[2] += scalar; + this->mm[3] += scalar; + return *this; + } + + /// Add each element of the given vector to the corresponding element of this vector. + template + const Vec4 &operator+=(const Vec4 &v1) + { + this->mm[0] += v1[0]; + this->mm[1] += v1[1]; + this->mm[2] += v1[2]; + this->mm[3] += v1[3]; + return *this; + } + + /// Subtract @a scalar from each element of this vector. + template + const Vec4 &operator-=(S scalar) + { + this->mm[0] -= scalar; + this->mm[1] -= scalar; + this->mm[2] -= scalar; + this->mm[3] -= scalar; + return *this; + } + + /// Subtract each element of the given vector from the corresponding element of this vector. + template + const Vec4 &operator-=(const Vec4 &v1) + { + this->mm[0] -= v1[0]; + this->mm[1] -= v1[1]; + this->mm[2] -= v1[2]; + this->mm[3] -= v1[3]; + return *this; + } + + // Number of cols, rows, elements + static unsigned numRows() { return 1; } + static unsigned numColumns() { return 4; } + static unsigned numElements() { return 4; } + + /// Predefined constants, e.g. Vec4f v = Vec4f::xNegAxis(); + static Vec4 zero() { return Vec4(0, 0, 0, 0); } + static Vec4 origin() { return Vec4(0, 0, 0, 1); } + static Vec4 ones() { return Vec4(1, 1, 1, 1); } +}; + +/// Equality operator, does exact floating point comparisons +template +inline bool operator==(const Vec4 &v0, const Vec4 &v1) +{ + return + isExactlyEqual(v0[0], v1[0]) && + isExactlyEqual(v0[1], v1[1]) && + isExactlyEqual(v0[2], v1[2]) && + isExactlyEqual(v0[3], v1[3]); +} + +/// Inequality operator, does exact floating point comparisons +template +inline bool operator!=(const Vec4 &v0, const Vec4 &v1) { return !(v0==v1); } + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec4::type> operator*(S scalar, const Vec4 &v) +{ return v*scalar; } + +/// Multiply each element of the given vector by @a scalar and return the result. +template +inline Vec4::type> operator*(const Vec4 &v, S scalar) +{ + Vec4::type> result(v); + result *= scalar; + return result; +} + +/// Multiply corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec4::type> operator*(const Vec4 &v0, const Vec4 &v1) +{ + Vec4::type> result(v0[0]*v1[0], + v0[1]*v1[1], + v0[2]*v1[2], + v0[3]*v1[3]); + return result; +} + +/// Divide @a scalar by each element of the given vector and return the result. +template +inline Vec4::type> operator/(S scalar, const Vec4 &v) +{ + return Vec4::type>(scalar/v[0], + scalar/v[1], + scalar/v[2], + scalar/v[3]); +} + +/// Divide each element of the given vector by @a scalar and return the result. +template +inline Vec4::type> operator/(const Vec4 &v, S scalar) +{ + Vec4::type> result(v); + result /= scalar; + return result; +} + +/// Divide corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec4::type> operator/(const Vec4 &v0, const Vec4 &v1) +{ + Vec4::type> + result(v0[0]/v1[0], v0[1]/v1[1], v0[2]/v1[2], v0[3]/v1[3]); + return result; +} + +/// Add corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec4::type> operator+(const Vec4 &v0, const Vec4 &v1) +{ + Vec4::type> result(v0); + result += v1; + return result; +} + +/// Add @a scalar to each element of the given vector and return the result. +template +inline Vec4::type> operator+(const Vec4 &v, S scalar) +{ + Vec4::type> result(v); + result += scalar; + return result; +} + +/// Subtract corresponding elements of @a v0 and @a v1 and return the result. +template +inline Vec4::type> operator-(const Vec4 &v0, const Vec4 &v1) +{ + Vec4::type> result(v0); + result -= v1; + return result; +} + +/// Subtract @a scalar from each element of the given vector and return the result. +template +inline Vec4::type> operator-(const Vec4 &v, S scalar) +{ + Vec4::type> result(v); + result -= scalar; + return result; +} + +template +inline bool +isApproxEqual(const Vec4& a, const Vec4& b) +{ + return a.eq(b); +} +template +inline bool +isApproxEqual(const Vec4& a, const Vec4& b, const Vec4& eps) +{ + return isApproxEqual(a[0], b[0], eps[0]) && + isApproxEqual(a[1], b[1], eps[1]) && + isApproxEqual(a[2], b[2], eps[2]) && + isApproxEqual(a[3], b[3], eps[3]); +} + +template +inline Vec4 +Abs(const Vec4& v) +{ + return Vec4(Abs(v[0]), Abs(v[1]), Abs(v[2]), Abs(v[3])); +} + +/// @remark We are switching to a more explicit name because the semantics +/// are different from std::min/max. In that case, the function returns a +/// reference to one of the objects based on a comparator. Here, we must +/// fabricate a new object which might not match either of the inputs. + +/// Return component-wise minimum of the two vectors. +template +inline Vec4 minComponent(const Vec4 &v1, const Vec4 &v2) +{ + return Vec4( + std::min(v1.x(), v2.x()), + std::min(v1.y(), v2.y()), + std::min(v1.z(), v2.z()), + std::min(v1.w(), v2.w())); +} + +/// Return component-wise maximum of the two vectors. +template +inline Vec4 maxComponent(const Vec4 &v1, const Vec4 &v2) +{ + return Vec4( + std::max(v1.x(), v2.x()), + std::max(v1.y(), v2.y()), + std::max(v1.z(), v2.z()), + std::max(v1.w(), v2.w())); +} + +/// @brief Return a vector with the exponent applied to each of +/// the components of the input vector. +template +inline Vec4 Exp(Vec4 v) { return v.exp(); } + +/// @brief Return a vector with log applied to each of +/// the components of the input vector. +template +inline Vec4 Log(Vec4 v) { return v.log(); } + +using Vec4i = Vec4; +using Vec4ui = Vec4; +using Vec4s = Vec4; +using Vec4d = Vec4; + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_MATH_VEC4_HAS_BEEN_INCLUDED diff --git a/openvdb/openvdb.cc b/openvdb/openvdb.cc new file mode 100644 index 00000000..79bcdb51 --- /dev/null +++ b/openvdb/openvdb.cc @@ -0,0 +1,161 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "openvdb.h" +#include "io/DelayedLoadMetadata.h" +//#ifdef OPENVDB_ENABLE_POINTS +#include "points/PointDataGrid.h" +//#endif +#include "tools/PointIndexGrid.h" +#include "util/logging.h" +#include +#ifdef OPENVDB_USE_BLOSC +#include +#endif + +// If using an OPENVDB_ABI_VERSION_NUMBER that has been deprecated, issue an error +// directive. This can be optionally suppressed by defining OPENVDB_USE_DEPRECATED_ABI. +// Do this in the .cc of openvdb.cc to ensure this decision is made at the time of +// building the core library +#ifndef OPENVDB_USE_DEPRECATED_ABI + #if OPENVDB_ABI_VERSION_NUMBER == 4 + #error ABI = 4 is deprecated, define OPENVDB_USE_DEPRECATED_ABI to suppress this error + #elif OPENVDB_ABI_VERSION_NUMBER < 4 + #error ABI <= 3 is no longer supported + #endif +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +typedef tbb::mutex Mutex; +typedef Mutex::scoped_lock Lock; + +namespace { +// Declare this at file scope to ensure thread-safe initialization. +Mutex sInitMutex; +bool sIsInitialized = false; +} + +void +initialize() +{ + Lock lock(sInitMutex); + if (sIsInitialized) return; + + logging::initialize(); + + // Register metadata. + Metadata::clearRegistry(); + BoolMetadata::registerType(); + DoubleMetadata::registerType(); + FloatMetadata::registerType(); + Int32Metadata::registerType(); + Int64Metadata::registerType(); + StringMetadata::registerType(); + Vec2IMetadata::registerType(); + Vec2SMetadata::registerType(); + Vec2DMetadata::registerType(); + Vec3IMetadata::registerType(); + Vec3SMetadata::registerType(); + Vec3DMetadata::registerType(); + Vec4IMetadata::registerType(); + Vec4SMetadata::registerType(); + Vec4DMetadata::registerType(); + Mat4SMetadata::registerType(); + Mat4DMetadata::registerType(); + + // Register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::UnitaryMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Register common grid types. + GridBase::clearRegistry(); + BoolGrid::registerGrid(); + MaskGrid::registerGrid(); + FloatGrid::registerGrid(); + DoubleGrid::registerGrid(); + Int32Grid::registerGrid(); + Int64Grid::registerGrid(); + StringGrid::registerGrid(); + Vec3IGrid::registerGrid(); + Vec3SGrid::registerGrid(); + Vec3DGrid::registerGrid(); + + // Register types associated with point index grids. + Metadata::registerType(typeNameAsString(), Int32Metadata::createMetadata); + Metadata::registerType(typeNameAsString(), Int64Metadata::createMetadata); + tools::PointIndexGrid::registerGrid(); + + // Register types associated with point data grids. +//#ifdef OPENVDB_ENABLE_POINTS + points::internal::initialize(); +//#endif + + // Register delay load metadata + io::DelayedLoadMetadata::registerType(); + +#ifdef OPENVDB_USE_BLOSC + blosc_init(); + if (blosc_set_compressor("lz4") < 0) { + OPENVDB_LOG_WARN("Blosc LZ4 compressor is unavailable"); + } + /// @todo blosc_set_nthreads(int nthreads); +#endif + +#ifdef __ICC +// Disable ICC "assignment to statically allocated variable" warning. +// This assignment is mutex-protected and therefore thread-safe. +__pragma(warning(disable:1711)) +#endif + + sIsInitialized = true; + +#ifdef __ICC +__pragma(warning(default:1711)) +#endif +} + + +void +uninitialize() +{ + Lock lock(sInitMutex); + +#ifdef __ICC +// Disable ICC "assignment to statically allocated variable" warning. +// This assignment is mutex-protected and therefore thread-safe. +__pragma(warning(disable:1711)) +#endif + + sIsInitialized = false; + +#ifdef __ICC +__pragma(warning(default:1711)) +#endif + + Metadata::clearRegistry(); + GridBase::clearRegistry(); + math::MapRegistry::clear(); + +//#ifdef OPENVDB_ENABLE_POINTS + points::internal::uninitialize(); +//#endif + +#ifdef OPENVDB_USE_BLOSC + // We don't want to destroy Blosc, because it might have been + // initialized by some other library. + //blosc_destroy(); +#endif +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/openvdb.h b/openvdb/openvdb.h new file mode 100644 index 00000000..dd543180 --- /dev/null +++ b/openvdb/openvdb.h @@ -0,0 +1,68 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_OPENVDB_HAS_BEEN_INCLUDED +#define OPENVDB_OPENVDB_HAS_BEEN_INCLUDED + +#include "Platform.h" +#include "Types.h" +#include "Metadata.h" +#include "math/Maps.h" +#include "math/Transform.h" +#include "Grid.h" +#include "tree/Tree.h" +#include "io/File.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// Common tree types +using BoolTree = tree::Tree4::Type; +using DoubleTree = tree::Tree4::Type; +using FloatTree = tree::Tree4::Type; +using Int32Tree = tree::Tree4::Type; +using Int64Tree = tree::Tree4::Type; +using MaskTree = tree::Tree4::Type; +using StringTree = tree::Tree4::Type; +using UInt32Tree = tree::Tree4::Type; +using Vec2DTree = tree::Tree4::Type; +using Vec2ITree = tree::Tree4::Type; +using Vec2STree = tree::Tree4::Type; +using Vec3DTree = tree::Tree4::Type; +using Vec3ITree = tree::Tree4::Type; +using Vec3STree = tree::Tree4::Type; +using ScalarTree = FloatTree; +using TopologyTree = MaskTree; +using Vec3dTree = Vec3DTree; +using Vec3fTree = Vec3STree; +using VectorTree = Vec3fTree; + +/// Common grid types +using BoolGrid = Grid; +using DoubleGrid = Grid; +using FloatGrid = Grid; +using Int32Grid = Grid; +using Int64Grid = Grid; +using MaskGrid = Grid; +using StringGrid = Grid; +using Vec3DGrid = Grid; +using Vec3IGrid = Grid; +using Vec3SGrid = Grid; +using ScalarGrid = FloatGrid; +using TopologyGrid = MaskGrid; +using Vec3dGrid = Vec3DGrid; +using Vec3fGrid = Vec3SGrid; +using VectorGrid = Vec3fGrid; + +/// Global registration of basic types +OPENVDB_API void initialize(); + +/// Global deregistration of basic types +OPENVDB_API void uninitialize(); + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_OPENVDB_HAS_BEEN_INCLUDED diff --git a/openvdb/points/AttributeArray.cc b/openvdb/points/AttributeArray.cc new file mode 100644 index 00000000..972be014 --- /dev/null +++ b/openvdb/points/AttributeArray.cc @@ -0,0 +1,210 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeArray.cc + +#include "AttributeArray.h" +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +//////////////////////////////////////// + + +namespace { + +using AttributeFactoryMap = std::map; + +struct LockedAttributeRegistry +{ + tbb::spin_mutex mMutex; + AttributeFactoryMap mMap; +}; + +// Global function for accessing the registry +LockedAttributeRegistry* +getAttributeRegistry() +{ + static LockedAttributeRegistry registry; + return ®istry; +} + +} // unnamed namespace + + +//////////////////////////////////////// + +// AttributeArray::ScopedRegistryLock implementation + +AttributeArray::ScopedRegistryLock::ScopedRegistryLock() + : lock(getAttributeRegistry()->mMutex) +{ +} + + +//////////////////////////////////////// + +// AttributeArray implementation + + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +AttributeArray::AttributeArray(const AttributeArray& rhs) + : AttributeArray(rhs, tbb::spin_mutex::scoped_lock(rhs.mMutex)) +{ +} + + +AttributeArray::AttributeArray(const AttributeArray& rhs, const tbb::spin_mutex::scoped_lock&) +#else +AttributeArray::AttributeArray(const AttributeArray& rhs) +#endif + : mIsUniform(rhs.mIsUniform) + , mFlags(rhs.mFlags) + , mUsePagedRead(rhs.mUsePagedRead) + , mOutOfCore(rhs.mOutOfCore) + , mPageHandle() +{ + if (mFlags & PARTIALREAD) mCompressedBytes = rhs.mCompressedBytes; + else if (rhs.mPageHandle) mPageHandle = rhs.mPageHandle->copy(); +} + + +AttributeArray& +AttributeArray::operator=(const AttributeArray& rhs) +{ + // if this AttributeArray has been partially read, zero the compressed bytes, + // so the page handle won't attempt to clean up invalid memory + if (mFlags & PARTIALREAD) mCompressedBytes = 0; + mIsUniform = rhs.mIsUniform; + mFlags = rhs.mFlags; + mUsePagedRead = rhs.mUsePagedRead; + mOutOfCore = rhs.mOutOfCore; + if (mFlags & PARTIALREAD) mCompressedBytes = rhs.mCompressedBytes; + else if (rhs.mPageHandle) mPageHandle = rhs.mPageHandle->copy(); + else mPageHandle.reset(); + return *this; +} +#endif + + +AttributeArray::Ptr +AttributeArray::create(const NamePair& type, Index length, Index stride, + bool constantStride, const ScopedRegistryLock* lock) +{ + auto* registry = getAttributeRegistry(); + tbb::spin_mutex::scoped_lock _lock; + if (!lock) _lock.acquire(registry->mMutex); + + auto iter = registry->mMap.find(type); + if (iter == registry->mMap.end()) { + OPENVDB_THROW(LookupError, + "Cannot create attribute of unregistered type " << type.first << "_" << type.second); + } + return (iter->second)(length, stride, constantStride); +} + + +bool +AttributeArray::isRegistered(const NamePair& type, const ScopedRegistryLock* lock) +{ + LockedAttributeRegistry* registry = getAttributeRegistry(); + tbb::spin_mutex::scoped_lock _lock; + if (!lock) _lock.acquire(registry->mMutex); + return (registry->mMap.find(type) != registry->mMap.end()); +} + + +void +AttributeArray::clearRegistry(const ScopedRegistryLock* lock) +{ + LockedAttributeRegistry* registry = getAttributeRegistry(); + tbb::spin_mutex::scoped_lock _lock; + if (!lock) _lock.acquire(registry->mMutex); + registry->mMap.clear(); +} + + +void +AttributeArray::registerType(const NamePair& type, FactoryMethod factory, const ScopedRegistryLock* lock) +{ + { // check the type of the AttributeArray generated by the factory method + auto array = (*factory)(/*length=*/0, /*stride=*/0, /*constantStride=*/false); + const NamePair& factoryType = array->type(); + if (factoryType != type) { + OPENVDB_THROW(KeyError, "Attribute type " << type.first << "_" << type.second + << " does not match the type created by the factory method " + << factoryType.first << "_" << factoryType.second << "."); + } + } + + LockedAttributeRegistry* registry = getAttributeRegistry(); + tbb::spin_mutex::scoped_lock _lock; + if (!lock) _lock.acquire(registry->mMutex); + + registry->mMap[type] = factory; +} + + +void +AttributeArray::unregisterType(const NamePair& type, const ScopedRegistryLock* lock) +{ + LockedAttributeRegistry* registry = getAttributeRegistry(); + tbb::spin_mutex::scoped_lock _lock; + if (!lock) _lock.acquire(registry->mMutex); + + registry->mMap.erase(type); +} + + +void +AttributeArray::setTransient(bool state) +{ + if (state) mFlags = static_cast(mFlags | Int16(TRANSIENT)); + else mFlags = static_cast(mFlags & ~Int16(TRANSIENT)); +} + + +void +AttributeArray::setHidden(bool state) +{ + if (state) mFlags = static_cast(mFlags | Int16(HIDDEN)); + else mFlags = static_cast(mFlags & ~Int16(HIDDEN)); +} + + +void +AttributeArray::setStreaming(bool state) +{ + if (state) mFlags = static_cast(mFlags | Int16(STREAMING)); + else mFlags = static_cast(mFlags & ~Int16(STREAMING)); +} + + +void +AttributeArray::setConstantStride(bool state) +{ + if (state) mFlags = static_cast(mFlags | Int16(CONSTANTSTRIDE)); + else mFlags = static_cast(mFlags & ~Int16(CONSTANTSTRIDE)); +} + + +bool +AttributeArray::operator==(const AttributeArray& other) const +{ + this->loadData(); + other.loadData(); + + if (this->mUsePagedRead != other.mUsePagedRead || + this->mFlags != other.mFlags) return false; + return this->isEqual(other); +} + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/points/AttributeArray.h b/openvdb/points/AttributeArray.h new file mode 100644 index 00000000..b1ac971a --- /dev/null +++ b/openvdb/points/AttributeArray.h @@ -0,0 +1,2339 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeArray.h +/// +/// @authors Dan Bailey, Mihai Alden, Nick Avramoussis, James Bird, Khang Ngo +/// +/// @brief Attribute Array storage templated on type and compression codec. + +#ifndef OPENVDB_POINTS_ATTRIBUTE_ARRAY_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_ATTRIBUTE_ARRAY_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include // MappedFile +#include // COMPRESS_BLOSC + +#include "IndexIterator.h" +#include "StreamCompression.h" + +#include +#include + +#include +#include +#include +#include + + +class TestAttributeArray; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + + +using NamePair = std::pair; + +namespace points { + + +//////////////////////////////////////// + +// Utility methods + +template +inline IntegerT +floatingPointToFixedPoint(const FloatT s) +{ + static_assert(std::is_unsigned::value, "IntegerT must be unsigned"); + if (FloatT(0.0) > s) return std::numeric_limits::min(); + else if (FloatT(1.0) <= s) return std::numeric_limits::max(); + return IntegerT(std::floor(s * FloatT(std::numeric_limits::max()))); +} + + +template +inline FloatT +fixedPointToFloatingPoint(const IntegerT s) +{ + static_assert(std::is_unsigned::value, "IntegerT must be unsigned"); + return FloatT(s) / FloatT((std::numeric_limits::max())); +} + +template +inline IntegerVectorT +floatingPointToFixedPoint(const math::Vec3& v) +{ + return IntegerVectorT( + floatingPointToFixedPoint(v.x()), + floatingPointToFixedPoint(v.y()), + floatingPointToFixedPoint(v.z())); +} + +template +inline FloatVectorT +fixedPointToFloatingPoint(const math::Vec3& v) +{ + return FloatVectorT( + fixedPointToFloatingPoint(v.x()), + fixedPointToFloatingPoint(v.y()), + fixedPointToFloatingPoint(v.z())); +} + + +//////////////////////////////////////// + + +/// Base class for storing attribute data +class OPENVDB_API AttributeArray +{ +protected: + struct AccessorBase; + template struct Accessor; + + using AccessorBasePtr = std::shared_ptr; + +public: + enum Flag { + TRANSIENT = 0x1, /// by default not written to disk + HIDDEN = 0x2, /// hidden from UIs or iterators + OUTOFCORE = 0x4, /// data not yet loaded from disk (deprecated flag as of ABI=5) + CONSTANTSTRIDE = 0x8, /// stride size does not vary in the array + STREAMING = 0x10, /// streaming mode collapses attributes when first accessed + PARTIALREAD = 0x20 /// data has been partially read (compressed bytes is used) + }; + + enum SerializationFlag { + WRITESTRIDED = 0x1, /// data is marked as strided when written + WRITEUNIFORM = 0x2, /// data is marked as uniform when written + WRITEMEMCOMPRESS = 0x4, /// data is marked as compressed in-memory when written + /// (deprecated flag as of ABI=6) + WRITEPAGED = 0x8 /// data is written out in pages + }; + + // Scoped Lock wrapper class that locks the AttributeArray registry mutex + class OPENVDB_API ScopedRegistryLock + { + tbb::spin_mutex::scoped_lock lock; + public: + ScopedRegistryLock(); + }; // class ScopedRegistryLock + + using Ptr = std::shared_ptr; + using ConstPtr = std::shared_ptr; + + using FactoryMethod = Ptr (*)(Index, Index, bool); + + template friend class AttributeHandle; + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + AttributeArray(): mPageHandle() { mOutOfCore = 0; } +#else + AttributeArray(): mPageHandle() {} +#endif + virtual ~AttributeArray() + { + // if this AttributeArray has been partially read, zero the compressed bytes, + // so the page handle won't attempt to clean up invalid memory + if (mFlags & PARTIALREAD) mCompressedBytes = 0; + } +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + AttributeArray(const AttributeArray& rhs); + AttributeArray& operator=(const AttributeArray& rhs); +#else + AttributeArray(const AttributeArray&) = default; + AttributeArray& operator=(const AttributeArray&) = default; +#endif + AttributeArray(AttributeArray&&) = default; + AttributeArray& operator=(AttributeArray&&) = default; + + /// Return a copy of this attribute. + virtual AttributeArray::Ptr copy() const = 0; + + /// Return a copy of this attribute. + /// @deprecated In-memory compression no longer supported, use AttributeArray::copy() instead. +#ifndef _MSC_VER + OPENVDB_DEPRECATED +#endif + virtual AttributeArray::Ptr copyUncompressed() const = 0; + + /// Return the number of elements in this array. + /// @note This does not count each data element in a strided array + virtual Index size() const = 0; + + /// Return the stride of this array. + /// @note a return value of zero means a non-constant stride + virtual Index stride() const = 0; + + /// Return the total number of data elements in this array. + /// @note This counts each data element in a strided array + virtual Index dataSize() const = 0; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Return the name of the value type of a single element in this array (e.g., "float" or "vec3d"). + virtual Name valueType() const = 0; + + /// Return the name of the codec used by this array (e.g., "trnc" or "fxpt"). + virtual Name codecType() const = 0; + + /// Return the size in bytes of the value type of a single element in this array. + /// (e.g. "float" -> 4 bytes, "vec3d" -> 24 bytes"). + virtual Index valueTypeSize() const = 0; + + /// Return the size in bytes of the storage type of a single element of this array. + /// @note If the Codec is a NullCodec, valueSize() == storageSize() + virtual Index storageTypeSize() const = 0; + + /// Return @c true if the value type is floating point + virtual bool valueTypeIsFloatingPoint() const = 0; + + /// Return @c true if the value type is a class (ie vector, matrix or quaternion return true) + virtual bool valueTypeIsClass() const = 0; + + /// Return @c true if the value type is a vector + virtual bool valueTypeIsVector() const = 0; + + /// Return @c true if the value type is a quaternion + virtual bool valueTypeIsQuaternion() const = 0; + + /// Return @c true if the value type is a matrix + virtual bool valueTypeIsMatrix() const = 0; +#endif + + /// Return the number of bytes of memory used by this attribute. + virtual size_t memUsage() const = 0; + + /// Create a new attribute array of the given (registered) type, length and stride. + /// @details If @a lock is non-null, the AttributeArray registry mutex + /// has already been locked + static Ptr create(const NamePair& type, Index length, Index stride = 1, + bool constantStride = true, const ScopedRegistryLock* lock = nullptr); + /// Return @c true if the given attribute type name is registered. + static bool isRegistered(const NamePair& type, const ScopedRegistryLock* lock = nullptr); + /// Clear the attribute type registry. + static void clearRegistry(const ScopedRegistryLock* lock = nullptr); + + /// Return the name of this attribute's type. + virtual const NamePair& type() const = 0; + /// Return @c true if this attribute is of the same type as the template parameter. + template + bool isType() const { return this->type() == AttributeArrayType::attributeType(); } + + /// Return @c true if this attribute has a value type the same as the template parameter + template + bool hasValueType() const { return this->type().first == typeNameAsString(); } + + /// @brief Set value at given index @a n from @a sourceIndex of another @a sourceArray. + /// @deprecated From ABI 6 on, use copyValues() with source-target index pairs. +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + // Windows does not allow base classes to be easily deprecated. +#ifndef _MSC_VER + OPENVDB_DEPRECATED +#endif +#endif + virtual void set(const Index n, const AttributeArray& sourceArray, const Index sourceIndex) = 0; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// @brief Copy values into this array from a source array to a target array + /// as referenced by an iterator. + /// @details Iterators must adhere to the ForwardIterator interface described + /// in the example below: + /// @code + /// struct MyIterator + /// { + /// // returns true if the iterator is referencing valid copying indices + /// operator bool() const; + /// // increments the iterator + /// MyIterator& operator++(); + /// // returns the source index that the iterator is referencing for copying + /// Index sourceIndex() const; + /// // returns the target index that the iterator is referencing for copying + /// Index targetIndex() const; + /// }; + /// @endcode + /// @note It is assumed that the strided storage sizes match, the arrays are both in-core, + /// and both value types are floating-point or both integer. + /// @note It is possible to use this method to write to a uniform target array + /// if the iterator does not have non-zero target indices. + /// @note This method is not thread-safe, it must be guaranteed that this array is not + /// concurrently modified by another thread and that the source array is also not modified. + template + void copyValuesUnsafe(const AttributeArray& sourceArray, const IterT& iter); + /// @brief Like copyValuesUnsafe(), but if @a compact is true, attempt to collapse this array. + /// @note This method is not thread-safe, it must be guaranteed that this array is not + /// concurrently modified by another thread and that the source array is also not modified. + template + void copyValues(const AttributeArray& sourceArray, const IterT& iter, bool compact = true); +#endif + + /// Return @c true if this array is stored as a single uniform value. + virtual bool isUniform() const = 0; + /// @brief If this array is uniform, replace it with an array of length size(). + /// @param fill if true, assign the uniform value to each element of the array. + virtual void expand(bool fill = true) = 0; + /// Replace the existing array with a uniform zero value. + virtual void collapse() = 0; + /// Compact the existing array to become uniform if all values are identical + virtual bool compact() = 0; + + /// @deprecated Previously this returned @c true if the array was compressed, + /// now it always returns @c false. + OPENVDB_DEPRECATED bool isCompressed() const { return false; } + /// @deprecated Previously this compressed the attribute array, now it does nothing. + // Windows does not allow base classes to be deprecated +#ifndef _MSC_VER + OPENVDB_DEPRECATED +#endif + virtual bool compress() = 0; + /// @deprecated Previously this uncompressed the attribute array, now it does nothing. + // Windows does not allow base classes to be deprecated +#ifndef _MSC_VER + OPENVDB_DEPRECATED +#endif + virtual bool decompress() = 0; + + /// @brief Specify whether this attribute should be hidden (e.g., from UI or iterators). + /// @details This is useful if the attribute is used for blind data or as scratch space + /// for a calculation. + /// @note Attributes are not hidden by default. + void setHidden(bool state); + /// Return @c true if this attribute is hidden (e.g., from UI or iterators). + bool isHidden() const { return bool(mFlags & HIDDEN); } + + /// @brief Specify whether this attribute should only exist in memory + /// and not be serialized during stream output. + /// @note Attributes are not transient by default. + void setTransient(bool state); + /// Return @c true if this attribute is not serialized during stream output. + bool isTransient() const { return bool(mFlags & TRANSIENT); } + + /// @brief Specify whether this attribute is to be streamed off disk, in which + /// case, the attributes are collapsed after being first loaded leaving them + /// in a destroyed state. + /// @note This operation is not thread-safe. + void setStreaming(bool state); + /// Return @c true if this attribute is in streaming mode. + bool isStreaming() const { return bool(mFlags & STREAMING); } + + /// Return @c true if this attribute has a constant stride + bool hasConstantStride() const { return bool(mFlags & CONSTANTSTRIDE); } + + /// @brief Retrieve the attribute array flags + uint8_t flags() const { return mFlags; } + + /// Read attribute metadata and buffers from a stream. + virtual void read(std::istream&) = 0; + /// Write attribute metadata and buffers to a stream. + /// @param outputTransient if true, write out transient attributes + virtual void write(std::ostream&, bool outputTransient) const = 0; + /// Write attribute metadata and buffers to a stream, don't write transient attributes. + virtual void write(std::ostream&) const = 0; + + /// Read attribute metadata from a stream. + virtual void readMetadata(std::istream&) = 0; + /// Write attribute metadata to a stream. + /// @param outputTransient if true, write out transient attributes + /// @param paged if true, data is written out in pages + virtual void writeMetadata(std::ostream&, bool outputTransient, bool paged) const = 0; + + /// Read attribute buffers from a stream. + virtual void readBuffers(std::istream&) = 0; + /// Write attribute buffers to a stream. + /// @param outputTransient if true, write out transient attributes + virtual void writeBuffers(std::ostream&, bool outputTransient) const = 0; + + /// Read attribute buffers from a paged stream. + virtual void readPagedBuffers(compression::PagedInputStream&) = 0; + /// Write attribute buffers to a paged stream. + /// @param outputTransient if true, write out transient attributes + virtual void writePagedBuffers(compression::PagedOutputStream&, bool outputTransient) const = 0; + + /// Ensures all data is in-core + virtual void loadData() const = 0; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Return @c true if all data has been loaded + virtual bool isDataLoaded() const = 0; +#endif + + /// Check the compressed bytes and flags. If they are equal, perform a deeper + /// comparison check necessary on the inherited types (TypedAttributeArray) + /// Requires non operator implementation due to inheritance + bool operator==(const AttributeArray& other) const; + bool operator!=(const AttributeArray& other) const { return !this->operator==(other); } + +private: + friend class ::TestAttributeArray; + + /// Virtual function used by the comparison operator to perform + /// comparisons on inherited types + virtual bool isEqual(const AttributeArray& other) const = 0; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Virtual function to retrieve the data buffer cast to a char byte array + virtual char* dataAsByteArray() = 0; + virtual const char* dataAsByteArray() const = 0; + + /// Private implementation for copyValues/copyValuesUnsafe + template + void doCopyValues(const AttributeArray& sourceArray, const IterT& iter, + bool rangeChecking = true); +#endif + +protected: +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + AttributeArray(const AttributeArray& rhs, const tbb::spin_mutex::scoped_lock&); +#endif + + /// @brief Specify whether this attribute has a constant stride or not. + void setConstantStride(bool state); + + /// Obtain an Accessor that stores getter and setter functors. + virtual AccessorBasePtr getAccessor() const = 0; + + /// Register a attribute type along with a factory function. + static void registerType(const NamePair& type, FactoryMethod, + const ScopedRegistryLock* lock = nullptr); + /// Remove a attribute type from the registry. + static void unregisterType(const NamePair& type, + const ScopedRegistryLock* lock = nullptr); + +#if OPENVDB_ABI_VERSION_NUMBER < 6 + + size_t mCompressedBytes = 0; + uint8_t mFlags = 0; + uint8_t mUsePagedRead = 0; +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + tbb::atomic mOutOfCore; // interpreted as bool +#endif + compression::PageHandle::Ptr mPageHandle; + +#else // #if OPENVDB_ABI_VERSION_NUMBER < 6 + + bool mIsUniform = true; + mutable tbb::spin_mutex mMutex; + uint8_t mFlags = 0; + uint8_t mUsePagedRead = 0; + tbb::atomic mOutOfCore; // interpreted as bool + /// used for out-of-core, paged reading + union { + compression::PageHandle::Ptr mPageHandle; + size_t mCompressedBytes; // as of ABI=6, this data is packed together to save memory + }; + +#endif +}; // class AttributeArray + + +//////////////////////////////////////// + + +/// Accessor base class for AttributeArray storage where type is not available +struct AttributeArray::AccessorBase { virtual ~AccessorBase() = default; }; + +/// Templated Accessor stores typed function pointers used in binding +/// AttributeHandles +template +struct AttributeArray::Accessor : public AttributeArray::AccessorBase +{ + using GetterPtr = T (*)(const AttributeArray* array, const Index n); + using SetterPtr = void (*)(AttributeArray* array, const Index n, const T& value); + using ValuePtr = void (*)(AttributeArray* array, const T& value); + + Accessor(GetterPtr getter, SetterPtr setter, ValuePtr collapser, ValuePtr filler) : + mGetter(getter), mSetter(setter), mCollapser(collapser), mFiller(filler) { } + + GetterPtr mGetter; + SetterPtr mSetter; + ValuePtr mCollapser; + ValuePtr mFiller; +}; // struct AttributeArray::Accessor + + +//////////////////////////////////////// + + +namespace attribute_traits +{ + template struct TruncateTrait { }; + template <> struct TruncateTrait { using Type = half; }; + template <> struct TruncateTrait { using Type = short; }; + + template struct TruncateTrait> { + using Type = math::Vec3::Type>; + }; + + template struct UIntTypeTrait { }; + template struct UIntTypeTrait { using Type = uint8_t; }; + template struct UIntTypeTrait { using Type = uint16_t; }; + template struct UIntTypeTrait> { + using Type = math::Vec3; + }; + template struct UIntTypeTrait> { + using Type = math::Vec3; + }; +} + + +//////////////////////////////////////// + + +// Attribute codec schemes + +struct UnknownCodec { }; + + +struct NullCodec +{ + template + struct Storage { using Type = T; }; + + template static void decode(const ValueType&, ValueType&); + template static void encode(const ValueType&, ValueType&); + static const char* name() { return "null"; } +}; + + +struct TruncateCodec +{ + template + struct Storage { using Type = typename attribute_traits::TruncateTrait::Type; }; + + template static void decode(const StorageType&, ValueType&); + template static void encode(const ValueType&, StorageType&); + static const char* name() { return "trnc"; } +}; + + +// Fixed-point codec range for voxel-space positions [-0.5,0.5] +struct PositionRange +{ + static const char* name() { return "fxpt"; } + template static ValueType encode(const ValueType& value) { return value + ValueType(0.5); } + template static ValueType decode(const ValueType& value) { return value - ValueType(0.5); } +}; + + +// Fixed-point codec range for unsigned values in the unit range [0.0,1.0] +struct UnitRange +{ + static const char* name() { return "ufxpt"; } + template static ValueType encode(const ValueType& value) { return value; } + template static ValueType decode(const ValueType& value) { return value; } +}; + + +template +struct FixedPointCodec +{ + template + struct Storage { using Type = typename attribute_traits::UIntTypeTrait::Type; }; + + template static void decode(const StorageType&, ValueType&); + template static void encode(const ValueType&, StorageType&); + + static const char* name() { + static const std::string Name = std::string(Range::name()) + (OneByte ? "8" : "16"); + return Name.c_str(); + } +}; + + +struct UnitVecCodec +{ + using StorageType = uint16_t; + + template + struct Storage { using Type = StorageType; }; + + template static void decode(const StorageType&, math::Vec3&); + template static void encode(const math::Vec3&, StorageType&); + static const char* name() { return "uvec"; } +}; + + +//////////////////////////////////////// + + +/// Typed class for storing attribute data + +template +#if OPENVDB_ABI_VERSION_NUMBER >= 6 // for ABI=6, class is final to allow for de-virtualization +class TypedAttributeArray final: public AttributeArray +#else +class TypedAttributeArray: public AttributeArray +#endif +{ +public: + using Ptr = std::shared_ptr; + using ConstPtr = std::shared_ptr; + + using ValueType = ValueType_; + using Codec = Codec_; + using StorageType = typename Codec::template Storage::Type; + + ////////// + + /// Default constructor, always constructs a uniform attribute. + explicit TypedAttributeArray(Index n = 1, Index strideOrTotalSize = 1, bool constantStride = true, + const ValueType& uniformValue = zeroVal()); +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// Deep copy constructor. + /// @note This method is thread-safe (as of ABI=7) for concurrently reading from the + /// source attribute array while being deep-copied. Specifically, this means that the + /// attribute array being deep-copied can be out-of-core and safely loaded in one thread + /// while being copied using this copy-constructor in another thread. + /// It is not thread-safe for write. + TypedAttributeArray(const TypedAttributeArray&); + /// Deep copy constructor. + /// @deprecated Use copy-constructor without unused bool parameter + OPENVDB_DEPRECATED TypedAttributeArray(const TypedAttributeArray&, bool /*unused*/); +#else + /// Deep copy constructor. + /// @note This method is not thread-safe for reading or writing, use + /// TypedAttributeArray::copy() to ensure thread-safety when reading concurrently. + TypedAttributeArray(const TypedAttributeArray&, bool uncompress = false); +#endif + /// Deep copy assignment operator. + /// @note this operator is thread-safe. + TypedAttributeArray& operator=(const TypedAttributeArray&); + /// Move constructor disabled. + TypedAttributeArray(TypedAttributeArray&&) = delete; + /// Move assignment operator disabled. + TypedAttributeArray& operator=(TypedAttributeArray&&) = delete; + + ~TypedAttributeArray() override { this->deallocate(); } + + /// Return a copy of this attribute. + /// @note This method is thread-safe. + AttributeArray::Ptr copy() const override; + + /// Return an uncompressed copy of this attribute (will just return a copy if not compressed). + /// @note This method is thread-safe. + OPENVDB_DEPRECATED AttributeArray::Ptr copyUncompressed() const override; + + /// Return a new attribute array of the given length @a n and @a stride with uniform value zero. + static Ptr create(Index n, Index strideOrTotalSize = 1, bool constantStride = true); + + /// Cast an AttributeArray to TypedAttributeArray + static TypedAttributeArray& cast(AttributeArray& attributeArray); + + /// Cast an AttributeArray to TypedAttributeArray + static const TypedAttributeArray& cast(const AttributeArray& attributeArray); + + /// Return the name of this attribute's type (includes codec) + static const NamePair& attributeType(); + /// Return the name of this attribute's type. + const NamePair& type() const override { return attributeType(); } + + /// Return @c true if this attribute type is registered. + static bool isRegistered(); + /// Register this attribute type along with a factory function. + static void registerType(); + /// Remove this attribute type from the registry. + static void unregisterType(); + + /// Return the number of elements in this array. + Index size() const override { return mSize; } + + /// Return the stride of this array. + /// @note A return value of zero means a variable stride + Index stride() const override { return hasConstantStride() ? mStrideOrTotalSize : 0; } + + /// Return the size of the data in this array. + Index dataSize() const override { + return hasConstantStride() ? mSize * mStrideOrTotalSize : mStrideOrTotalSize; + } + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Return the name of the value type of a single element in this array (e.g., "float" or "vec3d"). + Name valueType() const override { return typeNameAsString(); } + + /// Return the name of the codec used by this array (e.g., "trnc" or "fxpt"). + Name codecType() const override { return Codec::name(); } + + /// Return the size in bytes of the value type of a single element in this array. + Index valueTypeSize() const override { return sizeof(ValueType); } + + /// Return the size in bytes of the storage type of a single element of this array. + /// @note If the Codec is a NullCodec, valueSize() == storageSize() + Index storageTypeSize() const override { return sizeof(StorageType); } + + /// Return @c true if the value type is floating point + bool valueTypeIsFloatingPoint() const override; + + /// Return @c true if the value type is a class (ie vector, matrix or quaternion return true) + bool valueTypeIsClass() const override; + + /// Return @c true if the value type is a vector + bool valueTypeIsVector() const override; + + /// Return @c true if the value type is a quaternion + bool valueTypeIsQuaternion() const override; + + /// Return @c true if the value type is a matrix + bool valueTypeIsMatrix() const override; +#endif + + /// Return the number of bytes of memory used by this attribute. + size_t memUsage() const override; + + /// Return the value at index @a n (assumes uncompressed and in-core) + ValueType getUnsafe(Index n) const; + /// Return the value at index @a n + ValueType get(Index n) const; + /// Return the @a value at index @a n (assumes uncompressed and in-core) + template void getUnsafe(Index n, T& value) const; + /// Return the @a value at index @a n + template void get(Index n, T& value) const; + + /// Non-member equivalent to getUnsafe() that static_casts array to this TypedAttributeArray + /// (assumes uncompressed and in-core) + static ValueType getUnsafe(const AttributeArray* array, const Index n); + + /// Set @a value at the given index @a n (assumes uncompressed and in-core) + void setUnsafe(Index n, const ValueType& value); + /// Set @a value at the given index @a n + void set(Index n, const ValueType& value); + /// Set @a value at the given index @a n (assumes uncompressed and in-core) + template void setUnsafe(Index n, const T& value); + /// Set @a value at the given index @a n + template void set(Index n, const T& value); + + /// Non-member equivalent to setUnsafe() that static_casts array to this TypedAttributeArray + /// (assumes uncompressed and in-core) + static void setUnsafe(AttributeArray* array, const Index n, const ValueType& value); + + /// Set value at given index @a n from @a sourceIndex of another @a sourceArray +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + OPENVDB_DEPRECATED +#endif + void set(const Index n, const AttributeArray& sourceArray, const Index sourceIndex) override; + + /// Return @c true if this array is stored as a single uniform value. + bool isUniform() const override { return mIsUniform; } + /// @brief Replace the single value storage with an array of length size(). + /// @note Non-uniform attributes are unchanged. + /// @param fill toggle to initialize the array elements with the pre-expanded value. + void expand(bool fill = true) override; + /// Replace the existing array with a uniform zero value. + void collapse() override; + /// Compact the existing array to become uniform if all values are identical + bool compact() override; + + /// Replace the existing array with the given uniform value. + void collapse(const ValueType& uniformValue); + /// @brief Fill the existing array with the given value. + /// @note Identical to collapse() except a non-uniform array will not become uniform. + void fill(const ValueType& value); + + /// Non-member equivalent to collapse() that static_casts array to this TypedAttributeArray + static void collapse(AttributeArray* array, const ValueType& value); + /// Non-member equivalent to fill() that static_casts array to this TypedAttributeArray + static void fill(AttributeArray* array, const ValueType& value); + + /// Compress the attribute array. + OPENVDB_DEPRECATED bool compress() override; + /// Uncompress the attribute array. + OPENVDB_DEPRECATED bool decompress() override; + + /// Read attribute data from a stream. + void read(std::istream&) override; + /// Write attribute data to a stream. + /// @param os the output stream + /// @param outputTransient if true, write out transient attributes + void write(std::ostream& os, bool outputTransient) const override; + /// Write attribute data to a stream, don't write transient attributes. + void write(std::ostream&) const override; + + /// Read attribute metadata from a stream. + void readMetadata(std::istream&) override; + /// Write attribute metadata to a stream. + /// @param os the output stream + /// @param outputTransient if true, write out transient attributes + /// @param paged if true, data is written out in pages + void writeMetadata(std::ostream& os, bool outputTransient, bool paged) const override; + + /// Read attribute buffers from a stream. + void readBuffers(std::istream&) override; + /// Write attribute buffers to a stream. + /// @param os the output stream + /// @param outputTransient if true, write out transient attributes + void writeBuffers(std::ostream& os, bool outputTransient) const override; + + /// Read attribute buffers from a paged stream. + void readPagedBuffers(compression::PagedInputStream&) override; + /// Write attribute buffers to a paged stream. + /// @param os the output stream + /// @param outputTransient if true, write out transient attributes + void writePagedBuffers(compression::PagedOutputStream& os, bool outputTransient) const override; + + /// Return @c true if this buffer's values have not yet been read from disk. + inline bool isOutOfCore() const; + + /// Ensures all data is in-core + void loadData() const override; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Return @c true if all data has been loaded + bool isDataLoaded() const override; +#endif + +protected: + AccessorBasePtr getAccessor() const override; + + /// Return the raw data buffer + inline StorageType* data() { assert(validData()); return mData.get(); } + inline const StorageType* data() const { assert(validData()); return mData.get(); } + + /// Verify that data is not out-of-core or in a partially-read state + inline bool validData() const { return !(isOutOfCore() || (flags() & PARTIALREAD)); } + +private: + friend class ::TestAttributeArray; + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + TypedAttributeArray(const TypedAttributeArray&, const tbb::spin_mutex::scoped_lock&); +#endif + + /// Load data from memory-mapped file. + inline void doLoad() const; + /// Load data from memory-mapped file (unsafe as this function is not protected by a mutex). + /// @param compression if true, loading previously compressed data will re-compressed it + inline void doLoadUnsafe(const bool compression = true) const; + /// Compress in-core data assuming mutex is locked + inline bool compressUnsafe(); + + /// Toggle out-of-core state + inline void setOutOfCore(const bool); + + /// Compare the this data to another attribute array. Used by the base class comparison operator + bool isEqual(const AttributeArray& other) const override; + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + /// Virtual function to retrieve the data buffer from the derived class cast to a char byte array + char* dataAsByteArray() override; + const char* dataAsByteArray() const override; +#endif + + size_t arrayMemUsage() const; + void allocate(); + void deallocate(); + + /// Helper function for use with registerType() + static AttributeArray::Ptr factory(Index n, Index strideOrTotalSize, bool constantStride) { + return TypedAttributeArray::create(n, strideOrTotalSize, constantStride); + } + + static std::unique_ptr sTypeName; + std::unique_ptr mData; + Index mSize; + Index mStrideOrTotalSize; +#if OPENVDB_ABI_VERSION_NUMBER < 6 // as of ABI=6, this data lives in the base class to reduce memory + bool mIsUniform = true; + mutable tbb::spin_mutex mMutex; +#endif +}; // class TypedAttributeArray + + +//////////////////////////////////////// + + +/// AttributeHandles provide access to specific TypedAttributeArray methods without needing +/// to know the compression codec, however these methods also incur the cost of a function pointer +template +class AttributeHandle +{ +public: + using Handle = AttributeHandle; + using Ptr = std::shared_ptr; + using UniquePtr = std::unique_ptr; + +protected: + using GetterPtr = ValueType (*)(const AttributeArray* array, const Index n); + using SetterPtr = void (*)(AttributeArray* array, const Index n, const ValueType& value); + using ValuePtr = void (*)(AttributeArray* array, const ValueType& value); + +public: + static Ptr create(const AttributeArray& array, const bool collapseOnDestruction = true); + + AttributeHandle(const AttributeArray& array, const bool collapseOnDestruction = true); + + AttributeHandle(const AttributeHandle&) = default; + AttributeHandle& operator=(const AttributeHandle&) = default; + + virtual ~AttributeHandle(); + + Index stride() const { return mStrideOrTotalSize; } + Index size() const { return mSize; } + + bool isUniform() const; + bool hasConstantStride() const; + + ValueType get(Index n, Index m = 0) const; + + const AttributeArray& array() const; + +protected: + Index index(Index n, Index m) const; + + const AttributeArray* mArray; + + GetterPtr mGetter; + SetterPtr mSetter; + ValuePtr mCollapser; + ValuePtr mFiller; + +private: + friend class ::TestAttributeArray; + + template + typename std::enable_if::type compatibleType() const; + + template + typename std::enable_if::type compatibleType() const; + + template + typename std::enable_if::type get(Index index) const; + + template + typename std::enable_if::type get(Index index) const; + + // local copy of AttributeArray (to preserve compression) + AttributeArray::Ptr mLocalArray; + + Index mStrideOrTotalSize; + Index mSize; + bool mCollapseOnDestruction; +}; // class AttributeHandle + + +//////////////////////////////////////// + + +/// Write-able version of AttributeHandle +template +class AttributeWriteHandle : public AttributeHandle +{ +public: + using Handle = AttributeWriteHandle; + using Ptr = std::shared_ptr; + using ScopedPtr = std::unique_ptr; + + static Ptr create(AttributeArray& array, const bool expand = true); + + AttributeWriteHandle(AttributeArray& array, const bool expand = true); + + virtual ~AttributeWriteHandle() = default; + + /// @brief If this array is uniform, replace it with an array of length size(). + /// @param fill if true, assign the uniform value to each element of the array. + void expand(bool fill = true); + + /// Replace the existing array with a uniform value (zero if none provided). + void collapse(); + void collapse(const ValueType& uniformValue); + + /// Compact the existing array to become uniform if all values are identical + bool compact(); + + /// @brief Fill the existing array with the given value. + /// @note Identical to collapse() except a non-uniform array will not become uniform. + void fill(const ValueType& value); + + void set(Index n, const ValueType& value); + void set(Index n, Index m, const ValueType& value); + + AttributeArray& array(); + +private: + friend class ::TestAttributeArray; + + template + typename std::enable_if::type set(Index index, const ValueType& value) const; + + template + typename std::enable_if::type set(Index index, const ValueType& value) const; +}; // class AttributeWriteHandle + + +//////////////////////////////////////// + + +// Attribute codec implementation + + +template +inline void +NullCodec::decode(const ValueType& data, ValueType& val) +{ + val = data; +} + + +template +inline void +NullCodec::encode(const ValueType& val, ValueType& data) +{ + data = val; +} + + +template +inline void +TruncateCodec::decode(const StorageType& data, ValueType& val) +{ + val = static_cast(data); +} + + +template +inline void +TruncateCodec::encode(const ValueType& val, StorageType& data) +{ + data = static_cast(val); +} + + +template +template +inline void +FixedPointCodec::decode(const StorageType& data, ValueType& val) +{ + val = fixedPointToFloatingPoint(data); + + // shift value range to be -0.5 => 0.5 (as this is most commonly used for position) + + val = Range::template decode(val); +} + + +template +template +inline void +FixedPointCodec::encode(const ValueType& val, StorageType& data) +{ + // shift value range to be -0.5 => 0.5 (as this is most commonly used for position) + + const ValueType newVal = Range::template encode(val); + + data = floatingPointToFixedPoint(newVal); +} + + +template +inline void +UnitVecCodec::decode(const StorageType& data, math::Vec3& val) +{ + val = math::QuantizedUnitVec::unpack(data); +} + + +template +inline void +UnitVecCodec::encode(const math::Vec3& val, StorageType& data) +{ + data = math::QuantizedUnitVec::pack(val); +} + + +//////////////////////////////////////// + +// AttributeArray implementation + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + +template +void AttributeArray::doCopyValues(const AttributeArray& sourceArray, const IterT& iter, + bool rangeChecking/*=true*/) +{ + // ensure both arrays have float-float or integer-integer value types + assert(sourceArray.valueTypeIsFloatingPoint() == this->valueTypeIsFloatingPoint()); + // ensure both arrays have been loaded from disk (if delay-loaded) + assert(sourceArray.isDataLoaded() && this->isDataLoaded()); + // ensure storage size * stride matches on both arrays + assert(this->storageTypeSize()*this->stride() == + sourceArray.storageTypeSize()*sourceArray.stride()); + + const size_t bytes(sourceArray.storageTypeSize()*sourceArray.stride()); + const char* const sourceBuffer = sourceArray.dataAsByteArray(); + char* const targetBuffer = this->dataAsByteArray(); + assert(sourceBuffer && targetBuffer); + + if (rangeChecking && this->isUniform()) { + OPENVDB_THROW(IndexError, "Cannot copy array data as target array is uniform."); + } + + const bool sourceIsUniform = sourceArray.isUniform(); + + const Index sourceDataSize = rangeChecking ? sourceArray.dataSize() : 0; + const Index targetDataSize = rangeChecking ? this->dataSize() : 0; + + for (IterT it(iter); it; ++it) { + const Index sourceIndex = sourceIsUniform ? 0 : it.sourceIndex(); + const Index targetIndex = it.targetIndex(); + + if (rangeChecking) { + if (sourceIndex >= sourceDataSize) { + OPENVDB_THROW(IndexError, + "Cannot copy array data as source index exceeds size of source array."); + } + if (targetIndex >= targetDataSize) { + OPENVDB_THROW(IndexError, + "Cannot copy array data as target index exceeds size of target array."); + } + } else { + // range-checking asserts + assert(sourceIndex < sourceArray.dataSize()); + assert(targetIndex < this->dataSize()); + if (this->isUniform()) assert(targetIndex == Index(0)); + } + + const size_t targetOffset(targetIndex * bytes); + const size_t sourceOffset(sourceIndex * bytes); + + std::memcpy(targetBuffer + targetOffset, sourceBuffer + sourceOffset, bytes); + } +} + +template +void AttributeArray::copyValuesUnsafe(const AttributeArray& sourceArray, const IterT& iter) +{ + this->doCopyValues(sourceArray, iter, /*range-checking=*/false); +} + +template +void AttributeArray::copyValues(const AttributeArray& sourceArray, const IterT& iter, + bool compact/* = true*/) +{ + const Index bytes = sourceArray.storageTypeSize(); + if (bytes != this->storageTypeSize()) { + OPENVDB_THROW(TypeError, "Cannot copy array data due to mis-match in storage type sizes."); + } + + // ensure both arrays have been loaded from disk + sourceArray.loadData(); + this->loadData(); + + // if the target array is uniform, expand it first + this->expand(); + + // TODO: Acquire mutex locks for source and target arrays to ensure that + // value copying is always thread-safe. Note that the unsafe method will be + // faster, but can only be used if neither the source or target arrays are + // modified during copying. Note that this will require a new private + // virtual method with ABI=7 to access the mutex from the derived class. + + this->doCopyValues(sourceArray, iter, true); + + // attempt to compact target array + if (compact) { + this->compact(); + } +} +#endif + + +//////////////////////////////////////// + +// TypedAttributeArray implementation + +template +std::unique_ptr TypedAttributeArray::sTypeName; + + +template +TypedAttributeArray::TypedAttributeArray( + Index n, Index strideOrTotalSize, bool constantStride, const ValueType& uniformValue) + : AttributeArray() + , mData(new StorageType[1]) + , mSize(n) + , mStrideOrTotalSize(strideOrTotalSize) +{ + if (constantStride) { + this->setConstantStride(true); + if (strideOrTotalSize == 0) { + OPENVDB_THROW(ValueError, "Creating a TypedAttributeArray with a constant stride requires that " \ + "stride to be at least one.") + } + } + else { + this->setConstantStride(false); + if (mStrideOrTotalSize < n) { + OPENVDB_THROW(ValueError, "Creating a TypedAttributeArray with a non-constant stride must have " \ + "a total size of at least the number of elements in the array.") + } + } + mSize = std::max(Index(1), mSize); + mStrideOrTotalSize = std::max(Index(1), mStrideOrTotalSize); + Codec::encode(uniformValue, this->data()[0]); +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +template +TypedAttributeArray::TypedAttributeArray(const TypedAttributeArray& rhs) + : TypedAttributeArray(rhs, tbb::spin_mutex::scoped_lock(rhs.mMutex)) +{ +} + + +template +TypedAttributeArray::TypedAttributeArray(const TypedAttributeArray& rhs, + const tbb::spin_mutex::scoped_lock& lock) + : AttributeArray(rhs, lock) +#else +template +TypedAttributeArray::TypedAttributeArray(const TypedAttributeArray& rhs, bool) + : AttributeArray(rhs) +#endif + , mSize(rhs.mSize) + , mStrideOrTotalSize(rhs.mStrideOrTotalSize) +#if OPENVDB_ABI_VERSION_NUMBER < 6 + , mIsUniform(rhs.mIsUniform) +#endif +{ + if (this->validData()) { + this->allocate(); + std::memcpy(this->data(), rhs.data(), this->arrayMemUsage()); + } +} + + +template +TypedAttributeArray& +TypedAttributeArray::operator=(const TypedAttributeArray& rhs) +{ + if (&rhs != this) { + // lock both the source and target arrays to ensure thread-safety + tbb::spin_mutex::scoped_lock lock(mMutex); + tbb::spin_mutex::scoped_lock rhsLock(rhs.mMutex); + + this->deallocate(); + + mFlags = rhs.mFlags; + mUsePagedRead = rhs.mUsePagedRead; + mSize = rhs.mSize; + mStrideOrTotalSize = rhs.mStrideOrTotalSize; + mIsUniform = rhs.mIsUniform; + + if (this->validData()) { + this->allocate(); + std::memcpy(this->newDataAsByteArray(), rhs.newDataAsByteArray(), this->arrayMemUsage()); + } + } +} + + +template +inline const NamePair& +TypedAttributeArray::attributeType() +{ + static std::once_flag once; + std::call_once(once, []() + { + sTypeName.reset(new NamePair(typeNameAsString(), Codec::name())); + }); + return *sTypeName; +} + + +template +inline bool +TypedAttributeArray::isRegistered() +{ + return AttributeArray::isRegistered(TypedAttributeArray::attributeType()); +} + + +template +inline void +TypedAttributeArray::registerType() +{ + AttributeArray::registerType(TypedAttributeArray::attributeType(), TypedAttributeArray::factory); +} + + +template +inline void +TypedAttributeArray::unregisterType() +{ + AttributeArray::unregisterType(TypedAttributeArray::attributeType()); +} + + +template +inline typename TypedAttributeArray::Ptr +TypedAttributeArray::create(Index n, Index stride, bool constantStride) +{ + return Ptr(new TypedAttributeArray(n, stride, constantStride)); +} + +template +inline TypedAttributeArray& +TypedAttributeArray::cast(AttributeArray& attributeArray) +{ + if (!attributeArray.isType()) { + OPENVDB_THROW(TypeError, "Invalid Attribute Type"); + } + return static_cast(attributeArray); +} + +template +inline const TypedAttributeArray& +TypedAttributeArray::cast(const AttributeArray& attributeArray) +{ + if (!attributeArray.isType()) { + OPENVDB_THROW(TypeError, "Invalid Attribute Type"); + } + return static_cast(attributeArray); +} + +template +AttributeArray::Ptr +TypedAttributeArray::copy() const +{ +#if OPENVDB_ABI_VERSION_NUMBER < 7 + tbb::spin_mutex::scoped_lock lock(mMutex); +#endif + return AttributeArray::Ptr(new TypedAttributeArray(*this)); +} + + +template +AttributeArray::Ptr +TypedAttributeArray::copyUncompressed() const +{ + return this->copy(); +} + + +template +size_t +TypedAttributeArray::arrayMemUsage() const +{ + if (this->isOutOfCore()) return 0; + + return (mIsUniform ? 1 : this->dataSize()) * sizeof(StorageType); +} + + +template +void +TypedAttributeArray::allocate() +{ + assert(!mData); + if (mIsUniform) { + mData.reset(new StorageType[1]); + } + else { + const size_t size(this->dataSize()); + assert(size > 0); + mData.reset(new StorageType[size]); + } +} + + +template +void +TypedAttributeArray::deallocate() +{ + // detach from file if delay-loaded + if (this->isOutOfCore()) { + this->setOutOfCore(false); + this->mPageHandle.reset(); + } + if (mData) mData.reset(); +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 +template +bool +TypedAttributeArray::valueTypeIsFloatingPoint() const +{ + // TODO: Update to use Traits that correctly handle matrices and quaternions. + + if (std::is_same::value || + std::is_same::value || + std::is_same::value || + std::is_same::value || + std::is_same::value || + std::is_same::value) return true; + + using ElementT = typename VecTraits::ElementType; + + // half is not defined as float point as expected, so explicitly handle it + return std::is_floating_point::value || std::is_same::value; +} + + +template +bool +TypedAttributeArray::valueTypeIsClass() const +{ + // half is not defined as a non-class type as expected, so explicitly exclude it + return std::is_class::value && !std::is_same::value; +} + + +template +bool +TypedAttributeArray::valueTypeIsVector() const +{ + return VecTraits::IsVec; +} + + +template +bool +TypedAttributeArray::valueTypeIsQuaternion() const +{ + // TODO: improve performance by making this a compile-time check using type traits + return !this->valueType().compare(0, 4, "quat"); +} + + +template +bool +TypedAttributeArray::valueTypeIsMatrix() const +{ + // TODO: improve performance by making this a compile-time check using type traits + return !this->valueType().compare(0, 3, "mat"); +} +#endif + + +template +size_t +TypedAttributeArray::memUsage() const +{ + return sizeof(*this) + (bool(mData) ? this->arrayMemUsage() : 0); +} + + +template +typename TypedAttributeArray::ValueType +TypedAttributeArray::getUnsafe(Index n) const +{ + assert(n < this->dataSize()); + + ValueType val; + Codec::decode(/*in=*/this->data()[mIsUniform ? 0 : n], /*out=*/val); + return val; +} + + +template +typename TypedAttributeArray::ValueType +TypedAttributeArray::get(Index n) const +{ + if (n >= this->dataSize()) OPENVDB_THROW(IndexError, "Out-of-range access."); + if (this->isOutOfCore()) this->doLoad(); + + return this->getUnsafe(n); +} + + +template +template +void +TypedAttributeArray::getUnsafe(Index n, T& val) const +{ + val = static_cast(this->getUnsafe(n)); +} + + +template +template +void +TypedAttributeArray::get(Index n, T& val) const +{ + val = static_cast(this->get(n)); +} + + +template +typename TypedAttributeArray::ValueType +TypedAttributeArray::getUnsafe(const AttributeArray* array, const Index n) +{ + return static_cast*>(array)->getUnsafe(n); +} + + +template +void +TypedAttributeArray::setUnsafe(Index n, const ValueType& val) +{ + assert(n < this->dataSize()); + assert(!this->isOutOfCore()); + assert(!this->isUniform()); + + // this unsafe method assumes the data is not uniform, however if it is, this redirects the index + // to zero, which is marginally less efficient but ensures not writing to an illegal address + + Codec::encode(/*in=*/val, /*out=*/this->data()[mIsUniform ? 0 : n]); +} + + +template +void +TypedAttributeArray::set(Index n, const ValueType& val) +{ + if (n >= this->dataSize()) OPENVDB_THROW(IndexError, "Out-of-range access."); + if (this->isOutOfCore()) this->doLoad(); + if (this->isUniform()) this->expand(); + + this->setUnsafe(n, val); +} + + +template +template +void +TypedAttributeArray::setUnsafe(Index n, const T& val) +{ + this->setUnsafe(n, static_cast(val)); +} + + +template +template +void +TypedAttributeArray::set(Index n, const T& val) +{ + this->set(n, static_cast(val)); +} + + +template +void +TypedAttributeArray::setUnsafe(AttributeArray* array, const Index n, const ValueType& value) +{ + static_cast*>(array)->setUnsafe(n, value); +} + + +template +void +TypedAttributeArray::set(Index n, const AttributeArray& sourceArray, const Index sourceIndex) +{ + const TypedAttributeArray& sourceTypedArray = static_cast(sourceArray); + + ValueType sourceValue; + sourceTypedArray.get(sourceIndex, sourceValue); + + this->set(n, sourceValue); +} + + +template +void +TypedAttributeArray::expand(bool fill) +{ + if (!mIsUniform) return; + + const StorageType val = this->data()[0]; + + { + tbb::spin_mutex::scoped_lock lock(mMutex); + this->deallocate(); + mIsUniform = false; + this->allocate(); + } + + if (fill) { + for (Index i = 0; i < this->dataSize(); ++i) this->data()[i] = val; + } +} + + +template +bool +TypedAttributeArray::compact() +{ + if (mIsUniform) return true; + + // compaction is not possible if any values are different + const ValueType_ val = this->get(0); + for (Index i = 1; i < this->dataSize(); i++) { + if (!math::isExactlyEqual(this->get(i), val)) return false; + } + + this->collapse(this->get(0)); + return true; +} + + +template +void +TypedAttributeArray::collapse() +{ + this->collapse(zeroVal()); +} + + +template +void +TypedAttributeArray::collapse(const ValueType& uniformValue) +{ + if (!mIsUniform) { + tbb::spin_mutex::scoped_lock lock(mMutex); + this->deallocate(); + mIsUniform = true; + this->allocate(); + } + Codec::encode(uniformValue, this->data()[0]); +} + + +template +void +TypedAttributeArray::collapse(AttributeArray* array, const ValueType& value) +{ + static_cast*>(array)->collapse(value); +} + + +template +void +TypedAttributeArray::fill(const ValueType& value) +{ + if (this->isOutOfCore()) { + tbb::spin_mutex::scoped_lock lock(mMutex); + this->deallocate(); + this->allocate(); + } + + const Index size = mIsUniform ? 1 : this->dataSize(); + for (Index i = 0; i < size; ++i) { + Codec::encode(value, this->data()[i]); + } +} + + +template +void +TypedAttributeArray::fill(AttributeArray* array, const ValueType& value) +{ + static_cast*>(array)->fill(value); +} + + +template +inline bool +TypedAttributeArray::compress() +{ + return false; +} + + +template +inline bool +TypedAttributeArray::compressUnsafe() +{ + return false; +} + + +template +inline bool +TypedAttributeArray::decompress() +{ + return false; +} + + +template +bool +TypedAttributeArray::isOutOfCore() const +{ +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + return mOutOfCore; +#else + return (mFlags & OUTOFCORE); +#endif +} + + +template +void +TypedAttributeArray::setOutOfCore(const bool b) +{ +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + mOutOfCore = b; +#else + if (b) mFlags = static_cast(mFlags | OUTOFCORE); + else mFlags = static_cast(mFlags & ~OUTOFCORE); +#endif +} + + +template +void +TypedAttributeArray::doLoad() const +{ + if (!(this->isOutOfCore())) return; + + TypedAttributeArray* self = + const_cast*>(this); + + // This lock will be contended at most once, after which this buffer + // will no longer be out-of-core. + tbb::spin_mutex::scoped_lock lock(self->mMutex); + this->doLoadUnsafe(); +} + + +template +void +TypedAttributeArray::loadData() const +{ + this->doLoad(); +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 +template +bool +TypedAttributeArray::isDataLoaded() const +{ + return !this->isOutOfCore(); +} +#endif + + +template +void +TypedAttributeArray::read(std::istream& is) +{ + this->readMetadata(is); + this->readBuffers(is); +} + + +template +void +TypedAttributeArray::readMetadata(std::istream& is) +{ + // read data + + Index64 bytes = Index64(0); + is.read(reinterpret_cast(&bytes), sizeof(Index64)); + bytes = bytes - /*flags*/sizeof(Int16) - /*size*/sizeof(Index); + + uint8_t flags = uint8_t(0); + is.read(reinterpret_cast(&flags), sizeof(uint8_t)); + mFlags = flags; + + uint8_t serializationFlags = uint8_t(0); + is.read(reinterpret_cast(&serializationFlags), sizeof(uint8_t)); + + Index size = Index(0); + is.read(reinterpret_cast(&size), sizeof(Index)); + mSize = size; + + // warn if an unknown flag has been set + if (mFlags >= 0x20) { + OPENVDB_LOG_WARN("Unknown attribute flags for VDB file format."); + } + // error if an unknown serialization flag has been set, + // as this will adjust the layout of the data and corrupt the ability to read + if (serializationFlags >= 0x10) { + OPENVDB_THROW(IoError, "Unknown attribute serialization flags for VDB file format."); + } + + // set uniform, compressed and page read state + + mIsUniform = serializationFlags & WRITEUNIFORM; + mUsePagedRead = serializationFlags & WRITEPAGED; + mCompressedBytes = bytes; + mFlags |= PARTIALREAD; // mark data as having been partially read + + // read strided value (set to 1 if array is not strided) + + if (serializationFlags & WRITESTRIDED) { + Index stride = Index(0); + is.read(reinterpret_cast(&stride), sizeof(Index)); + mStrideOrTotalSize = stride; + } + else { + mStrideOrTotalSize = 1; + } +} + + +template +void +TypedAttributeArray::readBuffers(std::istream& is) +{ + if (mUsePagedRead) { + // use readBuffers(PagedInputStream&) for paged buffers + OPENVDB_THROW(IoError, "Cannot read paged AttributeArray buffers."); + } + + tbb::spin_mutex::scoped_lock lock(mMutex); + + this->deallocate(); + + uint8_t bloscCompressed(0); + if (!mIsUniform) is.read(reinterpret_cast(&bloscCompressed), sizeof(uint8_t)); + + assert(mFlags & PARTIALREAD); + std::unique_ptr buffer(new char[mCompressedBytes]); + is.read(buffer.get(), mCompressedBytes); + mCompressedBytes = 0; + mFlags = static_cast(mFlags & ~PARTIALREAD); // mark data read as having completed + + // compressed on-disk + + if (bloscCompressed == uint8_t(1)) { + + // decompress buffer + + const size_t inBytes = this->dataSize() * sizeof(StorageType); + std::unique_ptr newBuffer = compression::bloscDecompress(buffer.get(), inBytes); + if (newBuffer) buffer.reset(newBuffer.release()); + } + + // set data to buffer + + mData.reset(reinterpret_cast(buffer.release())); +} + + +template +void +TypedAttributeArray::readPagedBuffers(compression::PagedInputStream& is) +{ + if (!mUsePagedRead) { + if (!is.sizeOnly()) this->readBuffers(is.getInputStream()); + return; + } + + // If this array is being read from a memory-mapped file, delay loading of its data + // until the data is actually accessed. + io::MappedFile::Ptr mappedFile = io::getMappedFilePtr(is.getInputStream()); + const bool delayLoad = (mappedFile.get() != nullptr); + + if (is.sizeOnly()) + { + size_t compressedBytes(mCompressedBytes); + mCompressedBytes = 0; // if not set to zero, mPageHandle will attempt to destroy invalid memory + mFlags = static_cast(mFlags & ~PARTIALREAD); // mark data read as having completed + assert(!mPageHandle); + mPageHandle = is.createHandle(compressedBytes); + return; + } + + assert(mPageHandle); + + tbb::spin_mutex::scoped_lock lock(mMutex); + + this->deallocate(); + + this->setOutOfCore(delayLoad); + is.read(mPageHandle, std::streamsize(mPageHandle->size()), delayLoad); + + if (!delayLoad) { + std::unique_ptr buffer = mPageHandle->read(); + mData.reset(reinterpret_cast(buffer.release())); + } + + // clear page state + + mUsePagedRead = 0; +} + + +template +void +TypedAttributeArray::write(std::ostream& os) const +{ + this->write(os, /*outputTransient=*/false); +} + + +template +void +TypedAttributeArray::write(std::ostream& os, bool outputTransient) const +{ + this->writeMetadata(os, outputTransient, /*paged=*/false); + this->writeBuffers(os, outputTransient); +} + + +template +void +TypedAttributeArray::writeMetadata(std::ostream& os, bool outputTransient, bool paged) const +{ + if (!outputTransient && this->isTransient()) return; + + if (mFlags & PARTIALREAD) { + OPENVDB_THROW(IoError, "Cannot write out a partially-read AttributeArray."); + } + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + uint8_t flags(mFlags); +#else + uint8_t flags(mFlags & uint8_t(~OUTOFCORE)); +#endif + uint8_t serializationFlags(0); + Index size(mSize); + Index stride(mStrideOrTotalSize); + bool strideOfOne(this->stride() == 1); + + bool bloscCompression = io::getDataCompression(os) & io::COMPRESS_BLOSC; + + // any compressed data needs to be loaded if out-of-core + if (bloscCompression) this->doLoad(); + + size_t compressedBytes = 0; + + if (!strideOfOne) + { + serializationFlags |= WRITESTRIDED; + } + + if (mIsUniform) + { + serializationFlags |= WRITEUNIFORM; + if (bloscCompression && paged) serializationFlags |= WRITEPAGED; + } + else if (bloscCompression) + { + if (paged) serializationFlags |= WRITEPAGED; + else { + const char* charBuffer = reinterpret_cast(this->data()); + const size_t inBytes = this->arrayMemUsage(); + compressedBytes = compression::bloscCompressedSize(charBuffer, inBytes); + } + } + + Index64 bytes = /*flags*/ sizeof(Int16) + /*size*/ sizeof(Index); + + bytes += (compressedBytes > 0) ? compressedBytes : this->arrayMemUsage(); + + // write data + + os.write(reinterpret_cast(&bytes), sizeof(Index64)); + os.write(reinterpret_cast(&flags), sizeof(uint8_t)); + os.write(reinterpret_cast(&serializationFlags), sizeof(uint8_t)); + os.write(reinterpret_cast(&size), sizeof(Index)); + + // write strided + if (!strideOfOne) os.write(reinterpret_cast(&stride), sizeof(Index)); +} + + +template +void +TypedAttributeArray::writeBuffers(std::ostream& os, bool outputTransient) const +{ + if (!outputTransient && this->isTransient()) return; + + if (mFlags & PARTIALREAD) { + OPENVDB_THROW(IoError, "Cannot write out a partially-read AttributeArray."); + } + + this->doLoad(); + + if (this->isUniform()) { + os.write(reinterpret_cast(this->data()), sizeof(StorageType)); + } + else if (io::getDataCompression(os) & io::COMPRESS_BLOSC) + { + std::unique_ptr compressedBuffer; + size_t compressedBytes = 0; + const char* charBuffer = reinterpret_cast(this->data()); + const size_t inBytes = this->arrayMemUsage(); + compressedBuffer = compression::bloscCompress(charBuffer, inBytes, compressedBytes); + if (compressedBuffer) { + uint8_t bloscCompressed(1); + os.write(reinterpret_cast(&bloscCompressed), sizeof(uint8_t)); + os.write(reinterpret_cast(compressedBuffer.get()), compressedBytes); + } + else { + uint8_t bloscCompressed(0); + os.write(reinterpret_cast(&bloscCompressed), sizeof(uint8_t)); + os.write(reinterpret_cast(this->data()), inBytes); + } + } + else + { + uint8_t bloscCompressed(0); + os.write(reinterpret_cast(&bloscCompressed), sizeof(uint8_t)); + os.write(reinterpret_cast(this->data()), this->arrayMemUsage()); + } +} + + +template +void +TypedAttributeArray::writePagedBuffers(compression::PagedOutputStream& os, bool outputTransient) const +{ + if (!outputTransient && this->isTransient()) return; + + // paged compression only available when Blosc is enabled + bool bloscCompression = io::getDataCompression(os.getOutputStream()) & io::COMPRESS_BLOSC; + if (!bloscCompression) { + if (!os.sizeOnly()) this->writeBuffers(os.getOutputStream(), outputTransient); + return; + } + + if (mFlags & PARTIALREAD) { + OPENVDB_THROW(IoError, "Cannot write out a partially-read AttributeArray."); + } + + this->doLoad(); + + os.write(reinterpret_cast(this->data()), this->arrayMemUsage()); +} + + +template +void +TypedAttributeArray::doLoadUnsafe(const bool /*compression*/) const +{ + if (!(this->isOutOfCore())) return; + + // this function expects the mutex to already be locked + + auto* self = const_cast*>(this); + + assert(self->mPageHandle); + assert(!(self->mFlags & PARTIALREAD)); + + std::unique_ptr buffer = self->mPageHandle->read(); + + self->mData.reset(reinterpret_cast(buffer.release())); + + self->mPageHandle.reset(); + + // clear all write and out-of-core flags + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + self->mOutOfCore = false; +#else + self->mFlags &= uint8_t(~OUTOFCORE); +#endif +} + + +template +AttributeArray::AccessorBasePtr +TypedAttributeArray::getAccessor() const +{ + // use the faster 'unsafe' get and set methods as attribute handles + // ensure data is uncompressed and in-core when constructed + + return AccessorBasePtr(new AttributeArray::Accessor( + &TypedAttributeArray::getUnsafe, + &TypedAttributeArray::setUnsafe, + &TypedAttributeArray::collapse, + &TypedAttributeArray::fill)); +} + + +template +bool +TypedAttributeArray::isEqual(const AttributeArray& other) const +{ + const TypedAttributeArray* const otherT = dynamic_cast* >(&other); + if(!otherT) return false; + if(this->mSize != otherT->mSize || + this->mStrideOrTotalSize != otherT->mStrideOrTotalSize || + this->mIsUniform != otherT->mIsUniform || + this->attributeType() != this->attributeType()) return false; + + this->doLoad(); + otherT->doLoad(); + + const StorageType *target = this->data(), *source = otherT->data(); + if (!target && !source) return true; + if (!target || !source) return false; + Index n = this->mIsUniform ? 1 : mSize; + while (n && math::isExactlyEqual(*target++, *source++)) --n; + return n == 0; +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 +template +char* +TypedAttributeArray::dataAsByteArray() +{ + return reinterpret_cast(this->data()); +} + + +template +const char* +TypedAttributeArray::dataAsByteArray() const +{ + return reinterpret_cast(this->data()); +} +#endif + + +//////////////////////////////////////// + + +/// Accessor to call unsafe get and set methods based on templated Codec and Value +template +struct AccessorEval +{ + using GetterPtr = ValueType (*)(const AttributeArray* array, const Index n); + using SetterPtr = void (*)(AttributeArray* array, const Index n, const ValueType& value); + + /// Getter that calls to TypedAttributeArray::getUnsafe() + /// @note Functor argument is provided but not required for the generic case + static ValueType get(GetterPtr /*functor*/, const AttributeArray* array, const Index n) { + return TypedAttributeArray::getUnsafe(array, n); + } + + /// Getter that calls to TypedAttributeArray::setUnsafe() + /// @note Functor argument is provided but not required for the generic case + static void set(SetterPtr /*functor*/, AttributeArray* array, const Index n, const ValueType& value) { + TypedAttributeArray::setUnsafe(array, n, value); + } +}; + + +/// Partial specialization when Codec is not known at compile-time to use the supplied functor instead +template +struct AccessorEval +{ + using GetterPtr = ValueType (*)(const AttributeArray* array, const Index n); + using SetterPtr = void (*)(AttributeArray* array, const Index n, const ValueType& value); + + /// Getter that calls the supplied functor + static ValueType get(GetterPtr functor, const AttributeArray* array, const Index n) { + return (*functor)(array, n); + } + + /// Setter that calls the supplied functor + static void set(SetterPtr functor, AttributeArray* array, const Index n, const ValueType& value) { + (*functor)(array, n, value); + } +}; + + +//////////////////////////////////////// + +// AttributeHandle implementation + +template +typename AttributeHandle::Ptr +AttributeHandle::create(const AttributeArray& array, const bool collapseOnDestruction) +{ + return typename AttributeHandle::Ptr( + new AttributeHandle(array, collapseOnDestruction)); +} + +template +AttributeHandle::AttributeHandle(const AttributeArray& array, const bool collapseOnDestruction) + : mArray(&array) + , mStrideOrTotalSize(array.hasConstantStride() ? array.stride() : 1) + , mSize(array.hasConstantStride() ? array.size() : array.dataSize()) + , mCollapseOnDestruction(collapseOnDestruction && array.isStreaming()) +{ + if (!this->compatibleType::value>()) { + OPENVDB_THROW(TypeError, "Cannot bind handle due to incompatible type of AttributeArray."); + } + + // load data if delay-loaded + + mArray->loadData(); + + // bind getter and setter methods + + AttributeArray::AccessorBasePtr accessor = mArray->getAccessor(); + assert(accessor); + + AttributeArray::Accessor* typedAccessor = static_cast*>(accessor.get()); + + mGetter = typedAccessor->mGetter; + mSetter = typedAccessor->mSetter; + mCollapser = typedAccessor->mCollapser; + mFiller = typedAccessor->mFiller; +} + +template +AttributeHandle::~AttributeHandle() +{ + // if enabled, attribute is collapsed on destruction of the handle to save memory + if (mCollapseOnDestruction) const_cast(this->mArray)->collapse(); +} + +template +template +typename std::enable_if::type +AttributeHandle::compatibleType() const +{ + // if codec is unknown, just check the value type + + return mArray->hasValueType(); +} + +template +template +typename std::enable_if::type +AttributeHandle::compatibleType() const +{ + // if the codec is known, check the value type and codec + + return mArray->isType>(); +} + +template +const AttributeArray& AttributeHandle::array() const +{ + assert(mArray); + return *mArray; +} + +template +Index AttributeHandle::index(Index n, Index m) const +{ + Index index = n * mStrideOrTotalSize + m; + assert(index < (mSize * mStrideOrTotalSize)); + return index; +} + +template +ValueType AttributeHandle::get(Index n, Index m) const +{ + return this->get::value>(this->index(n, m)); +} + +template +template +typename std::enable_if::type +AttributeHandle::get(Index index) const +{ + // if the codec is unknown, use the getter functor + + return (*mGetter)(mArray, index); +} + +template +template +typename std::enable_if::type +AttributeHandle::get(Index index) const +{ + // if the codec is known, call the method on the attribute array directly + + return TypedAttributeArray::getUnsafe(mArray, index); +} + +template +bool AttributeHandle::isUniform() const +{ + return mArray->isUniform(); +} + +template +bool AttributeHandle::hasConstantStride() const +{ + return mArray->hasConstantStride(); +} + +//////////////////////////////////////// + +// AttributeWriteHandle implementation + +template +typename AttributeWriteHandle::Ptr +AttributeWriteHandle::create(AttributeArray& array, const bool expand) +{ + return typename AttributeWriteHandle::Ptr( + new AttributeWriteHandle(array, expand)); +} + +template +AttributeWriteHandle::AttributeWriteHandle(AttributeArray& array, const bool expand) + : AttributeHandle(array, /*collapseOnDestruction=*/false) +{ + if (expand) array.expand(); +} + +template +void AttributeWriteHandle::set(Index n, const ValueType& value) +{ + this->set::value>(this->index(n, 0), value); +} + +template +void AttributeWriteHandle::set(Index n, Index m, const ValueType& value) +{ + this->set::value>(this->index(n, m), value); +} + +template +void AttributeWriteHandle::expand(const bool fill) +{ + const_cast(this->mArray)->expand(fill); +} + +template +void AttributeWriteHandle::collapse() +{ + const_cast(this->mArray)->collapse(); +} + +template +bool AttributeWriteHandle::compact() +{ + return const_cast(this->mArray)->compact(); +} + +template +void AttributeWriteHandle::collapse(const ValueType& uniformValue) +{ + this->mCollapser(const_cast(this->mArray), uniformValue); +} + +template +void AttributeWriteHandle::fill(const ValueType& value) +{ + this->mFiller(const_cast(this->mArray), value); +} + +template +template +typename std::enable_if::type +AttributeWriteHandle::set(Index index, const ValueType& value) const +{ + // if the codec is unknown, use the setter functor + + (*this->mSetter)(const_cast(this->mArray), index, value); +} + +template +template +typename std::enable_if::type +AttributeWriteHandle::set(Index index, const ValueType& value) const +{ + // if the codec is known, call the method on the attribute array directly + + TypedAttributeArray::setUnsafe(const_cast(this->mArray), index, value); +} + +template +AttributeArray& AttributeWriteHandle::array() +{ + assert(this->mArray); + return *const_cast(this->mArray); +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_ATTRIBUTE_ARRAY_HAS_BEEN_INCLUDED diff --git a/openvdb/points/AttributeArrayString.cc b/openvdb/points/AttributeArrayString.cc new file mode 100644 index 00000000..6cd71c4e --- /dev/null +++ b/openvdb/points/AttributeArrayString.cc @@ -0,0 +1,366 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeArrayString.cc + +#include "AttributeArrayString.h" + +#include +#include + +#include + +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +namespace { + + bool isStringMeta(const Name& key, const Metadata::ConstPtr& meta) + { + // ensure the metadata is StringMetadata + if (meta->typeName() != "string") return false; + // string attribute metadata must have a key that starts "string:" + if (key.compare(0, 7, "string:") != 0) return false; + + return true; + } + + Name getStringKey(const StringIndexType index) + { + return "string:" + std::to_string(index - 1); + } + + StringIndexType getStringIndex(const Name& key) + { + const Name indexStr = key.substr(7, key.size() - 7); + // extract the index as an unsigned integer + return static_cast(std::stoul(indexStr)) + 1; + } + +} // namespace + + +//////////////////////////////////////// + + +// StringMetaInserter implementation + + +StringMetaInserter::StringMetaInserter(MetaMap& metadata) + : mMetadata(metadata) + , mIdBlocks() + , mValues() +{ + // populate the cache + resetCache(); +} + + +void StringMetaInserter::insert(const Name& name) +{ + using IterT = std::vector>::iterator; + + // if name already exists, do nothing + + if (mValues.count(name)) return; + + // look through the id blocks for the next available index + + Index index = 1; + IterT iter = mIdBlocks.begin(); + for (; iter != mIdBlocks.end(); ++iter) { + const Index start = iter->first; + const Index end = start + iter->second; + + if (index < start || index >= end) break; + index = end; + } + + // index now holds the next valid index. if it's 1 (the beginning + // iterator) no initial block exists - add it + + IterT block; + if (iter == mIdBlocks.begin()) { + block = mIdBlocks.insert(iter, {1, 1}); + iter = std::next(block); + } + else { + // accumulate the id block size where the next index is going + block = std::prev(iter); + block->second += 1; + } + + // see if this block and the next block can be compacted + + if (iter != mIdBlocks.end() && + block->second + 1 == iter->first) { + block->second += iter->second; + mIdBlocks.erase(iter); + } + + // insert into metadata + + const Name key = getStringKey(index); + mMetadata.insertMeta(key, StringMetadata(name)); + + // update the cache + + mValues.emplace(name); +} + + +void StringMetaInserter::resetCache() +{ + mValues.clear(); + mIdBlocks.clear(); + + std::vector stringIndices; + + for (auto it = mMetadata.beginMeta(), itEnd = mMetadata.endMeta(); it != itEnd; ++it) { + const Name& key = it->first; + const Metadata::ConstPtr meta = it->second; + + // ensure the metadata is StringMetadata and key starts "string:" + if (!isStringMeta(key, meta)) continue; + + // extract index + stringIndices.emplace_back(getStringIndex(key)); + + // extract value from metadata and add to cache + const StringMetadata* stringMeta = static_cast(meta.get()); + assert(stringMeta); + mValues.insert(stringMeta->value()); + } + + if (stringIndices.empty()) return; + + tbb::parallel_sort(stringIndices.begin(), stringIndices.end()); + + // bucket string indices + + Index key = stringIndices.front(); + Index size = 0; + + // For each id, see if it's adjacent id is sequentially increasing and continue to + // track how many are until we find a value that isn't. Store the start and length + // of each of these blocks. For example, the following container could be created + // consisting of 3 elements: + // key -> size + // ------------- + // 7 -> 1000 (values 7->1007) + // 1020 -> 5 (values 1020->1025) + // 2013 -> 30 (values 2013->2043) + // Note that the end value is exclusive (values 1007, 1025 and 2043 do not exist + // given the above example) + + for (const Index id : stringIndices) { + if (key + size != id) { + assert(size > 0); + mIdBlocks.emplace_back(key, size); + size = 0; + key = id; + } + ++size; + } + + // add the last block + mIdBlocks.emplace_back(key, size); +} + + +//////////////////////////////////////// + +// StringAttributeHandle implementation + + +StringAttributeHandle::Ptr +StringAttributeHandle::create(const AttributeArray& array, const MetaMap& metadata, const bool preserveCompression) +{ + return std::make_shared(array, metadata, preserveCompression); +} + + +StringAttributeHandle::StringAttributeHandle(const AttributeArray& array, + const MetaMap& metadata, + const bool preserveCompression) + : mHandle(array, preserveCompression) + , mMetadata(metadata) +{ + if (!isString(array)) { + OPENVDB_THROW(TypeError, "Cannot create a StringAttributeHandle for an attribute array that is not a string."); + } +} + + +Name StringAttributeHandle::get(Index n, Index m) const +{ + Name name; + this->get(name, n, m); + return name; +} + + +void StringAttributeHandle::get(Name& name, Index n, Index m) const +{ + StringIndexType index = mHandle.get(n, m); + + // index zero is reserved for an empty string + + if (index == 0) { + name = ""; + return; + } + + const Name key = getStringKey(index); + + // key is assumed to exist in metadata + + openvdb::StringMetadata::ConstPtr meta = mMetadata.getMetadata(key); + + if (!meta) { + OPENVDB_THROW(LookupError, "String attribute cannot be found with index - \"" << index << "\"."); + } + + name = meta->value(); +} + +const AttributeArray& StringAttributeHandle::array() const +{ + return mHandle.array(); +} + + +//////////////////////////////////////// + +// StringAttributeWriteHandle implementation + +StringAttributeWriteHandle::Ptr +StringAttributeWriteHandle::create(AttributeArray& array, const MetaMap& metadata, const bool expand) +{ + return std::make_shared(array, metadata, expand); +} + + +StringAttributeWriteHandle::StringAttributeWriteHandle(AttributeArray& array, + const MetaMap& metadata, + const bool expand) + : StringAttributeHandle(array, metadata, /*preserveCompression=*/ false) + , mWriteHandle(array, expand) +{ + // populate the cache + resetCache(); +} + + +void StringAttributeWriteHandle::expand(bool fill) +{ + mWriteHandle.expand(fill); +} + + +void StringAttributeWriteHandle::collapse() +{ + // zero is used for an empty string + mWriteHandle.collapse(0); +} + + +void StringAttributeWriteHandle::collapse(const Name& name) +{ + Index index = getIndex(name); + mWriteHandle.collapse(index); +} + + +bool StringAttributeWriteHandle::compact() +{ + return mWriteHandle.compact(); +} + + +void StringAttributeWriteHandle::fill(const Name& name) +{ + Index index = getIndex(name); + mWriteHandle.fill(index); +} + + +void StringAttributeWriteHandle::set(Index n, const Name& name) +{ + Index index = getIndex(name); + mWriteHandle.set(n, /*stride*/0, index); +} + + +void StringAttributeWriteHandle::set(Index n, Index m, const Name& name) +{ + Index index = getIndex(name); + mWriteHandle.set(n, m, index); +} + + +void StringAttributeWriteHandle::resetCache() +{ + mCache.clear(); + + // re-populate the cache + + for (auto it = mMetadata.beginMeta(), itEnd = mMetadata.endMeta(); it != itEnd; ++it) { + const Name& key = it->first; + const Metadata::Ptr meta = it->second; + + // ensure the metadata is StringMetadata and key starts "string:" + if (!isStringMeta(key, meta)) continue; + + const auto* stringMeta = static_cast(meta.get()); + assert(stringMeta); + + // remove "string:" + Index index = getStringIndex(key); + + // add to the cache + mCache[stringMeta->value()] = index; + } +} + + +AttributeArray& StringAttributeWriteHandle::array() +{ + return mWriteHandle.array(); +} + + +bool StringAttributeWriteHandle::contains(const Name& name) const +{ + // empty strings always have an index at index zero + if (name.empty()) return true; + return mCache.find(name) != mCache.end(); +} + + +Index StringAttributeWriteHandle::getIndex(const Name& name) const +{ + // zero used for an empty string + if (name.empty()) return Index(0); + + auto it = mCache.find(name); + + if (it == mCache.end()) { + OPENVDB_THROW(LookupError, "String does not exist in Metadata, insert it and reset the cache - \"" << name << "\"."); + } + + return it->second; +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/points/AttributeArrayString.h b/openvdb/points/AttributeArrayString.h new file mode 100644 index 00000000..be09392f --- /dev/null +++ b/openvdb/points/AttributeArrayString.h @@ -0,0 +1,203 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeArrayString.h +/// +/// @author Dan Bailey +/// +/// @brief Attribute array storage for string data using Descriptor Metadata. + +#ifndef OPENVDB_POINTS_ATTRIBUTE_ARRAY_STRING_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_ATTRIBUTE_ARRAY_STRING_HAS_BEEN_INCLUDED + +#include "AttributeArray.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +//////////////////////////////////////// + + +using StringIndexType = uint32_t; + + +namespace attribute_traits +{ + template struct StringTypeTrait { using Type = StringIndexType; }; + template<> struct StringTypeTrait { using Type = uint16_t; }; +} + + +template +struct StringCodec +{ + using ValueType = StringIndexType; + + template + struct Storage { using Type = typename attribute_traits::StringTypeTrait::Type; }; + + template static void decode(const StorageType&, ValueType&); + template static void encode(const ValueType&, StorageType&); + static const char* name() { return Truncate ? "str_trnc" : "str"; } +}; + + +using StringAttributeArray = TypedAttributeArray>; + + +//////////////////////////////////////// + + +class OPENVDB_API StringMetaInserter +{ +public: + StringMetaInserter(MetaMap& metadata); + + /// Insert the string into the metadata + void insert(const Name& name); + + /// Reset the cache from the metadata + void resetCache(); + +private: + MetaMap& mMetadata; + std::vector> mIdBlocks; + std::unordered_set mValues; +}; // StringMetaInserter + + +//////////////////////////////////////// + + +template +template +inline void +StringCodec::decode(const StorageType& data, ValueType& val) +{ + val = static_cast(data); +} + + +template +template +inline void +StringCodec::encode(const ValueType& val, StorageType& data) +{ + data = static_cast(val); +} + + +//////////////////////////////////////// + + +inline bool isString(const AttributeArray& array) +{ + return array.isType(); +} + + +//////////////////////////////////////// + + +class OPENVDB_API StringAttributeHandle +{ +public: + using Ptr = std::shared_ptr;//SharedPtr; + + static Ptr create(const AttributeArray& array, const MetaMap& metadata, const bool preserveCompression = true); + + StringAttributeHandle( const AttributeArray& array, + const MetaMap& metadata, + const bool preserveCompression = true); + + Index stride() const { return mHandle.stride(); } + Index size() const { return mHandle.size(); } + + bool isUniform() const { return mHandle.isUniform(); } + bool hasConstantStride() const { return mHandle.hasConstantStride(); } + + Name get(Index n, Index m = 0) const; + void get(Name& name, Index n, Index m = 0) const; + + /// @brief Returns a reference to the array held in the Handle. + const AttributeArray& array() const; + +protected: + AttributeHandle> mHandle; + const MetaMap& mMetadata; +}; // class StringAttributeHandle + + +//////////////////////////////////////// + + +class OPENVDB_API StringAttributeWriteHandle : public StringAttributeHandle +{ +public: + using Ptr = std::shared_ptr;//SharedPtr; + + static Ptr create(AttributeArray& array, const MetaMap& metadata, const bool expand = true); + + StringAttributeWriteHandle( AttributeArray& array, + const MetaMap& metadata, + const bool expand = true); + + /// @brief If this array is uniform, replace it with an array of length size(). + /// @param fill if true, assign the uniform value to each element of the array. + void expand(bool fill = true); + + /// @brief Set membership for the whole array and attempt to collapse + void collapse(); + /// @brief Set membership for the whole array and attempt to collapse + /// @param name Name of the String + void collapse(const Name& name); + + /// Compact the existing array to become uniform if all values are identical + bool compact(); + + /// @brief Fill the existing array with the given value. + /// @note Identical to collapse() except a non-uniform array will not become uniform. + void fill(const Name& name); + + /// Set the value of the index to @a name + void set(Index n, const Name& name); + void set(Index n, Index m, const Name& name); + + /// Reset the value cache from the metadata + void resetCache(); + + /// @brief Returns a reference to the array held in the Write Handle. + AttributeArray& array(); + + /// @brief Returns whether or not the metadata cache contains a given value. + /// @param name Name of the String. + bool contains(const Name& name) const; + +private: + /// Retrieve the index of this string value from the cache + /// @note throws if name does not exist in cache + Index getIndex(const Name& name) const; + + using ValueMap = std::unordered_map; + + ValueMap mCache; + AttributeWriteHandle> mWriteHandle; +}; // class StringAttributeWriteHandle + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_ATTRIBUTE_ARRAY_STRING_HAS_BEEN_INCLUDED + diff --git a/openvdb/points/AttributeGroup.cc b/openvdb/points/AttributeGroup.cc new file mode 100644 index 00000000..f88d4d11 --- /dev/null +++ b/openvdb/points/AttributeGroup.cc @@ -0,0 +1,116 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeGroup.cc + +#include "AttributeGroup.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +//////////////////////////////////////// + +// GroupHandle implementation + + +GroupHandle::GroupHandle(const GroupAttributeArray& array, const GroupType& offset) + : mArray(array) + , mBitMask(static_cast(1 << offset)) +{ + assert(isGroup(mArray)); + + // load data if delay-loaded + + mArray.loadData(); +} + + +GroupHandle::GroupHandle(const GroupAttributeArray& array, const GroupType& bitMask, + BitMask) + : mArray(array) + , mBitMask(bitMask) +{ + assert(isGroup(mArray)); + + // load data if delay-loaded + + mArray.loadData(); +} + + +bool GroupHandle::get(Index n) const +{ + return (mArray.get(n) & mBitMask) == mBitMask; +} + + +bool GroupHandle::getUnsafe(Index n) const +{ + return (mArray.getUnsafe(n) & mBitMask) == mBitMask; +} + + +//////////////////////////////////////// + +// GroupWriteHandle implementation + + +GroupWriteHandle::GroupWriteHandle(GroupAttributeArray& array, const GroupType& offset) + : GroupHandle(array, offset) +{ + assert(isGroup(mArray)); +} + + +void GroupWriteHandle::set(Index n, bool on) +{ + const GroupType& value = mArray.get(n); + + GroupAttributeArray& array(const_cast(mArray)); + + if (on) array.set(n, value | mBitMask); + else array.set(n, value & ~mBitMask); +} + + +bool GroupWriteHandle::collapse(bool on) +{ + using ValueT = GroupAttributeArray::ValueType; + + GroupAttributeArray& array(const_cast(mArray)); + + array.compact(); + + if (this->isUniform()) { + if (on) array.collapse(static_cast(array.get(0) | mBitMask)); + else array.collapse(static_cast(array.get(0) & ~mBitMask)); + return true; + } + + for (Index i = 0; i < array.size(); i++) { + if (on) array.set(i, static_cast(array.get(i) | mBitMask)); + else array.set(i, static_cast(array.get(i) & ~mBitMask)); + } + + return false; +} + + +bool GroupWriteHandle::compact() +{ + GroupAttributeArray& array(const_cast(mArray)); + + return array.compact(); +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/points/AttributeGroup.h b/openvdb/points/AttributeGroup.h new file mode 100644 index 00000000..f99aab5b --- /dev/null +++ b/openvdb/points/AttributeGroup.h @@ -0,0 +1,173 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeGroup.h +/// +/// @author Dan Bailey +/// +/// @brief Attribute Group access and filtering for iteration. + +#ifndef OPENVDB_POINTS_ATTRIBUTE_GROUP_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_ATTRIBUTE_GROUP_HAS_BEEN_INCLUDED + +#include "AttributeArray.h" +#include "AttributeSet.h" +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +using GroupType = uint8_t; + + +//////////////////////////////////////// + + +struct GroupCodec +{ + using StorageType = GroupType; + using ValueType = GroupType; + + template + struct Storage { using Type = StorageType; }; + + static void decode(const StorageType&, ValueType&); + static void encode(const ValueType&, StorageType&); + static const char* name() { return "grp"; } +}; + + +using GroupAttributeArray = TypedAttributeArray; + + +//////////////////////////////////////// + + +inline void +GroupCodec::decode(const StorageType& data, ValueType& val) +{ + val = data; +} + + +inline void +GroupCodec::encode(const ValueType& val, StorageType& data) +{ + data = val; +} + + +//////////////////////////////////////// + + +inline bool isGroup(const AttributeArray& array) +{ + return array.isType(); +} + + +//////////////////////////////////////// + + +class OPENVDB_API GroupHandle +{ +public: + using Ptr = std::shared_ptr; + + // Dummy class that distinguishes an offset from a bitmask on construction + struct BitMask { }; + + using GroupIndex = std::pair; + + GroupHandle(const GroupAttributeArray& array, const GroupType& offset); + GroupHandle(const GroupAttributeArray& array, const GroupType& bitMask, BitMask); + + Index size() const { return mArray.size(); } + bool isUniform() const { return mArray.isUniform(); } + + bool get(Index n) const; + bool getUnsafe(Index n) const; + +protected: + const GroupAttributeArray& mArray; + const GroupType mBitMask; +}; // class GroupHandle + + +//////////////////////////////////////// + + +class OPENVDB_API GroupWriteHandle : public GroupHandle +{ +public: + using Ptr = std::shared_ptr; + + GroupWriteHandle(GroupAttributeArray& array, const GroupType& offset); + + void set(Index n, bool on); + + /// @brief Set membership for the whole array and attempt to collapse + /// + /// @param on True or false for inclusion in group + /// + /// @note This method guarantees that all attributes will have group membership + /// changed according to the input bool, however compaction will not be performed + /// if other groups that share the same underlying array are non-uniform. + /// The return value indicates if the group array ends up being uniform. + bool collapse(bool on); + + /// Compact the existing array to become uniform if all values are identical + bool compact(); + +}; // class GroupWriteHandle + + +//////////////////////////////////////// + + +/// Index filtering on group membership +class GroupFilter +{ +public: + GroupFilter(const Name& name, const AttributeSet& attributeSet) + : mIndex(attributeSet.groupIndex(name)) { } + + explicit GroupFilter(const AttributeSet::Descriptor::GroupIndex& index) + : mIndex(index) { } + + inline bool initialized() const { return bool(mHandle); } + + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + mHandle.reset(new GroupHandle(leaf.groupHandle(mIndex))); + } + + template + bool valid(const IterT& iter) const { + assert(mHandle); + return mHandle->getUnsafe(*iter); + } + +private: + const AttributeSet::Descriptor::GroupIndex mIndex; + GroupHandle::Ptr mHandle; +}; // class GroupFilter + + +//////////////////////////////////////// + + +} // namespace points + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#endif // OPENVDB_POINTS_ATTRIBUTE_GROUP_HAS_BEEN_INCLUDED diff --git a/openvdb/points/AttributeSet.cc b/openvdb/points/AttributeSet.cc new file mode 100644 index 00000000..406b2eb2 --- /dev/null +++ b/openvdb/points/AttributeSet.cc @@ -0,0 +1,1179 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeSet.cc + +#include "AttributeSet.h" +#include "AttributeGroup.h" + +#include // std::equal +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +namespace { + // remove the items from the vector corresponding to the indices + template + void eraseIndices(std::vector& vec, + const std::vector& indices) + { + // early-exit if no indices to erase + + if (indices.empty()) return; + + // build the sorted, unique indices to remove + + std::vector toRemove(indices); + std::sort(toRemove.rbegin(), toRemove.rend()); + toRemove.erase(unique(toRemove.begin(), toRemove.end()), toRemove.end()); + + // throw if the largest index is out of range + + if (*toRemove.begin() >= vec.size()) { + OPENVDB_THROW(LookupError, "Cannot erase indices as index is out of range.") + } + + // erase elements from the back + + for (auto it = toRemove.cbegin(); it != toRemove.cend(); ++it) { + vec.erase(vec.begin() + (*it)); + } + } + + // return true if a string begins with a particular substring + bool startsWith(const std::string& str, const std::string& prefix) + { + return str.compare(0, prefix.length(), prefix) == 0; + } +} + +//////////////////////////////////////// + + +// AttributeSet implementation + + +AttributeSet::AttributeSet() + : mDescr(new Descriptor()) +{ +} + + +AttributeSet::AttributeSet(const AttributeSet& attrSet, Index arrayLength, + const AttributeArray::ScopedRegistryLock* lock) + : mDescr(attrSet.descriptorPtr()) + , mAttrs(attrSet.descriptor().size(), AttributeArray::Ptr()) +{ + std::unique_ptr localLock; + if (!lock) { + localLock.reset(new AttributeArray::ScopedRegistryLock); + lock = localLock.get(); + } + + for (const auto& namePos : mDescr->map()) { + const size_t& pos = namePos.second; + const AttributeArray* existingArray = attrSet.getConst(pos); + const bool constantStride = existingArray->hasConstantStride(); + const Index stride = constantStride ? existingArray->stride() : existingArray->dataSize(); + + AttributeArray::Ptr array = AttributeArray::create(mDescr->type(pos), arrayLength, + stride, constantStride, lock); + + // transfer hidden and transient flags + if (existingArray->isHidden()) array->setHidden(true); + if (existingArray->isTransient()) array->setTransient(true); + + mAttrs[pos] = array; + } +} + + +AttributeSet::AttributeSet(const DescriptorPtr& descr, Index arrayLength, + const AttributeArray::ScopedRegistryLock* lock) + : mDescr(descr) + , mAttrs(descr->size(), AttributeArray::Ptr()) +{ + std::unique_ptr localLock; + if (!lock) { + localLock.reset(new AttributeArray::ScopedRegistryLock); + lock = localLock.get(); + } + + for (const auto& namePos : mDescr->map()) { + const size_t& pos = namePos.second; + mAttrs[pos] = AttributeArray::create(mDescr->type(pos), arrayLength, + /*stride=*/1, /*constantStride=*/true, lock); + } +} + + +AttributeSet::AttributeSet(const AttributeSet& rhs) + : mDescr(rhs.mDescr) + , mAttrs(rhs.mAttrs) +{ +} + + +size_t +AttributeSet::memUsage() const +{ + size_t bytes = sizeof(*this) + mDescr->memUsage(); + for (const auto& attr : mAttrs) { + bytes += attr->memUsage(); + } + return bytes; +} + + +size_t +AttributeSet::find(const std::string& name) const +{ + return mDescr->find(name); +} + + +size_t +AttributeSet::replace(const std::string& name, const AttributeArray::Ptr& attr) +{ + const size_t pos = this->find(name); + return pos != INVALID_POS ? this->replace(pos, attr) : INVALID_POS; +} + + +size_t +AttributeSet::replace(size_t pos, const AttributeArray::Ptr& attr) +{ + assert(pos != INVALID_POS); + assert(pos < mAttrs.size()); + + if (attr->type() != mDescr->type(pos)) { + return INVALID_POS; + } + + mAttrs[pos] = attr; + return pos; +} + + +const AttributeArray* +AttributeSet::getConst(const std::string& name) const +{ + const size_t pos = this->find(name); + if (pos < mAttrs.size()) return this->getConst(pos); + return nullptr; +} + + +const AttributeArray* +AttributeSet::get(const std::string& name) const +{ + return this->getConst(name); +} + + +AttributeArray* +AttributeSet::get(const std::string& name) +{ + const size_t pos = this->find(name); + if (pos < mAttrs.size()) return this->get(pos); + return nullptr; +} + + +const AttributeArray* +AttributeSet::getConst(size_t pos) const +{ + assert(pos != INVALID_POS); + assert(pos < mAttrs.size()); + return mAttrs[pos].get(); +} + + +const AttributeArray* +AttributeSet::get(size_t pos) const +{ + assert(pos != INVALID_POS); + assert(pos < mAttrs.size()); + return this->getConst(pos); +} + + +AttributeArray* +AttributeSet::get(size_t pos) +{ + makeUnique(pos); + return mAttrs[pos].get(); +} + + +size_t +AttributeSet::groupOffset(const Name& group) const +{ + return mDescr->groupOffset(group); +} + + +size_t +AttributeSet::groupOffset(const Util::GroupIndex& index) const +{ + return mDescr->groupOffset(index); +} + + +AttributeSet::Descriptor::GroupIndex +AttributeSet::groupIndex(const Name& group) const +{ + return mDescr->groupIndex(group); +} + + +AttributeSet::Descriptor::GroupIndex +AttributeSet::groupIndex(const size_t offset) const +{ + return mDescr->groupIndex(offset); +} + + +bool +AttributeSet::isShared(size_t pos) const +{ + assert(pos != INVALID_POS); + assert(pos < mAttrs.size()); + return !mAttrs[pos].unique(); +} + + +void +AttributeSet::makeUnique(size_t pos) +{ + assert(pos != INVALID_POS); + assert(pos < mAttrs.size()); + if (!mAttrs[pos].unique()) { + mAttrs[pos] = mAttrs[pos]->copy(); + } +} + + +AttributeArray::Ptr +AttributeSet::appendAttribute( const Name& name, + const NamePair& type, + const Index strideOrTotalSize, + const bool constantStride, + Metadata::Ptr defaultValue) +{ + Descriptor::Ptr descriptor = mDescr->duplicateAppend(name, type); + + // store the attribute default value in the descriptor metadata + if (defaultValue) descriptor->setDefaultValue(name, *defaultValue); + + // extract the index from the descriptor + const size_t pos = descriptor->find(name); + + return this->appendAttribute(*mDescr, descriptor, pos, strideOrTotalSize, constantStride); +} + + +AttributeArray::Ptr +AttributeSet::appendAttribute( const Descriptor& expected, DescriptorPtr& replacement, + const size_t pos, const Index strideOrTotalSize, const bool constantStride, + const AttributeArray::ScopedRegistryLock* lock) +{ + // ensure the descriptor is as expected + if (*mDescr != expected) { + OPENVDB_THROW(LookupError, "Cannot append attributes as descriptors do not match.") + } + + assert(replacement->size() >= mDescr->size()); + + const size_t offset = mDescr->size(); + + // extract the array length from the first attribute array if it exists + + const Index arrayLength = offset > 0 ? this->get(0)->size() : 1; + + // extract the type from the descriptor + + const NamePair& type = replacement->type(pos); + + // append the new array + + AttributeArray::Ptr array = AttributeArray::create( + type, arrayLength, strideOrTotalSize, constantStride, lock); + + // if successful, update Descriptor and append the created array + + mDescr = replacement; + + mAttrs.push_back(array); + + return array; +} + + +void +AttributeSet::dropAttributes(const std::vector& pos) +{ + if (pos.empty()) return; + + Descriptor::Ptr descriptor = mDescr->duplicateDrop(pos); + + this->dropAttributes(pos, *mDescr, descriptor); +} + + +void +AttributeSet::dropAttributes( const std::vector& pos, + const Descriptor& expected, DescriptorPtr& replacement) +{ + if (pos.empty()) return; + + // ensure the descriptor is as expected + if (*mDescr != expected) { + OPENVDB_THROW(LookupError, "Cannot drop attributes as descriptors do not match.") + } + + mDescr = replacement; + + eraseIndices(mAttrs, pos); + + // remove any unused default values + + mDescr->pruneUnusedDefaultValues(); +} + + +void +AttributeSet::renameAttributes(const Descriptor& expected, const DescriptorPtr& replacement) +{ + // ensure the descriptor is as expected + if (*mDescr != expected) { + OPENVDB_THROW(LookupError, "Cannot rename attribute as descriptors do not match.") + } + + mDescr = replacement; +} + + +void +AttributeSet::reorderAttributes(const DescriptorPtr& replacement) +{ + if (*mDescr == *replacement) { + this->resetDescriptor(replacement); + return; + } + + if (!mDescr->hasSameAttributes(*replacement)) { + OPENVDB_THROW(LookupError, "Cannot reorder attributes as descriptors do not contain the same attributes.") + } + + AttrArrayVec attrs(replacement->size()); + + // compute target indices for attributes from the given decriptor + for (const auto& namePos : mDescr->map()) { + const size_t index = replacement->find(namePos.first); + attrs[index] = AttributeArray::Ptr(mAttrs[namePos.second]); + } + + // copy the ordering to the member attributes vector and update descriptor to be target + std::copy(attrs.begin(), attrs.end(), mAttrs.begin()); + mDescr = replacement; +} + + +void +AttributeSet::resetDescriptor(const DescriptorPtr& replacement, const bool allowMismatchingDescriptors) +{ + // ensure the descriptors match + if (!allowMismatchingDescriptors && *mDescr != *replacement) { + OPENVDB_THROW(LookupError, "Cannot swap descriptor as replacement does not match.") + } + + mDescr = replacement; +} + + +void +AttributeSet::read(std::istream& is) +{ + this->readDescriptor(is); + this->readMetadata(is); + this->readAttributes(is); +} + + +void +AttributeSet::write(std::ostream& os, bool outputTransient) const +{ + this->writeDescriptor(os, outputTransient); + this->writeMetadata(os, outputTransient); + this->writeAttributes(os, outputTransient); +} + + +void +AttributeSet::readDescriptor(std::istream& is) +{ + mDescr->read(is); +} + + +void +AttributeSet::writeDescriptor(std::ostream& os, bool outputTransient) const +{ + // build a vector of all attribute arrays that have a transient flag + // unless also writing transient attributes + + std::vector transientArrays; + + if (!outputTransient) { + for (size_t i = 0; i < size(); i++) { + const AttributeArray* array = this->getConst(i); + if (array->isTransient()) { + transientArrays.push_back(i); + } + } + } + + // write out a descriptor without transient attributes + + if (transientArrays.empty()) { + mDescr->write(os); + } + else { + Descriptor::Ptr descr = mDescr->duplicateDrop(transientArrays); + descr->write(os); + } +} + + +void +AttributeSet::readMetadata(std::istream& is) +{ + AttrArrayVec(mDescr->size()).swap(mAttrs); // allocate vector + + for (size_t n = 0, N = mAttrs.size(); n < N; ++n) { + mAttrs[n] = AttributeArray::create(mDescr->type(n), 1, 1); + mAttrs[n]->readMetadata(is); + } +} + + +void +AttributeSet::writeMetadata(std::ostream& os, bool outputTransient, bool paged) const +{ + // write attribute metadata + + for (size_t i = 0; i < size(); i++) { + const AttributeArray* array = this->getConst(i); + array->writeMetadata(os, outputTransient, paged); + } +} + + +void +AttributeSet::readAttributes(std::istream& is) +{ + for (size_t i = 0; i < mAttrs.size(); i++) { + mAttrs[i]->readBuffers(is); + } +} + + +void +AttributeSet::writeAttributes(std::ostream& os, bool outputTransient) const +{ + for (auto attr : mAttrs) { + attr->writeBuffers(os, outputTransient); + } +} + + +bool +AttributeSet::operator==(const AttributeSet& other) const { + if(*this->mDescr != *other.mDescr) return false; + if(this->mAttrs.size() != other.mAttrs.size()) return false; + + for (size_t n = 0; n < this->mAttrs.size(); ++n) { + if (*this->mAttrs[n] != *other.mAttrs[n]) return false; + } + return true; +} + +//////////////////////////////////////// + +// AttributeSet::Descriptor implementation + + +AttributeSet::Descriptor::Descriptor() +{ +} + + +AttributeSet::Descriptor::Descriptor(const Descriptor& rhs) + : mNameMap(rhs.mNameMap) + , mTypes(rhs.mTypes) + , mGroupMap(rhs.mGroupMap) + , mMetadata(rhs.mMetadata) +{ +} + + +bool +AttributeSet::Descriptor::operator==(const Descriptor& rhs) const +{ + if (this == &rhs) return true; + + if (mTypes.size() != rhs.mTypes.size() || + mNameMap.size() != rhs.mNameMap.size() || + mGroupMap.size() != rhs.mGroupMap.size()) { + return false; + } + + for (size_t n = 0, N = mTypes.size(); n < N; ++n) { + if (mTypes[n] != rhs.mTypes[n]) return false; + } + + if (this->mMetadata != rhs.mMetadata) return false; + + return std::equal(mGroupMap.begin(), mGroupMap.end(), rhs.mGroupMap.begin()) && + std::equal(mNameMap.begin(), mNameMap.end(), rhs.mNameMap.begin()); +} + + +bool +AttributeSet::Descriptor::hasSameAttributes(const Descriptor& rhs) const +{ + if (this == &rhs) return true; + + if (mTypes.size() != rhs.mTypes.size() || + mNameMap.size() != rhs.mNameMap.size() || + mGroupMap.size() != rhs.mGroupMap.size()) { + return false; + } + + for (const auto& namePos : mNameMap) { + const size_t index = rhs.find(namePos.first); + + if (index == INVALID_POS) return false; + + if (mTypes[namePos.second] != rhs.mTypes[index]) return false; + } + + return std::equal(mGroupMap.begin(), mGroupMap.end(), rhs.mGroupMap.begin()); +} + + +size_t +AttributeSet::Descriptor::count(const NamePair& matchType) const +{ + return std::count(mTypes.begin(), mTypes.end(), matchType); +} + + +size_t +AttributeSet::Descriptor::memUsage() const +{ + size_t bytes = sizeof(NameToPosMap::mapped_type) * this->size(); + for (const auto& namePos : mNameMap) { + bytes += namePos.first.capacity(); + } + + for (const NamePair& type : mTypes) { + bytes += type.first.capacity(); + bytes += type.second.capacity(); + } + + return sizeof(*this) + bytes; +} + + +size_t +AttributeSet::Descriptor::find(const std::string& name) const +{ + auto it = mNameMap.find(name); + if (it != mNameMap.end()) { + return it->second; + } + return INVALID_POS; +} + + +size_t +AttributeSet::Descriptor::rename(const std::string& fromName, const std::string& toName) +{ + if (!validName(toName)) throw RuntimeError("Attribute name contains invalid characters - " + toName); + + size_t pos = INVALID_POS; + + // check if the new name is already used. + auto it = mNameMap.find(toName); + if (it != mNameMap.end()) return pos; + + it = mNameMap.find(fromName); + if (it != mNameMap.end()) { + pos = it->second; + mNameMap.erase(it); + mNameMap[toName] = pos; + + // rename default value if it exists + + std::stringstream ss; + ss << "default:" << fromName; + + Metadata::Ptr defaultValue = mMetadata[ss.str()]; + + if (defaultValue) { + mMetadata.removeMeta(ss.str()); + ss.str(""); + ss << "default:" << toName; + mMetadata.insertMeta(ss.str(), *defaultValue); + } + } + return pos; +} + +size_t +AttributeSet::Descriptor::renameGroup(const std::string& fromName, const std::string& toName) +{ + if (!validName(toName)) throw RuntimeError("Group name contains invalid characters - " + toName); + + size_t pos = INVALID_POS; + + // check if the new name is already used. + auto it = mGroupMap.find(toName); + if (it != mGroupMap.end()) return pos; + + it = mGroupMap.find(fromName); + if (it != mGroupMap.end()) { + pos = it->second; + mGroupMap.erase(it); + mGroupMap[toName] = pos; + } + + return pos; +} + + +const Name& +AttributeSet::Descriptor::valueType(size_t pos) const +{ + // pos is assumed to exist + return this->type(pos).first; +} + + +const NamePair& +AttributeSet::Descriptor::type(size_t pos) const +{ + // assert that pos is valid and in-range + + assert(pos != AttributeSet::INVALID_POS); + assert(pos < mTypes.size()); + + return mTypes[pos]; +} + + +MetaMap& +AttributeSet::Descriptor::getMetadata() +{ + return mMetadata; +} + + +const MetaMap& +AttributeSet::Descriptor::getMetadata() const +{ + return mMetadata; +} + + +bool +AttributeSet::Descriptor::hasDefaultValue(const Name& name) const +{ + std::stringstream ss; + ss << "default:" << name; + + return bool(mMetadata[ss.str()]); +} + + +void +AttributeSet::Descriptor::setDefaultValue(const Name& name, const Metadata& defaultValue) +{ + const size_t pos = find(name); + if (pos == INVALID_POS) { + OPENVDB_THROW(LookupError, "Cannot find attribute name to set default value.") + } + + // check type of metadata matches attribute type + + const Name& valueType = this->valueType(pos); + if (valueType != defaultValue.typeName()) { + OPENVDB_THROW(TypeError, "Mis-matching Default Value Type"); + } + + std::stringstream ss; + ss << "default:" << name; + + mMetadata.insertMeta(ss.str(), defaultValue); +} + + +void +AttributeSet::Descriptor::removeDefaultValue(const Name& name) +{ + std::stringstream ss; + ss << "default:" << name; + + mMetadata.removeMeta(ss.str()); +} + + +void +AttributeSet::Descriptor::pruneUnusedDefaultValues() +{ + // store any default metadata keys for which the attribute name is no longer present + + std::vector metaToErase; + + for (auto it = mMetadata.beginMeta(), itEnd = mMetadata.endMeta(); it != itEnd; ++it) { + const Name name = it->first; + + // ignore non-default metadata + if (!startsWith(name, "default:")) continue; + + const Name defaultName = name.substr(8, it->first.size() - 8); + + if (mNameMap.find(defaultName) == mNameMap.end()) { + metaToErase.push_back(name); + } + } + + // remove this metadata + + for (const Name& name : metaToErase) { + mMetadata.removeMeta(name); + } +} + + +size_t +AttributeSet::Descriptor::insert(const std::string& name, const NamePair& typeName) +{ + if (!validName(name)) throw RuntimeError("Attribute name contains invalid characters - " + name); + + size_t pos = INVALID_POS; + auto it = mNameMap.find(name); + if (it != mNameMap.end()) { + assert(it->second < mTypes.size()); + if (mTypes[it->second] != typeName) { + OPENVDB_THROW(KeyError, + "Cannot insert into a Descriptor with a duplicate name, but different type.") + } + pos = it->second; + } else { + + if (!AttributeArray::isRegistered(typeName)) { + OPENVDB_THROW(KeyError, "Failed to insert '" << name + << "' with unregistered attribute type '" << typeName.first << "_" << typeName.second); + } + + pos = mTypes.size(); + mTypes.push_back(typeName); + mNameMap.insert(it, NameToPosMap::value_type(name, pos)); + } + return pos; +} + +AttributeSet::Descriptor::Ptr +AttributeSet::Descriptor::create(const NameAndTypeVec& attrs, + const NameToPosMap& groupMap, + const MetaMap& metadata) +{ + auto newDescriptor = std::make_shared(); + + for (const NameAndType& attr : attrs) { + newDescriptor->insert(attr.name, attr.type); + } + + newDescriptor->mGroupMap = groupMap; + newDescriptor->mMetadata = metadata; + + return newDescriptor; +} + +AttributeSet::Descriptor::Ptr +AttributeSet::Descriptor::create(const NamePair& positionType) +{ + auto descr = std::make_shared(); + descr->insert("P", positionType); + return descr; +} + +AttributeSet::Descriptor::Ptr +AttributeSet::Descriptor::duplicateAppend(const Name& name, const NamePair& type) const +{ + Inserter attributes; + + this->appendTo(attributes.vec); + attributes.add(NameAndType(name, type)); + + return Descriptor::create(attributes.vec, mGroupMap, mMetadata); +} + + +AttributeSet::Descriptor::Ptr +AttributeSet::Descriptor::duplicateDrop(const std::vector& pos) const +{ + NameAndTypeVec vec; + this->appendTo(vec); + + Descriptor::Ptr descriptor; + + // If groups exist, check to see if those arrays are being dropped + + if (!mGroupMap.empty()) { + + // extract all attribute array group indices and specific groups + // to drop + + std::vector groups, groupsToDrop; + for (size_t i = 0; i < vec.size(); i++) { + if (vec[i].type == GroupAttributeArray::attributeType()) { + groups.push_back(i); + if (std::find(pos.begin(), pos.end(), i) != pos.end()) { + groupsToDrop.push_back(i); + } + } + } + + // drop the indices in indices from vec + + eraseIndices(vec, pos); + + if (!groupsToDrop.empty()) { + + // configure group mapping if group arrays have been dropped + + NameToPosMap droppedGroupMap = mGroupMap; + + const size_t GROUP_BITS = sizeof(GroupType) * CHAR_BIT; + for (auto iter = droppedGroupMap.begin(); iter != droppedGroupMap.end();) { + const size_t groupArrayPos = iter->second / GROUP_BITS; + const size_t arrayPos = groups[groupArrayPos]; + if (std::find(pos.begin(), pos.end(), arrayPos) != pos.end()) { + iter = droppedGroupMap.erase(iter); + } + else { + size_t offset(0); + for (const size_t& idx : groupsToDrop) { + if (idx >= arrayPos) break; + ++offset; + } + iter->second -= (offset * GROUP_BITS); + ++iter; + } + } + + descriptor = Descriptor::create(vec, droppedGroupMap, mMetadata); + + // remove any unused default values + + descriptor->pruneUnusedDefaultValues(); + + return descriptor; + } + } + else { + + // drop the indices in pos from vec + + eraseIndices(vec, pos); + } + + descriptor = Descriptor::create(vec, mGroupMap, mMetadata); + + // remove any unused default values + + descriptor->pruneUnusedDefaultValues(); + + return descriptor; +} + +void +AttributeSet::Descriptor::appendTo(NameAndTypeVec& attrs) const +{ + // build a std::map (ie key and value swapped) + + using PosToNameMap = std::map; + + PosToNameMap posToNameMap; + + for (const auto& namePos : mNameMap) { + posToNameMap[namePos.second] = namePos.first; + } + + // std::map is sorted by key, so attributes can now be inserted in position order + + for (const auto& posName : posToNameMap) { + attrs.emplace_back(posName.second, this->type(posName.first)); + } +} + +bool +AttributeSet::Descriptor::hasGroup(const Name& group) const +{ + return mGroupMap.find(group) != mGroupMap.end(); +} + +void +AttributeSet::Descriptor::setGroup(const Name& group, const size_t offset) +{ + if (!validName(group)) throw RuntimeError("Group name contains invalid characters - " + group); + + mGroupMap[group] = offset; +} + +void +AttributeSet::Descriptor::dropGroup(const Name& group) +{ + mGroupMap.erase(group); +} + +void +AttributeSet::Descriptor::clearGroups() +{ + mGroupMap.clear(); +} + +const Name +AttributeSet::Descriptor::uniqueName(const Name& name) const +{ + auto it = mNameMap.find(name); + if (it == mNameMap.end()) return name; + + std::ostringstream ss; + size_t i(0); + while (it != mNameMap.end()) { + ss.str(""); + ss << name << i++; + it = mNameMap.find(ss.str()); + } + return ss.str(); +} + +const Name +AttributeSet::Descriptor::uniqueGroupName(const Name& name) const +{ + auto it = mGroupMap.find(name); + if (it == mGroupMap.end()) return name; + + std::ostringstream ss; + size_t i(0); + while (it != mGroupMap.end()) { + ss.str(""); + ss << name << i++; + it = mGroupMap.find(ss.str()); + } + return ss.str(); +} + +size_t +AttributeSet::Descriptor::groupOffset(const Name& group) const +{ + const auto it = mGroupMap.find(group); + if (it == mGroupMap.end()) { + return INVALID_POS; + } + return it->second; +} + +size_t +AttributeSet::Descriptor::groupOffset(const Util::GroupIndex& index) const +{ + if (index.first >= mNameMap.size()) { + OPENVDB_THROW(LookupError, "Out of range group index.") + } + + if (mTypes[index.first] != GroupAttributeArray::attributeType()) { + OPENVDB_THROW(LookupError, "Group index invalid.") + } + + // find the relative index in the group attribute arrays + + size_t relativeIndex = 0; + for (const auto& namePos : mNameMap) { + if (namePos.second < index.first && + mTypes[namePos.second] == GroupAttributeArray::attributeType()) { + relativeIndex++; + } + } + + const size_t GROUP_BITS = sizeof(GroupType) * CHAR_BIT; + + return (relativeIndex * GROUP_BITS) + index.second; +} + +AttributeSet::Descriptor::GroupIndex +AttributeSet::Descriptor::groupIndex(const Name& group) const +{ + const size_t offset = this->groupOffset(group); + if (offset == INVALID_POS) { + OPENVDB_THROW(LookupError, "Group not found - " << group << ".") + } + return this->groupIndex(offset); +} + + +AttributeSet::Descriptor::GroupIndex +AttributeSet::Descriptor::groupIndex(const size_t offset) const +{ + // extract all attribute array group indices + + const size_t GROUP_BITS = sizeof(GroupType) * CHAR_BIT; + + std::vector groups; + for (const auto& namePos : mNameMap) { + if (mTypes[namePos.second] == GroupAttributeArray::attributeType()) { + groups.push_back(namePos.second); + } + } + + if (offset >= groups.size() * GROUP_BITS) { + OPENVDB_THROW(LookupError, "Out of range group offset - " << offset << ".") + } + + // adjust relative offset to find offset into the array vector + + std::sort(groups.begin(), groups.end()); + return Util::GroupIndex(groups[offset / GROUP_BITS], + static_cast(offset % GROUP_BITS)); +} + +bool +AttributeSet::Descriptor::validName(const Name& name) +{ + if (name.empty()) return false; + return std::find_if(name.begin(), name.end(), + [&](int c) { return !(isalnum(c) || (c == '_') || (c == '|') || (c == ':')); } ) == name.end(); +} + +void +AttributeSet::Descriptor::parseNames( std::vector& includeNames, + std::vector& excludeNames, + bool& includeAll, + const std::string& nameStr) +{ + includeAll = false; + + std::stringstream tokenStream(nameStr); + + Name token; + while (tokenStream >> token) { + + bool negate = startsWith(token, "^") || startsWith(token, "!"); + + if (negate) { + if (token.length() < 2) throw RuntimeError("Negate character (^) must prefix a name."); + token = token.substr(1, token.length()-1); + if (!validName(token)) throw RuntimeError("Name contains invalid characters - " + token); + excludeNames.push_back(token); + } + else if (!includeAll) { + if (token == "*") { + includeAll = true; + includeNames.clear(); + continue; + } + if (!validName(token)) throw RuntimeError("Name contains invalid characters - " + token); + includeNames.push_back(token); + } + } +} + +void +AttributeSet::Descriptor::parseNames( std::vector& includeNames, + std::vector& excludeNames, + const std::string& nameStr) +{ + bool includeAll = false; + Descriptor::parseNames(includeNames, excludeNames, includeAll, nameStr); +} + +void +AttributeSet::Descriptor::write(std::ostream& os) const +{ + const Index64 arraylength = Index64(mTypes.size()); + os.write(reinterpret_cast(&arraylength), sizeof(Index64)); + + for (const NamePair& np : mTypes) { + writeString(os, np.first); + writeString(os, np.second); + } + + for (auto it = mNameMap.begin(), endIt = mNameMap.end(); it != endIt; ++it) { + writeString(os, it->first); + os.write(reinterpret_cast(&it->second), sizeof(Index64)); + } + + const Index64 grouplength = Index64(mGroupMap.size()); + os.write(reinterpret_cast(&grouplength), sizeof(Index64)); + + for (auto groupIt = mGroupMap.cbegin(), endGroupIt = mGroupMap.cend(); groupIt != endGroupIt; ++groupIt) { + writeString(os, groupIt->first); + os.write(reinterpret_cast(&groupIt->second), sizeof(Index64)); + } + + mMetadata.writeMeta(os); +} + + +void +AttributeSet::Descriptor::read(std::istream& is) +{ + Index64 arraylength = 0; + is.read(reinterpret_cast(&arraylength), sizeof(Index64)); + + std::vector(size_t(arraylength)).swap(mTypes); + + for (NamePair& np : mTypes) { + np.first = readString(is); + np.second = readString(is); + } + + mNameMap.clear(); + std::pair nameAndOffset; + + for (Index64 n = 0; n < arraylength; ++n) { + nameAndOffset.first = readString(is); + if (!validName(nameAndOffset.first)) throw IoError("Attribute name contains invalid characters - " + nameAndOffset.first); + is.read(reinterpret_cast(&nameAndOffset.second), sizeof(Index64)); + mNameMap.insert(nameAndOffset); + } + + Index64 grouplength = 0; + is.read(reinterpret_cast(&grouplength), sizeof(Index64)); + + for (Index64 n = 0; n < grouplength; ++n) { + nameAndOffset.first = readString(is); + if (!validName(nameAndOffset.first)) throw IoError("Group name contains invalid characters - " + nameAndOffset.first); + is.read(reinterpret_cast(&nameAndOffset.second), sizeof(Index64)); + mGroupMap.insert(nameAndOffset); + } + + mMetadata.readMeta(is); +} + + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/points/AttributeSet.h b/openvdb/points/AttributeSet.h new file mode 100644 index 00000000..dc8ba450 --- /dev/null +++ b/openvdb/points/AttributeSet.h @@ -0,0 +1,465 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/AttributeSet.h +/// +/// @authors Dan Bailey, Mihai Alden +/// +/// @brief Set of Attribute Arrays which tracks metadata about each array. + +#ifndef OPENVDB_POINTS_ATTRIBUTE_SET_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_ATTRIBUTE_SET_HAS_BEEN_INCLUDED + +#include "AttributeArray.h" +#include +#include + +#include +#include +#include + + +class TestAttributeSet; + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +//////////////////////////////////////// + + +/// Ordered collection of uniquely-named attribute arrays +class OPENVDB_API AttributeSet +{ +public: + enum { INVALID_POS = std::numeric_limits::max() }; + + using Ptr = std::shared_ptr; + using ConstPtr = std::shared_ptr; + + class Descriptor; + + using DescriptorPtr = std::shared_ptr; + using DescriptorConstPtr = std::shared_ptr; + + ////////// + + struct Util + { + /// Attribute and type name pair. + struct NameAndType { + NameAndType(const std::string& n, const NamePair& t, const Index s = 1) + : name(n), type(t), stride(s) {} + Name name; + NamePair type; + Index stride; + }; + + using NameAndTypeVec = std::vector; + using NameToPosMap = std::map; + using GroupIndex = std::pair; + }; + + ////////// + + AttributeSet(); + + /// Construct a new AttributeSet from the given AttributeSet. + /// @param attributeSet the old attribute set + /// @param arrayLength the desired length of the arrays in the new AttributeSet + /// @param lock an optional scoped registry lock to avoid contention + /// @note This constructor is typically used to resize an existing AttributeSet as + /// it transfers attribute metadata such as hidden and transient flags + AttributeSet(const AttributeSet& attributeSet, Index arrayLength, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + + /// Construct a new AttributeSet from the given Descriptor. + /// @param descriptor stored in the new AttributeSet and used in construction + /// @param arrayLength the desired length of the arrays in the new AttributeSet + /// @param lock an optional scoped registry lock to avoid contention + /// @note Descriptors do not store attribute metadata such as hidden and transient flags + /// which live on the AttributeArrays, so for constructing from an existing AttributeSet + /// use the AttributeSet(const AttributeSet&, Index) constructor instead + AttributeSet(const DescriptorPtr& descriptor, Index arrayLength = 1, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + + /// Shallow copy constructor, the descriptor and attribute arrays will be shared. + AttributeSet(const AttributeSet&); + + /// Disallow copy assignment, since it wouldn't be obvious whether the copy is deep or shallow. + AttributeSet& operator=(const AttributeSet&) = delete; + + //@{ + /// @brief Return a reference to this attribute set's descriptor, which might + /// be shared with other sets. + Descriptor& descriptor() { return *mDescr; } + const Descriptor& descriptor() const { return *mDescr; } + //@} + + /// @brief Return a pointer to this attribute set's descriptor, which might be + /// shared with other sets + DescriptorPtr descriptorPtr() const { return mDescr; } + + /// Return the number of attributes in this set. + size_t size() const { return mAttrs.size(); } + + /// Return the number of bytes of memory used by this attribute set. + size_t memUsage() const; + + /// @brief Return the position of the attribute array whose name is @a name, + /// or @c INVALID_POS if no match is found. + size_t find(const std::string& name) const; + + /// @brief Replace the attribute array whose name is @a name. + /// @return The position of the updated attribute array or @c INVALID_POS + /// if the given name does not exist or if the replacement failed because + /// the new array type does not comply with the descriptor. + size_t replace(const std::string& name, const AttributeArray::Ptr&); + + /// @brief Replace the attribute array stored at position @a pos in this container. + /// @return The position of the updated attribute array or @c INVALID_POS + /// if replacement failed because the new array type does not comply with + /// the descriptor. + size_t replace(size_t pos, const AttributeArray::Ptr&); + + //@{ + /// @brief Return a pointer to the attribute array whose name is @a name or + /// a null pointer if no match is found. + const AttributeArray* getConst(const std::string& name) const; + const AttributeArray* get(const std::string& name) const; + AttributeArray* get(const std::string& name); + //@} + + //@{ + /// @brief Return a pointer to the attribute array stored at position @a pos + /// in this set. + const AttributeArray* getConst(size_t pos) const; + const AttributeArray* get(size_t pos) const; + AttributeArray* get(size_t pos); + //@} + + //@{ + /// @brief Return the group offset from the name or index of the group + /// A group attribute array is a single byte (8-bit), each bit of which + /// can denote a group. The group offset is the position of the bit that + /// denotes the requested group if all group attribute arrays in the set + /// (and only attribute arrays marked as group) were to be laid out linearly + /// according to their order in the set. + size_t groupOffset(const Name& groupName) const; + size_t groupOffset(const Util::GroupIndex& index) const; + //@} + + /// Return the group index from the name of the group + Util::GroupIndex groupIndex(const Name& groupName) const; + /// Return the group index from the offset of the group + /// @note see offset description for groupOffset() + Util::GroupIndex groupIndex(const size_t offset) const; + + /// Return true if the attribute array stored at position @a pos is shared. + bool isShared(size_t pos) const; + /// @brief If the attribute array stored at position @a pos is shared, + /// replace the array with a deep copy of itself that is not + /// shared with anyone else. + void makeUnique(size_t pos); + + /// Append attribute @a attribute (simple method) + AttributeArray::Ptr appendAttribute(const Name& name, + const NamePair& type, + const Index strideOrTotalSize = 1, + const bool constantStride = true, + Metadata::Ptr defaultValue = Metadata::Ptr()); + + /// Append attribute @a attribute (descriptor-sharing) + /// Requires current descriptor to match @a expected + /// On append, current descriptor is replaced with @a replacement + /// Provide a @a lock object to avoid contention from appending in parallel + AttributeArray::Ptr appendAttribute(const Descriptor& expected, DescriptorPtr& replacement, + const size_t pos, const Index strideOrTotalSize = 1, + const bool constantStride = true, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + + /// Drop attributes with @a pos indices (simple method) + /// Creates a new descriptor for this attribute set + void dropAttributes(const std::vector& pos); + + /// Drop attributes with @a pos indices (descriptor-sharing method) + /// Requires current descriptor to match @a expected + /// On drop, current descriptor is replaced with @a replacement + void dropAttributes(const std::vector& pos, + const Descriptor& expected, DescriptorPtr& replacement); + + /// Re-name attributes in set to match a provided descriptor + /// Replaces own descriptor with @a replacement + void renameAttributes(const Descriptor& expected, const DescriptorPtr& replacement); + + /// Re order attribute set to match a provided descriptor + /// Replaces own descriptor with @a replacement + void reorderAttributes(const DescriptorPtr& replacement); + + /// Replace the current descriptor with a @a replacement + /// Note the provided Descriptor must be identical to the replacement + /// unless @a allowMismatchingDescriptors is true (default is false) + void resetDescriptor(const DescriptorPtr& replacement, const bool allowMismatchingDescriptors = false); + + /// Read the entire set from a stream. + void read(std::istream&); + /// Write the entire set to a stream. + /// @param outputTransient if true, write out transient attributes + void write(std::ostream&, bool outputTransient = false) const; + + /// This will read the attribute descriptor from a stream. + void readDescriptor(std::istream&); + /// This will write the attribute descriptor to a stream. + /// @param outputTransient if true, write out transient attributes + void writeDescriptor(std::ostream&, bool outputTransient = false) const; + + /// This will read the attribute metadata from a stream. + void readMetadata(std::istream&); + /// This will write the attribute metadata to a stream. + /// @param outputTransient if true, write out transient attributes + /// @param paged if true, data is written out in pages + void writeMetadata(std::ostream&, bool outputTransient = false, bool paged = false) const; + + /// This will read the attribute data from a stream. + void readAttributes(std::istream&); + /// This will write the attribute data to a stream. + /// @param outputTransient if true, write out transient attributes + void writeAttributes(std::ostream&, bool outputTransient = false) const; + + /// Compare the descriptors and attribute arrays on the attribute sets + /// Exit early if the descriptors do not match + bool operator==(const AttributeSet& other) const; + bool operator!=(const AttributeSet& other) const { return !this->operator==(other); } + +private: + using AttrArrayVec = std::vector; + + DescriptorPtr mDescr; + AttrArrayVec mAttrs; +}; // class AttributeSet + +//////////////////////////////////////// + + +/// A container for ABI=5 to help ease introduction of upcoming features +#if OPENVDB_ABI_VERSION_NUMBER >= 5 +namespace future { + class Container + { + class Element { }; + std::vector> mElements; + }; +} +#endif + + +//////////////////////////////////////// + + +/// @brief An immutable object that stores name, type and AttributeSet position +/// for a constant collection of attribute arrays. +/// @note The attribute name is actually mutable, but the attribute type +/// and position can not be changed after creation. +class OPENVDB_API AttributeSet::Descriptor +{ +public: + using Ptr = std::shared_ptr; + + using NameAndType = Util::NameAndType; + using NameAndTypeVec = Util::NameAndTypeVec; + using GroupIndex = Util::GroupIndex; + using NameToPosMap = Util::NameToPosMap; + using ConstIterator = NameToPosMap::const_iterator; + + /// Utility method to construct a NameAndType sequence. + struct Inserter { + NameAndTypeVec vec; + Inserter& add(const NameAndType& nameAndType) { + vec.push_back(nameAndType); return *this; + } + Inserter& add(const Name& name, const NamePair& type) { + vec.emplace_back(name, type); return *this; + } + Inserter& add(const NameAndTypeVec& other) { + for (NameAndTypeVec::const_iterator it = other.begin(), itEnd = other.end(); it != itEnd; ++it) { + vec.emplace_back(it->name, it->type); + } + return *this; + } + }; + + ////////// + + Descriptor(); + + /// Copy constructor + Descriptor(const Descriptor&); + + /// Create a new descriptor from a position attribute type and assumes "P" (for convenience). + static Ptr create(const NamePair&); + + /// Create a new descriptor as a duplicate with a new attribute appended + Ptr duplicateAppend(const Name& name, const NamePair& type) const; + + /// Create a new descriptor as a duplicate with existing attributes dropped + Ptr duplicateDrop(const std::vector& pos) const; + + /// Return the number of attributes in this descriptor. + size_t size() const { return mTypes.size(); } + + /// Return the number of attributes with this attribute type + size_t count(const NamePair& type) const; + + /// Return the number of bytes of memory used by this attribute set. + size_t memUsage() const; + + /// @brief Return the position of the attribute array whose name is @a name, + /// or @c INVALID_POS if no match is found. + size_t find(const std::string& name) const; + + /// Rename an attribute array + size_t rename(const std::string& fromName, const std::string& toName); + + /// Return the name of the attribute array's type. + const Name& valueType(size_t pos) const; + /// Return the name of the attribute array's type. + const NamePair& type(size_t pos) const; + + /// Retrieve metadata map + MetaMap& getMetadata(); + const MetaMap& getMetadata() const; + + /// Return true if the attribute has a default value + bool hasDefaultValue(const Name& name) const; + /// Get a default value for an existing attribute + template + ValueType getDefaultValue(const Name& name) const + { + const size_t pos = find(name); + if (pos == INVALID_POS) { + OPENVDB_THROW(LookupError, "Cannot find attribute name to set default value.") + } + + std::stringstream ss; + ss << "default:" << name; + + auto metadata = mMetadata.getMetadata>(ss.str()); + + if (metadata) return metadata->value(); + + return zeroVal(); + } + /// Set a default value for an existing attribute + void setDefaultValue(const Name& name, const Metadata& defaultValue); + // Remove the default value if it exists + void removeDefaultValue(const Name& name); + // Prune any default values for which the key is no longer present + void pruneUnusedDefaultValues(); + + /// Return true if this descriptor is equal to the given one. + bool operator==(const Descriptor&) const; + /// Return true if this descriptor is not equal to the given one. + bool operator!=(const Descriptor& rhs) const { return !this->operator==(rhs); } + /// Return true if this descriptor contains the same attributes + /// as the given descriptor, ignoring attribute order + bool hasSameAttributes(const Descriptor& rhs) const; + + /// Return a reference to the name-to-position map. + const NameToPosMap& map() const { return mNameMap; } + /// Return a reference to the name-to-position group map. + const NameToPosMap& groupMap() const { return mGroupMap; } + + /// Return @c true if group exists + bool hasGroup(const Name& group) const; + /// Define a group name to offset mapping + void setGroup(const Name& group, const size_t offset); + /// Drop any mapping keyed by group name + void dropGroup(const Name& group); + /// Clear all groups + void clearGroups(); + /// Rename a group + size_t renameGroup(const std::string& fromName, const std::string& toName); + /// Return a unique name for a group based on given name + const Name uniqueGroupName(const Name& name) const; + + //@{ + /// @brief Return the group offset from the name or index of the group + /// A group attribute array is a single byte (8-bit), each bit of which + /// can denote a group. The group offset is the position of the bit that + /// denotes the requested group if all group attribute arrays in the set + /// (and only attribute arrays marked as group) were to be laid out linearly + /// according to their order in the set. + size_t groupOffset(const Name& groupName) const; + size_t groupOffset(const GroupIndex& index) const; + //@} + + /// Return the group index from the name of the group + GroupIndex groupIndex(const Name& groupName) const; + /// Return the group index from the offset of the group + /// @note see offset description for groupOffset() + GroupIndex groupIndex(const size_t offset) const; + + /// Return a unique name for an attribute array based on given name + const Name uniqueName(const Name& name) const; + + /// Return true if the name is valid + static bool validName(const Name& name); + + /// @brief Extract each name from @a nameStr into @a includeNames, or into @a excludeNames + /// if the name is prefixed with a caret. + /// @param nameStr the input string of names + /// @param includeNames on exit, the list of names that are not prefixed with a caret + /// @param excludeNames on exit, the list of names that are prefixed with a caret + /// @param includeAll on exit, @c true if a "*" wildcard is present in the @a includeNames + static void parseNames( std::vector& includeNames, + std::vector& excludeNames, + bool& includeAll, + const std::string& nameStr); + + /// @brief Extract each name from @a nameStr into @a includeNames, or into @a excludeNames + /// if the name is prefixed with a caret. + static void parseNames( std::vector& includeNames, + std::vector& excludeNames, + const std::string& nameStr); + + /// Serialize this descriptor to the given stream. + void write(std::ostream&) const; + /// Unserialize this transform from the given stream. + void read(std::istream&); + +protected: + /// Append to a vector of names and types from this Descriptor in position order + void appendTo(NameAndTypeVec& attrs) const; + + /// Create a new descriptor from the given attribute and type name pairs + /// and copy the group maps and metamap. + static Ptr create(const NameAndTypeVec&, const NameToPosMap&, const MetaMap&); + + size_t insert(const std::string& name, const NamePair& typeName); + +private: + friend class ::TestAttributeSet; + + NameToPosMap mNameMap; + std::vector mTypes; + NameToPosMap mGroupMap; + MetaMap mMetadata; +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + // as this change is part of an ABI change, there's no good reason to reduce the reserved + // space aside from keeping the memory size of an AttributeSet the same for convenience + // (note that this assumes a typical three-pointer implementation for std::vector) + future::Container mFutureContainer; // occupies 3 reserved slots + int64_t mReserved[5]; // for future use +#else + int64_t mReserved[8]; // for future use +#endif +}; // class Descriptor + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_ATTRIBUTE_ARRAY_HAS_BEEN_INCLUDED diff --git a/openvdb/points/IndexFilter.h b/openvdb/points/IndexFilter.h new file mode 100644 index 00000000..b2ab9f50 --- /dev/null +++ b/openvdb/points/IndexFilter.h @@ -0,0 +1,581 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/IndexFilter.h +/// +/// @author Dan Bailey +/// +/// @brief Index filters primarily designed to be used with a FilterIndexIter. +/// +/// Filters must adhere to the interface described in the example below: +/// @code +/// struct MyFilter +/// { +/// // Return true when the filter has been initialized for first use +/// bool initialized() { return true; } +/// +/// // Return index::ALL if all points are valid, index::NONE if no points are valid +/// // and index::PARTIAL if some points are valid +/// index::State state() { return index::PARTIAL; } +/// +/// // Return index::ALL if all points in this leaf are valid, index::NONE if no points +/// // in this leaf are valid and index::PARTIAL if some points in this leaf are valid +/// template +/// index::State state(const LeafT&) { return index::PARTIAL; } +/// +/// // Resets the filter to refer to the specified leaf, all subsequent valid() calls +/// // will be relative to this leaf until reset() is called with a different leaf. +/// // Although a required method, many filters will provide an empty implementation if +/// // there is no leaf-specific logic needed. +/// template void reset(const LeafT&) { } +/// +/// // Returns true if the filter is valid for the supplied iterator +/// template bool valid(const IterT&) { return true; } +/// }; +/// @endcode + +#ifndef OPENVDB_POINTS_INDEX_FILTER_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_INDEX_FILTER_HAS_BEEN_INCLUDED + +#include +#include + +#include +#include + +#include "IndexIterator.h" +#include "AttributeArray.h" +#include "AttributeGroup.h" +#include "AttributeSet.h" + +#include // std::mt19937 +#include // std::iota +#include + + +class TestIndexFilter; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +//////////////////////////////////////// + + + +namespace index_filter_internal { + + +// generate a random subset of n indices from the range [0:m] +template +std::vector +generateRandomSubset(const unsigned int seed, const IntType n, const IntType m) +{ + if (n <= 0) return std::vector(); + + // fill vector with ascending indices + std::vector values(m); + std::iota(values.begin(), values.end(), 0); + if (n >= m) return values; + + // shuffle indices using random generator + + RandGenT randGen(seed); + std::shuffle(values.begin(), values.end(), randGen); + + // resize the container to n elements + values.resize(n); + + // sort the subset of the indices vector that will be used + std::sort(values.begin(), values.end()); + + return values; +} + + +} // namespace index_filter_internal + + +/// Index filtering on active / inactive state of host voxel +template +class ValueMaskFilter +{ +public: + static bool initialized() { return true; } + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT& leaf) + { + if (leaf.isDense()) return On ? index::ALL : index::NONE; + else if (leaf.isEmpty()) return On ? index::NONE : index::ALL; + return index::PARTIAL; + } + + template + void reset(const LeafT&) { } + + template + bool valid(const IterT& iter) const + { + const bool valueOn = iter.isValueOn(); + return On ? valueOn : !valueOn; + } +}; + + +using ActiveFilter = ValueMaskFilter; +using InactiveFilter = ValueMaskFilter; + + +/// Index filtering on multiple group membership for inclusion and exclusion +/// +/// @note include filters are applied first, then exclude filters +class MultiGroupFilter +{ +public: + using NameVector = std::vector; + using IndexVector = std::vector; + using HandleVector = std::vector; + +private: + static IndexVector namesToIndices(const AttributeSet& attributeSet, const NameVector& names) { + IndexVector indices; + for (const auto& name : names) { + try { + indices.emplace_back(attributeSet.groupIndex(name)); + } catch (LookupError&) { + // silently drop group names that don't exist + } + } + return indices; + } + +public: + MultiGroupFilter( const NameVector& include, + const NameVector& exclude, + const AttributeSet& attributeSet) + : mInclude(MultiGroupFilter::namesToIndices(attributeSet, include)) + , mExclude(MultiGroupFilter::namesToIndices(attributeSet, exclude)) { } + + MultiGroupFilter( const IndexVector& include, + const IndexVector& exclude) + : mInclude(include) + , mExclude(exclude) { } + + MultiGroupFilter( const MultiGroupFilter& filter) + : mInclude(filter.mInclude) + , mExclude(filter.mExclude) + , mIncludeHandles(filter.mIncludeHandles) + , mExcludeHandles(filter.mExcludeHandles) + , mInitialized(filter.mInitialized) { } + + inline bool initialized() const { return mInitialized; } + + inline index::State state() const + { + return (mInclude.empty() && mExclude.empty()) ? index::ALL : index::PARTIAL; + } + + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + mIncludeHandles.clear(); + mExcludeHandles.clear(); + for (const auto& i : mInclude) { + mIncludeHandles.emplace_back(leaf.groupHandle(i)); + } + for (const auto& i : mExclude) { + mExcludeHandles.emplace_back(leaf.groupHandle(i)); + } + mInitialized = true; + } + + template + bool valid(const IterT& iter) const { + assert(mInitialized); + // accept no include filters as valid + bool includeValid = mIncludeHandles.empty(); + for (const GroupHandle& handle : mIncludeHandles) { + if (handle.getUnsafe(*iter)) { + includeValid = true; + break; + } + } + if (!includeValid) return false; + for (const GroupHandle& handle : mExcludeHandles) { + if (handle.getUnsafe(*iter)) return false; + } + return true; + } + +private: + IndexVector mInclude; + IndexVector mExclude; + HandleVector mIncludeHandles; + HandleVector mExcludeHandles; + bool mInitialized = false; +}; // class MultiGroupFilter + + +// Random index filtering per leaf +template +class RandomLeafFilter +{ +public: + using SeedCountPair = std::pair; + using LeafMap = std::unordered_map; + + RandomLeafFilter( const PointDataTreeT& tree, + const Index64 targetPoints, + const unsigned int seed = 0) { + Index64 currentPoints = 0; + for (auto iter = tree.cbeginLeaf(); iter; ++iter) { + currentPoints += iter->pointCount(); + } + + const float factor = targetPoints > currentPoints ? 1.0f : float(targetPoints) / float(currentPoints); + + std::mt19937 generator(seed); + std::uniform_int_distribution dist(0, std::numeric_limits::max() - 1); + + Index32 leafCounter = 0; + float totalPointsFloat = 0.0f; + int totalPoints = 0; + for (auto iter = tree.cbeginLeaf(); iter; ++iter) { + // for the last leaf - use the remaining points to reach the target points + if (leafCounter + 1 == tree.leafCount()) { + const int leafPoints = static_cast(targetPoints) - totalPoints; + mLeafMap[iter->origin()] = SeedCountPair(dist(generator), leafPoints); + break; + } + totalPointsFloat += factor * static_cast(iter->pointCount()); + const auto leafPoints = static_cast(math::Floor(totalPointsFloat)); + totalPointsFloat -= static_cast(leafPoints); + totalPoints += leafPoints; + + mLeafMap[iter->origin()] = SeedCountPair(dist(generator), leafPoints); + + leafCounter++; + } + } + + inline bool initialized() const { return mNextIndex == -1; } + + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + using index_filter_internal::generateRandomSubset; + + auto it = mLeafMap.find(leaf.origin()); + if (it == mLeafMap.end()) { + OPENVDB_THROW(openvdb::KeyError, + "Cannot find leaf origin in map for random filter - " << leaf.origin()); + } + + const SeedCountPair& value = it->second; + const unsigned int seed = static_cast(value.first); + const auto total = static_cast(leaf.pointCount()); + mCount = std::min(value.second, total); + + mIndices = generateRandomSubset(seed, mCount, total); + + mSubsetOffset = -1; + mNextIndex = -1; + } + + inline void next() const { + mSubsetOffset++; + mNextIndex = mSubsetOffset >= mCount ? + std::numeric_limits::max() : + mIndices[mSubsetOffset]; + } + + template + bool valid(const IterT& iter) const { + const int index = *iter; + while (mNextIndex < index) this->next(); + return mNextIndex == index; + } + +protected: + friend class ::TestIndexFilter; + +private: + LeafMap mLeafMap; + std::vector mIndices; + int mCount = 0; + mutable int mSubsetOffset = -1; + mutable int mNextIndex = -1; +}; // class RandomLeafFilter + + +// Hash attribute value for deterministic, but approximate filtering +template +class AttributeHashFilter +{ +public: + using Handle = AttributeHandle; + + AttributeHashFilter(const size_t index, + const double percentage, + const unsigned int seed = 0) + : mIndex(index) + , mFactor(percentage / 100.0) + , mSeed(seed) { } + + AttributeHashFilter(const AttributeHashFilter& filter) + : mIndex(filter.mIndex) + , mFactor(filter.mFactor) + , mSeed(filter.mSeed) + { + if (filter.mIdHandle) mIdHandle.reset(new Handle(*filter.mIdHandle)); + } + + inline bool initialized() const { return bool(mIdHandle); } + + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + assert(leaf.hasAttribute(mIndex)); + mIdHandle.reset(new Handle(leaf.constAttributeArray(mIndex))); + } + + template + bool valid(const IterT& iter) const { + assert(mIdHandle); + const IntType id = mIdHandle->get(*iter); + const unsigned int seed = mSeed + static_cast(id); + RandGenT generator(seed); + std::uniform_real_distribution dist(0.0, 1.0); + return dist(generator) < mFactor; + } + +private: + const size_t mIndex; + const double mFactor; + const unsigned int mSeed; + typename Handle::UniquePtr mIdHandle; +}; // class AttributeHashFilter + + +template +class LevelSetFilter +{ +public: + using ValueT = typename LevelSetGridT::ValueType; + using Handle = AttributeHandle; + + LevelSetFilter( const LevelSetGridT& grid, + const math::Transform& transform, + const ValueT min, + const ValueT max) + : mAccessor(grid.getConstAccessor()) + , mLevelSetTransform(grid.transform()) + , mTransform(transform) + , mMin(min) + , mMax(max) { } + + LevelSetFilter(const LevelSetFilter& filter) + : mAccessor(filter.mAccessor) + , mLevelSetTransform(filter.mLevelSetTransform) + , mTransform(filter.mTransform) + , mMin(filter.mMin) + , mMax(filter.mMax) + { + if (filter.mPositionHandle) mPositionHandle.reset(new Handle(*filter.mPositionHandle)); + } + + inline bool initialized() const { return bool(mPositionHandle); } + + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + mPositionHandle.reset(new Handle(leaf.constAttributeArray("P"))); + } + + template + bool valid(const IterT& iter) const { + assert(mPositionHandle); + assert(iter); + + const openvdb::Coord ijk = iter.getCoord(); + const openvdb::Vec3f voxelIndexSpace = ijk.asVec3d(); + + // Retrieve point position in voxel space + const openvdb::Vec3f& pointVoxelSpace = mPositionHandle->get(*iter); + + // Compute point position in index space + const openvdb::Vec3f pointWorldSpace = mTransform.indexToWorld(pointVoxelSpace + voxelIndexSpace); + const openvdb::Vec3f pointIndexSpace = mLevelSetTransform.worldToIndex(pointWorldSpace); + + // Perform level-set sampling + const typename LevelSetGridT::ValueType value = tools::BoxSampler::sample(mAccessor, pointIndexSpace); + + // if min is greater than max, we invert so that values are valid outside of the range (not inside) + const bool invert = mMin > mMax; + + return invert ? (value < mMax || value > mMin) : (value < mMax && value > mMin); + } + +private: + // not a reference to ensure const-accessor is unique per-thread + const typename LevelSetGridT::ConstAccessor mAccessor; + const math::Transform& mLevelSetTransform; + const math::Transform& mTransform; + const ValueT mMin; + const ValueT mMax; + Handle::UniquePtr mPositionHandle; +}; // class LevelSetFilter + + +// BBox index filtering +class BBoxFilter +{ +public: + using Handle = AttributeHandle; + + BBoxFilter(const openvdb::math::Transform& transform, + const openvdb::BBoxd& bboxWS) + : mTransform(transform) + , mBbox(transform.worldToIndex(bboxWS)) { } + + BBoxFilter(const BBoxFilter& filter) + : mTransform(filter.mTransform) + , mBbox(filter.mBbox) + { + if (filter.mPositionHandle) mPositionHandle.reset(new Handle(*filter.mPositionHandle)); + } + + inline bool initialized() const { return bool(mPositionHandle); } + + inline index::State state() const + { + return mBbox.empty() ? index::NONE : index::PARTIAL; + } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT& leaf) { + mPositionHandle.reset(new Handle(leaf.constAttributeArray("P"))); + } + + template + bool valid(const IterT& iter) const { + assert(mPositionHandle); + + const openvdb::Coord ijk = iter.getCoord(); + const openvdb::Vec3f voxelIndexSpace = ijk.asVec3d(); + + // Retrieve point position in voxel space + const openvdb::Vec3f& pointVoxelSpace = mPositionHandle->get(*iter); + + // Compute point position in index space + const openvdb::Vec3f pointIndexSpace = pointVoxelSpace + voxelIndexSpace; + + return mBbox.isInside(pointIndexSpace); + } + +private: + const openvdb::math::Transform& mTransform; + const openvdb::BBoxd mBbox; + Handle::UniquePtr mPositionHandle; +}; // class BBoxFilter + + +// Index filtering based on evaluating both sub-filters +template +class BinaryFilter +{ +public: + BinaryFilter( const T1& filter1, + const T2& filter2) + : mFilter1(filter1) + , mFilter2(filter2) { } + + inline bool initialized() const { return mFilter1.initialized() && mFilter2.initialized(); } + + inline index::State state() const + { + return this->computeState(mFilter1.state(), mFilter2.state()); + } + template + inline index::State state(const LeafT& leaf) const + { + return this->computeState(mFilter1.state(leaf), mFilter2.state(leaf)); + } + + template + void reset(const LeafT& leaf) { + mFilter1.reset(leaf); + mFilter2.reset(leaf); + } + + template + bool valid(const IterT& iter) const { + if (And) return mFilter1.valid(iter) && mFilter2.valid(iter); + return mFilter1.valid(iter) || mFilter2.valid(iter); + } + +private: + inline index::State computeState( index::State state1, + index::State state2) const + { + if (And) { + if (state1 == index::NONE || state2 == index::NONE) return index::NONE; + else if (state1 == index::ALL && state2 == index::ALL) return index::ALL; + } else { + if (state1 == index::NONE && state2 == index::NONE) return index::NONE; + else if (state1 == index::ALL && state2 == index::ALL) return index::ALL; + } + return index::PARTIAL; + } + + T1 mFilter1; + T2 mFilter2; +}; // class BinaryFilter + + +//////////////////////////////////////// + + +template +struct FilterTraits { + static const bool RequiresCoord = false; +}; +template<> +struct FilterTraits { + static const bool RequiresCoord = true; +}; +template +struct FilterTraits> { + static const bool RequiresCoord = true; +}; +template +struct FilterTraits> { + static const bool RequiresCoord = FilterTraits::RequiresCoord || + FilterTraits::RequiresCoord; +}; + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_INDEX_FILTER_HAS_BEEN_INCLUDED diff --git a/openvdb/points/IndexIterator.h b/openvdb/points/IndexIterator.h new file mode 100644 index 00000000..99ca1dd9 --- /dev/null +++ b/openvdb/points/IndexIterator.h @@ -0,0 +1,329 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/IndexIterator.h +/// +/// @author Dan Bailey +/// +/// @brief Index Iterators. + +#ifndef OPENVDB_POINTS_INDEX_ITERATOR_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_INDEX_ITERATOR_HAS_BEEN_INCLUDED + +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Count up the number of times the iterator can iterate +/// +/// @param iter the iterator. +/// +/// @note counting by iteration only performed where a dynamic filter is in use, +template +inline Index64 iterCount(const IterT& iter); + + +//////////////////////////////////////// + + +namespace index { +// Enum for informing early-exit optimizations +// PARTIAL - No optimizations are possible +// NONE - No indices to evaluate, can skip computation +// ALL - All indices to evaluate, can skip filtering +enum State +{ + PARTIAL=0, + NONE, + ALL +}; +} + + +/// @brief A no-op filter that can be used when iterating over all indices +/// @see points/IndexFilter.h for the documented interface for an index filter +class NullFilter +{ +public: + static bool initialized() { return true; } + static index::State state() { return index::ALL; } + template + static index::State state(const LeafT&) { return index::ALL; } + + template void reset(const LeafT&) { } + template static bool valid(const IterT&) { return true; } +}; // class NullFilter + + +/// @brief A forward iterator over array indices in a single voxel +class ValueVoxelCIter +{ +public: + struct Parent + { + Parent() = default; + explicit Parent(Index32 offset): mOffset(offset) { } + Index32 getValue(unsigned /*offset*/) const { return mOffset; } + private: + Index32 mOffset = 0; + }; // struct Parent + + using NodeType = Parent; + + ValueVoxelCIter() = default; + ValueVoxelCIter(Index32 prevOffset, Index32 offset) + : mOffset(offset), mParent(prevOffset) {} + ValueVoxelCIter(const ValueVoxelCIter& other) + : mOffset(other.mOffset), mParent(other.mParent), mValid(other.mValid) {} + + /// @brief Return the item to which this iterator is currently pointing. + Index32 operator*() { return mOffset; } + Index32 operator*() const { return mOffset; } + + /// @brief Advance to the next (valid) item (prefix). + ValueVoxelCIter& operator++() { mValid = false; return *this; } + + operator bool() const { return mValid; } + bool test() const { return mValid; } + Index32 end() const { return mOffset+1; } + + void reset(Index32 /*item*/, Index32 /*end*/) {} + + Parent& parent() { return mParent; } + Index32 offset() { return mOffset; } + inline bool next() { this->operator++(); return this->test(); } + + /// @brief For efficiency, Coord and active state assumed to be readily available + /// when iterating over indices of a single voxel + Coord getCoord [[noreturn]] () const { + OPENVDB_THROW(RuntimeError, "ValueVoxelCIter does not provide a valid Coord."); + } + void getCoord [[noreturn]] (Coord& /*coord*/) const { + OPENVDB_THROW(RuntimeError, "ValueVoxelCIter does not provide a valid Coord."); + } + bool isValueOn [[noreturn]] () const { + OPENVDB_THROW(RuntimeError, "ValueVoxelCIter does not test if voxel is active."); + } + + /// @{ + /// @brief Equality operators + bool operator==(const ValueVoxelCIter& other) const { return mOffset == other.mOffset; } + bool operator!=(const ValueVoxelCIter& other) const { return !this->operator==(other); } + /// @} + +private: + Index32 mOffset = 0; + Parent mParent; + mutable bool mValid = true; +}; // class ValueVoxelCIter + + +/// @brief A forward iterator over array indices with filtering +/// IteratorT can be either IndexIter or ValueIndexIter (or some custom index iterator) +/// FilterT should be a struct or class with a valid() method than can be evaluated per index +/// Here's a simple filter example that only accepts even indices: +/// +/// struct EvenIndexFilter +/// { +/// bool valid(const Index32 offset) const { +/// return (offset % 2) == 0; +/// } +/// }; +/// +template +class IndexIter +{ +public: + /// @brief A forward iterator over array indices from a value iterator (such as ValueOnCIter) + class ValueIndexIter + { + public: + ValueIndexIter(const IteratorT& iter) + : mIter(iter), mParent(&mIter.parent()) + { + if (mIter) { + assert(mParent); + Index32 start = (mIter.offset() > 0 ? + Index32(mParent->getValue(mIter.offset() - 1)) : Index32(0)); + this->reset(start, *mIter); + if (mItem >= mEnd) this->operator++(); + } + } + ValueIndexIter(const ValueIndexIter& other) + : mEnd(other.mEnd), mItem(other.mItem), mIter(other.mIter), mParent(other.mParent) + { + assert(mParent); + } + ValueIndexIter& operator=(const ValueIndexIter&) = default; + + inline Index32 end() const { return mEnd; } + + inline void reset(Index32 item, Index32 end) { + mItem = item; + mEnd = end; + } + + /// @brief Returns the item to which this iterator is currently pointing. + inline Index32 operator*() { assert(mIter); return mItem; } + inline Index32 operator*() const { assert(mIter); return mItem; } + + /// @brief Return @c true if this iterator is not yet exhausted. + inline operator bool() const { return mIter; } + inline bool test() const { return mIter; } + + /// @brief Advance to the next (valid) item (prefix). + inline ValueIndexIter& operator++() { + ++mItem; + while (mItem >= mEnd && mIter.next()) { + assert(mParent); + this->reset(mParent->getValue(mIter.offset() - 1), *mIter); + } + return *this; + } + + /// @brief Advance to the next (valid) item. + inline bool next() { this->operator++(); return this->test(); } + inline bool increment() { this->next(); return this->test(); } + + /// Return the coordinates of the item to which the value iterator is pointing. + inline Coord getCoord() const { assert(mIter); return mIter.getCoord(); } + /// Return in @a xyz the coordinates of the item to which the value iterator is pointing. + inline void getCoord(Coord& xyz) const { assert(mIter); xyz = mIter.getCoord(); } + + /// @brief Return @c true if this iterator is pointing to an active value. + inline bool isValueOn() const { assert(mIter); return mIter.isValueOn(); } + + /// Return the const value iterator + inline const IteratorT& valueIter() const { return mIter; } + + /// @brief Equality operators + bool operator==(const ValueIndexIter& other) const { return mItem == other.mItem; } + bool operator!=(const ValueIndexIter& other) const { return !this->operator==(other); } + + private: + Index32 mEnd = 0; + Index32 mItem = 0; + IteratorT mIter; + const typename IteratorT::NodeType* mParent; + }; // ValueIndexIter + + IndexIter(const IteratorT& iterator, const FilterT& filter) + : mIterator(iterator) + , mFilter(filter) + { + if (!mFilter.initialized()) { + OPENVDB_THROW(RuntimeError, + "Filter needs to be initialized before constructing the iterator."); + } + if (mIterator) { + this->reset(*mIterator, mIterator.end()); + } + } + IndexIter(const IndexIter& other) + : mIterator(other.mIterator) + , mFilter(other.mFilter) + { + if (!mFilter.initialized()) { + OPENVDB_THROW(RuntimeError, + "Filter needs to be initialized before constructing the iterator."); + } + } + IndexIter& operator=(const IndexIter& other) + { + if (&other != this) { + mIterator = other.mIterator; + mFilter = other.mFilter; + if (!mFilter.initialized()) { + OPENVDB_THROW(RuntimeError, + "Filter needs to be initialized before constructing the iterator."); + } + } + return *this; + } + + Index32 end() const { return mIterator.end(); } + + /// @brief Reset the begining and end of the iterator. + void reset(Index32 begin, Index32 end) { + mIterator.reset(begin, end); + while (mIterator.test() && !mFilter.template valid(mIterator)) { + ++mIterator; + } + } + + /// @brief Returns the item to which this iterator is currently pointing. + Index32 operator*() { assert(mIterator); return *mIterator; } + Index32 operator*() const { assert(mIterator); return *mIterator; } + + /// @brief Return @c true if this iterator is not yet exhausted. + operator bool() const { return mIterator.test(); } + bool test() const { return mIterator.test(); } + + /// @brief Advance to the next (valid) item (prefix). + IndexIter& operator++() { + while (true) { + ++mIterator; + if (!mIterator.test() || mFilter.template valid(mIterator)) { + break; + } + } + return *this; + } + + /// @brief Advance to the next (valid) item (postfix). + IndexIter operator++(int /*dummy*/) { + IndexIter newIterator(*this); + this->operator++(); + return newIterator; + } + + /// @brief Advance to the next (valid) item. + bool next() { this->operator++(); return this->test(); } + bool increment() { this->next(); return this->test(); } + + /// Return the const filter + inline const FilterT& filter() const { return mFilter; } + + /// Return the coordinates of the item to which the value iterator is pointing. + inline Coord getCoord() const { assert(mIterator); return mIterator.getCoord(); } + /// Return in @a xyz the coordinates of the item to which the value iterator is pointing. + inline void getCoord(Coord& xyz) const { assert(mIterator); xyz = mIterator.getCoord(); } + + /// @brief Return @c true if the value iterator is pointing to an active value. + inline bool isValueOn() const { assert(mIterator); return mIterator.valueIter().isValueOn(); } + + /// @brief Equality operators + bool operator==(const IndexIter& other) const { return mIterator == other.mIterator; } + bool operator!=(const IndexIter& other) const { return !this->operator==(other); } + +private: + ValueIndexIter mIterator; + FilterT mFilter; +}; // class IndexIter + + +//////////////////////////////////////// + + +template +inline Index64 iterCount(const IterT& iter) +{ + Index64 size = 0; + for (IterT newIter(iter); newIter; ++newIter, ++size) { } + return size; +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_INDEX_ITERATOR_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointAdvect.h b/openvdb/points/PointAdvect.h new file mode 100644 index 00000000..53d6242b --- /dev/null +++ b/openvdb/points/PointAdvect.h @@ -0,0 +1,247 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey +/// +/// @file points/PointAdvect.h +/// +/// @brief Ability to advect VDB Points through a velocity field. + +#ifndef OPENVDB_POINTS_POINT_ADVECT_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_ADVECT_HAS_BEEN_INCLUDED + +#include +#include +#include + +#include +#include +#include +#include + +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Advect points in a PointDataGrid through a velocity grid +/// @param points the PointDataGrid containing the points to be advected. +/// @param velocity a velocity grid to be sampled. +/// @param integrationOrder the integration scheme to use (1 is forward euler, 4 is runge-kutta 4th) +/// @param dt delta time. +/// @param timeSteps number of advection steps to perform. +/// @param advectFilter an optional advection index filter (moves a subset of the points) +/// @param filter an optional index filter (deletes a subset of the points) +/// @param cached caches velocity interpolation for faster performance, disable to use +/// less memory (default is on). +template +inline void advectPoints(PointDataGridT& points, const VelGridT& velocity, + const Index integrationOrder, const double dt, const Index timeSteps, + const AdvectFilterT& advectFilter = NullFilter(), + const FilterT& filter = NullFilter(), + const bool cached = true); + + +//////////////////////////////////////// + + +namespace point_advect_internal { + +enum IntegrationOrder { + INTEGRATION_ORDER_FWD_EULER = 1, + INTEGRATION_ORDER_RK_2ND, + INTEGRATION_ORDER_RK_3RD, + INTEGRATION_ORDER_RK_4TH +}; + +template +class AdvectionDeformer +{ +public: + using IntegratorT = openvdb::tools::VelocityIntegrator; + + AdvectionDeformer(const VelGridT& velocityGrid, const double timeStep, const int steps, + const FilterT& filter) + : mIntegrator(velocityGrid) + , mTimeStep(timeStep) + , mSteps(steps) + , mFilter(filter) { } + + template + void reset(const LeafT& leaf, size_t /*idx*/) + { + mFilter.reset(leaf); + } + + template + void apply(Vec3d& position, const IndexIterT& iter) const + { + if (mFilter.valid(iter)) { + for (int n = 0; n < mSteps; ++n) { + mIntegrator.template rungeKutta( + static_cast(mTimeStep), position); + } + } + } + +private: + IntegratorT mIntegrator; + double mTimeStep; + const int mSteps; + FilterT mFilter; +}; // class AdvectionDeformer + + +template +struct AdvectionOp +{ + using CachedDeformerT = CachedDeformer; + + AdvectionOp(PointDataGridT& points, const VelGridT& velocity, + const Index integrationOrder, const double timeStep, const Index steps, + const AdvectFilterT& advectFilter, + const FilterT& filter) + : mPoints(points) + , mVelocity(velocity) + , mIntegrationOrder(integrationOrder) + , mTimeStep(timeStep) + , mSteps(steps) + , mAdvectFilter(advectFilter) + , mFilter(filter) { } + + void cache() + { + mCachedDeformer.reset(new CachedDeformerT(mCache)); + (*this)(true); + } + + void advect() + { + (*this)(false); + } + +private: + template + void resolveIntegrationOrder(bool buildCache) + { + const auto leaf = mPoints.constTree().cbeginLeaf(); + if (!leaf) return; + + // move points according to the pre-computed cache + if (!buildCache && mCachedDeformer) { + movePoints(mPoints, *mCachedDeformer, mFilter); + return; + } + + NullFilter nullFilter; + + if (buildCache) { + // disable group filtering from the advection deformer and perform group filtering + // in the cache deformer instead, this restricts the cache to just containing + // positions from points which are both deforming *and* are not being deleted + AdvectionDeformer deformer( + mVelocity, mTimeStep, mSteps, nullFilter); + if (mFilter.state() == index::ALL && mAdvectFilter.state() == index::ALL) { + mCachedDeformer->evaluate(mPoints, deformer, nullFilter); + } else { + BinaryFilter binaryFilter( + mAdvectFilter, mFilter); + mCachedDeformer->evaluate(mPoints, deformer, binaryFilter); + } + } + else { + // revert to NullFilter if all points are being evaluated + if (mAdvectFilter.state() == index::ALL) { + AdvectionDeformer deformer( + mVelocity, mTimeStep, mSteps, nullFilter); + movePoints(mPoints, deformer, mFilter); + } + else { + AdvectionDeformer deformer( + mVelocity, mTimeStep, mSteps, mAdvectFilter); + movePoints(mPoints, deformer, mFilter); + } + } + } + + template + void resolveStaggered(bool buildCache) + { + if (mIntegrationOrder == INTEGRATION_ORDER_FWD_EULER) { + resolveIntegrationOrder<1, Staggered>(buildCache); + } else if (mIntegrationOrder == INTEGRATION_ORDER_RK_2ND) { + resolveIntegrationOrder<2, Staggered>(buildCache); + } else if (mIntegrationOrder == INTEGRATION_ORDER_RK_3RD) { + resolveIntegrationOrder<3, Staggered>(buildCache); + } else if (mIntegrationOrder == INTEGRATION_ORDER_RK_4TH) { + resolveIntegrationOrder<4, Staggered>(buildCache); + } + } + + void operator()(bool buildCache) + { + // early-exit if no leafs + if (mPoints.constTree().leafCount() == 0) return; + + if (mVelocity.getGridClass() == openvdb::GRID_STAGGERED) { + resolveStaggered(buildCache); + } else { + resolveStaggered(buildCache); + } + } + + PointDataGridT& mPoints; + const VelGridT& mVelocity; + const Index mIntegrationOrder; + const double mTimeStep; + const Index mSteps; + const AdvectFilterT& mAdvectFilter; + const FilterT& mFilter; + CachedDeformerT::Cache mCache; + std::unique_ptr mCachedDeformer; +}; // struct AdvectionOp + +} // namespace point_advect_internal + + +//////////////////////////////////////// + + +template +inline void advectPoints(PointDataGridT& points, const VelGridT& velocity, + const Index integrationOrder, const double timeStep, const Index steps, + const AdvectFilterT& advectFilter, + const FilterT& filter, + const bool cached) +{ + using namespace point_advect_internal; + + if (steps == 0) return; + + if (integrationOrder > 4) { + throw ValueError{"Unknown integration order for advecting points."}; + } + + AdvectionOp op( + points, velocity, integrationOrder, timeStep, steps, + advectFilter, filter); + + // if caching is enabled, sample the velocity field using a CachedDeformer to store the + // intermediate positions before moving the points, this uses more memory but typically + // results in faster overall performance + if (cached) op.cache(); + + // advect the points + op.advect(); +} + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_ADVECT_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointAttribute.h b/openvdb/points/PointAttribute.h new file mode 100644 index 00000000..4282a95c --- /dev/null +++ b/openvdb/points/PointAttribute.h @@ -0,0 +1,549 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey, Khang Ngo +/// +/// @file points/PointAttribute.h +/// +/// @brief Point attribute manipulation in a VDB Point Grid. + +#ifndef OPENVDB_POINTS_POINT_ATTRIBUTE_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_ATTRIBUTE_HAS_BEEN_INCLUDED + +#include + +#include "AttributeArrayString.h" +#include "AttributeSet.h" +#include "AttributeGroup.h" +#include "PointDataGrid.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +namespace point_attribute_internal { + +template +struct Default +{ + static inline ValueType value() { return zeroVal(); } +}; + +} // namespace point_attribute_internal + + +/// @brief Appends a new attribute to the VDB tree +/// (this method does not require a templated AttributeType) +/// +/// @param tree the PointDataTree to be appended to. +/// @param name name for the new attribute. +/// @param type the type of the attibute. +/// @param strideOrTotalSize the stride of the attribute +/// @param constantStride if @c false, stride is interpreted as total size of the array +/// @param metaDefaultValue metadata default attribute value +/// @param hidden mark attribute as hidden +/// @param transient mark attribute as transient +template +inline void appendAttribute(PointDataTreeT& tree, + const Name& name, + const NamePair& type, + const Index strideOrTotalSize = 1, + const bool constantStride = true, + Metadata::Ptr metaDefaultValue = Metadata::Ptr(), + const bool hidden = false, + const bool transient = false); + +/// @brief Appends a new attribute to the VDB tree. +/// +/// @param tree the PointDataTree to be appended to. +/// @param name name for the new attribute +/// @param uniformValue the initial value of the attribute +/// @param strideOrTotalSize the stride of the attribute +/// @param constantStride if @c false, stride is interpreted as total size of the array +/// @param metaDefaultValue metadata default attribute value +/// @param hidden mark attribute as hidden +/// @param transient mark attribute as transient +template +inline void appendAttribute(PointDataTreeT& tree, + const std::string& name, + const ValueType& uniformValue = + point_attribute_internal::Default::value(), + const Index strideOrTotalSize = 1, + const bool constantStride = true, + Metadata::Ptr metaDefaultValue = Metadata::Ptr(), + const bool hidden = false, + const bool transient = false); + +/// @brief Collapse the attribute into a uniform value +/// +/// @param tree the PointDataTree in which to collapse the attribute. +/// @param name name for the attribute. +/// @param uniformValue value of the attribute +template +inline void collapseAttribute( PointDataTreeT& tree, + const Name& name, + const ValueType& uniformValue = + point_attribute_internal::Default::value()); + +/// @brief Drops attributes from the VDB tree. +/// +/// @param tree the PointDataTree to be dropped from. +/// @param indices indices of the attributes to drop. +template +inline void dropAttributes( PointDataTreeT& tree, + const std::vector& indices); + +/// @brief Drops attributes from the VDB tree. +/// +/// @param tree the PointDataTree to be dropped from. +/// @param names names of the attributes to drop. +template +inline void dropAttributes( PointDataTreeT& tree, + const std::vector& names); + +/// @brief Drop one attribute from the VDB tree (convenience method). +/// +/// @param tree the PointDataTree to be dropped from. +/// @param index index of the attribute to drop. +template +inline void dropAttribute( PointDataTreeT& tree, + const size_t& index); + +/// @brief Drop one attribute from the VDB tree (convenience method). +/// +/// @param tree the PointDataTree to be dropped from. +/// @param name name of the attribute to drop. +template +inline void dropAttribute( PointDataTreeT& tree, + const Name& name); + +/// @brief Rename attributes in a VDB tree. +/// +/// @param tree the PointDataTree. +/// @param oldNames a list of old attribute names to rename from. +/// @param newNames a list of new attribute names to rename to. +/// +/// @note Number of oldNames must match the number of newNames. +/// +/// @note Duplicate names and renaming group attributes are not allowed. +template +inline void renameAttributes(PointDataTreeT& tree, + const std::vector& oldNames, + const std::vector& newNames); + +/// @brief Rename an attribute in a VDB tree. +/// +/// @param tree the PointDataTree. +/// @param oldName the old attribute name to rename from. +/// @param newName the new attribute name to rename to. +/// +/// @note newName must not already exist and must not be a group attribute. +template +inline void renameAttribute(PointDataTreeT& tree, + const Name& oldName, + const Name& newName); + +/// @brief Compact attributes in a VDB tree (if possible). +/// +/// @param tree the PointDataTree. +template +inline void compactAttributes(PointDataTreeT& tree); + + +//////////////////////////////////////// + + +namespace point_attribute_internal { + + +template +inline void collapseAttribute(AttributeArray& array, + const AttributeSet::Descriptor&, const ValueType& uniformValue) +{ + AttributeWriteHandle handle(array); + handle.collapse(uniformValue); +} + + +inline void collapseAttribute(AttributeArray& array, + const AttributeSet::Descriptor& descriptor, const Name& uniformValue) +{ + StringAttributeWriteHandle handle(array, descriptor.getMetadata()); + handle.collapse(uniformValue); +} + + +//////////////////////////////////////// + + +template +struct AttributeTypeConversion +{ + static const NamePair& type() { + return TypedAttributeArray::attributeType(); + } +}; + + +template +struct AttributeTypeConversion +{ + static const NamePair& type() { return StringAttributeArray::attributeType(); } +}; + + +//////////////////////////////////////// + + +template +struct MetadataStorage +{ + static void add(PointDataTreeT&, const ValueType&) {} + + template + static void add(PointDataTreeT&, const AttributeListType&) {} +}; + + +template +struct MetadataStorage +{ + static void add(PointDataTreeT& tree, const Name& uniformValue) { + MetaMap& metadata = makeDescriptorUnique(tree)->getMetadata(); + StringMetaInserter inserter(metadata); + inserter.insert(uniformValue); + } + + template + static void add(PointDataTreeT& tree, const AttributeListType& data) { + MetaMap& metadata = makeDescriptorUnique(tree)->getMetadata(); + StringMetaInserter inserter(metadata); + Name value; + + for (size_t i = 0; i < data.size(); i++) { + data.get(value, i); + inserter.insert(value); + } + } +}; + + +} // namespace point_attribute_internal + + +//////////////////////////////////////// + + +template +inline void appendAttribute(PointDataTreeT& tree, + const Name& name, + const NamePair& type, + const Index strideOrTotalSize, + const bool constantStride, + Metadata::Ptr metaDefaultValue, + const bool hidden, + const bool transient) +{ + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + // do not append a non-unique attribute + + const auto& descriptor = iter->attributeSet().descriptor(); + const size_t index = descriptor.find(name); + + if (index != AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, + "Cannot append an attribute with a non-unique name - " << name << "."); + } + + // create a new attribute descriptor + + auto newDescriptor = descriptor.duplicateAppend(name, type); + + // store the attribute default value in the descriptor metadata + + if (metaDefaultValue) { + newDescriptor->setDefaultValue(name, *metaDefaultValue); + } + + // extract new pos + + const size_t pos = newDescriptor->find(name); + + // acquire registry lock to avoid locking when appending attributes in parallel + + AttributeArray::ScopedRegistryLock lock; + + // insert attributes using the new descriptor + + tree::LeafManager leafManager(tree); + leafManager.foreach( + [&](typename PointDataTree::LeafNodeType& leaf, size_t /*idx*/) { + auto expected = leaf.attributeSet().descriptorPtr(); + + auto attribute = leaf.appendAttribute(*expected, newDescriptor, + pos, strideOrTotalSize, constantStride, &lock); + + if (hidden) attribute->setHidden(true); + if (transient) attribute->setTransient(true); + }, /*threaded=*/ true + ); +} + + +//////////////////////////////////////// + + +template +inline void appendAttribute(PointDataTreeT& tree, + const std::string& name, + const ValueType& uniformValue, + const Index strideOrTotalSize, + const bool constantStride, + Metadata::Ptr metaDefaultValue, + const bool hidden, + const bool transient) +{ + static_assert(!std::is_base_of::value, + "ValueType must not be derived from AttributeArray"); + + using point_attribute_internal::AttributeTypeConversion; + using point_attribute_internal::Default; + using point_attribute_internal::MetadataStorage; + + appendAttribute(tree, name, AttributeTypeConversion::type(), + strideOrTotalSize, constantStride, metaDefaultValue, hidden, transient); + + if (!math::isExactlyEqual(uniformValue, Default::value())) { + MetadataStorage::add(tree, uniformValue); + collapseAttribute(tree, name, uniformValue); + } +} + + +//////////////////////////////////////// + + +template +inline void collapseAttribute( PointDataTreeT& tree, + const Name& name, + const ValueType& uniformValue) +{ + static_assert(!std::is_base_of::value, + "ValueType must not be derived from AttributeArray"); + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const auto& descriptor = iter->attributeSet().descriptor(); + + // throw if attribute name does not exist + + const size_t index = descriptor.find(name); + if (index == AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, "Cannot find attribute name in PointDataTree."); + } + + tree::LeafManager leafManager(tree); + leafManager.foreach( + [&](typename PointDataTree::LeafNodeType& leaf, size_t /*idx*/) { + assert(leaf.hasAttribute(index)); + AttributeArray& array = leaf.attributeArray(index); + point_attribute_internal::collapseAttribute( + array, descriptor, uniformValue); + }, /*threaded=*/true + ); +} + + +//////////////////////////////////////// + + +template +inline void dropAttributes( PointDataTreeT& tree, + const std::vector& indices) +{ + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const auto& descriptor = iter->attributeSet().descriptor(); + + // throw if position index present in the indices as this attribute is mandatory + + const size_t positionIndex = descriptor.find("P"); + if (positionIndex!= AttributeSet::INVALID_POS && + std::find(indices.begin(), indices.end(), positionIndex) != indices.end()) { + OPENVDB_THROW(KeyError, "Cannot drop mandatory position attribute."); + } + + // insert attributes using the new descriptor + + auto newDescriptor = descriptor.duplicateDrop(indices); + + tree::LeafManager leafManager(tree); + leafManager.foreach( + [&](typename PointDataTree::LeafNodeType& leaf, size_t /*idx*/) { + auto expected = leaf.attributeSet().descriptorPtr(); + leaf.dropAttributes(indices, *expected, newDescriptor); + }, /*threaded=*/true + ); +} + + +//////////////////////////////////////// + + +template +inline void dropAttributes( PointDataTreeT& tree, + const std::vector& names) +{ + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + const AttributeSet::Descriptor& descriptor = attributeSet.descriptor(); + + std::vector indices; + + for (const Name& name : names) { + const size_t index = descriptor.find(name); + + // do not attempt to drop an attribute that does not exist + if (index == AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, + "Cannot drop an attribute that does not exist - " << name << "."); + } + + indices.push_back(index); + } + + dropAttributes(tree, indices); +} + + +//////////////////////////////////////// + + +template +inline void dropAttribute( PointDataTreeT& tree, + const size_t& index) +{ + std::vector indices{index}; + dropAttributes(tree, indices); +} + + +template +inline void dropAttribute( PointDataTreeT& tree, + const Name& name) +{ + std::vector names{name}; + dropAttributes(tree, names); +} + + +//////////////////////////////////////// + + +template +inline void renameAttributes( PointDataTreeT& tree, + const std::vector& oldNames, + const std::vector& newNames) +{ + if (oldNames.size() != newNames.size()) { + OPENVDB_THROW(ValueError, "Mis-matching sizes of name vectors, cannot rename attributes."); + } + + using Descriptor = AttributeSet::Descriptor; + + auto iter = tree.beginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + const Descriptor::Ptr descriptor = attributeSet.descriptorPtr(); + auto newDescriptor = std::make_shared(*descriptor); + + for (size_t i = 0; i < oldNames.size(); i++) { + const Name& oldName = oldNames[i]; + if (descriptor->find(oldName) == AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, "Cannot find requested attribute - " << oldName << "."); + } + + const Name& newName = newNames[i]; + if (descriptor->find(newName) != AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, + "Cannot rename attribute as new name already exists - " << newName << "."); + } + + const AttributeArray* array = attributeSet.getConst(oldName); + assert(array); + + if (isGroup(*array)) { + OPENVDB_THROW(KeyError, "Cannot rename group attribute - " << oldName << "."); + } + + newDescriptor->rename(oldName, newName); + } + + for (; iter; ++iter) { + iter->renameAttributes(*descriptor, newDescriptor); + } +} + + +template +inline void renameAttribute(PointDataTreeT& tree, + const Name& oldName, + const Name& newName) +{ + renameAttributes(tree, {oldName}, {newName}); +} + + +//////////////////////////////////////// + + +template +inline void compactAttributes(PointDataTreeT& tree) +{ + auto iter = tree.beginLeaf(); + if (!iter) return; + + tree::LeafManager leafManager(tree); + leafManager.foreach( + [&](typename PointDataTree::LeafNodeType& leaf, size_t /*idx*/) { + leaf.compactAttributes(); + }, /*threaded=*/ true + ); +} + + +//////////////////////////////////////// + + +template +OPENVDB_DEPRECATED inline void bloscCompressAttribute( PointDataTreeT&, + const Name&) +{ + // in-memory compression is no longer supported +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_ATTRIBUTE_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointConversion.h b/openvdb/points/PointConversion.h new file mode 100644 index 00000000..8ef97e93 --- /dev/null +++ b/openvdb/points/PointConversion.h @@ -0,0 +1,1103 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey, Nick Avramoussis +/// +/// @file points/PointConversion.h +/// +/// @brief Convert points and attributes to and from VDB Point Data grids. + +#ifndef OPENVDB_POINTS_POINT_CONVERSION_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_CONVERSION_HAS_BEEN_INCLUDED + +#include + +#include +#include +#include + +#include "AttributeArrayString.h" +#include "AttributeSet.h" +#include "IndexFilter.h" +#include "PointAttribute.h" +#include "PointDataGrid.h" +#include "PointGroup.h" + +#include + +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Localises points with position into a @c PointDataGrid into two stages: +/// allocation of the leaf attribute data and population of the positions. +/// +/// @param pointIndexGrid a PointIndexGrid into the points. +/// @param positions list of world space point positions. +/// @param xform world to index space transform. +/// @param positionDefaultValue metadata default position value +/// +/// @note The position data must be supplied in a Point-Partitioner compatible +/// data structure. A convenience PointAttributeVector class is offered. +/// +/// @note The position data is populated separately to perform world space to +/// voxel space conversion and apply quantisation. +/// +/// @note A @c PointIndexGrid to the points must be supplied to perform this +/// operation. Typically this is built implicitly by the PointDataGrid constructor. + +template< + typename CompressionT, + typename PointDataGridT, + typename PositionArrayT, + typename PointIndexGridT> +inline typename PointDataGridT::Ptr +createPointDataGrid(const PointIndexGridT& pointIndexGrid, + const PositionArrayT& positions, + const math::Transform& xform, + Metadata::Ptr positionDefaultValue = Metadata::Ptr()); + + +/// @brief Convenience method to create a @c PointDataGrid from a std::vector of +/// point positions. +/// +/// @param positions list of world space point positions. +/// @param xform world to index space transform. +/// @param positionDefaultValue metadata default position value +/// +/// @note This method implicitly wraps the std::vector for a Point-Partitioner compatible +/// data structure and creates the required @c PointIndexGrid to the points. + +template +inline typename PointDataGridT::Ptr +createPointDataGrid(const std::vector& positions, + const math::Transform& xform, + Metadata::Ptr positionDefaultValue = Metadata::Ptr()); + + +/// @brief Stores point attribute data in an existing @c PointDataGrid attribute. +/// +/// @param tree the PointDataGrid to be populated. +/// @param pointIndexTree a PointIndexTree into the points. +/// @param attributeName the name of the VDB Points attribute to be populated. +/// @param data a wrapper to the attribute data. +/// @param stride the stride of the attribute +/// @param insertMetadata true if strings are to be automatically inserted as metadata. +/// +/// @note A @c PointIndexGrid to the points must be supplied to perform this +/// operation. This is required to ensure the same point index ordering. +template +inline void +populateAttribute( PointDataTreeT& tree, + const PointIndexTreeT& pointIndexTree, + const openvdb::Name& attributeName, + const PointArrayT& data, + const Index stride = 1, + const bool insertMetadata = true); + +/// @brief Convert the position attribute from a Point Data Grid +/// +/// @param positionAttribute the position attribute to be populated. +/// @param grid the PointDataGrid to be converted. +/// @param pointOffsets a vector of cumulative point offsets for each leaf +/// @param startOffset a value to shift all the point offsets by +/// @param filter an index filter +/// @param inCoreOnly true if out-of-core leaf nodes are to be ignored +/// + +template +inline void +convertPointDataGridPosition( PositionAttribute& positionAttribute, + const PointDataGridT& grid, + const std::vector& pointOffsets, + const Index64 startOffset, + const FilterT& filter = NullFilter(), + const bool inCoreOnly = false); + + +/// @brief Convert the attribute from a PointDataGrid +/// +/// @param attribute the attribute to be populated. +/// @param tree the PointDataTree to be converted. +/// @param pointOffsets a vector of cumulative point offsets for each leaf. +/// @param startOffset a value to shift all the point offsets by +/// @param arrayIndex the index in the Descriptor of the array to be converted. +/// @param stride the stride of the attribute +/// @param filter an index filter +/// @param inCoreOnly true if out-of-core leaf nodes are to be ignored +template +inline void +convertPointDataGridAttribute( TypedAttribute& attribute, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const unsigned arrayIndex, + const Index stride = 1, + const FilterT& filter = NullFilter(), + const bool inCoreOnly = false); + + +/// @brief Convert the group from a PointDataGrid +/// +/// @param group the group to be populated. +/// @param tree the PointDataTree to be converted. +/// @param pointOffsets a vector of cumulative point offsets for each leaf +/// @param startOffset a value to shift all the point offsets by +/// @param index the group index to be converted. +/// @param filter an index filter +/// @param inCoreOnly true if out-of-core leaf nodes are to be ignored +/// + +template +inline void +convertPointDataGridGroup( Group& group, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const AttributeSet::Descriptor::GroupIndex index, + const FilterT& filter = NullFilter(), + const bool inCoreOnly = false); + +/// @ brief Given a container of world space positions and a target points per voxel, +/// compute a uniform voxel size that would best represent the storage of the points in a grid. +/// This voxel size is typically used for conversion of the points into a PointDataGrid. +/// +/// @param positions array of world space positions +/// @param pointsPerVoxel the target number of points per voxel, must be positive and non-zero +/// @param transform voxel size will be computed using this optional transform if provided +/// @param decimalPlaces for readability, truncate voxel size to this number of decimals +/// @param interrupter an optional interrupter +/// +/// @note if none or one point provided in positions, the default voxel size of 0.1 will be returned +/// +template +inline float +computeVoxelSize( const PositionWrapper& positions, + const uint32_t pointsPerVoxel, + const math::Mat4d transform = math::Mat4d::identity(), + const Index decimalPlaces = 5, + InterrupterT* const interrupter = nullptr); + + +//////////////////////////////////////// + + +/// @brief Point-partitioner compatible STL vector attribute wrapper for convenience +template +class PointAttributeVector { +public: + using PosType = ValueType; + using value_type= ValueType; + + PointAttributeVector(const std::vector& data, + const Index stride = 1) + : mData(data) + , mStride(stride) { } + + size_t size() const { return mData.size(); } + void getPos(size_t n, ValueType& xyz) const { xyz = mData[n]; } + void get(ValueType& value, size_t n) const { value = mData[n]; } + void get(ValueType& value, size_t n, openvdb::Index m) const { value = mData[n * mStride + m]; } + +private: + const std::vector& mData; + const Index mStride; +}; // PointAttributeVector + + +//////////////////////////////////////// + + +namespace point_conversion_internal { + + +// ConversionTraits to create the relevant Attribute Handles from a LeafNode +template struct ConversionTraits +{ + using Handle = AttributeHandle; + using WriteHandle = AttributeWriteHandle; + static T zero() { return zeroVal(); } + template + static typename Handle::Ptr handleFromLeaf(LeafT& leaf, Index index) { + const AttributeArray& array = leaf.constAttributeArray(index); + return Handle::create(array); + } + template + static typename WriteHandle::Ptr writeHandleFromLeaf(LeafT& leaf, Index index) { + AttributeArray& array = leaf.attributeArray(index); + return WriteHandle::create(array); + } +}; // ConversionTraits +template <> struct ConversionTraits +{ + using Handle = StringAttributeHandle; + using WriteHandle = StringAttributeWriteHandle; + static openvdb::Name zero() { return ""; } + template + static typename Handle::Ptr handleFromLeaf(LeafT& leaf, Index index) { + const AttributeArray& array = leaf.constAttributeArray(index); + const AttributeSet::Descriptor& descriptor = leaf.attributeSet().descriptor(); + return Handle::create(array, descriptor.getMetadata()); + } + template + static typename WriteHandle::Ptr writeHandleFromLeaf(LeafT& leaf, Index index) { + AttributeArray& array = leaf.attributeArray(index); + const AttributeSet::Descriptor& descriptor = leaf.attributeSet().descriptor(); + return WriteHandle::create(array, descriptor.getMetadata()); + } +}; // ConversionTraits + +template< typename PointDataTreeType, + typename PointIndexTreeType, + typename AttributeListType> +struct PopulateAttributeOp { + + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + using PointIndexLeafNode = typename PointIndexTreeType::LeafNodeType; + using IndexArray = typename PointIndexLeafNode::IndexArray; + using ValueType = typename AttributeListType::value_type; + using HandleT = typename ConversionTraits::WriteHandle; + + PopulateAttributeOp(const PointIndexTreeType& pointIndexTree, + const AttributeListType& data, + const size_t index, + const Index stride = 1) + : mPointIndexTree(pointIndexTree) + , mData(data) + , mIndex(index) + , mStride(stride) { } + + void operator()(const typename LeafManagerT::LeafRange& range) const { + + for (auto leaf = range.begin(); leaf; ++leaf) { + + // obtain the PointIndexLeafNode (using the origin of the current leaf) + + const PointIndexLeafNode* pointIndexLeaf = + mPointIndexTree.probeConstLeaf(leaf->origin()); + + if (!pointIndexLeaf) continue; + + typename HandleT::Ptr attributeWriteHandle = + ConversionTraits::writeHandleFromLeaf(*leaf, static_cast(mIndex)); + + Index64 index = 0; + + const IndexArray& indices = pointIndexLeaf->indices(); + + for (const Index64 leafIndex: indices) + { + ValueType value; + for (Index i = 0; i < mStride; i++) { + mData.get(value, leafIndex, i); + attributeWriteHandle->set(static_cast(index), i, value); + } + index++; + } + + // attempt to compact the array + + attributeWriteHandle->compact(); + } + } + + ////////// + + const PointIndexTreeType& mPointIndexTree; + const AttributeListType& mData; + const size_t mIndex; + const Index mStride; +}; + +template +struct ConvertPointDataGridPositionOp { + + using LeafNode = typename PointDataTreeType::LeafNodeType; + using ValueType = typename Attribute::ValueType; + using HandleT = typename Attribute::Handle; + using SourceHandleT = AttributeHandle; + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + + ConvertPointDataGridPositionOp( Attribute& attribute, + const std::vector& pointOffsets, + const Index64 startOffset, + const math::Transform& transform, + const size_t index, + const FilterT& filter, + const bool inCoreOnly) + : mAttribute(attribute) + , mPointOffsets(pointOffsets) + , mStartOffset(startOffset) + , mTransform(transform) + , mIndex(index) + , mFilter(filter) + , mInCoreOnly(inCoreOnly) + { + // only accept Vec3f as ValueType + static_assert(VecTraits::Size == 3 && + std::is_floating_point::value, + "ValueType is not Vec3f"); + } + + template + void convert(IterT& iter, HandleT& targetHandle, + SourceHandleT& sourceHandle, Index64& offset) const + { + for (; iter; ++iter) { + const Vec3d xyz = iter.getCoord().asVec3d(); + const Vec3d pos = sourceHandle.get(*iter); + targetHandle.set(static_cast(offset++), /*stride=*/0, + mTransform.indexToWorld(pos + xyz)); + } + } + + void operator()(const LeafRangeT& range) const + { + HandleT pHandle(mAttribute); + + for (auto leaf = range.begin(); leaf; ++leaf) { + + assert(leaf.pos() < mPointOffsets.size()); + + if (mInCoreOnly && leaf->buffer().isOutOfCore()) continue; + + Index64 offset = mStartOffset; + + if (leaf.pos() > 0) offset += mPointOffsets[leaf.pos() - 1]; + + auto handle = SourceHandleT::create(leaf->constAttributeArray(mIndex)); + + if (mFilter.state() == index::ALL) { + auto iter = leaf->beginIndexOn(); + convert(iter, pHandle, *handle, offset); + } + else { + auto iter = leaf->beginIndexOn(mFilter); + convert(iter, pHandle, *handle, offset); + } + } + } + + ////////// + + Attribute& mAttribute; + const std::vector& mPointOffsets; + const Index64 mStartOffset; + const math::Transform& mTransform; + const size_t mIndex; + const FilterT& mFilter; + const bool mInCoreOnly; +}; // ConvertPointDataGridPositionOp + + +template +struct ConvertPointDataGridAttributeOp { + + using LeafNode = typename PointDataTreeType::LeafNodeType; + using ValueType = typename Attribute::ValueType; + using HandleT = typename Attribute::Handle; + using SourceHandleT = typename ConversionTraits::Handle; + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + + ConvertPointDataGridAttributeOp(Attribute& attribute, + const std::vector& pointOffsets, + const Index64 startOffset, + const size_t index, + const Index stride, + const FilterT& filter, + const bool inCoreOnly) + : mAttribute(attribute) + , mPointOffsets(pointOffsets) + , mStartOffset(startOffset) + , mIndex(index) + , mStride(stride) + , mFilter(filter) + , mInCoreOnly(inCoreOnly) { } + + template + void convert(IterT& iter, HandleT& targetHandle, + SourceHandleT& sourceHandle, Index64& offset) const + { + if (sourceHandle.isUniform()) { + const ValueType uniformValue(sourceHandle.get(0)); + for (; iter; ++iter) { + for (Index i = 0; i < mStride; i++) { + targetHandle.set(static_cast(offset), i, uniformValue); + } + offset++; + } + } + else { + for (; iter; ++iter) { + for (Index i = 0; i < mStride; i++) { + targetHandle.set(static_cast(offset), i, + sourceHandle.get(*iter, /*stride=*/i)); + } + offset++; + } + } + } + + void operator()(const LeafRangeT& range) const + { + HandleT pHandle(mAttribute); + + for (auto leaf = range.begin(); leaf; ++leaf) { + + assert(leaf.pos() < mPointOffsets.size()); + + if (mInCoreOnly && leaf->buffer().isOutOfCore()) continue; + + Index64 offset = mStartOffset; + + if (leaf.pos() > 0) offset += mPointOffsets[leaf.pos() - 1]; + + typename SourceHandleT::Ptr handle = ConversionTraits::handleFromLeaf( + *leaf, static_cast(mIndex)); + + if (mFilter.state() == index::ALL) { + auto iter = leaf->beginIndexOn(); + convert(iter, pHandle, *handle, offset); + } else { + auto iter = leaf->beginIndexOn(mFilter); + convert(iter, pHandle, *handle, offset); + } + } + } + + ////////// + + Attribute& mAttribute; + const std::vector& mPointOffsets; + const Index64 mStartOffset; + const size_t mIndex; + const Index mStride; + const FilterT& mFilter; + const bool mInCoreOnly; +}; // ConvertPointDataGridAttributeOp + +template +struct ConvertPointDataGridGroupOp { + + using LeafNode = typename PointDataTreeType::LeafNodeType; + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + + ConvertPointDataGridGroupOp(Group& group, + const std::vector& pointOffsets, + const Index64 startOffset, + const AttributeSet::Descriptor::GroupIndex index, + const FilterT& filter, + const bool inCoreOnly) + : mGroup(group) + , mPointOffsets(pointOffsets) + , mStartOffset(startOffset) + , mIndex(index) + , mFilter(filter) + , mInCoreOnly(inCoreOnly) { } + + template + void convert(IterT& iter, const GroupAttributeArray& groupArray, Index64& offset) const + { + const auto bitmask = static_cast(1 << mIndex.second); + + if (groupArray.isUniform()) { + if (groupArray.get(0) & bitmask) { + for (; iter; ++iter) { + mGroup.setOffsetOn(static_cast(offset)); + offset++; + } + } + } + else { + for (; iter; ++iter) { + if (groupArray.get(*iter) & bitmask) { + mGroup.setOffsetOn(static_cast(offset)); + } + offset++; + } + } + } + + void operator()(const LeafRangeT& range) const + { + for (auto leaf = range.begin(); leaf; ++leaf) { + + assert(leaf.pos() < mPointOffsets.size()); + + if (mInCoreOnly && leaf->buffer().isOutOfCore()) continue; + + Index64 offset = mStartOffset; + + if (leaf.pos() > 0) offset += mPointOffsets[leaf.pos() - 1]; + + const AttributeArray& array = leaf->constAttributeArray(mIndex.first); + assert(isGroup(array)); + const GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + if (mFilter.state() == index::ALL) { + auto iter = leaf->beginIndexOn(); + convert(iter, groupArray, offset); + } + else { + auto iter = leaf->beginIndexOn(mFilter); + convert(iter, groupArray, offset); + } + } + } + + ////////// + + Group& mGroup; + const std::vector& mPointOffsets; + const Index64 mStartOffset; + const GroupIndex mIndex; + const FilterT& mFilter; + const bool mInCoreOnly; +}; // ConvertPointDataGridGroupOp + +template +struct CalculatePositionBounds +{ + CalculatePositionBounds(const PositionArrayT& positions, + const math::Mat4d& inverse) + : mPositions(positions) + , mInverseMat(inverse) + , mMin(std::numeric_limits::max()) + , mMax(-std::numeric_limits::max()) {} + + CalculatePositionBounds(const CalculatePositionBounds& other, tbb::split) + : mPositions(other.mPositions) + , mInverseMat(other.mInverseMat) + , mMin(std::numeric_limits::max()) + , mMax(-std::numeric_limits::max()) {} + + void operator()(const tbb::blocked_range& range) { + Vec3R pos; + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + mPositions.getPos(n, pos); + pos = mInverseMat.transform(pos); + mMin = math::minComponent(mMin, pos); + mMax = math::maxComponent(mMax, pos); + } + } + + void join(const CalculatePositionBounds& other) { + mMin = math::minComponent(mMin, other.mMin); + mMax = math::maxComponent(mMax, other.mMax); + } + + BBoxd getBoundingBox() const { + return BBoxd(mMin, mMax); + } + +private: + const PositionArrayT& mPositions; + const math::Mat4d& mInverseMat; + Vec3R mMin, mMax; +}; + +} // namespace point_conversion_internal + + +//////////////////////////////////////// + + +template +inline typename PointDataGridT::Ptr +createPointDataGrid(const PointIndexGridT& pointIndexGrid, const PositionArrayT& positions, + const math::Transform& xform, Metadata::Ptr positionDefaultValue) +{ + using PointDataTreeT = typename PointDataGridT::TreeType; + using LeafT = typename PointDataTree::LeafNodeType; + using PointIndexLeafT = typename PointIndexGridT::TreeType::LeafNodeType; + using PointIndexT = typename PointIndexLeafT::ValueType; + using LeafManagerT = typename tree::LeafManager; + using PositionAttributeT = TypedAttributeArray; + + const NamePair positionType = PositionAttributeT::attributeType(); + + // construct the Tree using a topology copy of the PointIndexGrid + + const auto& pointIndexTree = pointIndexGrid.tree(); + typename PointDataTreeT::Ptr treePtr(new PointDataTreeT(pointIndexTree)); + + // create attribute descriptor from position type + + auto descriptor = AttributeSet::Descriptor::create(positionType); + + // add default value for position if provided + + if (positionDefaultValue) descriptor->setDefaultValue("P", *positionDefaultValue); + + // retrieve position index + + const size_t positionIndex = descriptor->find("P"); + assert(positionIndex != AttributeSet::INVALID_POS); + + // acquire registry lock to avoid locking when appending attributes in parallel + + AttributeArray::ScopedRegistryLock lock; + + // populate position attribute + + LeafManagerT leafManager(*treePtr); + leafManager.foreach( + [&](LeafT& leaf, size_t /*idx*/) { + + // obtain the PointIndexLeafNode (using the origin of the current leaf) + + const auto* pointIndexLeaf = pointIndexTree.probeConstLeaf(leaf.origin()); + assert(pointIndexLeaf); + + // initialise the attribute storage + + Index pointCount(static_cast(pointIndexLeaf->indices().size())); + leaf.initializeAttributes(descriptor, pointCount, &lock); + + // create write handle for position + + auto attributeWriteHandle = AttributeWriteHandle::create( + leaf.attributeArray(positionIndex)); + + Index index = 0; + + const PointIndexT + *begin = static_cast(nullptr), + *end = static_cast(nullptr); + + // iterator over every active voxel in the point index leaf + + for (auto iter = pointIndexLeaf->cbeginValueOn(); iter; ++iter) { + + // find the voxel center + + const Coord& ijk = iter.getCoord(); + const Vec3d& positionCellCenter(ijk.asVec3d()); + + // obtain pointers for this voxel from begin to end in the indices array + + pointIndexLeaf->getIndices(ijk, begin, end); + + while (begin < end) { + + typename PositionArrayT::value_type positionWorldSpace; + positions.getPos(*begin, positionWorldSpace); + + // compute the index-space position and then subtract the voxel center + + const Vec3d positionIndexSpace = xform.worldToIndex(positionWorldSpace); + const Vec3f positionVoxelSpace(positionIndexSpace - positionCellCenter); + + attributeWriteHandle->set(index++, positionVoxelSpace); + + ++begin; + } + } + }, + /*threaded=*/true); + + auto grid = PointDataGridT::create(treePtr); + grid->setTransform(xform.copy()); + return grid; +} + + +//////////////////////////////////////// + + +template +inline typename PointDataGridT::Ptr +createPointDataGrid(const std::vector& positions, + const math::Transform& xform, + Metadata::Ptr positionDefaultValue) +{ + const PointAttributeVector pointList(positions); + + tools::PointIndexGrid::Ptr pointIndexGrid = tools::createPointIndexGrid(pointList, xform); + return createPointDataGrid(*pointIndexGrid, pointList, xform, positionDefaultValue); +} + + +//////////////////////////////////////// + + +template +inline void +populateAttribute(PointDataTreeT& tree, const PointIndexTreeT& pointIndexTree, + const openvdb::Name& attributeName, const PointArrayT& data, const Index stride, + const bool insertMetadata) +{ + using point_conversion_internal::PopulateAttributeOp; + using ValueType = typename PointArrayT::value_type; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const size_t index = iter->attributeSet().find(attributeName); + + if (index == AttributeSet::INVALID_POS) { + OPENVDB_THROW(KeyError, "Attribute not found to populate - " << attributeName << "."); + } + + if (insertMetadata) { + point_attribute_internal::MetadataStorage::add(tree, data); + } + + // populate attribute + + typename tree::LeafManager leafManager(tree); + + PopulateAttributeOp populate(pointIndexTree, data, index, stride); + tbb::parallel_for(leafManager.leafRange(), populate); +} + + +//////////////////////////////////////// + + +template +inline void +convertPointDataGridPosition( PositionAttribute& positionAttribute, + const PointDataGridT& grid, + const std::vector& pointOffsets, + const Index64 startOffset, + const FilterT& filter, + const bool inCoreOnly) +{ + using TreeType = typename PointDataGridT::TreeType; + using LeafManagerT = typename tree::LeafManager; + + using point_conversion_internal::ConvertPointDataGridPositionOp; + + const TreeType& tree = grid.tree(); + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const size_t positionIndex = iter->attributeSet().find("P"); + + positionAttribute.expand(); + LeafManagerT leafManager(tree); + ConvertPointDataGridPositionOp convert( + positionAttribute, pointOffsets, startOffset, grid.transform(), positionIndex, + filter, inCoreOnly); + tbb::parallel_for(leafManager.leafRange(), convert); + positionAttribute.compact(); +} + + +//////////////////////////////////////// + + +template +inline void +convertPointDataGridAttribute( TypedAttribute& attribute, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const unsigned arrayIndex, + const Index stride, + const FilterT& filter, + const bool inCoreOnly) +{ + using LeafManagerT = typename tree::LeafManager; + + using point_conversion_internal::ConvertPointDataGridAttributeOp; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + attribute.expand(); + LeafManagerT leafManager(tree); + ConvertPointDataGridAttributeOp convert( + attribute, pointOffsets, startOffset, arrayIndex, stride, + filter, inCoreOnly); + tbb::parallel_for(leafManager.leafRange(), convert); + attribute.compact(); +} + + +//////////////////////////////////////// + + +template +inline void +convertPointDataGridGroup( Group& group, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const AttributeSet::Descriptor::GroupIndex index, + const FilterT& filter, + const bool inCoreOnly) +{ + using LeafManagerT= typename tree::LeafManager; + + using point_conversion_internal::ConvertPointDataGridGroupOp; + + auto iter = tree.cbeginLeaf(); + if (!iter) return; + + LeafManagerT leafManager(tree); + ConvertPointDataGridGroupOp convert( + group, pointOffsets, startOffset, index, + filter, inCoreOnly); + tbb::parallel_for(leafManager.leafRange(), convert); + + // must call this after modifying point groups in parallel + + group.finalize(); +} + +template +inline float +computeVoxelSize( const PositionWrapper& positions, + const uint32_t pointsPerVoxel, + const math::Mat4d transform, + const Index decimalPlaces, + InterrupterT* const interrupter) +{ + using namespace point_conversion_internal; + + struct Local { + + static bool voxelSizeFromVolume(const double volume, + const size_t estimatedVoxelCount, + float& voxelSize) + { + // dictated by the math::ScaleMap limit + static const double minimumVoxelVolume(3e-15); + static const double maximumVoxelVolume(std::numeric_limits::max()); + + double voxelVolume = volume / static_cast(estimatedVoxelCount); + bool valid = true; + + if (voxelVolume < minimumVoxelVolume) { + voxelVolume = minimumVoxelVolume; + valid = false; + } + else if (voxelVolume > maximumVoxelVolume) { + voxelVolume = maximumVoxelVolume; + valid = false; + } + + voxelSize = static_cast(math::Pow(voxelVolume, 1.0/3.0)); + return valid; + } + + static float truncate(const float voxelSize, Index decPlaces) + { + float truncatedVoxelSize = voxelSize; + + // attempt to truncate from decPlaces -> 11 + for (int i = decPlaces; i < 11; i++) { + truncatedVoxelSize = static_cast(math::Truncate(double(voxelSize), i)); + if (truncatedVoxelSize != 0.0f) break; + } + + return truncatedVoxelSize; + } + }; + + if (pointsPerVoxel == 0) OPENVDB_THROW(ValueError, "Points per voxel cannot be zero."); + + // constructed with the default voxel size as specified by openvdb interface values + + float voxelSize(0.1f); + + const size_t numPoints = positions.size(); + + // return the default voxel size if we have zero or only 1 point + + if (numPoints <= 1) return voxelSize; + + size_t targetVoxelCount(numPoints / size_t(pointsPerVoxel)); + if (targetVoxelCount == 0) targetVoxelCount++; + + // calculate the world space, transform-oriented bounding box + + math::Mat4d inverseTransform = transform.inverse(); + inverseTransform = math::unit(inverseTransform); + + tbb::blocked_range range(0, numPoints); + CalculatePositionBounds calculateBounds(positions, inverseTransform); + tbb::parallel_reduce(range, calculateBounds); + + BBoxd bbox = calculateBounds.getBoundingBox(); + + // return default size if points are coincident + + if (bbox.min() == bbox.max()) return voxelSize; + + double volume = bbox.volume(); + + // handle points that are collinear or coplanar by expanding the volume + + if (math::isApproxZero(volume)) { + Vec3d extents = bbox.extents().sorted().reversed(); + if (math::isApproxZero(extents[1])) { + // colinear (maxExtent^3) + volume = extents[0]*extents[0]*extents[0]; + } + else { + // coplanar (maxExtent*nextMaxExtent^2) + volume = extents[0]*extents[1]*extents[1]; + } + } + + double previousVolume = volume; + + if (!Local::voxelSizeFromVolume(volume, targetVoxelCount, voxelSize)) { + OPENVDB_LOG_DEBUG("Out of range, clamping voxel size."); + return voxelSize; + } + + size_t previousVoxelCount(0); + size_t voxelCount(1); + + if (interrupter) interrupter->start("Computing voxel size"); + + while (voxelCount > previousVoxelCount) + { + math::Transform::Ptr newTransform; + + if (!math::isIdentity(transform)) + { + // if using a custom transform, pre-scale by coefficients + // which define the new voxel size + + math::Mat4d matrix(transform); + matrix.preScale(Vec3d(voxelSize) / math::getScale(matrix)); + newTransform = math::Transform::createLinearTransform(matrix); + } + else + { + newTransform = math::Transform::createLinearTransform(voxelSize); + } + + // create a mask grid of the points from the calculated voxel size + // this is the same function call as tools::createPointMask() which has + // been duplicated to provide an interrupter + + MaskGrid::Ptr mask = createGrid(false); + mask->setTransform(newTransform); + tools::PointsToMask pointMaskOp(*mask, interrupter); + pointMaskOp.addPoints(positions); + + if (interrupter && util::wasInterrupted(interrupter)) break; + + previousVoxelCount = voxelCount; + voxelCount = mask->activeVoxelCount(); + volume = math::Pow3(voxelSize) * static_cast(voxelCount); + + // stop if no change in the volume or the volume has increased + + if (volume >= previousVolume) break; + previousVolume = volume; + + const float previousVoxelSize = voxelSize; + + // compute the new voxel size and if invalid return the previous value + + if (!Local::voxelSizeFromVolume(volume, targetVoxelCount, voxelSize)) { + voxelSize = previousVoxelSize; + break; + } + + // halt convergence if the voxel size has decreased by less + // than 10% in this iteration + + if (voxelSize / previousVoxelSize > 0.9f) break; + } + + if (interrupter) interrupter->end(); + + // truncate the voxel size for readability and return the value + + return Local::truncate(voxelSize, decimalPlaces); +} + + +//////////////////////////////////////// + + +// deprecated functions + + +template +OPENVDB_DEPRECATED +inline void +convertPointDataGridPosition( PositionAttribute& positionAttribute, + const PointDataGridT& grid, + const std::vector& pointOffsets, + const Index64 startOffset, + const std::vector& includeGroups, + const std::vector& excludeGroups, + const bool inCoreOnly = false) +{ + auto leaf = grid.tree().cbeginLeaf(); + if (!leaf) return; + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + convertPointDataGridPosition(positionAttribute, grid, pointOffsets, startOffset, + filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline void +convertPointDataGridAttribute( TypedAttribute& attribute, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const unsigned arrayIndex, + const Index stride, + const std::vector& includeGroups, + const std::vector& excludeGroups, + const bool inCoreOnly = false) +{ + auto leaf = tree.cbeginLeaf(); + if (!leaf) return; + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + convertPointDataGridAttribute(attribute, tree, pointOffsets, startOffset, + arrayIndex, stride, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline void +convertPointDataGridGroup( Group& group, + const PointDataTreeT& tree, + const std::vector& pointOffsets, + const Index64 startOffset, + const AttributeSet::Descriptor::GroupIndex index, + const std::vector& includeGroups, + const std::vector& excludeGroups, + const bool inCoreOnly = false) +{ + auto leaf = tree.cbeginLeaf(); + if (!leaf) return; + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + convertPointDataGridGroup(group, tree, pointOffsets, startOffset, + index, filter, inCoreOnly); +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_CONVERSION_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointCount.h b/openvdb/points/PointCount.h new file mode 100644 index 00000000..c113b42a --- /dev/null +++ b/openvdb/points/PointCount.h @@ -0,0 +1,325 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/PointCount.h +/// +/// @author Dan Bailey +/// +/// @brief Methods for counting points in VDB Point grids. + +#ifndef OPENVDB_POINTS_POINT_COUNT_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_COUNT_HAS_BEEN_INCLUDED + +#include + +#include "PointDataGrid.h" +#include "PointMask.h" +#include "IndexFilter.h" + +#include + +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Count the total number of points in a PointDataTree +/// @param tree the PointDataTree in which to count the points +/// @param filter an optional index filter +/// @param inCoreOnly if true, points in out-of-core leaf nodes are not counted +/// @param threaded enable or disable threading (threading is enabled by default) +template +inline Index64 pointCount( const PointDataTreeT& tree, + const FilterT& filter = NullFilter(), + const bool inCoreOnly = false, + const bool threaded = true); + + +/// @brief Populate an array of cumulative point offsets per leaf node. +/// @param pointOffsets array of offsets to be populated +/// @param tree the PointDataTree from which to populate the offsets +/// @param filter an optional index filter +/// @param inCoreOnly if true, points in out-of-core leaf nodes are ignored +/// @param threaded enable or disable threading (threading is enabled by default) +/// @return The final cumulative point offset. +template +inline Index64 pointOffsets(std::vector& pointOffsets, + const PointDataTreeT& tree, + const FilterT& filter = NullFilter(), + const bool inCoreOnly = false, + const bool threaded = true); + + +/// @brief Generate a new grid with voxel values to store the number of points per voxel +/// @param grid the PointDataGrid to use to compute the count grid +/// @param filter an optional index filter +/// @note The return type of the grid must be an integer or floating-point scalar grid. +template ::Type, + typename FilterT = NullFilter> +inline typename GridT::Ptr +pointCountGrid( const PointDataGridT& grid, + const FilterT& filter = NullFilter()); + + +/// @brief Generate a new grid that uses the supplied transform with voxel values to store the +/// number of points per voxel. +/// @param grid the PointDataGrid to use to compute the count grid +/// @param transform the transform to use to compute the count grid +/// @param filter an optional index filter +/// @note The return type of the grid must be an integer or floating-point scalar grid. +template ::Type, + typename FilterT = NullFilter> +inline typename GridT::Ptr +pointCountGrid( const PointDataGridT& grid, + const openvdb::math::Transform& transform, + const FilterT& filter = NullFilter()); + + +//////////////////////////////////////// + + +template +Index64 pointCount(const PointDataTreeT& tree, + const FilterT& filter, + const bool inCoreOnly, + const bool threaded) +{ + using LeafManagerT = tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + + auto countLambda = + [&filter, &inCoreOnly] (const LeafRangeT& range, Index64 sum) -> Index64 { + for (const auto& leaf : range) { + if (inCoreOnly && leaf.buffer().isOutOfCore()) continue; + auto state = filter.state(leaf); + if (state == index::ALL) { + sum += leaf.pointCount(); + } else if (state != index::NONE) { + sum += iterCount(leaf.beginIndexAll(filter)); + } + } + return sum; + }; + + LeafManagerT leafManager(tree); + if (threaded) { + return tbb::parallel_reduce(leafManager.leafRange(), Index64(0), countLambda, + [] (Index64 n, Index64 m) -> Index64 { return n + m; }); + } + else { + return countLambda(leafManager.leafRange(), Index64(0)); + } +} + + +template +Index64 pointOffsets( std::vector& pointOffsets, + const PointDataTreeT& tree, + const FilterT& filter, + const bool inCoreOnly, + const bool threaded) +{ + using LeafT = typename PointDataTreeT::LeafNodeType; + using LeafManagerT = typename tree::LeafManager; + + // allocate and zero values in point offsets array + + pointOffsets.assign(tree.leafCount(), Index64(0)); + + // compute total points per-leaf + + LeafManagerT leafManager(tree); + leafManager.foreach( + [&pointOffsets, &filter, &inCoreOnly](const LeafT& leaf, size_t pos) { + if (inCoreOnly && leaf.buffer().isOutOfCore()) return; + auto state = filter.state(leaf); + if (state == index::ALL) { + pointOffsets[pos] = leaf.pointCount(); + } else if (state != index::NONE) { + pointOffsets[pos] = iterCount(leaf.beginIndexAll(filter)); + } + }, + threaded); + + // turn per-leaf totals into cumulative leaf totals + + Index64 pointOffset(pointOffsets[0]); + for (size_t n = 1; n < pointOffsets.size(); n++) { + pointOffset += pointOffsets[n]; + pointOffsets[n] = pointOffset; + } + + return pointOffset; +} + + +template +typename GridT::Ptr +pointCountGrid( const PointDataGridT& points, + const FilterT& filter) +{ + static_assert( std::is_integral::value || + std::is_floating_point::value, + "openvdb::points::pointCountGrid must return an integer or floating-point scalar grid"); + + // This is safe because the PointDataGrid can only be modified by the deformer + using AdapterT = TreeAdapter; + auto& nonConstPoints = const_cast(points); + + return point_mask_internal::convertPointsToScalar( + nonConstPoints, filter); +} + + +template +typename GridT::Ptr +pointCountGrid( const PointDataGridT& points, + const openvdb::math::Transform& transform, + const FilterT& filter) +{ + static_assert( std::is_integral::value || + std::is_floating_point::value, + "openvdb::points::pointCountGrid must return an integer or floating-point scalar grid"); + + // This is safe because the PointDataGrid can only be modified by the deformer + using AdapterT = TreeAdapter; + auto& nonConstPoints = const_cast(points); + + NullDeformer deformer; + return point_mask_internal::convertPointsToScalar( + nonConstPoints, transform, filter, deformer); +} + + +//////////////////////////////////////// + + +// deprecated functions + + +template +OPENVDB_DEPRECATED +inline Index64 pointCount(const PointDataTreeT& tree, const bool inCoreOnly) +{ + NullFilter filter; + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 activePointCount(const PointDataTreeT& tree, const bool inCoreOnly = true) +{ + ActiveFilter filter; + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 inactivePointCount(const PointDataTreeT& tree, const bool inCoreOnly = true) +{ + InactiveFilter filter; + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 groupPointCount(const PointDataTreeT& tree, const Name& name, + const bool inCoreOnly = true) +{ + auto iter = tree.cbeginLeaf(); + if (!iter || !iter->attributeSet().descriptor().hasGroup(name)) { + return Index64(0); + } + GroupFilter filter(name, iter->attributeSet()); + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 activeGroupPointCount(const PointDataTreeT& tree, const Name& name, + const bool inCoreOnly = true) +{ + auto iter = tree.cbeginLeaf(); + if (!iter || !iter->attributeSet().descriptor().hasGroup(name)) { + return Index64(0); + } + BinaryFilter filter(GroupFilter(name, iter->attributeSet()), ActiveFilter()); + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 inactiveGroupPointCount(const PointDataTreeT& tree, const Name& name, + const bool inCoreOnly = true) +{ + auto iter = tree.cbeginLeaf(); + if (!iter || !iter->attributeSet().descriptor().hasGroup(name)) { + return Index64(0); + } + BinaryFilter filter(GroupFilter(name, iter->attributeSet()), InactiveFilter()); + return pointCount(tree, filter, inCoreOnly); +} + + +template +OPENVDB_DEPRECATED +inline Index64 getPointOffsets(std::vector& offsets, const PointDataTreeT& tree, + const std::vector& includeGroups, + const std::vector& excludeGroups, + const bool inCoreOnly = false) +{ + MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet()); + return pointOffsets(offsets, tree, filter, inCoreOnly); +} + + +template ::Type> +OPENVDB_DEPRECATED +inline typename GridT::Ptr +pointCountGrid(const PointDataGridT& grid, + const std::vector& includeGroups, + const std::vector& excludeGroups) +{ + auto leaf = grid.tree().cbeginLeaf(); + if (!leaf) return GridT::create(0); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + return pointCountGrid(grid, filter); +} + + +template ::Type> +OPENVDB_DEPRECATED +inline typename GridT::Ptr +pointCountGrid(const PointDataGridT& grid, + const openvdb::math::Transform& transform, + const std::vector& includeGroups, + const std::vector& excludeGroups) +{ + auto leaf = grid.tree().cbeginLeaf(); + if (!leaf) return GridT::create(0); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + return pointCountGrid(grid, transform, filter); +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_COUNT_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointDataGrid.h b/openvdb/points/PointDataGrid.h new file mode 100644 index 00000000..1053ea83 --- /dev/null +++ b/openvdb/points/PointDataGrid.h @@ -0,0 +1,1736 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey +/// +/// @file points/PointDataGrid.h +/// +/// @brief Attribute-owned data structure for points. Point attributes are +/// stored in leaf nodes and ordered by voxel for fast random and +/// sequential access. + +#ifndef OPENVDB_POINTS_POINT_DATA_GRID_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_DATA_GRID_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include "AttributeArray.h" +#include "AttributeArrayString.h" +#include "AttributeGroup.h" +#include "AttributeSet.h" +#include "StreamCompression.h" +#include // std::memcpy +#include +#include +#include +#include // std::is_same +#include // std::pair, std::make_pair +#include + +#include //for boost::mpl::vector +#include +#include + +class TestPointDataLeaf; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +namespace io +{ + +/// @brief openvdb::io::readCompressedValues specialized on PointDataIndex32 arrays to +/// ignore the value mask, use a larger block size and use 16-bit size instead of 64-bit +template<> +inline void +readCompressedValues( std::istream& is, PointDataIndex32* destBuf, Index destCount, + const util::NodeMask<3>& /*valueMask*/, bool /*fromHalf*/) +{ + using compression::bloscDecompress; + + const bool seek = destBuf == nullptr; + + const size_t destBytes = destCount*sizeof(PointDataIndex32); + const size_t maximumBytes = std::numeric_limits::max(); + if (destBytes >= maximumBytes) { + OPENVDB_THROW(openvdb::IoError, "Cannot read more than " << + maximumBytes << " bytes in voxel values.") + } + + uint16_t bytes16; + + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(is); + + if (seek && meta) { + // buffer size temporarily stored in the StreamMetadata pass + // to avoid having to perform an expensive disk read for 2-bytes + bytes16 = static_cast(meta->pass()); + // seek over size of the compressed buffer + is.seekg(sizeof(uint16_t), std::ios_base::cur); + } + else { + // otherwise read from disk + is.read(reinterpret_cast(&bytes16), sizeof(uint16_t)); + } + + if (bytes16 == std::numeric_limits::max()) { + // read or seek uncompressed data + if (seek) { + is.seekg(destBytes, std::ios_base::cur); + } + else { + is.read(reinterpret_cast(destBuf), destBytes); + } + } + else { + // read or seek uncompressed data + if (seek) { + is.seekg(int(bytes16), std::ios_base::cur); + } + else { + // decompress into the destination buffer + std::unique_ptr bloscBuffer(new char[int(bytes16)]); + is.read(bloscBuffer.get(), bytes16); + std::unique_ptr buffer = bloscDecompress( bloscBuffer.get(), + destBytes, + /*resize=*/false); + std::memcpy(destBuf, buffer.get(), destBytes); + } + } +} + +/// @brief openvdb::io::writeCompressedValues specialized on PointDataIndex32 arrays to +/// ignore the value mask, use a larger block size and use 16-bit size instead of 64-bit +template<> +inline void +writeCompressedValues( std::ostream& os, PointDataIndex32* srcBuf, Index srcCount, + const util::NodeMask<3>& /*valueMask*/, + const util::NodeMask<3>& /*childMask*/, bool /*toHalf*/) +{ + using compression::bloscCompress; + + const size_t srcBytes = srcCount*sizeof(PointDataIndex32); + const size_t maximumBytes = std::numeric_limits::max(); + if (srcBytes >= maximumBytes) { + OPENVDB_THROW(openvdb::IoError, "Cannot write more than " << + maximumBytes << " bytes in voxel values.") + } + + const char* charBuffer = reinterpret_cast(srcBuf); + + size_t compressedBytes; + std::unique_ptr buffer = bloscCompress( charBuffer, srcBytes, + compressedBytes, /*resize=*/false); + + if (compressedBytes > 0) { + auto bytes16 = static_cast(compressedBytes); // clamp to 16-bit unsigned integer + os.write(reinterpret_cast(&bytes16), sizeof(uint16_t)); + os.write(reinterpret_cast(buffer.get()), compressedBytes); + } + else { + auto bytes16 = static_cast(maximumBytes); // max value indicates uncompressed + os.write(reinterpret_cast(&bytes16), sizeof(uint16_t)); + os.write(reinterpret_cast(srcBuf), srcBytes); + } +} + +template +inline void +writeCompressedValuesSize(std::ostream& os, const T* srcBuf, Index srcCount) +{ + using compression::bloscCompressedSize; + + const size_t srcBytes = srcCount*sizeof(T); + const size_t maximumBytes = std::numeric_limits::max(); + if (srcBytes >= maximumBytes) { + OPENVDB_THROW(openvdb::IoError, "Cannot write more than " << + maximumBytes << " bytes in voxel values.") + } + + const char* charBuffer = reinterpret_cast(srcBuf); + + // calculate voxel buffer size after compression + size_t compressedBytes = bloscCompressedSize(charBuffer, srcBytes); + + if (compressedBytes > 0) { + auto bytes16 = static_cast(compressedBytes); // clamp to 16-bit unsigned integer + os.write(reinterpret_cast(&bytes16), sizeof(uint16_t)); + } + else { + auto bytes16 = static_cast(maximumBytes); // max value indicates uncompressed + os.write(reinterpret_cast(&bytes16), sizeof(uint16_t)); + } +} + +} // namespace io + + +// forward declaration +namespace tree { + template struct SameLeafConfig; +} + + +//////////////////////////////////////// + + +namespace points { + + +// forward declaration +template class PointDataLeafNode; + +/// @brief Point index tree configured to match the default VDB configurations. +using PointDataTree = tree::Tree, 4>, 5>>>; + + +/// @brief Point data grid. +using PointDataGrid = Grid; + + +/// @brief Deep copy the descriptor across all leaf nodes. +/// +/// @param tree the PointDataTree. +/// +/// @return the new descriptor. +/// +/// @note This method will fail if the Descriptors in the tree are not all identical. +template +inline AttributeSet::Descriptor::Ptr +makeDescriptorUnique(PointDataTreeT& tree); + + +/// @brief Toggle the streaming mode on all attributes in the tree to collapse the attributes +/// after deconstructing a bound AttributeHandle to each array. This results in better +/// memory efficiency when the data is streamed into another data structure +/// (typically for rendering). +/// +/// @param tree the PointDataTree. +/// @param on @c true to enable streaming +/// +/// @note Multiple threads cannot safely access the same AttributeArray when using streaming. +template +inline void +setStreamingMode(PointDataTreeT& tree, bool on = true); + + +/// @brief Sequentially pre-fetch all delayed-load voxel and attribute data from disk in order +/// to accelerate subsequent random access. +/// +/// @param tree the PointDataTree. +/// @param position if enabled, prefetch the position attribute (default is on) +/// @param otherAttributes if enabled, prefetch all other attributes (default is on) +template +inline void +prefetch(PointDataTreeT& tree, bool position = true, bool otherAttributes = true); + + +//////////////////////////////////////// + + +template +class PointDataLeafNode : public tree::LeafNode, io::MultiPass { + +public: + using LeafNodeType = PointDataLeafNode; + using Ptr = std::shared_ptr; + + using ValueType = T; + using ValueTypePair = std::pair; + using IndexArray = std::vector; + + using Descriptor = AttributeSet::Descriptor; + + //////////////////////////////////////// + + // The following methods had to be copied from the LeafNode class + // to make the derived PointDataLeafNode class compatible with the tree structure. + + using BaseLeaf = tree::LeafNode; + using NodeMaskType = util::NodeMask; + + using BaseLeaf::LOG2DIM; + using BaseLeaf::TOTAL; + using BaseLeaf::DIM; + using BaseLeaf::NUM_VALUES; + using BaseLeaf::NUM_VOXELS; + using BaseLeaf::SIZE; + using BaseLeaf::LEVEL; + + /// Default constructor + PointDataLeafNode() + : mAttributeSet(new AttributeSet) { } + + ~PointDataLeafNode() = default; + + /// Construct using deep copy of other PointDataLeafNode + explicit PointDataLeafNode(const PointDataLeafNode& other) + : BaseLeaf(other) + , mAttributeSet(new AttributeSet(*other.mAttributeSet)) { } + + /// Construct using supplied origin, value and active status + explicit + PointDataLeafNode(const Coord& coords, const T& value = zeroVal(), bool active = false) + : BaseLeaf(coords, zeroVal(), active) + , mAttributeSet(new AttributeSet) { assertNonModifiableUnlessZero(value); } + + /// Construct using supplied origin, value and active status + /// use attribute map from another PointDataLeafNode + PointDataLeafNode(const PointDataLeafNode& other, const Coord& coords, + const T& value = zeroVal(), bool active = false) + : BaseLeaf(coords, zeroVal(), active) + , mAttributeSet(new AttributeSet(*other.mAttributeSet)) + { + assertNonModifiableUnlessZero(value); + } + + // Copy-construct from a PointIndexLeafNode with the same configuration but a different ValueType. + template + PointDataLeafNode(const tools::PointIndexLeafNode& other) + : BaseLeaf(other) + , mAttributeSet(new AttributeSet) { } + + // Copy-construct from a LeafNode with the same configuration but a different ValueType. + // Used for topology copies - explicitly sets the value (background) to zeroVal + template + PointDataLeafNode(const tree::LeafNode& other, const T& value, TopologyCopy) + : BaseLeaf(other, zeroVal(), TopologyCopy()) + , mAttributeSet(new AttributeSet) { assertNonModifiableUnlessZero(value); } + + // Copy-construct from a LeafNode with the same configuration but a different ValueType. + // Used for topology copies - explicitly sets the on and off value (background) to zeroVal + template + PointDataLeafNode(const tree::LeafNode& other, const T& /*offValue*/, const T& /*onValue*/, TopologyCopy) + : BaseLeaf(other, zeroVal(), zeroVal(), TopologyCopy()) + , mAttributeSet(new AttributeSet) { } + + PointDataLeafNode(PartialCreate, const Coord& coords, + const T& value = zeroVal(), bool active = false) + : BaseLeaf(PartialCreate(), coords, value, active) + , mAttributeSet(new AttributeSet) { assertNonModifiableUnlessZero(value); } + +public: + + /// Retrieve the attribute set. + const AttributeSet& attributeSet() const { return *mAttributeSet; } + + /// @brief Create a new attribute set. Existing attributes will be removed. + void initializeAttributes(const Descriptor::Ptr& descriptor, const Index arrayLength, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + /// @brief Clear the attribute set. + void clearAttributes(const bool updateValueMask = true, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + + /// @brief Returns @c true if an attribute with this index exists. + /// @param pos Index of the attribute + bool hasAttribute(const size_t pos) const; + /// @brief Returns @c true if an attribute with this name exists. + /// @param attributeName Name of the attribute + bool hasAttribute(const Name& attributeName) const; + + /// @brief Append an attribute to the leaf. + /// @param expected Existing descriptor is expected to match this parameter. + /// @param replacement New descriptor to replace the existing one. + /// @param pos Index of the new attribute in the descriptor replacement. + /// @param strideOrTotalSize Stride of the attribute array (if constantStride), total size otherwise + /// @param constantStride if @c false, stride is interpreted as total size of the array + /// @param lock an optional scoped registry lock to avoid contention + AttributeArray::Ptr appendAttribute(const Descriptor& expected, Descriptor::Ptr& replacement, + const size_t pos, const Index strideOrTotalSize = 1, + const bool constantStride = true, + const AttributeArray::ScopedRegistryLock* lock = nullptr); + + /// @brief Drop list of attributes. + /// @param pos vector of attribute indices to drop + /// @param expected Existing descriptor is expected to match this parameter. + /// @param replacement New descriptor to replace the existing one. + void dropAttributes(const std::vector& pos, + const Descriptor& expected, Descriptor::Ptr& replacement); + /// @brief Reorder attribute set. + /// @param replacement New descriptor to replace the existing one. + void reorderAttributes(const Descriptor::Ptr& replacement); + /// @brief Rename attributes in attribute set (order must remain the same). + /// @param expected Existing descriptor is expected to match this parameter. + /// @param replacement New descriptor to replace the existing one. + void renameAttributes(const Descriptor& expected, Descriptor::Ptr& replacement); + /// @brief Compact all attributes in attribute set. + void compactAttributes(); + + /// @brief Replace the underlying attribute set with the given @a attributeSet. + /// @details This leaf will assume ownership of the given attribute set. The descriptors must + /// match and the voxel offsets values will need updating if the point order is different. + /// @throws ValueError if @a allowMismatchingDescriptors is @c false and the descriptors + /// do not match + void replaceAttributeSet(AttributeSet* attributeSet, bool allowMismatchingDescriptors = false); + + /// @brief Replace the descriptor with a new one + /// The new Descriptor must exactly match the old one + void resetDescriptor(const Descriptor::Ptr& replacement); + + /// @brief Sets all of the voxel offset values on this leaf, from the given vector + /// of @a offsets. If @a updateValueMask is true, then the active value mask will + /// be updated so voxels with points are active and empty voxels are inactive. + void setOffsets(const std::vector& offsets, const bool updateValueMask = true); + + /// @brief Throws an error if the voxel values on this leaf are not monotonically + /// increasing or within the bounds of the attribute arrays + void validateOffsets() const; + + /// @brief Read-write attribute array reference from index + /// @details Attribute arrays can be shared across leaf nodes, so non-const + /// access will deep-copy the array to make it unique. Always prefer + /// accessing const arrays where possible to eliminate this copying. + /// { + AttributeArray& attributeArray(const size_t pos); + const AttributeArray& attributeArray(const size_t pos) const; + const AttributeArray& constAttributeArray(const size_t pos) const; + /// } + /// @brief Read-write attribute array reference from name + /// @details Attribute arrays can be shared across leaf nodes, so non-const + /// access will deep-copy the array to make it unique. Always prefer + /// accessing const arrays where possible to eliminate this copying. + /// { + AttributeArray& attributeArray(const Name& attributeName); + const AttributeArray& attributeArray(const Name& attributeName) const; + const AttributeArray& constAttributeArray(const Name& attributeName) const; + /// } + + /// @brief Read-only group handle from group index + GroupHandle groupHandle(const AttributeSet::Descriptor::GroupIndex& index) const; + /// @brief Read-only group handle from group name + GroupHandle groupHandle(const Name& group) const; + /// @brief Read-write group handle from group index + GroupWriteHandle groupWriteHandle(const AttributeSet::Descriptor::GroupIndex& index); + /// @brief Read-write group handle from group name + GroupWriteHandle groupWriteHandle(const Name& name); + + /// @brief Compute the total point count for the leaf + Index64 pointCount() const; + /// @brief Compute the total active (on) point count for the leaf + Index64 onPointCount() const; + /// @brief Compute the total inactive (off) point count for the leaf + Index64 offPointCount() const; + /// @brief Compute the point count in a specific group for the leaf + Index64 groupPointCount(const Name& groupName) const; + + /// @brief Activate voxels with non-zero points, deactivate voxels with zero points. + void updateValueMask(); + + //////////////////////////////////////// + + void setOffsetOn(Index offset, const ValueType& val); + void setOffsetOnly(Index offset, const ValueType& val); + + /// @brief Return @c true if the given node (which may have a different @c ValueType + /// than this node) has the same active value topology as this node. + template + bool hasSameTopology(const PointDataLeafNode* other) const { + return BaseLeaf::hasSameTopology(other); + } + + /// Check for buffer, state and origin equivalence first. + /// If this returns true, do a deeper comparison on the attribute set to check + bool operator==(const PointDataLeafNode& other) const { + if(BaseLeaf::operator==(other) != true) return false; + return (*this->mAttributeSet == *other.mAttributeSet); + } + + bool operator!=(const PointDataLeafNode& other) const { return !(other == *this); } + + void addLeaf(PointDataLeafNode*) {} + template + void addLeafAndCache(PointDataLeafNode*, AccessorT&) {} + + //@{ + /// @brief Return a pointer to this node. + PointDataLeafNode* touchLeaf(const Coord&) { return this; } + template + PointDataLeafNode* touchLeafAndCache(const Coord&, AccessorT&) { return this; } + + template + NodeT* probeNodeAndCache(const Coord&, AccessorT&) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + PointDataLeafNode* probeLeaf(const Coord&) { return this; } + template + PointDataLeafNode* probeLeafAndCache(const Coord&, AccessorT&) { return this; } + //@} + + //@{ + /// @brief Return a @const pointer to this node. + const PointDataLeafNode* probeConstLeaf(const Coord&) const { return this; } + template + const PointDataLeafNode* probeConstLeafAndCache(const Coord&, AccessorT&) const { return this; } + template + const PointDataLeafNode* probeLeafAndCache(const Coord&, AccessorT&) const { return this; } + const PointDataLeafNode* probeLeaf(const Coord&) const { return this; } + template + const NodeT* probeConstNodeAndCache(const Coord&, AccessorT&) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + + // I/O methods + + void readTopology(std::istream& is, bool fromHalf = false); + void writeTopology(std::ostream& os, bool toHalf = false) const; + + Index buffers() const; + + void readBuffers(std::istream& is, bool fromHalf = false); + void readBuffers(std::istream& is, const CoordBBox&, bool fromHalf = false); + void writeBuffers(std::ostream& os, bool toHalf = false) const; + + + Index64 memUsage() const; + + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// @brief Return the bounding box of this node, i.e., the full index space + /// spanned by this leaf node. + CoordBBox getNodeBoundingBox() const; + + //////////////////////////////////////// + + // Disable all write methods to avoid unintentional changes + // to the point-array offsets. + + void assertNonmodifiable() { + assert(false && "Cannot modify voxel values in a PointDataTree."); + } + + // some methods silently ignore attempts to modify the + // point-array offsets if a zero value is used + + void assertNonModifiableUnlessZero(const ValueType& value) { + if (value != zeroVal()) this->assertNonmodifiable(); + } + + void setActiveState(const Coord& xyz, bool on) { BaseLeaf::setActiveState(xyz, on); } + void setActiveState(Index offset, bool on) { BaseLeaf::setActiveState(offset, on); } + + void setValueOnly(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOnly(Index, const ValueType&) { assertNonmodifiable(); } + + void setValueOff(const Coord& xyz) { BaseLeaf::setValueOff(xyz); } + void setValueOff(Index offset) { BaseLeaf::setValueOff(offset); } + + void setValueOff(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOff(Index, const ValueType&) { assertNonmodifiable(); } + + void setValueOn(const Coord& xyz) { BaseLeaf::setValueOn(xyz); } + void setValueOn(Index offset) { BaseLeaf::setValueOn(offset); } + + void setValueOn(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOn(Index, const ValueType&) { assertNonmodifiable(); } + + void setValue(const Coord&, const ValueType&) { assertNonmodifiable(); } + + void setValuesOn() { BaseLeaf::setValuesOn(); } + void setValuesOff() { BaseLeaf::setValuesOff(); } + + template + void modifyValue(Index, const ModifyOp&) { assertNonmodifiable(); } + + template + void modifyValue(const Coord&, const ModifyOp&) { assertNonmodifiable(); } + + template + void modifyValueAndActiveState(const Coord&, const ModifyOp&) { assertNonmodifiable(); } + + // clipping is not yet supported + void clip(const CoordBBox&, const ValueType& value) { assertNonModifiableUnlessZero(value); } + + void fill(const CoordBBox&, const ValueType&, bool); + void fill(const ValueType& value) { assertNonModifiableUnlessZero(value); } + void fill(const ValueType&, bool); + + template + void setValueOnlyAndCache(const Coord&, const ValueType&, AccessorT&) {assertNonmodifiable();} + + template + void modifyValueAndActiveStateAndCache(const Coord&, const ModifyOp&, AccessorT&) { + assertNonmodifiable(); + } + + template + void setValueOffAndCache(const Coord&, const ValueType&, AccessorT&) { assertNonmodifiable(); } + + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT& parent) { + BaseLeaf::setActiveStateAndCache(xyz, on, parent); + } + + void resetBackground(const ValueType&, const ValueType& newBackground) { + assertNonModifiableUnlessZero(newBackground); + } + + void signedFloodFill(const ValueType&) { assertNonmodifiable(); } + void signedFloodFill(const ValueType&, const ValueType&) { assertNonmodifiable(); } + + void negate() { assertNonmodifiable(); } + + friend class ::TestPointDataLeaf; + + using ValueOn = typename BaseLeaf::ValueOn; + using ValueOff = typename BaseLeaf::ValueOff; + using ValueAll = typename BaseLeaf::ValueAll; + +private: + std::unique_ptr mAttributeSet; + uint16_t mVoxelBufferSize = 0; + +protected: + using ChildOn = typename BaseLeaf::ChildOn; + using ChildOff = typename BaseLeaf::ChildOff; + using ChildAll = typename BaseLeaf::ChildAll; + + using MaskOnIterator = typename NodeMaskType::OnIterator; + using MaskOffIterator = typename NodeMaskType::OffIterator; + using MaskDenseIterator = typename NodeMaskType::DenseIterator; + + // During topology-only construction, access is needed + // to protected/private members of other template instances. + template friend class PointDataLeafNode; + + friend class tree::IteratorBase; + friend class tree::IteratorBase; + friend class tree::IteratorBase; + +public: + /// @brief Leaf value voxel iterator + ValueVoxelCIter beginValueVoxel(const Coord& ijk) const; + +public: + +#if defined(_MSC_VER) && (_MSC_VER < 1914) + using ValueOnIter = typename BaseLeaf::ValueIter< + MaskOnIterator, PointDataLeafNode, const ValueType, ValueOn>; + using ValueOnCIter = typename BaseLeaf::ValueIter< + MaskOnIterator, const PointDataLeafNode, const ValueType, ValueOn>; + using ValueOffIter = typename BaseLeaf::ValueIter< + MaskOffIterator, PointDataLeafNode, const ValueType, ValueOff>; + using ValueOffCIter = typename BaseLeaf::ValueIter< + MaskOffIterator,const PointDataLeafNode,const ValueType,ValueOff>; + using ValueAllIter = typename BaseLeaf::ValueIter< + MaskDenseIterator, PointDataLeafNode, const ValueType, ValueAll>; + using ValueAllCIter = typename BaseLeaf::ValueIter< + MaskDenseIterator,const PointDataLeafNode,const ValueType,ValueAll>; + using ChildOnIter = typename BaseLeaf::ChildIter< + MaskOnIterator, PointDataLeafNode, ChildOn>; + using ChildOnCIter = typename BaseLeaf::ChildIter< + MaskOnIterator, const PointDataLeafNode, ChildOn>; + using ChildOffIter = typename BaseLeaf::ChildIter< + MaskOffIterator, PointDataLeafNode, ChildOff>; + using ChildOffCIter = typename BaseLeaf::ChildIter< + MaskOffIterator, const PointDataLeafNode, ChildOff>; + using ChildAllIter = typename BaseLeaf::DenseIter< + PointDataLeafNode, ValueType, ChildAll>; + using ChildAllCIter = typename BaseLeaf::DenseIter< + const PointDataLeafNode, const ValueType, ChildAll>; +#else + using ValueOnIter = typename BaseLeaf::template ValueIter< + MaskOnIterator, PointDataLeafNode, const ValueType, ValueOn>; + using ValueOnCIter = typename BaseLeaf::template ValueIter< + MaskOnIterator, const PointDataLeafNode, const ValueType, ValueOn>; + using ValueOffIter = typename BaseLeaf::template ValueIter< + MaskOffIterator, PointDataLeafNode, const ValueType, ValueOff>; + using ValueOffCIter = typename BaseLeaf::template ValueIter< + MaskOffIterator,const PointDataLeafNode,const ValueType,ValueOff>; + using ValueAllIter = typename BaseLeaf::template ValueIter< + MaskDenseIterator, PointDataLeafNode, const ValueType, ValueAll>; + using ValueAllCIter = typename BaseLeaf::template ValueIter< + MaskDenseIterator,const PointDataLeafNode,const ValueType,ValueAll>; + using ChildOnIter = typename BaseLeaf::template ChildIter< + MaskOnIterator, PointDataLeafNode, ChildOn>; + using ChildOnCIter = typename BaseLeaf::template ChildIter< + MaskOnIterator, const PointDataLeafNode, ChildOn>; + using ChildOffIter = typename BaseLeaf::template ChildIter< + MaskOffIterator, PointDataLeafNode, ChildOff>; + using ChildOffCIter = typename BaseLeaf::template ChildIter< + MaskOffIterator, const PointDataLeafNode, ChildOff>; + using ChildAllIter = typename BaseLeaf::template DenseIter< + PointDataLeafNode, ValueType, ChildAll>; + using ChildAllCIter = typename BaseLeaf::template DenseIter< + const PointDataLeafNode, const ValueType, ChildAll>; +#endif + + using IndexVoxelIter = IndexIter; + using IndexAllIter = IndexIter; + using IndexOnIter = IndexIter; + using IndexOffIter = IndexIter; + + /// @brief Leaf index iterator + IndexAllIter beginIndexAll() const + { + NullFilter filter; + return this->beginIndex(filter); + } + IndexOnIter beginIndexOn() const + { + NullFilter filter; + return this->beginIndex(filter); + } + IndexOffIter beginIndexOff() const + { + NullFilter filter; + return this->beginIndex(filter); + } + + template + IndexIter beginIndex(const FilterT& filter) const; + + /// @brief Filtered leaf index iterator + template + IndexIter beginIndexAll(const FilterT& filter) const + { + return this->beginIndex(filter); + } + template + IndexIter beginIndexOn(const FilterT& filter) const + { + return this->beginIndex(filter); + } + template + IndexIter beginIndexOff(const FilterT& filter) const + { + return this->beginIndex(filter); + } + + /// @brief Leaf index iterator from voxel + IndexVoxelIter beginIndexVoxel(const Coord& ijk) const; + + /// @brief Filtered leaf index iterator from voxel + template + IndexIter beginIndexVoxel(const Coord& ijk, const FilterT& filter) const; + +#define VMASK_ this->getValueMask() + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(VMASK_.beginOn(), this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(VMASK_.beginOn(), this); } + ValueOnIter beginValueOn() { return ValueOnIter(VMASK_.beginOn(), this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(VMASK_.beginOff(), this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(VMASK_.beginOff(), this); } + ValueOffIter beginValueOff() { return ValueOffIter(VMASK_.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(VMASK_.beginDense(), this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(VMASK_.beginDense(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(VMASK_.beginDense(), this); } + + ValueOnCIter cendValueOn() const { return ValueOnCIter(VMASK_.endOn(), this); } + ValueOnCIter endValueOn() const { return ValueOnCIter(VMASK_.endOn(), this); } + ValueOnIter endValueOn() { return ValueOnIter(VMASK_.endOn(), this); } + ValueOffCIter cendValueOff() const { return ValueOffCIter(VMASK_.endOff(), this); } + ValueOffCIter endValueOff() const { return ValueOffCIter(VMASK_.endOff(), this); } + ValueOffIter endValueOff() { return ValueOffIter(VMASK_.endOff(), this); } + ValueAllCIter cendValueAll() const { return ValueAllCIter(VMASK_.endDense(), this); } + ValueAllCIter endValueAll() const { return ValueAllCIter(VMASK_.endDense(), this); } + ValueAllIter endValueAll() { return ValueAllIter(VMASK_.endDense(), this); } + + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnCIter beginChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(VMASK_.endOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffCIter beginChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(VMASK_.endOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(VMASK_.beginDense(), this); } + ChildAllCIter beginChildAll() const { return ChildAllCIter(VMASK_.beginDense(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(VMASK_.beginDense(), this); } + + ChildOnCIter cendChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnCIter endChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnIter endChildOn() { return ChildOnIter(VMASK_.endOn(), this); } + ChildOffCIter cendChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffCIter endChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffIter endChildOff() { return ChildOffIter(VMASK_.endOff(), this); } + ChildAllCIter cendChildAll() const { return ChildAllCIter(VMASK_.endDense(), this); } + ChildAllCIter endChildAll() const { return ChildAllCIter(VMASK_.endDense(), this); } + ChildAllIter endChildAll() { return ChildAllIter(VMASK_.endDense(), this); } +#undef VMASK_ +}; // struct PointDataLeafNode + +//////////////////////////////////////// + +// PointDataLeafNode implementation + +template +inline void +PointDataLeafNode::initializeAttributes(const Descriptor::Ptr& descriptor, const Index arrayLength, + const AttributeArray::ScopedRegistryLock* lock) +{ + if (descriptor->size() != 1 || + descriptor->find("P") == AttributeSet::INVALID_POS || + descriptor->valueType(0) != typeNameAsString()) + { + OPENVDB_THROW(IndexError, "Initializing attributes only allowed with one Vec3f position attribute."); + } + + mAttributeSet.reset(new AttributeSet(descriptor, arrayLength, lock)); +} + +template +inline void +PointDataLeafNode::clearAttributes(const bool updateValueMask, + const AttributeArray::ScopedRegistryLock* lock) +{ + mAttributeSet.reset(new AttributeSet(*mAttributeSet, 0, lock)); + + // zero voxel values + + this->buffer().fill(ValueType(0)); + + // if updateValueMask, also de-activate all voxels + + if (updateValueMask) this->setValuesOff(); +} + +template +inline bool +PointDataLeafNode::hasAttribute(const size_t pos) const +{ + return pos < mAttributeSet->size(); +} + +template +inline bool +PointDataLeafNode::hasAttribute(const Name& attributeName) const +{ + const size_t pos = mAttributeSet->find(attributeName); + return pos != AttributeSet::INVALID_POS; +} + +template +inline AttributeArray::Ptr +PointDataLeafNode::appendAttribute( const Descriptor& expected, Descriptor::Ptr& replacement, + const size_t pos, const Index strideOrTotalSize, + const bool constantStride, + const AttributeArray::ScopedRegistryLock* lock) +{ + return mAttributeSet->appendAttribute( + expected, replacement, pos, strideOrTotalSize, constantStride, lock); +} + +template +inline void +PointDataLeafNode::dropAttributes(const std::vector& pos, + const Descriptor& expected, Descriptor::Ptr& replacement) +{ + mAttributeSet->dropAttributes(pos, expected, replacement); +} + +template +inline void +PointDataLeafNode::reorderAttributes(const Descriptor::Ptr& replacement) +{ + mAttributeSet->reorderAttributes(replacement); +} + +template +inline void +PointDataLeafNode::renameAttributes(const Descriptor& expected, Descriptor::Ptr& replacement) +{ + mAttributeSet->renameAttributes(expected, replacement); +} + +template +inline void +PointDataLeafNode::compactAttributes() +{ + for (size_t i = 0; i < mAttributeSet->size(); i++) { + AttributeArray* array = mAttributeSet->get(i); + array->compact(); + } +} + +template +inline void +PointDataLeafNode::replaceAttributeSet(AttributeSet* attributeSet, bool allowMismatchingDescriptors) +{ + if (!attributeSet) { + OPENVDB_THROW(ValueError, "Cannot replace with a null attribute set"); + } + + if (!allowMismatchingDescriptors && mAttributeSet->descriptor() != attributeSet->descriptor()) { + OPENVDB_THROW(ValueError, "Attribute set descriptors are not equal."); + } + + mAttributeSet.reset(attributeSet); +} + +template +inline void +PointDataLeafNode::resetDescriptor(const Descriptor::Ptr& replacement) +{ + mAttributeSet->resetDescriptor(replacement); +} + +template +inline void +PointDataLeafNode::setOffsets(const std::vector& offsets, const bool updateValueMask) +{ + if (offsets.size() != LeafNodeType::NUM_VALUES) { + OPENVDB_THROW(ValueError, "Offset vector size doesn't match number of voxels.") + } + + for (Index index = 0; index < offsets.size(); ++index) { + setOffsetOnly(index, offsets[index]); + } + + if (updateValueMask) this->updateValueMask(); +} + +template +inline void +PointDataLeafNode::validateOffsets() const +{ + // Ensure all of the offset values are monotonically increasing + for (Index index = 1; index < BaseLeaf::SIZE; ++index) { + if (this->getValue(index-1) > this->getValue(index)) { + OPENVDB_THROW(ValueError, "Voxel offset values are not monotonically increasing"); + } + } + + // Ensure all attribute arrays are of equal length + for (size_t attributeIndex = 1; attributeIndex < mAttributeSet->size(); ++attributeIndex ) { + if (mAttributeSet->getConst(attributeIndex-1)->size() != mAttributeSet->getConst(attributeIndex)->size()) { + OPENVDB_THROW(ValueError, "Attribute arrays have inconsistent length"); + } + } + + // Ensure the last voxel's offset value matches the size of each attribute array + if (mAttributeSet->size() > 0 && this->getValue(BaseLeaf::SIZE-1) != mAttributeSet->getConst(0)->size()) { + OPENVDB_THROW(ValueError, "Last voxel offset value does not match attribute array length"); + } +} + +template +inline AttributeArray& +PointDataLeafNode::attributeArray(const size_t pos) +{ + if (pos >= mAttributeSet->size()) OPENVDB_THROW(LookupError, "Attribute Out Of Range - " << pos); + return *mAttributeSet->get(pos); +} + +template +inline const AttributeArray& +PointDataLeafNode::attributeArray(const size_t pos) const +{ + if (pos >= mAttributeSet->size()) OPENVDB_THROW(LookupError, "Attribute Out Of Range - " << pos); + return *mAttributeSet->getConst(pos); +} + +template +inline const AttributeArray& +PointDataLeafNode::constAttributeArray(const size_t pos) const +{ + return this->attributeArray(pos); +} + +template +inline AttributeArray& +PointDataLeafNode::attributeArray(const Name& attributeName) +{ + const size_t pos = mAttributeSet->find(attributeName); + if (pos == AttributeSet::INVALID_POS) OPENVDB_THROW(LookupError, "Attribute Not Found - " << attributeName); + return *mAttributeSet->get(pos); +} + +template +inline const AttributeArray& +PointDataLeafNode::attributeArray(const Name& attributeName) const +{ + const size_t pos = mAttributeSet->find(attributeName); + if (pos == AttributeSet::INVALID_POS) OPENVDB_THROW(LookupError, "Attribute Not Found - " << attributeName); + return *mAttributeSet->getConst(pos); +} + +template +inline const AttributeArray& +PointDataLeafNode::constAttributeArray(const Name& attributeName) const +{ + return this->attributeArray(attributeName); +} + +template +inline GroupHandle +PointDataLeafNode::groupHandle(const AttributeSet::Descriptor::GroupIndex& index) const +{ + const AttributeArray& array = this->attributeArray(index.first); + assert(isGroup(array)); + + const GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + return GroupHandle(groupArray, index.second); +} + +template +inline GroupHandle +PointDataLeafNode::groupHandle(const Name& name) const +{ + const AttributeSet::Descriptor::GroupIndex index = this->attributeSet().groupIndex(name); + return this->groupHandle(index); +} + +template +inline GroupWriteHandle +PointDataLeafNode::groupWriteHandle(const AttributeSet::Descriptor::GroupIndex& index) +{ + AttributeArray& array = this->attributeArray(index.first); + assert(isGroup(array)); + + GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + return GroupWriteHandle(groupArray, index.second); +} + +template +inline GroupWriteHandle +PointDataLeafNode::groupWriteHandle(const Name& name) +{ + const AttributeSet::Descriptor::GroupIndex index = this->attributeSet().groupIndex(name); + return this->groupWriteHandle(index); +} + +template +template +inline IndexIter +PointDataLeafNode::beginIndex(const FilterT& filter) const +{ + // generate no-op iterator if filter evaluates no indices + + if (filter.state() == index::NONE) { + return IndexIter(ValueIterT(), filter); + } + + // copy filter to ensure thread-safety + + FilterT newFilter(filter); + newFilter.reset(*this); + + using IterTraitsT = tree::IterTraits; + + // construct the value iterator and reset the filter to use this leaf + + ValueIterT valueIter = IterTraitsT::begin(*this); + + return IndexIter(valueIter, newFilter); +} + +template +inline ValueVoxelCIter +PointDataLeafNode::beginValueVoxel(const Coord& ijk) const +{ + const Index index = LeafNodeType::coordToOffset(ijk); + assert(index < BaseLeaf::SIZE); + const ValueType end = this->getValue(index); + const ValueType start = (index == 0) ? ValueType(0) : this->getValue(index - 1); + return ValueVoxelCIter(start, end); +} + +template +inline typename PointDataLeafNode::IndexVoxelIter +PointDataLeafNode::beginIndexVoxel(const Coord& ijk) const +{ + ValueVoxelCIter iter = this->beginValueVoxel(ijk); + return IndexVoxelIter(iter, NullFilter()); +} + +template +template +inline IndexIter +PointDataLeafNode::beginIndexVoxel(const Coord& ijk, const FilterT& filter) const +{ + ValueVoxelCIter iter = this->beginValueVoxel(ijk); + FilterT newFilter(filter); + newFilter.reset(*this); + return IndexIter(iter, newFilter); +} + +template +inline Index64 +PointDataLeafNode::pointCount() const +{ + return this->getLastValue(); +} + +template +inline Index64 +PointDataLeafNode::onPointCount() const +{ + if (this->isEmpty()) return 0; + else if (this->isDense()) return this->pointCount(); + return iterCount(this->beginIndexOn()); +} + +template +inline Index64 +PointDataLeafNode::offPointCount() const +{ + if (this->isEmpty()) return this->pointCount(); + else if (this->isDense()) return 0; + return iterCount(this->beginIndexOff()); +} + +template +inline Index64 +PointDataLeafNode::groupPointCount(const Name& groupName) const +{ + if (!this->attributeSet().descriptor().hasGroup(groupName)) { + return Index64(0); + } + GroupFilter filter(groupName, this->attributeSet()); + if (filter.state() == index::ALL) { + return this->pointCount(); + } else { + return iterCount(this->beginIndexAll(filter)); + } +} + +template +inline void +PointDataLeafNode::updateValueMask() +{ + ValueType start = 0, end = 0; + for (Index n = 0; n < LeafNodeType::NUM_VALUES; n++) { + end = this->getValue(n); + this->setValueMask(n, (end - start) > 0); + start = end; + } +} + +template +inline void +PointDataLeafNode::setOffsetOn(Index offset, const ValueType& val) +{ + this->buffer().setValue(offset, val); + this->setValueMaskOn(offset); +} + +template +inline void +PointDataLeafNode::setOffsetOnly(Index offset, const ValueType& val) +{ + this->buffer().setValue(offset, val); +} + +template +inline void +PointDataLeafNode::readTopology(std::istream& is, bool fromHalf) +{ + BaseLeaf::readTopology(is, fromHalf); +} + +template +inline void +PointDataLeafNode::writeTopology(std::ostream& os, bool toHalf) const +{ + BaseLeaf::writeTopology(os, toHalf); +} + +template +inline Index +PointDataLeafNode::buffers() const +{ + return Index( /*voxel buffer sizes*/ 1 + + /*voxel buffers*/ 1 + + /*attribute metadata*/ 1 + + /*attribute uniform values*/ mAttributeSet->size() + + /*attribute buffers*/ mAttributeSet->size() + + /*cleanup*/ 1); +} + +template +inline void +PointDataLeafNode::readBuffers(std::istream& is, bool fromHalf) +{ + this->readBuffers(is, CoordBBox::inf(), fromHalf); +} + +template +inline void +PointDataLeafNode::readBuffers(std::istream& is, const CoordBBox& /*bbox*/, bool fromHalf) +{ + struct Local + { + static void destroyPagedStream(const io::StreamMetadata::AuxDataMap& auxData, const Index index) + { + // if paged stream exists, delete it + std::string key("paged:" + std::to_string(index)); + auto it = auxData.find(key); + if (it != auxData.end()) { + (const_cast(auxData)).erase(it); + } + } + + static compression::PagedInputStream& getOrInsertPagedStream( const io::StreamMetadata::AuxDataMap& auxData, + const Index index) + { + std::string key("paged:" + std::to_string(index)); + auto it = auxData.find(key); + if (it != auxData.end()) { + return *(boost::any_cast(it->second)); + } + else { + compression::PagedInputStream::Ptr pagedStream = std::make_shared(); + (const_cast(auxData))[key] = pagedStream; + return *pagedStream; + } + } + + static bool hasMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string matchingKey("hasMatchingDescriptor"); + auto itMatching = auxData.find(matchingKey); + return itMatching != auxData.end(); + } + + static void clearMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string matchingKey("hasMatchingDescriptor"); + std::string descriptorKey("descriptorPtr"); + auto itMatching = auxData.find(matchingKey); + auto itDescriptor = auxData.find(descriptorKey); + if (itMatching != auxData.end()) (const_cast(auxData)).erase(itMatching); + if (itDescriptor != auxData.end()) (const_cast(auxData)).erase(itDescriptor); + } + + static void insertDescriptor( const io::StreamMetadata::AuxDataMap& auxData, + const Descriptor::Ptr descriptor) + { + std::string descriptorKey("descriptorPtr"); + std::string matchingKey("hasMatchingDescriptor"); + auto itMatching = auxData.find(matchingKey); + if (itMatching == auxData.end()) { + // if matching bool is not found, insert "true" and the descriptor + (const_cast(auxData))[matchingKey] = true; + (const_cast(auxData))[descriptorKey] = descriptor; + } + } + + static AttributeSet::Descriptor::Ptr retrieveMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string descriptorKey("descriptorPtr"); + auto itDescriptor = auxData.find(descriptorKey); + assert(itDescriptor != auxData.end()); + const Descriptor::Ptr descriptor = boost::any_cast(itDescriptor->second); + return descriptor; + } + }; + + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(is); + + if (!meta) { + OPENVDB_THROW(IoError, "Cannot read in a PointDataLeaf without StreamMetadata."); + } + + const Index pass(static_cast(meta->pass())); + const Index maximumPass(static_cast(meta->pass() >> 16)); + + const Index attributes = (maximumPass - 4) / 2; + + if (pass == 0) { + // pass 0 - voxel data sizes + is.read(reinterpret_cast(&mVoxelBufferSize), sizeof(uint16_t)); + Local::clearMatchingDescriptor(meta->auxData()); + } + else if (pass == 1) { + // pass 1 - descriptor and attribute metadata + if (Local::hasMatchingDescriptor(meta->auxData())) { + AttributeSet::Descriptor::Ptr descriptor = Local::retrieveMatchingDescriptor(meta->auxData()); + mAttributeSet->resetDescriptor(descriptor, /*allowMismatchingDescriptors=*/true); + } + else { + uint8_t header; + is.read(reinterpret_cast(&header), sizeof(uint8_t)); + mAttributeSet->readDescriptor(is); + if (header & uint8_t(1)) { + AttributeSet::DescriptorPtr descriptor = mAttributeSet->descriptorPtr(); + Local::insertDescriptor(meta->auxData(), descriptor); + } + // a forwards-compatibility mechanism for future use, + // if a 0x2 bit is set, read and skip over a specific number of bytes + if (header & uint8_t(2)) { + uint64_t bytesToSkip; + is.read(reinterpret_cast(&bytesToSkip), sizeof(uint64_t)); + if (bytesToSkip > uint64_t(0)) { + auto metadata = io::getStreamMetadataPtr(is); + if (metadata && metadata->seekable()) { + is.seekg(bytesToSkip, std::ios_base::cur); + } + else { + std::vector tempData(bytesToSkip); + is.read(reinterpret_cast(&tempData[0]), bytesToSkip); + } + } + } + // this reader is only able to read headers with 0x1 and 0x2 bits set + if (header > uint8_t(3)) { + OPENVDB_THROW(IoError, "Unrecognised header flags in PointDataLeafNode"); + } + } + mAttributeSet->readMetadata(is); + } + else if (pass < (attributes + 2)) { + // pass 2...n+2 - attribute uniform values + const size_t attributeIndex = pass - 2; + AttributeArray* array = attributeIndex < mAttributeSet->size() ? + mAttributeSet->get(attributeIndex) : nullptr; + if (array) { + compression::PagedInputStream& pagedStream = + Local::getOrInsertPagedStream(meta->auxData(), static_cast(attributeIndex)); + pagedStream.setInputStream(is); + pagedStream.setSizeOnly(true); + array->readPagedBuffers(pagedStream); + } + } + else if (pass == attributes + 2) { + // pass n+2 - voxel data + + const Index passValue(meta->pass()); + + // StreamMetadata pass variable used to temporarily store voxel buffer size + io::StreamMetadata& nonConstMeta = const_cast(*meta); + nonConstMeta.setPass(mVoxelBufferSize); + + // readBuffers() calls readCompressedValues specialization above + BaseLeaf::readBuffers(is, fromHalf); + + // pass now reset to original value + nonConstMeta.setPass(passValue); + } + else if (pass < (attributes*2 + 3)) { + // pass n+2..2n+2 - attribute buffers + const Index attributeIndex = pass - attributes - 3; + AttributeArray* array = attributeIndex < mAttributeSet->size() ? + mAttributeSet->get(attributeIndex) : nullptr; + if (array) { + compression::PagedInputStream& pagedStream = + Local::getOrInsertPagedStream(meta->auxData(), attributeIndex); + pagedStream.setInputStream(is); + pagedStream.setSizeOnly(false); + array->readPagedBuffers(pagedStream); + } + // cleanup paged stream reference in auxiliary metadata + if (pass > attributes + 3) { + Local::destroyPagedStream(meta->auxData(), attributeIndex-1); + } + } + else if (pass < buffers()) { + // pass 2n+3 - cleanup last paged stream + const Index attributeIndex = pass - attributes - 4; + Local::destroyPagedStream(meta->auxData(), attributeIndex); + } +} + +template +inline void +PointDataLeafNode::writeBuffers(std::ostream& os, bool toHalf) const +{ + struct Local + { + static void destroyPagedStream(const io::StreamMetadata::AuxDataMap& auxData, const Index index) + { + // if paged stream exists, flush and delete it + std::string key("paged:" + std::to_string(index)); + auto it = auxData.find(key); + if (it != auxData.end()) { + compression::PagedOutputStream& stream = *(boost::any_cast(it->second)); + stream.flush(); + (const_cast(auxData)).erase(it); + } + } + + static compression::PagedOutputStream& getOrInsertPagedStream( const io::StreamMetadata::AuxDataMap& auxData, + const Index index) + { + std::string key("paged:" + std::to_string(index)); + auto it = auxData.find(key); + if (it != auxData.end()) { + return *(boost::any_cast(it->second)); + } + else { + compression::PagedOutputStream::Ptr pagedStream = std::make_shared(); + (const_cast(auxData))[key] = pagedStream; + return *pagedStream; + } + } + + static void insertDescriptor( const io::StreamMetadata::AuxDataMap& auxData, + const Descriptor::Ptr descriptor) + { + std::string descriptorKey("descriptorPtr"); + std::string matchingKey("hasMatchingDescriptor"); + auto itMatching = auxData.find(matchingKey); + auto itDescriptor = auxData.find(descriptorKey); + if (itMatching == auxData.end()) { + // if matching bool is not found, insert "true" and the descriptor + (const_cast(auxData))[matchingKey] = true; + assert(itDescriptor == auxData.end()); + (const_cast(auxData))[descriptorKey] = descriptor; + } + else { + // if matching bool is found and is false, early exit (a previous descriptor did not match) + bool matching = boost::any_cast(itMatching->second); + if (!matching) return; + assert(itDescriptor != auxData.end()); + // if matching bool is true, check whether the existing descriptor matches the current one and set + // matching bool to false if not + const Descriptor::Ptr existingDescriptor = boost::any_cast(itDescriptor->second); + if (*existingDescriptor != *descriptor) { + (const_cast(auxData))[matchingKey] = false; + } + } + } + + static bool hasMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string matchingKey("hasMatchingDescriptor"); + auto itMatching = auxData.find(matchingKey); + // if matching key is not found, no matching descriptor + if (itMatching == auxData.end()) return false; + // if matching key is found and is false, no matching descriptor + if (!boost::any_cast(itMatching->second)) return false; + return true; + } + + static AttributeSet::Descriptor::Ptr retrieveMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string descriptorKey("descriptorPtr"); + auto itDescriptor = auxData.find(descriptorKey); + // if matching key is true, however descriptor is not found, it has already been retrieved + if (itDescriptor == auxData.end()) return nullptr; + // otherwise remove it and return it + const Descriptor::Ptr descriptor = boost::any_cast(itDescriptor->second); + (const_cast(auxData)).erase(itDescriptor); + return descriptor; + } + + static void clearMatchingDescriptor(const io::StreamMetadata::AuxDataMap& auxData) + { + std::string matchingKey("hasMatchingDescriptor"); + std::string descriptorKey("descriptorPtr"); + auto itMatching = auxData.find(matchingKey); + auto itDescriptor = auxData.find(descriptorKey); + if (itMatching != auxData.end()) (const_cast(auxData)).erase(itMatching); + if (itDescriptor != auxData.end()) (const_cast(auxData)).erase(itDescriptor); + } + }; + + const io::StreamMetadata::Ptr meta = io::getStreamMetadataPtr(os); + + if (!meta) { + OPENVDB_THROW(IoError, "Cannot write out a PointDataLeaf without StreamMetadata."); + } + + const Index pass(static_cast(meta->pass())); + + // leaf traversal analysis deduces the number of passes to perform for this leaf + // then updates the leaf traversal value to ensure all passes will be written + + if (meta->countingPasses()) { + const Index requiredPasses = this->buffers(); + if (requiredPasses > pass) { + meta->setPass(requiredPasses); + } + return; + } + + const Index maximumPass(static_cast(meta->pass() >> 16)); + const Index attributes = (maximumPass - 4) / 2; + + if (pass == 0) { + // pass 0 - voxel data sizes + io::writeCompressedValuesSize(os, this->buffer().data(), SIZE); + // track if descriptor is shared or not + Local::insertDescriptor(meta->auxData(), mAttributeSet->descriptorPtr()); + } + else if (pass == 1) { + // pass 1 - descriptor and attribute metadata + bool matchingDescriptor = Local::hasMatchingDescriptor(meta->auxData()); + if (matchingDescriptor) { + AttributeSet::Descriptor::Ptr descriptor = Local::retrieveMatchingDescriptor(meta->auxData()); + if (descriptor) { + // write a header to indicate a shared descriptor + uint8_t header(1); + os.write(reinterpret_cast(&header), sizeof(uint8_t)); + mAttributeSet->writeDescriptor(os, /*transient=*/false); + } + } + else { + // write a header to indicate a non-shared descriptor + uint8_t header(0); + os.write(reinterpret_cast(&header), sizeof(uint8_t)); + mAttributeSet->writeDescriptor(os, /*transient=*/false); + } + mAttributeSet->writeMetadata(os, /*transient=*/false, /*paged=*/true); + } + else if (pass < attributes + 2) { + // pass 2...n+2 - attribute buffer sizes + const Index attributeIndex = pass - 2; + // destroy previous paged stream + if (pass > 2) { + Local::destroyPagedStream(meta->auxData(), attributeIndex-1); + } + const AttributeArray* array = attributeIndex < mAttributeSet->size() ? + mAttributeSet->getConst(attributeIndex) : nullptr; + if (array) { + compression::PagedOutputStream& pagedStream = + Local::getOrInsertPagedStream(meta->auxData(), attributeIndex); + pagedStream.setOutputStream(os); + pagedStream.setSizeOnly(true); + array->writePagedBuffers(pagedStream, /*outputTransient*/false); + } + } + else if (pass == attributes + 2) { + const Index attributeIndex = pass - 3; + Local::destroyPagedStream(meta->auxData(), attributeIndex); + // pass n+2 - voxel data + BaseLeaf::writeBuffers(os, toHalf); + } + else if (pass < (attributes*2 + 3)) { + // pass n+3...2n+3 - attribute buffers + const Index attributeIndex = pass - attributes - 3; + // destroy previous paged stream + if (pass > attributes + 2) { + Local::destroyPagedStream(meta->auxData(), attributeIndex-1); + } + const AttributeArray* array = attributeIndex < mAttributeSet->size() ? + mAttributeSet->getConst(attributeIndex) : nullptr; + if (array) { + compression::PagedOutputStream& pagedStream = + Local::getOrInsertPagedStream(meta->auxData(), attributeIndex); + pagedStream.setOutputStream(os); + pagedStream.setSizeOnly(false); + array->writePagedBuffers(pagedStream, /*outputTransient*/false); + } + } + else if (pass < buffers()) { + Local::clearMatchingDescriptor(meta->auxData()); + // pass 2n+3 - cleanup last paged stream + const Index attributeIndex = pass - attributes - 4; + Local::destroyPagedStream(meta->auxData(), attributeIndex); + } +} + +template +inline Index64 +PointDataLeafNode::memUsage() const +{ + return BaseLeaf::memUsage() + mAttributeSet->memUsage(); +} + +template +inline void +PointDataLeafNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + BaseLeaf::evalActiveBoundingBox(bbox, visitVoxels); +} + +template +inline CoordBBox +PointDataLeafNode::getNodeBoundingBox() const +{ + return BaseLeaf::getNodeBoundingBox(); +} + +template +inline void +PointDataLeafNode::fill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + if (!this->allocate()) return; + + this->assertNonModifiableUnlessZero(value); + + // active state is permitted to be updated + + for (Int32 x = bbox.min().x(); x <= bbox.max().x(); ++x) { + const Index offsetX = (x & (DIM-1u)) << 2*Log2Dim; + for (Int32 y = bbox.min().y(); y <= bbox.max().y(); ++y) { + const Index offsetXY = offsetX + ((y & (DIM-1u)) << Log2Dim); + for (Int32 z = bbox.min().z(); z <= bbox.max().z(); ++z) { + const Index offset = offsetXY + (z & (DIM-1u)); + this->setValueMask(offset, active); + } + } + } +} + +template +inline void +PointDataLeafNode::fill(const ValueType& value, bool active) +{ + this->assertNonModifiableUnlessZero(value); + + // active state is permitted to be updated + + if (active) this->setValuesOn(); + else this->setValuesOff(); +} + + +//////////////////////////////////////// + + +template +inline AttributeSet::Descriptor::Ptr +makeDescriptorUnique(PointDataTreeT& tree) +{ + auto leafIter = tree.beginLeaf(); + if (!leafIter) return nullptr; + + const AttributeSet::Descriptor& descriptor = leafIter->attributeSet().descriptor(); + auto newDescriptor = std::make_shared(descriptor); + for (; leafIter; ++leafIter) { + leafIter->resetDescriptor(newDescriptor); + } + + return newDescriptor; +} + + +template +inline void +setStreamingMode(PointDataTreeT& tree, bool on) +{ + auto leafIter = tree.beginLeaf(); + for (; leafIter; ++leafIter) { + for (size_t i = 0; i < leafIter->attributeSet().size(); i++) { + leafIter->attributeArray(i).setStreaming(on); + } + } +} + + +template +inline void +prefetch(PointDataTreeT& tree, bool position, bool otherAttributes) +{ + // NOTE: the following is intentionally not multi-threaded, as the I/O + // is faster if done in the order in which it is stored in the file + + auto leaf = tree.cbeginLeaf(); + if (!leaf) return; + + const auto& attributeSet = leaf->attributeSet(); + + // pre-fetch leaf data + + for ( ; leaf; ++leaf) { + leaf->buffer().data(); + } + + // pre-fetch position attribute data (position will typically have index 0) + + size_t positionIndex = attributeSet.find("P"); + + if (position && positionIndex != AttributeSet::INVALID_POS) { + for (leaf = tree.cbeginLeaf(); leaf; ++leaf) { + assert(leaf->hasAttribute(positionIndex)); + leaf->constAttributeArray(positionIndex).loadData(); + } + } + + // pre-fetch other attribute data + + if (otherAttributes) { + const size_t attributes = attributeSet.size(); + for (size_t attributeIndex = 0; attributeIndex < attributes; attributeIndex++) { + if (attributeIndex == positionIndex) continue; + for (leaf = tree.cbeginLeaf(); leaf; ++leaf) { + assert(leaf->hasAttribute(attributeIndex)); + leaf->constAttributeArray(attributeIndex).loadData(); + } + } + } +} + + +namespace internal { + +/// @brief Global registration of point data-related types +/// @note This is called from @c openvdb::initialize, so there is +/// no need to call it directly. +void initialize(); + +/// @brief Global deregistration of point data-related types +/// @note This is called from @c openvdb::uninitialize, so there is +/// no need to call it directly. +void uninitialize(); + + +/// @brief Recursive node chain which generates a boost::mpl::vector listing +/// value converted types of nodes to PointDataGrid nodes of the same configuration, +/// rooted at RootNodeType in reverse order, from LeafNode to RootNode. +/// See also TreeConverter<>. +template +struct PointDataNodeChain +{ + using SubtreeT = typename PointDataNodeChain::Type; + using RootNodeT = tree::RootNode::type>; + using Type = typename boost::mpl::push_back::type; +}; + +// Specialization for internal nodes which require their embedded child type to +// be switched +template +struct PointDataNodeChain, HeadLevel> +{ + using SubtreeT = typename PointDataNodeChain::Type; + using InternalNodeT = tree::InternalNode::type, Log2Dim>; + using Type = typename boost::mpl::push_back::type; +}; + +// Specialization for the last internal node of a node chain, expected +// to be templated on a leaf node +template +struct PointDataNodeChain, /*HeadLevel=*/1> +{ + using LeafNodeT = PointDataLeafNode; + using InternalNodeT = tree::InternalNode; + using Type = typename boost::mpl::vector::type; +}; + +} // namespace internal + + +/// @brief Similiar to ValueConverter, but allows for tree configuration conversion +/// to a PointDataTree. ValueConverter cannot be used as a +/// PointDataLeafNode is not a specialization of LeafNode +template +struct TreeConverter { + using RootNodeT = typename TreeType::RootNodeType; + using NodeChainT = typename internal::PointDataNodeChain::Type; + using Type = tree::Tree::type>; +}; + + +} // namespace points + + +//////////////////////////////////////// + + +namespace tree +{ + +/// Helper metafunction used to implement LeafNode::SameConfiguration +/// (which, as an inner class, can't be independently specialized) +template +struct SameLeafConfig> { static const bool value = true; }; + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_DATA_GRID_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointDelete.h b/openvdb/points/PointDelete.h new file mode 100644 index 00000000..eb460f90 --- /dev/null +++ b/openvdb/points/PointDelete.h @@ -0,0 +1,278 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Nick Avramoussis, Francisco Gochez, Dan Bailey +/// +/// @file PointDelete.h +/// +/// @brief Methods for deleting points based on group membership + +#ifndef OPENVDB_POINTS_POINT_DELETE_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_DELETE_HAS_BEEN_INCLUDED + +#include "PointDataGrid.h" +#include "PointGroup.h" +#include "IndexIterator.h" +#include "IndexFilter.h" + +#include +#include + +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Delete points that are members of specific groups +/// +/// @details This method will delete points which are members of any of the supplied groups and +/// will optionally drop the groups from the tree. An invert flag can be used to +/// delete points that belong to none of the groups. +/// +/// @param pointTree the point tree +/// @param groups the groups from which to delete points +/// @param invert if enabled, points not belonging to any of the groups will be deleted +/// @param drop if enabled and invert is disabled, the groups will be dropped from the tree +/// +/// @note If the invert flag is true, none of the groups will be dropped after deleting points +/// regardless of the value of the drop parameter. + +template +inline void deleteFromGroups(PointDataTreeT& pointTree, + const std::vector& groups, + bool invert = false, + bool drop = true); + +/// @brief Delete points that are members of a group +/// +/// @details This method will delete points which are members of the supplied group and will +/// optionally drop the group from the tree. An invert flag can be used to +/// delete points that belong to none of the groups. +/// +/// @param pointTree the point tree with the group to delete +/// @param group the name of the group to delete +/// @param invert if enabled, points not belonging to any of the groups will be deleted +/// @param drop if enabled and invert is disabled, the group will be dropped from the tree +/// +/// @note If the invert flag is true, the group will not be dropped after deleting points +/// regardless of the value of the drop parameter. + +template +inline void deleteFromGroup(PointDataTreeT& pointTree, + const std::string& group, + bool invert = false, + bool drop = true); + + +//////////////////////////////////////// + + +namespace point_delete_internal { + + +struct VectorWrapper +{ + using T = std::vector>; + + VectorWrapper(const T& _data) : data(_data) { } + operator bool() const { return index < data.size(); } + VectorWrapper& operator++() { index++; return *this; } + Index sourceIndex() const { assert(*this); return data[index].first; } + Index targetIndex() const { assert(*this); return data[index].second; } + +private: + const T& data; + T::size_type index = 0; +}; // struct VectorWrapper + + +template +struct DeleteByFilterOp +{ + using LeafManagerT = tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + using LeafNodeT = typename PointDataTreeT::LeafNodeType; + using ValueType = typename LeafNodeT::ValueType; + + DeleteByFilterOp(const FilterT& filter, + const AttributeArray::ScopedRegistryLock* lock) + : mFilter(filter) + , mLock(lock) { } + + void operator()(const LeafRangeT& range) const + { + for (auto leaf = range.begin(); leaf != range.end(); ++leaf) { + + const size_t newSize = + iterCount(leaf->template beginIndexAll(mFilter)); + + // if all points are being deleted, clear the leaf attributes + if (newSize == 0) { + leaf->clearAttributes(/*updateValueMask=*/true, mLock); + continue; + } + + // early exit if no points are being deleted + + const size_t currentSize = leaf->getLastValue(); + if (newSize == currentSize) continue; + + const AttributeSet& existingAttributeSet = leaf->attributeSet(); + AttributeSet* newAttributeSet = new AttributeSet( + existingAttributeSet, static_cast(newSize), mLock); + const size_t attributeSetSize = existingAttributeSet.size(); + + // cache the attribute arrays for efficiency + + std::vector newAttributeArrays; + std::vector existingAttributeArrays; + + for (size_t i = 0; i < attributeSetSize; i++) { + AttributeArray* newArray = newAttributeSet->get(i); + const AttributeArray* existingArray = existingAttributeSet.getConst(i); + + if (!newArray->hasConstantStride() || !existingArray->hasConstantStride()) { + OPENVDB_THROW(openvdb::NotImplementedError, + "Transfer of attribute values for dynamic arrays not currently supported."); + } + + if (newArray->stride() != existingArray->stride()) { + OPENVDB_THROW(openvdb::LookupError, + "Cannot transfer attribute values with mis-matching strides."); + } + + newAttributeArrays.push_back(newArray); + existingAttributeArrays.push_back(existingArray); + } + + Index attributeIndex = 0; + std::vector endOffsets; + + endOffsets.reserve(LeafNodeT::NUM_VALUES); + + // now construct new attribute arrays which exclude data from deleted points + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + std::vector> indexMapping; + indexMapping.reserve(newSize); + + for (auto voxel = leaf->cbeginValueAll(); voxel; ++voxel) { + for (auto iter = leaf->beginIndexVoxel(voxel.getCoord(), mFilter); + iter; ++iter) { + indexMapping.emplace_back(*iter, attributeIndex++); + } + endOffsets.push_back(static_cast(attributeIndex)); + } + + for (size_t i = 0; i < attributeSetSize; i++) { + VectorWrapper indexMappingWrapper(indexMapping); + newAttributeArrays[i]->copyValues(*(existingAttributeArrays[i]), indexMappingWrapper); + } +#else + for (auto voxel = leaf->cbeginValueAll(); voxel; ++voxel) { + for (auto iter = leaf->beginIndexVoxel(voxel.getCoord(), mFilter); + iter; ++iter) { + for (size_t i = 0; i < attributeSetSize; i++) { + newAttributeArrays[i]->set(attributeIndex, *(existingAttributeArrays[i]), + *iter); + } + ++attributeIndex; + } + endOffsets.push_back(static_cast(attributeIndex)); + } +#endif + + leaf->replaceAttributeSet(newAttributeSet); + leaf->setOffsets(endOffsets); + } + } + +private: + const FilterT& mFilter; + const AttributeArray::ScopedRegistryLock* mLock; +}; // struct DeleteByFilterOp + +} // namespace point_delete_internal + + +//////////////////////////////////////// + + +template +inline void deleteFromGroups(PointDataTreeT& pointTree, + const std::vector& groups, + bool invert, + bool drop) +{ + const typename PointDataTreeT::LeafCIter leafIter = pointTree.cbeginLeaf(); + + if (!leafIter) return; + + const openvdb::points::AttributeSet& attributeSet = leafIter->attributeSet(); + const AttributeSet::Descriptor& descriptor = attributeSet.descriptor(); + std::vector availableGroups; + + // determine which of the requested groups exist, and early exit + // if none are present in the tree + + for (const auto& groupName : groups) { + if (descriptor.hasGroup(groupName)) { + availableGroups.push_back(groupName); + } + } + + if (availableGroups.empty()) return; + + std::vector empty; + std::unique_ptr filter; + if (invert) { + filter.reset(new MultiGroupFilter(groups, empty, leafIter->attributeSet())); + } + else { + filter.reset(new MultiGroupFilter(empty, groups, leafIter->attributeSet())); + } + + { // acquire registry lock to avoid locking when appending attributes in parallel + + AttributeArray::ScopedRegistryLock lock; + + tree::LeafManager leafManager(pointTree); + point_delete_internal::DeleteByFilterOp deleteOp( + *filter, &lock); + tbb::parallel_for(leafManager.leafRange(), deleteOp); + } + + // remove empty leaf nodes + + tools::pruneInactive(pointTree); + + // drop the now-empty groups if requested (unless invert = true) + + if (drop && !invert) { + dropGroups(pointTree, availableGroups); + } +} + +template +inline void deleteFromGroup(PointDataTreeT& pointTree, + const std::string& group, + bool invert, + bool drop) +{ + std::vector groups(1, group); + + deleteFromGroups(pointTree, groups, invert, drop); +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_DELETE_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointGroup.h b/openvdb/points/PointGroup.h new file mode 100644 index 00000000..96708c86 --- /dev/null +++ b/openvdb/points/PointGroup.h @@ -0,0 +1,845 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey +/// +/// @file points/PointGroup.h +/// +/// @brief Point group manipulation in a VDB Point Grid. + +#ifndef OPENVDB_POINTS_POINT_GROUP_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_GROUP_HAS_BEEN_INCLUDED + +#include + +#include "IndexIterator.h" // FilterTraits +#include "IndexFilter.h" // FilterTraits +#include "AttributeSet.h" +#include "PointDataGrid.h" +#include "PointAttribute.h" +#include "PointCount.h" + +#include + +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +/// @brief Delete any group that is not present in the Descriptor. +/// +/// @param groups the vector of group names. +/// @param descriptor the descriptor that holds the group map. +inline void deleteMissingPointGroups( std::vector& groups, + const AttributeSet::Descriptor& descriptor); + +/// @brief Appends a new empty group to the VDB tree. +/// +/// @param tree the PointDataTree to be appended to. +/// @param group name of the new group. +template +inline void appendGroup(PointDataTree& tree, + const Name& group); + +/// @brief Appends new empty groups to the VDB tree. +/// +/// @param tree the PointDataTree to be appended to. +/// @param groups names of the new groups. +template +inline void appendGroups(PointDataTree& tree, + const std::vector& groups); + +/// @brief Drops an existing group from the VDB tree. +/// +/// @param tree the PointDataTree to be dropped from. +/// @param group name of the group. +/// @param compact compact attributes if possible to reduce memory - if dropping +/// more than one group, compacting once at the end will be faster +template +inline void dropGroup( PointDataTree& tree, + const Name& group, + const bool compact = true); + +/// @brief Drops existing groups from the VDB tree, the tree is compacted after dropping. +/// +/// @param tree the PointDataTree to be dropped from. +/// @param groups names of the groups. +template +inline void dropGroups( PointDataTree& tree, + const std::vector& groups); + +/// @brief Drops all existing groups from the VDB tree, the tree is compacted after dropping. +/// +/// @param tree the PointDataTree to be dropped from. +template +inline void dropGroups( PointDataTree& tree); + +/// @brief Compacts existing groups of a VDB Tree to use less memory if possible. +/// +/// @param tree the PointDataTree to be compacted. +template +inline void compactGroups(PointDataTree& tree); + +/// @brief Sets group membership from a PointIndexTree-ordered vector. +/// +/// @param tree the PointDataTree. +/// @param indexTree the PointIndexTree. +/// @param membership @c 1 if the point is in the group, 0 otherwise. +/// @param group the name of the group. +/// @param remove if @c true also perform removal of points from the group. +/// +/// @note vector is not thread-safe on concurrent write, so use vector instead +template +inline void setGroup( PointDataTree& tree, + const PointIndexTree& indexTree, + const std::vector& membership, + const Name& group, + const bool remove = false); + +/// @brief Sets membership for the specified group for all points (on/off). +/// +/// @param tree the PointDataTree. +/// @param group the name of the group. +/// @param member true / false for membership of the group. +template +inline void setGroup( PointDataTree& tree, + const Name& group, + const bool member = true); + +/// @brief Sets group membership based on a provided filter. +/// +/// @param tree the PointDataTree. +/// @param group the name of the group. +/// @param filter filter data that is used to create a per-leaf filter +template +inline void setGroupByFilter( PointDataTree& tree, + const Name& group, + const FilterT& filter); + + +//////////////////////////////////////// + + +namespace point_group_internal { + + +/// Copy a group attribute value from one group offset to another +template +struct CopyGroupOp { + + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + + CopyGroupOp(const GroupIndex& targetIndex, + const GroupIndex& sourceIndex) + : mTargetIndex(targetIndex) + , mSourceIndex(sourceIndex) { } + + void operator()(const typename LeafManagerT::LeafRange& range) const { + + for (auto leaf = range.begin(); leaf; ++leaf) { + + GroupHandle sourceGroup = leaf->groupHandle(mSourceIndex); + GroupWriteHandle targetGroup = leaf->groupWriteHandle(mTargetIndex); + + for (auto iter = leaf->beginIndexAll(); iter; ++iter) { + const bool groupOn = sourceGroup.get(*iter); + targetGroup.set(*iter, groupOn); + } + } + } + + ////////// + + const GroupIndex mTargetIndex; + const GroupIndex mSourceIndex; +}; + + +/// Set membership on or off for the specified group +template +struct SetGroupOp +{ + using LeafManagerT = typename tree::LeafManager; + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + + SetGroupOp(const AttributeSet::Descriptor::GroupIndex& index) + : mIndex(index) { } + + void operator()(const typename LeafManagerT::LeafRange& range) const + { + for (auto leaf = range.begin(); leaf; ++leaf) { + + // obtain the group attribute array + + GroupWriteHandle group(leaf->groupWriteHandle(mIndex)); + + // set the group value + + group.collapse(Member); + } + } + + ////////// + + const GroupIndex& mIndex; +}; // struct SetGroupOp + + +template +struct SetGroupFromIndexOp +{ + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + using PointIndexLeafNode = typename PointIndexTree::LeafNodeType; + using IndexArray = typename PointIndexLeafNode::IndexArray; + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + using MembershipArray = std::vector; + + SetGroupFromIndexOp(const PointIndexTree& indexTree, + const MembershipArray& membership, + const GroupIndex& index) + : mIndexTree(indexTree) + , mMembership(membership) + , mIndex(index) { } + + void operator()(const typename LeafManagerT::LeafRange& range) const + { + for (auto leaf = range.begin(); leaf; ++leaf) { + + // obtain the PointIndexLeafNode (using the origin of the current leaf) + + const PointIndexLeafNode* pointIndexLeaf = mIndexTree.probeConstLeaf(leaf->origin()); + + if (!pointIndexLeaf) continue; + + // obtain the group attribute array + + GroupWriteHandle group(leaf->groupWriteHandle(mIndex)); + + // initialise the attribute storage + + Index64 index = 0; + + const IndexArray& indices = pointIndexLeaf->indices(); + + for (const Index64 i: indices) { + if (Remove) { + group.set(static_cast(index), mMembership[i]); + } else if (mMembership[i] == short(1)) { + group.set(static_cast(index), short(1)); + } + index++; + } + + // attempt to compact the array + + group.compact(); + } + } + + ////////// + + const PointIndexTree& mIndexTree; + const MembershipArray& mMembership; + const GroupIndex& mIndex; +}; // struct SetGroupFromIndexOp + + +template +struct SetGroupByFilterOp +{ + using LeafManagerT = typename tree::LeafManager; + using LeafRangeT = typename LeafManagerT::LeafRange; + using LeafNodeT = typename PointDataTree::LeafNodeType; + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + + SetGroupByFilterOp( const GroupIndex& index, const FilterT& filter) + : mIndex(index) + , mFilter(filter) { } + + void operator()(const typename LeafManagerT::LeafRange& range) const + { + for (auto leaf = range.begin(); leaf; ++leaf) { + + // obtain the group attribute array + + GroupWriteHandle group(leaf->groupWriteHandle(mIndex)); + + auto iter = leaf->template beginIndex(mFilter); + + for (; iter; ++iter) { + group.set(*iter, true); + } + + // attempt to compact the array + + group.compact(); + } + } + + ////////// + + const GroupIndex& mIndex; + const FilterT& mFilter; // beginIndex takes a copy of mFilter +}; // struct SetGroupByFilterOp + + +//////////////////////////////////////// + + +/// Convenience class with methods for analyzing group data +class GroupInfo +{ +public: + using Descriptor = AttributeSet::Descriptor; + + GroupInfo(const AttributeSet& attributeSet) + : mAttributeSet(attributeSet) { } + + /// Return the number of bits in a group (typically 8) + static size_t groupBits() { return sizeof(GroupType) * CHAR_BIT; } + + /// Return the number of empty group slots which correlates to the number of groups + /// that can be stored without increasing the number of group attribute arrays + size_t unusedGroups() const + { + const Descriptor& descriptor = mAttributeSet.descriptor(); + + // compute total slots (one slot per bit of the group attributes) + + const size_t groupAttributes = descriptor.count(GroupAttributeArray::attributeType()); + + if (groupAttributes == 0) return 0; + + const size_t totalSlots = groupAttributes * this->groupBits(); + + // compute slots in use + + const AttributeSet::Descriptor::NameToPosMap& groupMap = mAttributeSet.descriptor().groupMap(); + const size_t usedSlots = groupMap.size(); + + return totalSlots - usedSlots; + } + + /// Return @c true if there are sufficient empty slots to allow compacting + bool canCompactGroups() const + { + // can compact if more unused groups than in one group attribute array + + return this->unusedGroups() >= this->groupBits(); + } + + /// Return the next empty group slot + size_t nextUnusedOffset() const + { + const Descriptor::NameToPosMap& groupMap = mAttributeSet.descriptor().groupMap(); + + // build a list of group indices + + std::vector indices; + indices.reserve(groupMap.size()); + for (const auto& namePos : groupMap) { + indices.push_back(namePos.second); + } + + std::sort(indices.begin(), indices.end()); + + // return first index not present + + size_t offset = 0; + for (const size_t& index : indices) { + if (index != offset) break; + offset++; + } + + return offset; + } + + /// Return vector of indices correlating to the group attribute arrays + std::vector populateGroupIndices() const + { + std::vector indices; + + const Descriptor::NameToPosMap& map = mAttributeSet.descriptor().map(); + + for (const auto& namePos : map) { + const AttributeArray* array = mAttributeSet.getConst(namePos.first); + if (isGroup(*array)) { + indices.push_back(namePos.second); + } + } + + return indices; + } + + /// Determine if a move is required to efficiently compact the data and store the + /// source name, offset and the target offset in the input parameters + bool requiresMove(Name& sourceName, size_t& sourceOffset, size_t& targetOffset) const { + + targetOffset = this->nextUnusedOffset(); + + const Descriptor::NameToPosMap& groupMap = mAttributeSet.descriptor().groupMap(); + + for (const auto& namePos : groupMap) { + + // move only required if source comes after the target + + if (namePos.second >= targetOffset) { + sourceName = namePos.first; + sourceOffset = namePos.second; + return true; + } + } + + return false; + } + +private: + const AttributeSet& mAttributeSet; +}; // class GroupInfo + + +} // namespace point_group_internal + + +//////////////////////////////////////// + + +inline void deleteMissingPointGroups( std::vector& groups, + const AttributeSet::Descriptor& descriptor) +{ + for (auto it = groups.begin(); it != groups.end();) { + if (!descriptor.hasGroup(*it)) it = groups.erase(it); + else ++it; + } +} + + +//////////////////////////////////////// + + +template +inline void appendGroup(PointDataTreeT& tree, const Name& group) +{ + using point_group_internal::GroupInfo; + + if (group.empty()) { + OPENVDB_THROW(KeyError, "Cannot use an empty group name as a key."); + } + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + auto descriptor = attributeSet.descriptorPtr(); + GroupInfo groupInfo(attributeSet); + + // don't add if group already exists + + if (descriptor->hasGroup(group)) return; + + const bool hasUnusedGroup = groupInfo.unusedGroups() > 0; + + // add a new group attribute if there are no unused groups + + if (!hasUnusedGroup) { + + // find a new internal group name + + const Name groupName = descriptor->uniqueName("__group"); + + descriptor = descriptor->duplicateAppend(groupName, GroupAttributeArray::attributeType()); + const size_t pos = descriptor->find(groupName); + + // insert new group attribute + + tree::LeafManager leafManager(tree); + leafManager.foreach( + [&](typename PointDataTreeT::LeafNodeType& leaf, size_t /*idx*/) { + auto expected = leaf.attributeSet().descriptorPtr(); + leaf.appendAttribute(*expected, descriptor, pos); + }, /*threaded=*/true + ); + } + else { + // make the descriptor unique before we modify the group map + + makeDescriptorUnique(tree); + descriptor = attributeSet.descriptorPtr(); + } + + // ensure that there are now available groups + + assert(groupInfo.unusedGroups() > 0); + + // find next unused offset + + const size_t offset = groupInfo.nextUnusedOffset(); + + // add the group mapping to the descriptor + + descriptor->setGroup(group, offset); + + // if there was an unused group then we did not need to append a new attribute, so + // we must manually clear membership in the new group as its bits may have been + // previously set + + if (hasUnusedGroup) setGroup(tree, group, false); +} + + +//////////////////////////////////////// + + +template +inline void appendGroups(PointDataTree& tree, + const std::vector& groups) +{ + // TODO: could be more efficient by appending multiple groups at once + // instead of one-by-one, however this is likely not that common a use case + + for (const Name& name : groups) { + appendGroup(tree, name); + } +} + + +//////////////////////////////////////// + + +template +inline void dropGroup(PointDataTree& tree, const Name& group, const bool compact) +{ + using Descriptor = AttributeSet::Descriptor; + + if (group.empty()) { + OPENVDB_THROW(KeyError, "Cannot use an empty group name as a key."); + } + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + + // make the descriptor unique before we modify the group map + + makeDescriptorUnique(tree); + Descriptor::Ptr descriptor = attributeSet.descriptorPtr(); + + // now drop the group + + descriptor->dropGroup(group); + + if (compact) { + compactGroups(tree); + } +} + + +//////////////////////////////////////// + + +template +inline void dropGroups( PointDataTree& tree, + const std::vector& groups) +{ + for (const Name& name : groups) { + dropGroup(tree, name, /*compact=*/false); + } + + // compaction done once for efficiency + + compactGroups(tree); +} + + +//////////////////////////////////////// + + +template +inline void dropGroups( PointDataTree& tree) +{ + using Descriptor = AttributeSet::Descriptor; + + using point_group_internal::GroupInfo; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + GroupInfo groupInfo(attributeSet); + + // make the descriptor unique before we modify the group map + + makeDescriptorUnique(tree); + Descriptor::Ptr descriptor = attributeSet.descriptorPtr(); + + descriptor->clearGroups(); + + // find all indices for group attribute arrays + + std::vector indices = groupInfo.populateGroupIndices(); + + // drop these attributes arrays + + dropAttributes(tree, indices); +} + + +//////////////////////////////////////// + + +template +inline void compactGroups(PointDataTree& tree) +{ + using Descriptor = AttributeSet::Descriptor; + using GroupIndex = Descriptor::GroupIndex; + using LeafManagerT = typename tree::template LeafManager; + + using point_group_internal::CopyGroupOp; + using point_group_internal::GroupInfo; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + GroupInfo groupInfo(attributeSet); + + // early exit if not possible to compact + + if (!groupInfo.canCompactGroups()) return; + + // make the descriptor unique before we modify the group map + + makeDescriptorUnique(tree); + Descriptor::Ptr descriptor = attributeSet.descriptorPtr(); + + // generate a list of group offsets and move them (one-by-one) + // TODO: improve this algorithm to move multiple groups per array at once + // though this is likely not that common a use case + + Name sourceName; + size_t sourceOffset, targetOffset; + + while (groupInfo.requiresMove(sourceName, sourceOffset, targetOffset)) { + + const GroupIndex sourceIndex = attributeSet.groupIndex(sourceOffset); + const GroupIndex targetIndex = attributeSet.groupIndex(targetOffset); + + CopyGroupOp copy(targetIndex, sourceIndex); + LeafManagerT leafManager(tree); + tbb::parallel_for(leafManager.leafRange(), copy); + + descriptor->setGroup(sourceName, targetOffset); + } + + // drop unused attribute arrays + + std::vector indices = groupInfo.populateGroupIndices(); + + const size_t totalAttributesToDrop = groupInfo.unusedGroups() / groupInfo.groupBits(); + + assert(totalAttributesToDrop <= indices.size()); + + std::vector indicesToDrop(indices.end() - totalAttributesToDrop, indices.end()); + + dropAttributes(tree, indicesToDrop); +} + + +//////////////////////////////////////// + + +template +inline void setGroup( PointDataTree& tree, + const PointIndexTree& indexTree, + const std::vector& membership, + const Name& group, + const bool remove) +{ + using Descriptor = AttributeSet::Descriptor; + using LeafManagerT = typename tree::template LeafManager; + using point_group_internal::SetGroupFromIndexOp; + + auto iter = tree.cbeginLeaf(); + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + const Descriptor& descriptor = attributeSet.descriptor(); + + if (!descriptor.hasGroup(group)) { + OPENVDB_THROW(LookupError, "Group must exist on Tree before defining membership."); + } + + { + // Check that that the largest index in the PointIndexTree is smaller than the size + // of the membership vector. The index tree will be used to lookup membership + // values. If the index tree was constructed with nan positions, this index will + // differ from the PointDataTree count + + using IndexTreeManager = tree::LeafManager; + IndexTreeManager leafManager(indexTree); + + const int64_t max = tbb::parallel_reduce(leafManager.leafRange(), -1, + [](const typename IndexTreeManager::LeafRange& range, int64_t value) -> int64_t { + for (auto leaf = range.begin(); leaf; ++leaf) { + auto it = std::max_element(leaf->indices().begin(), leaf->indices().end()); + value = std::max(value, static_cast(*it)); + } + return value; + }, + [](const int64_t a, const int64_t b) { + return std::max(a, b); + } + ); + + if (max != -1 && membership.size() <= static_cast(max)) { + OPENVDB_THROW(IndexError, "Group membership vector size must be larger than " + " the maximum index within the provided index tree."); + } + } + + const Descriptor::GroupIndex index = attributeSet.groupIndex(group); + LeafManagerT leafManager(tree); + + // set membership + + if (remove) { + SetGroupFromIndexOp + set(indexTree, membership, index); + tbb::parallel_for(leafManager.leafRange(), set); + } + else { + SetGroupFromIndexOp + set(indexTree, membership, index); + tbb::parallel_for(leafManager.leafRange(), set); + } +} + + +//////////////////////////////////////// + + +template +inline void setGroup( PointDataTree& tree, + const Name& group, + const bool member) +{ + using Descriptor = AttributeSet::Descriptor; + using LeafManagerT = typename tree::template LeafManager; + + using point_group_internal::SetGroupOp; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + const Descriptor& descriptor = attributeSet.descriptor(); + + if (!descriptor.hasGroup(group)) { + OPENVDB_THROW(LookupError, "Group must exist on Tree before defining membership."); + } + + const Descriptor::GroupIndex index = attributeSet.groupIndex(group); + LeafManagerT leafManager(tree); + + // set membership based on member variable + + if (member) tbb::parallel_for(leafManager.leafRange(), SetGroupOp(index)); + else tbb::parallel_for(leafManager.leafRange(), SetGroupOp(index)); +} + + +//////////////////////////////////////// + + +template +inline void setGroupByFilter( PointDataTree& tree, + const Name& group, + const FilterT& filter) +{ + using Descriptor = AttributeSet::Descriptor; + using LeafManagerT = typename tree::template LeafManager; + + using point_group_internal::SetGroupByFilterOp; + + auto iter = tree.cbeginLeaf(); + + if (!iter) return; + + const AttributeSet& attributeSet = iter->attributeSet(); + const Descriptor& descriptor = attributeSet.descriptor(); + + if (!descriptor.hasGroup(group)) { + OPENVDB_THROW(LookupError, "Group must exist on Tree before defining membership."); + } + + const Descriptor::GroupIndex index = attributeSet.groupIndex(group); + + // set membership using filter + + SetGroupByFilterOp set(index, filter); + LeafManagerT leafManager(tree); + + tbb::parallel_for(leafManager.leafRange(), set); +} + + +//////////////////////////////////////// + + +template +inline void setGroupByRandomTarget( PointDataTree& tree, + const Name& group, + const Index64 targetPoints, + const unsigned int seed = 0) +{ + using RandomFilter = RandomLeafFilter; + + RandomFilter filter(tree, targetPoints, seed); + + setGroupByFilter(tree, group, filter); +} + + +//////////////////////////////////////// + + +template +inline void setGroupByRandomPercentage( PointDataTree& tree, + const Name& group, + const float percentage = 10.0f, + const unsigned int seed = 0) +{ + using RandomFilter = RandomLeafFilter; + + const int currentPoints = static_cast(pointCount(tree)); + const int targetPoints = int(math::Round((percentage * float(currentPoints))/100.0f)); + + RandomFilter filter(tree, targetPoints, seed); + + setGroupByFilter(tree, group, filter); +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#endif // OPENVDB_POINTS_POINT_GROUP_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointMask.h b/openvdb/points/PointMask.h new file mode 100644 index 00000000..ea0f21e0 --- /dev/null +++ b/openvdb/points/PointMask.h @@ -0,0 +1,435 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/PointMask.h +/// +/// @author Dan Bailey +/// +/// @brief Methods for extracting masks from VDB Point grids. + +#ifndef OPENVDB_POINTS_POINT_MASK_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_MASK_HAS_BEEN_INCLUDED + +#include +#include // valxform::SumOp + +#include "PointDataGrid.h" +#include "IndexFilter.h" + +#include + +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Extract a Mask Grid from a Point Data Grid +/// @param grid the PointDataGrid to extract the mask from. +/// @param filter an optional index filter +/// @param threaded enable or disable threading (threading is enabled by default) +/// @note this method is only available for Bool Grids and Mask Grids +template ::Type, + typename FilterT = NullFilter> +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask(const PointDataGridT& grid, + const FilterT& filter = NullFilter(), + bool threaded = true); + + +/// @brief Extract a Mask Grid from a Point Data Grid using a new transform +/// @param grid the PointDataGrid to extract the mask from. +/// @param transform target transform for the mask. +/// @param filter an optional index filter +/// @param threaded enable or disable threading (threading is enabled by default) +/// @note this method is only available for Bool Grids and Mask Grids +template ::Type, + typename FilterT = NullFilter> +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask(const PointDataGridT& grid, + const openvdb::math::Transform& transform, + const FilterT& filter = NullFilter(), + bool threaded = true); + + +/// @brief No-op deformer (adheres to the deformer interface documented in PointMove.h) +struct NullDeformer +{ + template + void reset(LeafT&, size_t /*idx*/ = 0) { } + + template + void apply(Vec3d&, IterT&) const { } +}; + +/// @brief Deformer Traits for optionally configuring deformers to be applied +/// in index-space. The default is world-space. +template +struct DeformerTraits +{ + static const bool IndexSpace = false; +}; + + +//////////////////////////////////////// + + +namespace point_mask_internal { + +template +void voxelSum(LeafT& leaf, const Index offset, const typename LeafT::ValueType& value) +{ + leaf.modifyValue(offset, tools::valxform::SumOp(value)); +} + +// overload PointDataLeaf access to use setOffsetOn(), as modifyValue() +// is intentionally disabled to avoid accidental usage + +template +void voxelSum(PointDataLeafNode& leaf, const Index offset, + const typename PointDataLeafNode::ValueType& value) +{ + leaf.setOffsetOn(offset, leaf.getValue(offset) + value); +} + + +/// @brief Combines multiple grids into one by stealing leaf nodes and summing voxel values +/// This class is designed to work with thread local storage containers such as tbb::combinable +template +struct GridCombinerOp +{ + using CombinableT = typename tbb::combinable; + + using TreeT = typename GridT::TreeType; + using LeafT = typename TreeT::LeafNodeType; + using ValueType = typename TreeT::ValueType; + using SumOp = tools::valxform::SumOp; + + GridCombinerOp(GridT& grid) + : mTree(grid.tree()) {} + + void operator()(const GridT& grid) + { + for (auto leaf = grid.tree().beginLeaf(); leaf; ++leaf) { + auto* newLeaf = mTree.probeLeaf(leaf->origin()); + if (!newLeaf) { + // if the leaf doesn't yet exist in the new tree, steal it + auto& tree = const_cast(grid).tree(); + mTree.addLeaf(tree.template stealNode(leaf->origin(), + zeroVal(), false)); + } + else { + // otherwise increment existing values + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + voxelSum(*newLeaf, iter.offset(), ValueType(*iter)); + } + } + } + } + +private: + TreeT& mTree; +}; // struct GridCombinerOp + + +/// @brief Compute scalar grid from PointDataGrid while evaluating the point filter +template +struct PointsToScalarOp +{ + using LeafT = typename GridT::TreeType::LeafNodeType; + using ValueT = typename LeafT::ValueType; + + PointsToScalarOp( const PointDataGridT& grid, + const FilterT& filter) + : mPointDataAccessor(grid.getConstAccessor()) + , mFilter(filter) { } + + void operator()(LeafT& leaf, size_t /*idx*/) const { + + const auto* const pointLeaf = + mPointDataAccessor.probeConstLeaf(leaf.origin()); + + // assumes matching topology + assert(pointLeaf); + + for (auto value = leaf.beginValueOn(); value; ++value) { + const Index64 count = points::iterCount( + pointLeaf->beginIndexVoxel(value.getCoord(), mFilter)); + if (count > Index64(0)) { + value.setValue(ValueT(count)); + } else { + // disable any empty voxels + value.setValueOn(false); + } + } + } + +private: + const typename PointDataGridT::ConstAccessor mPointDataAccessor; + const FilterT& mFilter; +}; // struct PointsToScalarOp + + +/// @brief Compute scalar grid from PointDataGrid using a different transform +/// and while evaluating the point filter +template +struct PointsToTransformedScalarOp +{ + using PointDataLeafT = typename PointDataGridT::TreeType::LeafNodeType; + using ValueT = typename GridT::TreeType::ValueType; + using HandleT = AttributeHandle; + using CombinableT = typename GridCombinerOp::CombinableT; + + PointsToTransformedScalarOp(const math::Transform& targetTransform, + const math::Transform& sourceTransform, + const FilterT& filter, + const DeformerT& deformer, + CombinableT& combinable) + : mTargetTransform(targetTransform) + , mSourceTransform(sourceTransform) + , mFilter(filter) + , mDeformer(deformer) + , mCombinable(combinable) { } + + void operator()(const PointDataLeafT& leaf, size_t idx) const + { + DeformerT deformer(mDeformer); + + auto& grid = mCombinable.local(); + auto& countTree = grid.tree(); + tree::ValueAccessor accessor(countTree); + + deformer.reset(leaf, idx); + + auto handle = HandleT::create(leaf.constAttributeArray("P")); + + for (auto iter = leaf.beginIndexOn(mFilter); iter; iter++) { + + // extract index-space position + + Vec3d position = handle->get(*iter) + iter.getCoord().asVec3d(); + + // if deformer is designed to be used in index-space, perform deformation prior + // to transforming position to world-space, otherwise perform deformation afterwards + + if (DeformerTraits::IndexSpace) { + deformer.template apply(position, iter); + position = mSourceTransform.indexToWorld(position); + } + else { + position = mSourceTransform.indexToWorld(position); + deformer.template apply(position, iter); + } + + // determine coord of target grid + + const Coord ijk = mTargetTransform.worldToIndexCellCentered(position); + + // increment count in target voxel + + auto* newLeaf = accessor.touchLeaf(ijk); + assert(newLeaf); + voxelSum(*newLeaf, newLeaf->coordToOffset(ijk), ValueT(1)); + } + } + +private: + const openvdb::math::Transform& mTargetTransform; + const openvdb::math::Transform& mSourceTransform; + const FilterT& mFilter; + const DeformerT& mDeformer; + CombinableT& mCombinable; +}; // struct PointsToTransformedScalarOp + + +template +inline typename GridT::Ptr convertPointsToScalar( + const PointDataGridT& points, + const FilterT& filter, + bool threaded = true) +{ + using point_mask_internal::PointsToScalarOp; + + using GridTreeT = typename GridT::TreeType; + using ValueT = typename GridTreeT::ValueType; + + // copy the topology from the points grid + + typename GridTreeT::Ptr tree(new GridTreeT(points.constTree(), + false, openvdb::TopologyCopy())); + typename GridT::Ptr grid = GridT::create(tree); + grid->setTransform(points.transform().copy()); + + // early exit if no leaves + + if (points.constTree().leafCount() == 0) return grid; + + // early exit if mask and no group logic + + if (std::is_same::value && filter.state() == index::ALL) return grid; + + // evaluate point group filters to produce a subset of the generated mask + + tree::LeafManager leafManager(*tree); + + if (filter.state() == index::ALL) { + NullFilter nullFilter; + PointsToScalarOp pointsToScalarOp( + points, nullFilter); + leafManager.foreach(pointsToScalarOp, threaded); + } else { + // build mask from points in parallel only where filter evaluates to true + PointsToScalarOp pointsToScalarOp( + points, filter); + leafManager.foreach(pointsToScalarOp, threaded); + } + + return grid; +} + + +template +inline typename GridT::Ptr convertPointsToScalar( + PointDataGridT& points, + const openvdb::math::Transform& transform, + const FilterT& filter, + const DeformerT& deformer, + bool threaded = true) +{ + using point_mask_internal::PointsToTransformedScalarOp; + using point_mask_internal::GridCombinerOp; + + using CombinerOpT = GridCombinerOp; + using CombinableT = typename GridCombinerOp::CombinableT; + + // use the simpler method if the requested transform matches the existing one + + const openvdb::math::Transform& pointsTransform = points.constTransform(); + + if (transform == pointsTransform && std::is_same()) { + return convertPointsToScalar(points, filter, threaded); + } + + typename GridT::Ptr grid = GridT::create(); + grid->setTransform(transform.copy()); + + // early exit if no leaves + + if (points.constTree().leafCount() == 0) return grid; + + // compute mask grids in parallel using new transform + + CombinableT combiner; + + tree::LeafManager leafManager(points.tree()); + + if (filter.state() == index::ALL) { + NullFilter nullFilter; + PointsToTransformedScalarOp pointsToScalarOp( + transform, pointsTransform, nullFilter, deformer, combiner); + leafManager.foreach(pointsToScalarOp, threaded); + } else { + PointsToTransformedScalarOp pointsToScalarOp( + transform, pointsTransform, filter, deformer, combiner); + leafManager.foreach(pointsToScalarOp, threaded); + } + + // combine the mask grids into one + + CombinerOpT combineOp(*grid); + combiner.combine_each(combineOp); + + return grid; +} + + +} // namespace point_mask_internal + + +//////////////////////////////////////// + + +template +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask( + const PointDataGridT& points, + const FilterT& filter, + bool threaded) +{ + return point_mask_internal::convertPointsToScalar( + points, filter, threaded); +} + + +template +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask( + const PointDataGridT& points, + const openvdb::math::Transform& transform, + const FilterT& filter, + bool threaded) +{ + // This is safe because the PointDataGrid can only be modified by the deformer + using AdapterT = TreeAdapter; + auto& nonConstPoints = const_cast(points); + + NullDeformer deformer; + return point_mask_internal::convertPointsToScalar( + nonConstPoints, transform, filter, deformer, threaded); +} + + +//////////////////////////////////////// + + +// deprecated functions + + +template ::Type> +OPENVDB_DEPRECATED +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask(const PointDataGridT& grid, + const std::vector& includeGroups, + const std::vector& excludeGroups) +{ + auto leaf = grid.tree().cbeginLeaf(); + if (!leaf) return MaskT::create(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + return convertPointsToMask(grid, filter); +} + + +template ::Type> +OPENVDB_DEPRECATED +inline typename std::enable_if::value, + typename MaskT::Ptr>::type +convertPointsToMask(const PointDataGridT& grid, + const openvdb::math::Transform& transform, + const std::vector& includeGroups, + const std::vector& excludeGroups) +{ + auto leaf = grid.tree().cbeginLeaf(); + if (!leaf) return MaskT::create(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + return convertPointsToMask(grid, transform, filter); +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_MASK_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointMove.h b/openvdb/points/PointMove.h new file mode 100644 index 00000000..5c33283b --- /dev/null +++ b/openvdb/points/PointMove.h @@ -0,0 +1,1237 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Dan Bailey +/// +/// @file PointMove.h +/// +/// @brief Ability to move VDB Points using a custom deformer. +/// +/// Deformers used when moving points are in world space by default and must adhere +/// to the interface described in the example below: +/// @code +/// struct MyDeformer +/// { +/// // A reset is performed on each leaf in turn before the points in that leaf are +/// // deformed. A leaf and leaf index (standard leaf traversal order) are supplied as +/// // the arguments, which matches the functor interface for LeafManager::foreach(). +/// template +/// void reset(LeafNoteType& leaf, size_t idx); +/// +/// // Evaluate the deformer and modify the given position to generate the deformed +/// // position. An index iterator is supplied as the argument to allow querying the +/// // point offset or containing voxel coordinate. +/// template +/// void apply(Vec3d& position, const IndexIterT& iter) const; +/// }; +/// @endcode +/// +/// @note The DeformerTraits struct (defined in PointMask.h) can be used to configure +/// a deformer to evaluate in index space. + +#ifndef OPENVDB_POINTS_POINT_MOVE_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_MOVE_HAS_BEEN_INCLUDED + +#include + +#include +#include + +#include + +#include +#include // for std::begin(), std::end() +#include +#include // for std::iota() +#include +#include +#include + +class TestPointMove; + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +// dummy object for future use +namespace future { struct Advect { }; } + + +/// @brief Move points in a PointDataGrid using a custom deformer +/// @param points the PointDataGrid containing the points to be moved. +/// @param deformer a custom deformer that defines how to move the points. +/// @param filter an optional index filter +/// @param objectNotInUse for future use, this object is currently ignored +/// @param threaded enable or disable threading (threading is enabled by default) +template +inline void movePoints(PointDataGridT& points, + DeformerT& deformer, + const FilterT& filter = NullFilter(), + future::Advect* objectNotInUse = nullptr, + bool threaded = true); + + +/// @brief Move points in a PointDataGrid using a custom deformer and a new transform +/// @param points the PointDataGrid containing the points to be moved. +/// @param transform target transform to use for the resulting points. +/// @param deformer a custom deformer that defines how to move the points. +/// @param filter an optional index filter +/// @param objectNotInUse for future use, this object is currently ignored +/// @param threaded enable or disable threading (threading is enabled by default) +template +inline void movePoints(PointDataGridT& points, + const math::Transform& transform, + DeformerT& deformer, + const FilterT& filter = NullFilter(), + future::Advect* objectNotInUse = nullptr, + bool threaded = true); + + +// define leaf index in use as 32-bit +namespace point_move_internal { using LeafIndex = Index32; } + + +/// @brief A Deformer that caches the resulting positions from evaluating another Deformer +template +class CachedDeformer +{ +public: + using LeafIndex = point_move_internal::LeafIndex; + using Vec3T = typename math::Vec3; + using LeafVecT = std::vector; + using LeafMapT = std::unordered_map; + + // Internal data cache to allow the deformer to offer light-weight copying + struct Cache + { + struct Leaf + { + /// @brief clear data buffers and reset counter + void clear() { + vecData.clear(); + mapData.clear(); + totalSize = 0; + } + + LeafVecT vecData; + LeafMapT mapData; + Index totalSize = 0; + }; // struct Leaf + + std::vector leafs; + }; // struct Cache + + /// Cache is expected to be persistent for the lifetime of the CachedDeformer + explicit CachedDeformer(Cache& cache); + + /// Caches the result of evaluating the supplied point grid using the deformer and filter + /// @param grid the points to be moved + /// @param deformer the deformer to apply to the points + /// @param filter the point filter to use when evaluating the points + /// @param threaded enable or disable threading (threading is enabled by default) + template + void evaluate(PointDataGridT& grid, DeformerT& deformer, const FilterT& filter, + bool threaded = true); + + /// Stores pointers to the vector or map and optionally expands the map into a vector + /// @throw IndexError if idx is out-of-range of the leafs in the cache + template + void reset(const LeafT& leaf, size_t idx); + + /// Retrieve the new position from the cache + template + void apply(Vec3d& position, const IndexIterT& iter) const; + +private: + friend class ::TestPointMove; + + Cache& mCache; + const LeafVecT* mLeafVec = nullptr; + const LeafMapT* mLeafMap = nullptr; +}; // class CachedDeformer + + +//////////////////////////////////////// + + +namespace point_move_internal { + +using IndexArray = std::vector; + +using IndexTriple = std::tuple; +using IndexTripleArray = tbb::concurrent_vector; +using GlobalPointIndexMap = std::vector; +using GlobalPointIndexIndices = std::vector; + +using IndexPair = std::pair; +using IndexPairArray = std::vector; +using LocalPointIndexMap = std::vector; + +using LeafIndexArray = std::vector; +using LeafOffsetArray = std::vector; +using LeafMap = std::unordered_map; + + +template +struct BuildMoveMapsOp +{ + using LeafT = typename TreeT::LeafNodeType; + using LeafArrayT = std::vector; + using LeafManagerT = typename tree::LeafManager; + + BuildMoveMapsOp(const DeformerT& deformer, + GlobalPointIndexMap& globalMoveLeafMap, + LocalPointIndexMap& localMoveLeafMap, + const LeafMap& targetLeafMap, + const math::Transform& targetTransform, + const math::Transform& sourceTransform, + const FilterT& filter) + : mDeformer(deformer) + , mGlobalMoveLeafMap(globalMoveLeafMap) + , mLocalMoveLeafMap(localMoveLeafMap) + , mTargetLeafMap(targetLeafMap) + , mTargetTransform(targetTransform) + , mSourceTransform(sourceTransform) + , mFilter(filter) { } + + void operator()(LeafT& leaf, size_t idx) const + { + DeformerT deformer(mDeformer); + deformer.reset(leaf, idx); + + // determine source leaf node origin and offset in the source leaf vector + + Coord sourceLeafOrigin = leaf.origin(); + + auto sourceHandle = AttributeWriteHandle::create(leaf.attributeArray("P")); + + for (auto iter = leaf.beginIndexOn(mFilter); iter; iter++) { + + const bool useIndexSpace = DeformerTraits::IndexSpace; + + // extract index-space position and apply index-space deformation (if applicable) + + Vec3d positionIS = sourceHandle->get(*iter) + iter.getCoord().asVec3d(); + if (useIndexSpace) { + deformer.apply(positionIS, iter); + } + + // transform to world-space position and apply world-space deformation (if applicable) + + Vec3d positionWS = mSourceTransform.indexToWorld(positionIS); + if (!useIndexSpace) { + deformer.apply(positionWS, iter); + } + + // transform to index-space position of target grid + + positionIS = mTargetTransform.worldToIndex(positionWS); + + // determine target voxel and offset + + Coord targetVoxel = Coord::round(positionIS); + Index targetOffset = LeafT::coordToOffset(targetVoxel); + + // set new local position in source transform space (if point has been deformed) + + Vec3d voxelPosition(positionIS - targetVoxel.asVec3d()); + sourceHandle->set(*iter, voxelPosition); + + // determine target leaf node origin and offset in the target leaf vector + + Coord targetLeafOrigin = targetVoxel & ~(LeafT::DIM - 1); + assert(mTargetLeafMap.find(targetLeafOrigin) != mTargetLeafMap.end()); + const LeafIndex targetLeafOffset(mTargetLeafMap.at(targetLeafOrigin)); + + // insert into move map based on whether point ends up in a new leaf node or not + + if (targetLeafOrigin == sourceLeafOrigin) { + mLocalMoveLeafMap[targetLeafOffset].emplace_back(targetOffset, *iter); + } + else { + mGlobalMoveLeafMap[targetLeafOffset].push_back(IndexTriple( + LeafIndex(static_cast(idx)), targetOffset, *iter)); + } + } + } + +private: + const DeformerT& mDeformer; + GlobalPointIndexMap& mGlobalMoveLeafMap; + LocalPointIndexMap& mLocalMoveLeafMap; + const LeafMap& mTargetLeafMap; + const math::Transform& mTargetTransform; + const math::Transform& mSourceTransform; + const FilterT& mFilter; +}; // struct BuildMoveMapsOp + +template +inline Index +indexOffsetFromVoxel(const Index voxelOffset, const LeafT& leaf, IndexArray& offsets) +{ + // compute the target point index by summing the point index of the previous + // voxel with the current number of points added to this voxel, tracked by the + // offsets array + + Index targetOffset = offsets[voxelOffset]++; + if (voxelOffset > 0) { + targetOffset += static_cast(leaf.getValue(voxelOffset - 1)); + } + return targetOffset; +} + + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + + +template +struct GlobalMovePointsOp +{ + using LeafT = typename TreeT::LeafNodeType; + using LeafArrayT = std::vector; + using LeafManagerT = typename tree::LeafManager; + using AttributeArrays = std::vector; + + GlobalMovePointsOp(LeafOffsetArray& offsetMap, + LeafManagerT& sourceLeafManager, + const Index attributeIndex, + const GlobalPointIndexMap& moveLeafMap, + const GlobalPointIndexIndices& moveLeafIndices) + : mOffsetMap(offsetMap) + , mSourceLeafManager(sourceLeafManager) + , mAttributeIndex(attributeIndex) + , mMoveLeafMap(moveLeafMap) + , mMoveLeafIndices(moveLeafIndices) { } + + // A CopyIterator is designed to use the indices in a GlobalPointIndexMap for this leaf + // and match the interface required for AttributeArray::copyValues() + struct CopyIterator + { + CopyIterator(const LeafT& leaf, const IndexArray& sortedIndices, + const IndexTripleArray& moveIndices, IndexArray& offsets) + : mLeaf(leaf) + , mSortedIndices(sortedIndices) + , mMoveIndices(moveIndices) + , mOffsets(offsets) { } + + operator bool() const { return bool(mIt); } + + void reset(Index startIndex, Index endIndex) + { + mIndex = startIndex; + mEndIndex = endIndex; + this->advance(); + } + + CopyIterator& operator++() + { + this->advance(); + return *this; + } + + Index leafIndex(Index i) const + { + if (i < mSortedIndices.size()) { + return std::get<0>(this->leafIndexTriple(i)); + } + return std::numeric_limits::max(); + } + + Index sourceIndex() const + { + assert(mIt); + return std::get<2>(*mIt); + } + + Index targetIndex() const + { + assert(mIt); + return indexOffsetFromVoxel(std::get<1>(*mIt), mLeaf, mOffsets); + } + + private: + void advance() + { + if (mIndex >= mEndIndex || mIndex >= mSortedIndices.size()) { + mIt = nullptr; + } + else { + mIt = &this->leafIndexTriple(mIndex); + } + ++mIndex; + } + + const IndexTriple& leafIndexTriple(Index i) const + { + return mMoveIndices[mSortedIndices[i]]; + } + + private: + const LeafT& mLeaf; + Index mIndex; + Index mEndIndex; + const IndexArray& mSortedIndices; + const IndexTripleArray& mMoveIndices; + IndexArray& mOffsets; + const IndexTriple* mIt = nullptr; + }; // struct CopyIterator + + void operator()(LeafT& leaf, size_t idx) const + { + const IndexTripleArray& moveIndices = mMoveLeafMap[idx]; + if (moveIndices.empty()) return; + const IndexArray& sortedIndices = mMoveLeafIndices[idx]; + + // extract per-voxel offsets for this leaf + + LeafIndexArray& offsets = mOffsetMap[idx]; + + // extract target array and ensure data is out-of-core and non-uniform + + auto& targetArray = leaf.attributeArray(mAttributeIndex); + targetArray.loadData(); + targetArray.expand(); + + // perform the copy + + CopyIterator copyIterator(leaf, sortedIndices, moveIndices, offsets); + + // use the sorted indices to track the index of the source leaf + + Index sourceLeafIndex = copyIterator.leafIndex(0); + Index startIndex = 0; + + for (size_t i = 1; i <= sortedIndices.size(); i++) { + Index endIndex = static_cast(i); + Index newSourceLeafIndex = copyIterator.leafIndex(endIndex); + + // when it changes, do a batch-copy of all the indices that lie within this range + // TODO: this step could use nested parallelization for cases where there are a + // large number of points being moved per attribute + + if (newSourceLeafIndex > sourceLeafIndex) { + copyIterator.reset(startIndex, endIndex); + + const LeafT& sourceLeaf = mSourceLeafManager.leaf(sourceLeafIndex); + const auto& sourceArray = sourceLeaf.constAttributeArray(mAttributeIndex); + sourceArray.loadData(); + + targetArray.copyValuesUnsafe(sourceArray, copyIterator); + + sourceLeafIndex = newSourceLeafIndex; + startIndex = endIndex; + } + } + } + +private: + LeafOffsetArray& mOffsetMap; + LeafManagerT& mSourceLeafManager; + const Index mAttributeIndex; + const GlobalPointIndexMap& mMoveLeafMap; + const GlobalPointIndexIndices& mMoveLeafIndices; +}; // struct GlobalMovePointsOp + + +template +struct LocalMovePointsOp +{ + using LeafT = typename TreeT::LeafNodeType; + using LeafArrayT = std::vector; + using LeafManagerT = typename tree::LeafManager; + using AttributeArrays = std::vector; + + LocalMovePointsOp( LeafOffsetArray& offsetMap, + const LeafIndexArray& sourceIndices, + LeafManagerT& sourceLeafManager, + const Index attributeIndex, + const LocalPointIndexMap& moveLeafMap) + : mOffsetMap(offsetMap) + , mSourceIndices(sourceIndices) + , mSourceLeafManager(sourceLeafManager) + , mAttributeIndex(attributeIndex) + , mMoveLeafMap(moveLeafMap) { } + + // A CopyIterator is designed to use the indices in a LocalPointIndexMap for this leaf + // and match the interface required for AttributeArray::copyValues() + struct CopyIterator + { + CopyIterator(const LeafT& leaf, const IndexPairArray& indices, IndexArray& offsets) + : mLeaf(leaf) + , mIndices(indices) + , mOffsets(offsets) { } + + operator bool() const { return mIndex < static_cast(mIndices.size()); } + + CopyIterator& operator++() { ++mIndex; return *this; } + + Index sourceIndex() const + { + return mIndices[mIndex].second; + } + + Index targetIndex() const + { + return indexOffsetFromVoxel(mIndices[mIndex].first, mLeaf, mOffsets); + } + + private: + const LeafT& mLeaf; + const IndexPairArray& mIndices; + IndexArray& mOffsets; + int mIndex = 0; + }; // struct CopyIterator + + void operator()(LeafT& leaf, size_t idx) const + { + const IndexPairArray& moveIndices = mMoveLeafMap[idx]; + if (moveIndices.empty()) return; + + // extract per-voxel offsets for this leaf + + LeafIndexArray& offsets = mOffsetMap[idx]; + + // extract source array that has the same origin as the target leaf + + assert(idx < mSourceIndices.size()); + const Index sourceLeafOffset(mSourceIndices[idx]); + LeafT& sourceLeaf = mSourceLeafManager.leaf(sourceLeafOffset); + const auto& sourceArray = sourceLeaf.constAttributeArray(mAttributeIndex); + sourceArray.loadData(); + + // extract target array and ensure data is out-of-core and non-uniform + + auto& targetArray = leaf.attributeArray(mAttributeIndex); + targetArray.loadData(); + targetArray.expand(); + + // perform the copy + + CopyIterator copyIterator(leaf, moveIndices, offsets); + targetArray.copyValuesUnsafe(sourceArray, copyIterator); + } + +private: + LeafOffsetArray& mOffsetMap; + const LeafIndexArray& mSourceIndices; + LeafManagerT& mSourceLeafManager; + const Index mAttributeIndex; + const LocalPointIndexMap& mMoveLeafMap; +}; // struct LocalMovePointsOp + + +#else + + +// The following infrastructure - ArrayProcessor, PerformTypedMoveOp, processTypedArray() +// is required to improve AttributeArray copying performance beyond using the virtual function +// AttributeArray::set(Index, AttributeArray&, Index). An ABI=6 addition to AttributeArray +// improves this by introducing an AttributeArray::copyValues() method to significantly +// simplify this logic without incurring the same virtual function cost. + + +/// Helper class used internally by processTypedArray() +template +struct ArrayProcessor { + static inline void call(OpType& op, const AttributeArray& array) { +#ifdef _MSC_VER + op.operator()(array); +#else + op.template operator()(array); +#endif + } +}; + + +/// @brief Utility function that, given a generic attribute array, +/// calls a functor with the fully-resolved value type of the array +template +bool +processTypedArray(const ArrayType& array, OpType& op) +{ + using namespace openvdb; + using namespace openvdb::math; + if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType()) ArrayProcessor::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else if (array.template hasValueType>()) ArrayProcessor, OpType>::call(op, array); + else return false; + return true; +} + + +/// Cache read and write attribute handles to amortize construction cost +struct AttributeHandles +{ + using HandleArray = std::vector::Ptr>; + + AttributeHandles(const size_t size) + : mHandles() { mHandles.reserve(size); } + + AttributeArray& getArray(const Index leafOffset) + { + auto* handle = reinterpret_cast*>(mHandles[leafOffset].get()); + assert(handle); + return handle->array(); + } + + const AttributeArray& getConstArray(const Index leafOffset) const + { + const auto* handle = mHandles[leafOffset].get(); + assert(handle); + return handle->array(); + } + + template + AttributeHandle& getHandle(const Index leafOffset) + { + auto* handle = reinterpret_cast*>(mHandles[leafOffset].get()); + assert(handle); + return *handle; + } + + template + AttributeWriteHandle& getWriteHandle(const Index leafOffset) + { + auto* handle = reinterpret_cast*>(mHandles[leafOffset].get()); + assert(handle); + return *handle; + } + + /// Create a handle and reinterpret cast as an int handle to store + struct CacheHandleOp + { + CacheHandleOp(HandleArray& handles) + : mHandles(handles) { } + + template + void operator()(const AttributeArray& array) const + { + auto* handleAsInt = reinterpret_cast*>( + new AttributeHandle(array)); + mHandles.emplace_back(handleAsInt); + } + + private: + HandleArray& mHandles; + }; // struct CacheHandleOp + + template + void cache(const LeafRangeT& range, const Index attributeIndex) + { + using namespace openvdb::math; + + mHandles.clear(); + CacheHandleOp op(mHandles); + + for (auto leaf = range.begin(); leaf; ++leaf) { + const auto& array = leaf->constAttributeArray(attributeIndex); + processTypedArray(array, op); + } + } + +private: + HandleArray mHandles; +}; // struct AttributeHandles + + +template +struct GlobalMovePointsOp +{ + using LeafT = typename TreeT::LeafNodeType; + using LeafArrayT = std::vector; + using LeafManagerT = typename tree::LeafManager; + + GlobalMovePointsOp(LeafOffsetArray& offsetMap, + AttributeHandles& targetHandles, + AttributeHandles& sourceHandles, + const Index attributeIndex, + const GlobalPointIndexMap& moveLeafMap, + const GlobalPointIndexIndices& moveLeafIndices) + : mOffsetMap(offsetMap) + , mTargetHandles(targetHandles) + , mSourceHandles(sourceHandles) + , mAttributeIndex(attributeIndex) + , mMoveLeafMap(moveLeafMap) + , mMoveLeafIndices(moveLeafIndices) { } + + struct PerformTypedMoveOp + { + PerformTypedMoveOp(AttributeHandles& targetHandles, AttributeHandles& sourceHandles, + Index targetOffset, const LeafT& targetLeaf, + IndexArray& offsets, const IndexTripleArray& indices, + const IndexArray& sortedIndices) + : mTargetHandles(targetHandles) + , mSourceHandles(sourceHandles) + , mTargetOffset(targetOffset) + , mTargetLeaf(targetLeaf) + , mOffsets(offsets) + , mIndices(indices) + , mSortedIndices(sortedIndices) { } + + template + void operator()(const AttributeArray&) const + { + auto& targetHandle = mTargetHandles.getWriteHandle(mTargetOffset); + targetHandle.expand(); + + for (const auto& index : mSortedIndices) { + const auto& it = mIndices[index]; + const auto& sourceHandle = mSourceHandles.getHandle(std::get<0>(it)); + const Index targetIndex = indexOffsetFromVoxel(std::get<1>(it), mTargetLeaf, mOffsets); + for (Index i = 0; i < sourceHandle.stride(); i++) { + ValueT sourceValue = sourceHandle.get(std::get<2>(it), i); + targetHandle.set(targetIndex, i, sourceValue); + } + } + } + + private: + AttributeHandles& mTargetHandles; + AttributeHandles& mSourceHandles; + Index mTargetOffset; + const LeafT& mTargetLeaf; + IndexArray& mOffsets; + const IndexTripleArray& mIndices; + const IndexArray& mSortedIndices; + }; // struct PerformTypedMoveOp + + void performMove(Index targetOffset, const LeafT& targetLeaf, + IndexArray& offsets, const IndexTripleArray& indices, + const IndexArray& sortedIndices) const + { + auto& targetArray = mTargetHandles.getArray(targetOffset); + targetArray.loadData(); + targetArray.expand(); + + for (const auto& index : sortedIndices) { + const auto& it = indices[index]; + + const auto& sourceArray = mSourceHandles.getConstArray(std::get<0>(it)); + + const Index sourceOffset = std::get<2>(it); + const Index targetOffset = indexOffsetFromVoxel(std::get<1>(it), targetLeaf, offsets); + + targetArray.set(targetOffset, sourceArray, sourceOffset); + } + } + + void operator()(LeafT& leaf, size_t aIdx) const + { + const Index idx(static_cast(aIdx)); + const auto& moveIndices = mMoveLeafMap[aIdx]; + if (moveIndices.empty()) return; + const auto& sortedIndices = mMoveLeafIndices[aIdx]; + + // extract per-voxel offsets for this leaf + + auto& offsets = mOffsetMap[aIdx]; + + const auto& array = leaf.constAttributeArray(mAttributeIndex); + + PerformTypedMoveOp op(mTargetHandles, mSourceHandles, idx, leaf, offsets, + moveIndices, sortedIndices); + if (!processTypedArray(array, op)) { + this->performMove(idx, leaf, offsets, moveIndices, sortedIndices); + } + } + +private: + LeafOffsetArray& mOffsetMap; + AttributeHandles& mTargetHandles; + AttributeHandles& mSourceHandles; + const Index mAttributeIndex; + const GlobalPointIndexMap& mMoveLeafMap; + const GlobalPointIndexIndices& mMoveLeafIndices; +}; // struct GlobalMovePointsOp + + +template +struct LocalMovePointsOp +{ + using LeafT = typename TreeT::LeafNodeType; + using LeafArrayT = std::vector; + using LeafManagerT = typename tree::LeafManager; + + LocalMovePointsOp( LeafOffsetArray& offsetMap, + AttributeHandles& targetHandles, + const LeafIndexArray& sourceIndices, + AttributeHandles& sourceHandles, + const Index attributeIndex, + const LocalPointIndexMap& moveLeafMap) + : mOffsetMap(offsetMap) + , mTargetHandles(targetHandles) + , mSourceIndices(sourceIndices) + , mSourceHandles(sourceHandles) + , mAttributeIndex(attributeIndex) + , mMoveLeafMap(moveLeafMap) { } + + struct PerformTypedMoveOp + { + PerformTypedMoveOp(AttributeHandles& targetHandles, AttributeHandles& sourceHandles, + Index targetOffset, Index sourceOffset, const LeafT& targetLeaf, + IndexArray& offsets, const IndexPairArray& indices) + : mTargetHandles(targetHandles) + , mSourceHandles(sourceHandles) + , mTargetOffset(targetOffset) + , mSourceOffset(sourceOffset) + , mTargetLeaf(targetLeaf) + , mOffsets(offsets) + , mIndices(indices) { } + + template + void operator()(const AttributeArray&) const + { + auto& targetHandle = mTargetHandles.getWriteHandle(mTargetOffset); + const auto& sourceHandle = mSourceHandles.getHandle(mSourceOffset); + + targetHandle.expand(); + + for (const auto& it : mIndices) { + const Index targetIndex = indexOffsetFromVoxel(it.first, mTargetLeaf, mOffsets); + for (Index i = 0; i < sourceHandle.stride(); i++) { + ValueT sourceValue = sourceHandle.get(it.second, i); + targetHandle.set(targetIndex, i, sourceValue); + } + } + } + + private: + AttributeHandles& mTargetHandles; + AttributeHandles& mSourceHandles; + Index mTargetOffset; + Index mSourceOffset; + const LeafT& mTargetLeaf; + IndexArray& mOffsets; + const IndexPairArray& mIndices; + }; // struct PerformTypedMoveOp + + template + void performTypedMove(Index sourceOffset, Index targetOffset, const LeafT& targetLeaf, + IndexArray& offsets, const IndexPairArray& indices) const + { + auto& targetHandle = mTargetHandles.getWriteHandle(targetOffset); + const auto& sourceHandle = mSourceHandles.getHandle(sourceOffset); + + targetHandle.expand(); + + for (const auto& it : indices) { + const Index tgtOffset = indexOffsetFromVoxel(it.first, targetLeaf, offsets); + for (Index i = 0; i < sourceHandle.stride(); i++) { + ValueT sourceValue = sourceHandle.get(it.second, i); + targetHandle.set(tgtOffset, i, sourceValue); + } + } + } + + void performMove(Index targetOffset, Index sourceOffset, const LeafT& targetLeaf, + IndexArray& offsets, const IndexPairArray& indices) const + { + auto& targetArray = mTargetHandles.getArray(targetOffset); + const auto& sourceArray = mSourceHandles.getConstArray(sourceOffset); + + for (const auto& it : indices) { + const Index sourceOffset = it.second; + const Index targetOffset = indexOffsetFromVoxel(it.first, targetLeaf, offsets); + + targetArray.set(targetOffset, sourceArray, sourceOffset); + } + } + + void operator()(const LeafT& leaf, size_t aIdx) const + { + const Index idx(static_cast(aIdx)); + const auto& moveIndices = mMoveLeafMap.at(aIdx); + if (moveIndices.empty()) return; + + // extract target leaf and per-voxel offsets for this leaf + + auto& offsets = mOffsetMap[aIdx]; + + // extract source leaf that has the same origin as the target leaf (if any) + + assert(aIdx < mSourceIndices.size()); + const Index sourceOffset(mSourceIndices[aIdx]); + + const auto& array = leaf.constAttributeArray(mAttributeIndex); + + PerformTypedMoveOp op(mTargetHandles, mSourceHandles, + idx, sourceOffset, leaf, offsets, moveIndices); + if (!processTypedArray(array, op)) { + this->performMove(idx, sourceOffset, leaf, offsets, moveIndices); + } + } + +private: + LeafOffsetArray& mOffsetMap; + AttributeHandles& mTargetHandles; + const LeafIndexArray& mSourceIndices; + AttributeHandles& mSourceHandles; + const Index mAttributeIndex; + const LocalPointIndexMap& mMoveLeafMap; +}; // struct LocalMovePointsOp + + +#endif // OPENVDB_ABI_VERSION_NUMBER >= 6 + + +} // namespace point_move_internal + + +//////////////////////////////////////// + + +template +inline void movePoints( PointDataGridT& points, + const math::Transform& transform, + DeformerT& deformer, + const FilterT& filter, + future::Advect* objectNotInUse, + bool threaded) +{ + using LeafIndex = point_move_internal::LeafIndex; + using PointDataTreeT = typename PointDataGridT::TreeType; + using LeafT = typename PointDataTreeT::LeafNodeType; + using LeafManagerT = typename tree::LeafManager; + + using namespace point_move_internal; + + // this object is for future use only + assert(!objectNotInUse); + (void)objectNotInUse; + + PointDataTreeT& tree = points.tree(); + + // early exit if no LeafNodes + + PointDataTree::LeafCIter iter = tree.cbeginLeaf(); + + if (!iter) return; + + // build voxel topology taking into account any point group deletion + + auto newPoints = point_mask_internal::convertPointsToScalar( + points, transform, filter, deformer, threaded); + auto& newTree = newPoints->tree(); + + // create leaf managers for both trees + + LeafManagerT sourceLeafManager(tree); + LeafManagerT targetLeafManager(newTree); + + // extract the existing attribute set + const auto& existingAttributeSet = points.tree().cbeginLeaf()->attributeSet(); + + // build a coord -> index map for looking up target leafs by origin and a faster + // unordered map for finding the source index from a target index + + LeafMap targetLeafMap; + LeafIndexArray sourceIndices(targetLeafManager.leafCount(), + std::numeric_limits::max()); + + LeafOffsetArray offsetMap(targetLeafManager.leafCount()); + + { + LeafMap sourceLeafMap; + auto sourceRange = sourceLeafManager.leafRange(); + for (auto leaf = sourceRange.begin(); leaf; ++leaf) { + sourceLeafMap.insert({leaf->origin(), LeafIndex(static_cast(leaf.pos()))}); + } + auto targetRange = targetLeafManager.leafRange(); + for (auto leaf = targetRange.begin(); leaf; ++leaf) { + targetLeafMap.insert({leaf->origin(), LeafIndex(static_cast(leaf.pos()))}); + } + + // acquire registry lock to avoid locking when appending attributes in parallel + + AttributeArray::ScopedRegistryLock lock; + + // perform four independent per-leaf operations in parallel + targetLeafManager.foreach( + [&](LeafT& leaf, size_t idx) { + // map frequency => cumulative histogram + auto* buffer = leaf.buffer().data(); + for (Index i = 1; i < leaf.buffer().size(); i++) { + buffer[i] = buffer[i-1] + buffer[i]; + } + // replace attribute set with a copy of the existing one + leaf.replaceAttributeSet( + new AttributeSet(existingAttributeSet, leaf.getLastValue(), &lock), + /*allowMismatchingDescriptors=*/true); + // store the index of the source leaf in a corresponding target leaf array + const auto it = sourceLeafMap.find(leaf.origin()); + if (it != sourceLeafMap.end()) { + sourceIndices[idx] = it->second; + } + // allocate offset maps + offsetMap[idx].resize(LeafT::SIZE); + }, + threaded); + } + + // moving leaf + + GlobalPointIndexMap globalMoveLeafMap(targetLeafManager.leafCount()); + LocalPointIndexMap localMoveLeafMap(targetLeafManager.leafCount()); + + // build global and local move leaf maps and update local positions + + if (filter.state() == index::ALL) { + NullFilter nullFilter; + BuildMoveMapsOp op(deformer, + globalMoveLeafMap, localMoveLeafMap, targetLeafMap, + transform, points.transform(), nullFilter); + sourceLeafManager.foreach(op, threaded); + } else { + BuildMoveMapsOp op(deformer, + globalMoveLeafMap, localMoveLeafMap, targetLeafMap, + transform, points.transform(), filter); + sourceLeafManager.foreach(op, threaded); + } + + // build a sorted index vector for each leaf that references the global move map + // indices in order of their source leafs and voxels to ensure determinism in the + // resulting point orders + + GlobalPointIndexIndices globalMoveLeafIndices(globalMoveLeafMap.size()); + + targetLeafManager.foreach( + [&](LeafT& /*leaf*/, size_t idx) { + const IndexTripleArray& moveIndices = globalMoveLeafMap[idx]; + if (moveIndices.empty()) return; + + IndexArray& sortedIndices = globalMoveLeafIndices[idx]; + sortedIndices.resize(moveIndices.size()); + std::iota(std::begin(sortedIndices), std::end(sortedIndices), 0); + std::sort(std::begin(sortedIndices), std::end(sortedIndices), + [&](int i, int j) + { + const Index& indexI0(std::get<0>(moveIndices[i])); + const Index& indexJ0(std::get<0>(moveIndices[j])); + if (indexI0 < indexJ0) return true; + if (indexI0 > indexJ0) return false; + return std::get<2>(moveIndices[i]) < std::get<2>(moveIndices[j]); + } + ); + }, + threaded); + +#if OPENVDB_ABI_VERSION_NUMBER < 6 + // initialize attribute handles + AttributeHandles sourceHandles(sourceLeafManager.leafCount()); + AttributeHandles targetHandles(targetLeafManager.leafCount()); +#endif + + for (const auto& it : existingAttributeSet.descriptor().map()) { + + const Index attributeIndex = static_cast(it.second); + + // zero offsets + targetLeafManager.foreach( + [&offsetMap](const LeafT& /*leaf*/, size_t idx) { + std::fill(offsetMap[idx].begin(), offsetMap[idx].end(), 0); + }, + threaded); + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + + // move points between leaf nodes + + GlobalMovePointsOp globalMoveOp(offsetMap, + sourceLeafManager, attributeIndex, globalMoveLeafMap, globalMoveLeafIndices); + targetLeafManager.foreach(globalMoveOp, threaded); + + // move points within leaf nodes + + LocalMovePointsOp localMoveOp(offsetMap, + sourceIndices, sourceLeafManager, attributeIndex, localMoveLeafMap); + targetLeafManager.foreach(localMoveOp, threaded); +#else + // cache attribute handles + + sourceHandles.cache(sourceLeafManager.leafRange(), attributeIndex); + targetHandles.cache(targetLeafManager.leafRange(), attributeIndex); + + // move points between leaf nodes + + GlobalMovePointsOp globalMoveOp(offsetMap, targetHandles, + sourceHandles, attributeIndex, globalMoveLeafMap, globalMoveLeafIndices); + targetLeafManager.foreach(globalMoveOp, threaded); + + // move points within leaf nodes + + LocalMovePointsOp localMoveOp(offsetMap, targetHandles, + sourceIndices, sourceHandles, + attributeIndex, localMoveLeafMap); + targetLeafManager.foreach(localMoveOp, threaded); +#endif // OPENVDB_ABI_VERSION_NUMBER >= 6 + } + + points.setTree(newPoints->treePtr()); +} + + +template +inline void movePoints( PointDataGridT& points, + DeformerT& deformer, + const FilterT& filter, + future::Advect* objectNotInUse, + bool threaded) +{ + movePoints(points, points.transform(), deformer, filter, objectNotInUse, threaded); +} + + +//////////////////////////////////////// + + +template +CachedDeformer::CachedDeformer(Cache& cache) + : mCache(cache) { } + + +template +template +void CachedDeformer::evaluate(PointDataGridT& grid, DeformerT& deformer, const FilterT& filter, + bool threaded) +{ + using TreeT = typename PointDataGridT::TreeType; + using LeafT = typename TreeT::LeafNodeType; + using LeafManagerT = typename tree::LeafManager; + LeafManagerT leafManager(grid.tree()); + + // initialize cache + auto& leafs = mCache.leafs; + leafs.resize(leafManager.leafCount()); + + const auto& transform = grid.transform(); + + // insert deformed positions into the cache + + auto cachePositionsOp = [&](const LeafT& leaf, size_t idx) { + + const Index64 totalPointCount = leaf.pointCount(); + if (totalPointCount == 0) return; + + // deformer is copied to ensure that it is unique per-thread + + DeformerT newDeformer(deformer); + + newDeformer.reset(leaf, idx); + + auto handle = AttributeHandle::create(leaf.constAttributeArray("P")); + + auto& cache = leafs[idx]; + cache.clear(); + + // only insert into a vector directly if the filter evaluates all points + // and all points are stored in active voxels + const bool useVector = filter.state() == index::ALL && + (leaf.isDense() || (leaf.onPointCount() == leaf.pointCount())); + if (useVector) { + cache.vecData.resize(totalPointCount); + } + + for (auto iter = leaf.beginIndexOn(filter); iter; iter++) { + + // extract index-space position and apply index-space deformation (if defined) + + Vec3d position = handle->get(*iter) + iter.getCoord().asVec3d(); + + // if deformer is designed to be used in index-space, perform deformation prior + // to transforming position to world-space, otherwise perform deformation afterwards + + if (DeformerTraits::IndexSpace) { + newDeformer.apply(position, iter); + position = transform.indexToWorld(position); + } + else { + position = transform.indexToWorld(position); + newDeformer.apply(position, iter); + } + + // insert new position into the cache + + if (useVector) { + cache.vecData[*iter] = static_cast(position); + } + else { + cache.mapData.insert({*iter, static_cast(position)}); + } + } + + // store the total number of points to allow use of an expanded vector on access + + if (!cache.mapData.empty()) { + cache.totalSize = static_cast(totalPointCount); + } + }; + + leafManager.foreach(cachePositionsOp, threaded); +} + + +template +template +void CachedDeformer::reset(const LeafT& /*leaf*/, size_t idx) +{ + if (idx >= mCache.leafs.size()) { + if (mCache.leafs.empty()) { + throw IndexError("No leafs in cache, perhaps CachedDeformer has not been evaluated?"); + } else { + throw IndexError("Leaf index is out-of-range of cache leafs."); + } + } + auto& cache = mCache.leafs[idx]; + if (!cache.mapData.empty()) { + mLeafMap = &cache.mapData; + mLeafVec = nullptr; + } + else { + mLeafVec = &cache.vecData; + mLeafMap = nullptr; + } +} + + +template +template +void CachedDeformer::apply(Vec3d& position, const IndexIterT& iter) const +{ + assert(*iter >= 0); + + if (mLeafMap) { + auto it = mLeafMap->find(*iter); + if (it == mLeafMap->end()) return; + position = static_cast(it->second); + } + else { + assert(mLeafVec); + + if (mLeafVec->empty()) return; + assert(*iter < mLeafVec->size()); + position = static_cast((*mLeafVec)[*iter]); + } +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_MOVE_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointSample.h b/openvdb/points/PointSample.h new file mode 100644 index 00000000..3c588936 --- /dev/null +++ b/openvdb/points/PointSample.h @@ -0,0 +1,544 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Nick Avramoussis, Francisco Gochez, Dan Bailey +/// +/// @file points/PointSample.h +/// +/// @brief Sample a VDB Grid onto a VDB Points attribute + +#ifndef OPENVDB_POINTS_POINT_SAMPLE_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_SAMPLE_HAS_BEEN_INCLUDED + +#include +#include + +#include "PointDataGrid.h" +#include "PointAttribute.h" + +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + + +/// @brief Performs closest point sampling from a VDB grid onto a VDB Points attribute +/// @param points the PointDataGrid whose points will be sampled on to +/// @param sourceGrid VDB grid which will be sampled +/// @param targetAttribute a target attribute on the points which will hold samples. This +/// attribute will be created with the source grid type if it does +/// not exist, and with the source grid name if the name is empty +/// @param filter an optional index filter +/// @param interrupter an optional interrupter +/// @note The target attribute may exist provided it can be cast to the SourceGridT ValueType +template +inline void pointSample(PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute = "", + const FilterT& filter = NullFilter(), + InterrupterT* const interrupter = nullptr); + + +/// @brief Performs tri-linear sampling from a VDB grid onto a VDB Points attribute +/// @param points the PointDataGrid whose points will be sampled on to +/// @param sourceGrid VDB grid which will be sampled +/// @param targetAttribute a target attribute on the points which will hold samples. This +/// attribute will be created with the source grid type if it does +/// not exist, and with the source grid name if the name is empty +/// @param filter an optional index filter +/// @param interrupter an optional interrupter +/// @note The target attribute may exist provided it can be cast to the SourceGridT ValueType +template +inline void boxSample( PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute = "", + const FilterT& filter = NullFilter(), + InterrupterT* const interrupter = nullptr); + + +/// @brief Performs tri-quadratic sampling from a VDB grid onto a VDB Points attribute +/// @param points the PointDataGrid whose points will be sampled on to +/// @param sourceGrid VDB grid which will be sampled +/// @param targetAttribute a target attribute on the points which will hold samples. This +/// attribute will be created with the source grid type if it does +/// not exist, and with the source grid name if the name is empty +/// @param filter an optional index filter +/// @param interrupter an optional interrupter +/// @note The target attribute may exist provided it can be cast to the SourceGridT ValueType +template +inline void quadraticSample(PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute = "", + const FilterT& filter = NullFilter(), + InterrupterT* const interrupter = nullptr); + + +// This struct samples the source grid accessor using the world-space position supplied, +// with SamplerT providing the sampling scheme. In the case where ValueT does not match +// the value type of the source grid, the sample() method will also convert the sampled +// value into a ValueT value, using round-to-nearest for float-to-integer conversion. +struct SampleWithRounding +{ + template + inline ValueT sample(const AccessorT& accessor, const Vec3d& position) const; +}; + + +// A dummy struct that is used to mean that the sampled attribute should either match the type +// of the existing attribute or the type of the source grid (if the attribute doesn't exist yet) +struct DummySampleType { }; + + +/// @brief Performs sampling and conversion from a VDB grid onto a VDB Points attribute +/// @param order the sampling order - 0 = closest-point, 1 = trilinear, 2 = triquadratic +/// @param points the PointDataGrid whose points will be sampled on to +/// @param sourceGrid VDB grid which will be sampled +/// @param targetAttribute a target attribute on the points which will hold samples. This +/// attribute will be created with the source grid type if it does +/// not exist, and with the source grid name if the name is empty +/// @param filter an optional index filter +/// @param sampler handles sampling and conversion into the target attribute type, +/// which by default this uses the SampleWithRounding struct. +/// @param interrupter an optional interrupter +/// @param threaded enable or disable threading (threading is enabled by default) +/// @note The target attribute may exist provided it can be cast to the SourceGridT ValueType +template +inline void sampleGrid( size_t order, + PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute, + const FilterT& filter = NullFilter(), + const SamplerT& sampler = SampleWithRounding(), + InterrupterT* const interrupter = nullptr, + const bool threaded = true); + + +/////////////////////////////////////////////////// + + +namespace point_sample_internal { + + +template +struct CompatibleTypes { enum { value = std::is_constructible::value }; }; + +// Specializations for types that can be converted from source grid to target attribute +template struct CompatibleTypes< + T, T> { enum { value = true }; }; +template struct CompatibleTypes< + T, math::Vec2> { enum { value = true }; }; +template struct CompatibleTypes< + T, math::Vec3> { enum { value = true }; }; +template struct CompatibleTypes< + T, math::Vec4> { enum { value = true }; }; +template struct CompatibleTypes< + math::Vec2, math::Vec2> { enum { value = true }; }; +template struct CompatibleTypes< + math::Vec3, math::Vec3> { enum { value = true }; }; +template struct CompatibleTypes< + math::Vec4, math::Vec4> { enum { value = true }; }; +template struct CompatibleTypes< + math::Vec2, math::Vec2> { enum { value = CompatibleTypes::value }; }; +template struct CompatibleTypes< + math::Vec3, math::Vec3> { enum { value = CompatibleTypes::value }; }; +template struct CompatibleTypes< + math::Vec4, math::Vec4> { enum { value = CompatibleTypes::value }; }; +template struct CompatibleTypes< + ValueMask, T> { enum { value = CompatibleTypes::value }; }; + + +// Ability to access the Staggered template parameter from tools::Sampler +template struct SamplerTraits { + static const bool Staggered = false; +}; +template struct SamplerTraits> { + static const bool Staggered = T1; +}; + + +// default sampling is incompatible, so throw an error +template +struct SampleWithRoundingOp +{ + static inline void sample(ValueT&, const AccessorT&, const Vec3d&) + { + std::ostringstream ostr; + ostr << "Cannot sample a " << typeNameAsString() + << " grid on to a " << typeNameAsString() << " attribute"; + OPENVDB_THROW(TypeError, ostr.str()); + } +}; +// partial specialization to handle sampling and rounding of compatible conversion +template +struct SampleWithRoundingOp +{ + static inline void sample(ValueT& value, const AccessorT& accessor, const Vec3d& position) + { + value = ValueT(math::Round(SamplerT::sample(accessor, position))); + } +}; +// partial specialization to handle sampling and simple casting of compatible conversion +template +struct SampleWithRoundingOp +{ + static inline void sample(ValueT& value, const AccessorT& accessor, const Vec3d& position) + { + value = ValueT(SamplerT::sample(accessor, position)); + } +}; + + +template +class PointDataSampler +{ +public: + PointDataSampler(size_t order, + PointDataGridT& points, + const SamplerT& sampler, + const FilterT& filter, + InterrupterT* const interrupter, + const bool threaded) + : mOrder(order) + , mPoints(points) + , mSampler(sampler) + , mFilter(filter) + , mInterrupter(interrupter) + , mThreaded(threaded) { } + +private: + // No-op transformation + struct AlignedTransform + { + inline Vec3d transform(const Vec3d& position) const { return position; } + }; // struct AlignedTransform + + // Re-sample world-space position from source to target transforms + struct NonAlignedTransform + { + NonAlignedTransform(const math::Transform& source, const math::Transform& target) + : mSource(source) + , mTarget(target) { } + + inline Vec3d transform(const Vec3d& position) const + { + return mSource.worldToIndex(mTarget.indexToWorld(position)); + } + + private: + const math::Transform& mSource; + const math::Transform& mTarget; + }; // struct NonAlignedTransform + + // A simple convenience wrapper that contains the source grid accessor and the sampler + template + struct SamplerWrapper + { + using ValueType = ValueT; + using SourceAccessorT = typename SourceGridT::ConstAccessor; + + SamplerWrapper(const SourceGridT& sourceGrid, const SamplerT& sampler) + : mAccessor(sourceGrid.getConstAccessor()) + , mSampler(sampler) { } + + // note that creating a new accessor from the underlying tree is faster than + // copying an existing accessor + SamplerWrapper(const SamplerWrapper& other) + : mAccessor(other.mAccessor.tree()) + , mSampler(other.mSampler) { } + + inline ValueT sample(const Vec3d& position) const { + return mSampler.template sample( + mAccessor, position); + } + + private: + SourceAccessorT mAccessor; + const SamplerT& mSampler; + }; // struct SamplerWrapper + + template + inline void doSample(const SamplerWrapperT& sampleWrapper, const Index targetIndex, + const TransformerT& transformer) + { + using PointDataTreeT = typename PointDataGridT::TreeType; + using LeafT = typename PointDataTreeT::LeafNodeType; + using LeafManagerT = typename tree::LeafManager; + + const auto& filter(mFilter); + const auto& interrupter(mInterrupter); + + auto sampleLambda = [targetIndex, &sampleWrapper, &transformer, &filter, &interrupter]( + LeafT& leaf, size_t /*idx*/) + { + using TargetHandleT = AttributeWriteHandle; + + if (util::wasInterrupted(interrupter)) { + tbb::task::self().cancel_group_execution(); + return; + } + + SamplerWrapperT newSampleWrapper(sampleWrapper); + auto positionHandle = AttributeHandle::create(leaf.constAttributeArray("P")); + auto targetHandle = TargetHandleT::create(leaf.attributeArray(targetIndex)); + for (auto iter = leaf.beginIndexOn(filter); iter; ++iter) { + const Vec3d position = transformer.transform( + positionHandle->get(*iter) + iter.getCoord().asVec3d()); + targetHandle->set(*iter, newSampleWrapper.sample(position)); + } + }; + + LeafManagerT leafManager(mPoints.tree()); + + if (mInterrupter) mInterrupter->start(); + + leafManager.foreach(sampleLambda, mThreaded); + + if (mInterrupter) mInterrupter->end(); + } + + template + inline void resolveTransform(const SourceGridT& sourceGrid, const SamplerWrapperT& sampleWrapper, + const Index targetIndex) + { + const auto& sourceTransform = sourceGrid.constTransform(); + const auto& pointsTransform = mPoints.constTransform(); + + if (sourceTransform == pointsTransform) { + AlignedTransform transformer; + doSample(sampleWrapper, targetIndex, transformer); + } else { + NonAlignedTransform transformer(sourceTransform, pointsTransform); + doSample(sampleWrapper, targetIndex, transformer); + } + } + + template + inline void resolveStaggered(const SourceGridT& sourceGrid, const Index targetIndex) + { + using SamplerWrapperT = SamplerWrapper>; + using StaggeredSamplerWrapperT = SamplerWrapper>; + + using SourceValueType = typename SourceGridT::ValueType; + if (VecTraits::Size == 3 && sourceGrid.getGridClass() == GRID_STAGGERED) { + StaggeredSamplerWrapperT sampleWrapper(sourceGrid, mSampler); + resolveTransform(sourceGrid, sampleWrapper, targetIndex); + } else { + SamplerWrapperT sampleWrapper(sourceGrid, mSampler); + resolveTransform(sourceGrid, sampleWrapper, targetIndex); + } + } + +public: + template + inline void sample(const SourceGridT& sourceGrid, Index targetIndex) + { + if (mOrder == 0) { + resolveStaggered(sourceGrid, targetIndex); + } else if (mOrder == 1) { + resolveStaggered(sourceGrid, targetIndex); + } else if (mOrder == 2) { + resolveStaggered(sourceGrid, targetIndex); + } + } + +private: + size_t mOrder; + PointDataGridT& mPoints; + const SamplerT& mSampler; + const FilterT& mFilter; + InterrupterT* const mInterrupter; + const bool mThreaded; +}; // class PointDataSampler + + +template +struct AppendAttributeOp +{ + static void append(PointDataGridT& points, const Name& attribute) + { + appendAttribute(points.tree(), attribute); + } +}; +// partial specialization to disable attempts to append attribute type of DummySampleType +template +struct AppendAttributeOp +{ + static void append(PointDataGridT&, const Name&) { } +}; + +} // namespace point_sample_internal + + +//////////////////////////////////////// + + +template +ValueT SampleWithRounding::sample(const AccessorT& accessor, const Vec3d& position) const +{ + using namespace point_sample_internal; + using SourceValueT = typename AccessorT::ValueType; + static const bool staggered = SamplerTraits::Staggered; + static const bool compatible = CompatibleTypes::value && + (!staggered || (staggered && VecTraits::Size == 3)); + static const bool round = std::is_floating_point::value && + std::is_integral::value; + ValueT value; + SampleWithRoundingOp::sample( + value, accessor, position); + return value; +} + + +//////////////////////////////////////// + + +template +inline void sampleGrid( size_t order, + PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute, + const FilterT& filter, + const SamplerT& sampler, + InterrupterT* const interrupter, + const bool threaded) +{ + using point_sample_internal::AppendAttributeOp; + using point_sample_internal::PointDataSampler; + + // use the name of the grid if no target attribute name supplied + Name attribute(targetAttribute); + if (targetAttribute.empty()) { + attribute = sourceGrid.getName(); + } + + // we do not allow sampling onto the "P" attribute + if (attribute == "P") { + OPENVDB_THROW(RuntimeError, "Cannot sample onto the \"P\" attribute"); + } + + auto leaf = points.tree().cbeginLeaf(); + if (!leaf) return; + + PointDataSampler pointDataSampler( + order, points, sampler, filter, interrupter, threaded); + + const auto& descriptor = leaf->attributeSet().descriptor(); + size_t targetIndex = descriptor.find(attribute); + const bool attributeExists = targetIndex != AttributeSet::INVALID_POS; + + if (std::is_same::value) { + if (!attributeExists) { + // append attribute of source grid value type + appendAttribute(points.tree(), attribute); + targetIndex = leaf->attributeSet().descriptor().find(attribute); + assert(targetIndex != AttributeSet::INVALID_POS); + + // sample using same type as source grid + pointDataSampler.template sample(sourceGrid, Index(targetIndex)); + } else { + auto targetIdx = static_cast(targetIndex); + // attempt to explicitly sample using type of existing attribute + const Name& targetType = descriptor.valueType(targetIndex); + if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else if (targetType == typeNameAsString()) { + pointDataSampler.template sample(sourceGrid, targetIdx); + } else { + std::ostringstream ostr; + ostr << "Cannot sample attribute of type - " << targetType; + OPENVDB_THROW(TypeError, ostr.str()); + } + } + } else { + if (!attributeExists) { + // append attribute of target value type + // (point_sample_internal wrapper disables the ability to use DummySampleType) + AppendAttributeOp::append(points, attribute); + targetIndex = leaf->attributeSet().descriptor().find(attribute); + assert(targetIndex != AttributeSet::INVALID_POS); + } + else { + const Name targetType = typeNameAsString(); + const Name attributeType = descriptor.valueType(targetIndex); + if (targetType != attributeType) { + std::ostringstream ostr; + ostr << "Requested attribute type " << targetType << " for sampling " + << " does not match existing attribute type " << attributeType; + OPENVDB_THROW(TypeError, ostr.str()); + } + } + + // sample using target value type + pointDataSampler.template sample( + sourceGrid, static_cast(targetIndex)); + } +} + +template +inline void pointSample(PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute, + const FilterT& filter, + InterrupterT* const interrupter) +{ + SampleWithRounding sampler; + sampleGrid(/*order=*/0, points, sourceGrid, targetAttribute, filter, sampler, interrupter); +} + +template +inline void boxSample( PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute, + const FilterT& filter, + InterrupterT* const interrupter) +{ + SampleWithRounding sampler; + sampleGrid(/*order=*/1, points, sourceGrid, targetAttribute, filter, sampler, interrupter); +} + +template +inline void quadraticSample(PointDataGridT& points, + const SourceGridT& sourceGrid, + const Name& targetAttribute, + const FilterT& filter, + InterrupterT* const interrupter) +{ + SampleWithRounding sampler; + sampleGrid(/*order=*/2, points, sourceGrid, targetAttribute, filter, sampler, interrupter); +} + + +//////////////////////////////////////// + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_POINTS_POINT_SAMPLE_HAS_BEEN_INCLUDED diff --git a/openvdb/points/PointScatter.h b/openvdb/points/PointScatter.h new file mode 100644 index 00000000..339c9c2d --- /dev/null +++ b/openvdb/points/PointScatter.h @@ -0,0 +1,554 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Nick Avramoussis +/// +/// @file points/PointScatter.h +/// +/// @brief Various point scattering methods for generating VDB Points. +/// +/// All random number calls are made to the same generator to produce +/// temporarily consistent results in relation to the provided seed. This +/// comes with some multi-threaded performance trade-offs. + +#ifndef OPENVDB_POINTS_POINT_SCATTER_HAS_BEEN_INCLUDED +#define OPENVDB_POINTS_POINT_SCATTER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "AttributeArray.h" +#include "PointCount.h" +#include "PointDataGrid.h" + +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +/// @brief The free functions depend on the following class: +/// +/// The @c InterrupterT template argument below refers to any class +/// with the following interface: +/// @code +/// class Interrupter { +/// ... +/// public: +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent=-1) // return true to break computation +///}; +/// @endcode +/// +/// @note If no template argument is provided for this InterrupterT +/// the util::NullInterrupter is used which implies that all +/// interrupter calls are no-ops (i.e. incurs no computational overhead). + + +/// @brief Uniformly scatter a total amount of points in active regions +/// +/// @param grid A source grid. The resulting PointDataGrid will copy this grids +/// transform and scatter in its active voxelized topology. +/// @param count The total number of points to scatter +/// @param seed A seed for the RandGenT +/// @param spread The spread of points as a scale from each voxels center. A value of +/// 1.0f indicates points can be placed anywhere within the voxel, where +/// as a value of 0.0f will force all points to be created exactly at the +/// centers of each voxel. +/// @param interrupter An optional interrupter +/// @note returns the scattered PointDataGrid +template< + typename GridT, + typename RandGenT = std::mt19937, + typename PositionArrayT = TypedAttributeArray, + typename PointDataGridT = Grid< + typename points::TreeConverter::Type>, + typename InterrupterT = util::NullInterrupter> +inline typename PointDataGridT::Ptr +uniformPointScatter(const GridT& grid, + const Index64 count, + const unsigned int seed = 0, + const float spread = 1.0f, + InterrupterT* interrupter = nullptr); + +/// @brief Uniformly scatter a fixed number of points per active voxel. If the pointsPerVoxel +/// value provided is a fractional value, each voxel calculates a delta value of +/// how likely it is to contain an extra point. +/// +/// @param grid A source grid. The resulting PointDataGrid will copy this grids +/// transform and scatter in its active voxelized topology. +/// @param pointsPerVoxel The number of points to scatter per voxel +/// @param seed A seed for the RandGenT +/// @param spread The spread of points as a scale from each voxels center. A value of +/// 1.0f indicates points can be placed anywhere within the voxel, where +/// as a value of 0.0f will force all points to be created exactly at the +/// centers of each voxel. +/// @param interrupter An optional interrupter +/// @note returns the scattered PointDataGrid + +template< + typename GridT, + typename RandGenT = std::mt19937, + typename PositionArrayT = TypedAttributeArray, + typename PointDataGridT = Grid< + typename points::TreeConverter::Type>, + typename InterrupterT = util::NullInterrupter> +inline typename PointDataGridT::Ptr +denseUniformPointScatter(const GridT& grid, + const float pointsPerVoxel, + const unsigned int seed = 0, + const float spread = 1.0f, + InterrupterT* interrupter = nullptr); + +/// @brief Non uniformly scatter points per active voxel. The pointsPerVoxel value is used +/// to weight each grids cell value to compute a fixed number of points for every +/// active voxel. If the computed result is a fractional value, each voxel calculates +/// a delta value of how likely it is to contain an extra point. +/// +/// @param grid A source grid. The resulting PointDataGrid will copy this grids +/// transform, voxelized topology and use its values to compute a +/// target points per voxel. The grids ValueType must be convertible +/// to a scalar value. Only active and larger than zero values will +/// contain points. +/// @param pointsPerVoxel The number of points to scatter per voxel +/// @param seed A seed for the RandGenT +/// @param spread The spread of points as a scale from each voxels center. A value of +/// 1.0f indicates points can be placed anywhere within the voxel, where +/// as a value of 0.0f will force all points to be created exactly at the +/// centers of each voxel. +/// @param interrupter An optional interrupter +/// @note returns the scattered PointDataGrid +template< + typename GridT, + typename RandGenT = std::mt19937, + typename PositionArrayT = TypedAttributeArray, + typename PointDataGridT = Grid< + typename points::TreeConverter::Type>, + typename InterrupterT = util::NullInterrupter> +inline typename PointDataGridT::Ptr +nonUniformPointScatter(const GridT& grid, + const float pointsPerVoxel, + const unsigned int seed = 0, + const float spread = 1.0f, + InterrupterT* interrupter = nullptr); + + +//////////////////////////////////////// + + +namespace point_scatter_internal +{ + +/// @brief initialise the topology of a PointDataGrid and ensure +/// everything is voxelized +/// @param grid The source grid from which to base the topology generation +template +inline typename PointDataGridT::Ptr +initialisePointTopology(const GridT& grid) +{ + typename PointDataGridT::Ptr points(new PointDataGridT); + points->setTransform(grid.transform().copy()); + points->topologyUnion(grid); + if (points->tree().hasActiveTiles()) { + points->tree().voxelizeActiveTiles(); + } + + return points; +} + +/// @brief Generate random point positions for a leaf node +/// @param leaf The leaf node to initialize +/// @param descriptor The descriptor containing the position type +/// @param count The number of points to generate +/// @param spread The spread of points from the voxel center +/// @param rand01 The random number generator, expected to produce floating point +/// values between 0 and 1. +template +inline void +generatePositions(LeafNodeT& leaf, + const AttributeSet::Descriptor::Ptr& descriptor, + const Index64& count, + const float spread, + RandGenT& rand01) +{ + using PositionTraits = VecTraits; + using ValueType = typename PositionTraits::ElementType; + using PositionWriteHandle = AttributeWriteHandle; + + leaf.initializeAttributes(descriptor, static_cast(count)); + + // directly expand to avoid needlessly setting uniform values in the + // write handle + auto& array = leaf.attributeArray(0); + array.expand(/*fill*/false); + + PositionWriteHandle pHandle(array, /*expand*/false); + PositionType P; + for (Index64 index = 0; index < count; ++index) { + P[0] = (spread * (rand01() - ValueType(0.5))); + P[1] = (spread * (rand01() - ValueType(0.5))); + P[2] = (spread * (rand01() - ValueType(0.5))); + pHandle.set(static_cast(index), P); + } +} + +} // namespace point_scatter_internal + + +//////////////////////////////////////// + + +template< + typename GridT, + typename RandGenT, + typename PositionArrayT, + typename PointDataGridT, + typename InterrupterT> +inline typename PointDataGridT::Ptr +uniformPointScatter(const GridT& grid, + const Index64 count, + const unsigned int seed, + const float spread, + InterrupterT* interrupter) +{ + using PositionType = typename PositionArrayT::ValueType; + using PositionTraits = VecTraits; + using ValueType = typename PositionTraits::ElementType; + using CodecType = typename PositionArrayT::Codec; + + using RandomGenerator = math::Rand01; + + using TreeType = typename PointDataGridT::TreeType; + using LeafNodeType = typename TreeType::LeafNodeType; + using LeafManagerT = tree::LeafManager; + + struct Local + { + /// @brief Get the prefixed voxel counts for each leaf node with an + /// additional value to represent the end voxel count. + /// See also LeafManager::getPrefixSum() + static void getPrefixSum(LeafManagerT& leafManager, + std::vector& offsets) + { + Index64 offset = 0; + offsets.reserve(leafManager.leafCount() + 1); + offsets.push_back(0); + const auto leafRange = leafManager.leafRange(); + for (auto leaf = leafRange.begin(); leaf; ++leaf) { + offset += leaf->onVoxelCount(); + offsets.push_back(offset); + } + } + }; + + static_assert(PositionTraits::IsVec && PositionTraits::Size == 3, + "Invalid Position Array type."); + + if (spread < 0.0f || spread > 1.0f) { + OPENVDB_THROW(ValueError, "Spread must be between 0 and 1."); + } + + if (interrupter) interrupter->start("Uniform scattering with fixed point count"); + + typename PointDataGridT::Ptr points = + point_scatter_internal::initialisePointTopology(grid); + TreeType& tree = points->tree(); + if (!tree.cbeginLeaf()) return points; + + LeafManagerT leafManager(tree); + const Index64 voxelCount = leafManager.activeLeafVoxelCount(); + assert(voxelCount != 0); + + const double pointsPerVolume = double(count) / double(voxelCount); + const Index32 pointsPerVoxel = static_cast(math::RoundDown(pointsPerVolume)); + const Index64 remainder = count - (pointsPerVoxel * voxelCount); + + if (remainder == 0) { + return denseUniformPointScatter< + GridT, RandGenT, PositionArrayT, PointDataGridT, InterrupterT>( + grid, float(pointsPerVoxel), seed, spread, interrupter); + } + + std::vector voxelOffsets, values; + std::thread worker(&Local::getPrefixSum, std::ref(leafManager), std::ref(voxelOffsets)); + + { + math::RandInt gen(seed, 0, voxelCount-1); + values.reserve(remainder); + for (Index64 i = 0; i < remainder; ++i) values.emplace_back(gen()); + } + + worker.join(); + + if (util::wasInterrupted(interrupter)) { + tree.clear(); + return points; + } + + tbb::parallel_sort(values.begin(), values.end()); + const bool fractionalOnly(pointsPerVoxel == 0); + + leafManager.foreach([&voxelOffsets, &values, fractionalOnly] + (LeafNodeType& leaf, const size_t idx) + { + const Index64 lowerOffset = voxelOffsets[idx]; // inclusive + const Index64 upperOffset = voxelOffsets[idx + 1]; // exclusive + assert(upperOffset > lowerOffset); + + const auto valuesEnd = values.end(); + auto lower = std::lower_bound(values.begin(), valuesEnd, lowerOffset); + + auto* const data = leaf.buffer().data(); + auto iter = leaf.beginValueOn(); + + Index32 currentOffset(0); + bool addedPoints(!fractionalOnly); + while (lower != valuesEnd) { + const Index64 vId = *lower; + if (vId >= upperOffset) break; + + const Index32 nextOffset = Index32(vId - lowerOffset); + iter.increment(nextOffset - currentOffset); + currentOffset = nextOffset; + assert(iter); + + auto& value = data[iter.pos()]; + value = value + 1; // no += operator support + addedPoints = true; + ++lower; + } + + // deactivate this leaf if no points were added. This will speed up + // the unthreaded rng + if (!addedPoints) leaf.setValuesOff(); + }); + + voxelOffsets.clear(); + values.clear(); + + if (fractionalOnly) { + tools::pruneInactive(tree); + leafManager.rebuild(); + } + + const AttributeSet::Descriptor::Ptr descriptor = + AttributeSet::Descriptor::create(PositionArrayT::attributeType()); + RandomGenerator rand01(seed); + + const auto leafRange = leafManager.leafRange(); + auto leaf = leafRange.begin(); + for (; leaf; ++leaf) { + if (util::wasInterrupted(interrupter)) break; + Index32 offset(0); + for (auto iter = leaf->beginValueAll(); iter; ++iter) { + if (iter.isValueOn()) { + const Index32 value = Index32(pointsPerVolume + Index32(*iter)); + if (value == 0) leaf->setValueOff(iter.pos()); + else offset += value; + } + // @note can't use iter.setValue(offset) on point grids + leaf->setOffsetOnly(iter.pos(), offset); + } + + // offset should always be non zero + assert(offset != 0); + point_scatter_internal::generatePositions + (*leaf, descriptor, offset, spread, rand01); + } + + // if interrupted, remove remaining leaf nodes + if (leaf) { + for (; leaf; ++leaf) leaf->setValuesOff(); + tools::pruneInactive(tree); + } + + if (interrupter) interrupter->end(); + return points; +} + + +//////////////////////////////////////// + + +template< + typename GridT, + typename RandGenT, + typename PositionArrayT, + typename PointDataGridT, + typename InterrupterT> +inline typename PointDataGridT::Ptr +denseUniformPointScatter(const GridT& grid, + const float pointsPerVoxel, + const unsigned int seed, + const float spread, + InterrupterT* interrupter) +{ + using PositionType = typename PositionArrayT::ValueType; + using PositionTraits = VecTraits; + using ValueType = typename PositionTraits::ElementType; + using CodecType = typename PositionArrayT::Codec; + + using RandomGenerator = math::Rand01; + + using TreeType = typename PointDataGridT::TreeType; + + static_assert(PositionTraits::IsVec && PositionTraits::Size == 3, + "Invalid Position Array type."); + + if (pointsPerVoxel < 0.0f) { + OPENVDB_THROW(ValueError, "Points per voxel must not be less than zero."); + } + + if (spread < 0.0f || spread > 1.0f) { + OPENVDB_THROW(ValueError, "Spread must be between 0 and 1."); + } + + if (interrupter) interrupter->start("Dense uniform scattering with fixed point count"); + + typename PointDataGridT::Ptr points = + point_scatter_internal::initialisePointTopology(grid); + TreeType& tree = points->tree(); + auto leafIter = tree.beginLeaf(); + if (!leafIter) return points; + + const Index32 pointsPerVoxelInt = math::Floor(pointsPerVoxel); + const double delta = pointsPerVoxel - float(pointsPerVoxelInt); + const bool fractional = !math::isApproxZero(delta, 1.0e-6); + const bool fractionalOnly = pointsPerVoxelInt == 0; + + const AttributeSet::Descriptor::Ptr descriptor = + AttributeSet::Descriptor::create(PositionArrayT::attributeType()); + RandomGenerator rand01(seed); + + for (; leafIter; ++leafIter) { + if (util::wasInterrupted(interrupter)) break; + Index32 offset(0); + for (auto iter = leafIter->beginValueAll(); iter; ++iter) { + if (iter.isValueOn()) { + offset += pointsPerVoxelInt; + if (fractional && rand01() < delta) ++offset; + else if (fractionalOnly) leafIter->setValueOff(iter.pos()); + } + // @note can't use iter.setValue(offset) on point grids + leafIter->setOffsetOnly(iter.pos(), offset); + } + + if (offset != 0) { + point_scatter_internal::generatePositions + (*leafIter, descriptor, offset, spread, rand01); + } + } + + // if interrupted, remove remaining leaf nodes + const bool prune(leafIter || fractionalOnly); + for (; leafIter; ++leafIter) leafIter->setValuesOff(); + + if (prune) tools::pruneInactive(tree); + if (interrupter) interrupter->end(); + return points; +} + + +//////////////////////////////////////// + + +template< + typename GridT, + typename RandGenT, + typename PositionArrayT, + typename PointDataGridT, + typename InterrupterT> +inline typename PointDataGridT::Ptr +nonUniformPointScatter(const GridT& grid, + const float pointsPerVoxel, + const unsigned int seed, + const float spread, + InterrupterT* interrupter) +{ + using PositionType = typename PositionArrayT::ValueType; + using PositionTraits = VecTraits; + using ValueType = typename PositionTraits::ElementType; + using CodecType = typename PositionArrayT::Codec; + + using RandomGenerator = math::Rand01; + + using TreeType = typename PointDataGridT::TreeType; + + static_assert(PositionTraits::IsVec && PositionTraits::Size == 3, + "Invalid Position Array type."); + static_assert(std::is_arithmetic::value, + "Scalar grid type required for weighted voxel scattering."); + + if (pointsPerVoxel < 0.0f) { + OPENVDB_THROW(ValueError, "Points per voxel must not be less than zero."); + } + + if (spread < 0.0f || spread > 1.0f) { + OPENVDB_THROW(ValueError, "Spread must be between 0 and 1."); + } + + if (interrupter) interrupter->start("Non-uniform scattering with local point density"); + + typename PointDataGridT::Ptr points = + point_scatter_internal::initialisePointTopology(grid); + TreeType& tree = points->tree(); + auto leafIter = tree.beginLeaf(); + if (!leafIter) return points; + + const AttributeSet::Descriptor::Ptr descriptor = + AttributeSet::Descriptor::create(PositionArrayT::attributeType()); + RandomGenerator rand01(seed); + const auto accessor = grid.getConstAccessor(); + + for (; leafIter; ++leafIter) { + if (util::wasInterrupted(interrupter)) break; + Index32 offset(0); + for (auto iter = leafIter->beginValueAll(); iter; ++iter) { + if (iter.isValueOn()) { + double fractional = + double(accessor.getValue(iter.getCoord())) * pointsPerVoxel; + fractional = std::max(0.0, fractional); + int count = int(fractional); + if (rand01() < (fractional - double(count))) ++count; + else if (count == 0) leafIter->setValueOff(iter.pos()); + offset += count; + } + // @note can't use iter.setValue(offset) on point grids + leafIter->setOffsetOnly(iter.pos(), offset); + } + + if (offset != 0) { + point_scatter_internal::generatePositions + (*leafIter, descriptor, offset, spread, rand01); + } + } + + // if interrupted, remove remaining leaf nodes + for (; leafIter; ++leafIter) leafIter->setValuesOff(); + + tools::pruneInactive(points->tree()); + if (interrupter) interrupter->end(); + return points; +} + + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#endif // OPENVDB_POINTS_POINT_SCATTER_HAS_BEEN_INCLUDED diff --git a/openvdb/points/StreamCompression.cc b/openvdb/points/StreamCompression.cc new file mode 100644 index 00000000..a49bfbd3 --- /dev/null +++ b/openvdb/points/StreamCompression.cc @@ -0,0 +1,633 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/StreamCompression.cc + +#include "StreamCompression.h" +#include +#include +#ifdef OPENVDB_USE_BLOSC +#include +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace compression { + + +#ifdef OPENVDB_USE_BLOSC + + +bool +bloscCanCompress() +{ + return true; +} + + +size_t +bloscUncompressedSize(const char* buffer) +{ + size_t bytes, _1, _2; + blosc_cbuffer_sizes(buffer, &bytes, &_1, &_2); + return bytes; +} + + +void +bloscCompress(char* compressedBuffer, size_t& compressedBytes, const size_t bufferBytes, + const char* uncompressedBuffer, const size_t uncompressedBytes) +{ + if (bufferBytes > BLOSC_MAX_BUFFERSIZE) { + OPENVDB_LOG_DEBUG("Blosc compress failed due to exceeding maximum buffer size."); + compressedBytes = 0; + compressedBuffer = nullptr; + return; + } + if (bufferBytes < uncompressedBytes + BLOSC_MAX_OVERHEAD) { + OPENVDB_LOG_DEBUG("Blosc compress failed due to insufficient space in compressed buffer."); + compressedBytes = 0; + compressedBuffer = nullptr; + return; + } + + if (uncompressedBytes <= BLOSC_MINIMUM_BYTES) { + // no Blosc compression performed below this limit + compressedBytes = 0; + compressedBuffer = nullptr; + return; + } + + if (uncompressedBytes < BLOSC_PAD_BYTES && bufferBytes < BLOSC_PAD_BYTES + BLOSC_MAX_OVERHEAD) { + OPENVDB_LOG_DEBUG( + "Blosc compress failed due to insufficient space in compressed buffer for padding."); + compressedBytes = 0; + compressedBuffer = nullptr; + return; + } + + size_t inputBytes = uncompressedBytes; + + const char* buffer = uncompressedBuffer; + + std::unique_ptr paddedBuffer; + if (uncompressedBytes < BLOSC_PAD_BYTES) { + // input array padded with zeros below this limit to improve compression + paddedBuffer.reset(new char[BLOSC_PAD_BYTES]); + std::memcpy(paddedBuffer.get(), buffer, uncompressedBytes); + for (int i = static_cast(uncompressedBytes); i < BLOSC_PAD_BYTES; i++) { + paddedBuffer.get()[i] = 0; + } + buffer = paddedBuffer.get(); + inputBytes = BLOSC_PAD_BYTES; + } + + int _compressedBytes = blosc_compress_ctx( + /*clevel=*/9, // 0 (no compression) to 9 (maximum compression) + /*doshuffle=*/true, + /*typesize=*/sizeof(float), // hard-coded to 4-bytes for better compression + /*srcsize=*/inputBytes, + /*src=*/buffer, + /*dest=*/compressedBuffer, + /*destsize=*/bufferBytes, + BLOSC_LZ4_COMPNAME, + /*blocksize=*/inputBytes, + /*numthreads=*/1); + + if (_compressedBytes <= 0) { + std::ostringstream ostr; + ostr << "Blosc failed to compress " << uncompressedBytes << " byte" + << (uncompressedBytes == 1 ? "" : "s"); + if (_compressedBytes < 0) ostr << " (internal error " << _compressedBytes << ")"; + OPENVDB_LOG_DEBUG(ostr.str()); + compressedBytes = 0; + return; + } + + compressedBytes = _compressedBytes; + + // fail if compression does not result in a smaller buffer + if (compressedBytes >= uncompressedBytes) { + compressedBytes = 0; + } +} + + +std::unique_ptr +bloscCompress(const char* buffer, const size_t uncompressedBytes, size_t& compressedBytes, + const bool resize) +{ + size_t tempBytes = uncompressedBytes; + // increase temporary buffer for padding if necessary + if (tempBytes >= BLOSC_MINIMUM_BYTES && tempBytes < BLOSC_PAD_BYTES) { + tempBytes += BLOSC_PAD_BYTES; + } + // increase by Blosc max overhead + tempBytes += BLOSC_MAX_OVERHEAD; + const bool outOfRange = tempBytes > BLOSC_MAX_BUFFERSIZE; + std::unique_ptr outBuffer(outOfRange ? new char[1] : new char[tempBytes]); + + bloscCompress(outBuffer.get(), compressedBytes, tempBytes, buffer, uncompressedBytes); + + if (compressedBytes == 0) { + return nullptr; + } + + // buffer size is larger due to Blosc overhead so resize + // (resize can be skipped if the buffer is only temporary) + + if (resize) { + std::unique_ptr newBuffer(new char[compressedBytes]); + std::memcpy(newBuffer.get(), outBuffer.get(), compressedBytes); + outBuffer.reset(newBuffer.release()); + } + + return outBuffer; +} + + +size_t +bloscCompressedSize( const char* buffer, const size_t uncompressedBytes) +{ + size_t compressedBytes; + bloscCompress(buffer, uncompressedBytes, compressedBytes, /*resize=*/false); + return compressedBytes; +} + + +void +bloscDecompress(char* uncompressedBuffer, const size_t expectedBytes, + const size_t bufferBytes, const char* compressedBuffer) +{ + size_t uncompressedBytes = bloscUncompressedSize(compressedBuffer); + + if (bufferBytes > BLOSC_MAX_BUFFERSIZE) { + OPENVDB_THROW(RuntimeError, + "Blosc decompress failed due to exceeding maximum buffer size."); + } + if (bufferBytes < uncompressedBytes + BLOSC_MAX_OVERHEAD) { + OPENVDB_THROW(RuntimeError, + "Blosc decompress failed due to insufficient space in uncompressed buffer."); + } + + uncompressedBytes = blosc_decompress_ctx( /*src=*/compressedBuffer, + /*dest=*/uncompressedBuffer, + bufferBytes, + /*numthreads=*/1); + + if (uncompressedBytes < 1) { + OPENVDB_THROW(RuntimeError, "Blosc decompress returned error code " << uncompressedBytes); + } + + if (uncompressedBytes == BLOSC_PAD_BYTES && expectedBytes <= BLOSC_PAD_BYTES) { + // padded array to improve compression + } + else if (uncompressedBytes != expectedBytes) { + OPENVDB_THROW(RuntimeError, "Expected to decompress " << expectedBytes + << " byte" << (expectedBytes == 1 ? "" : "s") << ", got " + << uncompressedBytes << " byte" << (uncompressedBytes == 1 ? "" : "s")); + } +} + + +std::unique_ptr +bloscDecompress(const char* buffer, const size_t expectedBytes, const bool resize) +{ + size_t uncompressedBytes = bloscUncompressedSize(buffer); + size_t tempBytes = uncompressedBytes + BLOSC_MAX_OVERHEAD; + const bool outOfRange = tempBytes > BLOSC_MAX_BUFFERSIZE; + if (outOfRange) tempBytes = 1; + std::unique_ptr outBuffer(new char[tempBytes]); + + bloscDecompress(outBuffer.get(), expectedBytes, tempBytes, buffer); + + // buffer size is larger due to Blosc overhead so resize + // (resize can be skipped if the buffer is only temporary) + + if (resize) { + std::unique_ptr newBuffer(new char[expectedBytes]); + std::memcpy(newBuffer.get(), outBuffer.get(), expectedBytes); + outBuffer.reset(newBuffer.release()); + } + + return outBuffer; +} + + +#else + + +bool +bloscCanCompress() +{ + OPENVDB_LOG_DEBUG("Can't compress array data without the blosc library."); + return false; +} + + +size_t +bloscUncompressedSize(const char*) +{ + OPENVDB_THROW(RuntimeError, "Can't extract compressed data without the blosc library."); +} + + +void +bloscCompress(char*, size_t& compressedBytes, const size_t, const char*, const size_t) +{ + OPENVDB_LOG_DEBUG("Can't compress array data without the blosc library."); + compressedBytes = 0; +} + + +std::unique_ptr +bloscCompress(const char*, const size_t, size_t& compressedBytes, const bool) +{ + OPENVDB_LOG_DEBUG("Can't compress array data without the blosc library."); + compressedBytes = 0; + return nullptr; +} + + +size_t +bloscCompressedSize(const char*, const size_t) +{ + OPENVDB_LOG_DEBUG("Can't compress array data without the blosc library."); + return 0; +} + + +void +bloscDecompress(char*, const size_t, const size_t, const char*) +{ + OPENVDB_THROW(RuntimeError, "Can't extract compressed data without the blosc library."); +} + + +std::unique_ptr +bloscDecompress(const char*, const size_t, const bool) +{ + OPENVDB_THROW(RuntimeError, "Can't extract compressed data without the blosc library."); +} + + +#endif // OPENVDB_USE_BLOSC + + +//////////////////////////////////////// + + +void +Page::load() const +{ + this->doLoad(); +} + + +long +Page::uncompressedBytes() const +{ + assert(mInfo); + return mInfo->uncompressedBytes; +} + + +const char* +Page::buffer(const int index) const +{ + if (this->isOutOfCore()) this->load(); + + return mData.get() + index; +} + + +void +Page::readHeader(std::istream& is) +{ + assert(mInfo); + + // read the (compressed) size of the page + int compressedSize; + is.read(reinterpret_cast(&compressedSize), sizeof(int)); + + int uncompressedSize; + // if uncompressed, read the (compressed) size of the page + if (compressedSize > 0) is.read(reinterpret_cast(&uncompressedSize), sizeof(int)); + else uncompressedSize = -compressedSize; + + assert(compressedSize != 0); + assert(uncompressedSize != 0); + + mInfo->compressedBytes = compressedSize; + mInfo->uncompressedBytes = uncompressedSize; +} + + +void +Page::readBuffers(std::istream&is, bool delayed) +{ + assert(mInfo); + + bool isCompressed = mInfo->compressedBytes > 0; + + io::MappedFile::Ptr mappedFile = io::getMappedFilePtr(is); + + if (delayed && mappedFile) { + SharedPtr meta = io::getStreamMetadataPtr(is); + assert(meta); + + std::streamoff filepos = is.tellg(); + + // seek over the page + is.seekg((isCompressed ? mInfo->compressedBytes : -mInfo->compressedBytes), + std::ios_base::cur); + + mInfo->mappedFile = mappedFile; + mInfo->meta = meta; + mInfo->filepos = filepos; + + assert(mInfo->mappedFile); + } + else { + std::unique_ptr buffer(new char[ + (isCompressed ? mInfo->compressedBytes : -mInfo->compressedBytes)]); + is.read(buffer.get(), (isCompressed ? mInfo->compressedBytes : -mInfo->compressedBytes)); + + if (mInfo->compressedBytes > 0) { + this->decompress(buffer); + } else { + this->copy(buffer, -static_cast(mInfo->compressedBytes)); + } + mInfo.reset(); + } +} + + +bool +Page::isOutOfCore() const +{ + return bool(mInfo); +} + + +void +Page::copy(const std::unique_ptr& temp, int pageSize) +{ + mData.reset(new char[pageSize]); + std::memcpy(mData.get(), temp.get(), pageSize); +} + + +void +Page::decompress(const std::unique_ptr& temp) +{ + size_t uncompressedBytes = bloscUncompressedSize(temp.get()); + size_t tempBytes = uncompressedBytes; +#ifdef OPENVDB_USE_BLOSC + tempBytes += uncompressedBytes; +#endif + mData.reset(new char[tempBytes]); + + bloscDecompress(mData.get(), uncompressedBytes, tempBytes, temp.get()); +} + + +void +Page::doLoad() const +{ + if (!this->isOutOfCore()) return; + + Page* self = const_cast(this); + + // This lock will be contended at most once, after which this buffer + // will no longer be out-of-core. + tbb::spin_mutex::scoped_lock lock(self->mMutex); + if (!this->isOutOfCore()) return; + + assert(self->mInfo); + + int compressedBytes = static_cast(self->mInfo->compressedBytes); + bool compressed = compressedBytes > 0; + if (!compressed) compressedBytes = -compressedBytes; + + assert(compressedBytes); + + std::unique_ptr temp(new char[compressedBytes]); + + assert(self->mInfo->mappedFile); + SharedPtr buf = self->mInfo->mappedFile->createBuffer(); + assert(buf); + + std::istream is(buf.get()); + io::setStreamMetadataPtr(is, self->mInfo->meta, /*transfer=*/true); + is.seekg(self->mInfo->filepos); + + is.read(temp.get(), compressedBytes); + + if (compressed) self->decompress(temp); + else self->copy(temp, compressedBytes); + + self->mInfo.reset(); +} + + +//////////////////////////////////////// + + +PageHandle::PageHandle( const Page::Ptr& page, const int index, const int size) + : mPage(page) + , mIndex(index) + , mSize(size) +{ +} + + +Page& +PageHandle::page() +{ + assert(mPage); + return *mPage; +} + + +std::unique_ptr +PageHandle::read() +{ + assert(mIndex >= 0); + assert(mSize > 0); + std::unique_ptr buffer(new char[mSize]); + std::memcpy(buffer.get(), mPage->buffer(mIndex), mSize); + return buffer; +} + + +//////////////////////////////////////// + + +PagedInputStream::PagedInputStream(std::istream& is) + : mIs(&is) +{ +} + + +PageHandle::Ptr +PagedInputStream::createHandle(std::streamsize n) +{ + assert(mByteIndex <= mUncompressedBytes); + + if (mByteIndex == mUncompressedBytes) { + + mPage = std::make_shared(); + mPage->readHeader(*mIs); + mUncompressedBytes = static_cast(mPage->uncompressedBytes()); + mByteIndex = 0; + } + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + // TODO: C++14 introduces std::make_unique + PageHandle::Ptr pageHandle(new PageHandle(mPage, mByteIndex, int(n))); +#else + PageHandle::Ptr pageHandle = std::make_shared(mPage, mByteIndex, int(n)); +#endif + + mByteIndex += int(n); + + return pageHandle; +} + + +void +PagedInputStream::read(PageHandle::Ptr& pageHandle, std::streamsize n, bool delayed) +{ + assert(mByteIndex <= mUncompressedBytes); + + Page& page = pageHandle->page(); + + if (mByteIndex == mUncompressedBytes) { + mUncompressedBytes = static_cast(page.uncompressedBytes()); + page.readBuffers(*mIs, delayed); + mByteIndex = 0; + } + + mByteIndex += int(n); +} + + +//////////////////////////////////////// + + +PagedOutputStream::PagedOutputStream() +{ +#ifdef OPENVDB_USE_BLOSC + mCompressedData.reset(new char[PageSize + BLOSC_MAX_OVERHEAD]); +#endif +} + + +PagedOutputStream::PagedOutputStream(std::ostream& os) + : mOs(&os) +{ +#ifdef OPENVDB_USE_BLOSC + mCompressedData.reset(new char[PageSize + BLOSC_MAX_OVERHEAD]); +#endif +} + + +PagedOutputStream& +PagedOutputStream::write(const char* str, std::streamsize n) +{ + if (n > PageSize) { + this->flush(); + // write out the block as if a whole page + this->compressAndWrite(str, size_t(n)); + } + else { + // if the size of this block will overflow the page, flush to disk + if ((int(n) + mBytes) > PageSize) { + this->flush(); + } + + // store and increment the data in the current page + std::memcpy(mData.get() + mBytes, str, n); + mBytes += int(n); + } + + return *this; +} + + +void +PagedOutputStream::flush() +{ + this->compressAndWrite(mData.get(), mBytes); + mBytes = 0; +} + + +void +PagedOutputStream::compressAndWrite(const char* buffer, size_t size) +{ + if (size == 0) return; + + assert(size < std::numeric_limits::max()); + + this->resize(size); + + size_t compressedBytes(0); + if (mSizeOnly) { +#ifdef OPENVDB_USE_BLOSC + compressedBytes = bloscCompressedSize(buffer, size); +#endif + } + else { +#ifdef OPENVDB_USE_BLOSC + bloscCompress(mCompressedData.get(), compressedBytes, mCapacity + BLOSC_MAX_OVERHEAD, buffer, size); +#endif + } + + if (compressedBytes == 0) { + int uncompressedBytes = -static_cast(size); + if (mSizeOnly) { + mOs->write(reinterpret_cast(&uncompressedBytes), sizeof(int)); + } + else { + mOs->write(buffer, size); + } + } + else { + if (mSizeOnly) { + mOs->write(reinterpret_cast(&compressedBytes), sizeof(int)); + mOs->write(reinterpret_cast(&size), sizeof(int)); + } + else { +#ifdef OPENVDB_USE_BLOSC + mOs->write(mCompressedData.get(), compressedBytes); +#else + OPENVDB_THROW(RuntimeError, "Cannot write out compressed data without Blosc."); +#endif + } + } +} + + +void +PagedOutputStream::resize(size_t size) +{ + // grow the capacity if not sufficient space + size_t requiredSize = size; + if (size < BLOSC_PAD_BYTES && size >= BLOSC_MINIMUM_BYTES) { + requiredSize = BLOSC_PAD_BYTES; + } + if (requiredSize > mCapacity) { + mCapacity = requiredSize; + mData.reset(new char[mCapacity]); +#ifdef OPENVDB_USE_BLOSC + mCompressedData.reset(new char[mCapacity + BLOSC_MAX_OVERHEAD]); +#endif + } +} + +} // namespace compression +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/points/StreamCompression.h b/openvdb/points/StreamCompression.h new file mode 100644 index 00000000..2dc5b46d --- /dev/null +++ b/openvdb/points/StreamCompression.h @@ -0,0 +1,289 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/StreamCompression.h +/// +/// @author Dan Bailey +/// +/// @brief Convenience wrappers to using Blosc and reading and writing of Paged data. +/// +/// Blosc is most effective with large (> ~256KB) blocks of data. Writing the entire +/// data block contiguously would provide the most optimal compression, however would +/// limit the ability to use delayed-loading as the whole block would be required to +/// be loaded from disk at once. To balance these two competing factors, Paging is used +/// to write out blocks of data that are a reasonable size for Blosc. These Pages are +/// loaded lazily, tracking the input stream pointers and creating Handles that reference +/// portions of the buffer. When the Page buffer is accessed, the data will be read from +/// the stream. + +#ifndef OPENVDB_TOOLS_STREAM_COMPRESSION_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_STREAM_COMPRESSION_HAS_BEEN_INCLUDED + +#include +#include +#include +#include + + +class TestStreamCompression; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace compression { + + +// This is the minimum number of bytes below which Blosc compression is not used to +// avoid unecessary computation, as Blosc offers minimal compression until this limit +static const int BLOSC_MINIMUM_BYTES = 48; + +// This is the minimum number of bytes below which the array is padded with zeros up +// to this number of bytes to allow Blosc to perform compression with small arrays +static const int BLOSC_PAD_BYTES = 128; + + +/// @brief Returns true if compression is available +OPENVDB_API bool bloscCanCompress(); + +/// @brief Retrieves the uncompressed size of buffer when uncompressed +/// +/// @param buffer the compressed buffer +OPENVDB_API size_t bloscUncompressedSize(const char* buffer); + +/// @brief Compress into the supplied buffer. +/// +/// @param compressedBuffer the buffer to compress +/// @param compressedBytes number of compressed bytes +/// @param bufferBytes the number of bytes in compressedBuffer available to be filled +/// @param uncompressedBuffer the uncompressed buffer to compress +/// @param uncompressedBytes number of uncompressed bytes +OPENVDB_API void bloscCompress(char* compressedBuffer, size_t& compressedBytes, + const size_t bufferBytes, const char* uncompressedBuffer, const size_t uncompressedBytes); + +/// @brief Compress and return the heap-allocated compressed buffer. +/// +/// @param buffer the buffer to compress +/// @param uncompressedBytes number of uncompressed bytes +/// @param compressedBytes number of compressed bytes (written to this variable) +/// @param resize the compressed buffer will be exactly resized to remove the +/// portion used for Blosc overhead, for efficiency this can be +/// skipped if it is known that the resulting buffer is temporary +OPENVDB_API std::unique_ptr bloscCompress(const char* buffer, + const size_t uncompressedBytes, size_t& compressedBytes, const bool resize = true); + +/// @brief Convenience wrapper to retrieve the compressed size of buffer when compressed +/// +/// @param buffer the uncompressed buffer +/// @param uncompressedBytes number of uncompressed bytes +OPENVDB_API size_t bloscCompressedSize(const char* buffer, const size_t uncompressedBytes); + +/// @brief Decompress into the supplied buffer. Will throw if decompression fails or +/// uncompressed buffer has insufficient space in which to decompress. +/// +/// @param uncompressedBuffer the uncompressed buffer to decompress into +/// @param expectedBytes the number of bytes expected once the buffer is decompressed +/// @param bufferBytes the number of bytes in uncompressedBuffer available to be filled +/// @param compressedBuffer the compressed buffer to decompress +OPENVDB_API void bloscDecompress(char* uncompressedBuffer, const size_t expectedBytes, + const size_t bufferBytes, const char* compressedBuffer); + +/// @brief Decompress and return the the heap-allocated uncompressed buffer. +/// +/// @param buffer the buffer to decompress +/// @param expectedBytes the number of bytes expected once the buffer is decompressed +/// @param resize the compressed buffer will be exactly resized to remove the +/// portion used for Blosc overhead, for efficiency this can be +/// skipped if it is known that the resulting buffer is temporary +OPENVDB_API std::unique_ptr bloscDecompress(const char* buffer, + const size_t expectedBytes, const bool resize = true); + + +//////////////////////////////////////// + + +// 1MB = 1048576 Bytes +static const int PageSize = 1024 * 1024; + + +/// @brief Stores a variable-size, compressed, delayed-load Page of data +/// that is loaded into memory when accessed. Access to the Page is +/// thread-safe as loading and decompressing the data is protected by a mutex. +class OPENVDB_API Page +{ +private: + struct Info + { + io::MappedFile::Ptr mappedFile; + SharedPtr meta; + std::streamoff filepos; + long compressedBytes; + long uncompressedBytes; + }; // Info + +public: + using Ptr = std::shared_ptr; + + Page() = default; + + /// @brief load the Page into memory + void load() const; + + /// @brief Uncompressed bytes of the Paged data, available + /// when the header has been read. + long uncompressedBytes() const; + + /// @brief Retrieves a data pointer at the specific @param index + /// @note Will force a Page load when called. + const char* buffer(const int index) const; + + /// @brief Read the Page header + void readHeader(std::istream&); + + /// @brief Read the Page buffers. If @a delayed is true, stream + /// pointers will be stored to load the data lazily. + void readBuffers(std::istream&, bool delayed); + + /// @brief Test if the data is out-of-core + bool isOutOfCore() const; + +private: + /// @brief Convenience method to store a copy of the supplied buffer + void copy(const std::unique_ptr& temp, int pageSize); + + /// @brief Decompress and store the supplied data + void decompress(const std::unique_ptr& temp); + + /// @brief Thread-safe loading of the data + void doLoad() const; + + std::unique_ptr mInfo = std::unique_ptr(new Info); + std::unique_ptr mData; + tbb::spin_mutex mMutex; +}; // class Page + + +/// @brief A PageHandle holds a unique ptr to a Page and a specific stream +/// pointer to a point within the decompressed Page buffer +class OPENVDB_API PageHandle +{ +public: +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + using Ptr = std::unique_ptr; +#else + using Ptr = std::shared_ptr; +#endif + + /// @brief Create the page handle + /// @param page a shared ptr to the page that stores the buffer + /// @param index start position of the buffer to be read + /// @param size total size of the buffer to be read in bytes + PageHandle(const Page::Ptr& page, const int index, const int size); + + /// @brief Retrieve a reference to the stored page + Page& page(); + + /// @brief Return the size of the buffer + int size() const { return mSize; } + + /// @brief Read and return the buffer, loading and decompressing + /// the Page if necessary. + std::unique_ptr read(); + + /// @brief Return a copy of this PageHandle + Ptr copy() { return Ptr(new PageHandle(mPage, mIndex, mSize)); } + +protected: + friend class ::TestStreamCompression; + +private: + Page::Ptr mPage; + int mIndex = -1; + int mSize = 0; +}; // class PageHandle + + +/// @brief A Paging wrapper to std::istream that is responsible for reading +/// from a given input stream and creating Page objects and PageHandles that +/// reference those pages for delayed reading. +class OPENVDB_API PagedInputStream +{ +public: + using Ptr = std::shared_ptr; + + PagedInputStream() = default; + + explicit PagedInputStream(std::istream& is); + + /// @brief Size-only mode tags the stream as only reading size data. + void setSizeOnly(bool sizeOnly) { mSizeOnly = sizeOnly; } + bool sizeOnly() const { return mSizeOnly; } + + // @brief Set and get the input stream + std::istream& getInputStream() { assert(mIs); return *mIs; } + void setInputStream(std::istream& is) { mIs = &is; } + + /// @brief Creates a PageHandle to access the next @param n bytes of the Page. + PageHandle::Ptr createHandle(std::streamsize n); + + /// @brief Takes a @a pageHandle and updates the referenced page with the + /// current stream pointer position and if @a delayed is false performs + /// an immediate read of the data. + void read(PageHandle::Ptr& pageHandle, std::streamsize n, bool delayed = true); + +private: + int mByteIndex = 0; + int mUncompressedBytes = 0; + std::istream* mIs = nullptr; + Page::Ptr mPage; + bool mSizeOnly = false; +}; // class PagedInputStream + + +/// @brief A Paging wrapper to std::ostream that is responsible for writing +/// from a given output stream at intervals set by the PageSize. As Pages are +/// variable in size, they are flushed to disk as soon as sufficiently large. +class OPENVDB_API PagedOutputStream +{ +public: + using Ptr = std::shared_ptr; + + PagedOutputStream(); + + explicit PagedOutputStream(std::ostream& os); + + /// @brief Size-only mode tags the stream as only writing size data. + void setSizeOnly(bool sizeOnly) { mSizeOnly = sizeOnly; } + bool sizeOnly() const { return mSizeOnly; } + + /// @brief Set and get the output stream + std::ostream& getOutputStream() { assert(mOs); return *mOs; } + void setOutputStream(std::ostream& os) { mOs = &os; } + + /// @brief Writes the given @param str buffer of size @param n + PagedOutputStream& write(const char* str, std::streamsize n); + + /// @brief Manually flushes the current page to disk if non-zero + void flush(); + +private: + /// @brief Compress the @param buffer of @param size bytes and write + /// out to the stream. + void compressAndWrite(const char* buffer, size_t size); + + /// @brief Resize the internal page buffer to @param size bytes + void resize(size_t size); + + std::unique_ptr mData = std::unique_ptr(new char[PageSize]); + std::unique_ptr mCompressedData = nullptr; + size_t mCapacity = PageSize; + int mBytes = 0; + std::ostream* mOs = nullptr; + bool mSizeOnly = false; +}; // class PagedOutputStream + + +} // namespace compression +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_STREAM_COMPRESSION_HAS_BEEN_INCLUDED diff --git a/openvdb/points/points.cc b/openvdb/points/points.cc new file mode 100644 index 00000000..31af8156 --- /dev/null +++ b/openvdb/points/points.cc @@ -0,0 +1,70 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file points/points.cc + +#include "PointDataGrid.h" + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +void +internal::initialize() +{ + // Register attribute arrays with no compression + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + + // Register attribute arrays with group and string attribute + GroupAttributeArray::registerType(); + StringAttributeArray::registerType(); + + // Register attribute arrays with matrix and quaternion attributes + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + TypedAttributeArray>::registerType(); + + // Register attribute arrays with truncate compression + TypedAttributeArray::registerType(); + TypedAttributeArray, TruncateCodec>::registerType(); + + // Register attribute arrays with fixed point compression + TypedAttributeArray, FixedPointCodec>::registerType(); + TypedAttributeArray, FixedPointCodec>::registerType(); + TypedAttributeArray, FixedPointCodec>::registerType(); + TypedAttributeArray, FixedPointCodec>::registerType(); + TypedAttributeArray, FixedPointCodec>::registerType(); + TypedAttributeArray, FixedPointCodec>::registerType(); + + // Register attribute arrays with unit vector compression + TypedAttributeArray, UnitVecCodec>::registerType(); + + // Register types associated with point data grids. + Metadata::registerType(typeNameAsString(), Int32Metadata::createMetadata); + Metadata::registerType(typeNameAsString(), Int64Metadata::createMetadata); + PointDataGrid::registerGrid(); +} + + +void +internal::uninitialize() +{ + AttributeArray::clearRegistry(); +} + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/python/CMakeLists.txt b/openvdb/python/CMakeLists.txt new file mode 100644 index 00000000..f2604320 --- /dev/null +++ b/openvdb/python/CMakeLists.txt @@ -0,0 +1,312 @@ +# Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 +# +#[=======================================================================[ + + CMake Configuration for OpenVDB Python bindings + +#]=======================================================================] + +cmake_minimum_required(VERSION 3.3) +project(OpenVDBPython) + +# Monitoring _ROOT variables +if(POLICY CMP0074) + cmake_policy(SET CMP0074 NEW) +endif() +include(GNUInstallDirs) + +###### OpenVDB Python Options + +option(USE_NUMPY [=[ +Build the python library with numpy support. Currently requires CMake 3.14.]=] OFF) +option(OPENVDB_PYTHON_WRAP_ALL_GRID_TYPES [=[ +Expose (almost) all of the grid types in the python module. Otherwise, only FloatGrid, BoolGrid and +Vec3SGrid will be exposed (see, e.g., exportIntGrid() in python/pyIntGrid.cc). Compiling the Python +module with this ON can be very memory-intensive.]=] OFF) + +######################################################################### + +message(STATUS "----------------------------------------------------") +message(STATUS "------------ Configuring OpenVDBPython -------------") +message(STATUS "----------------------------------------------------") + +########################################################################## + +# Collect and configure lib dependencies + +if(NOT OPENVDB_BUILD_CORE) + set(OPENVDB_LIB OpenVDB::openvdb) +else() + set(OPENVDB_LIB openvdb) +endif() + +set(OPENVDB_PYTHON_DEPS) +set(OPENVDB_PYTHON_INCLUDES) + +# Small function which mimics basic output (bar components) of +# FindPackageHandleStandardArgs. This is required as we want to ensure +# the minimum python version is MINIMUM_PYTHON_VERSION - however this cannot +# be provided to find_package(Python) with differing major versions. e.g. +# calls to find_package(Python 2.7) fails if python3 is found on the system. +function(OPENVDB_CHECK_PYTHON_VERSION _PY_VERSION _PY_PATH) + if(_PY_VERSION VERSION_LESS MINIMUM_PYTHON_VERSION) + message(FATAL_ERROR "Could NOT find Python: Found unsuitable version \"${_PY_VERSION}\"" + "but required is at least \"${MINIMUM_PYTHON_VERSION}\" (found ${_PY_PATH})" + ) + else() + message(STATUS "Found Python: ${_PY_PATH}) (found suitable version \"${_PY_VERSION}\", " + "minimum required is \"${MINIMUM_PYTHON_VERSION}\")" + ) + endif() +endfunction() + +# Configure Python and Numpy. Note that: +# - find_package(Python Interpreter Development) requires CMake >= 3.12 +# - find_package(Python NumPy) requires CMake >= 3.14 +# To ensure consistent versions between components Interpreter, Compiler, +# Development and NumPy, specify all components at the same time when using +# FindPython +# Note that the Interpreter component is only required for the python test +if(${CMAKE_VERSION} VERSION_LESS 3.12) + # CMake < 3.12 + find_package(PythonInterp REQUIRED) + find_package(PythonLibs REQUIRED) + + # Alias variables to newer names + set(Python_VERSION ${PYTHON_VERSION_STRING}) + set(Python_VERSION_MAJOR ${PYTHON_VERSION_MAJOR}) + set(Python_VERSION_MINOR ${PYTHON_VERSION_MINOR}) + set(Python_EXECUTABLE ${PYTHON_EXECUTABLE}) + set(OPENVDB_PYTHON_DEPS ${PYTHON_LIBRARIES}) + get_filename_component(Python_LIBRARY_DIRS ${OPENVDB_PYTHON_DEPS} DIRECTORY) + + list(APPEND OPENVDB_PYTHON_INCLUDES ${PYTHON_INCLUDE_DIR}) + + OPENVDB_CHECK_PYTHON_VERSION(${Python_VERSION} ${Python_EXECUTABLE}) + + if(USE_NUMPY) + # Note: This uses our custom backport in cmake/backports + find_package(NumPy ${MINIMUM_NUMPY_VERSION} REQUIRED) + list(APPEND OPENVDB_PYTHON_DEPS Python::NumPy) + endif() +elseif(${CMAKE_VERSION} VERSION_LESS 3.14) + # CMake < 3.14 + find_package(Python QUIET COMPONENTS Interpreter Development) + OPENVDB_CHECK_PYTHON_VERSION(${Python_VERSION} ${Python_EXECUTABLE}) + list(APPEND OPENVDB_PYTHON_DEPS Python::Python) + + if(USE_NUMPY) + # Note: This uses our custom backport in cmake/backports + find_package(NumPy ${MINIMUM_NUMPY_VERSION} REQUIRED) + list(APPEND OPENVDB_PYTHON_DEPS Python::NumPy) + endif() +else() + # CMake >= 3.14 + if(USE_NUMPY) + find_package(Python QUIET REQUIRED COMPONENTS Interpreter Development NumPy) + else() + find_package(Python QUIET REQUIRED COMPONENTS Interpreter Development) + endif() + + OPENVDB_CHECK_PYTHON_VERSION(${Python_VERSION} ${Python_EXECUTABLE}) + list(APPEND OPENVDB_PYTHON_DEPS Python::Python) + + # Check NumPy version + if(USE_NUMPY AND (Python_NumPy_VERSION VERSION_LESS MINIMUM_NUMPY_VERSION)) + message(FATAL_ERROR "Could NOT find NumPy (Required is at least version " + "\"${MINIMUM_NUMPY_VERSION}\")" + ) + elseif(USE_NUMPY) + message(STATUS "Found NumPy: ${Python_NumPy_INCLUDE_DIRS} (found suitable " + "version \"${Python_NumPy_VERSION}\", minimum required is " + "\"${MINIMUM_NUMPY_VERSION}\")" + ) + list(APPEND OPENVDB_PYTHON_DEPS Python::NumPy) + endif() +endif() + +if(USE_NUMPY) + if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_NUMPY_VERSION) + if(Python_NumPy_VERSION VERSION_LESS FUTURE_MINIMUM_NUMPY_VERSION) + message(DEPRECATION "Support for NumPy versions < ${FUTURE_MINIMUM_NUMPY_VERSION} " + "is deprecated and will be removed.") + endif() + endif() +endif() + +if(TARGET openvdb_shared) + # @note Both of these must be set for Boost 1.70 (VFX2020) to link against + # boost shared libraries (more specifically libraries built with -fPIC). + # http://boost.2283326.n4.nabble.com/CMake-config-scripts-broken-in-1-70-td4708957.html + # https://github.com/boostorg/boost_install/commit/160c7cb2b2c720e74463865ef0454d4c4cd9ae7c + set(BUILD_SHARED_LIBS ON) + set(Boost_USE_STATIC_LIBS OFF) +endif() + +# Boost python handling. Try to find the following named boost python libraries: +# - boost_python{Python_VERSION_MAJOR}${Python_VERSION_MINOR} +# - boost_python{Python_VERSION_MAJOR} +# - boost_python +# Prioritize the version suffixed library, failing if none exist. + +find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS python${Python_VERSION_MAJOR}${Python_VERSION_MINOR} +) +find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS python${Python_VERSION_MAJOR} +) +find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS python +) + +if(TARGET Boost::python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}) + message(STATUS "Found boost_python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}") + list(APPEND OPENVDB_PYTHON_DEPS Boost::python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}) +elseif(TARGET Boost::python${Python_VERSION_MAJOR}) + message(STATUS "Found boost_python${Python_VERSION_MAJOR}") + list(APPEND OPENVDB_PYTHON_DEPS Boost::python${Python_VERSION_MAJOR}) +elseif(TARGET Boost::python) + message(STATUS "Found non-suffixed boost_python, assuming to be python version " + "\"${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}\" compatible" + ) + list(APPEND OPENVDB_PYTHON_DEPS Boost::python) +else() + message(FATAL_ERROR "Unable to find boost_python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}, " + "boost_python${Python_VERSION_MAJOR} or boost_python." + ) +endif() + +# If boost >= 1.65, find the required numpy boost component and link that in. +# Use the same system as above, first trying without the suffix, then with. + +if(USE_NUMPY AND ( + (${Boost_VERSION} VERSION_EQUAL 1.65) OR + (${Boost_VERSION} VERSION_GREATER 1.65))) + + find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS numpy${Python_VERSION_MAJOR}${Python_VERSION_MINOR} + ) + find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS numpy${Python_VERSION_MAJOR} + ) + find_package(Boost ${MINIMUM_BOOST_VERSION} + QUIET COMPONENTS numpy + ) + + if(TARGET Boost::numpy${Python_VERSION_MAJOR}${Python_VERSION_MINOR}) + message(STATUS "Found boost_numpy${Python_VERSION_MAJOR}${Python_VERSION_MINOR}") + list(APPEND OPENVDB_PYTHON_DEPS Boost::numpy${Python_VERSION_MAJOR}${Python_VERSION_MINOR}) + elseif(TARGET Boost::numpy${Python_VERSION_MAJOR}) + message(STATUS "Found boost_numpy${Python_VERSION_MAJOR}") + list(APPEND OPENVDB_PYTHON_DEPS Boost::numpy${Python_VERSION_MAJOR}) + elseif(TARGET Boost::numpy) + message(STATUS "Found non-suffixed boost_numpy, assuming to be python version " + "\"${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}\" compatible" + ) + list(APPEND OPENVDB_PYTHON_DEPS Boost::numpy) + else() + message(FATAL_ERROR "Unable to find boost_numpy${Python_VERSION_MAJOR}${Python_VERSION_MINOR}, " + "boost_numpy${Python_VERSION_MAJOR} or boost_numpy." + ) + endif() +endif() + +set(OPENVDB_PYTHON_DEPENDENT_LIBS + ${OPENVDB_LIB} + ${OPENVDB_PYTHON_DEPS} +) + +########################################################################## + +set(OPENVDB_PYTHON_MODULE_SOURCE_FILES + pyFloatGrid.cc + pyIntGrid.cc + pyMetadata.cc + pyPointGrid.cc + pyOpenVDBModule.cc + pyPointGrid.cc + pyTransform.cc + pyVec3Grid.cc +) + +if(NOT DEFINED PYOPENVDB_INSTALL_DIRECTORY) + set(PYOPENVDB_INSTALL_DIRECTORY + ${CMAKE_INSTALL_LIBDIR}/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR} + CACHE STRING "The directory to install the pyopenvdb.so module." + ) +endif() + +add_library(pyopenvdb SHARED + ${OPENVDB_PYTHON_MODULE_SOURCE_FILES} +) + +target_include_directories(pyopenvdb + SYSTEM PUBLIC ${OPENVDB_PYTHON_INCLUDES} +) + +if(OPENVDB_PYTHON_WRAP_ALL_GRID_TYPES) + target_compile_definitions(pyopenvdb PRIVATE "-DPY_OPENVDB_WRAP_ALL_GRID_TYPES") +endif() + +if(USE_NUMPY) + target_compile_definitions(pyopenvdb PUBLIC "-DPY_OPENVDB_USE_NUMPY") +endif() + +target_link_libraries(pyopenvdb + ${OPENVDB_PYTHON_DEPENDENT_LIBS} +) + +set_target_properties(pyopenvdb PROPERTIES + PREFIX "" # no 'lib' prefix +) + +if(UNIX) + # must be .so (not .dylib) + set_target_properties(pyopenvdb PROPERTIES + SUFFIX ".so" + ) +endif() + +if(OPENVDB_ENABLE_RPATH) + # @todo There is probably a better way to do this for imported targets + set(RPATHS "") + list(APPEND RPATHS + ${Boost_LIBRARY_DIRS} + ${IlmBase_LIBRARY_DIRS} + ${Log4cplus_LIBRARY_DIRS} + ${Blosc_LIBRARY_DIRS} + ${Tbb_LIBRARY_DIRS} + ${Python_LIBRARY_DIRS} + ) + if(OPENVDB_BUILD_CORE) + list(APPEND RPATHS ${CMAKE_INSTALL_PREFIX}/lib) + else() + list(APPEND RPATHS ${OpenVDB_LIBRARY_DIRS}) + endif() + + list(REMOVE_DUPLICATES RPATHS) + set_target_properties(pyopenvdb + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) + unset(RPATHS) +endif() + +set(PYTHON_PUBLIC_INCLUDE_NAMES + pyopenvdb.h +) + +install(TARGETS + pyopenvdb + DESTINATION + ${PYOPENVDB_INSTALL_DIRECTORY} +) + +install(FILES ${PYTHON_PUBLIC_INCLUDE_NAMES} DESTINATION ${OPENVDB_INSTALL_INCLUDEDIR}/python) + +# pytest + +add_test(pytest ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/TestOpenVDB.py -v) +set_tests_properties(pytest PROPERTIES ENVIRONMENT "PYTHONPATH=$ENV{PYTHONPATH}:${CMAKE_CURRENT_BINARY_DIR}") + + diff --git a/openvdb/python/pyAccessor.h b/openvdb/python/pyAccessor.h new file mode 100644 index 00000000..d5a69f42 --- /dev/null +++ b/openvdb/python/pyAccessor.h @@ -0,0 +1,312 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_PYACCESSOR_HAS_BEEN_INCLUDED +#define OPENVDB_PYACCESSOR_HAS_BEEN_INCLUDED + +#include +#include "openvdb/openvdb.h" +#include "pyutil.h" + +namespace pyAccessor { + +namespace py = boost::python; +using namespace openvdb::OPENVDB_VERSION_NAME; + + +//@{ +/// Type traits for grid accessors +template +struct AccessorTraits +{ + using GridT = _GridT; + using NonConstGridT = GridT; + using GridPtrT = typename NonConstGridT::Ptr; + using AccessorT = typename NonConstGridT::Accessor; + using ValueT = typename AccessorT::ValueType; + + static const bool IsConst = false; + + static const char* typeName() { return "Accessor"; } + + static void setActiveState(AccessorT& acc, const Coord& ijk, bool on) { + acc.setActiveState(ijk, on); + } + static void setValueOnly(AccessorT& acc, const Coord& ijk, const ValueT& val) { + acc.setValueOnly(ijk, val); + } + static void setValueOn(AccessorT& acc, const Coord& ijk) { acc.setValueOn(ijk); } + static void setValueOn(AccessorT& acc, const Coord& ijk, const ValueT& val) { + acc.setValueOn(ijk, val); + } + static void setValueOff(AccessorT& acc, const Coord& ijk) { acc.setValueOff(ijk); } + static void setValueOff(AccessorT& acc, const Coord& ijk, const ValueT& val) { + acc.setValueOff(ijk, val); + } +}; + +// Partial specialization for const accessors +template +struct AccessorTraits +{ + using GridT = const _GridT; + using NonConstGridT = _GridT; + using GridPtrT = typename NonConstGridT::ConstPtr; + using AccessorT = typename NonConstGridT::ConstAccessor; + using ValueT = typename AccessorT::ValueType; + + static const bool IsConst = true; + + static const char* typeName() { return "ConstAccessor"; } + + static void setActiveState(AccessorT&, const Coord&, bool) { notWritable(); } + static void setValueOnly(AccessorT&, const Coord&, const ValueT&) { notWritable(); } + static void setValueOn(AccessorT&, const Coord&) { notWritable(); } + static void setValueOn(AccessorT&, const Coord&, const ValueT&) { notWritable(); } + static void setValueOff(AccessorT&, const Coord&) { notWritable(); } + static void setValueOff(AccessorT&, const Coord&, const ValueT&) { notWritable(); } + + static void notWritable() + { + PyErr_SetString(PyExc_TypeError, "accessor is read-only"); + py::throw_error_already_set(); + } +}; +//@} + + +//////////////////////////////////////// + + +/// Variant of pyutil::extractArg() that extracts a Coord from a py::object +/// argument to a given ValueAccessor method +template +inline Coord +extractCoordArg(py::object obj, const char* functionName, int argIdx = 0) +{ + return pyutil::extractArg(obj, functionName, + AccessorTraits::typeName(), argIdx, "tuple(int, int, int)"); +} + + +/// Variant of pyutil::extractArg() that extracts a value of type +/// ValueAccessor::ValueType from an argument to a ValueAccessor method +template +inline typename GridT::ValueType +extractValueArg( + py::object obj, + const char* functionName, + int argIdx = 0, // args are numbered starting from 1 + const char* expectedType = nullptr) +{ + return pyutil::extractArg( + obj, functionName, AccessorTraits::typeName(), argIdx, expectedType); +} + + +//////////////////////////////////////// + + +/// @brief ValueAccessor wrapper class that also stores a grid pointer, +/// so that the grid doesn't get deleted as long as the accessor is live +/// +/// @internal This class could have just been made to inherit from ValueAccessor, +/// but the method wrappers allow for more Pythonic error messages. For example, +/// if we constructed the Python getValue() method directly from the corresponding +/// ValueAccessor method, as follows, +/// +/// .def("getValue", &Accessor::getValue, ...) +/// +/// then the conversion from a Python type to a Coord& would be done +/// automatically. But if the Python method were called with an object of +/// a type that is not convertible to a Coord, then the TypeError message +/// would say something like "TypeError: No registered converter was able to +/// produce a C++ rvalue of type openvdb::math::Coord...". +/// Handling the type conversion manually is more work, but it allows us to +/// instead generate messages like "TypeError: expected tuple(int, int, int), +/// found str as argument to FloatGridAccessor.getValue()". +template +class AccessorWrap +{ +public: + using Traits = AccessorTraits<_GridType>; + using Accessor = typename Traits::AccessorT; + using ValueType = typename Traits::ValueT; + using GridType = typename Traits::NonConstGridT; + using GridPtrType = typename Traits::GridPtrT; + + AccessorWrap(GridPtrType grid): mGrid(grid), mAccessor(grid->getAccessor()) {} + + AccessorWrap copy() const { return *this; } + + void clear() { mAccessor.clear(); } + + GridPtrType parent() const { return mGrid; } + + ValueType getValue(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "getValue"); + return mAccessor.getValue(ijk); + } + + int getValueDepth(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "getValueDepth"); + return mAccessor.getValueDepth(ijk); + } + + int isVoxel(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "isVoxel"); + return mAccessor.isVoxel(ijk); + } + + py::tuple probeValue(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "probeValue"); + ValueType value; + bool on = mAccessor.probeValue(ijk, value); + return py::make_tuple(value, on); + } + + bool isValueOn(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "isValueOn"); + return mAccessor.isValueOn(ijk); + } + + void setActiveState(py::object coordObj, bool on) + { + const Coord ijk = extractCoordArg(coordObj, "setActiveState", /*argIdx=*/1); + Traits::setActiveState(mAccessor, ijk, on); + } + + void setValueOnly(py::object coordObj, py::object valObj) + { + Coord ijk = extractCoordArg(coordObj, "setValueOnly", 1); + ValueType val = extractValueArg(valObj, "setValueOnly", 2); + Traits::setValueOnly(mAccessor, ijk, val); + } + + void setValueOn(py::object coordObj, py::object valObj) + { + Coord ijk = extractCoordArg(coordObj, "setValueOn", 1); + if (valObj.is_none()) { + Traits::setValueOn(mAccessor, ijk); + } else { + ValueType val = extractValueArg(valObj, "setValueOn", 2); + Traits::setValueOn(mAccessor, ijk, val); + } + } + + void setValueOff(py::object coordObj, py::object valObj) + { + Coord ijk = extractCoordArg(coordObj, "setValueOff", 1); + if (valObj.is_none()) { + Traits::setValueOff(mAccessor, ijk); + } else { + ValueType val = extractValueArg(valObj, "setValueOff", 2); + Traits::setValueOff(mAccessor, ijk, val); + } + } + + int isCached(py::object coordObj) + { + const Coord ijk = extractCoordArg(coordObj, "isCached"); + return mAccessor.isCached(ijk); + } + + /// @brief Define a Python wrapper class for this C++ class. + static void wrap() + { + const std::string + pyGridTypeName = pyutil::GridTraits::name(), + pyValueTypeName = openvdb::typeNameAsString(), + pyAccessorTypeName = Traits::typeName(); + + py::class_ clss( + pyAccessorTypeName.c_str(), + (std::string(Traits::IsConst ? "Read-only" : "Read/write") + + " access by (i, j, k) index coordinates to the voxels\nof a " + + pyGridTypeName).c_str(), + py::no_init); + + clss.def("copy", &AccessorWrap::copy, + ("copy() -> " + pyAccessorTypeName + "\n\n" + "Return a copy of this accessor.").c_str()) + + .def("clear", &AccessorWrap::clear, + "clear()\n\n" + "Clear this accessor of all cached data.") + + .add_property("parent", &AccessorWrap::parent, + ("this accessor's parent " + pyGridTypeName).c_str()) + + // + // Voxel access + // + .def("getValue", &AccessorWrap::getValue, + py::arg("ijk"), + ("getValue(ijk) -> " + pyValueTypeName + "\n\n" + "Return the value of the voxel at coordinates (i, j, k).").c_str()) + + .def("getValueDepth", &AccessorWrap::getValueDepth, + py::arg("ijk"), + "getValueDepth(ijk) -> int\n\n" + "Return the tree depth (0 = root) at which the value of voxel\n" + "(i, j, k) resides. If (i, j, k) isn't explicitly represented in\n" + "the tree (i.e., it is implicitly a background voxel), return -1.") + + .def("isVoxel", &AccessorWrap::isVoxel, + py::arg("ijk"), + "isVoxel(ijk) -> bool\n\n" + "Return True if voxel (i, j, k) resides at the leaf level of the tree.") + + .def("probeValue", &AccessorWrap::probeValue, + py::arg("ijk"), + "probeValue(ijk) -> value, bool\n\n" + "Return the value of the voxel at coordinates (i, j, k)\n" + "together with the voxel's active state.") + + .def("isValueOn", &AccessorWrap::isValueOn, + py::arg("ijk"), + "isValueOn(ijk) -> bool\n\n" + "Return the active state of the voxel at coordinates (i, j, k).") + .def("setActiveState", &AccessorWrap::setActiveState, + (py::arg("ijk"), py::arg("on")), + "setActiveState(ijk, on)\n\n" + "Mark voxel (i, j, k) as either active or inactive (True or False),\n" + "but don't change its value.") + + .def("setValueOnly", &AccessorWrap::setValueOnly, + (py::arg("ijk"), py::arg("value")), + "setValueOnly(ijk, value)\n\n" + "Set the value of voxel (i, j, k), but don't change its active state.") + + .def("setValueOn", &AccessorWrap::setValueOn, + (py::arg("ijk"), py::arg("value") = py::object()), + "setValueOn(ijk, value=None)\n\n" + "Mark voxel (i, j, k) as active and, if the given value\n" + "is not None, set the voxel's value.\n") + .def("setValueOff", &AccessorWrap::setValueOff, + (py::arg("ijk"), py::arg("value") = py::object()), + "setValueOff(ijk, value=None)\n\n" + "Mark voxel (i, j, k) as inactive and, if the given value\n" + "is not None, set the voxel's value.") + + .def("isCached", &AccessorWrap::isCached, + py::arg("ijk"), + "isCached(ijk) -> bool\n\n" + "Return True if this accessor has cached the path to voxel (i, j, k).") + + ; // py::class_ + } + +private: + const GridPtrType mGrid; + Accessor mAccessor; +}; // class AccessorWrap + +} // namespace pyAccessor + +#endif // OPENVDB_PYACCESSOR_HAS_BEEN_INCLUDED diff --git a/openvdb/python/pyFloatGrid.cc b/openvdb/python/pyFloatGrid.cc new file mode 100644 index 00000000..11be024f --- /dev/null +++ b/openvdb/python/pyFloatGrid.cc @@ -0,0 +1,39 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyFloatGrid.cc +/// @author Peter Cucka +/// @brief Boost.Python wrappers for scalar, floating-point openvdb::Grid types + +#include "pyGrid.h" + + +void exportFloatGrid(); + + +/// Create a Python wrapper for each supported Grid type. +void +exportFloatGrid() +{ + // Add a module-level list that gives the types of all supported Grid classes. + py::scope().attr("GridTypes") = py::list(); + +#if defined(PY_OPENVDB_USE_NUMPY) && !defined(PY_OPENVDB_USE_BOOST_PYTHON_NUMPY) + // Specify that py::numeric::array should refer to the Python type numpy.ndarray + // (rather than the older Numeric.array). + py::numeric::array::set_module_and_type("numpy", "ndarray"); +#endif + + pyGrid::exportGrid(); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + pyGrid::exportGrid(); +#endif + + py::def("createLevelSetSphere", + &pyGrid::createLevelSetSphere, + (py::arg("radius"), py::arg("center")=openvdb::Coord(), py::arg("voxelSize")=1.0, + py::arg("halfWidth")=openvdb::LEVEL_SET_HALF_WIDTH), + "createLevelSetSphere(radius, center, voxelSize, halfWidth) -> FloatGrid\n\n" + "Return a grid containing a narrow-band level set representation\n" + "of a sphere."); +} diff --git a/openvdb/python/pyGrid.h b/openvdb/python/pyGrid.h new file mode 100644 index 00000000..7b787d3b --- /dev/null +++ b/openvdb/python/pyGrid.h @@ -0,0 +1,2566 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyGrid.h +/// @author Peter Cucka +/// @brief Boost.Python wrapper for openvdb::Grid + +#ifndef OPENVDB_PYGRID_HAS_BEEN_INCLUDED +#define OPENVDB_PYGRID_HAS_BEEN_INCLUDED + +#include +#ifndef DWA_BOOST_VERSION +#include +#define DWA_BOOST_VERSION (10 * BOOST_VERSION) +#endif +#ifdef PY_OPENVDB_USE_NUMPY + #if DWA_BOOST_VERSION >= 1065000 + // boost::python::numeric was replaced with boost::python::numpy in Boost 1.65. + // (boost::python::numpy requires NumPy 1.7 or later.) + #include + //#include // for PyArray_Descr (see pyGrid::arrayTypeId()) + #define PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + #else + #define PY_ARRAY_UNIQUE_SYMBOL PY_OPENVDB_ARRAY_API + #define NO_IMPORT_ARRAY // NumPy gets initialized during module initialization + #include + #ifdef NPY_1_7_API_VERSION + #define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION + #endif + #include // for PyArrayObject + #endif + #include "openvdb/tools/MeshToVolume.h" + #include "openvdb/tools/VolumeToMesh.h" // for tools::volumeToMesh() +#endif +#include "openvdb/openvdb.h" +#include "openvdb/io/Stream.h" +#include "openvdb/math/Math.h" // for math::isExactlyEqual() +#include "openvdb/points/PointDataGrid.h" +#include "openvdb/tools/LevelSetSphere.h" +#include "openvdb/tools/Dense.h" +#include "openvdb/tools/ChangeBackground.h" +#include "openvdb/tools/Prune.h" +#include "openvdb/tools/SignedFloodFill.h" +#include "pyutil.h" +#include "pyAccessor.h" // for pyAccessor::AccessorWrap +#include "pyopenvdb.h" +#include // for std::max() +#include // for memcpy() +#include +#include +#include +#include +#include + +namespace py = boost::python; + +#ifdef __clang__ +// This is a private header, so it's OK to include a "using namespace" directive. +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wheader-hygiene" +#endif + +using namespace openvdb::OPENVDB_VERSION_NAME; + +#ifdef __clang__ +#pragma clang diagnostic pop +#endif + + +namespace pyopenvdb { + +inline py::object +getPyObjectFromGrid(const GridBase::Ptr& grid) +{ + if (!grid) return py::object(); + +#define CONVERT_BASE_TO_GRID(GridType, grid) \ + if (grid->isType()) { \ + return py::object(gridPtrCast(grid)); \ + } + + CONVERT_BASE_TO_GRID(FloatGrid, grid); + CONVERT_BASE_TO_GRID(Vec3SGrid, grid); + CONVERT_BASE_TO_GRID(BoolGrid, grid); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + CONVERT_BASE_TO_GRID(DoubleGrid, grid); + CONVERT_BASE_TO_GRID(Int32Grid, grid); + CONVERT_BASE_TO_GRID(Int64Grid, grid); + CONVERT_BASE_TO_GRID(Vec3IGrid, grid); + CONVERT_BASE_TO_GRID(Vec3DGrid, grid); + CONVERT_BASE_TO_GRID(points::PointDataGrid, grid); +#endif +#undef CONVERT_BASE_TO_GRID + + OPENVDB_THROW(TypeError, grid->type() + " is not a supported OpenVDB grid type"); +} + + +inline openvdb::GridBase::Ptr +getGridFromPyObject(const boost::python::object& gridObj) +{ + if (!gridObj) return GridBase::Ptr(); + +#define CONVERT_GRID_TO_BASE(GridPtrType) \ + { \ + py::extract x(gridObj); \ + if (x.check()) return x(); \ + } + + // Extract a grid pointer of one of the supported types + // from the input object, then cast it to a base pointer. + CONVERT_GRID_TO_BASE(FloatGrid::Ptr); + CONVERT_GRID_TO_BASE(Vec3SGrid::Ptr); + CONVERT_GRID_TO_BASE(BoolGrid::Ptr); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + CONVERT_GRID_TO_BASE(DoubleGrid::Ptr); + CONVERT_GRID_TO_BASE(Int32Grid::Ptr); + CONVERT_GRID_TO_BASE(Int64Grid::Ptr); + CONVERT_GRID_TO_BASE(Vec3IGrid::Ptr); + CONVERT_GRID_TO_BASE(Vec3DGrid::Ptr); + CONVERT_GRID_TO_BASE(points::PointDataGrid::Ptr); +#endif +#undef CONVERT_GRID_TO_BASE + + OPENVDB_THROW(TypeError, + pyutil::className(gridObj) + " is not a supported OpenVDB grid type"); +} + + +inline openvdb::GridBase::Ptr +getGridFromPyObject(PyObject* gridObj) +{ + return getGridFromPyObject(pyutil::pyBorrow(gridObj)); +} + +} // namespace pyopenvdb + + +//////////////////////////////////////// + + +namespace pyGrid { + +inline py::object +getGridFromGridBase(GridBase::Ptr grid) +{ + py::object obj; + try { + obj = pyopenvdb::getPyObjectFromGrid(grid); + } catch (openvdb::TypeError& e) { + PyErr_SetString(PyExc_TypeError, e.what()); + py::throw_error_already_set(); + return py::object(); + } + return obj; +} + + +/// GridBase is not exposed in Python because it isn't really needed +/// (and because exposing it would be complicated, requiring wrapping +/// pure virtual functions like GridBase::baseTree()), but there are +/// a few cases where, internally, we need to extract a GridBase::Ptr +/// from a py::object. Hence this converter. +inline GridBase::Ptr +getGridBaseFromGrid(py::object gridObj) +{ + GridBase::Ptr grid; + try { + grid = pyopenvdb::getGridFromPyObject(gridObj); + } catch (openvdb::TypeError& e) { + PyErr_SetString(PyExc_TypeError, e.what()); + py::throw_error_already_set(); + return GridBase::Ptr(); + } + return grid; +} + + +//////////////////////////////////////// + + +/// Variant of pyutil::extractArg() that uses the class name of a given grid type +template +inline T +extractValueArg( + py::object obj, + const char* functionName, + int argIdx = 0, // args are numbered starting from 1 + const char* expectedType = nullptr) +{ + return pyutil::extractArg(obj, + functionName, pyutil::GridTraits::name(), argIdx, expectedType); +} + + +/// @brief Variant of pyutil::extractArg() that uses the class name +/// and @c ValueType of a given grid type +template +inline typename GridType::ValueType +extractValueArg( + py::object obj, + const char* functionName, + int argIdx = 0, // args are numbered starting from 1 + const char* expectedType = nullptr) +{ + return extractValueArg( + obj, functionName, argIdx, expectedType); +} + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +copyGrid(GridType& grid) +{ + return grid.copy(); +} + + +template +inline bool +sharesWith(const GridType& grid, py::object other) +{ + py::extract x(other); + if (x.check()) { + typename GridType::ConstPtr otherGrid = x(); + return (&otherGrid->tree() == &grid.tree()); + } + return false; +} + + +//////////////////////////////////////// + + +template +inline std::string +getValueType() +{ + return pyutil::GridTraits::valueTypeName(); +} + + +template +inline typename GridType::ValueType +getZeroValue() +{ + return openvdb::zeroVal(); +} + + +template +inline typename GridType::ValueType +getOneValue() +{ + using ValueT = typename GridType::ValueType; + return ValueT(openvdb::zeroVal() + 1); +} + + +template +inline bool +notEmpty(const GridType& grid) +{ + return !grid.empty(); +} + + +template +inline typename GridType::ValueType +getGridBackground(const GridType& grid) +{ + return grid.background(); +} + + +template +inline void +setGridBackground(GridType& grid, py::object obj) +{ + tools::changeBackground(grid.tree(), extractValueArg(obj, "setBackground")); +} + + +inline void +setGridName(GridBase::Ptr grid, py::object strObj) +{ + if (grid) { + if (!strObj) { // if name is None + grid->removeMeta(GridBase::META_GRID_NAME); + } else { + const std::string name = pyutil::extractArg( + strObj, "setName", /*className=*/nullptr, /*argIdx=*/1, "str"); + grid->setName(name); + } + } +} + + +inline void +setGridCreator(GridBase::Ptr grid, py::object strObj) +{ + if (grid) { + if (!strObj) { // if name is None + grid->removeMeta(GridBase::META_GRID_CREATOR); + } else { + const std::string name = pyutil::extractArg( + strObj, "setCreator", /*className=*/nullptr, /*argIdx=*/1, "str"); + grid->setCreator(name); + } + } +} + + +inline std::string +getGridClass(GridBase::ConstPtr grid) +{ + return GridBase::gridClassToString(grid->getGridClass()); +} + + +inline void +setGridClass(GridBase::Ptr grid, py::object strObj) +{ + if (!strObj) { + grid->clearGridClass(); + } else { + const std::string name = pyutil::extractArg( + strObj, "setGridClass", /*className=*/nullptr, /*argIdx=*/1, "str"); + grid->setGridClass(GridBase::stringToGridClass(name)); + } +} + + +inline std::string +getVecType(GridBase::ConstPtr grid) +{ + return GridBase::vecTypeToString(grid->getVectorType()); +} + + +inline void +setVecType(GridBase::Ptr grid, py::object strObj) +{ + if (!strObj) { + grid->clearVectorType(); + } else { + const std::string name = pyutil::extractArg( + strObj, "setVectorType", /*className=*/nullptr, /*argIdx=*/1, "str"); + grid->setVectorType(GridBase::stringToVecType(name)); + } +} + + +inline std::string +gridInfo(GridBase::ConstPtr grid, int verbosity) +{ + std::ostringstream ostr; + grid->print(ostr, std::max(1, verbosity)); + return ostr.str(); +} + + +//////////////////////////////////////// + + +inline void +setGridTransform(GridBase::Ptr grid, py::object xformObj) +{ + if (grid) { + if (math::Transform::Ptr xform = pyutil::extractArg( + xformObj, "setTransform", /*className=*/nullptr, /*argIdx=*/1, "Transform")) + { + grid->setTransform(xform); + } else { + PyErr_SetString(PyExc_ValueError, "null transform"); + py::throw_error_already_set(); + } + } +} + + +//////////////////////////////////////// + + +// Helper class to construct a pyAccessor::AccessorWrap for a given grid, +// permitting partial specialization for const vs. non-const grids +template +struct AccessorHelper +{ + using Wrapper = typename pyAccessor::AccessorWrap; + static Wrapper wrap(typename GridType::Ptr grid) + { + if (!grid) { + PyErr_SetString(PyExc_ValueError, "null grid"); + py::throw_error_already_set(); + } + return Wrapper(grid); + } +}; + +// Specialization for const grids +template +struct AccessorHelper +{ + using Wrapper = typename pyAccessor::AccessorWrap; + static Wrapper wrap(typename GridType::ConstPtr grid) + { + if (!grid) { + PyErr_SetString(PyExc_ValueError, "null grid"); + py::throw_error_already_set(); + } + return Wrapper(grid); + } +}; + + +/// Return a non-const accessor (wrapped in a pyAccessor::AccessorWrap) for the given grid. +template +inline typename AccessorHelper::Wrapper +getAccessor(typename GridType::Ptr grid) +{ + return AccessorHelper::wrap(grid); +} + +/// @brief Return a const accessor (wrapped in a pyAccessor::AccessorWrap) for the given grid. +/// @internal Note that the grid pointer is non-const, even though the grid is +/// treated as const. This is because we don't expose a const grid type in Python. +template +inline typename AccessorHelper::Wrapper +getConstAccessor(typename GridType::Ptr grid) +{ + return AccessorHelper::wrap(grid); +} + + +//////////////////////////////////////// + + +template +inline py::tuple +evalLeafBoundingBox(const GridType& grid) +{ + CoordBBox bbox; + grid.tree().evalLeafBoundingBox(bbox); + return py::make_tuple(bbox.min(), bbox.max()); +} + + +template +inline Coord +evalLeafDim(const GridType& grid) +{ + Coord dim; + grid.tree().evalLeafDim(dim); + return dim; +} + + +template +inline py::tuple +evalActiveVoxelBoundingBox(const GridType& grid) +{ + CoordBBox bbox = grid.evalActiveVoxelBoundingBox(); + return py::make_tuple(bbox.min(), bbox.max()); +} + + +template +inline py::tuple +getNodeLog2Dims(const GridType& grid) +{ + std::vector dims; + grid.tree().getNodeLog2Dims(dims); + py::list lst; + for (size_t i = 0, N = dims.size(); i < N; ++i) { + lst.append(dims[i]); + } + return py::tuple(lst); +} + + +template +inline Index +treeDepth(const GridType& grid) +{ + return grid.tree().treeDepth(); +} + + +template +inline Index32 +leafCount(const GridType& grid) +{ + return grid.tree().leafCount(); +} + + +template +inline Index32 +nonLeafCount(const GridType& grid) +{ + return grid.tree().nonLeafCount(); +} + + +template +inline Index64 +activeLeafVoxelCount(const GridType& grid) +{ + return grid.tree().activeLeafVoxelCount(); +} + + +template +inline py::tuple +evalMinMax(const GridType& grid) +{ + typename GridType::ValueType vmin, vmax; + grid.tree().evalMinMax(vmin, vmax); + return py::make_tuple(vmin, vmax); +} + + +template +inline py::tuple +getIndexRange(const GridType& grid) +{ + CoordBBox bbox; + grid.tree().getIndexRange(bbox); + return py::make_tuple(bbox.min(), bbox.max()); +} + + +//template +//inline void +//expandIndexRange(GridType& grid, py::object coordObj) +//{ +// Coord xyz = extractValueArg( +// coordObj, "expand", 0, "tuple(int, int, int)"); +// grid.tree().expand(xyz); +//} + + +//////////////////////////////////////// + + +inline py::dict +getAllMetadata(GridBase::ConstPtr grid) +{ + if (grid) return py::dict(static_cast(*grid)); + return py::dict(); +} + + +inline void +replaceAllMetadata(GridBase::Ptr grid, const MetaMap& metadata) +{ + if (grid) { + grid->clearMetadata(); + for (MetaMap::ConstMetaIterator it = metadata.beginMeta(); + it != metadata.endMeta(); ++it) + { + if (it->second) grid->insertMeta(it->first, *it->second); + } + } +} + + +inline void +updateMetadata(GridBase::Ptr grid, const MetaMap& metadata) +{ + if (grid) { + for (MetaMap::ConstMetaIterator it = metadata.beginMeta(); + it != metadata.endMeta(); ++it) + { + if (it->second) { + grid->removeMeta(it->first); + grid->insertMeta(it->first, *it->second); + } + } + } +} + + +inline py::dict +getStatsMetadata(GridBase::ConstPtr grid) +{ + MetaMap::ConstPtr metadata; + if (grid) metadata = grid->getStatsMetadata(); + if (metadata) return py::dict(*metadata); + return py::dict(); +} + + +inline py::object +getMetadataKeys(GridBase::ConstPtr grid) +{ + if (grid) { +#if PY_MAJOR_VERSION >= 3 + // Return an iterator over the "keys" view of a dict. + return py::import("builtins").attr("iter")( + py::dict(static_cast(*grid)).keys()); +#else + return py::dict(static_cast(*grid)).iterkeys(); +#endif + } + return py::object(); +} + + +inline py::object +getMetadata(GridBase::ConstPtr grid, py::object nameObj) +{ + if (!grid) return py::object(); + + const std::string name = pyutil::extractArg( + nameObj, "__getitem__", nullptr, /*argIdx=*/1, "str"); + + Metadata::ConstPtr metadata = (*grid)[name]; + if (!metadata) { + PyErr_SetString(PyExc_KeyError, name.c_str()); + py::throw_error_already_set(); + } + + // Use the MetaMap-to-dict converter (see pyOpenVDBModule.cc) to convert + // the Metadata value to a Python object of the appropriate type. + /// @todo Would be more efficient to convert the Metadata object + /// directly to a Python object. + MetaMap metamap; + metamap.insertMeta(name, *metadata); + return py::dict(metamap)[name]; +} + + +inline void +setMetadata(GridBase::Ptr grid, py::object nameObj, py::object valueObj) +{ + if (!grid) return; + + const std::string name = pyutil::extractArg( + nameObj, "__setitem__", nullptr, /*argIdx=*/1, "str"); + + // Insert the Python object into a Python dict, then use the dict-to-MetaMap + // converter (see pyOpenVDBModule.cc) to convert the dict to a MetaMap + // containing a Metadata object of the appropriate type. + /// @todo Would be more efficient to convert the Python object + /// directly to a Metadata object. + py::dict dictObj; + dictObj[name] = valueObj; + MetaMap metamap = py::extract(dictObj); + + if (Metadata::Ptr metadata = metamap[name]) { + grid->removeMeta(name); + grid->insertMeta(name, *metadata); + } +} + + +inline void +removeMetadata(GridBase::Ptr grid, const std::string& name) +{ + if (grid) { + Metadata::Ptr metadata = (*grid)[name]; + if (!metadata) { + PyErr_SetString(PyExc_KeyError, name.c_str()); + py::throw_error_already_set(); + } + grid->removeMeta(name); + } +} + + +inline bool +hasMetadata(GridBase::ConstPtr grid, const std::string& name) +{ + if (grid) return ((*grid)[name].get() != nullptr); + return false; +} + + +//////////////////////////////////////// + + +template +inline void +prune(GridType& grid, py::object tolerance) +{ + tools::prune(grid.tree(), extractValueArg(tolerance, "prune")); +} + + +template +inline void +pruneInactive(GridType& grid, py::object valObj) +{ + if (valObj.is_none()) { + tools::pruneInactive(grid.tree()); + } else { + tools::pruneInactiveWithValue( + grid.tree(), extractValueArg(valObj, "pruneInactive")); + } +} + + +template +inline void +fill(GridType& grid, py::object minObj, py::object maxObj, + py::object valObj, bool active) +{ + const Coord + bmin = extractValueArg(minObj, "fill", 1, "tuple(int, int, int)"), + bmax = extractValueArg(maxObj, "fill", 2, "tuple(int, int, int)"); + grid.fill(CoordBBox(bmin, bmax), extractValueArg(valObj, "fill", 3), active); +} + + +template +inline void +signedFloodFill(GridType& grid) +{ + tools::signedFloodFill(grid.tree()); +} + + +//////////////////////////////////////// + + +#ifndef PY_OPENVDB_USE_NUMPY + +template +inline void +copyFromArray(GridType&, const py::object&, py::object, py::object) +{ + PyErr_SetString(PyExc_NotImplementedError, "this module was built without NumPy support"); + boost::python::throw_error_already_set(); +} + +template +inline void +copyToArray(GridType&, const py::object&, py::object) +{ + PyErr_SetString(PyExc_NotImplementedError, "this module was built without NumPy support"); + boost::python::throw_error_already_set(); +} + +#else // if defined(PY_OPENVDB_USE_NUMPY) + +using ArrayDimVec = std::vector; + +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + +// ID numbers for supported value types +enum class DtId { NONE, FLOAT, DOUBLE, BOOL, INT16, INT32, INT64, UINT32, UINT64/*, HALF*/ }; + +using NumPyArrayType = py::numpy::ndarray; + +#else // if !defined PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + +// NumPy type numbers for supported value types +enum class DtId { + NONE = NPY_NOTYPE, + FLOAT = NPY_FLOAT, + DOUBLE = NPY_DOUBLE, + BOOL = NPY_BOOL, + INT16 = NPY_INT16, + INT32 = NPY_INT32, + INT64 = NPY_INT64, + UINT32 = NPY_UINT32, + UINT64 = NPY_UINT64, + //HALF = NPY_HALF +}; + +using NumPyArrayType = py::numeric::array; + +#endif // PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + + +template struct NumPyToCpp {}; +template<> struct NumPyToCpp { using type = float; }; +template<> struct NumPyToCpp { using type = double; }; +template<> struct NumPyToCpp { using type = bool; }; +template<> struct NumPyToCpp { using type = Int16; }; +template<> struct NumPyToCpp { using type = Int32; }; +template<> struct NumPyToCpp { using type = Int64; }; +template<> struct NumPyToCpp { using type = Index32; }; +template<> struct NumPyToCpp { using type = Index64; }; +//template<> struct NumPyToCpp { using type = half; }; + + +#if 0 +template struct CppToNumPy { static const DtId typeId = DtId::NONE; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::FLOAT; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::DOUBLE; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::BOOL; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::INT16; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::INT32; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::INT64; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::UINT32; }; +template<> struct CppToNumPy { static const DtId typeId = DtId::UINT64; }; +//template<> struct CppToNumPy { static const DtId typeId = DtId::HALF; }; +#endif + + +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + +// Return the ID number of the given NumPy array's data type. +/// @todo Revisit this if and when py::numpy::dtype ever provides a type number accessor. +inline DtId +arrayTypeId(const py::numpy::ndarray& arrayObj) +{ + namespace np = py::numpy; + const auto dtype = arrayObj.get_dtype(); +#if 0 + // More efficient than np::equivalent(), but requires NumPy headers. + if (const auto* descr = reinterpret_cast(dtype.ptr())) { + const auto typeId = static_cast(descr->type_num); + switch (typeId) { + case DtId::NONE: break; + case DtId::FLOAT: case DtId::DOUBLE: case DtId::BOOL: + case DtId::INT16: case DtId::INT32: case DtId::INT64: + case DtId::UINT32: case DtId::UINT64: + return typeId; + } + throw openvdb::TypeError{}; + } +#else + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::FLOAT; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::DOUBLE; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::BOOL; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::INT16; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::INT32; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::INT64; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::UINT32; + if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::UINT64; + //if (np::equivalent(dtype, np::dtype::get_builtin())) return DtId::HALF; +#endif + throw openvdb::TypeError{}; +} + + +// Return a string description of the given NumPy array's data type. +inline std::string +arrayTypeName(const py::numpy::ndarray& arrayObj) +{ + return pyutil::str(arrayObj.get_dtype()); +} + + +// Return the dimensions of the given NumPy array. +inline ArrayDimVec +arrayDimensions(const py::numpy::ndarray& arrayObj) +{ + ArrayDimVec dims; + for (int i = 0, N = arrayObj.get_nd(); i < N; ++i) { + dims.push_back(static_cast(arrayObj.shape(i))); + } + return dims; +} + +#else // !defined PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + +// Return the ID number of the given NumPy array's data type. +inline DtId +arrayTypeId(const py::numeric::array& arrayObj) +{ + const PyArray_Descr* dtype = nullptr; + if (PyArrayObject* arrayObjPtr = reinterpret_cast(arrayObj.ptr())) { + dtype = PyArray_DESCR(arrayObjPtr); + } + if (dtype) return static_cast(dtype->type_num); + throw openvdb::TypeError{}; +} + + +// Return a string description of the given NumPy array's data type. +inline std::string +arrayTypeName(const py::numeric::array& arrayObj) +{ + std::string name; + if (PyObject_HasAttrString(arrayObj.ptr(), "dtype")) { + name = pyutil::str(arrayObj.attr("dtype")); + } else { + name = "'_'"; + PyArrayObject* arrayObjPtr = reinterpret_cast(arrayObj.ptr()); + name[1] = PyArray_DESCR(arrayObjPtr)->kind; + } + return name; +} + + +// Return the dimensions of the given NumPy array. +inline ArrayDimVec +arrayDimensions(const py::numeric::array& arrayObj) +{ + const py::object shape = arrayObj.attr("shape"); + ArrayDimVec dims; + for (long i = 0, N = py::len(shape); i < N; ++i) { + dims.push_back(py::extract(shape[i])); + } + return dims; +} + + +inline py::object +copyNumPyArray(PyArrayObject* arrayObj, NPY_ORDER order = NPY_CORDER) +{ +#ifdef __GNUC__ + // Silence GCC "casting between pointer-to-function and pointer-to-object" warnings. + __extension__ +#endif + auto obj = pyutil::pyBorrow(PyArray_NewCopy(arrayObj, order)); + return obj; +} + +#endif // PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + + +// Abstract base class for helper classes that copy data between +// NumPy arrays of various types and grids of various types +template +class CopyOpBase +{ +public: + using ValueT = typename GridType::ValueType; + + CopyOpBase(bool toGrid, GridType& grid, py::object arrObj, + py::object coordObj, py::object tolObj) + : mToGrid(toGrid) + , mGrid(&grid) + { + const char* const opName[2] = { "copyToArray", "copyFromArray" }; + + // Extract the coordinates (i, j, k) of the voxel at which to start populating data. + // Voxel (i, j, k) will correspond to array element (0, 0, 0). + const Coord origin = extractValueArg( + coordObj, opName[toGrid], 1, "tuple(int, int, int)"); + + // Extract a reference to (not a copy of) the NumPy array, + // or throw an exception if arrObj is not a NumPy array object. + const auto arrayObj = pyutil::extractArg( + arrObj, opName[toGrid], pyutil::GridTraits::name(), + /*argIdx=*/1, "numpy.ndarray"); + +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + mArray = arrayObj.get_data(); +#else + mArray = PyArray_DATA(reinterpret_cast(arrayObj.ptr())); +#endif + + mArrayTypeName = arrayTypeName(arrayObj); + mArrayTypeId = arrayTypeId(arrayObj); + mArrayDims = arrayDimensions(arrayObj); + + mTolerance = extractValueArg(tolObj, opName[toGrid], 2); + + // Compute the bounding box of the region of the grid that is to be copied from or to. + Coord bboxMax = origin; + for (size_t n = 0, N = std::min(mArrayDims.size(), 3); n < N; ++n) { + bboxMax[n] += int(mArrayDims[n]) - 1; + } + mBBox.reset(origin, bboxMax); + } + virtual ~CopyOpBase() {} + + void operator()() const + { + try { + if (mToGrid) { + copyFromArray(); // copy data from the array to the grid + } else { + copyToArray(); // copy data from the grid to the array + } + } catch (openvdb::TypeError&) { + PyErr_Format(PyExc_TypeError, + "unsupported NumPy data type %s", mArrayTypeName.c_str()); + boost::python::throw_error_already_set(); + } + } + +protected: + virtual void validate() const = 0; + virtual void copyFromArray() const = 0; + virtual void copyToArray() const = 0; + + template + void fromArray() const + { + validate(); + tools::Dense valArray(mBBox, static_cast(mArray)); + tools::copyFromDense(valArray, *mGrid, mTolerance); + } + + template + void toArray() const + { + validate(); + tools::Dense valArray(mBBox, static_cast(mArray)); + tools::copyToDense(*mGrid, valArray); + } + + + bool mToGrid; // if true, copy from the array to the grid, else vice-versa + void* mArray; + GridType* mGrid; + DtId mArrayTypeId; + ArrayDimVec mArrayDims; + std::string mArrayTypeName; + CoordBBox mBBox; + ValueT mTolerance; +}; // class CopyOpBase + + +// Helper subclass that can be specialized for various grid and NumPy array types +template class CopyOp: public CopyOpBase {}; + +// Specialization for scalar grids +template +class CopyOp: public CopyOpBase +{ +public: + CopyOp(bool toGrid, GridType& grid, py::object arrObj, py::object coordObj, + py::object tolObj = py::object(zeroVal())): + CopyOpBase(toGrid, grid, arrObj, coordObj, tolObj) + { + } + +protected: + void validate() const override + { + if (this->mArrayDims.size() != 3) { + std::ostringstream os; + os << "expected 3-dimensional array, found " + << this->mArrayDims.size() << "-dimensional array"; + PyErr_SetString(PyExc_ValueError, os.str().c_str()); + boost::python::throw_error_already_set(); + } + } + +#ifdef __clang__ + // Suppress "enum value not explicitly handled" warnings + PRAGMA(clang diagnostic push) + PRAGMA(clang diagnostic ignored "-Wswitch-enum") +#endif + + void copyFromArray() const override + { + switch (this->mArrayTypeId) { + case DtId::FLOAT: this->template fromArray::type>(); break; + case DtId::DOUBLE:this->template fromArray::type>();break; + case DtId::BOOL: this->template fromArray::type>(); break; + case DtId::INT16: this->template fromArray::type>(); break; + case DtId::INT32: this->template fromArray::type>(); break; + case DtId::INT64: this->template fromArray::type>(); break; + case DtId::UINT32:this->template fromArray::type>();break; + case DtId::UINT64:this->template fromArray::type>();break; + default: throw openvdb::TypeError(); break; + } + } + + void copyToArray() const override + { + switch (this->mArrayTypeId) { + case DtId::FLOAT: this->template toArray::type>(); break; + case DtId::DOUBLE: this->template toArray::type>(); break; + case DtId::BOOL: this->template toArray::type>(); break; + case DtId::INT16: this->template toArray::type>(); break; + case DtId::INT32: this->template toArray::type>(); break; + case DtId::INT64: this->template toArray::type>(); break; + case DtId::UINT32: this->template toArray::type>(); break; + case DtId::UINT64: this->template toArray::type>(); break; + default: throw openvdb::TypeError(); break; + } + } + +#ifdef __clang__ + PRAGMA(clang diagnostic pop) +#endif + +}; // class CopyOp + +// Specialization for Vec3 grids +template +class CopyOp: public CopyOpBase +{ +public: + CopyOp(bool toGrid, GridType& grid, py::object arrObj, py::object coordObj, + py::object tolObj = py::object(zeroVal())): + CopyOpBase(toGrid, grid, arrObj, coordObj, tolObj) + { + } + +protected: + void validate() const override + { + if (this->mArrayDims.size() != 4) { + std::ostringstream os; + os << "expected 4-dimensional array, found " + << this->mArrayDims.size() << "-dimensional array"; + PyErr_SetString(PyExc_ValueError, os.str().c_str()); + boost::python::throw_error_already_set(); + } + if (this->mArrayDims[3] != 3) { + std::ostringstream os; + os << "expected " << this->mArrayDims[0] << "x" << this->mArrayDims[1] + << "x" << this->mArrayDims[2] << "x3 array, found " << this->mArrayDims[0] + << "x" << this->mArrayDims[1] << "x" << this->mArrayDims[2] + << "x" << this->mArrayDims[3] << " array"; + PyErr_SetString(PyExc_ValueError, os.str().c_str()); + boost::python::throw_error_already_set(); + } + } + +#ifdef __clang__ + // Suppress "enum value not explicitly handled" warnings + PRAGMA(clang diagnostic push) + PRAGMA(clang diagnostic ignored "-Wswitch-enum") +#endif + + void copyFromArray() const override + { + switch (this->mArrayTypeId) { + case DtId::FLOAT: + this->template fromArray::type>>(); break; + case DtId::DOUBLE: + this->template fromArray::type>>(); break; + case DtId::BOOL: + this->template fromArray::type>>(); break; + case DtId::INT16: + this->template fromArray::type>>(); break; + case DtId::INT32: + this->template fromArray::type>>(); break; + case DtId::INT64: + this->template fromArray::type>>(); break; + case DtId::UINT32: + this->template fromArray::type>>(); break; + case DtId::UINT64: + this->template fromArray::type>>(); break; + default: throw openvdb::TypeError(); break; + } + } + + void copyToArray() const override + { + switch (this->mArrayTypeId) { + case DtId::FLOAT: + this->template toArray::type>>(); break; + case DtId::DOUBLE: + this->template toArray::type>>(); break; + case DtId::BOOL: + this->template toArray::type>>(); break; + case DtId::INT16: + this->template toArray::type>>(); break; + case DtId::INT32: + this->template toArray::type>>(); break; + case DtId::INT64: + this->template toArray::type>>(); break; + case DtId::UINT32: + this->template toArray::type>>(); break; + case DtId::UINT64: + this->template toArray::type>>(); break; + default: throw openvdb::TypeError(); break; + } + } + +#ifdef __clang__ + PRAGMA(clang diagnostic pop) +#endif + +}; // class CopyOp + + +template +inline void +copyFromArray(GridType& grid, py::object arrayObj, py::object coordObj, py::object toleranceObj) +{ + using ValueT = typename GridType::ValueType; + CopyOp::Size> + op(/*toGrid=*/true, grid, arrayObj, coordObj, toleranceObj); + op(); +} + + +template +inline void +copyToArray(GridType& grid, py::object arrayObj, py::object coordObj) +{ + using ValueT = typename GridType::ValueType; + CopyOp::Size> + op(/*toGrid=*/false, grid, arrayObj, coordObj); + op(); +} + + +template<> +inline void +copyFromArray(points::PointDataGrid& /*grid*/, py::object /*arrayObj*/, + py::object /*coordObj*/, py::object /*toleranceObj*/) +{ + PyErr_SetString(PyExc_NotImplementedError, + "copying NumPy arrays for PointDataGrids is not supported"); + boost::python::throw_error_already_set(); +} + + +template<> +inline void +copyToArray(points::PointDataGrid& /*grid*/, py::object /*arrayObj*/, py::object /*coordObj*/) +{ + PyErr_SetString(PyExc_NotImplementedError, + "copying NumPy arrays for PointDataGrids is not supported"); + boost::python::throw_error_already_set(); +} + + +#endif // defined(PY_OPENVDB_USE_NUMPY) + + +//////////////////////////////////////// + + +#ifndef PY_OPENVDB_USE_NUMPY + +template +inline typename GridType::Ptr +meshToLevelSet(py::object, py::object, py::object, py::object, py::object) +{ + PyErr_SetString(PyExc_NotImplementedError, "this module was built without NumPy support"); + boost::python::throw_error_already_set(); + return typename GridType::Ptr(); +} + +template +inline py::object +volumeToQuadMesh(const GridType&, py::object) +{ + PyErr_SetString(PyExc_NotImplementedError, "this module was built without NumPy support"); + boost::python::throw_error_already_set(); + return py::object(); +} + +template +inline py::object +volumeToMesh(const GridType&, py::object, py::object) +{ + PyErr_SetString(PyExc_NotImplementedError, "this module was built without NumPy support"); + boost::python::throw_error_already_set(); + return py::object(); +} + +#else // if defined(PY_OPENVDB_USE_NUMPY) + +// Helper class for meshToLevelSet() +template +struct CopyVecOp { + void operator()(const void* srcPtr, DstT* dst, size_t count) { + const SrcT* src = static_cast(srcPtr); + for (size_t i = count; i > 0; --i, ++src, ++dst) { + *dst = static_cast(*src); + } + } +}; +// Partial specialization for source and destination arrays of the same type +template +struct CopyVecOp { + void operator()(const void* srcPtr, T* dst, size_t count) { + const T* src = static_cast(srcPtr); + ::memcpy(dst, src, count * sizeof(T)); + } +}; + + +// Helper function for use with meshToLevelSet() to copy vectors of various types +// and sizes from NumPy arrays to STL vectors +template +inline void +copyVecArray(NumPyArrayType& arrayObj, std::vector& vec) +{ + using ValueT = typename VecT::ValueType; + + // Get the input array dimensions. + const auto dims = arrayDimensions(arrayObj); + const size_t M = dims.empty() ? 0 : dims[0]; + const size_t N = VecT().numElements(); + if (M == 0 || N == 0) return; + + // Preallocate the output vector. + vec.resize(M); + + // Copy values from the input array to the output vector (with type conversion, if necessary). +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + const void* src = arrayObj.get_data(); +#else + PyArrayObject* arrayObjPtr = reinterpret_cast(arrayObj.ptr()); + const void* src = PyArray_DATA(arrayObjPtr); +#endif + ValueT* dst = &vec[0][0]; + switch (arrayTypeId(arrayObj)) { + case DtId::FLOAT: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::DOUBLE: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::INT16: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::INT32: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::INT64: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::UINT32: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + case DtId::UINT64: CopyVecOp::type, ValueT>()(src, dst, M*N); break; + default: break; + } +} + + +/// @brief Given NumPy arrays of points, triangle indices and quad indices, +/// call tools::meshToLevelSet() to generate a level set grid. +template +inline typename GridType::Ptr +meshToLevelSet(py::object pointsObj, py::object trianglesObj, py::object quadsObj, + py::object xformObj, py::object halfWidthObj) +{ + struct Local { + // Return the name of the Python grid method (for use in error messages). + static const char* methodName() { return "createLevelSetFromPolygons"; } + + // Raise a Python exception if the given NumPy array does not have dimensions M x N + // or does not have an integer or floating-point data type. + static void validate2DNumPyArray(NumPyArrayType arrayObj, + const size_t N, const char* desiredType) + { + const auto dims = arrayDimensions(arrayObj); + + bool wrongArrayType = false; + // Check array dimensions. + if (dims.size() != 2 || dims[1] != N) { + wrongArrayType = true; + } else { + // Check array data type. + switch (arrayTypeId(arrayObj)) { + case DtId::FLOAT: case DtId::DOUBLE: //case DtId::HALF: + case DtId::INT16: case DtId::INT32: case DtId::INT64: + case DtId::UINT32: case DtId::UINT64: break; + default: wrongArrayType = true; break; + } + } + if (wrongArrayType) { + // Generate an error message and raise a Python TypeError. + std::ostringstream os; + os << "expected N x 3 numpy.ndarray of " << desiredType << ", found "; + switch (dims.size()) { + case 0: os << "zero-dimensional"; break; + case 1: os << "one-dimensional"; break; + default: + os << dims[0]; + for (size_t i = 1; i < dims.size(); ++i) { os << " x " << dims[i]; } + break; + } + os << " " << arrayTypeName(arrayObj) << " array as argument 1 to " + << pyutil::GridTraits::name() << "." << methodName() << "()"; + PyErr_SetString(PyExc_TypeError, os.str().c_str()); + py::throw_error_already_set(); + } + } + }; + + // Extract the narrow band half width from the arguments to this method. + const float halfWidth = extractValueArg( + halfWidthObj, Local::methodName(), /*argIdx=*/5, "float"); + + // Extract the transform from the arguments to this method. + math::Transform::Ptr xform = math::Transform::createLinearTransform(); + if (!xformObj.is_none()) { + xform = extractValueArg( + xformObj, Local::methodName(), /*argIdx=*/4, "Transform"); + } + + // Extract the list of mesh vertices from the arguments to this method. + std::vector points; + if (!pointsObj.is_none()) { + // Extract a reference to (not a copy of) a NumPy array argument, + // or throw an exception if the argument is not a NumPy array object. + auto arrayObj = extractValueArg( + pointsObj, Local::methodName(), /*argIdx=*/1, "numpy.ndarray"); + + // Throw an exception if the array has the wrong type or dimensions. + Local::validate2DNumPyArray(arrayObj, /*N=*/3, /*desiredType=*/"float"); + + // Copy values from the array to the vector. + copyVecArray(arrayObj, points); + } + + // Extract the list of triangle indices from the arguments to this method. + std::vector triangles; + if (!trianglesObj.is_none()) { + auto arrayObj = extractValueArg( + trianglesObj, Local::methodName(), /*argIdx=*/2, "numpy.ndarray"); + Local::validate2DNumPyArray(arrayObj, /*N=*/3, /*desiredType=*/"int"); + copyVecArray(arrayObj, triangles); + } + + // Extract the list of quad indices from the arguments to this method. + std::vector quads; + if (!quadsObj.is_none()) { + auto arrayObj = extractValueArg( + quadsObj, Local::methodName(), /*argIdx=*/3, "numpy.ndarray"); + Local::validate2DNumPyArray(arrayObj, /*N=*/4, /*desiredType=*/"int"); + copyVecArray(arrayObj, quads); + } + + // Generate and return a level set grid. + return tools::meshToLevelSet(*xform, points, triangles, quads, halfWidth); +} + + +template +inline py::object +volumeToQuadMesh(const GridType& grid, py::object isovalueObj) +{ + const double isovalue = pyutil::extractArg( + isovalueObj, "convertToQuads", /*className=*/nullptr, /*argIdx=*/2, "float"); + + // Mesh the input grid and populate lists of mesh vertices and face vertex indices. + std::vector points; + std::vector quads; + tools::volumeToMesh(grid, points, quads, isovalue); + +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + const py::object own; + auto dtype = py::numpy::dtype::get_builtin(); + auto shape = py::make_tuple(points.size(), 3); + auto stride = py::make_tuple(3 * sizeof(Vec3s::value_type), sizeof(Vec3s::value_type)); + // Create a deep copy of the array (because the point vector will be destroyed + // when this function returns). + auto pointArrayObj = py::numpy::from_data(points.data(), dtype, shape, stride, own).copy(); + + dtype = py::numpy::dtype::get_builtin(); + shape = py::make_tuple(quads.size(), 4); + stride = py::make_tuple(4 * sizeof(Vec4I::value_type), sizeof(Vec4I::value_type)); + auto quadArrayObj = py::numpy::from_data( + quads.data(), dtype, shape, stride, own).copy(); // deep copy +#else // !defined PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + // Copy vertices into an N x 3 NumPy array. + py::object pointArrayObj = py::numeric::array(py::list(), "float32"); + if (!points.empty()) { + npy_intp dims[2] = { npy_intp(points.size()), 3 }; + // Construct a NumPy array that wraps the point vector. + if (PyArrayObject* arrayObj = reinterpret_cast( + PyArray_SimpleNewFromData(/*nd=*/2, dims, NPY_FLOAT, &points[0]))) + { + // Create a deep copy of the array (because the point vector will be + // destroyed when this function returns). + pointArrayObj = copyNumPyArray(arrayObj, NPY_CORDER); + } + } + + // Copy face indices into an N x 4 NumPy array. + py::object quadArrayObj = py::numeric::array(py::list(), "uint32"); + if (!quads.empty()) { + npy_intp dims[2] = { npy_intp(quads.size()), 4 }; + if (PyArrayObject* arrayObj = reinterpret_cast( + PyArray_SimpleNewFromData(/*dims=*/2, dims, NPY_UINT32, &quads[0]))) + { + quadArrayObj = copyNumPyArray(arrayObj, NPY_CORDER); + } + } +#endif // PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + + return py::make_tuple(pointArrayObj, quadArrayObj); +} + + +template +inline py::object +volumeToMesh(const GridType& grid, py::object isovalueObj, py::object adaptivityObj) +{ + const double isovalue = pyutil::extractArg( + isovalueObj, "convertToPolygons", /*className=*/nullptr, /*argIdx=*/2, "float"); + const double adaptivity = pyutil::extractArg( + adaptivityObj, "convertToPolygons", /*className=*/nullptr, /*argIdx=*/3, "float"); + + // Mesh the input grid and populate lists of mesh vertices and face vertex indices. + std::vector points; + std::vector triangles; + std::vector quads; + tools::volumeToMesh(grid, points, triangles, quads, isovalue, adaptivity); + +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + const py::object own; + auto dtype = py::numpy::dtype::get_builtin(); + auto shape = py::make_tuple(points.size(), 3); + auto stride = py::make_tuple(3 * sizeof(Vec3s::value_type), sizeof(Vec3s::value_type)); + // Create a deep copy of the array (because the point vector will be destroyed + // when this function returns). + auto pointArrayObj = py::numpy::from_data(points.data(), dtype, shape, stride, own).copy(); + + dtype = py::numpy::dtype::get_builtin(); + shape = py::make_tuple(triangles.size(), 3); + stride = py::make_tuple(3 * sizeof(Vec3I::value_type), sizeof(Vec3I::value_type)); + auto triangleArrayObj = py::numpy::from_data( + triangles.data(), dtype, shape, stride, own).copy(); // deep copy + + dtype = py::numpy::dtype::get_builtin(); + shape = py::make_tuple(quads.size(), 4); + stride = py::make_tuple(4 * sizeof(Vec4I::value_type), sizeof(Vec4I::value_type)); + auto quadArrayObj = py::numpy::from_data( + quads.data(), dtype, shape, stride, own).copy(); // deep copy +#else // !defined PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + // Copy vertices into an N x 3 NumPy array. + py::object pointArrayObj = py::numeric::array(py::list(), "float32"); + if (!points.empty()) { + npy_intp dims[2] = { npy_intp(points.size()), 3 }; + // Construct a NumPy array that wraps the point vector. + if (PyArrayObject* arrayObj = reinterpret_cast( + PyArray_SimpleNewFromData(/*dims=*/2, dims, NPY_FLOAT, &points[0]))) + { + // Create a deep copy of the array (because the point vector will be + // destroyed when this function returns). + pointArrayObj = copyNumPyArray(arrayObj, NPY_CORDER); + } + } + + // Copy triangular face indices into an N x 3 NumPy array. + py::object triangleArrayObj = py::numeric::array(py::list(), "uint32"); + if (!triangles.empty()) { + npy_intp dims[2] = { npy_intp(triangles.size()), 3 }; + if (PyArrayObject* arrayObj = reinterpret_cast( + PyArray_SimpleNewFromData(/*dims=*/2, dims, NPY_UINT32, &triangles[0]))) + { + triangleArrayObj = copyNumPyArray(arrayObj, NPY_CORDER); + } + } + + // Copy quadrilateral face indices into an N x 4 NumPy array. + py::object quadArrayObj = py::numeric::array(py::list(), "uint32"); + if (!quads.empty()) { + npy_intp dims[2] = { npy_intp(quads.size()), 4 }; + if (PyArrayObject* arrayObj = reinterpret_cast( + PyArray_SimpleNewFromData(/*dims=*/2, dims, NPY_UINT32, &quads[0]))) + { + quadArrayObj = copyNumPyArray(arrayObj, NPY_CORDER); + } + } +#endif // PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + + return py::make_tuple(pointArrayObj, triangleArrayObj, quadArrayObj); +} + +#endif // defined(PY_OPENVDB_USE_NUMPY) + + +//////////////////////////////////////// + + +template +inline void +applyMap(const char* methodName, GridType& grid, py::object funcObj) +{ + using ValueT = typename GridType::ValueType; + + for (IterType it = grid.tree().template begin(); it; ++it) { + // Evaluate the functor. + py::object result = funcObj(*it); + + // Verify that the result is of type GridType::ValueType. + py::extract val(result); + if (!val.check()) { + PyErr_Format(PyExc_TypeError, + "expected callable argument to %s.%s() to return %s, found %s", + pyutil::GridTraits::name(), + methodName, + openvdb::typeNameAsString(), + pyutil::className(result).c_str()); + py::throw_error_already_set(); + } + + it.setValue(val()); + } +} + + +template +inline void +mapOn(GridType& grid, py::object funcObj) +{ + applyMap("mapOn", grid, funcObj); +} + + +template +inline void +mapOff(GridType& grid, py::object funcObj) +{ + applyMap("mapOff", grid, funcObj); +} + + +template +inline void +mapAll(GridType& grid, py::object funcObj) +{ + applyMap("mapAll", grid, funcObj); +} + + +//////////////////////////////////////// + + +template +struct TreeCombineOp +{ + using TreeT = typename GridType::TreeType; + using ValueT = typename GridType::ValueType; + + TreeCombineOp(py::object _op): op(_op) {} + void operator()(const ValueT& a, const ValueT& b, ValueT& result) + { + py::object resultObj = op(a, b); + + py::extract val(resultObj); + if (!val.check()) { + PyErr_Format(PyExc_TypeError, + "expected callable argument to %s.combine() to return %s, found %s", + pyutil::GridTraits::name(), + openvdb::typeNameAsString(), + pyutil::className(resultObj).c_str()); + py::throw_error_already_set(); + } + + result = val(); + } + py::object op; +}; + + +template +inline void +combine(GridType& grid, py::object otherGridObj, py::object funcObj) +{ + using GridPtr = typename GridType::Ptr; + GridPtr otherGrid = extractValueArg(otherGridObj, + "combine", 1, pyutil::GridTraits::name()); + TreeCombineOp op(funcObj); + grid.tree().combine(otherGrid->tree(), op, /*prune=*/true); +} + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +createLevelSetSphere(float radius, const openvdb::Vec3f& center, float voxelSize, float halfWidth) +{ + return tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); +} + + +//////////////////////////////////////// + + +template class IterWrap; // forward declaration + +// +// Type traits for various iterators +// +template struct IterTraits +{ + // IterT the type of the iterator + // name() function returning the base name of the iterator type (e.g., "ValueOffIter") + // descr() function returning a string describing the iterator + // begin() function returning a begin iterator for a given grid +}; + +template struct IterTraits +{ + using IterT = typename GridT::ValueOnCIter; + static std::string name() { return "ValueOnCIter"; } + static std::string descr() + { + return std::string("Read-only iterator over the active values (tile and voxel)\nof a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->cbeginValueOn()); + } +}; // IterTraits + +template struct IterTraits +{ + using IterT = typename GridT::ValueOffCIter; + static std::string name() { return "ValueOffCIter"; } + static std::string descr() + { + return std::string("Read-only iterator over the inactive values (tile and voxel)\nof a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->cbeginValueOff()); + } +}; // IterTraits + +template struct IterTraits +{ + using IterT = typename GridT::ValueAllCIter; + static std::string name() { return "ValueAllCIter"; } + static std::string descr() + { + return std::string("Read-only iterator over all tile and voxel values of a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->cbeginValueAll()); + } +}; // IterTraits + +template struct IterTraits +{ + using IterT = typename GridT::ValueOnIter; + static std::string name() { return "ValueOnIter"; } + static std::string descr() + { + return std::string("Read/write iterator over the active values (tile and voxel)\nof a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->beginValueOn()); + } +}; // IterTraits + +template struct IterTraits +{ + using IterT = typename GridT::ValueOffIter; + static std::string name() { return "ValueOffIter"; } + static std::string descr() + { + return std::string("Read/write iterator over the inactive values (tile and voxel)\nof a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->beginValueOff()); + } +}; // IterTraits + +template struct IterTraits +{ + using IterT = typename GridT::ValueAllIter; + static std::string name() { return "ValueAllIter"; } + static std::string descr() + { + return std::string("Read/write iterator over all tile and voxel values of a ") + + pyutil::GridTraits::type>::name(); + } + static IterWrap begin(typename GridT::Ptr g) + { + return IterWrap(g, g->beginValueAll()); + } +}; // IterTraits + + +//////////////////////////////////////// + + +// Helper class to modify a grid through a non-const iterator +template +struct IterItemSetter +{ + using ValueT = typename GridT::ValueType; + static void setValue(const IterT& iter, const ValueT& val) { iter.setValue(val); } + static void setActive(const IterT& iter, bool on) { iter.setActiveState(on); } +}; + +// Partial specialization for const iterators +template +struct IterItemSetter +{ + using ValueT = typename GridT::ValueType; + static void setValue(const IterT&, const ValueT&) + { + PyErr_SetString(PyExc_AttributeError, "can't set attribute 'value'"); + py::throw_error_already_set(); + } + static void setActive(const IterT&, bool /*on*/) + { + PyErr_SetString(PyExc_AttributeError, "can't set attribute 'active'"); + py::throw_error_already_set(); + } +}; + + +/// @brief Value returned by the next() method of a grid's value iterator +/// @details This class allows both dictionary-style (e.g., items["depth"]) and +/// attribute access (e.g., items.depth) to the items returned by an iterator. +/// @todo Create a reusable base class for "named dicts" like this? +template +class IterValueProxy +{ +public: + using GridT = _GridT; + using IterT = _IterT; + using ValueT = typename GridT::ValueType; + using SetterT = IterItemSetter; + + IterValueProxy(typename GridT::ConstPtr grid, const IterT& iter): mGrid(grid), mIter(iter) {} + + IterValueProxy copy() const { return *this; } + + typename GridT::ConstPtr parent() const { return mGrid; } + + ValueT getValue() const { return *mIter; } + bool getActive() const { return mIter.isValueOn(); } + Index getDepth() const { return mIter.getDepth(); } + Coord getBBoxMin() const { return mIter.getBoundingBox().min(); } + Coord getBBoxMax() const { return mIter.getBoundingBox().max(); } + Index64 getVoxelCount() const { return mIter.getVoxelCount(); } + + void setValue(const ValueT& val) { SetterT::setValue(mIter, val); } + void setActive(bool on) { SetterT::setActive(mIter, on); } + + /// Return this dictionary's keys as a list of C strings. + static const char* const * keys() + { + static const char* const sKeys[] = { + "value", "active", "depth", "min", "max", "count", nullptr + }; + return sKeys; + } + + /// Return @c true if the given string is a valid key. + static bool hasKey(const std::string& key) + { + for (int i = 0; keys()[i] != nullptr; ++i) { + if (key == keys()[i]) return true; + } + return false; + } + + /// Return this dictionary's keys as a Python list of Python strings. + static py::list getKeys() + { + py::list keyList; + for (int i = 0; keys()[i] != nullptr; ++i) keyList.append(keys()[i]); + return keyList; + } + + /// @brief Return the value for the given key. + /// @throw KeyError if the key is invalid + py::object getItem(py::object keyObj) const + { + py::extract x(keyObj); + if (x.check()) { + const std::string key = x(); + if (key == "value") return py::object(this->getValue()); + else if (key == "active") return py::object(this->getActive()); + else if (key == "depth") return py::object(this->getDepth()); + else if (key == "min") return py::object(this->getBBoxMin()); + else if (key == "max") return py::object(this->getBBoxMax()); + else if (key == "count") return py::object(this->getVoxelCount()); + } + PyErr_SetObject(PyExc_KeyError, ("%s" % keyObj.attr("__repr__")()).ptr()); + py::throw_error_already_set(); + return py::object(); + } + + /// @brief Set the value for the given key. + /// @throw KeyError if the key is invalid + /// @throw AttributeError if the key refers to a read-only item + void setItem(py::object keyObj, py::object valObj) + { + py::extract x(keyObj); + if (x.check()) { + const std::string key = x(); + if (key == "value") { + this->setValue(py::extract(valObj)); return; + } else if (key == "active") { + this->setActive(py::extract(valObj)); return; + } else if (this->hasKey(key)) { + PyErr_SetObject(PyExc_AttributeError, + ("can't set attribute '%s'" % keyObj.attr("__repr__")()).ptr()); + py::throw_error_already_set(); + } + } + PyErr_SetObject(PyExc_KeyError, + ("'%s'" % keyObj.attr("__repr__")()).ptr()); + py::throw_error_already_set(); + } + + bool operator==(const IterValueProxy& other) const + { + return (other.getActive() == this->getActive() + && other.getDepth() == this->getDepth() + && math::isExactlyEqual(other.getValue(), this->getValue()) + && other.getBBoxMin() == this->getBBoxMin() + && other.getBBoxMax() == this->getBBoxMax() + && other.getVoxelCount() == this->getVoxelCount()); + } + bool operator!=(const IterValueProxy& other) const { return !(*this == other); } + + /// Print this dictionary to a stream. + std::ostream& put(std::ostream& os) const + { + // valuesAsStrings = ["%s: %s" % key, repr(this[key]) for key in this.keys()] + py::list valuesAsStrings; + for (int i = 0; this->keys()[i] != nullptr; ++i) { + py::str + key(this->keys()[i]), + val(this->getItem(key).attr("__repr__")()); + valuesAsStrings.append("'%s': %s" % py::make_tuple(key, val)); + } + // print ", ".join(valuesAsStrings) + py::object joined = py::str(", ").attr("join")(valuesAsStrings); + std::string s = py::extract(joined); + os << "{" << s << "}"; + return os; + } + /// Return a string describing this dictionary. + std::string info() const { std::ostringstream os; os << *this; return os.str(); } + +private: + // To keep the iterator's grid from being deleted (leaving the iterator dangling), + // store a shared pointer to the grid. + const typename GridT::ConstPtr mGrid; + const IterT mIter; // the iterator may not be incremented +}; // class IterValueProxy + + +template +inline std::ostream& +operator<<(std::ostream& os, const IterValueProxy& iv) { return iv.put(os); } + + +//////////////////////////////////////// + + +/// Wrapper for a grid's value iterator classes +template +class IterWrap +{ +public: + using GridT = _GridT; + using IterT = _IterT; + using ValueT = typename GridT::ValueType; + using IterValueProxyT = IterValueProxy; + using Traits = IterTraits; + + IterWrap(typename GridT::ConstPtr grid, const IterT& iter): mGrid(grid), mIter(iter) {} + + typename GridT::ConstPtr parent() const { return mGrid; } + + /// Return an IterValueProxy for the current iterator position. + IterValueProxyT next() + { + if (!mIter) { + PyErr_SetString(PyExc_StopIteration, "no more values"); + py::throw_error_already_set(); + } + IterValueProxyT result(mGrid, mIter); + ++mIter; + return result; + } + + static py::object returnSelf(const py::object& obj) { return obj; } + + /// @brief Define a Python wrapper class for this C++ class and another for + /// the IterValueProxy class returned by iterators of this type. + static void wrap() + { + const std::string + gridClassName = pyutil::GridTraits::type>::name(), + iterClassName = /*gridClassName +*/ Traits::name(), + valueClassName = /*gridClassName +*/ "Value"; + + py::class_( + iterClassName.c_str(), + /*docstring=*/Traits::descr().c_str(), + /*ctor=*/py::no_init) // can only be instantiated from C++, not from Python + + .add_property("parent", &IterWrap::parent, + ("the " + gridClassName + " over which to iterate").c_str()) + + .def("next", &IterWrap::next, ("next() -> " + valueClassName).c_str()) + .def("__next__", &IterWrap::next, ("__next__() -> " + valueClassName).c_str()) + .def("__iter__", &returnSelf); + + py::class_( + valueClassName.c_str(), + /*docstring=*/("Proxy for a tile or voxel value in a " + gridClassName).c_str(), + /*ctor=*/py::no_init) // can only be instantiated from C++, not from Python + + .def("copy", &IterValueProxyT::copy, + ("copy() -> " + valueClassName + "\n\n" + "Return a shallow copy of this value, i.e., one that shares\n" + "its data with the original.").c_str()) + + .add_property("parent", &IterValueProxyT::parent, + ("the " + gridClassName + " to which this value belongs").c_str()) + + .def("__str__", &IterValueProxyT::info) + .def("__repr__", &IterValueProxyT::info) + + .def("__eq__", &IterValueProxyT::operator==) + .def("__ne__", &IterValueProxyT::operator!=) + + .add_property("value", &IterValueProxyT::getValue, &IterValueProxyT::setValue, + "value of this tile or voxel") + .add_property("active", &IterValueProxyT::getActive, &IterValueProxyT::setActive, + "active state of this tile or voxel") + .add_property("depth", &IterValueProxyT::getDepth, + "tree depth at which this value is stored") + .add_property("min", &IterValueProxyT::getBBoxMin, + "lower bound of the axis-aligned bounding box of this tile or voxel") + .add_property("max", &IterValueProxyT::getBBoxMax, + "upper bound of the axis-aligned bounding box of this tile or voxel") + .add_property("count", &IterValueProxyT::getVoxelCount, + "number of voxels spanned by this value") + + .def("keys", &IterValueProxyT::getKeys, + "keys() -> list\n\n" + "Return a list of keys for this tile or voxel.") + .staticmethod("keys") + .def("__contains__", &IterValueProxyT::hasKey, + "__contains__(key) -> bool\n\n" + "Return True if the given key exists.") + .staticmethod("__contains__") + .def("__getitem__", &IterValueProxyT::getItem, + "__getitem__(key) -> value\n\n" + "Return the value of the item with the given key.") + .def("__setitem__", &IterValueProxyT::getItem, + "__setitem__(key, value)\n\n" + "Set the value of the item with the given key."); + } + +private: + // To keep this iterator's grid from being deleted, leaving the iterator dangling, + // store a shared pointer to the grid. + const typename GridT::ConstPtr mGrid; + IterT mIter; +}; // class IterWrap + + +//////////////////////////////////////// + + +template +struct PickleSuite: public py::pickle_suite +{ + using GridPtrT = typename GridT::Ptr; + + /// Return @c true, indicating that this pickler preserves a Grid's __dict__. + static bool getstate_manages_dict() { return true; } + + /// Return a tuple representing the state of the given Grid. + static py::tuple getstate(py::object gridObj) + { + py::tuple state; + + // Extract a Grid from the Python object. + GridPtrT grid; + py::extract x(gridObj); + if (x.check()) grid = x(); + + if (grid) { + // Serialize the Grid to a string. + std::ostringstream ostr(std::ios_base::binary); + { + openvdb::io::Stream strm(ostr); + strm.setGridStatsMetadataEnabled(false); + strm.write(openvdb::GridPtrVec(1, grid)); + } + // Construct a state tuple comprising the Python object's __dict__ + // and the serialized Grid. +#if PY_MAJOR_VERSION >= 3 + // Convert the byte string to a "bytes" sequence. + const std::string s = ostr.str(); + py::object bytesObj = pyutil::pyBorrow(PyBytes_FromStringAndSize(s.data(), s.size())); +#else + py::str bytesObj(ostr.str()); +#endif + state = py::make_tuple(gridObj.attr("__dict__"), bytesObj); + } + return state; + } + + /// Restore the given Grid to a saved state. + static void setstate(py::object gridObj, py::object stateObj) + { + GridPtrT grid; + { + py::extract x(gridObj); + if (x.check()) grid = x(); + } + if (!grid) return; + + py::tuple state; + { + py::extract x(stateObj); + if (x.check()) state = x(); + } + bool badState = (py::len(state) != 2); + + if (!badState) { + // Restore the object's __dict__. + py::extract x(state[0]); + if (x.check()) { + py::dict d = py::extract(gridObj.attr("__dict__"))(); + d.update(x()); + } else { + badState = true; + } + } + + std::string serialized; + if (!badState) { + // Extract the sequence containing the serialized Grid. + py::object bytesObj = state[1]; +#if PY_MAJOR_VERSION >= 3 + badState = true; + if (PyBytes_Check(bytesObj.ptr())) { + // Convert the "bytes" sequence to a byte string. + char* buf = nullptr; + Py_ssize_t length = 0; + if (-1 != PyBytes_AsStringAndSize(bytesObj.ptr(), &buf, &length)) { + if (buf != nullptr && length > 0) { + serialized.assign(buf, buf + length); + badState = false; + } + } + } +#else + py::extract x(bytesObj); + if (x.check()) serialized = x(); + else badState = true; +#endif + } + + if (badState) { + PyErr_SetObject(PyExc_ValueError, +#if PY_MAJOR_VERSION >= 3 + ("expected (dict, bytes) tuple in call to __setstate__; found %s" +#else + ("expected (dict, str) tuple in call to __setstate__; found %s" +#endif + % stateObj.attr("__repr__")()).ptr()); + py::throw_error_already_set(); + } + + // Restore the internal state of the C++ object. + GridPtrVecPtr grids; + { + std::istringstream istr(serialized, std::ios_base::binary); + io::Stream strm(istr); + grids = strm.getGrids(); // (note: file-level metadata is ignored) + } + if (grids && !grids->empty()) { + if (GridPtrT savedGrid = gridPtrCast((*grids)[0])) { + grid->MetaMap::operator=(*savedGrid); ///< @todo add a Grid::setMetadata() method? + grid->setTransform(savedGrid->transformPtr()); + grid->setTree(savedGrid->treePtr()); + } + } + } +}; // struct PickleSuite + + +//////////////////////////////////////// + + +/// Create a Python wrapper for a particular template instantiation of Grid. +template +inline void +exportGrid() +{ + using ValueT = typename GridType::ValueType; + using GridPtr = typename GridType::Ptr; + using Traits = pyutil::GridTraits; + + using ValueOnCIterT = typename GridType::ValueOnCIter; + using ValueOffCIterT = typename GridType::ValueOffCIter; + using ValueAllCIterT = typename GridType::ValueAllCIter; + using ValueOnIterT = typename GridType::ValueOnIter; + using ValueOffIterT = typename GridType::ValueOffIter; + using ValueAllIterT = typename GridType::ValueAllIter; + + math::Transform::Ptr (GridType::*getTransform)() = &GridType::transformPtr; + + const std::string pyGridTypeName = Traits::name(); + const std::string defaultCtorDescr = "Initialize with a background value of " + + pyutil::str(pyGrid::getZeroValue()) + "."; + + // Define the Grid wrapper class and make it the current scope. + { + py::class_ clss( + /*classname=*/pyGridTypeName.c_str(), + /*docstring=*/(Traits::descr()).c_str(), + /*ctor=*/py::init<>(defaultCtorDescr.c_str()) + ); + + py::scope gridClassScope = clss; + + clss.def(py::init(py::args("background"), + "Initialize with the given background value.")) + + .def("copy", &pyGrid::copyGrid, + ("copy() -> " + pyGridTypeName + "\n\n" + "Return a shallow copy of this grid, i.e., a grid\n" + "that shares its voxel data with this grid.").c_str()) + .def("deepCopy", &GridType::deepCopy, + ("deepCopy() -> " + pyGridTypeName + "\n\n" + "Return a deep copy of this grid.\n").c_str()) + + .def_pickle(pyGrid::PickleSuite()) + + .def("sharesWith", &pyGrid::sharesWith, + ("sharesWith(" + pyGridTypeName + ") -> bool\n\n" + "Return True if this grid shares its voxel data with the given grid.").c_str()) + + /// @todo Any way to set a docstring for a class property? + .add_static_property("valueTypeName", &pyGrid::getValueType) + /// @todo docstring = "name of this grid's value type" + .add_static_property("zeroValue", &pyGrid::getZeroValue) + /// @todo docstring = "zero, as expressed in this grid's value type" + .add_static_property("oneValue", &pyGrid::getOneValue) + /// @todo docstring = "one, as expressed in this grid's value type" + /// @todo Is Grid.typeName ever needed? + //.add_static_property("typeName", &GridType::gridType) + /// @todo docstring = to "name of this grid's type" + + .add_property("background", + &pyGrid::getGridBackground, &pyGrid::setGridBackground, + "value of this grid's background voxels") + .add_property("name", &GridType::getName, &pyGrid::setGridName, + "this grid's name") + .add_property("creator", &GridType::getCreator, &pyGrid::setGridCreator, + "description of this grid's creator") + + .add_property("transform", getTransform, &pyGrid::setGridTransform, + "transform associated with this grid") + + .add_property("gridClass", &pyGrid::getGridClass, &pyGrid::setGridClass, + "the class of volumetric data (level set, fog volume, etc.)\nstored in this grid") + + .add_property("vectorType", &pyGrid::getVecType, &pyGrid::setVecType, + "how transforms are applied to values stored in this grid") + + .def("getAccessor", &pyGrid::getAccessor, + ("getAccessor() -> " + pyGridTypeName + "Accessor\n\n" + "Return an accessor that provides random read and write access\n" + "to this grid's voxels.").c_str()) + .def("getConstAccessor", &pyGrid::getConstAccessor, + ("getConstAccessor() -> " + pyGridTypeName + "Accessor\n\n" + "Return an accessor that provides random read-only access\n" + "to this grid's voxels.").c_str()) + + // + // Metadata + // + .add_property("metadata", &pyGrid::getAllMetadata, &pyGrid::replaceAllMetadata, + "dict of this grid's metadata\n\n" + "Setting this attribute replaces all of this grid's metadata,\n" + "but mutating it in place has no effect on the grid, since\n" + "the value of this attribute is a only a copy of the metadata.\n" + "Use either indexing or updateMetadata() to mutate metadata in place.") + .def("updateMetadata", &pyGrid::updateMetadata, + "updateMetadata(dict)\n\n" + "Add metadata to this grid, replacing any existing items\n" + "having the same names as the new items.") + + .def("addStatsMetadata", &GridType::addStatsMetadata, + "addStatsMetadata()\n\n" + "Add metadata to this grid comprising the current values\n" + "of statistics like the active voxel count and bounding box.\n" + "(This metadata is not automatically kept up-to-date with\n" + "changes to this grid.)") + .def("getStatsMetadata", &pyGrid::getStatsMetadata, + "getStatsMetadata() -> dict\n\n" + "Return a (possibly empty) dict containing just the metadata\n" + "that was added to this grid with addStatsMetadata().") + + .def("__getitem__", &pyGrid::getMetadata, + "__getitem__(name) -> value\n\n" + "Return the metadata value associated with the given name.") + .def("__setitem__", &pyGrid::setMetadata, + "__setitem__(name, value)\n\n" + "Add metadata to this grid, replacing any existing item having\n" + "the same name as the new item.") + .def("__delitem__", &pyGrid::removeMetadata, + "__delitem__(name)\n\n" + "Remove the metadata with the given name.") + .def("__contains__", &pyGrid::hasMetadata, + "__contains__(name) -> bool\n\n" + "Return True if this grid contains metadata with the given name.") + .def("__iter__", &pyGrid::getMetadataKeys, + "__iter__() -> iterator\n\n" + "Return an iterator over this grid's metadata keys.") + .def("iterkeys", &pyGrid::getMetadataKeys, + "iterkeys() -> iterator\n\n" + "Return an iterator over this grid's metadata keys.") + + .add_property("saveFloatAsHalf", + &GridType::saveFloatAsHalf, &GridType::setSaveFloatAsHalf, + "if True, write floating-point voxel values as 16-bit half floats") + + // + // Statistics + // + .def("memUsage", &GridType::memUsage, + "memUsage() -> int\n\n" + "Return the memory usage of this grid in bytes.") + + .def("evalLeafBoundingBox", &pyGrid::evalLeafBoundingBox, + "evalLeafBoundingBox() -> xyzMin, xyzMax\n\n" + "Return the coordinates of opposite corners of the axis-aligned\n" + "bounding box of all leaf nodes.") + .def("evalLeafDim", &pyGrid::evalLeafDim, + "evalLeafDim() -> x, y, z\n\n" + "Return the dimensions of the axis-aligned bounding box\n" + "of all leaf nodes.") + + .def("evalActiveVoxelBoundingBox", &pyGrid::evalActiveVoxelBoundingBox, + "evalActiveVoxelBoundingBox() -> xyzMin, xyzMax\n\n" + "Return the coordinates of opposite corners of the axis-aligned\n" + "bounding box of all active voxels.") + .def("evalActiveVoxelDim", &GridType::evalActiveVoxelDim, + "evalActiveVoxelDim() -> x, y, z\n\n" + "Return the dimensions of the axis-aligned bounding box of all\n" + "active voxels.") + + .add_property("treeDepth", &pyGrid::treeDepth, + "depth of this grid's tree from root node to leaf node") + .def("nodeLog2Dims", &pyGrid::getNodeLog2Dims, + "list of Log2Dims of the nodes of this grid's tree\n" + "in order from root to leaf") + + .def("leafCount", &pyGrid::leafCount, + "leafCount() -> int\n\n" + "Return the number of leaf nodes in this grid's tree.") + .def("nonLeafCount", &pyGrid::nonLeafCount, + "nonLeafCount() -> int\n\n" + "Return the number of non-leaf nodes in this grid's tree.") + + .def("activeVoxelCount", &GridType::activeVoxelCount, + "activeVoxelCount() -> int\n\n" + "Return the number of active voxels in this grid.") + .def("activeLeafVoxelCount", &pyGrid::activeLeafVoxelCount, + "activeLeafVoxelCount() -> int\n\n" + "Return the number of active voxels that are stored\n" + "in the leaf nodes of this grid's tree.") + + .def("evalMinMax", &pyGrid::evalMinMax, + "evalMinMax() -> min, max\n\n" + "Return the minimum and maximum active values in this grid.") + + .def("getIndexRange", &pyGrid::getIndexRange, + "getIndexRange() -> min, max\n\n" + "Return the minimum and maximum coordinates that are represented\n" + "in this grid. These might include background voxels.") + //.def("expand", &pyGrid::expandIndexRange, + // py::arg("xyz"), + // "expand(xyz)\n\n" + // "Expand this grid's index range to include the given coordinates.") + + .def("info", &pyGrid::gridInfo, + py::arg("verbosity")=1, + "info(verbosity=1) -> str\n\n" + "Return a string containing information about this grid\n" + "with a specified level of verbosity.\n") + + // + // Tools + // + .def("fill", &pyGrid::fill, + (py::arg("min"), py::arg("max"), py::arg("value"), py::arg("active")=true), + "fill(min, max, value, active=True)\n\n" + "Set all voxels within a given axis-aligned box to\n" + "a constant value (either active or inactive).") + .def("signedFloodFill", &pyGrid::signedFloodFill, + "signedFloodFill()\n\n" + "Propagate the sign from a narrow-band level set into inactive\n" + "voxels and tiles.") + + .def("copyFromArray", &pyGrid::copyFromArray, + (py::arg("array"), py::arg("ijk")=Coord(0), + py::arg("tolerance")=pyGrid::getZeroValue()), + ("copyFromArray(array, ijk=(0, 0, 0), tolerance=0)\n\n" + "Populate this grid, starting at voxel (i, j, k), with values\nfrom a " + + std::string(openvdb::VecTraits::IsVec ? "four" : "three") + + "-dimensional array. Mark voxels as inactive\n" + "if and only if their values are equal to this grid's\n" + "background value within the given tolerance.").c_str()) + .def("copyToArray", &pyGrid::copyToArray, + (py::arg("array"), py::arg("ijk")=Coord(0)), + ("copyToArray(array, ijk=(0, 0, 0))\n\nPopulate a " + + std::string(openvdb::VecTraits::IsVec ? "four" : "three") + + "-dimensional array with values\n" + "from this grid, starting at voxel (i, j, k).").c_str()) + + .def("convertToQuads", + &pyGrid::volumeToQuadMesh, + (py::arg("isovalue")=0), + "convertToQuads(isovalue=0) -> points, quads\n\n" + "Uniformly mesh a scalar grid that has a continuous isosurface\n" + "at the given isovalue. Return a NumPy array of world-space\n" + "points and a NumPy array of 4-tuples of point indices, which\n" + "specify the vertices of the quadrilaterals that form the mesh.") + .def("convertToPolygons", + &pyGrid::volumeToMesh, + (py::arg("isovalue")=0, py::arg("adaptivity")=0), + "convertToPolygons(isovalue=0, adaptivity=0) -> points, triangles, quads\n\n" + "Adaptively mesh a scalar grid that has a continuous isosurface\n" + "at the given isovalue. Return a NumPy array of world-space\n" + "points and NumPy arrays of 3- and 4-tuples of point indices,\n" + "which specify the vertices of the triangles and quadrilaterals\n" + "that form the mesh. Adaptivity can vary from 0 to 1, where 0\n" + "produces a high-polygon-count mesh that closely approximates\n" + "the isosurface, and 1 produces a lower-polygon-count mesh\n" + "with some loss of surface detail.") + .def("createLevelSetFromPolygons", + &pyGrid::meshToLevelSet, + (py::arg("points"), + py::arg("triangles")=py::object(), + py::arg("quads")=py::object(), + py::arg("transform")=py::object(), + py::arg("halfWidth")=openvdb::LEVEL_SET_HALF_WIDTH), + ("createLevelSetFromPolygons(points, triangles=None, quads=None,\n" + " transform=None, halfWidth=" + + std::to_string(openvdb::LEVEL_SET_HALF_WIDTH) + ") -> " + + pyGridTypeName + "\n\n" + "Convert a triangle and/or quad mesh to a narrow-band level set volume.\n" + "The mesh must form a closed surface, but the surface need not be\n" + "manifold and may have self intersections and degenerate faces.\n" + "The mesh is described by a NumPy array of world-space points\n" + "and NumPy arrays of 3- and 4-tuples of point indices that specify\n" + "the vertices of the triangles and quadrilaterals that form the mesh.\n" + "Either the triangle or the quad array may be empty or None.\n" + "The resulting volume will have the given transform (or the identity\n" + "transform if no transform is given) and a narrow band width of\n" + "2 x halfWidth voxels.").c_str()) + .staticmethod("createLevelSetFromPolygons") + + .def("prune", &pyGrid::prune, + (py::arg("tolerance")=0), + "prune(tolerance=0)\n\n" + "Remove nodes whose values all have the same active state\n" + "and are equal to within a given tolerance.") + .def("pruneInactive", &pyGrid::pruneInactive, + (py::arg("value")=py::object()), + "pruneInactive(value=None)\n\n" + "Remove nodes whose values are all inactive and replace them\n" + "with either background tiles or tiles of the given value\n" + "(if the value is not None).") + + .def("empty", &GridType::empty, + "empty() -> bool\n\n" + "Return True if this grid contains only background voxels.") + .def("__nonzero__", &pyGrid::notEmpty) + + .def("clear", &GridType::clear, + "clear()\n\n" + "Remove all tiles from this grid and all nodes other than the root node.") + + .def("merge", &GridType::merge, + ("merge(" + pyGridTypeName + ")\n\n" + "Move child nodes from the other grid into this grid wherever\n" + "those nodes correspond to constant-value tiles in this grid,\n" + "and replace leaf-level inactive voxels in this grid with\n" + "corresponding voxels in the other grid that are active.\n\n" + "Note: this operation always empties the other grid.").c_str()) + + .def("mapOn", &pyGrid::mapOn, + py::arg("function"), + "mapOn(function)\n\n" + "Iterate over all the active (\"on\") values (tile and voxel)\n" + "of this grid and replace each value with function(value).\n\n" + "Example: grid.mapOn(lambda x: x * 2 if x < 0.5 else x)") + + .def("mapOff", &pyGrid::mapOff, + py::arg("function"), + "mapOff(function)\n\n" + "Iterate over all the inactive (\"off\") values (tile and voxel)\n" + "of this grid and replace each value with function(value).\n\n" + "Example: grid.mapOff(lambda x: x * 2 if x < 0.5 else x)") + + .def("mapAll", &pyGrid::mapAll, + py::arg("function"), + "mapAll(function)\n\n" + "Iterate over all values (tile and voxel) of this grid\n" + "and replace each value with function(value).\n\n" + "Example: grid.mapAll(lambda x: x * 2 if x < 0.5 else x)") + + .def("combine", &pyGrid::combine, + (py::arg("grid"), py::arg("function")), + "combine(grid, function)\n\n" + "Compute function(self, other) over all corresponding pairs\n" + "of values (tile or voxel) of this grid and the other grid\n" + "and store the result in this grid.\n\n" + "Note: this operation always empties the other grid.\n\n" + "Example: grid.combine(otherGrid, lambda a, b: min(a, b))") + + // + // Iterators + // + .def("citerOnValues", &pyGrid::IterTraits::begin, + "citerOnValues() -> iterator\n\n" + "Return a read-only iterator over this grid's active\ntile and voxel values.") + .def("citerOffValues", &pyGrid::IterTraits::begin, + "iterOffValues() -> iterator\n\n" + "Return a read-only iterator over this grid's inactive\ntile and voxel values.") + .def("citerAllValues", &pyGrid::IterTraits::begin, + "iterAllValues() -> iterator\n\n" + "Return a read-only iterator over all of this grid's\ntile and voxel values.") + + .def("iterOnValues", &pyGrid::IterTraits::begin, + "iterOnValues() -> iterator\n\n" + "Return a read/write iterator over this grid's active\ntile and voxel values.") + .def("iterOffValues", &pyGrid::IterTraits::begin, + "iterOffValues() -> iterator\n\n" + "Return a read/write iterator over this grid's inactive\ntile and voxel values.") + .def("iterAllValues", &pyGrid::IterTraits::begin, + "iterAllValues() -> iterator\n\n" + "Return a read/write iterator over all of this grid's\ntile and voxel values.") + + ; // py::class_ + + // Register the GridPtr-to-Python object converter explicitly + // if it is not already implicitly registered. + try { + py::object testObj{GridPtr()}; + } catch (py::error_already_set&) { + PyErr_Clear(); + py::register_ptr_to_python(); + } + + py::implicitly_convertible(); + py::implicitly_convertible(); + /// @todo Is there a way to implicitly convert GridType references to GridBase + /// references without wrapping the GridBase class? The following doesn't compile, + /// because GridBase has pure virtual functions: + /// @code + /// py::implicitly_convertible(); + /// @endcode + + // Wrap const and non-const value accessors and expose them + // as nested classes of the Grid class. + pyAccessor::AccessorWrap::wrap(); + pyAccessor::AccessorWrap::wrap(); + + // Wrap tree value iterators and expose them as nested classes of the Grid class. + IterWrap::wrap(); + IterWrap::wrap(); + IterWrap::wrap(); + IterWrap::wrap(); + IterWrap::wrap(); + IterWrap::wrap(); + + } // gridClassScope + + // Add the Python type object for this grid type to the module-level list. + py::extract(py::scope().attr("GridTypes"))().append( + py::scope().attr(pyGridTypeName.c_str())); +} + +} // namespace pyGrid + +#endif // OPENVDB_PYGRID_HAS_BEEN_INCLUDED diff --git a/openvdb/python/pyIntGrid.cc b/openvdb/python/pyIntGrid.cc new file mode 100644 index 00000000..c5190bad --- /dev/null +++ b/openvdb/python/pyIntGrid.cc @@ -0,0 +1,21 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyIntGrid.cc +/// @brief Boost.Python wrappers for scalar, integer-valued openvdb::Grid types + +#include "pyGrid.h" + + +void exportIntGrid(); + + +void +exportIntGrid() +{ + pyGrid::exportGrid(); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + pyGrid::exportGrid(); + pyGrid::exportGrid(); +#endif +} diff --git a/openvdb/python/pyMetadata.cc b/openvdb/python/pyMetadata.cc new file mode 100644 index 00000000..534fff3b --- /dev/null +++ b/openvdb/python/pyMetadata.cc @@ -0,0 +1,64 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include "openvdb/openvdb.h" + +namespace py = boost::python; +using namespace openvdb::OPENVDB_VERSION_NAME; + +namespace { + +class MetadataWrap: public Metadata, public py::wrapper +{ +public: + Name typeName() const { return static_cast(this->get_override("typeName")()); } + Metadata::Ptr copy() const { + return static_cast(this->get_override("copy")()); + } + void copy(const Metadata& other) { this->get_override("copy")(other); } + std::string str() const {return static_cast(this->get_override("str")());} + bool asBool() const { return static_cast(this->get_override("asBool")()); } + Index32 size() const { return static_cast(this->get_override("size")()); } + +protected: + void readValue(std::istream& is, Index32 numBytes) { + this->get_override("readValue")(is, numBytes); + } + void writeValue(std::ostream& os) const { + this->get_override("writeValue")(os); + } +}; + +// aliases disambiguate the different versions of copy +Metadata::Ptr (MetadataWrap::*copy0)() const = &MetadataWrap::copy; +void (MetadataWrap::*copy1)(const Metadata&) = &MetadataWrap::copy; + +} // end anonymous namespace + + +void exportMetadata(); + +void +exportMetadata() +{ + py::class_ clss( + /*classname=*/"Metadata", + /*docstring=*/ + "Class that holds the value of a single item of metadata of a type\n" + "for which no Python equivalent exists (typically a custom type)", + /*ctor=*/py::no_init // can only be instantiated from C++, not from Python + ); + clss.def("copy", py::pure_virtual(copy0), + "copy() -> Metadata\n\nReturn a copy of this value.") + .def("copy", py::pure_virtual(copy1), + "copy() -> Metadata\n\nReturn a copy of this value.") + .def("type", py::pure_virtual(&Metadata::typeName), + "type() -> str\n\nReturn the name of this value's type.") + .def("size", py::pure_virtual(&Metadata::size), + "size() -> int\n\nReturn the size of this value in bytes.") + .def("__nonzero__", py::pure_virtual(&Metadata::asBool)) + .def("__str__", py::pure_virtual(&Metadata::str)) + ; + py::register_ptr_to_python(); +} diff --git a/openvdb/python/pyOpenVDBModule.cc b/openvdb/python/pyOpenVDBModule.cc new file mode 100644 index 00000000..eada666c --- /dev/null +++ b/openvdb/python/pyOpenVDBModule.cc @@ -0,0 +1,958 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include // must be included before python on macos +#include // for strncmp(), strrchr(), etc. +#include +#include +#include // for std::make_pair() +#include +#include +#include +#ifndef DWA_BOOST_VERSION +#include +#define DWA_BOOST_VERSION (10 * BOOST_VERSION) +#endif +#if defined PY_OPENVDB_USE_NUMPY && DWA_BOOST_VERSION < 1065000 + #define PY_ARRAY_UNIQUE_SYMBOL PY_OPENVDB_ARRAY_API + #include + #ifdef NPY_1_7_API_VERSION + #define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION + #endif + #include // for import_array() +#endif +#include "openvdb/openvdb.h" +#include "pyopenvdb.h" +#include "pyGrid.h" +#include "pyutil.h" + +namespace py = boost::python; + + +// Forward declarations +void exportTransform(); +void exportMetadata(); +void exportFloatGrid(); +void exportIntGrid(); +void exportVec3Grid(); +void exportPointGrid(); + + +namespace _openvdbmodule { + +using namespace openvdb; + + +/// Helper class to convert between a Python numeric sequence +/// (tuple, list, etc.) and an openvdb::Coord +struct CoordConverter +{ + /// @return a Python tuple object equivalent to the given Coord. + static PyObject* convert(const openvdb::Coord& xyz) + { + py::object obj = py::make_tuple(xyz[0], xyz[1], xyz[2]); + Py_INCREF(obj.ptr()); + ///< @todo is this the right way to ensure that the object + ///< doesn't get freed on exit? + return obj.ptr(); + } + + /// @return nullptr if the given Python object is not convertible to a Coord. + static void* convertible(PyObject* obj) + { + if (!PySequence_Check(obj)) return nullptr; // not a Python sequence + + Py_ssize_t len = PySequence_Length(obj); + if (len != 3 && len != 1) return nullptr; // not the right length + + return obj; + } + + /// Convert from a Python object to a Coord. + static void construct(PyObject* obj, + py::converter::rvalue_from_python_stage1_data* data) + { + // Construct a Coord in the provided memory location. + using StorageT = py::converter::rvalue_from_python_storage; + void* storage = reinterpret_cast(data)->storage.bytes; + new (storage) openvdb::Coord; // placement new + data->convertible = storage; + + openvdb::Coord* xyz = static_cast(storage); + + // Populate the Coord. + switch (PySequence_Length(obj)) { + case 1: + xyz->reset(pyutil::getSequenceItem(obj, 0)); + break; + case 3: + xyz->reset( + pyutil::getSequenceItem(obj, 0), + pyutil::getSequenceItem(obj, 1), + pyutil::getSequenceItem(obj, 2)); + break; + default: + PyErr_Format(PyExc_ValueError, + "expected a sequence of three integers"); + py::throw_error_already_set(); + break; + } + } + + /// Register both the Coord-to-tuple and the sequence-to-Coord converters. + static void registerConverter() + { + py::to_python_converter(); + py::converter::registry::push_back( + &CoordConverter::convertible, + &CoordConverter::construct, + py::type_id()); + } +}; // struct CoordConverter + +/// @todo CoordBBoxConverter? + + +//////////////////////////////////////// + + +/// Helper class to convert between a Python numeric sequence +/// (tuple, list, etc.) and an openvdb::Vec +template +struct VecConverter +{ + static PyObject* convert(const VecT& v) + { + py::object obj; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + switch (VecT::size) { // compile-time constant + case 2: obj = py::make_tuple(v[0], v[1]); break; + case 3: obj = py::make_tuple(v[0], v[1], v[2]); break; + case 4: obj = py::make_tuple(v[0], v[1], v[2], v[3]); break; + default: + { + py::list lst; + for (int n = 0; n < VecT::size; ++n) lst.append(v[n]); + obj = lst; + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + Py_INCREF(obj.ptr()); + return obj.ptr(); + } + + static void* convertible(PyObject* obj) + { + if (!PySequence_Check(obj)) return nullptr; // not a Python sequence + + Py_ssize_t len = PySequence_Length(obj); + if (len != VecT::size) return nullptr; + + // Check that all elements of the Python sequence are convertible + // to the Vec's value type. + py::object seq = pyutil::pyBorrow(obj); + for (int i = 0; i < VecT::size; ++i) { + if (!py::extract(seq[i]).check()) { + return nullptr; + } + } + return obj; + } + + static void construct(PyObject* obj, + py::converter::rvalue_from_python_stage1_data* data) + { + // Construct a Vec in the provided memory location. + using StorageT = py::converter::rvalue_from_python_storage; + void* storage = reinterpret_cast(data)->storage.bytes; + new (storage) VecT; // placement new + data->convertible = storage; + VecT* v = static_cast(storage); + + // Populate the vector. + for (int n = 0; n < VecT::size; ++n) { + (*v)[n] = pyutil::getSequenceItem(obj, n); + } + } + + static void registerConverter() + { + py::to_python_converter >(); + py::converter::registry::push_back( + &VecConverter::convertible, + &VecConverter::construct, + py::type_id()); + } +}; // struct VecConverter + + +//////////////////////////////////////// + + +/// Helper class to convert between a 2D Python numeric sequence +/// (tuple, list, etc.) and an openvdb::Mat +template +struct MatConverter +{ + /// Return the given matrix as a Python list of lists. + static py::object toList(const MatT& m) + { + py::list obj; + for (int i = 0; i < MatT::size; ++i) { + py::list rowObj; + for (int j = 0; j < MatT::size; ++j) { rowObj.append(m(i, j)); } + obj.append(rowObj); + } + return std::move(obj); + } + + /// Extract a matrix from a Python sequence of numeric sequences. + static MatT fromSeq(py::object obj) + { + MatT m = MatT::zero(); + if (py::len(obj) == MatT::size) { + for (int i = 0; i < MatT::size; ++i) { + py::object rowObj = obj[i]; + if (py::len(rowObj) != MatT::size) return MatT::zero(); + for (int j = 0; j < MatT::size; ++j) { + m(i, j) = py::extract(rowObj[j]); + } + } + } + return m; + } + + static PyObject* convert(const MatT& m) + { + py::object obj = toList(m); + Py_INCREF(obj.ptr()); + return obj.ptr(); + } + + static void* convertible(PyObject* obj) + { + if (!PySequence_Check(obj)) return nullptr; // not a Python sequence + + Py_ssize_t len = PySequence_Length(obj); + if (len != MatT::size) return nullptr; + + py::object seq = pyutil::pyBorrow(obj); + for (int i = 0; i < MatT::size; ++i) { + py::object rowObj = seq[i]; + if (py::len(rowObj) != MatT::size) return nullptr; + // Check that all elements of the Python sequence are convertible + // to the Mat's value type. + for (int j = 0; j < MatT::size; ++j) { + if (!py::extract(rowObj[j]).check()) { + return nullptr; + } + } + } + return obj; + } + + static void construct(PyObject* obj, + py::converter::rvalue_from_python_stage1_data* data) + { + // Construct a Mat in the provided memory location. + using StorageT = py::converter::rvalue_from_python_storage; + void* storage = reinterpret_cast(data)->storage.bytes; + new (storage) MatT; // placement new + data->convertible = storage; + *(static_cast(storage)) = fromSeq(pyutil::pyBorrow(obj)); + } + + static void registerConverter() + { + py::to_python_converter >(); + py::converter::registry::push_back( + &MatConverter::convertible, + &MatConverter::construct, + py::type_id()); + } +}; // struct MatConverter + + +//////////////////////////////////////// + + +/// Helper class to convert between a Python integer and a openvdb::PointIndex +template +struct PointIndexConverter +{ + using IntType = typename PointIndexT::IntType; + + /// @return a Python integer object equivalent to the given PointIndex. + static PyObject* convert(const PointIndexT& index) + { + py::object obj(static_cast(index)); + Py_INCREF(obj.ptr()); + return obj.ptr(); + } + + /// @return nullptr if the given Python object is not convertible to the PointIndex. + static void* convertible(PyObject* obj) + { +#if PY_MAJOR_VERSION >= 3 + if (!PyLong_Check(obj)) return nullptr; // not a Python integer +#else + if (!PyInt_Check(obj)) return nullptr; // not a Python integer +#endif + return obj; + } + + /// Convert from a Python object to a PointIndex. + static void construct(PyObject* obj, + py::converter::rvalue_from_python_stage1_data* data) + { + // Construct a PointIndex in the provided memory location. + using StorageT = py::converter::rvalue_from_python_storage; + void* storage = reinterpret_cast(data)->storage.bytes; + new (storage) PointIndexT; // placement new + data->convertible = storage; + + // Extract the PointIndex from the python integer + PointIndexT* index = static_cast(storage); +#if PY_MAJOR_VERSION >= 3 + *index = static_cast(PyLong_AsLong(obj)); +#else + *index = static_cast(PyInt_AsLong(obj)); +#endif + } + + /// Register both the PointIndex-to-integer and the integer-to-PointIndex converters. + static void registerConverter() + { + py::to_python_converter(); + py::converter::registry::push_back( + &PointIndexConverter::convertible, + &PointIndexConverter::construct, + py::type_id()); + } +}; // struct PointIndexConverter + + +//////////////////////////////////////// + + +/// Helper class to convert between a Python dict and an openvdb::MetaMap +/// @todo Consider implementing a separate, templated converter for +/// the various Metadata types. +struct MetaMapConverter +{ + static PyObject* convert(const MetaMap& metaMap) + { + py::dict ret; + for (MetaMap::ConstMetaIterator it = metaMap.beginMeta(); + it != metaMap.endMeta(); ++it) + { + if (Metadata::Ptr meta = it->second) { + py::object obj(meta); + const std::string typeName = meta->typeName(); + if (typeName == StringMetadata::staticTypeName()) { + obj = py::str(static_cast(*meta).value()); + } else if (typeName == DoubleMetadata::staticTypeName()) { + obj = py::object(static_cast(*meta).value()); + } else if (typeName == FloatMetadata::staticTypeName()) { + obj = py::object(static_cast(*meta).value()); + } else if (typeName == Int32Metadata::staticTypeName()) { + obj = py::object(static_cast(*meta).value()); + } else if (typeName == Int64Metadata::staticTypeName()) { + obj = py::object(static_cast(*meta).value()); + } else if (typeName == BoolMetadata::staticTypeName()) { + obj = py::object(static_cast(*meta).value()); + } else if (typeName == Vec2DMetadata::staticTypeName()) { + const Vec2d v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1]); + } else if (typeName == Vec2IMetadata::staticTypeName()) { + const Vec2i v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1]); + } else if (typeName == Vec2SMetadata::staticTypeName()) { + const Vec2s v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1]); + } else if (typeName == Vec3DMetadata::staticTypeName()) { + const Vec3d v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2]); + } else if (typeName == Vec3IMetadata::staticTypeName()) { + const Vec3i v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2]); + } else if (typeName == Vec3SMetadata::staticTypeName()) { + const Vec3s v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2]); + } else if (typeName == Vec4DMetadata::staticTypeName()) { + const Vec4d v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2], v[3]); + } else if (typeName == Vec4IMetadata::staticTypeName()) { + const Vec4i v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2], v[3]); + } else if (typeName == Vec4SMetadata::staticTypeName()) { + const Vec4s v = static_cast(*meta).value(); + obj = py::make_tuple(v[0], v[1], v[2], v[3]); + } else if (typeName == Mat4SMetadata::staticTypeName()) { + const Mat4s m = static_cast(*meta).value(); + obj = MatConverter::toList(m); + } else if (typeName == Mat4DMetadata::staticTypeName()) { + const Mat4d m = static_cast(*meta).value(); + obj = MatConverter::toList(m); + } + ret[it->first] = obj; + } + } + Py_INCREF(ret.ptr()); + return ret.ptr(); + } + + static void* convertible(PyObject* obj) + { + return (PyMapping_Check(obj) ? obj : nullptr); + } + + static void construct(PyObject* obj, + py::converter::rvalue_from_python_stage1_data* data) + { + // Construct a MetaMap in the provided memory location. + using StorageT = py::converter::rvalue_from_python_storage; + void* storage = reinterpret_cast(data)->storage.bytes; + new (storage) MetaMap; // placement new + data->convertible = storage; + MetaMap* metaMap = static_cast(storage); + + // Populate the map. + py::dict pyDict(pyutil::pyBorrow(obj)); + py::list keys = pyDict.keys(); + for (size_t i = 0, N = py::len(keys); i < N; ++i) { + std::string name; + py::object key = keys[i]; + if (py::extract(key).check()) { + name = py::extract(key); + } else { + const std::string + keyAsStr = py::extract(key.attr("__str__")()), + keyType = pyutil::className(key); + PyErr_Format(PyExc_TypeError, + "expected string as metadata name, found object" + " \"%s\" of type %s", keyAsStr.c_str(), keyType.c_str()); + py::throw_error_already_set(); + } + + // Note: the order of the following tests is significant, as it + // avoids unnecessary type promotion (e.g., of ints to floats). + py::object val = pyDict[keys[i]]; + Metadata::Ptr value; + if (py::extract(val).check()) { + value.reset(new StringMetadata(py::extract(val))); + } else if (bool(PyBool_Check(val.ptr()))) { + value.reset(new BoolMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + const Int64 n = py::extract(val); + if (n <= std::numeric_limits::max() + && n >= std::numeric_limits::min()) + { + value.reset(new Int32Metadata(static_cast(n))); + } else { + value.reset(new Int64Metadata(n)); + } + //} else if (py::extract(val).check()) { + // value.reset(new FloatMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new DoubleMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec2IMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec2DMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec2SMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec3IMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec3DMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec3SMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec4IMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec4DMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Vec4SMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Mat4DMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value.reset(new Mat4SMetadata(py::extract(val))); + } else if (py::extract(val).check()) { + value = py::extract(val); + } else { + const std::string + valAsStr = py::extract(val.attr("__str__")()), + valType = pyutil::className(val); + PyErr_Format(PyExc_TypeError, + "metadata value \"%s\" of type %s is not allowed", + valAsStr.c_str(), valType.c_str()); + py::throw_error_already_set(); + } + if (value) metaMap->insertMeta(name, *value); + } + } + + static void registerConverter() + { + py::to_python_converter(); + py::converter::registry::push_back( + &MetaMapConverter::convertible, + &MetaMapConverter::construct, + py::type_id()); + } +}; // struct MetaMapConverter + + +//////////////////////////////////////// + + +template void translateException(const T&) {} + +/// @brief Define a function that translates an OpenVDB exception into +/// the equivalent Python exception. +/// @details openvdb::Exception::what() typically returns a string of the form +/// ": ". To avoid duplication of the exception name in Python +/// stack traces, the function strips off the ": " prefix. To do that, +/// it needs the class name in the form of a string, hence the preprocessor macro. +#define PYOPENVDB_CATCH(_openvdbname, _pyname) \ + template<> \ + void translateException<_openvdbname>(const _openvdbname& e) \ + { \ + const char* name = #_openvdbname; \ + if (const char* c = std::strrchr(name, ':')) name = c + 1; \ + const int namelen = int(std::strlen(name)); \ + const char* msg = e.what(); \ + if (0 == std::strncmp(msg, name, namelen)) msg += namelen; \ + if (0 == std::strncmp(msg, ": ", 2)) msg += 2; \ + PyErr_SetString(_pyname, msg); \ + } + + +/// Define an overloaded function that translate all OpenVDB exceptions into +/// their Python equivalents. +/// @todo IllegalValueException and LookupError are redundant and should someday be removed. +PYOPENVDB_CATCH(openvdb::ArithmeticError, PyExc_ArithmeticError) +PYOPENVDB_CATCH(openvdb::IllegalValueException, PyExc_ValueError) +PYOPENVDB_CATCH(openvdb::IndexError, PyExc_IndexError) +PYOPENVDB_CATCH(openvdb::IoError, PyExc_IOError) +PYOPENVDB_CATCH(openvdb::KeyError, PyExc_KeyError) +PYOPENVDB_CATCH(openvdb::LookupError, PyExc_LookupError) +PYOPENVDB_CATCH(openvdb::NotImplementedError, PyExc_NotImplementedError) +PYOPENVDB_CATCH(openvdb::ReferenceError, PyExc_ReferenceError) +PYOPENVDB_CATCH(openvdb::RuntimeError, PyExc_RuntimeError) +PYOPENVDB_CATCH(openvdb::TypeError, PyExc_TypeError) +PYOPENVDB_CATCH(openvdb::ValueError, PyExc_ValueError) + +#undef PYOPENVDB_CATCH + + +//////////////////////////////////////// + + +py::object readFromFile(const std::string&, const std::string&); +py::tuple readAllFromFile(const std::string&); +py::dict readFileMetadata(const std::string&); +py::object readGridMetadataFromFile(const std::string&, const std::string&); +py::list readAllGridMetadataFromFile(const std::string&); +void writeToFile(const std::string&, py::object, py::object); + + +py::object +readFromFile(const std::string& filename, const std::string& gridName) +{ + io::File vdbFile(filename); + vdbFile.open(); + + if (!vdbFile.hasGrid(gridName)) { + PyErr_Format(PyExc_KeyError, + "file %s has no grid named \"%s\"", + filename.c_str(), gridName.c_str()); + py::throw_error_already_set(); + } + + return pyGrid::getGridFromGridBase(vdbFile.readGrid(gridName)); +} + + +py::tuple +readAllFromFile(const std::string& filename) +{ + io::File vdbFile(filename); + vdbFile.open(); + + GridPtrVecPtr grids = vdbFile.getGrids(); + MetaMap::Ptr metadata = vdbFile.getMetadata(); + vdbFile.close(); + + py::list gridList; + for (GridPtrVec::const_iterator it = grids->begin(); it != grids->end(); ++it) { + gridList.append(pyGrid::getGridFromGridBase(*it)); + } + + return py::make_tuple(gridList, py::dict(*metadata)); +} + + +py::dict +readFileMetadata(const std::string& filename) +{ + io::File vdbFile(filename); + vdbFile.open(); + + MetaMap::Ptr metadata = vdbFile.getMetadata(); + vdbFile.close(); + + return py::dict(*metadata); +} + + +py::object +readGridMetadataFromFile(const std::string& filename, const std::string& gridName) +{ + io::File vdbFile(filename); + vdbFile.open(); + + if (!vdbFile.hasGrid(gridName)) { + PyErr_Format(PyExc_KeyError, + "file %s has no grid named \"%s\"", + filename.c_str(), gridName.c_str()); + py::throw_error_already_set(); + } + + return pyGrid::getGridFromGridBase(vdbFile.readGridMetadata(gridName)); +} + + +py::list +readAllGridMetadataFromFile(const std::string& filename) +{ + io::File vdbFile(filename); + vdbFile.open(); + GridPtrVecPtr grids = vdbFile.readAllGridMetadata(); + vdbFile.close(); + + py::list gridList; + for (GridPtrVec::const_iterator it = grids->begin(); it != grids->end(); ++it) { + gridList.append(pyGrid::getGridFromGridBase(*it)); + } + return gridList; +} + + +void +writeToFile(const std::string& filename, py::object gridOrSeqObj, py::object dictObj) +{ + GridPtrVec gridVec; + try { + GridBase::Ptr base = pyopenvdb::getGridFromPyObject(gridOrSeqObj); + gridVec.push_back(base); + } catch (openvdb::TypeError&) { + for (py::stl_input_iterator it(gridOrSeqObj), end; it != end; ++it) { + if (GridBase::Ptr base = pyGrid::getGridBaseFromGrid(*it)) { + gridVec.push_back(base); + } + } + } + + io::File vdbFile(filename); + if (dictObj.is_none()) { + vdbFile.write(gridVec); + } else { + MetaMap metadata = py::extract(dictObj); + vdbFile.write(gridVec, metadata); + } + vdbFile.close(); +} + + +//////////////////////////////////////// + + +std::string getLoggingLevel(); +void setLoggingLevel(py::object); +void setProgramName(py::object, bool); + + +std::string +getLoggingLevel() +{ + switch (logging::getLevel()) { + case logging::Level::Debug: return "debug"; + case logging::Level::Info: return "info"; + case logging::Level::Warn: return "warn"; + case logging::Level::Error: return "error"; + case logging::Level::Fatal: break; + } + return "fatal"; +} + + +void +setLoggingLevel(py::object pyLevelObj) +{ + std::string levelStr; + if (!py::extract(pyLevelObj).check()) { + levelStr = py::extract(pyLevelObj.attr("__str__")()); + } else { + const py::str pyLevelStr = + py::extract(pyLevelObj.attr("lower")().attr("lstrip")("-")); + levelStr = py::extract(pyLevelStr); + if (levelStr == "debug") { logging::setLevel(logging::Level::Debug); return; } + else if (levelStr == "info") { logging::setLevel(logging::Level::Info); return; } + else if (levelStr == "warn") { logging::setLevel(logging::Level::Warn); return; } + else if (levelStr == "error") { logging::setLevel(logging::Level::Error); return; } + else if (levelStr == "fatal") { logging::setLevel(logging::Level::Fatal); return; } + } + PyErr_Format(PyExc_ValueError, + "expected logging level \"debug\", \"info\", \"warn\", \"error\", or \"fatal\"," + " got \"%s\"", levelStr.c_str()); + py::throw_error_already_set(); +} + + +void +setProgramName(py::object nameObj, bool color) +{ + if (py::extract(nameObj).check()) { + logging::setProgramName(py::extract(nameObj), color); + } else { + const std::string + str = py::extract(nameObj.attr("__str__")()), + typ = pyutil::className(nameObj).c_str(); + PyErr_Format(PyExc_TypeError, + "expected string as program name, got \"%s\" of type %s", + str.c_str(), typ.c_str()); + py::throw_error_already_set(); + } +} + + +//////////////////////////////////////// + + +// Descriptor for the openvdb::GridClass enum (for use with pyutil::StringEnum) +struct GridClassDescr +{ + static const char* name() { return "GridClass"; } + static const char* doc() + { + return "Classes of volumetric data (level set, fog volume, etc.)"; + } + static pyutil::CStringPair item(int i) + { + static const int sCount = 4; + static const char* const sStrings[sCount][2] = { + { "UNKNOWN", strdup(GridBase::gridClassToString(GRID_UNKNOWN).c_str()) }, + { "LEVEL_SET", strdup(GridBase::gridClassToString(GRID_LEVEL_SET).c_str()) }, + { "FOG_VOLUME", strdup(GridBase::gridClassToString(GRID_FOG_VOLUME).c_str()) }, + { "STAGGERED", strdup(GridBase::gridClassToString(GRID_STAGGERED).c_str()) } + }; + if (i >= 0 && i < sCount) return pyutil::CStringPair(&sStrings[i][0], &sStrings[i][1]); + return pyutil::CStringPair(static_cast(nullptr), static_cast(nullptr)); + } +}; + + +// Descriptor for the openvdb::VecType enum (for use with pyutil::StringEnum) +struct VecTypeDescr +{ + static const char* name() { return "VectorType"; } + static const char* doc() + { + return + "The type of a vector determines how transforms are applied to it.\n" + " - INVARIANT:\n" + " does not transform (e.g., tuple, uvw, color)\n" + " - COVARIANT:\n" + " apply inverse-transpose transformation with w = 0\n" + " and ignore translation (e.g., gradient/normal)\n" + " - COVARIANT_NORMALIZE:\n" + " apply inverse-transpose transformation with w = 0\n" + " and ignore translation, vectors are renormalized\n" + " (e.g., unit normal)\n" + " - CONTRAVARIANT_RELATIVE:\n" + " apply \"regular\" transformation with w = 0 and ignore\n" + " translation (e.g., displacement, velocity, acceleration)\n" + " - CONTRAVARIANT_ABSOLUTE:\n" + " apply \"regular\" transformation with w = 1 so that\n" + " vector translates (e.g., position)\n"; + } + static pyutil::CStringPair item(int i) + { + static const int sCount = 5; + static const char* const sStrings[sCount][2] = { + { "INVARIANT", strdup(GridBase::vecTypeToString(openvdb::VEC_INVARIANT).c_str()) }, + { "COVARIANT", strdup(GridBase::vecTypeToString(openvdb::VEC_COVARIANT).c_str()) }, + { "COVARIANT_NORMALIZE", + strdup(GridBase::vecTypeToString(openvdb::VEC_COVARIANT_NORMALIZE).c_str()) }, + { "CONTRAVARIANT_RELATIVE", + strdup(GridBase::vecTypeToString(openvdb::VEC_CONTRAVARIANT_RELATIVE).c_str()) }, + { "CONTRAVARIANT_ABSOLUTE", + strdup(GridBase::vecTypeToString(openvdb::VEC_CONTRAVARIANT_ABSOLUTE).c_str()) } + }; + if (i >= 0 && i < sCount) return std::make_pair(&sStrings[i][0], &sStrings[i][1]); + return pyutil::CStringPair(static_cast(nullptr), static_cast(nullptr)); + } +}; + +} // namespace _openvdbmodule + + +//////////////////////////////////////// + + +#ifdef DWA_OPENVDB +#define PY_OPENVDB_MODULE_NAME _openvdb +extern "C" { void init_openvdb(); } +#else +#define PY_OPENVDB_MODULE_NAME pyopenvdb +extern "C" { void initpyopenvdb(); } +#endif + +BOOST_PYTHON_MODULE(PY_OPENVDB_MODULE_NAME) +{ + // Don't auto-generate ugly, C++-style function signatures. + py::docstring_options docOptions; + docOptions.disable_signatures(); + docOptions.enable_user_defined(); + +#ifdef PY_OPENVDB_USE_NUMPY + // Initialize NumPy. +#ifdef PY_OPENVDB_USE_BOOST_PYTHON_NUMPY + boost::python::numpy::initialize(); +#else +#if PY_MAJOR_VERSION >= 3 + if (_import_array()) {} +#else + import_array(); +#endif +#endif +#endif + + using namespace openvdb::OPENVDB_VERSION_NAME; + + // Initialize OpenVDB. + initialize(); + + _openvdbmodule::CoordConverter::registerConverter(); + + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + _openvdbmodule::VecConverter::registerConverter(); + + _openvdbmodule::MatConverter::registerConverter(); + _openvdbmodule::MatConverter::registerConverter(); + + _openvdbmodule::PointIndexConverter::registerConverter(); + + _openvdbmodule::MetaMapConverter::registerConverter(); + +#define PYOPENVDB_TRANSLATE_EXCEPTION(_classname) \ + py::register_exception_translator<_classname>(&_openvdbmodule::translateException<_classname>) + + PYOPENVDB_TRANSLATE_EXCEPTION(ArithmeticError); + PYOPENVDB_TRANSLATE_EXCEPTION(IllegalValueException); + PYOPENVDB_TRANSLATE_EXCEPTION(IndexError); + PYOPENVDB_TRANSLATE_EXCEPTION(IoError); + PYOPENVDB_TRANSLATE_EXCEPTION(KeyError); + PYOPENVDB_TRANSLATE_EXCEPTION(LookupError); + PYOPENVDB_TRANSLATE_EXCEPTION(NotImplementedError); + PYOPENVDB_TRANSLATE_EXCEPTION(ReferenceError); + PYOPENVDB_TRANSLATE_EXCEPTION(RuntimeError); + PYOPENVDB_TRANSLATE_EXCEPTION(TypeError); + PYOPENVDB_TRANSLATE_EXCEPTION(ValueError); + +#undef PYOPENVDB_TRANSLATE_EXCEPTION + + + // Export the python bindings. + exportTransform(); + exportMetadata(); + exportFloatGrid(); + exportIntGrid(); + exportVec3Grid(); + exportPointGrid(); + + + py::def("read", + &_openvdbmodule::readFromFile, + (py::arg("filename"), py::arg("gridname")), + "read(filename, gridname) -> Grid\n\n" + "Read a single grid from a .vdb file."); + + py::def("readAll", + &_openvdbmodule::readAllFromFile, + py::arg("filename"), + "readAll(filename) -> list, dict\n\n" + "Read a .vdb file and return a list of grids and\n" + "a dict of file-level metadata."); + + py::def("readMetadata", + &_openvdbmodule::readFileMetadata, + py::arg("filename"), + "readMetadata(filename) -> dict\n\n" + "Read file-level metadata from a .vdb file."); + + py::def("readGridMetadata", + &_openvdbmodule::readGridMetadataFromFile, + (py::arg("filename"), py::arg("gridname")), + "readGridMetadata(filename, gridname) -> Grid\n\n" + "Read a single grid's metadata and transform (but not its tree)\n" + "from a .vdb file."); + + py::def("readAllGridMetadata", + &_openvdbmodule::readAllGridMetadataFromFile, + py::arg("filename"), + "readAllGridMetadata(filename) -> list\n\n" + "Read a .vdb file and return a list of grids populated with\n" + "their metadata and transforms, but not their trees."); + + py::def("write", + &_openvdbmodule::writeToFile, + (py::arg("filename"), py::arg("grids"), py::arg("metadata") = py::object()), + "write(filename, grids, metadata=None)\n\n" + "Write a grid or a sequence of grids and, optionally, a dict\n" + "of (name, value) metadata pairs to a .vdb file."); + + py::def("getLoggingLevel", &_openvdbmodule::getLoggingLevel, + "getLoggingLevel() -> str\n\n" + "Return the severity threshold (\"debug\", \"info\", \"warn\", \"error\",\n" + "or \"fatal\") for error messages."); + py::def("setLoggingLevel", &_openvdbmodule::setLoggingLevel, + (py::arg("level")), + "setLoggingLevel(level)\n\n" + "Specify the severity threshold (\"debug\", \"info\", \"warn\", \"error\",\n" + "or \"fatal\") for error messages. Messages of lower severity\n" + "will be suppressed."); + py::def("setProgramName", &_openvdbmodule::setProgramName, + (py::arg("name"), py::arg("color") = true), + "setProgramName(name, color=True)\n\n" + "Specify the program name to be displayed in error messages,\n" + "and optionally specify whether to print error messages in color."); + + // Add some useful module-level constants. + py::scope().attr("LIBRARY_VERSION") = py::make_tuple( + openvdb::OPENVDB_LIBRARY_MAJOR_VERSION, + openvdb::OPENVDB_LIBRARY_MINOR_VERSION, + openvdb::OPENVDB_LIBRARY_PATCH_VERSION); + py::scope().attr("FILE_FORMAT_VERSION") = openvdb::OPENVDB_FILE_VERSION; + py::scope().attr("COORD_MIN") = openvdb::Coord::min(); + py::scope().attr("COORD_MAX") = openvdb::Coord::max(); + py::scope().attr("LEVEL_SET_HALF_WIDTH") = openvdb::LEVEL_SET_HALF_WIDTH; + + pyutil::StringEnum<_openvdbmodule::GridClassDescr>::wrap(); + pyutil::StringEnum<_openvdbmodule::VecTypeDescr>::wrap(); + +} // BOOST_PYTHON_MODULE diff --git a/openvdb/python/pyPointGrid.cc b/openvdb/python/pyPointGrid.cc new file mode 100644 index 00000000..a5902305 --- /dev/null +++ b/openvdb/python/pyPointGrid.cc @@ -0,0 +1,23 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyPointGrid.cc +/// @brief Boost.Python wrappers for point openvdb::Grid types + +#include + +#include "pyGrid.h" + +namespace py = boost::python; + + +void exportPointGrid(); + + +void +exportPointGrid() +{ +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + pyGrid::exportGrid(); +#endif +} diff --git a/openvdb/python/pyTransform.cc b/openvdb/python/pyTransform.cc new file mode 100644 index 00000000..a4f6fa1f --- /dev/null +++ b/openvdb/python/pyTransform.cc @@ -0,0 +1,326 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include "openvdb/openvdb.h" +#include "pyutil.h" + +namespace py = boost::python; +using namespace openvdb::OPENVDB_VERSION_NAME; + +namespace pyTransform { + +inline void scale1(math::Transform& t, double s) { t.preScale(s); } +inline void scale3(math::Transform& t, const Vec3d& xyz) { t.preScale(xyz); } + +inline Vec3d voxelDim0(math::Transform& t) { return t.voxelSize(); } +inline Vec3d voxelDim1(math::Transform& t, const Vec3d& p) { return t.voxelSize(p); } + +inline double voxelVolume0(math::Transform& t) { return t.voxelVolume(); } +inline double voxelVolume1(math::Transform& t, const Vec3d& p) { return t.voxelVolume(p); } + +inline Vec3d indexToWorld(math::Transform& t, const Vec3d& p) { return t.indexToWorld(p); } +inline Vec3d worldToIndex(math::Transform& t, const Vec3d& p) { return t.worldToIndex(p); } + +inline Coord worldToIndexCellCentered(math::Transform& t, const Vec3d& p) { + return t.worldToIndexCellCentered(p); +} +inline Coord worldToIndexNodeCentered(math::Transform& t, const Vec3d& p) { + return t.worldToIndexNodeCentered(p); +} + + +inline std::string +info(math::Transform& t) +{ + std::ostringstream ostr; + t.print(ostr); + return ostr.str(); +} + + +inline math::Transform::Ptr +createLinearFromDim(double dim) +{ + return math::Transform::createLinearTransform(dim); +} + + +inline math::Transform::Ptr +createLinearFromMat(py::object obj) +{ + Mat4R m; + + // Verify that obj is a four-element sequence. + bool is4x4Seq = (PySequence_Check(obj.ptr()) && PySequence_Length(obj.ptr()) == 4); + if (is4x4Seq) { + for (int row = 0; is4x4Seq && row < 4; ++row) { + // Verify that each element of obj is itself a four-element sequence. + py::object rowObj = obj[row]; + if (PySequence_Check(rowObj.ptr()) && PySequence_Length(rowObj.ptr()) == 4) { + // Extract four numeric values from this row of the sequence. + for (int col = 0; is4x4Seq && col < 4; ++col) { + if (py::extract(rowObj[col]).check()) { + m[row][col] = py::extract(rowObj[col]); + } else { + is4x4Seq = false; + } + } + } else { + is4x4Seq = false; + } + } + } + if (!is4x4Seq) { + PyErr_Format(PyExc_ValueError, "expected a 4 x 4 sequence of numeric values"); + py::throw_error_already_set(); + } + + return math::Transform::createLinearTransform(m); +} + + +inline math::Transform::Ptr +createFrustum(const Coord& xyzMin, const Coord& xyzMax, + double taper, double depth, double voxelDim = 1.0) +{ + return math::Transform::createFrustumTransform( + BBoxd(xyzMin.asVec3d(), xyzMax.asVec3d()), taper, depth, voxelDim); +} + + +//////////////////////////////////////// + + +struct PickleSuite: public py::pickle_suite +{ + enum { STATE_DICT = 0, STATE_MAJOR, STATE_MINOR, STATE_FORMAT, STATE_XFORM }; + + /// Return @c true, indicating that this pickler preserves a Transform's __dict__. + static bool getstate_manages_dict() { return true; } + + /// Return a tuple representing the state of the given Transform. + static py::tuple getstate(py::object xformObj) + { + py::tuple state; + py::extract x(xformObj); + if (x.check()) { + // Extract a Transform from the Python object. + math::Transform xform = x(); + std::ostringstream ostr(std::ios_base::binary); + // Serialize the Transform to a string. + xform.write(ostr); + + // Construct a state tuple comprising the Python object's __dict__, + // the version numbers of the serialization format, + // and the serialized Transform. +#if PY_MAJOR_VERSION >= 3 + // Convert the byte string to a "bytes" sequence. + const std::string s = ostr.str(); + py::object bytesObj = pyutil::pyBorrow(PyBytes_FromStringAndSize(s.data(), s.size())); +#else + py::str bytesObj(ostr.str()); +#endif + state = py::make_tuple( + xformObj.attr("__dict__"), + uint32_t(OPENVDB_LIBRARY_MAJOR_VERSION), + uint32_t(OPENVDB_LIBRARY_MINOR_VERSION), + uint32_t(OPENVDB_FILE_VERSION), + bytesObj); + } + return state; + } + + /// Restore the given Transform to a saved state. + static void setstate(py::object xformObj, py::object stateObj) + { + math::Transform* xform = nullptr; + { + py::extract x(xformObj); + if (x.check()) xform = x(); + else return; + } + + py::tuple state; + { + py::extract x(stateObj); + if (x.check()) state = x(); + } + bool badState = (py::len(state) != 5); + + if (!badState) { + // Restore the object's __dict__. + py::extract x(state[int(STATE_DICT)]); + if (x.check()) { + py::dict d = py::extract(xformObj.attr("__dict__"))(); + d.update(x()); + } else { + badState = true; + } + } + + openvdb::VersionId libVersion; + uint32_t formatVersion = 0; + if (!badState) { + // Extract the serialization format version numbers. + const int idx[3] = { STATE_MAJOR, STATE_MINOR, STATE_FORMAT }; + uint32_t version[3] = { 0, 0, 0 }; + for (int i = 0; i < 3 && !badState; ++i) { + py::extract x(state[idx[i]]); + if (x.check()) version[i] = x(); + else badState = true; + } + libVersion.first = version[0]; + libVersion.second = version[1]; + formatVersion = version[2]; + } + + std::string serialized; + if (!badState) { + // Extract the sequence containing the serialized Transform. + py::object bytesObj = state[int(STATE_XFORM)]; +#if PY_MAJOR_VERSION >= 3 + badState = true; + if (PyBytes_Check(bytesObj.ptr())) { + // Convert the "bytes" sequence to a byte string. + char* buf = NULL; + Py_ssize_t length = 0; + if (-1 != PyBytes_AsStringAndSize(bytesObj.ptr(), &buf, &length)) { + if (buf != NULL && length > 0) { + serialized.assign(buf, buf + length); + badState = false; + } + } + } +#else + py::extract x(bytesObj); + if (x.check()) serialized = x(); + else badState = true; +#endif + } + + if (badState) { + PyErr_SetObject(PyExc_ValueError, +#if PY_MAJOR_VERSION >= 3 + ("expected (dict, int, int, int, bytes) tuple in call to __setstate__; found %s" +#else + ("expected (dict, int, int, int, str) tuple in call to __setstate__; found %s" +#endif + % stateObj.attr("__repr__")()).ptr()); + py::throw_error_already_set(); + } + + // Restore the internal state of the C++ object. + std::istringstream istr(serialized, std::ios_base::binary); + io::setVersion(istr, libVersion, formatVersion); + xform->read(istr); + } +}; // struct PickleSuite + +} // namespace pyTransform + + +void exportTransform(); + +void +exportTransform() +{ + py::enum_("Axis") + .value("X", math::X_AXIS) + .value("Y", math::Y_AXIS) + .value("Z", math::Z_AXIS); + + py::class_("Transform", py::init<>()) + + .def("deepCopy", &math::Transform::copy, + "deepCopy() -> Transform\n\n" + "Return a copy of this transform.") + + /// @todo Should this also be __str__()? + .def("info", &pyTransform::info, + "info() -> str\n\n" + "Return a string containing a description of this transform.\n") + + .def_pickle(pyTransform::PickleSuite()) + + .add_property("typeName", &math::Transform::mapType, + "name of this transform's type") + .add_property("isLinear", &math::Transform::isLinear, + "True if this transform is linear") + + .def("rotate", &math::Transform::preRotate, + (py::arg("radians"), py::arg("axis") = math::X_AXIS), + "rotate(radians, axis)\n\n" + "Accumulate a rotation about either Axis.X, Axis.Y or Axis.Z.") + .def("translate", &math::Transform::postTranslate, py::arg("xyz"), + "translate((x, y, z))\n\n" + "Accumulate a translation.") + .def("scale", &pyTransform::scale1, py::arg("s"), + "scale(s)\n\n" + "Accumulate a uniform scale.") + .def("scale", &pyTransform::scale3, py::arg("sxyz"), + "scale((sx, sy, sz))\n\n" + "Accumulate a nonuniform scale.") + .def("shear", &math::Transform::preShear, + (py::arg("s"), py::arg("axis0"), py::arg("axis1")), + "shear(s, axis0, axis1)\n\n" + "Accumulate a shear (axis0 and axis1 are either\n" + "Axis.X, Axis.Y or Axis.Z).") + + .def("voxelSize", &pyTransform::voxelDim0, + "voxelSize() -> (dx, dy, dz)\n\n" + "Return the size of voxels of the linear component of this transform.") + .def("voxelSize", &pyTransform::voxelDim1, py::arg("xyz"), + "voxelSize((x, y, z)) -> (dx, dy, dz)\n\n" + "Return the size of the voxel at position (x, y, z).") + + .def("voxelVolume", &pyTransform::voxelVolume0, + "voxelVolume() -> float\n\n" + "Return the voxel volume of the linear component of this transform.") + .def("voxelVolume", &pyTransform::voxelVolume1, py::arg("xyz"), + "voxelVolume((x, y, z)) -> float\n\n" + "Return the voxel volume at position (x, y, z).") + + .def("indexToWorld", &pyTransform::indexToWorld, py::arg("xyz"), + "indexToWorld((x, y, z)) -> (x', y', z')\n\n" + "Apply this transformation to the given coordinates.") + .def("worldToIndex", &pyTransform::worldToIndex, py::arg("xyz"), + "worldToIndex((x, y, z)) -> (x', y', z')\n\n" + "Apply the inverse of this transformation to the given coordinates.") + .def("worldToIndexCellCentered", &pyTransform::worldToIndexCellCentered, + py::arg("xyz"), + "worldToIndexCellCentered((x, y, z)) -> (i, j, k)\n\n" + "Apply the inverse of this transformation to the given coordinates\n" + "and round the result to the nearest integer coordinates.") + .def("worldToIndexNodeCentered", &pyTransform::worldToIndexNodeCentered, + py::arg("xyz"), + "worldToIndexNodeCentered((x, y, z)) -> (i, j, k)\n\n" + "Apply the inverse of this transformation to the given coordinates\n" + "and round the result down to the nearest integer coordinates.") + + // Allow Transforms to be compared for equality and inequality. + .def(py::self == py::other()) + .def(py::self != py::other()) + ; + + py::def("createLinearTransform", &pyTransform::createLinearFromMat, py::arg("matrix"), + "createLinearTransform(matrix) -> Transform\n\n" + "Create a new linear transform from a 4 x 4 matrix given as a sequence\n" + "of the form [[a, b, c, d], [e, f, g, h], [i, j, k, l], [m, n, o, p]],\n" + "where [m, n, o, p] is the translation component."); + + py::def("createLinearTransform", &pyTransform::createLinearFromDim, + (py::arg("voxelSize") = 1.0), + "createLinearTransform(voxelSize) -> Transform\n\n" + "Create a new linear transform with the given uniform voxel size."); + + py::def("createFrustumTransform", &pyTransform::createFrustum, + (py::arg("xyzMin"), py::arg("xyzMax"), + py::arg("taper"), py::arg("depth"), py::arg("voxelSize") = 1.0), + "createFrustumTransform(xyzMin, xyzMax, taper, depth, voxelSize) -> Transform\n\n" + "Create a new frustum transform with unit bounding box (xyzMin, xyzMax)\n" + "and the given taper, depth and uniform voxel size."); + + // allows Transform::Ptr Grid::getTransform() to work + py::register_ptr_to_python(); +} diff --git a/openvdb/python/pyVec3Grid.cc b/openvdb/python/pyVec3Grid.cc new file mode 100644 index 00000000..09e98e00 --- /dev/null +++ b/openvdb/python/pyVec3Grid.cc @@ -0,0 +1,21 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyVec3Grid.cc +/// @brief Boost.Python wrappers for vector-valued openvdb::Grid types + +#include "pyGrid.h" + + +void exportVec3Grid(); + + +void +exportVec3Grid() +{ + pyGrid::exportGrid(); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES + pyGrid::exportGrid(); + pyGrid::exportGrid(); +#endif +} diff --git a/openvdb/python/pyopenvdb.h b/openvdb/python/pyopenvdb.h new file mode 100644 index 00000000..0acbf9bf --- /dev/null +++ b/openvdb/python/pyopenvdb.h @@ -0,0 +1,82 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file pyopenvdb.h +/// +/// @brief Glue functions for access to pyOpenVDB objects from C++ code +/// @details Use these functions in your own Python function implementations +/// to extract an OpenVDB grid from or wrap a grid in a @c PyObject. +/// For example (using Boost.Python), +/// @code +/// #include +/// #include +/// #include +/// +/// // Implementation of a Python function that processes pyOpenVDB grids +/// boost::python::object +/// processGrid(boost::python::object inObj) +/// { +/// boost::python::object outObj; +/// try { +/// // Extract an OpenVDB grid from the input argument. +/// if (openvdb::GridBase::Ptr grid = +/// pyopenvdb::getGridFromPyObject(inObj)) +/// { +/// grid = grid->deepCopyGrid(); +/// +/// // Process the grid... +/// +/// // Wrap the processed grid in a PyObject. +/// outObj = pyopenvdb::getPyObjectFromGrid(grid); +/// } +/// } catch (openvdb::TypeError& e) { +/// PyErr_Format(PyExc_TypeError, e.what()); +/// boost::python::throw_error_already_set(); +/// } +/// return outObj; +/// } +/// +/// BOOST_PYTHON_MODULE(mymodule) +/// { +/// openvdb::initialize(); +/// +/// // Definition of a Python function that processes pyOpenVDB grids +/// boost::python::def(/*name=*/"processGrid", &processGrid, /*argname=*/"grid"); +/// } +/// @endcode +/// Then, from Python, +/// @code +/// import openvdb +/// import mymodule +/// +/// grid = openvdb.read('myGrid.vdb', 'MyGrid') +/// grid = mymodule.processGrid(grid) +/// openvdb.write('myProcessedGrid.vdb', [grid]) +/// @endcode + +#ifndef PYOPENVDB_HAS_BEEN_INCLUDED +#define PYOPENVDB_HAS_BEEN_INCLUDED + +#include +#include "openvdb/Grid.h" + + +namespace pyopenvdb { + +//@{ +/// @brief Return a pointer to the OpenVDB grid held by the given Python object. +/// @throw openvdb::TypeError if the Python object is not one of the pyOpenVDB grid types. +/// (See the Python module's GridTypes global variable for the list of supported grid types.) +openvdb::GridBase::Ptr getGridFromPyObject(PyObject*); +openvdb::GridBase::Ptr getGridFromPyObject(const boost::python::object&); +//@} + +/// @brief Return a new Python object that holds the given OpenVDB grid. +/// @return @c None if the given grid pointer is null. +/// @throw openvdb::TypeError if the grid is not of a supported type. +/// (See the Python module's GridTypes global variable for the list of supported grid types.) +boost::python::object getPyObjectFromGrid(const openvdb::GridBase::Ptr&); + +} // namespace pyopenvdb + +#endif // PYOPENVDB_HAS_BEEN_INCLUDED diff --git a/openvdb/python/pyutil.h b/openvdb/python/pyutil.h new file mode 100644 index 00000000..4fd63960 --- /dev/null +++ b/openvdb/python/pyutil.h @@ -0,0 +1,255 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_PYUTIL_HAS_BEEN_INCLUDED +#define OPENVDB_PYUTIL_HAS_BEEN_INCLUDED + +#include "openvdb/openvdb.h" +#include "openvdb/points/PointDataGrid.h" +#include +#include +#include // for std::pair +#include +#include + + +namespace pyutil { + +/// Return a new @c boost::python::object that borrows (i.e., doesn't +/// take over ownership of) the given @c PyObject's reference. +inline boost::python::object +pyBorrow(PyObject* obj) +{ + return boost::python::object(boost::python::handle<>(boost::python::borrowed(obj))); +} + + +/// @brief Given a @c PyObject that implements the sequence protocol +/// (e.g., a @c PyListObject), return the value of type @c ValueT +/// at index @a idx in the sequence. +/// @details Raise a Python @c TypeError exception if the value +/// at index @a idx is not convertible to type @c ValueT. +template +inline ValueT +getSequenceItem(PyObject* obj, int idx) +{ + return boost::python::extract(pyBorrow(obj)[idx]); +} + + +//////////////////////////////////////// + + +template +struct GridTraitsBase +{ + /// @brief Return the name of the Python class that wraps this grid type + /// (e.g., "FloatGrid" for openvdb::FloatGrid). + /// + /// @note This name is not the same as GridType::type(). + /// The latter returns a name like "Tree_float_5_4_3". + static const char* name(); + + /// Return the name of this grid type's value type ("bool", "float", "vec3s", etc.). + static const char* valueTypeName() + { + return openvdb::typeNameAsString(); + } + + /// @brief Return a description of this grid type. + /// + /// @note This name is generated at runtime for each call to descr(). + static const std::string descr() + { + return std::string("OpenVDB grid with voxels of type ") + valueTypeName(); + } +}; // struct GridTraitsBase + + +template +struct GridTraits: public GridTraitsBase +{ +}; + +/// Map a grid type to a traits class that derives from GridTraitsBase +/// and that defines a name() method. +#define GRID_TRAITS(_typ, _name) \ + template<> struct GridTraits<_typ>: public GridTraitsBase<_typ> { \ + static const char* name() { return _name; } \ + } + +GRID_TRAITS(openvdb::FloatGrid, "FloatGrid"); +GRID_TRAITS(openvdb::Vec3SGrid, "Vec3SGrid"); +GRID_TRAITS(openvdb::BoolGrid, "BoolGrid"); +#ifdef PY_OPENVDB_WRAP_ALL_GRID_TYPES +GRID_TRAITS(openvdb::DoubleGrid, "DoubleGrid"); +GRID_TRAITS(openvdb::Int32Grid, "Int32Grid"); +GRID_TRAITS(openvdb::Int64Grid, "Int64Grid"); +GRID_TRAITS(openvdb::Vec3IGrid, "Vec3IGrid"); +GRID_TRAITS(openvdb::Vec3DGrid, "Vec3DGrid"); +GRID_TRAITS(openvdb::points::PointDataGrid, "PointDataGrid"); +#endif + +#undef GRID_TRAITS + + +//////////////////////////////////////// + + +// Note that the elements are pointers to C strings (char**), because +// boost::python::class_::def_readonly() requires a pointer to a static member. +typedef std::pair CStringPair; + + +/// @brief Enum-like mapping from string keys to string values, with characteristics +/// of both (Python) classes and class instances (as well as NamedTuples) +/// @details +/// - (@e key, @e value) pairs can be accessed as class attributes (\"MyClass.MY_KEY\") +/// - (@e key, @e value) pairs can be accessed via dict lookup on instances +/// (\"MyClass()['MY_KEY']\") +/// - (@e key, @e value) pairs can't be modified or reassigned +/// - instances are iterable (\"for key in MyClass(): ...\") +/// +/// A @c Descr class must implement the following interface: +/// @code +/// struct MyDescr +/// { +/// // Return the Python name for the enum class. +/// static const char* name(); +/// // Return the docstring for the enum class. +/// static const char* doc(); +/// // Return the ith (key, value) pair, in the form of +/// // a pair of *pointers* to C strings +/// static CStringPair item(int i); +/// }; +/// @endcode +template +struct StringEnum +{ + /// Return the (key, value) map as a Python dict. + static boost::python::dict items() + { + static tbb::mutex sMutex; + static boost::python::dict itemDict; + if (!itemDict) { + // The first time this function is called, populate + // the static dict with (key, value) pairs. + tbb::mutex::scoped_lock lock(sMutex); + if (!itemDict) { + for (int i = 0; ; ++i) { + const CStringPair item = Descr::item(i); + OPENVDB_START_THREADSAFE_STATIC_WRITE + if (item.first) { + itemDict[boost::python::str(*item.first)] = + boost::python::str(*item.second); + } + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + else break; + } + } + } + return itemDict; + } + + /// Return the keys as a Python list of strings. + static boost::python::object keys() { return items().attr("keys")(); } + /// Return the number of keys as a Python int. + boost::python::object numItems() const + { + return boost::python::object(boost::python::len(items())); + } + /// Return the value (as a Python string) for the given key. + boost::python::object getItem(boost::python::object keyObj) const { return items()[keyObj]; } + /// Return a Python iterator over the keys. + boost::python::object iter() const { return items().attr("__iter__")(); } + + /// Register this enum. + static void wrap() + { + boost::python::class_ cls( + /*classname=*/Descr::name(), + /*docstring=*/Descr::doc()); + cls.def("keys", &StringEnum::keys, "keys() -> list") + .staticmethod("keys") + .def("__len__", &StringEnum::numItems, "__len__() -> int") + .def("__iter__", &StringEnum::iter, "__iter__() -> iterator") + .def("__getitem__", &StringEnum::getItem, "__getitem__(str) -> str") + /*end*/; + // Add a read-only, class-level attribute for each (key, value) pair. + for (int i = 0; ; ++i) { + const CStringPair item = Descr::item(i); + if (item.first) cls.def_readonly(*item.first, item.second); + else break; + } + } +}; + + +//////////////////////////////////////// + + +/// @brief From the given Python object, extract a value of type @c T. +/// +/// If the object cannot be converted to type @c T, raise a @c TypeError with a more +/// Pythonic error message (incorporating the provided class and function names, etc.) +/// than the one that would be generated by boost::python::extract(), e.g., +/// "TypeError: expected float, found str as argument 2 to FloatGrid.prune()" instead of +/// "TypeError: No registered converter was able to produce a C++ rvalue of type +/// boost::shared_ptr +inline T +extractArg( + boost::python::object obj, + const char* functionName, + const char* className = nullptr, + int argIdx = 0, // args are numbered starting from 1 + const char* expectedType = nullptr) +{ + boost::python::extract val(obj); + if (!val.check()) { + // Generate an error string of the form + // "expected , found as argument + // to .()", where and + // are optional. + std::ostringstream os; + os << "expected "; + if (expectedType) os << expectedType; else os << openvdb::typeNameAsString(); + const std::string actualType = + boost::python::extract(obj.attr("__class__").attr("__name__")); + os << ", found " << actualType << " as argument"; + if (argIdx > 0) os << " " << argIdx; + os << " to "; + if (className) os << className << "."; + os << functionName << "()"; + + PyErr_SetString(PyExc_TypeError, os.str().c_str()); + boost::python::throw_error_already_set(); + } + return val(); +} + + +//////////////////////////////////////// + + +/// Return str(val) for the given value. +template +inline std::string +str(const T& val) +{ + return boost::python::extract(boost::python::str(val)); +} + + +/// Return the name of the given Python object's class. +inline std::string +className(boost::python::object obj) +{ + std::string s = boost::python::extract( + obj.attr("__class__").attr("__name__")); + return s; +} + +} // namespace pyutil + +#endif // OPENVDB_PYUTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/python/test/TestOpenVDB.py b/openvdb/python/test/TestOpenVDB.py new file mode 100644 index 00000000..8c8f075e --- /dev/null +++ b/openvdb/python/test/TestOpenVDB.py @@ -0,0 +1,783 @@ +#!/usr/local/bin/python +# Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 + +""" +Unit tests for the OpenVDB Python module + +These are intended primarily to test the Python-to-C++ and +C++-to-Python bindings, not the OpenVDB library itself. +""" + +import os, os.path +import sys +import unittest +try: + from studio import openvdb +except ImportError: + import pyopenvdb as openvdb + + +def valueFactory(zeroValue, elemValue): + """ + Return elemValue converted to a value of the same type as zeroValue. + If zeroValue is a sequence, return a sequence of the same type and length, + with each element set to elemValue. + """ + val = zeroValue + typ = type(val) + try: + # If the type is a sequence type, return a sequence of the appropriate length. + size = len(val) + val = typ([elemValue]) * size + except TypeError: + # Return a scalar value of the appropriate type. + val = typ(elemValue) + return val + + +class TestOpenVDB(unittest.TestCase): + + def run(self, result=None, *args, **kwargs): + super(TestOpenVDB, self).run(result, *args, **kwargs) + + def setUp(self): + # Make output files and directories world-writable. + self.umask = os.umask(0) + + def tearDown(self): + os.umask(self.umask) + + + def testModule(self): + # At a minimum, BoolGrid, FloatGrid and Vec3SGrid should exist. + self.assertTrue(openvdb.BoolGrid in openvdb.GridTypes) + self.assertTrue(openvdb.FloatGrid in openvdb.GridTypes) + self.assertTrue(openvdb.Vec3SGrid in openvdb.GridTypes) + + # Verify that it is possible to construct a grid of each supported type. + for cls in openvdb.GridTypes: + grid = cls() + acc = grid.getAccessor() + acc.setValueOn((-1, -2, 3)) + self.assertEqual(grid.activeVoxelCount(), 1) + + + def testTransform(self): + xform1 = openvdb.createLinearTransform( + [[.5, 0, 0, 0], + [0, 1, 0, 0], + [0, 0, 2, 0], + [1, 2, 3, 1]]) + self.assertTrue(xform1.typeName != '') + self.assertEqual(xform1.indexToWorld((1, 1, 1)), (1.5, 3, 5)) + xform2 = xform1 + self.assertEqual(xform2, xform1) + xform2 = xform1.deepCopy() + self.assertEqual(xform2, xform1) + xform2 = openvdb.createFrustumTransform(taper=0.5, depth=100, + xyzMin=(0, 0, 0), xyzMax=(100, 100, 100), voxelSize=0.25) + self.assertNotEqual(xform2, xform1) + worldp = xform2.indexToWorld((10, 10, 10)) + worldp = [int(round(x * 1000000)) for x in worldp] + self.assertEqual(worldp, [-110000, -110000, 2500000]) + + grid = openvdb.FloatGrid() + self.assertEqual(grid.transform, openvdb.createLinearTransform()) + grid.transform = openvdb.createLinearTransform(2.0) + self.assertEqual(grid.transform, openvdb.createLinearTransform(2.0)) + + + def testGridCopy(self): + grid = openvdb.FloatGrid() + self.assertTrue(grid.sharesWith(grid)) + self.assertFalse(grid.sharesWith([])) # wrong type; Grid expected + + copyOfGrid = grid.copy() + self.assertTrue(copyOfGrid.sharesWith(grid)) + + deepCopyOfGrid = grid.deepCopy() + self.assertFalse(deepCopyOfGrid.sharesWith(grid)) + self.assertFalse(deepCopyOfGrid.sharesWith(copyOfGrid)) + + + def testGridProperties(self): + expected = { + openvdb.BoolGrid: ('bool', False, True), + openvdb.FloatGrid: ('float', 0.0, 1.0), + openvdb.Vec3SGrid: ('vec3s', (0, 0, 0), (-1, 0, 1)), + } + + for factory in expected: + valType, bg, newbg = expected[factory] + + grid = factory() + + self.assertEqual(grid.valueTypeName, valType) + def setValueType(obj): + obj.valueTypeName = 'double' + # Grid.valueTypeName is read-only, so setting it raises an exception. + self.assertRaises(AttributeError, lambda obj=grid: setValueType(obj)) + + self.assertEqual(grid.background, bg) + grid.background = newbg + self.assertEqual(grid.background, newbg) + + self.assertEqual(grid.name, '') + grid.name = 'test' + self.assertEqual(grid.name, 'test') + + self.assertFalse(grid.saveFloatAsHalf) + grid.saveFloatAsHalf = True + self.assertTrue(grid.saveFloatAsHalf) + + self.assertTrue(grid.treeDepth > 2) + + + def testGridMetadata(self): + grid = openvdb.BoolGrid() + + self.assertEqual(grid.metadata, {}) + + meta = { + 'name': 'test', + 'xyz': (-1, 0, 1), + 'xyzw': (1.0, 2.25, 3.5, 4.0), + 'intval': 42, + 'floatval': 1.25, + 'mat4val': [[1]*4]*4, + 'saveFloatAsHalf': True, + } + grid.metadata = meta + self.assertEqual(grid.metadata, meta) + + meta['xyz'] = (-100, 100, 0) + grid.updateMetadata(meta) + self.assertEqual(grid.metadata, meta) + + self.assertEqual(set(grid.iterkeys()), set(meta.keys())) + + for name in meta: + self.assertTrue(name in grid) + self.assertEqual(grid[name], meta[name]) + self.assertEqual(type(grid[name]), type(meta[name])) + + for name in grid: + self.assertTrue(name in grid) + self.assertEqual(grid[name], meta[name]) + self.assertEqual(type(grid[name]), type(meta[name])) + + self.assertTrue('xyz' in grid) + del grid['xyz'] + self.assertFalse('xyz' in grid) + grid['xyz'] = meta['xyz'] + self.assertTrue('xyz' in grid) + + grid.addStatsMetadata() + meta = grid.getStatsMetadata() + self.assertEqual(0, meta["file_voxel_count"]) + + + def testGridFill(self): + grid = openvdb.FloatGrid() + acc = grid.getAccessor() + ijk = (1, 1, 1) + + self.assertRaises(TypeError, lambda: grid.fill("", (7, 7, 7), 1, False)) + self.assertRaises(TypeError, lambda: grid.fill((0, 0, 0), "", 1, False)) + self.assertRaises(TypeError, lambda: grid.fill((0, 0, 0), (7, 7, 7), "", False)) + + self.assertFalse(acc.isValueOn(ijk)) + grid.fill((0, 0, 0), (7, 7, 7), 1, active=False) + self.assertEqual(acc.getValue(ijk), 1) + self.assertFalse(acc.isValueOn(ijk)) + + grid.fill((0, 0, 0), (7, 7, 7), 2, active=True) + self.assertEqual(acc.getValue(ijk), 2) + self.assertTrue(acc.isValueOn(ijk)) + + activeCount = grid.activeVoxelCount() + acc.setValueOn(ijk, 2.125) + self.assertEqual(grid.activeVoxelCount(), activeCount) + + grid.fill(ijk, ijk, 2.125, active=True) + self.assertEqual(acc.getValue(ijk), 2.125) + self.assertTrue(acc.isValueOn(ijk)) + self.assertEqual(grid.activeVoxelCount(), activeCount) + leafCount = grid.leafCount() + + grid.prune() + self.assertAlmostEqual(acc.getValue(ijk), 2.125) + self.assertTrue(acc.isValueOn(ijk)) + self.assertEqual(grid.leafCount(), leafCount) + self.assertEqual(grid.activeVoxelCount(), activeCount) + + grid.prune(tolerance=0.2) + self.assertEqual(grid.activeVoxelCount(), activeCount) + self.assertEqual(acc.getValue(ijk), 2.0) # median + self.assertTrue(acc.isValueOn(ijk)) + self.assertTrue(grid.leafCount() < leafCount) + + + def testGridIterators(self): + onCoords = set([(-10, -10, -10), (0, 0, 0), (1, 1, 1)]) + + for factory in openvdb.GridTypes: + grid = factory() + acc = grid.getAccessor() + for c in onCoords: + acc.setValueOn(c) + + coords = set(value.min for value in grid.iterOnValues()) + self.assertEqual(coords, onCoords) + + n = 0 + for _ in grid.iterAllValues(): + n += 1 + for _ in grid.iterOffValues(): + n -= 1 + self.assertEqual(n, len(onCoords)) + + grid = factory() + grid.fill((0, 0, 1), (18, 18, 18), grid.oneValue) # make active + activeCount = grid.activeVoxelCount() + + # Iterate over active values (via a const iterator) and verify + # that the cumulative active voxel count matches the grid's. + count = 0 + for value in grid.citerOnValues(): + count += value.count + self.assertEqual(count, activeCount) + + # Via a non-const iterator, turn off every other active value. + # Then verify that the cumulative active voxel count is half the original count. + state = True + for value in grid.iterOnValues(): + count -= value.count + value.active = state + state = not state + self.assertEqual(grid.activeVoxelCount(), activeCount / 2) + + # Verify that writing through a const iterator is not allowed. + value = grid.citerOnValues().next() + self.assertRaises(AttributeError, lambda: setattr(value, 'active', 0)) + self.assertRaises(AttributeError, lambda: setattr(value, 'depth', 0)) + # Verify that some value attributes are immutable, even given a non-const iterator. + value = grid.iterOnValues().next() + self.assertRaises(AttributeError, lambda: setattr(value, 'min', (0, 0, 0))) + self.assertRaises(AttributeError, lambda: setattr(value, 'max', (0, 0, 0))) + self.assertRaises(AttributeError, lambda: setattr(value, 'count', 1)) + + + def testMap(self): + grid = openvdb.BoolGrid() + grid.fill((-4, -4, -4), (5, 5, 5), grid.zeroValue) # make active + grid.mapOn(lambda x: not x) # replace active False values with True + n = sum(item.value for item in grid.iterOnValues()) + self.assertEqual(n, 10 * 10 * 10) + + grid = openvdb.FloatGrid() + grid.fill((-4, -4, -4), (5, 5, 5), grid.oneValue) + grid.mapOn(lambda x: x * 2) + n = sum(item.value for item in grid.iterOnValues()) + self.assertEqual(n, 10 * 10 * 10 * 2) + + grid = openvdb.Vec3SGrid() + grid.fill((-4, -4, -4), (5, 5, 5), grid.zeroValue) + grid.mapOn(lambda x: (0, 1, 0)) + n = sum(item.value[1] for item in grid.iterOnValues()) + self.assertEqual(n, 10 * 10 * 10) + + + def testValueAccessor(self): + coords = set([(-10, -10, -10), (0, 0, 0), (1, 1, 1)]) + + for factory in openvdb.GridTypes: + # skip value accessor tests for PointDataGrids (value setting methods are disabled) + if factory.valueTypeName.startswith('ptdataidx'): + continue + grid = factory() + zero, one = grid.zeroValue, grid.oneValue + acc = grid.getAccessor() + cacc = grid.getConstAccessor() + leafDepth = grid.treeDepth - 1 + + self.assertRaises(TypeError, lambda: cacc.setValueOn((5, 5, 5), zero)) + self.assertRaises(TypeError, lambda: cacc.setValueOff((5, 5, 5), zero)) + self.assertRaises(TypeError, lambda: cacc.setActiveState((5, 5, 5), True)) + self.assertRaises(TypeError, lambda: acc.setValueOn("", zero)) + self.assertRaises(TypeError, lambda: acc.setValueOff("", zero)) + if grid.valueTypeName != "bool": + self.assertRaises(TypeError, lambda: acc.setValueOn((5, 5, 5), object())) + self.assertRaises(TypeError, lambda: acc.setValueOff((5, 5, 5), object())) + + for c in coords: + grid.clear() + + # All voxels are inactive, background (0), and stored at the root. + self.assertEqual(acc.getValue(c), zero) + self.assertEqual(cacc.getValue(c), zero) + self.assertFalse(acc.isValueOn(c)) + self.assertFalse(cacc.isValueOn(c)) + self.assertEqual(acc.getValueDepth(c), -1) + self.assertEqual(cacc.getValueDepth(c), -1) + + acc.setValueOn(c) # active / 0 / leaf + self.assertEqual(acc.getValue(c), zero) + self.assertEqual(cacc.getValue(c), zero) + self.assertTrue(acc.isValueOn(c)) + self.assertTrue(cacc.isValueOn(c)) + self.assertEqual(acc.getValueDepth(c), leafDepth) + self.assertEqual(cacc.getValueDepth(c), leafDepth) + + acc.setValueOff(c, grid.oneValue) # inactive / 1 / leaf + self.assertEqual(acc.getValue(c), one) + self.assertEqual(cacc.getValue(c), one) + self.assertFalse(acc.isValueOn(c)) + self.assertFalse(cacc.isValueOn(c)) + self.assertEqual(acc.getValueDepth(c), leafDepth) + self.assertEqual(cacc.getValueDepth(c), leafDepth) + + # Verify that an accessor remains valid even after its grid is deleted + # (because the C++ wrapper retains a reference to the C++ grid). + def scoped(): + grid = factory() + acc = grid.getAccessor() + cacc = grid.getConstAccessor() + one = grid.oneValue + acc.setValueOn((0, 0, 0), one) + del grid + self.assertEqual(acc.getValue((0, 0, 0)), one) + self.assertEqual(cacc.getValue((0, 0, 0)), one) + scoped() + + + def testValueAccessorCopy(self): + xyz = (0, 0, 0) + grid = openvdb.BoolGrid() + + acc = grid.getAccessor() + self.assertEqual(acc.getValue(xyz), False) + self.assertFalse(acc.isValueOn(xyz)) + + copyOfAcc = acc.copy() + self.assertEqual(copyOfAcc.getValue(xyz), False) + self.assertFalse(copyOfAcc.isValueOn(xyz)) + + # Verify that changes made to the grid through one accessor are reflected in the other. + acc.setValueOn(xyz, True) + self.assertEqual(acc.getValue(xyz), True) + self.assertTrue(acc.isValueOn(xyz)) + self.assertEqual(copyOfAcc.getValue(xyz), True) + self.assertTrue(copyOfAcc.isValueOn(xyz)) + + copyOfAcc.setValueOff(xyz) + self.assertEqual(acc.getValue(xyz), True) + self.assertFalse(acc.isValueOn(xyz)) + self.assertEqual(copyOfAcc.getValue(xyz), True) + self.assertFalse(copyOfAcc.isValueOn(xyz)) + + # Verify that the two accessors are distinct, by checking that they + # have cached different sets of nodes. + xyz2 = (-1, -1, -1) + copyOfAcc.setValueOn(xyz2) + self.assertTrue(copyOfAcc.isCached(xyz2)) + self.assertFalse(copyOfAcc.isCached(xyz)) + self.assertTrue(acc.isCached(xyz)) + self.assertFalse(acc.isCached(xyz2)) + + + def testPickle(self): + import pickle + + # Test pickling of transforms of various types. + testXforms = [ + openvdb.createLinearTransform(voxelSize=0.1), + openvdb.createLinearTransform(matrix=[[1,0,0,0],[0,2,0,0],[0,0,3,0],[4,3,2,1]]), + openvdb.createFrustumTransform((0,0,0), (10,10,10), taper=0.8, depth=10.0), + ] + for xform in testXforms: + s = pickle.dumps(xform) + restoredXform = pickle.loads(s) + self.assertEqual(restoredXform, xform) + + # Test pickling of grids of various types. + for factory in openvdb.GridTypes: + + # Construct a grid. + grid = factory() + # Add some metadata to the grid. + meta = { 'name': 'test', 'saveFloatAsHalf': True, 'xyz': (-1, 0, 1) } + grid.metadata = meta + # Add some voxel data to the grid. + active = True + for width in range(63, 0, -10): + val = valueFactory(grid.zeroValue, width) + grid.fill((0, 0, 0), (width,)*3, val, active) + active = not active + + # Pickle the grid to a string, then unpickle the string. + s = pickle.dumps(grid) + restoredGrid = pickle.loads(s) + + # Verify that the original and unpickled grids' metadata are equal. + self.assertEqual(restoredGrid.metadata, meta) + + # Verify that the original and unpickled grids have the same active values. + for restored, original in zip(restoredGrid.iterOnValues(), grid.iterOnValues()): + self.assertEqual(restored, original) + # Verify that the original and unpickled grids have the same inactive values. + for restored, original in zip(restoredGrid.iterOffValues(), grid.iterOffValues()): + self.assertEqual(restored, original) + + + def testGridCombine(self): + # Construct two grids and add some voxel data to each. + aGrid, bGrid = openvdb.FloatGrid(), openvdb.FloatGrid(background=1.0) + for width in range(63, 1, -10): + aGrid.fill((0, 0, 0), (width,)*3, width) + bGrid.fill((0, 0, 0), (width,)*3, 2 * width) + + # Save a copy of grid A. + copyOfAGrid = aGrid.deepCopy() + + # Combine corresponding values of the two grids, storing the result in grid A. + # (Since the grids have the same topology and B's active values are twice A's, + # the function computes 2*min(a, 2*a) + 3*max(a, 2*a) = 2*a + 3*(2*a) = 8*a + # for active values, and 2*min(0, 1) + 3*max(0, 1) = 2*0 + 3*1 = 3 + # for inactive values.) + aGrid.combine(bGrid, lambda a, b: 2 * min(a, b) + 3 * max(a, b)) + + self.assertTrue(bGrid.empty()) + + # Verify that the resulting grid's values are as expected. + for original, combined in zip(copyOfAGrid.iterOnValues(), aGrid.iterOnValues()): + self.assertEqual(combined.min, original.min) + self.assertEqual(combined.max, original.max) + self.assertEqual(combined.depth, original.depth) + self.assertEqual(combined.value, 8 * original.value) + for original, combined in zip(copyOfAGrid.iterOffValues(), aGrid.iterOffValues()): + self.assertEqual(combined.min, original.min) + self.assertEqual(combined.max, original.max) + self.assertEqual(combined.depth, original.depth) + self.assertEqual(combined.value, 3) + + + def testLevelSetSphere(self): + HALF_WIDTH = 4 + sphere = openvdb.createLevelSetSphere(halfWidth=HALF_WIDTH, voxelSize=1.0, radius=100.0) + lo, hi = sphere.evalMinMax() + self.assertTrue(lo >= -HALF_WIDTH) + self.assertTrue(hi <= HALF_WIDTH) + + + def testCopyFromArray(self): + import random + import time + + # Skip this test if NumPy is not available. + try: + import numpy as np + except ImportError: + return + + # Skip this test if the OpenVDB module was built without NumPy support. + arr = np.zeros((1, 2, 1)) + grid = openvdb.FloatGrid() + try: + grid.copyFromArray(arr) + except NotImplementedError: + return + + # Verify that a non-three-dimensional array can't be copied into a grid. + grid = openvdb.FloatGrid() + self.assertRaises(TypeError, lambda: grid.copyFromArray('abc')) + arr = np.zeros((1, 2)) + self.assertRaises(ValueError, lambda: grid.copyFromArray(arr)) + + # Verify that complex-valued arrays are not supported. + arr = np.zeros((1, 2, 1), dtype = complex) + grid = openvdb.FloatGrid() + self.assertRaises(TypeError, lambda: grid.copyFromArray(arr)) + + ARRAY_DIM = 201 + BG, FG = 0, 1 + + # Generate some random voxel coordinates. + random.seed(0) + def randCoord(): + return tuple(random.randint(0, ARRAY_DIM-1) for i in range(3)) + coords = set(randCoord() for i in range(200)) + + def createArrays(): + # Test both scalar- and vec3-valued (i.e., four-dimensional) arrays. + for shape in ( + (ARRAY_DIM, ARRAY_DIM, ARRAY_DIM), # scalar array + (ARRAY_DIM, ARRAY_DIM, ARRAY_DIM, 3) # vec3 array + ): + for dtype in (np.float32, np.int32, np.float64, np.int64, np.uint32, np.bool): + # Create a NumPy array, fill it with the background value, + # then set some elements to the foreground value. + arr = np.ndarray(shape, dtype) + arr.fill(BG) + bg = arr[0, 0, 0] + for c in coords: + arr[c] = FG + + yield arr + + # Test copying from arrays of various types to grids of various types. + for cls in openvdb.GridTypes: + # skip copying test for PointDataGrids + if cls.valueTypeName.startswith('ptdataidx'): + continue + for arr in createArrays(): + isScalarArray = (len(arr.shape) == 3) + isScalarGrid = False + try: + len(cls.zeroValue) # values of vector grids are sequences, which have a length + except TypeError: + isScalarGrid = True # values of scalar grids have no length + + gridBG = valueFactory(cls.zeroValue, BG) + gridFG = valueFactory(cls.zeroValue, FG) + + # Create an empty grid. + grid = cls(gridBG) + acc = grid.getAccessor() + + # Verify that scalar arrays can't be copied into vector grids + # and vector arrays can't be copied into scalar grids. + if isScalarGrid != isScalarArray: + self.assertRaises(ValueError, lambda: grid.copyFromArray(arr)) + continue + + # Copy values from the NumPy array to the grid, marking + # background values as inactive and all other values as active. + now = time.clock() + grid.copyFromArray(arr) + elapsed = time.clock() - now + #print 'copied %d voxels from %s array to %s in %f sec' % ( + # arr.shape[0] * arr.shape[1] * arr.shape[2], + # str(arr.dtype) + ('' if isScalarArray else '[]'), + # grid.__class__.__name__, elapsed) + + # Verify that the grid's active voxels match the array's foreground elements. + self.assertEqual(grid.activeVoxelCount(), len(coords)) + for c in coords: + self.assertEqual(acc.getValue(c), gridFG) + for value in grid.iterOnValues(): + self.assertTrue(value.min in coords) + + + def testCopyToArray(self): + import random + import time + + # Skip this test if NumPy is not available. + try: + import numpy as np + except ImportError: + return + + # Skip this test if the OpenVDB module was built without NumPy support. + arr = np.zeros((1, 2, 1)) + grid = openvdb.FloatGrid() + try: + grid.copyFromArray(arr) + except NotImplementedError: + return + + # Verify that a grid can't be copied into a non-three-dimensional array. + grid = openvdb.FloatGrid() + self.assertRaises(TypeError, lambda: grid.copyToArray('abc')) + arr = np.zeros((1, 2)) + self.assertRaises(ValueError, lambda: grid.copyToArray(arr)) + + # Verify that complex-valued arrays are not supported. + arr = np.zeros((1, 2, 1), dtype = complex) + grid = openvdb.FloatGrid() + self.assertRaises(TypeError, lambda: grid.copyToArray(arr)) + + ARRAY_DIM = 201 + BG, FG = 0, 1 + + # Generate some random voxel coordinates. + random.seed(0) + def randCoord(): + return tuple(random.randint(0, ARRAY_DIM-1) for i in range(3)) + coords = set(randCoord() for i in range(200)) + + def createArrays(): + # Test both scalar- and vec3-valued (i.e., four-dimensional) arrays. + for shape in ( + (ARRAY_DIM, ARRAY_DIM, ARRAY_DIM), # scalar array + (ARRAY_DIM, ARRAY_DIM, ARRAY_DIM, 3) # vec3 array + ): + for dtype in (np.float32, np.int32, np.float64, np.int64, np.uint32, np.bool): + # Return a new NumPy array. + arr = np.ndarray(shape, dtype) + arr.fill(-100) + yield arr + + # Test copying from arrays of various types to grids of various types. + for cls in openvdb.GridTypes: + # skip copying test for PointDataGrids + if cls.valueTypeName.startswith('ptdataidx'): + continue + for arr in createArrays(): + isScalarArray = (len(arr.shape) == 3) + isScalarGrid = False + try: + len(cls.zeroValue) # values of vector grids are sequences, which have a length + except TypeError: + isScalarGrid = True # values of scalar grids have no length + + gridBG = valueFactory(cls.zeroValue, BG) + gridFG = valueFactory(cls.zeroValue, FG) + + # Create an empty grid, fill it with the background value, + # then set some elements to the foreground value. + grid = cls(gridBG) + acc = grid.getAccessor() + for c in coords: + acc.setValueOn(c, gridFG) + + # Verify that scalar grids can't be copied into vector arrays + # and vector grids can't be copied into scalar arrays. + if isScalarGrid != isScalarArray: + self.assertRaises(ValueError, lambda: grid.copyToArray(arr)) + continue + + # Copy values from the grid to the NumPy array. + now = time.clock() + grid.copyToArray(arr) + elapsed = time.clock() - now + #print 'copied %d voxels from %s to %s array in %f sec' % ( + # arr.shape[0] * arr.shape[1] * arr.shape[2], grid.__class__.__name__, + # str(arr.dtype) + ('' if isScalarArray else '[]'), elapsed) + + # Verify that the grid's active voxels match the array's foreground elements. + for c in coords: + self.assertEqual(arr[c] if isScalarArray else tuple(arr[c]), gridFG) + arr[c] = gridBG + self.assertEqual(np.amin(arr), BG) + self.assertEqual(np.amax(arr), BG) + + + def testMeshConversion(self): + import time + + # Skip this test if NumPy is not available. + try: + import numpy as np + except ImportError: + return + + # Test mesh to volume conversion. + + # Generate the vertices of a cube. + cubeVertices = [(x, y, z) for x in (0, 100) for y in (0, 100) for z in (0, 100)] + cubePoints = np.array(cubeVertices, float) + + # Generate the faces of a cube. + cubeQuads = np.array([ + (0, 1, 3, 2), # left + (0, 2, 6, 4), # front + (4, 6, 7, 5), # right + (5, 7, 3, 1), # back + (2, 3, 7, 6), # top + (0, 4, 5, 1), # bottom + ], float) + + voxelSize = 2.0 + halfWidth = 3.0 + xform = openvdb.createLinearTransform(voxelSize) + + # Only scalar, floating-point grids support createLevelSetFromPolygons() + # (and the OpenVDB module might have been compiled without DoubleGrid support). + grids = [] + for gridType in [n for n in openvdb.GridTypes + if n.__name__ in ('FloatGrid', 'DoubleGrid')]: + + # Skip this test if the OpenVDB module was built without NumPy support. + try: + grid = gridType.createLevelSetFromPolygons( + cubePoints, quads=cubeQuads, transform=xform, halfWidth=halfWidth) + except NotImplementedError: + return + + #openvdb.write('/tmp/testMeshConversion.vdb', grid) + + self.assertEqual(grid.transform, xform) + self.assertEqual(grid.background, halfWidth * voxelSize) + + dim = grid.evalActiveVoxelDim() + self.assertTrue(50 < dim[0] < 58) + self.assertTrue(50 < dim[1] < 58) + self.assertTrue(50 < dim[2] < 58) + + grids.append(grid) + + # Boolean-valued grids can't be used to store level sets. + self.assertRaises(TypeError, lambda: openvdb.BoolGrid.createLevelSetFromPolygons( + cubePoints, quads=cubeQuads, transform=xform, halfWidth=halfWidth)) + # Vector-valued grids can't be used to store level sets. + self.assertRaises(TypeError, lambda: openvdb.Vec3SGrid.createLevelSetFromPolygons( + cubePoints, quads=cubeQuads, transform=xform, halfWidth=halfWidth)) + # The "points" argument to createLevelSetFromPolygons() must be a NumPy array. + self.assertRaises(TypeError, lambda: openvdb.FloatGrid.createLevelSetFromPolygons( + cubeVertices, quads=cubeQuads, transform=xform, halfWidth=halfWidth)) + # The "points" argument to createLevelSetFromPolygons() must be a NumPy float or int array. + self.assertRaises(TypeError, lambda: openvdb.FloatGrid.createLevelSetFromPolygons( + np.array(cubeVertices, bool), quads=cubeQuads, transform=xform, halfWidth=halfWidth)) + # The "triangles" argument to createLevelSetFromPolygons() must be an N x 3 NumPy array. + self.assertRaises(TypeError, lambda: openvdb.FloatGrid.createLevelSetFromPolygons( + cubePoints, triangles=cubeQuads, transform=xform, halfWidth=halfWidth)) + + # Test volume to mesh conversion. + + # Vector-valued grids can't be meshed. + self.assertRaises(TypeError, lambda: openvdb.Vec3SGrid().convertToQuads()) + + for grid in grids: + points, quads = grid.convertToQuads() + + # These checks are intended mainly to test the Python/C++ bindings, + # not the OpenVDB volume to mesh converter. + self.assertTrue(len(points) > 8) + self.assertTrue(len(quads) > 6) + pmin, pmax = points.min(0), points.max(0) + self.assertTrue(-2 < pmin[0] < 2) + self.assertTrue(-2 < pmin[1] < 2) + self.assertTrue(-2 < pmin[2] < 2) + self.assertTrue(98 < pmax[0] < 102) + self.assertTrue(98 < pmax[1] < 102) + self.assertTrue(98 < pmax[2] < 102) + + points, triangles, quads = grid.convertToPolygons(adaptivity=1) + + self.assertTrue(len(points) > 8) + pmin, pmax = points.min(0), points.max(0) + self.assertTrue(-2 < pmin[0] < 2) + self.assertTrue(-2 < pmin[1] < 2) + self.assertTrue(-2 < pmin[2] < 2) + self.assertTrue(98 < pmax[0] < 102) + self.assertTrue(98 < pmax[1] < 102) + self.assertTrue(98 < pmax[2] < 102) + + +if __name__ == '__main__': + print('Testing %s' % os.path.dirname(openvdb.__file__)) + sys.stdout.flush() + + args = sys.argv + + # Unlike CppUnit, PyUnit doesn't use the "-t" flag to identify + # test names, so for consistency, strip out any "-t" arguments, + # so that, e.g., "TestOpenVDB.py -t TestOpenVDB.testTransform" + # is equivalent to "TestOpenVDB.py TestOpenVDB.testTransform". + args = [a for a in args if a != '-t'] + + unittest.main(argv=args) + diff --git a/openvdb/tools/ChangeBackground.h b/openvdb/tools/ChangeBackground.h new file mode 100644 index 00000000..19f80440 --- /dev/null +++ b/openvdb/tools/ChangeBackground.h @@ -0,0 +1,247 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file ChangeBackground.h +/// +/// @brief Efficient multi-threaded replacement of the background +/// values in tree. +/// +/// @author Ken Museth + +#ifndef OPENVDB_TOOLS_ChangeBACKGROUND_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_ChangeBACKGROUND_HAS_BEEN_INCLUDED + +#include // for isNegative and negative +#include // for Index typedef +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Replace the background value in all the nodes of a tree. +/// @details The sign of the background value is preserved, and only +/// inactive values equal to the old background value are replaced. +/// +/// @note If a LeafManager is used the cached leaf nodes are reused, +/// resulting in slightly better overall performance. +/// +/// @param tree Tree (or LeafManager) that will have its background value changed +/// @param background the new background value +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 32) +template +inline void +changeBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& background, + bool threaded = true, + size_t grainSize = 32); + + +/// @brief Replace the background value in all the nodes of a floating-point tree +/// containing a symmetric narrow-band level set. +/// @details All inactive values will be set to +| @a halfWidth | if outside +/// and -| @a halfWidth | if inside, where @a halfWidth is half the width +/// of the symmetric narrow band. +/// +/// @note This method is faster than changeBackground since it does not +/// perform tests to see if inactive values are equal to the old background value. +/// @note If a LeafManager is used the cached leaf nodes are reused, +/// resulting in slightly better overall performance. +/// +/// @param tree Tree (or LeafManager) that will have its background value changed +/// @param halfWidth half of the width of the symmetric narrow band +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 32) +/// +/// @throw ValueError if @a halfWidth is negative (as defined by math::isNegative) +template +inline void +changeLevelSetBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& halfWidth, + bool threaded = true, + size_t grainSize = 32); + + +/// @brief Replace the background values in all the nodes of a floating-point tree +/// containing a possibly asymmetric narrow-band level set. +/// @details All inactive values will be set to +| @a outsideWidth | if outside +/// and -| @a insideWidth | if inside, where @a outsideWidth is the outside +/// width of the narrow band and @a insideWidth is its inside width. +/// +/// @note This method is faster than changeBackground since it does not +/// perform tests to see if inactive values are equal to the old background value. +/// @note If a LeafManager is used the cached leaf nodes are reused, +/// resulting in slightly better overall performance. +/// +/// @param tree Tree (or LeafManager) that will have its background value changed +/// @param outsideWidth The width of the outside of the narrow band +/// @param insideWidth The width of the inside of the narrow band +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 32) +/// +/// @throw ValueError if @a outsideWidth is negative or @a insideWidth is +/// not negative (as defined by math::isNegative) +template +inline void +changeAsymmetricLevelSetBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& outsideWidth, + const typename TreeOrLeafManagerT::ValueType& insideWidth, + bool threaded = true, + size_t grainSize = 32); + + +////////////////////////////////////////////////////// + + +// Replaces the background value in a Tree of any type. +template +class ChangeBackgroundOp +{ +public: + typedef typename TreeOrLeafManagerT::ValueType ValueT; + typedef typename TreeOrLeafManagerT::RootNodeType RootT; + typedef typename TreeOrLeafManagerT::LeafNodeType LeafT; + + + ChangeBackgroundOp(const TreeOrLeafManagerT& tree, const ValueT& newValue) + : mOldValue(tree.root().background()) + , mNewValue(newValue) + { + } + void operator()(RootT& root) const + { + for (typename RootT::ValueOffIter it = root.beginValueOff(); it; ++it) this->set(it); + root.setBackground(mNewValue, false); + } + void operator()(LeafT& node) const + { + for (typename LeafT::ValueOffIter it = node.beginValueOff(); it; ++it) this->set(it); + } + template + void operator()(NodeT& node) const + { + typename NodeT::NodeMaskType mask = node.getValueOffMask(); + for (typename NodeT::ValueOnIter it(mask.beginOn(), &node); it; ++it) this->set(it); + } +private: + + template + inline void set(IterT& iter) const + { + if (math::isApproxEqual(*iter, mOldValue)) { + iter.setValue(mNewValue); + } else if (math::isApproxEqual(*iter, math::negative(mOldValue))) { + iter.setValue(math::negative(mNewValue)); + } + } + const ValueT mOldValue, mNewValue; +};// ChangeBackgroundOp + + +// Replaces the background value in a Tree assumed to represent a +// level set. It is generally faster than ChangeBackgroundOp. +// Note that is follows the sign-convention that outside is positive +// and inside is negative! +template +class ChangeLevelSetBackgroundOp +{ +public: + typedef typename TreeOrLeafManagerT::ValueType ValueT; + typedef typename TreeOrLeafManagerT::RootNodeType RootT; + typedef typename TreeOrLeafManagerT::LeafNodeType LeafT; + + /// @brief Constructor for asymmetric narrow-bands + ChangeLevelSetBackgroundOp(const ValueT& outside, const ValueT& inside) + : mOutside(outside) + , mInside(inside) + { + if (math::isNegative(mOutside)) { + OPENVDB_THROW(ValueError, + "ChangeLevelSetBackgroundOp: the outside value cannot be negative!"); + } + if (!math::isNegative(mInside)) { + OPENVDB_THROW(ValueError, + "ChangeLevelSetBackgroundOp: the inside value must be negative!"); + } + } + void operator()(RootT& root) const + { + for (typename RootT::ValueOffIter it = root.beginValueOff(); it; ++it) this->set(it); + root.setBackground(mOutside, false); + } + void operator()(LeafT& node) const + { + for(typename LeafT::ValueOffIter it = node.beginValueOff(); it; ++it) this->set(it); + } + template + void operator()(NodeT& node) const + { + typedef typename NodeT::ValueOffIter IterT; + for (IterT it(node.getChildMask().beginOff(), &node); it; ++it) this->set(it); + } +private: + + template + inline void set(IterT& iter) const + { + //this is safe since we know ValueType is_floating_point + ValueT& v = const_cast(*iter); + v = v < 0 ? mInside : mOutside; + } + const ValueT mOutside, mInside; +};// ChangeLevelSetBackgroundOp + + +template +inline void +changeBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& background, + bool threaded, + size_t grainSize) +{ + tree::NodeManager linearTree(tree); + ChangeBackgroundOp op(tree, background); + linearTree.foreachTopDown(op, threaded, grainSize); +} + + +template +inline void +changeAsymmetricLevelSetBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& outsideValue, + const typename TreeOrLeafManagerT::ValueType& insideValue, + bool threaded, + size_t grainSize) +{ + tree::NodeManager linearTree(tree); + ChangeLevelSetBackgroundOp op(outsideValue, insideValue); + linearTree.foreachTopDown(op, threaded, grainSize); +} + + +// If the narrow-band is symmetric only one background value is required +template +inline void +changeLevelSetBackground( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& background, + bool threaded, + size_t grainSize) +{ + changeAsymmetricLevelSetBackground( + tree, background, math::negative(background), threaded, grainSize); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_CHANGEBACKGROUND_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Clip.h b/openvdb/tools/Clip.h new file mode 100644 index 00000000..5c982914 --- /dev/null +++ b/openvdb/tools/Clip.h @@ -0,0 +1,567 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Clip.h +/// +/// @brief Functions to clip a grid against a bounding box, a camera frustum, +/// or another grid's active voxel topology + +#ifndef OPENVDB_TOOLS_CLIP_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_CLIP_HAS_BEEN_INCLUDED + +#include +#include // for math::isNegative() +#include // for math::NonlinearFrustumMap +#include +#include "GridTransformer.h" // for tools::resampleToMatch() +#include "Prune.h" +#include +#include +#include // for std::enable_if, std::is_same +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Clip the given grid against a world-space bounding box +/// and return a new grid containing the result. +/// @param grid the grid to be clipped +/// @param bbox a world-space bounding box +/// @param keepInterior if true, discard voxels that lie outside the bounding box; +/// if false, discard voxels that lie inside the bounding box +/// @warning Clipping a level set will likely produce a grid that is +/// no longer a valid level set. +template +inline typename GridType::Ptr +clip(const GridType& grid, const BBoxd& bbox, bool keepInterior = true); + +/// @brief Clip the given grid against a frustum and return a new grid containing the result. +/// @param grid the grid to be clipped +/// @param frustum a frustum map +/// @param keepInterior if true, discard voxels that lie outside the frustum; +/// if false, discard voxels that lie inside the frustum +/// @warning Clipping a level set will likely produce a grid that is +/// no longer a valid level set. +template +inline typename GridType::Ptr +clip(const GridType& grid, const math::NonlinearFrustumMap& frustum, bool keepInterior = true); + +/// @brief Clip a grid against the active voxels of another grid +/// and return a new grid containing the result. +/// @param grid the grid to be clipped +/// @param mask a grid whose active voxels form a boolean clipping mask +/// @param keepInterior if true, discard voxels that do not intersect the mask; +/// if false, discard voxels that intersect the mask +/// @details The mask grid need not have the same transform as the source grid. +/// Also, if the mask grid is a level set, consider using tools::sdfInteriorMask +/// to construct a new mask comprising the interior (rather than the narrow band) +/// of the level set. +/// @warning Clipping a level set will likely produce a grid that is +/// no longer a valid level set. +template +inline typename GridType::Ptr +clip(const GridType& grid, const Grid& mask, bool keepInterior = true); + + +//////////////////////////////////////// + + +namespace clip_internal { + +// Use either MaskGrids or BoolGrids internally. +// (MaskGrids have a somewhat lower memory footprint.) +using MaskValueType = ValueMask; +//using MaskValueType = bool; + + +template +class MaskInteriorVoxels +{ +public: + using ValueT = typename TreeT::ValueType; + using LeafNodeT = typename TreeT::LeafNodeType; + + MaskInteriorVoxels(const TreeT& tree): mAcc(tree) {} + + template + void operator()(LeafNodeType& leaf, size_t /*leafIndex*/) const + { + const auto* refLeaf = mAcc.probeConstLeaf(leaf.origin()); + if (refLeaf) { + for (auto iter = leaf.beginValueOff(); iter; ++iter) { + const auto pos = iter.pos(); + leaf.setActiveState(pos, math::isNegative(refLeaf->getValue(pos))); + } + } + } + +private: + tree::ValueAccessor mAcc; +}; + + +//////////////////////////////////////// + + +template +class CopyLeafNodes +{ +public: + using MaskTreeT = typename TreeT::template ValueConverter::Type; + using MaskLeafManagerT = tree::LeafManager; + + CopyLeafNodes(const TreeT&, const MaskLeafManagerT&); + + void run(bool threaded = true); + + typename TreeT::Ptr tree() const { return mNewTree; } + + CopyLeafNodes(CopyLeafNodes&, tbb::split); + void operator()(const tbb::blocked_range&); + void join(const CopyLeafNodes& rhs) { mNewTree->merge(*rhs.mNewTree); } + +private: + const MaskTreeT* mClipMask; + const TreeT* mTree; + const MaskLeafManagerT* mLeafNodes; + typename TreeT::Ptr mNewTree; +}; + + +template +CopyLeafNodes::CopyLeafNodes(const TreeT& tree, const MaskLeafManagerT& leafNodes) + : mTree(&tree) + , mLeafNodes(&leafNodes) + , mNewTree(new TreeT(mTree->background())) +{ +} + + +template +CopyLeafNodes::CopyLeafNodes(CopyLeafNodes& rhs, tbb::split) + : mTree(rhs.mTree) + , mLeafNodes(rhs.mLeafNodes) + , mNewTree(new TreeT(mTree->background())) +{ +} + + +template +void +CopyLeafNodes::run(bool threaded) +{ + if (threaded) tbb::parallel_reduce(mLeafNodes->getRange(), *this); + else (*this)(mLeafNodes->getRange()); +} + + +template +void +CopyLeafNodes::operator()(const tbb::blocked_range& range) +{ + tree::ValueAccessor acc(*mNewTree); + tree::ValueAccessor refAcc(*mTree); + + for (auto n = range.begin(); n != range.end(); ++n) { + const auto& maskLeaf = mLeafNodes->leaf(n); + const auto& ijk = maskLeaf.origin(); + const auto* refLeaf = refAcc.probeConstLeaf(ijk); + + auto* newLeaf = acc.touchLeaf(ijk); + + if (refLeaf) { + for (auto it = maskLeaf.cbeginValueOn(); it; ++it) { + const auto pos = it.pos(); + newLeaf->setValueOnly(pos, refLeaf->getValue(pos)); + newLeaf->setActiveState(pos, refLeaf->isValueOn(pos)); + } + } else { + typename TreeT::ValueType value; + bool isActive = refAcc.probeValue(ijk, value); + + for (auto it = maskLeaf.cbeginValueOn(); it; ++it) { + const auto pos = it.pos(); + newLeaf->setValueOnly(pos, value); + newLeaf->setActiveState(pos, isActive); + } + } + } +} + + +//////////////////////////////////////// + + +struct BoolSampler +{ + static const char* name() { return "bin"; } + static int radius() { return 2; } + static bool mipmap() { return false; } + static bool consistent() { return true; } + + template + static bool sample(const TreeT& inTree, + const Vec3R& inCoord, typename TreeT::ValueType& result) + { + return inTree.probeValue(Coord::floor(inCoord), result); + } +}; + + +//////////////////////////////////////// + + +// Convert a grid of one type to a grid of another type +template +struct ConvertGrid +{ + using FromGridCPtrT = typename FromGridT::ConstPtr; + using ToGridPtrT = typename ToGridT::Ptr; + ToGridPtrT operator()(const FromGridCPtrT& grid) { return ToGridPtrT(new ToGridT(*grid)); } +}; + +// Partial specialization that avoids copying when +// the input and output grid types are the same +template +struct ConvertGrid +{ + using GridCPtrT = typename GridT::ConstPtr; + GridCPtrT operator()(const GridCPtrT& grid) { return grid; } +}; + + +//////////////////////////////////////// + + +// Convert a grid of arbitrary type to a mask grid with the same tree configuration +// and return a pointer to the new grid. +/// @private +template +inline typename std::enable_if::value, + typename GridT::template ValueConverter::Type::Ptr>::type +convertToMaskGrid(const GridT& grid) +{ + using MaskGridT = typename GridT::template ValueConverter::Type; + auto mask = MaskGridT::create(/*background=*/false); + mask->topologyUnion(grid); + mask->setTransform(grid.constTransform().copy()); + return mask; +} + +// Overload that avoids any processing if the input grid is already a mask grid +/// @private +template +inline typename std::enable_if::value, + typename GridT::ConstPtr>::type +convertToMaskGrid(const GridT& grid) +{ + return grid.copy(); // shallow copy +} + + +//////////////////////////////////////// + + +/// @private +template +inline typename GridType::Ptr +doClip( + const GridType& grid, + const typename GridType::template ValueConverter::Type& clipMask, + bool keepInterior) +{ + using TreeT = typename GridType::TreeType; + using MaskTreeT = typename GridType::TreeType::template ValueConverter::Type; + + const auto gridClass = grid.getGridClass(); + const auto& tree = grid.tree(); + + MaskTreeT gridMask(false); + gridMask.topologyUnion(tree); + + if (gridClass == GRID_LEVEL_SET) { + tree::LeafManager leafNodes(gridMask); + leafNodes.foreach(MaskInteriorVoxels(tree)); + + tree::ValueAccessor acc(tree); + + typename MaskTreeT::ValueAllIter iter(gridMask); + iter.setMaxDepth(MaskTreeT::ValueAllIter::LEAF_DEPTH - 1); + + for ( ; iter; ++iter) { + iter.setActiveState(math::isNegative(acc.getValue(iter.getCoord()))); + } + } + + if (keepInterior) { + gridMask.topologyIntersection(clipMask.constTree()); + } else { + gridMask.topologyDifference(clipMask.constTree()); + } + + auto outGrid = grid.copyWithNewTree(); + { + // Copy voxel values and states. + tree::LeafManager leafNodes(gridMask); + CopyLeafNodes maskOp(tree, leafNodes); + maskOp.run(); + outGrid->setTree(maskOp.tree()); + } + { + // Copy tile values and states. + tree::ValueAccessor refAcc(tree); + tree::ValueAccessor maskAcc(gridMask); + + typename TreeT::ValueAllIter it(outGrid->tree()); + it.setMaxDepth(TreeT::ValueAllIter::LEAF_DEPTH - 1); + for ( ; it; ++it) { + Coord ijk = it.getCoord(); + + if (maskAcc.isValueOn(ijk)) { + typename TreeT::ValueType value; + bool isActive = refAcc.probeValue(ijk, value); + + it.setValue(value); + if (!isActive) it.setValueOff(); + } + } + } + + outGrid->setTransform(grid.transform().copy()); + if (gridClass != GRID_LEVEL_SET) outGrid->setGridClass(gridClass); + + return outGrid; +} + +} // namespace clip_internal + + +//////////////////////////////////////// + + +/// @private +template +inline typename GridType::Ptr +clip(const GridType& grid, const BBoxd& bbox, bool keepInterior) +{ + using MaskValueT = clip_internal::MaskValueType; + using MaskGridT = typename GridType::template ValueConverter::Type; + + // Transform the world-space bounding box into the source grid's index space. + Vec3d idxMin, idxMax; + math::calculateBounds(grid.constTransform(), bbox.min(), bbox.max(), idxMin, idxMax); + CoordBBox region(Coord::floor(idxMin), Coord::floor(idxMax)); + // Construct a boolean mask grid that is true inside the index-space bounding box + // and false everywhere else. + MaskGridT clipMask(/*background=*/false); + clipMask.fill(region, /*value=*/true, /*active=*/true); + + return clip_internal::doClip(grid, clipMask, keepInterior); +} + + +/// @private +template +inline typename SrcGridType::Ptr +clip(const SrcGridType& srcGrid, const Grid& clipGrid, bool keepInterior) +{ + using MaskValueT = clip_internal::MaskValueType; + using ClipGridType = Grid; + using SrcMaskGridType = typename SrcGridType::template ValueConverter::Type; + using ClipMaskGridType = typename ClipGridType::template ValueConverter::Type; + + // Convert the clipping grid to a boolean-valued mask grid with the same tree configuration. + auto maskGrid = clip_internal::convertToMaskGrid(clipGrid); + + // Resample the mask grid into the source grid's index space. + if (srcGrid.constTransform() != maskGrid->constTransform()) { + auto resampledMask = ClipMaskGridType::create(/*background=*/false); + resampledMask->setTransform(srcGrid.constTransform().copy()); + tools::resampleToMatch(*maskGrid, *resampledMask); + tools::prune(resampledMask->tree()); + maskGrid = resampledMask; + } + + // Convert the mask grid to a mask grid with the same tree configuration as the source grid. + auto clipMask = clip_internal::ConvertGrid< + /*from=*/ClipMaskGridType, /*to=*/SrcMaskGridType>()(maskGrid); + + // Clip the source grid against the mask grid. + return clip_internal::doClip(srcGrid, *clipMask, keepInterior); +} + + +/// @private +template +inline typename GridType::Ptr +clip(const GridType& inGrid, const math::NonlinearFrustumMap& frustumMap, bool keepInterior) +{ + using ValueT = typename GridType::ValueType; + using TreeT = typename GridType::TreeType; + using LeafT = typename TreeT::LeafNodeType; + + const auto& gridXform = inGrid.transform(); + const auto frustumIndexBBox = frustumMap.getBBox(); + + // Return true if index-space point (i,j,k) lies inside the frustum. + auto frustumContainsCoord = [&](const Coord& ijk) -> bool { + auto xyz = gridXform.indexToWorld(ijk); + xyz = frustumMap.applyInverseMap(xyz); + return frustumIndexBBox.isInside(xyz); + }; + + // Return the frustum index-space bounding box of the corners of + // the given grid index-space bounding box. + auto toFrustumIndexSpace = [&](const CoordBBox& inBBox) -> BBoxd { + const Coord bounds[2] = { inBBox.min(), inBBox.max() }; + Coord ijk; + BBoxd outBBox; + for (int i = 0; i < 8; ++i) { + ijk[0] = bounds[(i & 1) >> 0][0]; + ijk[1] = bounds[(i & 2) >> 1][1]; + ijk[2] = bounds[(i & 4) >> 2][2]; + auto xyz = gridXform.indexToWorld(ijk); + xyz = frustumMap.applyInverseMap(xyz); + outBBox.expand(xyz); + } + return outBBox; + }; + + // Construct an output grid with the same transform and metadata as the input grid. + auto outGrid = inGrid.copyWithNewTree(); + if (outGrid->getGridClass() == GRID_LEVEL_SET) { + // After clipping, a level set grid might no longer be a valid SDF. + outGrid->setGridClass(GRID_UNKNOWN); + } + + const auto& bg = outGrid->background(); + + auto outAcc = outGrid->getAccessor(); + + // Copy active and inactive tiles that intersect the clipping region + // from the input grid to the output grid. + // ("Clipping region" refers to either the interior or the exterior + // of the frustum, depending on the value of keepInterior.) + auto tileIter = inGrid.beginValueAll(); + tileIter.setMaxDepth(GridType::ValueAllIter::LEAF_DEPTH - 1); + CoordBBox tileBBox; + for ( ; tileIter; ++tileIter) { + const bool tileActive = tileIter.isValueOn(); + const auto& tileValue = tileIter.getValue(); + + // Skip background tiles. + if (!tileActive && math::isApproxEqual(tileValue, bg)) continue; + + // Transform the tile's bounding box into frustum index space. + tileIter.getBoundingBox(tileBBox); + const auto tileFrustumBBox = toFrustumIndexSpace(tileBBox); + + // Determine whether any or all of the tile intersects the clipping region. + enum class CopyTile { kNone, kPartial, kFull }; + auto copyTile = CopyTile::kNone; + if (keepInterior) { + if (frustumIndexBBox.isInside(tileFrustumBBox)) { + copyTile = CopyTile::kFull; + } else if (frustumIndexBBox.hasOverlap(tileFrustumBBox)) { + copyTile = CopyTile::kPartial; + } + } else { + if (!frustumIndexBBox.hasOverlap(tileFrustumBBox)) { + copyTile = CopyTile::kFull; + } else if (!frustumIndexBBox.isInside(tileFrustumBBox)) { + copyTile = CopyTile::kPartial; + } + } + switch (copyTile) { + case CopyTile::kNone: + break; + case CopyTile::kFull: + // Copy the entire tile. + outAcc.addTile(tileIter.getLevel(), tileBBox.min(), tileValue, tileActive); + break; + case CopyTile::kPartial: + // Copy only voxels inside the clipping region. + for (std::vector bboxVec = { tileBBox }; !bboxVec.empty(); ) { + // For efficiency, subdivide sufficiently large tiles and discard + // subregions based on additional bounding box intersection tests. + // The mimimum subregion size is chosen so that cost of the + // bounding box test is comparable to testing every voxel. + if (bboxVec.back().volume() > 64 && bboxVec.back().is_divisible()) { + // Subdivide this region in-place and append the other half to the list. + bboxVec.emplace_back(bboxVec.back(), tbb::split{}); + continue; + } + auto subBBox = bboxVec.back(); + bboxVec.pop_back(); + + // Discard the subregion if it lies completely outside the clipping region. + if (keepInterior) { + if (!frustumIndexBBox.hasOverlap(toFrustumIndexSpace(subBBox))) continue; + } else { + if (frustumIndexBBox.isInside(toFrustumIndexSpace(subBBox))) continue; + } + + // Test every voxel within the subregion. + for (const auto& ijk: subBBox) { + if (frustumContainsCoord(ijk) == keepInterior) { + if (tileActive) { + outAcc.setValueOn(ijk, tileValue); + } else { + outAcc.setValueOff(ijk, tileValue); + } + } + } + } + break; + } + } + tools::prune(outGrid->tree()); + + // Ensure that the output grid has the same leaf node topology as the input grid, + // with the exception of leaf nodes that lie completely outside the clipping region. + // (This operation is serial.) + for (auto leafIter = inGrid.constTree().beginLeaf(); leafIter; ++leafIter) { + const auto leafBBox = leafIter->getNodeBoundingBox(); + const auto leafFrustumBBox = toFrustumIndexSpace(leafBBox); + if (keepInterior) { + if (frustumIndexBBox.hasOverlap(leafFrustumBBox)) { + outAcc.touchLeaf(leafBBox.min()); + } + } else { + if (!frustumIndexBBox.hasOverlap(leafFrustumBBox) + || !frustumIndexBBox.isInside(leafFrustumBBox)) + { + outAcc.touchLeaf(leafBBox.min()); + } + } + } + + // In parallel across output leaf nodes, copy leaf voxels + // from the input grid to the output grid. + tree::LeafManager outLeafNodes{outGrid->tree()}; + outLeafNodes.foreach( + [&](LeafT& leaf, size_t /*idx*/) { + auto inAcc = inGrid.getConstAccessor(); + ValueT val; + for (auto voxelIter = leaf.beginValueAll(); voxelIter; ++voxelIter) { + const auto ijk = voxelIter.getCoord(); + if (frustumContainsCoord(ijk) == keepInterior) { + const bool active = inAcc.probeValue(ijk, val); + voxelIter.setValue(val); + voxelIter.setValueOn(active); + } + } + } + ); + + return outGrid; +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_CLIP_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Composite.h b/openvdb/tools/Composite.h new file mode 100644 index 00000000..4d2a2015 --- /dev/null +++ b/openvdb/tools/Composite.h @@ -0,0 +1,1238 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Composite.h +/// +/// @brief Functions to efficiently perform various compositing operations on grids +/// +/// @authors Peter Cucka, Mihai Alden, Ken Museth + +#ifndef OPENVDB_TOOLS_COMPOSITE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_COMPOSITE_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include // for isExactlyEqual() +#include "ValueTransformer.h" // for transformValues() +#include "Prune.h"// for prune +#include "SignedFloodFill.h" // for signedFloodFill() + +#include +#include +#include +#include +#include + +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Given two level set grids, replace the A grid with the union of A and B. +/// @throw ValueError if the background value of either grid is not greater than zero. +/// @note This operation always leaves the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void csgUnion(GridOrTreeT& a, GridOrTreeT& b, bool prune = true); +/// @brief Given two level set grids, replace the A grid with the intersection of A and B. +/// @throw ValueError if the background value of either grid is not greater than zero. +/// @note This operation always leaves the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void csgIntersection(GridOrTreeT& a, GridOrTreeT& b, bool prune = true); +/// @brief Given two level set grids, replace the A grid with the difference A / B. +/// @throw ValueError if the background value of either grid is not greater than zero. +/// @note This operation always leaves the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void csgDifference(GridOrTreeT& a, GridOrTreeT& b, bool prune = true); + +/// @brief Threaded CSG union operation that produces a new grid or tree from +/// immutable inputs. +/// @return The CSG union of the @a and @b level set inputs. +template OPENVDB_STATIC_SPECIALIZATION +inline typename GridOrTreeT::Ptr csgUnionCopy(const GridOrTreeT& a, const GridOrTreeT& b); +/// @brief Threaded CSG intersection operation that produces a new grid or tree from +/// immutable inputs. +/// @return The CSG intersection of the @a and @b level set inputs. +template OPENVDB_STATIC_SPECIALIZATION +inline typename GridOrTreeT::Ptr csgIntersectionCopy(const GridOrTreeT& a, const GridOrTreeT& b); +/// @brief Threaded CSG difference operation that produces a new grid or tree from +/// immutable inputs. +/// @return The CSG difference of the @a and @b level set inputs. +template OPENVDB_STATIC_SPECIALIZATION +inline typename GridOrTreeT::Ptr csgDifferenceCopy(const GridOrTreeT& a, const GridOrTreeT& b); + +/// @brief Given grids A and B, compute max(a, b) per voxel (using sparse traversal). +/// Store the result in the A grid and leave the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void compMax(GridOrTreeT& a, GridOrTreeT& b); +/// @brief Given grids A and B, compute min(a, b) per voxel (using sparse traversal). +/// Store the result in the A grid and leave the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void compMin(GridOrTreeT& a, GridOrTreeT& b); +/// @brief Given grids A and B, compute a + b per voxel (using sparse traversal). +/// Store the result in the A grid and leave the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void compSum(GridOrTreeT& a, GridOrTreeT& b); +/// @brief Given grids A and B, compute a * b per voxel (using sparse traversal). +/// Store the result in the A grid and leave the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void compMul(GridOrTreeT& a, GridOrTreeT& b); +/// @brief Given grids A and B, compute a / b per voxel (using sparse traversal). +/// Store the result in the A grid and leave the B grid empty. +template OPENVDB_STATIC_SPECIALIZATION +inline void compDiv(GridOrTreeT& a, GridOrTreeT& b); + +/// Copy the active voxels of B into A. +template OPENVDB_STATIC_SPECIALIZATION +inline void compReplace(GridOrTreeT& a, const GridOrTreeT& b); + + +//////////////////////////////////////// + + +namespace composite { + +// composite::min() and composite::max() for non-vector types compare with operator<(). +template inline +const typename std::enable_if::IsVec, T>::type& // = T if T is not a vector type +min(const T& a, const T& b) { return std::min(a, b); } + +template inline +const typename std::enable_if::IsVec, T>::type& +max(const T& a, const T& b) { return std::max(a, b); } + + +// composite::min() and composite::max() for OpenVDB vector types compare by magnitude. +template inline +const typename std::enable_if::IsVec, T>::type& // = T if T is a vector type +min(const T& a, const T& b) +{ + const typename T::ValueType aMag = a.lengthSqr(), bMag = b.lengthSqr(); + return (aMag < bMag ? a : (bMag < aMag ? b : std::min(a, b))); +} + +template inline +const typename std::enable_if::IsVec, T>::type& +max(const T& a, const T& b) +{ + const typename T::ValueType aMag = a.lengthSqr(), bMag = b.lengthSqr(); + return (aMag < bMag ? b : (bMag < aMag ? a : std::max(a, b))); +} + + +template inline +typename std::enable_if::value, T>::type // = T if T is not an integer type +divide(const T& a, const T& b) { return a / b; } + +template inline +typename std::enable_if::value, T>::type // = T if T is an integer type +divide(const T& a, const T& b) +{ + const T zero(0); + if (b != zero) return a / b; + if (a == zero) return 0; + return (a > 0 ? std::numeric_limits::max() : -std::numeric_limits::max()); +} + +// If b is true, return a / 1 = a. +// If b is false and a is true, return 1 / 0 = inf = MAX_BOOL = 1 = a. +// If b is false and a is false, return 0 / 0 = NaN = 0 = a. +inline bool divide(bool a, bool /*b*/) { return a; } + + +enum CSGOperation { CSG_UNION, CSG_INTERSECTION, CSG_DIFFERENCE }; + +template +struct BuildPrimarySegment +{ + using ValueType = typename TreeType::ValueType; + using TreePtrType = typename TreeType::Ptr; + using LeafNodeType = typename TreeType::LeafNodeType; + using NodeMaskType = typename LeafNodeType::NodeMaskType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at >::type; + + BuildPrimarySegment(const TreeType& lhs, const TreeType& rhs) + : mSegment(new TreeType(lhs.background())) + , mLhsTree(&lhs) + , mRhsTree(&rhs) + { + } + + void operator()() const + { + std::vector leafNodes; + + { + std::vector internalNodes; + mLhsTree->getNodes(internalNodes); + + ProcessInternalNodes op(internalNodes, *mRhsTree, *mSegment, leafNodes); + tbb::parallel_reduce(tbb::blocked_range(0, internalNodes.size()), op); + } + + ProcessLeafNodes op(leafNodes, *mRhsTree, *mSegment); + tbb::parallel_reduce(tbb::blocked_range(0, leafNodes.size()), op); + } + + TreePtrType& segment() { return mSegment; } + +private: + + struct ProcessInternalNodes { + + ProcessInternalNodes(std::vector& lhsNodes, + const TreeType& rhsTree, TreeType& outputTree, + std::vector& outputLeafNodes) + : mLhsNodes(lhsNodes.empty() ? nullptr : &lhsNodes.front()) + , mRhsTree(&rhsTree) + , mLocalTree(mRhsTree->background()) + , mOutputTree(&outputTree) + , mLocalLeafNodes() + , mOutputLeafNodes(&outputLeafNodes) + { + } + + ProcessInternalNodes(ProcessInternalNodes& other, tbb::split) + : mLhsNodes(other.mLhsNodes) + , mRhsTree(other.mRhsTree) + , mLocalTree(mRhsTree->background()) + , mOutputTree(&mLocalTree) + , mLocalLeafNodes() + , mOutputLeafNodes(&mLocalLeafNodes) + { + } + + void join(ProcessInternalNodes& other) + { + mOutputTree->merge(*other.mOutputTree); + mOutputLeafNodes->insert(mOutputLeafNodes->end(), + other.mOutputLeafNodes->begin(), other.mOutputLeafNodes->end()); + } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor rhsAcc(*mRhsTree); + tree::ValueAccessor outputAcc(*mOutputTree); + + std::vector tmpLeafNodes; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const InternalNodeType& lhsNode = *mLhsNodes[n]; + const Coord& ijk = lhsNode.origin(); + const InternalNodeType * rhsNode = + rhsAcc.template probeConstNode(ijk); + + if (rhsNode) { + lhsNode.getNodes(*mOutputLeafNodes); + } else { + if (Operation == CSG_INTERSECTION) { + if (rhsAcc.getValue(ijk) < ValueType(0.0)) { + tmpLeafNodes.clear(); + lhsNode.getNodes(tmpLeafNodes); + for (size_t i = 0, I = tmpLeafNodes.size(); i < I; ++i) { + outputAcc.addLeaf(new LeafNodeType(*tmpLeafNodes[i])); + } + } + } else { // Union & Difference + if (!(rhsAcc.getValue(ijk) < ValueType(0.0))) { + tmpLeafNodes.clear(); + lhsNode.getNodes(tmpLeafNodes); + for (size_t i = 0, I = tmpLeafNodes.size(); i < I; ++i) { + outputAcc.addLeaf(new LeafNodeType(*tmpLeafNodes[i])); + } + } + } + } + } // end range loop + } + + InternalNodeType const * const * const mLhsNodes; + TreeType const * const mRhsTree; + TreeType mLocalTree; + TreeType * const mOutputTree; + + std::vector mLocalLeafNodes; + std::vector * const mOutputLeafNodes; + }; // struct ProcessInternalNodes + + struct ProcessLeafNodes { + + ProcessLeafNodes(std::vector& lhsNodes, + const TreeType& rhsTree, TreeType& output) + : mLhsNodes(lhsNodes.empty() ? nullptr : &lhsNodes.front()) + , mRhsTree(&rhsTree) + , mLocalTree(mRhsTree->background()) + , mOutputTree(&output) + { + } + + ProcessLeafNodes(ProcessLeafNodes& other, tbb::split) + : mLhsNodes(other.mLhsNodes) + , mRhsTree(other.mRhsTree) + , mLocalTree(mRhsTree->background()) + , mOutputTree(&mLocalTree) + { + } + + void join(ProcessLeafNodes& rhs) { mOutputTree->merge(*rhs.mOutputTree); } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor rhsAcc(*mRhsTree); + tree::ValueAccessor outputAcc(*mOutputTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const LeafNodeType& lhsNode = *mLhsNodes[n]; + const Coord& ijk = lhsNode.origin(); + + const LeafNodeType* rhsNodePt = rhsAcc.probeConstLeaf(ijk); + + if (rhsNodePt) { // combine overlapping nodes + + LeafNodeType* outputNode = outputAcc.touchLeaf(ijk); + ValueType * outputData = outputNode->buffer().data(); + NodeMaskType& outputMask = outputNode->getValueMask(); + + const ValueType * lhsData = lhsNode.buffer().data(); + const NodeMaskType& lhsMask = lhsNode.getValueMask(); + + const ValueType * rhsData = rhsNodePt->buffer().data(); + const NodeMaskType& rhsMask = rhsNodePt->getValueMask(); + + if (Operation == CSG_INTERSECTION) { + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + const bool fromRhs = lhsData[pos] < rhsData[pos]; + outputData[pos] = fromRhs ? rhsData[pos] : lhsData[pos]; + outputMask.set(pos, fromRhs ? rhsMask.isOn(pos) : lhsMask.isOn(pos)); + } + } else if (Operation == CSG_DIFFERENCE){ + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + const ValueType rhsVal = math::negative(rhsData[pos]); + const bool fromRhs = lhsData[pos] < rhsVal; + outputData[pos] = fromRhs ? rhsVal : lhsData[pos]; + outputMask.set(pos, fromRhs ? rhsMask.isOn(pos) : lhsMask.isOn(pos)); + } + } else { // Union + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + const bool fromRhs = lhsData[pos] > rhsData[pos]; + outputData[pos] = fromRhs ? rhsData[pos] : lhsData[pos]; + outputMask.set(pos, fromRhs ? rhsMask.isOn(pos) : lhsMask.isOn(pos)); + } + } + + } else { + if (Operation == CSG_INTERSECTION) { + if (rhsAcc.getValue(ijk) < ValueType(0.0)) { + outputAcc.addLeaf(new LeafNodeType(lhsNode)); + } + } else { // Union & Difference + if (!(rhsAcc.getValue(ijk) < ValueType(0.0))) { + outputAcc.addLeaf(new LeafNodeType(lhsNode)); + } + } + } + } // end range loop + } + + LeafNodeType const * const * const mLhsNodes; + TreeType const * const mRhsTree; + TreeType mLocalTree; + TreeType * const mOutputTree; + }; // struct ProcessLeafNodes + + TreePtrType mSegment; + TreeType const * const mLhsTree; + TreeType const * const mRhsTree; +}; // struct BuildPrimarySegment + + +template +struct BuildSecondarySegment +{ + using ValueType = typename TreeType::ValueType; + using TreePtrType = typename TreeType::Ptr; + using LeafNodeType = typename TreeType::LeafNodeType; + using NodeMaskType = typename LeafNodeType::NodeMaskType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at >::type; + + BuildSecondarySegment(const TreeType& lhs, const TreeType& rhs) + : mSegment(new TreeType(lhs.background())) + , mLhsTree(&lhs) + , mRhsTree(&rhs) + { + } + + void operator()() const + { + std::vector leafNodes; + + { + std::vector internalNodes; + mRhsTree->getNodes(internalNodes); + + ProcessInternalNodes op(internalNodes, *mLhsTree, *mSegment, leafNodes); + tbb::parallel_reduce(tbb::blocked_range(0, internalNodes.size()), op); + } + + ProcessLeafNodes op(leafNodes, *mLhsTree, *mSegment); + tbb::parallel_reduce(tbb::blocked_range(0, leafNodes.size()), op); + } + + TreePtrType& segment() { return mSegment; } + +private: + + struct ProcessInternalNodes { + + ProcessInternalNodes(std::vector& rhsNodes, + const TreeType& lhsTree, TreeType& outputTree, + std::vector& outputLeafNodes) + : mRhsNodes(rhsNodes.empty() ? nullptr : &rhsNodes.front()) + , mLhsTree(&lhsTree) + , mLocalTree(mLhsTree->background()) + , mOutputTree(&outputTree) + , mLocalLeafNodes() + , mOutputLeafNodes(&outputLeafNodes) + { + } + + ProcessInternalNodes(ProcessInternalNodes& other, tbb::split) + : mRhsNodes(other.mRhsNodes) + , mLhsTree(other.mLhsTree) + , mLocalTree(mLhsTree->background()) + , mOutputTree(&mLocalTree) + , mLocalLeafNodes() + , mOutputLeafNodes(&mLocalLeafNodes) + { + } + + void join(ProcessInternalNodes& other) + { + mOutputTree->merge(*other.mOutputTree); + mOutputLeafNodes->insert(mOutputLeafNodes->end(), + other.mOutputLeafNodes->begin(), other.mOutputLeafNodes->end()); + } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor lhsAcc(*mLhsTree); + tree::ValueAccessor outputAcc(*mOutputTree); + + std::vector tmpLeafNodes; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const InternalNodeType& rhsNode = *mRhsNodes[n]; + const Coord& ijk = rhsNode.origin(); + const InternalNodeType * lhsNode = + lhsAcc.template probeConstNode(ijk); + + if (lhsNode) { + rhsNode.getNodes(*mOutputLeafNodes); + } else { + if (Operation == CSG_INTERSECTION) { + if (lhsAcc.getValue(ijk) < ValueType(0.0)) { + tmpLeafNodes.clear(); + rhsNode.getNodes(tmpLeafNodes); + for (size_t i = 0, I = tmpLeafNodes.size(); i < I; ++i) { + outputAcc.addLeaf(new LeafNodeType(*tmpLeafNodes[i])); + } + } + } else if (Operation == CSG_DIFFERENCE) { + if (lhsAcc.getValue(ijk) < ValueType(0.0)) { + tmpLeafNodes.clear(); + rhsNode.getNodes(tmpLeafNodes); + for (size_t i = 0, I = tmpLeafNodes.size(); i < I; ++i) { + LeafNodeType* outputNode = new LeafNodeType(*tmpLeafNodes[i]); + outputNode->negate(); + outputAcc.addLeaf(outputNode); + } + } + } else { // Union + if (!(lhsAcc.getValue(ijk) < ValueType(0.0))) { + tmpLeafNodes.clear(); + rhsNode.getNodes(tmpLeafNodes); + for (size_t i = 0, I = tmpLeafNodes.size(); i < I; ++i) { + outputAcc.addLeaf(new LeafNodeType(*tmpLeafNodes[i])); + } + } + } + } + } // end range loop + } + + InternalNodeType const * const * const mRhsNodes; + TreeType const * const mLhsTree; + TreeType mLocalTree; + TreeType * const mOutputTree; + + std::vector mLocalLeafNodes; + std::vector * const mOutputLeafNodes; + }; // struct ProcessInternalNodes + + struct ProcessLeafNodes { + + ProcessLeafNodes(std::vector& rhsNodes, + const TreeType& lhsTree, TreeType& output) + : mRhsNodes(rhsNodes.empty() ? nullptr : &rhsNodes.front()) + , mLhsTree(&lhsTree) + , mLocalTree(mLhsTree->background()) + , mOutputTree(&output) + { + } + + ProcessLeafNodes(ProcessLeafNodes& rhs, tbb::split) + : mRhsNodes(rhs.mRhsNodes) + , mLhsTree(rhs.mLhsTree) + , mLocalTree(mLhsTree->background()) + , mOutputTree(&mLocalTree) + { + } + + void join(ProcessLeafNodes& rhs) { mOutputTree->merge(*rhs.mOutputTree); } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor lhsAcc(*mLhsTree); + tree::ValueAccessor outputAcc(*mOutputTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const LeafNodeType& rhsNode = *mRhsNodes[n]; + const Coord& ijk = rhsNode.origin(); + + const LeafNodeType* lhsNode = lhsAcc.probeConstLeaf(ijk); + + if (!lhsNode) { + if (Operation == CSG_INTERSECTION) { + if (lhsAcc.getValue(ijk) < ValueType(0.0)) { + outputAcc.addLeaf(new LeafNodeType(rhsNode)); + } + } else if (Operation == CSG_DIFFERENCE) { + if (lhsAcc.getValue(ijk) < ValueType(0.0)) { + LeafNodeType* outputNode = new LeafNodeType(rhsNode); + outputNode->negate(); + outputAcc.addLeaf(outputNode); + } + } else { // Union + if (!(lhsAcc.getValue(ijk) < ValueType(0.0))) { + outputAcc.addLeaf(new LeafNodeType(rhsNode)); + } + } + } + } // end range loop + } + + LeafNodeType const * const * const mRhsNodes; + TreeType const * const mLhsTree; + TreeType mLocalTree; + TreeType * const mOutputTree; + }; // struct ProcessLeafNodes + + TreePtrType mSegment; + TreeType const * const mLhsTree; + TreeType const * const mRhsTree; +}; // struct BuildSecondarySegment + + +template +inline typename TreeType::Ptr +doCSGCopy(const TreeType& lhs, const TreeType& rhs) +{ + BuildPrimarySegment primary(lhs, rhs); + BuildSecondarySegment secondary(lhs, rhs); + + // Exploiting nested parallelism + tbb::task_group tasks; + tasks.run(primary); + tasks.run(secondary); + tasks.wait(); + + primary.segment()->merge(*secondary.segment()); + + // The leafnode (level = 0) sign is set in the segment construction. + tools::signedFloodFill(*primary.segment(), /*threaded=*/true, /*grainSize=*/1, /*minLevel=*/1); + + return primary.segment(); +} + + +//////////////////////////////////////// + + +template +struct GridOrTreeConstructor +{ + using TreeTypePtr = typename TreeType::Ptr; + static TreeTypePtr construct(const TreeType&, TreeTypePtr& tree) { return tree; } +}; + + +template +struct GridOrTreeConstructor > +{ + using GridType = Grid; + using GridTypePtr = typename Grid::Ptr; + using TreeTypePtr = typename TreeType::Ptr; + + static GridTypePtr construct(const GridType& grid, TreeTypePtr& tree) { + GridTypePtr maskGrid(GridType::create(tree)); + maskGrid->setTransform(grid.transform().copy()); + maskGrid->insertMeta(grid); + return maskGrid; + } +}; + + +//////////////////////////////////////// + +/// @cond COMPOSITE_INTERNAL +/// List of pairs of leaf node pointers +template +using LeafPairList = std::vector>; +/// @endcond + +/// @cond COMPOSITE_INTERNAL +/// Transfers leaf nodes from a source tree into a +/// desitnation tree, unless it already exists in the destination tree +/// in which case pointers to both leaf nodes are added to a list for +/// subsequent compositing operations. +template +inline void transferLeafNodes(TreeT &srcTree, TreeT &dstTree, + LeafPairList &overlapping) +{ + using LeafT = typename TreeT::LeafNodeType; + tree::ValueAccessor acc(dstTree);//destination + std::vector srcLeafNodes; + srcLeafNodes.reserve(srcTree.leafCount()); + srcTree.stealNodes(srcLeafNodes); + srcTree.clear(); + for (LeafT *srcLeaf : srcLeafNodes) { + LeafT *dstLeaf = acc.probeLeaf(srcLeaf->origin()); + if (dstLeaf) { + overlapping.emplace_back(dstLeaf, srcLeaf);//dst, src + } else { + acc.addLeaf(srcLeaf); + } + } +} +/// @endcond + +/// @cond COMPOSITE_INTERNAL +/// Template specailization of compActiveLeafVoxels +template +inline +typename std::enable_if< + !std::is_same::value && + !std::is_same::value && + std::is_same::value>::type +doCompActiveLeafVoxels(TreeT &srcTree, TreeT &dstTree, OpT op) +{ + using LeafT = typename TreeT::LeafNodeType; + LeafPairList overlapping;//dst, src + transferLeafNodes(srcTree, dstTree, overlapping); + + using RangeT = tbb::blocked_range; + tbb::parallel_for(RangeT(0, overlapping.size()), [op, &overlapping](const RangeT& r) { + for (auto i = r.begin(); i != r.end(); ++i) { + LeafT *dstLeaf = overlapping[i].first, *srcLeaf = overlapping[i].second; + dstLeaf->getValueMask() |= srcLeaf->getValueMask(); + auto *ptr = dstLeaf->buffer().data(); + for (auto v = srcLeaf->cbeginValueOn(); v; ++v) op(ptr[v.pos()], *v); + delete srcLeaf; + } + }); +} +/// @endcond + +/// @cond COMPOSITE_INTERNAL +/// Template specailization of compActiveLeafVoxels +template +inline +typename std::enable_if< + std::is_same::value && + std::is_same::value>::type +doCompActiveLeafVoxels(TreeT &srcTree, TreeT &dstTree, OpT) +{ + using LeafT = typename TreeT::LeafNodeType; + LeafPairList overlapping;//dst, src + transferLeafNodes(srcTree, dstTree, overlapping); + + using RangeT = tbb::blocked_range; + tbb::parallel_for(RangeT(0, overlapping.size()), [&overlapping](const RangeT& r) { + for (auto i = r.begin(); i != r.end(); ++i) { + overlapping[i].first->getValueMask() |= overlapping[i].second->getValueMask(); + delete overlapping[i].second; + } + }); +} + +/// @cond COMPOSITE_INTERNAL +/// Template specailization of compActiveLeafVoxels +template +inline +typename std::enable_if< + std::is_same::value && + !std::is_same::value>::type +doCompActiveLeafVoxels(TreeT &srcTree, TreeT &dstTree, OpT op) +{ + using LeafT = typename TreeT::LeafNodeType; + LeafPairList overlapping;//dst, src + transferLeafNodes(srcTree, dstTree, overlapping); + + using RangeT = tbb::blocked_range; + using WordT = typename LeafT::Buffer::WordType; + tbb::parallel_for(RangeT(0, overlapping.size()), [op, &overlapping](const RangeT& r) { + for (auto i = r.begin(); i != r.end(); ++i) { + LeafT *dstLeaf = overlapping[i].first, *srcLeaf = overlapping[i].second; + WordT *w1 = dstLeaf->buffer().data(); + const WordT *w2 = srcLeaf->buffer().data(); + const WordT *w3 = &(srcLeaf->getValueMask().template getWord(0)); + for (Index32 n = LeafT::Buffer::WORD_COUNT; n--; ++w1) { + WordT tmp = *w1, state = *w3++; + op (tmp, *w2++); + *w1 = (state & tmp) | (~state & *w1);//inactive values are unchanged + } + dstLeaf->getValueMask() |= srcLeaf->getValueMask(); + delete srcLeaf; + } + }); +} +/// @endcond + +/// @cond COMPOSITE_INTERNAL +/// Default functor for compActiveLeafVoxels +template +struct CopyOp +{ + using ValueT = typename TreeT::ValueType; + CopyOp() = default; + void operator()(ValueT& dst, const ValueT& src) const { dst = src; } +}; +/// @endcond + +} // namespace composite + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compMax(GridOrTreeT& aTree, GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + using ValueT = typename TreeT::ValueType; + struct Local { + static inline void op(CombineArgs& args) { + args.setResult(composite::max(args.a(), args.b())); + } + }; + Adapter::tree(aTree).combineExtended(Adapter::tree(bTree), Local::op, /*prune=*/false); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compMin(GridOrTreeT& aTree, GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + using ValueT = typename TreeT::ValueType; + struct Local { + static inline void op(CombineArgs& args) { + args.setResult(composite::min(args.a(), args.b())); + } + }; + Adapter::tree(aTree).combineExtended(Adapter::tree(bTree), Local::op, /*prune=*/false); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compSum(GridOrTreeT& aTree, GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + struct Local { + static inline void op(CombineArgs& args) { + args.setResult(args.a() + args.b()); + } + }; + Adapter::tree(aTree).combineExtended(Adapter::tree(bTree), Local::op, /*prune=*/false); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compMul(GridOrTreeT& aTree, GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + struct Local { + static inline void op(CombineArgs& args) { + args.setResult(args.a() * args.b()); + } + }; + Adapter::tree(aTree).combineExtended(Adapter::tree(bTree), Local::op, /*prune=*/false); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compDiv(GridOrTreeT& aTree, GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + struct Local { + static inline void op(CombineArgs& args) { + args.setResult(composite::divide(args.a(), args.b())); + } + }; + Adapter::tree(aTree).combineExtended(Adapter::tree(bTree), Local::op, /*prune=*/false); +} + + +//////////////////////////////////////// + + +template +struct CompReplaceOp +{ + TreeT* const aTree; + + CompReplaceOp(TreeT& _aTree): aTree(&_aTree) {} + + /// @note fill operation is not thread safe + void operator()(const typename TreeT::ValueOnCIter& iter) const + { + CoordBBox bbox; + iter.getBoundingBox(bbox); + aTree->fill(bbox, *iter); + } + + void operator()(const typename TreeT::LeafCIter& leafIter) const + { + tree::ValueAccessor acc(*aTree); + for (typename TreeT::LeafCIter::LeafNodeT::ValueOnCIter iter = + leafIter->cbeginValueOn(); iter; ++iter) + { + acc.setValue(iter.getCoord(), *iter); + } + } +}; + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +compReplace(GridOrTreeT& aTree, const GridOrTreeT& bTree) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + using ValueOnCIterT = typename TreeT::ValueOnCIter; + + // Copy active states (but not values) from B to A. + Adapter::tree(aTree).topologyUnion(Adapter::tree(bTree)); + + CompReplaceOp op(Adapter::tree(aTree)); + + // Copy all active tile values from B to A. + ValueOnCIterT iter = bTree.cbeginValueOn(); + iter.setMaxDepth(iter.getLeafDepth() - 1); // don't descend into leaf nodes + foreach(iter, op, /*threaded=*/false); + + // Copy all active voxel values from B to A. + foreach(Adapter::tree(bTree).cbeginLeaf(), op); +} + + +//////////////////////////////////////// + + +/// Base visitor class for CSG operations +/// (not intended to be used polymorphically, so no virtual functions) +template +class CsgVisitorBase +{ +public: + using TreeT = TreeType; + using ValueT = typename TreeT::ValueType; + using ChildIterT = typename TreeT::LeafNodeType::ChildAllIter; + + enum { STOP = 3 }; + + CsgVisitorBase(const TreeT& aTree, const TreeT& bTree): + mAOutside(aTree.background()), + mAInside(math::negative(mAOutside)), + mBOutside(bTree.background()), + mBInside(math::negative(mBOutside)) + { + const ValueT zero = zeroVal(); + if (!(mAOutside > zero)) { + OPENVDB_THROW(ValueError, + "expected grid A outside value > 0, got " << mAOutside); + } + if (!(mAInside < zero)) { + OPENVDB_THROW(ValueError, + "expected grid A inside value < 0, got " << mAInside); + } + if (!(mBOutside > zero)) { + OPENVDB_THROW(ValueError, + "expected grid B outside value > 0, got " << mBOutside); + } + if (!(mBInside < zero)) { + OPENVDB_THROW(ValueError, + "expected grid B outside value < 0, got " << mBOutside); + } + } + +protected: + ValueT mAOutside, mAInside, mBOutside, mBInside; +}; + + +//////////////////////////////////////// + + +template +struct CsgUnionVisitor: public CsgVisitorBase +{ + using TreeT = TreeType; + using ValueT = typename TreeT::ValueType; + using ChildIterT = typename TreeT::LeafNodeType::ChildAllIter; + + enum { STOP = CsgVisitorBase::STOP }; + + CsgUnionVisitor(const TreeT& a, const TreeT& b): CsgVisitorBase(a, b) {} + + /// Don't process nodes that are at different tree levels. + template + inline int operator()(AIterT&, BIterT&) { return 0; } + + /// Process root and internal nodes. + template + inline int operator()(IterT& aIter, IterT& bIter) + { + ValueT aValue = zeroVal(); + typename IterT::ChildNodeType* aChild = aIter.probeChild(aValue); + if (!aChild && aValue < zeroVal()) { + // A is an inside tile. Leave it alone and stop traversing this branch. + return STOP; + } + + ValueT bValue = zeroVal(); + typename IterT::ChildNodeType* bChild = bIter.probeChild(bValue); + if (!bChild && bValue < zeroVal()) { + // B is an inside tile. Make A an inside tile and stop traversing this branch. + aIter.setValue(this->mAInside); + aIter.setValueOn(bIter.isValueOn()); + delete aChild; + return STOP; + } + + if (!aChild && aValue > zeroVal()) { + // A is an outside tile. If B has a child, transfer it to A, + // otherwise leave A alone. + if (bChild) { + bIter.setValue(this->mBOutside); + bIter.setValueOff(); + bChild->resetBackground(this->mBOutside, this->mAOutside); + aIter.setChild(bChild); // transfer child + delete aChild; + } + return STOP; + } + + // If A has a child and B is an outside tile, stop traversing this branch. + // Continue traversal only if A and B both have children. + return (aChild && bChild) ? 0 : STOP; + } + + /// Process leaf node values. + inline int operator()(ChildIterT& aIter, ChildIterT& bIter) + { + ValueT aValue, bValue; + aIter.probeValue(aValue); + bIter.probeValue(bValue); + if (aValue > bValue) { // a = min(a, b) + aIter.setValue(bValue); + aIter.setValueOn(bIter.isValueOn()); + } + return 0; + } +}; + + + +//////////////////////////////////////// + + +template +struct CsgIntersectVisitor: public CsgVisitorBase +{ + using TreeT = TreeType; + using ValueT = typename TreeT::ValueType; + using ChildIterT = typename TreeT::LeafNodeType::ChildAllIter; + + enum { STOP = CsgVisitorBase::STOP }; + + CsgIntersectVisitor(const TreeT& a, const TreeT& b): CsgVisitorBase(a, b) {} + + /// Don't process nodes that are at different tree levels. + template + inline int operator()(AIterT&, BIterT&) { return 0; } + + /// Process root and internal nodes. + template + inline int operator()(IterT& aIter, IterT& bIter) + { + ValueT aValue = zeroVal(); + typename IterT::ChildNodeType* aChild = aIter.probeChild(aValue); + if (!aChild && !(aValue < zeroVal())) { + // A is an outside tile. Leave it alone and stop traversing this branch. + return STOP; + } + + ValueT bValue = zeroVal(); + typename IterT::ChildNodeType* bChild = bIter.probeChild(bValue); + if (!bChild && !(bValue < zeroVal())) { + // B is an outside tile. Make A an outside tile and stop traversing this branch. + aIter.setValue(this->mAOutside); + aIter.setValueOn(bIter.isValueOn()); + delete aChild; + return STOP; + } + + if (!aChild && aValue < zeroVal()) { + // A is an inside tile. If B has a child, transfer it to A, + // otherwise leave A alone. + if (bChild) { + bIter.setValue(this->mBOutside); + bIter.setValueOff(); + bChild->resetBackground(this->mBOutside, this->mAOutside); + aIter.setChild(bChild); // transfer child + delete aChild; + } + return STOP; + } + + // If A has a child and B is an outside tile, stop traversing this branch. + // Continue traversal only if A and B both have children. + return (aChild && bChild) ? 0 : STOP; + } + + /// Process leaf node values. + inline int operator()(ChildIterT& aIter, ChildIterT& bIter) + { + ValueT aValue, bValue; + aIter.probeValue(aValue); + bIter.probeValue(bValue); + if (aValue < bValue) { // a = max(a, b) + aIter.setValue(bValue); + aIter.setValueOn(bIter.isValueOn()); + } + return 0; + } +}; + + +//////////////////////////////////////// + + +template +struct CsgDiffVisitor: public CsgVisitorBase +{ + using TreeT = TreeType; + using ValueT = typename TreeT::ValueType; + using ChildIterT = typename TreeT::LeafNodeType::ChildAllIter; + + enum { STOP = CsgVisitorBase::STOP }; + + CsgDiffVisitor(const TreeT& a, const TreeT& b): CsgVisitorBase(a, b) {} + + /// Don't process nodes that are at different tree levels. + template + inline int operator()(AIterT&, BIterT&) { return 0; } + + /// Process root and internal nodes. + template + inline int operator()(IterT& aIter, IterT& bIter) + { + ValueT aValue = zeroVal(); + typename IterT::ChildNodeType* aChild = aIter.probeChild(aValue); + if (!aChild && !(aValue < zeroVal())) { + // A is an outside tile. Leave it alone and stop traversing this branch. + return STOP; + } + + ValueT bValue = zeroVal(); + typename IterT::ChildNodeType* bChild = bIter.probeChild(bValue); + if (!bChild && bValue < zeroVal()) { + // B is an inside tile. Make A an inside tile and stop traversing this branch. + aIter.setValue(this->mAOutside); + aIter.setValueOn(bIter.isValueOn()); + delete aChild; + return STOP; + } + + if (!aChild && aValue < zeroVal()) { + // A is an inside tile. If B has a child, transfer it to A, + // otherwise leave A alone. + if (bChild) { + bIter.setValue(this->mBOutside); + bIter.setValueOff(); + bChild->resetBackground(this->mBOutside, this->mAOutside); + aIter.setChild(bChild); // transfer child + bChild->negate(); + delete aChild; + } + return STOP; + } + + // If A has a child and B is an outside tile, stop traversing this branch. + // Continue traversal only if A and B both have children. + return (aChild && bChild) ? 0 : STOP; + } + + /// Process leaf node values. + inline int operator()(ChildIterT& aIter, ChildIterT& bIter) + { + ValueT aValue, bValue; + aIter.probeValue(aValue); + bIter.probeValue(bValue); + bValue = math::negative(bValue); + if (aValue < bValue) { // a = max(a, -b) + aIter.setValue(bValue); + aIter.setValueOn(bIter.isValueOn()); + } + return 0; + } +}; + + +//////////////////////////////////////// + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +csgUnion(GridOrTreeT& a, GridOrTreeT& b, bool prune) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + TreeT &aTree = Adapter::tree(a), &bTree = Adapter::tree(b); + CsgUnionVisitor visitor(aTree, bTree); + aTree.visit2(bTree, visitor); + if (prune) tools::pruneLevelSet(aTree); +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +csgIntersection(GridOrTreeT& a, GridOrTreeT& b, bool prune) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + TreeT &aTree = Adapter::tree(a), &bTree = Adapter::tree(b); + CsgIntersectVisitor visitor(aTree, bTree); + aTree.visit2(bTree, visitor); + if (prune) tools::pruneLevelSet(aTree); +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +csgDifference(GridOrTreeT& a, GridOrTreeT& b, bool prune) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + TreeT &aTree = Adapter::tree(a), &bTree = Adapter::tree(b); + CsgDiffVisitor visitor(aTree, bTree); + aTree.visit2(bTree, visitor); + if (prune) tools::pruneLevelSet(aTree); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline typename GridOrTreeT::Ptr +csgUnionCopy(const GridOrTreeT& a, const GridOrTreeT& b) +{ + using Adapter = TreeAdapter; + using TreePtrT = typename Adapter::TreeType::Ptr; + + TreePtrT output = composite::doCSGCopy( + Adapter::tree(a), Adapter::tree(b)); + + return composite::GridOrTreeConstructor::construct(a, output); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline typename GridOrTreeT::Ptr +csgIntersectionCopy(const GridOrTreeT& a, const GridOrTreeT& b) +{ + using Adapter = TreeAdapter; + using TreePtrT = typename Adapter::TreeType::Ptr; + + TreePtrT output = composite::doCSGCopy( + Adapter::tree(a), Adapter::tree(b)); + + return composite::GridOrTreeConstructor::construct(a, output); +} + + +template +OPENVDB_STATIC_SPECIALIZATION inline typename GridOrTreeT::Ptr +csgDifferenceCopy(const GridOrTreeT& a, const GridOrTreeT& b) +{ + using Adapter = TreeAdapter; + using TreePtrT = typename Adapter::TreeType::Ptr; + + TreePtrT output = composite::doCSGCopy( + Adapter::tree(a), Adapter::tree(b)); + + return composite::GridOrTreeConstructor::construct(a, output); +} + +//////////////////////////////////////////////////////// + +/// @brief Composite the active values in leaf nodes, i.e. active +/// voxels, of a source tree into a destination tree. +/// +/// @param srcTree source tree from which active voxels are composited. +/// +/// @param dstTree destination tree into which active voxels are composited. +/// +/// @param op a functor of the form void op(T& dst, const T& src), +/// where @c T is the @c ValueType of the tree, that composites +/// a source value into a destination value. By default +/// it copies the value from src to dst. +/// +/// @details All active voxels in the source tree will +/// be active in the destination tree, and their value is +/// determined by a use-defined functor (OpT op) that operates on the +/// source and destination values. The only exception is when +/// the tree type is MaskTree, in which case no functor is +/// needed since by defintion a MaskTree has no values (only topology). +/// +/// @warning This function only operated on leaf node values, +/// i.e. tile values are ignored. +template > +inline void +compActiveLeafVoxels(TreeT &srcTree, TreeT &dstTree, OpT op = composite::CopyOp()) +{ + composite::doCompActiveLeafVoxels(srcTree, dstTree, op); +} + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_COMPOSITE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Dense.h b/openvdb/tools/Dense.h new file mode 100644 index 00000000..e42dc52f --- /dev/null +++ b/openvdb/tools/Dense.h @@ -0,0 +1,582 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Dense.h +/// +/// @brief This file defines a simple dense grid and efficient +/// converters to and from VDB grids. + +#ifndef OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include "Prune.h" +#include +#include +#include +#include +#include // for std::pair +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Populate a dense grid with the values of voxels from a sparse grid, +/// where the sparse grid intersects the dense grid. +/// @param sparse an OpenVDB grid or tree from which to copy values +/// @param dense the dense grid into which to copy values +/// @param serial if false, process voxels in parallel +template +void +copyToDense( + const GridOrTreeT& sparse, + DenseT& dense, + bool serial = false); + + +/// @brief Populate a sparse grid with the values of all of the voxels of a dense grid. +/// @param dense the dense grid from which to copy values +/// @param sparse an OpenVDB grid or tree into which to copy values +/// @param tolerance values in the dense grid that are within this tolerance of the sparse +/// grid's background value become inactive background voxels or tiles in the sparse grid +/// @param serial if false, process voxels in parallel +template +void +copyFromDense( + const DenseT& dense, + GridOrTreeT& sparse, + const typename GridOrTreeT::ValueType& tolerance, + bool serial = false); + + +//////////////////////////////////////// + +/// We currently support the following two 3D memory layouts for dense +/// volumes: XYZ, i.e. x is the fastest moving index, and ZYX, i.e. z +/// is the fastest moving index. The ZYX memory layout leads to nested +/// for-loops of the order x, y, z, which we find to be the most +/// intuitive. Hence, ZYX is the layout used throughout VDB. However, +/// other data structures, e.g. Houdini and Maya, employ the XYZ +/// layout. Clearly a dense volume with the ZYX layout converts more +/// efficiently to a VDB, but we support both for convenience. +enum MemoryLayout { LayoutXYZ, LayoutZYX }; + +/// @brief Base class for Dense which is defined below. +/// @note The constructor of this class is protected to prevent direct +/// instantiation. +template class DenseBase; + +/// @brief Partial template specialization of DenseBase. +/// @note ZYX is the memory-layout in VDB. It leads to nested +/// for-loops of the order x, y, z which we find to be the most intuitive. +template +class DenseBase +{ +public: + /// @brief Return the linear offset into this grid's value array given by + /// unsigned coordinates (i, j, k), i.e., coordinates relative to + /// the origin of this grid's bounding box. + /// + /// @warning The input coordinates are assume to be relative to + /// the grid's origin, i.e. minimum of its index bounding box! + inline size_t coordToOffset(size_t i, size_t j, size_t k) const { return i*mX + j*mY + k; } + + /// @brief Return the local coordinate corresponding to the specified linear offset. + /// + /// @warning The returned coordinate is relative to the origin of this + /// grid's bounding box so add dense.origin() to get absolute coordinates. + inline Coord offsetToLocalCoord(size_t n) const + { + const size_t x = n / mX; + n -= mX*x; + const size_t y = n / mY; + return Coord(Coord::ValueType(x), Coord::ValueType(y), Coord::ValueType(n - mY*y)); + } + + /// @brief Return the stride of the array in the x direction ( = dimY*dimZ). + /// @note This method is required by both CopyToDense and CopyFromDense. + inline size_t xStride() const { return mX; } + + /// @brief Return the stride of the array in the y direction ( = dimZ). + /// @note This method is required by both CopyToDense and CopyFromDense. + inline size_t yStride() const { return mY; } + + /// @brief Return the stride of the array in the z direction ( = 1). + /// @note This method is required by both CopyToDense and CopyFromDense. + static size_t zStride() { return 1; } + +protected: + /// Protected constructor so as to prevent direct instantiation + DenseBase(const CoordBBox& bbox) : mBBox(bbox), mY(bbox.dim()[2]), mX(mY*bbox.dim()[1]) {} + + const CoordBBox mBBox;//signed coordinates of the domain represented by the grid + const size_t mY, mX;//strides in the y and x direction +};// end of DenseBase + +/// @brief Partial template specialization of DenseBase. +/// @note This is the memory-layout employed in Houdini and Maya. It leads +/// to nested for-loops of the order z, y, x. +template +class DenseBase +{ +public: + /// @brief Return the linear offset into this grid's value array given by + /// unsigned coordinates (i, j, k), i.e., coordinates relative to + /// the origin of this grid's bounding box. + /// + /// @warning The input coordinates are assume to be relative to + /// the grid's origin, i.e. minimum of its index bounding box! + inline size_t coordToOffset(size_t i, size_t j, size_t k) const { return i + j*mY + k*mZ; } + + /// @brief Return the index coordinate corresponding to the specified linear offset. + /// + /// @warning The returned coordinate is relative to the origin of this + /// grid's bounding box so add dense.origin() to get absolute coordinates. + inline Coord offsetToLocalCoord(size_t n) const + { + const size_t z = n / mZ; + n -= mZ*z; + const size_t y = n / mY; + return Coord(Coord::ValueType(n - mY*y), Coord::ValueType(y), Coord::ValueType(z)); + } + + /// @brief Return the stride of the array in the x direction ( = 1). + /// @note This method is required by both CopyToDense and CopyFromDense. + static size_t xStride() { return 1; } + + /// @brief Return the stride of the array in the y direction ( = dimX). + /// @note This method is required by both CopyToDense and CopyFromDense. + inline size_t yStride() const { return mY; } + + /// @brief Return the stride of the array in the y direction ( = dimX*dimY). + /// @note This method is required by both CopyToDense and CopyFromDense. + inline size_t zStride() const { return mZ; } + +protected: + /// Protected constructor so as to prevent direct instantiation + DenseBase(const CoordBBox& bbox) : mBBox(bbox), mY(bbox.dim()[0]), mZ(mY*bbox.dim()[1]) {} + + const CoordBBox mBBox;//signed coordinates of the domain represented by the grid + const size_t mY, mZ;//strides in the y and z direction +};// end of DenseBase + +/// @brief Dense is a simple dense grid API used by the CopyToDense and +/// CopyFromDense classes defined below. +/// @details Use the Dense class to efficiently produce a dense in-memory +/// representation of an OpenVDB grid. However, be aware that a dense grid +/// could have a memory footprint that is orders of magnitude larger than +/// the sparse grid from which it originates. +/// +/// @note This class can be used as a simple wrapper for existing dense grid +/// classes if they provide access to the raw data array. +/// @note This implementation allows for the 3D memory layout to be +/// defined by the MemoryLayout template parameter (see above for definition). +/// The default memory layout is ZYX since that's the layout used by OpenVDB grids. +template +class Dense : public DenseBase +{ +public: + using ValueType = ValueT; + using BaseT = DenseBase; + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + /// @brief Construct a dense grid with a given range of coordinates. + /// + /// @param bbox the bounding box of the (signed) coordinate range of this grid + /// @throw ValueError if the bounding box is empty. + /// @note The min and max coordinates of the bounding box are inclusive. + Dense(const CoordBBox& bbox) : BaseT(bbox) { this->init(); } + + /// @brief Construct a dense grid with a given range of coordinates and initial value + /// + /// @param bbox the bounding box of the (signed) coordinate range of this grid + /// @param value the initial value of the grid. + /// @throw ValueError if the bounding box is empty. + /// @note The min and max coordinates of the bounding box are inclusive. + Dense(const CoordBBox& bbox, const ValueT& value) : BaseT(bbox) + { + this->init(); + this->fill(value); + } + + /// @brief Construct a dense grid that wraps an external array. + /// + /// @param bbox the bounding box of the (signed) coordinate range of this grid + /// @param data a raw C-style array whose size is commensurate with + /// the coordinate domain of @a bbox + /// + /// @note The data array is assumed to have a stride of one in the @e z direction. + /// @throw ValueError if the bounding box is empty. + /// @note The min and max coordinates of the bounding box are inclusive. + Dense(const CoordBBox& bbox, ValueT* data) : BaseT(bbox), mData(data) + { + if (BaseT::mBBox.empty()) { + OPENVDB_THROW(ValueError, "can't construct a dense grid with an empty bounding box"); + } + } + + /// @brief Construct a dense grid with a given origin and dimensions. + /// + /// @param dim the desired dimensions of the grid + /// @param min the signed coordinates of the first voxel in the dense grid + /// @throw ValueError if any of the dimensions are zero. + /// @note The @a min coordinate is inclusive, and the max coordinate will be + /// @a min + @a dim - 1. + Dense(const Coord& dim, const Coord& min = Coord(0)) + : BaseT(CoordBBox(min, min+dim.offsetBy(-1))) + { + this->init(); + } + + /// @brief Return the memory layout for this grid (see above for definitions). + static MemoryLayout memoryLayout() { return Layout; } + + /// @brief Return a raw pointer to this grid's value array. + /// @note This method is required by CopyToDense. + inline ValueT* data() { return mData; } + + /// @brief Return a raw pointer to this grid's value array. + /// @note This method is required by CopyFromDense. + inline const ValueT* data() const { return mData; } + + /// @brief Return the bounding box of the signed index domain of this grid. + /// @note This method is required by both CopyToDense and CopyFromDense. + inline const CoordBBox& bbox() const { return BaseT::mBBox; } + + /// Return the grid's origin in index coordinates. + inline const Coord& origin() const { return BaseT::mBBox.min(); } + + /// @brief Return the number of voxels contained in this grid. + inline Index64 valueCount() const { return BaseT::mBBox.volume(); } + + /// @brief Set the value of the voxel at the given array offset. + inline void setValue(size_t offset, const ValueT& value) { mData[offset] = value; } + + /// @brief Return a const reference to the value of the voxel at the given array offset. + const ValueT& getValue(size_t offset) const { return mData[offset]; } + + /// @brief Return a non-const reference to the value of the voxel at the given array offset. + ValueT& getValue(size_t offset) { return mData[offset]; } + + /// @brief Set the value of the voxel at unsigned index coordinates (i, j, k). + /// @note This is somewhat slower than using an array offset. + inline void setValue(size_t i, size_t j, size_t k, const ValueT& value) + { + mData[BaseT::coordToOffset(i,j,k)] = value; + } + + /// @brief Return a const reference to the value of the voxel + /// at unsigned index coordinates (i, j, k). + /// @note This is somewhat slower than using an array offset. + inline const ValueT& getValue(size_t i, size_t j, size_t k) const + { + return mData[BaseT::coordToOffset(i,j,k)]; + } + + /// @brief Return a non-const reference to the value of the voxel + /// at unsigned index coordinates (i, j, k). + /// @note This is somewhat slower than using an array offset. + inline ValueT& getValue(size_t i, size_t j, size_t k) + { + return mData[BaseT::coordToOffset(i,j,k)]; + } + + /// @brief Set the value of the voxel at the given signed coordinates. + /// @note This is slower than using either an array offset or unsigned index coordinates. + inline void setValue(const Coord& xyz, const ValueT& value) + { + mData[this->coordToOffset(xyz)] = value; + } + + /// @brief Return a const reference to the value of the voxel at the given signed coordinates. + /// @note This is slower than using either an array offset or unsigned index coordinates. + inline const ValueT& getValue(const Coord& xyz) const + { + return mData[this->coordToOffset(xyz)]; + } + + /// @brief Return a non-const reference to the value of the voxel + /// at the given signed coordinates. + /// @note This is slower than using either an array offset or unsigned index coordinates. + inline ValueT& getValue(const Coord& xyz) + { + return mData[this->coordToOffset(xyz)]; + } + + /// @brief Fill this grid with a constant value. + inline void fill(const ValueT& value) + { + size_t size = this->valueCount(); + ValueT* a = mData; + while(size--) *a++ = value; + } + + /// @brief Return the linear offset into this grid's value array given by + /// the specified signed coordinates, i.e., coordinates in the space of + /// this grid's bounding box. + /// + /// @note This method reflects the fact that we assume the same + /// layout of values as an OpenVDB grid, i.e., the fastest coordinate is @e z. + inline size_t coordToOffset(const Coord& xyz) const + { + assert(BaseT::mBBox.isInside(xyz)); + return BaseT::coordToOffset(size_t(xyz[0]-BaseT::mBBox.min()[0]), + size_t(xyz[1]-BaseT::mBBox.min()[1]), + size_t(xyz[2]-BaseT::mBBox.min()[2])); + } + + /// @brief Return the global coordinate corresponding to the specified linear offset. + inline Coord offsetToCoord(size_t n) const + { + return this->offsetToLocalCoord(n) + BaseT::mBBox.min(); + } + + /// @brief Return the memory footprint of this Dense grid in bytes. + inline Index64 memUsage() const + { + return sizeof(*this) + BaseT::mBBox.volume() * sizeof(ValueType); + } + + /// @brief Output a human-readable description of this grid to the + /// specified stream. + void print(const std::string& name = "", std::ostream& os = std::cout) const + { + const Coord dim = BaseT::mBBox.dim(); + os << "Dense Grid"; + if (!name.empty()) os << " \"" << name << "\""; + util::printBytes(os, this->memUsage(), ":\n Memory footprint: "); + os << " Dimensions of grid : " << dim[0] << " x " << dim[1] << " x " << dim[2] << "\n"; + os << " Number of voxels: " << util::formattedInt(this->valueCount()) << "\n"; + os << " Bounding box of voxels: " << BaseT::mBBox << "\n"; + os << " Memory layout: " << (Layout == LayoutZYX ? "ZYX (" : "XYZ (dis") + << "similar to VDB)\n"; + } + +private: + /// @brief Private method to initialize the dense value array. + void init() + { + if (BaseT::mBBox.empty()) { + OPENVDB_THROW(ValueError, "can't construct a dense grid with an empty bounding box"); + } + mArray.reset(new ValueT[BaseT::mBBox.volume()]); + mData = mArray.get(); + } + + std::unique_ptr mArray; + ValueT* mData;//raw c-style pointer to values +};// end of Dense + +//////////////////////////////////////// + + +/// @brief Copy an OpenVDB tree into an existing dense grid. +/// +/// @note Only voxels that intersect the dense grid's bounding box are copied +/// from the OpenVDB tree. But both active and inactive voxels are copied, +/// so all existing values in the dense grid are overwritten, regardless of +/// the OpenVDB tree's topology. +template > +class CopyToDense +{ +public: + using DenseT = _DenseT; + using TreeT = _TreeT; + using ValueT = typename TreeT::ValueType; + + CopyToDense(const TreeT& tree, DenseT& dense) + : mRoot(&(tree.root())), mDense(&dense) {} + + void copy(bool serial = false) const + { + if (serial) { + mRoot->copyToDense(mDense->bbox(), *mDense); + } else { + tbb::parallel_for(mDense->bbox(), *this); + } + } + + /// @brief Public method called by tbb::parallel_for + void operator()(const CoordBBox& bbox) const + { + mRoot->copyToDense(bbox, *mDense); + } + +private: + const typename TreeT::RootNodeType* mRoot; + DenseT* mDense; +};// CopyToDense + + +// Convenient wrapper function for the CopyToDense class +template +void +copyToDense(const GridOrTreeT& sparse, DenseT& dense, bool serial) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + + CopyToDense op(Adapter::constTree(sparse), dense); + op.copy(serial); +} + + +//////////////////////////////////////// + + +/// @brief Copy the values from a dense grid into an OpenVDB tree. +/// +/// @details Values in the dense grid that are within a tolerance of +/// the background value are truncated to inactive background voxels or tiles. +/// This allows the tree to form a sparse representation of the dense grid. +/// +/// @note Since this class allocates leaf nodes concurrently it is recommended +/// to use a scalable implementation of @c new like the one provided by TBB, +/// rather than the mutex-protected standard library @c new. +template > +class CopyFromDense +{ +public: + using DenseT = _DenseT; + using TreeT = _TreeT; + using ValueT = typename TreeT::ValueType; + using LeafT = typename TreeT::LeafNodeType; + using AccessorT = tree::ValueAccessor; + + CopyFromDense(const DenseT& dense, TreeT& tree, const ValueT& tolerance) + : mDense(&dense), + mTree(&tree), + mBlocks(nullptr), + mTolerance(tolerance), + mAccessor(tree.empty() ? nullptr : new AccessorT(tree)) + { + } + CopyFromDense(const CopyFromDense& other) + : mDense(other.mDense), + mTree(other.mTree), + mBlocks(other.mBlocks), + mTolerance(other.mTolerance), + mAccessor(other.mAccessor.get() == nullptr ? nullptr : new AccessorT(*mTree)) + { + } + + /// @brief Copy values from the dense grid to the sparse tree. + void copy(bool serial = false) + { + mBlocks = new std::vector(); + const CoordBBox& bbox = mDense->bbox(); + // Pre-process: Construct a list of blocks aligned with (potential) leaf nodes + for (CoordBBox sub=bbox; sub.min()[0] <= bbox.max()[0]; sub.min()[0] = sub.max()[0] + 1) { + for (sub.min()[1] = bbox.min()[1]; sub.min()[1] <= bbox.max()[1]; + sub.min()[1] = sub.max()[1] + 1) + { + for (sub.min()[2] = bbox.min()[2]; sub.min()[2] <= bbox.max()[2]; + sub.min()[2] = sub.max()[2] + 1) + { + sub.max() = Coord::minComponent(bbox.max(), + (sub.min()&(~(LeafT::DIM-1u))).offsetBy(LeafT::DIM-1u)); + mBlocks->push_back(Block(sub)); + } + } + } + + // Multi-threaded process: Convert dense grid into leaf nodes and tiles + if (serial) { + (*this)(tbb::blocked_range(0, mBlocks->size())); + } else { + tbb::parallel_for(tbb::blocked_range(0, mBlocks->size()), *this); + } + + // Post-process: Insert leaf nodes and tiles into the tree, and prune the tiles only! + tree::ValueAccessor acc(*mTree); + for (size_t m=0, size = mBlocks->size(); m &r) const + { + assert(mBlocks); + LeafT* leaf = new LeafT(); + + for (size_t m=r.begin(), n=0, end = r.end(); m != end; ++m, ++n) { + + Block& block = (*mBlocks)[m]; + const CoordBBox &bbox = block.bbox; + + if (mAccessor.get() == nullptr) {//i.e. empty target tree + leaf->fill(mTree->background(), false); + } else {//account for existing leaf nodes in the target tree + if (const LeafT* target = mAccessor->probeConstLeaf(bbox.min())) { + (*leaf) = (*target); + } else { + ValueT value = zeroVal(); + bool state = mAccessor->probeValue(bbox.min(), value); + leaf->fill(value, state); + } + } + + leaf->copyFromDense(bbox, *mDense, mTree->background(), mTolerance); + + if (!leaf->isConstant(block.tile.first, block.tile.second, mTolerance)) { + leaf->setOrigin(bbox.min() & (~(LeafT::DIM - 1))); + block.leaf = leaf; + leaf = new LeafT(); + } + }// loop over blocks + + delete leaf; + } + +private: + struct Block { + CoordBBox bbox; + LeafT* leaf; + std::pair tile; + Block(const CoordBBox& b) : bbox(b), leaf(nullptr) {} + }; + + const DenseT* mDense; + TreeT* mTree; + std::vector* mBlocks; + ValueT mTolerance; + std::unique_ptr mAccessor; +};// CopyFromDense + + +// Convenient wrapper function for the CopyFromDense class +template +void +copyFromDense(const DenseT& dense, GridOrTreeT& sparse, + const typename GridOrTreeT::ValueType& tolerance, bool serial) +{ + using Adapter = TreeAdapter; + using TreeT = typename Adapter::TreeType; + + CopyFromDense op(dense, Adapter::tree(sparse), tolerance); + op.copy(serial); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/DenseSparseTools.h b/openvdb/tools/DenseSparseTools.h new file mode 100644 index 00000000..93640f87 --- /dev/null +++ b/openvdb/tools/DenseSparseTools.h @@ -0,0 +1,1192 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TOOLS_DENSESPARSETOOLS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_DENSESPARSETOOLS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include "Dense.h" +#include // for std::min() +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Selectively extract and transform data from a dense grid, producing a +/// sparse tree with leaf nodes only (e.g. create a tree from the square +/// of values greater than a cutoff.) +/// @param dense A dense grid that acts as a data source +/// @param functor A functor that selects and transforms data for output +/// @param background The background value of the resulting sparse grid +/// @param threaded Option to use threaded or serial code path +/// @return @c Ptr to tree with the valuetype and configuration defined +/// by typedefs in the @c functor. +/// @note To achieve optimal sparsity consider calling the prune() +/// method on the result. +/// @note To simply copy the all the data from a Dense grid to a +/// OpenVDB Grid, use tools::copyFromDense() for better performance. +/// +/// The type of the sparse tree is determined by the specified OtpType +/// functor by means of the typedef OptType::ResultTreeType +/// +/// The OptType function is responsible for the the transformation of +/// dense grid data to sparse grid data on a per-voxel basis. +/// +/// Only leaf nodes with active values will be added to the sparse grid. +/// +/// The OpType must struct that defines a the minimal form +/// @code +/// struct ExampleOp +/// { +/// using ResultTreeType = DesiredTreeType; +/// +/// template +/// void OpType::operator() (const DenseValueType a, const IndexOrCoord& ijk, +/// ResultTreeType::LeafNodeType* leaf); +/// }; +/// @endcode +/// +/// For example, to generate a tree with valuesOn +/// at locations greater than a given maskvalue +/// @code +/// template +/// class Rule +/// { +/// public: +/// // Standard tree type (e.g. MaskTree or FloatTree in openvdb.h) +/// using ResultTreeType = typename openvdb::tree::Tree4::Type; +/// +/// using ResultLeafNodeType = typename ResultTreeType::LeafNodeType; +/// using ResultValueType = typename ResultTreeType::ValueType; +/// +/// using DenseValueType = float; +/// +/// using Index = vdbmath::Coord::ValueType; +/// +/// Rule(const DenseValueType& value): mMaskValue(value){}; +/// +/// template +/// void operator()(const DenseValueType& a, const IndexOrCoord& offset, +/// ResultLeafNodeType* leaf) const +/// { +/// if (a > mMaskValue) { +/// leaf->setValueOn(offset, a); +/// } +/// } +/// +/// private: +/// const DenseValueType mMaskValue; +/// }; +/// @endcode +template +typename OpType::ResultTreeType::Ptr +extractSparseTree(const DenseType& dense, const OpType& functor, + const typename OpType::ResultValueType& background, + bool threaded = true); + +/// This struct that aids template resolution of a new tree type +/// has the same configuration at TreeType, but the ValueType from +/// DenseType. +template +struct DSConverter +{ + using ValueType = typename DenseType::ValueType; + using Type = typename TreeType::template ValueConverter::Type; +}; + + +/// @brief Copy data from the intersection of a sparse tree and a dense input grid. +/// The resulting tree has the same configuration as the sparse tree, but holds +/// the data type specified by the dense input. +/// @param dense A dense grid that acts as a data source +/// @param mask The active voxels and tiles intersected with dense define iteration mask +/// @param background The background value of the resulting sparse grid +/// @param threaded Option to use threaded or serial code path +/// @return @c Ptr to tree with the same configuration as @c mask but of value type +/// defined by @c dense. +template +typename DSConverter::Type::Ptr +extractSparseTreeWithMask(const DenseType& dense, + const MaskTreeType& mask, + const typename DenseType::ValueType& background, + bool threaded = true); + + +/// Apply a point-wise functor to the intersection of a dense grid and a given bounding box +/// @param dense A dense grid to be transformed +/// @param bbox Index space bounding box, define region where the transformation is applied +/// @param op A functor that acts on the dense grid value type +/// @param parallel Used to select multithreaded or single threaded +/// Minimally, the @c op class has to support a @c operator() method, +/// @code +/// // Square values in a grid +/// struct Op +/// { +/// ValueT operator()(const ValueT& in) const +/// { +/// // do work +/// ValueT result = in * in; +/// +/// return result; +/// } +/// }; +/// @endcode +/// NB: only Dense grids with memory layout zxy are supported +template +void transformDense(Dense& dense, + const openvdb::CoordBBox& bbox, const OpType& op, bool parallel=true); + +/// We currrently support the following operations when compositing sparse +/// data into a dense grid. +enum DSCompositeOp { + DS_OVER, DS_ADD, DS_SUB, DS_MIN, DS_MAX, DS_MULT, DS_SET +}; + +/// @brief Composite data from a sparse tree into a dense array of the same value type. +/// @param dense Dense grid to be altered by the operation +/// @param source Sparse data to composite into @c dense +/// @param alpha Sparse Alpha mask used in compositing operations. +/// @param beta Constant multiplier on src +/// @param strength Constant multiplier on alpha +/// @param threaded Enable threading for this operation. +template +void compositeToDense(Dense& dense, + const TreeT& source, + const TreeT& alpha, + const typename TreeT::ValueType beta, + const typename TreeT::ValueType strength, + bool threaded = true); + + +/// @brief Functor-based class used to extract data that satisfies some +/// criteria defined by the embedded @c OpType functor. The @c extractSparseTree +/// function wraps this class. +template +class SparseExtractor +{ +public: + using Index = openvdb::math::Coord::ValueType; + + using DenseValueType = typename DenseType::ValueType; + using ResultTreeType = typename OpType::ResultTreeType; + using ResultValueType = typename ResultTreeType::ValueType; + using ResultLeafNodeType = typename ResultTreeType::LeafNodeType; + using MaskTree = typename ResultTreeType::template ValueConverter::Type; + + using Range3d = tbb::blocked_range3d; + +private: + const DenseType& mDense; + const OpType& mFunctor; + const ResultValueType mBackground; + const openvdb::math::CoordBBox mBBox; + const Index mWidth; + typename ResultTreeType::Ptr mMask; + openvdb::math::Coord mMin; + +public: + SparseExtractor(const DenseType& dense, const OpType& functor, + const ResultValueType background) : + mDense(dense), mFunctor(functor), + mBackground(background), + mBBox(dense.bbox()), + mWidth(ResultLeafNodeType::DIM), + mMask( new ResultTreeType(mBackground)) + {} + + SparseExtractor(const DenseType& dense, + const openvdb::math::CoordBBox& bbox, + const OpType& functor, + const ResultValueType background) : + mDense(dense), mFunctor(functor), + mBackground(background), + mBBox(bbox), + mWidth(ResultLeafNodeType::DIM), + mMask( new ResultTreeType(mBackground)) + { + // mBBox must be inside the coordinate rage of the dense grid + if (!dense.bbox().isInside(mBBox)) { + OPENVDB_THROW(ValueError, "Data extraction window out of bound"); + } + } + + SparseExtractor(SparseExtractor& other, tbb::split): + mDense(other.mDense), mFunctor(other.mFunctor), + mBackground(other.mBackground), mBBox(other.mBBox), + mWidth(other.mWidth), + mMask(new ResultTreeType(mBackground)), + mMin(other.mMin) + {} + + typename ResultTreeType::Ptr extract(bool threaded = true) + { + // Construct 3D range of leaf nodes that + // intersect mBBox. + + // Snap the bbox to nearest leaf nodes min and max + + openvdb::math::Coord padded_min = mBBox.min(); + openvdb::math::Coord padded_max = mBBox.max(); + + + padded_min &= ~(mWidth - 1); + padded_max &= ~(mWidth - 1); + + padded_max[0] += mWidth - 1; + padded_max[1] += mWidth - 1; + padded_max[2] += mWidth - 1; + + + // number of leaf nodes in each direction + // division by leaf width, e.g. 8 in most cases + + const Index xleafCount = ( padded_max.x() - padded_min.x() + 1 ) / mWidth; + const Index yleafCount = ( padded_max.y() - padded_min.y() + 1 ) / mWidth; + const Index zleafCount = ( padded_max.z() - padded_min.z() + 1 ) / mWidth; + + mMin = padded_min; + + Range3d leafRange(0, xleafCount, 1, + 0, yleafCount, 1, + 0, zleafCount, 1); + + // Iterate over the leafnodes applying *this as a functor. + if (threaded) { + tbb::parallel_reduce(leafRange, *this); + } else { + (*this)(leafRange); + } + + return mMask; + } + + void operator()(const Range3d& range) + { + ResultLeafNodeType* leaf = nullptr; + + // Unpack the range3d item. + const Index imin = range.pages().begin(); + const Index imax = range.pages().end(); + + const Index jmin = range.rows().begin(); + const Index jmax = range.rows().end(); + + const Index kmin = range.cols().begin(); + const Index kmax = range.cols().end(); + + + // loop over all the candidate leafs. Adding only those with 'true' values + // to the tree + + for (Index i = imin; i < imax; ++i) { + for (Index j = jmin; j < jmax; ++j) { + for (Index k = kmin; k < kmax; ++k) { + + // Calculate the origin of candidate leaf + const openvdb::math::Coord origin = + mMin + openvdb::math::Coord(mWidth * i, + mWidth * j, + mWidth * k ); + + if (leaf == nullptr) { + leaf = new ResultLeafNodeType(origin, mBackground); + } else { + leaf->setOrigin(origin); + leaf->fill(mBackground); + leaf->setValuesOff(); + } + + // The bounding box for this leaf + + openvdb::math::CoordBBox localBBox = leaf->getNodeBoundingBox(); + + // Shrink to the intersection with mBBox (i.e. the dense + // volume) + + localBBox.intersect(mBBox); + + // Early out for non-intersecting leafs + + if (localBBox.empty()) continue; + + + const openvdb::math::Coord start = localBBox.getStart(); + const openvdb::math::Coord end = localBBox.getEnd(); + + // Order the looping to respect the memory layout in + // the Dense source + + if (mDense.memoryLayout() == openvdb::tools::LayoutZYX) { + + openvdb::math::Coord ijk; + Index offset; + const DenseValueType* dp; + for (ijk[0] = start.x(); ijk[0] < end.x(); ++ijk[0] ) { + for (ijk[1] = start.y(); ijk[1] < end.y(); ++ijk[1] ) { + for (ijk[2] = start.z(), + offset = ResultLeafNodeType::coordToOffset(ijk), + dp = &mDense.getValue(ijk); + ijk[2] < end.z(); ++ijk[2], ++offset, ++dp) { + + mFunctor(*dp, offset, leaf); + } + } + } + + } else { + + openvdb::math::Coord ijk; + const DenseValueType* dp; + for (ijk[2] = start.z(); ijk[2] < end.z(); ++ijk[2]) { + for (ijk[1] = start.y(); ijk[1] < end.y(); ++ijk[1]) { + for (ijk[0] = start.x(), + dp = &mDense.getValue(ijk); + ijk[0] < end.x(); ++ijk[0], ++dp) { + + mFunctor(*dp, ijk, leaf); + + } + } + } + } + + // Only add non-empty leafs (empty is defined as all inactive) + + if (!leaf->isEmpty()) { + mMask->addLeaf(leaf); + leaf = nullptr; + } + + } + } + } + + // Clean up an unused leaf. + + if (leaf != nullptr) delete leaf; + } + + void join(SparseExtractor& rhs) { + mMask->merge(*rhs.mMask); + } +}; // class SparseExtractor + + +template +typename OpType::ResultTreeType::Ptr +extractSparseTree(const DenseType& dense, const OpType& functor, + const typename OpType::ResultValueType& background, + bool threaded) +{ + // Construct the mask using a parallel reduce pattern. + // Each thread computes disjoint mask-trees. The join merges + // into a single tree. + + SparseExtractor extractor(dense, functor, background); + + return extractor.extract(threaded); +} + + +/// @brief Functor-based class used to extract data from a dense grid, at +/// the index-space intersection with a supplied mask in the form of a sparse tree. +/// The @c extractSparseTreeWithMask function wraps this class. +template +class SparseMaskedExtractor +{ +public: + using _ResultTreeType = typename DSConverter::Type; + using ResultTreeType = _ResultTreeType; + using ResultLeafNodeType = typename ResultTreeType::LeafNodeType; + using ResultValueType = typename ResultTreeType::ValueType; + using DenseValueType = ResultValueType; + + using MaskTree = typename ResultTreeType::template ValueConverter::Type; + using MaskLeafCIter = typename MaskTree::LeafCIter; + using MaskLeafVec = std::vector; + + + SparseMaskedExtractor(const DenseType& dense, + const ResultValueType& background, + const MaskLeafVec& leafVec + ): + mDense(dense), mBackground(background), mBBox(dense.bbox()), + mLeafVec(leafVec), + mResult(new ResultTreeType(mBackground)) + {} + + SparseMaskedExtractor(const SparseMaskedExtractor& other, tbb::split): + mDense(other.mDense), mBackground(other.mBackground), mBBox(other.mBBox), + mLeafVec(other.mLeafVec), mResult( new ResultTreeType(mBackground)) + {} + + typename ResultTreeType::Ptr extract(bool threaded = true) + { + tbb::blocked_range range(0, mLeafVec.size()); + + if (threaded) { + tbb::parallel_reduce(range, *this); + } else { + (*this)(range); + } + + return mResult; + } + + // Used in looping over leaf nodes in the masked grid + // and using the active mask to select data to + void operator()(const tbb::blocked_range& range) + { + ResultLeafNodeType* leaf = nullptr; + + // loop over all the candidate leafs. Adding only those with 'true' values + // to the tree + + for (size_t idx = range.begin(); idx < range.end(); ++ idx) { + + const typename MaskTree::LeafNodeType* maskLeaf = mLeafVec[idx]; + + // The bounding box for this leaf + + openvdb::math::CoordBBox localBBox = maskLeaf->getNodeBoundingBox(); + + // Shrink to the intersection with the dense volume + + localBBox.intersect(mBBox); + + // Early out if there was no intersection + + if (localBBox.empty()) continue; + + // Reset or allocate the target leaf + + if (leaf == nullptr) { + leaf = new ResultLeafNodeType(maskLeaf->origin(), mBackground); + } else { + leaf->setOrigin(maskLeaf->origin()); + leaf->fill(mBackground); + leaf->setValuesOff(); + } + + // Iterate over the intersecting bounding box + // copying active values to the result tree + + const openvdb::math::Coord start = localBBox.getStart(); + const openvdb::math::Coord end = localBBox.getEnd(); + + openvdb::math::Coord ijk; + + if (mDense.memoryLayout() == openvdb::tools::LayoutZYX + && maskLeaf->isDense()) { + + Index offset; + const DenseValueType* src; + for (ijk[0] = start.x(); ijk[0] < end.x(); ++ijk[0] ) { + for (ijk[1] = start.y(); ijk[1] < end.y(); ++ijk[1] ) { + for (ijk[2] = start.z(), + offset = ResultLeafNodeType::coordToOffset(ijk), + src = &mDense.getValue(ijk); + ijk[2] < end.z(); ++ijk[2], ++offset, ++src) { + + // copy into leaf + leaf->setValueOn(offset, *src); + } + + } + } + + } else { + + Index offset; + for (ijk[0] = start.x(); ijk[0] < end.x(); ++ijk[0] ) { + for (ijk[1] = start.y(); ijk[1] < end.y(); ++ijk[1] ) { + for (ijk[2] = start.z(), + offset = ResultLeafNodeType::coordToOffset(ijk); + ijk[2] < end.z(); ++ijk[2], ++offset) { + + if (maskLeaf->isValueOn(offset)) { + const ResultValueType denseValue = mDense.getValue(ijk); + leaf->setValueOn(offset, denseValue); + } + } + } + } + } + // Only add non-empty leafs (empty is defined as all inactive) + + if (!leaf->isEmpty()) { + mResult->addLeaf(leaf); + leaf = nullptr; + } + } + + // Clean up an unused leaf. + + if (leaf != nullptr) delete leaf; + } + + void join(SparseMaskedExtractor& rhs) { + mResult->merge(*rhs.mResult); + } + + +private: + const DenseType& mDense; + const ResultValueType mBackground; + const openvdb::math::CoordBBox& mBBox; + const MaskLeafVec& mLeafVec; + + typename ResultTreeType::Ptr mResult; + +}; // class SparseMaskedExtractor + + +/// @brief a simple utility class used by @c extractSparseTreeWithMask +template +struct ExtractAll +{ + using ResultTreeType = _ResultTreeType; + using ResultLeafNodeType = typename ResultTreeType::LeafNodeType; + + template inline void + operator()(const DenseValueType& a, const CoordOrIndex& offset, ResultLeafNodeType* leaf) const + { + leaf->setValueOn(offset, a); + } +}; + + +template +typename DSConverter::Type::Ptr +extractSparseTreeWithMask(const DenseType& dense, + const MaskTreeType& maskProxy, + const typename DenseType::ValueType& background, + bool threaded) +{ + using LeafExtractor = SparseMaskedExtractor; + using DenseValueType = typename LeafExtractor::DenseValueType; + using ResultTreeType = typename LeafExtractor::ResultTreeType; + using MaskLeafVec = typename LeafExtractor::MaskLeafVec; + using MaskTree = typename LeafExtractor::MaskTree; + using MaskLeafCIter = typename LeafExtractor::MaskLeafCIter; + using ExtractionRule = ExtractAll; + + // Use Mask tree to hold the topology + + MaskTree maskTree(maskProxy, false, TopologyCopy()); + + // Construct an array of pointers to the mask leafs. + + const size_t leafCount = maskTree.leafCount(); + MaskLeafVec leafarray(leafCount); + MaskLeafCIter leafiter = maskTree.cbeginLeaf(); + for (size_t n = 0; n != leafCount; ++n, ++leafiter) { + leafarray[n] = leafiter.getLeaf(); + } + + + // Extract the data that is masked leaf nodes in the mask. + + LeafExtractor leafextractor(dense, background, leafarray); + typename ResultTreeType::Ptr resultTree = leafextractor.extract(threaded); + + + // Extract data that is masked by tiles in the mask. + + + // Loop over the mask tiles, extracting the data into new trees. + // These trees will be leaf-orthogonal to the leafTree (i.e. no leaf + // nodes will overlap). Merge these trees into the result. + + typename MaskTreeType::ValueOnCIter tileIter(maskProxy); + tileIter.setMaxDepth(MaskTreeType::ValueOnCIter::LEAF_DEPTH - 1); + + // Return the leaf tree if the mask had no tiles + + if (!tileIter) return resultTree; + + ExtractionRule allrule; + + // Loop over the tiles in series, but the actual data extraction + // is in parallel. + + CoordBBox bbox; + for ( ; tileIter; ++tileIter) { + + // Find the intersection of the tile with the dense grid. + + tileIter.getBoundingBox(bbox); + bbox.intersect(dense.bbox()); + + if (bbox.empty()) continue; + + SparseExtractor copyData(dense, bbox, allrule, background); + typename ResultTreeType::Ptr fromTileTree = copyData.extract(threaded); + resultTree->merge(*fromTileTree); + } + + return resultTree; +} + + +/// @brief Class that applies a functor to the index space intersection +/// of a prescribed bounding box and the dense grid. +/// NB: This class only supports DenseGrids with ZYX memory layout. +template +class DenseTransformer +{ +public: + using ValueT = _ValueT; + using DenseT = Dense; + using IntType = openvdb::math::Coord::ValueType; + using RangeType = tbb::blocked_range2d; + +private: + DenseT& mDense; + const OpType& mOp; + openvdb::math::CoordBBox mBBox; + +public: + DenseTransformer(DenseT& dense, const openvdb::math::CoordBBox& bbox, const OpType& functor): + mDense(dense), mOp(functor), mBBox(dense.bbox()) + { + // The iteration space is the intersection of the + // input bbox and the index-space covered by the dense grid + mBBox.intersect(bbox); + } + + DenseTransformer(const DenseTransformer& other) : + mDense(other.mDense), mOp(other.mOp), mBBox(other.mBBox) {} + + void apply(bool threaded = true) { + + // Early out if the iteration space is empty + + if (mBBox.empty()) return; + + + const openvdb::math::Coord start = mBBox.getStart(); + const openvdb::math::Coord end = mBBox.getEnd(); + + // The iteration range only the slower two directions. + const RangeType range(start.x(), end.x(), 1, + start.y(), end.y(), 1); + + if (threaded) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + + void operator()(const RangeType& range) const { + + // The stride in the z-direction. + // Note: the bbox is [inclusive, inclusive] + + const size_t zlength = size_t(mBBox.max().z() - mBBox.min().z() + 1); + + const IntType imin = range.rows().begin(); + const IntType imax = range.rows().end(); + const IntType jmin = range.cols().begin(); + const IntType jmax = range.cols().end(); + + + openvdb::math::Coord xyz(imin, jmin, mBBox.min().z()); + for (xyz[0] = imin; xyz[0] != imax; ++xyz[0]) { + for (xyz[1] = jmin; xyz[1] != jmax; ++xyz[1]) { + + mOp.transform(mDense, xyz, zlength); + } + } + } +}; // class DenseTransformer + + +/// @brief a wrapper struct used to avoid unnecessary computation of +/// memory access from @c Coord when all offsets are guaranteed to be +/// within the dense grid. +template +struct ContiguousOp +{ + ContiguousOp(const PointWiseOp& op) : mOp(op){} + + using DenseT = Dense; + inline void transform(DenseT& dense, openvdb::math::Coord& ijk, size_t size) const + { + ValueT* dp = const_cast(&dense.getValue(ijk)); + + for (size_t offset = 0; offset < size; ++offset) { + dp[offset] = mOp(dp[offset]); + } + } + + const PointWiseOp mOp; +}; + + +/// Apply a point-wise functor to the intersection of a dense grid and a given bounding box +template +void +transformDense(Dense& dense, + const openvdb::CoordBBox& bbox, + const PointwiseOpT& functor, bool parallel) +{ + using OpT = ContiguousOp; + + // Convert the Op so it operates on a contiguous line in memory + + OpT op(functor); + + // Apply to the index space intersection in the dense grid + DenseTransformer transformer(dense, bbox, op); + transformer.apply(parallel); +} + + +template +class SparseToDenseCompositor +{ +public: + using TreeT = _TreeT; + using ValueT = typename TreeT::ValueType; + using LeafT = typename TreeT::LeafNodeType; + using MaskTreeT = typename TreeT::template ValueConverter::Type; + using MaskLeafT = typename MaskTreeT::LeafNodeType; + using DenseT = Dense; + using Index = openvdb::math::Coord::ValueType; + using Range3d = tbb::blocked_range3d; + + SparseToDenseCompositor(DenseT& dense, const TreeT& source, const TreeT& alpha, + const ValueT beta, const ValueT strength) : + mDense(dense), mSource(source), mAlpha(alpha), mBeta(beta), mStrength(strength) + {} + + SparseToDenseCompositor(const SparseToDenseCompositor& other): + mDense(other.mDense), mSource(other.mSource), mAlpha(other.mAlpha), + mBeta(other.mBeta), mStrength(other.mStrength) {} + + + void sparseComposite(bool threaded) + { + const ValueT beta = mBeta; + const ValueT strength = mStrength; + + // construct a tree that defines the iteration space + + MaskTreeT maskTree(mSource, false /*background*/, openvdb::TopologyCopy()); + maskTree.topologyUnion(mAlpha); + + // Composite regions that are represented by leafnodes in either mAlpha or mSource + // Parallelize over bool-leafs + + openvdb::tree::LeafManager maskLeafs(maskTree); + maskLeafs.foreach(*this, threaded); + + // Composite regions that are represented by tiles + // Parallelize within each tile. + + typename MaskTreeT::ValueOnCIter citer = maskTree.cbeginValueOn(); + citer.setMaxDepth(MaskTreeT::ValueOnCIter::LEAF_DEPTH - 1); + + if (!citer) return; + + typename tree::ValueAccessor alphaAccessor(mAlpha); + typename tree::ValueAccessor sourceAccessor(mSource); + + for (; citer; ++citer) { + + const openvdb::math::Coord org = citer.getCoord(); + + // Early out if both alpha and source are zero in this tile. + + const ValueT alphaValue = alphaAccessor.getValue(org); + const ValueT sourceValue = sourceAccessor.getValue(org); + + if (openvdb::math::isZero(alphaValue) && + openvdb::math::isZero(sourceValue)) continue; + + // Compute overlap of tile with the dense grid + + openvdb::math::CoordBBox localBBox = citer.getBoundingBox(); + localBBox.intersect(mDense.bbox()); + + // Early out if there is no intersection + + if (localBBox.empty()) continue; + + // Composite the tile-uniform values into the dense grid. + compositeFromTile(mDense, localBBox, sourceValue, + alphaValue, beta, strength, threaded); + } + } + + // Composites leaf values where the alpha values are active. + // Used in sparseComposite + void inline operator()(const MaskLeafT& maskLeaf, size_t /*i*/) const + { + using ULeaf = UniformLeaf; + openvdb::math::CoordBBox localBBox = maskLeaf.getNodeBoundingBox(); + localBBox.intersect(mDense.bbox()); + + // Early out for non-overlapping leafs + + if (localBBox.empty()) return; + + const openvdb::math::Coord org = maskLeaf.origin(); + const LeafT* alphaLeaf = mAlpha.probeLeaf(org); + const LeafT* sourceLeaf = mSource.probeLeaf(org); + + if (!sourceLeaf) { + + // Create a source leaf proxy with the correct value + ULeaf uniformSource(mSource.getValue(org)); + + if (!alphaLeaf) { + + // Create an alpha leaf proxy with the correct value + ULeaf uniformAlpha(mAlpha.getValue(org)); + + compositeFromLeaf(mDense, localBBox, uniformSource, uniformAlpha, + mBeta, mStrength); + } else { + + compositeFromLeaf(mDense, localBBox, uniformSource, *alphaLeaf, + mBeta, mStrength); + } + } else { + if (!alphaLeaf) { + + // Create an alpha leaf proxy with the correct value + ULeaf uniformAlpha(mAlpha.getValue(org)); + + compositeFromLeaf(mDense, localBBox, *sourceLeaf, uniformAlpha, + mBeta, mStrength); + } else { + + compositeFromLeaf(mDense, localBBox, *sourceLeaf, *alphaLeaf, + mBeta, mStrength); + } + } + } + // i.e. it assumes that all valueOff Alpha voxels have value 0. + + template + inline static void compositeFromLeaf(DenseT& dense, const openvdb::math::CoordBBox& bbox, + const LeafT1& source, const LeafT2& alpha, + const ValueT beta, const ValueT strength) + { + using IntType = openvdb::math::Coord::ValueType; + + const ValueT sbeta = strength * beta; + openvdb::math::Coord ijk = bbox.min(); + + + if (alpha.isDense() /*all active values*/) { + + // Optimal path for dense alphaLeaf + const IntType size = bbox.max().z() + 1 - bbox.min().z(); + + for (ijk[0] = bbox.min().x(); ijk[0] < bbox.max().x() + 1; ++ijk[0]) { + for (ijk[1] = bbox.min().y(); ijk[1] < bbox.max().y() + 1; ++ijk[1]) { + + ValueT* d = const_cast(&dense.getValue(ijk)); + const ValueT* a = &alpha.getValue(ijk); + const ValueT* s = &source.getValue(ijk); + + for (IntType idx = 0; idx < size; ++idx) { + d[idx] = CompositeMethod::apply(d[idx], a[idx], s[idx], + strength, beta, sbeta); + } + } + } + } else { + + // AlphaLeaf has non-active cells. + + for (ijk[0] = bbox.min().x(); ijk[0] < bbox.max().x() + 1; ++ijk[0]) { + for (ijk[1] = bbox.min().y(); ijk[1] < bbox.max().y() + 1; ++ijk[1]) { + for (ijk[2] = bbox.min().z(); ijk[2] < bbox.max().z() + 1; ++ijk[2]) { + + if (alpha.isValueOn(ijk)) { + dense.setValue(ijk, CompositeMethod::apply(dense.getValue(ijk), + alpha.getValue(ijk), source.getValue(ijk), strength, beta, sbeta)); + } + } + } + } + } + } + + inline static void compositeFromTile(DenseT& dense, openvdb::math::CoordBBox& bbox, + const ValueT& sourceValue, const ValueT& alphaValue, + const ValueT& beta, const ValueT& strength, + bool threaded) + { + using TileTransformer = UniformTransformer; + TileTransformer functor(sourceValue, alphaValue, beta, strength); + + // Transform the data inside the bbox according to the TileTranformer. + + transformDense(dense, bbox, functor, threaded); + } + + void denseComposite(bool threaded) + { + /// Construct a range that corresponds to the + /// bounding box of the dense volume + const openvdb::math::CoordBBox& bbox = mDense.bbox(); + + Range3d range(bbox.min().x(), bbox.max().x(), LeafT::DIM, + bbox.min().y(), bbox.max().y(), LeafT::DIM, + bbox.min().z(), bbox.max().z(), LeafT::DIM); + + // Iterate over the range, compositing into + // the dense grid using value accessors for + // sparse the grids. + if (threaded) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + + // Composites a dense region using value accessors + // into a dense grid + void operator()(const Range3d& range) const + { + // Use value accessors to alpha and source + + typename tree::ValueAccessor alphaAccessor(mAlpha); + typename tree::ValueAccessor sourceAccessor(mSource); + + const ValueT strength = mStrength; + const ValueT beta = mBeta; + const ValueT sbeta = strength * beta; + + // Unpack the range3d item. + const Index imin = range.pages().begin(); + const Index imax = range.pages().end(); + + const Index jmin = range.rows().begin(); + const Index jmax = range.rows().end(); + + const Index kmin = range.cols().begin(); + const Index kmax = range.cols().end(); + + openvdb::Coord ijk; + for (ijk[0] = imin; ijk[0] < imax; ++ijk[0]) { + for (ijk[1] = jmin; ijk[1] < jmax; ++ijk[1]) { + for (ijk[2] = kmin; ijk[2] < kmax; ++ijk[2]) { + const ValueT d_old = mDense.getValue(ijk); + const ValueT& alpha = alphaAccessor.getValue(ijk); + const ValueT& src = sourceAccessor.getValue(ijk); + + mDense.setValue(ijk, + CompositeMethod::apply(d_old, alpha, src, strength, beta, sbeta)); + } + } + } + } + +private: + // Internal class that wraps the templated composite method + // for use when both alpha and source are uniform over + // a prescribed bbox (e.g. a tile). + class UniformTransformer + { + public: + UniformTransformer(const ValueT& source, const ValueT& alpha, const ValueT& _beta, + const ValueT& _strength) : + mSource(source), mAlpha(alpha), mBeta(_beta), + mStrength(_strength), mSBeta(_strength * _beta) + {} + + ValueT operator()(const ValueT& input) const + { + return CompositeMethod::apply(input, mAlpha, mSource, mStrength, mBeta, mSBeta); + } + + private: + const ValueT mSource; + const ValueT mAlpha; + const ValueT mBeta; + const ValueT mStrength; + const ValueT mSBeta; + }; + + + // Simple Class structure that mimics a leaf + // with uniform values. Holds LeafT::DIM copies + // of a value in an array. + struct Line { ValueT mValues[LeafT::DIM]; }; + class UniformLeaf : private Line + { + public: + using ValueT = typename LeafT::ValueType; + + using BaseT = Line; + UniformLeaf(const ValueT& value) : BaseT(init(value)) {} + + static const BaseT init(const ValueT& value) { + BaseT tmp; + for (openvdb::Index i = 0; i < LeafT::DIM; ++i) { + tmp.mValues[i] = value; + } + return tmp; + } + + bool isDense() const { return true; } + bool isValueOn(openvdb::math::Coord&) const { return true; } + + const ValueT& getValue(const openvdb::math::Coord&) const { return BaseT::mValues[0]; } + }; + +private: + DenseT& mDense; + const TreeT& mSource; + const TreeT& mAlpha; + ValueT mBeta; + ValueT mStrength; +}; // class SparseToDenseCompositor + + +namespace ds +{ + //@{ + /// @brief Point wise methods used to apply various compositing operations. + template + struct OpOver + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT strength, + const ValueT beta, + const ValueT /*sbeta*/) + { return (u + strength * alpha * (beta * v - u)); } + }; + + template + struct OpAdd + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT /*strength*/, + const ValueT /*beta*/, + const ValueT sbeta) + { return (u + sbeta * alpha * v); } + }; + + template + struct OpSub + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT /*strength*/, + const ValueT /*beta*/, + const ValueT sbeta) + { return (u - sbeta * alpha * v); } + }; + + template + struct OpMin + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT s /*trength*/, + const ValueT beta, + const ValueT /*sbeta*/) + { return ( ( 1 - s * alpha) * u + s * alpha * std::min(u, beta * v) ); } + }; + + template + struct OpMax + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT s/*trength*/, + const ValueT beta, + const ValueT /*sbeta*/) + { return ( ( 1 - s * alpha ) * u + s * alpha * std::min(u, beta * v) ); } + }; + + template + struct OpMult + { + static inline ValueT apply(const ValueT u, const ValueT alpha, + const ValueT v, + const ValueT s/*trength*/, + const ValueT /*beta*/, + const ValueT sbeta) + { return ( ( 1 + alpha * (sbeta * v - s)) * u ); } + }; + //@} + + //@{ + /// Translator that converts an enum to compositing functor types + template + struct CompositeFunctorTranslator{}; + + template + struct CompositeFunctorTranslator{ using OpT = OpOver; }; + + template + struct CompositeFunctorTranslator{ using OpT = OpAdd; }; + + template + struct CompositeFunctorTranslator{ using OpT = OpSub; }; + + template + struct CompositeFunctorTranslator{ using OpT = OpMin; }; + + template + struct CompositeFunctorTranslator{ using OpT = OpMax; }; + + template + struct CompositeFunctorTranslator{ using OpT = OpMult; }; + //@} + +} // namespace ds + + +template +inline void +compositeToDense( + Dense& dense, + const TreeT& source, const TreeT& alpha, + const typename TreeT::ValueType beta, + const typename TreeT::ValueType strength, + bool threaded) +{ + using ValueT = typename TreeT::ValueType; + using Translator = ds::CompositeFunctorTranslator; + using Method = typename Translator::OpT; + + if (openvdb::math::isZero(strength)) return; + + SparseToDenseCompositor tool(dense, source, alpha, beta, strength); + + if (openvdb::math::isZero(alpha.background()) && + openvdb::math::isZero(source.background())) + { + // Use the sparsity of (alpha U source) as the iteration space. + tool.sparseComposite(threaded); + } else { + // Use the bounding box of dense as the iteration space. + tool.denseComposite(threaded); + } +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif //OPENVDB_TOOLS_DENSESPARSETOOLS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Diagnostics.h b/openvdb/tools/Diagnostics.h new file mode 100644 index 00000000..694d2155 --- /dev/null +++ b/openvdb/tools/Diagnostics.h @@ -0,0 +1,1331 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file Diagnostics.h +/// +/// @author Ken Museth +/// +/// @brief Various diagnostic tools to identify potential issues with +/// for example narrow-band level sets or fog volumes +/// +#ifndef OPENVDB_TOOLS_DIAGNOSTICS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_DIAGNOSTICS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include // for std::isnan(), std::isfinite() +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Perform checks on a grid to see if it is a valid symmetric, +/// narrow-band level set. +/// +/// @param grid Grid to be checked +/// @param number Number of the checks to be performed (see below) +/// @return string with a message indicating the nature of the +/// issue. If no issue is detected the return string is empty. +/// +/// @details @a number refers to the following ordered list of +/// checks - always starting from the top. +/// Fast checks +/// 1: value type is floating point +/// 2: has level set class type +/// 3: has uniform scale +/// 4: background value is positive and n*dx +/// +/// Slower checks +/// 5: no active tiles +/// 6: all the values are finite, i.e not NaN or infinite +/// 7: active values in range between +-background +/// 8: abs of inactive values = background, i.e. assuming a symmetric +/// narrow band! +/// +/// Relatively slow check (however multithreaded) +/// 9: norm gradient is close to one, i.e. satisfied the Eikonal equation. +template +std::string +checkLevelSet(const GridType& grid, size_t number=9); + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Perform checks on a grid to see if it is a valid fog volume. +/// +/// @param grid Grid to be checked +/// @param number Number of the checks to be performed (see below) +/// @return string with a message indicating the nature of the +/// issue. If no issue is detected the return string is empty. +/// +/// @details @a number refers to the following ordered list of +/// checks - always starting from the top. +/// Fast checks +/// 1: value type is floating point +/// 2: has FOG volume class type +/// 3: background value is zero +/// +/// Slower checks +/// 4: all the values are finite, i.e not NaN or infinite +/// 5: inactive values are zero +/// 6: active values are in the range [0,1] +template +std::string +checkFogVolume(const GridType& grid, size_t number=6); + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Threaded method to find unique inactive values. +/// +/// @param grid A VDB volume. +/// @param values List of unique inactive values, returned by this method. +/// @param numValues Number of values to look for. +/// @return @c false if the @a grid has more than @a numValues inactive values. +template +bool +uniqueInactiveValues(const GridType& grid, + std::vector& values, size_t numValues); + + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Checks NaN values +template +struct CheckNan +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits< + typename TreeIterT::NodeT, typename TreeIterT::ValueIterT>::template + NodeConverter::Type; + + /// @brief Default constructor + CheckNan() {} + + /// Return true if the scalar value is NaN + inline bool operator()(const ElementType& v) const { return std::isnan(v); } + + /// @brief This allows for vector values to be checked component-wise + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const + { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true;//should unroll + return false; + } + + /// @brief Return true if the tile at the iterator location is NaN + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the voxel at the iterator location is NaN + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const { return "NaN"; } + +};// CheckNan + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Checks for infinite values, e.g. 1/0 or -1/0 +template +struct CheckInf +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + /// @brief Default constructor + CheckInf() {} + + /// Return true if the value is infinite + inline bool operator()(const ElementType& v) const { return std::isinf(v); } + + /// Return true if any of the vector components are infinite. + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const + { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the tile at the iterator location is infinite + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the tile at the iterator location is infinite + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const { return "infinite"; } +};// CheckInf + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Checks for both NaN and inf values, i.e. any value that is not finite. +template +struct CheckFinite +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + /// @brief Default constructor + CheckFinite() {} + + /// Return true if the value is NOT finite, i.e. it's NaN or infinite + inline bool operator()(const ElementType& v) const { return !std::isfinite(v); } + + /// Return true if any of the vector components are NaN or infinite. + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the tile at the iterator location is NaN or infinite. + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the tile at the iterator location is NaN or infinite. + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const { return "not finite"; } +};// CheckFinite + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Check that the magnitude of a value, a, is close to a fixed +/// magnitude, b, given a fixed tolerance c. That is | |a| - |b| | <= c +template +struct CheckMagnitude +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + /// @brief Default constructor + CheckMagnitude(const ElementType& a, + const ElementType& t = math::Tolerance::value()) + : absVal(math::Abs(a)), tolVal(math::Abs(t)) + { + } + + /// Return true if the magnitude of the value is not approximately + /// equal to totVal. + inline bool operator()(const ElementType& v) const + { + return math::Abs(math::Abs(v) - absVal) > tolVal; + } + + /// Return true if any of the vector components are infinite. + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const + { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the tile at the iterator location is infinite + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the tile at the iterator location is infinite + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "not equal to +/-"< +struct CheckRange +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + // @brief Constructor taking a range to be tested against. + CheckRange(const ElementType& _min, const ElementType& _max) : minVal(_min), maxVal(_max) + { + if (minVal > maxVal) { + OPENVDB_THROW(ValueError, "CheckRange: Invalid range (min > max)"); + } + } + + /// Return true if the value is smaller than min or larger than max. + inline bool operator()(const ElementType& v) const + { + return (MinInclusive ? vmaxVal : v>=maxVal); + } + + /// Return true if any of the vector components are out of range. + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the voxel at the iterator location is out of range. + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the tile at the iterator location is out of range. + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "outside the value range " << (MinInclusive ? "[" : "]") + << minVal << "," << maxVal << (MaxInclusive ? "]" : "["); + return ss.str(); + } + + const ElementType minVal, maxVal; +};// CheckRange + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Checks a value against a minimum +template +struct CheckMin +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + // @brief Constructor taking a minimum to be tested against. + CheckMin(const ElementType& _min) : minVal(_min) {} + + /// Return true if the value is smaller than min. + inline bool operator()(const ElementType& v) const { return v + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the voxel at the iterator location is smaller than min. + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the tile at the iterator location is smaller than min. + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "smaller than "< +struct CheckMax +{ + using ElementType = typename VecTraits::ElementType; + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + /// @brief Constructor taking a maximum to be tested against. + CheckMax(const ElementType& _max) : maxVal(_max) {} + + /// Return true if the value is larger than max. + inline bool operator()(const ElementType& v) const { return v>maxVal; } + + /// Return true if any of the vector components are larger than max. + template + inline typename std::enable_if::IsVec, bool>::type + operator()(const T& v) const { + for (int i=0; i::Size; ++i) if ((*this)(v[i])) return true; + return false; + } + + /// @brief Return true if the tile at the iterator location is larger than max. + bool operator()(const TreeIterT &iter) const { return (*this)(*iter); } + + /// @brief Return true if the voxel at the iterator location is larger than max. + bool operator()(const VoxelIterT &iter) const { return (*this)(*iter); } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "larger than "<//math::WENO5_BIAS> +struct CheckNormGrad +{ + using ValueType = typename GridT::ValueType; + static_assert(std::is_floating_point::value, + "openvdb::tools::CheckNormGrad requires a scalar, floating-point grid"); + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + using AccT = typename GridT::ConstAccessor; + + /// @brief Constructor taking a grid and a range to be tested against. + CheckNormGrad(const GridT& grid, const ValueType& _min, const ValueType& _max) + : acc(grid.getConstAccessor()) + , invdx2(ValueType(1.0/math::Pow2(grid.voxelSize()[0]))) + , minVal2(_min*_min) + , maxVal2(_max*_max) + { + if ( !grid.hasUniformVoxels() ) { + OPENVDB_THROW(ValueError, "CheckNormGrad: The transform must have uniform scale"); + } + if (_min > _max) { + OPENVDB_THROW(ValueError, "CheckNormGrad: Invalid range (min > max)"); + } + } + + CheckNormGrad(const CheckNormGrad& other) + : acc(other.acc.tree()) + , invdx2(other.invdx2) + , minVal2(other.minVal2) + , maxVal2(other.maxVal2) + { + } + + /// Return true if the value is smaller than min or larger than max. + inline bool operator()(const ValueType& v) const { return vmaxVal2; } + + /// @brief Return true if zero is outside the range. + /// @note We assume that the norm of the gradient of a tile is always zero. + inline bool operator()(const TreeIterT&) const { return (*this)(ValueType(0)); } + + /// @brief Return true if the norm of the gradient at a voxel + /// location of the iterator is out of range. + inline bool operator()(const VoxelIterT &iter) const + { + const Coord ijk = iter.getCoord(); + return (*this)(invdx2 * math::ISGradientNormSqrd::result(acc, ijk)); + } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "outside the range of NormGrad ["< >//math::GradStencil +struct CheckEikonal +{ + using ValueType = typename GridT::ValueType; + static_assert(std::is_floating_point::value, + "openvdb::tools::CheckEikonal requires a scalar, floating-point grid"); + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits ::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + + /// @brief Constructor taking a grid and a range to be tested against. + CheckEikonal(const GridT& grid, const ValueType& _min, const ValueType& _max) + : stencil(grid), minVal(_min), maxVal(_max) + { + if ( !grid.hasUniformVoxels() ) { + OPENVDB_THROW(ValueError, "CheckEikonal: The transform must have uniform scale"); + } + if (minVal > maxVal) { + OPENVDB_THROW(ValueError, "CheckEikonal: Invalid range (min > max)"); + } + } + + CheckEikonal(const CheckEikonal& other) + : stencil(other.stencil.grid()), minVal(other.minVal), maxVal(other.maxVal) + { + } + + /// Return true if the value is smaller than min or larger than max. + inline bool operator()(const ValueType& v) const { return vmaxVal; } + + /// @brief Return true if zero is outside the range. + /// @note We assume that the norm of the gradient of a tile is always zero. + inline bool operator()(const TreeIterT&) const { return (*this)(ValueType(0)); } + + /// @brief Return true if the norm of the gradient at a + /// zero-crossing voxel location of the iterator is out of range. + inline bool operator()(const VoxelIterT &iter) const + { + stencil.moveTo(iter); + if (!stencil.zeroCrossing()) return false; + return (*this)(stencil.normSqGrad()); + } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "outside the range of NormGrad ["< +struct CheckDivergence +{ + using ValueType = typename GridT::ValueType; + using ElementType = typename VecTraits::ElementType; + static_assert(std::is_floating_point::value, + "openvdb::tools::CheckDivergence requires a floating-point vector grid"); + using TileIterT = TreeIterT; + using VoxelIterT = typename tree::IterTraits::template NodeConverter< + typename GridT::TreeType::LeafNodeType>::Type; + using AccT = typename GridT::ConstAccessor; + + /// @brief Constructor taking a grid and a range to be tested against. + CheckDivergence(const GridT& grid, + const ValueType& _min, + const ValueType& _max) + : acc(grid.getConstAccessor()) + , invdx(ValueType(1.0/grid.voxelSize()[0])) + , minVal(_min) + , maxVal(_max) + { + if ( !grid.hasUniformVoxels() ) { + OPENVDB_THROW(ValueError, "CheckDivergence: The transform must have uniform scale"); + } + if (minVal > maxVal) { + OPENVDB_THROW(ValueError, "CheckDivergence: Invalid range (min > max)"); + } + } + /// Return true if the value is smaller than min or larger than max. + inline bool operator()(const ElementType& v) const { return vmaxVal; } + + /// @brief Return true if zero is outside the range. + /// @note We assume that the divergence of a tile is always zero. + inline bool operator()(const TreeIterT&) const { return (*this)(ElementType(0)); } + + /// @brief Return true if the divergence at a voxel location of + /// the iterator is out of range. + inline bool operator()(const VoxelIterT &iter) const + { + const Coord ijk = iter.getCoord(); + return (*this)(invdx * math::ISDivergence::result(acc, ijk)); + } + + /// @brief Return a string describing a failed check. + std::string str() const + { + std::ostringstream ss; + ss << "outside the range of divergence ["< +class Diagnose +{ +public: + using MaskType = typename GridT::template ValueConverter::Type; + + Diagnose(const GridT& grid) : mGrid(&grid), mMask(new MaskType()), mCount(0) + { + mMask->setTransform(grid.transformPtr()->copy()); + } + + template + std::string check(const CheckT& check, + bool updateMask = false, + bool checkVoxels = true, + bool checkTiles = true, + bool checkBackground = true) + { + typename MaskType::TreeType* mask = updateMask ? &(mMask->tree()) : nullptr; + CheckValues cc(mask, mGrid, check); + std::ostringstream ss; + if (checkBackground) ss << cc.checkBackground(); + if (checkTiles) ss << cc.checkTiles(); + if (checkVoxels) ss << cc.checkVoxels(); + mCount += cc.mCount; + return ss.str(); + } + + //@{ + /// @brief Return a boolean mask of all the values + /// (i.e. tiles and/or voxels) that have failed one or + /// more checks. + typename MaskType::ConstPtr mask() const { return mMask; } + typename MaskType::Ptr mask() { return mMask; } + //@} + + /// @brief Return the number of values (i.e. background, tiles or + /// voxels) that have failed one or more checks. + Index64 valueCount() const { return mMask->activeVoxelCount(); } + + /// @brief Return total number of failed checks + /// @note If only one check was performed and the mask was updated + /// failureCount equals valueCount. + Index64 failureCount() const { return mCount; } + + /// @brief Return a const reference to the grid + const GridT& grid() const { return *mGrid; } + + /// @brief Clear the mask and error counter + void clear() { mMask = new MaskType(); mCount = 0; } + +private: + // disallow copy construction and copy by assignment! + Diagnose(const Diagnose&);// not implemented + Diagnose& operator=(const Diagnose&);// not implemented + + const GridT* mGrid; + typename MaskType::Ptr mMask; + Index64 mCount; + + /// @brief Private class that performs the multithreaded checks + template + struct CheckValues + { + using MaskT = typename MaskType::TreeType; + using LeafT = typename GridT::TreeType::LeafNodeType; + using LeafManagerT = typename tree::LeafManager; + const bool mOwnsMask; + MaskT* mMask; + const GridT* mGrid; + const CheckT mCheck; + Index64 mCount; + + CheckValues(MaskT* mask, const GridT* grid, const CheckT& check) + : mOwnsMask(false) + , mMask(mask) + , mGrid(grid) + , mCheck(check) + , mCount(0) + { + } + CheckValues(CheckValues& other, tbb::split) + : mOwnsMask(true) + , mMask(other.mMask ? new MaskT() : nullptr) + , mGrid(other.mGrid) + , mCheck(other.mCheck) + , mCount(0) + { + } + ~CheckValues() { if (mOwnsMask) delete mMask; } + + std::string checkBackground() + { + std::ostringstream ss; + if (mCheck(mGrid->background())) { + ++mCount; + ss << "Background is " + mCheck.str() << std::endl; + } + return ss.str(); + } + + std::string checkTiles() + { + std::ostringstream ss; + const Index64 n = mCount; + typename CheckT::TileIterT i(mGrid->tree()); + for (i.setMaxDepth(GridT::TreeType::RootNodeType::LEVEL - 1); i; ++i) { + if (mCheck(i)) { + ++mCount; + if (mMask) mMask->fill(i.getBoundingBox(), true, true); + } + } + if (const Index64 m = mCount - n) { + ss << m << " tile" << (m==1 ? " is " : "s are ") + mCheck.str() << std::endl; + } + return ss.str(); + } + + std::string checkVoxels() + { + std::ostringstream ss; + LeafManagerT leafs(mGrid->tree()); + const Index64 n = mCount; + tbb::parallel_reduce(leafs.leafRange(), *this); + if (const Index64 m = mCount - n) { + ss << m << " voxel" << (m==1 ? " is " : "s are ") + mCheck.str() << std::endl; + } + return ss.str(); + } + + void operator()(const typename LeafManagerT::LeafRange& r) + { + using VoxelIterT = typename CheckT::VoxelIterT; + if (mMask) { + for (typename LeafManagerT::LeafRange::Iterator i=r.begin(); i; ++i) { + typename MaskT::LeafNodeType* maskLeaf = nullptr; + for (VoxelIterT j = tree::IterTraits::begin(*i); j; ++j) { + if (mCheck(j)) { + ++mCount; + if (maskLeaf == nullptr) maskLeaf = mMask->touchLeaf(j.getCoord()); + maskLeaf->setValueOn(j.pos(), true); + } + } + } + } else { + for (typename LeafManagerT::LeafRange::Iterator i=r.begin(); i; ++i) { + for (VoxelIterT j = tree::IterTraits::begin(*i); j; ++j) { + if (mCheck(j)) ++mCount; + } + } + } + } + void join(const CheckValues& other) + { + if (mMask) mMask->merge(*(other.mMask), openvdb::MERGE_ACTIVE_STATES_AND_NODES); + mCount += other.mCount; + } + };//End of private class CheckValues + +};// End of public class Diagnose + + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Class that performs various types of checks on narrow-band level sets. +/// +/// @note The most common usage is to simply call CheckLevelSet::check() +template +class CheckLevelSet +{ +public: + using ValueType = typename GridType::ValueType; + using MaskType = typename GridType::template ValueConverter::Type; + + CheckLevelSet(const GridType& grid) : mDiagnose(grid) {} + + //@{ + /// @brief Return a boolean mask of all the values + /// (i.e. tiles and/or voxels) that have failed one or + /// more checks. + typename MaskType::ConstPtr mask() const { return mDiagnose.mask(); } + typename MaskType::Ptr mask() { return mDiagnose.mask(); } + //@} + + /// @brief Return the number of values (i.e. background, tiles or + /// voxels) that have failed one or more checks. + Index64 valueCount() const { return mDiagnose.valueCount(); } + + /// @brief Return total number of failed checks + /// @note If only one check was performed and the mask was updated + /// failureCount equals valueCount. + Index64 failureCount() const { return mDiagnose.failureCount(); } + + /// @brief Return a const reference to the grid + const GridType& grid() const { return mDiagnose.grid(); } + + /// @brief Clear the mask and error counter + void clear() { mDiagnose.clear(); } + + /// @brief Return a nonempty message if the grid's value type is a floating point. + /// + /// @note No run-time overhead + static std::string checkValueType() + { + static const bool test = std::is_floating_point::value; + return test ? "" : "Value type is not floating point\n"; + } + + /// @brief Return message if the grid's class is a level set. + /// + /// @note Small run-time overhead + std::string checkClassType() const + { + const bool test = mDiagnose.grid().getGridClass() == GRID_LEVEL_SET; + return test ? "" : "Class type is not \"GRID_LEVEL_SET\"\n"; + } + + /// @brief Return a nonempty message if the grid's transform does not have uniform scaling. + /// + /// @note Small run-time overhead + std::string checkTransform() const + { + return mDiagnose.grid().hasUniformVoxels() ? "" : "Does not have uniform voxels\n"; + } + + /// @brief Return a nonempty message if the background value is larger than or + /// equal to the halfWidth*voxelSize. + /// + /// @note Small run-time overhead + std::string checkBackground(Real halfWidth = LEVEL_SET_HALF_WIDTH) const + { + const Real w = mDiagnose.grid().background() / mDiagnose.grid().voxelSize()[0]; + if (w < halfWidth) { + std::ostringstream ss; + ss << "The background value ("<< mDiagnose.grid().background()<<") is less than " + << halfWidth << " voxel units\n"; + return ss.str(); + } + return ""; + } + + /// @brief Return a nonempty message if the grid has no active tile values. + /// + /// @note Medium run-time overhead + std::string checkTiles() const + { + const bool test = mDiagnose.grid().tree().hasActiveTiles(); + return test ? "Has active tile values\n" : ""; + } + + /// @brief Return a nonempty message if any of the values are not finite. i.e. NaN or inf. + /// + /// @note Medium run-time overhead + std::string checkFinite(bool updateMask = false) + { + CheckFinite c; + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/true, /*background*/true); + } + + /// @brief Return a nonempty message if the active voxel values are out-of-range. + /// + /// @note Medium run-time overhead + std::string checkRange(bool updateMask = false) + { + const ValueType& background = mDiagnose.grid().background(); + CheckRange c(-background, background); + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/false, /*background*/false); + } + + /// @brief Return a nonempty message if the the inactive values do not have a + /// magnitude equal to the background value. + /// + /// @note Medium run-time overhead + std::string checkInactiveValues(bool updateMask = false) + { + const ValueType& background = mDiagnose.grid().background(); + CheckMagnitude c(background); + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/true, /*background*/false); + } + + /// @brief Return a nonempty message if the norm of the gradient of the + /// active voxels is out of the range minV to maxV. + /// + /// @note Significant run-time overhead + std::string checkEikonal(bool updateMask = false, ValueType minV = 0.5, ValueType maxV = 1.5) + { + CheckEikonal c(mDiagnose.grid(), minV, maxV); + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/false, /*background*/false); + } + + /// @brief Return a nonempty message if an error or issue is detected. Only + /// runs tests with a number lower than or equal to n, where: + /// + /// Fast checks + /// 1: value type is floating point + /// 2: has level set class type + /// 3: has uniform scale + /// 4: background value is positive and n*dx + /// + /// Slower checks + /// 5: no active tiles + /// 6: all the values are finite, i.e not NaN or infinite + /// 7: active values in range between +-background + /// 8: abs of inactive values = background, i.e. assuming a symmetric narrow band! + /// + /// Relatively slow check (however multi-threaded) + /// 9: norm of gradient at zero-crossings is one, i.e. satisfied the Eikonal equation. + std::string check(size_t n=9, bool updateMask = false) + { + std::string str = this->checkValueType(); + if (str.empty() && n>1) str = this->checkClassType(); + if (str.empty() && n>2) str = this->checkTransform(); + if (str.empty() && n>3) str = this->checkBackground(); + if (str.empty() && n>4) str = this->checkTiles(); + if (str.empty() && n>5) str = this->checkFinite(updateMask); + if (str.empty() && n>6) str = this->checkRange(updateMask); + if (str.empty() && n>7) str = this->checkInactiveValues(updateMask); + if (str.empty() && n>8) str = this->checkEikonal(updateMask); + return str; + } + +private: + // disallow copy construction and copy by assignment! + CheckLevelSet(const CheckLevelSet&);// not implemented + CheckLevelSet& operator=(const CheckLevelSet&);// not implemented + + // Member data + Diagnose mDiagnose; +};// CheckLevelSet + +template +std::string +checkLevelSet(const GridType& grid, size_t n) +{ + CheckLevelSet c(grid); + return c.check(n, false); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Class that performs various types of checks on fog volumes. +/// +/// @note The most common usage is to simply call CheckFogVolume::check() +template +class CheckFogVolume +{ +public: + using ValueType = typename GridType::ValueType; + using MaskType = typename GridType::template ValueConverter::Type; + + CheckFogVolume(const GridType& grid) : mDiagnose(grid) {} + + //@{ + /// @brief Return a boolean mask of all the values + /// (i.e. tiles and/or voxels) that have failed one or + /// more checks. + typename MaskType::ConstPtr mask() const { return mDiagnose.mask(); } + typename MaskType::Ptr mask() { return mDiagnose.mask(); } + //@} + + /// @brief Return the number of values (i.e. background, tiles or + /// voxels) that have failed one or more checks. + Index64 valueCount() const { return mDiagnose.valueCount(); } + + /// @brief Return total number of failed checks + /// @note If only one check was performed and the mask was updated + /// failureCount equals valueCount. + Index64 failureCount() const { return mDiagnose.failureCount(); } + + /// @brief Return a const reference to the grid + const GridType& grid() const { return mDiagnose.grid(); } + + /// @brief Clear the mask and error counter + void clear() { mDiagnose.clear(); } + + /// @brief Return a nonempty message if the grid's value type is a floating point. + /// + /// @note No run-time overhead + static std::string checkValueType() + { + static const bool test = std::is_floating_point::value; + return test ? "" : "Value type is not floating point"; + } + + /// @brief Return a nonempty message if the grid's class is a level set. + /// + /// @note Small run-time overhead + std::string checkClassType() const + { + const bool test = mDiagnose.grid().getGridClass() == GRID_FOG_VOLUME; + return test ? "" : "Class type is not \"GRID_LEVEL_SET\""; + } + + /// @brief Return a nonempty message if the background value is not zero. + /// + /// @note Small run-time overhead + std::string checkBackground() const + { + if (!math::isApproxZero(mDiagnose.grid().background())) { + std::ostringstream ss; + ss << "The background value ("<< mDiagnose.grid().background()<<") is not zero"; + return ss.str(); + } + return ""; + } + + /// @brief Return a nonempty message if any of the values are not finite. i.e. NaN or inf. + /// + /// @note Medium run-time overhead + std::string checkFinite(bool updateMask = false) + { + CheckFinite c; + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/true, /*background*/true); + } + + /// @brief Return a nonempty message if any of the inactive values are not zero. + /// + /// @note Medium run-time overhead + std::string checkInactiveValues(bool updateMask = false) + { + CheckMagnitude c(0); + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/true, /*background*/true); + } + + /// @brief Return a nonempty message if the active voxel values + /// are out-of-range, i.e. not in the range [0,1]. + /// + /// @note Medium run-time overhead + std::string checkRange(bool updateMask = false) + { + CheckRange c(0, 1); + return mDiagnose.check(c, updateMask, /*voxel*/true, /*tiles*/true, /*background*/false); + } + + /// @brief Return a nonempty message if an error or issue is detected. Only + /// runs tests with a number lower than or equal to n, where: + /// + /// Fast checks + /// 1: value type is floating point + /// 2: has FOG volume class type + /// 3: background value is zero + /// + /// Slower checks + /// 4: all the values are finite, i.e not NaN or infinite + /// 5: inactive values are zero + /// 6: active values are in the range [0,1] + std::string check(size_t n=6, bool updateMask = false) + { + std::string str = this->checkValueType(); + if (str.empty() && n>1) str = this->checkClassType(); + if (str.empty() && n>2) str = this->checkBackground(); + if (str.empty() && n>3) str = this->checkFinite(updateMask); + if (str.empty() && n>4) str = this->checkInactiveValues(updateMask); + if (str.empty() && n>5) str = this->checkRange(updateMask); + return str; + } + +private: + // disallow copy construction and copy by assignment! + CheckFogVolume(const CheckFogVolume&);// not implemented + CheckFogVolume& operator=(const CheckFogVolume&);// not implemented + + // Member data + Diagnose mDiagnose; +};// CheckFogVolume + +template +std::string +checkFogVolume(const GridType& grid, size_t n) +{ + CheckFogVolume c(grid); + return c.check(n, false); +} + + +//////////////////////////////////////////////////////////////////////////////// + +// Internal utility objects and implementation details + + +namespace diagnostics_internal { + + +template +class InactiveVoxelValues +{ +public: + using LeafArray = tree::LeafManager; + using ValueType = typename TreeType::ValueType; + using SetType = std::set; + + InactiveVoxelValues(LeafArray&, size_t numValues); + + void runParallel(); + void runSerial(); + + void getInactiveValues(SetType&) const; + + inline InactiveVoxelValues(const InactiveVoxelValues&, tbb::split); + inline void operator()(const tbb::blocked_range&); + inline void join(const InactiveVoxelValues&); + +private: + LeafArray& mLeafArray; + SetType mInactiveValues; + size_t mNumValues; +};// InactiveVoxelValues + +template +InactiveVoxelValues::InactiveVoxelValues(LeafArray& leafs, size_t numValues) + : mLeafArray(leafs) + , mInactiveValues() + , mNumValues(numValues) +{ +} + +template +inline +InactiveVoxelValues::InactiveVoxelValues( + const InactiveVoxelValues& rhs, tbb::split) + : mLeafArray(rhs.mLeafArray) + , mInactiveValues() + , mNumValues(rhs.mNumValues) +{ +} + +template +void +InactiveVoxelValues::runParallel() +{ + tbb::parallel_reduce(mLeafArray.getRange(), *this); +} + + +template +void +InactiveVoxelValues::runSerial() +{ + (*this)(mLeafArray.getRange()); +} + + +template +inline void +InactiveVoxelValues::operator()(const tbb::blocked_range& range) +{ + typename TreeType::LeafNodeType::ValueOffCIter iter; + + for (size_t n = range.begin(); n < range.end() && !tbb::task::self().is_cancelled(); ++n) { + for (iter = mLeafArray.leaf(n).cbeginValueOff(); iter; ++iter) { + mInactiveValues.insert(iter.getValue()); + } + + if (mInactiveValues.size() > mNumValues) { + tbb::task::self().cancel_group_execution(); + } + } +} + +template +inline void +InactiveVoxelValues::join(const InactiveVoxelValues& rhs) +{ + mInactiveValues.insert(rhs.mInactiveValues.begin(), rhs.mInactiveValues.end()); +} + +template +inline void +InactiveVoxelValues::getInactiveValues(SetType& values) const +{ + values.insert(mInactiveValues.begin(), mInactiveValues.end()); +} + + +//////////////////////////////////////// + + +template +class InactiveTileValues +{ +public: + using IterRange = tree::IteratorRange; + using ValueType = typename TreeType::ValueType; + using SetType = std::set; + + InactiveTileValues(size_t numValues); + + void runParallel(IterRange&); + void runSerial(IterRange&); + + void getInactiveValues(SetType&) const; + + inline InactiveTileValues(const InactiveTileValues&, tbb::split); + inline void operator()(IterRange&); + inline void join(const InactiveTileValues&); + +private: + SetType mInactiveValues; + size_t mNumValues; +}; + + +template +InactiveTileValues::InactiveTileValues(size_t numValues) + : mInactiveValues() + , mNumValues(numValues) +{ +} + +template +inline +InactiveTileValues::InactiveTileValues( + const InactiveTileValues& rhs, tbb::split) + : mInactiveValues() + , mNumValues(rhs.mNumValues) +{ +} + +template +void +InactiveTileValues::runParallel(IterRange& range) +{ + tbb::parallel_reduce(range, *this); +} + + +template +void +InactiveTileValues::runSerial(IterRange& range) +{ + (*this)(range); +} + + +template +inline void +InactiveTileValues::operator()(IterRange& range) +{ + for (; range && !tbb::task::self().is_cancelled(); ++range) { + typename TreeType::ValueOffCIter iter = range.iterator(); + for (; iter; ++iter) { + mInactiveValues.insert(iter.getValue()); + } + + if (mInactiveValues.size() > mNumValues) { + tbb::task::self().cancel_group_execution(); + } + } +} + +template +inline void +InactiveTileValues::join(const InactiveTileValues& rhs) +{ + mInactiveValues.insert(rhs.mInactiveValues.begin(), rhs.mInactiveValues.end()); +} + +template +inline void +InactiveTileValues::getInactiveValues(SetType& values) const +{ + values.insert(mInactiveValues.begin(), mInactiveValues.end()); +} + +} // namespace diagnostics_internal + + +//////////////////////////////////////// + + +template +bool +uniqueInactiveValues(const GridType& grid, + std::vector& values, size_t numValues) +{ + using TreeType = typename GridType::TreeType; + using ValueType = typename GridType::ValueType; + using SetType = std::set; + + SetType uniqueValues; + + { // Check inactive voxels + TreeType& tree = const_cast(grid.tree()); + tree::LeafManager leafs(tree); + diagnostics_internal::InactiveVoxelValues voxelOp(leafs, numValues); + voxelOp.runParallel(); + voxelOp.getInactiveValues(uniqueValues); + } + + // Check inactive tiles + if (uniqueValues.size() <= numValues) { + typename TreeType::ValueOffCIter iter(grid.tree()); + iter.setMaxDepth(TreeType::ValueAllIter::LEAF_DEPTH - 1); + diagnostics_internal::InactiveTileValues tileOp(numValues); + + tree::IteratorRange range(iter); + tileOp.runParallel(range); + + tileOp.getInactiveValues(uniqueValues); + } + + values.clear(); + values.reserve(uniqueValues.size()); + + typename SetType::iterator it = uniqueValues.begin(); + for ( ; it != uniqueValues.end(); ++it) { + values.push_back(*it); + } + + return values.size() <= numValues; +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_DIAGNOSTICS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Filter.h b/openvdb/tools/Filter.h new file mode 100644 index 00000000..0823685b --- /dev/null +++ b/openvdb/tools/Filter.h @@ -0,0 +1,445 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file tools/Filter.h +/// +/// @brief Filtering of VDB volumes. Note that only the values in the +/// grid are changed, not its topology! All operations can optionally +/// be masked with another grid that acts as an alpha-mask. + +#ifndef OPENVDB_TOOLS_FILTER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_FILTER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include "Interpolation.h" +#include // for std::max() +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Volume filtering (e.g., diffusion) with optional alpha masking +/// +/// @note Only the values in the grid are changed, not its topology! +template::Type, + typename InterruptT = util::NullInterrupter> +class Filter +{ +public: + using GridType = GridT; + using MaskType = MaskT; + using TreeType = typename GridType::TreeType; + using LeafType = typename TreeType::LeafNodeType; + using ValueType = typename GridType::ValueType; + using AlphaType = typename MaskType::ValueType; + using LeafManagerType = typename tree::LeafManager; + using RangeType = typename LeafManagerType::LeafRange; + using BufferType = typename LeafManagerType::BufferType; + static_assert(std::is_floating_point::value, + "openvdb::tools::Filter requires a mask grid with floating-point values"); + + /// Constructor + /// @param grid Grid to be filtered. + /// @param interrupt Optional interrupter. + Filter(GridT& grid, InterruptT* interrupt = nullptr) + : mGrid(&grid) + , mTask(nullptr) + , mInterrupter(interrupt) + , mMask(nullptr) + , mGrainSize(1) + , mMinMask(0) + , mMaxMask(1) + , mInvertMask(false) + { + } + + /// @brief Shallow copy constructor called by tbb::parallel_for() + /// threads during filtering. + /// @param other The other Filter from which to copy. + Filter(const Filter& other) + : mGrid(other.mGrid) + , mTask(other.mTask) + , mInterrupter(other.mInterrupter) + , mMask(other.mMask) + , mGrainSize(other.mGrainSize) + , mMinMask(other.mMinMask) + , mMaxMask(other.mMaxMask) + , mInvertMask(other.mInvertMask) + { + } + + /// @return the grain-size used for multi-threading + int getGrainSize() const { return mGrainSize; } + /// @brief Set the grain-size used for multi-threading. + /// @note A grain size of 0 or less disables multi-threading! + void setGrainSize(int grainsize) { mGrainSize = grainsize; } + + /// @brief Return the minimum value of the mask to be used for the + /// derivation of a smooth alpha value. + AlphaType minMask() const { return mMinMask; } + /// @brief Return the maximum value of the mask to be used for the + /// derivation of a smooth alpha value. + AlphaType maxMask() const { return mMaxMask; } + /// @brief Define the range for the (optional) scalar mask. + /// @param min Minimum value of the range. + /// @param max Maximum value of the range. + /// @details Mask values outside the range are clamped to zero or one, and + /// values inside the range map smoothly to 0->1 (unless the mask is inverted). + /// @throw ValueError if @a min is not smaller than @a max. + void setMaskRange(AlphaType min, AlphaType max) + { + if (!(min < max)) OPENVDB_THROW(ValueError, "Invalid mask range (expects min < max)"); + mMinMask = min; + mMaxMask = max; + } + + /// @brief Return true if the mask is inverted, i.e. min->max in the + /// original mask maps to 1->0 in the inverted alpha mask. + bool isMaskInverted() const { return mInvertMask; } + /// @brief Invert the optional mask, i.e. min->max in the original + /// mask maps to 1->0 in the inverted alpha mask. + void invertMask(bool invert=true) { mInvertMask = invert; } + + /// @brief One iteration of a fast separable mean-value (i.e. box) filter. + /// @param width The width of the mean-value filter is 2*width+1 voxels. + /// @param iterations Number of times the mean-value filter is applied. + /// @param mask Optional alpha mask. + void mean(int width = 1, int iterations = 1, const MaskType* mask = nullptr); + + /// @brief One iteration of a fast separable Gaussian filter. + /// + /// @note This is approximated as 4 iterations of a separable mean filter + /// which typically leads an approximation that's better than 95%! + /// @param width The width of the mean-value filter is 2*width+1 voxels. + /// @param iterations Number of times the mean-value filter is applied. + /// @param mask Optional alpha mask. + void gaussian(int width = 1, int iterations = 1, const MaskType* mask = nullptr); + + /// @brief One iteration of a median-value filter + /// + /// @note This filter is not separable and is hence relatively slow! + /// @param width The width of the mean-value filter is 2*width+1 voxels. + /// @param iterations Number of times the mean-value filter is applied. + /// @param mask Optional alpha mask. + void median(int width = 1, int iterations = 1, const MaskType* mask = nullptr); + + /// Offsets (i.e. adds) a constant value to all active voxels. + /// @param offset Offset in the same units as the grid. + /// @param mask Optional alpha mask. + void offset(ValueType offset, const MaskType* mask = nullptr); + + /// @brief Used internally by tbb::parallel_for() + /// @param range Range of LeafNodes over which to multi-thread. + /// + /// @warning Never call this method directly! + void operator()(const RangeType& range) const + { + if (mTask) mTask(const_cast(this), range); + else OPENVDB_THROW(ValueError, "task is undefined - call median(), mean(), etc."); + } + +private: + using LeafT = typename TreeType::LeafNodeType; + using VoxelIterT = typename LeafT::ValueOnIter; + using VoxelCIterT = typename LeafT::ValueOnCIter; + using BufferT = typename tree::LeafManager::BufferType; + using LeafIterT = typename RangeType::Iterator; + using AlphaMaskT = tools::AlphaMask; + + void cook(LeafManagerType& leafs); + + template + struct Avg { + Avg(const GridT* grid, Int32 w): acc(grid->tree()), width(w), frac(1.f/float(2*w+1)) {} + inline ValueType operator()(Coord xyz); + typename GridT::ConstAccessor acc; + const Int32 width; + const float frac; + }; + + // Private filter methods called by tbb::parallel_for threads + template + void doBox( const RangeType& r, Int32 w); + void doBoxX(const RangeType& r, Int32 w) { this->doBox >(r,w); } + void doBoxZ(const RangeType& r, Int32 w) { this->doBox >(r,w); } + void doBoxY(const RangeType& r, Int32 w) { this->doBox >(r,w); } + void doMedian(const RangeType&, int); + void doOffset(const RangeType&, ValueType); + /// @return true if the process was interrupted + bool wasInterrupted(); + + GridType* mGrid; + typename std::function mTask; + InterruptT* mInterrupter; + const MaskType* mMask; + int mGrainSize; + AlphaType mMinMask, mMaxMask; + bool mInvertMask; +}; // end of Filter class + + +//////////////////////////////////////// + + +namespace filter_internal { +// Helper function for Filter::Avg::operator() +template static inline void accum(T& sum, T addend) { sum += addend; } +// Overload for bool ValueType +inline void accum(bool& sum, bool addend) { sum = sum || addend; } +} + + +template +template +inline typename GridT::ValueType +Filter::Avg::operator()(Coord xyz) +{ + ValueType sum = zeroVal(); + Int32 &i = xyz[Axis], j = i + width; + for (i -= width; i <= j; ++i) filter_internal::accum(sum, acc.getValue(xyz)); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + ValueType value = static_cast(sum * frac); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return value; +} + + +//////////////////////////////////////// + + +template +inline void +Filter::mean(int width, int iterations, const MaskType* mask) +{ + mMask = mask; + + if (mInterrupter) mInterrupter->start("Applying mean filter"); + + const int w = std::max(1, width); + + LeafManagerType leafs(mGrid->tree(), 1, mGrainSize==0); + + for (int i=0; iwasInterrupted(); ++i) { + mTask = std::bind(&Filter::doBoxX, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + + mTask = std::bind(&Filter::doBoxY, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + + mTask = std::bind(&Filter::doBoxZ, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + } + + if (mInterrupter) mInterrupter->end(); +} + + +template +inline void +Filter::gaussian(int width, int iterations, const MaskType* mask) +{ + mMask = mask; + + if (mInterrupter) mInterrupter->start("Applying Gaussian filter"); + + const int w = std::max(1, width); + + LeafManagerType leafs(mGrid->tree(), 1, mGrainSize==0); + + for (int i=0; iwasInterrupted(); ++n) { + mTask = std::bind(&Filter::doBoxX, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + + mTask = std::bind(&Filter::doBoxY, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + + mTask = std::bind(&Filter::doBoxZ, std::placeholders::_1, std::placeholders::_2, w); + this->cook(leafs); + } + } + + if (mInterrupter) mInterrupter->end(); +} + + +template +inline void +Filter::median(int width, int iterations, const MaskType* mask) +{ + mMask = mask; + + if (mInterrupter) mInterrupter->start("Applying median filter"); + + LeafManagerType leafs(mGrid->tree(), 1, mGrainSize==0); + + mTask = std::bind(&Filter::doMedian, + std::placeholders::_1, std::placeholders::_2, std::max(1, width)); + for (int i=0; iwasInterrupted(); ++i) this->cook(leafs); + + if (mInterrupter) mInterrupter->end(); +} + + +template +inline void +Filter::offset(ValueType value, const MaskType* mask) +{ + mMask = mask; + + if (mInterrupter) mInterrupter->start("Applying offset"); + + LeafManagerType leafs(mGrid->tree(), 0, mGrainSize==0); + + mTask = std::bind(&Filter::doOffset, std::placeholders::_1, std::placeholders::_2, value); + this->cook(leafs); + + if (mInterrupter) mInterrupter->end(); +} + + +//////////////////////////////////////// + + +/// Private method to perform the task (serial or threaded) and +/// subsequently swap the leaf buffers. +template +inline void +Filter::cook(LeafManagerType& leafs) +{ + if (mGrainSize>0) { + tbb::parallel_for(leafs.leafRange(mGrainSize), *this); + } else { + (*this)(leafs.leafRange()); + } + leafs.swapLeafBuffer(1, mGrainSize==0); +} + + +/// One dimensional convolution of a separable box filter +template +template +inline void +Filter::doBox(const RangeType& range, Int32 w) +{ + this->wasInterrupted(); + AvgT avg(mGrid, w); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(*mGrid, *mMask, mMinMask, mMaxMask, mInvertMask); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + BufferT& buffer = leafIter.buffer(1); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + const Coord xyz = iter.getCoord(); + if (alpha(xyz, a, b)) { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueType value(b*(*iter) + a*avg(xyz)); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + buffer.setValue(iter.pos(), value); + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + BufferT& buffer = leafIter.buffer(1); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + buffer.setValue(iter.pos(), avg(iter.getCoord())); + } + } + } +} + + +/// Performs simple but slow median-value diffusion +template +inline void +Filter::doMedian(const RangeType& range, int width) +{ + this->wasInterrupted(); + typename math::DenseStencil stencil(*mGrid, width);//creates local cache! + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(*mGrid, *mMask, mMinMask, mMaxMask, mInvertMask); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + BufferT& buffer = leafIter.buffer(1); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) { + stencil.moveTo(iter); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + ValueType value(b*(*iter) + a*stencil.median()); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + buffer.setValue(iter.pos(), value); + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + BufferT& buffer = leafIter.buffer(1); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + stencil.moveTo(iter); + buffer.setValue(iter.pos(), stencil.median()); + } + } + } +} + + +/// Offsets the values by a constant +template +inline void +Filter::doOffset(const RangeType& range, ValueType offset) +{ + this->wasInterrupted(); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(*mGrid, *mMask, mMinMask, mMaxMask, mInvertMask); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + for (VoxelIterT iter = leafIter->beginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + ValueType value(*iter + a*offset); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + iter.setValue(value); + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + for (VoxelIterT iter = leafIter->beginValueOn(); iter; ++iter) { + iter.setValue(*iter + offset); + } + } + } +} + + +template +inline bool +Filter::wasInterrupted() +{ + if (util::wasInterrupted(mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return true; + } + return false; +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_FILTER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/FindActiveValues.h b/openvdb/tools/FindActiveValues.h new file mode 100644 index 00000000..feb06e1f --- /dev/null +++ b/openvdb/tools/FindActiveValues.h @@ -0,0 +1,430 @@ +/////////////////////////////////////////////////////////////////////////// +// +// Copyright (c) Ken Museth +// +// All rights reserved. This software is distributed under the +// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ ) +// +// Redistributions of source code must retain the above copyright +// and license notice and the following restrictions and disclaimer. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE +// LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00. +// +/////////////////////////////////////////////////////////////////////////// +// +/// @file FindActiveValues.h +/// +/// @brief Finds the active values in a tree which intersects a bounding box. +/// Two methods are provided, one that counts the number of active values +/// and one that simply tests if any active values intersect the bbox. +/// +/// @warning For repeated calls to the free-standing functions defined below +/// consider instead creating an instance of FindActiveValues +/// and then repeatedly call its member methods. This assumes the tree +/// to be constant between calls but is sightly faster. +/// +/// @author Ken Museth + +#ifndef OPENVDB_TOOLS_FINDACTIVEVALUES_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_FINDACTIVEVALUES_HAS_BEEN_INCLUDED + +#include +#include // for OPENVDB_VERSION_NAME +#include +#include + +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Returns true if the bounding box intersects any of the active +/// values in a tree, i.e. either active voxels or active tiles. +/// +/// @warning For repeated calls to this method consider instead creating an instance of +/// FindActiveValues and then repeatedly call any(). This assumes the tree +/// to be constant between calls but is slightly faster. +/// +/// @param tree const tree to be tested for active values. +/// @param bbox index bounding box which is intersected against the active values. +template +inline bool +anyActiveValues(const TreeT& tree, const CoordBBox &bbox); + +/// @brief Returns true if the bounding box intersects none of the active +/// values in a tree, i.e. neither active voxels or active tiles. +/// +/// @warning For repeated calls to this method consider instead creating an instance of +/// FindActiveValues and then repeatedly call none(). This assumes the tree +/// to be constant between calls but is slightly faster. +/// +/// @param tree const tree to be tested for active values. +/// @param bbox index bounding box which is intersected against the active values. +template +inline bool +noActiveValues(const TreeT& tree, const CoordBBox &bbox); + +/// @brief Returns the number of active values that intersects a bounding box intersects, +/// i.e. the count includes both active voxels and virtual voxels in active tiles. +/// +/// @warning For repeated calls to this method consider instead creating an instance of +/// FindActiveValues and then repeatedly call count(). This assumes the tree +/// to be constant between calls but is slightly faster. +/// +/// @param tree const tree to be tested for active values. +/// @param bbox index bounding box which is intersected against the active values. +template +inline Index64 +countActiveValues(const TreeT& tree, const CoordBBox &bbox); + +////////////////////////////////////////////////////////////////////////////////////////// + +/// @brief Finds the active values in a tree which intersects a bounding box. +/// +/// @details Two methods are provided, one that count the number of active values +/// and one that simply tests if any active values intersect the bbox. +/// +/// @warning Tree nodes are cached by this class so it's important that the tree is not +/// modified after this class is instantiated and before its methods are called. +template +class FindActiveValues +{ +public: + + /// @brief Constructor from a const tree, which is assumed not to be modified after construction. + FindActiveValues(const TreeT& tree); + + /// @brief Default destructor + ~FindActiveValues(); + + /// @brief Initiate this class with a new (or modified) tree. + void update(const TreeT& tree); + + /// @brief Returns true if the specified bounding box intersects any active values. + /// + /// @warning Using a ValueAccessor (i.e. useAccessor = true) can improve performance for especially + /// small bounding boxes, but at the cost of no thread-safety. So if multiple threads are + /// calling this method concurrently use the default setting, useAccessor = false. + bool any(const CoordBBox &bbox, bool useAccessor = false) const; + + /// @brief Returns true if the specified bounding box does not intersect any active values. + /// + /// @warning Using a ValueAccessor (i.e. useAccessor = true) can improve performance for especially + /// small bounding boxes, but at the cost of no thread-safety. So if multiple threads are + /// calling this method concurrently use the default setting, useAccessor = false. + bool none(const CoordBBox &bbox, bool useAccessor = false) const { return !this->any(bbox, useAccessor); } + + /// @brief Returns the number of active voxels intersected by the specified bounding box. + Index64 count(const CoordBBox &bbox) const; + +private: + + // Cleans up internal data structures + void clear(); + + // builds internal data structures + void init(const TreeT &tree); + + template + typename NodeT::NodeMaskType getBBoxMask(const CoordBBox &bbox, const NodeT* node) const; + + // process leaf node + inline bool any(const typename TreeT::LeafNodeType* leaf, const CoordBBox &bbox ) const; + + // process leaf node + inline Index64 count(const typename TreeT::LeafNodeType* leaf, const CoordBBox &bbox ) const; + + // process internal node + template + bool any(const NodeT* node, const CoordBBox &bbox) const; + + // process internal node + template + Index64 count(const NodeT* node, const CoordBBox &bbox) const; + + using AccT = tree::ValueAccessor; + using RootChildT = typename TreeT::RootNodeType::ChildNodeType; + + struct NodePairT; + + AccT mAcc; + std::vector mRootTiles;// cache bbox of child nodes (faster to cache than access RootNode) + std::vector mRootNodes;// cache bbox of acive tiles (faster to cache than access RootNode) + +};// FindActiveValues class + +////////////////////////////////////////////////////////////////////////////////////////// + +template +FindActiveValues::FindActiveValues(const TreeT& tree) : mAcc(tree), mRootTiles(), mRootNodes() +{ + this->init(tree); +} + +template +FindActiveValues::~FindActiveValues() +{ + this->clear(); +} + +template +void FindActiveValues::update(const TreeT& tree) +{ + this->clear(); + mAcc = AccT(tree); + this->init(tree); +} + +template +void FindActiveValues::clear() +{ + mRootNodes.clear(); + mRootTiles.clear(); +} + +template +void FindActiveValues::init(const TreeT& tree) +{ + for (auto i = tree.root().cbeginChildOn(); i; ++i) { + mRootNodes.emplace_back(i.getCoord(), &*i); + } + for (auto i = tree.root().cbeginValueOn(); i; ++i) { + mRootTiles.emplace_back(CoordBBox::createCube(i.getCoord(), RootChildT::DIM)); + } +} + +template +bool FindActiveValues::any(const CoordBBox &bbox, bool useAccessor) const +{ + if (useAccessor) { + if (mAcc.isValueOn( (bbox.min() + bbox.max())>>1 )) return true; + } else { + if (mAcc.tree().isValueOn( (bbox.min() + bbox.max())>>1 )) return true; + } + + for (auto& tile : mRootTiles) { + if (tile.hasOverlap(bbox)) return true; + } + for (auto& node : mRootNodes) { + if (!node.bbox.hasOverlap(bbox)) { + continue; + } else if (node.bbox.isInside(bbox)) { + return this->any(node.child, bbox); + } else if (this->any(node.child, bbox)) { + return true; + } + } + return false; +} + +template +Index64 FindActiveValues::count(const CoordBBox &bbox) const +{ + Index64 count = 0; + for (auto& tile : mRootTiles) {//loop over active tiles only + if (!tile.hasOverlap(bbox)) { + continue;//ignore non-overlapping tiles + } else if (tile.isInside(bbox)) { + return bbox.volume();// bbox is completely inside the active tile + } else if (bbox.isInside(tile)) { + count += RootChildT::NUM_VOXELS; + } else { + auto tmp = tile; + tmp.intersect(bbox); + count += tmp.volume(); + } + } + for (auto &node : mRootNodes) {//loop over child nodes of the root node only + if ( !node.bbox.hasOverlap(bbox) ) { + continue;//ignore non-overlapping child nodes + } else if ( node.bbox.isInside(bbox) ) { + return this->count(node.child, bbox);// bbox is completely inside the child node + } else { + count += this->count(node.child, bbox); + } + } + return count; +} + +template +template +typename NodeT::NodeMaskType FindActiveValues::getBBoxMask(const CoordBBox &bbox, const NodeT* node) const +{ + typename NodeT::NodeMaskType mask; + auto b = node->getNodeBoundingBox(); + assert( bbox.hasOverlap(b) ); + if ( bbox.isInside(b) ) { + mask.setOn();//node is completely inside the bbox so early out + } else { + b.intersect(bbox); + b.min() &= NodeT::DIM-1u; + b.min() >>= NodeT::ChildNodeType::TOTAL; + b.max() &= NodeT::DIM-1u; + b.max() >>= NodeT::ChildNodeType::TOTAL; + assert( b.hasVolume() ); + auto it = b.begin(); + for (const Coord& x = *it; it; ++it) { + mask.setOn(x[2] + (x[1] << NodeT::LOG2DIM) + (x[0] << 2*NodeT::LOG2DIM)); + } + } + return mask; +} + +template +template +bool FindActiveValues::any(const NodeT* node, const CoordBBox &bbox) const +{ + // Generate a bit mask of the bbox coverage + auto mask = this->getBBoxMask(bbox, node); + + // Check active tiles + const auto tmp = mask & node->getValueMask();// prune active the tile mask with the bbox mask + if (!tmp.isOff()) return true; + + // Check child nodes + mask &= node->getChildMask();// prune the child mask with the bbox mask + const auto* table = node->getTable(); + bool test = false; + for (auto i = mask.beginOn(); !test && i; ++i) { + test = this->any(table[i.pos()].getChild(), bbox); + } + return test; +} + +template +inline bool FindActiveValues::any(const typename TreeT::LeafNodeType* leaf, const CoordBBox &bbox ) const +{ + bool test = leaf->getValueMask().isOn(); + + for (auto i = leaf->cbeginValueOn(); !test && i; ++i) { + test = bbox.isInside(i.getCoord()); + } + return test; +} + +template +inline Index64 FindActiveValues::count(const typename TreeT::LeafNodeType* leaf, const CoordBBox &bbox ) const +{ + Index64 count = 0; + if (leaf->getValueMask().isOn()) { + auto b = leaf->getNodeBoundingBox(); + b.intersect(bbox); + count = b.volume(); + } else { + for (auto i = leaf->cbeginValueOn(); i; ++i) { + if (bbox.isInside(i.getCoord())) ++count; + } + } + return count; +} + +template +template +Index64 FindActiveValues::count(const NodeT* node, const CoordBBox &bbox) const +{ + Index64 count = 0; + + // Generate a bit masks + auto mask = this->getBBoxMask(bbox, node); + const auto childMask = mask & node->getChildMask();// prune the child mask with the bbox mask + mask &= node->getValueMask();// prune active tile mask with the bbox mask + const auto* table = node->getTable(); + + {// Check child nodes + using ChildT = typename NodeT::ChildNodeType; + using RangeT = tbb::blocked_range::iterator>; + std::vector childNodes(childMask.countOn()); + int j=0; + for (auto i = childMask.beginOn(); i; ++i, ++j) childNodes[j] = table[i.pos()].getChild(); + count += tbb::parallel_reduce( RangeT(childNodes.begin(), childNodes.end()), 0, + [&](const RangeT& r, Index64 sum)->Index64 { + for ( auto i = r.begin(); i != r.end(); ++i ) sum += this->count(*i, bbox); + return sum; + }, []( Index64 a, Index64 b )->Index64 { return a+b; } + ); + } + + {// Check active tiles + std::vector coords(mask.countOn()); + using RangeT = tbb::blocked_range::iterator>; + int j=0; + for (auto i = mask.beginOn(); i; ++i, ++j) coords[j] = node->offsetToGlobalCoord(i.pos()); + count += tbb::parallel_reduce( RangeT(coords.begin(), coords.end()), 0, + [&bbox](const RangeT& r, Index64 sum)->Index64 { + for ( auto i = r.begin(); i != r.end(); ++i ) { + auto b = CoordBBox::createCube(*i, NodeT::ChildNodeType::DIM); + b.intersect(bbox); + sum += b.volume(); + } + return sum; + }, []( Index64 a, Index64 b )->Index64 { return a+b; } + ); + } + + return count; +} + +template +struct FindActiveValues::NodePairT +{ + const RootChildT* child; + const CoordBBox bbox; + NodePairT(const Coord& c = Coord(), const RootChildT* p = nullptr) + : child(p), bbox(CoordBBox::createCube(c, RootChildT::DIM)) + { + } +};// NodePairT struct + +////////////////////////////////////////////////////////////////////////////////////////// + +// Implementation of stand-alone function +template +inline bool +anyActiveValues(const TreeT& tree, const CoordBBox &bbox) +{ + FindActiveValues op(tree); + return op.any(bbox); +} + +// Implementation of stand-alone function +template +inline bool +noActiveValues(const TreeT& tree, const CoordBBox &bbox) +{ + FindActiveValues op(tree); + return op.none(bbox); +} + +// Implementation of stand-alone function +template +inline bool +countActiveValues(const TreeT& tree, const CoordBBox &bbox) +{ + FindActiveValues op(tree); + return op.count(bbox); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_FINDACTIVEVALUES_HAS_BEEN_INCLUDED + +// Copyright (c) Ken Museth +// All rights reserved. This software is distributed under the +// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ ) diff --git a/openvdb/tools/GridOperators.h b/openvdb/tools/GridOperators.h new file mode 100644 index 00000000..31305a1a --- /dev/null +++ b/openvdb/tools/GridOperators.h @@ -0,0 +1,1083 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tools/GridOperators.h +/// +/// @brief Apply an operator to an input grid to produce an output grid +/// with the same active voxel topology but a potentially different value type. + +#ifndef OPENVDB_TOOLS_GRID_OPERATORS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_GRID_OPERATORS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include "ValueTransformer.h" // for tools::foreach() +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief VectorToScalarConverter::Type is the type of a grid +/// having the same tree configuration as VectorGridType but a scalar value type, T, +/// where T is the type of the original vector components. +/// @details For example, VectorToScalarConverter::Type is equivalent to DoubleGrid. +template struct VectorToScalarConverter { + typedef typename VectorGridType::ValueType::value_type VecComponentValueT; + typedef typename VectorGridType::template ValueConverter::Type Type; +}; + +/// @brief ScalarToVectorConverter::Type is the type of a grid +/// having the same tree configuration as ScalarGridType but value type Vec3 +/// where T is ScalarGridType::ValueType. +/// @details For example, ScalarToVectorConverter::Type is equivalent to Vec3DGrid. +template struct ScalarToVectorConverter { + typedef math::Vec3 VectorValueT; + typedef typename ScalarGridType::template ValueConverter::Type Type; +}; + + +/// @brief Compute the Closest-Point Transform (CPT) from a distance field. +/// @return a new vector-valued grid with the same numerical precision as the input grid +/// (for example, if the input grid is a DoubleGrid, the output grid will be a Vec3DGrid) +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, bool threaded = true) +{ + return cpt(grid, threaded, nullptr); +} + +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return cpt(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the curl of the given vector-valued grid. +/// @return a new vector-valued grid +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename GridType::Ptr +curl(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +curl(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +curl(const GridType& grid, bool threaded = true) +{ + return curl(grid, threaded, nullptr); +} + +template inline +typename GridType::Ptr +curl(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return curl(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the divergence of the given vector-valued grid. +/// @return a new scalar-valued grid with the same numerical precision as the input grid +/// (for example, if the input grid is a Vec3DGrid, the output grid will be a DoubleGrid) +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, bool threaded = true) +{ + return divergence(grid, threaded, nullptr); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return divergence(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the gradient of the given scalar grid. +/// @return a new vector-valued grid with the same numerical precision as the input grid +/// (for example, if the input grid is a DoubleGrid, the output grid will be a Vec3DGrid) +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, bool threaded = true) +{ + return gradient(grid, threaded, nullptr); +} + +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return gradient(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the Laplacian of the given scalar grid. +/// @return a new scalar grid +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename GridType::Ptr +laplacian(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +laplacian(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +laplacian(const GridType& grid, bool threaded = true) +{ + return laplacian(grid, threaded, nullptr); +} + +template inline +typename GridType::Ptr +laplacian(const GridType& grid, const MaskT mask, bool threaded = true) +{ + return laplacian(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the mean curvature of the given grid. +/// @return a new grid +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, bool threaded = true) +{ + return meanCurvature(grid, threaded, nullptr); +} + +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return meanCurvature(grid, mask, threaded, nullptr); +} + + +/// @brief Compute the magnitudes of the vectors of the given vector-valued grid. +/// @return a new scalar-valued grid with the same numerical precision as the input grid +/// (for example, if the input grid is a Vec3DGrid, the output grid will be a DoubleGrid) +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, bool threaded = true) +{ + return magnitude(grid, threaded, nullptr); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return magnitude(grid, mask, threaded, nullptr); +} + + +/// @brief Normalize the vectors of the given vector-valued grid. +/// @return a new vector-valued grid +/// @details When a mask grid is specified, the solution is calculated only in +/// the intersection of the mask active topology and the input active topology +/// independent of the transforms associated with either grid. +template inline +typename GridType::Ptr +normalize(const GridType& grid, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +normalize(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt); + +template inline +typename GridType::Ptr +normalize(const GridType& grid, bool threaded = true) +{ + return normalize(grid, threaded, nullptr); +} + +template inline +typename GridType::Ptr +normalize(const GridType& grid, const MaskT& mask, bool threaded = true) +{ + return normalize(grid, mask, threaded, nullptr); +} + + +//////////////////////////////////////// + + +namespace gridop { + +/// @brief ToMaskGrid::Type is the type of a grid having the same +/// tree hierarchy as grid type T but a value equal to its active state. +/// @details For example, ToMaskGrid::Type is equivalent to MaskGrid. +template +struct ToMaskGrid { + typedef Grid::Type> Type; +}; + + +/// @brief Apply an operator to an input grid to produce an output grid +/// with the same active voxel topology but a potentially different value type. +/// @details To facilitate inlining, this class is also templated on a Map type. +/// +/// @note This is a helper class and should never be used directly. +template< + typename InGridT, + typename MaskGridType, + typename OutGridT, + typename MapT, + typename OperatorT, + typename InterruptT = util::NullInterrupter> +class GridOperator +{ +public: + typedef typename OutGridT::TreeType OutTreeT; + typedef typename OutTreeT::LeafNodeType OutLeafT; + typedef typename tree::LeafManager LeafManagerT; + + GridOperator(const InGridT& grid, const MaskGridType* mask, const MapT& map, + InterruptT* interrupt = nullptr, bool densify = true) + : mAcc(grid.getConstAccessor()) + , mMap(map) + , mInterrupt(interrupt) + , mMask(mask) + , mDensify(densify) ///< @todo consider adding a "NeedsDensification" operator trait + { + } + GridOperator(const GridOperator&) = default; + GridOperator& operator=(const GridOperator&) = default; + virtual ~GridOperator() = default; + + typename OutGridT::Ptr process(bool threaded = true) + { + if (mInterrupt) mInterrupt->start("Processing grid"); + + // Derive background value of the output grid + typename InGridT::TreeType tmp(mAcc.tree().background()); + typename OutGridT::ValueType backg = OperatorT::result(mMap, tmp, math::Coord(0)); + + // The output tree is topology copy, optionally densified, of the input tree. + // (Densification is necessary for some operators because applying the operator to + // a constant tile produces distinct output values, particularly along tile borders.) + /// @todo Can tiles be handled correctly without densification, or by densifying + /// only to the width of the operator stencil? + typename OutTreeT::Ptr tree(new OutTreeT(mAcc.tree(), backg, TopologyCopy())); + if (mDensify) tree->voxelizeActiveTiles(); + + // create grid with output tree and unit transform + typename OutGridT::Ptr result(new OutGridT(tree)); + + // Modify the solution area if a mask was supplied. + if (mMask) { + result->topologyIntersection(*mMask); + } + + // transform of output grid = transform of input grid + result->setTransform(math::Transform::Ptr(new math::Transform( mMap.copy() ))); + + LeafManagerT leafManager(*tree); + + if (threaded) { + tbb::parallel_for(leafManager.leafRange(), *this); + } else { + (*this)(leafManager.leafRange()); + } + + // If the tree wasn't densified, it might have active tiles that need to be processed. + if (!mDensify) { + using TileIter = typename OutTreeT::ValueOnIter; + + TileIter tileIter = tree->beginValueOn(); + tileIter.setMaxDepth(tileIter.getLeafDepth() - 1); // skip leaf values (i.e., voxels) + + AccessorT inAcc = mAcc; // each thread needs its own accessor, captured by value + auto tileOp = [this, inAcc](const TileIter& it) { + // Apply the operator to the input grid's tile value at the iterator's + // current coordinates, and set the output tile's value to the result. + it.setValue(OperatorT::result(this->mMap, inAcc, it.getCoord())); + }; + + // Apply the operator to tile values, optionally in parallel. + // (But don't share the functor; each thread needs its own accessor.) + tools::foreach(tileIter, tileOp, threaded, /*shareFunctor=*/false); + } + + if (mDensify) tree->prune(); + + if (mInterrupt) mInterrupt->end(); + return result; + } + + /// @brief Iterate sequentially over LeafNodes and voxels in the output + /// grid and apply the operator using a value accessor for the input grid. + /// + /// @note Never call this public method directly - it is called by + /// TBB threads only! + void operator()(const typename LeafManagerT::LeafRange& range) const + { + if (util::wasInterrupted(mInterrupt)) tbb::task::self().cancel_group_execution(); + + for (typename LeafManagerT::LeafRange::Iterator leaf=range.begin(); leaf; ++leaf) { + for (typename OutLeafT::ValueOnIter value=leaf->beginValueOn(); value; ++value) { + value.setValue(OperatorT::result(mMap, mAcc, value.getCoord())); + } + } + } + +protected: + typedef typename InGridT::ConstAccessor AccessorT; + mutable AccessorT mAcc; + const MapT& mMap; + InterruptT* mInterrupt; + const MaskGridType* mMask; + const bool mDensify; +}; // end of GridOperator class + +} // namespace gridop + + +//////////////////////////////////////// + + +/// @brief Compute the closest-point transform of a scalar grid. +template< + typename InGridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Cpt +{ +public: + typedef InGridT InGridType; + typedef typename ScalarToVectorConverter::Type OutGridType; + + Cpt(const InGridType& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Cpt(const InGridType& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename OutGridType::Ptr process(bool threaded = true, bool useWorldTransform = true) + { + Functor functor(mInputGrid, mMask, threaded, useWorldTransform, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (functor.mOutputGrid) functor.mOutputGrid->setVectorType(VEC_CONTRAVARIANT_ABSOLUTE); + return functor.mOutputGrid; + } + +private: + struct IsOpT + { + template + static typename OutGridType::ValueType + result(const MapT& map, const AccT& acc, const Coord& xyz) + { + return math::CPT::result(map, acc, xyz); + } + }; + struct WsOpT + { + template + static typename OutGridType::ValueType + result(const MapT& map, const AccT& acc, const Coord& xyz) + { + return math::CPT_RANGE::result(map, acc, xyz); + } + }; + struct Functor + { + Functor(const InGridType& grid, const MaskGridType* mask, + bool threaded, bool worldspace, InterruptT* interrupt) + : mThreaded(threaded) + , mWorldSpace(worldspace) + , mInputGrid(grid) + , mInterrupt(interrupt) + , mMask(mask) + {} + + template + void operator()(const MapT& map) + { + if (mWorldSpace) { + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt, /*densify=*/false); + mOutputGrid = op.process(mThreaded); // cache the result + } else { + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt, /*densify=*/false); + mOutputGrid = op.process(mThreaded); // cache the result + } + } + const bool mThreaded; + const bool mWorldSpace; + const InGridType& mInputGrid; + typename OutGridType::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; + const InGridType& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Cpt class + + +//////////////////////////////////////// + + +/// @brief Compute the curl of a vector grid. +template< + typename GridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Curl +{ +public: + typedef GridT InGridType; + typedef GridT OutGridType; + + Curl(const GridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Curl(const GridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename GridT::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (functor.mOutputGrid) functor.mOutputGrid->setVectorType(VEC_COVARIANT); + return functor.mOutputGrid; + } + +private: + struct Functor + { + Functor(const GridT& grid, const MaskGridType* mask, + bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + typedef math::Curl OpT; + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const GridT& mInputGrid; + typename GridT::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const GridT& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Curl class + + +//////////////////////////////////////// + + +/// @brief Compute the divergence of a vector grid. +template< + typename InGridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Divergence +{ +public: + typedef InGridT InGridType; + typedef typename VectorToScalarConverter::Type OutGridType; + + Divergence(const InGridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Divergence(const InGridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename OutGridType::Ptr process(bool threaded = true) + { + if (mInputGrid.getGridClass() == GRID_STAGGERED) { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + return functor.mOutputGrid; + } else { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + return functor.mOutputGrid; + } + } + +protected: + template + struct Functor + { + Functor(const InGridT& grid, const MaskGridType* mask, + bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + typedef math::Divergence OpT; + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const InGridType& mInputGrid; + typename OutGridType::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const InGridType& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Divergence class + + +//////////////////////////////////////// + + +/// @brief Compute the gradient of a scalar grid. +template< + typename InGridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Gradient +{ +public: + typedef InGridT InGridType; + typedef typename ScalarToVectorConverter::Type OutGridType; + + Gradient(const InGridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Gradient(const InGridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename OutGridType::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (functor.mOutputGrid) functor.mOutputGrid->setVectorType(VEC_COVARIANT); + return functor.mOutputGrid; + } + +protected: + struct Functor + { + Functor(const InGridT& grid, const MaskGridType* mask, + bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + typedef math::Gradient OpT; + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const InGridT& mInputGrid; + typename OutGridType::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const InGridT& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Gradient class + + +//////////////////////////////////////// + + +template< + typename GridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Laplacian +{ +public: + typedef GridT InGridType; + typedef GridT OutGridType; + + Laplacian(const GridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Laplacian(const GridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename GridT::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (functor.mOutputGrid) functor.mOutputGrid->setVectorType(VEC_COVARIANT); + return functor.mOutputGrid; + } + +protected: + struct Functor + { + Functor(const GridT& grid, const MaskGridType* mask, bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + typedef math::Laplacian OpT; + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const GridT& mInputGrid; + typename GridT::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const GridT& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Laplacian class + + +//////////////////////////////////////// + + +template< + typename GridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class MeanCurvature +{ +public: + typedef GridT InGridType; + typedef GridT OutGridType; + + MeanCurvature(const GridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + MeanCurvature(const GridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename GridT::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (functor.mOutputGrid) functor.mOutputGrid->setVectorType(VEC_COVARIANT); + return functor.mOutputGrid; + } + +protected: + struct Functor + { + Functor(const GridT& grid, const MaskGridType* mask, bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + typedef math::MeanCurvature OpT; + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const GridT& mInputGrid; + typename GridT::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const GridT& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of MeanCurvature class + + +//////////////////////////////////////// + + +template< + typename InGridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Magnitude +{ +public: + typedef InGridT InGridType; + typedef typename VectorToScalarConverter::Type OutGridType; + + Magnitude(const InGridType& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Magnitude(const InGridType& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename OutGridType::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + return functor.mOutputGrid; + } + +protected: + struct OpT + { + template + static typename OutGridType::ValueType + result(const MapT&, const AccT& acc, const Coord& xyz) { return acc.getValue(xyz).length();} + }; + struct Functor + { + Functor(const InGridT& grid, const MaskGridType* mask, + bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt, /*densify=*/false); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const InGridType& mInputGrid; + typename OutGridType::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const InGridType& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Magnitude class + + +//////////////////////////////////////// + + +template< + typename GridT, + typename MaskGridType = typename gridop::ToMaskGrid::Type, + typename InterruptT = util::NullInterrupter> +class Normalize +{ +public: + typedef GridT InGridType; + typedef GridT OutGridType; + + Normalize(const GridT& grid, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(nullptr) + { + } + + Normalize(const GridT& grid, const MaskGridType& mask, InterruptT* interrupt = nullptr): + mInputGrid(grid), mInterrupt(interrupt), mMask(&mask) + { + } + + typename GridT::Ptr process(bool threaded = true) + { + Functor functor(mInputGrid, mMask, threaded, mInterrupt); + processTypedMap(mInputGrid.transform(), functor); + if (typename GridT::Ptr outGrid = functor.mOutputGrid) { + const VecType vecType = mInputGrid.getVectorType(); + if (vecType == VEC_COVARIANT) { + outGrid->setVectorType(VEC_COVARIANT_NORMALIZE); + } else { + outGrid->setVectorType(vecType); + } + } + return functor.mOutputGrid; + } + +protected: + struct OpT + { + template + static typename OutGridType::ValueType + result(const MapT&, const AccT& acc, const Coord& xyz) + { + typename OutGridType::ValueType vec = acc.getValue(xyz); + if ( !vec.normalize() ) vec.setZero(); + return vec; + } + }; + struct Functor + { + Functor(const GridT& grid, const MaskGridType* mask, bool threaded, InterruptT* interrupt): + mThreaded(threaded), mInputGrid(grid), mInterrupt(interrupt), mMask(mask) {} + + template + void operator()(const MapT& map) + { + gridop::GridOperator + op(mInputGrid, mMask, map, mInterrupt, /*densify=*/false); + mOutputGrid = op.process(mThreaded); // cache the result + } + + const bool mThreaded; + const GridT& mInputGrid; + typename GridT::Ptr mOutputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; + }; // Private Functor + + const GridT& mInputGrid; + InterruptT* mInterrupt; + const MaskGridType* mMask; +}; // end of Normalize class + + +//////////////////////////////////////// + + +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Cpt::Type, InterruptT> op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename ScalarToVectorConverter::Type::Ptr +cpt(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Cpt op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +curl(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Curl::Type, InterruptT> op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +curl(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Curl op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Divergence::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +divergence(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Divergence op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Gradient::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename ScalarToVectorConverter::Type::Ptr +gradient(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Gradient op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +laplacian(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Laplacian::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +laplacian(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Laplacian op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + MeanCurvature::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +meanCurvature(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + MeanCurvature op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Magnitude::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename VectorToScalarConverter::Type::Ptr +magnitude(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Magnitude op(grid, mask, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +normalize(const GridType& grid, bool threaded, InterruptT* interrupt) +{ + Normalize::Type, InterruptT> + op(grid, interrupt); + return op.process(threaded); +} + +template inline +typename GridType::Ptr +normalize(const GridType& grid, const MaskT& mask, bool threaded, InterruptT* interrupt) +{ + Normalize op(grid, mask, interrupt); + return op.process(threaded); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_GRID_OPERATORS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/GridTransformer.h b/openvdb/tools/GridTransformer.h new file mode 100644 index 00000000..cf49b262 --- /dev/null +++ b/openvdb/tools/GridTransformer.h @@ -0,0 +1,1016 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file GridTransformer.h +/// @author Peter Cucka + +#ifndef OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED + +#include +#include +#include // for isApproxEqual() +#include +#include "ChangeBackground.h" +#include "Interpolation.h" +#include "LevelSetRebuild.h" // for doLevelSetRebuild() +#include "SignedFloodFill.h" // for signedFloodFill +#include "Prune.h" // for pruneLevelSet +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Resample an input grid into an output grid of the same type such that, +/// after resampling, the input and output grids coincide (apart from sampling +/// artifacts), but the output grid's transform is unchanged. +/// @details Specifically, this function resamples the input grid into the output +/// grid's index space, using a sampling kernel like PointSampler, BoxSampler, +/// or QuadraticSampler. +/// @param inGrid the grid to be resampled +/// @param outGrid the grid into which to write the resampled voxel data +/// @param interrupter an object adhering to the util::NullInterrupter interface +/// @par Example: +/// @code +/// // Create an input grid with the default identity transform +/// // and populate it with a level-set sphere. +/// FloatGrid::ConstPtr src = tools::makeSphere(...); +/// // Create an output grid and give it a uniform-scale transform. +/// FloatGrid::Ptr dest = FloatGrid::create(); +/// const float voxelSize = 0.5; +/// dest->setTransform(math::Transform::createLinearTransform(voxelSize)); +/// // Resample the input grid into the output grid, reproducing +/// // the level-set sphere at a smaller voxel size. +/// MyInterrupter interrupter = ...; +/// tools::resampleToMatch(*src, *dest, interrupter); +/// @endcode +template +inline void +resampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter); + +/// @brief Resample an input grid into an output grid of the same type such that, +/// after resampling, the input and output grids coincide (apart from sampling +/// artifacts), but the output grid's transform is unchanged. +/// @details Specifically, this function resamples the input grid into the output +/// grid's index space, using a sampling kernel like PointSampler, BoxSampler, +/// or QuadraticSampler. +/// @param inGrid the grid to be resampled +/// @param outGrid the grid into which to write the resampled voxel data +/// @par Example: +/// @code +/// // Create an input grid with the default identity transform +/// // and populate it with a level-set sphere. +/// FloatGrid::ConstPtr src = tools::makeSphere(...); +/// // Create an output grid and give it a uniform-scale transform. +/// FloatGrid::Ptr dest = FloatGrid::create(); +/// const float voxelSize = 0.5; +/// dest->setTransform(math::Transform::createLinearTransform(voxelSize)); +/// // Resample the input grid into the output grid, reproducing +/// // the level-set sphere at a smaller voxel size. +/// tools::resampleToMatch(*src, *dest); +/// @endcode +template +inline void +resampleToMatch(const GridType& inGrid, GridType& outGrid); + + +//////////////////////////////////////// + + +namespace internal { + +/// @brief A TileSampler wraps a grid sampler of another type (BoxSampler, +/// QuadraticSampler, etc.), and for samples that fall within a given tile +/// of the grid, it returns a cached tile value instead of accessing the grid. +template +class TileSampler: public Sampler +{ +public: + using ValueT = typename TreeT::ValueType; + + /// @param b the index-space bounding box of a particular grid tile + /// @param tileVal the tile's value + /// @param on the tile's active state + TileSampler(const CoordBBox& b, const ValueT& tileVal, bool on): + mBBox(b.min().asVec3d(), b.max().asVec3d()), mVal(tileVal), mActive(on), mEmpty(false) + { + mBBox.expand(-this->radius()); // shrink the bounding box by the sample radius + mEmpty = mBBox.empty(); + } + + bool sample(const TreeT& inTree, const Vec3R& inCoord, ValueT& result) const + { + if (!mEmpty && mBBox.isInside(inCoord)) { result = mVal; return mActive; } + return Sampler::sample(inTree, inCoord, result); + } + +protected: + BBoxd mBBox; + ValueT mVal; + bool mActive, mEmpty; +}; + + +/// @brief For point sampling, tree traversal is less expensive than testing +/// bounding box membership. +template +class TileSampler: public PointSampler { +public: + TileSampler(const CoordBBox&, const typename TreeT::ValueType&, bool) {} +}; + +/// @brief For point sampling, tree traversal is less expensive than testing +/// bounding box membership. +template +class TileSampler: public StaggeredPointSampler { +public: + TileSampler(const CoordBBox&, const typename TreeT::ValueType&, bool) {} +}; + +} // namespace internal + + +//////////////////////////////////////// + + +/// A GridResampler applies a geometric transformation to an +/// input grid using one of several sampling schemes, and stores +/// the result in an output grid. +/// +/// Usage: +/// @code +/// GridResampler resampler(); +/// resampler.transformGrid(xform, inGrid, outGrid); +/// @endcode +/// where @c xform is a functor that implements the following methods: +/// @code +/// bool isAffine() const +/// openvdb::Vec3d transform(const openvdb::Vec3d&) const +/// openvdb::Vec3d invTransform(const openvdb::Vec3d&) const +/// @endcode +/// @note When the transform is affine and can be expressed as a 4 x 4 matrix, +/// a GridTransformer is much more efficient than a GridResampler. +class GridResampler +{ +public: + using Ptr = SharedPtr; + using InterruptFunc = std::function; + + GridResampler(): mThreaded(true), mTransformTiles(true) {} + virtual ~GridResampler() {} + + GridResampler(const GridResampler&) = default; + GridResampler& operator=(const GridResampler&) = default; + + /// Enable or disable threading. (Threading is enabled by default.) + void setThreaded(bool b) { mThreaded = b; } + /// Return @c true if threading is enabled. + bool threaded() const { return mThreaded; } + /// Enable or disable processing of tiles. (Enabled by default, except for level set grids.) + void setTransformTiles(bool b) { mTransformTiles = b; } + /// Return @c true if tile processing is enabled. + bool transformTiles() const { return mTransformTiles; } + + /// @brief Allow processing to be aborted by providing an interrupter object. + /// The interrupter will be queried periodically during processing. + /// @see util/NullInterrupter.h for interrupter interface requirements. + template void setInterrupter(InterrupterType&); + + template + void transformGrid(const Transformer&, + const GridT& inGrid, GridT& outGrid) const; + +protected: + template + void applyTransform(const Transformer&, const GridT& inGrid, GridT& outGrid) const; + + bool interrupt() const { return mInterrupt && mInterrupt(); } + +private: + template + static void transformBBox(const Transformer&, const CoordBBox& inBBox, + const InTreeT& inTree, OutTreeT& outTree, const InterruptFunc&, + const Sampler& = Sampler()); + + template + class RangeProcessor; + + bool mThreaded, mTransformTiles; + InterruptFunc mInterrupt; +}; + + +//////////////////////////////////////// + + +/// @brief A GridTransformer applies a geometric transformation to an +/// input grid using one of several sampling schemes, and stores +/// the result in an output grid. +/// +/// @note GridTransformer is optimized for affine transformations. +/// +/// Usage: +/// @code +/// Mat4R xform = ...; +/// GridTransformer transformer(xform); +/// transformer.transformGrid(inGrid, outGrid); +/// @endcode +/// or +/// @code +/// Vec3R pivot = ..., scale = ..., rotate = ..., translate = ...; +/// GridTransformer transformer(pivot, scale, rotate, translate); +/// transformer.transformGrid(inGrid, outGrid); +/// @endcode +class GridTransformer: public GridResampler +{ +public: + using Ptr = SharedPtr; + + GridTransformer(const Mat4R& xform); + GridTransformer( + const Vec3R& pivot, + const Vec3R& scale, + const Vec3R& rotate, + const Vec3R& translate, + const std::string& xformOrder = "tsr", + const std::string& rotationOrder = "zyx"); + ~GridTransformer() override = default; + + GridTransformer(const GridTransformer&) = default; + GridTransformer& operator=(const GridTransformer&) = default; + + const Mat4R& getTransform() const { return mTransform; } + + template + void transformGrid(const GridT& inGrid, GridT& outGrid) const; + +private: + struct MatrixTransform; + + inline void init(const Vec3R& pivot, const Vec3R& scale, + const Vec3R& rotate, const Vec3R& translate, + const std::string& xformOrder, const std::string& rotOrder); + + Vec3R mPivot; + Vec3i mMipLevels; + Mat4R mTransform, mPreScaleTransform, mPostScaleTransform; +}; + + +//////////////////////////////////////// + + +namespace local_util { + +/// @brief Decompose an affine transform into scale, rotation and translation components. +/// @return @c false if the given matrix is not affine or cannot otherwise be decomposed. +template +inline bool +decompose(const math::Mat4& m, math::Vec3& scale, + math::Vec3& rotate, math::Vec3& translate) +{ + if (!math::isAffine(m)) return false; + + // This is the translation in world space + translate = m.getTranslation(); + // Extract translation. + const math::Mat3 xform = m.getMat3(); + + const math::Vec3 unsignedScale( + (math::Vec3(1, 0, 0) * xform).length(), + (math::Vec3(0, 1, 0) * xform).length(), + (math::Vec3(0, 0, 1) * xform).length()); + + const bool hasUniformScale = unsignedScale.eq(math::Vec3(unsignedScale[0])); + + bool hasRotation = false; + bool validDecomposition = false; + + T minAngle = std::numeric_limits::max(); + + // If the transformation matrix contains a reflection, + // test different negative scales to find a decomposition + // that favors the optimal resampling algorithm. + for (size_t n = 0; n < 8; ++n) { + + const math::Vec3 signedScale( + n & 0x1 ? -unsignedScale.x() : unsignedScale.x(), + n & 0x2 ? -unsignedScale.y() : unsignedScale.y(), + n & 0x4 ? -unsignedScale.z() : unsignedScale.z()); + + // Extract scale and potentially reflection. + const math::Mat3 mat = xform * math::scale >(signedScale).inverse(); + if (mat.det() < T(0.0)) continue; // Skip if mat contains a reflection. + + const math::Vec3 tmpAngle = math::eulerAngles(mat, math::XYZ_ROTATION); + + const math::Mat3 rebuild = + math::rotation >(math::Vec3(1, 0, 0), tmpAngle.x()) * + math::rotation >(math::Vec3(0, 1, 0), tmpAngle.y()) * + math::rotation >(math::Vec3(0, 0, 1), tmpAngle.z()) * + math::scale >(signedScale); + + if (xform.eq(rebuild)) { + + const T maxAngle = std::max(std::abs(tmpAngle[0]), + std::max(std::abs(tmpAngle[1]), std::abs(tmpAngle[2]))); + + if (!(minAngle < maxAngle)) { // Update if less or equal. + + minAngle = maxAngle; + rotate = tmpAngle; + scale = signedScale; + + hasRotation = !rotate.eq(math::Vec3::zero()); + validDecomposition = true; + + if (hasUniformScale || !hasRotation) { + // Current decomposition is optimal. + break; + } + } + } + } + + if (!validDecomposition || (hasRotation && !hasUniformScale)) { + // The decomposition is invalid if the transformation matrix contains shear. + // No unique decomposition if scale is nonuniform and rotation is nonzero. + return false; + } + + return true; +} + +} // namespace local_util + + +//////////////////////////////////////// + + +/// This class implements the Transformer functor interface (specifically, +/// the isAffine(), transform() and invTransform() methods) for a transform +/// that is expressed as a 4 x 4 matrix. +struct GridTransformer::MatrixTransform +{ + MatrixTransform(): mat(Mat4R::identity()), invMat(Mat4R::identity()) {} + MatrixTransform(const Mat4R& xform): mat(xform), invMat(xform.inverse()) {} + + bool isAffine() const { return math::isAffine(mat); } + + Vec3R transform(const Vec3R& pos) const { return mat.transformH(pos); } + + Vec3R invTransform(const Vec3R& pos) const { return invMat.transformH(pos); } + + Mat4R mat, invMat; +}; + + +//////////////////////////////////////// + + +/// @brief This class implements the Transformer functor interface (specifically, +/// the isAffine(), transform() and invTransform() methods) for a transform +/// that maps an A grid into a B grid's index space such that, after resampling, +/// A's index space and transform match B's index space and transform. +class ABTransform +{ +public: + /// @param aXform the A grid's transform + /// @param bXform the B grid's transform + ABTransform(const math::Transform& aXform, const math::Transform& bXform): + mAXform(aXform), + mBXform(bXform), + mIsAffine(mAXform.isLinear() && mBXform.isLinear()), + mIsIdentity(mIsAffine && mAXform == mBXform) + {} + + bool isAffine() const { return mIsAffine; } + + bool isIdentity() const { return mIsIdentity; } + + openvdb::Vec3R transform(const openvdb::Vec3R& pos) const + { + return mBXform.worldToIndex(mAXform.indexToWorld(pos)); + } + + openvdb::Vec3R invTransform(const openvdb::Vec3R& pos) const + { + return mAXform.worldToIndex(mBXform.indexToWorld(pos)); + } + + const math::Transform& getA() const { return mAXform; } + const math::Transform& getB() const { return mBXform; } + +private: + const math::Transform &mAXform, &mBXform; + const bool mIsAffine; + const bool mIsIdentity; +}; + + +/// The normal entry points for resampling are the resampleToMatch() functions, +/// which correctly handle level set grids under scaling and shearing. +/// doResampleToMatch() is mainly for internal use but is typically faster +/// for level sets, and correct provided that no scaling or shearing is needed. +/// +/// @warning Do not use this function to scale or shear a level set grid. +template +inline void +doResampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter) +{ + ABTransform xform(inGrid.transform(), outGrid.transform()); + + if (Sampler::consistent() && xform.isIdentity()) { + // If the transforms of the input and output are identical, the + // output tree is simply a deep copy of the input tree. + outGrid.setTree(inGrid.tree().copy()); + } else if (xform.isAffine()) { + // If the input and output transforms are both affine, create an + // input to output transform (in:index-to-world * out:world-to-index) + // and use the fast GridTransformer API. + Mat4R mat = xform.getA().baseMap()->getAffineMap()->getMat4() * + ( xform.getB().baseMap()->getAffineMap()->getMat4().inverse() ); + + GridTransformer transformer(mat); + transformer.setInterrupter(interrupter); + + // Transform the input grid and store the result in the output grid. + transformer.transformGrid(inGrid, outGrid); + } else { + // If either the input or the output transform is non-affine, + // use the slower GridResampler API. + GridResampler resampler; + resampler.setInterrupter(interrupter); + + resampler.transformGrid(xform, inGrid, outGrid); + } +} + + +template +inline void +resampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter) +{ + if (inGrid.getGridClass() == GRID_LEVEL_SET) { + // If the input grid is a level set, resample it using the level set rebuild tool. + + if (inGrid.constTransform() == outGrid.constTransform()) { + // If the transforms of the input and output grids are identical, + // the output tree is simply a deep copy of the input tree. + outGrid.setTree(inGrid.tree().copy()); + return; + } + + // If the output grid is a level set, resample the input grid to have the output grid's + // background value. Otherwise, preserve the input grid's background value. + using ValueT = typename GridType::ValueType; + const bool outIsLevelSet = outGrid.getGridClass() == openvdb::GRID_LEVEL_SET; + + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueT halfWidth = outIsLevelSet + ? ValueT(outGrid.background() * (1.0 / outGrid.voxelSize()[0])) + : ValueT(inGrid.background() * (1.0 / inGrid.voxelSize()[0])); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + + typename GridType::Ptr tempGrid; + try { + tempGrid = doLevelSetRebuild(inGrid, /*iso=*/zeroVal(), + /*exWidth=*/halfWidth, /*inWidth=*/halfWidth, + &outGrid.constTransform(), &interrupter); + } catch (TypeError&) { + // The input grid is classified as a level set, but it has a value type + // that is not supported by the level set rebuild tool. Fall back to + // using the generic resampler. + tempGrid.reset(); + } + if (tempGrid) { + outGrid.setTree(tempGrid->treePtr()); + return; + } + } + + // If the input grid is not a level set, use the generic resampler. + doResampleToMatch(inGrid, outGrid, interrupter); +} + + +template +inline void +resampleToMatch(const GridType& inGrid, GridType& outGrid) +{ + util::NullInterrupter interrupter; + resampleToMatch(inGrid, outGrid, interrupter); +} + + +//////////////////////////////////////// + + +inline +GridTransformer::GridTransformer(const Mat4R& xform): + mPivot(0, 0, 0), + mMipLevels(0, 0, 0), + mTransform(xform), + mPreScaleTransform(Mat4R::identity()), + mPostScaleTransform(Mat4R::identity()) +{ + Vec3R scale, rotate, translate; + if (local_util::decompose(mTransform, scale, rotate, translate)) { + // If the transform can be decomposed into affine components, + // use them to set up a mipmapping-like scheme for downsampling. + init(mPivot, scale, rotate, translate, "srt", "zyx"); + } +} + + +inline +GridTransformer::GridTransformer( + const Vec3R& pivot, const Vec3R& scale, + const Vec3R& rotate, const Vec3R& translate, + const std::string& xformOrder, const std::string& rotOrder): + mPivot(0, 0, 0), + mMipLevels(0, 0, 0), + mPreScaleTransform(Mat4R::identity()), + mPostScaleTransform(Mat4R::identity()) +{ + init(pivot, scale, rotate, translate, xformOrder, rotOrder); +} + + +//////////////////////////////////////// + + +inline void +GridTransformer::init( + const Vec3R& pivot, const Vec3R& scale, + const Vec3R& rotate, const Vec3R& translate, + const std::string& xformOrder, const std::string& rotOrder) +{ + if (xformOrder.size() != 3) { + OPENVDB_THROW(ValueError, "invalid transform order (" + xformOrder + ")"); + } + if (rotOrder.size() != 3) { + OPENVDB_THROW(ValueError, "invalid rotation order (" + rotOrder + ")"); + } + + mPivot = pivot; + + // Scaling is handled via a mipmapping-like scheme of successive + // halvings of the tree resolution, until the remaining scale + // factor is greater than or equal to 1/2. + Vec3R scaleRemainder = scale; + for (int i = 0; i < 3; ++i) { + double s = std::fabs(scale(i)); + if (s < 0.5) { + mMipLevels(i) = int(std::floor(-std::log(s)/std::log(2.0))); + scaleRemainder(i) = scale(i) * (1 << mMipLevels(i)); + } + } + + // Build pre-scale and post-scale transform matrices based on + // the user-specified order of operations. + // Note that we iterate over the transform order string in reverse order + // (e.g., "t", "r", "s", given "srt"). This is because math::Mat matrices + // postmultiply row vectors rather than premultiplying column vectors. + mTransform = mPreScaleTransform = mPostScaleTransform = Mat4R::identity(); + Mat4R* remainder = &mPostScaleTransform; + int rpos, spos, tpos; + rpos = spos = tpos = 3; + for (int ix = 2; ix >= 0; --ix) { // reverse iteration + switch (xformOrder[ix]) { + + case 'r': + rpos = ix; + mTransform.preTranslate(pivot); + remainder->preTranslate(pivot); + + int xpos, ypos, zpos; + xpos = ypos = zpos = 3; + for (int ir = 2; ir >= 0; --ir) { + switch (rotOrder[ir]) { + case 'x': + xpos = ir; + mTransform.preRotate(math::X_AXIS, rotate.x()); + remainder->preRotate(math::X_AXIS, rotate.x()); + break; + case 'y': + ypos = ir; + mTransform.preRotate(math::Y_AXIS, rotate.y()); + remainder->preRotate(math::Y_AXIS, rotate.y()); + break; + case 'z': + zpos = ir; + mTransform.preRotate(math::Z_AXIS, rotate.z()); + remainder->preRotate(math::Z_AXIS, rotate.z()); + break; + } + } + // Reject rotation order strings that don't contain exactly one + // instance of "x", "y" and "z". + if (xpos > 2 || ypos > 2 || zpos > 2) { + OPENVDB_THROW(ValueError, "invalid rotation order (" + rotOrder + ")"); + } + + mTransform.preTranslate(-pivot); + remainder->preTranslate(-pivot); + break; + + case 's': + spos = ix; + mTransform.preTranslate(pivot); + mTransform.preScale(scale); + mTransform.preTranslate(-pivot); + + remainder->preTranslate(pivot); + remainder->preScale(scaleRemainder); + remainder->preTranslate(-pivot); + remainder = &mPreScaleTransform; + break; + + case 't': + tpos = ix; + mTransform.preTranslate(translate); + remainder->preTranslate(translate); + break; + } + } + // Reject transform order strings that don't contain exactly one + // instance of "t", "r" and "s". + if (tpos > 2 || rpos > 2 || spos > 2) { + OPENVDB_THROW(ValueError, "invalid transform order (" + xformOrder + ")"); + } +} + + +//////////////////////////////////////// + + +template +void +GridResampler::setInterrupter(InterrupterType& interrupter) +{ + mInterrupt = std::bind(&InterrupterType::wasInterrupted, + /*this=*/&interrupter, /*percent=*/-1); +} + + +template +void +GridResampler::transformGrid(const Transformer& xform, + const GridT& inGrid, GridT& outGrid) const +{ + tools::changeBackground(outGrid.tree(), inGrid.background()); + applyTransform(xform, inGrid, outGrid); +} + + +template +void +GridTransformer::transformGrid(const GridT& inGrid, GridT& outGrid) const +{ + tools::changeBackground(outGrid.tree(), inGrid.background()); + + if (!Sampler::mipmap() || mMipLevels == Vec3i::zero()) { + // Skip the mipmapping step. + const MatrixTransform xform(mTransform); + applyTransform(xform, inGrid, outGrid); + + } else { + bool firstPass = true; + const typename GridT::ValueType background = inGrid.background(); + typename GridT::Ptr tempGrid = GridT::create(background); + + if (!mPreScaleTransform.eq(Mat4R::identity())) { + firstPass = false; + // Apply the pre-scale transform to the input grid + // and store the result in a temporary grid. + const MatrixTransform xform(mPreScaleTransform); + applyTransform(xform, inGrid, *tempGrid); + } + + // While the scale factor along one or more axes is less than 1/2, + // scale the grid by half along those axes. + Vec3i count = mMipLevels; // # of halvings remaining per axis + while (count != Vec3i::zero()) { + MatrixTransform xform; + xform.mat.setTranslation(mPivot); + xform.mat.preScale(Vec3R( + count.x() ? .5 : 1, count.y() ? .5 : 1, count.z() ? .5 : 1)); + xform.mat.preTranslate(-mPivot); + xform.invMat = xform.mat.inverse(); + + if (firstPass) { + firstPass = false; + // Scale the input grid and store the result in a temporary grid. + applyTransform(xform, inGrid, *tempGrid); + } else { + // Scale the temporary grid and store the result in a transient grid, + // then swap the two and discard the transient grid. + typename GridT::Ptr destGrid = GridT::create(background); + applyTransform(xform, *tempGrid, *destGrid); + tempGrid.swap(destGrid); + } + // (3, 2, 1) -> (2, 1, 0) -> (1, 0, 0) -> (0, 0, 0), etc. + count = math::maxComponent(count - 1, Vec3i::zero()); + } + + // Apply the post-scale transform and store the result in the output grid. + if (!mPostScaleTransform.eq(Mat4R::identity())) { + const MatrixTransform xform(mPostScaleTransform); + applyTransform(xform, *tempGrid, outGrid); + } else { + outGrid.setTree(tempGrid->treePtr()); + } + } +} + + +//////////////////////////////////////// + + +template +class GridResampler::RangeProcessor +{ +public: + using LeafIterT = typename TreeT::LeafCIter; + using TileIterT = typename TreeT::ValueAllCIter; + using LeafRange = typename tree::IteratorRange; + using TileRange = typename tree::IteratorRange; + using InTreeAccessor = typename tree::ValueAccessor; + using OutTreeAccessor = typename tree::ValueAccessor; + + RangeProcessor(const Transformer& xform, const CoordBBox& b, const TreeT& inT, TreeT& outT): + mIsRoot(true), mXform(xform), mBBox(b), + mInTree(inT), mOutTree(&outT), mInAcc(mInTree), mOutAcc(*mOutTree) + {} + + RangeProcessor(const Transformer& xform, const CoordBBox& b, const TreeT& inTree): + mIsRoot(false), mXform(xform), mBBox(b), + mInTree(inTree), mOutTree(new TreeT(inTree.background())), + mInAcc(mInTree), mOutAcc(*mOutTree) + {} + + ~RangeProcessor() { if (!mIsRoot) delete mOutTree; } + + /// Splitting constructor: don't copy the original processor's output tree + RangeProcessor(RangeProcessor& other, tbb::split): + mIsRoot(false), + mXform(other.mXform), + mBBox(other.mBBox), + mInTree(other.mInTree), + mOutTree(new TreeT(mInTree.background())), + mInAcc(mInTree), + mOutAcc(*mOutTree), + mInterrupt(other.mInterrupt) + {} + + void setInterrupt(const InterruptFunc& f) { mInterrupt = f; } + + /// Transform each leaf node in the given range. + void operator()(LeafRange& r) + { + for ( ; r; ++r) { + if (interrupt()) break; + LeafIterT i = r.iterator(); + CoordBBox bbox(i->origin(), i->origin() + Coord(i->dim())); + if (!mBBox.empty()) { + // Intersect the leaf node's bounding box with mBBox. + bbox = CoordBBox( + Coord::maxComponent(bbox.min(), mBBox.min()), + Coord::minComponent(bbox.max(), mBBox.max())); + } + if (!bbox.empty()) { + transformBBox(mXform, bbox, mInAcc, mOutAcc, mInterrupt); + } + } + } + + /// Transform each non-background tile in the given range. + void operator()(TileRange& r) + { + for ( ; r; ++r) { + if (interrupt()) break; + + TileIterT i = r.iterator(); + // Skip voxels and background tiles. + if (!i.isTileValue()) continue; + if (!i.isValueOn() && math::isApproxEqual(*i, mOutTree->background())) continue; + + CoordBBox bbox; + i.getBoundingBox(bbox); + if (!mBBox.empty()) { + // Intersect the tile's bounding box with mBBox. + bbox = CoordBBox( + Coord::maxComponent(bbox.min(), mBBox.min()), + Coord::minComponent(bbox.max(), mBBox.max())); + } + if (!bbox.empty()) { + /// @todo This samples the tile voxel-by-voxel, which is much too slow. + /// Instead, compute the largest axis-aligned bounding box that is + /// contained in the transformed tile (adjusted for the sampler radius) + /// and fill it with the tile value. Then transform the remaining voxels. + internal::TileSampler + sampler(bbox, i.getValue(), i.isValueOn()); + transformBBox(mXform, bbox, mInAcc, mOutAcc, mInterrupt, sampler); + } + } + } + + /// Merge another processor's output tree into this processor's tree. + void join(RangeProcessor& other) + { + if (!interrupt()) mOutTree->merge(*other.mOutTree); + } + +private: + bool interrupt() const { return mInterrupt && mInterrupt(); } + + const bool mIsRoot; // true if mOutTree is the top-level tree + Transformer mXform; + CoordBBox mBBox; + const TreeT& mInTree; + TreeT* mOutTree; + InTreeAccessor mInAcc; + OutTreeAccessor mOutAcc; + InterruptFunc mInterrupt; +}; + + +//////////////////////////////////////// + + +template +void +GridResampler::applyTransform(const Transformer& xform, + const GridT& inGrid, GridT& outGrid) const +{ + using TreeT = typename GridT::TreeType; + const TreeT& inTree = inGrid.tree(); + TreeT& outTree = outGrid.tree(); + + using RangeProc = RangeProcessor; + + const GridClass gridClass = inGrid.getGridClass(); + + if (gridClass != GRID_LEVEL_SET && mTransformTiles) { + // Independently transform the tiles of the input grid. + // Note: Tiles in level sets can only be background tiles, and they + // are handled more efficiently with a signed flood fill (see below). + + RangeProc proc(xform, CoordBBox(), inTree, outTree); + proc.setInterrupt(mInterrupt); + + typename RangeProc::TileIterT tileIter = inTree.cbeginValueAll(); + tileIter.setMaxDepth(tileIter.getLeafDepth() - 1); // skip leaf nodes + typename RangeProc::TileRange tileRange(tileIter); + + if (mThreaded) { + tbb::parallel_reduce(tileRange, proc); + } else { + proc(tileRange); + } + } + + CoordBBox clipBBox; + if (gridClass == GRID_LEVEL_SET) { + // Inactive voxels in level sets can only be background voxels, and they + // are handled more efficiently with a signed flood fill (see below). + clipBBox = inGrid.evalActiveVoxelBoundingBox(); + } + + // Independently transform the leaf nodes of the input grid. + + RangeProc proc(xform, clipBBox, inTree, outTree); + proc.setInterrupt(mInterrupt); + + typename RangeProc::LeafRange leafRange(inTree.cbeginLeaf()); + + if (mThreaded) { + tbb::parallel_reduce(leafRange, proc); + } else { + proc(leafRange); + } + + // If the grid is a level set, mark inactive voxels as inside or outside. + if (gridClass == GRID_LEVEL_SET) { + tools::pruneLevelSet(outTree); + tools::signedFloodFill(outTree); + } +} + + +//////////////////////////////////////// + + +//static +template +void +GridResampler::transformBBox( + const Transformer& xform, + const CoordBBox& bbox, + const InTreeT& inTree, + OutTreeT& outTree, + const InterruptFunc& interrupt, + const Sampler& sampler) +{ + using ValueT = typename OutTreeT::ValueType; + + // Transform the corners of the input tree's bounding box + // and compute the enclosing bounding box in the output tree. + Vec3R + inRMin(bbox.min().x(), bbox.min().y(), bbox.min().z()), + inRMax(bbox.max().x()+1, bbox.max().y()+1, bbox.max().z()+1), + outRMin = math::minComponent(xform.transform(inRMin), xform.transform(inRMax)), + outRMax = math::maxComponent(xform.transform(inRMin), xform.transform(inRMax)); + for (int i = 0; i < 8; ++i) { + Vec3R corner( + i & 1 ? inRMax.x() : inRMin.x(), + i & 2 ? inRMax.y() : inRMin.y(), + i & 4 ? inRMax.z() : inRMin.z()); + outRMin = math::minComponent(outRMin, xform.transform(corner)); + outRMax = math::maxComponent(outRMax, xform.transform(corner)); + } + Vec3i + outMin = local_util::floorVec3(outRMin) - Sampler::radius(), + outMax = local_util::ceilVec3(outRMax) + Sampler::radius(); + + if (!xform.isAffine()) { + // If the transform is not affine, back-project each output voxel + // into the input tree. + Vec3R xyz, inXYZ; + Coord outXYZ; + int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z(); + for (x = outMin.x(); x <= outMax.x(); ++x) { + if (interrupt && interrupt()) break; + xyz.x() = x; + for (y = outMin.y(); y <= outMax.y(); ++y) { + if (interrupt && interrupt()) break; + xyz.y() = y; + for (z = outMin.z(); z <= outMax.z(); ++z) { + xyz.z() = z; + inXYZ = xform.invTransform(xyz); + ValueT result; + if (sampler.sample(inTree, inXYZ, result)) { + outTree.setValueOn(outXYZ, result); + } else { + // Note: Don't overwrite existing active values with inactive values. + if (!outTree.isValueOn(outXYZ)) { + outTree.setValueOff(outXYZ, result); + } + } + } + } + } + } else { // affine + // Compute step sizes in the input tree that correspond to + // unit steps in x, y and z in the output tree. + const Vec3R + translation = xform.invTransform(Vec3R(0, 0, 0)), + deltaX = xform.invTransform(Vec3R(1, 0, 0)) - translation, + deltaY = xform.invTransform(Vec3R(0, 1, 0)) - translation, + deltaZ = xform.invTransform(Vec3R(0, 0, 1)) - translation; + +#if defined(__ICC) + /// @todo The following line is a workaround for bad code generation + /// in opt-icc11.1_64 (but not debug or gcc) builds. It should be + /// removed once the problem has been addressed at its source. + const Vec3R dummy = deltaX; +#endif + + // Step by whole voxels through the output tree, sampling the + // corresponding fractional voxels of the input tree. + Vec3R inStartX = xform.invTransform(Vec3R(outMin)); + Coord outXYZ; + int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z(); + for (x = outMin.x(); x <= outMax.x(); ++x, inStartX += deltaX) { + if (interrupt && interrupt()) break; + Vec3R inStartY = inStartX; + for (y = outMin.y(); y <= outMax.y(); ++y, inStartY += deltaY) { + if (interrupt && interrupt()) break; + Vec3R inXYZ = inStartY; + for (z = outMin.z(); z <= outMax.z(); ++z, inXYZ += deltaZ) { + ValueT result; + if (sampler.sample(inTree, inXYZ, result)) { + outTree.setValueOn(outXYZ, result); + } else { + // Note: Don't overwrite existing active values with inactive values. + if (!outTree.isValueOn(outXYZ)) { + outTree.setValueOff(outXYZ, result); + } + } + } + } + } + } +} // GridResampler::transformBBox() + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Interpolation.h b/openvdb/tools/Interpolation.h new file mode 100644 index 00000000..989ab196 --- /dev/null +++ b/openvdb/tools/Interpolation.h @@ -0,0 +1,1017 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Interpolation.h +/// +/// Sampler classes such as PointSampler and BoxSampler that are intended for use +/// with tools::GridTransformer should operate in voxel space and must adhere to +/// the interface described in the example below: +/// @code +/// struct MySampler +/// { +/// // Return a short name that can be used to identify this sampler +/// // in error messages and elsewhere. +/// const char* name() { return "mysampler"; } +/// +/// // Return the radius of the sampling kernel in voxels, not including +/// // the center voxel. This is the number of voxels of padding that +/// // are added to all sides of a volume as a result of resampling. +/// int radius() { return 2; } +/// +/// // Return true if scaling by a factor smaller than 0.5 (along any axis) +/// // should be handled via a mipmapping-like scheme of successive halvings +/// // of a grid's resolution, until the remaining scale factor is +/// // greater than or equal to 1/2. Set this to false only when high-quality +/// // scaling is not required. +/// bool mipmap() { return true; } +/// +/// // Specify if sampling at a location that is collocated with a grid point +/// // is guaranteed to return the exact value at that grid point. +/// // For most sampling kernels, this should be false. +/// bool consistent() { return false; } +/// +/// // Sample the tree at the given coordinates and return the result in val. +/// // Return true if the sampled value is active. +/// template +/// bool sample(const TreeT& tree, const Vec3R& coord, typename TreeT::ValueType& val); +/// }; +/// @endcode + +#ifndef OPENVDB_TOOLS_INTERPOLATION_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_INTERPOLATION_HAS_BEEN_INCLUDED + +#include // for OPENVDB_VERSION_NAME +#include // for round() +#include // for SmoothUnitStep +#include // for Transform +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Provises a unified interface for sampling, i.e. interpolation. +/// @details Order = 0: closest point +/// Order = 1: tri-linear +/// Order = 2: tri-quadratic +/// Staggered: Set to true for MAC grids +template +struct Sampler +{ + static_assert(Order < 3, "Samplers of order higher than 2 are not supported"); + static const char* name(); + static int radius(); + static bool mipmap(); + static bool consistent(); + static bool staggered(); + static size_t order(); + + /// @brief Sample @a inTree at the floating-point index coordinate @a inCoord + /// and store the result in @a result. + /// + /// @return @c true if the sampled value is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Sample @a inTree at the floating-point index coordinate @a inCoord. + /// + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); +}; + +//////////////////////////////////////// Non-Staggered Samplers + +// The following samplers operate in voxel space. +// When the samplers are applied to grids holding vector or other non-scalar data, +// the data is assumed to be collocated. For example, using the BoxSampler on a grid +// with ValueType Vec3f assumes that all three elements in a vector can be assigned +// the same physical location. Consider using the GridSampler below instead. + +struct PointSampler +{ + static const char* name() { return "point"; } + static int radius() { return 0; } + static bool mipmap() { return false; } + static bool consistent() { return true; } + static bool staggered() { return false; } + static size_t order() { return 0; } + + /// @brief Sample @a inTree at the nearest neighbor to @a inCoord + /// and store the result in @a result. + /// @return @c true if the sampled value is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Sample @a inTree at the nearest neighbor to @a inCoord + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); +}; + + +struct BoxSampler +{ + static const char* name() { return "box"; } + static int radius() { return 1; } + static bool mipmap() { return true; } + static bool consistent() { return true; } + static bool staggered() { return false; } + static size_t order() { return 1; } + + /// @brief Trilinearly reconstruct @a inTree at @a inCoord + /// and store the result in @a result. + /// @return @c true if any one of the sampled values is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Trilinearly reconstruct @a inTree at @a inCoord. + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); + + /// @brief Import all eight values from @a inTree to support + /// tri-linear interpolation. + template + static inline void getValues(ValueT (&data)[N][N][N], const TreeT& inTree, Coord ijk); + + /// @brief Import all eight values from @a inTree to support + /// tri-linear interpolation. + /// @return @c true if any of the eight values are active + template + static inline bool probeValues(ValueT (&data)[N][N][N], const TreeT& inTree, Coord ijk); + + /// @brief Find the minimum and maximum values of the eight cell + /// values in @ data. + template + static inline void extrema(ValueT (&data)[N][N][N], ValueT& vMin, ValueT& vMax); + + /// @return the tri-linear interpolation with the unit cell coordinates @a uvw + template + static inline ValueT trilinearInterpolation(ValueT (&data)[N][N][N], const Vec3R& uvw); +}; + + +struct QuadraticSampler +{ + static const char* name() { return "quadratic"; } + static int radius() { return 1; } + static bool mipmap() { return true; } + static bool consistent() { return false; } + static bool staggered() { return false; } + static size_t order() { return 2; } + + /// @brief Triquadratically reconstruct @a inTree at @a inCoord + /// and store the result in @a result. + /// @return @c true if any one of the sampled values is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Triquadratically reconstruct @a inTree at to @a inCoord. + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); + + template + static inline ValueT triquadraticInterpolation(ValueT (&data)[N][N][N], const Vec3R& uvw); +}; + + +//////////////////////////////////////// Staggered Samplers + + +// The following samplers operate in voxel space and are designed for Vec3 +// staggered grid data (e.g., fluid simulations using the Marker-and-Cell approach +// associate elements of the velocity vector with different physical locations: +// the faces of a cube). + +struct StaggeredPointSampler +{ + static const char* name() { return "point"; } + static int radius() { return 0; } + static bool mipmap() { return false; } + static bool consistent() { return false; } + static bool staggered() { return true; } + static size_t order() { return 0; } + + /// @brief Sample @a inTree at the nearest neighbor to @a inCoord + /// and store the result in @a result. + /// @return true if the sampled value is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Sample @a inTree at the nearest neighbor to @a inCoord + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); +}; + + +struct StaggeredBoxSampler +{ + static const char* name() { return "box"; } + static int radius() { return 1; } + static bool mipmap() { return true; } + static bool consistent() { return false; } + static bool staggered() { return true; } + static size_t order() { return 1; } + + /// @brief Trilinearly reconstruct @a inTree at @a inCoord + /// and store the result in @a result. + /// @return true if any one of the sampled value is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Trilinearly reconstruct @a inTree at @a inCoord. + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); +}; + + +struct StaggeredQuadraticSampler +{ + static const char* name() { return "quadratic"; } + static int radius() { return 1; } + static bool mipmap() { return true; } + static bool consistent() { return false; } + static bool staggered() { return true; } + static size_t order() { return 2; } + + /// @brief Triquadratically reconstruct @a inTree at @a inCoord + /// and store the result in @a result. + /// @return true if any one of the sampled values is active. + template + static bool sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result); + + /// @brief Triquadratically reconstruct @a inTree at to @a inCoord. + /// @return the reconstructed value + template + static typename TreeT::ValueType sample(const TreeT& inTree, const Vec3R& inCoord); +}; + + +//////////////////////////////////////// GridSampler + + +/// @brief Class that provides the interface for continuous sampling +/// of values in a tree. +/// +/// @details Since trees support only discrete voxel sampling, TreeSampler +/// must be used to sample arbitrary continuous points in (world or +/// index) space. +/// +/// @warning This implementation of the GridSampler stores a pointer +/// to a Tree for value access. While this is thread-safe it is +/// uncached and hence slow compared to using a +/// ValueAccessor. Consequently it is normally advisable to use the +/// template specialization below that employs a +/// ValueAccessor. However, care must be taken when dealing with +/// multi-threading (see warning below). +template +class GridSampler +{ +public: + using Ptr = SharedPtr; + using ValueType = typename GridOrTreeType::ValueType; + using GridType = typename TreeAdapter::GridType; + using TreeType = typename TreeAdapter::TreeType; + using AccessorType = typename TreeAdapter::AccessorType; + + /// @param grid a grid to be sampled + explicit GridSampler(const GridType& grid) + : mTree(&(grid.tree())), mTransform(&(grid.transform())) {} + + /// @param tree a tree to be sampled, or a ValueAccessor for the tree + /// @param transform is used when sampling world space locations. + GridSampler(const TreeType& tree, const math::Transform& transform) + : mTree(&tree), mTransform(&transform) {} + + const math::Transform& transform() const { return *mTransform; } + + /// @brief Sample a point in index space in the grid. + /// @param x Fractional x-coordinate of point in index-coordinates of grid + /// @param y Fractional y-coordinate of point in index-coordinates of grid + /// @param z Fractional z-coordinate of point in index-coordinates of grid + template + ValueType sampleVoxel(const RealType& x, const RealType& y, const RealType& z) const + { + return this->isSample(Vec3d(x,y,z)); + } + + /// @brief Sample value in integer index space + /// @param i Integer x-coordinate in index space + /// @param j Integer y-coordinate in index space + /// @param k Integer x-coordinate in index space + ValueType sampleVoxel(typename Coord::ValueType i, + typename Coord::ValueType j, + typename Coord::ValueType k) const + { + return this->isSample(Coord(i,j,k)); + } + + /// @brief Sample value in integer index space + /// @param ijk the location in index space + ValueType isSample(const Coord& ijk) const { return mTree->getValue(ijk); } + + /// @brief Sample in fractional index space + /// @param ispoint the location in index space + ValueType isSample(const Vec3d& ispoint) const + { + ValueType result = zeroVal(); + SamplerType::sample(*mTree, ispoint, result); + return result; + } + + /// @brief Sample in world space + /// @param wspoint the location in world space + ValueType wsSample(const Vec3d& wspoint) const + { + ValueType result = zeroVal(); + SamplerType::sample(*mTree, mTransform->worldToIndex(wspoint), result); + return result; + } + +private: + const TreeType* mTree; + const math::Transform* mTransform; +}; // class GridSampler + + +/// @brief Specialization of GridSampler for construction from a ValueAccessor type +/// +/// @note This version should normally be favored over the one above +/// that takes a Grid or Tree. The reason is this version uses a +/// ValueAccessor that performs fast (cached) access where the +/// tree-based flavor performs slower (uncached) access. +/// +/// @warning Since this version stores a pointer to an (externally +/// allocated) value accessor it is not threadsafe. Hence each thread +/// should have its own instance of a GridSampler constructed from a +/// local ValueAccessor. Alternatively the Grid/Tree-based GridSampler +/// is threadsafe, but also slower. +template +class GridSampler, SamplerType> +{ +public: + using Ptr = SharedPtr; + using ValueType = typename TreeT::ValueType; + using TreeType = TreeT; + using GridType = Grid; + using AccessorType = typename tree::ValueAccessor; + + /// @param acc a ValueAccessor to be sampled + /// @param transform is used when sampling world space locations. + GridSampler(const AccessorType& acc, + const math::Transform& transform) + : mAccessor(&acc), mTransform(&transform) {} + + const math::Transform& transform() const { return *mTransform; } + + /// @brief Sample a point in index space in the grid. + /// @param x Fractional x-coordinate of point in index-coordinates of grid + /// @param y Fractional y-coordinate of point in index-coordinates of grid + /// @param z Fractional z-coordinate of point in index-coordinates of grid + template + ValueType sampleVoxel(const RealType& x, const RealType& y, const RealType& z) const + { + return this->isSample(Vec3d(x,y,z)); + } + + /// @brief Sample value in integer index space + /// @param i Integer x-coordinate in index space + /// @param j Integer y-coordinate in index space + /// @param k Integer x-coordinate in index space + ValueType sampleVoxel(typename Coord::ValueType i, + typename Coord::ValueType j, + typename Coord::ValueType k) const + { + return this->isSample(Coord(i,j,k)); + } + + /// @brief Sample value in integer index space + /// @param ijk the location in index space + ValueType isSample(const Coord& ijk) const { return mAccessor->getValue(ijk); } + + /// @brief Sample in fractional index space + /// @param ispoint the location in index space + ValueType isSample(const Vec3d& ispoint) const + { + ValueType result = zeroVal(); + SamplerType::sample(*mAccessor, ispoint, result); + return result; + } + + /// @brief Sample in world space + /// @param wspoint the location in world space + ValueType wsSample(const Vec3d& wspoint) const + { + ValueType result = zeroVal(); + SamplerType::sample(*mAccessor, mTransform->worldToIndex(wspoint), result); + return result; + } + +private: + const AccessorType* mAccessor;//not thread-safe! + const math::Transform* mTransform; +};//Specialization of GridSampler + + +//////////////////////////////////////// DualGridSampler + + +/// @brief This is a simple convenience class that allows for sampling +/// from a source grid into the index space of a target grid. At +/// construction the source and target grids are checked for alignment +/// which potentially renders interpolation unnecessary. Else +/// interpolation is performed according to the templated Sampler +/// type. +/// +/// @warning For performance reasons the check for alignment of the +/// two grids is only performed at construction time! +template +class DualGridSampler +{ +public: + using ValueType = typename GridOrTreeT::ValueType; + using GridType = typename TreeAdapter::GridType; + using TreeType = typename TreeAdapter::TreeType; + using AccessorType = typename TreeAdapter::AccessorType; + + /// @brief Grid and transform constructor. + /// @param sourceGrid Source grid. + /// @param targetXform Transform of the target grid. + DualGridSampler(const GridType& sourceGrid, + const math::Transform& targetXform) + : mSourceTree(&(sourceGrid.tree())) + , mSourceXform(&(sourceGrid.transform())) + , mTargetXform(&targetXform) + , mAligned(targetXform == *mSourceXform) + { + } + /// @brief Tree and transform constructor. + /// @param sourceTree Source tree. + /// @param sourceXform Transform of the source grid. + /// @param targetXform Transform of the target grid. + DualGridSampler(const TreeType& sourceTree, + const math::Transform& sourceXform, + const math::Transform& targetXform) + : mSourceTree(&sourceTree) + , mSourceXform(&sourceXform) + , mTargetXform(&targetXform) + , mAligned(targetXform == sourceXform) + { + } + /// @brief Return the value of the source grid at the index + /// coordinates, ijk, relative to the target grid (or its tranform). + inline ValueType operator()(const Coord& ijk) const + { + if (mAligned) return mSourceTree->getValue(ijk); + const Vec3R world = mTargetXform->indexToWorld(ijk); + return SamplerT::sample(*mSourceTree, mSourceXform->worldToIndex(world)); + } + /// @brief Return true if the two grids are aligned. + inline bool isAligned() const { return mAligned; } +private: + const TreeType* mSourceTree; + const math::Transform* mSourceXform; + const math::Transform* mTargetXform; + const bool mAligned; +};// DualGridSampler + +/// @brief Specialization of DualGridSampler for construction from a ValueAccessor type. +template +class DualGridSampler, SamplerT> +{ + public: + using ValueType = typename TreeT::ValueType; + using TreeType = TreeT; + using GridType = Grid; + using AccessorType = typename tree::ValueAccessor; + + /// @brief ValueAccessor and transform constructor. + /// @param sourceAccessor ValueAccessor into the source grid. + /// @param sourceXform Transform for the source grid. + /// @param targetXform Transform for the target grid. + DualGridSampler(const AccessorType& sourceAccessor, + const math::Transform& sourceXform, + const math::Transform& targetXform) + : mSourceAcc(&sourceAccessor) + , mSourceXform(&sourceXform) + , mTargetXform(&targetXform) + , mAligned(targetXform == sourceXform) + { + } + /// @brief Return the value of the source grid at the index + /// coordinates, ijk, relative to the target grid. + inline ValueType operator()(const Coord& ijk) const + { + if (mAligned) return mSourceAcc->getValue(ijk); + const Vec3R world = mTargetXform->indexToWorld(ijk); + return SamplerT::sample(*mSourceAcc, mSourceXform->worldToIndex(world)); + } + /// @brief Return true if the two grids are aligned. + inline bool isAligned() const { return mAligned; } +private: + const AccessorType* mSourceAcc; + const math::Transform* mSourceXform; + const math::Transform* mTargetXform; + const bool mAligned; +};//Specialization of DualGridSampler + +//////////////////////////////////////// AlphaMask + + +// Class to derive the normalized alpha mask +template +class AlphaMask +{ +public: + static_assert(std::is_floating_point::value, + "AlphaMask requires a floating-point value type"); + using GridType = GridT; + using MaskType = MaskT; + using SamlerType = SamplerT; + using FloatType = FloatT; + + AlphaMask(const GridT& grid, const MaskT& mask, FloatT min, FloatT max, bool invert) + : mAcc(mask.tree()) + , mSampler(mAcc, mask.transform() , grid.transform()) + , mMin(min) + , mInvNorm(1/(max-min)) + , mInvert(invert) + { + assert(min < max); + } + + inline bool operator()(const Coord& xyz, FloatT& a, FloatT& b) const + { + a = math::SmoothUnitStep( (mSampler(xyz) - mMin) * mInvNorm );//smooth mapping to 0->1 + b = 1 - a; + if (mInvert) std::swap(a,b); + return a>0; + } + +protected: + using AccT = typename MaskType::ConstAccessor; + AccT mAcc; + tools::DualGridSampler mSampler; + const FloatT mMin, mInvNorm; + const bool mInvert; +};// AlphaMask + +//////////////////////////////////////// + +namespace local_util { + +inline Vec3i +floorVec3(const Vec3R& v) +{ + return Vec3i(int(std::floor(v(0))), int(std::floor(v(1))), int(std::floor(v(2)))); +} + + +inline Vec3i +ceilVec3(const Vec3R& v) +{ + return Vec3i(int(std::ceil(v(0))), int(std::ceil(v(1))), int(std::ceil(v(2)))); +} + + +inline Vec3i +roundVec3(const Vec3R& v) +{ + return Vec3i(int(::round(v(0))), int(::round(v(1))), int(::round(v(2)))); +} + +} // namespace local_util + + +//////////////////////////////////////// PointSampler + + +template +inline bool +PointSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + return inTree.probeValue(Coord(local_util::roundVec3(inCoord)), result); +} + +template +inline typename TreeT::ValueType +PointSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + return inTree.getValue(Coord(local_util::roundVec3(inCoord))); +} + + +//////////////////////////////////////// BoxSampler + +template +inline void +BoxSampler::getValues(ValueT (&data)[N][N][N], const TreeT& inTree, Coord ijk) +{ + data[0][0][0] = inTree.getValue(ijk); // i, j, k + + ijk[2] += 1; + data[0][0][1] = inTree.getValue(ijk); // i, j, k + 1 + + ijk[1] += 1; + data[0][1][1] = inTree.getValue(ijk); // i, j+1, k + 1 + + ijk[2] -= 1; + data[0][1][0] = inTree.getValue(ijk); // i, j+1, k + + ijk[0] += 1; + ijk[1] -= 1; + data[1][0][0] = inTree.getValue(ijk); // i+1, j, k + + ijk[2] += 1; + data[1][0][1] = inTree.getValue(ijk); // i+1, j, k + 1 + + ijk[1] += 1; + data[1][1][1] = inTree.getValue(ijk); // i+1, j+1, k + 1 + + ijk[2] -= 1; + data[1][1][0] = inTree.getValue(ijk); // i+1, j+1, k +} + +template +inline bool +BoxSampler::probeValues(ValueT (&data)[N][N][N], const TreeT& inTree, Coord ijk) +{ + bool hasActiveValues = false; + hasActiveValues |= inTree.probeValue(ijk, data[0][0][0]); // i, j, k + + ijk[2] += 1; + hasActiveValues |= inTree.probeValue(ijk, data[0][0][1]); // i, j, k + 1 + + ijk[1] += 1; + hasActiveValues |= inTree.probeValue(ijk, data[0][1][1]); // i, j+1, k + 1 + + ijk[2] -= 1; + hasActiveValues |= inTree.probeValue(ijk, data[0][1][0]); // i, j+1, k + + ijk[0] += 1; + ijk[1] -= 1; + hasActiveValues |= inTree.probeValue(ijk, data[1][0][0]); // i+1, j, k + + ijk[2] += 1; + hasActiveValues |= inTree.probeValue(ijk, data[1][0][1]); // i+1, j, k + 1 + + ijk[1] += 1; + hasActiveValues |= inTree.probeValue(ijk, data[1][1][1]); // i+1, j+1, k + 1 + + ijk[2] -= 1; + hasActiveValues |= inTree.probeValue(ijk, data[1][1][0]); // i+1, j+1, k + + return hasActiveValues; +} + +template +inline void +BoxSampler::extrema(ValueT (&data)[N][N][N], ValueT& vMin, ValueT &vMax) +{ + vMin = vMax = data[0][0][0]; + vMin = math::Min(vMin, data[0][0][1]); + vMax = math::Max(vMax, data[0][0][1]); + vMin = math::Min(vMin, data[0][1][0]); + vMax = math::Max(vMax, data[0][1][0]); + vMin = math::Min(vMin, data[0][1][1]); + vMax = math::Max(vMax, data[0][1][1]); + vMin = math::Min(vMin, data[1][0][0]); + vMax = math::Max(vMax, data[1][0][0]); + vMin = math::Min(vMin, data[1][0][1]); + vMax = math::Max(vMax, data[1][0][1]); + vMin = math::Min(vMin, data[1][1][0]); + vMax = math::Max(vMax, data[1][1][0]); + vMin = math::Min(vMin, data[1][1][1]); + vMax = math::Max(vMax, data[1][1][1]); +} + + +template +inline ValueT +BoxSampler::trilinearInterpolation(ValueT (&data)[N][N][N], const Vec3R& uvw) +{ + auto _interpolate = [](const ValueT& a, const ValueT& b, double weight) + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto temp = (b - a) * weight; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return static_cast(a + ValueT(temp)); + }; + + // Trilinear interpolation: + // The eight surrounding latice values are used to construct the result. \n + // result(x,y,z) = + // v000 (1-x)(1-y)(1-z) + v001 (1-x)(1-y)z + v010 (1-x)y(1-z) + v011 (1-x)yz + // + v100 x(1-y)(1-z) + v101 x(1-y)z + v110 xy(1-z) + v111 xyz + + return _interpolate( + _interpolate( + _interpolate(data[0][0][0], data[0][0][1], uvw[2]), + _interpolate(data[0][1][0], data[0][1][1], uvw[2]), + uvw[1]), + _interpolate( + _interpolate(data[1][0][0], data[1][0][1], uvw[2]), + _interpolate(data[1][1][0], data[1][1][1], uvw[2]), + uvw[1]), + uvw[0]); +} + + +template +inline bool +BoxSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + using ValueT = typename TreeT::ValueType; + + const Vec3i inIdx = local_util::floorVec3(inCoord); + const Vec3R uvw = inCoord - inIdx; + + // Retrieve the values of the eight voxels surrounding the + // fractional source coordinates. + ValueT data[2][2][2]; + + const bool hasActiveValues = BoxSampler::probeValues(data, inTree, Coord(inIdx)); + + result = BoxSampler::trilinearInterpolation(data, uvw); + + return hasActiveValues; +} + + +template +inline typename TreeT::ValueType +BoxSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + using ValueT = typename TreeT::ValueType; + + const Vec3i inIdx = local_util::floorVec3(inCoord); + const Vec3R uvw = inCoord - inIdx; + + // Retrieve the values of the eight voxels surrounding the + // fractional source coordinates. + ValueT data[2][2][2]; + + BoxSampler::getValues(data, inTree, Coord(inIdx)); + + return BoxSampler::trilinearInterpolation(data, uvw); +} + + +//////////////////////////////////////// QuadraticSampler + +template +inline ValueT +QuadraticSampler::triquadraticInterpolation(ValueT (&data)[N][N][N], const Vec3R& uvw) +{ + auto _interpolate = [](const ValueT* value, double weight) + { + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueT + a = static_cast(0.5 * (value[0] + value[2]) - value[1]), + b = static_cast(0.5 * (value[2] - value[0])), + c = static_cast(value[1]); + const auto temp = weight * (weight * a + b) + c; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return static_cast(temp); + }; + + /// @todo For vector types, interpolate over each component independently. + ValueT vx[3]; + for (int dx = 0; dx < 3; ++dx) { + ValueT vy[3]; + for (int dy = 0; dy < 3; ++dy) { + // Fit a parabola to three contiguous samples in z + // (at z=-1, z=0 and z=1), then evaluate the parabola at z', + // where z' is the fractional part of inCoord.z, i.e., + // inCoord.z - inIdx.z. The coefficients come from solving + // + // | (-1)^2 -1 1 || a | | v0 | + // | 0 0 1 || b | = | v1 | + // | 1^2 1 1 || c | | v2 | + // + // for a, b and c. + const ValueT* vz = &data[dx][dy][0]; + vy[dy] = _interpolate(vz, uvw.z()); + }//loop over y + // Fit a parabola to three interpolated samples in y, then + // evaluate the parabola at y', where y' is the fractional + // part of inCoord.y. + vx[dx] = _interpolate(vy, uvw.y()); + }//loop over x + // Fit a parabola to three interpolated samples in x, then + // evaluate the parabola at the fractional part of inCoord.x. + return _interpolate(vx, uvw.x()); +} + +template +inline bool +QuadraticSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + using ValueT = typename TreeT::ValueType; + + const Vec3i inIdx = local_util::floorVec3(inCoord), inLoIdx = inIdx - Vec3i(1, 1, 1); + const Vec3R uvw = inCoord - inIdx; + + // Retrieve the values of the 27 voxels surrounding the + // fractional source coordinates. + bool active = false; + ValueT data[3][3][3]; + for (int dx = 0, ix = inLoIdx.x(); dx < 3; ++dx, ++ix) { + for (int dy = 0, iy = inLoIdx.y(); dy < 3; ++dy, ++iy) { + for (int dz = 0, iz = inLoIdx.z(); dz < 3; ++dz, ++iz) { + if (inTree.probeValue(Coord(ix, iy, iz), data[dx][dy][dz])) active = true; + } + } + } + + result = QuadraticSampler::triquadraticInterpolation(data, uvw); + + return active; +} + +template +inline typename TreeT::ValueType +QuadraticSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + using ValueT = typename TreeT::ValueType; + + const Vec3i inIdx = local_util::floorVec3(inCoord), inLoIdx = inIdx - Vec3i(1, 1, 1); + const Vec3R uvw = inCoord - inIdx; + + // Retrieve the values of the 27 voxels surrounding the + // fractional source coordinates. + ValueT data[3][3][3]; + for (int dx = 0, ix = inLoIdx.x(); dx < 3; ++dx, ++ix) { + for (int dy = 0, iy = inLoIdx.y(); dy < 3; ++dy, ++iy) { + for (int dz = 0, iz = inLoIdx.z(); dz < 3; ++dz, ++iz) { + data[dx][dy][dz] = inTree.getValue(Coord(ix, iy, iz)); + } + } + } + + return QuadraticSampler::triquadraticInterpolation(data, uvw); +} + + +//////////////////////////////////////// StaggeredPointSampler + + +template +inline bool +StaggeredPointSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + using ValueType = typename TreeT::ValueType; + + ValueType tempX, tempY, tempZ; + bool active = false; + + active = PointSampler::sample(inTree, inCoord + Vec3R(0.5, 0, 0), tempX) || active; + active = PointSampler::sample(inTree, inCoord + Vec3R(0, 0.5, 0), tempY) || active; + active = PointSampler::sample(inTree, inCoord + Vec3R(0, 0, 0.5), tempZ) || active; + + result.x() = tempX.x(); + result.y() = tempY.y(); + result.z() = tempZ.z(); + + return active; +} + +template +inline typename TreeT::ValueType +StaggeredPointSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + using ValueT = typename TreeT::ValueType; + + const ValueT tempX = PointSampler::sample(inTree, inCoord + Vec3R(0.5, 0.0, 0.0)); + const ValueT tempY = PointSampler::sample(inTree, inCoord + Vec3R(0.0, 0.5, 0.0)); + const ValueT tempZ = PointSampler::sample(inTree, inCoord + Vec3R(0.0, 0.0, 0.5)); + + return ValueT(tempX.x(), tempY.y(), tempZ.z()); +} + + +//////////////////////////////////////// StaggeredBoxSampler + + +template +inline bool +StaggeredBoxSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + using ValueType = typename TreeT::ValueType; + + ValueType tempX, tempY, tempZ; + tempX = tempY = tempZ = zeroVal(); + bool active = false; + + active = BoxSampler::sample(inTree, inCoord + Vec3R(0.5, 0, 0), tempX) || active; + active = BoxSampler::sample(inTree, inCoord + Vec3R(0, 0.5, 0), tempY) || active; + active = BoxSampler::sample(inTree, inCoord + Vec3R(0, 0, 0.5), tempZ) || active; + + result.x() = tempX.x(); + result.y() = tempY.y(); + result.z() = tempZ.z(); + + return active; +} + +template +inline typename TreeT::ValueType +StaggeredBoxSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + using ValueT = typename TreeT::ValueType; + + const ValueT tempX = BoxSampler::sample(inTree, inCoord + Vec3R(0.5, 0.0, 0.0)); + const ValueT tempY = BoxSampler::sample(inTree, inCoord + Vec3R(0.0, 0.5, 0.0)); + const ValueT tempZ = BoxSampler::sample(inTree, inCoord + Vec3R(0.0, 0.0, 0.5)); + + return ValueT(tempX.x(), tempY.y(), tempZ.z()); +} + + +//////////////////////////////////////// StaggeredQuadraticSampler + + +template +inline bool +StaggeredQuadraticSampler::sample(const TreeT& inTree, const Vec3R& inCoord, + typename TreeT::ValueType& result) +{ + using ValueType = typename TreeT::ValueType; + + ValueType tempX, tempY, tempZ; + bool active = false; + + active = QuadraticSampler::sample(inTree, inCoord + Vec3R(0.5, 0, 0), tempX) || active; + active = QuadraticSampler::sample(inTree, inCoord + Vec3R(0, 0.5, 0), tempY) || active; + active = QuadraticSampler::sample(inTree, inCoord + Vec3R(0, 0, 0.5), tempZ) || active; + + result.x() = tempX.x(); + result.y() = tempY.y(); + result.z() = tempZ.z(); + + return active; +} + +template +inline typename TreeT::ValueType +StaggeredQuadraticSampler::sample(const TreeT& inTree, const Vec3R& inCoord) +{ + using ValueT = typename TreeT::ValueType; + + const ValueT tempX = QuadraticSampler::sample(inTree, inCoord + Vec3R(0.5, 0.0, 0.0)); + const ValueT tempY = QuadraticSampler::sample(inTree, inCoord + Vec3R(0.0, 0.5, 0.0)); + const ValueT tempZ = QuadraticSampler::sample(inTree, inCoord + Vec3R(0.0, 0.0, 0.5)); + + return ValueT(tempX.x(), tempY.y(), tempZ.z()); +} + +//////////////////////////////////////// Sampler + +template <> +struct Sampler<0, false> : public PointSampler {}; + +template <> +struct Sampler<1, false> : public BoxSampler {}; + +template <> +struct Sampler<2, false> : public QuadraticSampler {}; + +template <> +struct Sampler<0, true> : public StaggeredPointSampler {}; + +template <> +struct Sampler<1, true> : public StaggeredBoxSampler {}; + +template <> +struct Sampler<2, true> : public StaggeredQuadraticSampler {}; + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_INTERPOLATION_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetAdvect.h b/openvdb/tools/LevelSetAdvect.h new file mode 100644 index 00000000..2214560b --- /dev/null +++ b/openvdb/tools/LevelSetAdvect.h @@ -0,0 +1,575 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file tools/LevelSetAdvect.h +/// +/// @brief Hyperbolic advection of narrow-band level sets + +#ifndef OPENVDB_TOOLS_LEVEL_SET_ADVECT_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVEL_SET_ADVECT_HAS_BEEN_INCLUDED + +#include +#include +#include +#include "LevelSetTracker.h" +#include "VelocityFields.h" // for EnrightField +#include +//#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Hyperbolic advection of narrow-band level sets in an +/// external velocity field +/// +/// The @c FieldType template argument below refers to any functor +/// with the following interface (see tools/VelocityFields.h +/// for examples): +/// +/// @code +/// class VelocityField { +/// ... +/// public: +/// openvdb::VectorType operator() (const openvdb::Coord& xyz, ValueType time) const; +/// ... +/// }; +/// @endcode +/// +/// @note The functor method returns the velocity field at coordinate +/// position xyz of the advection grid, and for the specified +/// time. Note that since the velocity is returned in the local +/// coordinate space of the grid that is being advected, the functor +/// typically depends on the transformation of that grid. This design +/// is chosen for performance reasons. Finally we will assume that the +/// functor method is NOT threadsafe (typically uses a ValueAccessor) +/// and that its lightweight enough that we can copy it per thread. +/// +/// The @c InterruptType template argument below refers to any class +/// with the following interface: +/// @code +/// class Interrupter { +/// ... +/// public: +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent=-1) // return true to break computation +///}; +/// @endcode +/// +/// @note If no template argument is provided for this InterruptType +/// the util::NullInterrupter is used which implies that all +/// interrupter calls are no-ops (i.e. incurs no computational overhead). +/// + +template, + typename InterruptT = util::NullInterrupter> +class LevelSetAdvection +{ +public: + using GridType = GridT; + using TrackerT = LevelSetTracker; + using LeafRange = typename TrackerT::LeafRange; + using LeafType = typename TrackerT::LeafType; + using BufferType = typename TrackerT::BufferType; + using ValueType = typename TrackerT::ValueType; + using VectorType = typename FieldT::VectorType; + + /// Main constructor + LevelSetAdvection(GridT& grid, const FieldT& field, InterruptT* interrupt = nullptr): + mTracker(grid, interrupt), mField(field), + mSpatialScheme(math::HJWENO5_BIAS), + mTemporalScheme(math::TVD_RK2) {} + + virtual ~LevelSetAdvection() {} + + /// @brief Return the spatial finite difference scheme + math::BiasedGradientScheme getSpatialScheme() const { return mSpatialScheme; } + /// @brief Set the spatial finite difference scheme + void setSpatialScheme(math::BiasedGradientScheme scheme) { mSpatialScheme = scheme; } + + /// @brief Return the temporal integration scheme + math::TemporalIntegrationScheme getTemporalScheme() const { return mTemporalScheme; } + /// @brief Set the spatial finite difference scheme + void setTemporalScheme(math::TemporalIntegrationScheme scheme) { mTemporalScheme = scheme; } + + /// @brief Return the spatial finite difference scheme + math::BiasedGradientScheme getTrackerSpatialScheme() const { + return mTracker.getSpatialScheme(); + } + /// @brief Set the spatial finite difference scheme + void setTrackerSpatialScheme(math::BiasedGradientScheme scheme) { + mTracker.setSpatialScheme(scheme); + } + /// @brief Return the temporal integration scheme + math::TemporalIntegrationScheme getTrackerTemporalScheme() const { + return mTracker.getTemporalScheme(); + } + /// @brief Set the spatial finite difference scheme + void setTrackerTemporalScheme(math::TemporalIntegrationScheme scheme) { + mTracker.setTemporalScheme(scheme); + } + + /// @brief Return The number of normalizations performed per track or + /// normalize call. + int getNormCount() const { return mTracker.getNormCount(); } + /// @brief Set the number of normalizations performed per track or + /// normalize call. + void setNormCount(int n) { mTracker.setNormCount(n); } + + /// @brief Return the grain-size used for multi-threading + int getGrainSize() const { return mTracker.getGrainSize(); } + /// @brief Set the grain-size used for multi-threading. + /// @note A grain size of 0 or less disables multi-threading! + void setGrainSize(int grainsize) { mTracker.setGrainSize(grainsize); } + + /// Advect the level set from its current time, time0, to its + /// final time, time1. If time0>time1 backward advection is performed. + /// + /// @return number of CFL iterations used to advect from time0 to time1 + size_t advect(ValueType time0, ValueType time1); + +private: + // disallow copy construction and copy by assinment! + LevelSetAdvection(const LevelSetAdvection&);// not implemented + LevelSetAdvection& operator=(const LevelSetAdvection&);// not implemented + + // This templated private struct implements all the level set magic. + template + struct Advect + { + /// Main constructor + Advect(LevelSetAdvection& parent); + /// Shallow copy constructor called by tbb::parallel_for() threads + Advect(const Advect& other); + /// Destructor + virtual ~Advect() { if (mIsMaster) this->clearField(); } + /// Advect the level set from its current time, time0, to its final time, time1. + /// @return number of CFL iterations + size_t advect(ValueType time0, ValueType time1); + /// Used internally by tbb::parallel_for() + void operator()(const LeafRange& r) const + { + if (mTask) mTask(const_cast(this), r); + else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly"); + } + /// method calling tbb + void cook(const char* msg, size_t swapBuffer = 0); + /// Sample field and return the CFL time step + typename GridT::ValueType sampleField(ValueType time0, ValueType time1); + template void sample(const LeafRange& r, ValueType t0, ValueType t1); + inline void sampleXformed(const LeafRange& r, ValueType t0, ValueType t1) + { + this->sample(r, t0, t1); + } + inline void sampleAligned(const LeafRange& r, ValueType t0, ValueType t1) + { + this->sample(r, t0, t1); + } + void clearField(); + // Convex combination of Phi and a forward Euler advection steps: + // Phi(result) = alpha * Phi(phi) + (1-alpha) * (Phi(0) - dt * Speed(speed)*|Grad[Phi(0)]|); + template + void euler(const LeafRange&, ValueType, Index, Index); + inline void euler01(const LeafRange& r, ValueType t) {this->euler<0,1>(r, t, 0, 1);} + inline void euler12(const LeafRange& r, ValueType t) {this->euler<1,2>(r, t, 1, 1);} + inline void euler34(const LeafRange& r, ValueType t) {this->euler<3,4>(r, t, 1, 2);} + inline void euler13(const LeafRange& r, ValueType t) {this->euler<1,3>(r, t, 1, 2);} + + LevelSetAdvection& mParent; + VectorType* mVelocity; + size_t* mOffsets; + const MapT* mMap; + typename std::function mTask; + const bool mIsMaster; + }; // end of private Advect struct + + template + size_t advect1(ValueType time0, ValueType time1); + + template + size_t advect2(ValueType time0, ValueType time1); + + template + size_t advect3(ValueType time0, ValueType time1); + + TrackerT mTracker; + //each thread needs a deep copy of the field since it might contain a ValueAccessor + const FieldT mField; + math::BiasedGradientScheme mSpatialScheme; + math::TemporalIntegrationScheme mTemporalScheme; + +};//end of LevelSetAdvection + + +template +inline size_t +LevelSetAdvection::advect(ValueType time0, ValueType time1) +{ + switch (mSpatialScheme) { + case math::FIRST_BIAS: + return this->advect1(time0, time1); + case math::SECOND_BIAS: + return this->advect1(time0, time1); + case math::THIRD_BIAS: + return this->advect1(time0, time1); + case math::WENO5_BIAS: + return this->advect1(time0, time1); + case math::HJWENO5_BIAS: + return this->advect1(time0, time1); + default: + OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!"); + } + return 0; +} + + +template +template +inline size_t +LevelSetAdvection::advect1(ValueType time0, ValueType time1) +{ + switch (mTemporalScheme) { + case math::TVD_RK1: + return this->advect2(time0, time1); + case math::TVD_RK2: + return this->advect2(time0, time1); + case math::TVD_RK3: + return this->advect2(time0, time1); + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + } + return 0; +} + + +template +template +inline size_t +LevelSetAdvection::advect2(ValueType time0, ValueType time1) +{ + const math::Transform& trans = mTracker.grid().transform(); + if (trans.mapType() == math::UniformScaleMap::mapType()) { + return this->advect3(time0, time1); + } else if (trans.mapType() == math::UniformScaleTranslateMap::mapType()) { + return this->advect3( + time0, time1); + } else if (trans.mapType() == math::UnitaryMap::mapType()) { + return this->advect3(time0, time1); + } else if (trans.mapType() == math::TranslationMap::mapType()) { + return this->advect3(time0, time1); + } else { + OPENVDB_THROW(ValueError, "MapType not supported!"); + } + return 0; +} + + +template +template< + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme, + typename MapT> +inline size_t +LevelSetAdvection::advect3(ValueType time0, ValueType time1) +{ + Advect tmp(*this); + return tmp.advect(time0, time1); +} + + +/////////////////////////////////////////////////////////////////////// + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline +LevelSetAdvection:: +Advect:: +Advect(LevelSetAdvection& parent) + : mParent(parent) + , mVelocity(nullptr) + , mOffsets(nullptr) + , mMap(parent.mTracker.grid().transform().template constMap().get()) + , mTask(0) + , mIsMaster(true) +{ +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline +LevelSetAdvection:: +Advect:: +Advect(const Advect& other) + : mParent(other.mParent) + , mVelocity(other.mVelocity) + , mOffsets(other.mOffsets) + , mMap(other.mMap) + , mTask(other.mTask) + , mIsMaster(false) +{ +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline size_t +LevelSetAdvection:: +Advect:: +advect(ValueType time0, ValueType time1) +{ + namespace ph = std::placeholders; + + //util::CpuTimer timer; + size_t countCFL = 0; + if ( math::isZero(time0 - time1) ) return countCFL; + const bool isForward = time0 < time1; + while ((isForward ? time0time1) && mParent.mTracker.checkInterrupter()) { + /// Make sure we have enough temporal auxiliary buffers + //timer.start( "\nallocate buffers" ); + mParent.mTracker.leafs().rebuildAuxBuffers(TemporalScheme == math::TVD_RK3 ? 2 : 1); + //timer.stop(); + + const ValueType dt = this->sampleField(time0, time1); + if ( math::isZero(dt) ) break;//V is essentially zero so terminate + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN //switch is resolved at compile-time + switch(TemporalScheme) { + case math::TVD_RK1: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(0) + mTask = std::bind(&Advect::euler01, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Advecting level set using TVD_RK1", 1); + break; + case math::TVD_RK2: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(0) + mTask = std::bind(&Advect::euler01, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Advecting level set using TVD_RK1 (step 1 of 2)", 1); + + // Convex combine explict Euler step: t2 = t0 + dt + // Phi_t2(1) = 1/2 * Phi_t0(1) + 1/2 * (Phi_t1(0) - dt * V.Grad_t1(0)) + mTask = std::bind(&Advect::euler12, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 1 such that Phi_t2(0) and Phi_t1(1) + this->cook("Advecting level set using TVD_RK1 (step 2 of 2)", 1); + break; + case math::TVD_RK3: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(0) + mTask = std::bind(&Advect::euler01, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Advecting level set using TVD_RK3 (step 1 of 3)", 1); + + // Convex combine explict Euler step: t2 = t0 + dt/2 + // Phi_t2(2) = 3/4 * Phi_t0(1) + 1/4 * (Phi_t1(0) - dt * V.Grad_t1(0)) + mTask = std::bind(&Advect::euler34, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 2 such that Phi_t2(0) and Phi_t1(2) + this->cook("Advecting level set using TVD_RK3 (step 2 of 3)", 2); + + // Convex combine explict Euler step: t3 = t0 + dt + // Phi_t3(2) = 1/3 * Phi_t0(1) + 2/3 * (Phi_t2(0) - dt * V.Grad_t2(0) + mTask = std::bind(&Advect::euler13, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 2 such that Phi_t3(0) and Phi_t2(2) + this->cook("Advecting level set using TVD_RK3 (step 3 of 3)", 2); + break; + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + }//end of compile-time resolved switch + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + + time0 += isForward ? dt : -dt; + ++countCFL; + mParent.mTracker.leafs().removeAuxBuffers(); + this->clearField(); + /// Track the narrow band + mParent.mTracker.track(); + }//end wile-loop over time + return countCFL;//number of CLF propagation steps +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline typename GridT::ValueType +LevelSetAdvection:: +Advect:: +sampleField(ValueType time0, ValueType time1) +{ + namespace ph = std::placeholders; + + const int grainSize = mParent.mTracker.getGrainSize(); + const size_t leafCount = mParent.mTracker.leafs().leafCount(); + if (leafCount==0) return ValueType(0.0); + + // Compute the prefix sum of offsets to active voxels + size_t size=0, voxelCount=mParent.mTracker.leafs().getPrefixSum(mOffsets, size, grainSize); + + // Sample the velocity field + if (mParent.mField.transform() == mParent.mTracker.grid().transform()) { + mTask = std::bind(&Advect::sampleAligned, ph::_1, ph::_2, time0, time1); + } else { + mTask = std::bind(&Advect::sampleXformed, ph::_1, ph::_2, time0, time1); + } + assert(voxelCount == mParent.mTracker.grid().activeVoxelCount()); + mVelocity = new VectorType[ voxelCount ]; + this->cook("Sampling advection field"); + + // Find the extrema of the magnitude of the velocities + ValueType maxAbsV = 0; + VectorType* v = mVelocity; + for (size_t i = 0; i < voxelCount; ++i, ++v) { + maxAbsV = math::Max(maxAbsV, ValueType(v->lengthSqr())); + } + + // Compute the CFL number + if (math::isApproxZero(maxAbsV, math::Delta::value())) return ValueType(0); + static const ValueType CFL = (TemporalScheme == math::TVD_RK1 ? ValueType(0.3) : + TemporalScheme == math::TVD_RK2 ? ValueType(0.9) : + ValueType(1.0))/math::Sqrt(ValueType(3.0)); + const ValueType dt = math::Abs(time1 - time0), dx = mParent.mTracker.voxelSize(); + return math::Min(dt, ValueType(CFL*dx/math::Sqrt(maxAbsV))); +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +template +inline void +LevelSetAdvection:: +Advect:: +sample(const LeafRange& range, ValueType time0, ValueType time1) +{ + const bool isForward = time0 < time1; + using VoxelIterT = typename LeafType::ValueOnCIter; + const MapT& map = *mMap; + const FieldT field( mParent.mField ); + mParent.mTracker.checkInterrupter(); + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + VectorType* vel = mVelocity + mOffsets[ leafIter.pos() ]; + for (VoxelIterT iter = leafIter->cbeginValueOn(); iter; ++iter, ++vel) { + const VectorType v = Aligned ? field(iter.getCoord(), time0) ://resolved at compile time + field(map.applyMap(iter.getCoord().asVec3d()), time0); + *vel = isForward ? v : -v; + } + } +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline void +LevelSetAdvection:: +Advect:: +clearField() +{ + delete [] mOffsets; + delete [] mVelocity; + mOffsets = nullptr; + mVelocity = nullptr; +} + + +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +inline void +LevelSetAdvection:: +Advect:: +cook(const char* msg, size_t swapBuffer) +{ + mParent.mTracker.startInterrupter( msg ); + + const int grainSize = mParent.mTracker.getGrainSize(); + const LeafRange range = mParent.mTracker.leafs().leafRange(grainSize); + + grainSize == 0 ? (*this)(range) : tbb::parallel_for(range, *this); + + mParent.mTracker.leafs().swapLeafBuffer(swapBuffer, grainSize == 0); + + mParent.mTracker.endInterrupter(); +} + + +// Convex combination of Phi and a forward Euler advection steps: +// Phi(result) = alpha * Phi(phi) + (1-alpha) * (Phi(0) - dt * V.Grad(0)); +template +template< + typename MapT, + math::BiasedGradientScheme SpatialScheme, + math::TemporalIntegrationScheme TemporalScheme> +template +inline void +LevelSetAdvection:: +Advect:: +euler(const LeafRange& range, ValueType dt, Index phiBuffer, Index resultBuffer) +{ + using SchemeT = math::BIAS_SCHEME; + using StencilT = typename SchemeT::template ISStencil::StencilType; + using VoxelIterT = typename LeafType::ValueOnCIter; + using GradT = math::GradientBiased; + + static const ValueType Alpha = ValueType(Nominator)/ValueType(Denominator); + static const ValueType Beta = ValueType(1) - Alpha; + + mParent.mTracker.checkInterrupter(); + const MapT& map = *mMap; + StencilT stencil(mParent.mTracker.grid()); + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + const VectorType* vel = mVelocity + mOffsets[ leafIter.pos() ]; + const ValueType* phi = leafIter.buffer(phiBuffer).data(); + ValueType* result = leafIter.buffer(resultBuffer).data(); + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter, ++vel) { + const Index i = voxelIter.pos(); + stencil.moveTo(voxelIter); + const ValueType a = + stencil.getValue() - dt * vel->dot(GradT::result(map, stencil, *vel)); + result[i] = Nominator ? Alpha * phi[i] + Beta * a : a; + }//loop over active voxels in the leaf of the mask + }//loop over leafs of the level set +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVEL_SET_ADVECT_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetFilter.h b/openvdb/tools/LevelSetFilter.h new file mode 100644 index 00000000..71ce06e2 --- /dev/null +++ b/openvdb/tools/LevelSetFilter.h @@ -0,0 +1,510 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file tools/LevelSetFilter.h +/// +/// @brief Performs various types of level set deformations with +/// interface tracking. These unrestricted deformations include +/// surface smoothing (e.g., Laplacian flow), filtering (e.g., mean +/// value) and morphological operations (e.g., morphological opening). +/// All these operations can optionally be masked with another grid that +/// acts as an alpha-mask. + +#ifndef OPENVDB_TOOLS_LEVELSETFILTER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETFILTER_HAS_BEEN_INCLUDED + +#include "LevelSetTracker.h" +#include "Interpolation.h" +#include // for std::max() +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Filtering (e.g. diffusion) of narrow-band level sets. An +/// optional scalar field can be used to produce a (smooth) alpha mask +/// for the filtering. +/// +/// @note This class performs proper interface tracking which allows +/// for unrestricted surface deformations +template::Type, + typename InterruptT = util::NullInterrupter> +class LevelSetFilter : public LevelSetTracker +{ +public: + using BaseType = LevelSetTracker; + using GridType = GridT; + using MaskType = MaskT; + using TreeType = typename GridType::TreeType; + using ValueType = typename TreeType::ValueType; + using AlphaType = typename MaskType::ValueType; + static_assert(std::is_floating_point::value, + "LevelSetFilter requires a mask grid with floating-point values"); + + /// @brief Main constructor from a grid + /// @param grid The level set to be filtered. + /// @param interrupt Optional interrupter. + LevelSetFilter(GridType& grid, InterruptT* interrupt = nullptr) + : BaseType(grid, interrupt) + , mMinMask(0) + , mMaxMask(1) + , mInvertMask(false) + { + } + /// @brief Default destructor + ~LevelSetFilter() override {} + + /// @brief Return the minimum value of the mask to be used for the + /// derivation of a smooth alpha value. + AlphaType minMask() const { return mMinMask; } + /// @brief Return the maximum value of the mask to be used for the + /// derivation of a smooth alpha value. + AlphaType maxMask() const { return mMaxMask; } + /// @brief Define the range for the (optional) scalar mask. + /// @param min Minimum value of the range. + /// @param max Maximum value of the range. + /// @details Mask values outside the range maps to alpha values of + /// respectfully zero and one, and values inside the range maps + /// smoothly to 0->1 (unless of course the mask is inverted). + /// @throw ValueError if @a min is not smaller than @a max. + void setMaskRange(AlphaType min, AlphaType max) + { + if (!(min < max)) OPENVDB_THROW(ValueError, "Invalid mask range (expects min < max)"); + mMinMask = min; + mMaxMask = max; + } + + /// @brief Return true if the mask is inverted, i.e. min->max in the + /// original mask maps to 1->0 in the inverted alpha mask. + bool isMaskInverted() const { return mInvertMask; } + /// @brief Invert the optional mask, i.e. min->max in the original + /// mask maps to 1->0 in the inverted alpha mask. + void invertMask(bool invert=true) { mInvertMask = invert; } + + /// @brief One iteration of mean-curvature flow of the level set. + /// @param mask Optional alpha mask. + void meanCurvature(const MaskType* mask = nullptr) + { + Filter f(this, mask); f.meanCurvature(); + } + + /// @brief One iteration of Laplacian flow of the level set. + /// @param mask Optional alpha mask. + void laplacian(const MaskType* mask = nullptr) + { + Filter f(this, mask); f.laplacian(); + } + + /// @brief One iteration of a fast separable Gaussian filter. + /// @param width Width of the Gaussian kernel in voxel units. + /// @param mask Optional alpha mask. + /// + /// @note This is approximated as 4 iterations of a separable mean filter + /// which typically leads an approximation that's better than 95%! + void gaussian(int width = 1, const MaskType* mask = nullptr) + { + Filter f(this, mask); f.gaussian(width); + } + + /// @brief Offset the level set by the specified (world) distance. + /// @param offset Value of the offset. + /// @param mask Optional alpha mask. + void offset(ValueType offset, const MaskType* mask = nullptr) + { + Filter f(this, mask); f.offset(offset); + } + + /// @brief One iteration of median-value flow of the level set. + /// @param width Width of the median-value kernel in voxel units. + /// @param mask Optional alpha mask. + /// + /// @warning This filter is not separable and is hence relatively + /// slow! + void median(int width = 1, const MaskType* mask = nullptr) + { + Filter f(this, mask); f.median(width); + } + + /// @brief One iteration of mean-value flow of the level set. + /// @param width Width of the mean-value kernel in voxel units. + /// @param mask Optional alpha mask. + /// + /// @note This filter is separable so it's fast! + void mean(int width = 1, const MaskType* mask = nullptr) + { + Filter f(this, mask); f.mean(width); + } + +private: + // disallow copy construction and copy by assignment! + LevelSetFilter(const LevelSetFilter&);// not implemented + LevelSetFilter& operator=(const LevelSetFilter&);// not implemented + + // Private struct that implements all the filtering. + struct Filter + { + using LeafT = typename TreeType::LeafNodeType; + using VoxelIterT = typename LeafT::ValueOnIter; + using VoxelCIterT = typename LeafT::ValueOnCIter; + using BufferT = typename tree::LeafManager::BufferType; + using LeafRange = typename tree::LeafManager::LeafRange; + using LeafIterT = typename LeafRange::Iterator; + using AlphaMaskT = tools::AlphaMask; + + Filter(LevelSetFilter* parent, const MaskType* mask) : mParent(parent), mMask(mask) {} + Filter(const Filter&) = default; + virtual ~Filter() {} + + void box(int width); + void median(int width); + void mean(int width); + void gaussian(int width); + void laplacian(); + void meanCurvature(); + void offset(ValueType value); + void operator()(const LeafRange& r) const + { + if (mTask) mTask(const_cast(this), r); + else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly"); + } + void cook(bool swap) + { + const int n = mParent->getGrainSize(); + if (n>0) { + tbb::parallel_for(mParent->leafs().leafRange(n), *this); + } else { + (*this)(mParent->leafs().leafRange()); + } + if (swap) mParent->leafs().swapLeafBuffer(1, n==0); + } + + template + struct Avg { + Avg(const GridT& grid, Int32 w) : + acc(grid.tree()), width(w), frac(1/ValueType(2*w+1)) {} + inline ValueType operator()(Coord xyz) + { + ValueType sum = zeroVal(); + Int32& i = xyz[Axis], j = i + width; + for (i -= width; i <= j; ++i) sum += acc.getValue(xyz); + return sum*frac; + } + typename GridT::ConstAccessor acc; + const Int32 width; + const ValueType frac; + }; + + template + void boxImpl(const LeafRange& r, Int32 w); + + void boxXImpl(const LeafRange& r, Int32 w) { this->boxImpl >(r,w); } + void boxZImpl(const LeafRange& r, Int32 w) { this->boxImpl >(r,w); } + void boxYImpl(const LeafRange& r, Int32 w) { this->boxImpl >(r,w); } + + void medianImpl(const LeafRange&, int); + void meanCurvatureImpl(const LeafRange&); + void laplacianImpl(const LeafRange&); + void offsetImpl(const LeafRange&, ValueType); + + LevelSetFilter* mParent; + const MaskType* mMask; + typename std::function mTask; + }; // end of private Filter struct + + AlphaType mMinMask, mMaxMask; + bool mInvertMask; + +}; // end of LevelSetFilter class + + +//////////////////////////////////////// + +template +inline void +LevelSetFilter::Filter::median(int width) +{ + mParent->startInterrupter("Median-value flow of level set"); + + mParent->leafs().rebuildAuxBuffers(1, mParent->getGrainSize()==0); + + mTask = std::bind(&Filter::medianImpl, + std::placeholders::_1, std::placeholders::_2, std::max(1, width)); + this->cook(true); + + mParent->track(); + + mParent->endInterrupter(); +} + +template +inline void +LevelSetFilter::Filter::mean(int width) +{ + mParent->startInterrupter("Mean-value flow of level set"); + + this->box(width); + + mParent->endInterrupter(); +} + +template +inline void +LevelSetFilter::Filter::gaussian(int width) +{ + mParent->startInterrupter("Gaussian flow of level set"); + + for (int n=0; n<4; ++n) this->box(width); + + mParent->endInterrupter(); +} + +template +inline void +LevelSetFilter::Filter::box(int width) +{ + mParent->leafs().rebuildAuxBuffers(1, mParent->getGrainSize()==0); + + width = std::max(1, width); + + mTask = std::bind(&Filter::boxXImpl, std::placeholders::_1, std::placeholders::_2, width); + this->cook(true); + + mTask = std::bind(&Filter::boxYImpl, std::placeholders::_1, std::placeholders::_2, width); + this->cook(true); + + mTask = std::bind(&Filter::boxZImpl, std::placeholders::_1, std::placeholders::_2, width); + this->cook(true); + + mParent->track(); +} + +template +inline void +LevelSetFilter::Filter::meanCurvature() +{ + mParent->startInterrupter("Mean-curvature flow of level set"); + + mParent->leafs().rebuildAuxBuffers(1, mParent->getGrainSize()==0); + + mTask = std::bind(&Filter::meanCurvatureImpl, std::placeholders::_1, std::placeholders::_2); + this->cook(true); + + mParent->track(); + + mParent->endInterrupter(); +} + +template +inline void +LevelSetFilter::Filter::laplacian() +{ + mParent->startInterrupter("Laplacian flow of level set"); + + mParent->leafs().rebuildAuxBuffers(1, mParent->getGrainSize()==0); + + mTask = std::bind(&Filter::laplacianImpl, std::placeholders::_1, std::placeholders::_2); + this->cook(true); + + mParent->track(); + + mParent->endInterrupter(); +} + +template +inline void +LevelSetFilter::Filter::offset(ValueType value) +{ + mParent->startInterrupter("Offsetting level set"); + + mParent->leafs().removeAuxBuffers();// no auxiliary buffers required + + const ValueType CFL = ValueType(0.5) * mParent->voxelSize(), offset = openvdb::math::Abs(value); + ValueType dist = 0.0; + while (offset-dist > ValueType(0.001)*CFL && mParent->checkInterrupter()) { + const ValueType delta = openvdb::math::Min(offset-dist, CFL); + dist += delta; + + mTask = std::bind(&Filter::offsetImpl, + std::placeholders::_1, std::placeholders::_2, copysign(delta, value)); + this->cook(false); + + mParent->track(); + } + + mParent->endInterrupter(); +} + + +///////////////////////// PRIVATE METHODS ////////////////////// + +/// Performs parabolic mean-curvature diffusion +template +inline void +LevelSetFilter::Filter::meanCurvatureImpl(const LeafRange& range) +{ + mParent->checkInterrupter(); + //const float CFL = 0.9f, dt = CFL * mDx * mDx / 6.0f; + const ValueType dx = mParent->voxelSize(), dt = math::Pow2(dx) / ValueType(3.0); + math::CurvatureStencil stencil(mParent->grid(), dx); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(mParent->grid(), *mMask, mParent->minMask(), + mParent->maxMask(), mParent->isMaskInverted()); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) { + stencil.moveTo(iter); + const ValueType phi0 = *iter, phi1 = phi0 + dt*stencil.meanCurvatureNormGrad(); + buffer[iter.pos()] = b * phi0 + a * phi1; + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + stencil.moveTo(iter); + buffer[iter.pos()] = *iter + dt*stencil.meanCurvatureNormGrad(); + } + } + } +} + +/// Performs Laplacian diffusion. Note if the grids contains a true +/// signed distance field (e.g. a solution to the Eikonal equation) +/// Laplacian diffusions (e.g. geometric heat equation) is actually +/// identical to mean curvature diffusion, yet less computationally +/// expensive! In other words if you're performing renormalization +/// anyway (e.g. rebuilding the narrow-band) you should consider +/// performing Laplacian diffusion over mean curvature flow! +template +inline void +LevelSetFilter::Filter::laplacianImpl(const LeafRange& range) +{ + mParent->checkInterrupter(); + //const float CFL = 0.9f, half_dt = CFL * mDx * mDx / 12.0f; + const ValueType dx = mParent->voxelSize(), dt = math::Pow2(dx) / ValueType(6.0); + math::GradStencil stencil(mParent->grid(), dx); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(mParent->grid(), *mMask, mParent->minMask(), + mParent->maxMask(), mParent->isMaskInverted()); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) { + stencil.moveTo(iter); + const ValueType phi0 = *iter, phi1 = phi0 + dt*stencil.laplacian(); + buffer[iter.pos()] = b * phi0 + a * phi1; + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + stencil.moveTo(iter); + buffer[iter.pos()] = *iter + dt*stencil.laplacian(); + } + } + } +} + +/// Offsets the values by a constant +template +inline void +LevelSetFilter::Filter::offsetImpl( + const LeafRange& range, ValueType offset) +{ + mParent->checkInterrupter(); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(mParent->grid(), *mMask, mParent->minMask(), + mParent->maxMask(), mParent->isMaskInverted()); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + for (VoxelIterT iter = leafIter->beginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) iter.setValue(*iter + a*offset); + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + for (VoxelIterT iter = leafIter->beginValueOn(); iter; ++iter) { + iter.setValue(*iter + offset); + } + } + } +} + +/// Performs simple but slow median-value diffusion +template +inline void +LevelSetFilter::Filter::medianImpl(const LeafRange& range, int width) +{ + mParent->checkInterrupter(); + typename math::DenseStencil stencil(mParent->grid(), width);//creates local cache! + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(mParent->grid(), *mMask, mParent->minMask(), + mParent->maxMask(), mParent->isMaskInverted()); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + if (alpha(iter.getCoord(), a, b)) { + stencil.moveTo(iter); + buffer[iter.pos()] = b * (*iter) + a * stencil.median(); + } + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + stencil.moveTo(iter); + buffer[iter.pos()] = stencil.median(); + } + } + } +} + +/// One dimensional convolution of a separable box filter +template +template +inline void +LevelSetFilter::Filter::boxImpl(const LeafRange& range, Int32 w) +{ + mParent->checkInterrupter(); + AvgT avg(mParent->grid(), w); + if (mMask) { + typename AlphaMaskT::FloatType a, b; + AlphaMaskT alpha(mParent->grid(), *mMask, mParent->minMask(), + mParent->maxMask(), mParent->isMaskInverted()); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + const Coord xyz = iter.getCoord(); + if (alpha(xyz, a, b)) buffer[iter.pos()] = b * (*iter)+ a * avg(xyz); + } + } + } else { + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + ValueType* buffer = leafIter.buffer(1).data(); + for (VoxelCIterT iter = leafIter->cbeginValueOn(); iter; ++iter) { + buffer[iter.pos()] = avg(iter.getCoord()); + } + } + } +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETFILTER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetFracture.h b/openvdb/tools/LevelSetFracture.h new file mode 100644 index 00000000..86ca41ea --- /dev/null +++ b/openvdb/tools/LevelSetFracture.h @@ -0,0 +1,317 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file tools/LevelSetFracture.h +/// +/// @brief Divide volumes represented by level set grids into multiple, +/// disjoint pieces by intersecting them with one or more "cutter" volumes, +/// also represented by level sets. + +#ifndef OPENVDB_TOOLS_LEVELSETFRACTURE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETFRACTURE_HAS_BEEN_INCLUDED + +#include +#include +#include + +#include "Composite.h" // for csgIntersectionCopy() and csgDifferenceCopy() +#include "GridTransformer.h" // for resampleToMatch() +#include "LevelSetUtil.h" // for sdfSegmentation() + +#include // for std::max(), std::min() +#include +#include +#include + +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Level set fracturing +template +class LevelSetFracture +{ +public: + using Vec3sList = std::vector; + using QuatsList = std::vector; + using GridPtrList = std::list; + using GridPtrListIter = typename GridPtrList::iterator; + + + /// @brief Default constructor + /// + /// @param interrupter optional interrupter object + explicit LevelSetFracture(InterruptType* interrupter = nullptr); + + /// @brief Divide volumes represented by level set grids into multiple, + /// disjoint pieces by intersecting them with one or more "cutter" volumes, + /// also represented by level sets. + /// @details If desired, the process can be applied iteratively, so that + /// fragments created with one cutter are subdivided by other cutters. + /// + /// @note The incoming @a grids and the @a cutter are required to have matching + /// transforms and narrow band widths! + /// + /// @param grids list of grids to fracture. The residuals of the + /// fractured grids will remain in this list + /// @param cutter a level set grid to use as the cutter object + /// @param segment toggle to split disjoint fragments into their own grids + /// @param points optional list of world space points at which to instance the + /// cutter object (if null, use the cutter's current position only) + /// @param rotations optional list of custom rotations for each cutter instance + /// @param cutterOverlap toggle to allow consecutive cutter instances to fracture + /// previously generated fragments + void fracture(GridPtrList& grids, const GridType& cutter, bool segment = false, + const Vec3sList* points = nullptr, const QuatsList* rotations = nullptr, + bool cutterOverlap = true); + + /// Return a list of new fragments, not including the residuals from the input grids. + GridPtrList& fragments() { return mFragments; } + + /// Remove all elements from the fragment list. + void clear() { mFragments.clear(); } + +private: + // disallow copy by assignment + void operator=(const LevelSetFracture&) {} + + bool wasInterrupted(int percent = -1) const { + return mInterrupter && mInterrupter->wasInterrupted(percent); + } + + bool isValidFragment(GridType&) const; + void segmentFragments(GridPtrList&) const; + void process(GridPtrList&, const GridType& cutter); + + InterruptType* mInterrupter; + GridPtrList mFragments; +}; + + +//////////////////////////////////////// + + +// Internal utility objects and implementation details + +namespace level_set_fracture_internal { + + +template +struct FindMinMaxVoxelValue { + + using ValueType = typename LeafNodeType::ValueType; + + FindMinMaxVoxelValue(const std::vector& nodes) + : minValue(std::numeric_limits::max()) + , maxValue(-minValue) + , mNodes(nodes.empty() ? nullptr : &nodes.front()) + { + } + + FindMinMaxVoxelValue(FindMinMaxVoxelValue& rhs, tbb::split) + : minValue(std::numeric_limits::max()) + , maxValue(-minValue) + , mNodes(rhs.mNodes) + { + } + + void operator()(const tbb::blocked_range& range) { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + const ValueType* data = mNodes[n]->buffer().data(); + for (Index i = 0; i < LeafNodeType::SIZE; ++i) { + minValue = std::min(minValue, data[i]); + maxValue = std::max(maxValue, data[i]); + } + } + } + + void join(FindMinMaxVoxelValue& rhs) { + minValue = std::min(minValue, rhs.minValue); + maxValue = std::max(maxValue, rhs.maxValue); + } + + ValueType minValue, maxValue; + + LeafNodeType const * const * const mNodes; +}; // struct FindMinMaxVoxelValue + + +} // namespace level_set_fracture_internal + + +//////////////////////////////////////// + + +template +LevelSetFracture::LevelSetFracture(InterruptType* interrupter) + : mInterrupter(interrupter) + , mFragments() +{ +} + + +template +void +LevelSetFracture::fracture(GridPtrList& grids, const GridType& cutter, + bool segmentation, const Vec3sList* points, const QuatsList* rotations, bool cutterOverlap) +{ + // We can process all incoming grids with the same cutter instance, + // this optimization is enabled by the requirement of having matching + // transforms between all incoming grids and the cutter object. + if (points && points->size() != 0) { + + + math::Transform::Ptr originalCutterTransform = cutter.transform().copy(); + GridType cutterGrid(*const_cast(&cutter), ShallowCopy()); + + const bool hasInstanceRotations = + points && rotations && points->size() == rotations->size(); + + // for each instance point.. + for (size_t p = 0, P = points->size(); p < P; ++p) { + int percent = int((float(p) / float(P)) * 100.0); + if (wasInterrupted(percent)) break; + + GridType instCutterGrid; + instCutterGrid.setTransform(originalCutterTransform->copy()); + math::Transform::Ptr xform = originalCutterTransform->copy(); + + if (hasInstanceRotations) { + const Vec3s& rot = (*rotations)[p].eulerAngles(math::XYZ_ROTATION); + xform->preRotate(rot[0], math::X_AXIS); + xform->preRotate(rot[1], math::Y_AXIS); + xform->preRotate(rot[2], math::Z_AXIS); + xform->postTranslate((*points)[p]); + } else { + xform->postTranslate((*points)[p]); + } + + cutterGrid.setTransform(xform); + + // Since there is no scaling, use the generic resampler instead of + // the more expensive level set rebuild tool. + if (mInterrupter != nullptr) { + + if (hasInstanceRotations) { + doResampleToMatch(cutterGrid, instCutterGrid, *mInterrupter); + } else { + doResampleToMatch(cutterGrid, instCutterGrid, *mInterrupter); + } + } else { + util::NullInterrupter interrupter; + if (hasInstanceRotations) { + doResampleToMatch(cutterGrid, instCutterGrid, interrupter); + } else { + doResampleToMatch(cutterGrid, instCutterGrid, interrupter); + } + } + + if (wasInterrupted(percent)) break; + + if (cutterOverlap && !mFragments.empty()) process(mFragments, instCutterGrid); + process(grids, instCutterGrid); + } + + } else { + // use cutter in place + if (cutterOverlap && !mFragments.empty()) process(mFragments, cutter); + process(grids, cutter); + } + + if (segmentation) { + segmentFragments(mFragments); + segmentFragments(grids); + } +} + + +template +bool +LevelSetFracture::isValidFragment(GridType& grid) const +{ + using LeafNodeType = typename GridType::TreeType::LeafNodeType; + + if (grid.tree().leafCount() < 9) { + + std::vector nodes; + grid.tree().getNodes(nodes); + + Index64 activeVoxelCount = 0; + + for (size_t n = 0, N = nodes.size(); n < N; ++n) { + activeVoxelCount += nodes[n]->onVoxelCount(); + } + + if (activeVoxelCount < 27) return false; + + level_set_fracture_internal::FindMinMaxVoxelValue op(nodes); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), op); + + if ((op.minValue < 0) == (op.maxValue < 0)) return false; + } + + return true; +} + + +template +void +LevelSetFracture::segmentFragments(GridPtrList& grids) const +{ + GridPtrList newFragments; + + for (GridPtrListIter it = grids.begin(); it != grids.end(); ++it) { + + std::vector segments; + segmentSDF(*(*it), segments); + + for (size_t n = 0, N = segments.size(); n < N; ++n) { + newFragments.push_back(segments[n]); + } + } + + grids.swap(newFragments); +} + + +template +void +LevelSetFracture::process( + GridPtrList& grids, const GridType& cutter) +{ + using GridPtr = typename GridType::Ptr; + GridPtrList newFragments; + + for (GridPtrListIter it = grids.begin(); it != grids.end(); ++it) { + + if (wasInterrupted()) break; + + GridPtr& grid = *it; + + GridPtr fragment = csgIntersectionCopy(*grid, cutter); + if (!isValidFragment(*fragment)) continue; + + GridPtr residual = csgDifferenceCopy(*grid, cutter); + if (!isValidFragment(*residual)) continue; + + newFragments.push_back(fragment); + + grid->tree().clear(); + grid->tree().merge(residual->tree()); + } + + if (!newFragments.empty()) { + mFragments.splice(mFragments.end(), newFragments); + } +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETFRACTURE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetMeasure.h b/openvdb/tools/LevelSetMeasure.h new file mode 100644 index 00000000..5534e6c6 --- /dev/null +++ b/openvdb/tools/LevelSetMeasure.h @@ -0,0 +1,563 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file LevelSetMeasure.h + +#ifndef OPENVDB_TOOLS_LEVELSETMEASURE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETMEASURE_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include //for Pi +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Return the surface area of a narrow-band level set. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed level set surfaces +/// @param useWorldSpace if true the area is computed in +/// world space units, else in voxel units. +/// +/// @throw TypeError if @a grid is not scalar or not floating-point or not a level set or empty. +template +inline Real +levelSetArea(const GridType& grid, bool useWorldSpace = true); + +/// @brief Return the volume of a narrow-band level set surface. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed level set surfaces +/// @param useWorldSpace if true the volume is computed in +/// world space units, else in voxel units. +/// +/// @throw TypeError if @a grid is not scalar or not floating-point or not a level set or empty. +template +inline Real +levelSetVolume(const GridType& grid, bool useWorldSpace = true); + +/// @brief Return the Euler Characteristics of a narrow-band level set surface (possibly disconnected). +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed level set surfaces +/// +/// @throw TypeError if @a grid is not scalar or not floating-point or not a level set or empty. +template +inline int +levelSetEulerCharacteristic(const GridType& grid); + +/// @brief Return the genus of a narrow-band level set surface. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed level set surfaces +/// @warning The genus is only well defined for a single connected surface +/// +/// @throw TypeError if @a grid is not scalar or not floating-point or not a level set or empty. +template +inline int +levelSetGenus(const GridType& grid); + +//////////////////////////////////////////////////////////////////////////////////////// + +/// @brief Smeared-out and continuous Dirac Delta function. +template +class DiracDelta +{ +public: + // eps is the half-width of the dirac delta function in units of phi + DiracDelta(RealT eps) : mC(0.5/eps), mD(2*boost::math::constants::pi()*mC), mE(eps) {} + // values of the dirac delta function are in units of one over the units of phi + inline RealT operator()(RealT phi) const { return math::Abs(phi) > mE ? 0 : mC*(1+cos(mD*phi)); } +private: + const RealT mC, mD, mE; +};// DiracDelta functor + + +/// @brief Multi-threaded computation of surface area, volume and +/// average mean-curvature for narrow band level sets. +/// +/// @details To reduce the risk of round-off errors (primarily due to +/// catastrophic cancellation) and guarantee determinism during +/// multi-threading this class is implemented using parallel_for, and +/// delayed reduction of a sorted list. +template +class LevelSetMeasure +{ +public: + using GridType = GridT; + using TreeType = typename GridType::TreeType; + using ValueType = typename TreeType::ValueType; + using ManagerType = typename tree::LeafManager; + + static_assert(std::is_floating_point::value, + "level set measure is supported only for scalar, floating-point grids"); + + /// @brief Main constructor from a grid + /// @param grid The level set to be measured. + /// @param interrupt Optional interrupter. + /// @throw RuntimeError if the grid is not a level set or if it's empty. + LevelSetMeasure(const GridType& grid, InterruptT* interrupt = nullptr); + + /// @brief Re-initialize using the specified grid. + /// @param grid The level set to be measured. + /// @throw RuntimeError if the grid is not a level set or if it's empty. + void init(const GridType& grid); + + /// @brief Destructor + virtual ~LevelSetMeasure() {} + + /// @return the grain-size used for multi-threading + int getGrainSize() const { return mGrainSize; } + + /// @brief Set the grain-size used for multi-threading. + /// @note A grain size of 0 or less disables multi-threading! + void setGrainSize(int grainsize) { mGrainSize = grainsize; } + + /// @brief Compute the surface area of the level set. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real area(bool useWorldUnits = true); + + /// @brief Compute the volume of the level set surface. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real volume(bool useWorldUnits = true); + + /// @brief Compute the total mean curvature of the level set surface. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real totMeanCurvature(bool useWorldUnits = true); + + /// @brief Compute the total gaussian curvature of the level set surface. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real totGaussianCurvature(bool useWorldUnits = true); + + /// @brief Compute the average mean curvature of the level set surface. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real avgMeanCurvature(bool useWorldUnits = true) {return this->totMeanCurvature(useWorldUnits) / this->area(useWorldUnits);} + + /// @brief Compute the average gaussian curvature of the level set surface. + /// @param useWorldUnits Specifies if the result is in world or voxel units. + /// @note Performs internal caching so only the initial call incurs actual computation. + Real avgGaussianCurvature(bool useWorldUnits = true) {return this->totGaussianCurvature(useWorldUnits) / this->area(useWorldUnits); } + + /// @brief Compute the Euler characteristic of the level set surface. + /// @note Performs internal caching so only the initial call incurs actual computation. + int eulerCharacteristic(); + + /// @brief Compute the genus of the level set surface. + /// @warning The genus is only well defined for a single connected surface. + /// @note Performs internal caching so only the initial call incurs actual computation. + int genus() { return 1 - this->eulerCharacteristic()/2;} + +private: + + using LeafT = typename TreeType::LeafNodeType; + using VoxelCIterT = typename LeafT::ValueOnCIter; + using LeafRange = typename ManagerType::LeafRange; + using LeafIterT = typename LeafRange::Iterator; + using ManagerPtr = std::unique_ptr; + using BufferPtr = std::unique_ptr; + + // disallow copy construction and copy by assignment! + LevelSetMeasure(const LevelSetMeasure&);// not implemented + LevelSetMeasure& operator=(const LevelSetMeasure&);// not implemented + + const GridType *mGrid; + ManagerPtr mLeafs; + BufferPtr mBuffer; + InterruptT *mInterrupter; + double mDx, mArea, mVolume, mTotMeanCurvature, mTotGausCurvature; + int mGrainSize; + bool mUpdateArea, mUpdateCurvature; + + // @brief Return false if the process was interrupted + bool checkInterrupter(); + + struct MeasureArea + { + MeasureArea(LevelSetMeasure* parent) : mParent(parent), mStencil(*mParent->mGrid) + { + if (parent->mInterrupter) parent->mInterrupter->start("Measuring area and volume of level set"); + if (parent->mGrainSize>0) { + tbb::parallel_for(parent->mLeafs->leafRange(parent->mGrainSize), *this); + } else { + (*this)(parent->mLeafs->leafRange()); + } + tbb::parallel_invoke([&](){parent->mArea = parent->reduce(0);}, + [&](){parent->mVolume = parent->reduce(1)/3.0;}); + parent->mUpdateArea = false; + if (parent->mInterrupter) parent->mInterrupter->end(); + } + MeasureArea(const MeasureArea& other) : mParent(other.mParent), mStencil(*mParent->mGrid) {} + void operator()(const LeafRange& range) const; + LevelSetMeasure* mParent; + mutable math::GradStencil mStencil; + };// MeasureArea + + struct MeasureCurvatures + { + MeasureCurvatures(LevelSetMeasure* parent) : mParent(parent), mStencil(*mParent->mGrid) + { + if (parent->mInterrupter) parent->mInterrupter->start("Measuring curvatures of level set"); + if (parent->mGrainSize>0) { + tbb::parallel_for(parent->mLeafs->leafRange(parent->mGrainSize), *this); + } else { + (*this)(parent->mLeafs->leafRange()); + } + tbb::parallel_invoke([&](){parent->mTotMeanCurvature = parent->reduce(0);}, + [&](){parent->mTotGausCurvature = parent->reduce(1);}); + parent->mUpdateCurvature = false; + if (parent->mInterrupter) parent->mInterrupter->end(); + } + MeasureCurvatures(const MeasureCurvatures& other) : mParent(other.mParent), mStencil(*mParent->mGrid) {} + void operator()(const LeafRange& range) const; + LevelSetMeasure* mParent; + mutable math::CurvatureStencil mStencil; + };// MeasureCurvatures + + double reduce(int offset) + { + double *first = mBuffer.get() + offset*mLeafs->leafCount(), *last = first + mLeafs->leafCount(); + tbb::parallel_sort(first, last);// mitigates catastrophic cancellation + Real sum = 0.0; + while(first != last) sum += *first++; + return sum; + } + +}; // end of LevelSetMeasure class + + +template +inline +LevelSetMeasure::LevelSetMeasure(const GridType& grid, InterruptT* interrupt) + : mInterrupter(interrupt) + , mGrainSize(1) +{ + this->init(grid); +} + +template +inline void +LevelSetMeasure::init(const GridType& grid) +{ + if (!grid.hasUniformVoxels()) { + OPENVDB_THROW(RuntimeError, + "The transform must have uniform scale for the LevelSetMeasure to function"); + } + if (grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_THROW(RuntimeError, + "LevelSetMeasure only supports level sets;" + " try setting the grid class to \"level set\""); + } + if (grid.empty()) { + OPENVDB_THROW(RuntimeError, + "LevelSetMeasure does not support empty grids;"); + } + mGrid = &grid; + mDx = grid.voxelSize()[0]; + mLeafs = std::make_unique(mGrid->tree()); + mBuffer = std::make_unique(2*mLeafs->leafCount()); + mUpdateArea = mUpdateCurvature = true; +} + +template +inline Real +LevelSetMeasure::area(bool useWorldUnits) +{ + if (mUpdateArea) {MeasureArea m(this);}; + double area = mArea; + if (useWorldUnits) area *= math::Pow2(mDx); + return area; +} + +template +inline Real +LevelSetMeasure::volume(bool useWorldUnits) +{ + if (mUpdateArea) {MeasureArea m(this);}; + double volume = mVolume; + if (useWorldUnits) volume *= math::Pow3(mDx) ; + return volume; +} + +template +inline Real +LevelSetMeasure::totMeanCurvature(bool useWorldUnits) +{ + if (mUpdateCurvature) {MeasureCurvatures m(this);}; + return mTotMeanCurvature * (useWorldUnits ? mDx : 1); +} + +template +inline Real +LevelSetMeasure::totGaussianCurvature(bool) +{ + if (mUpdateCurvature) {MeasureCurvatures m(this);}; + return mTotGausCurvature; +} + +template +inline int +LevelSetMeasure::eulerCharacteristic() +{ + const Real x = this->totGaussianCurvature(true) / (2.0*boost::math::constants::pi()); + return int(math::Round( x )); +} + +///////////////////////// PRIVATE METHODS ////////////////////// + +template +inline bool +LevelSetMeasure::checkInterrupter() +{ + if (util::wasInterrupted(mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return false; + } + return true; +} + +template +inline void +LevelSetMeasure:: +MeasureArea::operator()(const LeafRange& range) const +{ + using Vec3T = math::Vec3; + // computations are performed in index space where dV = 1 + mParent->checkInterrupter(); + const Real invDx = 1.0/mParent->mDx; + const DiracDelta DD(1.5);// dirac delta function is 3 voxel units wide + const size_t leafCount = mParent->mLeafs->leafCount(); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + Real sumA = 0, sumV = 0;//reduce risk of catastrophic cancellation + for (VoxelCIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + const Real dd = DD(invDx * (*voxelIter)); + if (dd > 0.0) { + mStencil.moveTo(voxelIter); + const Coord& p = mStencil.getCenterCoord();// in voxel units + const Vec3T g = mStencil.gradient();// in world units + sumA += dd*g.length();// \delta(\phi)*|\nabla\phi| + sumV += dd*(g[0]*Real(p[0]) + g[1]*Real(p[1]) + g[2]*Real(p[2]));// \delta(\phi)\vec{x}\cdot\nabla\phi + } + } + double* ptr = mParent->mBuffer.get() + leafIter.pos(); + *ptr = sumA; + ptr += leafCount; + *ptr = sumV; + } +} + +template +inline void +LevelSetMeasure:: +MeasureCurvatures::operator()(const LeafRange& range) const +{ + using Vec3T = math::Vec3; + // computations are performed in index space where dV = 1 + mParent->checkInterrupter(); + const Real dx = mParent->mDx, dx2=dx*dx, invDx = 1.0/dx; + const DiracDelta DD(1.5);// dirac delta function is 3 voxel units wide + ValueType mean, gauss; + const size_t leafCount = mParent->mLeafs->leafCount(); + for (LeafIterT leafIter=range.begin(); leafIter; ++leafIter) { + Real sumM = 0, sumG = 0;//reduce risk of catastrophic cancellation + for (VoxelCIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + const Real dd = DD(invDx * (*voxelIter)); + if (dd > 0.0) { + mStencil.moveTo(voxelIter); + const Vec3T g = mStencil.gradient(); + const Real dA = dd*g.length();// \delta(\phi)*\delta(\phi) + mStencil.curvatures(mean, gauss); + sumM += dA*mean*dx;// \delta(\phi)*\delta(\phi)*MeanCurvature + sumG += dA*gauss*dx2;// \delta(\phi)*\delta(\phi)*GaussCurvature + } + } + double* ptr = mParent->mBuffer.get() + leafIter.pos(); + *ptr = sumM; + ptr += leafCount; + *ptr = sumG; + } +} + +//////////////////////////////////////// + +//{ +/// @cond OPENVDB_LEVEL_SET_MEASURE_INTERNAL + +template +inline +typename std::enable_if::value, Real>::type +doLevelSetArea(const GridT& grid, bool useWorldUnits) +{ + LevelSetMeasure m(grid); + return m.area(useWorldUnits); +} + +template +inline +typename std::enable_if::value, Real>::type +doLevelSetArea(const GridT&, bool) +{ + OPENVDB_THROW(TypeError, + "level set area is supported only for scalar, floating-point grids"); +} + +/// @endcond +//} + +template +inline Real +levelSetArea(const GridT& grid, bool useWorldUnits) +{ + return doLevelSetArea(grid, useWorldUnits); +} + +//////////////////////////////////////// + +//{ +/// @cond OPENVDB_LEVEL_SET_MEASURE_INTERNAL + +template +inline +typename std::enable_if::value, Real>::type +doLevelSetVolume(const GridT& grid, bool useWorldUnits) +{ + LevelSetMeasure m(grid); + return m.volume(useWorldUnits); +} + +template +inline +typename std::enable_if::value, Real>::type +doLevelSetVolume(const GridT&, bool) +{ + OPENVDB_THROW(TypeError, + "level set volume is supported only for scalar, floating-point grids"); +} + +/// @endcond +//} + +template +inline Real +levelSetVolume(const GridT& grid, bool useWorldUnits) +{ + return doLevelSetVolume(grid, useWorldUnits); +} + +//////////////////////////////////////// + +//{ +/// @cond OPENVDB_LEVEL_SET_MEASURE_INTERNAL + +template +inline +typename std::enable_if::value, int>::type +doLevelSetEulerCharacteristic(const GridT& grid) +{ + LevelSetMeasure m(grid); + return m.eulerCharacteristic(); +} + +template +inline +typename std::enable_if::value, int>::type +doLevelSetEulerCharacteristic(const GridT&) +{ + OPENVDB_THROW(TypeError, + "level set euler characteristic is supported only for scalar, floating-point grids"); +} + +/// @endcond +//} + + +template +inline int +levelSetEulerCharacteristic(const GridT& grid) +{ + return doLevelSetEulerCharacteristic(grid); +} + +//////////////////////////////////////// + +//{ +/// @cond OPENVDB_LEVEL_SET_MEASURE_INTERNAL + +template +inline +typename std::enable_if::value, int>::type +doLevelSetEuler(const GridT& grid) +{ + LevelSetMeasure m(grid); + return m.eulerCharacteristics(); + +} + +template +inline +typename std::enable_if::value, int>::type +doLevelSetGenus(const GridT& grid) +{ + LevelSetMeasure m(grid); + return m.genus(); +} + +template +inline +typename std::enable_if::value, int>::type +doLevelSetGenus(const GridT&) +{ + OPENVDB_THROW(TypeError, + "level set genus is supported only for scalar, floating-point grids"); +} + +/// @endcond +//} + +template +inline int +levelSetGenus(const GridT& grid) +{ + return doLevelSetGenus(grid); +} + +//////////////////////////////////////////////////////////////////////////////////////// + +/// @deprecated Use the @a LevelSetMeasure class instead. +template +OPENVDB_DEPRECATED +inline void +levelSetMeasure(const GridT& grid, Real& area, Real& volume, Real& avgCurvature, + bool useWorldUnits = true) +{ + LevelSetMeasure m(grid); + area = m.area(useWorldUnits); + volume = m.volume(useWorldUnits); + avgCurvature = m.avgMeanCurvature(useWorldUnits); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETMEASURE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetMorph.h b/openvdb/tools/LevelSetMorph.h new file mode 100644 index 00000000..0f7a25d6 --- /dev/null +++ b/openvdb/tools/LevelSetMorph.h @@ -0,0 +1,644 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file tools/LevelSetMorph.h +/// +/// @brief Shape morphology of level sets. Morphing from a source +/// narrow-band level sets to a target narrow-band level set. + +#ifndef OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED + +#include "LevelSetTracker.h" +#include "Interpolation.h" // for BoxSampler, etc. +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Shape morphology of level sets. Morphing from a source +/// narrow-band level sets to a target narrow-band level set. +/// +/// @details +/// The @c InterruptType template argument below refers to any class +/// with the following interface: +/// @code +/// class Interrupter { +/// ... +/// public: +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent=-1) // return true to break computation +/// }; +/// @endcode +/// +/// @note If no template argument is provided for this InterruptType, +/// the util::NullInterrupter is used, which implies that all interrupter +/// calls are no-ops (i.e., they incur no computational overhead). +template +class LevelSetMorphing +{ +public: + using GridType = GridT; + using TreeType = typename GridT::TreeType; + using TrackerT = LevelSetTracker; + using LeafRange = typename TrackerT::LeafRange; + using LeafType = typename TrackerT::LeafType; + using BufferType = typename TrackerT::BufferType; + using ValueType = typename TrackerT::ValueType; + + /// Main constructor + LevelSetMorphing(GridT& sourceGrid, const GridT& targetGrid, InterruptT* interrupt = nullptr) + : mTracker(sourceGrid, interrupt) + , mTarget(&targetGrid) + , mMask(nullptr) + , mSpatialScheme(math::HJWENO5_BIAS) + , mTemporalScheme(math::TVD_RK2) + , mMinMask(0) + , mDeltaMask(1) + , mInvertMask(false) + { + } + + virtual ~LevelSetMorphing() {} + + /// Redefine the target level set + void setTarget(const GridT& targetGrid) { mTarget = &targetGrid; } + + /// Define the alpha mask + void setAlphaMask(const GridT& maskGrid) { mMask = &maskGrid; } + + /// Return the spatial finite-difference scheme + math::BiasedGradientScheme getSpatialScheme() const { return mSpatialScheme; } + /// Set the spatial finite-difference scheme + void setSpatialScheme(math::BiasedGradientScheme scheme) { mSpatialScheme = scheme; } + + /// Return the temporal integration scheme + math::TemporalIntegrationScheme getTemporalScheme() const { return mTemporalScheme; } + /// Set the temporal integration scheme + void setTemporalScheme(math::TemporalIntegrationScheme scheme) { mTemporalScheme = scheme; } + + /// Return the spatial finite-difference scheme + math::BiasedGradientScheme getTrackerSpatialScheme() const + { + return mTracker.getSpatialScheme(); + } + /// Set the spatial finite-difference scheme + void setTrackerSpatialScheme(math::BiasedGradientScheme scheme) + { + mTracker.setSpatialScheme(scheme); + } + /// Return the temporal integration scheme + math::TemporalIntegrationScheme getTrackerTemporalScheme() const + { + return mTracker.getTemporalScheme(); + } + /// Set the temporal integration scheme + void setTrackerTemporalScheme(math::TemporalIntegrationScheme scheme) + { + mTracker.setTemporalScheme(scheme); + } + /// Return the number of normalizations performed per track or normalize call. + int getNormCount() const { return mTracker.getNormCount(); } + /// Set the number of normalizations performed per track or normalize call. + void setNormCount(int n) { mTracker.setNormCount(n); } + + /// Return the grain size used for multithreading + int getGrainSize() const { return mTracker.getGrainSize(); } + /// @brief Set the grain size used for multithreading. + /// @note A grain size of 0 or less disables multithreading! + void setGrainSize(int grainsize) { mTracker.setGrainSize(grainsize); } + + /// @brief Return the minimum value of the mask to be used for the + /// derivation of a smooth alpha value. + ValueType minMask() const { return mMinMask; } + + /// @brief Return the maximum value of the mask to be used for the + /// derivation of a smooth alpha value. + ValueType maxMask() const { return mDeltaMask + mMinMask; } + + /// @brief Define the range for the (optional) scalar mask. + /// @param min Minimum value of the range. + /// @param max Maximum value of the range. + /// @details Mask values outside the range maps to alpha values of + /// respectfully zero and one, and values inside the range maps + /// smoothly to 0->1 (unless of course the mask is inverted). + /// @throw ValueError if @a min is not smaller than @a max. + void setMaskRange(ValueType min, ValueType max) + { + if (!(min < max)) OPENVDB_THROW(ValueError, "Invalid mask range (expects min < max)"); + mMinMask = min; + mDeltaMask = max-min; + } + + /// @brief Return true if the mask is inverted, i.e. min->max in the + /// original mask maps to 1->0 in the inverted alpha mask. + bool isMaskInverted() const { return mInvertMask; } + /// @brief Invert the optional mask, i.e. min->max in the original + /// mask maps to 1->0 in the inverted alpha mask. + void invertMask(bool invert=true) { mInvertMask = invert; } + + /// @brief Advect the level set from its current time, @a time0, to its + /// final time, @a time1. If @a time0 > @a time1, perform backward advection. + /// + /// @return the number of CFL iterations used to advect from @a time0 to @a time1 + size_t advect(ValueType time0, ValueType time1); + +private: + + // disallow copy construction and copy by assignment! + LevelSetMorphing(const LevelSetMorphing&);// not implemented + LevelSetMorphing& operator=(const LevelSetMorphing&);// not implemented + + template + size_t advect1(ValueType time0, ValueType time1); + + template + size_t advect2(ValueType time0, ValueType time1); + + template + size_t advect3(ValueType time0, ValueType time1); + + TrackerT mTracker; + const GridT *mTarget, *mMask; + math::BiasedGradientScheme mSpatialScheme; + math::TemporalIntegrationScheme mTemporalScheme; + ValueType mMinMask, mDeltaMask; + bool mInvertMask; + + // This templated private class implements all the level set magic. + template + struct Morph + { + /// Main constructor + Morph(LevelSetMorphing& parent); + /// Shallow copy constructor called by tbb::parallel_for() threads + Morph(const Morph& other); + /// Shallow copy constructor called by tbb::parallel_reduce() threads + Morph(Morph& other, tbb::split); + /// destructor + virtual ~Morph() {} + /// Advect the level set from its current time, time0, to its final time, time1. + /// @return number of CFL iterations + size_t advect(ValueType time0, ValueType time1); + /// Used internally by tbb::parallel_for() + void operator()(const LeafRange& r) const + { + if (mTask) mTask(const_cast(this), r); + else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly"); + } + /// Used internally by tbb::parallel_reduce() + void operator()(const LeafRange& r) + { + if (mTask) mTask(this, r); + else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly"); + } + /// This is only called by tbb::parallel_reduce() threads + void join(const Morph& other) { mMaxAbsS = math::Max(mMaxAbsS, other.mMaxAbsS); } + + /// Enum to define the type of multithreading + enum ThreadingMode { PARALLEL_FOR, PARALLEL_REDUCE }; // for internal use + // method calling tbb + void cook(ThreadingMode mode, size_t swapBuffer = 0); + + /// Sample field and return the CFT time step + typename GridT::ValueType sampleSpeed(ValueType time0, ValueType time1, Index speedBuffer); + void sampleXformedSpeed(const LeafRange& r, Index speedBuffer); + void sampleAlignedSpeed(const LeafRange& r, Index speedBuffer); + + // Convex combination of Phi and a forward Euler advection steps: + // Phi(result) = alpha * Phi(phi) + (1-alpha) * (Phi(0) - dt * Speed(speed)*|Grad[Phi(0)]|); + template + void euler(const LeafRange&, ValueType, Index, Index, Index); + inline void euler01(const LeafRange& r, ValueType t, Index s) {this->euler<0,1>(r,t,0,1,s);} + inline void euler12(const LeafRange& r, ValueType t) {this->euler<1,2>(r, t, 1, 1, 2);} + inline void euler34(const LeafRange& r, ValueType t) {this->euler<3,4>(r, t, 1, 2, 3);} + inline void euler13(const LeafRange& r, ValueType t) {this->euler<1,3>(r, t, 1, 2, 3);} + + using FuncType = typename std::function; + LevelSetMorphing* mParent; + ValueType mMinAbsS, mMaxAbsS; + const MapT* mMap; + FuncType mTask; + }; // end of private Morph struct + +};//end of LevelSetMorphing + +template +inline size_t +LevelSetMorphing::advect(ValueType time0, ValueType time1) +{ + switch (mSpatialScheme) { + case math::FIRST_BIAS: + return this->advect1(time0, time1); + //case math::SECOND_BIAS: + //return this->advect1(time0, time1); + //case math::THIRD_BIAS: + //return this->advect1(time0, time1); + //case math::WENO5_BIAS: + //return this->advect1(time0, time1); + case math::HJWENO5_BIAS: + return this->advect1(time0, time1); + case math::SECOND_BIAS: + case math::THIRD_BIAS: + case math::WENO5_BIAS: + case math::UNKNOWN_BIAS: + default: + OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!"); + } + return 0; +} + +template +template +inline size_t +LevelSetMorphing::advect1(ValueType time0, ValueType time1) +{ + switch (mTemporalScheme) { + case math::TVD_RK1: + return this->advect2(time0, time1); + case math::TVD_RK2: + return this->advect2(time0, time1); + case math::TVD_RK3: + return this->advect2(time0, time1); + case math::UNKNOWN_TIS: + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + } + return 0; +} + +template +template +inline size_t +LevelSetMorphing::advect2(ValueType time0, ValueType time1) +{ + const math::Transform& trans = mTracker.grid().transform(); + if (trans.mapType() == math::UniformScaleMap::mapType()) { + return this->advect3(time0, time1); + } else if (trans.mapType() == math::UniformScaleTranslateMap::mapType()) { + return this->advect3( + time0, time1); + } else if (trans.mapType() == math::UnitaryMap::mapType()) { + return this->advect3(time0, time1); + } else if (trans.mapType() == math::TranslationMap::mapType()) { + return this->advect3(time0, time1); + } else { + OPENVDB_THROW(ValueError, "MapType not supported!"); + } + return 0; +} + +template +template +inline size_t +LevelSetMorphing::advect3(ValueType time0, ValueType time1) +{ + Morph tmp(*this); + return tmp.advect(time0, time1); +} + + +/////////////////////////////////////////////////////////////////////// + +template +template +inline +LevelSetMorphing:: +Morph:: +Morph(LevelSetMorphing& parent) + : mParent(&parent) + , mMinAbsS(ValueType(1e-6)) + , mMap(parent.mTracker.grid().transform().template constMap().get()) + , mTask(nullptr) +{ +} + +template +template +inline +LevelSetMorphing:: +Morph:: +Morph(const Morph& other) + : mParent(other.mParent) + , mMinAbsS(other.mMinAbsS) + , mMaxAbsS(other.mMaxAbsS) + , mMap(other.mMap) + , mTask(other.mTask) +{ +} + +template +template +inline +LevelSetMorphing:: +Morph:: +Morph(Morph& other, tbb::split) + : mParent(other.mParent) + , mMinAbsS(other.mMinAbsS) + , mMaxAbsS(other.mMaxAbsS) + , mMap(other.mMap) + , mTask(other.mTask) +{ +} + +template +template +inline size_t +LevelSetMorphing:: +Morph:: +advect(ValueType time0, ValueType time1) +{ + namespace ph = std::placeholders; + + // Make sure we have enough temporal auxiliary buffers for the time + // integration AS WELL AS an extra buffer with the speed function! + static const Index auxBuffers = 1 + (TemporalScheme == math::TVD_RK3 ? 2 : 1); + size_t countCFL = 0; + while (time0 < time1 && mParent->mTracker.checkInterrupter()) { + mParent->mTracker.leafs().rebuildAuxBuffers(auxBuffers); + + const ValueType dt = this->sampleSpeed(time0, time1, auxBuffers); + if ( math::isZero(dt) ) break;//V is essentially zero so terminate + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN //switch is resolved at compile-time + switch(TemporalScheme) { + case math::TVD_RK1: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * Speed(2) * |Grad[Phi(0)]| + mTask = std::bind(&Morph::euler01, ph::_1, ph::_2, dt, /*speed*/2); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook(PARALLEL_FOR, 1); + break; + case math::TVD_RK2: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * Speed(2) * |Grad[Phi(0)]| + mTask = std::bind(&Morph::euler01, ph::_1, ph::_2, dt, /*speed*/2); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook(PARALLEL_FOR, 1); + + // Convex combine explict Euler step: t2 = t0 + dt + // Phi_t2(1) = 1/2 * Phi_t0(1) + 1/2 * (Phi_t1(0) - dt * Speed(2) * |Grad[Phi(0)]|) + mTask = std::bind(&Morph::euler12, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 1 such that Phi_t2(0) and Phi_t1(1) + this->cook(PARALLEL_FOR, 1); + break; + case math::TVD_RK3: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * Speed(3) * |Grad[Phi(0)]| + mTask = std::bind(&Morph::euler01, ph::_1, ph::_2, dt, /*speed*/3); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook(PARALLEL_FOR, 1); + + // Convex combine explict Euler step: t2 = t0 + dt/2 + // Phi_t2(2) = 3/4 * Phi_t0(1) + 1/4 * (Phi_t1(0) - dt * Speed(3) * |Grad[Phi(0)]|) + mTask = std::bind(&Morph::euler34, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 2 such that Phi_t2(0) and Phi_t1(2) + this->cook(PARALLEL_FOR, 2); + + // Convex combine explict Euler step: t3 = t0 + dt + // Phi_t3(2) = 1/3 * Phi_t0(1) + 2/3 * (Phi_t2(0) - dt * Speed(3) * |Grad[Phi(0)]|) + mTask = std::bind(&Morph::euler13, ph::_1, ph::_2, dt); + + // Cook and swap buffer 0 and 2 such that Phi_t3(0) and Phi_t2(2) + this->cook(PARALLEL_FOR, 2); + break; + case math::UNKNOWN_TIS: + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + }//end of compile-time resolved switch + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + + time0 += dt; + ++countCFL; + mParent->mTracker.leafs().removeAuxBuffers(); + + // Track the narrow band + mParent->mTracker.track(); + }//end wile-loop over time + + return countCFL;//number of CLF propagation steps +} + +template +template +inline typename GridT::ValueType +LevelSetMorphing:: +Morph:: +sampleSpeed(ValueType time0, ValueType time1, Index speedBuffer) +{ + namespace ph = std::placeholders; + + mMaxAbsS = mMinAbsS; + const size_t leafCount = mParent->mTracker.leafs().leafCount(); + if (leafCount==0 || time0 >= time1) return ValueType(0); + + const math::Transform& xform = mParent->mTracker.grid().transform(); + if (mParent->mTarget->transform() == xform && + (mParent->mMask == nullptr || mParent->mMask->transform() == xform)) { + mTask = std::bind(&Morph::sampleAlignedSpeed, ph::_1, ph::_2, speedBuffer); + } else { + mTask = std::bind(&Morph::sampleXformedSpeed, ph::_1, ph::_2, speedBuffer); + } + this->cook(PARALLEL_REDUCE); + if (math::isApproxEqual(mMinAbsS, mMaxAbsS)) return ValueType(0);//speed is essentially zero + static const ValueType CFL = (TemporalScheme == math::TVD_RK1 ? ValueType(0.3) : + TemporalScheme == math::TVD_RK2 ? ValueType(0.9) : + ValueType(1.0))/math::Sqrt(ValueType(3.0)); + const ValueType dt = math::Abs(time1 - time0), dx = mParent->mTracker.voxelSize(); + return math::Min(dt, ValueType(CFL*dx/mMaxAbsS)); +} + +template +template +inline void +LevelSetMorphing:: +Morph:: +sampleXformedSpeed(const LeafRange& range, Index speedBuffer) +{ + using VoxelIterT = typename LeafType::ValueOnCIter; + using SamplerT = tools::GridSampler; + + const MapT& map = *mMap; + mParent->mTracker.checkInterrupter(); + + typename GridT::ConstAccessor targetAcc = mParent->mTarget->getAccessor(); + SamplerT target(targetAcc, mParent->mTarget->transform()); + if (mParent->mMask == nullptr) { + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueType* speed = leafIter.buffer(speedBuffer).data(); + bool isZero = true; + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + ValueType& s = speed[voxelIter.pos()]; + s -= target.wsSample(map.applyMap(voxelIter.getCoord().asVec3d())); + if (!math::isApproxZero(s)) isZero = false; + mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s)); + } + if (isZero) speed[0] = std::numeric_limits::max();//tag first voxel + } + } else { + const ValueType min = mParent->mMinMask, invNorm = 1.0f/(mParent->mDeltaMask); + const bool invMask = mParent->isMaskInverted(); + typename GridT::ConstAccessor maskAcc = mParent->mMask->getAccessor(); + SamplerT mask(maskAcc, mParent->mMask->transform()); + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueType* speed = leafIter.buffer(speedBuffer).data(); + bool isZero = true; + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + const Vec3R xyz = map.applyMap(voxelIter.getCoord().asVec3d());//world space + const ValueType a = math::SmoothUnitStep((mask.wsSample(xyz)-min)*invNorm); + ValueType& s = speed[voxelIter.pos()]; + s -= target.wsSample(xyz); + s *= invMask ? 1 - a : a; + if (!math::isApproxZero(s)) isZero = false; + mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s)); + } + if (isZero) speed[0] = std::numeric_limits::max();//tag first voxel + } + } +} + +template +template +inline void +LevelSetMorphing:: +Morph:: +sampleAlignedSpeed(const LeafRange& range, Index speedBuffer) +{ + using VoxelIterT = typename LeafType::ValueOnCIter; + + mParent->mTracker.checkInterrupter(); + + typename GridT::ConstAccessor target = mParent->mTarget->getAccessor(); + + if (mParent->mMask == nullptr) { + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueType* speed = leafIter.buffer(speedBuffer).data(); + bool isZero = true; + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + ValueType& s = speed[voxelIter.pos()]; + s -= target.getValue(voxelIter.getCoord()); + if (!math::isApproxZero(s)) isZero = false; + mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s)); + } + if (isZero) speed[0] = std::numeric_limits::max();//tag first voxel + } + } else { + const ValueType min = mParent->mMinMask, invNorm = 1.0f/(mParent->mDeltaMask); + const bool invMask = mParent->isMaskInverted(); + typename GridT::ConstAccessor mask = mParent->mMask->getAccessor(); + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueType* speed = leafIter.buffer(speedBuffer).data(); + bool isZero = true; + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + const Coord ijk = voxelIter.getCoord();//index space + const ValueType a = math::SmoothUnitStep((mask.getValue(ijk)-min)*invNorm); + ValueType& s = speed[voxelIter.pos()]; + s -= target.getValue(ijk); + s *= invMask ? 1 - a : a; + if (!math::isApproxZero(s)) isZero = false; + mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s)); + } + if (isZero) speed[0] = std::numeric_limits::max();//tag first voxel + } + } +} + +template +template +inline void +LevelSetMorphing:: +Morph:: +cook(ThreadingMode mode, size_t swapBuffer) +{ + mParent->mTracker.startInterrupter("Morphing level set"); + + const int grainSize = mParent->mTracker.getGrainSize(); + const LeafRange range = mParent->mTracker.leafs().leafRange(grainSize); + + if (mParent->mTracker.getGrainSize()==0) { + (*this)(range); + } else if (mode == PARALLEL_FOR) { + tbb::parallel_for(range, *this); + } else if (mode == PARALLEL_REDUCE) { + tbb::parallel_reduce(range, *this); + } else { + OPENVDB_THROW(ValueError, "expected threading mode " << int(PARALLEL_FOR) + << " or " << int(PARALLEL_REDUCE) << ", got " << int(mode)); + } + + mParent->mTracker.leafs().swapLeafBuffer(swapBuffer, grainSize == 0); + + mParent->mTracker.endInterrupter(); +} + +template +template +template +inline void +LevelSetMorphing:: +Morph:: +euler(const LeafRange& range, ValueType dt, + Index phiBuffer, Index resultBuffer, Index speedBuffer) +{ + using SchemeT = math::BIAS_SCHEME; + using StencilT = typename SchemeT::template ISStencil::StencilType; + using VoxelIterT = typename LeafType::ValueOnCIter; + using NumGrad = math::GradientNormSqrd; + + static const ValueType Alpha = ValueType(Nominator)/ValueType(Denominator); + static const ValueType Beta = ValueType(1) - Alpha; + + mParent->mTracker.checkInterrupter(); + const MapT& map = *mMap; + StencilT stencil(mParent->mTracker.grid()); + + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + const ValueType* speed = leafIter.buffer(speedBuffer).data(); + if (math::isExactlyEqual(speed[0], std::numeric_limits::max())) continue; + const ValueType* phi = leafIter.buffer(phiBuffer).data(); + ValueType* result = leafIter.buffer(resultBuffer).data(); + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + const Index n = voxelIter.pos(); + if (math::isApproxZero(speed[n])) continue; + stencil.moveTo(voxelIter); + const ValueType v = stencil.getValue() - dt * speed[n] * NumGrad::result(map, stencil); + result[n] = Nominator ? Alpha * phi[n] + Beta * v : v; + }//loop over active voxels in the leaf of the mask + }//loop over leafs of the level set +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetPlatonic.h b/openvdb/tools/LevelSetPlatonic.h new file mode 100644 index 00000000..1f801b99 --- /dev/null +++ b/openvdb/tools/LevelSetPlatonic.h @@ -0,0 +1,478 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file LevelSetPlatonic.h +/// +/// @brief Generate a narrow-band level sets of the five platonic solids. +/// +/// @note By definition a level set has a fixed narrow band width +/// (the half width is defined by LEVEL_SET_HALF_WIDTH in Types.h), +/// whereas an SDF can have a variable narrow band width. + +#ifndef OPENVDB_TOOLS_LEVELSETPLATONIC_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETPLATONIC_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a platonic solid. +/// +/// @param faceCount number of faces of the platonic solid, i.e. 4, 6, 8, 12 or 20 +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @details Faces: TETRAHEDRON=4, CUBE=6, OCTAHEDRON=8, DODECAHEDRON=12, ICOSAHEDRON=20 +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetPlatonic( + int faceCount, // 4, 6, 8, 12 or 20 + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr); + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a platonic solid. +/// +/// @param faceCount number of faces of the platonic solid, i.e. 4, 6, 8, 12 or 20 +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @details Faces: TETRAHEDRON=4, CUBE=6, OCTAHEDRON=8, DODECAHEDRON=12, ICOSAHEDRON=20 +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetPlatonic( + int faceCount,// 4, 6, 8, 12 or 20 + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(faceCount, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a tetrahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetTetrahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr) +{ + return createLevelSetPlatonic( + 4, scale, center, voxelSize, halfWidth, interrupt); +} + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a tetrahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetTetrahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(4, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a cube. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetCube( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr) +{ + return createLevelSetPlatonic(6, scale, center, voxelSize, halfWidth, interrupt); +} + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a cube. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetCube( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(6, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of an octahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetOctahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr) +{ + return createLevelSetPlatonic(8, scale, center, voxelSize, halfWidth, interrupt); +} + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of an octahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetOctahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(8, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a dodecahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetDodecahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr) +{ + return createLevelSetPlatonic(12, scale, center, voxelSize, halfWidth, interrupt); +} + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a dodecahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetDodecahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(12, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of an icosahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetIcosahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr) +{ + return createLevelSetPlatonic(20, scale, center, voxelSize, halfWidth, interrupt); +} + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of an icosahedron. +/// +/// @param scale scale of the platonic solid in world units +/// @param center center of the platonic solid in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +template +typename GridType::Ptr +createLevelSetIcosahedron( + float scale = 1.0f, + const Vec3f& center = Vec3f(0.0f), + float voxelSize = 0.1f, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)) +{ + util::NullInterrupter tmp; + return createLevelSetPlatonic(20, scale, center, voxelSize, halfWidth, &tmp); +} + +//////////////////////////////////////////////////////////////////////////////// + +template +typename GridType::Ptr +createLevelSetPlatonic(int faceCount,float scale, const Vec3f& center, + float voxelSize, float halfWidth, InterruptT *interrupt) +{ + // GridType::ValueType is required to be a floating-point scalar. + static_assert(std::is_floating_point::value, + "level set grids must have scalar, floating-point value types"); + + const math::Transform::Ptr xform = math::Transform::createLinearTransform( voxelSize ); + + std::vector vtx; + std::vector tri; + std::vector qua; + + if (faceCount == 4) {// Tetrahedron + + vtx.push_back( Vec3f( 0.0f, 1.0f, 0.0f) ); + vtx.push_back( Vec3f(-0.942810297f, -0.333329707f, 0.0f) ); + vtx.push_back( Vec3f( 0.471405149f, -0.333329707f, 0.816497624f) ); + vtx.push_back( Vec3f( 0.471405149f, -0.333329707f, -0.816497624f) ); + + tri.push_back( Vec3I(0, 2, 3) ); + tri.push_back( Vec3I(0, 3, 1) ); + tri.push_back( Vec3I(0, 1, 2) ); + tri.push_back( Vec3I(1, 3, 2) ); + + } else if (faceCount == 6) {// Cube + + vtx.push_back( Vec3f(-0.5f, -0.5f, -0.5f) ); + vtx.push_back( Vec3f( 0.5f, -0.5f, -0.5f) ); + vtx.push_back( Vec3f( 0.5f, -0.5f, 0.5f) ); + vtx.push_back( Vec3f(-0.5f, -0.5f, 0.5f) ); + vtx.push_back( Vec3f(-0.5f, 0.5f, -0.5f) ); + vtx.push_back( Vec3f( 0.5f, 0.5f, -0.5f) ); + vtx.push_back( Vec3f( 0.5f, 0.5f, 0.5f) ); + vtx.push_back( Vec3f(-0.5f, 0.5f, 0.5f) ); + + qua.push_back( Vec4I(1, 0, 4, 5) ); + qua.push_back( Vec4I(2, 1, 5, 6) ); + qua.push_back( Vec4I(3, 2, 6, 7) ); + qua.push_back( Vec4I(0, 3, 7, 4) ); + qua.push_back( Vec4I(2, 3, 0, 1) ); + qua.push_back( Vec4I(5, 4, 7, 6) ); + + } else if (faceCount == 8) {// Octahedron + + vtx.push_back( Vec3f( 0.0f, 0.0f, -1.0f) ); + vtx.push_back( Vec3f( 1.0f, 0.0f, 0.0f) ); + vtx.push_back( Vec3f( 0.0f, 0.0f, 1.0f) ); + vtx.push_back( Vec3f(-1.0f, 0.0f, 0.0f) ); + vtx.push_back( Vec3f( 0.0f,-1.0f, 0.0f) ); + vtx.push_back( Vec3f( 0.0f, 1.0f, 0.0f) ); + + tri.push_back( Vec3I(0, 4, 3) ); + tri.push_back( Vec3I(0, 1, 4) ); + tri.push_back( Vec3I(1, 2, 4) ); + tri.push_back( Vec3I(2, 3, 4) ); + tri.push_back( Vec3I(0, 3, 5) ); + tri.push_back( Vec3I(0, 5, 1) ); + tri.push_back( Vec3I(1, 5, 2) ); + tri.push_back( Vec3I(2, 5, 3) ); + + } else if (faceCount == 12) {// Dodecahedron + + vtx.push_back( Vec3f( 0.354437858f, 0.487842113f, -0.789344311f) ); + vtx.push_back( Vec3f( 0.573492587f, -0.186338872f, -0.78934437f) ); + vtx.push_back( Vec3f( 0.0f, -0.603005826f, -0.78934443f) ); + vtx.push_back( Vec3f(-0.573492587f, -0.186338872f, -0.78934437f) ); + vtx.push_back( Vec3f(-0.354437858f, 0.487842113f, -0.789344311f) ); + vtx.push_back( Vec3f(-0.573492587f, 0.789345026f, -0.186338797f) ); + vtx.push_back( Vec3f(-0.927930415f, -0.301502913f, -0.186338872f) ); + vtx.push_back( Vec3f( 0.0f, -0.975683928f, -0.186338902f) ); + vtx.push_back( Vec3f( 0.927930415f, -0.301502913f, -0.186338872f) ); + vtx.push_back( Vec3f( 0.573492587f, 0.789345026f, -0.186338797f) ); + vtx.push_back( Vec3f( 0.0f, 0.975683868f, 0.186338902f) ); + vtx.push_back( Vec3f(-0.927930415f, 0.301502913f, 0.186338872f) ); + vtx.push_back( Vec3f(-0.573492587f, -0.789345026f, 0.186338797f) ); + vtx.push_back( Vec3f( 0.573492587f, -0.789345026f, 0.186338797f) ); + vtx.push_back( Vec3f( 0.927930415f, 0.301502913f, 0.186338872f) ); + vtx.push_back( Vec3f( 0.0f, 0.603005826f, 0.78934443f) ); + vtx.push_back( Vec3f( 0.573492587f, 0.186338872f, 0.78934437f) ); + vtx.push_back( Vec3f( 0.354437858f, -0.487842113f, 0.789344311f) ); + vtx.push_back( Vec3f(-0.354437858f, -0.487842113f, 0.789344311f) ); + vtx.push_back( Vec3f(-0.573492587f, 0.186338872f, 0.78934437f) ); + + qua.push_back( Vec4I(0, 1, 2, 3) ); + tri.push_back( Vec3I(0, 3, 4) ); + qua.push_back( Vec4I(0, 4, 5, 10) ); + tri.push_back( Vec3I(0, 10, 9) ); + qua.push_back( Vec4I(0, 9, 14, 8) ); + tri.push_back( Vec3I(0, 8, 1) ); + qua.push_back( Vec4I(1, 8, 13, 7) ); + tri.push_back( Vec3I(1, 7, 2) ); + qua.push_back( Vec4I(2, 7, 12, 6) ); + tri.push_back( Vec3I(2, 6, 3) ); + qua.push_back( Vec4I(3, 6, 11, 5) ); + tri.push_back( Vec3I(3, 5, 4) ); + qua.push_back( Vec4I(5, 11, 19, 15) ); + tri.push_back( Vec3I(5, 15, 10) ); + qua.push_back( Vec4I(6, 12, 18, 19) ); + tri.push_back( Vec3I(6, 19, 11) ); + qua.push_back( Vec4I(7, 13, 17, 18) ); + tri.push_back( Vec3I(7, 18, 12) ); + qua.push_back( Vec4I(8, 14, 16, 17) ); + tri.push_back( Vec3I(8, 17, 13) ); + qua.push_back( Vec4I(9, 10, 15, 16) ); + tri.push_back( Vec3I(9, 16, 14) ); + qua.push_back( Vec4I(15, 19, 18, 17) ); + tri.push_back( Vec3I(15, 17, 16) ); + + } else if (faceCount == 20) {// Icosahedron + + vtx.push_back( Vec3f(0.0f, 0.0f, -1.0f) ); + vtx.push_back( Vec3f(0.0f, 0.894427359f, -0.447213143f) ); + vtx.push_back( Vec3f(0.850650847f, 0.276393682f, -0.447213203f) ); + vtx.push_back( Vec3f(0.525731206f, -0.723606944f, -0.447213262f) ); + vtx.push_back( Vec3f(-0.525731206f, -0.723606944f, -0.447213262f) ); + vtx.push_back( Vec3f(-0.850650847f, 0.276393682f, -0.447213203f) ); + vtx.push_back( Vec3f(-0.525731206f, 0.723606944f, 0.447213262f) ); + vtx.push_back( Vec3f(-0.850650847f, -0.276393682f, 0.447213203f) ); + vtx.push_back( Vec3f(0.0f, -0.894427359f, 0.447213143f) ); + vtx.push_back( Vec3f(0.850650847f, -0.276393682f, 0.447213203f) ); + vtx.push_back( Vec3f(0.525731206f, 0.723606944f, 0.447213262f) ); + vtx.push_back( Vec3f(0.0f, 0.0f, 1.0f) ); + + tri.push_back( Vec3I( 2, 0, 1) ); + tri.push_back( Vec3I( 3, 0, 2) ); + tri.push_back( Vec3I( 4, 0, 3) ); + tri.push_back( Vec3I( 5, 0, 4) ); + tri.push_back( Vec3I( 1, 0, 5) ); + tri.push_back( Vec3I( 6, 1, 5) ); + tri.push_back( Vec3I( 7, 5, 4) ); + tri.push_back( Vec3I( 8, 4, 3) ); + tri.push_back( Vec3I( 9, 3, 2) ); + tri.push_back( Vec3I(10, 2, 1) ); + tri.push_back( Vec3I(10, 1, 6) ); + tri.push_back( Vec3I( 6, 5, 7) ); + tri.push_back( Vec3I( 7, 4, 8) ); + tri.push_back( Vec3I( 8, 3, 9) ); + tri.push_back( Vec3I( 9, 2, 10) ); + tri.push_back( Vec3I( 6, 11, 10) ); + tri.push_back( Vec3I(10, 11, 9) ); + tri.push_back( Vec3I( 9, 11, 8) ); + tri.push_back( Vec3I( 8, 11, 7) ); + tri.push_back( Vec3I( 7, 11, 6) ); + + } else { + OPENVDB_THROW(RuntimeError, "Invalid face count"); + } + + // Apply scale and translation to all the vertices + for ( size_t i = 0; i(tmp, *xform, vtx, tri, qua, halfWidth); + } else { + grid = meshToLevelSet(*interrupt, *xform, vtx, tri, qua, halfWidth); + } + + return grid; +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETPLATONIC_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetRebuild.h b/openvdb/tools/LevelSetRebuild.h new file mode 100644 index 00000000..520c8b1e --- /dev/null +++ b/openvdb/tools/LevelSetRebuild.h @@ -0,0 +1,327 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TOOLS_LEVELSETREBUILD_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETREBUILD_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +/// @brief Return a new grid of type @c GridType that contains a narrow-band level set +/// representation of an isosurface of a given grid. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed isosurfaces at the given @a isovalue +/// @param isovalue the isovalue that defines the implicit surface (defaults to zero, +/// which is typical if the input grid is already a level set or a SDF). +/// @param halfWidth half the width of the narrow band, in voxel units +/// (defaults to 3 voxels, which is required for some level set operations) +/// @param xform optional transform for the output grid +/// (if not provided, the transform of the input @a grid will be matched) +/// +/// @throw TypeError if @a grid is not scalar or not floating-point +/// +/// @note If the input grid contains overlapping isosurfaces, interior edges will be lost. +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float isovalue = 0, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), const math::Transform* xform = nullptr); + + +/// @brief Return a new grid of type @c GridType that contains a narrow-band level set +/// representation of an isosurface of a given grid. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed isosurfaces at the given @a isovalue +/// @param isovalue the isovalue that defines the implicit surface +/// @param exBandWidth the exterior narrow-band width in voxel units +/// @param inBandWidth the interior narrow-band width in voxel units +/// @param xform optional transform for the output grid +/// (if not provided, the transform of the input @a grid will be matched) +/// +/// @throw TypeError if @a grid is not scalar or not floating-point +/// +/// @note If the input grid contains overlapping isosurfaces, interior edges will be lost. +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float isovalue, float exBandWidth, float inBandWidth, + const math::Transform* xform = nullptr); + + +/// @brief Return a new grid of type @c GridType that contains a narrow-band level set +/// representation of an isosurface of a given grid. +/// +/// @param grid a scalar, floating-point grid with one or more disjoint, +/// closed isosurfaces at the given @a isovalue +/// @param isovalue the isovalue that defines the implicit surface +/// @param exBandWidth the exterior narrow-band width in voxel units +/// @param inBandWidth the interior narrow-band width in voxel units +/// @param xform optional transform for the output grid +/// (if not provided, the transform of the input @a grid will be matched) +/// @param interrupter optional interrupter object +/// +/// @throw TypeError if @a grid is not scalar or not floating-point +/// +/// @note If the input grid contains overlapping isosurfaces, interior edges will be lost. +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float isovalue, float exBandWidth, float inBandWidth, + const math::Transform* xform = nullptr, InterruptT* interrupter = nullptr); + + +//////////////////////////////////////// + + +// Internal utility objects and implementation details + +namespace internal { + +class PointListTransform +{ +public: + PointListTransform(const PointList& pointsIn, std::vector& pointsOut, + const math::Transform& xform) + : mPointsIn(pointsIn) + , mPointsOut(&pointsOut) + , mXform(xform) + { + } + + void runParallel() + { + tbb::parallel_for(tbb::blocked_range(0, mPointsOut->size()), *this); + } + + void runSerial() + { + (*this)(tbb::blocked_range(0, mPointsOut->size())); + } + + inline void operator()(const tbb::blocked_range& range) const + { + for (size_t n = range.begin(); n < range.end(); ++n) { + (*mPointsOut)[n] = Vec3s(mXform.worldToIndex(mPointsIn[n])); + } + } + +private: + const PointList& mPointsIn; + std::vector * const mPointsOut; + const math::Transform& mXform; +}; + + +class PrimCpy +{ +public: + PrimCpy(const PolygonPoolList& primsIn, const std::vector& indexList, + std::vector& primsOut) + : mPrimsIn(primsIn) + , mIndexList(indexList) + , mPrimsOut(&primsOut) + { + } + + void runParallel() + { + tbb::parallel_for(tbb::blocked_range(0, mIndexList.size()), *this); + } + + void runSerial() + { + (*this)(tbb::blocked_range(0, mIndexList.size())); + } + + inline void operator()(const tbb::blocked_range& range) const + { + openvdb::Vec4I quad; + quad[3] = openvdb::util::INVALID_IDX; + std::vector& primsOut = *mPrimsOut; + + for (size_t n = range.begin(); n < range.end(); ++n) { + size_t index = mIndexList[n]; + PolygonPool& polygons = mPrimsIn[n]; + + // Copy quads + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + primsOut[index++] = polygons.quad(i); + } + polygons.clearQuads(); + + // Copy triangles (adaptive mesh) + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + const openvdb::Vec3I& triangle = polygons.triangle(i); + quad[0] = triangle[0]; + quad[1] = triangle[1]; + quad[2] = triangle[2]; + primsOut[index++] = quad; + } + + polygons.clearTriangles(); + } + } + +private: + const PolygonPoolList& mPrimsIn; + const std::vector& mIndexList; + std::vector * const mPrimsOut; +}; + +} // namespace internal + + +//////////////////////////////////////// + + +//{ +/// @cond OPENVDB_LEVEL_SET_REBUILD_INTERNAL + +/// The normal entry points for level set rebuild are the levelSetRebuild() functions. +/// doLevelSetRebuild() is mainly for internal use, but when the isovalue and half band +/// widths are given in ValueType units (for example, if they are queried from +/// a grid), it might be more convenient to call this function directly. +/// +/// @internal This overload is enabled only for grids with a scalar, floating-point ValueType. +template +inline typename std::enable_if< + std::is_floating_point::value, typename GridType::Ptr>::type +doLevelSetRebuild(const GridType& grid, typename GridType::ValueType iso, + typename GridType::ValueType exWidth, typename GridType::ValueType inWidth, + const math::Transform* xform, InterruptT* interrupter) +{ + const float + isovalue = float(iso), + exBandWidth = float(exWidth), + inBandWidth = float(inWidth); + + tools::VolumeToMesh mesher(isovalue); + mesher(grid); + + math::Transform::Ptr transform = (xform != nullptr) ? xform->copy() : grid.transform().copy(); + + std::vector points(mesher.pointListSize()); + + { // Copy and transform (required for MeshToVolume) points to grid space. + internal::PointListTransform ptnXForm(mesher.pointList(), points, *transform); + ptnXForm.runParallel(); + mesher.pointList().reset(nullptr); + } + + std::vector primitives; + + { // Copy primitives. + PolygonPoolList& polygonPoolList = mesher.polygonPoolList(); + + size_t numPrimitives = 0; + std::vector indexlist(mesher.polygonPoolListSize()); + + for (size_t n = 0, N = mesher.polygonPoolListSize(); n < N; ++n) { + const openvdb::tools::PolygonPool& polygons = polygonPoolList[n]; + indexlist[n] = numPrimitives; + numPrimitives += polygons.numQuads(); + numPrimitives += polygons.numTriangles(); + } + + primitives.resize(numPrimitives); + internal::PrimCpy primCpy(polygonPoolList, indexlist, primitives); + primCpy.runParallel(); + } + + QuadAndTriangleDataAdapter mesh(points, primitives); + + if (interrupter) { + return meshToVolume(*interrupter, mesh, *transform, exBandWidth, inBandWidth, + DISABLE_RENORMALIZATION, nullptr); + } + + return meshToVolume(mesh, *transform, exBandWidth, inBandWidth, + DISABLE_RENORMALIZATION, nullptr); +} + + +/// @internal This overload is enabled only for grids that do not have a scalar, +/// floating-point ValueType. +template +inline typename std::enable_if< + !std::is_floating_point::value, typename GridType::Ptr>::type +doLevelSetRebuild(const GridType&, typename GridType::ValueType /*isovalue*/, + typename GridType::ValueType /*exWidth*/, typename GridType::ValueType /*inWidth*/, + const math::Transform*, InterruptT*) +{ + OPENVDB_THROW(TypeError, + "level set rebuild is supported only for scalar, floating-point grids"); +} + +/// @endcond +//} + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float iso, float exWidth, float inWidth, + const math::Transform* xform, InterruptT* interrupter) +{ + using ValueT = typename GridType::ValueType; + ValueT + isovalue(zeroVal() + ValueT(iso)), + exBandWidth(zeroVal() + ValueT(exWidth)), + inBandWidth(zeroVal() + ValueT(inWidth)); + + return doLevelSetRebuild(grid, isovalue, exBandWidth, inBandWidth, xform, interrupter); +} + + +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float iso, float exWidth, float inWidth, + const math::Transform* xform) +{ + using ValueT = typename GridType::ValueType; + ValueT + isovalue(zeroVal() + ValueT(iso)), + exBandWidth(zeroVal() + ValueT(exWidth)), + inBandWidth(zeroVal() + ValueT(inWidth)); + + return doLevelSetRebuild( + grid, isovalue, exBandWidth, inBandWidth, xform, nullptr); +} + + +template +inline typename GridType::Ptr +levelSetRebuild(const GridType& grid, float iso, float halfVal, const math::Transform* xform) +{ + using ValueT = typename GridType::ValueType; + ValueT + isovalue(zeroVal() + ValueT(iso)), + halfWidth(zeroVal() + ValueT(halfVal)); + + return doLevelSetRebuild( + grid, isovalue, halfWidth, halfWidth, xform, nullptr); +} + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETREBUILD_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetSphere.h b/openvdb/tools/LevelSetSphere.h new file mode 100644 index 00000000..3c9d42e6 --- /dev/null +++ b/openvdb/tools/LevelSetSphere.h @@ -0,0 +1,233 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file LevelSetSphere.h +/// +/// @brief Generate a narrow-band level set of sphere. +/// +/// @note By definition a level set has a fixed narrow band width +/// (the half width is defined by LEVEL_SET_HALF_WIDTH in Types.h), +/// whereas an SDF can have a variable narrow band width. + +#ifndef OPENVDB_TOOLS_LEVELSETSPHERE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVELSETSPHERE_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include "SignedFloodFill.h" +#include + +#include +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a sphere. +/// +/// @param radius radius of the sphere in world units +/// @param center center of the sphere in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param interrupt a pointer adhering to the util::NullInterrupter interface +/// @param threaded if true multi-threading is enabled (true by default) +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +/// @note The leapfrog algorithm employed in this method is best suited +/// for a single large sphere. For multiple small spheres consider +/// using the faster algorithm in ParticlesToLevelSet.h +template +typename GridType::Ptr +createLevelSetSphere(float radius, const openvdb::Vec3f& center, float voxelSize, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), + InterruptT* interrupt = nullptr, bool threaded = true); + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a sphere. +/// +/// @param radius radius of the sphere in world units +/// @param center center of the sphere in world units +/// @param voxelSize voxel size in world units +/// @param halfWidth half the width of the narrow band, in voxel units +/// @param threaded if true multi-threading is enabled (true by default) +/// +/// @note @c GridType::ValueType must be a floating-point scalar. +/// @note The leapfrog algorithm employed in this method is best suited +/// for a single large sphere. For multiple small spheres consider +/// using the faster algorithm in ParticlesToLevelSet.h +template +typename GridType::Ptr +createLevelSetSphere(float radius, const openvdb::Vec3f& center, float voxelSize, + float halfWidth = float(LEVEL_SET_HALF_WIDTH), bool threaded = true) +{ + return createLevelSetSphere(radius,center,voxelSize,halfWidth,nullptr,threaded); +} + + +//////////////////////////////////////// + + +/// @brief Generates a signed distance field (or narrow band level +/// set) to a single sphere. +/// +/// @note The leapfrog algorithm employed in this class is best +/// suited for a single large sphere. For multiple small spheres consider +/// using the faster algorithm in tools/ParticlesToLevelSet.h +template +class LevelSetSphere +{ +public: + using TreeT = typename GridT::TreeType; + using ValueT = typename GridT::ValueType; + using Vec3T = typename math::Vec3; + static_assert(std::is_floating_point::value, + "level set grids must have scalar, floating-point value types"); + + /// @brief Constructor + /// + /// @param radius radius of the sphere in world units + /// @param center center of the sphere in world units + /// @param interrupt pointer to optional interrupter. Use template + /// argument util::NullInterrupter if no interruption is desired. + /// + /// @note If the radius of the sphere is smaller than + /// 1.5*voxelSize, i.e. the sphere is smaller than the Nyquist + /// frequency of the grid, it is ignored! + LevelSetSphere(ValueT radius, const Vec3T ¢er, InterruptT* interrupt = nullptr) + : mRadius(radius), mCenter(center), mInterrupt(interrupt) + { + if (mRadius<=0) OPENVDB_THROW(ValueError, "radius must be positive"); + } + + /// @return a narrow-band level set of the sphere + /// + /// @param voxelSize Size of voxels in world units + /// @param halfWidth Half-width of narrow-band in voxel units + /// @param threaded If true multi-threading is enabled (true by default) + typename GridT::Ptr getLevelSet(ValueT voxelSize, ValueT halfWidth, bool threaded = true) + { + mGrid = createLevelSet(voxelSize, halfWidth); + this->rasterSphere(voxelSize, halfWidth, threaded); + mGrid->setGridClass(GRID_LEVEL_SET); + return mGrid; + } + +private: + void rasterSphere(ValueT dx, ValueT w, bool threaded) + { + if (!(dx>0.0f)) OPENVDB_THROW(ValueError, "voxel size must be positive"); + if (!(w>1)) OPENVDB_THROW(ValueError, "half-width must be larger than one"); + + // Define radius of sphere and narrow-band in voxel units + const ValueT r0 = mRadius/dx, rmax = r0 + w; + + // Radius below the Nyquist frequency + if (r0 < 1.5f) return; + + // Define center of sphere in voxel units + const Vec3T c(mCenter[0]/dx, mCenter[1]/dx, mCenter[2]/dx); + + // Define bounds of the voxel coordinates + const int imin=math::Floor(c[0]-rmax), imax=math::Ceil(c[0]+rmax); + const int jmin=math::Floor(c[1]-rmax), jmax=math::Ceil(c[1]+rmax); + const int kmin=math::Floor(c[2]-rmax), kmax=math::Ceil(c[2]+rmax); + + // Allocate a ValueAccessor for accelerated random access + typename GridT::Accessor accessor = mGrid->getAccessor(); + + if (mInterrupt) mInterrupt->start("Generating level set of sphere"); + + tbb::enumerable_thread_specific pool(mGrid->tree()); + + auto kernel = [&](const tbb::blocked_range& r) { + openvdb::Coord ijk; + int &i = ijk[0], &j = ijk[1], &k = ijk[2], m=1; + TreeT &tree = pool.local(); + typename GridT::Accessor acc(tree); + // Compute signed distances to sphere using leapfrogging in k + for (i = r.begin(); i <= r.end(); ++i) { + if (util::wasInterrupted(mInterrupt)) return; + const auto x2 = math::Pow2(ValueT(i) - c[0]); + for (j = jmin; j <= jmax; ++j) { + const auto x2y2 = math::Pow2(ValueT(j) - c[1]) + x2; + for (k = kmin; k <= kmax; k += m) { + m = 1; + // Distance in voxel units to sphere + const auto v = math::Sqrt(x2y2 + math::Pow2(ValueT(k)-c[2]))-r0; + const auto d = math::Abs(v); + if (d < w) { // inside narrow band + acc.setValue(ijk, dx*v);// distance in world units + } else { // outside narrow band + m += math::Floor(d-w);// leapfrog + } + }//end leapfrog over k + }//end loop over j + }//end loop over i + };// kernel + + if (threaded) { + // The code blow is making use of a TLS container to minimize the number of concurrent trees + // initially populated by tbb::parallel_for and subsequently merged by tbb::parallel_reduce. + // Experiments have demonstrated this approach to outperform others, including serial reduction + // and a custom concurrent reduction implementation. + tbb::parallel_for(tbb::blocked_range(imin, imax, 128), kernel); + using RangeT = tbb::blocked_range::iterator>; + struct Op { + const bool mDelete; + TreeT *mTree; + Op(TreeT &tree) : mDelete(false), mTree(&tree) {} + Op(const Op& other, tbb::split) : mDelete(true), mTree(new TreeT(other.mTree->background())) {} + ~Op() { if (mDelete) delete mTree; } + void operator()(RangeT &r) { for (auto i=r.begin(); i!=r.end(); ++i) this->merge(*i);} + void join(Op &other) { this->merge(*(other.mTree)); } + void merge(TreeT &tree) { mTree->merge(tree, openvdb::MERGE_ACTIVE_STATES); } + } op( mGrid->tree() ); + tbb::parallel_reduce(RangeT(pool.begin(), pool.end(), 4), op); + } else { + kernel(tbb::blocked_range(imin, imax));//serial + mGrid->tree().merge(*pool.begin(), openvdb::MERGE_ACTIVE_STATES); + } + + // Define consistent signed distances outside the narrow-band + tools::signedFloodFill(mGrid->tree(), threaded); + + if (mInterrupt) mInterrupt->end(); + } + + const ValueT mRadius; + const Vec3T mCenter; + InterruptT* mInterrupt; + typename GridT::Ptr mGrid; +};// LevelSetSphere + + +//////////////////////////////////////// + + +template +typename GridType::Ptr +createLevelSetSphere(float radius, const openvdb::Vec3f& center, float voxelSize, + float halfWidth, InterruptT* interrupt, bool threaded) +{ + // GridType::ValueType is required to be a floating-point scalar. + static_assert(std::is_floating_point::value, + "level set grids must have scalar, floating-point value types"); + + using ValueT = typename GridType::ValueType; + LevelSetSphere factory(ValueT(radius), center, interrupt); + return factory.getLevelSet(ValueT(voxelSize), ValueT(halfWidth), threaded); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVELSETSPHERE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetTracker.h b/openvdb/tools/LevelSetTracker.h new file mode 100644 index 00000000..f1ea0f5f --- /dev/null +++ b/openvdb/tools/LevelSetTracker.h @@ -0,0 +1,679 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file tools/LevelSetTracker.h +/// +/// @brief Performs multi-threaded interface tracking of narrow band +/// level sets. This is the building-block for most level set +/// computations that involve dynamic topology, e.g. advection. + +#ifndef OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "ChangeBackground.h"// for changeLevelSetBackground +#include "Morphology.h"//for dilateActiveValues +#include "Prune.h"// for pruneLevelSet +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +namespace lstrack { + +/// @brief How to handle voxels that fall outside the narrow band +/// @sa @link LevelSetTracker::trimming() trimming@endlink, +/// @link LevelSetTracker::setTrimming() setTrimming@endlink +enum class TrimMode { + kNone, ///< Leave out-of-band voxels intact + kInterior, ///< Set out-of-band interior voxels to the background value + kExterior, ///< Set out-of-band exterior voxels to the background value + kAll ///< Set all out-of-band voxels to the background value +}; + +} // namespace lstrack + + +/// @brief Performs multi-threaded interface tracking of narrow band level sets +template +class LevelSetTracker +{ +public: + using TrimMode = lstrack::TrimMode; + + using GridType = GridT; + using TreeType = typename GridT::TreeType; + using LeafType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + using LeafManagerType = typename tree::LeafManager; // leafs + buffers + using LeafRange = typename LeafManagerType::LeafRange; + using BufferType = typename LeafManagerType::BufferType; + using MaskTreeType = typename TreeType::template ValueConverter::Type; + static_assert(std::is_floating_point::value, + "LevelSetTracker requires a level set grid with floating-point values"); + + /// Lightweight struct that stores the state of the LevelSetTracker + struct State { + State(math::BiasedGradientScheme s = math::HJWENO5_BIAS, + math::TemporalIntegrationScheme t = math::TVD_RK1, + int n = static_cast(LEVEL_SET_HALF_WIDTH), int g = 1) + : spatialScheme(s), temporalScheme(t), normCount(n), grainSize(g) {} + math::BiasedGradientScheme spatialScheme; + math::TemporalIntegrationScheme temporalScheme; + int normCount;// Number of iterations of normalization + int grainSize; + }; + + /// @brief Main constructor + /// @throw RuntimeError if the grid is not a level set + LevelSetTracker(GridT& grid, InterruptT* interrupt = nullptr); + + virtual ~LevelSetTracker() { delete mLeafs; } + + /// @brief Iterative normalization, i.e. solving the Eikonal equation + /// @note The mask it optional and by default it is ignored. + template + void normalize(const MaskType* mask); + + /// @brief Iterative normalization, i.e. solving the Eikonal equation + void normalize() { this->normalize(nullptr); } + + /// @brief Track the level set interface, i.e. rebuild and normalize the + /// narrow band of the level set. + void track(); + + /// @brief Set voxels that are outside the narrow band to the background value + /// (if trimming is enabled) and prune the grid. + /// @details Pruning is done automatically as a step in tracking. + /// @sa @link setTrimming() setTrimming@endlink, @link trimming() trimming@endlink + void prune(); + + /// @brief Fast but approximate dilation of the narrow band - one + /// layer at a time. Normally we recommend using the resize method below + /// which internally calls dilate (or erode) with the correct + /// number of @a iterations to achieve the desired half voxel width + /// of the narrow band (3 is recomended for most level set applications). + /// + /// @note Since many level set applications perform + /// interface-tracking, which in turn rebuilds the narrow-band + /// accurately, this dilate method can often be used with a + /// single iterations of low-order re-normalization. This + /// effectively allows very narrow bands to be created from points + /// or polygons (e.g. with a half voxel width of 1), followed by a + /// fast but approximate dilation (typically with a half voxel + /// width of 3). This can be significantly faster than generating + /// the final width of the narrow band from points or polygons. + void dilate(int iterations = 1); + + /// @brief Erodes the width of the narrow-band and update the background values + /// @throw ValueError if @a iterations is larger than the current half-width. + void erode(int iterations = 1); + + /// @brief Resize the width of the narrow band, i.e. perform + /// dilation and renormalization or erosion as required. + bool resize(Index halfWidth = static_cast(LEVEL_SET_HALF_WIDTH)); + + /// @brief Return the half width of the narrow band in floating-point voxel units. + ValueType getHalfWidth() const { return mGrid->background()/mDx; } + + /// @brief Return the state of the tracker (see struct defined above) + State getState() const { return mState; } + + /// @brief Set the state of the tracker (see struct defined above) + void setState(const State& s) { mState = s; } + + /// @return the spatial finite difference scheme + math::BiasedGradientScheme getSpatialScheme() const { return mState.spatialScheme; } + + /// @brief Set the spatial finite difference scheme + void setSpatialScheme(math::BiasedGradientScheme s) { mState.spatialScheme = s; } + + /// @return the temporal integration scheme + math::TemporalIntegrationScheme getTemporalScheme() const { return mState.temporalScheme; } + + /// @brief Set the spatial finite difference scheme + void setTemporalScheme(math::TemporalIntegrationScheme s) { mState.temporalScheme = s;} + + /// @return The number of normalizations performed per track or + /// normalize call. + int getNormCount() const { return mState.normCount; } + + /// @brief Set the number of normalizations performed per track or + /// normalize call. + void setNormCount(int n) { mState.normCount = n; } + + /// @return the grain-size used for multi-threading + int getGrainSize() const { return mState.grainSize; } + + /// @brief Set the grain-size used for multi-threading. + /// @note A grainsize of 0 or less disables multi-threading! + void setGrainSize(int grainsize) { mState.grainSize = grainsize; } + + /// @brief Return the trimming mode for voxels outside the narrow band. + /// @details Trimming is enabled by default and is applied automatically prior to pruning. + /// @sa @link setTrimming() setTrimming@endlink, @link prune() prune@endlink + TrimMode trimming() const { return mTrimMode; } + /// @brief Specify whether to trim voxels outside the narrow band prior to pruning. + /// @sa @link trimming() trimming@endlink, @link prune() prune@endlink + void setTrimming(TrimMode mode) { mTrimMode = mode; } + + ValueType voxelSize() const { return mDx; } + + void startInterrupter(const char* msg); + + void endInterrupter(); + + /// @return false if the process was interrupted + bool checkInterrupter(); + + const GridType& grid() const { return *mGrid; } + + LeafManagerType& leafs() { return *mLeafs; } + + const LeafManagerType& leafs() const { return *mLeafs; } + +private: + // disallow copy construction and copy by assignment! + LevelSetTracker(const LevelSetTracker&);// not implemented + LevelSetTracker& operator=(const LevelSetTracker&);// not implemented + + // Private class to perform multi-threaded trimming of + // voxels that are too far away from the zero-crossing. + template + struct Trim + { + Trim(LevelSetTracker& tracker) : mTracker(tracker) {} + void trim(); + void operator()(const LeafRange& r) const; + LevelSetTracker& mTracker; + };// Trim + + // Private struct to perform multi-threaded normalization + template + struct Normalizer + { + using SchemeT = math::BIAS_SCHEME; + using StencilT = typename SchemeT::template ISStencil::StencilType; + using MaskLeafT = typename MaskT::LeafNodeType; + using MaskIterT = typename MaskLeafT::ValueOnCIter; + using VoxelIterT = typename LeafType::ValueOnCIter; + + Normalizer(LevelSetTracker& tracker, const MaskT* mask); + void normalize(); + void operator()(const LeafRange& r) const {mTask(const_cast(this), r);} + void cook(const char* msg, int swapBuffer=0); + template + void euler(const LeafRange& range, Index phiBuffer, Index resultBuffer); + inline void euler01(const LeafRange& r) {this->euler<0,1>(r, 0, 1);} + inline void euler12(const LeafRange& r) {this->euler<1,2>(r, 1, 1);} + inline void euler34(const LeafRange& r) {this->euler<3,4>(r, 1, 2);} + inline void euler13(const LeafRange& r) {this->euler<1,3>(r, 1, 2);} + template + void eval(StencilT& stencil, const ValueType* phi, ValueType* result, Index n) const; + LevelSetTracker& mTracker; + const MaskT* mMask; + const ValueType mDt, mInvDx; + typename std::function mTask; + }; // Normalizer struct + + template + void normalize1(const MaskT* mask); + + template + void normalize2(const MaskT* mask); + + // Throughout the methods below mLeafs is always assumed to contain + // a list of the current LeafNodes! The auxiliary buffers on the + // other hand always have to be allocated locally, since some + // methods need them and others don't! + GridType* mGrid; + LeafManagerType* mLeafs; + InterruptT* mInterrupter; + const ValueType mDx; + State mState; + TrimMode mTrimMode = TrimMode::kAll; +}; // end of LevelSetTracker class + +template +LevelSetTracker:: +LevelSetTracker(GridT& grid, InterruptT* interrupt): + mGrid(&grid), + mLeafs(new LeafManagerType(grid.tree())), + mInterrupter(interrupt), + mDx(static_cast(grid.voxelSize()[0])), + mState() +{ + if ( !grid.hasUniformVoxels() ) { + OPENVDB_THROW(RuntimeError, + "The transform must have uniform scale for the LevelSetTracker to function"); + } + if ( grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_THROW(RuntimeError, + "LevelSetTracker expected a level set, got a grid of class \"" + + grid.gridClassToString(grid.getGridClass()) + + "\" [hint: Grid::setGridClass(openvdb::GRID_LEVEL_SET)]"); + } +} + +template +inline void +LevelSetTracker:: +prune() +{ + this->startInterrupter("Pruning Level Set"); + + // Set voxels that are too far away from the zero crossing to the background value. + switch (mTrimMode) { + case TrimMode::kNone: break; + case TrimMode::kInterior: Trim(*this).trim(); break; + case TrimMode::kExterior: Trim(*this).trim(); break; + case TrimMode::kAll: Trim(*this).trim(); break; + } + + // Remove inactive nodes from tree + tools::pruneLevelSet(mGrid->tree()); + + // The tree topology has changes so rebuild the list of leafs + mLeafs->rebuildLeafArray(); + this->endInterrupter(); +} + +template +inline void +LevelSetTracker:: +track() +{ + // Dilate narrow-band (this also rebuilds the leaf array!) + tools::dilateActiveValues( *mLeafs, 1, tools::NN_FACE, tools::IGNORE_TILES); + + // Compute signed distances in dilated narrow-band + this->normalize(); + + // Remove voxels that are outside the narrow band + this->prune(); +} + +template +inline void +LevelSetTracker:: +dilate(int iterations) +{ + if (this->getNormCount() == 0) { + for (int i=0; i < iterations; ++i) { + tools::dilateActiveValues( *mLeafs, 1, tools::NN_FACE, tools::IGNORE_TILES); + tools::changeLevelSetBackground(this->leafs(), mDx + mGrid->background()); + } + } else { + for (int i=0; i < iterations; ++i) { + MaskTreeType mask0(mGrid->tree(), false, TopologyCopy()); + tools::dilateActiveValues( *mLeafs, 1, tools::NN_FACE, tools::IGNORE_TILES); + tools::changeLevelSetBackground(this->leafs(), mDx + mGrid->background()); + MaskTreeType mask(mGrid->tree(), false, TopologyCopy()); + mask.topologyDifference(mask0); + this->normalize(&mask); + } + } +} + +template +inline void +LevelSetTracker:: +erode(int iterations) +{ + tools::erodeVoxels(*mLeafs, iterations); + mLeafs->rebuildLeafArray(); + const ValueType background = mGrid->background() - ValueType(iterations) * mDx; + tools::changeLevelSetBackground(this->leafs(), background); +} + +template +inline bool +LevelSetTracker:: +resize(Index halfWidth) +{ + const int wOld = static_cast(math::RoundDown(this->getHalfWidth())); + const int wNew = static_cast(halfWidth); + if (wOld < wNew) { + this->dilate(wNew - wOld); + } else if (wOld > wNew) { + this->erode(wOld - wNew); + } + return wOld != wNew; +} + +template +inline void +LevelSetTracker:: +startInterrupter(const char* msg) +{ + if (mInterrupter) mInterrupter->start(msg); +} + +template +inline void +LevelSetTracker:: +endInterrupter() +{ + if (mInterrupter) mInterrupter->end(); +} + +template +inline bool +LevelSetTracker:: +checkInterrupter() +{ + if (util::wasInterrupted(mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return false; + } + return true; +} + +template +template +inline void +LevelSetTracker:: +normalize(const MaskT* mask) +{ + switch (this->getSpatialScheme()) { + case math::FIRST_BIAS: + this->normalize1(mask); break; + case math::SECOND_BIAS: + this->normalize1(mask); break; + case math::THIRD_BIAS: + this->normalize1(mask); break; + case math::WENO5_BIAS: + this->normalize1(mask); break; + case math::HJWENO5_BIAS: + this->normalize1(mask); break; + case math::UNKNOWN_BIAS: + default: + OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!"); + } +} + +template +template +inline void +LevelSetTracker:: +normalize1(const MaskT* mask) +{ + switch (this->getTemporalScheme()) { + case math::TVD_RK1: + this->normalize2(mask); break; + case math::TVD_RK2: + this->normalize2(mask); break; + case math::TVD_RK3: + this->normalize2(mask); break; + case math::UNKNOWN_TIS: + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + } +} + +template +template +inline void +LevelSetTracker:: +normalize2(const MaskT* mask) +{ + Normalizer tmp(*this, mask); + tmp.normalize(); +} + + +//////////////////////////////////////////////////////////////////////////// + + +template +template +inline void +LevelSetTracker::Trim::trim() +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Trimming != TrimMode::kNone) { + const int grainSize = mTracker.getGrainSize(); + const LeafRange range = mTracker.leafs().leafRange(grainSize); + + if (grainSize>0) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +/// Trim away voxels that have moved outside the narrow band +template +template +inline void +LevelSetTracker::Trim::operator()(const LeafRange& range) const +{ + mTracker.checkInterrupter(); + const ValueType gamma = mTracker.mGrid->background(); + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + for (auto leafIter = range.begin(); leafIter; ++leafIter) { + auto& leaf = *leafIter; + for (auto iter = leaf.beginValueOn(); iter; ++iter) { + const auto val = *iter; + switch (Trimming) { // resolved at compile time + case TrimMode::kNone: + break; + case TrimMode::kInterior: + if (val <= -gamma) { leaf.setValueOff(iter.pos(), -gamma); } + break; + case TrimMode::kExterior: + if (val >= gamma) { leaf.setValueOff(iter.pos(), gamma); } + break; + case TrimMode::kAll: + if (val <= -gamma) { + leaf.setValueOff(iter.pos(), -gamma); + } else if (val >= gamma) { + leaf.setValueOff(iter.pos(), gamma); + } + break; + } + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////////////////////////////////////////// + +template +template +inline +LevelSetTracker:: +Normalizer:: +Normalizer(LevelSetTracker& tracker, const MaskT* mask) + : mTracker(tracker) + , mMask(mask) + , mDt(tracker.voxelSize()*(TemporalScheme == math::TVD_RK1 ? 0.3f : + TemporalScheme == math::TVD_RK2 ? 0.9f : 1.0f)) + , mInvDx(1.0f/tracker.voxelSize()) + , mTask(nullptr) +{ +} + +template +template +inline void +LevelSetTracker:: +Normalizer:: +normalize() +{ + namespace ph = std::placeholders; + + /// Make sure we have enough temporal auxiliary buffers + mTracker.mLeafs->rebuildAuxBuffers(TemporalScheme == math::TVD_RK3 ? 2 : 1); + + for (int n=0, e=mTracker.getNormCount(); n < e; ++n) { + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + switch(TemporalScheme) {//switch is resolved at compile-time + case math::TVD_RK1: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(0) = Phi_t0(0) - dt * VdotG_t0(1) + mTask = std::bind(&Normalizer::euler01, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Normalizing level set using TVD_RK1", 1); + break; + case math::TVD_RK2: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(1) + mTask = std::bind(&Normalizer::euler01, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Normalizing level set using TVD_RK1 (step 1 of 2)", 1); + + // Convex combine explicit Euler step: t2 = t0 + dt + // Phi_t2(1) = 1/2 * Phi_t0(1) + 1/2 * (Phi_t1(0) - dt * V.Grad_t1(0)) + mTask = std::bind(&Normalizer::euler12, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 1 such that Phi_t2(0) and Phi_t1(1) + this->cook("Normalizing level set using TVD_RK1 (step 2 of 2)", 1); + break; + case math::TVD_RK3: + // Perform one explicit Euler step: t1 = t0 + dt + // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(1) + mTask = std::bind(&Normalizer::euler01, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1) + this->cook("Normalizing level set using TVD_RK3 (step 1 of 3)", 1); + + // Convex combine explicit Euler step: t2 = t0 + dt/2 + // Phi_t2(2) = 3/4 * Phi_t0(1) + 1/4 * (Phi_t1(0) - dt * V.Grad_t1(0)) + mTask = std::bind(&Normalizer::euler34, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 2 such that Phi_t2(0) and Phi_t1(2) + this->cook("Normalizing level set using TVD_RK3 (step 2 of 3)", 2); + + // Convex combine explicit Euler step: t3 = t0 + dt + // Phi_t3(2) = 1/3 * Phi_t0(1) + 2/3 * (Phi_t2(0) - dt * V.Grad_t2(0) + mTask = std::bind(&Normalizer::euler13, ph::_1, ph::_2); + + // Cook and swap buffer 0 and 2 such that Phi_t3(0) and Phi_t2(2) + this->cook("Normalizing level set using TVD_RK3 (step 3 of 3)", 2); + break; + case math::UNKNOWN_TIS: + default: + OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!"); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + mTracker.mLeafs->removeAuxBuffers(); +} + +/// Private method to perform the task (serial or threaded) and +/// subsequently swap the leaf buffers. +template +template +inline void +LevelSetTracker:: +Normalizer:: +cook(const char* msg, int swapBuffer) +{ + mTracker.startInterrupter( msg ); + + const int grainSize = mTracker.getGrainSize(); + const LeafRange range = mTracker.leafs().leafRange(grainSize); + + grainSize>0 ? tbb::parallel_for(range, *this) : (*this)(range); + + mTracker.leafs().swapLeafBuffer(swapBuffer, grainSize==0); + + mTracker.endInterrupter(); +} + +template +template +template +inline void +LevelSetTracker:: +Normalizer:: +eval(StencilT& stencil, const ValueType* phi, ValueType* result, Index n) const +{ + using GradientT = typename math::ISGradientNormSqrd; + static const ValueType alpha = ValueType(Nominator)/ValueType(Denominator); + static const ValueType beta = ValueType(1) - alpha; + + const ValueType normSqGradPhi = GradientT::result(stencil); + const ValueType phi0 = stencil.getValue(); + ValueType v = phi0 / ( math::Sqrt(math::Pow2(phi0) + normSqGradPhi) + + math::Tolerance::value() ); + v = phi0 - mDt * v * (math::Sqrt(normSqGradPhi) * mInvDx - 1.0f); + result[n] = Nominator ? alpha * phi[n] + beta * v : v; +} + +template +template +template +inline void +LevelSetTracker:: +Normalizer:: +euler(const LeafRange& range, Index phiBuffer, Index resultBuffer) +{ + mTracker.checkInterrupter(); + + StencilT stencil(mTracker.grid()); + + for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + const ValueType* phi = leafIter.buffer(phiBuffer).data(); + ValueType* result = leafIter.buffer(resultBuffer).data(); + if (mMask == nullptr) { + for (auto iter = leafIter->cbeginValueOn(); iter; ++iter) { + stencil.moveTo(iter); + this->eval(stencil, phi, result, iter.pos()); + }//loop over active voxels in the leaf of the level set + } else if (const MaskLeafT* mask = mMask->probeLeaf(leafIter->origin())) { + const ValueType* phi0 = leafIter->buffer().data(); + for (MaskIterT iter = mask->cbeginValueOn(); iter; ++iter) { + const Index i = iter.pos(); + stencil.moveTo(iter.getCoord(), phi0[i]); + this->eval(stencil, phi, result, i); + }//loop over active voxels in the leaf of the mask + } + }//loop over leafs of the level set +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/LevelSetUtil.h b/openvdb/tools/LevelSetUtil.h new file mode 100644 index 00000000..434c6cc7 --- /dev/null +++ b/openvdb/tools/LevelSetUtil.h @@ -0,0 +1,2599 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tools/LevelSetUtil.h +/// +/// @brief Miscellaneous utility methods that operate primarily +/// or exclusively on level set grids. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED + +#include "MeshToVolume.h" // for traceExteriorBoundaries +#include "SignedFloodFill.h" // for signedFloodFillWithValues + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +// MS Visual C++ requires this extra level of indirection in order to compile +// THIS MUST EXIST IN AN UNNAMED NAMESPACE IN ORDER TO COMPILE ON WINDOWS +namespace { + +template +inline typename GridType::ValueType lsutilGridMax() +{ + return std::numeric_limits::max(); +} + +template +inline typename GridType::ValueType lsutilGridZero() +{ + return zeroVal(); +} + +} // unnamed namespace + + +//////////////////////////////////////// + + +/// @brief Threaded method to convert a sparse level set/SDF into a sparse fog volume +/// +/// @details For a level set, the active and negative-valued interior half of the +/// narrow band becomes a linear ramp from 0 to 1; the inactive interior becomes +/// active with a constant value of 1; and the exterior, including the background +/// and the active exterior half of the narrow band, becomes inactive with a constant +/// value of 0. The interior, though active, remains sparse. +/// @details For a generic SDF, a specified cutoff distance determines the width +/// of the ramp, but otherwise the result is the same as for a level set. +/// +/// @param grid level set/SDF grid to transform +/// @param cutoffDistance optional world space cutoff distance for the ramp +/// (automatically clamped if greater than the interior +/// narrow band width) +template +inline void +sdfToFogVolume( + GridType& grid, + typename GridType::ValueType cutoffDistance = lsutilGridMax()); + + +/// @brief Threaded method to construct a boolean mask that represents interior regions +/// in a signed distance field. +/// +/// @return A shared pointer to either a boolean grid or tree with the same tree +/// configuration and potentially transform as the input @c volume and whose active +/// and @c true values correspond to the interior of the input signed distance field. +/// +/// @param volume Signed distance field / level set volume. +/// @param isovalue Threshold below which values are considered part of the +/// interior region. +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +sdfInteriorMask( + const GridOrTreeType& volume, + typename GridOrTreeType::ValueType isovalue = lsutilGridZero()); + + +/// @brief Extracts the interior regions of a signed distance field and topologically enclosed +/// (watertight) regions of value greater than the @a isovalue (cavities) that can arise +/// as the result of CSG union operations between different shapes where at least one of +/// the shapes has a concavity that is capped. +/// +/// For example the enclosed region of a capped bottle would include the walls and +/// the interior cavity. +/// +/// @return A shared pointer to either a boolean grid or tree with the same tree configuration +/// and potentially transform as the input @c volume and whose active and @c true values +/// correspond to the interior and enclosed regions in the input signed distance field. +/// +/// @param volume Signed distance field / level set volume. +/// @param isovalue Threshold below which values are considered part of the interior region. +/// @param fillMask Optional boolean tree, when provided enclosed cavity regions that are not +/// completely filled by this mask are ignored. +/// +/// For instance if the fill mask does not completely fill the bottle in the +/// previous example only the walls and cap are returned and the interior +/// cavity will be ignored. +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +extractEnclosedRegion( + const GridOrTreeType& volume, + typename GridOrTreeType::ValueType isovalue = lsutilGridZero(), + const typename TreeAdapter::TreeType::template ValueConverter::Type* + fillMask = nullptr); + + +/// @brief Return a mask of the voxels that intersect the implicit surface with +/// the given @a isovalue. +/// +/// @param volume Signed distance field / level set volume. +/// @param isovalue The crossing point that is considered the surface. +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +extractIsosurfaceMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue); + + +/// @brief Return a mask for each connected component of the given grid's active voxels. +/// +/// @param volume Input grid or tree +/// @param masks Output set of disjoint active topology masks sorted in descending order +/// based on the active voxel count. +template +inline void +extractActiveVoxelSegmentMasks(const GridOrTreeType& volume, + std::vector::Type::Ptr>& masks); + + +/// @brief Separates disjoint active topology components into distinct grids or trees. +/// +/// @details Supports volumes with active tiles. +/// +/// @param volume Input grid or tree +/// @param segments Output set of disjoint active topology components sorted in +/// descending order based on the active voxel count. +template +inline void +segmentActiveVoxels(const GridOrTreeType& volume, + std::vector& segments); + + +/// @brief Separates disjoint SDF surfaces into distinct grids or trees. +/// +/// @details Supports asymmetric interior / exterior narrowband widths and +/// SDF volumes with dense interior regions. +/// +/// @param volume Input signed distance field / level set volume +/// @param segments Output set of disjoint SDF surfaces found in @a volume sorted in +/// descending order based on the surface intersecting voxel count. +template +inline void +segmentSDF(const GridOrTreeType& volume, std::vector& segments); + + +//////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// + +// Internal utility objects and implementation details + + +namespace level_set_util_internal { + + +template +struct MaskInteriorVoxels { + + using ValueType = typename LeafNodeType::ValueType; + using BoolLeafNodeType = tree::LeafNode; + + MaskInteriorVoxels( + ValueType isovalue, const LeafNodeType ** nodes, BoolLeafNodeType ** maskNodes) + : mNodes(nodes), mMaskNodes(maskNodes), mIsovalue(isovalue) + { + } + + void operator()(const tbb::blocked_range& range) const { + + BoolLeafNodeType * maskNodePt = nullptr; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + mMaskNodes[n] = nullptr; + const LeafNodeType& node = *mNodes[n]; + + if (!maskNodePt) { + maskNodePt = new BoolLeafNodeType(node.origin(), false); + } else { + maskNodePt->setOrigin(node.origin()); + } + + const ValueType* values = &node.getValue(0); + for (Index i = 0; i < LeafNodeType::SIZE; ++i) { + if (values[i] < mIsovalue) maskNodePt->setValueOn(i, true); + } + + if (maskNodePt->onVoxelCount() > 0) { + mMaskNodes[n] = maskNodePt; + maskNodePt = nullptr; + } + } + + if (maskNodePt) delete maskNodePt; + } + + LeafNodeType const * const * const mNodes; + BoolLeafNodeType ** const mMaskNodes; + ValueType const mIsovalue; +}; // MaskInteriorVoxels + + +template +struct MaskInteriorTiles { + + using ValueType = typename TreeType::ValueType; + + MaskInteriorTiles(ValueType isovalue, const TreeType& tree, InternalNodeType ** maskNodes) + : mTree(&tree), mMaskNodes(maskNodes), mIsovalue(isovalue) { } + + void operator()(const tbb::blocked_range& range) const { + tree::ValueAccessor acc(*mTree); + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + typename InternalNodeType::ValueAllIter it = mMaskNodes[n]->beginValueAll(); + for (; it; ++it) { + if (acc.getValue(it.getCoord()) < mIsovalue) { + it.setValue(true); + it.setValueOn(true); + } + } + } + } + + TreeType const * const mTree; + InternalNodeType ** const mMaskNodes; + ValueType const mIsovalue; +}; // MaskInteriorTiles + + +template +struct PopulateTree { + + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + + PopulateTree(TreeType& tree, LeafNodeType** leafnodes, + const size_t * nodexIndexMap, ValueType background) + : mNewTree(background) + , mTreePt(&tree) + , mNodes(leafnodes) + , mNodeIndexMap(nodexIndexMap) + { + } + + PopulateTree(PopulateTree& rhs, tbb::split) + : mNewTree(rhs.mNewTree.background()) + , mTreePt(&mNewTree) + , mNodes(rhs.mNodes) + , mNodeIndexMap(rhs.mNodeIndexMap) + { + } + + void operator()(const tbb::blocked_range& range) { + + tree::ValueAccessor acc(*mTreePt); + + if (mNodeIndexMap) { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + for (size_t i = mNodeIndexMap[n], I = mNodeIndexMap[n + 1]; i < I; ++i) { + if (mNodes[i] != nullptr) acc.addLeaf(mNodes[i]); + } + } + } else { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + acc.addLeaf(mNodes[n]); + } + } + } + + void join(PopulateTree& rhs) { mTreePt->merge(*rhs.mTreePt); } + +private: + TreeType mNewTree; + TreeType * const mTreePt; + LeafNodeType ** const mNodes; + size_t const * const mNodeIndexMap; +}; // PopulateTree + + +/// @brief Negative active values are set @c 0, everything else is set to @c 1. +template +struct LabelBoundaryVoxels { + + using ValueType = typename LeafNodeType::ValueType; + using CharLeafNodeType = tree::LeafNode; + + LabelBoundaryVoxels( + ValueType isovalue, const LeafNodeType ** nodes, CharLeafNodeType ** maskNodes) + : mNodes(nodes), mMaskNodes(maskNodes), mIsovalue(isovalue) + { + } + + void operator()(const tbb::blocked_range& range) const { + + CharLeafNodeType * maskNodePt = nullptr; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + mMaskNodes[n] = nullptr; + const LeafNodeType& node = *mNodes[n]; + + if (!maskNodePt) { + maskNodePt = new CharLeafNodeType(node.origin(), 1); + } else { + maskNodePt->setOrigin(node.origin()); + } + + typename LeafNodeType::ValueOnCIter it; + for (it = node.cbeginValueOn(); it; ++it) { + maskNodePt->setValueOn(it.pos(), ((*it - mIsovalue) < 0.0) ? 0 : 1); + } + + if (maskNodePt->onVoxelCount() > 0) { + mMaskNodes[n] = maskNodePt; + maskNodePt = nullptr; + } + } + + if (maskNodePt) delete maskNodePt; + } + + LeafNodeType const * const * const mNodes; + CharLeafNodeType ** const mMaskNodes; + ValueType const mIsovalue; +}; // LabelBoundaryVoxels + + +template +struct FlipRegionSign { + using ValueType = typename LeafNodeType::ValueType; + + FlipRegionSign(LeafNodeType ** nodes) : mNodes(nodes) { } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + ValueType* values = const_cast(&mNodes[n]->getValue(0)); + for (Index i = 0; i < LeafNodeType::SIZE; ++i) { + values[i] = values[i] < 0 ? 1 : -1; + } + } + } + + LeafNodeType ** const mNodes; +}; // FlipRegionSign + + +template +struct FindMinVoxelValue { + + using ValueType = typename LeafNodeType::ValueType; + + FindMinVoxelValue(LeafNodeType const * const * const leafnodes) + : minValue(std::numeric_limits::max()) + , mNodes(leafnodes) + { + } + + FindMinVoxelValue(FindMinVoxelValue& rhs, tbb::split) + : minValue(std::numeric_limits::max()) + , mNodes(rhs.mNodes) + { + } + + void operator()(const tbb::blocked_range& range) { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + const ValueType* data = mNodes[n]->buffer().data(); + for (Index i = 0; i < LeafNodeType::SIZE; ++i) { + minValue = std::min(minValue, data[i]); + } + } + } + + void join(FindMinVoxelValue& rhs) { minValue = std::min(minValue, rhs.minValue); } + + ValueType minValue; + + LeafNodeType const * const * const mNodes; +}; // FindMinVoxelValue + + +template +struct FindMinTileValue { + + using ValueType = typename InternalNodeType::ValueType; + + FindMinTileValue(InternalNodeType const * const * const nodes) + : minValue(std::numeric_limits::max()) + , mNodes(nodes) + { + } + + FindMinTileValue(FindMinTileValue& rhs, tbb::split) + : minValue(std::numeric_limits::max()) + , mNodes(rhs.mNodes) + { + } + + void operator()(const tbb::blocked_range& range) { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + typename InternalNodeType::ValueAllCIter it = mNodes[n]->beginValueAll(); + for (; it; ++it) { + minValue = std::min(minValue, *it); + } + } + } + + void join(FindMinTileValue& rhs) { minValue = std::min(minValue, rhs.minValue); } + + ValueType minValue; + + InternalNodeType const * const * const mNodes; +}; // FindMinTileValue + + +template +struct SDFVoxelsToFogVolume { + + using ValueType = typename LeafNodeType::ValueType; + + SDFVoxelsToFogVolume(LeafNodeType ** nodes, ValueType cutoffDistance) + : mNodes(nodes), mWeight(ValueType(1.0) / cutoffDistance) + { + } + + void operator()(const tbb::blocked_range& range) const { + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + LeafNodeType& node = *mNodes[n]; + node.setValuesOff(); + + ValueType* values = node.buffer().data(); + for (Index i = 0; i < LeafNodeType::SIZE; ++i) { + values[i] = values[i] > ValueType(0.0) ? ValueType(0.0) : values[i] * mWeight; + if (values[i] > ValueType(0.0)) node.setValueOn(i); + } + + if (node.onVoxelCount() == 0) { + delete mNodes[n]; + mNodes[n] = nullptr; + } + } + } + + LeafNodeType ** const mNodes; + ValueType const mWeight; +}; // SDFVoxelsToFogVolume + + +template +struct SDFTilesToFogVolume { + + SDFTilesToFogVolume(const TreeType& tree, InternalNodeType ** nodes) + : mTree(&tree), mNodes(nodes) { } + + void operator()(const tbb::blocked_range& range) const { + + using ValueType = typename TreeType::ValueType; + tree::ValueAccessor acc(*mTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + typename InternalNodeType::ValueAllIter it = mNodes[n]->beginValueAll(); + for (; it; ++it) { + if (acc.getValue(it.getCoord()) < ValueType(0.0)) { + it.setValue(ValueType(1.0)); + it.setValueOn(true); + } + } + } + } + + TreeType const * const mTree; + InternalNodeType ** const mNodes; +}; // SDFTilesToFogVolume + + +template +struct FillMaskBoundary { + + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + FillMaskBoundary(const TreeType& tree, ValueType isovalue, const BoolTreeType& fillMask, + const BoolLeafNodeType ** fillNodes, BoolLeafNodeType ** newNodes) + : mTree(&tree) + , mFillMask(&fillMask) + , mFillNodes(fillNodes) + , mNewNodes(newNodes) + , mIsovalue(isovalue) + { + } + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor maskAcc(*mFillMask); + tree::ValueAccessor distAcc(*mTree); + + std::unique_ptr valueMask(new char[BoolLeafNodeType::SIZE]); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + mNewNodes[n] = nullptr; + const BoolLeafNodeType& node = *mFillNodes[n]; + const Coord& origin = node.origin(); + + const bool denseNode = node.isDense(); + + // possible early out if the fill mask is dense + if (denseNode) { + + int denseNeighbors = 0; + + const BoolLeafNodeType* neighborNode = + maskAcc.probeConstLeaf(origin.offsetBy(-1, 0, 0)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(BoolLeafNodeType::DIM, 0, 0)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, -1, 0)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, BoolLeafNodeType::DIM, 0)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, 0, -1)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, 0, BoolLeafNodeType::DIM)); + if (neighborNode && neighborNode->isDense()) ++denseNeighbors; + + if (denseNeighbors == 6) continue; + } + + // rest value mask + memset(valueMask.get(), 0, sizeof(char) * BoolLeafNodeType::SIZE); + + const typename TreeType::LeafNodeType* distNode = distAcc.probeConstLeaf(origin); + + // check internal voxel neighbors + + bool earlyTermination = false; + + if (!denseNode) { + if (distNode) { + evalInternalNeighborsP(valueMask.get(), node, *distNode); + evalInternalNeighborsN(valueMask.get(), node, *distNode); + } else if (distAcc.getValue(origin) > mIsovalue) { + earlyTermination = evalInternalNeighborsP(valueMask.get(), node); + if (!earlyTermination) { + earlyTermination = evalInternalNeighborsN(valueMask.get(), node); + } + } + } + + // check external voxel neighbors + + if (!earlyTermination) { + evalExternalNeighborsX(valueMask.get(), node, maskAcc, distAcc); + evalExternalNeighborsX(valueMask.get(), node, maskAcc, distAcc); + evalExternalNeighborsY(valueMask.get(), node, maskAcc, distAcc); + evalExternalNeighborsY(valueMask.get(), node, maskAcc, distAcc); + evalExternalNeighborsZ(valueMask.get(), node, maskAcc, distAcc); + evalExternalNeighborsZ(valueMask.get(), node, maskAcc, distAcc); + } + + // Export marked boundary voxels. + + int numBoundaryValues = 0; + for (Index i = 0, I = BoolLeafNodeType::SIZE; i < I; ++i) { + numBoundaryValues += valueMask[i] == 1; + } + + if (numBoundaryValues > 0) { + mNewNodes[n] = new BoolLeafNodeType(origin, false); + for (Index i = 0, I = BoolLeafNodeType::SIZE; i < I; ++i) { + if (valueMask[i] == 1) mNewNodes[n]->setValueOn(i); + } + } + } + } + +private: + // Check internal voxel neighbors in positive {x, y, z} directions. + void evalInternalNeighborsP(char* valueMask, const BoolLeafNodeType& node, + const LeafNodeType& distNode) const + { + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM - 1; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos + 1) && distNode.getValue(pos + 1) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM - 1; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos + BoolLeafNodeType::DIM) && + distNode.getValue(pos + BoolLeafNodeType::DIM) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM - 1; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) && + (distNode.getValue(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) + > mIsovalue)) + { + valueMask[pos] = 1; + } + } + } + } + } + + bool evalInternalNeighborsP(char* valueMask, const BoolLeafNodeType& node) const { + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM - 1; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && !node.isValueOn(pos + 1)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM - 1; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && !node.isValueOn(pos + BoolLeafNodeType::DIM)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM - 1; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && + !node.isValueOn(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + return false; + } + + // Check internal voxel neighbors in negative {x, y, z} directions. + + void evalInternalNeighborsN(char* valueMask, const BoolLeafNodeType& node, + const LeafNodeType& distNode) const + { + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 1; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos - 1) && distNode.getValue(pos - 1) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 1; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos - BoolLeafNodeType::DIM) && + distNode.getValue(pos - BoolLeafNodeType::DIM) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + + for (Index x = 1; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue; + + if (!node.isValueOn(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) && + (distNode.getValue(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) + > mIsovalue)) + { + valueMask[pos] = 1; + } + } + } + } + } + + + bool evalInternalNeighborsN(char* valueMask, const BoolLeafNodeType& node) const { + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 1; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && !node.isValueOn(pos - 1)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 1; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && !node.isValueOn(pos - BoolLeafNodeType::DIM)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + for (Index x = 1; x < BoolLeafNodeType::DIM; ++x) { + const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM); + for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) { + const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM); + for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) { + const Index pos = yPos + z; + + if (node.isValueOn(pos) && + !node.isValueOn(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM)) { + valueMask[pos] = 1; + return true; + } + } + } + } + + return false; + } + + + // Check external voxel neighbors + + // If UpWind is true check the X+ oriented node face, else the X- oriented face. + template + void evalExternalNeighborsX(char* valueMask, const BoolLeafNodeType& node, + const tree::ValueAccessor& maskAcc, + const tree::ValueAccessor& distAcc) const { + + const Coord& origin = node.origin(); + Coord ijk(0, 0, 0), nijk; + int step = -1; + + if (UpWind) { + step = 1; + ijk[0] = int(BoolLeafNodeType::DIM) - 1; + } + + const Index xPos = ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM)); + + for (ijk[1] = 0; ijk[1] < int(BoolLeafNodeType::DIM); ++ijk[1]) { + const Index yPos = xPos + (ijk[1] << int(BoolLeafNodeType::LOG2DIM)); + + for (ijk[2] = 0; ijk[2] < int(BoolLeafNodeType::DIM); ++ijk[2]) { + const Index pos = yPos + ijk[2]; + + if (valueMask[pos] == 0 && node.isValueOn(pos)) { + + nijk = origin + ijk.offsetBy(step, 0, 0); + + if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + } + + // If UpWind is true check the Y+ oriented node face, else the Y- oriented face. + template + void evalExternalNeighborsY(char* valueMask, const BoolLeafNodeType& node, + const tree::ValueAccessor& maskAcc, + const tree::ValueAccessor& distAcc) const { + + const Coord& origin = node.origin(); + Coord ijk(0, 0, 0), nijk; + int step = -1; + + if (UpWind) { + step = 1; + ijk[1] = int(BoolLeafNodeType::DIM) - 1; + } + + const Index yPos = ijk[1] << int(BoolLeafNodeType::LOG2DIM); + + for (ijk[0] = 0; ijk[0] < int(BoolLeafNodeType::DIM); ++ijk[0]) { + const Index xPos = yPos + (ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM))); + + for (ijk[2] = 0; ijk[2] < int(BoolLeafNodeType::DIM); ++ijk[2]) { + const Index pos = xPos + ijk[2]; + + if (valueMask[pos] == 0 && node.isValueOn(pos)) { + + nijk = origin + ijk.offsetBy(0, step, 0); + if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + } + + // If UpWind is true check the Z+ oriented node face, else the Z- oriented face. + template + void evalExternalNeighborsZ(char* valueMask, const BoolLeafNodeType& node, + const tree::ValueAccessor& maskAcc, + const tree::ValueAccessor& distAcc) const { + + const Coord& origin = node.origin(); + Coord ijk(0, 0, 0), nijk; + int step = -1; + + if (UpWind) { + step = 1; + ijk[2] = int(BoolLeafNodeType::DIM) - 1; + } + + for (ijk[0] = 0; ijk[0] < int(BoolLeafNodeType::DIM); ++ijk[0]) { + const Index xPos = ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM)); + + for (ijk[1] = 0; ijk[1] < int(BoolLeafNodeType::DIM); ++ijk[1]) { + const Index pos = ijk[2] + xPos + (ijk[1] << int(BoolLeafNodeType::LOG2DIM)); + + if (valueMask[pos] == 0 && node.isValueOn(pos)) { + + nijk = origin + ijk.offsetBy(0, 0, step); + if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) { + valueMask[pos] = 1; + } + } + } + } + } + + ////////// + + TreeType const * const mTree; + BoolTreeType const * const mFillMask; + BoolLeafNodeType const * const * const mFillNodes; + BoolLeafNodeType ** const mNewNodes; + ValueType const mIsovalue; +}; // FillMaskBoundary + + +/// @brief Constructs a memory light char tree that represents the exterior region with @c +1 +/// and the interior regions with @c -1. +template +inline typename TreeType::template ValueConverter::Type::Ptr +computeEnclosedRegionMask(const TreeType& tree, typename TreeType::ValueType isovalue, + const typename TreeType::template ValueConverter::Type* fillMask) +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at>::type; + + using CharTreeType = typename TreeType::template ValueConverter::Type; + using CharLeafNodeType = typename CharTreeType::LeafNodeType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + const TreeType* treePt = &tree; + + size_t numLeafNodes = 0, numInternalNodes = 0; + + std::vector nodes; + std::vector leafnodeCount; + + { + // compute the prefix sum of the leafnode count in each internal node. + std::vector internalNodes; + treePt->getNodes(internalNodes); + + numInternalNodes = internalNodes.size(); + + leafnodeCount.push_back(0); + for (size_t n = 0; n < numInternalNodes; ++n) { + leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount()); + } + + numLeafNodes = leafnodeCount.back(); + + // extract all leafnodes + nodes.reserve(numLeafNodes); + + for (size_t n = 0; n < numInternalNodes; ++n) { + internalNodes[n]->getNodes(nodes); + } + } + + // create mask leafnodes + std::unique_ptr maskNodes(new CharLeafNodeType*[numLeafNodes]); + + tbb::parallel_for(tbb::blocked_range(0, numLeafNodes), + LabelBoundaryVoxels(isovalue, &nodes[0], maskNodes.get())); + + // create mask grid + typename CharTreeType::Ptr maskTree(new CharTreeType(1)); + + PopulateTree populate(*maskTree, maskNodes.get(), &leafnodeCount[0], 1); + tbb::parallel_reduce(tbb::blocked_range(0, numInternalNodes), populate); + + // optionally evaluate the fill mask + + std::vector extraMaskNodes; + + if (fillMask) { + + std::vector fillMaskNodes; + fillMask->getNodes(fillMaskNodes); + + std::unique_ptr boundaryMaskNodes( + new BoolLeafNodeType*[fillMaskNodes.size()]); + + tbb::parallel_for(tbb::blocked_range(0, fillMaskNodes.size()), + FillMaskBoundary(tree, isovalue, *fillMask, &fillMaskNodes[0], + boundaryMaskNodes.get())); + + tree::ValueAccessor maskAcc(*maskTree); + + for (size_t n = 0, N = fillMaskNodes.size(); n < N; ++n) { + + if (boundaryMaskNodes[n] == nullptr) continue; + + const BoolLeafNodeType& boundaryNode = *boundaryMaskNodes[n]; + const Coord& origin = boundaryNode.origin(); + + CharLeafNodeType* maskNodePt = maskAcc.probeLeaf(origin); + + if (!maskNodePt) { + maskNodePt = maskAcc.touchLeaf(origin); + extraMaskNodes.push_back(maskNodePt); + } + + char* data = maskNodePt->buffer().data(); + + typename BoolLeafNodeType::ValueOnCIter it = boundaryNode.cbeginValueOn(); + for (; it; ++it) { + if (data[it.pos()] != 0) data[it.pos()] = -1; + } + + delete boundaryMaskNodes[n]; + } + } + + // eliminate enclosed regions + tools::traceExteriorBoundaries(*maskTree); + + // flip voxel sign to negative inside and positive outside. + tbb::parallel_for(tbb::blocked_range(0, numLeafNodes), + FlipRegionSign(maskNodes.get())); + + if (!extraMaskNodes.empty()) { + tbb::parallel_for(tbb::blocked_range(0, extraMaskNodes.size()), + FlipRegionSign(&extraMaskNodes[0])); + } + + // propagate sign information into tile region + tools::signedFloodFill(*maskTree); + + return maskTree; +} // computeEnclosedRegionMask() + + +template +inline typename TreeType::template ValueConverter::Type::Ptr +computeInteriorMask(const TreeType& tree, typename TreeType::ValueType iso) +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at >::type; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + using BoolRootNodeType = typename BoolTreeType::RootNodeType; + using BoolNodeChainType = typename BoolRootNodeType::NodeChainType; + using BoolInternalNodeType = + typename boost::mpl::at>::type; + + ///// + + // Clamp the isovalue to the level set's background value minus epsilon. + // (In a valid narrow-band level set, all voxels, including background voxels, + // have values less than or equal to the background value, so an isovalue + // greater than or equal to the background value would produce a mask with + // effectively infinite extent.) + iso = std::min(iso, + static_cast(tree.background() - math::Tolerance::value())); + + size_t numLeafNodes = 0, numInternalNodes = 0; + + std::vector nodes; + std::vector leafnodeCount; + + { + // compute the prefix sum of the leafnode count in each internal node. + std::vector internalNodes; + tree.getNodes(internalNodes); + + numInternalNodes = internalNodes.size(); + + leafnodeCount.push_back(0); + for (size_t n = 0; n < numInternalNodes; ++n) { + leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount()); + } + + numLeafNodes = leafnodeCount.back(); + + // extract all leafnodes + nodes.reserve(numLeafNodes); + + for (size_t n = 0; n < numInternalNodes; ++n) { + internalNodes[n]->getNodes(nodes); + } + } + + // create mask leafnodes + std::unique_ptr maskNodes(new BoolLeafNodeType*[numLeafNodes]); + + tbb::parallel_for(tbb::blocked_range(0, numLeafNodes), + MaskInteriorVoxels(iso, &nodes[0], maskNodes.get())); + + + // create mask grid + typename BoolTreeType::Ptr maskTree(new BoolTreeType(false)); + + PopulateTree populate(*maskTree, maskNodes.get(), &leafnodeCount[0], false); + tbb::parallel_reduce(tbb::blocked_range(0, numInternalNodes), populate); + + + // evaluate tile values + std::vector internalMaskNodes; + maskTree->getNodes(internalMaskNodes); + + tbb::parallel_for(tbb::blocked_range(0, internalMaskNodes.size()), + MaskInteriorTiles(iso, tree, &internalMaskNodes[0])); + + tree::ValueAccessor acc(tree); + + typename BoolTreeType::ValueAllIter it(*maskTree); + it.setMaxDepth(BoolTreeType::ValueAllIter::LEAF_DEPTH - 2); + + for ( ; it; ++it) { + if (acc.getValue(it.getCoord()) < iso) { + it.setValue(true); + it.setActiveState(true); + } + } + + return maskTree; +} // computeInteriorMask() + + +template +struct MaskIsovalueCrossingVoxels +{ + using InputValueType = typename InputTreeType::ValueType; + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MaskIsovalueCrossingVoxels( + const InputTreeType& inputTree, + const std::vector& inputLeafNodes, + BoolTreeType& maskTree, + InputValueType iso) + : mInputAccessor(inputTree) + , mInputNodes(!inputLeafNodes.empty() ? &inputLeafNodes.front() : nullptr) + , mMaskTree(false) + , mMaskAccessor(maskTree) + , mIsovalue(iso) + { + } + + MaskIsovalueCrossingVoxels(MaskIsovalueCrossingVoxels& rhs, tbb::split) + : mInputAccessor(rhs.mInputAccessor.tree()) + , mInputNodes(rhs.mInputNodes) + , mMaskTree(false) + , mMaskAccessor(mMaskTree) + , mIsovalue(rhs.mIsovalue) + { + } + + void operator()(const tbb::blocked_range& range) { + + const InputValueType iso = mIsovalue; + Coord ijk(0, 0, 0); + + BoolLeafNodeType* maskNodePt = nullptr; + + for (size_t n = range.begin(); mInputNodes && (n != range.end()); ++n) { + + const InputLeafNodeType& node = *mInputNodes[n]; + + if (!maskNodePt) maskNodePt = new BoolLeafNodeType(node.origin(), false); + else maskNodePt->setOrigin(node.origin()); + + bool collectedData = false; + + for (typename InputLeafNodeType::ValueOnCIter it = node.cbeginValueOn(); it; ++it) { + + bool isUnder = *it < iso; + + ijk = it.getCoord(); + + ++ijk[2]; + bool signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +z edge + --ijk[2]; + + if (!signChange) { + --ijk[2]; + signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -z edge + ++ijk[2]; + } + + if (!signChange) { + ++ijk[1]; + signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +y edge + --ijk[1]; + } + + if (!signChange) { + --ijk[1]; + signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -y edge + ++ijk[1]; + } + + if (!signChange) { + ++ijk[0]; + signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +x edge + --ijk[0]; + } + + if (!signChange) { + --ijk[0]; + signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -x edge + ++ijk[0]; + } + + if (signChange) { + collectedData = true; + maskNodePt->setValueOn(it.pos(), true); + } + } + + if (collectedData) { + mMaskAccessor.addLeaf(maskNodePt); + maskNodePt = nullptr; + } + } + + if (maskNodePt) delete maskNodePt; + } + + void join(MaskIsovalueCrossingVoxels& rhs) { + mMaskAccessor.tree().merge(rhs.mMaskAccessor.tree()); + } + +private: + tree::ValueAccessor mInputAccessor; + InputLeafNodeType const * const * const mInputNodes; + + BoolTreeType mMaskTree; + tree::ValueAccessor mMaskAccessor; + + InputValueType mIsovalue; +}; // MaskIsovalueCrossingVoxels + + +//////////////////////////////////////// + + +template +struct NodeMaskSegment +{ + using Ptr = SharedPtr; + using NodeMaskType = typename NodeType::NodeMaskType; + + NodeMaskSegment() : connections(), mask(false), origin(0,0,0), visited(false) {} + + std::vector connections; + NodeMaskType mask; + Coord origin; + bool visited; +}; // struct NodeMaskSegment + + +template +inline void +nodeMaskSegmentation(const NodeType& node, + std::vector::Ptr>& segments) +{ + using NodeMaskType = typename NodeType::NodeMaskType; + using NodeMaskSegmentType = NodeMaskSegment; + using NodeMaskSegmentTypePtr = typename NodeMaskSegmentType::Ptr; + + NodeMaskType nodeMask(node.getValueMask()); + std::deque indexList; + + while (!nodeMask.isOff()) { + + NodeMaskSegmentTypePtr segment(new NodeMaskSegmentType()); + segment->origin = node.origin(); + + NodeMaskType& mask = segment->mask; + + indexList.push_back(nodeMask.findFirstOn()); + nodeMask.setOff(indexList.back()); // mark as visited + Coord ijk(0, 0, 0); + + while (!indexList.empty()) { + + const Index pos = indexList.back(); + indexList.pop_back(); + + if (mask.isOn(pos)) continue; + mask.setOn(pos); + + ijk = NodeType::offsetToLocalCoord(pos); + + Index npos = pos - 1; + if (ijk[2] != 0 && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + 1; + if (ijk[2] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos - NodeType::DIM; + if (ijk[1] != 0 && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + NodeType::DIM; + if (ijk[1] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos - NodeType::DIM * NodeType::DIM; + if (ijk[0] != 0 && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + NodeType::DIM * NodeType::DIM; + if (ijk[0] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) { + nodeMask.setOff(npos); + indexList.push_back(npos); + } + + } + + segments.push_back(segment); + } +} + + +template +struct SegmentNodeMask +{ + using NodeMaskSegmentType = NodeMaskSegment; + using NodeMaskSegmentTypePtr = typename NodeMaskSegmentType::Ptr; + using NodeMaskSegmentVector = typename std::vector; + + SegmentNodeMask(std::vector& nodes, NodeMaskSegmentVector* nodeMaskArray) + : mNodes(!nodes.empty() ? &nodes.front() : nullptr) + , mNodeMaskArray(nodeMaskArray) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + NodeType& node = *mNodes[n]; + nodeMaskSegmentation(node, mNodeMaskArray[n]); + + // hack origin data to store array offset + Coord& origin = const_cast(node.origin()); + origin[0] = static_cast(n); + } + } + + NodeType * const * const mNodes; + NodeMaskSegmentVector * const mNodeMaskArray; +}; // struct SegmentNodeMask + + +template +struct ConnectNodeMaskSegments +{ + using NodeMaskType = typename NodeType::NodeMaskType; + using NodeMaskSegmentType = NodeMaskSegment; + using NodeMaskSegmentTypePtr = typename NodeMaskSegmentType::Ptr; + using NodeMaskSegmentVector = typename std::vector; + + ConnectNodeMaskSegments(const TreeType& tree, NodeMaskSegmentVector* nodeMaskArray) + : mTree(&tree) + , mNodeMaskArray(nodeMaskArray) + { + } + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor acc(*mTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + NodeMaskSegmentVector& segments = mNodeMaskArray[n]; + if (segments.empty()) continue; + + std::vector > connections(segments.size()); + + Coord ijk = segments[0]->origin; + + const NodeType* node = acc.template probeConstNode(ijk); + if (!node) continue; + + // get neighbour nodes + + ijk[2] += NodeType::DIM; + const NodeType* nodeZUp = acc.template probeConstNode(ijk); + ijk[2] -= (NodeType::DIM + NodeType::DIM); + const NodeType* nodeZDown = acc.template probeConstNode(ijk); + ijk[2] += NodeType::DIM; + + ijk[1] += NodeType::DIM; + const NodeType* nodeYUp = acc.template probeConstNode(ijk); + ijk[1] -= (NodeType::DIM + NodeType::DIM); + const NodeType* nodeYDown = acc.template probeConstNode(ijk); + ijk[1] += NodeType::DIM; + + ijk[0] += NodeType::DIM; + const NodeType* nodeXUp = acc.template probeConstNode(ijk); + ijk[0] -= (NodeType::DIM + NodeType::DIM); + const NodeType* nodeXDown = acc.template probeConstNode(ijk); + ijk[0] += NodeType::DIM; + + const Index startPos = node->getValueMask().findFirstOn(); + for (Index pos = startPos; pos < NodeMaskType::SIZE; ++pos) { + + if (!node->isValueOn(pos)) continue; + + ijk = NodeType::offsetToLocalCoord(pos); + +#ifdef _MSC_FULL_VER + #if _MSC_FULL_VER >= 190000000 && _MSC_FULL_VER < 190024210 + // Visual Studio 2015 had a codegen bug that wasn't fixed until Update 3 + volatile Index npos = 0; + #else + Index npos = 0; + #endif +#else + Index npos = 0; +#endif + + if (ijk[2] == 0) { + npos = pos + (NodeType::DIM - 1); + if (nodeZDown && nodeZDown->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeZDown)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } else if (ijk[2] == (NodeType::DIM - 1)) { + npos = pos - (NodeType::DIM - 1); + if (nodeZUp && nodeZUp->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeZUp)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } + + if (ijk[1] == 0) { + npos = pos + (NodeType::DIM - 1) * NodeType::DIM; + if (nodeYDown && nodeYDown->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeYDown)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } else if (ijk[1] == (NodeType::DIM - 1)) { + npos = pos - (NodeType::DIM - 1) * NodeType::DIM; + if (nodeYUp && nodeYUp->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeYUp)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } + + if (ijk[0] == 0) { + npos = pos + (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM; + if (nodeXDown && nodeXDown->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeXDown)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } else if (ijk[0] == (NodeType::DIM - 1)) { + npos = pos - (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM; + if (nodeXUp && nodeXUp->isValueOn(npos)) { + NodeMaskSegmentType* nsegment = + findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeXUp)], npos); + const Index idx = findNodeMaskSegmentIndex(segments, pos); + connections[idx].insert(nsegment); + } + } + } + + for (size_t i = 0, I = connections.size(); i < I; ++i) { + + typename std::set::iterator + it = connections[i].begin(), end = connections[i].end(); + + std::vector& segmentConnections = segments[i]->connections; + segmentConnections.reserve(connections.size()); + for (; it != end; ++it) { + segmentConnections.push_back(*it); + } + } + } // end range loop + } + +private: + + static inline size_t getNodeOffset(const NodeType& node) { + return static_cast(node.origin()[0]); + } + + static inline NodeMaskSegmentType* + findNodeMaskSegment(NodeMaskSegmentVector& segments, Index pos) + { + NodeMaskSegmentType* segment = nullptr; + + for (size_t n = 0, N = segments.size(); n < N; ++n) { + if (segments[n]->mask.isOn(pos)) { + segment = segments[n].get(); + break; + } + } + + return segment; + } + + static inline Index + findNodeMaskSegmentIndex(NodeMaskSegmentVector& segments, Index pos) + { + for (Index n = 0, N = Index(segments.size()); n < N; ++n) { + if (segments[n]->mask.isOn(pos)) return n; + } + return Index(-1); + } + + TreeType const * const mTree; + NodeMaskSegmentVector * const mNodeMaskArray; +}; // struct ConnectNodeMaskSegments + + +template +struct MaskSegmentGroup +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using TreeTypePtr = typename TreeType::Ptr; + using NodeMaskSegmentType = NodeMaskSegment; + + MaskSegmentGroup(const std::vector& segments) + : mSegments(!segments.empty() ? &segments.front() : nullptr) + , mTree(new TreeType(false)) + { + } + + MaskSegmentGroup(const MaskSegmentGroup& rhs, tbb::split) + : mSegments(rhs.mSegments) + , mTree(new TreeType(false)) + { + } + + TreeTypePtr& mask() { return mTree; } + + void join(MaskSegmentGroup& rhs) { mTree->merge(*rhs.mTree); } + + void operator()(const tbb::blocked_range& range) { + + tree::ValueAccessor acc(*mTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + NodeMaskSegmentType& segment = *mSegments[n]; + LeafNodeType* node = acc.touchLeaf(segment.origin); + node->getValueMask() |= segment.mask; + } + } + +private: + NodeMaskSegmentType * const * const mSegments; + TreeTypePtr mTree; +}; // struct MaskSegmentGroup + + +//////////////////////////////////////// + + +template +struct ExpandLeafNodeRegion +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using NodeMaskType = typename LeafNodeType::NodeMaskType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + ///// + + ExpandLeafNodeRegion(const TreeType& distTree, BoolTreeType& maskTree, + std::vector& maskNodes) + : mDistTree(&distTree) + , mMaskTree(&maskTree) + , mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : nullptr) + , mNewMaskTree(false) + { + } + + ExpandLeafNodeRegion(const ExpandLeafNodeRegion& rhs, tbb::split) + : mDistTree(rhs.mDistTree) + , mMaskTree(rhs.mMaskTree) + , mMaskNodes(rhs.mMaskNodes) + , mNewMaskTree(false) + { + } + + BoolTreeType& newMaskTree() { return mNewMaskTree; } + + void join(ExpandLeafNodeRegion& rhs) { mNewMaskTree.merge(rhs.mNewMaskTree); } + + void operator()(const tbb::blocked_range& range) { + + using NodeType = LeafNodeType; + + tree::ValueAccessor distAcc(*mDistTree); + tree::ValueAccessor maskAcc(*mMaskTree); + tree::ValueAccessor newMaskAcc(mNewMaskTree); + + NodeMaskType maskZUp, maskZDown, maskYUp, maskYDown, maskXUp, maskXDown; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + BoolLeafNodeType& maskNode = *mMaskNodes[n]; + if (maskNode.isEmpty()) continue; + + Coord ijk = maskNode.origin(), nijk; + + const LeafNodeType* distNode = distAcc.probeConstLeaf(ijk); + if (!distNode) continue; + + const ValueType *dataZUp = nullptr, *dataZDown = nullptr, + *dataYUp = nullptr, *dataYDown = nullptr, + *dataXUp = nullptr, *dataXDown = nullptr; + + ijk[2] += NodeType::DIM; + getData(ijk, distAcc, maskAcc, maskZUp, dataZUp); + ijk[2] -= (NodeType::DIM + NodeType::DIM); + getData(ijk, distAcc, maskAcc, maskZDown, dataZDown); + ijk[2] += NodeType::DIM; + + ijk[1] += NodeType::DIM; + getData(ijk, distAcc, maskAcc, maskYUp, dataYUp); + ijk[1] -= (NodeType::DIM + NodeType::DIM); + getData(ijk, distAcc, maskAcc, maskYDown, dataYDown); + ijk[1] += NodeType::DIM; + + ijk[0] += NodeType::DIM; + getData(ijk, distAcc, maskAcc, maskXUp, dataXUp); + ijk[0] -= (NodeType::DIM + NodeType::DIM); + getData(ijk, distAcc, maskAcc, maskXDown, dataXDown); + ijk[0] += NodeType::DIM; + + for (typename BoolLeafNodeType::ValueOnIter it = maskNode.beginValueOn(); it; ++it) { + + const Index pos = it.pos(); + const ValueType val = std::abs(distNode->getValue(pos)); + + ijk = BoolLeafNodeType::offsetToLocalCoord(pos); + nijk = ijk + maskNode.origin(); + + if (dataZUp && ijk[2] == (BoolLeafNodeType::DIM - 1)) { + const Index npos = pos - (NodeType::DIM - 1); + if (maskZUp.isOn(npos) && std::abs(dataZUp[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(0, 0, 1)); + } + } else if (dataZDown && ijk[2] == 0) { + const Index npos = pos + (NodeType::DIM - 1); + if (maskZDown.isOn(npos) && std::abs(dataZDown[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(0, 0, -1)); + } + } + + if (dataYUp && ijk[1] == (BoolLeafNodeType::DIM - 1)) { + const Index npos = pos - (NodeType::DIM - 1) * NodeType::DIM; + if (maskYUp.isOn(npos) && std::abs(dataYUp[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(0, 1, 0)); + } + } else if (dataYDown && ijk[1] == 0) { + const Index npos = pos + (NodeType::DIM - 1) * NodeType::DIM; + if (maskYDown.isOn(npos) && std::abs(dataYDown[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(0, -1, 0)); + } + } + + if (dataXUp && ijk[0] == (BoolLeafNodeType::DIM - 1)) { + const Index npos = pos - (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM; + if (maskXUp.isOn(npos) && std::abs(dataXUp[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(1, 0, 0)); + } + } else if (dataXDown && ijk[0] == 0) { + const Index npos = pos + (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM; + if (maskXDown.isOn(npos) && std::abs(dataXDown[npos]) > val) { + newMaskAcc.setValueOn(nijk.offsetBy(-1, 0, 0)); + } + } + + } // end value on loop + } // end range loop + } + +private: + + static inline void + getData(const Coord& ijk, tree::ValueAccessor& distAcc, + tree::ValueAccessor& maskAcc, NodeMaskType& mask, + const ValueType*& data) + { + const LeafNodeType* node = distAcc.probeConstLeaf(ijk); + if (node) { + data = node->buffer().data(); + mask = node->getValueMask(); + const BoolLeafNodeType* maskNodePt = maskAcc.probeConstLeaf(ijk); + if (maskNodePt) mask -= maskNodePt->getValueMask(); + } + } + + TreeType const * const mDistTree; + BoolTreeType * const mMaskTree; + BoolLeafNodeType ** const mMaskNodes; + + BoolTreeType mNewMaskTree; +}; // struct ExpandLeafNodeRegion + + +template +struct FillLeafNodeVoxels +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using NodeMaskType = typename LeafNodeType::NodeMaskType; + using BoolLeafNodeType = tree::LeafNode; + + FillLeafNodeVoxels(const TreeType& tree, std::vector& maskNodes) + : mTree(&tree), mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : nullptr) + { + } + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor distAcc(*mTree); + + std::vector indexList; + indexList.reserve(NodeMaskType::SIZE); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + BoolLeafNodeType& maskNode = *mMaskNodes[n]; + + const LeafNodeType * distNode = distAcc.probeConstLeaf(maskNode.origin()); + if (!distNode) continue; + + NodeMaskType mask(distNode->getValueMask()); + NodeMaskType& narrowbandMask = maskNode.getValueMask(); + + for (Index pos = narrowbandMask.findFirstOn(); pos < NodeMaskType::SIZE; ++pos) { + if (narrowbandMask.isOn(pos)) indexList.push_back(pos); + } + + mask -= narrowbandMask; // bitwise difference + narrowbandMask.setOff(); + + const ValueType* data = distNode->buffer().data(); + Coord ijk(0, 0, 0); + + while (!indexList.empty()) { + + const Index pos = indexList.back(); + indexList.pop_back(); + + if (narrowbandMask.isOn(pos)) continue; + narrowbandMask.setOn(pos); + + const ValueType dist = std::abs(data[pos]); + + ijk = LeafNodeType::offsetToLocalCoord(pos); + + Index npos = pos - 1; + if (ijk[2] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) { + mask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + 1; + if ((ijk[2] != (LeafNodeType::DIM - 1)) && mask.isOn(npos) + && std::abs(data[npos]) > dist) + { + mask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos - LeafNodeType::DIM; + if (ijk[1] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) { + mask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + LeafNodeType::DIM; + if ((ijk[1] != (LeafNodeType::DIM - 1)) && mask.isOn(npos) + && std::abs(data[npos]) > dist) + { + mask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos - LeafNodeType::DIM * LeafNodeType::DIM; + if (ijk[0] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) { + mask.setOff(npos); + indexList.push_back(npos); + } + + npos = pos + LeafNodeType::DIM * LeafNodeType::DIM; + if ((ijk[0] != (LeafNodeType::DIM - 1)) && mask.isOn(npos) + && std::abs(data[npos]) > dist) + { + mask.setOff(npos); + indexList.push_back(npos); + } + } // end flood fill loop + } // end range loop + } + + TreeType const * const mTree; + BoolLeafNodeType ** const mMaskNodes; +}; // FillLeafNodeVoxels + + +template +struct ExpandNarrowbandMask +{ + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + using BoolTreeTypePtr = typename BoolTreeType::Ptr; + + ExpandNarrowbandMask(const TreeType& tree, std::vector& segments) + : mTree(&tree), mSegments(!segments.empty() ? &segments.front() : nullptr) + { + } + + void operator()(const tbb::blocked_range& range) const { + + const TreeType& distTree = *mTree; + std::vector nodes; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + BoolTreeType& narrowBandMask = *mSegments[n]; + + BoolTreeType candidateMask(narrowBandMask, false, TopologyCopy()); + + while (true) { + + nodes.clear(); + candidateMask.getNodes(nodes); + if (nodes.empty()) break; + + const tbb::blocked_range nodeRange(0, nodes.size()); + + tbb::parallel_for(nodeRange, FillLeafNodeVoxels(distTree, nodes)); + + narrowBandMask.topologyUnion(candidateMask); + + ExpandLeafNodeRegion op(distTree, narrowBandMask, nodes); + tbb::parallel_reduce(nodeRange, op); + + if (op.newMaskTree().empty()) break; + + candidateMask.clear(); + candidateMask.merge(op.newMaskTree()); + } // end expand loop + } // end range loop + } + + TreeType const * const mTree; + BoolTreeTypePtr * const mSegments; +}; // ExpandNarrowbandMask + + +template +struct FloodFillSign +{ + using TreeTypePtr = typename TreeType::Ptr; + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at >::type; + + FloodFillSign(const TreeType& tree, std::vector& segments) + : mTree(&tree) + , mSegments(!segments.empty() ? &segments.front() : nullptr) + , mMinValue(ValueType(0.0)) + { + ValueType minSDFValue = std::numeric_limits::max(); + + { + std::vector nodes; + tree.getNodes(nodes); + + if (!nodes.empty()) { + FindMinTileValue minOp(&nodes[0]); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), minOp); + minSDFValue = std::min(minSDFValue, minOp.minValue); + } + } + + if (minSDFValue > ValueType(0.0)) { + std::vector nodes; + tree.getNodes(nodes); + if (!nodes.empty()) { + FindMinVoxelValue minOp(&nodes[0]); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), minOp); + minSDFValue = std::min(minSDFValue, minOp.minValue); + } + } + + mMinValue = minSDFValue; + } + + void operator()(const tbb::blocked_range& range) const { + const ValueType interiorValue = -std::abs(mMinValue); + const ValueType exteriorValue = std::abs(mTree->background()); + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + tools::signedFloodFillWithValues(*mSegments[n], exteriorValue, interiorValue); + } + } + +private: + + TreeType const * const mTree; + TreeTypePtr * const mSegments; + ValueType mMinValue; +}; // FloodFillSign + + +template +struct MaskedCopy +{ + using TreeTypePtr = typename TreeType::Ptr; + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolTreeTypePtr = typename BoolTreeType::Ptr; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MaskedCopy(const TreeType& tree, std::vector& segments, + std::vector& masks) + : mTree(&tree) + , mSegments(!segments.empty() ? &segments.front() : nullptr) + , mMasks(!masks.empty() ? &masks.front() : nullptr) + { + } + + void operator()(const tbb::blocked_range& range) const { + + std::vector nodes; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const BoolTreeType& mask = *mMasks[n]; + + nodes.clear(); + mask.getNodes(nodes); + + Copy op(*mTree, nodes); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), op); + mSegments[n] = op.outputTree(); + } + } + +private: + + struct Copy { + Copy(const TreeType& inputTree, std::vector& maskNodes) + : mInputTree(&inputTree) + , mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : nullptr) + , mOutputTreePtr(new TreeType(inputTree.background())) + { + } + + Copy(const Copy& rhs, tbb::split) + : mInputTree(rhs.mInputTree) + , mMaskNodes(rhs.mMaskNodes) + , mOutputTreePtr(new TreeType(mInputTree->background())) + { + } + + TreeTypePtr& outputTree() { return mOutputTreePtr; } + + void join(Copy& rhs) { mOutputTreePtr->merge(*rhs.mOutputTreePtr); } + + void operator()(const tbb::blocked_range& range) { + + tree::ValueAccessor inputAcc(*mInputTree); + tree::ValueAccessor outputAcc(*mOutputTreePtr); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const BoolLeafNodeType& maskNode = *mMaskNodes[n]; + if (maskNode.isEmpty()) continue; + + const Coord& ijk = maskNode.origin(); + + const LeafNodeType* inputNode = inputAcc.probeConstLeaf(ijk); + if (inputNode) { + + LeafNodeType* outputNode = outputAcc.touchLeaf(ijk); + + for (typename BoolLeafNodeType::ValueOnCIter it = maskNode.cbeginValueOn(); + it; ++it) + { + const Index idx = it.pos(); + outputNode->setValueOn(idx, inputNode->getValue(idx)); + } + } else { + const int valueDepth = inputAcc.getValueDepth(ijk); + if (valueDepth >= 0) { + outputAcc.addTile(TreeType::RootNodeType::LEVEL - valueDepth, + ijk, inputAcc.getValue(ijk), true); + } + } + } + } + + private: + TreeType const * const mInputTree; + BoolLeafNodeType const * const * const mMaskNodes; + TreeTypePtr mOutputTreePtr; + }; // struct Copy + + TreeType const * const mTree; + TreeTypePtr * const mSegments; + BoolTreeTypePtr * const mMasks; +}; // MaskedCopy + + +//////////////////////////////////////// + + +template +struct ComputeActiveVoxelCount +{ + ComputeActiveVoxelCount(std::vector& segments, size_t *countArray) + : mSegments(!segments.empty() ? &segments.front() : nullptr) + , mCountArray(countArray) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + mCountArray[n] = mSegments[n]->activeVoxelCount(); + } + } + + VolumePtrType * const mSegments; + size_t * const mCountArray; +}; + + +struct GreaterCount +{ + GreaterCount(const size_t *countArray) : mCountArray(countArray) {} + + inline bool operator() (const size_t& lhs, const size_t& rhs) const + { + return (mCountArray[lhs] > mCountArray[rhs]); + } + + size_t const * const mCountArray; +}; + +//////////////////////////////////////// + + +template +struct GridOrTreeConstructor +{ + using TreeTypePtr = typename TreeType::Ptr; + using BoolTreePtrType = typename TreeType::template ValueConverter::Type::Ptr; + + static BoolTreePtrType constructMask(const TreeType&, BoolTreePtrType& maskTree) + { return maskTree; } + static TreeTypePtr construct(const TreeType&, TreeTypePtr& tree) { return tree; } +}; + + +template +struct GridOrTreeConstructor > +{ + using GridType = Grid; + using GridTypePtr = typename Grid::Ptr; + using TreeTypePtr = typename TreeType::Ptr; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolTreePtrType = typename BoolTreeType::Ptr; + using BoolGridType = Grid; + using BoolGridPtrType = typename BoolGridType::Ptr; + + static BoolGridPtrType constructMask(const GridType& grid, BoolTreePtrType& maskTree) { + BoolGridPtrType maskGrid(BoolGridType::create(maskTree)); + maskGrid->setTransform(grid.transform().copy()); + return maskGrid; + } + + static GridTypePtr construct(const GridType& grid, TreeTypePtr& maskTree) { + GridTypePtr maskGrid(GridType::create(maskTree)); + maskGrid->setTransform(grid.transform().copy()); + maskGrid->insertMeta(grid); + return maskGrid; + } +}; + + +} // namespace level_set_util_internal + + +//////////////////////////////////////// + + +template +inline void +sdfToFogVolume(GridType& grid, typename GridType::ValueType cutoffDistance) +{ + using ValueType = typename GridType::ValueType; + using TreeType = typename GridType::TreeType; + using LeafNodeType = typename TreeType::LeafNodeType; + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at>::type; + + ////////// + + TreeType& tree = grid.tree(); + + size_t numLeafNodes = 0, numInternalNodes = 0; + + std::vector nodes; + std::vector leafnodeCount; + + { + // Compute the prefix sum of the leafnode count in each internal node. + std::vector internalNodes; + tree.getNodes(internalNodes); + + numInternalNodes = internalNodes.size(); + + leafnodeCount.push_back(0); + for (size_t n = 0; n < numInternalNodes; ++n) { + leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount()); + } + + numLeafNodes = leafnodeCount.back(); + + // Steal all leafnodes (Removes them from the tree and transfers ownership.) + nodes.reserve(numLeafNodes); + + for (size_t n = 0; n < numInternalNodes; ++n) { + internalNodes[n]->stealNodes(nodes, tree.background(), false); + } + + // Clamp cutoffDistance to min sdf value + ValueType minSDFValue = std::numeric_limits::max(); + + { + level_set_util_internal::FindMinTileValue minOp(&internalNodes[0]); + tbb::parallel_reduce(tbb::blocked_range(0, internalNodes.size()), minOp); + minSDFValue = std::min(minSDFValue, minOp.minValue); + } + + if (minSDFValue > ValueType(0.0)) { + level_set_util_internal::FindMinVoxelValue minOp(&nodes[0]); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), minOp); + minSDFValue = std::min(minSDFValue, minOp.minValue); + } + + cutoffDistance = -std::abs(cutoffDistance); + cutoffDistance = minSDFValue > cutoffDistance ? minSDFValue : cutoffDistance; + } + + // Transform voxel values and delete leafnodes that are uniformly zero after the transformation. + // (Positive values are set to zero with inactive state and negative values are remapped + // from zero to one with active state.) + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + level_set_util_internal::SDFVoxelsToFogVolume(&nodes[0], cutoffDistance)); + + // Populate a new tree with the remaining leafnodes + typename TreeType::Ptr newTree(new TreeType(ValueType(0.0))); + + level_set_util_internal::PopulateTree populate( + *newTree, &nodes[0], &leafnodeCount[0], 0); + tbb::parallel_reduce(tbb::blocked_range(0, numInternalNodes), populate); + + // Transform tile values (Negative valued tiles are set to 1.0 with active state.) + std::vector internalNodes; + newTree->getNodes(internalNodes); + + tbb::parallel_for(tbb::blocked_range(0, internalNodes.size()), + level_set_util_internal::SDFTilesToFogVolume( + tree, &internalNodes[0])); + + { + tree::ValueAccessor acc(tree); + + typename TreeType::ValueAllIter it(*newTree); + it.setMaxDepth(TreeType::ValueAllIter::LEAF_DEPTH - 2); + + for ( ; it; ++it) { + if (acc.getValue(it.getCoord()) < ValueType(0.0)) { + it.setValue(ValueType(1.0)); + it.setActiveState(true); + } + } + } + + // Insert missing root level tiles. (The new tree is constructed from the remaining leafnodes + // and will therefore not contain any root level tiles that may exist in the original tree.) + { + typename TreeType::ValueAllIter it(tree); + it.setMaxDepth(TreeType::ValueAllIter::ROOT_DEPTH); + for ( ; it; ++it) { + if (it.getValue() < ValueType(0.0)) { + newTree->addTile(TreeType::ValueAllIter::ROOT_LEVEL, it.getCoord(), + ValueType(1.0), true); + } + } + } + + grid.setTree(newTree); + grid.setGridClass(GRID_FOG_VOLUME); +} + + +//////////////////////////////////////// + + +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +sdfInteriorMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue) +{ + using TreeType = typename TreeAdapter::TreeType; + const TreeType& tree = TreeAdapter::tree(volume); + + using BoolTreePtrType = typename TreeType::template ValueConverter::Type::Ptr; + BoolTreePtrType mask = level_set_util_internal::computeInteriorMask(tree, isovalue); + + return level_set_util_internal::GridOrTreeConstructor::constructMask( + volume, mask); +} + + +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +extractEnclosedRegion(const GridOrTreeType& volume, + typename GridOrTreeType::ValueType isovalue, + const typename TreeAdapter::TreeType::template ValueConverter::Type* + fillMask) +{ + using TreeType = typename TreeAdapter::TreeType; + const TreeType& tree = TreeAdapter::tree(volume); + + using CharTreePtrType = typename TreeType::template ValueConverter::Type::Ptr; + CharTreePtrType regionMask = level_set_util_internal::computeEnclosedRegionMask( + tree, isovalue, fillMask); + + using BoolTreePtrType = typename TreeType::template ValueConverter::Type::Ptr; + BoolTreePtrType mask = level_set_util_internal::computeInteriorMask(*regionMask, 0); + + return level_set_util_internal::GridOrTreeConstructor::constructMask( + volume, mask); +} + + +//////////////////////////////////////// + + +template +inline typename GridOrTreeType::template ValueConverter::Type::Ptr +extractIsosurfaceMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue) +{ + using TreeType = typename TreeAdapter::TreeType; + const TreeType& tree = TreeAdapter::tree(volume); + + std::vector nodes; + tree.getNodes(nodes); + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + typename BoolTreeType::Ptr mask(new BoolTreeType(false)); + + level_set_util_internal::MaskIsovalueCrossingVoxels op(tree, nodes, *mask, isovalue); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), op); + + return level_set_util_internal::GridOrTreeConstructor::constructMask( + volume, mask); +} + + +//////////////////////////////////////// + + +template +inline void +extractActiveVoxelSegmentMasks(const GridOrTreeType& volume, + std::vector::Type::Ptr>& masks) +{ + using TreeType = typename TreeAdapter::TreeType; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolTreePtrType = typename BoolTreeType::Ptr; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + using NodeMaskSegmentType = level_set_util_internal::NodeMaskSegment; + using NodeMaskSegmentPtrType = typename NodeMaskSegmentType::Ptr; + using NodeMaskSegmentPtrVector = typename std::vector; + using NodeMaskSegmentRawPtrVector = typename std::vector; + + ///// + + const TreeType& tree = TreeAdapter::tree(volume); + + BoolTreeType topologyMask(tree, false, TopologyCopy()); + + // prune out any inactive leaf nodes or inactive tiles + tools::pruneInactive(topologyMask); + + if (topologyMask.hasActiveTiles()) { + topologyMask.voxelizeActiveTiles(); + } + + std::vector leafnodes; + topologyMask.getNodes(leafnodes); + + if (leafnodes.empty()) return; + + // 1. Split node masks into disjoint segments + // Note: The LeafNode origin coord is modified to record the 'leafnodes' array offset. + + std::unique_ptr nodeSegmentArray( + new NodeMaskSegmentPtrVector[leafnodes.size()]); + + tbb::parallel_for(tbb::blocked_range(0, leafnodes.size()), + level_set_util_internal::SegmentNodeMask( + leafnodes, nodeSegmentArray.get())); + + + // 2. Compute segment connectivity + + tbb::parallel_for(tbb::blocked_range(0, leafnodes.size()), + level_set_util_internal::ConnectNodeMaskSegments( + topologyMask, nodeSegmentArray.get())); + + topologyMask.clear(); + + size_t nodeSegmentCount = 0; + for (size_t n = 0, N = leafnodes.size(); n < N; ++n) { + nodeSegmentCount += nodeSegmentArray[n].size(); + } + + // 3. Group connected segments + + std::deque nodeSegmentGroups; + + NodeMaskSegmentType* nextSegment = nodeSegmentArray[0][0].get(); + while (nextSegment) { + + nodeSegmentGroups.push_back(NodeMaskSegmentRawPtrVector()); + + std::vector& segmentGroup = nodeSegmentGroups.back(); + segmentGroup.reserve(nodeSegmentCount); + + std::deque segmentQueue; + segmentQueue.push_back(nextSegment); + nextSegment = nullptr; + + while (!segmentQueue.empty()) { + + NodeMaskSegmentType* segment = segmentQueue.back(); + segmentQueue.pop_back(); + + if (segment->visited) continue; + segment->visited = true; + + segmentGroup.push_back(segment); + + // queue connected segments + std::vector& connections = segment->connections; + for (size_t n = 0, N = connections.size(); n < N; ++n) { + if (!connections[n]->visited) segmentQueue.push_back(connections[n]); + } + } + + // find first unvisited segment + for (size_t n = 0, N = leafnodes.size(); n < N; ++n) { + NodeMaskSegmentPtrVector& nodeSegments = nodeSegmentArray[n]; + for (size_t i = 0, I = nodeSegments.size(); i < I; ++i) { + if (!nodeSegments[i]->visited) nextSegment = nodeSegments[i].get(); + } + } + } + + // 4. Mask segment groups + + if (nodeSegmentGroups.size() == 1) { + + BoolTreePtrType mask(new BoolTreeType(tree, false, TopologyCopy())); + + tools::pruneInactive(*mask); + + if (mask->hasActiveTiles()) { + mask->voxelizeActiveTiles(); + } + + masks.push_back( + level_set_util_internal::GridOrTreeConstructor::constructMask( + volume, mask)); + + } else if (nodeSegmentGroups.size() > 1) { + + for (size_t n = 0, N = nodeSegmentGroups.size(); n < N; ++n) { + + NodeMaskSegmentRawPtrVector& segmentGroup = nodeSegmentGroups[n]; + + level_set_util_internal::MaskSegmentGroup op(segmentGroup); + tbb::parallel_reduce(tbb::blocked_range(0, segmentGroup.size()), op); + + masks.push_back( + level_set_util_internal::GridOrTreeConstructor::constructMask( + volume, op.mask())); + } + } + + // 5. Sort segments in descending order based on the active voxel count. + + if (masks.size() > 1) { + const size_t segmentCount = masks.size(); + + std::unique_ptr segmentOrderArray(new size_t[segmentCount]); + std::unique_ptr voxelCountArray(new size_t[segmentCount]); + + for (size_t n = 0; n < segmentCount; ++n) { + segmentOrderArray[n] = n; + } + + tbb::parallel_for(tbb::blocked_range(0, segmentCount), + level_set_util_internal::ComputeActiveVoxelCount( + masks, voxelCountArray.get())); + + size_t *begin = segmentOrderArray.get(); + tbb::parallel_sort(begin, begin + masks.size(), level_set_util_internal::GreaterCount( + voxelCountArray.get())); + + std::vector orderedMasks; + orderedMasks.reserve(masks.size()); + + for (size_t n = 0; n < segmentCount; ++n) { + orderedMasks.push_back(masks[segmentOrderArray[n]]); + } + + masks.swap(orderedMasks); + } + +} // extractActiveVoxelSegmentMasks() + + +template +inline void +segmentActiveVoxels(const GridOrTreeType& volume, + std::vector& segments) +{ + using TreeType = typename TreeAdapter::TreeType; + using TreePtrType = typename TreeType::Ptr; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolTreePtrType = typename BoolTreeType::Ptr; + + const TreeType& inputTree = TreeAdapter::tree(volume); + + // 1. Segment active topology mask + std::vector maskSegmentArray; + extractActiveVoxelSegmentMasks(inputTree, maskSegmentArray); + + // 2. Export segments + + const size_t numSegments = std::max(size_t(1), maskSegmentArray.size()); + std::vector outputSegmentArray(numSegments); + + if (maskSegmentArray.empty()) { + // if no active voxels in the original volume, copy just the background + // value of the input tree + outputSegmentArray[0] = TreePtrType(new TreeType(inputTree.background())); + } else if (numSegments == 1) { + // if there's only one segment with active voxels, copy the input tree + TreePtrType segment(new TreeType(inputTree)); + // however, if the leaf counts do not match due to the pruning of inactive leaf + // nodes in the mask, do a topology intersection to drop these inactive leafs + if (segment->leafCount() != inputTree.leafCount()) { + segment->topologyIntersection(*maskSegmentArray[0]); + } + outputSegmentArray[0] = segment; + } else { + const tbb::blocked_range segmentRange(0, numSegments); + tbb::parallel_for(segmentRange, + level_set_util_internal::MaskedCopy(inputTree, outputSegmentArray, + maskSegmentArray)); + } + + for (auto& segment : outputSegmentArray) { + segments.push_back( + level_set_util_internal::GridOrTreeConstructor::construct( + volume, segment)); + } +} + + +template +inline void +segmentSDF(const GridOrTreeType& volume, std::vector& segments) +{ + using TreeType = typename TreeAdapter::TreeType; + using TreePtrType = typename TreeType::Ptr; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolTreePtrType = typename BoolTreeType::Ptr; + + const TreeType& inputTree = TreeAdapter::tree(volume); + + // 1. Mask zero crossing voxels + BoolTreePtrType mask = extractIsosurfaceMask(inputTree, lsutilGridZero()); + + // 2. Segment the zero crossing mask + std::vector maskSegmentArray; + extractActiveVoxelSegmentMasks(*mask, maskSegmentArray); + + const size_t numSegments = std::max(size_t(1), maskSegmentArray.size()); + std::vector outputSegmentArray(numSegments); + + if (maskSegmentArray.empty()) { + // if no active voxels in the original volume, copy just the background + // value of the input tree + outputSegmentArray[0] = TreePtrType(new TreeType(inputTree.background())); + } else { + const tbb::blocked_range segmentRange(0, numSegments); + + // 3. Expand zero crossing mask to capture sdf narrow band + tbb::parallel_for(segmentRange, + level_set_util_internal::ExpandNarrowbandMask(inputTree, maskSegmentArray)); + + // 4. Export sdf segments + + tbb::parallel_for(segmentRange, level_set_util_internal::MaskedCopy( + inputTree, outputSegmentArray, maskSegmentArray)); + + tbb::parallel_for(segmentRange, + level_set_util_internal::FloodFillSign(inputTree, outputSegmentArray)); + } + + for (auto& segment : outputSegmentArray) { + segments.push_back( + level_set_util_internal::GridOrTreeConstructor::construct( + volume, segment)); + } +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Mask.h b/openvdb/tools/Mask.h new file mode 100644 index 00000000..660d8948 --- /dev/null +++ b/openvdb/tools/Mask.h @@ -0,0 +1,123 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file Mask.h +/// +/// @brief Construct boolean mask grids from grids of arbitrary type + +#ifndef OPENVDB_TOOLS_MASK_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_MASK_HAS_BEEN_INCLUDED + +#include +#include "LevelSetUtil.h" // for tools::sdfInteriorMask() +#include // for std::enable_if, std::is_floating_point + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Given an input grid of any type, return a new, boolean grid +/// whose active voxel topology matches the input grid's or, +/// if the input grid is a level set, matches the input grid's interior. +/// @param grid the grid from which to construct a mask +/// @param isovalue for a level set grid, the isovalue that defines the grid's interior +/// @sa tools::sdfInteriorMask() +template +inline typename GridType::template ValueConverter::Type::Ptr +interiorMask(const GridType& grid, const double isovalue = 0.0); + + +//////////////////////////////////////// + + +namespace mask_internal { + +/// @private +template +struct Traits { + static const bool isBool = std::is_same::value; + using BoolGridType = typename GridType::template ValueConverter::Type; + using BoolGridPtrType = typename BoolGridType::Ptr; +}; + + +/// @private +template +inline typename std::enable_if::value, + typename mask_internal::Traits::BoolGridPtrType>::type +doLevelSetInteriorMask(const GridType& grid, const double isovalue) +{ + using GridValueT = typename GridType::ValueType; + using MaskGridPtrT = typename mask_internal::Traits::BoolGridPtrType; + + // If the input grid is a level set (and floating-point), return a mask of its interior. + if (grid.getGridClass() == GRID_LEVEL_SET) { + return tools::sdfInteriorMask(grid, static_cast(isovalue)); + } + return MaskGridPtrT{}; +} + + +/// @private +// No-op specialization for non-floating-point grids +template +inline typename std::enable_if::value, + typename mask_internal::Traits::BoolGridPtrType>::type +doLevelSetInteriorMask(const GridType&, const double /*isovalue*/) +{ + using MaskGridPtrT = typename mask_internal::Traits::BoolGridPtrType; + return MaskGridPtrT{}; +} + + +/// @private +template +inline typename std::enable_if::isBool, + typename mask_internal::Traits::BoolGridPtrType>::type +doInteriorMask(const GridType& grid, const double /*isovalue*/) +{ + // If the input grid is already boolean, return a copy of it. + return grid.deepCopy(); +} + + +/// @private +template +inline typename std::enable_if::isBool), + typename mask_internal::Traits::BoolGridPtrType>::type +doInteriorMask(const GridType& grid, const double isovalue) +{ + using MaskGridT = typename mask_internal::Traits::BoolGridType; + + // If the input grid is a level set, return a mask of its interior. + if (auto maskGridPtr = doLevelSetInteriorMask(grid, isovalue)) { + return maskGridPtr; + } + + // For any other grid type, return a mask of its active voxels. + auto maskGridPtr = MaskGridT::create(/*background=*/false); + maskGridPtr->setTransform(grid.transform().copy()); + maskGridPtr->topologyUnion(grid); + return maskGridPtr; +} + +} // namespace mask_internal + + +template +inline typename GridType::template ValueConverter::Type::Ptr +interiorMask(const GridType& grid, const double isovalue) +{ + return mask_internal::doInteriorMask(grid, isovalue); +} + + +//////////////////////////////////////// + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_MASK_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/MeshToVolume.h b/openvdb/tools/MeshToVolume.h new file mode 100644 index 00000000..2ae35fd4 --- /dev/null +++ b/openvdb/tools/MeshToVolume.h @@ -0,0 +1,4216 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file MeshToVolume.h +/// +/// @brief Convert polygonal meshes that consist of quads and/or triangles +/// into signed or unsigned distance field volumes. +/// +/// @note The signed distance field conversion requires a closed surface +/// but not necessarily a manifold surface. Supports surfaces with +/// self intersections and degenerate faces and is independent of +/// mesh surface normals / polygon orientation. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_MESH_TO_VOLUME_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_MESH_TO_VOLUME_HAS_BEEN_INCLUDED + +#include // for OPENVDB_HAS_CXX11 +#include +#include // for GodunovsNormSqrd +#include // for closestPointOnTriangleToPoint +#include +#include + +#include "ChangeBackground.h" +#include "Prune.h" // for pruneInactive and pruneLevelSet +#include "SignedFloodFill.h" // for signedFloodFillWithValues + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include // for std::sort() +#include // for std::isfinite(), std::isnan() +#include +#include +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +//////////////////////////////////////// + + +/// @brief Mesh to volume conversion flags +enum MeshToVolumeFlags { + + /// Switch from the default signed distance field conversion that classifies + /// regions as either inside or outside the mesh boundary to a unsigned distance + /// field conversion that only computes distance values. This conversion type + /// does not require a closed watertight mesh. + UNSIGNED_DISTANCE_FIELD = 0x1, + + /// Disable the cleanup step that removes voxels created by self intersecting + /// portions of the mesh. + DISABLE_INTERSECTING_VOXEL_REMOVAL = 0x2, + + /// Disable the distance renormalization step that smooths out bumps caused + /// by self intersecting or overlapping portions of the mesh + DISABLE_RENORMALIZATION = 0x4, + + /// Disable the cleanup step that removes active voxels that exceed the + /// narrow band limits. (Only relevant for small limits) + DISABLE_NARROW_BAND_TRIMMING = 0x8 +}; + + +/// @brief Convert polygonal meshes that consist of quads and/or triangles into +/// signed or unsigned distance field volumes. +/// +/// @note Requires a closed surface but not necessarily a manifold surface. +/// Supports surfaces with self intersections and degenerate faces +/// and is independent of mesh surface normals. +/// +/// @interface MeshDataAdapter +/// Expected interface for the MeshDataAdapter class +/// @code +/// struct MeshDataAdapter { +/// size_t polygonCount() const; // Total number of polygons +/// size_t pointCount() const; // Total number of points +/// size_t vertexCount(size_t n) const; // Vertex count for polygon n +/// +/// // Return position pos in local grid index space for polygon n and vertex v +/// void getIndexSpacePoint(size_t n, size_t v, openvdb::Vec3d& pos) const; +/// }; +/// @endcode +/// +/// @param mesh mesh data access class that conforms to the MeshDataAdapter +/// interface +/// @param transform world-to-index-space transform +/// @param exteriorBandWidth exterior narrow band width in voxel units +/// @param interiorBandWidth interior narrow band width in voxel units +/// (set to std::numeric_limits::max() to fill object +/// interior with distance values) +/// @param flags optional conversion flags defined in @c MeshToVolumeFlags +/// @param polygonIndexGrid optional grid output that will contain the closest-polygon +/// index for each voxel in the narrow band region +template +inline typename GridType::Ptr +meshToVolume( + const MeshDataAdapter& mesh, + const math::Transform& transform, + float exteriorBandWidth = 3.0f, + float interiorBandWidth = 3.0f, + int flags = 0, + typename GridType::template ValueConverter::Type * polygonIndexGrid = nullptr); + + +/// @brief Convert polygonal meshes that consist of quads and/or triangles into +/// signed or unsigned distance field volumes. +/// +/// @param interrupter a callback to interrupt the conversion process that conforms +/// to the util::NullInterrupter interface +/// @param mesh mesh data access class that conforms to the MeshDataAdapter +/// interface +/// @param transform world-to-index-space transform +/// @param exteriorBandWidth exterior narrow band width in voxel units +/// @param interiorBandWidth interior narrow band width in voxel units (set this value to +/// std::numeric_limits::max() to fill interior regions +/// with distance values) +/// @param flags optional conversion flags defined in @c MeshToVolumeFlags +/// @param polygonIndexGrid optional grid output that will contain the closest-polygon +/// index for each voxel in the active narrow band region +template +inline typename GridType::Ptr +meshToVolume( + Interrupter& interrupter, + const MeshDataAdapter& mesh, + const math::Transform& transform, + float exteriorBandWidth = 3.0f, + float interiorBandWidth = 3.0f, + int flags = 0, + typename GridType::template ValueConverter::Type * polygonIndexGrid = nullptr); + + +//////////////////////////////////////// + + +/// @brief Contiguous quad and triangle data adapter class +/// +/// @details PointType and PolygonType must provide element access +/// through the square brackets operator. +/// @details Points are assumed to be in local grid index space. +/// @details The PolygonType tuple can have either three or four components +/// this property must be specified in a static member variable +/// named @c size, similar to the math::Tuple class. +/// @details A four component tuple can represent a quads or a triangle +/// if the fourth component set to @c util::INVALID_INDEX +template +struct QuadAndTriangleDataAdapter { + + QuadAndTriangleDataAdapter(const std::vector& points, + const std::vector& polygons) + : mPointArray(points.empty() ? nullptr : &points[0]) + , mPointArraySize(points.size()) + , mPolygonArray(polygons.empty() ? nullptr : &polygons[0]) + , mPolygonArraySize(polygons.size()) + { + } + + QuadAndTriangleDataAdapter(const PointType * pointArray, size_t pointArraySize, + const PolygonType* polygonArray, size_t polygonArraySize) + : mPointArray(pointArray) + , mPointArraySize(pointArraySize) + , mPolygonArray(polygonArray) + , mPolygonArraySize(polygonArraySize) + { + } + + size_t polygonCount() const { return mPolygonArraySize; } + size_t pointCount() const { return mPointArraySize; } + + /// @brief Vertex count for polygon @a n + size_t vertexCount(size_t n) const { + return (PolygonType::size == 3 || mPolygonArray[n][3] == util::INVALID_IDX) ? 3 : 4; + } + + /// @brief Returns position @a pos in local grid index space + /// for polygon @a n and vertex @a v + void getIndexSpacePoint(size_t n, size_t v, Vec3d& pos) const { + const PointType& p = mPointArray[mPolygonArray[n][int(v)]]; + pos[0] = double(p[0]); + pos[1] = double(p[1]); + pos[2] = double(p[2]); + } + +private: + PointType const * const mPointArray; + size_t const mPointArraySize; + PolygonType const * const mPolygonArray; + size_t const mPolygonArraySize; +}; // struct QuadAndTriangleDataAdapter + + +//////////////////////////////////////// + + +// Convenience functions for the mesh to volume converter that wrap stl containers. +// +// Note the meshToVolume() method declared above is more flexible and better suited +// for arbitrary data structures. + + +/// @brief Convert a triangle mesh to a level set volume. +/// +/// @return a grid of type @c GridType containing a narrow-band level set +/// representation of the input mesh. +/// +/// @throw TypeError if @c GridType is not scalar or not floating-point +/// +/// @note Requires a closed surface but not necessarily a manifold surface. +/// Supports surfaces with self intersections and degenerate faces +/// and is independent of mesh surface normals. +/// +/// @param xform transform for the output grid +/// @param points list of world space point positions +/// @param triangles triangle index list +/// @param halfWidth half the width of the narrow band, in voxel units +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + +/// Adds support for a @a interrupter callback used to cancel the conversion. +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + + +/// @brief Convert a quad mesh to a level set volume. +/// +/// @return a grid of type @c GridType containing a narrow-band level set +/// representation of the input mesh. +/// +/// @throw TypeError if @c GridType is not scalar or not floating-point +/// +/// @note Requires a closed surface but not necessarily a manifold surface. +/// Supports surfaces with self intersections and degenerate faces +/// and is independent of mesh surface normals. +/// +/// @param xform transform for the output grid +/// @param points list of world space point positions +/// @param quads quad index list +/// @param halfWidth half the width of the narrow band, in voxel units +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& quads, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + +/// Adds support for a @a interrupter callback used to cancel the conversion. +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& quads, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + + +/// @brief Convert a triangle and quad mesh to a level set volume. +/// +/// @return a grid of type @c GridType containing a narrow-band level set +/// representation of the input mesh. +/// +/// @throw TypeError if @c GridType is not scalar or not floating-point +/// +/// @note Requires a closed surface but not necessarily a manifold surface. +/// Supports surfaces with self intersections and degenerate faces +/// and is independent of mesh surface normals. +/// +/// @param xform transform for the output grid +/// @param points list of world space point positions +/// @param triangles triangle index list +/// @param quads quad index list +/// @param halfWidth half the width of the narrow band, in voxel units +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + +/// Adds support for a @a interrupter callback used to cancel the conversion. +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float halfWidth = float(LEVEL_SET_HALF_WIDTH)); + + +/// @brief Convert a triangle and quad mesh to a signed distance field +/// with an asymmetrical narrow band. +/// +/// @return a grid of type @c GridType containing a narrow-band signed +/// distance field representation of the input mesh. +/// +/// @throw TypeError if @c GridType is not scalar or not floating-point +/// +/// @note Requires a closed surface but not necessarily a manifold surface. +/// Supports surfaces with self intersections and degenerate faces +/// and is independent of mesh surface normals. +/// +/// @param xform transform for the output grid +/// @param points list of world space point positions +/// @param triangles triangle index list +/// @param quads quad index list +/// @param exBandWidth the exterior narrow-band width in voxel units +/// @param inBandWidth the interior narrow-band width in voxel units +template +inline typename GridType::Ptr +meshToSignedDistanceField( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float exBandWidth, + float inBandWidth); + +/// Adds support for a @a interrupter callback used to cancel the conversion. +template +inline typename GridType::Ptr +meshToSignedDistanceField( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float exBandWidth, + float inBandWidth); + + +/// @brief Convert a triangle and quad mesh to an unsigned distance field. +/// +/// @return a grid of type @c GridType containing a narrow-band unsigned +/// distance field representation of the input mesh. +/// +/// @throw TypeError if @c GridType is not scalar or not floating-point +/// +/// @note Does not requires a closed surface. +/// +/// @param xform transform for the output grid +/// @param points list of world space point positions +/// @param triangles triangle index list +/// @param quads quad index list +/// @param bandWidth the width of the narrow band, in voxel units +template +inline typename GridType::Ptr +meshToUnsignedDistanceField( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float bandWidth); + +/// Adds support for a @a interrupter callback used to cancel the conversion. +template +inline typename GridType::Ptr +meshToUnsignedDistanceField( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float bandWidth); + + +//////////////////////////////////////// + + +/// @brief Return a grid of type @c GridType containing a narrow-band level set +/// representation of a box. +/// +/// @param bbox a bounding box in world units +/// @param xform world-to-index-space transform +/// @param halfWidth half the width of the narrow band, in voxel units +template +inline typename GridType::Ptr +createLevelSetBox(const math::BBox& bbox, + const openvdb::math::Transform& xform, + typename VecType::ValueType halfWidth = LEVEL_SET_HALF_WIDTH); + + +//////////////////////////////////////// + + +/// @brief Traces the exterior voxel boundary of closed objects in the input +/// volume @a tree. Exterior voxels are marked with a negative sign, +/// voxels with a value below @c 0.75 are left unchanged and act as +/// the boundary layer. +/// +/// @note Does not propagate sign information into tile regions. +template +inline void +traceExteriorBoundaries(FloatTreeT& tree); + + +//////////////////////////////////////// + + +/// @brief Extracts and stores voxel edge intersection data from a mesh. +class MeshToVoxelEdgeData +{ +public: + + ////////// + + ///@brief Internal edge data type. + struct EdgeData { + EdgeData(float dist = 1.0) + : mXDist(dist), mYDist(dist), mZDist(dist) + , mXPrim(util::INVALID_IDX) + , mYPrim(util::INVALID_IDX) + , mZPrim(util::INVALID_IDX) + { + } + + //@{ + /// Required by several of the tree nodes + /// @note These methods don't perform meaningful operations. + bool operator< (const EdgeData&) const { return false; } + bool operator> (const EdgeData&) const { return false; } + template EdgeData operator+(const T&) const { return *this; } + template EdgeData operator-(const T&) const { return *this; } + EdgeData operator-() const { return *this; } + //@} + + bool operator==(const EdgeData& rhs) const + { + return mXPrim == rhs.mXPrim && mYPrim == rhs.mYPrim && mZPrim == rhs.mZPrim; + } + + float mXDist, mYDist, mZDist; + Index32 mXPrim, mYPrim, mZPrim; + }; + + using TreeType = tree::Tree4::Type; + using Accessor = tree::ValueAccessor; + + + ////////// + + + MeshToVoxelEdgeData(); + + + /// @brief Threaded method to extract voxel edge data, the closest + /// intersection point and corresponding primitive index, + /// from the given mesh. + /// + /// @param pointList List of points in grid index space, preferably unique + /// and shared by different polygons. + /// @param polygonList List of triangles and/or quads. + void convert(const std::vector& pointList, const std::vector& polygonList); + + + /// @brief Returns intersection points with corresponding primitive + /// indices for the given @c ijk voxel. + void getEdgeData(Accessor& acc, const Coord& ijk, + std::vector& points, std::vector& primitives); + + /// @return An accessor of @c MeshToVoxelEdgeData::Accessor type that + /// provides random read access to the internal tree. + Accessor getAccessor() { return Accessor(mTree); } + +private: + void operator=(const MeshToVoxelEdgeData&) {} + TreeType mTree; + class GenEdgeData; +}; + + +//////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// + + +// Internal utility objects and implementation details + +namespace mesh_to_volume_internal { + +template +struct TransformPoints { + + TransformPoints(const PointType* pointsIn, PointType* pointsOut, + const math::Transform& xform) + : mPointsIn(pointsIn), mPointsOut(pointsOut), mXform(&xform) + { + } + + void operator()(const tbb::blocked_range& range) const { + + Vec3d pos; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const PointType& wsP = mPointsIn[n]; + pos[0] = double(wsP[0]); + pos[1] = double(wsP[1]); + pos[2] = double(wsP[2]); + + pos = mXform->worldToIndex(pos); + + PointType& isP = mPointsOut[n]; + isP[0] = typename PointType::value_type(pos[0]); + isP[1] = typename PointType::value_type(pos[1]); + isP[2] = typename PointType::value_type(pos[2]); + } + } + + PointType const * const mPointsIn; + PointType * const mPointsOut; + math::Transform const * const mXform; +}; // TransformPoints + + +template +struct Tolerance +{ + static ValueType epsilon() { return ValueType(1e-7); } + static ValueType minNarrowBandWidth() { return ValueType(1.0 + 1e-6); } +}; + + +//////////////////////////////////////// + + +template +class CombineLeafNodes +{ +public: + + using Int32TreeType = typename TreeType::template ValueConverter::Type; + + using LeafNodeType = typename TreeType::LeafNodeType; + using Int32LeafNodeType = typename Int32TreeType::LeafNodeType; + + CombineLeafNodes(TreeType& lhsDistTree, Int32TreeType& lhsIdxTree, + LeafNodeType ** rhsDistNodes, Int32LeafNodeType ** rhsIdxNodes) + : mDistTree(&lhsDistTree) + , mIdxTree(&lhsIdxTree) + , mRhsDistNodes(rhsDistNodes) + , mRhsIdxNodes(rhsIdxNodes) + { + } + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor distAcc(*mDistTree); + tree::ValueAccessor idxAcc(*mIdxTree); + + using DistValueType = typename LeafNodeType::ValueType; + using IndexValueType = typename Int32LeafNodeType::ValueType; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const Coord& origin = mRhsDistNodes[n]->origin(); + + LeafNodeType* lhsDistNode = distAcc.probeLeaf(origin); + Int32LeafNodeType* lhsIdxNode = idxAcc.probeLeaf(origin); + + DistValueType* lhsDistData = lhsDistNode->buffer().data(); + IndexValueType* lhsIdxData = lhsIdxNode->buffer().data(); + + const DistValueType* rhsDistData = mRhsDistNodes[n]->buffer().data(); + const IndexValueType* rhsIdxData = mRhsIdxNodes[n]->buffer().data(); + + + for (Index32 offset = 0; offset < LeafNodeType::SIZE; ++offset) { + + if (rhsIdxData[offset] != Int32(util::INVALID_IDX)) { + + const DistValueType& lhsValue = lhsDistData[offset]; + const DistValueType& rhsValue = rhsDistData[offset]; + + if (rhsValue < lhsValue) { + lhsDistNode->setValueOn(offset, rhsValue); + lhsIdxNode->setValueOn(offset, rhsIdxData[offset]); + } else if (math::isExactlyEqual(rhsValue, lhsValue)) { + lhsIdxNode->setValueOn(offset, + std::min(lhsIdxData[offset], rhsIdxData[offset])); + } + } + } + + delete mRhsDistNodes[n]; + delete mRhsIdxNodes[n]; + } + } + +private: + + TreeType * const mDistTree; + Int32TreeType * const mIdxTree; + + LeafNodeType ** const mRhsDistNodes; + Int32LeafNodeType ** const mRhsIdxNodes; +}; // class CombineLeafNodes + + +//////////////////////////////////////// + + +template +struct StashOriginAndStoreOffset +{ + using LeafNodeType = typename TreeType::LeafNodeType; + + StashOriginAndStoreOffset(std::vector& nodes, Coord* coordinates) + : mNodes(nodes.empty() ? nullptr : &nodes[0]), mCoordinates(coordinates) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + Coord& origin = const_cast(mNodes[n]->origin()); + mCoordinates[n] = origin; + origin[0] = static_cast(n); + } + } + + LeafNodeType ** const mNodes; + Coord * const mCoordinates; +}; + + +template +struct RestoreOrigin +{ + using LeafNodeType = typename TreeType::LeafNodeType; + + RestoreOrigin(std::vector& nodes, const Coord* coordinates) + : mNodes(nodes.empty() ? nullptr : &nodes[0]), mCoordinates(coordinates) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + Coord& origin = const_cast(mNodes[n]->origin()); + origin[0] = mCoordinates[n][0]; + } + } + + LeafNodeType ** const mNodes; + Coord const * const mCoordinates; +}; + + +template +class ComputeNodeConnectivity +{ +public: + using LeafNodeType = typename TreeType::LeafNodeType; + + ComputeNodeConnectivity(const TreeType& tree, const Coord* coordinates, + size_t* offsets, size_t numNodes, const CoordBBox& bbox) + : mTree(&tree) + , mCoordinates(coordinates) + , mOffsets(offsets) + , mNumNodes(numNodes) + , mBBox(bbox) + { + } + + ComputeNodeConnectivity(const ComputeNodeConnectivity&) = default; + + // Disallow assignment + ComputeNodeConnectivity& operator=(const ComputeNodeConnectivity&) = delete; + + void operator()(const tbb::blocked_range& range) const { + + size_t* offsetsNextX = mOffsets; + size_t* offsetsPrevX = mOffsets + mNumNodes; + size_t* offsetsNextY = mOffsets + mNumNodes * 2; + size_t* offsetsPrevY = mOffsets + mNumNodes * 3; + size_t* offsetsNextZ = mOffsets + mNumNodes * 4; + size_t* offsetsPrevZ = mOffsets + mNumNodes * 5; + + tree::ValueAccessor acc(*mTree); + Coord ijk; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + const Coord& origin = mCoordinates[n]; + offsetsNextX[n] = findNeighbourNode(acc, origin, Coord(LeafNodeType::DIM, 0, 0)); + offsetsPrevX[n] = findNeighbourNode(acc, origin, Coord(-LeafNodeType::DIM, 0, 0)); + offsetsNextY[n] = findNeighbourNode(acc, origin, Coord(0, LeafNodeType::DIM, 0)); + offsetsPrevY[n] = findNeighbourNode(acc, origin, Coord(0, -LeafNodeType::DIM, 0)); + offsetsNextZ[n] = findNeighbourNode(acc, origin, Coord(0, 0, LeafNodeType::DIM)); + offsetsPrevZ[n] = findNeighbourNode(acc, origin, Coord(0, 0, -LeafNodeType::DIM)); + } + } + + size_t findNeighbourNode(tree::ValueAccessor& acc, + const Coord& start, const Coord& step) const + { + Coord ijk = start + step; + CoordBBox bbox(mBBox); + + while (bbox.isInside(ijk)) { + const LeafNodeType* node = acc.probeConstLeaf(ijk); + if (node) return static_cast(node->origin()[0]); + ijk += step; + } + + return std::numeric_limits::max(); + } + + +private: + TreeType const * const mTree; + Coord const * const mCoordinates; + size_t * const mOffsets; + + const size_t mNumNodes; + const CoordBBox mBBox; +}; // class ComputeNodeConnectivity + + +template +struct LeafNodeConnectivityTable +{ + enum { INVALID_OFFSET = std::numeric_limits::max() }; + + using LeafNodeType = typename TreeType::LeafNodeType; + + LeafNodeConnectivityTable(TreeType& tree) + { + mLeafNodes.reserve(tree.leafCount()); + tree.getNodes(mLeafNodes); + + if (mLeafNodes.empty()) return; + + CoordBBox bbox; + tree.evalLeafBoundingBox(bbox); + + const tbb::blocked_range range(0, mLeafNodes.size()); + + // stash the leafnode origin coordinate and temporarily store the + // linear offset in the origin.x variable. + std::unique_ptr coordinates{new Coord[mLeafNodes.size()]}; + tbb::parallel_for(range, + StashOriginAndStoreOffset(mLeafNodes, coordinates.get())); + + // build the leafnode offset table + mOffsets.reset(new size_t[mLeafNodes.size() * 6]); + + + tbb::parallel_for(range, ComputeNodeConnectivity( + tree, coordinates.get(), mOffsets.get(), mLeafNodes.size(), bbox)); + + // restore the leafnode origin coordinate + tbb::parallel_for(range, RestoreOrigin(mLeafNodes, coordinates.get())); + } + + size_t size() const { return mLeafNodes.size(); } + + std::vector& nodes() { return mLeafNodes; } + const std::vector& nodes() const { return mLeafNodes; } + + + const size_t* offsetsNextX() const { return mOffsets.get(); } + const size_t* offsetsPrevX() const { return mOffsets.get() + mLeafNodes.size(); } + + const size_t* offsetsNextY() const { return mOffsets.get() + mLeafNodes.size() * 2; } + const size_t* offsetsPrevY() const { return mOffsets.get() + mLeafNodes.size() * 3; } + + const size_t* offsetsNextZ() const { return mOffsets.get() + mLeafNodes.size() * 4; } + const size_t* offsetsPrevZ() const { return mOffsets.get() + mLeafNodes.size() * 5; } + +private: + std::vector mLeafNodes; + std::unique_ptr mOffsets; +}; // struct LeafNodeConnectivityTable + + +template +class SweepExteriorSign +{ +public: + + enum Axis { X_AXIS = 0, Y_AXIS = 1, Z_AXIS = 2 }; + + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using ConnectivityTable = LeafNodeConnectivityTable; + + SweepExteriorSign(Axis axis, const std::vector& startNodeIndices, + ConnectivityTable& connectivity) + : mStartNodeIndices(startNodeIndices.empty() ? nullptr : &startNodeIndices[0]) + , mConnectivity(&connectivity) + , mAxis(axis) + { + } + + void operator()(const tbb::blocked_range& range) const { + + std::vector& nodes = mConnectivity->nodes(); + + // Z Axis + size_t idxA = 0, idxB = 1; + Index step = 1; + + const size_t* nextOffsets = mConnectivity->offsetsNextZ(); + const size_t* prevOffsets = mConnectivity->offsetsPrevZ(); + + if (mAxis == Y_AXIS) { + + idxA = 0; + idxB = 2; + step = LeafNodeType::DIM; + + nextOffsets = mConnectivity->offsetsNextY(); + prevOffsets = mConnectivity->offsetsPrevY(); + + } else if (mAxis == X_AXIS) { + + idxA = 1; + idxB = 2; + step = LeafNodeType::DIM * LeafNodeType::DIM; + + nextOffsets = mConnectivity->offsetsNextX(); + prevOffsets = mConnectivity->offsetsPrevX(); + } + + Coord ijk(0, 0, 0); + + int& a = ijk[idxA]; + int& b = ijk[idxB]; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + size_t startOffset = mStartNodeIndices[n]; + size_t lastOffset = startOffset; + + Index pos(0); + + for (a = 0; a < int(LeafNodeType::DIM); ++a) { + for (b = 0; b < int(LeafNodeType::DIM); ++b) { + + pos = LeafNodeType::coordToOffset(ijk); + size_t offset = startOffset; + + // sweep in +axis direction until a boundary voxel is hit. + while ( offset != ConnectivityTable::INVALID_OFFSET && + traceVoxelLine(*nodes[offset], pos, step) ) { + + lastOffset = offset; + offset = nextOffsets[offset]; + } + + // find last leafnode in +axis direction + offset = lastOffset; + while (offset != ConnectivityTable::INVALID_OFFSET) { + lastOffset = offset; + offset = nextOffsets[offset]; + } + + // sweep in -axis direction until a boundary voxel is hit. + offset = lastOffset; + pos += step * (LeafNodeType::DIM - 1); + while ( offset != ConnectivityTable::INVALID_OFFSET && + traceVoxelLine(*nodes[offset], pos, -step)) { + offset = prevOffsets[offset]; + } + } + } + } + } + + + bool traceVoxelLine(LeafNodeType& node, Index pos, Index step) const { + + ValueType* data = node.buffer().data(); + + bool isOutside = true; + + for (Index i = 0; i < LeafNodeType::DIM; ++i) { + + ValueType& dist = data[pos]; + + if (dist < ValueType(0.0)) { + isOutside = true; + } else { + // Boundary voxel check. (Voxel that intersects the surface) + if (!(dist > ValueType(0.75))) isOutside = false; + + if (isOutside) dist = ValueType(-dist); + } + + pos += step; + } + + return isOutside; + } + + +private: + size_t const * const mStartNodeIndices; + ConnectivityTable * const mConnectivity; + + const Axis mAxis; +}; // class SweepExteriorSign + + +template +inline void +seedFill(LeafNodeType& node) +{ + using ValueType = typename LeafNodeType::ValueType; + using Queue = std::deque; + + + ValueType* data = node.buffer().data(); + + // find seed points + Queue seedPoints; + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + if (data[pos] < 0.0) seedPoints.push_back(pos); + } + + if (seedPoints.empty()) return; + + // clear sign information + for (Queue::iterator it = seedPoints.begin(); it != seedPoints.end(); ++it) { + ValueType& dist = data[*it]; + dist = -dist; + } + + // flood fill + + Coord ijk(0, 0, 0); + Index pos(0), nextPos(0); + + while (!seedPoints.empty()) { + + pos = seedPoints.back(); + seedPoints.pop_back(); + + ValueType& dist = data[pos]; + + if (!(dist < ValueType(0.0))) { + + dist = -dist; // flip sign + + ijk = LeafNodeType::offsetToLocalCoord(pos); + + if (ijk[0] != 0) { // i - 1, j, k + nextPos = pos - LeafNodeType::DIM * LeafNodeType::DIM; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + + if (ijk[0] != (LeafNodeType::DIM - 1)) { // i + 1, j, k + nextPos = pos + LeafNodeType::DIM * LeafNodeType::DIM; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + + if (ijk[1] != 0) { // i, j - 1, k + nextPos = pos - LeafNodeType::DIM; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + + if (ijk[1] != (LeafNodeType::DIM - 1)) { // i, j + 1, k + nextPos = pos + LeafNodeType::DIM; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + + if (ijk[2] != 0) { // i, j, k - 1 + nextPos = pos - 1; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + + if (ijk[2] != (LeafNodeType::DIM - 1)) { // i, j, k + 1 + nextPos = pos + 1; + if (data[nextPos] > ValueType(0.75)) seedPoints.push_back(nextPos); + } + } + } +} // seedFill() + + +template +inline bool +scanFill(LeafNodeType& node) +{ + bool updatedNode = false; + + using ValueType = typename LeafNodeType::ValueType; + ValueType* data = node.buffer().data(); + + Coord ijk(0, 0, 0); + + bool updatedSign = true; + while (updatedSign) { + + updatedSign = false; + + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + + ValueType& dist = data[pos]; + + if (!(dist < ValueType(0.0)) && dist > ValueType(0.75)) { + + ijk = LeafNodeType::offsetToLocalCoord(pos); + + // i, j, k - 1 + if (ijk[2] != 0 && data[pos - 1] < ValueType(0.0)) { + updatedSign = true; + dist = ValueType(-dist); + + // i, j, k + 1 + } else if (ijk[2] != (LeafNodeType::DIM - 1) && data[pos + 1] < ValueType(0.0)) { + updatedSign = true; + dist = ValueType(-dist); + + // i, j - 1, k + } else if (ijk[1] != 0 && data[pos - LeafNodeType::DIM] < ValueType(0.0)) { + updatedSign = true; + dist = ValueType(-dist); + + // i, j + 1, k + } else if (ijk[1] != (LeafNodeType::DIM - 1) + && data[pos + LeafNodeType::DIM] < ValueType(0.0)) + { + updatedSign = true; + dist = ValueType(-dist); + + // i - 1, j, k + } else if (ijk[0] != 0 + && data[pos - LeafNodeType::DIM * LeafNodeType::DIM] < ValueType(0.0)) + { + updatedSign = true; + dist = ValueType(-dist); + + // i + 1, j, k + } else if (ijk[0] != (LeafNodeType::DIM - 1) + && data[pos + LeafNodeType::DIM * LeafNodeType::DIM] < ValueType(0.0)) + { + updatedSign = true; + dist = ValueType(-dist); + } + } + } // end value loop + + updatedNode |= updatedSign; + } // end update loop + + return updatedNode; +} // scanFill() + + +template +class SeedFillExteriorSign +{ +public: + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + + SeedFillExteriorSign(std::vector& nodes, bool* changedNodeMask) + : mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mChangedNodeMask(changedNodeMask) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + if (mChangedNodeMask[n]) { + //seedFill(*mNodes[n]); + mChangedNodeMask[n] = scanFill(*mNodes[n]); + } + } + } + + LeafNodeType ** const mNodes; + bool * const mChangedNodeMask; +}; + + +template +struct FillArray +{ + FillArray(ValueType* array, const ValueType v) : mArray(array), mValue(v) { } + + void operator()(const tbb::blocked_range& range) const { + const ValueType v = mValue; + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + mArray[n] = v; + } + } + + ValueType * const mArray; + const ValueType mValue; +}; + + +template +inline void +fillArray(ValueType* array, const ValueType val, const size_t length) +{ + const auto grainSize = std::max( + length / tbb::task_scheduler_init::default_num_threads(), 1024); + const tbb::blocked_range range(0, length, grainSize); + tbb::parallel_for(range, FillArray(array, val), tbb::simple_partitioner()); +} + + +template +class SyncVoxelMask +{ +public: + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + + SyncVoxelMask(std::vector& nodes, + const bool* changedNodeMask, bool* changedVoxelMask) + : mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mChangedNodeMask(changedNodeMask) + , mChangedVoxelMask(changedVoxelMask) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + if (mChangedNodeMask[n]) { + bool* mask = &mChangedVoxelMask[n * LeafNodeType::SIZE]; + + ValueType* data = mNodes[n]->buffer().data(); + + for (Index pos = 0; pos < LeafNodeType::SIZE; ++pos) { + if (mask[pos]) { + data[pos] = ValueType(-data[pos]); + mask[pos] = false; + } + } + } + } + } + + LeafNodeType ** const mNodes; + bool const * const mChangedNodeMask; + bool * const mChangedVoxelMask; +}; + + +template +class SeedPoints +{ +public: + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using ConnectivityTable = LeafNodeConnectivityTable; + + SeedPoints(ConnectivityTable& connectivity, + bool* changedNodeMask, bool* nodeMask, bool* changedVoxelMask) + : mConnectivity(&connectivity) + , mChangedNodeMask(changedNodeMask) + , mNodeMask(nodeMask) + , mChangedVoxelMask(changedVoxelMask) + { + } + + void operator()(const tbb::blocked_range& range) const { + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + if (!mChangedNodeMask[n]) { + + bool changedValue = false; + + changedValue |= processZ(n, /*firstFace=*/true); + changedValue |= processZ(n, /*firstFace=*/false); + + changedValue |= processY(n, /*firstFace=*/true); + changedValue |= processY(n, /*firstFace=*/false); + + changedValue |= processX(n, /*firstFace=*/true); + changedValue |= processX(n, /*firstFace=*/false); + + mNodeMask[n] = changedValue; + } + } + } + + + bool processZ(const size_t n, bool firstFace) const + { + const size_t offset = + firstFace ? mConnectivity->offsetsPrevZ()[n] : mConnectivity->offsetsNextZ()[n]; + if (offset != ConnectivityTable::INVALID_OFFSET && mChangedNodeMask[offset]) { + + bool* mask = &mChangedVoxelMask[n * LeafNodeType::SIZE]; + + const ValueType* lhsData = mConnectivity->nodes()[n]->buffer().data(); + const ValueType* rhsData = mConnectivity->nodes()[offset]->buffer().data(); + + const Index lastOffset = LeafNodeType::DIM - 1; + const Index lhsOffset = + firstFace ? 0 : lastOffset, rhsOffset = firstFace ? lastOffset : 0; + + Index tmpPos(0), pos(0); + bool changedValue = false; + + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + tmpPos = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + pos = tmpPos + (y << LeafNodeType::LOG2DIM); + + if (lhsData[pos + lhsOffset] > ValueType(0.75)) { + if (rhsData[pos + rhsOffset] < ValueType(0.0)) { + changedValue = true; + mask[pos + lhsOffset] = true; + } + } + } + } + + return changedValue; + } + + return false; + } + + bool processY(const size_t n, bool firstFace) const + { + const size_t offset = + firstFace ? mConnectivity->offsetsPrevY()[n] : mConnectivity->offsetsNextY()[n]; + if (offset != ConnectivityTable::INVALID_OFFSET && mChangedNodeMask[offset]) { + + bool* mask = &mChangedVoxelMask[n * LeafNodeType::SIZE]; + + const ValueType* lhsData = mConnectivity->nodes()[n]->buffer().data(); + const ValueType* rhsData = mConnectivity->nodes()[offset]->buffer().data(); + + const Index lastOffset = LeafNodeType::DIM * (LeafNodeType::DIM - 1); + const Index lhsOffset = + firstFace ? 0 : lastOffset, rhsOffset = firstFace ? lastOffset : 0; + + Index tmpPos(0), pos(0); + bool changedValue = false; + + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + tmpPos = x << (2 * LeafNodeType::LOG2DIM); + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + pos = tmpPos + z; + + if (lhsData[pos + lhsOffset] > ValueType(0.75)) { + if (rhsData[pos + rhsOffset] < ValueType(0.0)) { + changedValue = true; + mask[pos + lhsOffset] = true; + } + } + } + } + + return changedValue; + } + + return false; + } + + bool processX(const size_t n, bool firstFace) const + { + const size_t offset = + firstFace ? mConnectivity->offsetsPrevX()[n] : mConnectivity->offsetsNextX()[n]; + if (offset != ConnectivityTable::INVALID_OFFSET && mChangedNodeMask[offset]) { + + bool* mask = &mChangedVoxelMask[n * LeafNodeType::SIZE]; + + const ValueType* lhsData = mConnectivity->nodes()[n]->buffer().data(); + const ValueType* rhsData = mConnectivity->nodes()[offset]->buffer().data(); + + const Index lastOffset = LeafNodeType::DIM * LeafNodeType::DIM * (LeafNodeType::DIM-1); + const Index lhsOffset = + firstFace ? 0 : lastOffset, rhsOffset = firstFace ? lastOffset : 0; + + Index tmpPos(0), pos(0); + bool changedValue = false; + + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + tmpPos = y << LeafNodeType::LOG2DIM; + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + pos = tmpPos + z; + + if (lhsData[pos + lhsOffset] > ValueType(0.75)) { + if (rhsData[pos + rhsOffset] < ValueType(0.0)) { + changedValue = true; + mask[pos + lhsOffset] = true; + } + } + } + } + + return changedValue; + } + + return false; + } + + ConnectivityTable * const mConnectivity; + bool * const mChangedNodeMask; + bool * const mNodeMask; + bool * const mChangedVoxelMask; +}; + + +//////////////////////////////////////// + +template +struct ComputeIntersectingVoxelSign +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using Int32TreeType = typename TreeType::template ValueConverter::Type; + using Int32LeafNodeType = typename Int32TreeType::LeafNodeType; + + using PointArray = std::unique_ptr; + using MaskArray = std::unique_ptr; + using LocalData = std::pair; + using LocalDataTable = tbb::enumerable_thread_specific; + + ComputeIntersectingVoxelSign( + std::vector& distNodes, + const TreeType& distTree, + const Int32TreeType& indexTree, + const MeshDataAdapter& mesh) + : mDistNodes(distNodes.empty() ? nullptr : &distNodes[0]) + , mDistTree(&distTree) + , mIndexTree(&indexTree) + , mMesh(&mesh) + , mLocalDataTable(new LocalDataTable()) + { + } + + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor distAcc(*mDistTree); + tree::ValueAccessor idxAcc(*mIndexTree); + + ValueType nval; + CoordBBox bbox; + Index xPos(0), yPos(0); + Coord ijk, nijk, nodeMin, nodeMax; + Vec3d cp, xyz, nxyz, dir1, dir2; + + LocalData& localData = mLocalDataTable->local(); + + PointArray& points = localData.first; + if (!points) points.reset(new Vec3d[LeafNodeType::SIZE * 2]); + + MaskArray& mask = localData.second; + if (!mask) mask.reset(new bool[LeafNodeType::SIZE]); + + + typename LeafNodeType::ValueOnCIter it; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + LeafNodeType& node = *mDistNodes[n]; + ValueType* data = node.buffer().data(); + + const Int32LeafNodeType* idxNode = idxAcc.probeConstLeaf(node.origin()); + const Int32* idxData = idxNode->buffer().data(); + + nodeMin = node.origin(); + nodeMax = nodeMin.offsetBy(LeafNodeType::DIM - 1); + + // reset computed voxel mask. + memset(mask.get(), 0, sizeof(bool) * LeafNodeType::SIZE); + + for (it = node.cbeginValueOn(); it; ++it) { + Index pos = it.pos(); + + ValueType& dist = data[pos]; + if (dist < 0.0 || dist > 0.75) continue; + + ijk = node.offsetToGlobalCoord(pos); + + xyz[0] = double(ijk[0]); + xyz[1] = double(ijk[1]); + xyz[2] = double(ijk[2]); + + + bbox.min() = Coord::maxComponent(ijk.offsetBy(-1), nodeMin); + bbox.max() = Coord::minComponent(ijk.offsetBy(1), nodeMax); + + bool flipSign = false; + + for (nijk[0] = bbox.min()[0]; nijk[0] <= bbox.max()[0] && !flipSign; ++nijk[0]) { + xPos = (nijk[0] & (LeafNodeType::DIM - 1u)) << (2 * LeafNodeType::LOG2DIM); + for (nijk[1]=bbox.min()[1]; nijk[1] <= bbox.max()[1] && !flipSign; ++nijk[1]) { + yPos = xPos + ((nijk[1] & (LeafNodeType::DIM-1u)) << LeafNodeType::LOG2DIM); + for (nijk[2] = bbox.min()[2]; nijk[2] <= bbox.max()[2]; ++nijk[2]) { + pos = yPos + (nijk[2] & (LeafNodeType::DIM - 1u)); + + const Int32& polyIdx = idxData[pos]; + + if (polyIdx == Int32(util::INVALID_IDX) || !(data[pos] < -0.75)) + continue; + + const Index pointIndex = pos * 2; + + if (!mask[pos]) { + + mask[pos] = true; + + nxyz[0] = double(nijk[0]); + nxyz[1] = double(nijk[1]); + nxyz[2] = double(nijk[2]); + + Vec3d& point = points[pointIndex]; + + point = closestPoint(nxyz, polyIdx); + + Vec3d& direction = points[pointIndex + 1]; + direction = nxyz - point; + direction.normalize(); + } + + dir1 = xyz - points[pointIndex]; + dir1.normalize(); + + if (points[pointIndex + 1].dot(dir1) > 0.0) { + flipSign = true; + break; + } + } + } + } + + if (flipSign) { + dist = -dist; + } else { + for (Int32 m = 0; m < 26; ++m) { + nijk = ijk + util::COORD_OFFSETS[m]; + + if (!bbox.isInside(nijk) && distAcc.probeValue(nijk, nval) && nval<-0.75) { + nxyz[0] = double(nijk[0]); + nxyz[1] = double(nijk[1]); + nxyz[2] = double(nijk[2]); + + cp = closestPoint(nxyz, idxAcc.getValue(nijk)); + + dir1 = xyz - cp; + dir1.normalize(); + + dir2 = nxyz - cp; + dir2.normalize(); + + if (dir2.dot(dir1) > 0.0) { + dist = -dist; + break; + } + } + } + } + + } // active voxel loop + } // leaf node loop + } + +private: + + Vec3d closestPoint(const Vec3d& center, Int32 polyIdx) const + { + Vec3d a, b, c, cp, uvw; + + const size_t polygon = size_t(polyIdx); + mMesh->getIndexSpacePoint(polygon, 0, a); + mMesh->getIndexSpacePoint(polygon, 1, b); + mMesh->getIndexSpacePoint(polygon, 2, c); + + cp = closestPointOnTriangleToPoint(a, c, b, center, uvw); + + if (4 == mMesh->vertexCount(polygon)) { + + mMesh->getIndexSpacePoint(polygon, 3, b); + + c = closestPointOnTriangleToPoint(a, b, c, center, uvw); + + if ((center - c).lengthSqr() < (center - cp).lengthSqr()) { + cp = c; + } + } + + return cp; + } + + + LeafNodeType ** const mDistNodes; + TreeType const * const mDistTree; + Int32TreeType const * const mIndexTree; + MeshDataAdapter const * const mMesh; + + SharedPtr mLocalDataTable; +}; // ComputeIntersectingVoxelSign + + +//////////////////////////////////////// + + +template +inline void +maskNodeInternalNeighbours(const Index pos, bool (&mask)[26]) +{ + using NodeT = LeafNodeType; + + const Coord ijk = NodeT::offsetToLocalCoord(pos); + + // Face adjacent neighbours + // i+1, j, k + mask[0] = ijk[0] != (NodeT::DIM - 1); + // i-1, j, k + mask[1] = ijk[0] != 0; + // i, j+1, k + mask[2] = ijk[1] != (NodeT::DIM - 1); + // i, j-1, k + mask[3] = ijk[1] != 0; + // i, j, k+1 + mask[4] = ijk[2] != (NodeT::DIM - 1); + // i, j, k-1 + mask[5] = ijk[2] != 0; + + // Edge adjacent neighbour + // i+1, j, k-1 + mask[6] = mask[0] && mask[5]; + // i-1, j, k-1 + mask[7] = mask[1] && mask[5]; + // i+1, j, k+1 + mask[8] = mask[0] && mask[4]; + // i-1, j, k+1 + mask[9] = mask[1] && mask[4]; + // i+1, j+1, k + mask[10] = mask[0] && mask[2]; + // i-1, j+1, k + mask[11] = mask[1] && mask[2]; + // i+1, j-1, k + mask[12] = mask[0] && mask[3]; + // i-1, j-1, k + mask[13] = mask[1] && mask[3]; + // i, j-1, k+1 + mask[14] = mask[3] && mask[4]; + // i, j-1, k-1 + mask[15] = mask[3] && mask[5]; + // i, j+1, k+1 + mask[16] = mask[2] && mask[4]; + // i, j+1, k-1 + mask[17] = mask[2] && mask[5]; + + // Corner adjacent neighbours + // i-1, j-1, k-1 + mask[18] = mask[1] && mask[3] && mask[5]; + // i-1, j-1, k+1 + mask[19] = mask[1] && mask[3] && mask[4]; + // i+1, j-1, k+1 + mask[20] = mask[0] && mask[3] && mask[4]; + // i+1, j-1, k-1 + mask[21] = mask[0] && mask[3] && mask[5]; + // i-1, j+1, k-1 + mask[22] = mask[1] && mask[2] && mask[5]; + // i-1, j+1, k+1 + mask[23] = mask[1] && mask[2] && mask[4]; + // i+1, j+1, k+1 + mask[24] = mask[0] && mask[2] && mask[4]; + // i+1, j+1, k-1 + mask[25] = mask[0] && mask[2] && mask[5]; +} + + +template +inline bool +checkNeighbours(const Index pos, const typename LeafNodeType::ValueType * data, bool (&mask)[26]) +{ + using NodeT = LeafNodeType; + + // i, j, k - 1 + if (mask[5] && Compare::check(data[pos - 1])) return true; + // i, j, k + 1 + if (mask[4] && Compare::check(data[pos + 1])) return true; + // i, j - 1, k + if (mask[3] && Compare::check(data[pos - NodeT::DIM])) return true; + // i, j + 1, k + if (mask[2] && Compare::check(data[pos + NodeT::DIM])) return true; + // i - 1, j, k + if (mask[1] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM])) return true; + // i + 1, j, k + if (mask[0] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM])) return true; + // i+1, j, k-1 + if (mask[6] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM])) return true; + // i-1, j, k-1 + if (mask[7] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM - 1])) return true; + // i+1, j, k+1 + if (mask[8] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM + 1])) return true; + // i-1, j, k+1 + if (mask[9] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM + 1])) return true; + // i+1, j+1, k + if (mask[10] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM + NodeT::DIM])) return true; + // i-1, j+1, k + if (mask[11] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM + NodeT::DIM])) return true; + // i+1, j-1, k + if (mask[12] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM - NodeT::DIM])) return true; + // i-1, j-1, k + if (mask[13] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM - NodeT::DIM])) return true; + // i, j-1, k+1 + if (mask[14] && Compare::check(data[pos - NodeT::DIM + 1])) return true; + // i, j-1, k-1 + if (mask[15] && Compare::check(data[pos - NodeT::DIM - 1])) return true; + // i, j+1, k+1 + if (mask[16] && Compare::check(data[pos + NodeT::DIM + 1])) return true; + // i, j+1, k-1 + if (mask[17] && Compare::check(data[pos + NodeT::DIM - 1])) return true; + // i-1, j-1, k-1 + if (mask[18] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM - NodeT::DIM - 1])) return true; + // i-1, j-1, k+1 + if (mask[19] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM - NodeT::DIM + 1])) return true; + // i+1, j-1, k+1 + if (mask[20] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM - NodeT::DIM + 1])) return true; + // i+1, j-1, k-1 + if (mask[21] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM - NodeT::DIM - 1])) return true; + // i-1, j+1, k-1 + if (mask[22] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM + NodeT::DIM - 1])) return true; + // i-1, j+1, k+1 + if (mask[23] && Compare::check(data[pos - NodeT::DIM * NodeT::DIM + NodeT::DIM + 1])) return true; + // i+1, j+1, k+1 + if (mask[24] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM + NodeT::DIM + 1])) return true; + // i+1, j+1, k-1 + if (mask[25] && Compare::check(data[pos + NodeT::DIM * NodeT::DIM + NodeT::DIM - 1])) return true; + + return false; +} + + +template +inline bool +checkNeighbours(const Coord& ijk, AccessorType& acc, bool (&mask)[26]) +{ + for (Int32 m = 0; m < 26; ++m) { + if (!mask[m] && Compare::check(acc.getValue(ijk + util::COORD_OFFSETS[m]))) { + return true; + } + } + + return false; +} + + +template +struct ValidateIntersectingVoxels +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + + struct IsNegative { static bool check(const ValueType v) { return v < ValueType(0.0); } }; + + ValidateIntersectingVoxels(TreeType& tree, std::vector& nodes) + : mTree(&tree) + , mNodes(nodes.empty() ? nullptr : &nodes[0]) + { + } + + void operator()(const tbb::blocked_range& range) const + { + tree::ValueAccessor acc(*mTree); + bool neighbourMask[26]; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + LeafNodeType& node = *mNodes[n]; + ValueType* data = node.buffer().data(); + + typename LeafNodeType::ValueOnCIter it; + for (it = node.cbeginValueOn(); it; ++it) { + + const Index pos = it.pos(); + + ValueType& dist = data[pos]; + if (dist < 0.0 || dist > 0.75) continue; + + // Mask node internal neighbours + maskNodeInternalNeighbours(pos, neighbourMask); + + const bool hasNegativeNeighbour = + checkNeighbours(pos, data, neighbourMask) || + checkNeighbours(node.offsetToGlobalCoord(pos), acc, neighbourMask); + + if (!hasNegativeNeighbour) { + // push over boundary voxel distance + dist = ValueType(0.75) + Tolerance::epsilon(); + } + } + } + } + + TreeType * const mTree; + LeafNodeType ** const mNodes; +}; // ValidateIntersectingVoxels + + +template +struct RemoveSelfIntersectingSurface +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using Int32TreeType = typename TreeType::template ValueConverter::Type; + + struct Comp { static bool check(const ValueType v) { return !(v > ValueType(0.75)); } }; + + RemoveSelfIntersectingSurface(std::vector& nodes, + TreeType& distTree, Int32TreeType& indexTree) + : mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mDistTree(&distTree) + , mIndexTree(&indexTree) + { + } + + void operator()(const tbb::blocked_range& range) const + { + tree::ValueAccessor distAcc(*mDistTree); + tree::ValueAccessor idxAcc(*mIndexTree); + bool neighbourMask[26]; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + LeafNodeType& distNode = *mNodes[n]; + ValueType* data = distNode.buffer().data(); + + typename Int32TreeType::LeafNodeType* idxNode = + idxAcc.probeLeaf(distNode.origin()); + + typename LeafNodeType::ValueOnCIter it; + for (it = distNode.cbeginValueOn(); it; ++it) { + + const Index pos = it.pos(); + + if (!(data[pos] > 0.75)) continue; + + // Mask node internal neighbours + maskNodeInternalNeighbours(pos, neighbourMask); + + const bool hasBoundaryNeighbour = + checkNeighbours(pos, data, neighbourMask) || + checkNeighbours(distNode.offsetToGlobalCoord(pos),distAcc,neighbourMask); + + if (!hasBoundaryNeighbour) { + distNode.setValueOff(pos); + idxNode->setValueOff(pos); + } + } + } + } + + LeafNodeType * * const mNodes; + TreeType * const mDistTree; + Int32TreeType * const mIndexTree; +}; // RemoveSelfIntersectingSurface + + +//////////////////////////////////////// + + +template +struct ReleaseChildNodes +{ + ReleaseChildNodes(NodeType ** nodes) : mNodes(nodes) {} + + void operator()(const tbb::blocked_range& range) const { + + using NodeMaskType = typename NodeType::NodeMaskType; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + const_cast(mNodes[n]->getChildMask()).setOff(); + } + } + + NodeType ** const mNodes; +}; + + +template +inline void +releaseLeafNodes(TreeType& tree) +{ + using RootNodeType = typename TreeType::RootNodeType; + using NodeChainType = typename RootNodeType::NodeChainType; + using InternalNodeType = typename boost::mpl::at >::type; + + std::vector nodes; + tree.getNodes(nodes); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + ReleaseChildNodes(nodes.empty() ? nullptr : &nodes[0])); +} + + +template +struct StealUniqueLeafNodes +{ + using LeafNodeType = typename TreeType::LeafNodeType; + + StealUniqueLeafNodes(TreeType& lhsTree, TreeType& rhsTree, + std::vector& overlappingNodes) + : mLhsTree(&lhsTree) + , mRhsTree(&rhsTree) + , mNodes(&overlappingNodes) + { + } + + void operator()() const { + + std::vector rhsLeafNodes; + + rhsLeafNodes.reserve(mRhsTree->leafCount()); + //mRhsTree->getNodes(rhsLeafNodes); + //releaseLeafNodes(*mRhsTree); + mRhsTree->stealNodes(rhsLeafNodes); + + tree::ValueAccessor acc(*mLhsTree); + + for (size_t n = 0, N = rhsLeafNodes.size(); n < N; ++n) { + if (!acc.probeLeaf(rhsLeafNodes[n]->origin())) { + acc.addLeaf(rhsLeafNodes[n]); + } else { + mNodes->push_back(rhsLeafNodes[n]); + } + } + } + +private: + TreeType * const mLhsTree; + TreeType * const mRhsTree; + std::vector * const mNodes; +}; + + +template +inline void +combineData(DistTreeType& lhsDist, IndexTreeType& lhsIdx, + DistTreeType& rhsDist, IndexTreeType& rhsIdx) +{ + using DistLeafNodeType = typename DistTreeType::LeafNodeType; + using IndexLeafNodeType = typename IndexTreeType::LeafNodeType; + + std::vector overlappingDistNodes; + std::vector overlappingIdxNodes; + + // Steal unique leafnodes + tbb::task_group tasks; + tasks.run(StealUniqueLeafNodes(lhsDist, rhsDist, overlappingDistNodes)); + tasks.run(StealUniqueLeafNodes(lhsIdx, rhsIdx, overlappingIdxNodes)); + tasks.wait(); + + // Combine overlapping leaf nodes + if (!overlappingDistNodes.empty() && !overlappingIdxNodes.empty()) { + tbb::parallel_for(tbb::blocked_range(0, overlappingDistNodes.size()), + CombineLeafNodes(lhsDist, lhsIdx, + &overlappingDistNodes[0], &overlappingIdxNodes[0])); + } +} + +/// @brief TBB body object to voxelize a mesh of triangles and/or quads into a collection +/// of VDB grids, namely a squared distance grid, a closest primitive grid and an +/// intersecting voxels grid (masks the mesh intersecting voxels) +/// @note Only the leaf nodes that intersect the mesh are allocated, and only voxels in +/// a narrow band (of two to three voxels in proximity to the mesh's surface) are activated. +/// They are populated with distance values and primitive indices. +template +struct VoxelizationData { + + using Ptr = std::unique_ptr; + using ValueType = typename TreeType::ValueType; + + using Int32TreeType = typename TreeType::template ValueConverter::Type; + using UCharTreeType = typename TreeType::template ValueConverter::Type; + + using FloatTreeAcc = tree::ValueAccessor; + using Int32TreeAcc = tree::ValueAccessor; + using UCharTreeAcc = tree::ValueAccessor; + + + VoxelizationData() + : distTree(std::numeric_limits::max()) + , distAcc(distTree) + , indexTree(Int32(util::INVALID_IDX)) + , indexAcc(indexTree) + , primIdTree(MaxPrimId) + , primIdAcc(primIdTree) + , mPrimCount(0) + { + } + + TreeType distTree; + FloatTreeAcc distAcc; + + Int32TreeType indexTree; + Int32TreeAcc indexAcc; + + UCharTreeType primIdTree; + UCharTreeAcc primIdAcc; + + unsigned char getNewPrimId() { + + /// @warning Don't use parallel methods here! + /// The primIdTree is used as a "scratch" pad to mark visits for a given polygon + /// into voxels which it may contribute to. The tree is kept as lightweight as + /// possible and is reset when a maximum count or size is reached. A previous + /// bug here occurred due to the calling of tree methods with multi-threaded + /// implementations, resulting in nested parallelization and re-use of the TLS + /// from the initial task. This consequently resulted in non deterministic values + /// of mPrimCount on the return of the initial task, and could potentially end up + /// with a mPrimCount equal to that of the MaxPrimId. This is used as the background + /// value of the scratch tree. + /// @see jira.aswf.io/browse/OVDB-117, PR #564 + /// @todo Consider profiling this operator with tree.clear() and Investigate the + /// chosen value of MaxPrimId + + if (mPrimCount == MaxPrimId || primIdTree.leafCount() > 1000) { + mPrimCount = 0; + primIdTree.root().clear(); + primIdTree.clearAllAccessors(); + assert(mPrimCount == 0); + } + + return mPrimCount++; + } + +private: + + enum { MaxPrimId = 100 }; + + unsigned char mPrimCount; +}; + + +template +class VoxelizePolygons +{ +public: + + using VoxelizationDataType = VoxelizationData; + using DataTable = tbb::enumerable_thread_specific; + + VoxelizePolygons(DataTable& dataTable, + const MeshDataAdapter& mesh, + Interrupter* interrupter = nullptr) + : mDataTable(&dataTable) + , mMesh(&mesh) + , mInterrupter(interrupter) + { + } + + void operator()(const tbb::blocked_range& range) const { + + typename VoxelizationDataType::Ptr& dataPtr = mDataTable->local(); + if (!dataPtr) dataPtr.reset(new VoxelizationDataType()); + + Triangle prim; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + if (this->wasInterrupted()) { + tbb::task::self().cancel_group_execution(); + break; + } + + const size_t numVerts = mMesh->vertexCount(n); + + // rasterize triangles and quads. + if (numVerts == 3 || numVerts == 4) { + + prim.index = Int32(n); + + mMesh->getIndexSpacePoint(n, 0, prim.a); + mMesh->getIndexSpacePoint(n, 1, prim.b); + mMesh->getIndexSpacePoint(n, 2, prim.c); + + evalTriangle(prim, *dataPtr); + + if (numVerts == 4) { + mMesh->getIndexSpacePoint(n, 3, prim.b); + evalTriangle(prim, *dataPtr); + } + } + } + } + +private: + + bool wasInterrupted() const { return mInterrupter && mInterrupter->wasInterrupted(); } + + struct Triangle { Vec3d a, b, c; Int32 index; }; + + struct SubTask + { + enum { POLYGON_LIMIT = 1000 }; + + SubTask(const Triangle& prim, DataTable& dataTable, + int subdivisionCount, size_t polygonCount, + Interrupter* interrupter = nullptr) + : mLocalDataTable(&dataTable) + , mPrim(prim) + , mSubdivisionCount(subdivisionCount) + , mPolygonCount(polygonCount) + , mInterrupter(interrupter) + { + } + + void operator()() const + { + if (mSubdivisionCount <= 0 || mPolygonCount >= POLYGON_LIMIT) { + + typename VoxelizationDataType::Ptr& dataPtr = mLocalDataTable->local(); + if (!dataPtr) dataPtr.reset(new VoxelizationDataType()); + + voxelizeTriangle(mPrim, *dataPtr, mInterrupter); + + } else if (!(mInterrupter && mInterrupter->wasInterrupted())) { + spawnTasks(mPrim, *mLocalDataTable, mSubdivisionCount, mPolygonCount, mInterrupter); + } + } + + DataTable * const mLocalDataTable; + Triangle const mPrim; + int const mSubdivisionCount; + size_t const mPolygonCount; + Interrupter * const mInterrupter; + }; // struct SubTask + + inline static int evalSubdivisionCount(const Triangle& prim) + { + const double ax = prim.a[0], bx = prim.b[0], cx = prim.c[0]; + const double dx = std::max(ax, std::max(bx, cx)) - std::min(ax, std::min(bx, cx)); + + const double ay = prim.a[1], by = prim.b[1], cy = prim.c[1]; + const double dy = std::max(ay, std::max(by, cy)) - std::min(ay, std::min(by, cy)); + + const double az = prim.a[2], bz = prim.b[2], cz = prim.c[2]; + const double dz = std::max(az, std::max(bz, cz)) - std::min(az, std::min(bz, cz)); + + return int(std::max(dx, std::max(dy, dz)) / double(TreeType::LeafNodeType::DIM * 2)); + } + + void evalTriangle(const Triangle& prim, VoxelizationDataType& data) const + { + const size_t polygonCount = mMesh->polygonCount(); + const int subdivisionCount = + polygonCount < SubTask::POLYGON_LIMIT ? evalSubdivisionCount(prim) : 0; + + if (subdivisionCount <= 0) { + voxelizeTriangle(prim, data, mInterrupter); + } else { + spawnTasks(prim, *mDataTable, subdivisionCount, polygonCount, mInterrupter); + } + } + + static void spawnTasks( + const Triangle& mainPrim, + DataTable& dataTable, + int subdivisionCount, + size_t polygonCount, + Interrupter* const interrupter) + { + subdivisionCount -= 1; + polygonCount *= 4; + + tbb::task_group tasks; + + const Vec3d ac = (mainPrim.a + mainPrim.c) * 0.5; + const Vec3d bc = (mainPrim.b + mainPrim.c) * 0.5; + const Vec3d ab = (mainPrim.a + mainPrim.b) * 0.5; + + Triangle prim; + prim.index = mainPrim.index; + + prim.a = mainPrim.a; + prim.b = ab; + prim.c = ac; + tasks.run(SubTask(prim, dataTable, subdivisionCount, polygonCount, interrupter)); + + prim.a = ab; + prim.b = bc; + prim.c = ac; + tasks.run(SubTask(prim, dataTable, subdivisionCount, polygonCount, interrupter)); + + prim.a = ab; + prim.b = mainPrim.b; + prim.c = bc; + tasks.run(SubTask(prim, dataTable, subdivisionCount, polygonCount, interrupter)); + + prim.a = ac; + prim.b = bc; + prim.c = mainPrim.c; + tasks.run(SubTask(prim, dataTable, subdivisionCount, polygonCount, interrupter)); + + tasks.wait(); + } + + static void voxelizeTriangle(const Triangle& prim, VoxelizationDataType& data, Interrupter* const interrupter) + { + std::deque coordList; + Coord ijk, nijk; + + ijk = Coord::floor(prim.a); + coordList.push_back(ijk); + + // The first point may not be quite in bounds, and rely + // on one of the neighbours to have the first valid seed, + // so we cannot early-exit here. + updateDistance(ijk, prim, data); + + unsigned char primId = data.getNewPrimId(); + data.primIdAcc.setValueOnly(ijk, primId); + + while (!coordList.empty()) { + if (interrupter && interrupter->wasInterrupted()) { + tbb::task::self().cancel_group_execution(); + break; + } + for (Int32 pass = 0; pass < 1048576 && !coordList.empty(); ++pass) { + ijk = coordList.back(); + coordList.pop_back(); + + for (Int32 i = 0; i < 26; ++i) { + nijk = ijk + util::COORD_OFFSETS[i]; + if (primId != data.primIdAcc.getValue(nijk)) { + data.primIdAcc.setValueOnly(nijk, primId); + if(updateDistance(nijk, prim, data)) coordList.push_back(nijk); + } + } + } + } + } + + static bool updateDistance(const Coord& ijk, const Triangle& prim, VoxelizationDataType& data) + { + Vec3d uvw, voxelCenter(ijk[0], ijk[1], ijk[2]); + + using ValueType = typename TreeType::ValueType; + + const ValueType dist = ValueType((voxelCenter - + closestPointOnTriangleToPoint(prim.a, prim.c, prim.b, voxelCenter, uvw)).lengthSqr()); + + // Either the points may be NAN, or they could be far enough from + // the origin that computing distance fails. + if (std::isnan(dist)) + return false; + + const ValueType oldDist = data.distAcc.getValue(ijk); + + if (dist < oldDist) { + data.distAcc.setValue(ijk, dist); + data.indexAcc.setValue(ijk, prim.index); + } else if (math::isExactlyEqual(dist, oldDist)) { + // makes reduction deterministic when different polygons + // produce the same distance value. + data.indexAcc.setValueOnly(ijk, std::min(prim.index, data.indexAcc.getValue(ijk))); + } + + return !(dist > 0.75); // true if the primitive intersects the voxel. + } + + DataTable * const mDataTable; + MeshDataAdapter const * const mMesh; + Interrupter * const mInterrupter; +}; // VoxelizePolygons + + +//////////////////////////////////////// + + +template +struct DiffLeafNodeMask +{ + using AccessorType = typename tree::ValueAccessor; + using LeafNodeType = typename TreeType::LeafNodeType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + DiffLeafNodeMask(const TreeType& rhsTree, + std::vector& lhsNodes) + : mRhsTree(&rhsTree), mLhsNodes(lhsNodes.empty() ? nullptr : &lhsNodes[0]) + { + } + + void operator()(const tbb::blocked_range& range) const { + + tree::ValueAccessor acc(*mRhsTree); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + BoolLeafNodeType* lhsNode = mLhsNodes[n]; + const LeafNodeType* rhsNode = acc.probeConstLeaf(lhsNode->origin()); + + if (rhsNode) lhsNode->topologyDifference(*rhsNode, false); + } + } + +private: + TreeType const * const mRhsTree; + BoolLeafNodeType ** const mLhsNodes; +}; + + +template +struct UnionValueMasks +{ + UnionValueMasks(std::vector& nodesA, std::vector& nodesB) + : mNodesA(nodesA.empty() ? nullptr : &nodesA[0]) + , mNodesB(nodesB.empty() ? nullptr : &nodesB[0]) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + mNodesA[n]->topologyUnion(*mNodesB[n]); + } + } + +private: + LeafNodeTypeA ** const mNodesA; + LeafNodeTypeB ** const mNodesB; +}; + + +template +struct ConstructVoxelMask +{ + using LeafNodeType = typename TreeType::LeafNodeType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + ConstructVoxelMask(BoolTreeType& maskTree, const TreeType& tree, + std::vector& nodes) + : mTree(&tree) + , mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mLocalMaskTree(false) + , mMaskTree(&maskTree) + { + } + + ConstructVoxelMask(ConstructVoxelMask& rhs, tbb::split) + : mTree(rhs.mTree) + , mNodes(rhs.mNodes) + , mLocalMaskTree(false) + , mMaskTree(&mLocalMaskTree) + { + } + + void operator()(const tbb::blocked_range& range) + { + using Iterator = typename LeafNodeType::ValueOnCIter; + + tree::ValueAccessor acc(*mTree); + tree::ValueAccessor maskAcc(*mMaskTree); + + Coord ijk, nijk, localCorod; + Index pos, npos; + + for (size_t n = range.begin(); n != range.end(); ++n) { + + LeafNodeType& node = *mNodes[n]; + + CoordBBox bbox = node.getNodeBoundingBox(); + bbox.expand(-1); + + BoolLeafNodeType& maskNode = *maskAcc.touchLeaf(node.origin()); + + for (Iterator it = node.cbeginValueOn(); it; ++it) { + ijk = it.getCoord(); + pos = it.pos(); + + localCorod = LeafNodeType::offsetToLocalCoord(pos); + + if (localCorod[2] < int(LeafNodeType::DIM - 1)) { + npos = pos + 1; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(0, 0, 1); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + + if (localCorod[2] > 0) { + npos = pos - 1; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(0, 0, -1); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + + if (localCorod[1] < int(LeafNodeType::DIM - 1)) { + npos = pos + LeafNodeType::DIM; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(0, 1, 0); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + + if (localCorod[1] > 0) { + npos = pos - LeafNodeType::DIM; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(0, -1, 0); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + + if (localCorod[0] < int(LeafNodeType::DIM - 1)) { + npos = pos + LeafNodeType::DIM * LeafNodeType::DIM; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(1, 0, 0); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + + if (localCorod[0] > 0) { + npos = pos - LeafNodeType::DIM * LeafNodeType::DIM; + if (!node.isValueOn(npos)) maskNode.setValueOn(npos); + } else { + nijk = ijk.offsetBy(-1, 0, 0); + if (!acc.isValueOn(nijk)) maskAcc.setValueOn(nijk); + } + } + } + } + + void join(ConstructVoxelMask& rhs) { mMaskTree->merge(*rhs.mMaskTree); } + +private: + TreeType const * const mTree; + LeafNodeType ** const mNodes; + + BoolTreeType mLocalMaskTree; + BoolTreeType * const mMaskTree; +}; + + +/// @note The interior and exterior widths should be in world space units and squared. +template +struct ExpandNarrowband +{ + using ValueType = typename TreeType::ValueType; + using LeafNodeType = typename TreeType::LeafNodeType; + using NodeMaskType = typename LeafNodeType::NodeMaskType; + using Int32TreeType = typename TreeType::template ValueConverter::Type; + using Int32LeafNodeType = typename Int32TreeType::LeafNodeType; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + struct Fragment + { + Int32 idx, x, y, z; + ValueType dist; + + Fragment() : idx(0), x(0), y(0), z(0), dist(0.0) {} + + Fragment(Int32 idx_, Int32 x_, Int32 y_, Int32 z_, ValueType dist_) + : idx(idx_), x(x_), y(y_), z(z_), dist(dist_) + { + } + + bool operator<(const Fragment& rhs) const { return idx < rhs.idx; } + }; // struct Fragment + + //////////////////// + + ExpandNarrowband( + std::vector& maskNodes, + BoolTreeType& maskTree, + TreeType& distTree, + Int32TreeType& indexTree, + const MeshDataAdapter& mesh, + ValueType exteriorBandWidth, + ValueType interiorBandWidth, + ValueType voxelSize) + : mMaskNodes(maskNodes.empty() ? nullptr : &maskNodes[0]) + , mMaskTree(&maskTree) + , mDistTree(&distTree) + , mIndexTree(&indexTree) + , mMesh(&mesh) + , mNewMaskTree(false) + , mDistNodes() + , mUpdatedDistNodes() + , mIndexNodes() + , mUpdatedIndexNodes() + , mExteriorBandWidth(exteriorBandWidth) + , mInteriorBandWidth(interiorBandWidth) + , mVoxelSize(voxelSize) + { + } + + ExpandNarrowband(const ExpandNarrowband& rhs, tbb::split) + : mMaskNodes(rhs.mMaskNodes) + , mMaskTree(rhs.mMaskTree) + , mDistTree(rhs.mDistTree) + , mIndexTree(rhs.mIndexTree) + , mMesh(rhs.mMesh) + , mNewMaskTree(false) + , mDistNodes() + , mUpdatedDistNodes() + , mIndexNodes() + , mUpdatedIndexNodes() + , mExteriorBandWidth(rhs.mExteriorBandWidth) + , mInteriorBandWidth(rhs.mInteriorBandWidth) + , mVoxelSize(rhs.mVoxelSize) + { + } + + void join(ExpandNarrowband& rhs) + { + mDistNodes.insert(mDistNodes.end(), rhs.mDistNodes.begin(), rhs.mDistNodes.end()); + mIndexNodes.insert(mIndexNodes.end(), rhs.mIndexNodes.begin(), rhs.mIndexNodes.end()); + + mUpdatedDistNodes.insert(mUpdatedDistNodes.end(), + rhs.mUpdatedDistNodes.begin(), rhs.mUpdatedDistNodes.end()); + + mUpdatedIndexNodes.insert(mUpdatedIndexNodes.end(), + rhs.mUpdatedIndexNodes.begin(), rhs.mUpdatedIndexNodes.end()); + + mNewMaskTree.merge(rhs.mNewMaskTree); + } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor newMaskAcc(mNewMaskTree); + tree::ValueAccessor distAcc(*mDistTree); + tree::ValueAccessor indexAcc(*mIndexTree); + + std::vector fragments; + fragments.reserve(256); + + std::unique_ptr newDistNodePt; + std::unique_ptr newIndexNodePt; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + BoolLeafNodeType& maskNode = *mMaskNodes[n]; + if (maskNode.isEmpty()) continue; + + // Setup local caches + + const Coord& origin = maskNode.origin(); + + LeafNodeType * distNodePt = distAcc.probeLeaf(origin); + Int32LeafNodeType * indexNodePt = indexAcc.probeLeaf(origin); + + assert(!distNodePt == !indexNodePt); + + bool usingNewNodes = false; + + if (!distNodePt && !indexNodePt) { + + const ValueType backgroundDist = distAcc.getValue(origin); + + if (!newDistNodePt.get() && !newIndexNodePt.get()) { + newDistNodePt.reset(new LeafNodeType(origin, backgroundDist)); + newIndexNodePt.reset(new Int32LeafNodeType(origin, indexAcc.getValue(origin))); + } else { + + if ((backgroundDist < ValueType(0.0)) != + (newDistNodePt->getValue(0) < ValueType(0.0))) { + newDistNodePt->buffer().fill(backgroundDist); + } + + newDistNodePt->setOrigin(origin); + newIndexNodePt->setOrigin(origin); + } + + distNodePt = newDistNodePt.get(); + indexNodePt = newIndexNodePt.get(); + + usingNewNodes = true; + } + + + // Gather neighbour information + + CoordBBox bbox(Coord::max(), Coord::min()); + for (typename BoolLeafNodeType::ValueOnIter it = maskNode.beginValueOn(); it; ++it) { + bbox.expand(it.getCoord()); + } + + bbox.expand(1); + + gatherFragments(fragments, bbox, distAcc, indexAcc); + + + // Compute first voxel layer + + bbox = maskNode.getNodeBoundingBox(); + NodeMaskType mask; + bool updatedLeafNodes = false; + + for (typename BoolLeafNodeType::ValueOnIter it = maskNode.beginValueOn(); it; ++it) { + + const Coord ijk = it.getCoord(); + + if (updateVoxel(ijk, 5, fragments, *distNodePt, *indexNodePt, &updatedLeafNodes)) { + + for (Int32 i = 0; i < 6; ++i) { + const Coord nijk = ijk + util::COORD_OFFSETS[i]; + if (bbox.isInside(nijk)) { + mask.setOn(BoolLeafNodeType::coordToOffset(nijk)); + } else { + newMaskAcc.setValueOn(nijk); + } + } + + for (Int32 i = 6; i < 26; ++i) { + const Coord nijk = ijk + util::COORD_OFFSETS[i]; + if (bbox.isInside(nijk)) { + mask.setOn(BoolLeafNodeType::coordToOffset(nijk)); + } + } + } + } + + if (updatedLeafNodes) { + + // Compute second voxel layer + mask -= indexNodePt->getValueMask(); + + for (typename NodeMaskType::OnIterator it = mask.beginOn(); it; ++it) { + + const Index pos = it.pos(); + const Coord ijk = maskNode.origin() + LeafNodeType::offsetToLocalCoord(pos); + + if (updateVoxel(ijk, 6, fragments, *distNodePt, *indexNodePt)) { + for (Int32 i = 0; i < 6; ++i) { + newMaskAcc.setValueOn(ijk + util::COORD_OFFSETS[i]); + } + } + } + + // Export new distance values + if (usingNewNodes) { + newDistNodePt->topologyUnion(*newIndexNodePt); + mDistNodes.push_back(newDistNodePt.release()); + mIndexNodes.push_back(newIndexNodePt.release()); + } else { + mUpdatedDistNodes.push_back(distNodePt); + mUpdatedIndexNodes.push_back(indexNodePt); + } + } + } // end leafnode loop + } + + ////////// + + BoolTreeType& newMaskTree() { return mNewMaskTree; } + + std::vector& newDistNodes() { return mDistNodes; } + std::vector& updatedDistNodes() { return mUpdatedDistNodes; } + + std::vector& newIndexNodes() { return mIndexNodes; } + std::vector& updatedIndexNodes() { return mUpdatedIndexNodes; } + +private: + + /// @note The output fragment list is ordered by the primitive index + void + gatherFragments(std::vector& fragments, const CoordBBox& bbox, + tree::ValueAccessor& distAcc, tree::ValueAccessor& indexAcc) + { + fragments.clear(); + const Coord nodeMin = bbox.min() & ~(LeafNodeType::DIM - 1); + const Coord nodeMax = bbox.max() & ~(LeafNodeType::DIM - 1); + + CoordBBox region; + Coord ijk; + + for (ijk[0] = nodeMin[0]; ijk[0] <= nodeMax[0]; ijk[0] += LeafNodeType::DIM) { + for (ijk[1] = nodeMin[1]; ijk[1] <= nodeMax[1]; ijk[1] += LeafNodeType::DIM) { + for (ijk[2] = nodeMin[2]; ijk[2] <= nodeMax[2]; ijk[2] += LeafNodeType::DIM) { + if (LeafNodeType* distleaf = distAcc.probeLeaf(ijk)) { + region.min() = Coord::maxComponent(bbox.min(), ijk); + region.max() = Coord::minComponent(bbox.max(), + ijk.offsetBy(LeafNodeType::DIM - 1)); + gatherFragments(fragments, region, *distleaf, *indexAcc.probeLeaf(ijk)); + } + } + } + } + + std::sort(fragments.begin(), fragments.end()); + } + + void + gatherFragments(std::vector& fragments, const CoordBBox& bbox, + const LeafNodeType& distLeaf, const Int32LeafNodeType& idxLeaf) const + { + const typename LeafNodeType::NodeMaskType& mask = distLeaf.getValueMask(); + const ValueType* distData = distLeaf.buffer().data(); + const Int32* idxData = idxLeaf.buffer().data(); + + for (int x = bbox.min()[0]; x <= bbox.max()[0]; ++x) { + const Index xPos = (x & (LeafNodeType::DIM - 1u)) << (2 * LeafNodeType::LOG2DIM); + for (int y = bbox.min()[1]; y <= bbox.max()[1]; ++y) { + const Index yPos = xPos + ((y & (LeafNodeType::DIM - 1u)) << LeafNodeType::LOG2DIM); + for (int z = bbox.min()[2]; z <= bbox.max()[2]; ++z) { + const Index pos = yPos + (z & (LeafNodeType::DIM - 1u)); + if (mask.isOn(pos)) { + fragments.push_back(Fragment(idxData[pos],x,y,z, std::abs(distData[pos]))); + } + } + } + } + } + + /// @note This method expects the fragment list to be ordered by the primitive index + /// to avoid redundant distance computations. + ValueType + computeDistance(const Coord& ijk, const Int32 manhattanLimit, + const std::vector& fragments, Int32& closestPrimIdx) const + { + Vec3d a, b, c, uvw, voxelCenter(ijk[0], ijk[1], ijk[2]); + double primDist, tmpDist, dist = std::numeric_limits::max(); + Int32 lastIdx = Int32(util::INVALID_IDX); + + for (size_t n = 0, N = fragments.size(); n < N; ++n) { + + const Fragment& fragment = fragments[n]; + if (lastIdx == fragment.idx) continue; + + const Int32 dx = std::abs(fragment.x - ijk[0]); + const Int32 dy = std::abs(fragment.y - ijk[1]); + const Int32 dz = std::abs(fragment.z - ijk[2]); + + const Int32 manhattan = dx + dy + dz; + if (manhattan > manhattanLimit) continue; + + lastIdx = fragment.idx; + + const size_t polygon = size_t(lastIdx); + + mMesh->getIndexSpacePoint(polygon, 0, a); + mMesh->getIndexSpacePoint(polygon, 1, b); + mMesh->getIndexSpacePoint(polygon, 2, c); + + primDist = (voxelCenter - + closestPointOnTriangleToPoint(a, c, b, voxelCenter, uvw)).lengthSqr(); + + // Split quad into a second triangle + if (4 == mMesh->vertexCount(polygon)) { + + mMesh->getIndexSpacePoint(polygon, 3, b); + + tmpDist = (voxelCenter - closestPointOnTriangleToPoint( + a, b, c, voxelCenter, uvw)).lengthSqr(); + + if (tmpDist < primDist) primDist = tmpDist; + } + + if (primDist < dist) { + dist = primDist; + closestPrimIdx = lastIdx; + } + } + + return ValueType(std::sqrt(dist)) * mVoxelSize; + } + + /// @note Returns true if the current voxel was updated and neighbouring + /// voxels need to be evaluated. + bool + updateVoxel(const Coord& ijk, const Int32 manhattanLimit, + const std::vector& fragments, + LeafNodeType& distLeaf, Int32LeafNodeType& idxLeaf, bool* updatedLeafNodes = nullptr) + { + Int32 closestPrimIdx = 0; + const ValueType distance = computeDistance(ijk, manhattanLimit, fragments, closestPrimIdx); + + const Index pos = LeafNodeType::coordToOffset(ijk); + const bool inside = distLeaf.getValue(pos) < ValueType(0.0); + + bool activateNeighbourVoxels = false; + + if (!inside && distance < mExteriorBandWidth) { + if (updatedLeafNodes) *updatedLeafNodes = true; + activateNeighbourVoxels = (distance + mVoxelSize) < mExteriorBandWidth; + distLeaf.setValueOnly(pos, distance); + idxLeaf.setValueOn(pos, closestPrimIdx); + } else if (inside && distance < mInteriorBandWidth) { + if (updatedLeafNodes) *updatedLeafNodes = true; + activateNeighbourVoxels = (distance + mVoxelSize) < mInteriorBandWidth; + distLeaf.setValueOnly(pos, -distance); + idxLeaf.setValueOn(pos, closestPrimIdx); + } + + return activateNeighbourVoxels; + } + + ////////// + + BoolLeafNodeType ** const mMaskNodes; + BoolTreeType * const mMaskTree; + TreeType * const mDistTree; + Int32TreeType * const mIndexTree; + + MeshDataAdapter const * const mMesh; + + BoolTreeType mNewMaskTree; + + std::vector mDistNodes, mUpdatedDistNodes; + std::vector mIndexNodes, mUpdatedIndexNodes; + + const ValueType mExteriorBandWidth, mInteriorBandWidth, mVoxelSize; +}; // struct ExpandNarrowband + + +template +struct AddNodes { + using LeafNodeType = typename TreeType::LeafNodeType; + + AddNodes(TreeType& tree, std::vector& nodes) + : mTree(&tree) , mNodes(&nodes) + { + } + + void operator()() const { + tree::ValueAccessor acc(*mTree); + std::vector& nodes = *mNodes; + for (size_t n = 0, N = nodes.size(); n < N; ++n) { + acc.addLeaf(nodes[n]); + } + } + + TreeType * const mTree; + std::vector * const mNodes; +}; // AddNodes + + +template +inline void +expandNarrowband( + TreeType& distTree, + Int32TreeType& indexTree, + BoolTreeType& maskTree, + std::vector& maskNodes, + const MeshDataAdapter& mesh, + typename TreeType::ValueType exteriorBandWidth, + typename TreeType::ValueType interiorBandWidth, + typename TreeType::ValueType voxelSize) +{ + ExpandNarrowband expandOp(maskNodes, maskTree, + distTree, indexTree, mesh, exteriorBandWidth, interiorBandWidth, voxelSize); + + tbb::parallel_reduce(tbb::blocked_range(0, maskNodes.size()), expandOp); + + tbb::parallel_for(tbb::blocked_range(0, expandOp.updatedIndexNodes().size()), + UnionValueMasks( + expandOp.updatedDistNodes(), expandOp.updatedIndexNodes())); + + tbb::task_group tasks; + tasks.run(AddNodes(distTree, expandOp.newDistNodes())); + tasks.run(AddNodes(indexTree, expandOp.newIndexNodes())); + tasks.wait(); + + maskTree.clear(); + maskTree.merge(expandOp.newMaskTree()); +} + + +//////////////////////////////////////// + + +// Transform values (sqrt, world space scaling and sign flip if sdf) +template +struct TransformValues +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + TransformValues(std::vector& nodes, + ValueType voxelSize, bool unsignedDist) + : mNodes(&nodes[0]) + , mVoxelSize(voxelSize) + , mUnsigned(unsignedDist) + { + } + + void operator()(const tbb::blocked_range& range) const { + + typename LeafNodeType::ValueOnIter iter; + + const bool udf = mUnsigned; + const ValueType w[2] = { -mVoxelSize, mVoxelSize }; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + for (iter = mNodes[n]->beginValueOn(); iter; ++iter) { + ValueType& val = const_cast(iter.getValue()); + val = w[udf || (val < ValueType(0.0))] * std::sqrt(std::abs(val)); + } + } + } + +private: + LeafNodeType * * const mNodes; + const ValueType mVoxelSize; + const bool mUnsigned; +}; + + +// Inactivate values outside the (exBandWidth, inBandWidth) range. +template +struct InactivateValues +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + InactivateValues(std::vector& nodes, + ValueType exBandWidth, ValueType inBandWidth) + : mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mExBandWidth(exBandWidth) + , mInBandWidth(inBandWidth) + { + } + + void operator()(const tbb::blocked_range& range) const { + + typename LeafNodeType::ValueOnIter iter; + const ValueType exVal = mExBandWidth; + const ValueType inVal = -mInBandWidth; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + for (iter = mNodes[n]->beginValueOn(); iter; ++iter) { + + ValueType& val = const_cast(iter.getValue()); + + const bool inside = val < ValueType(0.0); + + if (inside && !(val > inVal)) { + val = inVal; + iter.setValueOff(); + } else if (!inside && !(val < exVal)) { + val = exVal; + iter.setValueOff(); + } + } + } + } + +private: + LeafNodeType * * const mNodes; + const ValueType mExBandWidth, mInBandWidth; +}; + + +template +struct OffsetValues +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + OffsetValues(std::vector& nodes, ValueType offset) + : mNodes(nodes.empty() ? nullptr : &nodes[0]), mOffset(offset) + { + } + + void operator()(const tbb::blocked_range& range) const { + + const ValueType offset = mOffset; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + typename LeafNodeType::ValueOnIter iter = mNodes[n]->beginValueOn(); + + for (; iter; ++iter) { + ValueType& val = const_cast(iter.getValue()); + val += offset; + } + } + } + +private: + LeafNodeType * * const mNodes; + const ValueType mOffset; +}; + + +template +struct Renormalize +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + Renormalize(const TreeType& tree, const std::vector& nodes, + ValueType* buffer, ValueType voxelSize) + : mTree(&tree) + , mNodes(nodes.empty() ? nullptr : &nodes[0]) + , mBuffer(buffer) + , mVoxelSize(voxelSize) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using Vec3Type = math::Vec3; + + tree::ValueAccessor acc(*mTree); + + Coord ijk; + Vec3Type up, down; + + const ValueType dx = mVoxelSize, invDx = ValueType(1.0) / mVoxelSize; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + ValueType* bufferData = &mBuffer[n * LeafNodeType::SIZE]; + + typename LeafNodeType::ValueOnCIter iter = mNodes[n]->cbeginValueOn(); + for (; iter; ++iter) { + + const ValueType phi0 = *iter; + + ijk = iter.getCoord(); + + up[0] = acc.getValue(ijk.offsetBy(1, 0, 0)) - phi0; + up[1] = acc.getValue(ijk.offsetBy(0, 1, 0)) - phi0; + up[2] = acc.getValue(ijk.offsetBy(0, 0, 1)) - phi0; + + down[0] = phi0 - acc.getValue(ijk.offsetBy(-1, 0, 0)); + down[1] = phi0 - acc.getValue(ijk.offsetBy(0, -1, 0)); + down[2] = phi0 - acc.getValue(ijk.offsetBy(0, 0, -1)); + + const ValueType normSqGradPhi = math::GodunovsNormSqrd(phi0 > 0.0, down, up); + + const ValueType diff = math::Sqrt(normSqGradPhi) * invDx - ValueType(1.0); + const ValueType S = phi0 / (math::Sqrt(math::Pow2(phi0) + normSqGradPhi)); + + bufferData[iter.pos()] = phi0 - dx * S * diff; + } + } + } + +private: + TreeType const * const mTree; + LeafNodeType const * const * const mNodes; + ValueType * const mBuffer; + + const ValueType mVoxelSize; +}; + + +template +struct MinCombine +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + MinCombine(std::vector& nodes, const ValueType* buffer) + : mNodes(nodes.empty() ? nullptr : &nodes[0]), mBuffer(buffer) + { + } + + void operator()(const tbb::blocked_range& range) const { + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const ValueType* bufferData = &mBuffer[n * LeafNodeType::SIZE]; + + typename LeafNodeType::ValueOnIter iter = mNodes[n]->beginValueOn(); + + for (; iter; ++iter) { + ValueType& val = const_cast(iter.getValue()); + val = std::min(val, bufferData[iter.pos()]); + } + } + } + +private: + LeafNodeType * * const mNodes; + ValueType const * const mBuffer; +}; + + +} // mesh_to_volume_internal namespace + + +//////////////////////////////////////// + +// Utility method implementation + + +template +inline void +traceExteriorBoundaries(FloatTreeT& tree) +{ + using ConnectivityTable = mesh_to_volume_internal::LeafNodeConnectivityTable; + + ConnectivityTable nodeConnectivity(tree); + + std::vector zStartNodes, yStartNodes, xStartNodes; + + for (size_t n = 0; n < nodeConnectivity.size(); ++n) { + if (ConnectivityTable::INVALID_OFFSET == nodeConnectivity.offsetsPrevX()[n]) { + xStartNodes.push_back(n); + } + + if (ConnectivityTable::INVALID_OFFSET == nodeConnectivity.offsetsPrevY()[n]) { + yStartNodes.push_back(n); + } + + if (ConnectivityTable::INVALID_OFFSET == nodeConnectivity.offsetsPrevZ()[n]) { + zStartNodes.push_back(n); + } + } + + using SweepingOp = mesh_to_volume_internal::SweepExteriorSign; + + tbb::parallel_for(tbb::blocked_range(0, zStartNodes.size()), + SweepingOp(SweepingOp::Z_AXIS, zStartNodes, nodeConnectivity)); + + tbb::parallel_for(tbb::blocked_range(0, yStartNodes.size()), + SweepingOp(SweepingOp::Y_AXIS, yStartNodes, nodeConnectivity)); + + tbb::parallel_for(tbb::blocked_range(0, xStartNodes.size()), + SweepingOp(SweepingOp::X_AXIS, xStartNodes, nodeConnectivity)); + + const size_t numLeafNodes = nodeConnectivity.size(); + const size_t numVoxels = numLeafNodes * FloatTreeT::LeafNodeType::SIZE; + + std::unique_ptr changedNodeMaskA{new bool[numLeafNodes]}; + std::unique_ptr changedNodeMaskB{new bool[numLeafNodes]}; + std::unique_ptr changedVoxelMask{new bool[numVoxels]}; + + mesh_to_volume_internal::fillArray(changedNodeMaskA.get(), true, numLeafNodes); + mesh_to_volume_internal::fillArray(changedNodeMaskB.get(), false, numLeafNodes); + mesh_to_volume_internal::fillArray(changedVoxelMask.get(), false, numVoxels); + + const tbb::blocked_range nodeRange(0, numLeafNodes); + + bool nodesUpdated = false; + do { + tbb::parallel_for(nodeRange, mesh_to_volume_internal::SeedFillExteriorSign( + nodeConnectivity.nodes(), changedNodeMaskA.get())); + + tbb::parallel_for(nodeRange, mesh_to_volume_internal::SeedPoints( + nodeConnectivity, changedNodeMaskA.get(), changedNodeMaskB.get(), + changedVoxelMask.get())); + + changedNodeMaskA.swap(changedNodeMaskB); + + nodesUpdated = false; + for (size_t n = 0; n < numLeafNodes; ++n) { + nodesUpdated |= changedNodeMaskA[n]; + if (nodesUpdated) break; + } + + if (nodesUpdated) { + tbb::parallel_for(nodeRange, mesh_to_volume_internal::SyncVoxelMask( + nodeConnectivity.nodes(), changedNodeMaskA.get(), changedVoxelMask.get())); + } + } while (nodesUpdated); + +} // void traceExteriorBoundaries() + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +meshToVolume( + Interrupter& interrupter, + const MeshDataAdapter& mesh, + const math::Transform& transform, + float exteriorBandWidth, + float interiorBandWidth, + int flags, + typename GridType::template ValueConverter::Type * polygonIndexGrid) +{ + using GridTypePtr = typename GridType::Ptr; + using TreeType = typename GridType::TreeType; + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename GridType::ValueType; + + using Int32GridType = typename GridType::template ValueConverter::Type; + using Int32TreeType = typename Int32GridType::TreeType; + + using BoolTreeType = typename TreeType::template ValueConverter::Type; + + ////////// + + // Setup + + GridTypePtr distGrid(new GridType(std::numeric_limits::max())); + distGrid->setTransform(transform.copy()); + + ValueType exteriorWidth = ValueType(exteriorBandWidth); + ValueType interiorWidth = ValueType(interiorBandWidth); + + // Note: inf interior width is all right, this value makes the converter fill + // interior regions with distance values. + if (!std::isfinite(exteriorWidth) || std::isnan(interiorWidth)) { + std::stringstream msg; + msg << "Illegal narrow band width: exterior = " << exteriorWidth + << ", interior = " << interiorWidth; + OPENVDB_LOG_DEBUG(msg.str()); + return distGrid; + } + + const ValueType voxelSize = ValueType(transform.voxelSize()[0]); + + if (!std::isfinite(voxelSize) || math::isZero(voxelSize)) { + std::stringstream msg; + msg << "Illegal transform, voxel size = " << voxelSize; + OPENVDB_LOG_DEBUG(msg.str()); + return distGrid; + } + + // Convert narrow band width from voxel units to world space units. + exteriorWidth *= voxelSize; + // Avoid the unit conversion if the interior band width is set to + // inf or std::numeric_limits::max(). + if (interiorWidth < std::numeric_limits::max()) { + interiorWidth *= voxelSize; + } + + const bool computeSignedDistanceField = (flags & UNSIGNED_DISTANCE_FIELD) == 0; + const bool removeIntersectingVoxels = (flags & DISABLE_INTERSECTING_VOXEL_REMOVAL) == 0; + const bool renormalizeValues = (flags & DISABLE_RENORMALIZATION) == 0; + const bool trimNarrowBand = (flags & DISABLE_NARROW_BAND_TRIMMING) == 0; + + Int32GridType* indexGrid = nullptr; + + typename Int32GridType::Ptr temporaryIndexGrid; + + if (polygonIndexGrid) { + indexGrid = polygonIndexGrid; + } else { + temporaryIndexGrid.reset(new Int32GridType(Int32(util::INVALID_IDX))); + indexGrid = temporaryIndexGrid.get(); + } + + indexGrid->newTree(); + indexGrid->setTransform(transform.copy()); + + if (computeSignedDistanceField) { + distGrid->setGridClass(GRID_LEVEL_SET); + } else { + distGrid->setGridClass(GRID_UNKNOWN); + interiorWidth = ValueType(0.0); + } + + TreeType& distTree = distGrid->tree(); + Int32TreeType& indexTree = indexGrid->tree(); + + + ////////// + + // Voxelize mesh + + { + using VoxelizationDataType = mesh_to_volume_internal::VoxelizationData; + using DataTable = tbb::enumerable_thread_specific; + + DataTable data; + using Voxelizer = + mesh_to_volume_internal::VoxelizePolygons; + + const tbb::blocked_range polygonRange(0, mesh.polygonCount()); + + tbb::parallel_for(polygonRange, Voxelizer(data, mesh, &interrupter)); + + for (typename DataTable::iterator i = data.begin(); i != data.end(); ++i) { + VoxelizationDataType& dataItem = **i; + mesh_to_volume_internal::combineData( + distTree, indexTree, dataItem.distTree, dataItem.indexTree); + } + } + + // The progress estimates are based on the observed average time for a few different + // test cases and is only intended to provide some rough progression feedback to the user. + if (interrupter.wasInterrupted(30)) return distGrid; + + + ////////// + + // Classify interior and exterior regions + + if (computeSignedDistanceField) { + + // Determines the inside/outside state for the narrow band of voxels. + traceExteriorBoundaries(distTree); + + std::vector nodes; + nodes.reserve(distTree.leafCount()); + distTree.getNodes(nodes); + + const tbb::blocked_range nodeRange(0, nodes.size()); + + using SignOp = + mesh_to_volume_internal::ComputeIntersectingVoxelSign; + + tbb::parallel_for(nodeRange, SignOp(nodes, distTree, indexTree, mesh)); + + if (interrupter.wasInterrupted(45)) return distGrid; + + // Remove voxels created by self intersecting portions of the mesh. + if (removeIntersectingVoxels) { + + tbb::parallel_for(nodeRange, + mesh_to_volume_internal::ValidateIntersectingVoxels(distTree, nodes)); + + tbb::parallel_for(nodeRange, + mesh_to_volume_internal::RemoveSelfIntersectingSurface( + nodes, distTree, indexTree)); + + tools::pruneInactive(distTree, /*threading=*/true); + tools::pruneInactive(indexTree, /*threading=*/true); + } + } + + if (interrupter.wasInterrupted(50)) return distGrid; + + if (distTree.activeVoxelCount() == 0) { + distTree.clear(); + distTree.root().setBackground(exteriorWidth, /*updateChildNodes=*/false); + return distGrid; + } + + // Transform values (world space scaling etc.). + { + std::vector nodes; + nodes.reserve(distTree.leafCount()); + distTree.getNodes(nodes); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::TransformValues( + nodes, voxelSize, !computeSignedDistanceField)); + } + + // Propagate sign information into tile regions. + if (computeSignedDistanceField) { + distTree.root().setBackground(exteriorWidth, /*updateChildNodes=*/false); + tools::signedFloodFillWithValues(distTree, exteriorWidth, -interiorWidth); + } else { + tools::changeBackground(distTree, exteriorWidth); + } + + if (interrupter.wasInterrupted(54)) return distGrid; + + + ////////// + + // Expand the narrow band region + + const ValueType minBandWidth = voxelSize * ValueType(2.0); + + if (interiorWidth > minBandWidth || exteriorWidth > minBandWidth) { + + // Create the initial voxel mask. + BoolTreeType maskTree(false); + + { + std::vector nodes; + nodes.reserve(distTree.leafCount()); + distTree.getNodes(nodes); + + mesh_to_volume_internal::ConstructVoxelMask op(maskTree, distTree, nodes); + tbb::parallel_reduce(tbb::blocked_range(0, nodes.size()), op); + } + + // Progress estimation + unsigned maxIterations = std::numeric_limits::max(); + + float progress = 54.0f, step = 0.0f; + double estimated = + 2.0 * std::ceil((std::max(interiorWidth, exteriorWidth) - minBandWidth) / voxelSize); + + if (estimated < double(maxIterations)) { + maxIterations = unsigned(estimated); + step = 40.0f / float(maxIterations); + } + + std::vector maskNodes; + + unsigned count = 0; + while (true) { + + if (interrupter.wasInterrupted(int(progress))) return distGrid; + + const size_t maskNodeCount = maskTree.leafCount(); + if (maskNodeCount == 0) break; + + maskNodes.clear(); + maskNodes.reserve(maskNodeCount); + maskTree.getNodes(maskNodes); + + const tbb::blocked_range range(0, maskNodes.size()); + + tbb::parallel_for(range, + mesh_to_volume_internal::DiffLeafNodeMask(distTree, maskNodes)); + + mesh_to_volume_internal::expandNarrowband(distTree, indexTree, maskTree, maskNodes, + mesh, exteriorWidth, interiorWidth, voxelSize); + + if ((++count) >= maxIterations) break; + progress += step; + } + } + + if (interrupter.wasInterrupted(94)) return distGrid; + + if (!polygonIndexGrid) indexGrid->clear(); + + + ///////// + + // Renormalize distances to smooth out bumps caused by self intersecting + // and overlapping portions of the mesh and renormalize the level set. + + if (computeSignedDistanceField && renormalizeValues) { + + std::vector nodes; + nodes.reserve(distTree.leafCount()); + distTree.getNodes(nodes); + + std::unique_ptr buffer{new ValueType[LeafNodeType::SIZE * nodes.size()]}; + + const ValueType offset = ValueType(0.8 * voxelSize); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::OffsetValues(nodes, -offset)); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::Renormalize( + distTree, nodes, buffer.get(), voxelSize)); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::MinCombine(nodes, buffer.get())); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::OffsetValues( + nodes, offset - mesh_to_volume_internal::Tolerance::epsilon())); + } + + if (interrupter.wasInterrupted(99)) return distGrid; + + + ///////// + + // Remove active voxels that exceed the narrow band limits + + if (trimNarrowBand && std::min(interiorWidth, exteriorWidth) < voxelSize * ValueType(4.0)) { + + std::vector nodes; + nodes.reserve(distTree.leafCount()); + distTree.getNodes(nodes); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + mesh_to_volume_internal::InactivateValues( + nodes, exteriorWidth, computeSignedDistanceField ? interiorWidth : exteriorWidth)); + + tools::pruneLevelSet( + distTree, exteriorWidth, computeSignedDistanceField ? -interiorWidth : -exteriorWidth); + } + + return distGrid; +} + + +template +inline typename GridType::Ptr +meshToVolume( + const MeshDataAdapter& mesh, + const math::Transform& transform, + float exteriorBandWidth, + float interiorBandWidth, + int flags, + typename GridType::template ValueConverter::Type * polygonIndexGrid) +{ + util::NullInterrupter nullInterrupter; + return meshToVolume(nullInterrupter, mesh, transform, + exteriorBandWidth, interiorBandWidth, flags, polygonIndexGrid); +} + + +//////////////////////////////////////// + + +//{ +/// @cond OPENVDB_MESH_TO_VOLUME_INTERNAL + +/// @internal This overload is enabled only for grids with a scalar, floating-point ValueType. +template +inline typename std::enable_if::value, + typename GridType::Ptr>::type +doMeshConversion( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float exBandWidth, + float inBandWidth, + bool unsignedDistanceField = false) +{ + if (points.empty()) { + return typename GridType::Ptr(new GridType(typename GridType::ValueType(exBandWidth))); + } + + const size_t numPoints = points.size(); + std::unique_ptr indexSpacePoints{new Vec3s[numPoints]}; + + // transform points to local grid index space + tbb::parallel_for(tbb::blocked_range(0, numPoints), + mesh_to_volume_internal::TransformPoints( + &points[0], indexSpacePoints.get(), xform)); + + const int conversionFlags = unsignedDistanceField ? UNSIGNED_DISTANCE_FIELD : 0; + + if (quads.empty()) { + + QuadAndTriangleDataAdapter + mesh(indexSpacePoints.get(), numPoints, &triangles[0], triangles.size()); + + return meshToVolume( + interrupter, mesh, xform, exBandWidth, inBandWidth, conversionFlags); + + } else if (triangles.empty()) { + + QuadAndTriangleDataAdapter + mesh(indexSpacePoints.get(), numPoints, &quads[0], quads.size()); + + return meshToVolume( + interrupter, mesh, xform, exBandWidth, inBandWidth, conversionFlags); + } + + // pack primitives + + const size_t numPrimitives = triangles.size() + quads.size(); + std::unique_ptr prims{new Vec4I[numPrimitives]}; + + for (size_t n = 0, N = triangles.size(); n < N; ++n) { + const Vec3I& triangle = triangles[n]; + Vec4I& prim = prims[n]; + prim[0] = triangle[0]; + prim[1] = triangle[1]; + prim[2] = triangle[2]; + prim[3] = util::INVALID_IDX; + } + + const size_t offset = triangles.size(); + for (size_t n = 0, N = quads.size(); n < N; ++n) { + prims[offset + n] = quads[n]; + } + + QuadAndTriangleDataAdapter + mesh(indexSpacePoints.get(), numPoints, prims.get(), numPrimitives); + + return meshToVolume(interrupter, mesh, xform, + exBandWidth, inBandWidth, conversionFlags); +} + + +/// @internal This overload is enabled only for grids that do not have a scalar, +/// floating-point ValueType. +template +inline typename std::enable_if::value, + typename GridType::Ptr>::type +doMeshConversion( + Interrupter&, + const math::Transform& /*xform*/, + const std::vector& /*points*/, + const std::vector& /*triangles*/, + const std::vector& /*quads*/, + float /*exBandWidth*/, + float /*inBandWidth*/, + bool /*unsignedDistanceField*/ = false) +{ + OPENVDB_THROW(TypeError, + "mesh to volume conversion is supported only for scalar floating-point grids"); +} + +/// @endcond +//} + + +//////////////////////////////////////// + + +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + float halfWidth) +{ + util::NullInterrupter nullInterrupter; + std::vector quads(0); + return doMeshConversion(nullInterrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + float halfWidth) +{ + std::vector quads(0); + return doMeshConversion(interrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& quads, + float halfWidth) +{ + util::NullInterrupter nullInterrupter; + std::vector triangles(0); + return doMeshConversion(nullInterrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& quads, + float halfWidth) +{ + std::vector triangles(0); + return doMeshConversion(interrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToLevelSet( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float halfWidth) +{ + util::NullInterrupter nullInterrupter; + return doMeshConversion(nullInterrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToLevelSet( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float halfWidth) +{ + return doMeshConversion(interrupter, xform, points, triangles, quads, + halfWidth, halfWidth); +} + + +template +inline typename GridType::Ptr +meshToSignedDistanceField( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float exBandWidth, + float inBandWidth) +{ + util::NullInterrupter nullInterrupter; + return doMeshConversion(nullInterrupter, xform, points, triangles, + quads, exBandWidth, inBandWidth); +} + + +template +inline typename GridType::Ptr +meshToSignedDistanceField( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float exBandWidth, + float inBandWidth) +{ + return doMeshConversion(interrupter, xform, points, triangles, + quads, exBandWidth, inBandWidth); +} + + +template +inline typename GridType::Ptr +meshToUnsignedDistanceField( + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float bandWidth) +{ + util::NullInterrupter nullInterrupter; + return doMeshConversion(nullInterrupter, xform, points, triangles, quads, + bandWidth, bandWidth, true); +} + + +template +inline typename GridType::Ptr +meshToUnsignedDistanceField( + Interrupter& interrupter, + const openvdb::math::Transform& xform, + const std::vector& points, + const std::vector& triangles, + const std::vector& quads, + float bandWidth) +{ + return doMeshConversion(interrupter, xform, points, triangles, quads, + bandWidth, bandWidth, true); +} + + +//////////////////////////////////////////////////////////////////////////////// + + +// Required by several of the tree nodes +inline std::ostream& +operator<<(std::ostream& ostr, const MeshToVoxelEdgeData::EdgeData& rhs) +{ + ostr << "{[ " << rhs.mXPrim << ", " << rhs.mXDist << "]"; + ostr << " [ " << rhs.mYPrim << ", " << rhs.mYDist << "]"; + ostr << " [ " << rhs.mZPrim << ", " << rhs.mZDist << "]}"; + return ostr; +} + +// Required by math::Abs +inline MeshToVoxelEdgeData::EdgeData +Abs(const MeshToVoxelEdgeData::EdgeData& x) +{ + return x; +} + + +//////////////////////////////////////// + + +class MeshToVoxelEdgeData::GenEdgeData +{ +public: + + GenEdgeData( + const std::vector& pointList, + const std::vector& polygonList); + + void run(bool threaded = true); + + GenEdgeData(GenEdgeData& rhs, tbb::split); + inline void operator() (const tbb::blocked_range &range); + inline void join(GenEdgeData& rhs); + + inline TreeType& tree() { return mTree; } + +private: + void operator=(const GenEdgeData&) {} + + struct Primitive { Vec3d a, b, c, d; Int32 index; }; + + template + inline void voxelize(const Primitive&); + + template + inline bool evalPrimitive(const Coord&, const Primitive&); + + inline bool rayTriangleIntersection( const Vec3d& origin, const Vec3d& dir, + const Vec3d& a, const Vec3d& b, const Vec3d& c, double& t); + + + TreeType mTree; + Accessor mAccessor; + + const std::vector& mPointList; + const std::vector& mPolygonList; + + // Used internally for acceleration + using IntTreeT = TreeType::ValueConverter::Type; + IntTreeT mLastPrimTree; + tree::ValueAccessor mLastPrimAccessor; +}; // class MeshToVoxelEdgeData::GenEdgeData + + +inline +MeshToVoxelEdgeData::GenEdgeData::GenEdgeData( + const std::vector& pointList, + const std::vector& polygonList) + : mTree(EdgeData()) + , mAccessor(mTree) + , mPointList(pointList) + , mPolygonList(polygonList) + , mLastPrimTree(Int32(util::INVALID_IDX)) + , mLastPrimAccessor(mLastPrimTree) +{ +} + + +inline +MeshToVoxelEdgeData::GenEdgeData::GenEdgeData(GenEdgeData& rhs, tbb::split) + : mTree(EdgeData()) + , mAccessor(mTree) + , mPointList(rhs.mPointList) + , mPolygonList(rhs.mPolygonList) + , mLastPrimTree(Int32(util::INVALID_IDX)) + , mLastPrimAccessor(mLastPrimTree) +{ +} + + +inline void +MeshToVoxelEdgeData::GenEdgeData::run(bool threaded) +{ + if (threaded) { + tbb::parallel_reduce(tbb::blocked_range(0, mPolygonList.size()), *this); + } else { + (*this)(tbb::blocked_range(0, mPolygonList.size())); + } +} + + +inline void +MeshToVoxelEdgeData::GenEdgeData::join(GenEdgeData& rhs) +{ + using RootNodeType = TreeType::RootNodeType; + using NodeChainType = RootNodeType::NodeChainType; + static_assert(boost::mpl::size::value > 1, "expected tree height > 1"); + using InternalNodeType = boost::mpl::at >::type; + + Coord ijk; + Index offset; + + rhs.mTree.clearAllAccessors(); + + TreeType::LeafIter leafIt = rhs.mTree.beginLeaf(); + for ( ; leafIt; ++leafIt) { + ijk = leafIt->origin(); + + TreeType::LeafNodeType* lhsLeafPt = mTree.probeLeaf(ijk); + + if (!lhsLeafPt) { + + mAccessor.addLeaf(rhs.mAccessor.probeLeaf(ijk)); + InternalNodeType* node = rhs.mAccessor.getNode(); + node->stealNode(ijk, EdgeData(), false); + rhs.mAccessor.clear(); + + } else { + + TreeType::LeafNodeType::ValueOnCIter it = leafIt->cbeginValueOn(); + for ( ; it; ++it) { + + offset = it.pos(); + const EdgeData& rhsValue = it.getValue(); + + if (!lhsLeafPt->isValueOn(offset)) { + lhsLeafPt->setValueOn(offset, rhsValue); + } else { + + EdgeData& lhsValue = const_cast(lhsLeafPt->getValue(offset)); + + if (rhsValue.mXDist < lhsValue.mXDist) { + lhsValue.mXDist = rhsValue.mXDist; + lhsValue.mXPrim = rhsValue.mXPrim; + } + + if (rhsValue.mYDist < lhsValue.mYDist) { + lhsValue.mYDist = rhsValue.mYDist; + lhsValue.mYPrim = rhsValue.mYPrim; + } + + if (rhsValue.mZDist < lhsValue.mZDist) { + lhsValue.mZDist = rhsValue.mZDist; + lhsValue.mZPrim = rhsValue.mZPrim; + } + + } + } // end value iteration + } + } // end leaf iteration +} + + +inline void +MeshToVoxelEdgeData::GenEdgeData::operator()(const tbb::blocked_range &range) +{ + Primitive prim; + + for (size_t n = range.begin(); n < range.end(); ++n) { + + const Vec4I& verts = mPolygonList[n]; + + prim.index = Int32(n); + prim.a = Vec3d(mPointList[verts[0]]); + prim.b = Vec3d(mPointList[verts[1]]); + prim.c = Vec3d(mPointList[verts[2]]); + + if (util::INVALID_IDX != verts[3]) { + prim.d = Vec3d(mPointList[verts[3]]); + voxelize(prim); + } else { + voxelize(prim); + } + } +} + + +template +inline void +MeshToVoxelEdgeData::GenEdgeData::voxelize(const Primitive& prim) +{ + std::deque coordList; + Coord ijk, nijk; + + ijk = Coord::floor(prim.a); + coordList.push_back(ijk); + + evalPrimitive(ijk, prim); + + while (!coordList.empty()) { + + ijk = coordList.back(); + coordList.pop_back(); + + for (Int32 i = 0; i < 26; ++i) { + nijk = ijk + util::COORD_OFFSETS[i]; + + if (prim.index != mLastPrimAccessor.getValue(nijk)) { + mLastPrimAccessor.setValue(nijk, prim.index); + if(evalPrimitive(nijk, prim)) coordList.push_back(nijk); + } + } + } +} + + +template +inline bool +MeshToVoxelEdgeData::GenEdgeData::evalPrimitive(const Coord& ijk, const Primitive& prim) +{ + Vec3d uvw, org(ijk[0], ijk[1], ijk[2]); + bool intersecting = false; + double t; + + EdgeData edgeData; + mAccessor.probeValue(ijk, edgeData); + + // Evaluate first triangle + double dist = (org - + closestPointOnTriangleToPoint(prim.a, prim.c, prim.b, org, uvw)).lengthSqr(); + + if (rayTriangleIntersection(org, Vec3d(1.0, 0.0, 0.0), prim.a, prim.c, prim.b, t)) { + if (t < edgeData.mXDist) { + edgeData.mXDist = float(t); + edgeData.mXPrim = prim.index; + intersecting = true; + } + } + + if (rayTriangleIntersection(org, Vec3d(0.0, 1.0, 0.0), prim.a, prim.c, prim.b, t)) { + if (t < edgeData.mYDist) { + edgeData.mYDist = float(t); + edgeData.mYPrim = prim.index; + intersecting = true; + } + } + + if (rayTriangleIntersection(org, Vec3d(0.0, 0.0, 1.0), prim.a, prim.c, prim.b, t)) { + if (t < edgeData.mZDist) { + edgeData.mZDist = float(t); + edgeData.mZPrim = prim.index; + intersecting = true; + } + } + + if (IsQuad) { + // Split quad into a second triangle and calculate distance. + double secondDist = (org - + closestPointOnTriangleToPoint(prim.a, prim.d, prim.c, org, uvw)).lengthSqr(); + + if (secondDist < dist) dist = secondDist; + + if (rayTriangleIntersection(org, Vec3d(1.0, 0.0, 0.0), prim.a, prim.d, prim.c, t)) { + if (t < edgeData.mXDist) { + edgeData.mXDist = float(t); + edgeData.mXPrim = prim.index; + intersecting = true; + } + } + + if (rayTriangleIntersection(org, Vec3d(0.0, 1.0, 0.0), prim.a, prim.d, prim.c, t)) { + if (t < edgeData.mYDist) { + edgeData.mYDist = float(t); + edgeData.mYPrim = prim.index; + intersecting = true; + } + } + + if (rayTriangleIntersection(org, Vec3d(0.0, 0.0, 1.0), prim.a, prim.d, prim.c, t)) { + if (t < edgeData.mZDist) { + edgeData.mZDist = float(t); + edgeData.mZPrim = prim.index; + intersecting = true; + } + } + } + + if (intersecting) mAccessor.setValue(ijk, edgeData); + + return (dist < 0.86602540378443861); +} + + +inline bool +MeshToVoxelEdgeData::GenEdgeData::rayTriangleIntersection( + const Vec3d& origin, const Vec3d& dir, + const Vec3d& a, const Vec3d& b, const Vec3d& c, + double& t) +{ + // Check if ray is parallel with triangle + + Vec3d e1 = b - a; + Vec3d e2 = c - a; + Vec3d s1 = dir.cross(e2); + + double divisor = s1.dot(e1); + if (!(std::abs(divisor) > 0.0)) return false; + + // Compute barycentric coordinates + + double inv_divisor = 1.0 / divisor; + Vec3d d = origin - a; + double b1 = d.dot(s1) * inv_divisor; + + if (b1 < 0.0 || b1 > 1.0) return false; + + Vec3d s2 = d.cross(e1); + double b2 = dir.dot(s2) * inv_divisor; + + if (b2 < 0.0 || (b1 + b2) > 1.0) return false; + + // Compute distance to intersection point + + t = e2.dot(s2) * inv_divisor; + return (t < 0.0) ? false : true; +} + + +//////////////////////////////////////// + + +inline +MeshToVoxelEdgeData::MeshToVoxelEdgeData() + : mTree(EdgeData()) +{ +} + + +inline void +MeshToVoxelEdgeData::convert( + const std::vector& pointList, + const std::vector& polygonList) +{ + GenEdgeData converter(pointList, polygonList); + converter.run(); + + mTree.clear(); + mTree.merge(converter.tree()); +} + + +inline void +MeshToVoxelEdgeData::getEdgeData( + Accessor& acc, + const Coord& ijk, + std::vector& points, + std::vector& primitives) +{ + EdgeData data; + Vec3d point; + + Coord coord = ijk; + + if (acc.probeValue(coord, data)) { + + if (data.mXPrim != util::INVALID_IDX) { + point[0] = double(coord[0]) + data.mXDist; + point[1] = double(coord[1]); + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mXPrim); + } + + if (data.mYPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]) + data.mYDist; + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mYPrim); + } + + if (data.mZPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]); + point[2] = double(coord[2]) + data.mZDist; + + points.push_back(point); + primitives.push_back(data.mZPrim); + } + + } + + coord[0] += 1; + + if (acc.probeValue(coord, data)) { + + if (data.mYPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]) + data.mYDist; + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mYPrim); + } + + if (data.mZPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]); + point[2] = double(coord[2]) + data.mZDist; + + points.push_back(point); + primitives.push_back(data.mZPrim); + } + } + + coord[2] += 1; + + if (acc.probeValue(coord, data)) { + if (data.mYPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]) + data.mYDist; + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mYPrim); + } + } + + coord[0] -= 1; + + if (acc.probeValue(coord, data)) { + + if (data.mXPrim != util::INVALID_IDX) { + point[0] = double(coord[0]) + data.mXDist; + point[1] = double(coord[1]); + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mXPrim); + } + + if (data.mYPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]) + data.mYDist; + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mYPrim); + } + } + + + coord[1] += 1; + + if (acc.probeValue(coord, data)) { + + if (data.mXPrim != util::INVALID_IDX) { + point[0] = double(coord[0]) + data.mXDist; + point[1] = double(coord[1]); + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mXPrim); + } + } + + coord[2] -= 1; + + if (acc.probeValue(coord, data)) { + + if (data.mXPrim != util::INVALID_IDX) { + point[0] = double(coord[0]) + data.mXDist; + point[1] = double(coord[1]); + point[2] = double(coord[2]); + + points.push_back(point); + primitives.push_back(data.mXPrim); + } + + if (data.mZPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]); + point[2] = double(coord[2]) + data.mZDist; + + points.push_back(point); + primitives.push_back(data.mZPrim); + } + } + + coord[0] += 1; + + if (acc.probeValue(coord, data)) { + + if (data.mZPrim != util::INVALID_IDX) { + point[0] = double(coord[0]); + point[1] = double(coord[1]); + point[2] = double(coord[2]) + data.mZDist; + + points.push_back(point); + primitives.push_back(data.mZPrim); + } + } +} + + +template +inline typename GridType::Ptr +createLevelSetBox(const math::BBox& bbox, + const openvdb::math::Transform& xform, + typename VecType::ValueType halfWidth) +{ + const Vec3s pmin = Vec3s(xform.worldToIndex(bbox.min())); + const Vec3s pmax = Vec3s(xform.worldToIndex(bbox.max())); + + Vec3s points[8]; + points[0] = Vec3s(pmin[0], pmin[1], pmin[2]); + points[1] = Vec3s(pmin[0], pmin[1], pmax[2]); + points[2] = Vec3s(pmax[0], pmin[1], pmax[2]); + points[3] = Vec3s(pmax[0], pmin[1], pmin[2]); + points[4] = Vec3s(pmin[0], pmax[1], pmin[2]); + points[5] = Vec3s(pmin[0], pmax[1], pmax[2]); + points[6] = Vec3s(pmax[0], pmax[1], pmax[2]); + points[7] = Vec3s(pmax[0], pmax[1], pmin[2]); + + Vec4I faces[6]; + faces[0] = Vec4I(0, 1, 2, 3); // bottom + faces[1] = Vec4I(7, 6, 5, 4); // top + faces[2] = Vec4I(4, 5, 1, 0); // front + faces[3] = Vec4I(6, 7, 3, 2); // back + faces[4] = Vec4I(0, 3, 7, 4); // left + faces[5] = Vec4I(1, 5, 6, 2); // right + + QuadAndTriangleDataAdapter mesh(points, 8, faces, 6); + + return meshToVolume(mesh, xform, halfWidth, halfWidth); +} + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_MESH_TO_VOLUME_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Morphology.h b/openvdb/tools/Morphology.h new file mode 100644 index 00000000..f6596543 --- /dev/null +++ b/openvdb/tools/Morphology.h @@ -0,0 +1,1069 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Morphology.h +/// +/// @brief Implementation of morphological dilation and erosion. +/// +/// @note By design the morphological operations only change the +/// state of voxels, not their values. If one desires to +/// change the values of voxels that change state an efficient +/// technique is to construct a boolean mask by performing a +/// topology difference between the original and final grids. +/// +/// @todo Extend erosion with 18 and 26 neighbors (coming soon!) +/// +/// @author Ken Museth +/// + +#ifndef OPENVDB_TOOLS_MORPHOLOGY_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_MORPHOLOGY_HAS_BEEN_INCLUDED + +#include +#include +#include // for isApproxEqual() +#include +#include +#include +#include "Prune.h"// for pruneLevelSet +#include "ValueTransformer.h" // for foreach() +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Voxel topology of nearest neighbors +/// @details +///
+///
NN_FACE +///
face adjacency (6 nearest neighbors, defined as all neighbor +/// voxels connected along one of the primary axes) +/// +///
NN_FACE_EDGE +///
face and edge adjacency (18 nearest neighbors, defined as all +/// neighbor voxels connected along either one or two of the primary axes) +/// +///
NN_FACE_EDGE_VERTEX +///
face, edge and vertex adjacency (26 nearest neighbors, defined +/// as all neighbor voxels connected along either one, two or all +/// three of the primary axes) +///
+enum NearestNeighbors { NN_FACE = 6, NN_FACE_EDGE = 18, NN_FACE_EDGE_VERTEX = 26 }; + +/// @brief Different policies when dilating trees with active tiles +/// @details +///
+///
IGNORE_TILES +///
Active tiles are ignores, i.e. only active voxels are dilates. +/// +///
EXPAND_TILES +///
Active tiles are expanded into active voxels and then dilated. +/// +///
PRESERVE_TILES +///
Active tiles remain unchanged but they still contribute to the +/// dilation as if they were active voxels. +///
+enum TilePolicy { IGNORE_TILES, EXPAND_TILES, PRESERVE_TILES }; + +/// @brief Topologically dilate all active values (i.e. both voxels +/// and tiles) in a tree using one of three nearest neighbor +/// connectivity patterns. +/// @note This method is fully multi-threaded and support active tiles! +/// +/// @param tree tree to be dilated +/// @param iterations number of iterations to apply the dilation +/// @param nn connectivity pattern of the dilation: either +/// face-adjacent (6 nearest neighbors), face- and edge-adjacent +/// (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 +/// nearest neighbors). +/// @param mode Defined the policy for handling active tiles +/// (see above for details) +/// +/// @note The values of any voxels are unchanged. +template OPENVDB_STATIC_SPECIALIZATION +inline void dilateActiveValues(TreeType& tree, + int iterations = 1, + NearestNeighbors nn = NN_FACE, + TilePolicy mode = PRESERVE_TILES); + +/// @brief Topologically dilate all active values (i.e. both voxels +/// and tiles) in a tree using one of three nearest neighbor +/// connectivity patterns. +/// +/// @warning Unlike the method above this one takes a LeafManger, +/// however (unlike dilateVoxels method below) it offers no performance +/// advantage over the one that takes a tree. Its merely included for +/// API compatability. The leaf nodes in the manger are updated +/// after the dilation, which incurres a (very small) overhead. +/// +/// @note This method is fully multi-threaded and support active tiles! +/// +/// @param manager Leaf node manager for the tree to be dilated. +/// On exit it is updated to include all the leaf +/// nodes of the dilated tree. +/// @param iterations number of iterations to apply the dilation +/// @param nn connectivity pattern of the dilation: either +/// face-adjacent (6 nearest neighbors), face- and edge-adjacent +/// (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 +/// nearest neighbors). +/// @param mode Defined the policy for handling active tiles +/// (see above for details) +/// +/// @note The values of any voxels are unchanged. +template OPENVDB_STATIC_SPECIALIZATION +inline void dilateActiveValues(tree::LeafManager& manager, + int iterations = 1, + NearestNeighbors nn = NN_FACE, + TilePolicy mode = PRESERVE_TILES); + + +/// @brief Topologically dilate all leaf-level active voxels in a tree +/// using one of three nearest neighbor connectivity patterns. +/// @warning This method is NOT multi-threaded and ignores active tiles! +/// +/// @param tree tree to be dilated +/// @param iterations number of iterations to apply the dilation +/// @param nn connectivity pattern of the dilation: either +/// face-adjacent (6 nearest neighbors), face- and edge-adjacent +/// (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 +/// nearest neighbors). +/// +/// @note The values of any voxels are unchanged. +template OPENVDB_STATIC_SPECIALIZATION +inline void dilateVoxels(TreeType& tree, + int iterations = 1, + NearestNeighbors nn = NN_FACE); + +/// @brief Topologically dilate all leaf-level active voxels in a tree +/// using one of three nearest neighbor connectivity patterns. +/// @warning This method is NOT multi-threaded and ignores active tiles! +/// +/// @param manager LeafManager containing the tree to be dilated. +/// On exit it is updated to include all the leaf +/// nodes of the dilated tree. +/// @param iterations number of iterations to apply the dilation +/// @param nn connectivity pattern of the dilation: either +/// face-adjacent (6 nearest neighbors), face- and edge-adjacent +/// (18 nearest neighbors) or face-, edge- and vertex-adjacent (26 +/// nearest neighbors). +/// +/// @note The values of any voxels are unchanged. +template OPENVDB_STATIC_SPECIALIZATION +inline void dilateVoxels(tree::LeafManager& manager, + int iterations = 1, + NearestNeighbors nn = NN_FACE); + + +//@{ +/// @brief Topologically erode all leaf-level active voxels in the given tree. +/// @details That is, shrink the set of active voxels by @a iterations voxels +/// in the +x, -x, +y, -y, +z and -z directions, but don't change the values +/// of any voxels, only their active states. +/// @todo Currently operates only on leaf voxels; need to extend to tiles. +template OPENVDB_STATIC_SPECIALIZATION +inline void erodeVoxels(TreeType& tree, + int iterations=1, + NearestNeighbors nn = NN_FACE); + +template OPENVDB_STATIC_SPECIALIZATION +inline void erodeVoxels(tree::LeafManager& manager, + int iterations = 1, + NearestNeighbors nn = NN_FACE); +//@} + + +/// @brief Mark as active any inactive tiles or voxels in the given grid or tree +/// whose values are equal to @a value (optionally to within the given @a tolerance). +template +inline void activate( + GridOrTree&, + const typename GridOrTree::ValueType& value, + const typename GridOrTree::ValueType& tolerance = zeroVal() +); + + +/// @brief Mark as inactive any active tiles or voxels in the given grid or tree +/// whose values are equal to @a value (optionally to within the given @a tolerance). +template +inline void deactivate( + GridOrTree&, + const typename GridOrTree::ValueType& value, + const typename GridOrTree::ValueType& tolerance = zeroVal() +); + + +//////////////////////////////////////// + + +/// Mapping from a Log2Dim to a data type of size 2^Log2Dim bits +template struct DimToWord {}; +template<> struct DimToWord<3> { using Type = uint8_t; }; +template<> struct DimToWord<4> { using Type = uint16_t; }; +template<> struct DimToWord<5> { using Type = uint32_t; }; +template<> struct DimToWord<6> { using Type = uint64_t; }; + + +//////////////////////////////////////// + + +template +class Morphology +{ +public: + using ManagerType = tree::LeafManager; + + Morphology(TreeType& tree): + mOwnsManager(true), mManager(new ManagerType(tree)), mAcc(tree), mSteps(1) {} + Morphology(ManagerType* mgr): + mOwnsManager(false), mManager(mgr), mAcc(mgr->tree()), mSteps(1) {} + virtual ~Morphology() { if (mOwnsManager) delete mManager; } + + /// @brief Face-adjacent dilation pattern + void dilateVoxels6(); + /// @brief Face- and edge-adjacent dilation pattern. + void dilateVoxels18(); + /// @brief Face-, edge- and vertex-adjacent dilation pattern. + void dilateVoxels26(); + void dilateVoxels(int iterations = 1, NearestNeighbors nn = NN_FACE); + + /// @brief Face-adjacent erosion pattern. + void erodeVoxels6() { mSteps = 1; this->doErosion(NN_FACE); } + /// @brief Face- and edge-adjacent erosion pattern. + void erodeVoxels18() { mSteps = 1; this->doErosion(NN_FACE_EDGE); } + /// @brief Face-, edge- and vertex-adjacent erosion pattern. + void erodeVoxels26() { mSteps = 1; this->doErosion(NN_FACE_EDGE_VERTEX); } + void erodeVoxels(int iterations = 1, NearestNeighbors nn = NN_FACE) + { + mSteps = iterations; + this->doErosion(nn); + } + +protected: + + void doErosion(NearestNeighbors nn); + + using LeafType = typename TreeType::LeafNodeType; + using MaskType = typename LeafType::NodeMaskType; + using AccessorType = tree::ValueAccessor; + + const bool mOwnsManager; + ManagerType* mManager; + AccessorType mAcc; + int mSteps; + + static const int LEAF_DIM = LeafType::DIM; + static const int LEAF_LOG2DIM = LeafType::LOG2DIM; + using Word = typename DimToWord::Type; + + struct Neighbor { + LeafType* leaf;//null if a tile + bool init;//true if initialization is required + bool isOn;//true if an active tile + Neighbor() : leaf(nullptr), init(true) {} + inline void clear() { leaf = nullptr; init = true; } + template + void scatter(AccessorType& acc, const Coord &xyz, int indx, Word mask) + { + if (init) { + init = false; + Coord orig = xyz.offsetBy(DX*LEAF_DIM, DY*LEAF_DIM, DZ*LEAF_DIM); + leaf = acc.probeLeaf(orig); + if ((leaf == nullptr) && !acc.isValueOn(orig)) leaf = acc.touchLeaf(orig); + } + static const int N = (LEAF_DIM - 1)*(DY + DX*LEAF_DIM); + if (leaf) leaf->getValueMask().template getWord(indx-N) |= mask; + } + + template + Word gather(AccessorType& acc, const Coord &xyz, int indx) + { + if (init) { + init = false; + Coord orig = xyz.offsetBy(DX*LEAF_DIM, DY*LEAF_DIM, DZ*LEAF_DIM); + leaf = acc.probeLeaf(orig); + isOn = leaf ? false : acc.isValueOn(orig); + } + static const int N = (LEAF_DIM -1 )*(DY + DX*LEAF_DIM); + return leaf ? leaf->getValueMask().template getWord(indx-N) + : isOn ? ~Word(0) : Word(0); + } + };// Neighbor + + struct LeafCache + { + LeafCache(size_t n, TreeType& tree) : size(n), leafs(new LeafType*[n]), acc(tree) + { + onTile.setValuesOn(); + this->clear(); + } + ~LeafCache() { delete [] leafs; } + LeafType*& operator[](int offset) { return leafs[offset]; } + inline void clear() { for (size_t i = 0; i < size; ++i) leafs[i] = nullptr; } + inline void setOrigin(const Coord& xyz) { origin = &xyz; } + inline void scatter(int n, int indx) + { + assert(leafs[n]); + leafs[n]->getValueMask().template getWord(indx) |= mask; + } + template + inline void scatter(int n, int indx) + { + if (!leafs[n]) { + const Coord xyz = origin->offsetBy(DX*LEAF_DIM, DY*LEAF_DIM, DZ*LEAF_DIM); + leafs[n] = acc.probeLeaf(xyz); + if (!leafs[n]) leafs[n] = acc.isValueOn(xyz) ? &onTile : acc.touchLeaf(xyz); + } + this->scatter(n, indx - (LEAF_DIM - 1)*(DY + DX*LEAF_DIM)); + } + inline Word gather(int n, int indx) + { + assert(leafs[n]); + return leafs[n]->getValueMask().template getWord(indx); + } + template + inline Word gather(int n, int indx) + { + if (!leafs[n]) { + const Coord xyz = origin->offsetBy(DX*LEAF_DIM, DY*LEAF_DIM, DZ*LEAF_DIM); + leafs[n] = acc.probeLeaf(xyz); + if (!leafs[n]) leafs[n] = acc.isValueOn(xyz) ? &onTile : &offTile; + } + return this->gather(n, indx - (LEAF_DIM -1 )*(DY + DX*LEAF_DIM)); + } + // Scatters in the xy face-directions relative to leaf i1 + void scatterFacesXY(int x, int y, int i1, int n, int i2); + + // Scatters in the xy edge-directions relative to leaf i1 + void scatterEdgesXY(int x, int y, int i1, int n, int i2); + + Word gatherFacesXY(int x, int y, int i1, int n, int i2); + + Word gatherEdgesXY(int x, int y, int i1, int n, int i2); + + const Coord* origin; + size_t size; + LeafType** leafs; + LeafType onTile, offTile; + AccessorType acc; + Word mask; + };// LeafCache + + struct ErodeVoxelsOp { + using RangeT = tbb::blocked_range; + ErodeVoxelsOp(std::vector& masks, ManagerType& manager) + : mTask(nullptr), mSavedMasks(masks) , mManager(manager) {} + void runParallel(NearestNeighbors nn); + void operator()(const RangeT& r) const {mTask(const_cast(this), r);} + void erode6( const RangeT&) const; + void erode18(const RangeT&) const; + void erode26(const RangeT&) const; + private: + using FuncT = typename std::function; + FuncT mTask; + std::vector& mSavedMasks; + ManagerType& mManager; + };// ErodeVoxelsOp + + struct MaskManager { + MaskManager(std::vector& masks, ManagerType& manager) + : mMasks(masks) , mManager(manager), mSaveMasks(true) {} + + void save() { mSaveMasks = true; tbb::parallel_for(mManager.getRange(), *this); } + void update() { mSaveMasks = false; tbb::parallel_for(mManager.getRange(), *this); } + void operator()(const tbb::blocked_range& range) const + { + if (mSaveMasks) { + for (size_t i = range.begin(); i < range.end(); ++i) { + mMasks[i] = mManager.leaf(i).getValueMask(); + } + } else { + for (size_t i = range.begin(); i < range.end(); ++i) { + mManager.leaf(i).setValueMask(mMasks[i]); + } + } + } + private: + std::vector& mMasks; + ManagerType& mManager; + bool mSaveMasks; + };// MaskManager + + struct UpdateMasks { + UpdateMasks(const std::vector& masks, ManagerType& manager) + : mMasks(masks), mManager(manager) {} + void update() { tbb::parallel_for(mManager.getRange(), *this); } + void operator()(const tbb::blocked_range& r) const { + for (size_t i=r.begin(); i& mMasks; + ManagerType& mManager; + }; + struct CopyMasks { + CopyMasks(std::vector& masks, const ManagerType& manager) + : mMasks(masks), mManager(manager) {} + void copy() { tbb::parallel_for(mManager.getRange(), *this); } + void operator()(const tbb::blocked_range& r) const { + for (size_t i=r.begin(); i& mMasks; + const ManagerType& mManager; + }; + void copyMasks(std::vector& a, const ManagerType& b) {CopyMasks c(a, b); c.copy();} +};// Morphology + + +template +inline void +Morphology::dilateVoxels(int iterations, NearestNeighbors nn) +{ + for (int i=0; idilateVoxels18(); + break; + case NN_FACE_EDGE_VERTEX: + this->dilateVoxels26(); + break; + case NN_FACE: + default: + this->dilateVoxels6(); + } + } +} + + +template +inline void +Morphology::dilateVoxels6() +{ + /// @todo Currently operates only on leaf voxels; need to extend to tiles. + const int leafCount = static_cast(mManager->leafCount()); + + // Save the value masks of all leaf nodes. + std::vector savedMasks(leafCount); + this->copyMasks(savedMasks, *mManager); + LeafCache cache(7, mManager->tree()); + for (int leafIdx = 0; leafIdx < leafCount; ++leafIdx) { + const MaskType& oldMask = savedMasks[leafIdx];//original bit-mask of current leaf node + cache[0] = &mManager->leaf(leafIdx); + cache.setOrigin(cache[0]->origin()); + for (int x = 0; x < LEAF_DIM; ++x ) { + for (int y = 0, n = (x << LEAF_LOG2DIM); y < LEAF_DIM; ++y, ++n) { + // Extract the portion of the original mask that corresponds to a row in z. + if (const Word w = oldMask.template getWord(n)) { + + // Dilate the current leaf in the +z and -z direction + cache.mask = Word(w | (w>>1) | (w<<1)); cache.scatter(0, n); + + // Dilate into neighbor leaf in the -z direction + if ( (cache.mask = Word(w<<(LEAF_DIM-1))) ) { + cache.template scatter< 0, 0,-1>(1, n); + } + // Dilate into neighbor leaf in the +z direction + if ( (cache.mask = Word(w>>(LEAF_DIM-1))) ) { + cache.template scatter< 0, 0, 1>(2, n); + } + // Dilate in the xy-face directions relative to the center leaf + cache.mask = w; cache.scatterFacesXY(x, y, 0, n, 3); + } + }// loop over y + }//loop over x + cache.clear(); + }//loop over leafs + + mManager->rebuildLeafArray(); +}//dilateVoxels6 + + +template +inline void +Morphology::dilateVoxels18() +{ + /// @todo Currently operates only on leaf voxels; need to extend to tiles. + const int leafCount = static_cast(mManager->leafCount()); + + // Save the value masks of all leaf nodes. + std::vector savedMasks(leafCount); + this->copyMasks(savedMasks, *mManager); + LeafCache cache(19, mManager->tree()); + Coord orig_mz, orig_pz;//origins of neighbor leaf nodes in the -z and +z directions + for (int leafIdx = 0; leafIdx < leafCount; ++leafIdx) { + const MaskType& oldMask = savedMasks[leafIdx];//original bit-mask of current leaf node + cache[0] = &mManager->leaf(leafIdx); + orig_mz = cache[0]->origin().offsetBy(0, 0, -LEAF_DIM); + orig_pz = cache[0]->origin().offsetBy(0, 0, LEAF_DIM); + for (int x = 0; x < LEAF_DIM; ++x ) { + for (int y = 0, n = (x << LEAF_LOG2DIM); y < LEAF_DIM; ++y, ++n) { + if (const Word w = oldMask.template getWord(n)) { + { + cache.mask = Word(w | (w>>1) | (w<<1)); + cache.setOrigin(cache[0]->origin()); + cache.scatter(0, n); + cache.scatterFacesXY(x, y, 0, n, 3); + cache.mask = w; + cache.scatterEdgesXY(x, y, 0, n, 3); + } + if ( (cache.mask = Word(w<<(LEAF_DIM-1))) ) { + cache.setOrigin(cache[0]->origin()); + cache.template scatter< 0, 0,-1>(1, n); + cache.setOrigin(orig_mz); + cache.scatterFacesXY(x, y, 1, n, 11); + } + if ( (cache.mask = Word(w>>(LEAF_DIM-1))) ) { + cache.setOrigin(cache[0]->origin()); + cache.template scatter< 0, 0, 1>(2, n); + cache.setOrigin(orig_pz); + cache.scatterFacesXY(x, y, 2, n, 15); + } + } + }// loop over y + }//loop over x + cache.clear(); + }//loop over leafs + + mManager->rebuildLeafArray(); +}// dilateVoxels18 + + +template +inline void +Morphology::dilateVoxels26() +{ + const int leafCount = static_cast(mManager->leafCount()); + + // Save the value masks of all leaf nodes. + std::vector savedMasks(leafCount); + this->copyMasks(savedMasks, *mManager); + LeafCache cache(27, mManager->tree()); + Coord orig_mz, orig_pz;//origins of neighbor leaf nodes in the -z and +z directions + for (int leafIdx = 0; leafIdx < leafCount; ++leafIdx) { + const MaskType& oldMask = savedMasks[leafIdx];//original bit-mask of current leaf node + cache[0] = &mManager->leaf(leafIdx); + orig_mz = cache[0]->origin().offsetBy(0, 0, -LEAF_DIM); + orig_pz = cache[0]->origin().offsetBy(0, 0, LEAF_DIM); + for (int x = 0; x < LEAF_DIM; ++x ) { + for (int y = 0, n = (x << LEAF_LOG2DIM); y < LEAF_DIM; ++y, ++n) { + if (const Word w = oldMask.template getWord(n)) { + { + cache.mask = Word(w | (w>>1) | (w<<1)); + cache.setOrigin(cache[0]->origin()); + cache.scatter(0, n); + cache.scatterFacesXY(x, y, 0, n, 3); + cache.scatterEdgesXY(x, y, 0, n, 3); + } + if ( (cache.mask = Word(w<<(LEAF_DIM-1))) ) { + cache.setOrigin(cache[0]->origin()); + cache.template scatter< 0, 0,-1>(1, n); + cache.setOrigin(orig_mz); + cache.scatterFacesXY(x, y, 1, n, 11); + cache.scatterEdgesXY(x, y, 1, n, 11); + } + if ( (cache.mask = Word(w>>(LEAF_DIM-1))) ) { + cache.setOrigin(cache[0]->origin()); + cache.template scatter< 0, 0, 1>(2, n); + cache.setOrigin(orig_pz); + cache.scatterFacesXY(x, y, 2, n, 19); + cache.scatterEdgesXY(x, y, 2, n, 19); + } + } + }// loop over y + }//loop over x + cache.clear(); + }//loop over leafs + + mManager->rebuildLeafArray(); +}// dilateVoxels26 + + +template +inline void +Morphology::LeafCache::scatterFacesXY(int x, int y, int i1, int n, int i2) +{ + // dilate current leaf or neighbor in the -x direction + if (x > 0) { + this->scatter(i1, n-LEAF_DIM); + } else { + this->template scatter<-1, 0, 0>(i2, n); + } + // dilate current leaf or neighbor in the +x direction + if (x < LEAF_DIM-1) { + this->scatter(i1, n+LEAF_DIM); + } else { + this->template scatter< 1, 0, 0>(i2+1, n); + } + // dilate current leaf or neighbor in the -y direction + if (y > 0) { + this->scatter(i1, n-1); + } else { + this->template scatter< 0,-1, 0>(i2+2, n); + } + // dilate current leaf or neighbor in the +y direction + if (y < LEAF_DIM-1) { + this->scatter(i1, n+1); + } else { + this->template scatter< 0, 1, 0>(i2+3, n); + } +} + + +template +inline void +Morphology::LeafCache::scatterEdgesXY(int x, int y, int i1, int n, int i2) +{ + if (x > 0) { + if (y > 0) { + this->scatter(i1, n-LEAF_DIM-1); + } else { + this->template scatter< 0,-1, 0>(i2+2, n-LEAF_DIM); + } + if (y < LEAF_DIM-1) { + this->scatter(i1, n-LEAF_DIM+1); + } else { + this->template scatter< 0, 1, 0>(i2+3, n-LEAF_DIM); + } + } else { + if (y < LEAF_DIM-1) { + this->template scatter<-1, 0, 0>(i2 , n+1); + } else { + this->template scatter<-1, 1, 0>(i2+7, n ); + } + if (y > 0) { + this->template scatter<-1, 0, 0>(i2 , n-1); + } else { + this->template scatter<-1,-1, 0>(i2+4, n ); + } + } + if (x < LEAF_DIM-1) { + if (y > 0) { + this->scatter(i1, n+LEAF_DIM-1); + } else { + this->template scatter< 0,-1, 0>(i2+2, n+LEAF_DIM); + } + if (y < LEAF_DIM-1) { + this->scatter(i1, n+LEAF_DIM+1); + } else { + this->template scatter< 0, 1, 0>(i2+3, n+LEAF_DIM); + } + } else { + if (y > 0) { + this->template scatter< 1, 0, 0>(i2+1, n-1); + } else { + this->template scatter< 1,-1, 0>(i2+6, n ); + } + if (y < LEAF_DIM-1) { + this->template scatter< 1, 0, 0>(i2+1, n+1); + } else { + this->template scatter< 1, 1, 0>(i2+5, n ); + } + } +} + + +template +inline void +Morphology::ErodeVoxelsOp::runParallel(NearestNeighbors nn) +{ + namespace ph = std::placeholders; + switch (nn) { + case NN_FACE_EDGE: + mTask = std::bind(&ErodeVoxelsOp::erode18, ph::_1, ph::_2); + break; + case NN_FACE_EDGE_VERTEX: + mTask = std::bind(&ErodeVoxelsOp::erode26, ph::_1, ph::_2); + break; + case NN_FACE: + default: + mTask = std::bind(&ErodeVoxelsOp::erode6, ph::_1, ph::_2); + } + tbb::parallel_for(mManager.getRange(), *this); +} + + +template +inline typename Morphology::Word +Morphology::LeafCache::gatherFacesXY(int x, int y, int i1, int n, int i2) +{ + // erode current leaf or neighbor in negative x-direction + Word w = x>0 ? this->gather(i1,n-LEAF_DIM) : this->template gather<-1,0,0>(i2, n); + + // erode current leaf or neighbor in positive x-direction + w = Word(w & (xgather(i1,n+LEAF_DIM):this->template gather<1,0,0>(i2+1,n))); + + // erode current leaf or neighbor in negative y-direction + w = Word(w & (y>0 ? this->gather(i1, n-1) : this->template gather<0,-1,0>(i2+2, n))); + + // erode current leaf or neighbor in positive y-direction + w = Word(w & (ygather(i1, n+1) : this->template gather<0,1,0>(i2+3, n))); + + return w; +} + + +template +inline typename Morphology::Word +Morphology::LeafCache::gatherEdgesXY(int x, int y, int i1, int n, int i2) +{ + Word w = ~Word(0); + + if (x > 0) { + w &= y > 0 ? this->gather(i1, n-LEAF_DIM-1) : + this->template gather< 0,-1, 0>(i2+2, n-LEAF_DIM); + w &= y < LEAF_DIM-1 ? this->gather(i1, n-LEAF_DIM+1) : + this->template gather< 0, 1, 0>(i2+3, n-LEAF_DIM); + } else { + w &= y < LEAF_DIM-1 ? this->template gather<-1, 0, 0>(i2 , n+1): + this->template gather<-1, 1, 0>(i2+7, n ); + w &= y > 0 ? this->template gather<-1, 0, 0>(i2 , n-1): + this->template gather<-1,-1, 0>(i2+4, n ); + } + if (x < LEAF_DIM-1) { + w &= y > 0 ? this->gather(i1, n+LEAF_DIM-1) : + this->template gather< 0,-1, 0>(i2+2, n+LEAF_DIM); + w &= y < LEAF_DIM-1 ? this->gather(i1, n+LEAF_DIM+1) : + this->template gather< 0, 1, 0>(i2+3, n+LEAF_DIM); + } else { + w &= y > 0 ? this->template gather< 1, 0, 0>(i2+1, n-1): + this->template gather< 1,-1, 0>(i2+6, n ); + w &= y < LEAF_DIM-1 ? this->template gather< 1, 0, 0>(i2+1, n+1): + this->template gather< 1, 1, 0>(i2+5, n ); + } + + return w; +} + + +template +inline void +Morphology::ErodeVoxelsOp::erode6(const RangeT& range) const +{ + LeafCache cache(7, mManager.tree()); + for (size_t leafIdx = range.begin(); leafIdx < range.end(); ++leafIdx) { + cache[0] = &mManager.leaf(leafIdx); + if (cache[0]->isEmpty()) continue; + cache.setOrigin(cache[0]->origin()); + MaskType& newMask = mSavedMasks[leafIdx];//original bit-mask of current leaf node + for (int x = 0; x < LEAF_DIM; ++x ) { + for (int y = 0, n = (x << LEAF_LOG2DIM); y < LEAF_DIM; ++y, ++n) { + // Extract the portion of the original mask that corresponds to a row in z. + if (Word& w = newMask.template getWord(n)) { + + // erode in two z directions (this is first since it uses the original w) + w = Word(w & + (Word(w<<1 | (cache.template gather<0,0,-1>(1, n)>>(LEAF_DIM-1))) & + Word(w>>1 | (cache.template gather<0,0, 1>(2, n)<<(LEAF_DIM-1))))); + + w = Word(w & cache.gatherFacesXY(x, y, 0, n, 3)); + } + }// loop over y + }//loop over x + cache.clear(); + }//loop over leafs +} + + +template +inline void +Morphology::ErodeVoxelsOp::erode18(const RangeT&) const +{ + OPENVDB_THROW(NotImplementedError, "tools::erode18 is not implemented yet!"); +} + + +template +inline void +Morphology::ErodeVoxelsOp::erode26(const RangeT&) const +{ + OPENVDB_THROW(NotImplementedError, "tools::erode26 is not implemented yet!"); +} + + +template +inline void +Morphology::doErosion(NearestNeighbors nn) +{ + /// @todo Currently operates only on leaf voxels; need to extend to tiles. + const size_t leafCount = mManager->leafCount(); + + // Save the value masks of all leaf nodes. + std::vector savedMasks(leafCount); + this->copyMasks(savedMasks, *mManager); + UpdateMasks a(savedMasks, *mManager); + ErodeVoxelsOp erode(savedMasks, *mManager); + + for (int i = 0; i < mSteps; ++i) { + erode.runParallel(nn); + a.update(); + } + + tools::pruneLevelSet(mManager->tree()); +} + + +//////////////////////////////////////// + + +template +OPENVDB_STATIC_SPECIALIZATION inline void +dilateVoxels(tree::LeafManager& manager, int iterations, NearestNeighbors nn) +{ + if (iterations > 0 ) { + Morphology m(&manager); + m.dilateVoxels(iterations, nn); + } +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +dilateVoxels(TreeType& tree, int iterations, NearestNeighbors nn) +{ + if (iterations > 0 ) { + Morphology m(tree); + m.dilateVoxels(iterations, nn); + } +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +erodeVoxels(tree::LeafManager& manager, int iterations, NearestNeighbors nn) +{ + if (iterations > 0 ) { + Morphology m(&manager); + m.erodeVoxels(iterations, nn); + } +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +erodeVoxels(TreeType& tree, int iterations, NearestNeighbors nn) +{ + if (iterations > 0 ) { + Morphology m(tree); + m.erodeVoxels(iterations, nn); + } +} + + +//////////////////////////////////////// + + +namespace activation { + +template +class ActivationOp +{ +public: + using ValueT = typename TreeType::ValueType; + + ActivationOp(bool state, const ValueT& val, const ValueT& tol) + : mActivate(state) + , mValue(val) + , mTolerance(tol) + {} + + void operator()(const typename TreeType::ValueOnIter& it) const + { + if (math::isApproxEqual(*it, mValue, mTolerance)) { + it.setValueOff(); + } + } + + void operator()(const typename TreeType::ValueOffIter& it) const + { + if (math::isApproxEqual(*it, mValue, mTolerance)) { + it.setActiveState(/*on=*/true); + } + } + + void operator()(const typename TreeType::LeafIter& lit) const + { + using LeafT = typename TreeType::LeafNodeType; + LeafT& leaf = *lit; + if (mActivate) { + for (typename LeafT::ValueOffIter it = leaf.beginValueOff(); it; ++it) { + if (math::isApproxEqual(*it, mValue, mTolerance)) { + leaf.setValueOn(it.pos()); + } + } + } else { + for (typename LeafT::ValueOnIter it = leaf.beginValueOn(); it; ++it) { + if (math::isApproxEqual(*it, mValue, mTolerance)) { + leaf.setValueOff(it.pos()); + } + } + } + } + +private: + bool mActivate; + const ValueT mValue, mTolerance; +}; // class ActivationOp + +} // namespace activation + + +template +inline void +activate(GridOrTree& gridOrTree, const typename GridOrTree::ValueType& value, + const typename GridOrTree::ValueType& tolerance) +{ + using Adapter = TreeAdapter; + using TreeType = typename Adapter::TreeType; + + TreeType& tree = Adapter::tree(gridOrTree); + + activation::ActivationOp op(/*activate=*/true, value, tolerance); + + // Process all leaf nodes in parallel. + foreach(tree.beginLeaf(), op); + + // Process all other inactive values serially (because changing active states + // is not thread-safe unless no two threads modify the same node). + typename TreeType::ValueOffIter it = tree.beginValueOff(); + it.setMaxDepth(tree.treeDepth() - 2); + foreach(it, op, /*threaded=*/false); +} + + +template +inline void +deactivate(GridOrTree& gridOrTree, const typename GridOrTree::ValueType& value, + const typename GridOrTree::ValueType& tolerance) +{ + using Adapter = TreeAdapter; + using TreeType = typename Adapter::TreeType; + + TreeType& tree = Adapter::tree(gridOrTree); + + activation::ActivationOp op(/*activate=*/false, value, tolerance); + + // Process all leaf nodes in parallel. + foreach(tree.beginLeaf(), op); + + // Process all other active values serially (because changing active states + // is not thread-safe unless no two threads modify the same node). + typename TreeType::ValueOnIter it = tree.beginValueOn(); + it.setMaxDepth(tree.treeDepth() - 2); + foreach(it, op, /*threaded=*/false); +} + +/// @brief Class that performs multi-threaded dilation with support for active tiles. +/// @warning Dont use this class directly, instead call the function dilateActiveValues! +template +class DilationOp +{ + using MaskT = typename TreeT::template ValueConverter::Type; + using PoolT = tbb::enumerable_thread_specific; + using LeafT = typename MaskT::LeafNodeType; + + // Very light-weight member data + const int mIter;// number of iterations + const tools::NearestNeighbors mNN;//enum to specify the dilation scheme + PoolT *mPool;// pointer to the thread-local pool of mask trees + LeafT **mLeafs;// raw array of pointers to leaf nodes + +public: + + DilationOp(TreeT &tree, int iterations, NearestNeighbors nn, TilePolicy mode) + : mIter(iterations), mNN(nn), mPool(nullptr), mLeafs(nullptr) + { + const size_t numLeafs = this->init( tree, mode ); + const size_t numThreads = size_t(tbb::task_scheduler_init::default_num_threads()); + const size_t grainSize = math::Max(size_t(1), numLeafs/(2*numThreads)); + + MaskT mask; + PoolT pool(mask);// Scoped thread-local storage of mask trees + mPool = &pool; + + tbb::parallel_for(tbb::blocked_range(mLeafs, mLeafs+numLeafs, grainSize), *this); + + delete [] mLeafs;// no more need for the array of leaf node pointers + + using IterT = typename PoolT::iterator; + for (IterT it=pool.begin(); it!=pool.end(); ++it) mask.merge(*it);// fast stealing + + if (mode == PRESERVE_TILES) tools::prune(mask);//multithreaded + + tree.topologyUnion(mask);//multithreaded + } + + // This is required by tbb and should never be called directly + void operator()(const tbb::blocked_range &r) const + { + MaskT mask;// thread-local temporary mask tree + for (LeafT** it=r.begin(); it!=r.end(); ++it) mask.addLeaf( *it ); + tree::LeafManager manager(mask, r.begin(), r.end()); + tools::dilateVoxels(manager, mIter, mNN);// serial dilation of active voxels + mPool->local().merge(mask, MERGE_ACTIVE_STATES); + } +private: + + // Simple wrapper of a raw double-pointer to mimic a std container + struct MyArray { + using value_type = LeafT*;//required by Tree::stealNodes + value_type* ptr; + MyArray(value_type* array) : ptr(array) {} + void push_back(value_type leaf) { *ptr++ = leaf; }//required by Tree::stealNodes + }; + + // Convert active tiles to leafs and de-construct the tree into a linear array of leafs. + size_t linearize(MaskT& mask, TilePolicy mode) + { + if (mode != IGNORE_TILES) mask.voxelizeActiveTiles();//lightweight since this is a mask tree + const size_t numLeafs = mask.leafCount(); + mLeafs = new LeafT*[numLeafs];// fast pre-allocation + MyArray tmp(mLeafs); + mask.stealNodes(tmp);// serializes the mask tree and leaves it empty + return numLeafs; + } + + template + typename std::enable_if::value, size_t>::type + init(T& tree, TilePolicy mode) + { + return this->linearize(tree, mode); + } + + template + typename std::enable_if::value, size_t>::type + init(const T& tree, TilePolicy mode) + { + MaskT mask(tree, false, true, TopologyCopy()); + return this->linearize(mask, mode); + } + +};// DilationOp + +template +OPENVDB_STATIC_SPECIALIZATION inline void +dilateActiveValues(TreeType& tree, int iterations, NearestNeighbors nn, TilePolicy mode) +{ + if (iterations > 0 ) DilationOp tmp(tree, iterations, nn, mode); +} + +template +OPENVDB_STATIC_SPECIALIZATION inline void +dilateActiveValues(tree::LeafManager& manager, + int iterations, + NearestNeighbors nn, + TilePolicy mode) +{ + if (iterations > 0 ) { + DilationOp tmp(manager.tree(), iterations, nn, mode); + manager.rebuildLeafArray(); + } +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_MORPHOLOGY_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/MultiResGrid.h b/openvdb/tools/MultiResGrid.h new file mode 100644 index 00000000..284b07f1 --- /dev/null +++ b/openvdb/tools/MultiResGrid.h @@ -0,0 +1,951 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file MultiResGrid.h +/// +/// @author Ken Museth +/// +/// @warning This class is fairly new and as such has not seen a lot of +/// use in production. Please report any issues or request for new +/// features directly to ken.museth@dreamworks.com. +/// +/// @brief Multi-resolution grid that contains LoD sequences of trees +/// with powers of two refinements. +/// +/// @note While this class can arguably be used to implement a sparse +/// Multi-Grid solver it is currently intended as a means to +/// efficiently compute LoD levels for applications like rendering +/// +/// @note Prolongation means interpolation from coarse -> fine +/// @note Restriction means interpolation (or remapping) from fine -> coarse +/// +/// @todo Add option to define the level of the input grid (currenlty +/// 0) so as to allow for super-sampling. + +#ifndef OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include "Interpolation.h" +#include "Morphology.h" +#include "Prune.h" +#include "SignedFloodFill.h" +#include "ValueTransformer.h" + +#include +#include +#include + +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +template +class MultiResGrid: public MetaMap +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using ValueType = typename TreeType::ValueType; + using ValueOnCIter = typename TreeType::ValueOnCIter; + using ValueOnIter = typename TreeType::ValueOnIter; + using TreePtr = typename TreeType::Ptr; + using ConstTreePtr = typename TreeType::ConstPtr; + using GridPtr = typename Grid::Ptr; + using ConstGridPtr = typename Grid::ConstPtr; + + ////////////////////////////////////////////////////////////////////// + + /// @brief Constructor of empty grids + /// @param levels The number of trees in this MultiResGrid + /// @param background Background value + /// @param voxelSize Size of a (uniform voxel). Defaults to one. + /// @note The multiple grids are all empty. + MultiResGrid(size_t levels, ValueType background, double voxelSize = 1.0); + + /// @brief Given an initial high-resolution grid this constructor + /// generates all the coarser grids by means of restriction. + /// @param levels The number of trees in this MultiResGrid + /// @param grid High-resolution input grid + /// @param useInjection Use restriction by injection, vs + /// full-weighting. It defaults to false and should rarely be used. + /// @note This constructor will perform a deep copy of the input + /// grid and use it as the highest level grid. + MultiResGrid(size_t levels, const Grid &grid, bool useInjection = false); + + /// @brief Given an initial high-resolution grid this constructor + /// generates all the coarser grids by means of restriction. + /// @param levels The number of trees in this MultiResGrid + /// @param grid High-resolution input grid + /// @param useInjection Use restriction by injection, vs + /// full-weighting. It defaults to false and should rarely be used. + /// @note This constructor will steal the input grid and use it + /// as the highest level grid. On output the grid is empty. + MultiResGrid(size_t levels, GridPtr grid, bool useInjection = false); + + ////////////////////////////////////////////////////////////////////// + + /// @brief Return the number of levels, i.e. trees, in this MultiResGrid + /// @note level 0 is the finest level and numLevels()-1 is the coarsest + /// level. + size_t numLevels() const { return mTrees.size(); } + + /// @brief Return the level of the finest grid (always 0) + static size_t finestLevel() { return 0; } + + /// @brief Return the level of the coarsest grid, i.e. numLevels()-1 + size_t coarsestLevel() const { return mTrees.size()-1; } + + ////////////////////////////////////////////////////////////////////// + + /// @brief Return a reference to the tree at the specified level + /// @param level The level of the tree to be returned + /// @note Level 0 is by definition the finest tree. + TreeType& tree(size_t level); + + /// @brief Return a const reference to the tree at the specified level + /// @param level The level of the tree to be returned + /// @note Level 0 is by definition the finest tree. + const TreeType& constTree(size_t level) const; + + /// @brief Return a shared pointer to the tree at the specified level + /// @param level The level of the tree to be returned + /// @note Level 0 is by definition the finest tree. + TreePtr treePtr(size_t level); + + /// @brief Return a const shared pointer to the tree at the specified level + /// @param level The level of the tree to be returned + /// @note Level 0 is by definition the finest tree. + ConstTreePtr constTreePtr(size_t level) const; + + /// @brief Return a reference to the tree at the finest level + TreeType& finestTree() { return *mTrees.front(); } + + /// @brief Return a const reference to the tree at the finest level + const TreeType& finestConstTree() const { return *mTrees.front(); } + + /// @brief Return a shared pointer to the tree at the finest level + TreePtr finestTreePtr() { return mTrees.front(); } + + /// @brief Return a const shared pointer to the tree at the finest level + ConstTreePtr finestConstTreePtr() const { return mTrees.front(); } + + /// @brief Return a reference to the tree at the coarsest level + TreeType& coarsestTree() { return *mTrees.back(); } + + /// @brief Return a const reference to the tree at the coarsest level + const TreeType& coarsestConstTree() const { return *mTrees.back(); } + + /// @brief Return a shared pointer to the tree at the coarsest level + TreePtr coarsestTreePtr() { return mTrees.back(); } + + /// @brief Return a const shared pointer to the tree at the coarsest level + ConstTreePtr coarsestConstTreePtr() const { return mTrees.back(); } + + ////////////////////////////////////////////////////////////////////// + + /// @brief Return a shared pointer to the grid at the specified integer level + /// @param level Integer level of the grid to be returned + /// @note Level 0 is by definition the finest grid. + GridPtr grid(size_t level); + + /// @brief Return a const shared pointer to the grid at the specified level + /// @param level The level of the grid to be returned + /// @note Level 0 is by definition the finest grid. + ConstGridPtr grid(size_t level) const; + + /// @brief Return a shared pointer to a new grid at the specified + /// floating-point level. + /// @param level Floating-point level of the grid to be returned + /// @param grainSize Grain size for the multi-threading + /// @details Interpolation of the specified order is performed + /// between the bracketing integer levels. + /// @note Level 0 is by definition the finest grid. + template + GridPtr createGrid(float level, size_t grainSize = 1) const; + + /// @brief Return a shared pointer to a vector of all the base + /// grids in this instance of the MultiResGrid. + /// @brief This method is useful for I/O + GridPtrVecPtr grids(); + + /// @brief Return a const shared pointer to a vector of all the base + /// grids in this instance of the MultiResGrid. + /// @brief This method is useful for I/O + GridCPtrVecPtr grids() const; + + ////////////////////////////////////////////////////////////////////// + + //@{ + /// @brief Return a reference to the finest grid's transform, which might be + /// shared with other grids. + /// @note Calling setTransform() on this grid invalidates all references + /// previously returned by this method. + /// @warning The transform is relative to the finest level (=0) grid! + math::Transform& transform() { return *mTransform; } + const math::Transform& transform() const { return *mTransform; } + const math::Transform& constTransform() const { return *mTransform; } + //@} + + ////////////////////////////////////////////////////////////////////// + + //@{ + /// @brief Return the floating-point index coordinate at out_level given + /// the index coordinate in_xyz at in_level. + static Vec3R xyz(const Coord& in_ijk, size_t in_level, size_t out_level); + static Vec3R xyz(const Vec3R& in_xyz, size_t in_level, size_t out_level); + static Vec3R xyz(const Vec3R& in_xyz, double in_level, double out_level); + //@} + + ////////////////////////////////////////////////////////////////////// + + + + //@{ + /// @brief Return the value at the specified coordinate position using + /// interpolation of the specified order into the tree at the out_level. + /// + /// @details First in_ijk is mapped from index space at in_level to + /// out_level, and then a value is interpolated from the tree at out_level. + /// + /// @param in_ijk Index coordinate position relative to tree at in_level + /// @param in_level Integer level of the input coordinate in_ijk + /// @param out_level Integer level of the interpolated value + template + ValueType sampleValue(const Coord& in_ijk, size_t in_level, size_t out_level) const; + template + ValueType sampleValue(const Vec3R& in_ijk, size_t in_level, size_t out_level) const; + //@} + + /// @brief Return the value at the specified integer coordinate position + /// and level using interpolation of the specified order. + /// @param ijk Integer coordinate position relative to the highest level (=0) grid + /// @param level Floating-point level from which to interpolate the value. + /// @brief Non-integer values of the level will use linear-interpolation + /// between the neighboring integer levels. + template + ValueType sampleValue(const Coord& ijk, double level) const; + + /// @brief Return the value at the specified floating-point coordinate position + /// and level using interpolation of the specified order. + /// @param xyz Floating-point coordinate position relative to the highest level grid + /// @param level Floating-point level from which to interpolate + /// the value. + /// @brief Non-integer values of the level will use linear-interpolation + /// between the neighboring integer levels. + template + ValueType sampleValue(const Vec3R& xyz, double level) const; + + ////////////////////////////////////////////////////////////////////// + + /// @brief Return the value at coordinate location in @a level tree + /// from the coarser tree at @a level+1 using trilinear interpolation + /// @param coords input coords relative to the fine tree at level + /// @param level The fine level to receive values from the coarser + /// level-1 + /// @note Prolongation means to interpolation from coarse -> fine + ValueType prolongateVoxel(const Coord& coords, const size_t level) const; + + + /// (coarse->fine) Populates all the active voxel values in a fine (@a level) tree + /// from the coarse (@a level+1) tree using linear interpolation + /// This transforms multiple values of the tree in parallel + void prolongateActiveVoxels(size_t destlevel, size_t grainSize = 1); + + ////////////////////////////////////////////////////////////////////// + + /// Populate a coordinate location in @a level (coarse) tree + /// from the @a level-1 (fine) tree using trilinear interpolation + /// input coords are relative to the mTree[level] (coarse) + /// @note Restriction means remapping from fine -> coarse + ValueType restrictVoxel(Coord ijk, const size_t level, bool useInjection = false) const; + + /// (fine->coarse) Populates all the active voxel values in the coarse (@a level) tree + /// from the fine (@a level-1) tree using trilinear interpolation. + /// For cell-centered data, this is equivalent to an average + /// For vertex-centered data this is equivalent to transferring the data + /// from the fine vertex directly above the coarse vertex. + /// This transforms multiple values of the tree in parallel + void restrictActiveVoxels(size_t destlevel, size_t grainSize = 1); + + /// Output a human-readable description of this MultiResGrid + void print(std::ostream& = std::cout, int verboseLevel = 1) const; + + /// @brief Return a string with the name of this MultiResGrid + std::string getName() const + { + if (Metadata::ConstPtr meta = (*this)[GridBase::META_GRID_NAME]) return meta->str(); + return ""; + } + + /// @brief Set the name of this MultiResGrid + void setName(const std::string& name) + { + this->removeMeta(GridBase::META_GRID_NAME); + this->insertMeta(GridBase::META_GRID_NAME, StringMetadata(name)); + } + + /// Return the class of volumetric data (level set, fog volume, etc.) stored in this grid. + GridClass getGridClass() const + { + typename StringMetadata::ConstPtr s = + this->getMetadata(GridBase::META_GRID_CLASS); + return s ? GridBase::stringToGridClass(s->value()) : GRID_UNKNOWN; + } + + /// Specify the class of volumetric data (level set, fog volume, etc.) stored in this grid. + void setGridClass(GridClass cls) + { + this->insertMeta(GridBase::META_GRID_CLASS, StringMetadata(GridBase::gridClassToString(cls))); + } + + /// Remove the setting specifying the class of this grid's volumetric data. + void clearGridClass() { this->removeMeta(GridBase::META_GRID_CLASS); } + +private: + + MultiResGrid(const MultiResGrid& other);//disallow copy construction + MultiResGrid& operator=(const MultiResGrid& other);//disallow copy assignment + + // For optimal performance we disable registration of the ValueAccessor + using Accessor = tree::ValueAccessor; + using ConstAccessor = tree::ValueAccessor; + + void topDownRestrict(bool useInjection); + + inline void initMeta(); + + // Private struct that concurrently creates a mask of active voxel + // in a coarse tree from the active voxels in a fine tree + struct MaskOp; + + /// Private struct that performs multi-threaded restriction + struct RestrictOp; + + /// Private struct that performs multi-threaded prolongation + struct ProlongateOp; + + // Private struct that performs multi-threaded computation of grids a fraction levels + template + struct FractionOp; + + /// Private template struct that performs the actual multi-threading + template struct CookOp; + + // Array of shared pointer to trees, level 0 has the highest resolution. + std::vector mTrees; + // Shared pointer to a transform associated with the finest level grid + typename math::Transform::Ptr mTransform; +};// MultiResGrid + +template +MultiResGrid:: +MultiResGrid(size_t levels, ValueType background, double voxelSize) + : mTrees(levels) + , mTransform(math::Transform::createLinearTransform( voxelSize )) +{ + this->initMeta(); + for (size_t i=0; i +MultiResGrid:: +MultiResGrid(size_t levels, const Grid &grid, bool useInjection) + : MetaMap(grid) + , mTrees(levels) + , mTransform( grid.transform().copy() ) +{ + this->initMeta(); + mTrees[0].reset( new TreeType( grid.tree() ) );// deep copy input tree + mTrees[0]->voxelizeActiveTiles(); + this->topDownRestrict(useInjection); +} + +template +MultiResGrid:: +MultiResGrid(size_t levels, GridPtr grid, bool useInjection) + : MetaMap(*grid) + , mTrees(levels) + , mTransform( grid->transform().copy() ) +{ + this->initMeta(); + mTrees[0] = grid->treePtr();// steal tree from input grid + mTrees[0]->voxelizeActiveTiles(); + grid->newTree(); + this->topDownRestrict(useInjection); +} + +template +inline TreeType& MultiResGrid:: +tree(size_t level) +{ + assert( level < mTrees.size() ); + return *mTrees[level]; +} + +template +inline const TreeType& MultiResGrid:: +constTree(size_t level) const +{ + assert( level < mTrees.size() ); + return *mTrees[level]; +} + +template +inline typename TreeType::Ptr MultiResGrid:: +treePtr(size_t level) +{ + assert( level < mTrees.size() ); + return mTrees[level]; +} + +template +inline typename TreeType::ConstPtr MultiResGrid:: +constTreePtr(size_t level) const +{ + assert( level < mTrees.size() ); + return mTrees[level]; +} + +template +typename Grid::Ptr MultiResGrid:: +grid(size_t level) +{ + typename Grid::Ptr grid = Grid::create(this->treePtr(level)); + math::Transform::Ptr xform = mTransform->copy(); + if (level>0) xform->preScale( Real(1 << level) ); + grid->setTransform( xform ); + grid->insertMeta( *this->copyMeta() ); + grid->insertMeta( "MultiResGrid_Level", Int64Metadata(level)); + std::stringstream ss; + ss << this->getName() << "_level_" << level; + grid->setName( ss.str() ); + return grid; +} + +template +inline typename Grid::ConstPtr MultiResGrid:: +grid(size_t level) const +{ + return const_cast(this)->grid(level); +} + +template +template +typename Grid::Ptr MultiResGrid:: +createGrid(float level, size_t grainSize) const +{ + assert( level >= 0.0f && level <= float(mTrees.size()-1) ); + + typename Grid::Ptr grid(new Grid(this->constTree(0).background())); + math::Transform::Ptr xform = mTransform->copy(); + xform->preScale( math::Pow(2.0f, level) ); + grid->setTransform( xform ); + grid->insertMeta( *(this->copyMeta()) ); + grid->insertMeta( "MultiResGrid_Level", FloatMetadata(level) ); + std::stringstream ss; + ss << this->getName() << "_level_" << level; + grid->setName( ss.str() ); + + if ( size_t(floorf(level)) == size_t(ceilf(level)) ) { + grid->setTree( this->constTree( size_t(floorf(level))).copy() ); + } else { + FractionOp tmp(*this, grid->tree(), level, grainSize); + if ( grid->getGridClass() == GRID_LEVEL_SET ) { + signedFloodFill( grid->tree() ); + pruneLevelSet( grid->tree() );//only creates inactive tiles + } + } + + return grid; +} + +template +GridPtrVecPtr MultiResGrid:: +grids() +{ + GridPtrVecPtr grids( new GridPtrVec ); + for (size_t level=0; levelpush_back(this->grid(level)); + return grids; +} + +template +GridCPtrVecPtr MultiResGrid:: +grids() const +{ + GridCPtrVecPtr grids( new GridCPtrVec ); + for (size_t level=0; levelpush_back(this->grid(level)); + return grids; +} + +template +Vec3R MultiResGrid:: +xyz(const Coord& in_ijk, size_t in_level, size_t out_level) +{ + return Vec3R( in_ijk.data() ) * Real(1 << in_level) / Real(1 << out_level); +} + +template +Vec3R MultiResGrid:: +xyz(const Vec3R& in_xyz, size_t in_level, size_t out_level) +{ + return in_xyz * Real(1 << in_level) / Real(1 << out_level); +} + +template +Vec3R MultiResGrid:: +xyz(const Vec3R& in_xyz, double in_level, double out_level) +{ + return in_xyz * math::Pow(2.0, in_level - out_level); + +} + +template +template +typename TreeType::ValueType MultiResGrid:: +sampleValue(const Coord& in_ijk, size_t in_level, size_t out_level) const +{ + assert( in_level >= 0 && in_level < mTrees.size() ); + assert( out_level >= 0 && out_level < mTrees.size() ); + const ConstAccessor acc(*mTrees[out_level]);// has disabled registration! + return tools::Sampler::sample( acc, this->xyz(in_ijk, in_level, out_level) ); +} + +template +template +typename TreeType::ValueType MultiResGrid:: +sampleValue(const Vec3R& in_xyz, size_t in_level, size_t out_level) const +{ + assert( in_level >= 0 && in_level < mTrees.size() ); + assert( out_level >= 0 && out_level < mTrees.size() ); + const ConstAccessor acc(*mTrees[out_level]);// has disabled registration! + return tools::Sampler::sample( acc, this->xyz(in_xyz, in_level, out_level) ); +} + +template +template +typename TreeType::ValueType MultiResGrid:: +sampleValue(const Coord& ijk, double level) const +{ + assert( level >= 0.0 && level <= double(mTrees.size()-1) ); + const size_t level0 = size_t(floor(level)), level1 = size_t(ceil(level)); + const ValueType v0 = this->template sampleValue( ijk, 0, level0 ); + if ( level0 == level1 ) return v0; + assert( level1 - level0 == 1 ); + const ValueType v1 = this->template sampleValue( ijk, 0, level1 ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueType a = ValueType(level1 - level); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return a * v0 + (ValueType(1) - a) * v1; +} + +template +template +typename TreeType::ValueType MultiResGrid:: +sampleValue(const Vec3R& xyz, double level) const +{ + assert( level >= 0.0 && level <= double(mTrees.size()-1) ); + const size_t level0 = size_t(floor(level)), level1 = size_t(ceil(level)); + const ValueType v0 = this->template sampleValue( xyz, 0, level0 ); + if ( level0 == level1 ) return v0; + assert( level1 - level0 == 1 ); + const ValueType v1 = this->template sampleValue( xyz, 0, level1 ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const ValueType a = ValueType(level1 - level); + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + return a * v0 + (ValueType(1) - a) * v1; +} + +template +typename TreeType::ValueType MultiResGrid:: +prolongateVoxel(const Coord& ijk, const size_t level) const +{ + assert( level+1 < mTrees.size() ); + const ConstAccessor acc(*mTrees[level + 1]);// has disabled registration! + return ProlongateOp::run(ijk, acc); +} + +template +void MultiResGrid:: +prolongateActiveVoxels(size_t destlevel, size_t grainSize) +{ + assert( destlevel < mTrees.size()-1 ); + TreeType &fineTree = *mTrees[ destlevel ]; + const TreeType &coarseTree = *mTrees[ destlevel+1 ]; + CookOp tmp( coarseTree, fineTree, grainSize ); +} + +template +typename TreeType::ValueType MultiResGrid:: +restrictVoxel(Coord ijk, const size_t destlevel, bool useInjection) const +{ + assert( destlevel > 0 && destlevel < mTrees.size() ); + const TreeType &fineTree = *mTrees[ destlevel-1 ]; + if ( useInjection ) return fineTree.getValue(ijk<<1); + const ConstAccessor acc( fineTree );// has disabled registration! + return RestrictOp::run( ijk, acc); +} + +template +void MultiResGrid:: +restrictActiveVoxels(size_t destlevel, size_t grainSize) +{ + assert( destlevel > 0 && destlevel < mTrees.size() ); + const TreeType &fineTree = *mTrees[ destlevel-1 ]; + TreeType &coarseTree = *mTrees[ destlevel ]; + CookOp tmp( fineTree, coarseTree, grainSize ); +} + +template +void MultiResGrid:: +print(std::ostream& os, int verboseLevel) const +{ + os << "MultiResGrid with " << mTrees.size() << " levels\n"; + for (size_t i=0; iprint(os, verboseLevel); + } + + if ( MetaMap::metaCount() > 0) { + os << "Additional metadata:" << std::endl; + for (ConstMetaIterator it = beginMeta(), end = endMeta(); it != end; ++it) { + os << " " << it->first; + if (it->second) { + const std::string value = it->second->str(); + if (!value.empty()) os << ": " << value; + } + os << "\n"; + } + } + + os << "Transform:" << std::endl; + transform().print(os, /*indent=*/" "); + os << std::endl; +} + +template +void MultiResGrid:: +initMeta() +{ + const size_t levels = this->numLevels(); + if (levels < 2) { + OPENVDB_THROW(ValueError, "MultiResGrid: at least two levels are required"); + } + this->insertMeta("MultiResGrid_Levels", Int64Metadata( levels ) ); +} + +template +void MultiResGrid:: +topDownRestrict(bool useInjection) +{ + const bool isLevelSet = this->getGridClass() == GRID_LEVEL_SET; + for (size_t n=1; n> 1, *it ); + } + } else {// Restriction by full-weighting + MaskOp tmp(fineTree, coarseTree, 128); + this->restrictActiveVoxels(n, 64); + } + if ( isLevelSet ) { + tools::signedFloodFill( coarseTree ); + tools::pruneLevelSet( coarseTree );//only creates inactive tiles + } + }// loop over grid levels +} + +template +struct MultiResGrid::MaskOp +{ + using MaskT = typename TreeType::template ValueConverter::Type; + using PoolType = tbb::enumerable_thread_specific; + using ManagerT = tree::LeafManager; + using RangeT = typename ManagerT::LeafRange; + using VoxelIterT = typename ManagerT::LeafNodeType::ValueOnCIter; + + MaskOp(const TreeType& fineTree, TreeType& coarseTree, size_t grainSize = 1) + : mPool(new PoolType( coarseTree ) )// empty coarse tree acts as examplar + { + assert( coarseTree.empty() ); + + // Create Mask of restruction performed on fineTree + MaskT mask(fineTree, false, true, TopologyCopy() ); + + // Muli-threaded dilation which also linearizes the tree to leaf nodes + tools::dilateActiveValues(mask, 1, NN_FACE_EDGE_VERTEX, EXPAND_TILES); + + // Restriction by injection using thread-local storage of coarse tree masks + ManagerT leafs( mask ); + tbb::parallel_for(leafs.leafRange( grainSize ), *this); + + // multithreaded union of thread-local coarse tree masks with the coarse tree + using IterT = typename PoolType::const_iterator; + for (IterT it=mPool->begin(); it!=mPool->end(); ++it) coarseTree.topologyUnion( *it ); + delete mPool; + } + void operator()(const RangeT& range) const + { + Accessor coarseAcc( mPool->local() );// disabled registration + for (typename RangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + Coord ijk = voxelIter.getCoord(); + if ( (ijk[2] & 1) || (ijk[1] & 1) || (ijk[0] & 1) ) continue;//no overlap + coarseAcc.setValueOn( ijk >> 1 );//injection from fine to coarse level + }//loop over active voxels in the fine tree + }// loop over leaf nodes in the fine tree + } + PoolType* mPool; +};// MaskOp + +template +template +struct MultiResGrid::FractionOp +{ + using MaskT = typename TreeType::template ValueConverter::Type; + using PoolType = tbb::enumerable_thread_specific; + using PoolIterT = typename PoolType::iterator; + using Manager1 = tree::LeafManager; + using Manager2 = tree::LeafManager; + using Range1 = typename Manager1::LeafRange; + using Range2 = typename Manager2::LeafRange; + + FractionOp(const MultiResGrid& parent, + TreeType& midTree, + float level, + size_t grainSize = 1) + : mLevel( level ) + , mPool(nullptr) + , mTree0( &*(parent.mTrees[size_t(floorf(level))]) )//high-resolution + , mTree1( &*(parent.mTrees[size_t(ceilf(level))]) ) //low-resolution + { + assert( midTree.empty() ); + assert( mTree0 != mTree1 ); + + // Create a pool of thread-local masks + MaskT examplar( false ); + mPool = new PoolType( examplar ); + + {// create mask from re-mapping coarse tree to mid-level tree + tree::LeafManager manager( *mTree1 ); + tbb::parallel_for( manager.leafRange(grainSize), *this ); + } + + // Multi-threaded dilation of mask + tbb::parallel_for(tbb::blocked_range(mPool->begin(),mPool->end(),1), *this); + + // Union thread-local coarse tree masks into the coarse tree + for (PoolIterT it=mPool->begin(); it!=mPool->end(); ++it) midTree.topologyUnion( *it ); + delete mPool; + + {// Interpolate values into the static mid level tree + Manager2 manager( midTree ); + tbb::parallel_for(manager.leafRange(grainSize), *this); + } + } + void operator()(const Range1& range) const + { + using VoxelIter = typename Manager1::LeafNodeType::ValueOnCIter; + // Let mLevel = level + frac, where + // level is integer part of mLevel and frac is the fractional part + // low-res voxel size in world units = dx1 = 2^(level + 1) + // mid-res voxel size in world units = dx = 2^(mLevel) = 2^(level + frac) + // low-res index -> world: ijk * dx1 + // world -> mid-res index: world / dx + // low-res index -> mid-res index: (ijk * dx1) / dx = ijk * scale where + // scale = dx1/dx = 2^(level+1)/2^(level+frac) = 2^(1-frac) + const float scale = math::Pow(2.0f, 1.0f - math::FractionalPart(mLevel)); + tree::ValueAccessor acc( mPool->local() );// disabled registration + for (typename Range1::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + for (VoxelIter voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) { + Coord ijk = voxelIter.getCoord(); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value0 = ijk[0] * scale; + const auto value1 = ijk[1] * scale; + const auto value2 = ijk[2] * scale; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + ijk[0] = int(math::Round(value0)); + ijk[1] = int(math::Round(value1)); + ijk[2] = int(math::Round(value2)); + + acc.setValueOn( ijk ); + }//loop over active voxels in the fine tree + }// loop over leaf nodes in the fine tree + } + void operator()(const tbb::blocked_range& range) const + { + for (PoolIterT it=range.begin(); it!=range.end(); ++it) { + tools::dilateVoxels( *it, 1, NN_FACE_EDGE_VERTEX); + } + } + void operator()(const Range2 &r) const + { + using VoxelIter = typename TreeType::LeafNodeType::ValueOnIter; + // Let mLevel = level + frac, where + // level is integer part of mLevel and frac is the fractional part + // high-res voxel size in world units = dx0 = 2^(level) + // low-res voxel size in world units = dx1 = 2^(level+1) + // mid-res voxel size in world units = dx = 2^(mLevel) = 2^(level + frac) + // mid-res index -> world: ijk * dx + // world -> high-res index: world / dx0 + // world -> low-res index: world / dx1 + // mid-res index -> high-res index: (ijk * dx) / dx0 = ijk * scale0 where + // scale0 = dx/dx0 = 2^(level+frac)/2^(level) = 2^(frac) + // mid-res index -> low-res index: (ijk * dx) / dx1 = ijk * scale1 where + // scale1 = dx/dx1 = 2^(level+frac)/2^(level+1) = 2^(frac-1) + const float b = math::FractionalPart(mLevel), a = 1.0f - b; + const float scale0 = math::Pow( 2.0f, b ); + const float scale1 = math::Pow( 2.0f,-a ); + ConstAccessor acc0( *mTree0 ), acc1( *mTree1 ); + for (typename Range2::Iterator leafIter = r.begin(); leafIter; ++leafIter) { + for (VoxelIter voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + const Vec3R xyz = Vec3R( voxelIter.getCoord().data() );// mid level coord + const ValueType v0 = tools::Sampler::sample( acc0, xyz * scale0 ); + const ValueType v1 = tools::Sampler::sample( acc1, xyz * scale1 ); + OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN + const auto value0 = a*v0; + const auto value1 = b*v1; + OPENVDB_NO_TYPE_CONVERSION_WARNING_END + voxelIter.setValue( ValueType(value0 + value1) ); + } + } + } + const float mLevel; + PoolType* mPool; + const TreeType *mTree0, *mTree1; +};// FractionOp + + +template +template +struct MultiResGrid::CookOp +{ + using ManagerT = tree::LeafManager; + using RangeT = typename ManagerT::LeafRange; + + CookOp(const TreeType& srcTree, TreeType& dstTree, size_t grainSize): acc(srcTree) + { + ManagerT leafs(dstTree); + tbb::parallel_for(leafs.leafRange(grainSize), *this); + } + CookOp(const CookOp &other): acc(other.acc.tree()) {} + + void operator()(const RangeT& range) const + { + for (auto leafIt = range.begin(); leafIt; ++leafIt) { + auto& phi = leafIt.buffer(0); + for (auto voxelIt = leafIt->beginValueOn(); voxelIt; ++voxelIt) { + phi.setValue(voxelIt.pos(), OperatorType::run(voxelIt.getCoord(), acc)); + } + } + } + + const ConstAccessor acc; +};// CookOp + + +template +struct MultiResGrid::RestrictOp +{ + /// @brief Static method that performs restriction by full weighting + /// @param ijk Coordinate location on the coarse tree + /// @param acc ValueAccessor to the fine tree + static ValueType run(Coord ijk, const ConstAccessor &acc) + { + ijk <<= 1; + // Overlapping grid point + ValueType v = 8*acc.getValue(ijk); + // neighbors in one axial direction + v += 4*(acc.getValue(ijk.offsetBy(-1, 0, 0)) + acc.getValue(ijk.offsetBy( 1, 0, 0)) +// x + acc.getValue(ijk.offsetBy( 0,-1, 0)) + acc.getValue(ijk.offsetBy( 0, 1, 0)) +// y + acc.getValue(ijk.offsetBy( 0, 0,-1)) + acc.getValue(ijk.offsetBy( 0, 0, 1)));// z + // neighbors in two axial directions + v += 2*(acc.getValue(ijk.offsetBy(-1,-1, 0)) + acc.getValue(ijk.offsetBy(-1, 1, 0)) +// xy + acc.getValue(ijk.offsetBy( 1,-1, 0)) + acc.getValue(ijk.offsetBy( 1, 1, 0)) +// xy + acc.getValue(ijk.offsetBy(-1, 0,-1)) + acc.getValue(ijk.offsetBy(-1, 0, 1)) +// xz + acc.getValue(ijk.offsetBy( 1, 0,-1)) + acc.getValue(ijk.offsetBy( 1, 0, 1)) +// xz + acc.getValue(ijk.offsetBy( 0,-1,-1)) + acc.getValue(ijk.offsetBy( 0,-1, 1)) +// yz + acc.getValue(ijk.offsetBy( 0, 1,-1)) + acc.getValue(ijk.offsetBy( 0, 1, 1)));// yz + // neighbors in three axial directions + for (int i=-1; i<=1; i+=2) { + for (int j=-1; j<=1; j+=2) { + for (int k=-1; k<=1; k+=2) v += acc.getValue(ijk.offsetBy(i,j,k));// xyz + } + } + v *= ValueType(1.0f/64.0f); + return v; + } +};// RestrictOp + +template +struct MultiResGrid::ProlongateOp +{ + /// @brief Interpolate values from a coarse grid (acc) into the index space (ijk) of a fine grid + /// @param ijk Coordinate location on the fine tree + /// @param acc ValueAccessor to the coarse tree + static ValueType run(const Coord& ijk, const ConstAccessor &acc) + { + switch ( (ijk[0] & 1) | ((ijk[1] & 1) << 1) | ((ijk[2] & 1) << 2) ) { + case 0:// all even + return acc.getValue(ijk>>1); + case 1:// x is odd + return ValueType(0.5)*(acc.getValue(ijk.offsetBy(-1,0,0)>>1) + + acc.getValue(ijk.offsetBy( 1,0,0)>>1)); + case 2:// y is odd + return ValueType(0.5)*(acc.getValue(ijk.offsetBy(0,-1,0)>>1) + + acc.getValue(ijk.offsetBy(0, 1,0)>>1)); + case 3:// x&y are odd + return ValueType(0.25)*(acc.getValue(ijk.offsetBy(-1,-1,0)>>1) + + acc.getValue(ijk.offsetBy(-1, 1,0)>>1) + + acc.getValue(ijk.offsetBy( 1,-1,0)>>1) + + acc.getValue(ijk.offsetBy( 1, 1,0)>>1)); + case 4:// z is odd + return ValueType(0.5)*(acc.getValue(ijk.offsetBy(0,0,-1)>>1) + + acc.getValue(ijk.offsetBy(0,0, 1)>>1)); + case 5:// x&z are odd + return ValueType(0.25)*(acc.getValue(ijk.offsetBy(-1,0,-1)>>1) + + acc.getValue(ijk.offsetBy(-1,0, 1)>>1) + + acc.getValue(ijk.offsetBy( 1,0,-1)>>1) + + acc.getValue(ijk.offsetBy( 1,0, 1)>>1)); + case 6:// y&z are odd + return ValueType(0.25)*(acc.getValue(ijk.offsetBy(0,-1,-1)>>1) + + acc.getValue(ijk.offsetBy(0,-1, 1)>>1) + + acc.getValue(ijk.offsetBy(0, 1,-1)>>1) + + acc.getValue(ijk.offsetBy(0, 1, 1)>>1)); + } + // all are odd + ValueType v = zeroVal(); + for (int i=-1; i<=1; i+=2) { + for (int j=-1; j<=1; j+=2) { + for (int k=-1; k<=1; k+=2) v += acc.getValue(ijk.offsetBy(i,j,k)>>1);// xyz + } + } + return ValueType(0.125) * v; + } +};// ProlongateOp + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/ParticleAtlas.h b/openvdb/tools/ParticleAtlas.h new file mode 100644 index 00000000..07338fea --- /dev/null +++ b/openvdb/tools/ParticleAtlas.h @@ -0,0 +1,1033 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file ParticleAtlas.h +/// +/// @brief Space-partitioning acceleration structure for particles, points with +/// radius. Partitions particle indices into voxels to accelerate range +/// and nearest neighbor searches. +/// +/// @note   This acceleration structure only stores integer offsets into an external particle +/// data structure that conforms to the ParticleArray interface.  +/// +/// @details Constructs and maintains a sequence of @c PointIndexGrids each of progressively +/// lower resolution. Particles are uniquely assigned to a particular resolution +/// level based on their radius. This strategy has proven efficient for accelerating +/// spatial queries on particle data sets with varying radii. +/// +/// @details The data structure automatically detects and adapts to particle data sets with +/// uniform radii. The construction is simplified and spatial queries pre-cache the +/// uniform particle radius to avoid redundant access calls to the +/// ParticleArray::getRadius method. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_PARTICLE_ATLAS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_PARTICLE_ATLAS_HAS_BEEN_INCLUDED + +#include "PointIndexGrid.h" + +#include +#include +#include +#include +#include + +#include +#include +#include +#include // for std::min(), std::max() +#include // for std::sqrt() +#include +#include +#include +#include // for std::pair +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +//////////////////////////////////////// + + +/// @brief Partition particles and performs range and nearest-neighbor searches. +/// +/// @interface ParticleArray +/// Expected interface for the ParticleArray container: +/// @code +/// template +/// struct ParticleArray +/// { +/// // The type used to represent world-space positions +/// using PosType = VectorType; +/// using ScalarType = typename PosType::value_type; +/// +/// // Return the number of particles in the array +/// size_t size() const; +/// +/// // Return the world-space position for the nth particle. +/// void getPos(size_t n, PosType& xyz) const; +/// +/// // Return the world-space radius for the nth particle. +/// void getRadius(size_t n, ScalarType& radius) const; +/// }; +/// @endcode +/// +/// @details Constructs a collection of @c PointIndexGrids of different resolutions +/// to accelerate spatial searches for particles with varying radius. +template +struct ParticleAtlas +{ + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using PointIndexGridPtr = typename PointIndexGridType::Ptr; + using IndexType = typename PointIndexGridType::ValueType; + + struct Iterator; + + ////////// + + ParticleAtlas() : mIndexGridArray(), mMinRadiusArray(), mMaxRadiusArray() {} + + /// @brief Partitions particle indices + /// + /// @param particles container conforming to the ParticleArray interface + /// @param minVoxelSize minimum voxel size limit + /// @param maxLevels maximum number of resolution levels + template + void construct(const ParticleArrayType& particles, double minVoxelSize, size_t maxLevels = 50); + + /// @brief Create a new @c ParticleAtlas from the given @a particles. + /// + /// @param particles container conforming to the ParticleArray interface + /// @param minVoxelSize minimum voxel size limit + /// @param maxLevels maximum number of resolution levels + template + static Ptr create(const ParticleArrayType& particles, + double minVoxelSize, size_t maxLevels = 50); + + /// @brief Returns the number of resolution levels. + size_t levels() const { return mIndexGridArray.size(); } + /// @brief true if the container size is 0, false otherwise. + bool empty() const { return mIndexGridArray.empty(); } + + /// @brief Returns minimum particle radius for level @a n. + double minRadius(size_t n) const { return mMinRadiusArray[n]; } + /// @brief Returns maximum particle radius for level @a n. + double maxRadius(size_t n) const { return mMaxRadiusArray[n]; } + + /// @brief Returns the @c PointIndexGrid that represents the given level @a n. + PointIndexGridType& pointIndexGrid(size_t n) { return *mIndexGridArray[n]; } + /// @brief Returns the @c PointIndexGrid that represents the given level @a n. + const PointIndexGridType& pointIndexGrid(size_t n) const { return *mIndexGridArray[n]; } + +private: + // Disallow copying + ParticleAtlas(const ParticleAtlas&); + ParticleAtlas& operator=(const ParticleAtlas&); + + std::vector mIndexGridArray; + std::vector mMinRadiusArray, mMaxRadiusArray; +}; // struct ParticleAtlas + + +using ParticleIndexAtlas = ParticleAtlas; + + +//////////////////////////////////////// + + +/// @brief Provides accelerated range and nearest-neighbor searches for +/// particles that are partitioned using the ParticleAtlas. +/// +/// @note Prefer to construct the iterator object once and reuse it +/// for subsequent queries. +template +struct ParticleAtlas::Iterator +{ + using TreeType = typename PointIndexGridType::TreeType; + using ConstAccessor = tree::ValueAccessor; + using ConstAccessorPtr = std::unique_ptr; + + ///// + + /// @brief Construct an iterator from the given @a atlas. + explicit Iterator(const ParticleAtlas& atlas); + + /// @brief Clear the iterator and update it with the result of the given + /// world-space radial query. + /// @param center world-space center + /// @param radius world-space search radius + /// @param particles container conforming to the ParticleArray interface + template + void worldSpaceSearchAndUpdate(const Vec3d& center, double radius, + const ParticleArrayType& particles); + + /// @brief Clear the iterator and update it with the result of the given + /// world-space radial query. + /// @param bbox world-space bounding box + /// @param particles container conforming to the ParticleArray interface + template + void worldSpaceSearchAndUpdate(const BBoxd& bbox, const ParticleArrayType& particles); + + /// @brief Returns the total number of resolution levels. + size_t levels() const { return mAtlas->levels(); } + + /// @brief Clear the iterator and update it with all particles that reside + /// at the given resolution @a level. + void updateFromLevel(size_t level); + + /// Reset the iterator to point to the first item. + void reset(); + + /// Return a const reference to the item to which this iterator is pointing. + const IndexType& operator*() const { return *mRange.first; } + + /// @{ + /// @brief Return @c true if this iterator is not yet exhausted. + bool test() const { return mRange.first < mRange.second || mIter != mRangeList.end(); } + operator bool() const { return this->test(); } + /// @} + + /// Advance iterator to next item. + void increment(); + + /// Advance iterator to next item. + void operator++() { this->increment(); } + + /// @brief Advance iterator to next item. + /// @return @c true if this iterator is not yet exhausted. + bool next(); + + /// Return the number of point indices in the iterator range. + size_t size() const; + + /// Return @c true if both iterators point to the same element. + bool operator==(const Iterator& p) const { return mRange.first == p.mRange.first; } + bool operator!=(const Iterator& p) const { return !this->operator==(p); } + +private: + Iterator(const Iterator& rhs); + Iterator& operator=(const Iterator& rhs); + + void clear(); + + using Range = std::pair; + using RangeDeque = std::deque; + using RangeDequeCIter = typename RangeDeque::const_iterator; + using IndexArray = std::unique_ptr; + + ParticleAtlas const * const mAtlas; + std::unique_ptr mAccessorList; + + // Primary index collection + Range mRange; + RangeDeque mRangeList; + RangeDequeCIter mIter; + // Secondary index collection + IndexArray mIndexArray; + size_t mIndexArraySize, mAccessorListSize; +}; // struct ParticleAtlas::Iterator + + +//////////////////////////////////////// + +// Internal operators and implementation details + + +namespace particle_atlas_internal { + + +template +struct ComputeExtremas +{ + using PosType = typename ParticleArrayT::PosType; + using ScalarType = typename PosType::value_type; + + ComputeExtremas(const ParticleArrayT& particles) + : particleArray(&particles) + , minRadius(std::numeric_limits::max()) + , maxRadius(-std::numeric_limits::max()) + { + } + + ComputeExtremas(ComputeExtremas& rhs, tbb::split) + : particleArray(rhs.particleArray) + , minRadius(std::numeric_limits::max()) + , maxRadius(-std::numeric_limits::max()) + { + } + + void operator()(const tbb::blocked_range& range) { + + ScalarType radius, tmpMin = minRadius, tmpMax = maxRadius; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + particleArray->getRadius(n, radius); + tmpMin = std::min(radius, tmpMin); + tmpMax = std::max(radius, tmpMax); + } + + minRadius = std::min(minRadius, tmpMin); + maxRadius = std::max(maxRadius, tmpMax); + } + + void join(const ComputeExtremas& rhs) { + minRadius = std::min(minRadius, rhs.minRadius); + maxRadius = std::max(maxRadius, rhs.maxRadius); + } + + ParticleArrayT const * const particleArray; + ScalarType minRadius, maxRadius; +}; // struct ComputeExtremas + + +template +struct SplittableParticleArray +{ + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + using ParticleArray = ParticleArrayT; + + using PosType = typename ParticleArray::PosType; + using ScalarType = typename PosType::value_type; + + SplittableParticleArray(const ParticleArrayT& particles) + : mIndexMap(), mParticleArray(&particles), mSize(particles.size()) + { + updateExtremas(); + } + + SplittableParticleArray(const ParticleArrayT& particles, double minR, double maxR) + : mIndexMap(), mParticleArray(&particles), mSize(particles.size()) + { + mMinRadius = ScalarType(minR); + mMaxRadius = ScalarType(maxR); + } + + const ParticleArrayT& particleArray() const { return *mParticleArray; } + + size_t size() const { return mSize; } + + void getPos(size_t n, PosType& xyz) const + { return mParticleArray->getPos(getGlobalIndex(n), xyz); } + void getRadius(size_t n, ScalarType& radius) const + { return mParticleArray->getRadius(getGlobalIndex(n), radius); } + + ScalarType minRadius() const { return mMinRadius; } + ScalarType maxRadius() const { return mMaxRadius; } + + size_t getGlobalIndex(size_t n) const { return mIndexMap ? size_t(mIndexMap[n]) : n; } + + /// Move all particle indices that have a radius larger or equal to @a maxRadiusLimit + /// into a separate container. + Ptr split(ScalarType maxRadiusLimit) { + + if (mMaxRadius < maxRadiusLimit) return Ptr(); + + std::unique_ptr mask{new bool[mSize]}; + + tbb::parallel_for(tbb::blocked_range(0, mSize), + MaskParticles(*this, mask, maxRadiusLimit)); + + Ptr output(new SplittableParticleArray(*this, mask)); + if (output->size() == 0) return Ptr(); + + size_t newSize = 0; + for (size_t n = 0, N = mSize; n < N; ++n) { + newSize += size_t(!mask[n]); + } + + std::unique_ptr newIndexMap{new PointIndex[newSize]}; + + setIndexMap(newIndexMap, mask, false); + + mSize = newSize; + mIndexMap.swap(newIndexMap); + updateExtremas(); + + return output; + } + + +private: + // Disallow copying + SplittableParticleArray(const SplittableParticleArray&); + SplittableParticleArray& operator=(const SplittableParticleArray&); + + // Masked copy constructor + SplittableParticleArray(const SplittableParticleArray& other, + const std::unique_ptr& mask) + : mIndexMap(), mParticleArray(&other.particleArray()), mSize(0) + { + for (size_t n = 0, N = other.size(); n < N; ++n) { + mSize += size_t(mask[n]); + } + + if (mSize != 0) { + mIndexMap.reset(new PointIndex[mSize]); + other.setIndexMap(mIndexMap, mask, true); + } + + updateExtremas(); + } + + struct MaskParticles { + MaskParticles(const SplittableParticleArray& particles, + const std::unique_ptr& mask, ScalarType radius) + : particleArray(&particles) + , particleMask(mask.get()) + , radiusLimit(radius) + { + } + + void operator()(const tbb::blocked_range& range) const { + const ScalarType maxRadius = radiusLimit; + ScalarType radius; + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + particleArray->getRadius(n, radius); + particleMask[n] = !(radius < maxRadius); + } + } + + SplittableParticleArray const * const particleArray; + bool * const particleMask; + ScalarType const radiusLimit; + }; // struct MaskParticles + + inline void updateExtremas() { + ComputeExtremas op(*this); + tbb::parallel_reduce(tbb::blocked_range(0, mSize), op); + mMinRadius = op.minRadius; + mMaxRadius = op.maxRadius; + } + + void setIndexMap(std::unique_ptr& newIndexMap, + const std::unique_ptr& mask, bool maskValue) const + { + if (mIndexMap.get() != nullptr) { + const PointIndex* indices = mIndexMap.get(); + for (size_t idx = 0, n = 0, N = mSize; n < N; ++n) { + if (mask[n] == maskValue) newIndexMap[idx++] = indices[n]; + } + } else { + for (size_t idx = 0, n = 0, N = mSize; n < N; ++n) { + if (mask[n] == maskValue) { + newIndexMap[idx++] = PointIndex(static_cast(n)); + } + } + } + } + + + ////////// + + std::unique_ptr mIndexMap; + ParticleArrayT const * const mParticleArray; + size_t mSize; + ScalarType mMinRadius, mMaxRadius; +}; // struct SplittableParticleArray + + +template +struct RemapIndices { + + RemapIndices(const ParticleArrayType& particles, std::vector& nodes) + : mParticles(&particles) + , mNodes(nodes.empty() ? nullptr : &nodes.front()) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using PointIndexType = typename PointIndexLeafNodeType::ValueType; + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + PointIndexLeafNodeType& node = *mNodes[n]; + const size_t numIndices = node.indices().size(); + + if (numIndices > 0) { + PointIndexType* begin = &node.indices().front(); + const PointIndexType* end = begin + numIndices; + + while (begin < end) { + *begin = PointIndexType(static_cast( + mParticles->getGlobalIndex(*begin))); + ++begin; + } + } + } + } + + ParticleArrayType const * const mParticles; + PointIndexLeafNodeType * const * const mNodes; +}; // struct RemapIndices + + +template +struct RadialRangeFilter +{ + using PosType = typename ParticleArrayType::PosType; + using ScalarType = typename PosType::value_type; + + using Range = std::pair; + using RangeDeque = std::deque; + using IndexDeque = std::deque; + + RadialRangeFilter(RangeDeque& ranges, IndexDeque& indices, const PosType& xyz, + ScalarType radius, const ParticleArrayType& particles, bool hasUniformRadius = false) + : mRanges(ranges) + , mIndices(indices) + , mCenter(xyz) + , mRadius(radius) + , mParticles(&particles) + , mHasUniformRadius(hasUniformRadius) + { + if (mHasUniformRadius) { + ScalarType uniformRadius; + mParticles->getRadius(0, uniformRadius); + mRadius = mRadius + uniformRadius; + mRadius *= mRadius; + } + } + + template + void filterLeafNode(const LeafNodeType& leaf) + { + const size_t numIndices = leaf.indices().size(); + if (numIndices > 0) { + const IndexT* begin = &leaf.indices().front(); + filterVoxel(leaf.origin(), begin, begin + numIndices); + } + } + + void filterVoxel(const Coord&, const IndexT* begin, const IndexT* end) + { + PosType pos; + + if (mHasUniformRadius) { + + const ScalarType searchRadiusSqr = mRadius; + + while (begin < end) { + mParticles->getPos(size_t(*begin), pos); + const ScalarType distSqr = (mCenter - pos).lengthSqr(); + if (distSqr < searchRadiusSqr) { + mIndices.push_back(*begin); + } + ++begin; + } + } else { + while (begin < end) { + const size_t idx = size_t(*begin); + mParticles->getPos(idx, pos); + + ScalarType radius; + mParticles->getRadius(idx, radius); + + ScalarType searchRadiusSqr = mRadius + radius; + searchRadiusSqr *= searchRadiusSqr; + + const ScalarType distSqr = (mCenter - pos).lengthSqr(); + + if (distSqr < searchRadiusSqr) { + mIndices.push_back(*begin); + } + + ++begin; + } + } + } + +private: + RadialRangeFilter(const RadialRangeFilter&); + RadialRangeFilter& operator=(const RadialRangeFilter&); + + RangeDeque& mRanges; + IndexDeque& mIndices; + PosType const mCenter; + ScalarType mRadius; + ParticleArrayType const * const mParticles; + bool const mHasUniformRadius; +}; // struct RadialRangeFilter + + +template +struct BBoxFilter +{ + using PosType = typename ParticleArrayType::PosType; + using ScalarType = typename PosType::value_type; + + using Range = std::pair; + using RangeDeque = std::deque; + using IndexDeque = std::deque; + + BBoxFilter(RangeDeque& ranges, IndexDeque& indices, + const BBoxd& bbox, const ParticleArrayType& particles, bool hasUniformRadius = false) + : mRanges(ranges) + , mIndices(indices) + , mBBox(PosType(bbox.min()), PosType(bbox.max())) + , mCenter(mBBox.getCenter()) + , mParticles(&particles) + , mHasUniformRadius(hasUniformRadius) + , mUniformRadiusSqr(ScalarType(0.0)) + { + if (mHasUniformRadius) { + mParticles->getRadius(0, mUniformRadiusSqr); + mUniformRadiusSqr *= mUniformRadiusSqr; + } + } + + template + void filterLeafNode(const LeafNodeType& leaf) + { + const size_t numIndices = leaf.indices().size(); + if (numIndices > 0) { + const IndexT* begin = &leaf.indices().front(); + filterVoxel(leaf.origin(), begin, begin + numIndices); + } + } + + void filterVoxel(const Coord&, const IndexT* begin, const IndexT* end) + { + PosType pos; + + if (mHasUniformRadius) { + const ScalarType radiusSqr = mUniformRadiusSqr; + + while (begin < end) { + + mParticles->getPos(size_t(*begin), pos); + if (mBBox.isInside(pos)) { + mIndices.push_back(*begin++); + continue; + } + + const ScalarType distSqr = pointToBBoxDistSqr(pos); + if (!(distSqr > radiusSqr)) { + mIndices.push_back(*begin); + } + + ++begin; + } + + } else { + while (begin < end) { + + const size_t idx = size_t(*begin); + mParticles->getPos(idx, pos); + if (mBBox.isInside(pos)) { + mIndices.push_back(*begin++); + continue; + } + + ScalarType radius; + mParticles->getRadius(idx, radius); + const ScalarType distSqr = pointToBBoxDistSqr(pos); + if (!(distSqr > (radius * radius))) { + mIndices.push_back(*begin); + } + + ++begin; + } + } + } + +private: + BBoxFilter(const BBoxFilter&); + BBoxFilter& operator=(const BBoxFilter&); + + ScalarType pointToBBoxDistSqr(const PosType& pos) const + { + ScalarType distSqr = ScalarType(0.0); + + for (int i = 0; i < 3; ++i) { + + const ScalarType a = pos[i]; + + ScalarType b = mBBox.min()[i]; + if (a < b) { + ScalarType delta = b - a; + distSqr += delta * delta; + } + + b = mBBox.max()[i]; + if (a > b) { + ScalarType delta = a - b; + distSqr += delta * delta; + } + } + + return distSqr; + } + + RangeDeque& mRanges; + IndexDeque& mIndices; + math::BBox const mBBox; + PosType const mCenter; + ParticleArrayType const * const mParticles; + bool const mHasUniformRadius; + ScalarType mUniformRadiusSqr; +}; // struct BBoxFilter + + +} // namespace particle_atlas_internal + + +//////////////////////////////////////// + + +template +template +inline void +ParticleAtlas::construct( + const ParticleArrayType& particles, double minVoxelSize, size_t maxLevels) +{ + using SplittableParticleArray = + typename particle_atlas_internal::SplittableParticleArray; + using SplittableParticleArrayPtr = typename SplittableParticleArray::Ptr; + using ScalarType = typename ParticleArrayType::ScalarType; + + ///// + + particle_atlas_internal::ComputeExtremas extremas(particles); + tbb::parallel_reduce(tbb::blocked_range(0, particles.size()), extremas); + const double firstMin = extremas.minRadius; + const double firstMax = extremas.maxRadius; + const double firstVoxelSize = std::max(minVoxelSize, firstMin); + + if (!(firstMax < (firstVoxelSize * double(2.0))) && maxLevels > 1) { + + std::vector levels; + levels.push_back(SplittableParticleArrayPtr( + new SplittableParticleArray(particles, firstMin, firstMax))); + + std::vector voxelSizeArray; + voxelSizeArray.push_back(firstVoxelSize); + + for (size_t n = 0; n < maxLevels; ++n) { + + const double maxParticleRadius = double(levels.back()->maxRadius()); + const double particleRadiusLimit = voxelSizeArray.back() * double(2.0); + if (maxParticleRadius < particleRadiusLimit) break; + + SplittableParticleArrayPtr newLevel = + levels.back()->split(ScalarType(particleRadiusLimit)); + if (!newLevel) break; + + levels.push_back(newLevel); + voxelSizeArray.push_back(double(newLevel->minRadius())); + } + + size_t numPoints = 0; + + using PointIndexTreeType = typename PointIndexGridType::TreeType; + using PointIndexLeafNodeType = typename PointIndexTreeType::LeafNodeType; + + std::vector nodes; + + for (size_t n = 0, N = levels.size(); n < N; ++n) { + + const SplittableParticleArray& particleArray = *levels[n]; + + numPoints += particleArray.size(); + + mMinRadiusArray.push_back(double(particleArray.minRadius())); + mMaxRadiusArray.push_back(double(particleArray.maxRadius())); + + PointIndexGridPtr grid = + createPointIndexGrid(particleArray, voxelSizeArray[n]); + + nodes.clear(); + grid->tree().getNodes(nodes); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + particle_atlas_internal::RemapIndices(particleArray, nodes)); + + mIndexGridArray.push_back(grid); + } + + } else { + mMinRadiusArray.push_back(firstMin); + mMaxRadiusArray.push_back(firstMax); + mIndexGridArray.push_back( + createPointIndexGrid(particles, firstVoxelSize)); + } +} + + +template +template +inline typename ParticleAtlas::Ptr +ParticleAtlas::create( + const ParticleArrayType& particles, double minVoxelSize, size_t maxLevels) +{ + Ptr ret(new ParticleAtlas()); + ret->construct(particles, minVoxelSize, maxLevels); + return ret; +} + + +//////////////////////////////////////// + +// ParticleAtlas::Iterator implementation + +template +inline +ParticleAtlas::Iterator::Iterator(const ParticleAtlas& atlas) + : mAtlas(&atlas) + , mAccessorList() + , mRange(static_cast(nullptr), static_cast(nullptr)) + , mRangeList() + , mIter(mRangeList.begin()) + , mIndexArray() + , mIndexArraySize(0) + , mAccessorListSize(atlas.levels()) +{ + if (mAccessorListSize > 0) { + mAccessorList.reset(new ConstAccessorPtr[mAccessorListSize]); + for (size_t n = 0, N = mAccessorListSize; n < N; ++n) { + mAccessorList[n].reset(new ConstAccessor(atlas.pointIndexGrid(n).tree())); + } + } +} + + +template +inline void +ParticleAtlas::Iterator::reset() +{ + mIter = mRangeList.begin(); + if (!mRangeList.empty()) { + mRange = mRangeList.front(); + } else if (mIndexArray) { + mRange.first = mIndexArray.get(); + mRange.second = mRange.first + mIndexArraySize; + } else { + mRange.first = static_cast(nullptr); + mRange.second = static_cast(nullptr); + } +} + + +template +inline void +ParticleAtlas::Iterator::increment() +{ + ++mRange.first; + if (mRange.first >= mRange.second && mIter != mRangeList.end()) { + ++mIter; + if (mIter != mRangeList.end()) { + mRange = *mIter; + } else if (mIndexArray) { + mRange.first = mIndexArray.get(); + mRange.second = mRange.first + mIndexArraySize; + } + } +} + + +template +inline bool +ParticleAtlas::Iterator::next() +{ + if (!this->test()) return false; + this->increment(); + return this->test(); +} + + +template +inline size_t +ParticleAtlas::Iterator::size() const +{ + size_t count = 0; + typename RangeDeque::const_iterator it = + mRangeList.begin(), end = mRangeList.end(); + + for ( ; it != end; ++it) { + count += it->second - it->first; + } + + return count + mIndexArraySize; +} + + +template +inline void +ParticleAtlas::Iterator::clear() +{ + mRange.first = static_cast(nullptr); + mRange.second = static_cast(nullptr); + mRangeList.clear(); + mIter = mRangeList.end(); + mIndexArray.reset(); + mIndexArraySize = 0; +} + + +template +inline void +ParticleAtlas::Iterator::updateFromLevel(size_t level) +{ + using TreeT = typename PointIndexGridType::TreeType; + using LeafNodeType = typename TreeType::LeafNodeType; + + this->clear(); + + if (mAccessorListSize > 0) { + const size_t levelIdx = std::min(mAccessorListSize - 1, level); + + const TreeT& tree = mAtlas->pointIndexGrid(levelIdx).tree(); + + std::vector nodes; + tree.getNodes(nodes); + + for (size_t n = 0, N = nodes.size(); n < N; ++n) { + + const LeafNodeType& node = *nodes[n]; + const size_t numIndices = node.indices().size(); + + if (numIndices > 0) { + const IndexType* begin = &node.indices().front(); + mRangeList.push_back(Range(begin, (begin + numIndices))); + } + } + } + + this->reset(); +} + + +template +template +inline void +ParticleAtlas::Iterator::worldSpaceSearchAndUpdate( + const Vec3d& center, double radius, const ParticleArrayType& particles) +{ + using PosType = typename ParticleArrayType::PosType; + using ScalarType = typename ParticleArrayType::ScalarType; + + ///// + + this->clear(); + + std::deque filteredIndices; + std::vector searchRegions; + + const double iRadius = radius * double(1.0 / std::sqrt(3.0)); + + const Vec3d ibMin(center[0] - iRadius, center[1] - iRadius, center[2] - iRadius); + const Vec3d ibMax(center[0] + iRadius, center[1] + iRadius, center[2] + iRadius); + + const Vec3d bMin(center[0] - radius, center[1] - radius, center[2] - radius); + const Vec3d bMax(center[0] + radius, center[1] + radius, center[2] + radius); + + const PosType pos = PosType(center); + const ScalarType dist = ScalarType(radius); + + for (size_t n = 0, N = mAccessorListSize; n < N; ++n) { + + const double maxRadius = mAtlas->maxRadius(n); + const bool uniformRadius = math::isApproxEqual(mAtlas->minRadius(n), maxRadius); + + const openvdb::math::Transform& xform = mAtlas->pointIndexGrid(n).transform(); + + ConstAccessor& acc = *mAccessorList[n]; + + openvdb::CoordBBox inscribedRegion( + xform.worldToIndexCellCentered(ibMin), + xform.worldToIndexCellCentered(ibMax)); + + inscribedRegion.expand(-1); // erode by one voxel + + // collect indices that don't need to be tested + point_index_grid_internal::pointIndexSearch(mRangeList, acc, inscribedRegion); + + searchRegions.clear(); + + const openvdb::CoordBBox region( + xform.worldToIndexCellCentered(bMin - maxRadius), + xform.worldToIndexCellCentered(bMax + maxRadius)); + + inscribedRegion.expand(1); + point_index_grid_internal::constructExclusiveRegions( + searchRegions, region, inscribedRegion); + + using FilterType = particle_atlas_internal::RadialRangeFilter; + FilterType filter(mRangeList, filteredIndices, pos, dist, particles, uniformRadius); + + for (size_t i = 0, I = searchRegions.size(); i < I; ++i) { + point_index_grid_internal::filteredPointIndexSearch(filter, acc, searchRegions[i]); + } + } + + point_index_grid_internal::dequeToArray(filteredIndices, mIndexArray, mIndexArraySize); + + this->reset(); +} + + +template +template +inline void +ParticleAtlas::Iterator::worldSpaceSearchAndUpdate( + const BBoxd& bbox, const ParticleArrayType& particles) +{ + this->clear(); + + std::deque filteredIndices; + std::vector searchRegions; + + for (size_t n = 0, N = mAccessorListSize; n < N; ++n) { + + const double maxRadius = mAtlas->maxRadius(n); + const bool uniformRadius = math::isApproxEqual(mAtlas->minRadius(n), maxRadius); + const openvdb::math::Transform& xform = mAtlas->pointIndexGrid(n).transform(); + + ConstAccessor& acc = *mAccessorList[n]; + + openvdb::CoordBBox inscribedRegion( + xform.worldToIndexCellCentered(bbox.min()), + xform.worldToIndexCellCentered(bbox.max())); + + inscribedRegion.expand(-1); // erode by one voxel + + // collect indices that don't need to be tested + point_index_grid_internal::pointIndexSearch(mRangeList, acc, inscribedRegion); + + searchRegions.clear(); + + const openvdb::CoordBBox region( + xform.worldToIndexCellCentered(bbox.min() - maxRadius), + xform.worldToIndexCellCentered(bbox.max() + maxRadius)); + + inscribedRegion.expand(1); + point_index_grid_internal::constructExclusiveRegions( + searchRegions, region, inscribedRegion); + + using FilterType = particle_atlas_internal::BBoxFilter; + FilterType filter(mRangeList, filteredIndices, bbox, particles, uniformRadius); + + for (size_t i = 0, I = searchRegions.size(); i < I; ++i) { + point_index_grid_internal::filteredPointIndexSearch(filter, acc, searchRegions[i]); + } + } + + point_index_grid_internal::dequeToArray(filteredIndices, mIndexArray, mIndexArraySize); + + this->reset(); +} + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_PARTICLE_ATLAS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/ParticlesToLevelSet.h b/openvdb/tools/ParticlesToLevelSet.h new file mode 100644 index 00000000..ed0c28b3 --- /dev/null +++ b/openvdb/tools/ParticlesToLevelSet.h @@ -0,0 +1,1032 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file tools/ParticlesToLevelSet.h +/// +/// @brief Rasterize particles with position, radius and velocity +/// into either a boolean mask grid or a narrow-band level set grid. +/// +/// @details Optionally, arbitrary attributes on the particles can be transferred, +/// resulting in additional output grids with the same topology as the main grid. +/// +/// @note Particle to level set conversion is intended to be combined with +/// some kind of surface postprocessing, using +/// @vdblink::tools::LevelSetFilter LevelSetFilter@endlink, for example. +/// Without such postprocessing the generated surface is typically too noisy and blobby. +/// However, it serves as a great and fast starting point for subsequent +/// level set surface processing and convolution. +/// +/// @details For particle access, any class with the following interface may be used +/// (see the unit test or the From Particles Houdini SOP for practical examples): +/// @code +/// struct ParticleList +/// { +/// // Return the total number of particles in the list. +/// // Always required! +/// size_t size() const; +/// +/// // Get the world-space position of the nth particle. +/// // Required by rasterizeSpheres(). +/// void getPos(size_t n, Vec3R& xyz) const; +/// +/// // Get the world-space position and radius of the nth particle. +/// // Required by rasterizeSpheres(). +/// void getPosRad(size_t n, Vec3R& xyz, Real& radius) const; +/// +/// // Get the world-space position, radius and velocity of the nth particle. +/// // Required by rasterizeTrails(). +/// void getPosRadVel(size_t n, Vec3R& xyz, Real& radius, Vec3R& velocity) const; +/// +/// // Get the value of the nth particle's user-defined attribute (of type @c AttributeType). +/// // Required only if attribute transfer is enabled in ParticlesToLevelSet. +/// void getAtt(size_t n, AttributeType& att) const; +/// }; +/// @endcode +/// +/// Some functions accept an interrupter argument. This refers to any class +/// with the following interface: +/// @code +/// struct Interrupter +/// { +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent=-1) // return true to abort computation +/// }; +/// @endcode +/// +/// The default interrupter is @vdblink::util::NullInterrupter NullInterrupter@endlink, +/// for which all calls are no-ops that incur no computational overhead. + +#ifndef OPENVDB_TOOLS_PARTICLES_TO_LEVELSET_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_PARTICLES_TO_LEVELSET_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "Composite.h" // for csgUnion() +#include "PointPartitioner.h" +#include "Prune.h" +#include "SignedFloodFill.h" +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Populate a scalar, floating-point grid with CSG-unioned level set spheres +/// described by the given particle positions and radii. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +template +inline void particlesToSdf(const ParticleListT&, GridT&, InterrupterT* = nullptr); + +/// @brief Populate a scalar, floating-point grid with fixed-size, CSG-unioned +/// level set spheres described by the given particle positions and the specified radius. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +template +inline void particlesToSdf(const ParticleListT&, GridT&, Real radius, InterrupterT* = nullptr); + +/// @brief Populate a scalar, floating-point grid with CSG-unioned trails +/// of level set spheres with decreasing radius, where the starting position and radius +/// and the direction of each trail is given by particle attributes. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +/// @note The @a delta parameter controls the distance between spheres in a trail. +/// Be careful not to use too small a value. +template +inline void particleTrailsToSdf(const ParticleListT&, GridT&, Real delta=1, InterrupterT* =nullptr); + +/// @brief Activate a boolean grid wherever it intersects the spheres +/// described by the given particle positions and radii. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +template +inline void particlesToMask(const ParticleListT&, GridT&, InterrupterT* = nullptr); + +/// @brief Activate a boolean grid wherever it intersects the fixed-size spheres +/// described by the given particle positions and the specified radius. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +template +inline void particlesToMask(const ParticleListT&, GridT&, Real radius, InterrupterT* = nullptr); + +/// @brief Activate a boolean grid wherever it intersects trails of spheres +/// with decreasing radius, where the starting position and radius and the direction +/// of each trail is given by particle attributes. +/// @details For more control over the output, including attribute transfer, +/// use the ParticlesToLevelSet class directly. +/// @note The @a delta parameter controls the distance between spheres in a trail. +/// Be careful not to use too small a value. +template +inline void particleTrailsToMask(const ParticleListT&, GridT&,Real delta=1,InterrupterT* =nullptr); + + +//////////////////////////////////////// + + +namespace p2ls_internal { +// This is a simple type that combines a distance value and a particle +// attribute. It's required for attribute transfer which is performed +// in the ParticlesToLevelSet::Raster member class defined below. +/// @private +template class BlindData; +} + + +template +class ParticlesToLevelSet +{ +public: + using DisableT = typename std::is_void::type; + using InterrupterType = InterrupterT; + + using SdfGridType = SdfGridT; + using SdfType = typename SdfGridT::ValueType; + + using AttType = typename std::conditional::type; + using AttGridType = typename SdfGridT::template ValueConverter::Type; + + static const bool OutputIsMask = std::is_same::value; + + /// @brief Constructor using an existing boolean or narrow-band level set grid + /// + /// @param grid grid into which particles are rasterized + /// @param interrupt callback to interrupt a long-running process + /// + /// @details If the input grid is already populated with signed distances, + /// particles are unioned onto the existing level set surface. + /// + /// @details The width in voxel units of the generated narrow band level set + /// is given by 2×background/dx, where @a background + /// is the background value stored in the grid and @a dx is the voxel size + /// derived from the transform associated with the grid. + /// Also note that −background corresponds to the constant value + /// inside the generated narrow-band level set. + /// + /// @note If attribute transfer is enabled, i.e., if @c AttributeT is not @c void, + /// attributes are generated only for voxels that overlap with particles, + /// not for any other preexisting voxels (for which no attributes exist!). + explicit ParticlesToLevelSet(SdfGridT& grid, InterrupterT* interrupt = nullptr); + + ~ParticlesToLevelSet() { delete mBlindGrid; } + + /// @brief This method syncs up the level set and attribute grids + /// and therefore needs to be called before any of those grids are + /// used and after the last call to any of the rasterizer methods. + /// @details It has no effect or overhead if attribute transfer is disabled + /// (i.e., if @c AttributeT is @c void) and @a prune is @c false. + /// + /// @note Avoid calling this method more than once, and call it only after + /// all the particles have been rasterized. + void finalize(bool prune = false); + + /// @brief Return a pointer to the grid containing the optional user-defined attribute. + /// @warning If attribute transfer is disabled (i.e., if @c AttributeT is @c void) + /// or if @link finalize() finalize@endlink is not called, the pointer will be null. + typename AttGridType::Ptr attributeGrid() { return mAttGrid; } + + /// @brief Return the size of a voxel in world units. + Real getVoxelSize() const { return mDx; } + + /// @brief Return the half-width of the narrow band in voxel units. + Real getHalfWidth() const { return mHalfWidth; } + + /// @brief Return the smallest radius allowed in voxel units. + Real getRmin() const { return mRmin; } + /// @brief Set the smallest radius allowed in voxel units. + void setRmin(Real Rmin) { mRmin = math::Max(Real(0),Rmin); } + + /// @brief Return the largest radius allowed in voxel units. + Real getRmax() const { return mRmax; } + /// @brief Set the largest radius allowed in voxel units. + void setRmax(Real Rmax) { mRmax = math::Max(mRmin,Rmax); } + + /// @brief Return @c true if any particles were ignored due to their size. + bool ignoredParticles() const { return mMinCount>0 || mMaxCount>0; } + /// @brief Return the number of particles that were ignored because they were + /// smaller than the minimum radius. + size_t getMinCount() const { return mMinCount; } + /// @brief Return the number of particles that were ignored because they were + /// larger than the maximum radius. + size_t getMaxCount() const { return mMaxCount; } + + /// @brief Return the grain size used for threading + int getGrainSize() const { return mGrainSize; } + /// @brief Set the grain size used for threading. + /// @note A grain size of zero or less disables threading. + void setGrainSize(int grainSize) { mGrainSize = grainSize; } + + /// @brief Rasterize each particle as a sphere with the particle's position and radius. + /// @details For level set output, all spheres are CSG-unioned. + template + void rasterizeSpheres(const ParticleListT& pa); + + /// @brief Rasterize each particle as a sphere with the particle's position + /// and a fixed radius. + /// @details For level set output, all spheres are CSG-unioned. + /// + /// @param pa particles with positions + /// @param radius fixed sphere radius in world units. + template + void rasterizeSpheres(const ParticleListT& pa, Real radius); + + /// @brief Rasterize each particle as a trail comprising the CSG union + /// of spheres of decreasing radius. + /// + /// @param pa particles with position, radius and velocity. + /// @param delta controls the distance between sphere instances + /// + /// @warning Be careful not to use too small values for @a delta, + /// since this can lead to excessive computation per trail (which the + /// interrupter can't stop). + /// + /// @note The direction of a trail is opposite to that of the velocity vector, + /// and its length is given by the magnitude of the velocity. + /// The radius at the head of the trail is given by the radius of the particle, + /// and the radius at the tail is @a Rmin voxel units, which has + /// a default value of 1.5 corresponding to the Nyquist frequency! + template + void rasterizeTrails(const ParticleListT& pa, Real delta=1.0); + +private: + using BlindType = p2ls_internal::BlindData; + using BlindGridType = typename SdfGridT::template ValueConverter::Type; + + /// Class with multi-threaded implementation of particle rasterization + template struct Raster; + + SdfGridType* mSdfGrid; + typename AttGridType::Ptr mAttGrid; + BlindGridType* mBlindGrid; + InterrupterT* mInterrupter; + Real mDx, mHalfWidth; + Real mRmin, mRmax; // ignore particles outside this range of radii in voxel + size_t mMinCount, mMaxCount; // counters for ignored particles + int mGrainSize; +}; // class ParticlesToLevelSet + + +template +inline ParticlesToLevelSet:: +ParticlesToLevelSet(SdfGridT& grid, InterrupterT* interrupter) : + mSdfGrid(&grid), + mBlindGrid(nullptr), + mInterrupter(interrupter), + mDx(grid.voxelSize()[0]), + mHalfWidth(grid.background()/mDx), + mRmin(1.5),// corresponds to the Nyquist grid sampling frequency + mRmax(100.0),// corresponds to a huge particle (probably too large!) + mMinCount(0), + mMaxCount(0), + mGrainSize(1) +{ + if (!mSdfGrid->hasUniformVoxels()) { + OPENVDB_THROW(RuntimeError, "ParticlesToLevelSet only supports uniform voxels!"); + } + if (!DisableT::value) { + mBlindGrid = new BlindGridType(BlindType(grid.background())); + mBlindGrid->setTransform(mSdfGrid->transform().copy()); + } +} + +template +template +inline void ParticlesToLevelSet:: +rasterizeSpheres(const ParticleListT& pa) +{ + if (DisableT::value) { + Raster r(*this, mSdfGrid, pa); + r.rasterizeSpheres(); + } else { + Raster r(*this, mBlindGrid, pa); + r.rasterizeSpheres(); + } +} + +template +template +inline void ParticlesToLevelSet:: +rasterizeSpheres(const ParticleListT& pa, Real radius) +{ + if (DisableT::value) { + Raster r(*this, mSdfGrid, pa); + r.rasterizeSpheres(radius/mDx); + } else { + Raster r(*this, mBlindGrid, pa); + r.rasterizeSpheres(radius/mDx); + } +} + +template +template +inline void ParticlesToLevelSet:: +rasterizeTrails(const ParticleListT& pa, Real delta) +{ + if (DisableT::value) { + Raster r(*this, mSdfGrid, pa); + r.rasterizeTrails(delta); + } else { + Raster r(*this, mBlindGrid, pa); + r.rasterizeTrails(delta); + } +} + + +template +inline void +ParticlesToLevelSet::finalize(bool prune) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + + if (!mBlindGrid) { + if (prune) { + if (OutputIsMask) { + tools::prune(mSdfGrid->tree()); + } else { + tools::pruneLevelSet(mSdfGrid->tree()); + } + } + return; + } + + if (prune) tools::prune(mBlindGrid->tree()); + + using AttTreeT = typename AttGridType::TreeType; + using AttLeafT = typename AttTreeT::LeafNodeType; + using BlindTreeT = typename BlindGridType::TreeType; + using BlindLeafIterT = typename BlindTreeT::LeafCIter; + using BlindLeafT = typename BlindTreeT::LeafNodeType; + using SdfTreeT = typename SdfGridType::TreeType; + using SdfLeafT = typename SdfTreeT::LeafNodeType; + + // Use topology copy constructors since output grids have the same topology as mBlindDataGrid + const BlindTreeT& blindTree = mBlindGrid->tree(); + + // Create the output attribute grid. + typename AttTreeT::Ptr attTree(new AttTreeT( + blindTree, blindTree.background().blind(), openvdb::TopologyCopy())); + // Note this overwrites any existing attribute grids! + mAttGrid = typename AttGridType::Ptr(new AttGridType(attTree)); + mAttGrid->setTransform(mBlindGrid->transform().copy()); + + typename SdfTreeT::Ptr sdfTree; // the output mask or level set tree + + // Extract the attribute grid and the mask or level set grid from mBlindDataGrid. + if (OutputIsMask) { + sdfTree.reset(new SdfTreeT(blindTree, + /*off=*/SdfType(0), /*on=*/SdfType(1), TopologyCopy())); + + // Copy leaf voxels in parallel. + tree::LeafManager leafNodes(*attTree); + leafNodes.foreach([&](AttLeafT& attLeaf, size_t /*leafIndex*/) { + if (const auto* blindLeaf = blindTree.probeConstLeaf(attLeaf.origin())) { + for (auto iter = attLeaf.beginValueOn(); iter; ++iter) { + const auto pos = iter.pos(); + attLeaf.setValueOnly(pos, blindLeaf->getValue(pos).blind()); + } + } + }); + // Copy tiles serially. + const auto blindAcc = mBlindGrid->getConstAccessor(); + auto iter = attTree->beginValueOn(); + iter.setMaxDepth(AttTreeT::ValueOnIter::LEAF_DEPTH - 1); + for ( ; iter; ++iter) { + iter.modifyValue([&](AttType& v) { v = blindAcc.getValue(iter.getCoord()).blind(); }); + } + } else { + // Here we exploit the fact that by design level sets have no active tiles. + // Only leaf voxels can be active. + sdfTree.reset(new SdfTreeT(blindTree, blindTree.background().visible(), TopologyCopy())); + for (BlindLeafIterT n = blindTree.cbeginLeaf(); n; ++n) { + const BlindLeafT& leaf = *n; + const openvdb::Coord xyz = leaf.origin(); + // Get leafnodes that were allocated during topology construction! + SdfLeafT* sdfLeaf = sdfTree->probeLeaf(xyz); + AttLeafT* attLeaf = attTree->probeLeaf(xyz); + // Use linear offset (vs coordinate) access for better performance! + typename BlindLeafT::ValueOnCIter m=leaf.cbeginValueOn(); + if (!m) {//no active values in leaf node so copy everything + for (openvdb::Index k = 0; k!=BlindLeafT::SIZE; ++k) { + const BlindType& v = leaf.getValue(k); + sdfLeaf->setValueOnly(k, v.visible()); + attLeaf->setValueOnly(k, v.blind()); + } + } else {//only copy active values (using flood fill for the inactive values) + for(; m; ++m) { + const openvdb::Index k = m.pos(); + const BlindType& v = *m; + sdfLeaf->setValueOnly(k, v.visible()); + attLeaf->setValueOnly(k, v.blind()); + } + } + } + tools::signedFloodFill(*sdfTree);//required since we only transferred active voxels! + } + + if (mSdfGrid->empty()) { + mSdfGrid->setTree(sdfTree); + } else { + if (OutputIsMask) { + mSdfGrid->tree().topologyUnion(*sdfTree); + tools::prune(mSdfGrid->tree()); + } else { + tools::csgUnion(mSdfGrid->tree(), *sdfTree, /*prune=*/true); + } + } + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +/////////////////////////////////////////////////////////// + + +template +template +struct ParticlesToLevelSet::Raster +{ + using DisableT = typename std::is_void::type; + using ParticlesToLevelSetT = ParticlesToLevelSet; + using SdfT = typename ParticlesToLevelSetT::SdfType; // type of signed distance values + using AttT = typename ParticlesToLevelSetT::AttType; // type of particle attribute + using ValueT = typename GridT::ValueType; + using AccessorT = typename GridT::Accessor; + using TreeT = typename GridT::TreeType; + using LeafNodeT = typename TreeT::LeafNodeType; + using PointPartitionerT = PointPartitioner; + + static const bool + OutputIsMask = std::is_same::value, + DoAttrXfer = !DisableT::value; + + /// @brief Main constructor + Raster(ParticlesToLevelSetT& parent, GridT* grid, const ParticleListT& particles) + : mParent(parent) + , mParticles(particles) + , mGrid(grid) + , mMap(*(mGrid->transform().baseMap())) + , mMinCount(0) + , mMaxCount(0) + , mIsCopy(false) + { + mPointPartitioner = new PointPartitionerT; + mPointPartitioner->construct(particles, mGrid->transform()); + } + + /// @brief Copy constructor called by tbb threads + Raster(Raster& other, tbb::split) + : mParent(other.mParent) + , mParticles(other.mParticles) + , mGrid(new GridT(*other.mGrid, openvdb::ShallowCopy())) + , mMap(other.mMap) + , mMinCount(0) + , mMaxCount(0) + , mTask(other.mTask) + , mIsCopy(true) + , mPointPartitioner(other.mPointPartitioner) + { + mGrid->newTree(); + } + + virtual ~Raster() + { + // Copy-constructed Rasters own temporary grids that have to be deleted, + // while the original has ownership of the bucket array. + if (mIsCopy) { + delete mGrid; + } else { + delete mPointPartitioner; + } + } + + void rasterizeSpheres() + { + mMinCount = mMaxCount = 0; + if (mParent.mInterrupter) { + mParent.mInterrupter->start("Rasterizing particles to level set using spheres"); + } + mTask = std::bind(&Raster::rasterSpheres, std::placeholders::_1, std::placeholders::_2); + this->cook(); + if (mParent.mInterrupter) mParent.mInterrupter->end(); + } + + void rasterizeSpheres(Real radius) + { + mMinCount = radius < mParent.mRmin ? mParticles.size() : 0; + mMaxCount = radius > mParent.mRmax ? mParticles.size() : 0; + if (mMinCount>0 || mMaxCount>0) {//skipping all particles! + mParent.mMinCount = mMinCount; + mParent.mMaxCount = mMaxCount; + } else { + if (mParent.mInterrupter) { + mParent.mInterrupter->start( + "Rasterizing particles to level set using const spheres"); + } + mTask = std::bind(&Raster::rasterFixedSpheres, + std::placeholders::_1, std::placeholders::_2, radius); + this->cook(); + if (mParent.mInterrupter) mParent.mInterrupter->end(); + } + } + + void rasterizeTrails(Real delta=1.0) + { + mMinCount = mMaxCount = 0; + if (mParent.mInterrupter) { + mParent.mInterrupter->start("Rasterizing particles to level set using trails"); + } + mTask = std::bind(&Raster::rasterTrails, + std::placeholders::_1, std::placeholders::_2, delta); + this->cook(); + if (mParent.mInterrupter) mParent.mInterrupter->end(); + } + + /// @brief Kick off the optionally multithreaded computation. + void operator()(const tbb::blocked_range& r) + { + assert(mTask); + mTask(this, r); + mParent.mMinCount = mMinCount; + mParent.mMaxCount = mMaxCount; + } + + /// @brief Required by tbb::parallel_reduce + void join(Raster& other) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (OutputIsMask) { + if (DoAttrXfer) { + tools::compMax(*mGrid, *other.mGrid); + } else { + mGrid->topologyUnion(*other.mGrid); + } + } else { + tools::csgUnion(*mGrid, *other.mGrid, /*prune=*/true); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + mMinCount += other.mMinCount; + mMaxCount += other.mMaxCount; + } + +private: + /// Disallow assignment since some of the members are references + Raster& operator=(const Raster&) { return *this; } + + /// @return true if the particle is too small or too large + bool ignoreParticle(Real R) + { + if (R < mParent.mRmin) {// below the cutoff radius + ++mMinCount; + return true; + } + if (R > mParent.mRmax) {// above the cutoff radius + ++mMaxCount; + return true; + } + return false; + } + + /// @brief Threaded rasterization of particles as spheres with variable radius + /// @param r range of indices into the list of particles + void rasterSpheres(const tbb::blocked_range& r) + { + AccessorT acc = mGrid->getAccessor(); // local accessor + bool run = true; + const Real invDx = 1 / mParent.mDx; + AttT att; + Vec3R pos; + Real rad; + + // Loop over buckets + for (size_t n = r.begin(), N = r.end(); n < N; ++n) { + // Loop over particles in bucket n. + typename PointPartitionerT::IndexIterator iter = mPointPartitioner->indices(n); + for ( ; run && iter; ++iter) { + const Index32& id = *iter; + mParticles.getPosRad(id, pos, rad); + const Real R = invDx * rad;// in voxel units + if (this->ignoreParticle(R)) continue; + const Vec3R P = mMap.applyInverseMap(pos); + this->getAtt(id, att); + run = this->makeSphere(P, R, att, acc); + }//end loop over particles + }//end loop over buckets + } + + /// @brief Threaded rasterization of particles as spheres with a fixed radius + /// @param r range of indices into the list of particles + /// @param R radius of fixed-size spheres + void rasterFixedSpheres(const tbb::blocked_range& r, Real R) + { + AccessorT acc = mGrid->getAccessor(); // local accessor + AttT att; + Vec3R pos; + + // Loop over buckets + for (size_t n = r.begin(), N = r.end(); n < N; ++n) { + // Loop over particles in bucket n. + for (auto iter = mPointPartitioner->indices(n); iter; ++iter) { + const Index32& id = *iter; + this->getAtt(id, att); + mParticles.getPos(id, pos); + const Vec3R P = mMap.applyInverseMap(pos); + this->makeSphere(P, R, att, acc); + } + } + } + + /// @brief Threaded rasterization of particles as spheres with velocity trails + /// @param r range of indices into the list of particles + /// @param delta inter-sphere spacing + void rasterTrails(const tbb::blocked_range& r, Real delta) + { + AccessorT acc = mGrid->getAccessor(); // local accessor + bool run = true; + AttT att; + Vec3R pos, vel; + Real rad; + const Vec3R origin = mMap.applyInverseMap(Vec3R(0,0,0)); + const Real Rmin = mParent.mRmin, invDx = 1 / mParent.mDx; + + // Loop over buckets + for (size_t n = r.begin(), N = r.end(); n < N; ++n) { + // Loop over particles in bucket n. + typename PointPartitionerT::IndexIterator iter = mPointPartitioner->indices(n); + for ( ; run && iter; ++iter) { + const Index32& id = *iter; + mParticles.getPosRadVel(id, pos, rad, vel); + const Real R0 = invDx * rad; + if (this->ignoreParticle(R0)) continue; + this->getAtt(id, att); + const Vec3R P0 = mMap.applyInverseMap(pos); + const Vec3R V = mMap.applyInverseMap(vel) - origin; // exclude translation + const Real speed = V.length(), invSpeed = 1.0 / speed; + const Vec3R Nrml = -V * invSpeed; // inverse normalized direction + Vec3R P = P0; // local position of instance + Real R = R0, d = 0; // local radius and length of trail + for (size_t m = 0; run && d <= speed ; ++m) { + run = this->makeSphere(P, R, att, acc); + P += 0.5 * delta * R * Nrml; // adaptive offset along inverse velocity direction + d = (P - P0).length(); // current length of trail + R = R0 - (R0 - Rmin) * d * invSpeed; // R = R0 -> mRmin(e.g. 1.5) + }//end loop over sphere instances + }//end loop over particles + }//end loop over buckets + } + + void cook() + { + // parallelize over the point buckets + const Index32 bucketCount = Index32(mPointPartitioner->size()); + + if (mParent.mGrainSize>0) { + tbb::parallel_reduce( + tbb::blocked_range(0, bucketCount, mParent.mGrainSize), *this); + } else { + (*this)(tbb::blocked_range(0, bucketCount)); + } + } + + /// @brief Rasterize sphere at position P and radius R. + /// @return @c false if rasterization was interrupted + /// + /// @param P coordinates of the particle position in voxel units + /// @param R radius of particle in voxel units + /// @param att + /// @param acc grid accessor with a private copy of the grid + bool makeSphere(const Vec3R& P, Real R, const AttT& att, AccessorT& acc) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (OutputIsMask) { + return makeSphereMask(P, R, att, acc); + } else { + return makeNarrowBandSphere(P, R, att, acc); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + /// @brief Rasterize sphere at position P and radius R into + /// a narrow-band level set with half-width, mHalfWidth. + /// @return @c false if rasterization was interrupted + /// + /// @param P coordinates of the particle position in voxel units + /// @param R radius of particle in voxel units + /// @param att an optional user-defined attribute value to be associated with voxels + /// @param acc grid accessor with a private copy of the grid + /// + /// @note For best performance all computations are performed in voxel space, + /// with the important exception of the final level set value that is converted + /// to world units (the grid stores the closest Euclidean signed distances + /// measured in world units). Also note we use the convention of positive distances + /// outside the surface and negative distances inside the surface. + bool makeNarrowBandSphere(const Vec3R& P, Real R, const AttT& att, AccessorT& acc) + { + const Real + dx = mParent.mDx, + w = mParent.mHalfWidth, + max = R + w, // maximum distance in voxel units + max2 = math::Pow2(max), // square of maximum distance in voxel units + min2 = math::Pow2(math::Max(Real(0), R - w)); // square of minimum distance + // Bounding box of the sphere + const Coord + lo(math::Floor(P[0]-max),math::Floor(P[1]-max),math::Floor(P[2]-max)), + hi(math::Ceil( P[0]+max),math::Ceil( P[1]+max),math::Ceil( P[2]+max)); + const ValueT inside = -mGrid->background(); + + ValueT v; + size_t count = 0; + for (Coord c = lo; c.x() <= hi.x(); ++c.x()) { + //only check interrupter every 32'th scan in x + if (!(count++ & ((1<<5)-1)) && util::wasInterrupted(mParent.mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return false; + } + const Real x2 = math::Pow2(c.x() - P[0]); + for (c.y() = lo.y(); c.y() <= hi.y(); ++c.y()) { + const Real x2y2 = x2 + math::Pow2(c.y() - P[1]); + for (c.z() = lo.z(); c.z() <= hi.z(); ++c.z()) { + const Real x2y2z2 = x2y2 + math::Pow2(c.z()-P[2]); // squared dist from c to P +#if defined __INTEL_COMPILER + _Pragma("warning (push)") + _Pragma("warning (disable:186)") // "pointless comparison of unsigned integer with zero" +#endif + if (x2y2z2 >= max2 || (!acc.probeValue(c, v) && (v < ValueT(0)))) + continue;//outside narrow band of the particle or inside existing level set +#if defined __INTEL_COMPILER + _Pragma("warning (pop)") +#endif + if (x2y2z2 <= min2) {//inside narrow band of the particle. + acc.setValueOff(c, inside); + continue; + } + // convert signed distance from voxel units to world units + //const ValueT d=dx*(math::Sqrt(x2y2z2) - R); + const ValueT d = Merge(static_cast(dx*(math::Sqrt(x2y2z2)-R)), att); + if (d < v) acc.setValue(c, d);//CSG union + }//end loop over z + }//end loop over y + }//end loop over x + return true; + } + + /// @brief Rasterize a sphere of radius @a r at position @a p into a boolean mask grid. + /// @return @c false if rasterization was interrupted + bool makeSphereMask(const Vec3R& p, Real r, const AttT& att, AccessorT& acc) + { + const Real + rSquared = r * r, // sphere radius squared, in voxel units + inW = r / math::Sqrt(6.0); // half the width in voxel units of an inscribed cube + const Coord + // Bounding box of the sphere + outLo(math::Floor(p[0] - r), math::Floor(p[1] - r), math::Floor(p[2] - r)), + outHi(math::Ceil(p[0] + r), math::Ceil(p[1] + r), math::Ceil(p[2] + r)), + // Bounds of the inscribed cube + inLo(math::Ceil(p[0] - inW), math::Ceil(p[1] - inW), math::Ceil(p[2] - inW)), + inHi(math::Floor(p[0] + inW), math::Floor(p[1] + inW), math::Floor(p[2] + inW)); + // Bounding boxes of regions comprising out - in + /// @todo These could be divided further into sparsely- and densely-filled subregions. + const std::vector padding{ + CoordBBox(outLo.x(), outLo.y(), outLo.z(), inLo.x()-1, outHi.y(), outHi.z()), + CoordBBox(inHi.x()+1, outLo.y(), outLo.z(), outHi.x(), outHi.y(), outHi.z()), + CoordBBox(outLo.x(), outLo.y(), outLo.z(), outHi.x(), inLo.y()-1, outHi.z()), + CoordBBox(outLo.x(), inHi.y()+1, outLo.z(), outHi.x(), outHi.y(), outHi.z()), + CoordBBox(outLo.x(), outLo.y(), outLo.z(), outHi.x(), outHi.y(), inLo.z()-1), + CoordBBox(outLo.x(), outLo.y(), inHi.z()+1, outHi.x(), outHi.y(), outHi.z()), + }; + const ValueT onValue = Merge(SdfT(1), att); + + // Sparsely fill the inscribed cube. + /// @todo Use sparse fill only if 2r > leaf width? + acc.tree().sparseFill(CoordBBox(inLo, inHi), onValue); + + // Densely fill the remaining regions. + for (const auto& bbox: padding) { + if (util::wasInterrupted(mParent.mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return false; + } + const Coord &bmin = bbox.min(), &bmax = bbox.max(); + Coord c; + Real cx, cy, cz; + for (c = bmin, cx = c.x(); c.x() <= bmax.x(); ++c.x(), cx += 1) { + const Real x2 = math::Pow2(cx - p[0]); + for (c.y() = bmin.y(), cy = c.y(); c.y() <= bmax.y(); ++c.y(), cy += 1) { + const Real x2y2 = x2 + math::Pow2(cy - p[1]); + for (c.z() = bmin.z(), cz = c.z(); c.z() <= bmax.z(); ++c.z(), cz += 1) { + const Real x2y2z2 = x2y2 + math::Pow2(cz - p[2]); + if (x2y2z2 < rSquared) { + acc.setValue(c, onValue); + } + } + } + } + } + return true; + } + + using FuncType = typename std::function&)>; + + template + typename std::enable_if::type + getAtt(size_t, AttT&) const {} + + template + typename std::enable_if::type + getAtt(size_t n, AttT& a) const { mParticles.getAtt(n, a); } + + template + typename std::enable_if::value, ValueT>::type + Merge(T s, const AttT&) const { return s; } + + template + typename std::enable_if::value, ValueT>::type + Merge(T s, const AttT& a) const { return ValueT(s,a); } + + ParticlesToLevelSetT& mParent; + const ParticleListT& mParticles;//list of particles + GridT* mGrid; + const math::MapBase& mMap; + size_t mMinCount, mMaxCount;//counters for ignored particles! + FuncType mTask; + const bool mIsCopy; + PointPartitionerT* mPointPartitioner; +}; // struct ParticlesToLevelSet::Raster + + +///////////////////// YOU CAN SAFELY IGNORE THIS SECTION ///////////////////// + + +namespace p2ls_internal { + +// This is a simple type that combines a distance value and a particle +// attribute. It's required for attribute transfer which is defined in the +// Raster class above. +/// @private +template +class BlindData +{ +public: + using type = VisibleT; + using VisibleType = VisibleT; + using BlindType = BlindT; + + BlindData() {} + explicit BlindData(VisibleT v) : mVisible(v), mBlind(zeroVal()) {} + BlindData(VisibleT v, BlindT b) : mVisible(v), mBlind(b) {} + BlindData(const BlindData&) = default; + BlindData& operator=(const BlindData&) = default; + const VisibleT& visible() const { return mVisible; } + const BlindT& blind() const { return mBlind; } + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + bool operator==(const BlindData& rhs) const { return mVisible == rhs.mVisible; } + OPENVDB_NO_FP_EQUALITY_WARNING_END + bool operator< (const BlindData& rhs) const { return mVisible < rhs.mVisible; } + bool operator> (const BlindData& rhs) const { return mVisible > rhs.mVisible; } + BlindData operator+(const BlindData& rhs) const { return BlindData(mVisible + rhs.mVisible); } + BlindData operator-(const BlindData& rhs) const { return BlindData(mVisible - rhs.mVisible); } + BlindData operator-() const { return BlindData(-mVisible, mBlind); } + +protected: + VisibleT mVisible; + BlindT mBlind; +}; + +/// @private +// Required by several of the tree nodes +template +inline std::ostream& operator<<(std::ostream& ostr, const BlindData& rhs) +{ + ostr << rhs.visible(); + return ostr; +} + +/// @private +// Required by math::Abs +template +inline BlindData Abs(const BlindData& x) +{ + return BlindData(math::Abs(x.visible()), x.blind()); +} + +/// @private +// Required to support the (zeroVal() + val) idiom. +template +inline BlindData +operator+(const BlindData& x, const T& rhs) +{ + return BlindData(x.visible() + static_cast(rhs), x.blind()); +} + +} // namespace p2ls_internal + + +////////////////////////////////////////////////////////////////////////////// + + +// The following are convenience functions for common use cases. + +template +inline void +particlesToSdf(const ParticleListT& plist, GridT& grid, InterrupterT* interrupt) +{ + static_assert(std::is_floating_point::value, + "particlesToSdf requires an SDF grid with floating-point values"); + + if (grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_LOG_WARN("particlesToSdf requires a level set grid;" + " try Grid::setGridClass(openvdb::GRID_LEVEL_SET)"); + } + + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeSpheres(plist); + tools::pruneLevelSet(grid.tree()); +} + +template +inline void +particlesToSdf(const ParticleListT& plist, GridT& grid, Real radius, InterrupterT* interrupt) +{ + static_assert(std::is_floating_point::value, + "particlesToSdf requires an SDF grid with floating-point values"); + + if (grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_LOG_WARN("particlesToSdf requires a level set grid;" + " try Grid::setGridClass(openvdb::GRID_LEVEL_SET)"); + } + + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeSpheres(plist, radius); + tools::pruneLevelSet(grid.tree()); +} + +template +inline void +particleTrailsToSdf(const ParticleListT& plist, GridT& grid, Real delta, InterrupterT* interrupt) +{ + static_assert(std::is_floating_point::value, + "particleTrailsToSdf requires an SDF grid with floating-point values"); + + if (grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_LOG_WARN("particlesToSdf requires a level set grid;" + " try Grid::setGridClass(openvdb::GRID_LEVEL_SET)"); + } + + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeTrails(plist, delta); + tools::pruneLevelSet(grid.tree()); +} + +template +inline void +particlesToMask(const ParticleListT& plist, GridT& grid, InterrupterT* interrupt) +{ + static_assert(std::is_same::value, + "particlesToMask requires a boolean-valued grid"); + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeSpheres(plist); + tools::prune(grid.tree()); +} + +template +inline void +particlesToMask(const ParticleListT& plist, GridT& grid, Real radius, InterrupterT* interrupt) +{ + static_assert(std::is_same::value, + "particlesToMask requires a boolean-valued grid"); + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeSpheres(plist, radius); + tools::prune(grid.tree()); +} + +template +inline void +particleTrailsToMask(const ParticleListT& plist, GridT& grid, Real delta, InterrupterT* interrupt) +{ + static_assert(std::is_same::value, + "particleTrailsToMask requires a boolean-valued grid"); + ParticlesToLevelSet p2ls(grid, interrupt); + p2ls.rasterizeTrails(plist, delta); + tools::prune(grid.tree()); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_PARTICLES_TO_LEVELSET_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PointAdvect.h b/openvdb/tools/PointAdvect.h new file mode 100644 index 00000000..12b1177a --- /dev/null +++ b/openvdb/tools/PointAdvect.h @@ -0,0 +1,393 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth, D.J. Hill (openvdb port, added staggered grid support) +/// +/// @file tools/PointAdvect.h +/// +/// @brief Class PointAdvect advects points (with position) in a static velocity field + +#ifndef OPENVDB_TOOLS_POINT_ADVECT_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POINT_ADVECT_HAS_BEEN_INCLUDED + +#include +#include // min +#include // Vec3 types and version number +#include // grid +#include +#include "Interpolation.h" // sampling +#include "VelocityFields.h" // VelocityIntegrator +#include // threading +#include // threading +#include // for cancel +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// Class that holds a Vec3 grid, to be interpreted as the closest point to a constraint +/// surface. Supports a method to allow a point to be projected onto the closest point +/// on the constraint surface. Uses Caching. +template +class ClosestPointProjector +{ +public: + using CptGridType = CptGridT; + using CptAccessor = typename CptGridType::ConstAccessor; + using CptValueType = typename CptGridType::ValueType; + + ClosestPointProjector(): + mCptIterations(0) + { + } + ClosestPointProjector(const CptGridType& cptGrid, int n): + mCptGrid(&cptGrid), + mCptAccessor(cptGrid.getAccessor()), + mCptIterations(n) + { + } + ClosestPointProjector(const ClosestPointProjector &other): + mCptGrid(other.mCptGrid), + mCptAccessor(mCptGrid->getAccessor()), + mCptIterations(other.mCptIterations) + { + } + void setConstraintIterations(unsigned int cptIterations) { mCptIterations = cptIterations; } + unsigned int numIterations() { return mCptIterations; } + + // point constraint + template + inline void projectToConstraintSurface(LocationType& W) const + { + /// Entries in the CPT tree are the closest point to the constraint surface. + /// The interpolation step in sample introduces error so that the result + /// of a single sample may not lie exactly on the surface. The iterations + /// in the loop exist to minimize this error. + CptValueType result(W[0], W[1],W[2]); + for (unsigned int i = 0; i < mCptIterations; ++i) { + const Vec3R location = mCptGrid->worldToIndex(Vec3R(result[0], result[1], result[2])); + BoxSampler::sample(mCptAccessor, location, result); + } + W[0] = result[0]; + W[1] = result[1]; + W[2] = result[2]; + } + +private: + const CptGridType* mCptGrid; // Closest-Point-Transform vector field + CptAccessor mCptAccessor; + unsigned int mCptIterations; +};// end of ClosestPointProjector class + +//////////////////////////////////////// + + +/// Performs passive or constrained advection of points in a velocity field +/// represented by an OpenVDB grid and an optional closest-point-transform (CPT) +/// represented in another OpenVDB grid. Note the CPT is assumed to be +/// in world coordinates and NOT index coordinates! +/// Supports both collocated velocity grids and staggered velocity grids +/// +/// The @c PointListT template argument refers to any class with the following +/// interface (e.g., std::vector): +/// @code +/// class PointList { +/// ... +/// public: +/// using value_type = internal_vector3_type; // must support [] component access +/// openvdb::Index size() const; // number of points in list +/// value_type& operator[](int n); // world space position of nth point +/// }; +/// @endcode +/// +/// @note All methods (except size) are assumed to be thread-safe and +/// the positions are returned as non-const references since the +/// advection method needs to modify them! +template, + bool StaggeredVelocity = false, + typename InterrupterType = util::NullInterrupter> +class PointAdvect +{ +public: + using GridType = GridT; + using PointListType = PointListT; + using LocationType = typename PointListT::value_type; + using VelocityFieldIntegrator = VelocityIntegrator; + + PointAdvect(const GridT& velGrid, InterrupterType* interrupter = nullptr): + mVelGrid(&velGrid), + mPoints(nullptr), + mIntegrationOrder(1), + mThreaded(true), + mInterrupter(interrupter) + { + } + PointAdvect(const PointAdvect &other) : + mVelGrid(other.mVelGrid), + mPoints(other.mPoints), + mDt(other.mDt), + mAdvIterations(other.mAdvIterations), + mIntegrationOrder(other.mIntegrationOrder), + mThreaded(other.mThreaded), + mInterrupter(other.mInterrupter) + { + } + virtual ~PointAdvect() + { + } + /// If the order of the integration is set to zero no advection is performed + bool earlyOut() const { return (mIntegrationOrder==0);} + /// get & set + void setThreaded(bool threaded) { mThreaded = threaded; } + bool getThreaded() { return mThreaded; } + void setIntegrationOrder(unsigned int order) {mIntegrationOrder = order;} + + /// Constrained advection of a list of points over a time = dt * advIterations + void advect(PointListT& points, float dt, unsigned int advIterations = 1) + { + if (this->earlyOut()) return; // nothing to do! + mPoints = &points; + mDt = dt; + mAdvIterations = advIterations; + + if (mInterrupter) mInterrupter->start("Advecting points by OpenVDB velocity field: "); + if (mThreaded) { + tbb::parallel_for(tbb::blocked_range(0, mPoints->size()), *this); + } else { + (*this)(tbb::blocked_range(0, mPoints->size())); + } + if (mInterrupter) mInterrupter->end(); + } + + /// Never call this method directly - it is use by TBB and has to be public! + void operator() (const tbb::blocked_range &range) const + { + if (mInterrupter && mInterrupter->wasInterrupted()) { + tbb::task::self().cancel_group_execution(); + } + + VelocityFieldIntegrator velField(*mVelGrid); + switch (mIntegrationOrder) { + case 1: + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + // loop over number of time steps + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<1>(mDt, X0); + } + } + } + break; + case 2: + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + // loop over number of time steps + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<2>(mDt, X0); + } + } + } + break; + case 3: + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + // loop over number of time steps + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<3>(mDt, X0); + } + } + } + break; + case 4: + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + // loop over number of time steps + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<4>(mDt, X0); + } + } + } + break; + } + } + +private: + // the velocity field + const GridType* mVelGrid; + + // vertex list of all the points + PointListT* mPoints; + + // time integration parameters + float mDt; // time step + unsigned int mAdvIterations; // number of time steps + unsigned int mIntegrationOrder; + + // operational parameters + bool mThreaded; + InterrupterType* mInterrupter; + +};//end of PointAdvect class + + +template, + bool StaggeredVelocity = false, + typename CptGridType = GridT, + typename InterrupterType = util::NullInterrupter> +class ConstrainedPointAdvect +{ +public: + using GridType = GridT; + using LocationType = typename PointListT::value_type; + using VelocityIntegratorType = VelocityIntegrator; + using ClosestPointProjectorType = ClosestPointProjector; + using PointListType = PointListT; + + ConstrainedPointAdvect(const GridType& velGrid, + const GridType& cptGrid, int cptn, InterrupterType* interrupter = nullptr): + mVelGrid(&velGrid), + mCptGrid(&cptGrid), + mCptIter(cptn), + mInterrupter(interrupter) + { + } + ConstrainedPointAdvect(const ConstrainedPointAdvect& other): + mVelGrid(other.mVelGrid), + mCptGrid(other.mCptGrid), + mCptIter(other.mCptIter), + mPoints(other.mPoints), + mDt(other.mDt), + mAdvIterations(other.mAdvIterations), + mIntegrationOrder(other.mIntegrationOrder), + mThreaded(other.mThreaded), + mInterrupter(other.mInterrupter) + { + } + virtual ~ConstrainedPointAdvect(){} + + void setConstraintIterations(unsigned int cptIter) {mCptIter = cptIter;} + void setIntegrationOrder(unsigned int order) {mIntegrationOrder = order;} + + void setThreaded(bool threaded) { mThreaded = threaded; } + bool getThreaded() { return mThreaded; } + + /// Constrained Advection a list of points over a time = dt * advIterations + void advect(PointListT& points, float dt, unsigned int advIterations = 1) + { + mPoints = &points; + mDt = dt; + + if (mIntegrationOrder==0 && mCptIter == 0) { + return; // nothing to do! + } + (mIntegrationOrder>0) ? mAdvIterations = advIterations : mAdvIterations = 1; + + if (mInterrupter) mInterrupter->start("Advecting points by OpenVDB velocity field: "); + const size_t N = mPoints->size(); + + if (mThreaded) { + tbb::parallel_for(tbb::blocked_range(0, N), *this); + } else { + (*this)(tbb::blocked_range(0, N)); + } + if (mInterrupter) mInterrupter->end(); + } + + + /// Never call this method directly - it is use by TBB and has to be public! + void operator() (const tbb::blocked_range &range) const + { + if (mInterrupter && mInterrupter->wasInterrupted()) { + tbb::task::self().cancel_group_execution(); + } + + VelocityIntegratorType velField(*mVelGrid); + ClosestPointProjectorType cptField(*mCptGrid, mCptIter); + switch (mIntegrationOrder) { + case 0://pure CPT projection + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + for (unsigned int i = 0; i < mAdvIterations; ++i) { + cptField.projectToConstraintSurface(X0); + } + } + } + break; + case 1://1'th order advection and CPT projection + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<1>(mDt, X0); + cptField.projectToConstraintSurface(X0); + } + } + } + break; + case 2://2'nd order advection and CPT projection + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<2>(mDt, X0); + cptField.projectToConstraintSurface(X0); + } + } + } + break; + + case 3://3'rd order advection and CPT projection + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<3>(mDt, X0); + cptField.projectToConstraintSurface(X0); + } + } + } + break; + case 4://4'th order advection and CPT projection + { + for (size_t n = range.begin(); n != range.end(); ++n) { + LocationType& X0 = (*mPoints)[n]; + for (unsigned int i = 0; i < mAdvIterations; ++i) { + velField.template rungeKutta<4>(mDt, X0); + cptField.projectToConstraintSurface(X0); + } + } + } + break; + } + } + +private: + const GridType* mVelGrid; // the velocity field + const GridType* mCptGrid; + int mCptIter; + PointListT* mPoints; // vertex list of all the points + + // time integration parameters + float mDt; // time step + unsigned int mAdvIterations; // number of time steps + unsigned int mIntegrationOrder; // order of Runge-Kutta integration + // operational parameters + bool mThreaded; + InterrupterType* mInterrupter; +};// end of ConstrainedPointAdvect class + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POINT_ADVECT_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PointIndexGrid.h b/openvdb/tools/PointIndexGrid.h new file mode 100644 index 00000000..a2e2a7c4 --- /dev/null +++ b/openvdb/tools/PointIndexGrid.h @@ -0,0 +1,1807 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file PointIndexGrid.h +/// +/// @brief Space-partitioning acceleration structure for points. Partitions +/// the points into voxels to accelerate range and nearest neighbor +/// searches. +/// +/// @note Leaf nodes store a single point-index array and the voxels are only +/// integer offsets into that array. The actual points are never stored +/// in the acceleration structure, only offsets into an external array. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_POINT_INDEX_GRID_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POINT_INDEX_GRID_HAS_BEEN_INCLUDED + +#include "PointPartitioner.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include // for std::min(), std::max() +#include // for std::sqrt() +#include +#include +#include // for std::is_same +#include // for std::pair +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +namespace tree { +template struct SameLeafConfig; // forward declaration +} + +namespace tools { + +template struct PointIndexLeafNode; // forward declaration + +/// Point index tree configured to match the default OpenVDB tree configuration +using PointIndexTree = tree::Tree, 4>, 5>>>; + +/// Point index grid +using PointIndexGrid = Grid; + + +//////////////////////////////////////// + + +/// @interface PointArray +/// Expected interface for the PointArray container: +/// @code +/// template +/// struct PointArray +/// { +/// // The type used to represent world-space point positions +/// using PosType = VectorType; +/// +/// // Return the number of points in the array +/// size_t size() const; +/// +/// // Return the world-space position of the nth point in the array. +/// void getPos(size_t n, PosType& xyz) const; +/// }; +/// @endcode + + +//////////////////////////////////////// + + +/// @brief Partition points into a point index grid to accelerate range and +/// nearest-neighbor searches. +/// +/// @param points world-space point array conforming to the PointArray interface +/// @param voxelSize voxel size in world units +template +inline typename GridT::Ptr +createPointIndexGrid(const PointArrayT& points, double voxelSize); + + +/// @brief Partition points into a point index grid to accelerate range and +/// nearest-neighbor searches. +/// +/// @param points world-space point array conforming to the PointArray interface +/// @param xform world-to-index-space transform +template +inline typename GridT::Ptr +createPointIndexGrid(const PointArrayT& points, const math::Transform& xform); + + +/// @brief Return @c true if the given point index grid represents a valid partitioning +/// of the given point array. +/// +/// @param points world-space point array conforming to the PointArray interface +/// @param grid point index grid to validate +template +inline bool +isValidPartition(const PointArrayT& points, const GridT& grid); + + +/// Repartition the @a points if needed, otherwise return the input @a grid. +template +inline typename GridT::ConstPtr +getValidPointIndexGrid(const PointArrayT& points, const typename GridT::ConstPtr& grid); + +/// Repartition the @a points if needed, otherwise return the input @a grid. +template +inline typename GridT::Ptr +getValidPointIndexGrid(const PointArrayT& points, const typename GridT::Ptr& grid); + + +//////////////////////////////////////// + + +/// Accelerated range and nearest-neighbor searches for point index grids +template +struct PointIndexIterator +{ + using ConstAccessor = tree::ValueAccessor; + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + + PointIndexIterator(); + PointIndexIterator(const PointIndexIterator& rhs); + PointIndexIterator& operator=(const PointIndexIterator& rhs); + + + /// @brief Construct an iterator over the indices of the points contained in voxel (i, j, k). + /// @param ijk the voxel containing the points over which to iterate + /// @param acc an accessor for the grid or tree that holds the point indices + PointIndexIterator(const Coord& ijk, ConstAccessor& acc); + + + /// @brief Construct an iterator over the indices of the points contained in + /// the given bounding box. + /// @param bbox the bounding box of the voxels containing the points over which to iterate + /// @param acc an accessor for the grid or tree that holds the point indices + /// @note The range of the @a bbox is inclusive. Thus, a bounding box with + /// min = max is not empty but rather encloses a single voxel. + PointIndexIterator(const CoordBBox& bbox, ConstAccessor& acc); + + + /// @brief Clear the iterator and update it with the result of the given voxel query. + /// @param ijk the voxel containing the points over which to iterate + /// @param acc an accessor for the grid or tree that holds the point indices + void searchAndUpdate(const Coord& ijk, ConstAccessor& acc); + + + /// @brief Clear the iterator and update it with the result of the given voxel region query. + /// @param bbox the bounding box of the voxels containing the points over which to iterate + /// @param acc an accessor for the grid or tree that holds the point indices + /// @note The range of the @a bbox is inclusive. Thus, a bounding box with + /// min = max is not empty but rather encloses a single voxel. + void searchAndUpdate(const CoordBBox& bbox, ConstAccessor& acc); + + + /// @brief Clear the iterator and update it with the result of the given + /// index-space bounding box query. + /// @param bbox index-space bounding box + /// @param acc an accessor for the grid or tree that holds the point indices + /// @param points world-space point array conforming to the PointArray interface + /// @param xform linear, uniform-scale transform (i.e., cubical voxels) + template + void searchAndUpdate(const BBoxd& bbox, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform); + + + /// @brief Clear the iterator and update it with the result of the given + /// index-space radial query. + /// @param center index-space center + /// @param radius index-space radius + /// @param acc an accessor for the grid or tree that holds the point indices + /// @param points world-space point array conforming to the PointArray interface + /// @param xform linear, uniform-scale transform (i.e., cubical voxels) + /// @param subvoxelAccuracy if true, check individual points against the search region, + /// otherwise return all points that reside in voxels that are inside + /// or intersect the search region + template + void searchAndUpdate(const Vec3d& center, double radius, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform, bool subvoxelAccuracy = true); + + + /// @brief Clear the iterator and update it with the result of the given + /// world-space bounding box query. + /// @param bbox world-space bounding box + /// @param acc an accessor for the grid or tree that holds the point indices + /// @param points world-space point array conforming to the PointArray interface + /// @param xform linear, uniform-scale transform (i.e., cubical voxels) + template + void worldSpaceSearchAndUpdate(const BBoxd& bbox, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform); + + + /// @brief Clear the iterator and update it with the result of the given + /// world-space radial query. + /// @param center world-space center + /// @param radius world-space radius + /// @param acc an accessor for the grid or tree that holds the point indices + /// @param points world-space point array conforming to the PointArray interface + /// @param xform linear, uniform-scale transform (i.e., cubical voxels) + /// @param subvoxelAccuracy if true, check individual points against the search region, + /// otherwise return all points that reside in voxels that are inside + /// or intersect the search region + template + void worldSpaceSearchAndUpdate(const Vec3d& center, double radius, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform, bool subvoxelAccuracy = true); + + + /// Reset the iterator to point to the first item. + void reset(); + + /// Return a const reference to the item to which this iterator is pointing. + const ValueType& operator*() const { return *mRange.first; } + + /// @{ + /// @brief Return @c true if this iterator is not yet exhausted. + bool test() const { return mRange.first < mRange.second || mIter != mRangeList.end(); } + operator bool() const { return this->test(); } + /// @} + + /// Advance iterator to next item. + void increment(); + + /// Advance iterator to next item. + void operator++() { this->increment(); } + + + /// @brief Advance iterator to next item. + /// @return @c true if this iterator is not yet exhausted. + bool next(); + + /// Return the number of point indices in the iterator range. + size_t size() const; + + /// Return @c true if both iterators point to the same element. + bool operator==(const PointIndexIterator& p) const { return mRange.first == p.mRange.first; } + bool operator!=(const PointIndexIterator& p) const { return !this->operator==(p); } + + +private: + using Range = std::pair; + using RangeDeque = std::deque; + using RangeDequeCIter = typename RangeDeque::const_iterator; + using IndexArray = std::unique_ptr; + + void clear(); + + // Primary index collection + Range mRange; + RangeDeque mRangeList; + RangeDequeCIter mIter; + // Secondary index collection + IndexArray mIndexArray; + size_t mIndexArraySize; +}; // struct PointIndexIterator + + +/// @brief Selectively extract and filter point data using a custom filter operator. +/// +/// @par FilterType example: +/// @interface FilterType +/// @code +/// template +/// struct WeightedAverageAccumulator { +/// using ValueType = T; +/// +/// WeightedAverageAccumulator(T const * const array, const T radius) +/// : mValues(array), mInvRadius(1.0/radius), mWeightSum(0.0), mValueSum(0.0) {} +/// +/// void reset() { mWeightSum = mValueSum = T(0.0); } +/// +/// // the following method is invoked by the PointIndexFilter +/// void operator()(const T distSqr, const size_t pointIndex) { +/// const T weight = T(1.0) - openvdb::math::Sqrt(distSqr) * mInvRadius; +/// mWeightSum += weight; +/// mValueSum += weight * mValues[pointIndex]; +/// } +/// +/// T result() const { return mWeightSum > T(0.0) ? mValueSum / mWeightSum : T(0.0); } +/// +/// private: +/// T const * const mValues; +/// const T mInvRadius; +/// T mWeightSum, mValueSum; +/// }; // struct WeightedAverageAccumulator +/// @endcode +template +struct PointIndexFilter +{ + using PosType = typename PointArray::PosType; + using ScalarType = typename PosType::value_type; + using ConstAccessor = tree::ValueAccessor; + + /// @brief Constructor + /// @param points world-space point array conforming to the PointArray interface + /// @param tree a point index tree + /// @param xform linear, uniform-scale transform (i.e., cubical voxels) + PointIndexFilter(const PointArray& points, const TreeType& tree, const math::Transform& xform); + + /// Thread safe copy constructor + PointIndexFilter(const PointIndexFilter& rhs); + + /// @brief Perform a radial search query and apply the given filter + /// operator to the selected points. + /// @param center world-space center + /// @param radius world-space radius + /// @param op custom filter operator (see the FilterType example for interface details) + template + void searchAndApply(const PosType& center, ScalarType radius, FilterType& op); + +private: + PointArray const * const mPoints; + ConstAccessor mAcc; + const math::Transform mXform; + const ScalarType mInvVoxelSize; + PointIndexIterator mIter; +}; // struct PointIndexFilter + + +//////////////////////////////////////// + +// Internal operators and implementation details + + +namespace point_index_grid_internal { + +template +struct ValidPartitioningOp +{ + ValidPartitioningOp(tbb::atomic& hasChanged, + const PointArrayT& points, const math::Transform& xform) + : mPoints(&points) + , mTransform(&xform) + , mHasChanged(&hasChanged) + { + } + + template + void operator()(LeafT &leaf, size_t /*leafIndex*/) const + { + if ((*mHasChanged)) { + tbb::task::self().cancel_group_execution(); + return; + } + + using IndexArrayT = typename LeafT::IndexArray; + using IndexT = typename IndexArrayT::value_type; + using PosType = typename PointArrayT::PosType; + + typename LeafT::ValueOnCIter iter; + Coord voxelCoord; + PosType point; + + const IndexT + *begin = static_cast(nullptr), + *end = static_cast(nullptr); + + for (iter = leaf.cbeginValueOn(); iter; ++iter) { + + if ((*mHasChanged)) break; + + voxelCoord = iter.getCoord(); + leaf.getIndices(iter.pos(), begin, end); + + while (begin < end) { + + mPoints->getPos(*begin, point); + if (voxelCoord != mTransform->worldToIndexCellCentered(point)) { + mHasChanged->fetch_and_store(true); + break; + } + + ++begin; + } + } + } + +private: + PointArrayT const * const mPoints; + math::Transform const * const mTransform; + tbb::atomic * const mHasChanged; +}; + + +template +struct PopulateLeafNodesOp +{ + using IndexT = uint32_t; + using Partitioner = PointPartitioner; + + PopulateLeafNodesOp(std::unique_ptr& leafNodes, + const Partitioner& partitioner) + : mLeafNodes(leafNodes.get()) + , mPartitioner(&partitioner) + { + } + + void operator()(const tbb::blocked_range& range) const { + + using VoxelOffsetT = typename Partitioner::VoxelOffsetType; + + size_t maxPointCount = 0; + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + maxPointCount = std::max(maxPointCount, mPartitioner->indices(n).size()); + } + + const IndexT voxelCount = LeafNodeT::SIZE; + + // allocate histogram buffers + std::unique_ptr offsets{new VoxelOffsetT[maxPointCount]}; + std::unique_ptr histogram{new IndexT[voxelCount]}; + + VoxelOffsetT const * const voxelOffsets = mPartitioner->voxelOffsets().get(); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + LeafNodeT* node = new LeafNodeT(); + node->setOrigin(mPartitioner->origin(n)); + + typename Partitioner::IndexIterator it = mPartitioner->indices(n); + + const size_t pointCount = it.size(); + IndexT const * const indices = &*it; + + // local copy of voxel offsets. + for (IndexT i = 0; i < pointCount; ++i) { + offsets[i] = voxelOffsets[ indices[i] ]; + } + + // compute voxel-offset histogram + memset(&histogram[0], 0, voxelCount * sizeof(IndexT)); + for (IndexT i = 0; i < pointCount; ++i) { + ++histogram[ offsets[i] ]; + } + + typename LeafNodeT::NodeMaskType& mask = node->getValueMask(); + typename LeafNodeT::Buffer& buffer = node->buffer(); + + // scan histogram (all-prefix-sums) + IndexT count = 0, startOffset; + for (int i = 0; i < int(voxelCount); ++i) { + if (histogram[i] > 0) { + startOffset = count; + count += histogram[i]; + histogram[i] = startOffset; + mask.setOn(i); + } + buffer.setValue(i, count); + } + + // allocate point-index array + node->indices().resize(pointCount); + typename LeafNodeT::ValueType * const orderedIndices = node->indices().data(); + + // rank and permute + for (IndexT i = 0; i < pointCount; ++i) { + orderedIndices[ histogram[ offsets[i] ]++ ] = indices[i]; + } + + mLeafNodes[n] = node; + } + } + + ////////// + + LeafNodeT* * const mLeafNodes; + Partitioner const * const mPartitioner; +}; + + +/// Construct a @c PointIndexTree +template +inline void +constructPointTree(TreeType& tree, const math::Transform& xform, const PointArray& points) +{ + using LeafType = typename TreeType::LeafNodeType; + + std::unique_ptr leafNodes; + size_t leafNodeCount = 0; + + { + // Important: Do not disable the cell-centered transform in the PointPartitioner. + // This interpretation is assumed in the PointIndexGrid and all related + // search algorithms. + PointPartitioner partitioner; + partitioner.construct(points, xform, /*voxelOrder=*/false, /*recordVoxelOffsets=*/true); + + if (!partitioner.usingCellCenteredTransform()) { + OPENVDB_THROW(LookupError, "The PointIndexGrid requires a " + "cell-centered transform."); + } + + leafNodeCount = partitioner.size(); + leafNodes.reset(new LeafType*[leafNodeCount]); + + const tbb::blocked_range range(0, leafNodeCount); + tbb::parallel_for(range, PopulateLeafNodesOp(leafNodes, partitioner)); + } + + tree::ValueAccessor acc(tree); + for (size_t n = 0; n < leafNodeCount; ++n) { + acc.addLeaf(leafNodes[n]); + } +} + + +//////////////////////////////////////// + + +template +inline void +dequeToArray(const std::deque& d, std::unique_ptr& a, size_t& size) +{ + size = d.size(); + a.reset(new T[size]); + typename std::deque::const_iterator it = d.begin(), itEnd = d.end(); + T* item = a.get(); + for ( ; it != itEnd; ++it, ++item) *item = *it; +} + + +inline void +constructExclusiveRegions(std::vector& regions, + const CoordBBox& bbox, const CoordBBox& ibox) +{ + regions.clear(); + regions.reserve(6); + Coord cmin = ibox.min(); + Coord cmax = ibox.max(); + + // left-face bbox + regions.push_back(bbox); + regions.back().max().z() = cmin.z(); + + // right-face bbox + regions.push_back(bbox); + regions.back().min().z() = cmax.z(); + + --cmax.z(); // accounting for cell centered bucketing. + ++cmin.z(); + + // front-face bbox + regions.push_back(bbox); + CoordBBox* lastRegion = ®ions.back(); + lastRegion->min().z() = cmin.z(); + lastRegion->max().z() = cmax.z(); + lastRegion->max().x() = cmin.x(); + + // back-face bbox + regions.push_back(*lastRegion); + lastRegion = ®ions.back(); + lastRegion->min().x() = cmax.x(); + lastRegion->max().x() = bbox.max().x(); + + --cmax.x(); + ++cmin.x(); + + // bottom-face bbox + regions.push_back(*lastRegion); + lastRegion = ®ions.back(); + lastRegion->min().x() = cmin.x(); + lastRegion->max().x() = cmax.x(); + lastRegion->max().y() = cmin.y(); + + // top-face bbox + regions.push_back(*lastRegion); + lastRegion = ®ions.back(); + lastRegion->min().y() = cmax.y(); + lastRegion->max().y() = bbox.max().y(); +} + + +template +struct BBoxFilter +{ + using PosType = typename PointArray::PosType; + using ScalarType = typename PosType::value_type; + using Range = std::pair; + using RangeDeque = std::deque; + using IndexDeque = std::deque; + + BBoxFilter(RangeDeque& ranges, IndexDeque& indices, const BBoxd& bbox, + const PointArray& points, const math::Transform& xform) + : mRanges(ranges) + , mIndices(indices) + , mRegion(bbox) + , mPoints(points) + , mMap(*xform.baseMap()) + { + } + + template + void filterLeafNode(const LeafNodeType& leaf) + { + typename LeafNodeType::ValueOnCIter iter; + const IndexT + *begin = static_cast(nullptr), + *end = static_cast(nullptr); + for (iter = leaf.cbeginValueOn(); iter; ++iter) { + leaf.getIndices(iter.pos(), begin, end); + filterVoxel(iter.getCoord(), begin, end); + } + } + + void filterVoxel(const Coord&, const IndexT* begin, const IndexT* end) + { + PosType vec; + + for (; begin < end; ++begin) { + mPoints.getPos(*begin, vec); + + if (mRegion.isInside(mMap.applyInverseMap(vec))) { + mIndices.push_back(*begin); + } + } + } + +private: + RangeDeque& mRanges; + IndexDeque& mIndices; + const BBoxd mRegion; + const PointArray& mPoints; + const math::MapBase& mMap; +}; + + +template +struct RadialRangeFilter +{ + using PosType = typename PointArray::PosType; + using ScalarType = typename PosType::value_type; + using Range = std::pair; + using RangeDeque = std::deque; + using IndexDeque = std::deque; + + RadialRangeFilter(RangeDeque& ranges, IndexDeque& indices, const Vec3d& xyz, double radius, + const PointArray& points, const math::Transform& xform, + const double leafNodeDim, const bool subvoxelAccuracy) + : mRanges(ranges) + , mIndices(indices) + , mCenter(xyz) + , mWSCenter(xform.indexToWorld(xyz)) + , mVoxelDist1(ScalarType(0.0)) + , mVoxelDist2(ScalarType(0.0)) + , mLeafNodeDist1(ScalarType(0.0)) + , mLeafNodeDist2(ScalarType(0.0)) + , mWSRadiusSqr(ScalarType(radius * xform.voxelSize()[0])) + , mPoints(points) + , mSubvoxelAccuracy(subvoxelAccuracy) + { + const ScalarType voxelRadius = ScalarType(std::sqrt(3.0) * 0.5); + mVoxelDist1 = voxelRadius + ScalarType(radius); + mVoxelDist1 *= mVoxelDist1; + + if (radius > voxelRadius) { + mVoxelDist2 = ScalarType(radius) - voxelRadius; + mVoxelDist2 *= mVoxelDist2; + } + + const ScalarType leafNodeRadius = ScalarType(leafNodeDim * std::sqrt(3.0) * 0.5); + mLeafNodeDist1 = leafNodeRadius + ScalarType(radius); + mLeafNodeDist1 *= mLeafNodeDist1; + + if (radius > leafNodeRadius) { + mLeafNodeDist2 = ScalarType(radius) - leafNodeRadius; + mLeafNodeDist2 *= mLeafNodeDist2; + } + + mWSRadiusSqr *= mWSRadiusSqr; + } + + template + void filterLeafNode(const LeafNodeType& leaf) + { + { + const Coord& ijk = leaf.origin(); + PosType vec; + vec[0] = ScalarType(ijk[0]); + vec[1] = ScalarType(ijk[1]); + vec[2] = ScalarType(ijk[2]); + vec += ScalarType(LeafNodeType::DIM - 1) * 0.5; + vec -= mCenter; + + const ScalarType dist = vec.lengthSqr(); + if (dist > mLeafNodeDist1) return; + + if (mLeafNodeDist2 > 0.0 && dist < mLeafNodeDist2) { + const IndexT* begin = &leaf.indices().front(); + mRanges.push_back(Range(begin, begin + leaf.indices().size())); + return; + } + } + + typename LeafNodeType::ValueOnCIter iter; + const IndexT + *begin = static_cast(nullptr), + *end = static_cast(nullptr); + for (iter = leaf.cbeginValueOn(); iter; ++iter) { + leaf.getIndices(iter.pos(), begin, end); + filterVoxel(iter.getCoord(), begin, end); + } + } + + void filterVoxel(const Coord& ijk, const IndexT* begin, const IndexT* end) + { + PosType vec; + + { + vec[0] = mCenter[0] - ScalarType(ijk[0]); + vec[1] = mCenter[1] - ScalarType(ijk[1]); + vec[2] = mCenter[2] - ScalarType(ijk[2]); + + const ScalarType dist = vec.lengthSqr(); + if (dist > mVoxelDist1) return; + + if (!mSubvoxelAccuracy || (mVoxelDist2 > 0.0 && dist < mVoxelDist2)) { + if (!mRanges.empty() && mRanges.back().second == begin) { + mRanges.back().second = end; + } else { + mRanges.push_back(Range(begin, end)); + } + return; + } + } + + + while (begin < end) { + mPoints.getPos(*begin, vec); + vec = mWSCenter - vec; + + if (vec.lengthSqr() < mWSRadiusSqr) { + mIndices.push_back(*begin); + } + ++begin; + } + } + +private: + RangeDeque& mRanges; + IndexDeque& mIndices; + const PosType mCenter, mWSCenter; + ScalarType mVoxelDist1, mVoxelDist2, mLeafNodeDist1, mLeafNodeDist2, mWSRadiusSqr; + const PointArray& mPoints; + const bool mSubvoxelAccuracy; +}; // struct RadialRangeFilter + + +//////////////////////////////////////// + + +template +inline void +filteredPointIndexSearchVoxels(RangeFilterType& filter, + const LeafNodeType& leaf, const Coord& min, const Coord& max) +{ + using PointIndexT = typename LeafNodeType::ValueType; + Index xPos(0), yPos(0), pos(0); + Coord ijk(0); + + const PointIndexT* dataPtr = &leaf.indices().front(); + PointIndexT beginOffset, endOffset; + + for (ijk[0] = min[0]; ijk[0] <= max[0]; ++ijk[0]) { + xPos = (ijk[0] & (LeafNodeType::DIM - 1u)) << (2 * LeafNodeType::LOG2DIM); + for (ijk[1] = min[1]; ijk[1] <= max[1]; ++ijk[1]) { + yPos = xPos + ((ijk[1] & (LeafNodeType::DIM - 1u)) << LeafNodeType::LOG2DIM); + for (ijk[2] = min[2]; ijk[2] <= max[2]; ++ijk[2]) { + pos = yPos + (ijk[2] & (LeafNodeType::DIM - 1u)); + + beginOffset = (pos == 0 ? PointIndexT(0) : leaf.getValue(pos - 1)); + endOffset = leaf.getValue(pos); + + if (endOffset > beginOffset) { + filter.filterVoxel(ijk, dataPtr + beginOffset, dataPtr + endOffset); + } + } + } + } +} + + +template +inline void +filteredPointIndexSearch(RangeFilterType& filter, ConstAccessor& acc, const CoordBBox& bbox) +{ + using LeafNodeType = typename ConstAccessor::TreeType::LeafNodeType; + Coord ijk(0), ijkMax(0), ijkA(0), ijkB(0); + const Coord leafMin = bbox.min() & ~(LeafNodeType::DIM - 1); + const Coord leafMax = bbox.max() & ~(LeafNodeType::DIM - 1); + + for (ijk[0] = leafMin[0]; ijk[0] <= leafMax[0]; ijk[0] += LeafNodeType::DIM) { + for (ijk[1] = leafMin[1]; ijk[1] <= leafMax[1]; ijk[1] += LeafNodeType::DIM) { + for (ijk[2] = leafMin[2]; ijk[2] <= leafMax[2]; ijk[2] += LeafNodeType::DIM) { + + if (const LeafNodeType* leaf = acc.probeConstLeaf(ijk)) { + ijkMax = ijk; + ijkMax.offset(LeafNodeType::DIM - 1); + + // intersect leaf bbox with search region. + ijkA = Coord::maxComponent(bbox.min(), ijk); + ijkB = Coord::minComponent(bbox.max(), ijkMax); + + if (ijkA != ijk || ijkB != ijkMax) { + filteredPointIndexSearchVoxels(filter, *leaf, ijkA, ijkB); + } else { // leaf bbox is inside the search region + filter.filterLeafNode(*leaf); + } + } + } + } + } +} + + +//////////////////////////////////////// + + +template +inline void +pointIndexSearchVoxels(RangeDeque& rangeList, + const LeafNodeType& leaf, const Coord& min, const Coord& max) +{ + using PointIndexT = typename LeafNodeType::ValueType; + using IntT = typename PointIndexT::IntType; + using Range = typename RangeDeque::value_type; + + Index xPos(0), pos(0), zStride = Index(max[2] - min[2]); + const PointIndexT* dataPtr = &leaf.indices().front(); + PointIndexT beginOffset(0), endOffset(0), + previousOffset(static_cast(leaf.indices().size() + 1u)); + Coord ijk(0); + + for (ijk[0] = min[0]; ijk[0] <= max[0]; ++ijk[0]) { + xPos = (ijk[0] & (LeafNodeType::DIM - 1u)) << (2 * LeafNodeType::LOG2DIM); + + for (ijk[1] = min[1]; ijk[1] <= max[1]; ++ijk[1]) { + pos = xPos + ((ijk[1] & (LeafNodeType::DIM - 1u)) << LeafNodeType::LOG2DIM); + pos += (min[2] & (LeafNodeType::DIM - 1u)); + + beginOffset = (pos == 0 ? PointIndexT(0) : leaf.getValue(pos - 1)); + endOffset = leaf.getValue(pos+zStride); + + if (endOffset > beginOffset) { + + if (beginOffset == previousOffset) { + rangeList.back().second = dataPtr + endOffset; + } else { + rangeList.push_back(Range(dataPtr + beginOffset, dataPtr + endOffset)); + } + + previousOffset = endOffset; + } + } + } +} + + +template +inline void +pointIndexSearch(RangeDeque& rangeList, ConstAccessor& acc, const CoordBBox& bbox) +{ + using LeafNodeType = typename ConstAccessor::TreeType::LeafNodeType; + using PointIndexT = typename LeafNodeType::ValueType; + using Range = typename RangeDeque::value_type; + + Coord ijk(0), ijkMax(0), ijkA(0), ijkB(0); + const Coord leafMin = bbox.min() & ~(LeafNodeType::DIM - 1); + const Coord leafMax = bbox.max() & ~(LeafNodeType::DIM - 1); + + for (ijk[0] = leafMin[0]; ijk[0] <= leafMax[0]; ijk[0] += LeafNodeType::DIM) { + for (ijk[1] = leafMin[1]; ijk[1] <= leafMax[1]; ijk[1] += LeafNodeType::DIM) { + for (ijk[2] = leafMin[2]; ijk[2] <= leafMax[2]; ijk[2] += LeafNodeType::DIM) { + + if (const LeafNodeType* leaf = acc.probeConstLeaf(ijk)) { + ijkMax = ijk; + ijkMax.offset(LeafNodeType::DIM - 1); + + // intersect leaf bbox with search region. + ijkA = Coord::maxComponent(bbox.min(), ijk); + ijkB = Coord::minComponent(bbox.max(), ijkMax); + + if (ijkA != ijk || ijkB != ijkMax) { + pointIndexSearchVoxels(rangeList, *leaf, ijkA, ijkB); + } else { + // leaf bbox is inside the search region, add all indices. + const PointIndexT* begin = &leaf->indices().front(); + rangeList.push_back(Range(begin, (begin + leaf->indices().size()))); + } + } + } + } + } +} + + +} // namespace point_index_grid_internal + + +// PointIndexIterator implementation + +template +inline +PointIndexIterator::PointIndexIterator() + : mRange(static_cast(nullptr), static_cast(nullptr)) + , mRangeList() + , mIter(mRangeList.begin()) + , mIndexArray() + , mIndexArraySize(0) +{ +} + + +template +inline +PointIndexIterator::PointIndexIterator(const PointIndexIterator& rhs) + : mRange(rhs.mRange) + , mRangeList(rhs.mRangeList) + , mIter(mRangeList.begin()) + , mIndexArray() + , mIndexArraySize(rhs.mIndexArraySize) +{ + if (rhs.mIndexArray) { + mIndexArray.reset(new ValueType[mIndexArraySize]); + memcpy(mIndexArray.get(), rhs.mIndexArray.get(), mIndexArraySize * sizeof(ValueType)); + } +} + + +template +inline PointIndexIterator& +PointIndexIterator::operator=(const PointIndexIterator& rhs) +{ + if (&rhs != this) { + mRange = rhs.mRange; + mRangeList = rhs.mRangeList; + mIter = mRangeList.begin(); + mIndexArray.reset(); + mIndexArraySize = rhs.mIndexArraySize; + + if (rhs.mIndexArray) { + mIndexArray.reset(new ValueType[mIndexArraySize]); + memcpy(mIndexArray.get(), rhs.mIndexArray.get(), mIndexArraySize * sizeof(ValueType)); + } + } + return *this; +} + + +template +inline +PointIndexIterator::PointIndexIterator(const Coord& ijk, ConstAccessor& acc) + : mRange(static_cast(nullptr), static_cast(nullptr)) + , mRangeList() + , mIter(mRangeList.begin()) + , mIndexArray() + , mIndexArraySize(0) +{ + const LeafNodeType* leaf = acc.probeConstLeaf(ijk); + if (leaf && leaf->getIndices(ijk, mRange.first, mRange.second)) { + mRangeList.push_back(mRange); + mIter = mRangeList.begin(); + } +} + + +template +inline +PointIndexIterator::PointIndexIterator(const CoordBBox& bbox, ConstAccessor& acc) + : mRange(static_cast(nullptr), static_cast(nullptr)) + , mRangeList() + , mIter(mRangeList.begin()) + , mIndexArray() + , mIndexArraySize(0) +{ + point_index_grid_internal::pointIndexSearch(mRangeList, acc, bbox); + + if (!mRangeList.empty()) { + mIter = mRangeList.begin(); + mRange = mRangeList.front(); + } +} + + +template +inline void +PointIndexIterator::reset() +{ + mIter = mRangeList.begin(); + if (!mRangeList.empty()) { + mRange = mRangeList.front(); + } else if (mIndexArray) { + mRange.first = mIndexArray.get(); + mRange.second = mRange.first + mIndexArraySize; + } else { + mRange.first = static_cast(nullptr); + mRange.second = static_cast(nullptr); + } +} + + +template +inline void +PointIndexIterator::increment() +{ + ++mRange.first; + if (mRange.first >= mRange.second && mIter != mRangeList.end()) { + ++mIter; + if (mIter != mRangeList.end()) { + mRange = *mIter; + } else if (mIndexArray) { + mRange.first = mIndexArray.get(); + mRange.second = mRange.first + mIndexArraySize; + } + } +} + + +template +inline bool +PointIndexIterator::next() +{ + if (!this->test()) return false; + this->increment(); + return this->test(); +} + + +template +inline size_t +PointIndexIterator::size() const +{ + size_t count = 0; + typename RangeDeque::const_iterator it = mRangeList.begin(); + + for ( ; it != mRangeList.end(); ++it) { + count += it->second - it->first; + } + + return count + mIndexArraySize; +} + + +template +inline void +PointIndexIterator::clear() +{ + mRange.first = static_cast(nullptr); + mRange.second = static_cast(nullptr); + mRangeList.clear(); + mIter = mRangeList.end(); + mIndexArray.reset(); + mIndexArraySize = 0; +} + + +template +inline void +PointIndexIterator::searchAndUpdate(const Coord& ijk, ConstAccessor& acc) +{ + this->clear(); + const LeafNodeType* leaf = acc.probeConstLeaf(ijk); + if (leaf && leaf->getIndices(ijk, mRange.first, mRange.second)) { + mRangeList.push_back(mRange); + mIter = mRangeList.begin(); + } +} + + +template +inline void +PointIndexIterator::searchAndUpdate(const CoordBBox& bbox, ConstAccessor& acc) +{ + this->clear(); + point_index_grid_internal::pointIndexSearch(mRangeList, acc, bbox); + + if (!mRangeList.empty()) { + mIter = mRangeList.begin(); + mRange = mRangeList.front(); + } +} + + +template +template +inline void +PointIndexIterator::searchAndUpdate(const BBoxd& bbox, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform) +{ + this->clear(); + + std::vector searchRegions; + CoordBBox region(Coord::round(bbox.min()), Coord::round(bbox.max())); + + const Coord dim = region.dim(); + const int minExtent = std::min(dim[0], std::min(dim[1], dim[2])); + + if (minExtent > 2) { + // collect indices that don't need to be tested + CoordBBox ibox = region; + ibox.expand(-1); + + point_index_grid_internal::pointIndexSearch(mRangeList, acc, ibox); + + // define regions for the filtered search + ibox.expand(1); + point_index_grid_internal::constructExclusiveRegions(searchRegions, region, ibox); + } else { + searchRegions.push_back(region); + } + + // filtered search + std::deque filteredIndices; + point_index_grid_internal::BBoxFilter + filter(mRangeList, filteredIndices, bbox, points, xform); + + for (size_t n = 0, N = searchRegions.size(); n < N; ++n) { + point_index_grid_internal::filteredPointIndexSearch(filter, acc, searchRegions[n]); + } + + point_index_grid_internal::dequeToArray(filteredIndices, mIndexArray, mIndexArraySize); + + this->reset(); +} + + +template +template +inline void +PointIndexIterator::searchAndUpdate(const Vec3d& center, double radius, + ConstAccessor& acc, const PointArray& points, const math::Transform& xform, + bool subvoxelAccuracy) +{ + this->clear(); + std::vector searchRegions; + + // bounding box + CoordBBox bbox( + Coord::round(Vec3d(center[0] - radius, center[1] - radius, center[2] - radius)), + Coord::round(Vec3d(center[0] + radius, center[1] + radius, center[2] + radius))); + bbox.expand(1); + + const double iRadius = radius * double(1.0 / std::sqrt(3.0)); + if (iRadius > 2.0) { + // inscribed box + CoordBBox ibox( + Coord::round(Vec3d(center[0] - iRadius, center[1] - iRadius, center[2] - iRadius)), + Coord::round(Vec3d(center[0] + iRadius, center[1] + iRadius, center[2] + iRadius))); + ibox.expand(-1); + + // collect indices that don't need to be tested + point_index_grid_internal::pointIndexSearch(mRangeList, acc, ibox); + + ibox.expand(1); + point_index_grid_internal::constructExclusiveRegions(searchRegions, bbox, ibox); + } else { + searchRegions.push_back(bbox); + } + + // filtered search + std::deque filteredIndices; + const double leafNodeDim = double(TreeType::LeafNodeType::DIM); + + using FilterT = point_index_grid_internal::RadialRangeFilter; + + FilterT filter(mRangeList, filteredIndices, + center, radius, points, xform, leafNodeDim, subvoxelAccuracy); + + for (size_t n = 0, N = searchRegions.size(); n < N; ++n) { + point_index_grid_internal::filteredPointIndexSearch(filter, acc, searchRegions[n]); + } + + point_index_grid_internal::dequeToArray(filteredIndices, mIndexArray, mIndexArraySize); + + this->reset(); +} + + +template +template +inline void +PointIndexIterator::worldSpaceSearchAndUpdate(const BBoxd& bbox, ConstAccessor& acc, + const PointArray& points, const math::Transform& xform) +{ + this->searchAndUpdate( + BBoxd(xform.worldToIndex(bbox.min()), xform.worldToIndex(bbox.max())), acc, points, xform); +} + + +template +template +inline void +PointIndexIterator::worldSpaceSearchAndUpdate(const Vec3d& center, double radius, + ConstAccessor& acc, const PointArray& points, const math::Transform& xform, + bool subvoxelAccuracy) +{ + this->searchAndUpdate(xform.worldToIndex(center), + (radius / xform.voxelSize()[0]), acc, points, xform, subvoxelAccuracy); +} + + +//////////////////////////////////////// + +// PointIndexFilter implementation + +template +inline +PointIndexFilter::PointIndexFilter( + const PointArray& points, const TreeType& tree, const math::Transform& xform) + : mPoints(&points), mAcc(tree), mXform(xform), mInvVoxelSize(1.0/xform.voxelSize()[0]) +{ +} + + +template +inline +PointIndexFilter::PointIndexFilter(const PointIndexFilter& rhs) + : mPoints(rhs.mPoints) + , mAcc(rhs.mAcc.tree()) + , mXform(rhs.mXform) + , mInvVoxelSize(rhs.mInvVoxelSize) +{ +} + + +template +template +inline void +PointIndexFilter::searchAndApply( + const PosType& center, ScalarType radius, FilterType& op) +{ + if (radius * mInvVoxelSize < ScalarType(8.0)) { + mIter.searchAndUpdate(openvdb::CoordBBox( + mXform.worldToIndexCellCentered(center - radius), + mXform.worldToIndexCellCentered(center + radius)), mAcc); + } else { + mIter.worldSpaceSearchAndUpdate( + center, radius, mAcc, *mPoints, mXform, /*subvoxelAccuracy=*/false); + } + + const ScalarType radiusSqr = radius * radius; + ScalarType distSqr = 0.0; + PosType pos; + for (; mIter; ++mIter) { + mPoints->getPos(*mIter, pos); + pos -= center; + distSqr = pos.lengthSqr(); + + if (distSqr < radiusSqr) { + op(distSqr, *mIter); + } + } +} + + +//////////////////////////////////////// + + +template +inline typename GridT::Ptr +createPointIndexGrid(const PointArrayT& points, const math::Transform& xform) +{ + typename GridT::Ptr grid = GridT::create(typename GridT::ValueType(0)); + grid->setTransform(xform.copy()); + + if (points.size() > 0) { + point_index_grid_internal::constructPointTree( + grid->tree(), grid->transform(), points); + } + + return grid; +} + + +template +inline typename GridT::Ptr +createPointIndexGrid(const PointArrayT& points, double voxelSize) +{ + math::Transform::Ptr xform = math::Transform::createLinearTransform(voxelSize); + return createPointIndexGrid(points, *xform); +} + + +template +inline bool +isValidPartition(const PointArrayT& points, const GridT& grid) +{ + tree::LeafManager leafs(grid.tree()); + + size_t pointCount = 0; + for (size_t n = 0, N = leafs.leafCount(); n < N; ++n) { + pointCount += leafs.leaf(n).indices().size(); + } + + if (points.size() != pointCount) { + return false; + } + + tbb::atomic changed; + changed = false; + + point_index_grid_internal::ValidPartitioningOp + op(changed, points, grid.transform()); + + leafs.foreach(op); + + return !bool(changed); +} + + +template +inline typename GridT::ConstPtr +getValidPointIndexGrid(const PointArrayT& points, const typename GridT::ConstPtr& grid) +{ + if (isValidPartition(points, *grid)) { + return grid; + } + + return createPointIndexGrid(points, grid->transform()); +} + + +template +inline typename GridT::Ptr +getValidPointIndexGrid(const PointArrayT& points, const typename GridT::Ptr& grid) +{ + if (isValidPartition(points, *grid)) { + return grid; + } + + return createPointIndexGrid(points, grid->transform()); +} + + +//////////////////////////////////////// + + +template +struct PointIndexLeafNode : public tree::LeafNode +{ + using LeafNodeType = PointIndexLeafNode; + using Ptr = SharedPtr; + + using ValueType = T; + using IndexArray = std::vector; + + + IndexArray& indices() { return mIndices; } + const IndexArray& indices() const { return mIndices; } + + bool getIndices(const Coord& ijk, const ValueType*& begin, const ValueType*& end) const; + bool getIndices(Index offset, const ValueType*& begin, const ValueType*& end) const; + + void setOffsetOn(Index offset, const ValueType& val); + void setOffsetOnly(Index offset, const ValueType& val); + + bool isEmpty(const CoordBBox& bbox) const; + +private: + IndexArray mIndices; + + //////////////////////////////////////// + + // The following methods had to be copied from the LeafNode class + // to make the derived PointIndexLeafNode class compatible with the tree structure. + +public: + using BaseLeaf = tree::LeafNode; + using NodeMaskType = util::NodeMask; + + using BaseLeaf::LOG2DIM; + using BaseLeaf::TOTAL; + using BaseLeaf::DIM; + using BaseLeaf::NUM_VALUES; + using BaseLeaf::NUM_VOXELS; + using BaseLeaf::SIZE; + using BaseLeaf::LEVEL; + + /// Default constructor + PointIndexLeafNode() : BaseLeaf(), mIndices() {} + + explicit + PointIndexLeafNode(const Coord& coords, const T& value = zeroVal(), bool active = false) + : BaseLeaf(coords, value, active) + , mIndices() + { + } + + PointIndexLeafNode(PartialCreate, const Coord& coords, + const T& value = zeroVal(), bool active = false) + : BaseLeaf(PartialCreate(), coords, value, active) + , mIndices() + { + } + + /// Deep copy constructor + PointIndexLeafNode(const PointIndexLeafNode& rhs) : BaseLeaf(rhs), mIndices(rhs.mIndices) {} + + /// @brief Return @c true if the given node (which may have a different @c ValueType + /// than this node) has the same active value topology as this node. + template + bool hasSameTopology(const PointIndexLeafNode* other) const { + return BaseLeaf::hasSameTopology(other); + } + + /// Check for buffer, state and origin equivalence. + bool operator==(const PointIndexLeafNode& other) const { return BaseLeaf::operator==(other); } + + bool operator!=(const PointIndexLeafNode& other) const { return !(other == *this); } + + template void merge(const PointIndexLeafNode& rhs) { + BaseLeaf::merge(rhs); + } + template void merge(const ValueType& tileValue, bool tileActive) { + BaseLeaf::template merge(tileValue, tileActive); + } + + template + void merge(const PointIndexLeafNode& other, + const ValueType& /*bg*/, const ValueType& /*otherBG*/) + { + BaseLeaf::template merge(other); + } + + void addLeaf(PointIndexLeafNode*) {} + template + void addLeafAndCache(PointIndexLeafNode*, AccessorT&) {} + + //@{ + /// @brief Return a pointer to this node. + PointIndexLeafNode* touchLeaf(const Coord&) { return this; } + template + PointIndexLeafNode* touchLeafAndCache(const Coord&, AccessorT&) { return this; } + + template + NodeT* probeNodeAndCache(const Coord&, AccessorT&) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + PointIndexLeafNode* probeLeaf(const Coord&) { return this; } + template + PointIndexLeafNode* probeLeafAndCache(const Coord&, AccessorT&) { return this; } + //@} + + //@{ + /// @brief Return a @const pointer to this node. + const PointIndexLeafNode* probeConstLeaf(const Coord&) const { return this; } + template + const PointIndexLeafNode* probeConstLeafAndCache(const Coord&, AccessorT&) const {return this;} + template + const PointIndexLeafNode* probeLeafAndCache(const Coord&, AccessorT&) const { return this; } + const PointIndexLeafNode* probeLeaf(const Coord&) const { return this; } + template + const NodeT* probeConstNodeAndCache(const Coord&, AccessorT&) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + + + // I/O methods + + void readBuffers(std::istream& is, bool fromHalf = false); + void readBuffers(std::istream& is, const CoordBBox&, bool fromHalf = false); + void writeBuffers(std::ostream& os, bool toHalf = false) const; + + + Index64 memUsage() const; + + + //////////////////////////////////////// + + // Disable all write methods to avoid unintentional changes + // to the point-array offsets. + + void assertNonmodifiable() { + assert(false && "Cannot modify voxel values in a PointIndexTree."); + } + + void setActiveState(const Coord&, bool) { assertNonmodifiable(); } + void setActiveState(Index, bool) { assertNonmodifiable(); } + + void setValueOnly(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOnly(Index, const ValueType&) { assertNonmodifiable(); } + + void setValueOff(const Coord&) { assertNonmodifiable(); } + void setValueOff(Index) { assertNonmodifiable(); } + + void setValueOff(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOff(Index, const ValueType&) { assertNonmodifiable(); } + + void setValueOn(const Coord&) { assertNonmodifiable(); } + void setValueOn(Index) { assertNonmodifiable(); } + + void setValueOn(const Coord&, const ValueType&) { assertNonmodifiable(); } + void setValueOn(Index, const ValueType&) { assertNonmodifiable(); } + + void setValue(const Coord&, const ValueType&) { assertNonmodifiable(); } + + void setValuesOn() { assertNonmodifiable(); } + void setValuesOff() { assertNonmodifiable(); } + + template + void modifyValue(Index, const ModifyOp&) { assertNonmodifiable(); } + + template + void modifyValue(const Coord&, const ModifyOp&) { assertNonmodifiable(); } + + template + void modifyValueAndActiveState(const Coord&, const ModifyOp&) { assertNonmodifiable(); } + + void clip(const CoordBBox&, const ValueType&) { assertNonmodifiable(); } + + void fill(const CoordBBox&, const ValueType&, bool) { assertNonmodifiable(); } + void fill(const ValueType&) {} + void fill(const ValueType&, bool) { assertNonmodifiable(); } + + template + void setValueOnlyAndCache(const Coord&, const ValueType&, AccessorT&) {assertNonmodifiable();} + + template + void modifyValueAndActiveStateAndCache(const Coord&, const ModifyOp&, AccessorT&) { + assertNonmodifiable(); + } + + template + void setValueOffAndCache(const Coord&, const ValueType&, AccessorT&) { assertNonmodifiable(); } + + template + void setActiveStateAndCache(const Coord&, bool, AccessorT&) { assertNonmodifiable(); } + + void resetBackground(const ValueType&, const ValueType&) { assertNonmodifiable(); } + + void signedFloodFill(const ValueType&) { assertNonmodifiable(); } + void signedFloodFill(const ValueType&, const ValueType&) { assertNonmodifiable(); } + + void negate() { assertNonmodifiable(); } + +protected: + using ValueOn = typename BaseLeaf::ValueOn; + using ValueOff = typename BaseLeaf::ValueOff; + using ValueAll = typename BaseLeaf::ValueAll; + using ChildOn = typename BaseLeaf::ChildOn; + using ChildOff = typename BaseLeaf::ChildOff; + using ChildAll = typename BaseLeaf::ChildAll; + + using MaskOnIterator = typename NodeMaskType::OnIterator; + using MaskOffIterator = typename NodeMaskType::OffIterator; + using MaskDenseIterator = typename NodeMaskType::DenseIterator; + + // During topology-only construction, access is needed + // to protected/private members of other template instances. + template friend struct PointIndexLeafNode; + + friend class tree::IteratorBase; + friend class tree::IteratorBase; + friend class tree::IteratorBase; + +public: + using ValueOnIter = typename BaseLeaf::template ValueIter< + MaskOnIterator, PointIndexLeafNode, const ValueType, ValueOn>; + using ValueOnCIter = typename BaseLeaf::template ValueIter< + MaskOnIterator, const PointIndexLeafNode, const ValueType, ValueOn>; + using ValueOffIter = typename BaseLeaf::template ValueIter< + MaskOffIterator, PointIndexLeafNode, const ValueType, ValueOff>; + using ValueOffCIter = typename BaseLeaf::template ValueIter< + MaskOffIterator,const PointIndexLeafNode,const ValueType, ValueOff>; + using ValueAllIter = typename BaseLeaf::template ValueIter< + MaskDenseIterator, PointIndexLeafNode, const ValueType, ValueAll>; + using ValueAllCIter = typename BaseLeaf::template ValueIter< + MaskDenseIterator,const PointIndexLeafNode,const ValueType, ValueAll>; + using ChildOnIter = typename BaseLeaf::template ChildIter< + MaskOnIterator, PointIndexLeafNode, ChildOn>; + using ChildOnCIter = typename BaseLeaf::template ChildIter< + MaskOnIterator, const PointIndexLeafNode, ChildOn>; + using ChildOffIter = typename BaseLeaf::template ChildIter< + MaskOffIterator, PointIndexLeafNode, ChildOff>; + using ChildOffCIter = typename BaseLeaf::template ChildIter< + MaskOffIterator, const PointIndexLeafNode, ChildOff>; + using ChildAllIter = typename BaseLeaf::template DenseIter< + PointIndexLeafNode, ValueType, ChildAll>; + using ChildAllCIter = typename BaseLeaf::template DenseIter< + const PointIndexLeafNode, const ValueType, ChildAll>; + +#define VMASK_ this->getValueMask() + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(VMASK_.beginOn(), this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(VMASK_.beginOn(), this); } + ValueOnIter beginValueOn() { return ValueOnIter(VMASK_.beginOn(), this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(VMASK_.beginOff(), this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(VMASK_.beginOff(), this); } + ValueOffIter beginValueOff() { return ValueOffIter(VMASK_.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(VMASK_.beginDense(), this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(VMASK_.beginDense(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(VMASK_.beginDense(), this); } + + ValueOnCIter cendValueOn() const { return ValueOnCIter(VMASK_.endOn(), this); } + ValueOnCIter endValueOn() const { return ValueOnCIter(VMASK_.endOn(), this); } + ValueOnIter endValueOn() { return ValueOnIter(VMASK_.endOn(), this); } + ValueOffCIter cendValueOff() const { return ValueOffCIter(VMASK_.endOff(), this); } + ValueOffCIter endValueOff() const { return ValueOffCIter(VMASK_.endOff(), this); } + ValueOffIter endValueOff() { return ValueOffIter(VMASK_.endOff(), this); } + ValueAllCIter cendValueAll() const { return ValueAllCIter(VMASK_.endDense(), this); } + ValueAllCIter endValueAll() const { return ValueAllCIter(VMASK_.endDense(), this); } + ValueAllIter endValueAll() { return ValueAllIter(VMASK_.endDense(), this); } + + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnCIter beginChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(VMASK_.endOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffCIter beginChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(VMASK_.endOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(VMASK_.beginDense(), this); } + ChildAllCIter beginChildAll() const { return ChildAllCIter(VMASK_.beginDense(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(VMASK_.beginDense(), this); } + + ChildOnCIter cendChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnCIter endChildOn() const { return ChildOnCIter(VMASK_.endOn(), this); } + ChildOnIter endChildOn() { return ChildOnIter(VMASK_.endOn(), this); } + ChildOffCIter cendChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffCIter endChildOff() const { return ChildOffCIter(VMASK_.endOff(), this); } + ChildOffIter endChildOff() { return ChildOffIter(VMASK_.endOff(), this); } + ChildAllCIter cendChildAll() const { return ChildAllCIter(VMASK_.endDense(), this); } + ChildAllCIter endChildAll() const { return ChildAllCIter(VMASK_.endDense(), this); } + ChildAllIter endChildAll() { return ChildAllIter(VMASK_.endDense(), this); } +#undef VMASK_ +}; // struct PointIndexLeafNode + + +template +inline bool +PointIndexLeafNode::getIndices(const Coord& ijk, + const ValueType*& begin, const ValueType*& end) const +{ + return getIndices(LeafNodeType::coordToOffset(ijk), begin, end); +} + + +template +inline bool +PointIndexLeafNode::getIndices(Index offset, + const ValueType*& begin, const ValueType*& end) const +{ + if (this->isValueMaskOn(offset)) { + const ValueType* dataPtr = &mIndices.front(); + begin = dataPtr + (offset == 0 ? ValueType(0) : this->buffer()[offset - 1]); + end = dataPtr + this->buffer()[offset]; + return true; + } + return false; +} + + +template +inline void +PointIndexLeafNode::setOffsetOn(Index offset, const ValueType& val) +{ + this->buffer().setValue(offset, val); + this->setValueMaskOn(offset); +} + + +template +inline void +PointIndexLeafNode::setOffsetOnly(Index offset, const ValueType& val) +{ + this->buffer().setValue(offset, val); +} + + +template +inline bool +PointIndexLeafNode::isEmpty(const CoordBBox& bbox) const +{ + Index xPos, pos, zStride = Index(bbox.max()[2] - bbox.min()[2]); + Coord ijk; + + for (ijk[0] = bbox.min()[0]; ijk[0] <= bbox.max()[0]; ++ijk[0]) { + xPos = (ijk[0] & (DIM - 1u)) << (2 * LOG2DIM); + + for (ijk[1] = bbox.min()[1]; ijk[1] <= bbox.max()[1]; ++ijk[1]) { + pos = xPos + ((ijk[1] & (DIM - 1u)) << LOG2DIM); + pos += (bbox.min()[2] & (DIM - 1u)); + + if (this->buffer()[pos+zStride] > (pos == 0 ? T(0) : this->buffer()[pos - 1])) { + return false; + } + } + } + + return true; +} + + +template +inline void +PointIndexLeafNode::readBuffers(std::istream& is, bool fromHalf) +{ + BaseLeaf::readBuffers(is, fromHalf); + + Index64 numIndices = Index64(0); + is.read(reinterpret_cast(&numIndices), sizeof(Index64)); + + mIndices.resize(size_t(numIndices)); + is.read(reinterpret_cast(mIndices.data()), numIndices * sizeof(T)); +} + + +template +inline void +PointIndexLeafNode::readBuffers(std::istream& is, const CoordBBox& bbox, bool fromHalf) +{ + // Read and clip voxel values. + BaseLeaf::readBuffers(is, bbox, fromHalf); + + Index64 numIndices = Index64(0); + is.read(reinterpret_cast(&numIndices), sizeof(Index64)); + + const Index64 numBytes = numIndices * sizeof(T); + + if (bbox.hasOverlap(this->getNodeBoundingBox())) { + mIndices.resize(size_t(numIndices)); + is.read(reinterpret_cast(mIndices.data()), numBytes); + + /// @todo If any voxels were deactivated as a result of clipping in the call to + /// BaseLeaf::readBuffers(), the point index list will need to be regenerated. + } else { + // Read and discard voxel values. + std::unique_ptr buf{new char[numBytes]}; + is.read(buf.get(), numBytes); + } + + // Reserved for future use + Index64 auxDataBytes = Index64(0); + is.read(reinterpret_cast(&auxDataBytes), sizeof(Index64)); + if (auxDataBytes > 0) { + // For now, read and discard any auxiliary data. + std::unique_ptr auxData{new char[auxDataBytes]}; + is.read(auxData.get(), auxDataBytes); + } +} + + +template +inline void +PointIndexLeafNode::writeBuffers(std::ostream& os, bool toHalf) const +{ + BaseLeaf::writeBuffers(os, toHalf); + + Index64 numIndices = Index64(mIndices.size()); + os.write(reinterpret_cast(&numIndices), sizeof(Index64)); + os.write(reinterpret_cast(mIndices.data()), numIndices * sizeof(T)); + + // Reserved for future use + const Index64 auxDataBytes = Index64(0); + os.write(reinterpret_cast(&auxDataBytes), sizeof(Index64)); +} + + +template +inline Index64 +PointIndexLeafNode::memUsage() const +{ + return BaseLeaf::memUsage() + Index64((sizeof(T)*mIndices.capacity()) + sizeof(mIndices)); +} + +} // namespace tools + + +//////////////////////////////////////// + + +namespace tree { + +/// Helper metafunction used to implement LeafNode::SameConfiguration +/// (which, as an inner class, can't be independently specialized) +template +struct SameLeafConfig > +{ + static const bool value = true; +}; + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POINT_INDEX_GRID_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PointPartitioner.h b/openvdb/tools/PointPartitioner.h new file mode 100644 index 00000000..ee5eccee --- /dev/null +++ b/openvdb/tools/PointPartitioner.h @@ -0,0 +1,1049 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file PointPartitioner.h +/// +/// @brief Spatially partitions points using a parallel radix-based +/// sorting algorithm. +/// +/// @details Performs a stable deterministic sort; partitioning the same +/// point sequence will produce the same result each time. +/// @details The algorithm is unbounded meaning that points may be +/// distributed anywhere in index space. +/// @details The actual points are never stored in the tool, only +/// offsets into an external array. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_POINT_PARTITIONER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POINT_PARTITIONER_HAS_BEEN_INCLUDED + +#include +#include + +#include // boost::int_t::least +#include + +#include +#include +#include + +#include +#include // for std::isfinite() +#include +#include +#include +#include // std::pair +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +//////////////////////////////////////// + + +/// @brief Partitions points into @c BucketLog2Dim aligned buckets +/// using a parallel radix-based sorting algorithm. +/// +/// @interface PointArray +/// Expected interface for the PointArray container: +/// @code +/// template +/// struct PointArray +/// { +/// // The type used to represent world-space point positions +/// using PosType = VectorType; +/// +/// // Return the number of points in the array +/// size_t size() const; +/// +/// // Return the world-space position of the nth point in the array. +/// void getPos(size_t n, PosType& xyz) const; +/// }; +/// @endcode +/// +/// @details Performs a stable deterministic sort; partitioning the same +/// point sequence will produce the same result each time. +/// @details The algorithm is unbounded meaning that points may be +/// distributed anywhere in index space. +/// @details The actual points are never stored in the tool, only +/// offsets into an external array. +/// @details @c BucketLog2Dim defines the bucket coordinate dimensions, +/// i.e. BucketLog2Dim = 3 corresponds to a bucket that spans +/// a (2^3)^3 = 8^3 voxel region. +template +class PointPartitioner +{ +public: + enum { LOG2DIM = BucketLog2Dim }; + + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using IndexType = PointIndexType; + using VoxelOffsetType = typename boost::int_t<1 + (3 * BucketLog2Dim)>::least; + using VoxelOffsetArray = boost::scoped_array; + + class IndexIterator; + + ////////// + + PointPartitioner(); + + /// @brief Partitions point indices into @c BucketLog2Dim aligned buckets. + /// + /// @param points list of world space points. + /// @param xform world to index space transform. + /// @param voxelOrder sort point indices by local voxel offsets. + /// @param recordVoxelOffsets construct local voxel offsets + /// @param cellCenteredTransform toggle the cell-centered interpretation that imagines world + /// space as divided into discrete cells (e.g., cubes) centered + /// on the image of the index-space lattice points. + template + void construct(const PointArray& points, const math::Transform& xform, + bool voxelOrder = false, bool recordVoxelOffsets = false, + bool cellCenteredTransform = true); + + + /// @brief Partitions point indices into @c BucketLog2Dim aligned buckets. + /// + /// @param points list of world space points. + /// @param xform world to index space transform. + /// @param voxelOrder sort point indices by local voxel offsets. + /// @param recordVoxelOffsets construct local voxel offsets + /// @param cellCenteredTransform toggle the cell-centered interpretation that imagines world + /// space as divided into discrete cells (e.g., cubes) centered + /// on the image of the index-space lattice points. + template + static Ptr create(const PointArray& points, const math::Transform& xform, + bool voxelOrder = false, bool recordVoxelOffsets = false, + bool cellCenteredTransform = true); + + + /// @brief Returns the number of buckets. + size_t size() const { return mPageCount; } + + /// @brief true if the container size is 0, false otherwise. + bool empty() const { return mPageCount == 0; } + + /// @brief Removes all data and frees up memory. + void clear(); + + /// @brief Exchanges the content of the container by another. + void swap(PointPartitioner&); + + /// @brief Returns the point indices for bucket @a n + IndexIterator indices(size_t n) const; + + /// @brief Returns the coordinate-aligned bounding box for bucket @a n + CoordBBox getBBox(size_t n) const { + return CoordBBox::createCube(mPageCoordinates[n], (1u << BucketLog2Dim)); + } + + /// @brief Returns the origin coordinate for bucket @a n + const Coord& origin(size_t n) const { return mPageCoordinates[n]; } + + /// @brief Returns a list of @c LeafNode voxel offsets for the points. + /// @note The list is optionally constructed. + const VoxelOffsetArray& voxelOffsets() const { return mVoxelOffsets; } + + /// @brief Returns @c true if this point partitioning was constructed + /// using a cell-centered transform. + /// @note Cell-centered interpretation is the default behavior. + bool usingCellCenteredTransform() const { return mUsingCellCenteredTransform; } + +private: + // Disallow copying + PointPartitioner(const PointPartitioner&); + PointPartitioner& operator=(const PointPartitioner&); + + boost::scoped_array mPointIndices; + VoxelOffsetArray mVoxelOffsets; + + boost::scoped_array mPageOffsets; + boost::scoped_array mPageCoordinates; + IndexType mPageCount; + bool mUsingCellCenteredTransform; +}; // class PointPartitioner + + +using UInt32PointPartitioner = PointPartitioner; + + +template +class PointPartitioner::IndexIterator +{ +public: + using IndexType = PointIndexType; + + IndexIterator(IndexType* begin = nullptr, IndexType* end = nullptr) + : mBegin(begin), mEnd(end), mItem(begin) {} + + /// @brief Rewind to first item. + void reset() { mItem = mBegin; } + + /// @brief Number of point indices in the iterator range. + size_t size() const { return mEnd - mBegin; } + + /// @brief Returns the item to which this iterator is currently pointing. + IndexType& operator*() { assert(mItem != nullptr); return *mItem; } + const IndexType& operator*() const { assert(mItem != nullptr); return *mItem; } + + /// @brief Return @c true if this iterator is not yet exhausted. + operator bool() const { return mItem < mEnd; } + bool test() const { return mItem < mEnd; } + + /// @brief Advance to the next item. + IndexIterator& operator++() { assert(this->test()); ++mItem; return *this; } + + /// @brief Advance to the next item. + bool next() { this->operator++(); return this->test(); } + bool increment() { this->next(); return this->test(); } + + /// @brief Equality operators + bool operator==(const IndexIterator& other) const { return mItem == other.mItem; } + bool operator!=(const IndexIterator& other) const { return !this->operator==(other); } + +private: + IndexType * const mBegin, * const mEnd; + IndexType * mItem; +}; // class PointPartitioner::IndexIterator + + +//////////////////////////////////////// +//////////////////////////////////////// + +// Implementation details + + +namespace point_partitioner_internal { + + +template +struct ComputePointOrderOp +{ + ComputePointOrderOp(PointIndexType* pointOrder, + const PointIndexType* bucketCounters, const PointIndexType* bucketOffsets) + : mPointOrder(pointOrder) + , mBucketCounters(bucketCounters) + , mBucketOffsets(bucketOffsets) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + mPointOrder[n] += mBucketCounters[mBucketOffsets[n]]; + } + } + + PointIndexType * const mPointOrder; + PointIndexType const * const mBucketCounters; + PointIndexType const * const mBucketOffsets; +}; // struct ComputePointOrderOp + + +template +struct CreateOrderedPointIndexArrayOp +{ + CreateOrderedPointIndexArrayOp(PointIndexType* orderedIndexArray, + const PointIndexType* pointOrder, const PointIndexType* indices) + : mOrderedIndexArray(orderedIndexArray) + , mPointOrder(pointOrder) + , mIndices(indices) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + mOrderedIndexArray[mPointOrder[n]] = mIndices[n]; + } + } + + PointIndexType * const mOrderedIndexArray; + PointIndexType const * const mPointOrder; + PointIndexType const * const mIndices; +}; // struct CreateOrderedPointIndexArrayOp + + +template +struct VoxelOrderOp +{ + using VoxelOffsetType = typename boost::int_t<1 + (3 * BucketLog2Dim)>::least; + using VoxelOffsetArray = boost::scoped_array; + using IndexArray = boost::scoped_array; + + VoxelOrderOp(IndexArray& indices, const IndexArray& pages,const VoxelOffsetArray& offsets) + : mIndices(indices.get()) + , mPages(pages.get()) + , mVoxelOffsets(offsets.get()) + { + } + + void operator()(const tbb::blocked_range& range) const { + + PointIndexType pointCount = 0; + for (size_t n(range.begin()), N(range.end()); n != N; ++n) { + pointCount = std::max(pointCount, (mPages[n + 1] - mPages[n])); + } + + const PointIndexType voxelCount = 1 << (3 * BucketLog2Dim); + + // allocate histogram buffers + boost::scoped_array offsets(new VoxelOffsetType[pointCount]); + boost::scoped_array sortedIndices(new PointIndexType[pointCount]); + boost::scoped_array histogram(new PointIndexType[voxelCount]); + + for (size_t n(range.begin()), N(range.end()); n != N; ++n) { + + PointIndexType * const indices = mIndices + mPages[n]; + pointCount = mPages[n + 1] - mPages[n]; + + // local copy of voxel offsets. + for (PointIndexType i = 0; i < pointCount; ++i) { + offsets[i] = mVoxelOffsets[ indices[i] ]; + } + + // reset histogram + memset(&histogram[0], 0, voxelCount * sizeof(PointIndexType)); + + // compute histogram + for (PointIndexType i = 0; i < pointCount; ++i) { + ++histogram[ offsets[i] ]; + } + + PointIndexType count = 0, startOffset; + for (int i = 0; i < int(voxelCount); ++i) { + if (histogram[i] > 0) { + startOffset = count; + count += histogram[i]; + histogram[i] = startOffset; + } + } + + // sort indices based on voxel offset + for (PointIndexType i = 0; i < pointCount; ++i) { + sortedIndices[ histogram[ offsets[i] ]++ ] = indices[i]; + } + + memcpy(&indices[0], &sortedIndices[0], sizeof(PointIndexType) * pointCount); + } + } + + PointIndexType * const mIndices; + PointIndexType const * const mPages; + VoxelOffsetType const * const mVoxelOffsets; +}; // struct VoxelOrderOp + + +template +struct LeafNodeOriginOp +{ + using IndexArray = boost::scoped_array; + using CoordArray = boost::scoped_array; + + LeafNodeOriginOp(CoordArray& coordinates, + const IndexArray& indices, const IndexArray& pages, + const PointArray& points, const math::Transform& m, int log2dim, bool cellCenteredTransform) + : mCoordinates(coordinates.get()) + , mIndices(indices.get()) + , mPages(pages.get()) + , mPoints(&points) + , mXForm(m) + , mLog2Dim(log2dim) + , mCellCenteredTransform(cellCenteredTransform) + { + } + + void operator()(const tbb::blocked_range& range) const { + + using PosType = typename PointArray::PosType; + + const bool cellCentered = mCellCenteredTransform; + const int mask = ~((1 << mLog2Dim) - 1); + Coord ijk; + PosType pos; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + mPoints->getPos(mIndices[mPages[n]], pos); + + if (std::isfinite(pos[0]) && std::isfinite(pos[1]) && std::isfinite(pos[2])) { + ijk = cellCentered ? mXForm.worldToIndexCellCentered(pos) : + mXForm.worldToIndexNodeCentered(pos); + + ijk[0] &= mask; + ijk[1] &= mask; + ijk[2] &= mask; + + mCoordinates[n] = ijk; + } + } + } + + Coord * const mCoordinates; + PointIndexType const * const mIndices; + PointIndexType const * const mPages; + PointArray const * const mPoints; + math::Transform const mXForm; + int const mLog2Dim; + bool const mCellCenteredTransform; +}; // struct LeafNodeOriginOp + + +//////////////////////////////////////// + + +template +struct Array +{ + using Ptr = SharedPtr; + + Array(size_t size) : mSize(size), mData(new T[size]) { } + + size_t size() const { return mSize; } + + T* data() { return mData.get(); } + const T* data() const { return mData.get(); } + + void clear() { mSize = 0; mData.reset(); } + +private: + size_t mSize; + boost::scoped_array mData; +}; // struct Array + + +template +struct MoveSegmentDataOp +{ + using Segment = Array; + using SegmentPtr = typename Segment::Ptr; + + MoveSegmentDataOp(std::vector& indexLists, SegmentPtr* segments) + : mIndexLists(&indexLists[0]), mSegments(segments) + { + } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n(range.begin()), N(range.end()); n != N; ++n) { + PointIndexType* indices = mIndexLists[n]; + SegmentPtr& segment = mSegments[n]; + + tbb::parallel_for(tbb::blocked_range(0, segment->size()), + CopyData(indices, segment->data())); + + segment.reset(); // clear data + } + } + +private: + + struct CopyData + { + CopyData(PointIndexType* lhs, const PointIndexType* rhs) : mLhs(lhs), mRhs(rhs) { } + + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + mLhs[n] = mRhs[n]; + } + } + + PointIndexType * const mLhs; + PointIndexType const * const mRhs; + }; + + PointIndexType * const * const mIndexLists; + SegmentPtr * const mSegments; +}; // struct MoveSegmentDataOp + + +template +struct MergeBinsOp +{ + using Segment = Array; + using SegmentPtr = typename Segment::Ptr; + + using IndexPair = std::pair; + using IndexPairList = std::deque; + using IndexPairListPtr = SharedPtr; + using IndexPairListMap = std::map; + using IndexPairListMapPtr = SharedPtr; + + MergeBinsOp(IndexPairListMapPtr* bins, + SegmentPtr* indexSegments, + SegmentPtr* offsetSegments, + Coord* coords, + size_t numSegments) + : mBins(bins) + , mIndexSegments(indexSegments) + , mOffsetSegments(offsetSegments) + , mCoords(coords) + , mNumSegments(numSegments) + { + } + + void operator()(const tbb::blocked_range& range) const { + + std::vector data; + std::vector arrayOffsets; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const Coord& ijk = mCoords[n]; + size_t numIndices = 0; + + data.clear(); + + for (size_t i = 0, I = mNumSegments; i < I; ++i) { + + IndexPairListMap& idxMap = *mBins[i]; + typename IndexPairListMap::iterator iter = idxMap.find(ijk); + + if (iter != idxMap.end() && iter->second) { + IndexPairListPtr& idxListPtr = iter->second; + + data.push_back(&idxListPtr); + numIndices += idxListPtr->size(); + } + } + + if (data.empty() || numIndices == 0) continue; + + SegmentPtr& indexSegment = mIndexSegments[n]; + SegmentPtr& offsetSegment = mOffsetSegments[n]; + + indexSegment.reset(new Segment(numIndices)); + offsetSegment.reset(new Segment(numIndices)); + + arrayOffsets.clear(); + arrayOffsets.reserve(data.size()); + + for (size_t i = 0, count = 0, I = data.size(); i < I; ++i) { + arrayOffsets.push_back(PointIndexType(count)); + count += (*data[i])->size(); + } + + tbb::parallel_for(tbb::blocked_range(0, data.size()), + CopyData(&data[0], &arrayOffsets[0], indexSegment->data(), offsetSegment->data())); + } + } + +private: + + struct CopyData + { + CopyData(IndexPairListPtr** indexLists, + const PointIndexType* arrayOffsets, + PointIndexType* indices, + PointIndexType* offsets) + : mIndexLists(indexLists) + , mArrayOffsets(arrayOffsets) + , mIndices(indices) + , mOffsets(offsets) + { + } + + void operator()(const tbb::blocked_range& range) const { + + using CIter = typename IndexPairList::const_iterator; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const PointIndexType arrayOffset = mArrayOffsets[n]; + PointIndexType* indexPtr = &mIndices[arrayOffset]; + PointIndexType* offsetPtr = &mOffsets[arrayOffset]; + + IndexPairListPtr& list = *mIndexLists[n]; + + for (CIter it = list->begin(), end = list->end(); it != end; ++it) { + const IndexPair& data = *it; + *indexPtr++ = data.first; + *offsetPtr++ = data.second; + } + + list.reset(); // clear data + } + } + + IndexPairListPtr * const * const mIndexLists; + PointIndexType const * const mArrayOffsets; + PointIndexType * const mIndices; + PointIndexType * const mOffsets; + }; // struct CopyData + + IndexPairListMapPtr * const mBins; + SegmentPtr * const mIndexSegments; + SegmentPtr * const mOffsetSegments; + Coord const * const mCoords; + size_t const mNumSegments; +}; // struct MergeBinsOp + + +template +struct BinPointIndicesOp +{ + using PosType = typename PointArray::PosType; + using IndexPair = std::pair; + using IndexPairList = std::deque; + using IndexPairListPtr = SharedPtr; + using IndexPairListMap = std::map; + using IndexPairListMapPtr = SharedPtr; + + BinPointIndicesOp(IndexPairListMapPtr* data, + const PointArray& points, + VoxelOffsetType* voxelOffsets, + const math::Transform& m, + Index binLog2Dim, + Index bucketLog2Dim, + size_t numSegments, + bool cellCenteredTransform) + : mData(data) + , mPoints(&points) + , mVoxelOffsets(voxelOffsets) + , mXForm(m) + , mBinLog2Dim(binLog2Dim) + , mBucketLog2Dim(bucketLog2Dim) + , mNumSegments(numSegments) + , mCellCenteredTransform(cellCenteredTransform) + { + } + + void operator()(const tbb::blocked_range& range) const { + + const Index log2dim = mBucketLog2Dim; + const Index log2dim2 = 2 * log2dim; + const Index bucketMask = (1u << log2dim) - 1u; + + const Index binLog2dim = mBinLog2Dim; + const Index binLog2dim2 = 2 * binLog2dim; + + const Index binMask = (1u << (log2dim + binLog2dim)) - 1u; + const Index invBinMask = ~binMask; + + IndexPairList * idxList = nullptr; + Coord ijk(0, 0, 0), loc(0, 0, 0), binCoord(0, 0, 0), lastBinCoord(1, 2, 3); + PosType pos; + + PointIndexType bucketOffset = 0; + VoxelOffsetType voxelOffset = 0; + + const bool cellCentered = mCellCenteredTransform; + + const size_t numPoints = mPoints->size(); + const size_t segmentSize = numPoints / mNumSegments; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + IndexPairListMapPtr& dataPtr = mData[n]; + if (!dataPtr) dataPtr.reset(new IndexPairListMap()); + IndexPairListMap& idxMap = *dataPtr; + + const bool isLastSegment = (n + 1) >= mNumSegments; + + const size_t start = n * segmentSize; + const size_t end = isLastSegment ? numPoints : (start + segmentSize); + + for (size_t i = start; i != end; ++i) { + + mPoints->getPos(i, pos); + + if (std::isfinite(pos[0]) && std::isfinite(pos[1]) && std::isfinite(pos[2])) { + ijk = cellCentered ? mXForm.worldToIndexCellCentered(pos) : + mXForm.worldToIndexNodeCentered(pos); + + if (mVoxelOffsets) { + loc[0] = ijk[0] & bucketMask; + loc[1] = ijk[1] & bucketMask; + loc[2] = ijk[2] & bucketMask; + voxelOffset = VoxelOffsetType( + (loc[0] << log2dim2) + (loc[1] << log2dim) + loc[2]); + } + + binCoord[0] = ijk[0] & invBinMask; + binCoord[1] = ijk[1] & invBinMask; + binCoord[2] = ijk[2] & invBinMask; + + ijk[0] &= binMask; + ijk[1] &= binMask; + ijk[2] &= binMask; + + ijk[0] >>= log2dim; + ijk[1] >>= log2dim; + ijk[2] >>= log2dim; + + bucketOffset = PointIndexType( + (ijk[0] << binLog2dim2) + (ijk[1] << binLog2dim) + ijk[2]); + + if (lastBinCoord != binCoord) { + lastBinCoord = binCoord; + IndexPairListPtr& idxListPtr = idxMap[lastBinCoord]; + if (!idxListPtr) idxListPtr.reset(new IndexPairList()); + idxList = idxListPtr.get(); + } + + idxList->push_back(IndexPair(PointIndexType(i), bucketOffset)); + if (mVoxelOffsets) mVoxelOffsets[i] = voxelOffset; + } + } + } + } + + IndexPairListMapPtr * const mData; + PointArray const * const mPoints; + VoxelOffsetType * const mVoxelOffsets; + math::Transform const mXForm; + Index const mBinLog2Dim; + Index const mBucketLog2Dim; + size_t const mNumSegments; + bool const mCellCenteredTransform; +}; // struct BinPointIndicesOp + + +template +struct OrderSegmentsOp +{ + using IndexArray = boost::scoped_array; + using SegmentPtr = typename Array::Ptr; + + OrderSegmentsOp(SegmentPtr* indexSegments, SegmentPtr* offestSegments, + IndexArray* pageOffsetArrays, Index binVolume) + : mIndexSegments(indexSegments) + , mOffsetSegments(offestSegments) + , mPageOffsetArrays(pageOffsetArrays) + , mBinVolume(binVolume) + { + } + + void operator()(const tbb::blocked_range& range) const { + + const size_t bucketCountersSize = size_t(mBinVolume); + IndexArray bucketCounters(new PointIndexType[bucketCountersSize]); + + size_t maxSegmentSize = 0; + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + maxSegmentSize = std::max(maxSegmentSize, mIndexSegments[n]->size()); + } + + IndexArray bucketIndices(new PointIndexType[maxSegmentSize]); + + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + memset(bucketCounters.get(), 0, sizeof(PointIndexType) * bucketCountersSize); + + const size_t segmentSize = mOffsetSegments[n]->size(); + PointIndexType* offsets = mOffsetSegments[n]->data(); + + // Count the number of points per bucket and assign a local bucket index + // to each point. + for (size_t i = 0; i < segmentSize; ++i) { + bucketIndices[i] = bucketCounters[offsets[i]]++; + } + + PointIndexType nonemptyBucketCount = 0; + for (size_t i = 0; i < bucketCountersSize; ++i) { + nonemptyBucketCount += static_cast(bucketCounters[i] != 0); + } + + + IndexArray& pageOffsets = mPageOffsetArrays[n]; + pageOffsets.reset(new PointIndexType[nonemptyBucketCount + 1]); + pageOffsets[0] = nonemptyBucketCount + 1; // stores array size in first element + + // Compute bucket counter prefix sum + PointIndexType count = 0, idx = 1; + for (size_t i = 0; i < bucketCountersSize; ++i) { + if (bucketCounters[i] != 0) { + pageOffsets[idx] = bucketCounters[i]; + bucketCounters[i] = count; + count += pageOffsets[idx]; + ++idx; + } + } + + PointIndexType* indices = mIndexSegments[n]->data(); + const tbb::blocked_range segmentRange(0, segmentSize); + + // Compute final point order by incrementing the local bucket point index + // with the prefix sum offset. + tbb::parallel_for(segmentRange, ComputePointOrderOp( + bucketIndices.get(), bucketCounters.get(), offsets)); + + tbb::parallel_for(segmentRange, CreateOrderedPointIndexArrayOp( + offsets, bucketIndices.get(), indices)); + + mIndexSegments[n]->clear(); // clear data + } + } + + SegmentPtr * const mIndexSegments; + SegmentPtr * const mOffsetSegments; + IndexArray * const mPageOffsetArrays; + Index const mBinVolume; +}; // struct OrderSegmentsOp + + +//////////////////////////////////////// + + +/// @brief Segment points using one level of least significant digit radix bins. +template +inline void binAndSegment( + const PointArray& points, + const math::Transform& xform, + boost::scoped_array::Ptr>& indexSegments, + boost::scoped_array::Ptr>& offsetSegments, + size_t& segmentCount, + const Index binLog2Dim, + const Index bucketLog2Dim, + VoxelOffsetType* voxelOffsets = nullptr, + bool cellCenteredTransform = true) +{ + using IndexPair = std::pair; + using IndexPairList = std::deque; + using IndexPairListPtr = SharedPtr; + using IndexPairListMap = std::map; + using IndexPairListMapPtr = SharedPtr; + + size_t numTasks = 1, numThreads = size_t(tbb::task_scheduler_init::default_num_threads()); + if (points.size() > (numThreads * 2)) numTasks = numThreads * 2; + else if (points.size() > numThreads) numTasks = numThreads; + + boost::scoped_array bins(new IndexPairListMapPtr[numTasks]); + + using BinOp = BinPointIndicesOp; + + tbb::parallel_for(tbb::blocked_range(0, numTasks), + BinOp(bins.get(), points, voxelOffsets, xform, binLog2Dim, bucketLog2Dim, + numTasks, cellCenteredTransform)); + + std::set uniqueCoords; + + for (size_t i = 0; i < numTasks; ++i) { + IndexPairListMap& idxMap = *bins[i]; + for (typename IndexPairListMap::iterator it = idxMap.begin(); it != idxMap.end(); ++it) { + uniqueCoords.insert(it->first); + } + } + + std::vector coords(uniqueCoords.begin(), uniqueCoords.end()); + uniqueCoords.clear(); + + segmentCount = coords.size(); + + using SegmentPtr = typename Array::Ptr; + + indexSegments.reset(new SegmentPtr[segmentCount]); + offsetSegments.reset(new SegmentPtr[segmentCount]); + + using MergeOp = MergeBinsOp; + + tbb::parallel_for(tbb::blocked_range(0, segmentCount), + MergeOp(bins.get(), indexSegments.get(), offsetSegments.get(), &coords[0], numTasks)); +} + + +template +inline void partition( + const PointArray& points, + const math::Transform& xform, + const Index bucketLog2Dim, + boost::scoped_array& pointIndices, + boost::scoped_array& pageOffsets, + PointIndexType& pageCount, + boost::scoped_array& voxelOffsets, + bool recordVoxelOffsets, + bool cellCenteredTransform) +{ + if (recordVoxelOffsets) voxelOffsets.reset(new VoxelOffsetType[points.size()]); + else voxelOffsets.reset(); + + const Index binLog2Dim = 5u; + // note: Bins span a (2^(binLog2Dim + bucketLog2Dim))^3 voxel region, + // i.e. bucketLog2Dim = 3 and binLog2Dim = 5 corresponds to a + // (2^8)^3 = 256^3 voxel region. + + + size_t numSegments = 0; + + boost::scoped_array::Ptr> indexSegments; + boost::scoped_array::Ptr> offestSegments; + + binAndSegment(points, xform, + indexSegments, offestSegments, numSegments, binLog2Dim, bucketLog2Dim, + voxelOffsets.get(), cellCenteredTransform); + + const tbb::blocked_range segmentRange(0, numSegments); + + using IndexArray = boost::scoped_array; + boost::scoped_array pageOffsetArrays(new IndexArray[numSegments]); + + const Index binVolume = 1u << (3u * binLog2Dim); + + tbb::parallel_for(segmentRange, OrderSegmentsOp + (indexSegments.get(), offestSegments.get(), pageOffsetArrays.get(), binVolume)); + + indexSegments.reset(); + + pageCount = 0; + for (size_t n = 0; n < numSegments; ++n) { + pageCount += pageOffsetArrays[n][0] - 1; + } + + pageOffsets.reset(new PointIndexType[pageCount + 1]); + + PointIndexType count = 0; + for (size_t n = 0, idx = 0; n < numSegments; ++n) { + + PointIndexType* offsets = pageOffsetArrays[n].get(); + size_t size = size_t(offsets[0]); + + for (size_t i = 1; i < size; ++i) { + pageOffsets[idx++] = count; + count += offsets[i]; + } + } + + pageOffsets[pageCount] = count; + + pointIndices.reset(new PointIndexType[points.size()]); + + std::vector indexArray; + indexArray.reserve(numSegments); + + PointIndexType* index = pointIndices.get(); + for (size_t n = 0; n < numSegments; ++n) { + indexArray.push_back(index); + index += offestSegments[n]->size(); + } + + tbb::parallel_for(segmentRange, + MoveSegmentDataOp(indexArray, offestSegments.get())); +} + + +} // namespace point_partitioner_internal + + +//////////////////////////////////////// + + +template +inline PointPartitioner::PointPartitioner() + : mPointIndices(nullptr) + , mVoxelOffsets(nullptr) + , mPageOffsets(nullptr) + , mPageCoordinates(nullptr) + , mPageCount(0) + , mUsingCellCenteredTransform(true) +{ +} + + +template +inline void +PointPartitioner::clear() +{ + mPageCount = 0; + mUsingCellCenteredTransform = true; + mPointIndices.reset(); + mVoxelOffsets.reset(); + mPageOffsets.reset(); + mPageCoordinates.reset(); +} + + +template +inline void +PointPartitioner::swap(PointPartitioner& rhs) +{ + const IndexType tmpLhsPageCount = mPageCount; + mPageCount = rhs.mPageCount; + rhs.mPageCount = tmpLhsPageCount; + + mPointIndices.swap(rhs.mPointIndices); + mVoxelOffsets.swap(rhs.mVoxelOffsets); + mPageOffsets.swap(rhs.mPageOffsets); + mPageCoordinates.swap(rhs.mPageCoordinates); + + bool lhsCellCenteredTransform = mUsingCellCenteredTransform; + mUsingCellCenteredTransform = rhs.mUsingCellCenteredTransform; + rhs.mUsingCellCenteredTransform = lhsCellCenteredTransform; +} + + +template +inline typename PointPartitioner::IndexIterator +PointPartitioner::indices(size_t n) const +{ + assert(bool(mPointIndices) && bool(mPageCount)); + return IndexIterator( + mPointIndices.get() + mPageOffsets[n], + mPointIndices.get() + mPageOffsets[n + 1]); +} + + +template +template +inline void +PointPartitioner::construct( + const PointArray& points, + const math::Transform& xform, + bool voxelOrder, + bool recordVoxelOffsets, + bool cellCenteredTransform) +{ + mUsingCellCenteredTransform = cellCenteredTransform; + + point_partitioner_internal::partition(points, xform, BucketLog2Dim, + mPointIndices, mPageOffsets, mPageCount, mVoxelOffsets, + (voxelOrder || recordVoxelOffsets), cellCenteredTransform); + + const tbb::blocked_range pageRange(0, mPageCount); + mPageCoordinates.reset(new Coord[mPageCount]); + + tbb::parallel_for(pageRange, + point_partitioner_internal::LeafNodeOriginOp + (mPageCoordinates, mPointIndices, mPageOffsets, points, xform, + BucketLog2Dim, cellCenteredTransform)); + + if (mVoxelOffsets && voxelOrder) { + tbb::parallel_for(pageRange, point_partitioner_internal::VoxelOrderOp< + IndexType, BucketLog2Dim>(mPointIndices, mPageOffsets, mVoxelOffsets)); + } + + if (mVoxelOffsets && !recordVoxelOffsets) { + mVoxelOffsets.reset(); + } +} + + +template +template +inline typename PointPartitioner::Ptr +PointPartitioner::create( + const PointArray& points, + const math::Transform& xform, + bool voxelOrder, + bool recordVoxelOffsets, + bool cellCenteredTransform) +{ + Ptr ret(new PointPartitioner()); + ret->construct(points, xform, voxelOrder, recordVoxelOffsets, cellCenteredTransform); + return ret; +} + + +//////////////////////////////////////// + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#endif // OPENVDB_TOOLS_POINT_PARTITIONER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PointScatter.h b/openvdb/tools/PointScatter.h new file mode 100644 index 00000000..7ad03433 --- /dev/null +++ b/openvdb/tools/PointScatter.h @@ -0,0 +1,421 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file tools/PointScatter.h +/// +/// @brief We offer three different algorithms (each in its own class) +/// for scattering of points in active voxels: +/// +/// 1) UniformPointScatter. Has two modes: Either randomly distributes +/// a fixed number of points into the active voxels, or the user can +/// specify a fixed probability of having a points per unit of volume. +/// +/// 2) DenseUniformPointScatter. Randomly distributes points into active +/// voxels using a fixed number of points per voxel. +/// +/// 3) NonIniformPointScatter. Define the local probability of having +/// a point in a voxel as the product of a global density and the +/// value of the voxel itself. + +#ifndef OPENVDB_TOOLS_POINT_SCATTER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POINT_SCATTER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// Forward declaration of base class +template +class BasePointScatter; + +/// @brief The two point scatters UniformPointScatter and +/// NonUniformPointScatter depend on the following two classes: +/// +/// The @c PointAccessorType template argument below refers to any class +/// with the following interface: +/// @code +/// class PointAccessor { +/// ... +/// public: +/// void add(const openvdb::Vec3R &pos);// appends point with world positions pos +/// }; +/// @endcode +/// +/// +/// The @c InterruptType template argument below refers to any class +/// with the following interface: +/// @code +/// class Interrupter { +/// ... +/// public: +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent=-1) // return true to break computation +///}; +/// @endcode +/// +/// @note If no template argument is provided for this InterruptType +/// the util::NullInterrupter is used which implies that all +/// interrupter calls are no-ops (i.e. incurs no computational overhead). + + +/// @brief Uniformly scatters points in the active voxels. +/// The point count is either explicitly defined or implicitly +/// through the specification of a global density (=points-per-volume) +/// +/// @note This uniform scattering technique assumes that the number of +/// points is generally smaller than the number of active voxels +/// (including virtual active voxels in active tiles). +template +class UniformPointScatter : public BasePointScatter +{ +public: + using BaseT = BasePointScatter; + + UniformPointScatter(PointAccessorType& points, + Index64 pointCount, + RandomGenerator& randGen, + double spread = 1.0, + InterruptType* interrupt = nullptr) + : BaseT(points, randGen, spread, interrupt) + , mTargetPointCount(pointCount) + , mPointsPerVolume(0.0f) + { + } + UniformPointScatter(PointAccessorType& points, + float pointsPerVolume, + RandomGenerator& randGen, + double spread = 1.0, + InterruptType* interrupt = nullptr) + : BaseT(points, randGen, spread, interrupt) + , mTargetPointCount(0) + , mPointsPerVolume(pointsPerVolume) + { + } + + /// This is the main functor method implementing the actual scattering of points. + template + bool operator()(const GridT& grid) + { + mVoxelCount = grid.activeVoxelCount(); + if (mVoxelCount == 0) return false; + + const auto voxelVolume = grid.transform().voxelVolume(); + if (mPointsPerVolume > 0) { + BaseT::start("Uniform scattering with fixed point density"); + mTargetPointCount = Index64(mPointsPerVolume * voxelVolume * double(mVoxelCount)); + } else if (mTargetPointCount > 0) { + BaseT::start("Uniform scattering with fixed point count"); + mPointsPerVolume = float(mTargetPointCount) / float(voxelVolume * double(mVoxelCount)); + } else { + return false; + } + + std::unique_ptr idList{new Index64[mTargetPointCount]}; + math::RandInt rand(BaseT::mRand01.engine(), 0, mVoxelCount-1); + for (Index64 i=0; i +class DenseUniformPointScatter : public BasePointScatter +{ +public: + using BaseT = BasePointScatter; + + DenseUniformPointScatter(PointAccessorType& points, + float pointsPerVoxel, + RandomGenerator& randGen, + double spread = 1.0, + InterruptType* interrupt = nullptr) + : BaseT(points, randGen, spread, interrupt) + , mPointsPerVoxel(pointsPerVoxel) + { + } + + /// This is the main functor method implementing the actual scattering of points. + template + bool operator()(const GridT& grid) + { + using ValueIter = typename GridT::ValueOnCIter; + if (mPointsPerVoxel < 1.0e-6) return false; + mVoxelCount = grid.activeVoxelCount(); + if (mVoxelCount == 0) return false; + BaseT::start("Dense uniform scattering with fixed point count"); + CoordBBox bbox; + const Vec3R offset(0.5, 0.5, 0.5); + + const int ppv = math::Floor(mPointsPerVoxel); + const double delta = mPointsPerVoxel - float(ppv); + const bool fractional = !math::isApproxZero(delta, 1.0e-6); + + for (ValueIter iter = grid.cbeginValueOn(); iter; ++iter) { + if (BaseT::interrupt()) return false; + if (iter.isVoxelValue()) {// a majority is expected to be voxels + const Vec3R dmin = iter.getCoord() - offset; + for (int n = 0; n != ppv; ++n) BaseT::addPoint(grid, dmin); + if (fractional && BaseT::getRand01() < delta) BaseT::addPoint(grid, dmin); + } else {// tiles contain multiple (virtual) voxels + iter.getBoundingBox(bbox); + const Coord size(bbox.extents()); + const Vec3R dmin = bbox.min() - offset; + const double d = mPointsPerVoxel * float(iter.getVoxelCount()); + const int m = math::Floor(d); + for (int n = 0; n != m; ++n) BaseT::addPoint(grid, dmin, size); + if (BaseT::getRand01() < d - m) BaseT::addPoint(grid, dmin, size); + } + }//loop over all the active voxels and tiles + //} + BaseT::end(); + return true; + } + + // The following methods should only be called after the + // the operator() method was called + void print(const std::string &name, std::ostream& os = std::cout) const + { + os << "Dense uniformly scattered " << mPointCount << " points into " << mVoxelCount + << " active voxels in \"" << name << "\" corresponding to " + << mPointsPerVoxel << " points per voxel." << std::endl; + } + + float getPointsPerVoxel() const { return mPointsPerVoxel; } + +private: + using BaseT::mPointCount; + using BaseT::mVoxelCount; + float mPointsPerVoxel; +}; // class DenseUniformPointScatter + +/// @brief Non-uniform scatters of point in the active voxels. +/// The local point count is implicitly defined as a product of +/// of a global density (called pointsPerVolume) and the local voxel +/// (or tile) value. +/// +/// @note This scattering technique can be significantly slower +/// than a uniform scattering since its computational complexity +/// is proportional to the active voxel (and tile) count. +template +class NonUniformPointScatter : public BasePointScatter +{ +public: + using BaseT = BasePointScatter; + + NonUniformPointScatter(PointAccessorType& points, + float pointsPerVolume, + RandomGenerator& randGen, + double spread = 1.0, + InterruptType* interrupt = nullptr) + : BaseT(points, randGen, spread, interrupt) + , mPointsPerVolume(pointsPerVolume)//note this is merely a + //multiplier for the local point density + { + } + + /// This is the main functor method implementing the actual scattering of points. + template + bool operator()(const GridT& grid) + { + if (mPointsPerVolume <= 0.0f) return false; + mVoxelCount = grid.activeVoxelCount(); + if (mVoxelCount == 0) return false; + BaseT::start("Non-uniform scattering with local point density"); + const Vec3d dim = grid.voxelSize(); + const double volumePerVoxel = dim[0]*dim[1]*dim[2], + pointsPerVoxel = mPointsPerVolume * volumePerVoxel; + CoordBBox bbox; + const Vec3R offset(0.5, 0.5, 0.5); + for (typename GridT::ValueOnCIter iter = grid.cbeginValueOn(); iter; ++iter) { + if (BaseT::interrupt()) return false; + const double d = double(*iter) * pointsPerVoxel * double(iter.getVoxelCount()); + const int n = int(d); + if (iter.isVoxelValue()) { // a majority is expected to be voxels + const Vec3R dmin =iter.getCoord() - offset; + for (int i = 0; i < n; ++i) BaseT::addPoint(grid, dmin); + if (BaseT::getRand01() < (d - n)) BaseT::addPoint(grid, dmin); + } else { // tiles contain multiple (virtual) voxels + iter.getBoundingBox(bbox); + const Coord size(bbox.extents()); + const Vec3R dmin = bbox.min() - offset; + for (int i = 0; i < n; ++i) BaseT::addPoint(grid, dmin, size); + if (BaseT::getRand01() < (d - n)) BaseT::addPoint(grid, dmin, size); + } + }//loop over all the active voxels and tiles + BaseT::end(); + return true; + } + + // The following methods should only be called after the + // the operator() method was called + void print(const std::string &name, std::ostream& os = std::cout) const + { + os << "Non-uniformly scattered " << mPointCount << " points into " << mVoxelCount + << " active voxels in \"" << name << "\"." << std::endl; + } + + float getPointPerVolume() const { return mPointsPerVolume; } + +private: + using BaseT::mPointCount; + using BaseT::mVoxelCount; + float mPointsPerVolume; + +}; // class NonUniformPointScatter + +/// Base class of all the point scattering classes defined above +template +class BasePointScatter +{ +public: + + Index64 getPointCount() const { return mPointCount; } + Index64 getVoxelCount() const { return mVoxelCount; } + +protected: + + PointAccessorType& mPoints; + InterruptType* mInterrupter; + Index64 mPointCount; + Index64 mVoxelCount; + Index64 mInterruptCount; + const double mSpread; + math::Rand01 mRand01; + + /// This is a base class so the constructor is protected + BasePointScatter(PointAccessorType& points, + RandomGenerator& randGen, + double spread, + InterruptType* interrupt = nullptr) + : mPoints(points) + , mInterrupter(interrupt) + , mPointCount(0) + , mVoxelCount(0) + , mInterruptCount(0) + , mSpread(math::Clamp01(spread)) + , mRand01(randGen) + { + } + + inline void start(const char* name) + { + if (mInterrupter) mInterrupter->start(name); + } + + inline void end() + { + if (mInterrupter) mInterrupter->end(); + } + + inline bool interrupt() + { + //only check interrupter for every 32'th call + return !(mInterruptCount++ & ((1<<5)-1)) && util::wasInterrupted(mInterrupter); + } + + /// @brief Return a random floating point number between zero and one + inline double getRand01() { return mRand01(); } + + /// @brief Return a random floating point number between 0.5 -+ mSpread/2 + inline double getRand() { return 0.5 + mSpread * (mRand01() - 0.5); } + + template + inline void addPoint(const GridT &grid, const Vec3R &dmin) + { + const Vec3R pos(dmin[0] + this->getRand(), + dmin[1] + this->getRand(), + dmin[2] + this->getRand()); + mPoints.add(grid.indexToWorld(pos)); + ++mPointCount; + } + + template + inline void addPoint(const GridT &grid, const Vec3R &dmin, const Coord &size) + { + const Vec3R pos(dmin[0] + size[0]*this->getRand(), + dmin[1] + size[1]*this->getRand(), + dmin[2] + size[2]*this->getRand()); + mPoints.add(grid.indexToWorld(pos)); + ++mPointCount; + } +};// class BasePointScatter + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POINT_SCATTER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PointsToMask.h b/openvdb/tools/PointsToMask.h new file mode 100644 index 00000000..592ab7a1 --- /dev/null +++ b/openvdb/tools/PointsToMask.h @@ -0,0 +1,252 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @author Ken Museth +/// +/// @file tools/PointsToMask.h +/// +/// @brief This tool produces a grid where every voxel that contains a +/// point is active. It employes thread-local storage for best performance. +/// +/// The @c PointListT template argument below refers to any class +/// with the following interface (see unittest/TestPointsToMask.cc +/// and SOP_OpenVDB_From_Particles.cc for practical examples): +/// @code +/// +/// class PointList { +/// ... +/// public: +/// +/// // Return the total number of particles in list. +/// size_t size() const; +/// +/// // Get the world space position of the nth particle. +/// void getPos(size_t n, Vec3R& xyz) const; +/// }; +/// @endcode +/// +/// @note See unittest/TestPointsToMask.cc for an example. +/// +/// The @c InterruptT template argument below refers to any class +/// with the following interface: +/// @code +/// class Interrupter { +/// ... +/// public: +/// void start(const char* name = nullptr) // called when computations begin +/// void end() // called when computations end +/// bool wasInterrupted(int percent = -1) // return true to break computation +/// }; +/// @endcode +/// +/// @note If no template argument is provided for this InterruptT +/// the util::NullInterrupter is used which implies that all +/// interrupter calls are no-ops (i.e. incurs no computational overhead). + +#ifndef OPENVDB_TOOLS_POINTSTOMASK_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POINTSTOMASK_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include // for MaskGrid +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +// Forward declaration of main class +template +class PointsToMask; + +/// @brief Makes every voxel of the @c grid active if it contains a point. +/// +/// @param points points that active the voxels of @c grid +/// @param grid on out its voxels with points are active +template +inline void +maskPoints(const PointListT& points, GridT& grid) +{ + PointsToMask tmp(grid, nullptr); + tmp.addPoints(points); +} + +/// @brief Return a MaskGrid where each binary voxel value +/// is on if the voxel contains one (or more) points (i.e. +/// the 3D position of a point is closer to this voxel than +/// any other voxels). +/// +/// @param points points that active the voxels in the returned grid. +/// @param xform transform from world space to voxels in grid space. +template +inline MaskGrid::Ptr +createPointMask(const PointListT& points, const math::Transform& xform) +{ + MaskGrid::Ptr grid = createGrid( false ); + grid->setTransform( xform.copy() ); + maskPoints( points, *grid ); + return grid; +} + +//////////////////////////////////////// + +/// @brief Makes every voxel of a grid active if it contains a point. +template +class PointsToMask +{ +public: + using ValueT = typename GridT::ValueType; + + /// @brief Constructor from a grid and optional interrupter + /// + /// @param grid Grid whoes voxels will have their state activated by points. + /// @param interrupter Optional interrupter to prematurely terminate execution. + explicit PointsToMask(GridT& grid, InterrupterT* interrupter = nullptr) + : mGrid(&grid) + , mInterrupter(interrupter) + { + } + + /// @brief Activates the state of any voxel in the input grid that contains a point. + /// + /// @param points List of points that active the voxels in the input grid. + /// @param grainSize Set the grain-size used for multi-threading. A value of 0 + /// disables multi-threading! + template + void addPoints(const PointListT& points, size_t grainSize = 1024) + { + if (mInterrupter) mInterrupter->start("PointsToMask: adding points"); + if (grainSize > 0) { + typename GridT::Ptr examplar = mGrid->copyWithNewTree(); + PoolType pool( *examplar );//thread local storage pool of grids + AddPoints tmp(points, pool, grainSize, *this ); + if ( this->interrupt() ) return; + ReducePool reducePool(pool, mGrid, size_t(0)); + } else { + const math::Transform& xform = mGrid->transform(); + typename GridT::Accessor acc = mGrid->getAccessor(); + Vec3R wPos; + for (size_t i = 0, n = points.size(); i < n; ++i) { + if ( this->interrupt() ) break; + points.getPos(i, wPos); + acc.setValueOn( xform.worldToIndexCellCentered( wPos ) ); + } + } + if (mInterrupter) mInterrupter->end(); + } + +private: + // Disallow copy construction and copy by assignment! + PointsToMask(const PointsToMask&);// not implemented + PointsToMask& operator=(const PointsToMask&);// not implemented + + bool interrupt() const + { + if (mInterrupter && util::wasInterrupted(mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return true; + } + return false; + } + + // Private struct that implements concurrent thread-local + // insersion of points into a grid + using PoolType = tbb::enumerable_thread_specific; + template struct AddPoints; + + // Private class that implements concurrent reduction of a thread-local pool + struct ReducePool; + + GridT* mGrid; + InterrupterT* mInterrupter; +};// PointsToMask + +// Private member class that implements concurrent thread-local +// insersion of points into a grid +template +template +struct PointsToMask::AddPoints +{ + AddPoints(const PointListT& points, + PoolType& pool, + size_t grainSize, + const PointsToMask& parent) + : mPoints(&points) + , mParent(&parent) + , mPool(&pool) + { + tbb::parallel_for(tbb::blocked_range(0, mPoints->size(), grainSize), *this); + } + void operator()(const tbb::blocked_range& range) const + { + if (mParent->interrupt()) return; + GridT& grid = mPool->local(); + const math::Transform& xform = grid.transform(); + typename GridT::Accessor acc = grid.getAccessor(); + Vec3R wPos; + for (size_t i=range.begin(), n=range.end(); i!=n; ++i) { + mPoints->getPos(i, wPos); + acc.setValueOn( xform.worldToIndexCellCentered( wPos ) ); + } + } + const PointListT* mPoints; + const PointsToMask* mParent; + PoolType* mPool; + +};// end of private member class AddPoints + +// Private member class that implements concurrent reduction of a thread-local pool +template +struct PointsToMask::ReducePool +{ + using VecT = std::vector; + using IterT = typename VecT::iterator; + using RangeT = tbb::blocked_range; + + ReducePool(PoolType& pool, GridT* grid, size_t grainSize = 1) + : mOwnsGrid(false) + , mGrid(grid) + { + if (grainSize == 0) { + for (typename PoolType::const_iterator i = pool.begin(); i != pool.end(); ++i) { + mGrid->topologyUnion(*i); + } + } else { + VecT grids( pool.size() ); + typename PoolType::iterator i = pool.begin(); + for (size_t j=0; j != pool.size(); ++i, ++j) grids[j] = &(*i); + tbb::parallel_reduce( RangeT( grids.begin(), grids.end(), grainSize ), *this ); + } + } + + ReducePool(const ReducePool&, tbb::split) + : mOwnsGrid(true) + , mGrid(new GridT()) + { + } + + ~ReducePool() { if (mOwnsGrid) delete mGrid; } + + void operator()(const RangeT& r) + { + for (IterT i=r.begin(); i!=r.end(); ++i) mGrid->topologyUnion( *(*i) ); + } + + void join(ReducePool& other) { mGrid->topologyUnion(*other.mGrid); } + + const bool mOwnsGrid; + GridT* mGrid; +};// end of private member class ReducePool + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POINTSTOMASK_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PoissonSolver.h b/openvdb/tools/PoissonSolver.h new file mode 100644 index 00000000..1de2a1a5 --- /dev/null +++ b/openvdb/tools/PoissonSolver.h @@ -0,0 +1,842 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file PoissonSolver.h +/// +/// @authors D.J. Hill, Peter Cucka +/// +/// @brief Solve Poisson's equation ∇2x = b +/// for x, where @e b is a vector comprising the values of all of the active voxels +/// in a grid. +/// +/// @par Example: +/// Solve for the pressure in a cubic tank of liquid, assuming uniform boundary conditions: +/// @code +/// FloatTree source(/*background=*/0.0f); +/// // Activate voxels to indicate that they contain liquid. +/// source.fill(CoordBBox(Coord(0, -10, 0), Coord(10, 0, 10)), /*value=*/0.0f); +/// +/// math::pcg::State state = math::pcg::terminationDefaults(); +/// FloatTree::Ptr solution = tools::poisson::solve(source, state); +/// @endcode +/// +/// @par Example: +/// Solve for the pressure, P, in a cubic tank of liquid that is open at the top. +/// Boundary conditions are P = 0 at the top, +/// ∂P/∂y = −1 at the bottom +/// and ∂P/∂x = 0 at the sides: +/// 
+///                P = 0
+///             +--------+ (N,0,N)
+///            /|       /|
+///   (0,0,0) +--------+ |
+///           | |      | | dP/dx = 0
+/// dP/dx = 0 | +------|-+
+///           |/       |/
+///  (0,-N,0) +--------+ (N,-N,0)
+///           dP/dy = -1
+///
+/// @code +/// const int N = 10; +/// DoubleTree source(/*background=*/0.0); +/// // Activate voxels to indicate that they contain liquid. +/// source.fill(CoordBBox(Coord(0, -N, 0), Coord(N, 0, N)), /*value=*/0.0); +/// +/// auto boundary = [](const openvdb::Coord& ijk, const openvdb::Coord& neighbor, +/// double& source, double& diagonal) +/// { +/// if (neighbor.x() == ijk.x() && neighbor.z() == ijk.z()) { +/// if (neighbor.y() < ijk.y()) source -= 1.0; +/// else diagonal -= 1.0; +/// } +/// }; +/// +/// math::pcg::State state = math::pcg::terminationDefaults(); +/// util::NullInterrupter interrupter; +/// +/// DoubleTree::Ptr solution = tools::poisson::solveWithBoundaryConditions( +/// source, boundary, state, interrupter); +/// @endcode + +#ifndef OPENVDB_TOOLS_POISSONSOLVER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POISSONSOLVER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include "Morphology.h" // for erodeVoxels + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { +namespace poisson { + +// This type should be at least as wide as math::pcg::SizeType. +using VIndex = Int32; + +/// The type of a matrix used to represent a three-dimensional %Laplacian operator +using LaplacianMatrix = math::pcg::SparseStencilMatrix; + + +//@{ +/// @brief Solve ∇2x = b for x, +/// where @e b is a vector comprising the values of all of the active voxels +/// in the input tree. +/// @return a new tree, with the same active voxel topology as the input tree, +/// whose voxel values are the elements of the solution vector x. +/// @details On input, the State object should specify convergence criteria +/// (minimum error and maximum number of iterations); on output, it gives +/// the actual termination conditions. +/// @details The solution is computed using the conjugate gradient method +/// with (where possible) incomplete Cholesky preconditioning, falling back +/// to Jacobi preconditioning. +/// @sa solveWithBoundaryConditions +template +inline typename TreeType::Ptr +solve(const TreeType&, math::pcg::State&, bool staggered = false); + +template +inline typename TreeType::Ptr +solve(const TreeType&, math::pcg::State&, Interrupter&, bool staggered = false); +//@} + + +//@{ +/// @brief Solve ∇2x = b for x +/// with user-specified boundary conditions, where @e b is a vector comprising +/// the values of all of the active voxels in the input tree or domain mask if provided +/// @return a new tree, with the same active voxel topology as the input tree, +/// whose voxel values are the elements of the solution vector x. +/// @details On input, the State object should specify convergence criteria +/// (minimum error and maximum number of iterations); on output, it gives +/// the actual termination conditions. +/// @details The solution is computed using the conjugate gradient method with +/// the specified type of preconditioner (default: incomplete Cholesky), +/// falling back to Jacobi preconditioning if necessary. +/// @details Each thread gets its own copy of the BoundaryOp, which should be +/// a functor of the form +/// @code +/// struct BoundaryOp { +/// using ValueType = LaplacianMatrix::ValueType; +/// void operator()( +/// const Coord& ijk, // coordinates of a boundary voxel +/// const Coord& ijkNeighbor, // coordinates of an exterior neighbor of ijk +/// ValueType& source, // element of b corresponding to ijk +/// ValueType& diagonal // element of Laplacian matrix corresponding to ijk +/// ) const; +/// }; +/// @endcode +/// The functor is called for each of the exterior neighbors of each boundary voxel @ijk, +/// and it must specify a boundary condition for @ijk by modifying one or both of two +/// provided values: the entry in the source vector @e b corresponding to @ijk and +/// the weighting coefficient for @ijk in the Laplacian operator matrix. +/// +/// @sa solve +template +inline typename TreeType::Ptr +solveWithBoundaryConditions( + const TreeType&, + const BoundaryOp&, + math::pcg::State&, + Interrupter&, + bool staggered = false); + +template< + typename PreconditionerType, + typename TreeType, + typename BoundaryOp, + typename Interrupter> +inline typename TreeType::Ptr +solveWithBoundaryConditionsAndPreconditioner( + const TreeType&, + const BoundaryOp&, + math::pcg::State&, + Interrupter&, + bool staggered = false); + +template< + typename PreconditionerType, + typename TreeType, + typename DomainTreeType, + typename BoundaryOp, + typename Interrupter> +inline typename TreeType::Ptr +solveWithBoundaryConditionsAndPreconditioner( + const TreeType&, + const DomainTreeType&, + const BoundaryOp&, + math::pcg::State&, + Interrupter&, + bool staggered = false); +//@} + + +/// @name Low-level functions +//@{ +// The following are low-level routines that can be used to assemble custom solvers. + +/// @brief Overwrite each active voxel in the given scalar tree +/// with a sequential index, starting from zero. +template +inline void populateIndexTree(VIndexTreeType&); + +/// @brief Iterate over the active voxels of the input tree and for each one +/// assign its index in the iteration sequence to the corresponding voxel +/// of an integer-valued output tree. +template +inline typename TreeType::template ValueConverter::Type::Ptr +createIndexTree(const TreeType&); + + +/// @brief Return a vector of the active voxel values of the scalar-valued @a source tree. +/// @details The nth element of the vector corresponds to the voxel whose value +/// in the @a index tree is @e n. +/// @param source a tree with a scalar value type +/// @param index a tree of the same configuration as @a source but with +/// value type VIndex that maps voxels to elements of the output vector +template +inline typename math::pcg::Vector::Ptr +createVectorFromTree( + const SourceTreeType& source, + const typename SourceTreeType::template ValueConverter::Type& index); + + +/// @brief Return a tree with the same active voxel topology as the @a index tree +/// but whose voxel values are taken from the the given vector. +/// @details The voxel whose value in the @a index tree is @e n gets assigned +/// the nth element of the vector. +/// @param index a tree with value type VIndex that maps voxels to elements of @a values +/// @param values a vector of values with which to populate the active voxels of the output tree +/// @param background the value for the inactive voxels of the output tree +template +inline typename VIndexTreeType::template ValueConverter::Type::Ptr +createTreeFromVector( + const math::pcg::Vector& values, + const VIndexTreeType& index, + const TreeValueType& background); + + +/// @brief Generate a sparse matrix of the index-space (Δx = 1) %Laplacian operator +/// using second-order finite differences. +/// @details This construction assumes homogeneous Dirichlet boundary conditions +/// (exterior grid points are zero). +template +inline LaplacianMatrix::Ptr +createISLaplacian( + const typename BoolTreeType::template ValueConverter::Type& vectorIndexTree, + const BoolTreeType& interiorMask, + bool staggered = false); + + +/// @brief Generate a sparse matrix of the index-space (Δx = 1) %Laplacian operator +/// with user-specified boundary conditions using second-order finite differences. +/// @details Each thread gets its own copy of @a boundaryOp, which should be +/// a functor of the form +/// @code +/// struct BoundaryOp { +/// using ValueType = LaplacianMatrix::ValueType; +/// void operator()( +/// const Coord& ijk, // coordinates of a boundary voxel +/// const Coord& ijkNeighbor, // coordinates of an exterior neighbor of ijk +/// ValueType& source, // element of source vector corresponding to ijk +/// ValueType& diagonal // element of Laplacian matrix corresponding to ijk +/// ) const; +/// }; +/// @endcode +/// The functor is called for each of the exterior neighbors of each boundary voxel @ijk, +/// and it must specify a boundary condition for @ijk by modifying one or both of two +/// provided values: an entry in the given @a source vector corresponding to @ijk and +/// the weighting coefficient for @ijk in the %Laplacian matrix. +template +inline LaplacianMatrix::Ptr +createISLaplacianWithBoundaryConditions( + const typename BoolTreeType::template ValueConverter::Type& vectorIndexTree, + const BoolTreeType& interiorMask, + const BoundaryOp& boundaryOp, + typename math::pcg::Vector& source, + bool staggered = false); + + +/// @brief Dirichlet boundary condition functor +/// @details This is useful in describing fluid/air interfaces, where the pressure +/// of the air is assumed to be zero. +template +struct DirichletBoundaryOp { + inline void operator()(const Coord&, const Coord&, ValueType&, ValueType& diag) const { + // Exterior neighbors are empty, so decrement the weighting coefficient + // as for interior neighbors but leave the source vector unchanged. + diag -= 1; + } +}; + +//@} + + +//////////////////////////////////////// + + +namespace internal { + +/// @brief Functor for use with LeafManager::foreach() to populate an array +/// with per-leaf active voxel counts +template +struct LeafCountOp +{ + VIndex* count; + LeafCountOp(VIndex* count_): count(count_) {} + void operator()(const LeafType& leaf, size_t leafIdx) const { + count[leafIdx] = static_cast(leaf.onVoxelCount()); + } +}; + + +/// @brief Functor for use with LeafManager::foreach() to populate +/// active leaf voxels with sequential indices +template +struct LeafIndexOp +{ + const VIndex* count; + LeafIndexOp(const VIndex* count_): count(count_) {} + void operator()(LeafType& leaf, size_t leafIdx) const { + VIndex idx = (leafIdx == 0) ? 0 : count[leafIdx - 1]; + for (typename LeafType::ValueOnIter it = leaf.beginValueOn(); it; ++it) { + it.setValue(idx++); + } + } +}; + +} // namespace internal + + +template +inline void +populateIndexTree(VIndexTreeType& result) +{ + using LeafT = typename VIndexTreeType::LeafNodeType; + using LeafMgrT = typename tree::LeafManager; + + // Linearize the tree. + LeafMgrT leafManager(result); + const size_t leafCount = leafManager.leafCount(); + + if (leafCount == 0) return; + + // Count the number of active voxels in each leaf node. + std::unique_ptr perLeafCount(new VIndex[leafCount]); + VIndex* perLeafCountPtr = perLeafCount.get(); + leafManager.foreach(internal::LeafCountOp(perLeafCountPtr)); + + // The starting index for each leaf node is the total number + // of active voxels in all preceding leaf nodes. + for (size_t i = 1; i < leafCount; ++i) { + perLeafCount[i] += perLeafCount[i - 1]; + } + + // The last accumulated value should be the total of all active voxels. + assert(Index64(perLeafCount[leafCount-1]) == result.activeVoxelCount()); + + // Parallelize over the leaf nodes of the tree, storing a unique index + // in each active voxel. + leafManager.foreach(internal::LeafIndexOp(perLeafCountPtr)); +} + + +template +inline typename TreeType::template ValueConverter::Type::Ptr +createIndexTree(const TreeType& tree) +{ + using VIdxTreeT = typename TreeType::template ValueConverter::Type; + + // Construct an output tree with the same active voxel topology as the input tree. + const VIndex invalidIdx = -1; + typename VIdxTreeT::Ptr result( + new VIdxTreeT(tree, /*background=*/invalidIdx, TopologyCopy())); + + // All active voxels are degrees of freedom, including voxels contained in active tiles. + result->voxelizeActiveTiles(); + + populateIndexTree(*result); + + return result; +} + + +//////////////////////////////////////// + + +namespace internal { + +/// @brief Functor for use with LeafManager::foreach() to populate a vector +/// with the values of a tree's active voxels +template +struct CopyToVecOp +{ + using VIdxTreeT = typename SourceTreeType::template ValueConverter::Type; + using VIdxLeafT = typename VIdxTreeT::LeafNodeType; + using LeafT = typename SourceTreeType::LeafNodeType; + using TreeValueT = typename SourceTreeType::ValueType; + using VectorT = typename math::pcg::Vector; + + const SourceTreeType* tree; + VectorT* vector; + + CopyToVecOp(const SourceTreeType& t, VectorT& v): tree(&t), vector(&v) {} + + void operator()(const VIdxLeafT& idxLeaf, size_t /*leafIdx*/) const + { + VectorT& vec = *vector; + if (const LeafT* leaf = tree->probeLeaf(idxLeaf.origin())) { + // If a corresponding leaf node exists in the source tree, + // copy voxel values from the source node to the output vector. + for (typename VIdxLeafT::ValueOnCIter it = idxLeaf.cbeginValueOn(); it; ++it) { + vec[*it] = leaf->getValue(it.pos()); + } + } else { + // If no corresponding leaf exists in the source tree, + // fill the vector with a uniform value. + const TreeValueT& value = tree->getValue(idxLeaf.origin()); + for (typename VIdxLeafT::ValueOnCIter it = idxLeaf.cbeginValueOn(); it; ++it) { + vec[*it] = value; + } + } + } +}; + +} // namespace internal + + +template +inline typename math::pcg::Vector::Ptr +createVectorFromTree(const SourceTreeType& tree, + const typename SourceTreeType::template ValueConverter::Type& idxTree) +{ + using VIdxTreeT = typename SourceTreeType::template ValueConverter::Type; + using VIdxLeafMgrT = tree::LeafManager; + using VectorT = typename math::pcg::Vector; + + // Allocate the vector. + const size_t numVoxels = idxTree.activeVoxelCount(); + typename VectorT::Ptr result(new VectorT(static_cast(numVoxels))); + + // Parallelize over the leaf nodes of the index tree, filling the output vector + // with values from corresponding voxels of the source tree. + VIdxLeafMgrT leafManager(idxTree); + leafManager.foreach(internal::CopyToVecOp(tree, *result)); + + return result; +} + + +//////////////////////////////////////// + + +namespace internal { + +/// @brief Functor for use with LeafManager::foreach() to populate a tree +/// with values from a vector +template +struct CopyFromVecOp +{ + using OutTreeT = typename VIndexTreeType::template ValueConverter::Type; + using OutLeafT = typename OutTreeT::LeafNodeType; + using VIdxLeafT = typename VIndexTreeType::LeafNodeType; + using VectorT = typename math::pcg::Vector; + + const VectorT* vector; + OutTreeT* tree; + + CopyFromVecOp(const VectorT& v, OutTreeT& t): vector(&v), tree(&t) {} + + void operator()(const VIdxLeafT& idxLeaf, size_t /*leafIdx*/) const + { + const VectorT& vec = *vector; + OutLeafT* leaf = tree->probeLeaf(idxLeaf.origin()); + assert(leaf != nullptr); + for (typename VIdxLeafT::ValueOnCIter it = idxLeaf.cbeginValueOn(); it; ++it) { + leaf->setValueOnly(it.pos(), static_cast(vec[*it])); + } + } +}; + +} // namespace internal + + +template +inline typename VIndexTreeType::template ValueConverter::Type::Ptr +createTreeFromVector( + const math::pcg::Vector& vector, + const VIndexTreeType& idxTree, + const TreeValueType& background) +{ + using OutTreeT = typename VIndexTreeType::template ValueConverter::Type; + using VIdxLeafMgrT = typename tree::LeafManager; + + // Construct an output tree with the same active voxel topology as the index tree. + typename OutTreeT::Ptr result(new OutTreeT(idxTree, background, TopologyCopy())); + OutTreeT& tree = *result; + + // Parallelize over the leaf nodes of the index tree, populating voxels + // of the output tree with values from the input vector. + VIdxLeafMgrT leafManager(idxTree); + leafManager.foreach( + internal::CopyFromVecOp(vector, tree)); + + return result; +} + + +//////////////////////////////////////// + + +namespace internal { + +/// Functor for use with LeafManager::foreach() to populate a sparse %Laplacian matrix +template +struct ISStaggeredLaplacianOp +{ + using VIdxTreeT = typename BoolTreeType::template ValueConverter::Type; + using VIdxLeafT = typename VIdxTreeT::LeafNodeType; + using ValueT = LaplacianMatrix::ValueType; + using VectorT = typename math::pcg::Vector; + + LaplacianMatrix* laplacian; + const VIdxTreeT* idxTree; + const BoolTreeType* interiorMask; + const BoundaryOp boundaryOp; + VectorT* source; + + ISStaggeredLaplacianOp(LaplacianMatrix& m, const VIdxTreeT& idx, + const BoolTreeType& mask, const BoundaryOp& op, VectorT& src): + laplacian(&m), idxTree(&idx), interiorMask(&mask), boundaryOp(op), source(&src) {} + + void operator()(const VIdxLeafT& idxLeaf, size_t /*leafIdx*/) const + { + // Local accessors + typename tree::ValueAccessor interior(*interiorMask); + typename tree::ValueAccessor vectorIdx(*idxTree); + + Coord ijk; + VIndex column; + const ValueT diagonal = -6.f, offDiagonal = 1.f; + + // Loop over active voxels in this leaf. + for (typename VIdxLeafT::ValueOnCIter it = idxLeaf.cbeginValueOn(); it; ++it) { + assert(it.getValue() > -1); + const math::pcg::SizeType rowNum = static_cast(it.getValue()); + + LaplacianMatrix::RowEditor row = laplacian->getRowEditor(rowNum); + + ijk = it.getCoord(); + if (interior.isValueOn(ijk)) { + // The current voxel is an interior voxel. + // All of its neighbors are in the solution domain. + + // -x direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(-1, 0, 0)), offDiagonal); + // -y direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(0, -1, 0)), offDiagonal); + // -z direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(0, 0, -1)), offDiagonal); + // diagonal + row.setValue(rowNum, diagonal); + // +z direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(0, 0, 1)), offDiagonal); + // +y direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(0, 1, 0)), offDiagonal); + // +x direction + row.setValue(vectorIdx.getValue(ijk.offsetBy(1, 0, 0)), offDiagonal); + + } else { + // The current voxel is a boundary voxel. + // At least one of its neighbors is outside the solution domain. + + ValueT modifiedDiagonal = 0.f; + + // -x direction + if (vectorIdx.probeValue(ijk.offsetBy(-1, 0, 0), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(-1, 0, 0), source->at(rowNum), modifiedDiagonal); + } + // -y direction + if (vectorIdx.probeValue(ijk.offsetBy(0, -1, 0), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(0, -1, 0), source->at(rowNum), modifiedDiagonal); + } + // -z direction + if (vectorIdx.probeValue(ijk.offsetBy(0, 0, -1), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(0, 0, -1), source->at(rowNum), modifiedDiagonal); + } + // +z direction + if (vectorIdx.probeValue(ijk.offsetBy(0, 0, 1), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(0, 0, 1), source->at(rowNum), modifiedDiagonal); + } + // +y direction + if (vectorIdx.probeValue(ijk.offsetBy(0, 1, 0), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(0, 1, 0), source->at(rowNum), modifiedDiagonal); + } + // +x direction + if (vectorIdx.probeValue(ijk.offsetBy(1, 0, 0), column)) { + row.setValue(column, offDiagonal); + modifiedDiagonal -= 1; + } else { + boundaryOp(ijk, ijk.offsetBy(1, 0, 0), source->at(rowNum), modifiedDiagonal); + } + // diagonal + row.setValue(rowNum, modifiedDiagonal); + } + } // end loop over voxels + } +}; + + +// Stencil 1 is the correct stencil, but stencil 2 requires +// half as many comparisons and produces smoother results at boundaries. +//#define OPENVDB_TOOLS_POISSON_LAPLACIAN_STENCIL 1 +#define OPENVDB_TOOLS_POISSON_LAPLACIAN_STENCIL 2 + +/// Functor for use with LeafManager::foreach() to populate a sparse %Laplacian matrix +template +struct ISLaplacianOp +{ + using VIdxLeafT = typename VIdxTreeT::LeafNodeType; + using ValueT = LaplacianMatrix::ValueType; + using VectorT = typename math::pcg::Vector; + + LaplacianMatrix* laplacian; + const VIdxTreeT* idxTree; + const BoundaryOp boundaryOp; + VectorT* source; + + ISLaplacianOp(LaplacianMatrix& m, const VIdxTreeT& idx, const BoundaryOp& op, VectorT& src): + laplacian(&m), idxTree(&idx), boundaryOp(op), source(&src) {} + + void operator()(const VIdxLeafT& idxLeaf, size_t /*leafIdx*/) const + { + typename tree::ValueAccessor vectorIdx(*idxTree); + + const int kNumOffsets = 6; + const Coord ijkOffset[kNumOffsets] = { +#if OPENVDB_TOOLS_POISSON_LAPLACIAN_STENCIL == 1 + Coord(-1,0,0), Coord(1,0,0), Coord(0,-1,0), Coord(0,1,0), Coord(0,0,-1), Coord(0,0,1) +#else + Coord(-2,0,0), Coord(2,0,0), Coord(0,-2,0), Coord(0,2,0), Coord(0,0,-2), Coord(0,0,2) +#endif + }; + + // For each active voxel in this leaf... + for (typename VIdxLeafT::ValueOnCIter it = idxLeaf.cbeginValueOn(); it; ++it) { + assert(it.getValue() > -1); + + const Coord ijk = it.getCoord(); + const math::pcg::SizeType rowNum = static_cast(it.getValue()); + + LaplacianMatrix::RowEditor row = laplacian->getRowEditor(rowNum); + + ValueT modifiedDiagonal = 0.f; + + // For each of the neighbors of the voxel at (i,j,k)... + for (int dir = 0; dir < kNumOffsets; ++dir) { + const Coord neighbor = ijk + ijkOffset[dir]; + VIndex column; + // For collocated vector grids, the central differencing stencil requires + // access to neighbors at a distance of two voxels in each direction + // (-x, +x, -y, +y, -z, +z). +#if OPENVDB_TOOLS_POISSON_LAPLACIAN_STENCIL == 1 + const bool ijkIsInterior = (vectorIdx.probeValue(neighbor + ijkOffset[dir], column) + && vectorIdx.isValueOn(neighbor)); +#else + const bool ijkIsInterior = vectorIdx.probeValue(neighbor, column); +#endif + if (ijkIsInterior) { + // If (i,j,k) is sufficiently far away from the exterior, + // set its weight to one and adjust the center weight accordingly. + row.setValue(column, 1.f); + modifiedDiagonal -= 1.f; + } else { + // If (i,j,k) is adjacent to or one voxel away from the exterior, + // invoke the boundary condition functor. + boundaryOp(ijk, neighbor, source->at(rowNum), modifiedDiagonal); + } + } + // Set the (possibly modified) weight for the voxel at (i,j,k). + row.setValue(rowNum, modifiedDiagonal); + } + } +}; + +} // namespace internal + + +template +inline LaplacianMatrix::Ptr +createISLaplacian(const typename BoolTreeType::template ValueConverter::Type& idxTree, + const BoolTreeType& interiorMask, bool staggered) +{ + using ValueT = LaplacianMatrix::ValueType; + math::pcg::Vector unused( + static_cast(idxTree.activeVoxelCount())); + DirichletBoundaryOp op; + return createISLaplacianWithBoundaryConditions(idxTree, interiorMask, op, unused, staggered); +} + + +template +inline LaplacianMatrix::Ptr +createISLaplacianWithBoundaryConditions( + const typename BoolTreeType::template ValueConverter::Type& idxTree, + const BoolTreeType& interiorMask, + const BoundaryOp& boundaryOp, + typename math::pcg::Vector& source, + bool staggered) +{ + using VIdxTreeT = typename BoolTreeType::template ValueConverter::Type; + using VIdxLeafMgrT = typename tree::LeafManager; + + // The number of active voxels is the number of degrees of freedom. + const Index64 numDoF = idxTree.activeVoxelCount(); + + // Construct the matrix. + LaplacianMatrix::Ptr laplacianPtr( + new LaplacianMatrix(static_cast(numDoF))); + LaplacianMatrix& laplacian = *laplacianPtr; + + // Populate the matrix using a second-order, 7-point CD stencil. + VIdxLeafMgrT idxLeafManager(idxTree); + if (staggered) { + idxLeafManager.foreach(internal::ISStaggeredLaplacianOp( + laplacian, idxTree, interiorMask, boundaryOp, source)); + } else { + idxLeafManager.foreach(internal::ISLaplacianOp( + laplacian, idxTree, boundaryOp, source)); + } + + return laplacianPtr; +} + + +//////////////////////////////////////// + + +template +inline typename TreeType::Ptr +solve(const TreeType& inTree, math::pcg::State& state, bool staggered) +{ + util::NullInterrupter interrupter; + return solve(inTree, state, interrupter, staggered); +} + + +template +inline typename TreeType::Ptr +solve(const TreeType& inTree, math::pcg::State& state, Interrupter& interrupter, bool staggered) +{ + DirichletBoundaryOp boundaryOp; + return solveWithBoundaryConditions(inTree, boundaryOp, state, interrupter, staggered); +} + + +template +inline typename TreeType::Ptr +solveWithBoundaryConditions(const TreeType& inTree, const BoundaryOp& boundaryOp, + math::pcg::State& state, Interrupter& interrupter, bool staggered) +{ + using DefaultPrecondT = math::pcg::IncompleteCholeskyPreconditioner; + return solveWithBoundaryConditionsAndPreconditioner( + inTree, boundaryOp, state, interrupter, staggered); +} + + +template< + typename PreconditionerType, + typename TreeType, + typename BoundaryOp, + typename Interrupter> +inline typename TreeType::Ptr +solveWithBoundaryConditionsAndPreconditioner( + const TreeType& inTree, + const BoundaryOp& boundaryOp, + math::pcg::State& state, + Interrupter& interrupter, + bool staggered) +{ + return solveWithBoundaryConditionsAndPreconditioner( + /*source=*/inTree, /*domain mask=*/inTree, boundaryOp, state, interrupter, staggered); +} + +template< + typename PreconditionerType, + typename TreeType, + typename DomainTreeType, + typename BoundaryOp, + typename Interrupter> +inline typename TreeType::Ptr +solveWithBoundaryConditionsAndPreconditioner( + const TreeType& inTree, + const DomainTreeType& domainMask, + const BoundaryOp& boundaryOp, + math::pcg::State& state, + Interrupter& interrupter, + bool staggered) +{ + using TreeValueT = typename TreeType::ValueType; + using VecValueT = LaplacianMatrix::ValueType; + using VectorT = typename math::pcg::Vector; + using VIdxTreeT = typename TreeType::template ValueConverter::Type; + using MaskTreeT = typename TreeType::template ValueConverter::Type; + + // 1. Create a mapping from active voxels of the input tree to elements of a vector. + typename VIdxTreeT::ConstPtr idxTree = createIndexTree(domainMask); + + // 2. Populate a vector with values from the input tree. + typename VectorT::Ptr b = createVectorFromTree(inTree, *idxTree); + + // 3. Create a mask of the interior voxels of the input tree (from the densified index tree). + /// @todo Is this really needed? + typename MaskTreeT::Ptr interiorMask( + new MaskTreeT(*idxTree, /*background=*/false, TopologyCopy())); + tools::erodeVoxels(*interiorMask, /*iterations=*/1, tools::NN_FACE); + + // 4. Create the Laplacian matrix. + LaplacianMatrix::Ptr laplacian = createISLaplacianWithBoundaryConditions( + *idxTree, *interiorMask, boundaryOp, *b, staggered); + + // 5. Solve the Poisson equation. + laplacian->scale(-1.0); // matrix is negative-definite; solve -M x = -b + b->scale(-1.0); + typename VectorT::Ptr x(new VectorT(b->size(), zeroVal())); + typename math::pcg::Preconditioner::Ptr precond( + new PreconditionerType(*laplacian)); + if (!precond->isValid()) { + precond.reset(new math::pcg::JacobiPreconditioner(*laplacian)); + } + + state = math::pcg::solve(*laplacian, *b, *x, *precond, interrupter, state); + + // 6. Populate the output tree with values from the solution vector. + /// @todo if (state.success) ... ? + return createTreeFromVector(*x, *idxTree, /*background=*/zeroVal()); +} + +} // namespace poisson +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POISSONSOLVER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/PotentialFlow.h b/openvdb/tools/PotentialFlow.h new file mode 100644 index 00000000..c918c33e --- /dev/null +++ b/openvdb/tools/PotentialFlow.h @@ -0,0 +1,395 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tools/PotentialFlow.h +/// +/// @brief Tools for creating potential flow fields through solving Laplace's equation +/// +/// @authors Todd Keeler, Dan Bailey + +#ifndef OPENVDB_TOOLS_POTENTIAL_FLOW_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_POTENTIAL_FLOW_HAS_BEEN_INCLUDED + +#include + +#include "GridOperators.h" +#include "GridTransformer.h" +#include "Mask.h" // interiorMask +#include "Morphology.h" // dilateVoxels, erodeVoxels +#include "PoissonSolver.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Metafunction to convert a vector-valued grid type to a scalar grid type +template +struct VectorToScalarGrid { + using Type = + typename VecGridT::template ValueConverter::Type; + using Ptr = typename Type::Ptr; + using ConstPtr = typename Type::ConstPtr; +}; + + +/// @brief Construct a mask for the Potential Flow domain. +/// @details For a level set, this represents a rebuilt exterior narrow band. +/// For any other grid it is a new region that surrounds the active voxels. +/// @param grid source grid to use for computing the mask +/// @param dilation dilation in voxels of the source grid to form the new potential flow mask +template::Type> +inline typename MaskT::Ptr +createPotentialFlowMask(const GridT& grid, int dilation = 5); + + +/// @brief Create a Potential Flow velocities grid for the Neumann boundary. +/// @param collider a level set that represents the boundary +/// @param domain a mask to represent the potential flow domain +/// @param boundaryVelocity an optional grid pointer to stores the velocities of the boundary +/// @param backgroundVelocity a background velocity value +/// @details Typically this method involves supplying a velocity grid for the +/// collider boundary, however it can also be used for a global wind field +/// around the collider by supplying an empty boundary Velocity and a +/// non-zero background velocity. +template +inline typename GridT::template ValueConverter::Type::Ptr +createPotentialFlowNeumannVelocities(const GridT& collider, const MaskT& domain, + const typename GridT::template ValueConverter::Type::ConstPtr boundaryVelocity, + const Vec3T& backgroundVelocity); + + +/// @brief Compute the Potential on the domain using the Neumann boundary conditions on +/// solid boundaries +/// @param domain a mask to represent the domain in which to perform the solve +/// @param neumann the topology of this grid defines where the solid boundaries are and grid +/// values give the Neumann boundaries that should be applied there +/// @param state the solver parameters for computing the solution +/// @param interrupter pointer to an optional interrupter adhering to the +/// util::NullInterrupter interface +/// @details On input, the State object should specify convergence criteria +/// (minimum error and maximum number of iterations); on output, it gives +/// the actual termination conditions. +template +inline typename VectorToScalarGrid::Ptr +computeScalarPotential(const MaskT& domain, const Vec3GridT& neumann, math::pcg::State& state, + InterrupterT* interrupter = nullptr); + + +/// @brief Compute a vector Flow Field comprising the gradient of the potential with Neumann +/// boundary conditions applied +/// @param potential scalar potential, typically computed from computeScalarPotential() +/// @param neumann the topology of this grid defines where the solid boundaries are and grid +/// values give the Neumann boundaries that should be applied there +/// @param backgroundVelocity a background velocity value +template +inline typename Vec3GridT::Ptr +computePotentialFlow(const typename VectorToScalarGrid::Type& potential, + const Vec3GridT& neumann, + const typename Vec3GridT::ValueType backgroundVelocity = + zeroVal()); + + +////////////////////////////////////////////////////////// + + +namespace potential_flow_internal { + + +/// @private +// helper function for retrieving a mask that comprises the outer-most layer of voxels +template +inline typename GridT::TreeType::template ValueConverter::Type::Ptr +extractOuterVoxelMask(GridT& inGrid) +{ + using MaskTreeT = typename GridT::TreeType::template ValueConverter::Type; + typename MaskTreeT::Ptr interiorMask(new MaskTreeT(inGrid.tree(), false, TopologyCopy())); + typename MaskTreeT::Ptr boundaryMask(new MaskTreeT(inGrid.tree(), false, TopologyCopy())); + + erodeVoxels(*interiorMask, 1, NN_FACE); + boundaryMask->topologyDifference(*interiorMask); + return boundaryMask; +} + + +// computes Neumann velocities through sampling the gradient and velocities +template +struct ComputeNeumannVelocityOp +{ + using ValueT = typename Vec3GridT::ValueType; + using VelocityAccessor = typename Vec3GridT::ConstAccessor; + using VelocitySamplerT = GridSampler< + typename Vec3GridT::ConstAccessor, BoxSampler>; + using GradientValueT = typename GradientT::TreeType::ValueType; + + ComputeNeumannVelocityOp( const GradientT& gradient, + const Vec3GridT& velocity, + const ValueT& backgroundVelocity) + : mGradient(gradient) + , mVelocity(&velocity) + , mBackgroundVelocity(backgroundVelocity) { } + + ComputeNeumannVelocityOp( const GradientT& gradient, + const ValueT& backgroundVelocity) + : mGradient(gradient) + , mBackgroundVelocity(backgroundVelocity) { } + + void operator()(typename Vec3GridT::TreeType::LeafNodeType& leaf, size_t) const { + auto gradientAccessor = mGradient.getConstAccessor(); + + std::unique_ptr velocityAccessor; + std::unique_ptr velocitySampler; + if (mVelocity) { + velocityAccessor.reset(new VelocityAccessor(mVelocity->getConstAccessor())); + velocitySampler.reset(new VelocitySamplerT(*velocityAccessor, mVelocity->transform())); + } + + for (auto it = leaf.beginValueOn(); it; ++it) { + Coord ijk = it.getCoord(); + auto gradient = gradientAccessor.getValue(ijk); + if (gradient.normalize()) { + const Vec3d xyz = mGradient.transform().indexToWorld(ijk); + const ValueT sampledVelocity = velocitySampler ? + velocitySampler->wsSample(xyz) : zeroVal(); + auto velocity = sampledVelocity + mBackgroundVelocity; + auto value = gradient.dot(velocity) * gradient; + it.setValue(value); + } + else { + it.setValueOff(); + } + } + } + +private: + const GradientT& mGradient; + const Vec3GridT* mVelocity = nullptr; + const ValueT& mBackgroundVelocity; +}; // struct ComputeNeumannVelocityOp + + +// initalizes the boundary conditions for use in the Poisson Solver +template +struct SolveBoundaryOp +{ + SolveBoundaryOp(const Vec3GridT& velGrid, const MaskT& domainGrid) + : mVoxelSize(domainGrid.voxelSize()[0]) + , mVelGrid(velGrid) + , mDomainGrid(domainGrid) + { } + + void operator()(const Coord& ijk, const Coord& neighbor, + double& source, double& diagonal) const { + + typename Vec3GridT::ConstAccessor velGridAccessor = mVelGrid.getAccessor(); + const Coord diff = (ijk - neighbor); + + if (velGridAccessor.isValueOn(ijk)) { // Neumann + const typename Vec3GridT::ValueType& sampleVel = velGridAccessor.getValue(ijk); + source += mVoxelSize*diff[0]*sampleVel[0]; + source += mVoxelSize*diff[1]*sampleVel[1]; + source += mVoxelSize*diff[2]*sampleVel[2]; + } else { + diagonal -= 1; // Zero Dirichlet + } + + } + + const double mVoxelSize; + const Vec3GridT& mVelGrid; + const MaskT& mDomainGrid; +}; // struct SolveBoundaryOp + + +} // namespace potential_flow_internal + + +//////////////////////////////////////////////////////////////////////////// + +template +inline typename MaskT::Ptr +createPotentialFlowMask(const GridT& grid, int dilation) +{ + using MaskTreeT = typename MaskT::TreeType; + + if (!grid.hasUniformVoxels()) { + OPENVDB_THROW(ValueError, "Transform must have uniform voxels for Potential Flow mask."); + } + + // construct a new mask grid representing the interior region + auto interior = interiorMask(grid); + + // create a new mask grid from the interior topology + typename MaskTreeT::Ptr maskTree(new MaskTreeT(interior->tree(), false, TopologyCopy())); + typename MaskT::Ptr mask = MaskT::create(maskTree); + mask->setTransform(grid.transform().copy()); + + dilateActiveValues(*maskTree, dilation, NN_FACE_EDGE); + + // subtract the interior region from the mask to leave just the exterior narrow band + mask->tree().topologyDifference(interior->tree()); + + return mask; +} + + +template +typename GridT::template ValueConverter::Type::Ptr createPotentialFlowNeumannVelocities( + const GridT& collider, + const MaskT& domain, + const typename GridT::template ValueConverter::Type::ConstPtr boundaryVelocity, + const Vec3T& backgroundVelocity) +{ + using Vec3GridT = typename GridT::template ValueConverter::Type; + using TreeT = typename Vec3GridT::TreeType; + using ValueT = typename TreeT::ValueType; + using GradientT = typename ScalarToVectorConverter::Type; + + using potential_flow_internal::ComputeNeumannVelocityOp; + + // this method requires the collider to be a level set to generate the gradient + // use the tools::topologyToLevelset() method if you need to convert a mask into a level set + if (collider.getGridClass() != GRID_LEVEL_SET || + !std::is_floating_point::value) { + OPENVDB_THROW(TypeError, "Potential Flow expecting the collider to be a level set."); + } + + // empty grid if there are no velocities + if (backgroundVelocity == zeroVal() && + (!boundaryVelocity || boundaryVelocity->empty())) { + auto neumann = Vec3GridT::create(); + neumann->setTransform(collider.transform().copy()); + return neumann; + } + + // extract the intersection between the collider and the domain + using MaskTreeT = typename GridT::TreeType::template ValueConverter::Type; + typename MaskTreeT::Ptr boundary(new MaskTreeT(domain.tree(), false, TopologyCopy())); + boundary->topologyIntersection(collider.tree()); + + typename TreeT::Ptr neumannTree(new TreeT(*boundary, zeroVal(), TopologyCopy())); + neumannTree->voxelizeActiveTiles(); + + // compute the gradient from the collider + const typename GradientT::Ptr gradient = tools::gradient(collider); + + typename tree::LeafManager leafManager(*neumannTree); + + if (boundaryVelocity && !boundaryVelocity->empty()) { + ComputeNeumannVelocityOp + neumannOp(*gradient, *boundaryVelocity, backgroundVelocity); + leafManager.foreach(neumannOp, false); + } + else { + ComputeNeumannVelocityOp + neumannOp(*gradient, backgroundVelocity); + leafManager.foreach(neumannOp, false); + } + + // prune any inactive values + tools::pruneInactive(*neumannTree); + + typename Vec3GridT::Ptr neumann(Vec3GridT::create(neumannTree)); + neumann->setTransform(collider.transform().copy()); + + return neumann; +} + + +template +inline typename VectorToScalarGrid::Ptr +computeScalarPotential(const MaskT& domain, const Vec3GridT& neumann, + math::pcg::State& state, InterrupterT* interrupter) +{ + using ScalarT = typename Vec3GridT::ValueType::value_type; + using ScalarTreeT = typename Vec3GridT::TreeType::template ValueConverter::Type; + using ScalarGridT = typename Vec3GridT::template ValueConverter::Type; + + using potential_flow_internal::SolveBoundaryOp; + + // create the solution tree and activate using domain topology + ScalarTreeT solveTree(domain.tree(), zeroVal(), TopologyCopy()); + solveTree.voxelizeActiveTiles(); + + util::NullInterrupter nullInterrupt; + if (!interrupter) interrupter = &nullInterrupt; + + // solve for scalar potential + SolveBoundaryOp solve(neumann, domain); + typename ScalarTreeT::Ptr potentialTree = + poisson::solveWithBoundaryConditions(solveTree, solve, state, *interrupter, true); + + auto potential = ScalarGridT::create(potentialTree); + potential->setTransform(domain.transform().copy()); + + return potential; +} + + +template +inline typename Vec3GridT::Ptr +computePotentialFlow(const typename VectorToScalarGrid::Type& potential, + const Vec3GridT& neumann, + const typename Vec3GridT::ValueType backgroundVelocity) +{ + using Vec3T = const typename Vec3GridT::ValueType; + using potential_flow_internal::extractOuterVoxelMask; + + // The VDB gradient op uses the background grid value, which is zero by default, when + // computing the gradient at the boundary. This works at the zero-dirichlet boundaries, but + // give spurious values at Neumann ones as the potential should be non-zero there. To avoid + // the extra error, we just substitute the Neumann condition on the boundaries. + // Technically, we should allow for some tangential velocity, coming from the gradient of + // potential. However, considering the voxelized nature of our solve, a decent approximation + // to a tangential derivative isn't probably worth our time. Any tangential component will be + // found in the next interior ring of voxels. + + auto gradient = tools::gradient(potential); + + // apply Neumann values to the gradient + + auto applyNeumann = [&gradient, &neumann] ( + const MaskGrid::TreeType::LeafNodeType& leaf, size_t) + { + typename Vec3GridT::Accessor gradientAccessor = gradient->getAccessor(); + typename Vec3GridT::ConstAccessor neumannAccessor = neumann.getAccessor(); + for (auto it = leaf.beginValueOn(); it; ++it) { + const Coord ijk = it.getCoord(); + typename Vec3GridT::ValueType value; + if (neumannAccessor.probeValue(ijk, value)) { + gradientAccessor.setValue(ijk, value); + } + } + }; + + const MaskGrid::TreeType::Ptr boundary = extractOuterVoxelMask(*gradient); + typename tree::LeafManager leafManager(*boundary); + leafManager.foreach(applyNeumann); + + // apply the background value to the gradient if supplied + + if (backgroundVelocity != zeroVal()) { + auto applyBackgroundVelocity = [&backgroundVelocity] ( + typename Vec3GridT::TreeType::LeafNodeType& leaf, size_t) + { + for (auto it = leaf.beginValueOn(); it; ++it) { + it.setValue(it.getValue() - backgroundVelocity); + } + }; + + typename tree::LeafManager leafManager2(gradient->tree()); + leafManager2.foreach(applyBackgroundVelocity); + } + + return gradient; +} + + +//////////////////////////////////////// + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_POTENTIAL_FLOW_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Prune.h b/openvdb/tools/Prune.h new file mode 100644 index 00000000..d221928c --- /dev/null +++ b/openvdb/tools/Prune.h @@ -0,0 +1,400 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Prune.h +/// +/// @brief Defined various multi-threaded utility functions for trees +/// +/// @author Ken Museth + +#ifndef OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED + +#include // for isNegative and negative +#include +#include +#include // for std::nth_element() +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Reduce the memory footprint of a @a tree by replacing with tiles +/// any nodes whose values are all the same (optionally to within a tolerance) +/// and have the same active state. +/// +/// @note For trees with non-boolean values a child node with (approximately) +/// constant values are replaced with a tile value corresponding to the median +/// of the values in said child node. +/// +/// @param tree the tree to be pruned +/// @param tolerance tolerance within which values are considered to be equal +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +template +inline void +prune(TreeT& tree, + typename TreeT::ValueType tolerance = zeroVal(), + bool threaded = true, + size_t grainSize = 1); + + +/// @brief Reduce the memory footprint of a @a tree by replacing with tiles +/// any non-leaf nodes whose values are all the same (optionally to within a tolerance) +/// and have the same active state. +/// +/// @param tree the tree to be pruned +/// @param tolerance tolerance within which values are considered to be equal +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +template +inline void +pruneTiles(TreeT& tree, + typename TreeT::ValueType tolerance = zeroVal(), + bool threaded = true, + size_t grainSize = 1); + + +/// @brief Reduce the memory footprint of a @a tree by replacing with +/// background tiles any nodes whose values are all inactive. +/// +/// @param tree the tree to be pruned +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +template +inline void +pruneInactive(TreeT& tree, bool threaded = true, size_t grainSize = 1); + + +/// @brief Reduce the memory footprint of a @a tree by replacing any nodes +/// whose values are all inactive with tiles of the given @a value. +/// +/// @param tree the tree to be pruned +/// @param value value assigned to inactive tiles created during pruning +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +template +inline void +pruneInactiveWithValue( + TreeT& tree, + const typename TreeT::ValueType& value, + bool threaded = true, + size_t grainSize = 1); + + +/// @brief Reduce the memory footprint of a @a tree by replacing nodes +/// whose values are all inactive with inactive tiles having a value equal to +/// the first value encountered in the (inactive) child. +/// @details This method is faster than tolerance-based prune and +/// useful for narrow-band level set applications where inactive +/// values are limited to either an inside or an outside value. +/// +/// @param tree the tree to be pruned +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +/// +/// @throw ValueError if the background of the @a tree is negative (as defined by math::isNegative) +template +inline void +pruneLevelSet(TreeT& tree, + bool threaded = true, + size_t grainSize = 1); + + +/// @brief Reduce the memory footprint of a @a tree by replacing nodes whose voxel values +/// are all inactive with inactive tiles having the value -| @a insideWidth | +/// if the voxel values are negative and | @a outsideWidth | otherwise. +/// +/// @details This method is faster than tolerance-based prune and +/// useful for narrow-band level set applications where inactive +/// values are limited to either an inside or an outside value. +/// +/// @param tree the tree to be pruned +/// @param outsideWidth the width of the outside of the narrow band +/// @param insideWidth the width of the inside of the narrow band +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +/// +/// @throw ValueError if @a outsideWidth is negative or @a insideWidth is +/// not negative (as defined by math::isNegative). +template +inline void +pruneLevelSet(TreeT& tree, + const typename TreeT::ValueType& outsideWidth, + const typename TreeT::ValueType& insideWidth, + bool threaded = true, + size_t grainSize = 1); + + +//////////////////////////////////////////////// + + +template +class InactivePruneOp +{ +public: + using ValueT = typename TreeT::ValueType; + using RootT = typename TreeT::RootNodeType; + using LeafT = typename TreeT::LeafNodeType; + static_assert(RootT::LEVEL > TerminationLevel, "TerminationLevel out of range"); + + InactivePruneOp(TreeT& tree) : mValue(tree.background()) + { + tree.clearAllAccessors();//clear cache of nodes that could be pruned + } + + InactivePruneOp(TreeT& tree, const ValueT& v) : mValue(v) + { + tree.clearAllAccessors();//clear cache of nodes that could be pruned + } + + // Nothing to do at the leaf node level + void operator()(LeafT&) const {} + + // Prune the child nodes of the internal nodes + template + void operator()(NodeT& node) const + { + if (NodeT::LEVEL > TerminationLevel) { + for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) { + if (it->isInactive()) node.addTile(it.pos(), mValue, false); + } + } + } + + // Prune the child nodes of the root node + void operator()(RootT& root) const + { + for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) { + if (it->isInactive()) root.addTile(it.getCoord(), mValue, false); + } + root.eraseBackgroundTiles(); + } + +private: + const ValueT mValue; +};// InactivePruneOp + + +template +class TolerancePruneOp +{ +public: + using ValueT = typename TreeT::ValueType; + using RootT = typename TreeT::RootNodeType; + using LeafT = typename TreeT::LeafNodeType; + static_assert(RootT::LEVEL > TerminationLevel, "TerminationLevel out of range"); + + TolerancePruneOp(TreeT& tree, const ValueT& tol) : mTolerance(tol) + { + tree.clearAllAccessors();//clear cache of nodes that could be pruned + } + + // Prune the child nodes of the root node + inline void operator()(RootT& root) const + { + ValueT value; + bool state; + for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) { + if (this->isConstant(*it, value, state)) root.addTile(it.getCoord(), value, state); + } + root.eraseBackgroundTiles(); + } + + // Prune the child nodes of the internal nodes + template + inline void operator()(NodeT& node) const + { + if (NodeT::LEVEL > TerminationLevel) { + ValueT value; + bool state; + for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) { + if (this->isConstant(*it, value, state)) node.addTile(it.pos(), value, state); + } + } + } + + // Nothing to do at the leaf node level + inline void operator()(LeafT&) const {} + +private: + // Private method specialized for leaf nodes + inline ValueT median(LeafT& leaf) const {return leaf.medianAll(leaf.buffer().data());} + + // Private method for internal nodes + template + inline typename NodeT::ValueType median(NodeT& node) const + { + using UnionT = typename NodeT::UnionType; + UnionT* data = const_cast(node.getTable());//never do this at home kids :) + static const size_t midpoint = (NodeT::NUM_VALUES - 1) >> 1; + auto op = [](const UnionT& a, const UnionT& b){return a.getValue() < b.getValue();}; + std::nth_element(data, data + midpoint, data + NodeT::NUM_VALUES, op); + return data[midpoint].getValue(); + } + + // Specialization to nodes templated on booleans values + template + inline + typename std::enable_if::value, bool>::type + isConstant(NodeT& node, bool& value, bool& state) const + { + return node.isConstant(value, state, mTolerance); + } + + // Nodes templated on non-boolean values + template + inline + typename std::enable_if::value, bool>::type + isConstant(NodeT& node, ValueT& value, bool& state) const + { + ValueT tmp; + const bool test = node.isConstant(value, tmp, state, mTolerance); + if (test) value = this->median(node); + return test; + } + + const ValueT mTolerance; +};// TolerancePruneOp + + +template +class LevelSetPruneOp +{ +public: + using ValueT = typename TreeT::ValueType; + using RootT = typename TreeT::RootNodeType; + using LeafT = typename TreeT::LeafNodeType; + static_assert(RootT::LEVEL > TerminationLevel, "TerminationLevel out of range"); + + LevelSetPruneOp(TreeT& tree) + : mOutside(tree.background()) + , mInside(math::negative(mOutside)) + { + if (math::isNegative(mOutside)) { + OPENVDB_THROW(ValueError, + "LevelSetPruneOp: the background value cannot be negative!"); + } + tree.clearAllAccessors();//clear cache of nodes that could be pruned + } + + LevelSetPruneOp(TreeT& tree, const ValueT& outside, const ValueT& inside) + : mOutside(outside) + , mInside(inside) + { + if (math::isNegative(mOutside)) { + OPENVDB_THROW(ValueError, + "LevelSetPruneOp: the outside value cannot be negative!"); + } + if (!math::isNegative(mInside)) { + OPENVDB_THROW(ValueError, + "LevelSetPruneOp: the inside value must be negative!"); + } + tree.clearAllAccessors();//clear cache of nodes that could be pruned + } + + // Nothing to do at the leaf node level + void operator()(LeafT&) const {} + + // Prune the child nodes of the internal nodes + template + void operator()(NodeT& node) const + { + if (NodeT::LEVEL > TerminationLevel) { + for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) { + if (it->isInactive()) node.addTile(it.pos(), this->getTileValue(it), false); + } + } + } + + // Prune the child nodes of the root node + void operator()(RootT& root) const + { + for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) { + if (it->isInactive()) root.addTile(it.getCoord(), this->getTileValue(it), false); + } + root.eraseBackgroundTiles(); + } + +private: + template + inline ValueT getTileValue(const IterT& iter) const + { + return math::isNegative(iter->getFirstValue()) ? mInside : mOutside; + } + + const ValueT mOutside, mInside; +};// LevelSetPruneOp + + +template +inline void +prune(TreeT& tree, typename TreeT::ValueType tol, bool threaded, size_t grainSize) +{ + tree::NodeManager nodes(tree); + TolerancePruneOp op(tree, tol); + nodes.foreachBottomUp(op, threaded, grainSize); +} + + +template +inline void +pruneTiles(TreeT& tree, typename TreeT::ValueType tol, bool threaded, size_t grainSize) +{ + tree::NodeManager nodes(tree); + TolerancePruneOp op(tree, tol); + nodes.foreachBottomUp(op, threaded, grainSize); +} + + +template +inline void +pruneInactive(TreeT& tree, bool threaded, size_t grainSize) +{ + tree::NodeManager nodes(tree); + InactivePruneOp op(tree); + nodes.foreachBottomUp(op, threaded, grainSize); +} + + +template +inline void +pruneInactiveWithValue(TreeT& tree, const typename TreeT::ValueType& v, + bool threaded, size_t grainSize) +{ + tree::NodeManager nodes(tree); + InactivePruneOp op(tree, v); + nodes.foreachBottomUp(op, threaded, grainSize); +} + + +template +inline void +pruneLevelSet(TreeT& tree, + const typename TreeT::ValueType& outside, + const typename TreeT::ValueType& inside, + bool threaded, + size_t grainSize) +{ + tree::NodeManager nodes(tree); + LevelSetPruneOp op(tree, outside, inside); + nodes.foreachBottomUp(op, threaded, grainSize); +} + + +template +inline void +pruneLevelSet(TreeT& tree, bool threaded, size_t grainSize) +{ + tree::NodeManager nodes(tree); + LevelSetPruneOp op(tree); + nodes.foreachBottomUp(op, threaded, grainSize); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/RayIntersector.h b/openvdb/tools/RayIntersector.h new file mode 100644 index 00000000..282d99aa --- /dev/null +++ b/openvdb/tools/RayIntersector.h @@ -0,0 +1,671 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file RayIntersector.h +/// +/// @author Ken Museth +/// +/// @brief Accelerated intersection of a ray with a narrow-band level +/// set or a generic (e.g. density) volume. This will of course be +/// useful for respectively surface and volume rendering. +/// +/// @details This file defines two main classes, +/// LevelSetRayIntersector and VolumeRayIntersector, as well as the +/// three support classes LevelSetHDDA, VolumeHDDA and LinearSearchImpl. +/// The LevelSetRayIntersector is templated on the LinearSearchImpl class +/// and calls instances of the LevelSetHDDA class. The reason to split +/// level set ray intersection into three classes is twofold. First +/// LevelSetRayIntersector defines the public API for client code and +/// LinearSearchImpl defines the actual algorithm used for the +/// ray level-set intersection. In other words this design will allow +/// for the public API to be fixed while the intersection algorithm +/// can change without resolving to (slow) virtual methods. Second, +/// LevelSetHDDA, which implements a hierarchical Differential Digital +/// Analyzer, relies on partial template specialization, so it has to +/// be a standalone class (as opposed to a member class of +/// LevelSetRayIntersector). The VolumeRayIntersector is conceptually +/// much simpler than the LevelSetRayIntersector, and hence it only +/// depends on VolumeHDDA that implements the hierarchical +/// Differential Digital Analyzer. + + +#ifndef OPENVDB_TOOLS_RAYINTERSECTOR_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_RAYINTERSECTOR_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include "Morphology.h" +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +// Helper class that implements the actual search of the zero-crossing +// of the level set along the direction of a ray. This particular +// implementation uses iterative linear search. +template +class LinearSearchImpl; + + +///////////////////////////////////// LevelSetRayIntersector ///////////////////////////////////// + + +/// @brief This class provides the public API for intersecting a ray +/// with a narrow-band level set. +/// +/// @details It wraps a SearchImplT with a simple public API and +/// performs the actual hierarchical tree node and voxel traversal. +/// +/// @warning Use the (default) copy-constructor to make sure each +/// computational thread has their own instance of this class. This is +/// important since the SearchImplT contains a ValueAccessor that is +/// not thread-safe. However copying is very efficient. +/// +/// @see tools/RayTracer.h for examples of intended usage. +/// +/// @todo Add TrilinearSearchImpl, as an alternative to LinearSearchImpl, +/// that performs analytical 3D trilinear intersection tests, i.e., solves +/// cubic equations. This is slower but also more accurate than the 1D +/// linear interpolation in LinearSearchImpl. +template, + int NodeLevel = GridT::TreeType::RootNodeType::ChildNodeType::LEVEL, + typename RayT = math::Ray > +class LevelSetRayIntersector +{ +public: + using GridType = GridT; + using RayType = RayT; + using RealType = typename RayT::RealType; + using Vec3Type = typename RayT::Vec3T; + using ValueT = typename GridT::ValueType; + using TreeT = typename GridT::TreeType; + + static_assert(NodeLevel >= -1 && NodeLevel < int(TreeT::DEPTH)-1, "NodeLevel out of range"); + static_assert(std::is_floating_point::value, + "level set grids must have scalar, floating-point value types"); + + /// @brief Constructor + /// @param grid level set grid to intersect rays against. + /// @param isoValue optional iso-value for the ray-intersection. + LevelSetRayIntersector(const GridT& grid, const ValueT& isoValue = zeroVal()) + : mTester(grid, isoValue) + { + if (!grid.hasUniformVoxels() ) { + OPENVDB_THROW(RuntimeError, + "LevelSetRayIntersector only supports uniform voxels!"); + } + if (grid.getGridClass() != GRID_LEVEL_SET) { + OPENVDB_THROW(RuntimeError, + "LevelSetRayIntersector only supports level sets!" + "\nUse Grid::setGridClass(openvdb::GRID_LEVEL_SET)"); + } + } + + /// @brief Return the iso-value used for ray-intersections + const ValueT& getIsoValue() const { return mTester.getIsoValue(); } + + /// @brief Return @c true if the index-space ray intersects the level set. + /// @param iRay ray represented in index space. + bool intersectsIS(const RayType& iRay) const + { + if (!mTester.setIndexRay(iRay)) return false;//missed bbox + return math::LevelSetHDDA::test(mTester); + } + + /// @brief Return @c true if the index-space ray intersects the level set + /// @param iRay ray represented in index space. + /// @param iTime if an intersection was found it is assigned the time of the + /// intersection along the index ray. + bool intersectsIS(const RayType& iRay, RealType &iTime) const + { + if (!mTester.setIndexRay(iRay)) return false;//missed bbox + iTime = mTester.getIndexTime(); + return math::LevelSetHDDA::test(mTester); + } + + /// @brief Return @c true if the index-space ray intersects the level set. + /// @param iRay ray represented in index space. + /// @param xyz if an intersection was found it is assigned the + /// intersection point in index space, otherwise it is unchanged. + bool intersectsIS(const RayType& iRay, Vec3Type& xyz) const + { + if (!mTester.setIndexRay(iRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getIndexPos(xyz); + return true; + } + + /// @brief Return @c true if the index-space ray intersects the level set. + /// @param iRay ray represented in index space. + /// @param xyz if an intersection was found it is assigned the + /// intersection point in index space, otherwise it is unchanged. + /// @param iTime if an intersection was found it is assigned the time of the + /// intersection along the index ray. + bool intersectsIS(const RayType& iRay, Vec3Type& xyz, RealType &iTime) const + { + if (!mTester.setIndexRay(iRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getIndexPos(xyz); + iTime = mTester.getIndexTime(); + return true; + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + bool intersectsWS(const RayType& wRay) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + return math::LevelSetHDDA::test(mTester); + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + /// @param wTime if an intersection was found it is assigned the time of the + /// intersection along the world ray. + bool intersectsWS(const RayType& wRay, RealType &wTime) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + wTime = mTester.getWorldTime(); + return math::LevelSetHDDA::test(mTester); + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + /// @param world if an intersection was found it is assigned the + /// intersection point in world space, otherwise it is unchanged + bool intersectsWS(const RayType& wRay, Vec3Type& world) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getWorldPos(world); + return true; + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + /// @param world if an intersection was found it is assigned the + /// intersection point in world space, otherwise it is unchanged. + /// @param wTime if an intersection was found it is assigned the time of the + /// intersection along the world ray. + bool intersectsWS(const RayType& wRay, Vec3Type& world, RealType &wTime) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getWorldPos(world); + wTime = mTester.getWorldTime(); + return true; + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + /// @param world if an intersection was found it is assigned the + /// intersection point in world space, otherwise it is unchanged. + /// @param normal if an intersection was found it is assigned the normal + /// of the level set surface in world space, otherwise it is unchanged. + bool intersectsWS(const RayType& wRay, Vec3Type& world, Vec3Type& normal) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getWorldPosAndNml(world, normal); + return true; + } + + /// @brief Return @c true if the world-space ray intersects the level set. + /// @param wRay ray represented in world space. + /// @param world if an intersection was found it is assigned the + /// intersection point in world space, otherwise it is unchanged. + /// @param normal if an intersection was found it is assigned the normal + /// of the level set surface in world space, otherwise it is unchanged. + /// @param wTime if an intersection was found it is assigned the time of the + /// intersection along the world ray. + bool intersectsWS(const RayType& wRay, Vec3Type& world, Vec3Type& normal, RealType &wTime) const + { + if (!mTester.setWorldRay(wRay)) return false;//missed bbox + if (!math::LevelSetHDDA::test(mTester)) return false;//missed level set + mTester.getWorldPosAndNml(world, normal); + wTime = mTester.getWorldTime(); + return true; + } + +private: + + mutable SearchImplT mTester; + +};// LevelSetRayIntersector + + +////////////////////////////////////// VolumeRayIntersector ////////////////////////////////////// + + +/// @brief This class provides the public API for intersecting a ray +/// with a generic (e.g. density) volume. +/// @details Internally it performs the actual hierarchical tree node traversal. +/// @warning Use the (default) copy-constructor to make sure each +/// computational thread has their own instance of this class. This is +/// important since it contains a ValueAccessor that is +/// not thread-safe and a CoordBBox of the active voxels that should +/// not be re-computed for each thread. However copying is very efficient. +/// @par Example: +/// @code +/// // Create an instance for the master thread +/// VolumeRayIntersector inter(grid); +/// // For each additional thread use the copy constructor. This +/// // amortizes the overhead of computing the bbox of the active voxels! +/// VolumeRayIntersector inter2(inter); +/// // Before each ray-traversal set the index ray. +/// iter.setIndexRay(ray); +/// // or world ray +/// iter.setWorldRay(ray); +/// // Now you can begin the ray-marching using consecutive calls to VolumeRayIntersector::march +/// double t0=0, t1=0;// note the entry and exit times are with respect to the INDEX ray +/// while ( inter.march(t0, t1) ) { +/// // perform line-integration between t0 and t1 +/// }} +/// @endcode +template > +class VolumeRayIntersector +{ +public: + using GridType = GridT; + using RayType = RayT; + using RealType = typename RayT::RealType; + using RootType = typename GridT::TreeType::RootNodeType; + using TreeT = tree::Tree::Type>; + + static_assert(NodeLevel >= 0 && NodeLevel < int(TreeT::DEPTH)-1, "NodeLevel out of range"); + + /// @brief Grid constructor + /// @param grid Generic grid to intersect rays against. + /// @param dilationCount The number of voxel dilations performed + /// on (a boolean copy of) the input grid. This allows the + /// intersector to account for the size of interpolation kernels + /// in client code. + /// @throw RuntimeError if the voxels of the grid are not uniform + /// or the grid is empty. + VolumeRayIntersector(const GridT& grid, int dilationCount = 0) + : mIsMaster(true) + , mTree(new TreeT(grid.tree(), false, TopologyCopy())) + , mGrid(&grid) + , mAccessor(*mTree) + { + if (!grid.hasUniformVoxels() ) { + OPENVDB_THROW(RuntimeError, + "VolumeRayIntersector only supports uniform voxels!"); + } + if ( grid.empty() ) { + OPENVDB_THROW(RuntimeError, "LinearSearchImpl does not supports empty grids"); + } + + // Dilate active voxels to better account for the size of interpolation kernels + tools::dilateVoxels(*mTree, dilationCount); + + mTree->root().evalActiveBoundingBox(mBBox, /*visit individual voxels*/false); + + mBBox.max().offset(1);//padding so the bbox of a node becomes (origin,origin + node_dim) + } + + /// @brief Grid and BBox constructor + /// @param grid Generic grid to intersect rays against. + /// @param bbox The axis-aligned bounding-box in the index space of the grid. + /// @warning It is assumed that bbox = (min, min + dim) where min denotes + /// to the smallest grid coordinates and dim are the integer length of the bbox. + /// @throw RuntimeError if the voxels of the grid are not uniform + /// or the grid is empty. + VolumeRayIntersector(const GridT& grid, const math::CoordBBox& bbox) + : mIsMaster(true) + , mTree(new TreeT(grid.tree(), false, TopologyCopy())) + , mGrid(&grid) + , mAccessor(*mTree) + , mBBox(bbox) + { + if (!grid.hasUniformVoxels() ) { + OPENVDB_THROW(RuntimeError, + "VolumeRayIntersector only supports uniform voxels!"); + } + if ( grid.empty() ) { + OPENVDB_THROW(RuntimeError, "LinearSearchImpl does not supports empty grids"); + } + } + + /// @brief Shallow copy constructor + /// @warning This copy constructor creates shallow copies of data + /// members of the instance passed as the argument. For + /// performance reasons we are not using shared pointers (their + /// mutex-lock impairs multi-threading). + VolumeRayIntersector(const VolumeRayIntersector& other) + : mIsMaster(false) + , mTree(other.mTree)//shallow copy + , mGrid(other.mGrid)//shallow copy + , mAccessor(*mTree)//initialize new (vs deep copy) + , mRay(other.mRay)//deep copy + , mTmax(other.mTmax)//deep copy + , mBBox(other.mBBox)//deep copy + { + } + + /// @brief Destructor + ~VolumeRayIntersector() { if (mIsMaster) delete mTree; } + + /// @brief Return @c false if the index ray misses the bbox of the grid. + /// @param iRay Ray represented in index space. + /// @warning Call this method (or setWorldRay) before the ray + /// traversal starts and use the return value to decide if further + /// marching is required. + inline bool setIndexRay(const RayT& iRay) + { + mRay = iRay; + const bool hit = mRay.clip(mBBox); + if (hit) mTmax = mRay.t1(); + return hit; + } + + /// @brief Return @c false if the world ray misses the bbox of the grid. + /// @param wRay Ray represented in world space. + /// @warning Call this method (or setIndexRay) before the ray + /// traversal starts and use the return value to decide if further + /// marching is required. + /// @details Since hit times are computed with respect to the ray + /// represented in index space of the current grid, it is + /// recommended that either the client code uses getIndexPos to + /// compute index position from hit times or alternatively keeps + /// an instance of the index ray and instead uses setIndexRay to + /// initialize the ray. + inline bool setWorldRay(const RayT& wRay) + { + return this->setIndexRay(wRay.worldToIndex(*mGrid)); + } + + inline typename RayT::TimeSpan march() + { + const typename RayT::TimeSpan t = mHDDA.march(mRay, mAccessor); + if (t.t1>0) mRay.setTimes(t.t1 + math::Delta::value(), mTmax); + return t; + } + + /// @brief Return @c true if the ray intersects active values, + /// i.e. either active voxels or tiles. Only when a hit is + /// detected are t0 and t1 updated with the corresponding entry + /// and exit times along the INDEX ray! + /// @note Note that t0 and t1 are only resolved at the node level + /// (e.g. a LeafNode with active voxels) as opposed to the individual + /// active voxels. + /// @param t0 If the return value > 0 this is the time of the + /// first hit of an active tile or leaf. + /// @param t1 If the return value > t0 this is the time of the + /// first hit (> t0) of an inactive tile or exit point of the + /// BBOX for the leaf nodes. + /// @warning t0 and t1 are computed with respect to the ray represented in + /// index space of the current grid, not world space! + inline bool march(RealType& t0, RealType& t1) + { + const typename RayT::TimeSpan t = this->march(); + t.get(t0, t1); + return t.valid(); + } + + /// @brief Generates a list of hits along the ray. + /// + /// @param list List of hits represented as time spans. + /// + /// @note ListType is a list of RayType::TimeSpan and is required to + /// have the two methods: clear() and push_back(). Thus, it could + /// be std::vector or + /// std::deque. + template + inline void hits(ListType& list) + { + mHDDA.hits(mRay, mAccessor, list); + } + + /// @brief Return the floating-point index position along the + /// current index ray at the specified time. + inline Vec3R getIndexPos(RealType time) const { return mRay(time); } + + /// @brief Return the floating-point world position along the + /// current index ray at the specified time. + inline Vec3R getWorldPos(RealType time) const { return mGrid->indexToWorld(mRay(time)); } + + inline RealType getWorldTime(RealType time) const + { + return time*mGrid->transform().baseMap()->applyJacobian(mRay.dir()).length(); + } + + /// @brief Return a const reference to the input grid. + const GridT& grid() const { return *mGrid; } + + /// @brief Return a const reference to the (potentially dilated) + /// bool tree used to accelerate the ray marching. + const TreeT& tree() const { return *mTree; } + + /// @brief Return a const reference to the BBOX of the grid + const math::CoordBBox& bbox() const { return mBBox; } + + /// @brief Print bbox, statistics, memory usage and other information. + /// @param os a stream to which to write textual information + /// @param verboseLevel 1: print bbox only; 2: include boolean tree + /// statistics; 3: include memory usage + void print(std::ostream& os = std::cout, int verboseLevel = 1) + { + if (verboseLevel>0) { + os << "BBox: " << mBBox << std::endl; + if (verboseLevel==2) { + mTree->print(os, 1); + } else if (verboseLevel>2) { + mTree->print(os, 2); + } + } + } + +private: + using AccessorT = typename tree::ValueAccessor; + + const bool mIsMaster; + TreeT* mTree; + const GridT* mGrid; + AccessorT mAccessor; + RayT mRay; + RealType mTmax; + math::CoordBBox mBBox; + math::VolumeHDDA mHDDA; + +};// VolumeRayIntersector + + +//////////////////////////////////////// LinearSearchImpl //////////////////////////////////////// + + +/// @brief Implements linear iterative search for an iso-value of +/// the level set along the direction of the ray. +/// +/// @note Since this class is used internally in +/// LevelSetRayIntersector (define above) and LevelSetHDDA (defined below) +/// client code should never interact directly with its API. This also +/// explains why we are not concerned with the fact that several of +/// its methods are unsafe to call unless roots were already detected. +/// +/// @details It is approximate due to the limited number of iterations +/// which can can be defined with a template parameter. However the default value +/// has proven surprisingly accurate and fast. In fact more iterations +/// are not guaranteed to give significantly better results. +/// +/// @warning Since the root-searching algorithm is approximate +/// (first-order) it is possible to miss intersections if the +/// iso-value is too close to the inside or outside of the narrow +/// band (typically a distance less than a voxel unit). +/// +/// @warning Since this class internally stores a ValueAccessor it is NOT thread-safe, +/// so make sure to give each thread its own instance. This of course also means that +/// the cost of allocating an instance should (if possible) be amortized over +/// as many ray intersections as possible. +template +class LinearSearchImpl +{ +public: + using RayT = math::Ray; + using VecT = math::Vec3; + using ValueT = typename GridT::ValueType; + using AccessorT = typename GridT::ConstAccessor; + using StencilT = math::BoxStencil; + + /// @brief Constructor from a grid. + /// @throw RunTimeError if the grid is empty. + /// @throw ValueError if the isoValue is not inside the narrow-band. + LinearSearchImpl(const GridT& grid, const ValueT& isoValue = zeroVal()) + : mStencil(grid), + mIsoValue(isoValue), + mMinValue(isoValue - ValueT(2 * grid.voxelSize()[0])), + mMaxValue(isoValue + ValueT(2 * grid.voxelSize()[0])) + { + if ( grid.empty() ) { + OPENVDB_THROW(RuntimeError, "LinearSearchImpl does not supports empty grids"); + } + if (mIsoValue<= -grid.background() || + mIsoValue>= grid.background() ){ + OPENVDB_THROW(ValueError, "The iso-value must be inside the narrow-band!"); + } + grid.tree().root().evalActiveBoundingBox(mBBox, /*visit individual voxels*/false); + } + + /// @brief Return the iso-value used for ray-intersections + const ValueT& getIsoValue() const { return mIsoValue; } + + /// @brief Return @c false if the ray misses the bbox of the grid. + /// @param iRay Ray represented in index space. + /// @warning Call this method before the ray traversal starts. + inline bool setIndexRay(const RayT& iRay) + { + mRay = iRay; + return mRay.clip(mBBox);//did it hit the bbox + } + + /// @brief Return @c false if the ray misses the bbox of the grid. + /// @param wRay Ray represented in world space. + /// @warning Call this method before the ray traversal starts. + inline bool setWorldRay(const RayT& wRay) + { + mRay = wRay.worldToIndex(mStencil.grid()); + return mRay.clip(mBBox);//did it hit the bbox + } + + /// @brief Get the intersection point in index space. + /// @param xyz The position in index space of the intersection. + inline void getIndexPos(VecT& xyz) const { xyz = mRay(mTime); } + + /// @brief Get the intersection point in world space. + /// @param xyz The position in world space of the intersection. + inline void getWorldPos(VecT& xyz) const { xyz = mStencil.grid().indexToWorld(mRay(mTime)); } + + /// @brief Get the intersection point and normal in world space + /// @param xyz The position in world space of the intersection. + /// @param nml The surface normal in world space of the intersection. + inline void getWorldPosAndNml(VecT& xyz, VecT& nml) + { + this->getIndexPos(xyz); + mStencil.moveTo(xyz); + nml = mStencil.gradient(xyz); + nml.normalize(); + xyz = mStencil.grid().indexToWorld(xyz); + } + + /// @brief Return the time of intersection along the index ray. + inline RealT getIndexTime() const { return mTime; } + + /// @brief Return the time of intersection along the world ray. + inline RealT getWorldTime() const + { + return mTime*mStencil.grid().transform().baseMap()->applyJacobian(mRay.dir()).length(); + } + +private: + + /// @brief Initiate the local voxel intersection test. + /// @warning Make sure to call this method before the local voxel intersection test. + inline void init(RealT t0) + { + mT[0] = t0; + mV[0] = static_cast(this->interpValue(t0)); + } + + inline void setRange(RealT t0, RealT t1) { mRay.setTimes(t0, t1); } + + /// @brief Return a const reference to the ray. + inline const RayT& ray() const { return mRay; } + + /// @brief Return true if a node of the specified type exists at ijk. + template + inline bool hasNode(const Coord& ijk) + { + return mStencil.accessor().template probeConstNode(ijk) != nullptr; + } + + /// @brief Return @c true if an intersection is detected. + /// @param ijk Grid coordinate of the node origin or voxel being tested. + /// @param time Time along the index ray being tested. + /// @warning Only if an intersection is detected is it safe to + /// call getIndexPos, getWorldPos and getWorldPosAndNml! + inline bool operator()(const Coord& ijk, RealT time) + { + ValueT V; + if (mStencil.accessor().probeValue(ijk, V) &&//within narrow band + V>mMinValue && V(this->interpValue(time)); + if (math::ZeroCrossing(mV[0], mV[1])) { + mTime = this->interpTime(); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + for (int n=0; Iterations>0 && n(this->interpValue(mTime)); + const int m = math::ZeroCrossing(mV[0], V) ? 1 : 0; + mV[m] = V; + mT[m] = mTime; + mTime = this->interpTime(); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + return true; + } + mT[0] = mT[1]; + mV[0] = mV[1]; + } + return false; + } + + inline RealT interpTime() + { + assert( math::isApproxLarger(mT[1], mT[0], RealT(1e-6) ) ); + return mT[0]+(mT[1]-mT[0])*mV[0]/(mV[0]-mV[1]); + } + + inline RealT interpValue(RealT time) + { + const VecT pos = mRay(time); + mStencil.moveTo(pos); + return mStencil.interpolation(pos) - mIsoValue; + } + + template friend struct math::LevelSetHDDA; + + RayT mRay; + StencilT mStencil; + RealT mTime;//time of intersection + ValueT mV[2]; + RealT mT[2]; + const ValueT mIsoValue, mMinValue, mMaxValue; + math::CoordBBox mBBox; +};// LinearSearchImpl + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_RAYINTERSECTOR_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/RayTracer.h b/openvdb/tools/RayTracer.h new file mode 100644 index 00000000..e56f5cfa --- /dev/null +++ b/openvdb/tools/RayTracer.h @@ -0,0 +1,1094 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file RayTracer.h +/// +/// @author Ken Museth +/// +/// @brief Defines two simple but multithreaded renders, a level-set +/// ray tracer and a volume render. To support these renders we also define +/// perspective and orthographic cameras (both designed to mimic a Houdini camera), +/// a Film class and some rather naive shaders. +/// +/// @note These classes are included mainly as reference implementations for +/// ray-tracing of OpenVDB volumes. In other words they are not intended for +/// production-quality rendering, but could be used for fast pre-visualization +/// or as a starting point for a more serious render. + +#ifndef OPENVDB_TOOLS_RAYTRACER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_RAYTRACER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef OPENVDB_TOOLS_RAYTRACER_USE_EXR +#include +#include +#include +#include +#include +#endif + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +// Forward declarations +class BaseCamera; +class BaseShader; + +/// @brief Ray-trace a volume. +template +inline void rayTrace(const GridT&, + const BaseShader&, + BaseCamera&, + size_t pixelSamples = 1, + unsigned int seed = 0, + bool threaded = true); + +/// @brief Ray-trace a volume using a given ray intersector. +template +inline void rayTrace(const GridT&, + const IntersectorT&, + const BaseShader&, + BaseCamera&, + size_t pixelSamples = 1, + unsigned int seed = 0, + bool threaded = true); + + +///////////////////////////////LEVEL SET RAY TRACER /////////////////////////////////////// + +/// @brief A (very) simple multithreaded ray tracer specifically for narrow-band level sets. +/// @details Included primarily as a reference implementation. +template > +class LevelSetRayTracer +{ +public: + using GridType = GridT; + using Vec3Type = typename IntersectorT::Vec3Type; + using RayType = typename IntersectorT::RayType; + + /// @brief Constructor based on an instance of the grid to be rendered. + LevelSetRayTracer(const GridT& grid, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples = 1, + unsigned int seed = 0); + + /// @brief Constructor based on an instance of the intersector + /// performing the ray-intersections. + LevelSetRayTracer(const IntersectorT& inter, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples = 1, + unsigned int seed = 0); + + /// @brief Copy constructor + LevelSetRayTracer(const LevelSetRayTracer& other); + + /// @brief Destructor + ~LevelSetRayTracer(); + + /// @brief Set the level set grid to be ray-traced + void setGrid(const GridT& grid); + + /// @brief Set the intersector that performs the actual + /// intersection of the rays against the narrow-band level set. + void setIntersector(const IntersectorT& inter); + + /// @brief Set the shader derived from the abstract BaseShader class. + /// + /// @note The shader is not assumed to be thread-safe so each + /// thread will get its only deep copy. For instance it could + /// contains a ValueAccessor into another grid with auxiliary + /// shading information. Thus, make sure it is relatively + /// light-weight and efficient to copy (which is the case for ValueAccesors). + void setShader(const BaseShader& shader); + + /// @brief Set the camera derived from the abstract BaseCamera class. + void setCamera(BaseCamera& camera); + + /// @brief Set the number of pixel samples and the seed for + /// jittered sub-rays. A value larger than one implies + /// anti-aliasing by jittered super-sampling. + /// @throw ValueError if pixelSamples is equal to zero. + void setPixelSamples(size_t pixelSamples, unsigned int seed = 0); + + /// @brief Perform the actual (potentially multithreaded) ray-tracing. + void render(bool threaded = true) const; + + /// @brief Public method required by tbb::parallel_for. + /// @warning Never call it directly. + void operator()(const tbb::blocked_range& range) const; + +private: + const bool mIsMaster; + double* mRand; + IntersectorT mInter; + std::unique_ptr mShader; + BaseCamera* mCamera; + size_t mSubPixels; +};// LevelSetRayTracer + + +///////////////////////////////VOLUME RENDER /////////////////////////////////////// + +/// @brief A (very) simple multithreaded volume render specifically for scalar density. +/// @details Included primarily as a reference implementation. +/// @note It will only compile if the IntersectorT is templated on a Grid with a +/// floating-point voxel type. +template +class VolumeRender +{ +public: + + using GridType = typename IntersectorT::GridType; + using RayType = typename IntersectorT::RayType; + using ValueType = typename GridType::ValueType; + using AccessorType = typename GridType::ConstAccessor; + using SamplerType = tools::GridSampler; + static_assert(std::is_floating_point::value, + "VolumeRender requires a floating-point-valued grid"); + + /// @brief Constructor taking an intersector and a base camera. + VolumeRender(const IntersectorT& inter, BaseCamera& camera); + + /// @brief Copy constructor which creates a thread-safe clone + VolumeRender(const VolumeRender& other); + + /// @brief Perform the actual (potentially multithreaded) volume rendering. + void render(bool threaded=true) const; + + /// @brief Set the camera derived from the abstract BaseCamera class. + void setCamera(BaseCamera& camera) { mCamera = &camera; } + + /// @brief Set the intersector that performs the actual + /// intersection of the rays against the volume. + void setIntersector(const IntersectorT& inter); + + /// @brief Set the vector components of a directional light source + /// @throw ArithmeticError if input is a null vector. + void setLightDir(Real x, Real y, Real z) { mLightDir = Vec3R(x,y,z).unit(); } + + /// @brief Set the color of the directional light source. + void setLightColor(Real r, Real g, Real b) { mLightColor = Vec3R(r,g,b); } + + /// @brief Set the integration step-size in voxel units for the primay ray. + void setPrimaryStep(Real primaryStep) { mPrimaryStep = primaryStep; } + + /// @brief Set the integration step-size in voxel units for the primay ray. + void setShadowStep(Real shadowStep) { mShadowStep = shadowStep; } + + /// @brief Set Scattering coefficients. + void setScattering(Real x, Real y, Real z) { mScattering = Vec3R(x,y,z); } + + /// @brief Set absorption coefficients. + void setAbsorption(Real x, Real y, Real z) { mAbsorption = Vec3R(x,y,z); } + + /// @brief Set parameter that imitates multi-scattering. A value + /// of zero implies no multi-scattering. + void setLightGain(Real gain) { mLightGain = gain; } + + /// @brief Set the cut-off value for density and transmittance. + void setCutOff(Real cutOff) { mCutOff = cutOff; } + + /// @brief Print parameters, statistics, memory usage and other information. + /// @param os a stream to which to write textual information + /// @param verboseLevel 1: print parameters only; 2: include grid + /// statistics; 3: include memory usage + void print(std::ostream& os = std::cout, int verboseLevel = 1); + + /// @brief Public method required by tbb::parallel_for. + /// @warning Never call it directly. + void operator()(const tbb::blocked_range& range) const; + +private: + + AccessorType mAccessor; + BaseCamera* mCamera; + std::unique_ptr mPrimary, mShadow; + Real mPrimaryStep, mShadowStep, mCutOff, mLightGain; + Vec3R mLightDir, mLightColor, mAbsorption, mScattering; +};//VolumeRender + +//////////////////////////////////////// FILM //////////////////////////////////////// + +/// @brief A simple class that allows for concurrent writes to pixels in an image, +/// background initialization of the image, and PPM or EXR file output. +class Film +{ +public: + /// @brief Floating-point RGBA components in the range [0, 1]. + /// @details This is our preferred representation for color processing. + struct RGBA + { + using ValueT = float; + + RGBA() : r(0), g(0), b(0), a(1) {} + explicit RGBA(ValueT intensity) : r(intensity), g(intensity), b(intensity), a(1) {} + RGBA(ValueT _r, ValueT _g, ValueT _b, ValueT _a = static_cast(1.0)): + r(_r), g(_g), b(_b), a(_a) + {} + RGBA(double _r, double _g, double _b, double _a = 1.0) + : r(static_cast(_r)) + , g(static_cast(_g)) + , b(static_cast(_b)) + , a(static_cast(_a)) + {} + + RGBA operator* (ValueT scale) const { return RGBA(r*scale, g*scale, b*scale);} + RGBA operator+ (const RGBA& rhs) const { return RGBA(r+rhs.r, g+rhs.g, b+rhs.b);} + RGBA operator* (const RGBA& rhs) const { return RGBA(r*rhs.r, g*rhs.g, b*rhs.b);} + RGBA& operator+=(const RGBA& rhs) { r+=rhs.r; g+=rhs.g; b+=rhs.b; a+=rhs.a; return *this;} + + void over(const RGBA& rhs) + { + const float s = rhs.a*(1.0f-a); + r = a*r+s*rhs.r; + g = a*g+s*rhs.g; + b = a*b+s*rhs.b; + a = a + s; + } + + ValueT r, g, b, a; + }; + + + Film(size_t width, size_t height) + : mWidth(width), mHeight(height), mSize(width*height), mPixels(new RGBA[mSize]) + { + } + Film(size_t width, size_t height, const RGBA& bg) + : mWidth(width), mHeight(height), mSize(width*height), mPixels(new RGBA[mSize]) + { + this->fill(bg); + } + + const RGBA& pixel(size_t w, size_t h) const + { + assert(w < mWidth); + assert(h < mHeight); + return mPixels[w + h*mWidth]; + } + + RGBA& pixel(size_t w, size_t h) + { + assert(w < mWidth); + assert(h < mHeight); + return mPixels[w + h*mWidth]; + } + + void fill(const RGBA& rgb=RGBA(0)) { for (size_t i=0; i buffer(new unsigned char[3*mSize]); + unsigned char *tmp = buffer.get(), *q = tmp; + RGBA* p = mPixels.get(); + size_t n = mSize; + while (n--) { + *q++ = static_cast(255.0f*(*p ).r); + *q++ = static_cast(255.0f*(*p ).g); + *q++ = static_cast(255.0f*(*p++).b); + } + + std::ofstream os(name.c_str(), std::ios_base::binary); + if (!os.is_open()) { + std::cerr << "Error opening PPM file \"" << name << "\"" << std::endl; + return; + } + + os << "P6\n" << mWidth << " " << mHeight << "\n255\n"; + os.write(reinterpret_cast(&(*tmp)), 3 * mSize * sizeof(unsigned char)); + } + +#ifdef OPENVDB_TOOLS_RAYTRACER_USE_EXR + void saveEXR(const std::string& fileName, size_t compression = 2, size_t threads = 8) + { + std::string name(fileName); + if (name.find_last_of(".") == std::string::npos) name.append(".exr"); + + if (threads>0) Imf::setGlobalThreadCount(threads); + Imf::Header header(mWidth, mHeight); + if (compression==0) header.compression() = Imf::NO_COMPRESSION; + if (compression==1) header.compression() = Imf::RLE_COMPRESSION; + if (compression>=2) header.compression() = Imf::ZIP_COMPRESSION; + header.channels().insert("R", Imf::Channel(Imf::FLOAT)); + header.channels().insert("G", Imf::Channel(Imf::FLOAT)); + header.channels().insert("B", Imf::Channel(Imf::FLOAT)); + header.channels().insert("A", Imf::Channel(Imf::FLOAT)); + + Imf::FrameBuffer framebuffer; + framebuffer.insert("R", Imf::Slice( Imf::FLOAT, (char *) &(mPixels[0].r), + sizeof (RGBA), sizeof (RGBA) * mWidth)); + framebuffer.insert("G", Imf::Slice( Imf::FLOAT, (char *) &(mPixels[0].g), + sizeof (RGBA), sizeof (RGBA) * mWidth)); + framebuffer.insert("B", Imf::Slice( Imf::FLOAT, (char *) &(mPixels[0].b), + sizeof (RGBA), sizeof (RGBA) * mWidth)); + framebuffer.insert("A", Imf::Slice( Imf::FLOAT, (char *) &(mPixels[0].a), + sizeof (RGBA), sizeof (RGBA) * mWidth)); + + Imf::OutputFile file(name.c_str(), header); + file.setFrameBuffer(framebuffer); + file.writePixels(mHeight); + } +#endif + + size_t width() const { return mWidth; } + size_t height() const { return mHeight; } + size_t numPixels() const { return mSize; } + const RGBA* pixels() const { return mPixels.get(); } + +private: + size_t mWidth, mHeight, mSize; + std::unique_ptr mPixels; +};// Film + + +//////////////////////////////////////// CAMERAS //////////////////////////////////////// + +/// Abstract base class for the perspective and orthographic cameras +class BaseCamera +{ +public: + BaseCamera(Film& film, const Vec3R& rotation, const Vec3R& translation, + double frameWidth, double nearPlane, double farPlane) + : mFilm(&film) + , mScaleWidth(frameWidth) + , mScaleHeight(frameWidth * double(film.height()) / double(film.width())) + { + assert(nearPlane > 0 && farPlane > nearPlane); + mScreenToWorld.accumPostRotation(math::X_AXIS, rotation[0] * M_PI / 180.0); + mScreenToWorld.accumPostRotation(math::Y_AXIS, rotation[1] * M_PI / 180.0); + mScreenToWorld.accumPostRotation(math::Z_AXIS, rotation[2] * M_PI / 180.0); + mScreenToWorld.accumPostTranslation(translation); + this->initRay(nearPlane, farPlane); + } + + virtual ~BaseCamera() {} + + Film::RGBA& pixel(size_t i, size_t j) { return mFilm->pixel(i, j); } + + size_t width() const { return mFilm->width(); } + size_t height() const { return mFilm->height(); } + + /// Rotate the camera so its negative z-axis points at xyz and its + /// y axis is in the plane of the xyz and up vectors. In other + /// words the camera will look at xyz and use up as the + /// horizontal direction. + void lookAt(const Vec3R& xyz, const Vec3R& up = Vec3R(0.0, 1.0, 0.0)) + { + const Vec3R orig = mScreenToWorld.applyMap(Vec3R(0.0)); + const Vec3R dir = orig - xyz; + try { + Mat4d xform = math::aim(dir, up); + xform.postTranslate(orig); + mScreenToWorld = math::AffineMap(xform); + this->initRay(mRay.t0(), mRay.t1()); + } catch (...) {} + } + + Vec3R rasterToScreen(double i, double j, double z) const + { + return Vec3R( (2 * i / double(mFilm->width()) - 1) * mScaleWidth, + (1 - 2 * j / double(mFilm->height())) * mScaleHeight, z ); + } + + /// @brief Return a Ray in world space given the pixel indices and + /// optional offsets in the range [0, 1]. An offset of 0.5 corresponds + /// to the center of the pixel. + virtual math::Ray getRay( + size_t i, size_t j, double iOffset = 0.5, double jOffset = 0.5) const = 0; + +protected: + void initRay(double t0, double t1) + { + mRay.setTimes(t0, t1); + mRay.setEye(mScreenToWorld.applyMap(Vec3R(0.0))); + mRay.setDir(mScreenToWorld.applyJacobian(Vec3R(0.0, 0.0, -1.0))); + } + + Film* mFilm; + double mScaleWidth, mScaleHeight; + math::Ray mRay; + math::AffineMap mScreenToWorld; +};// BaseCamera + + +class PerspectiveCamera: public BaseCamera +{ + public: + /// @brief Constructor + /// @param film film (i.e. image) defining the pixel resolution + /// @param rotation rotation in degrees of the camera in world space + /// (applied in x, y, z order) + /// @param translation translation of the camera in world-space units, + /// applied after rotation + /// @param focalLength focal length of the camera in mm + /// (the default of 50mm corresponds to Houdini's default camera) + /// @param aperture width in mm of the frame, i.e., the visible field + /// (the default 41.2136 mm corresponds to Houdini's default camera) + /// @param nearPlane depth of the near clipping plane in world-space units + /// @param farPlane depth of the far clipping plane in world-space units + /// + /// @details If no rotation or translation is provided, the camera is placed + /// at (0,0,0) in world space and points in the direction of the negative z axis. + PerspectiveCamera(Film& film, + const Vec3R& rotation = Vec3R(0.0), + const Vec3R& translation = Vec3R(0.0), + double focalLength = 50.0, + double aperture = 41.2136, + double nearPlane = 1e-3, + double farPlane = std::numeric_limits::max()) + : BaseCamera(film, rotation, translation, 0.5*aperture/focalLength, nearPlane, farPlane) + { + } + + ~PerspectiveCamera() override = default; + + /// @brief Return a Ray in world space given the pixel indices and + /// optional offsets in the range [0,1]. An offset of 0.5 corresponds + /// to the center of the pixel. + math::Ray getRay( + size_t i, size_t j, double iOffset = 0.5, double jOffset = 0.5) const override + { + math::Ray ray(mRay); + Vec3R dir = BaseCamera::rasterToScreen(Real(i) + iOffset, Real(j) + jOffset, -1.0); + dir = BaseCamera::mScreenToWorld.applyJacobian(dir); + dir.normalize(); + ray.scaleTimes(1.0/dir.dot(ray.dir())); + ray.setDir(dir); + return ray; + } + + /// @brief Return the horizontal field of view in degrees given a + /// focal lenth in mm and the specified aperture in mm. + static double focalLengthToFieldOfView(double length, double aperture) + { + return 360.0 / M_PI * atan(aperture/(2.0*length)); + } + /// @brief Return the focal length in mm given a horizontal field of + /// view in degrees and the specified aperture in mm. + static double fieldOfViewToFocalLength(double fov, double aperture) + { + return aperture/(2.0*(tan(fov * M_PI / 360.0))); + } +};// PerspectiveCamera + + +class OrthographicCamera: public BaseCamera +{ +public: + /// @brief Constructor + /// @param film film (i.e. image) defining the pixel resolution + /// @param rotation rotation in degrees of the camera in world space + /// (applied in x, y, z order) + /// @param translation translation of the camera in world-space units, + /// applied after rotation + /// @param frameWidth width in of the frame in world-space units + /// @param nearPlane depth of the near clipping plane in world-space units + /// @param farPlane depth of the far clipping plane in world-space units + /// + /// @details If no rotation or translation is provided, the camera is placed + /// at (0,0,0) in world space and points in the direction of the negative z axis. + OrthographicCamera(Film& film, + const Vec3R& rotation = Vec3R(0.0), + const Vec3R& translation = Vec3R(0.0), + double frameWidth = 1.0, + double nearPlane = 1e-3, + double farPlane = std::numeric_limits::max()) + : BaseCamera(film, rotation, translation, 0.5*frameWidth, nearPlane, farPlane) + { + } + ~OrthographicCamera() override = default; + + math::Ray getRay( + size_t i, size_t j, double iOffset = 0.5, double jOffset = 0.5) const override + { + math::Ray ray(mRay); + Vec3R eye = BaseCamera::rasterToScreen(Real(i) + iOffset, Real(j) + jOffset, 0.0); + ray.setEye(BaseCamera::mScreenToWorld.applyMap(eye)); + return ray; + } +};// OrthographicCamera + + +//////////////////////////////////////// SHADERS //////////////////////////////////////// + + +/// Abstract base class for the shaders +class BaseShader +{ +public: + using RayT = math::Ray; + BaseShader() {} + BaseShader(const BaseShader&) = default; + virtual ~BaseShader() = default; + /// @brief Defines the interface of the virtual function that returns a RGB color. + /// @param xyz World position of the intersection point. + /// @param nml Normal in world space at the intersection point. + /// @param dir Direction of the ray in world space. + virtual Film::RGBA operator()(const Vec3R& xyz, const Vec3R& nml, const Vec3R& dir) const = 0; + virtual BaseShader* copy() const = 0; +}; + + +/// @brief Shader that produces a simple matte. +/// +/// @details The color can either be constant (if GridT = +/// Film::RGBA which is the default) or defined in a separate Vec3 +/// color grid. Use SamplerType to define the order of interpolation +/// (default is zero order, i.e. closes-point). +template +class MatteShader: public BaseShader +{ +public: + MatteShader(const GridT& grid) : mAcc(grid.getAccessor()), mXform(&grid.transform()) {} + MatteShader(const MatteShader&) = default; + ~MatteShader() override = default; + Film::RGBA operator()(const Vec3R& xyz, const Vec3R&, const Vec3R&) const override + { + typename GridT::ValueType v = zeroVal(); + SamplerType::sample(mAcc, mXform->worldToIndex(xyz), v); + return Film::RGBA(v[0], v[1], v[2]); + } + BaseShader* copy() const override { return new MatteShader(*this); } + +private: + typename GridT::ConstAccessor mAcc; + const math::Transform* mXform; +}; + +// Template specialization using a constant color of the material. +template +class MatteShader: public BaseShader +{ +public: + MatteShader(const Film::RGBA& c = Film::RGBA(1.0f)): mRGBA(c) {} + MatteShader(const MatteShader&) = default; + ~MatteShader() override = default; + Film::RGBA operator()(const Vec3R&, const Vec3R&, const Vec3R&) const override + { + return mRGBA; + } + BaseShader* copy() const override { return new MatteShader(*this); } + +private: + const Film::RGBA mRGBA; +}; + + +/// @brief Color shader that treats the surface normal (x, y, z) as an +/// RGB color. +/// +/// @details The color can either be constant (if GridT = +/// Film::RGBA which is the default) or defined in a separate Vec3 +/// color grid. Use SamplerType to define the order of interpolation +/// (default is zero order, i.e. closes-point). +template +class NormalShader: public BaseShader +{ +public: + NormalShader(const GridT& grid) : mAcc(grid.getAccessor()), mXform(&grid.transform()) {} + NormalShader(const NormalShader&) = default; + ~NormalShader() override = default; + Film::RGBA operator()(const Vec3R& xyz, const Vec3R& normal, const Vec3R&) const override + { + typename GridT::ValueType v = zeroVal(); + SamplerType::sample(mAcc, mXform->worldToIndex(xyz), v); + return Film::RGBA(v[0]*(normal[0]+1.0), v[1]*(normal[1]+1.0), v[2]*(normal[2]+1.0)); + } + BaseShader* copy() const override { return new NormalShader(*this); } + +private: + typename GridT::ConstAccessor mAcc; + const math::Transform* mXform; +}; + +// Template specialization using a constant color of the material. +template +class NormalShader: public BaseShader +{ +public: + NormalShader(const Film::RGBA& c = Film::RGBA(1.0f)) : mRGBA(c*0.5f) {} + NormalShader(const NormalShader&) = default; + ~NormalShader() override = default; + Film::RGBA operator()(const Vec3R&, const Vec3R& normal, const Vec3R&) const override + { + return mRGBA * Film::RGBA(normal[0] + 1.0, normal[1] + 1.0, normal[2] + 1.0); + } + BaseShader* copy() const override { return new NormalShader(*this); } + +private: + const Film::RGBA mRGBA; +}; + + +/// @brief Color shader that treats position (x, y, z) as an RGB color in a +/// cube defined from an axis-aligned bounding box in world space. +/// +/// @details The color can either be constant (if GridT = +/// Film::RGBA which is the default) or defined in a separate Vec3 +/// color grid. Use SamplerType to define the order of interpolation +/// (default is zero order, i.e. closes-point). +template +class PositionShader: public BaseShader +{ +public: + PositionShader(const math::BBox& bbox, const GridT& grid) + : mMin(bbox.min()) + , mInvDim(1.0/bbox.extents()) + , mAcc(grid.getAccessor()) + , mXform(&grid.transform()) + { + } + PositionShader(const PositionShader&) = default; + ~PositionShader() override = default; + Film::RGBA operator()(const Vec3R& xyz, const Vec3R&, const Vec3R&) const override + { + typename GridT::ValueType v = zeroVal(); + SamplerType::sample(mAcc, mXform->worldToIndex(xyz), v); + const Vec3R rgb = (xyz - mMin) * mInvDim; + return Film::RGBA(v[0],v[1],v[2]) * Film::RGBA(rgb[0], rgb[1], rgb[2]); + } + BaseShader* copy() const override { return new PositionShader(*this); } + +private: + const Vec3R mMin, mInvDim; + typename GridT::ConstAccessor mAcc; + const math::Transform* mXform; +}; + +// Template specialization using a constant color of the material. +template +class PositionShader: public BaseShader +{ +public: + PositionShader(const math::BBox& bbox, const Film::RGBA& c = Film::RGBA(1.0f)) + : mMin(bbox.min()), mInvDim(1.0/bbox.extents()), mRGBA(c) {} + PositionShader(const PositionShader&) = default; + ~PositionShader() override = default; + Film::RGBA operator()(const Vec3R& xyz, const Vec3R&, const Vec3R&) const override + { + const Vec3R rgb = (xyz - mMin)*mInvDim; + return mRGBA*Film::RGBA(rgb[0], rgb[1], rgb[2]); + } + BaseShader* copy() const override { return new PositionShader(*this); } + +private: + const Vec3R mMin, mInvDim; + const Film::RGBA mRGBA; +}; + + +/// @brief Simple diffuse Lambertian surface shader. +/// +/// @details The diffuse color can either be constant (if GridT = +/// Film::RGBA which is the default) or defined in a separate Vec3 +/// color grid. Lambertian implies that the (radiant) intensity is +/// directly proportional to the cosine of the angle between the +/// surface normal and the direction of the light source. Use +/// SamplerType to define the order of interpolation (default is +/// zero order, i.e. closes-point). +template +class DiffuseShader: public BaseShader +{ +public: + DiffuseShader(const GridT& grid): mAcc(grid.getAccessor()), mXform(&grid.transform()) {} + DiffuseShader(const DiffuseShader&) = default; + ~DiffuseShader() override = default; + Film::RGBA operator()(const Vec3R& xyz, const Vec3R& normal, const Vec3R& rayDir) const override + { + typename GridT::ValueType v = zeroVal(); + SamplerType::sample(mAcc, mXform->worldToIndex(xyz), v); + // We take the abs of the dot product corresponding to having + // light sources at +/- rayDir, i.e., two-sided shading. + return Film::RGBA(v[0],v[1],v[2]) + * static_cast(math::Abs(normal.dot(rayDir))); + } + BaseShader* copy() const override { return new DiffuseShader(*this); } + +private: + typename GridT::ConstAccessor mAcc; + const math::Transform* mXform; +}; + +// Template specialization using a constant color of the material. +template +class DiffuseShader: public BaseShader +{ +public: + DiffuseShader(const Film::RGBA& d = Film::RGBA(1.0f)): mRGBA(d) {} + DiffuseShader(const DiffuseShader&) = default; + ~DiffuseShader() override = default; + Film::RGBA operator()(const Vec3R&, const Vec3R& normal, const Vec3R& rayDir) const override + { + // We assume a single directional light source at the camera, + // so the cosine of the angle between the surface normal and the + // direction of the light source becomes the dot product of the + // surface normal and inverse direction of the ray. We also ignore + // negative dot products, corresponding to strict one-sided shading. + //return mRGBA * math::Max(0.0, normal.dot(-rayDir)); + + // We take the abs of the dot product corresponding to having + // light sources at +/- rayDir, i.e., two-sided shading. + return mRGBA * static_cast(math::Abs(normal.dot(rayDir))); + } + BaseShader* copy() const override { return new DiffuseShader(*this); } + +private: + const Film::RGBA mRGBA; +}; + + +//////////////////////////////////////// RAYTRACER //////////////////////////////////////// + +template +inline void rayTrace(const GridT& grid, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples, + unsigned int seed, + bool threaded) +{ + LevelSetRayTracer > + tracer(grid, shader, camera, pixelSamples, seed); + tracer.render(threaded); +} + + +template +inline void rayTrace(const GridT&, + const IntersectorT& inter, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples, + unsigned int seed, + bool threaded) +{ + LevelSetRayTracer tracer(inter, shader, camera, pixelSamples, seed); + tracer.render(threaded); +} + + +//////////////////////////////////////// LevelSetRayTracer //////////////////////////////////////// + + +template +inline LevelSetRayTracer:: +LevelSetRayTracer(const GridT& grid, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples, + unsigned int seed) + : mIsMaster(true), + mRand(nullptr), + mInter(grid), + mShader(shader.copy()), + mCamera(&camera) +{ + this->setPixelSamples(pixelSamples, seed); +} + +template +inline LevelSetRayTracer:: +LevelSetRayTracer(const IntersectorT& inter, + const BaseShader& shader, + BaseCamera& camera, + size_t pixelSamples, + unsigned int seed) + : mIsMaster(true), + mRand(nullptr), + mInter(inter), + mShader(shader.copy()), + mCamera(&camera) +{ + this->setPixelSamples(pixelSamples, seed); +} + +template +inline LevelSetRayTracer:: +LevelSetRayTracer(const LevelSetRayTracer& other) : + mIsMaster(false), + mRand(other.mRand), + mInter(other.mInter), + mShader(other.mShader->copy()), + mCamera(other.mCamera), + mSubPixels(other.mSubPixels) +{ +} + +template +inline LevelSetRayTracer:: +~LevelSetRayTracer() +{ + if (mIsMaster) delete [] mRand; +} + +template +inline void LevelSetRayTracer:: +setGrid(const GridT& grid) +{ + assert(mIsMaster); + mInter = IntersectorT(grid); +} + +template +inline void LevelSetRayTracer:: +setIntersector(const IntersectorT& inter) +{ + assert(mIsMaster); + mInter = inter; +} + +template +inline void LevelSetRayTracer:: +setShader(const BaseShader& shader) +{ + assert(mIsMaster); + mShader.reset(shader.copy()); +} + +template +inline void LevelSetRayTracer:: +setCamera(BaseCamera& camera) +{ + assert(mIsMaster); + mCamera = &camera; +} + +template +inline void LevelSetRayTracer:: +setPixelSamples(size_t pixelSamples, unsigned int seed) +{ + assert(mIsMaster); + if (pixelSamples == 0) { + OPENVDB_THROW(ValueError, "pixelSamples must be larger than zero!"); + } + mSubPixels = pixelSamples - 1; + delete [] mRand; + if (mSubPixels > 0) { + mRand = new double[16]; + math::Rand01 rand(seed);//offsets for anti-aliaing by jittered super-sampling + for (size_t i=0; i<16; ++i) mRand[i] = rand(); + } else { + mRand = nullptr; + } +} + +template +inline void LevelSetRayTracer:: +render(bool threaded) const +{ + tbb::blocked_range range(0, mCamera->height()); + threaded ? tbb::parallel_for(range, *this) : (*this)(range); +} + +template +inline void LevelSetRayTracer:: +operator()(const tbb::blocked_range& range) const +{ + const BaseShader& shader = *mShader; + Vec3Type xyz, nml; + const float frac = 1.0f / (1.0f + float(mSubPixels)); + for (size_t j=range.begin(), n=0, je = range.end(); jwidth(); ipixel(i,j); + RayType ray = mCamera->getRay(i, j);//primary ray + Film::RGBA c = mInter.intersectsWS(ray, xyz, nml) ? shader(xyz, nml, ray.dir()) : bg; + for (size_t k=0; kgetRay(i, j, mRand[n & 15], mRand[(n+1) & 15]); + c += mInter.intersectsWS(ray, xyz, nml) ? shader(xyz, nml, ray.dir()) : bg; + }//loop over sub-pixels + bg = c*frac; + }//loop over image height + }//loop over image width +} + +//////////////////////////////////////// VolumeRender //////////////////////////////////////// + +template +inline VolumeRender:: +VolumeRender(const IntersectorT& inter, BaseCamera& camera) + : mAccessor(inter.grid().getConstAccessor()) + , mCamera(&camera) + , mPrimary(new IntersectorT(inter)) + , mShadow(new IntersectorT(inter)) + , mPrimaryStep(1.0) + , mShadowStep(3.0) + , mCutOff(0.005) + , mLightGain(0.2) + , mLightDir(Vec3R(0.3, 0.3, 0).unit()) + , mLightColor(0.7, 0.7, 0.7) + , mAbsorption(0.1) + , mScattering(1.5) +{ +} + +template +inline VolumeRender:: +VolumeRender(const VolumeRender& other) + : mAccessor(other.mAccessor) + , mCamera(other.mCamera) + , mPrimary(new IntersectorT(*(other.mPrimary))) + , mShadow(new IntersectorT(*(other.mShadow))) + , mPrimaryStep(other.mPrimaryStep) + , mShadowStep(other.mShadowStep) + , mCutOff(other.mCutOff) + , mLightGain(other.mLightGain) + , mLightDir(other.mLightDir) + , mLightColor(other.mLightColor) + , mAbsorption(other.mAbsorption) + , mScattering(other.mScattering) +{ +} + +template +inline void VolumeRender:: +print(std::ostream& os, int verboseLevel) +{ + if (verboseLevel>0) { + os << "\nPrimary step: " << mPrimaryStep + << "\nShadow step: " << mShadowStep + << "\nCutoff: " << mCutOff + << "\nLightGain: " << mLightGain + << "\nLightDir: " << mLightDir + << "\nLightColor: " << mLightColor + << "\nAbsorption: " << mAbsorption + << "\nScattering: " << mScattering << std::endl; + } + mPrimary->print(os, verboseLevel); +} + +template +inline void VolumeRender:: +setIntersector(const IntersectorT& inter) +{ + mPrimary.reset(new IntersectorT(inter)); + mShadow.reset( new IntersectorT(inter)); +} + +template +inline void VolumeRender:: +render(bool threaded) const +{ + tbb::blocked_range range(0, mCamera->height()); + threaded ? tbb::parallel_for(range, *this) : (*this)(range); +} + +template +inline void VolumeRender:: +operator()(const tbb::blocked_range& range) const +{ + SamplerType sampler(mAccessor, mShadow->grid().transform());//light-weight wrapper + + // Any variable prefixed with p (or s) means it's associated with a primary (or shadow) ray + const Vec3R extinction = -mScattering-mAbsorption, One(1.0); + const Vec3R albedo = mLightColor*mScattering/(mScattering+mAbsorption);//single scattering + const Real sGain = mLightGain;//in-scattering along shadow ray + const Real pStep = mPrimaryStep;//Integration step along primary ray in voxel units + const Real sStep = mShadowStep;//Integration step along shadow ray in voxel units + const Real cutoff = mCutOff;//Cutoff for density and transmittance + + // For the sake of completeness we show how to use two different + // methods (hits/march) in VolumeRayIntersector that produce + // segments along the ray that intersects active values. Comment out + // the line below to use VolumeRayIntersector::march instead of + // VolumeRayIntersector::hits. +#define USE_HITS +#ifdef USE_HITS + std::vector pTS, sTS; + //std::deque pTS, sTS; +#endif + + RayType sRay(Vec3R(0), mLightDir);//Shadow ray + for (size_t j=range.begin(), je = range.end(); jwidth(); ipixel(i, j); + bg.a = bg.r = bg.g = bg.b = 0; + RayType pRay = mCamera->getRay(i, j);// Primary ray + if( !mPrimary->setWorldRay(pRay)) continue; + Vec3R pTrans(1.0), pLumi(0.0); +#ifndef USE_HITS + Real pT0, pT1; + while (mPrimary->march(pT0, pT1)) { + for (Real pT = pStep*ceil(pT0/pStep); pT <= pT1; pT += pStep) { +#else + mPrimary->hits(pTS); + for (size_t k=0; kgetWorldPos(pT); + const Real density = sampler.wsSample(pPos); + if (density < cutoff) continue; + const Vec3R dT = math::Exp(extinction * density * pStep); + Vec3R sTrans(1.0); + sRay.setEye(pPos); + if( !mShadow->setWorldRay(sRay)) continue; +#ifndef USE_HITS + Real sT0, sT1; + while (mShadow->march(sT0, sT1)) { + for (Real sT = sStep*ceil(sT0/sStep); sT <= sT1; sT+= sStep) { +#else + mShadow->hits(sTS); + for (size_t l=0; lgetWorldPos(sT)); + if (d < cutoff) continue; + sTrans *= math::Exp(extinction * d * sStep/(1.0+sT*sGain)); + if (sTrans.lengthSqr()(pLumi[0]); + bg.g = static_cast(pLumi[1]); + bg.b = static_cast(pLumi[2]); + bg.a = static_cast(1.0f - pTrans.sum()/3.0f); + }//Horizontal pixel scan + }//Vertical pixel scan +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_RAYTRACER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/SignedFloodFill.h b/openvdb/tools/SignedFloodFill.h new file mode 100644 index 00000000..d2dc3298 --- /dev/null +++ b/openvdb/tools/SignedFloodFill.h @@ -0,0 +1,279 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file SignedFloodFill.h +/// +/// @brief Propagate the signs of distance values from the active voxels +/// in the narrow band to the inactive values outside the narrow band. +/// +/// @author Ken Museth + +#ifndef OPENVDB_TOOLS_SIGNEDFLOODFILL_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_SIGNEDFLOODFILL_HAS_BEEN_INCLUDED + +#include +#include // for Index typedef +#include // for math::negative +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Set the values of all inactive voxels and tiles of a narrow-band +/// level set from the signs of the active voxels, setting outside values to +/// +background and inside values to -background. +/// +/// @warning This method should only be used on closed, symmetric narrow-band level sets. +/// +/// @note If a LeafManager is used the cached leaf nodes are reused, +/// resulting in slightly better overall performance. +/// +/// @param tree Tree or LeafManager that will be flood filled. +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +/// @param minLevel Specify the lowest tree level to process (leafnode level = 0) +/// +/// @throw TypeError if the ValueType of @a tree is not floating-point. +template +inline void +signedFloodFill(TreeOrLeafManagerT& tree, bool threaded = true, + size_t grainSize = 1, Index minLevel = 0); + + +/// @brief Set the values of all inactive voxels and tiles of a narrow-band +/// level set from the signs of the active voxels, setting exterior values to +/// @a outsideWidth and interior values to @a insideWidth. Set the background value +/// of this tree to @a outsideWidth. +/// +/// @warning This method should only be used on closed, narrow-band level sets. +/// +/// @note If a LeafManager is used the cached leaf nodes are reused +/// resulting in slightly better overall performance. +/// +/// @param tree Tree or LeafManager that will be flood filled +/// @param outsideWidth the width of the outside of the narrow band +/// @param insideWidth the width of the inside of the narrow band +/// @param threaded enable or disable threading (threading is enabled by default) +/// @param grainSize used to control the threading granularity (default is 1) +/// @param minLevel Specify the lowest tree level to process (leafnode level = 0) +/// +/// @throw TypeError if the ValueType of @a tree is not floating-point. +template +inline void +signedFloodFillWithValues( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& outsideWidth, + const typename TreeOrLeafManagerT::ValueType& insideWidth, + bool threaded = true, + size_t grainSize = 1, + Index minLevel = 0); + + +////////////////////////// Implementation of SignedFloodFill //////////////////////////// + + +template +class SignedFloodFillOp +{ +public: + using ValueT = typename TreeOrLeafManagerT::ValueType; + using RootT = typename TreeOrLeafManagerT::RootNodeType; + using LeafT = typename TreeOrLeafManagerT::LeafNodeType; + static_assert(std::is_signed::value, + "signed flood fill is supported only for signed value grids"); + + SignedFloodFillOp(const TreeOrLeafManagerT& tree, Index minLevel = 0) + : mOutside(ValueT(math::Abs(tree.background()))) + , mInside(ValueT(math::negative(mOutside))) + , mMinLevel(minLevel) + { + } + + SignedFloodFillOp(ValueT outsideValue, ValueT insideValue, Index minLevel = 0) + : mOutside(ValueT(math::Abs(outsideValue))) + , mInside(ValueT(math::negative(math::Abs(insideValue)))) + , mMinLevel(minLevel) + { + } + + // Nothing to do at the leaf node level + void operator()(LeafT& leaf) const + { + if (LeafT::LEVEL < mMinLevel) return; + + if (!leaf.allocate()) return; // this assures that the buffer is allocated and in-memory + + const typename LeafT::NodeMaskType& valueMask = leaf.getValueMask(); + // WARNING: "Never do what you're about to see at home, we're what you call experts!" + typename LeafT::ValueType* buffer = + const_cast(&(leaf.getFirstValue())); + + const Index first = valueMask.findFirstOn(); + if (first < LeafT::SIZE) { + bool xInside = buffer[first]<0, yInside = xInside, zInside = xInside; + for (Index x = 0; x != (1 << LeafT::LOG2DIM); ++x) { + const Index x00 = x << (2 * LeafT::LOG2DIM); + if (valueMask.isOn(x00)) xInside = buffer[x00] < 0; // element(x, 0, 0) + yInside = xInside; + for (Index y = 0; y != (1 << LeafT::LOG2DIM); ++y) { + const Index xy0 = x00 + (y << LeafT::LOG2DIM); + if (valueMask.isOn(xy0)) yInside = buffer[xy0] < 0; // element(x, y, 0) + zInside = yInside; + for (Index z = 0; z != (1 << LeafT::LOG2DIM); ++z) { + const Index xyz = xy0 + z; // element(x, y, z) + if (valueMask.isOn(xyz)) { + zInside = buffer[xyz] < 0; + } else { + buffer[xyz] = zInside ? mInside : mOutside; + } + } + } + } + } else {// if no active voxels exist simply use the sign of the first value + leaf.fill(buffer[0] < 0 ? mInside : mOutside); + } + } + + // Prune the child nodes of the internal nodes + template + void operator()(NodeT& node) const + { + if (NodeT::LEVEL < mMinLevel) return; + // We assume the child nodes have already been flood filled! + const typename NodeT::NodeMaskType& childMask = node.getChildMask(); + // WARNING: "Never do what you're about to see at home, we're what you call experts!" + typename NodeT::UnionType* table = const_cast(node.getTable()); + + const Index first = childMask.findFirstOn(); + if (first < NodeT::NUM_VALUES) { + bool xInside = table[first].getChild()->getFirstValue()<0; + bool yInside = xInside, zInside = xInside; + for (Index x = 0; x != (1 << NodeT::LOG2DIM); ++x) { + const int x00 = x << (2 * NodeT::LOG2DIM); // offset for block(x, 0, 0) + if (childMask.isOn(x00)) xInside = table[x00].getChild()->getLastValue()<0; + yInside = xInside; + for (Index y = 0; y != (1 << NodeT::LOG2DIM); ++y) { + const Index xy0 = x00 + (y << NodeT::LOG2DIM); // offset for block(x, y, 0) + if (childMask.isOn(xy0)) yInside = table[xy0].getChild()->getLastValue()<0; + zInside = yInside; + for (Index z = 0; z != (1 << NodeT::LOG2DIM); ++z) { + const Index xyz = xy0 + z; // offset for block(x, y, z) + if (childMask.isOn(xyz)) { + zInside = table[xyz].getChild()->getLastValue()<0; + } else { + table[xyz].setValue(zInside ? mInside : mOutside); + } + } + } + } + } else {//no child nodes exist simply use the sign of the first tile value. + const ValueT v = table[0].getValue()<0 ? mInside : mOutside; + for (Index i = 0; i < NodeT::NUM_VALUES; ++i) table[i].setValue(v); + } + } + + // Prune the child nodes of the root node + void operator()(RootT& root) const + { + if (RootT::LEVEL < mMinLevel) return; + using ChildT = typename RootT::ChildNodeType; + // Insert the child nodes into a map sorted according to their origin + std::map nodeKeys; + typename RootT::ChildOnIter it = root.beginChildOn(); + for (; it; ++it) nodeKeys.insert(std::pair(it.getCoord(), &(*it))); + static const Index DIM = RootT::ChildNodeType::DIM; + + // We employ a simple z-scanline algorithm that inserts inactive tiles with + // the inside value if they are sandwiched between inside child nodes only! + typename std::map::const_iterator b = nodeKeys.begin(), e = nodeKeys.end(); + if ( b == e ) return; + for (typename std::map::const_iterator a = b++; b != e; ++a, ++b) { + Coord d = b->first - a->first; // delta of neighboring coordinates + if (d[0]!=0 || d[1]!=0 || d[2]==Int32(DIM)) continue;// not same z-scanline or neighbors + const ValueT fill[] = { a->second->getLastValue(), b->second->getFirstValue() }; + if (!(fill[0] < 0) || !(fill[1] < 0)) continue; // scanline isn't inside + Coord c = a->first + Coord(0u, 0u, DIM); + for (; c[2] != b->first[2]; c[2] += DIM) root.addTile(c, mInside, false); + } + root.setBackground(mOutside, /*updateChildNodes=*/false); + } + +private: + const ValueT mOutside, mInside; + const Index mMinLevel; +};// SignedFloodFillOp + + +//{ +/// @cond OPENVDB_SIGNED_FLOOD_FILL_INTERNAL + +template +inline +typename std::enable_if::value, void>::type +doSignedFloodFill(TreeOrLeafManagerT& tree, + typename TreeOrLeafManagerT::ValueType outsideValue, + typename TreeOrLeafManagerT::ValueType insideValue, + bool threaded, + size_t grainSize, + Index minLevel) +{ + tree::NodeManager nodes(tree); + SignedFloodFillOp op(outsideValue, insideValue, minLevel); + nodes.foreachBottomUp(op, threaded, grainSize); +} + +// Dummy (no-op) implementation for unsigned types +template +inline +typename std::enable_if::value, void>::type +doSignedFloodFill(TreeOrLeafManagerT&, + const typename TreeOrLeafManagerT::ValueType&, + const typename TreeOrLeafManagerT::ValueType&, + bool, + size_t, + Index) +{ + OPENVDB_THROW(TypeError, + "signedFloodFill is supported only for signed value grids"); +} + +/// @endcond +//} + + +// If the narrow-band is symmetric and unchanged +template +inline void +signedFloodFillWithValues( + TreeOrLeafManagerT& tree, + const typename TreeOrLeafManagerT::ValueType& outsideValue, + const typename TreeOrLeafManagerT::ValueType& insideValue, + bool threaded, + size_t grainSize, + Index minLevel) +{ + doSignedFloodFill(tree, outsideValue, insideValue, threaded, grainSize, minLevel); +} + + +template +inline void +signedFloodFill(TreeOrLeafManagerT& tree, + bool threaded, + size_t grainSize, + Index minLevel) +{ + const typename TreeOrLeafManagerT::ValueType v = tree.root().background(); + doSignedFloodFill(tree, v, math::negative(v), threaded, grainSize, minLevel); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_RESETBACKGROUND_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/Statistics.h b/openvdb/tools/Statistics.h new file mode 100644 index 00000000..dfbc857b --- /dev/null +++ b/openvdb/tools/Statistics.h @@ -0,0 +1,407 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Statistics.h +/// +/// @brief Functions to efficiently compute histograms, extremas +/// (min/max) and statistics (mean, variance, etc.) of grid values + +#ifndef OPENVDB_TOOLS_STATISTICS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_STATISTICS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include "ValueTransformer.h" + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Iterate over a scalar grid and compute a histogram of the values +/// of the voxels that are visited, or iterate over a vector-valued grid +/// and compute a histogram of the magnitudes of the vectors. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param minVal the smallest value that can be added to the histogram +/// @param maxVal the largest value that can be added to the histogram +/// @param numBins the number of histogram bins +/// @param threaded if true, iterate over the grid in parallel +template +inline math::Histogram +histogram(const IterT& iter, double minVal, double maxVal, + size_t numBins = 10, bool threaded = true); + +/// @brief Iterate over a scalar grid and compute extrema (min/max) of the +/// values of the voxels that are visited, or iterate over a vector-valued grid +/// and compute extrema of the magnitudes of the vectors. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param threaded if true, iterate over the grid in parallel +template +inline math::Extrema +extrema(const IterT& iter, bool threaded = true); + +/// @brief Iterate over a scalar grid and compute statistics (mean, variance, etc.) +/// of the values of the voxels that are visited, or iterate over a vector-valued grid +/// and compute statistics of the magnitudes of the vectors. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param threaded if true, iterate over the grid in parallel +template +inline math::Stats +statistics(const IterT& iter, bool threaded = true); + +/// @brief Iterate over a grid and compute extrema (min/max) of +/// the values produced by applying the given functor at each voxel that is visited. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param op a functor of the form void op(const IterT&, math::Stats&), +/// where @c IterT is the type of @a iter, that inserts zero or more +/// floating-point values into the provided @c math::Stats object +/// @param threaded if true, iterate over the grid in parallel +/// @note When @a threaded is true, each thread gets its own copy of the functor. +/// +/// @par Example: +/// Compute statistics of just the active and positive-valued voxels of a scalar, +/// floating-point grid. +/// @code +/// struct Local { +/// static inline +/// void addIfPositive(const FloatGrid::ValueOnCIter& iter, math::Extrema& ex) +/// { +/// const float f = *iter; +/// if (f > 0.0) { +/// if (iter.isVoxelValue()) ex.add(f); +/// else ex.add(f, iter.getVoxelCount()); +/// } +/// } +/// }; +/// FloatGrid grid = ...; +/// math::Extrema stats = +/// tools::extrema(grid.cbeginValueOn(), Local::addIfPositive, /*threaded=*/true); +/// @endcode +template +inline math::Extrema +extrema(const IterT& iter, const ValueOp& op, bool threaded); + +/// @brief Iterate over a grid and compute statistics (mean, variance, etc.) of +/// the values produced by applying the given functor at each voxel that is visited. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param op a functor of the form void op(const IterT&, math::Stats&), +/// where @c IterT is the type of @a iter, that inserts zero or more +/// floating-point values into the provided @c math::Stats object +/// @param threaded if true, iterate over the grid in parallel +/// @note When @a threaded is true, each thread gets its own copy of the functor. +/// +/// @par Example: +/// Compute statistics of just the active and positive-valued voxels of a scalar, +/// floating-point grid. +/// @code +/// struct Local { +/// static inline +/// void addIfPositive(const FloatGrid::ValueOnCIter& iter, math::Stats& stats) +/// { +/// const float f = *iter; +/// if (f > 0.0) { +/// if (iter.isVoxelValue()) stats.add(f); +/// else stats.add(f, iter.getVoxelCount()); +/// } +/// } +/// }; +/// FloatGrid grid = ...; +/// math::Stats stats = +/// tools::statistics(grid.cbeginValueOn(), Local::addIfPositive, /*threaded=*/true); +/// @endcode +template +inline math::Stats +statistics(const IterT& iter, const ValueOp& op, bool threaded); + + +/// @brief Iterate over a grid and compute statistics (mean, variance, etc.) +/// of the values produced by applying a given operator (see math/Operators.h) +/// at each voxel that is visited. +/// @param iter an iterator over the values of a grid or its tree +/// (@c Grid::ValueOnCIter, @c Tree::ValueOffIter, etc.) +/// @param op an operator object with a method of the form +/// double result(Accessor&, const Coord&) +/// @param threaded if true, iterate over the grid in parallel +/// @note World-space operators, whose @c result() methods are of the form +/// double result(const Map&, Accessor&, const Coord&), must be wrapped +/// in a math::MapAdapter. +/// @note Vector-valued operators like math::Gradient must be wrapped in an adapter +/// such as math::OpMagnitude. +/// +/// @par Example: +/// Compute statistics of the magnitude of the gradient at the active voxels of +/// a scalar, floating-point grid. (Note the use of the math::MapAdapter and +/// math::OpMagnitude adapters.) +/// @code +/// FloatGrid grid = ...; +/// +/// // Assume that we know that the grid has a uniform scale map. +/// using MapType = math::UniformScaleMap; +/// // Specify a world-space gradient operator that uses first-order differencing. +/// using GradientOp = math::Gradient; +/// // Wrap the operator with an adapter that computes the magnitude of the gradient. +/// using MagnitudeOp = math::OpMagnitude; +/// // Wrap the operator with an adapter that associates a map with it. +/// using CompoundOp = math::MapAdapter; +/// +/// if (MapType::Ptr map = grid.constTransform().constMap()) { +/// math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), CompoundOp(*map)); +/// } +/// @endcode +/// +/// @par Example: +/// Compute statistics of the divergence at the active voxels of a vector-valued grid. +/// @code +/// Vec3SGrid grid = ...; +/// +/// // Assume that we know that the grid has a uniform scale map. +/// using MapType = math::UniformScaleMap; +/// // Specify a world-space divergence operator that uses first-order differencing. +/// using DivergenceOp = math::Divergence; +/// // Wrap the operator with an adapter that associates a map with it. +/// using CompoundOp = math::MapAdapter; +/// +/// if (MapType::Ptr map = grid.constTransform().constMap()) { +/// math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), CompoundOp(*map)); +/// } +/// @endcode +/// +/// @par Example: +/// As above, but computing the divergence in index space. +/// @code +/// Vec3SGrid grid = ...; +/// +/// // Specify an index-space divergence operator that uses first-order differencing. +/// using DivergenceOp = math::ISDivergence; +/// +/// math::Stats stats = tools::opStatistics(grid.cbeginValueOn(), DivergenceOp()); +/// @endcode +template +inline math::Stats +opStatistics(const IterT& iter, const OperatorT& op = OperatorT(), bool threaded = true); + +/// @brief Same as opStatistics except it returns a math::Extrema vs a math::Stats +template +inline math::Extrema +opExtrema(const IterT& iter, const OperatorT& op = OperatorT(), bool threaded = true); + +//////////////////////////////////////// + + +namespace stats_internal { + +/// @todo This traits class is needed because tree::TreeValueIteratorBase uses +/// the name ValueT for the type of the value to which the iterator points, +/// whereas node-level iterators use the name ValueType. +template +struct IterTraits { + using ValueType = typename IterT::ValueType; +}; + +template +struct IterTraits > { + using ValueType = typename tree::TreeValueIteratorBase::ValueT; +}; + + +// Helper class to compute a scalar value from either a scalar or a vector value +// (the latter by computing the vector's magnitude) +template struct GetValImpl; + +template +struct GetValImpl { + static inline double get(const T& val) { return double(val); } +}; + +template +struct GetValImpl { + static inline double get(const T& val) { return val.length(); } +}; + + +// Helper class to compute a scalar value from a tree or node iterator +// that points to a value in either a scalar or a vector grid, and to +// add that value to a math::Stats object. +template +struct GetVal +{ + using ValueT = typename IterTraits::ValueType; + using ImplT = GetValImpl::IsVec>; + + inline void operator()(const IterT& iter, StatsT& stats) const { + if (iter.isVoxelValue()) stats.add(ImplT::get(*iter)); + else stats.add(ImplT::get(*iter), iter.getVoxelCount()); + } +}; + +// Helper class to accumulate scalar voxel values or vector voxel magnitudes +// into a math::Stats object +template +struct StatsOp +{ + StatsOp(const ValueOp& op): getValue(op) {} + + // Accumulate voxel and tile values into this functor's Stats object. + inline void operator()(const IterT& iter) { getValue(iter, stats); } + + // Accumulate another functor's Stats object into this functor's. + inline void join(StatsOp& other) { stats.add(other.stats); } + + StatsT stats; + ValueOp getValue; +}; + + +// Helper class to accumulate scalar voxel values or vector voxel magnitudes +// into a math::Histogram object +template +struct HistOp +{ + HistOp(const ValueOp& op, double vmin, double vmax, size_t bins): + hist(vmin, vmax, bins), getValue(op) + {} + + // Accumulate voxel and tile values into this functor's Histogram object. + inline void operator()(const IterT& iter) { getValue(iter, hist); } + + // Accumulate another functor's Histogram object into this functor's. + inline void join(HistOp& other) { hist.add(other.hist); } + + math::Histogram hist; + ValueOp getValue; +}; + + +// Helper class to apply an operator such as math::Gradient or math::Laplacian +// to voxels and accumulate the scalar results or the magnitudes of vector results +// into a math::Stats object +template +struct MathOp +{ + using TreeT = typename IterT::TreeT; + using ValueT = typename TreeT::ValueType; + using ConstAccessor = typename tree::ValueAccessor; + + // Each thread gets its own accessor and its own copy of the operator. + ConstAccessor mAcc; + OpT mOp; + StatsT mStats; + + template + static inline TreeT* THROW_IF_NULL(TreeT* ptr) { + if (ptr == nullptr) OPENVDB_THROW(ValueError, "iterator references a null tree"); + return ptr; + } + + MathOp(const IterT& iter, const OpT& op): + mAcc(*THROW_IF_NULL(iter.getTree())), mOp(op) + {} + + // Accumulate voxel and tile values into this functor's Stats object. + void operator()(const IterT& it) + { + if (it.isVoxelValue()) { + // Add the magnitude of the gradient at a single voxel. + mStats.add(mOp.result(mAcc, it.getCoord())); + } else { + // Iterate over the voxels enclosed by a tile and add the results + // of applying the operator at each voxel. + /// @todo This could be specialized to be done more efficiently for some operators. + /// For example, all voxels in the interior of a tile (i.e., not on the borders) + /// have gradient zero, so there's no need to apply the operator to every voxel. + CoordBBox bbox = it.getBoundingBox(); + Coord xyz; + int &x = xyz.x(), &y = xyz.y(), &z = xyz.z(); + for (x = bbox.min().x(); x <= bbox.max().x(); ++x) { + for (y = bbox.min().y(); y <= bbox.max().y(); ++y) { + for (z = bbox.min().z(); z <= bbox.max().z(); ++z) { + mStats.add(mOp.result(mAcc, it.getCoord())); + } + } + } + } + } + + // Accumulate another functor's Stats object into this functor's. + inline void join(MathOp& other) { mStats.add(other.mStats); } +}; // struct MathOp + +} // namespace stats_internal + + +template +inline math::Histogram +histogram(const IterT& iter, double vmin, double vmax, size_t numBins, bool threaded) +{ + using ValueOp = stats_internal::GetVal; + ValueOp valOp; + stats_internal::HistOp op(valOp, vmin, vmax, numBins); + tools::accumulate(iter, op, threaded); + return op.hist; +} + +template +inline math::Extrema +extrema(const IterT& iter, bool threaded) +{ + stats_internal::GetVal valOp; + return extrema(iter, valOp, threaded); +} + +template +inline math::Stats +statistics(const IterT& iter, bool threaded) +{ + stats_internal::GetVal valOp; + return statistics(iter, valOp, threaded); +} + +template +inline math::Extrema +extrema(const IterT& iter, const ValueOp& valOp, bool threaded) +{ + stats_internal::StatsOp op(valOp); + tools::accumulate(iter, op, threaded); + return op.stats; +} + +template +inline math::Stats +statistics(const IterT& iter, const ValueOp& valOp, bool threaded) +{ + stats_internal::StatsOp op(valOp); + tools::accumulate(iter, op, threaded); + return op.stats; +} + + +template +inline math::Extrema +opExtrema(const IterT& iter, const OperatorT& op, bool threaded) +{ + stats_internal::MathOp func(iter, op); + tools::accumulate(iter, func, threaded); + return func.mStats; +} + +template +inline math::Stats +opStatistics(const IterT& iter, const OperatorT& op, bool threaded) +{ + stats_internal::MathOp func(iter, op); + tools::accumulate(iter, func, threaded); + return func.mStats; +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_STATISTICS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/TopologyToLevelSet.h b/openvdb/tools/TopologyToLevelSet.h new file mode 100644 index 00000000..2703cb77 --- /dev/null +++ b/openvdb/tools/TopologyToLevelSet.h @@ -0,0 +1,258 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file TopologyToLevelSet.h +/// +/// @brief This tool generates a narrow-band signed distance field / level set +/// from the interface between active and inactive voxels in a vdb grid. +/// +/// @par Example: +/// Combine with @c tools::PointsToVolume for fast point cloud to level set conversion. + +#ifndef OPENVDB_TOOLS_TOPOLOGY_TO_LEVELSET_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_TOPOLOGY_TO_LEVELSET_HAS_BEEN_INCLUDED + +#include "LevelSetFilter.h" +#include "Morphology.h" // for erodeVoxels and dilateActiveValues +#include "SignedFloodFill.h" + +#include +#include +#include // for math::BiasedGradientScheme +#include +#include +#include // for std::min(), std::max() +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +/// @brief Compute the narrow-band signed distance to the interface between +/// active and inactive voxels in the input grid. +/// +/// @return A shared pointer to a new sdf / level set grid of type @c float +/// +/// @param grid Input grid of arbitrary type whose active voxels are used +/// in constructing the level set. +/// @param halfWidth Half the width of the narrow band in voxel units. +/// @param closingSteps Number of morphological closing steps used to fill gaps +/// in the active voxel region. +/// @param dilation Number of voxels to expand the active voxel region. +/// @param smoothingSteps Number of smoothing interations. +template +inline typename GridT::template ValueConverter::Type::Ptr +topologyToLevelSet(const GridT& grid, int halfWidth = 3, int closingSteps = 1, int dilation = 0, + int smoothingSteps = 0); + + +/// @brief Compute the narrow-band signed distance to the interface between +/// active and inactive voxels in the input grid. +/// +/// @return A shared pointer to a new sdf / level set grid of type @c float +/// +/// @param grid Input grid of arbitrary type whose active voxels are used +/// in constructing the level set. +/// @param halfWidth Half the width of the narrow band in voxel units. +/// @param closingSteps Number of morphological closing steps used to fill gaps +/// in the active voxel region. +/// @param dilation Number of voxels to expand the active voxel region. +/// @param smoothingSteps Number of smoothing interations. +/// @param interrupt Optional object adhering to the util::NullInterrupter interface. +template +inline typename GridT::template ValueConverter::Type::Ptr +topologyToLevelSet(const GridT& grid, int halfWidth = 3, int closingSteps = 1, int dilation = 0, + int smoothingSteps = 0, InterrupterT* interrupt = nullptr); + + +//////////////////////////////////////// + + +namespace ttls_internal { + + +template +struct DilateOp +{ + DilateOp(TreeT& t, int n) : tree(&t), size(n) {} + void operator()() const { + dilateActiveValues( *tree, size, tools::NN_FACE, tools::IGNORE_TILES); + } + TreeT* tree; + const int size; +}; + + +template +struct ErodeOp +{ + ErodeOp(TreeT& t, int n) : tree(&t), size(n) {} + void operator()() const { erodeVoxels( *tree, size); } + TreeT* tree; + const int size; +}; + + +template +struct OffsetAndMinComp +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using ValueType = typename TreeType::ValueType; + + OffsetAndMinComp(std::vector& lhsNodes, + const TreeType& rhsTree, ValueType offset) + : mLhsNodes(lhsNodes.empty() ? nullptr : &lhsNodes[0]), mRhsTree(&rhsTree), mOffset(offset) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using Iterator = typename LeafNodeType::ValueOnIter; + + tree::ValueAccessor rhsAcc(*mRhsTree); + const ValueType offset = mOffset; + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + LeafNodeType& lhsNode = *mLhsNodes[n]; + const LeafNodeType * rhsNodePt = rhsAcc.probeConstLeaf(lhsNode.origin()); + if (!rhsNodePt) continue; + + for (Iterator it = lhsNode.beginValueOn(); it; ++it) { + ValueType& val = const_cast(it.getValue()); + val = std::min(val, offset + rhsNodePt->getValue(it.pos())); + } + } + } + +private: + LeafNodeType * * const mLhsNodes; + TreeType const * const mRhsTree; + ValueType const mOffset; +}; // struct OffsetAndMinComp + + +template +inline void +normalizeLevelSet(GridType& grid, const int halfWidthInVoxels, InterrupterType* interrupt = nullptr) +{ + LevelSetFilter filter(grid, interrupt); + filter.setSpatialScheme(math::FIRST_BIAS); + filter.setNormCount(halfWidthInVoxels); + filter.normalize(); + filter.prune(); +} + + +template +inline void +smoothLevelSet(GridType& grid, int iterations, int halfBandWidthInVoxels, + InterrupterType* interrupt = nullptr) +{ + using ValueType = typename GridType::ValueType; + using TreeType = typename GridType::TreeType; + using LeafNodeType = typename TreeType::LeafNodeType; + + GridType filterGrid(grid); + + LevelSetFilter filter(filterGrid, interrupt); + filter.setSpatialScheme(math::FIRST_BIAS); + + for (int n = 0; n < iterations; ++n) { + if (interrupt && interrupt->wasInterrupted()) break; + filter.mean(1); + } + + std::vector nodes; + grid.tree().getNodes(nodes); + + const ValueType offset = ValueType(double(0.5) * grid.transform().voxelSize()[0]); + + tbb::parallel_for(tbb::blocked_range(0, nodes.size()), + OffsetAndMinComp(nodes, filterGrid.tree(), -offset)); + + // Clean up any damanage that was done by the min operation + normalizeLevelSet(grid, halfBandWidthInVoxels, interrupt); +} + + +} // namespace ttls_internal + + + +template +inline typename GridT::template ValueConverter::Type::Ptr +topologyToLevelSet(const GridT& grid, int halfWidth, int closingSteps, int dilation, + int smoothingSteps, InterrupterT* interrupt) +{ + using MaskTreeT = typename GridT::TreeType::template ValueConverter::Type; + using FloatTreeT = typename GridT::TreeType::template ValueConverter::Type; + using FloatGridT = Grid; + + // Check inputs + + halfWidth = std::max(halfWidth, 1); + closingSteps = std::max(closingSteps, 0); + dilation = std::max(dilation, 0); + + if (!grid.hasUniformVoxels()) { + OPENVDB_THROW(ValueError, "Non-uniform voxels are not supported!"); + } + + // Copy the topology into a MaskGrid. + MaskTreeT maskTree( grid.tree(), false/*background*/, openvdb::TopologyCopy() ); + + // Morphological closing operation. + dilateActiveValues( maskTree, closingSteps + dilation, tools::NN_FACE, tools::IGNORE_TILES ); + erodeVoxels( maskTree, closingSteps ); + + // Generate a volume with an implicit zero crossing at the boundary + // between active and inactive values in the input grid. + const float background = float(grid.voxelSize()[0]) * float(halfWidth); + typename FloatTreeT::Ptr lsTree( + new FloatTreeT( maskTree, /*out=*/background, /*in=*/-background, openvdb::TopologyCopy() ) ); + + tbb::task_group pool; + pool.run( ttls_internal::ErodeOp< MaskTreeT >( maskTree, halfWidth ) ); + pool.run( ttls_internal::DilateOp( *lsTree , halfWidth ) ); + pool.wait();// wait for both tasks to complete + + lsTree->topologyDifference( maskTree ); + tools::pruneLevelSet( *lsTree, /*threading=*/true); + + // Create a level set grid from the tree + typename FloatGridT::Ptr lsGrid = FloatGridT::create( lsTree ); + lsGrid->setTransform( grid.transform().copy() ); + lsGrid->setGridClass( openvdb::GRID_LEVEL_SET ); + + // Use a PDE based scheme to propagate distance values from the + // implicit zero crossing. + ttls_internal::normalizeLevelSet(*lsGrid, 3*halfWidth, interrupt); + + // Additional filtering + if (smoothingSteps > 0) { + ttls_internal::smoothLevelSet(*lsGrid, smoothingSteps, halfWidth, interrupt); + } + + return lsGrid; +} + + +template +inline typename GridT::template ValueConverter::Type::Ptr +topologyToLevelSet(const GridT& grid, int halfWidth, int closingSteps, int dilation, int smoothingSteps) +{ + util::NullInterrupter interrupt; + return topologyToLevelSet(grid, halfWidth, closingSteps, dilation, smoothingSteps, &interrupt); +} + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_TOPOLOGY_TO_LEVELSET_HAS_BEEN_INCLUDED + diff --git a/openvdb/tools/ValueTransformer.h b/openvdb/tools/ValueTransformer.h new file mode 100644 index 00000000..bea0dfea --- /dev/null +++ b/openvdb/tools/ValueTransformer.h @@ -0,0 +1,685 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file ValueTransformer.h +/// +/// @author Peter Cucka +/// +/// tools::foreach() and tools::transformValues() transform the values in a grid +/// by iterating over the grid with a user-supplied iterator and applying a +/// user-supplied functor at each step of the iteration. With tools::foreach(), +/// the transformation is done in-place on the input grid, whereas with +/// tools::transformValues(), transformed values are written to an output grid +/// (which can, for example, have a different value type than the input grid). +/// Both functions can optionally transform multiple values of the grid in parallel. +/// +/// tools::accumulate() can be used to accumulate the results of applying a functor +/// at each step of a grid iteration. (The functor is responsible for storing and +/// updating intermediate results.) When the iteration is done serially the behavior is +/// the same as with tools::foreach(), but when multiple values are processed in parallel, +/// an additional step is performed: when any two threads finish processing, +/// @c op.join(otherOp) is called on one thread's functor to allow it to coalesce +/// its intermediate result with the other thread's. +/// +/// Finally, tools::setValueOnMin(), tools::setValueOnMax(), tools::setValueOnSum() +/// and tools::setValueOnMult() are wrappers around Tree::modifyValue() (or +/// ValueAccessor::modifyValue()) for some commmon in-place operations. +/// These are typically significantly faster than calling getValue() followed by setValue(). + +#ifndef OPENVDB_TOOLS_VALUETRANSFORMER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VALUETRANSFORMER_HAS_BEEN_INCLUDED + +#include // for std::min(), std::max() +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// Iterate over a grid and at each step call @c op(iter). +/// @param iter an iterator over a grid or its tree (@c Grid::ValueOnCIter, +/// @c Tree::NodeIter, etc.) +/// @param op a functor of the form void op(const IterT&), where @c IterT is +/// the type of @a iter +/// @param threaded if true, transform multiple values of the grid in parallel +/// @param shareOp if true and @a threaded is true, all threads use the same functor; +/// otherwise, each thread gets its own copy of the @e original functor +/// +/// @par Example: +/// Multiply all values (both set and unset) of a scalar, floating-point grid by two. +/// @code +/// struct Local { +/// static inline void op(const FloatGrid::ValueAllIter& iter) { +/// iter.setValue(*iter * 2); +/// } +/// }; +/// FloatGrid grid = ...; +/// tools::foreach(grid.beginValueAll(), Local::op); +/// @endcode +/// +/// @par Example: +/// Rotate all active vectors of a vector grid by 45 degrees about the y axis. +/// @code +/// namespace { +/// struct MatMul { +/// math::Mat3s M; +/// MatMul(const math::Mat3s& mat): M(mat) {} +/// inline void operator()(const VectorGrid::ValueOnIter& iter) const { +/// iter.setValue(M.transform(*iter)); +/// } +/// }; +/// } +/// { +/// VectorGrid grid = ...; +/// tools::foreach(grid.beginValueOn(), +/// MatMul(math::rotation(math::Y, M_PI_4))); +/// } +/// @endcode +/// +/// @note For more complex operations that require finer control over threading, +/// consider using @c tbb::parallel_for() or @c tbb::parallel_reduce() in conjunction +/// with a tree::IteratorRange that wraps a grid or tree iterator. +template +inline void foreach(const IterT& iter, XformOp& op, + bool threaded = true, bool shareOp = true); + +template +inline void foreach(const IterT& iter, const XformOp& op, + bool threaded = true, bool shareOp = true); + + +/// Iterate over a grid and at each step call op(iter, accessor) to +/// populate (via the accessor) the given output grid, whose @c ValueType +/// need not be the same as the input grid's. +/// @param inIter a non-const or (preferably) @c const iterator over an +/// input grid or its tree (@c Grid::ValueOnCIter, @c Tree::NodeIter, etc.) +/// @param outGrid an empty grid to be populated +/// @param op a functor of the form +/// void op(const InIterT&, OutGridT::ValueAccessor&), +/// where @c InIterT is the type of @a inIter +/// @param threaded if true, transform multiple values of the input grid in parallel +/// @param shareOp if true and @a threaded is true, all threads use the same functor; +/// otherwise, each thread gets its own copy of the @e original functor +/// @param merge how to merge intermediate results from multiple threads (see Types.h) +/// +/// @par Example: +/// Populate a scalar floating-point grid with the lengths of the vectors from all +/// active voxels of a vector-valued input grid. +/// @code +/// struct Local { +/// static void op( +/// const Vec3fGrid::ValueOnCIter& iter, +/// FloatGrid::ValueAccessor& accessor) +/// { +/// if (iter.isVoxelValue()) { // set a single voxel +/// accessor.setValue(iter.getCoord(), iter->length()); +/// } else { // fill an entire tile +/// CoordBBox bbox; +/// iter.getBoundingBox(bbox); +/// accessor.getTree()->fill(bbox, iter->length()); +/// } +/// } +/// }; +/// Vec3fGrid inGrid = ...; +/// FloatGrid outGrid; +/// tools::transformValues(inGrid.cbeginValueOn(), outGrid, Local::op); +/// @endcode +/// +/// @note For more complex operations that require finer control over threading, +/// consider using @c tbb::parallel_for() or @c tbb::parallel_reduce() in conjunction +/// with a tree::IteratorRange that wraps a grid or tree iterator. +template +inline void transformValues(const InIterT& inIter, OutGridT& outGrid, + XformOp& op, bool threaded = true, bool shareOp = true, + MergePolicy merge = MERGE_ACTIVE_STATES); + +#ifndef _MSC_VER +template +inline void transformValues(const InIterT& inIter, OutGridT& outGrid, + const XformOp& op, bool threaded = true, bool shareOp = true, + MergePolicy merge = MERGE_ACTIVE_STATES); +#endif + + +/// Iterate over a grid and at each step call @c op(iter). If threading is enabled, +/// call @c op.join(otherOp) to accumulate intermediate results from pairs of threads. +/// @param iter an iterator over a grid or its tree (@c Grid::ValueOnCIter, +/// @c Tree::NodeIter, etc.) +/// @param op a functor with a join method of the form void join(XformOp&) +/// and a call method of the form void op(const IterT&), +/// where @c IterT is the type of @a iter +/// @param threaded if true, transform multiple values of the grid in parallel +/// @note If @a threaded is true, each thread gets its own copy of the @e original functor. +/// The order in which threads are joined is unspecified. +/// @note If @a threaded is false, the join method is never called. +/// +/// @par Example: +/// Compute the average of the active values of a scalar, floating-point grid +/// using the math::Stats class. +/// @code +/// namespace { +/// struct Average { +/// math::Stats stats; +/// +/// // Accumulate voxel and tile values into this functor's Stats object. +/// inline void operator()(const FloatGrid::ValueOnCIter& iter) { +/// if (iter.isVoxelValue()) stats.add(*iter); +/// else stats.add(*iter, iter.getVoxelCount()); +/// } +/// +/// // Accumulate another functor's Stats object into this functor's. +/// inline void join(Average& other) { stats.add(other.stats); } +/// +/// // Return the cumulative result. +/// inline double average() const { return stats.mean(); } +/// }; +/// } +/// { +/// FloatGrid grid = ...; +/// Average op; +/// tools::accumulate(grid.cbeginValueOn(), op); +/// double average = op.average(); +/// } +/// @endcode +/// +/// @note For more complex operations that require finer control over threading, +/// consider using @c tbb::parallel_for() or @c tbb::parallel_reduce() in conjunction +/// with a tree::IteratorRange that wraps a grid or tree iterator. +template +inline void accumulate(const IterT& iter, XformOp& op, bool threaded = true); + + +/// @brief Set the value of the voxel at the given coordinates in @a tree to +/// the minimum of its current value and @a value, and mark the voxel as active. +/// @details This is typically significantly faster than calling getValue() +/// followed by setValueOn(). +/// @note @a TreeT can be either a Tree or a ValueAccessor. +template +inline void setValueOnMin(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value); + +/// @brief Set the value of the voxel at the given coordinates in @a tree to +/// the maximum of its current value and @a value, and mark the voxel as active. +/// @details This is typically significantly faster than calling getValue() +/// followed by setValueOn(). +/// @note @a TreeT can be either a Tree or a ValueAccessor. +template +inline void setValueOnMax(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value); + +/// @brief Set the value of the voxel at the given coordinates in @a tree to +/// the sum of its current value and @a value, and mark the voxel as active. +/// @details This is typically significantly faster than calling getValue() +/// followed by setValueOn(). +/// @note @a TreeT can be either a Tree or a ValueAccessor. +template +inline void setValueOnSum(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value); + +/// @brief Set the value of the voxel at the given coordinates in @a tree to +/// the product of its current value and @a value, and mark the voxel as active. +/// @details This is typically significantly faster than calling getValue() +/// followed by setValueOn(). +/// @note @a TreeT can be either a Tree or a ValueAccessor. +template +inline void setValueOnMult(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value); + + +//////////////////////////////////////// + + +namespace valxform { + +template +struct MinOp { + const ValueType val; + MinOp(const ValueType& v): val(v) {} + inline void operator()(ValueType& v) const { v = std::min(v, val); } +}; + +template +struct MaxOp { + const ValueType val; + MaxOp(const ValueType& v): val(v) {} + inline void operator()(ValueType& v) const { v = std::max(v, val); } +}; + +template +struct SumOp { + const ValueType val; + SumOp(const ValueType& v): val(v) {} + inline void operator()(ValueType& v) const { v += val; } +}; + + +template<> +struct SumOp { + using ValueType = bool; + const ValueType val; + SumOp(const ValueType& v): val(v) {} + inline void operator()(ValueType& v) const { v = v || val; } +}; + +template +struct MultOp { + const ValueType val; + MultOp(const ValueType& v): val(v) {} + inline void operator()(ValueType& v) const { v *= val; } +}; + +} + + +template +inline void +setValueOnMin(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value) +{ + tree.modifyValue(xyz, valxform::MinOp(value)); +} + + +template +inline void +setValueOnMax(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value) +{ + tree.modifyValue(xyz, valxform::MaxOp(value)); +} + + +template +inline void +setValueOnSum(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value) +{ + tree.modifyValue(xyz, valxform::SumOp(value)); +} + + +template +inline void +setValueOnMult(TreeT& tree, const Coord& xyz, const typename TreeT::ValueType& value) +{ + tree.modifyValue(xyz, valxform::MultOp(value)); +} + + +//////////////////////////////////////// + + +namespace valxform { + +template +class SharedOpApplier +{ +public: + using IterRange = typename tree::IteratorRange; + + SharedOpApplier(const IterT& iter, OpT& op): mIter(iter), mOp(op) {} + + void process(bool threaded = true) + { + IterRange range(mIter); + if (threaded) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + + void operator()(IterRange& r) const { for ( ; r; ++r) mOp(r.iterator()); } + +private: + IterT mIter; + OpT& mOp; +}; + + +template +class CopyableOpApplier +{ +public: + using IterRange = typename tree::IteratorRange; + + CopyableOpApplier(const IterT& iter, const OpT& op): mIter(iter), mOp(op), mOrigOp(&op) {} + + // When splitting this task, give the subtask a copy of the original functor, + // not of this task's functor, which might have been modified arbitrarily. + CopyableOpApplier(const CopyableOpApplier& other): + mIter(other.mIter), mOp(*other.mOrigOp), mOrigOp(other.mOrigOp) {} + + void process(bool threaded = true) + { + IterRange range(mIter); + if (threaded) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + + void operator()(IterRange& r) const { for ( ; r; ++r) mOp(r.iterator()); } + +private: + IterT mIter; + OpT mOp; // copy of original functor + OpT const * const mOrigOp; // pointer to original functor +}; + +} // namespace valxform + + +template +inline void +foreach(const IterT& iter, XformOp& op, bool threaded, bool shared) +{ + if (shared) { + typename valxform::SharedOpApplier proc(iter, op); + proc.process(threaded); + } else { + using Processor = typename valxform::CopyableOpApplier; + Processor proc(iter, op); + proc.process(threaded); + } +} + +template +inline void +foreach(const IterT& iter, const XformOp& op, bool threaded, bool /*shared*/) +{ + // Const ops are shared across threads, not copied. + typename valxform::SharedOpApplier proc(iter, op); + proc.process(threaded); +} + + +//////////////////////////////////////// + + +namespace valxform { + +template +class SharedOpTransformer +{ +public: + using InTreeT = typename InIterT::TreeT; + using IterRange = typename tree::IteratorRange; + using OutValueT = typename OutTreeT::ValueType; + + SharedOpTransformer(const InIterT& inIter, OutTreeT& outTree, OpT& op, MergePolicy merge): + mIsRoot(true), + mInputIter(inIter), + mInputTree(inIter.getTree()), + mOutputTree(&outTree), + mOp(op), + mMergePolicy(merge) + { + if (static_cast(mInputTree) == static_cast(mOutputTree)) { + OPENVDB_LOG_INFO("use tools::foreach(), not transformValues()," + " to transform a grid in place"); + } + } + + /// Splitting constructor + SharedOpTransformer(SharedOpTransformer& other, tbb::split): + mIsRoot(false), + mInputIter(other.mInputIter), + mInputTree(other.mInputTree), + mOutputTree(new OutTreeT(zeroVal())), + mOp(other.mOp), + mMergePolicy(other.mMergePolicy) + {} + + ~SharedOpTransformer() + { + // Delete the output tree only if it was allocated locally + // (the top-level output tree was supplied by the caller). + if (!mIsRoot) { + delete mOutputTree; + mOutputTree = nullptr; + } + } + + void process(bool threaded = true) + { + if (!mInputTree || !mOutputTree) return; + + IterRange range(mInputIter); + + // Independently transform elements in the iterator range, + // either in parallel or serially. + if (threaded) { + tbb::parallel_reduce(range, *this); + } else { + (*this)(range); + } + } + + /// Transform each element in the given range. + void operator()(IterRange& range) const + { + if (!mOutputTree) return; + typename tree::ValueAccessor outAccessor(*mOutputTree); + for ( ; range; ++range) { + mOp(range.iterator(), outAccessor); + } + } + + void join(const SharedOpTransformer& other) + { + if (mOutputTree && other.mOutputTree) { + mOutputTree->merge(*other.mOutputTree, mMergePolicy); + } + } + +private: + bool mIsRoot; + InIterT mInputIter; + const InTreeT* mInputTree; + OutTreeT* mOutputTree; + OpT& mOp; + MergePolicy mMergePolicy; +}; // class SharedOpTransformer + + +template +class CopyableOpTransformer +{ +public: + using InTreeT = typename InIterT::TreeT; + using IterRange = typename tree::IteratorRange; + using OutValueT = typename OutTreeT::ValueType; + + CopyableOpTransformer(const InIterT& inIter, OutTreeT& outTree, + const OpT& op, MergePolicy merge): + mIsRoot(true), + mInputIter(inIter), + mInputTree(inIter.getTree()), + mOutputTree(&outTree), + mOp(op), + mOrigOp(&op), + mMergePolicy(merge) + { + if (static_cast(mInputTree) == static_cast(mOutputTree)) { + OPENVDB_LOG_INFO("use tools::foreach(), not transformValues()," + " to transform a grid in place"); + } + } + + // When splitting this task, give the subtask a copy of the original functor, + // not of this task's functor, which might have been modified arbitrarily. + CopyableOpTransformer(CopyableOpTransformer& other, tbb::split): + mIsRoot(false), + mInputIter(other.mInputIter), + mInputTree(other.mInputTree), + mOutputTree(new OutTreeT(zeroVal())), + mOp(*other.mOrigOp), + mOrigOp(other.mOrigOp), + mMergePolicy(other.mMergePolicy) + {} + + ~CopyableOpTransformer() + { + // Delete the output tree only if it was allocated locally + // (the top-level output tree was supplied by the caller). + if (!mIsRoot) { + delete mOutputTree; + mOutputTree = nullptr; + } + } + + void process(bool threaded = true) + { + if (!mInputTree || !mOutputTree) return; + + IterRange range(mInputIter); + + // Independently transform elements in the iterator range, + // either in parallel or serially. + if (threaded) { + tbb::parallel_reduce(range, *this); + } else { + (*this)(range); + } + } + + /// Transform each element in the given range. + void operator()(IterRange& range) + { + if (!mOutputTree) return; + typename tree::ValueAccessor outAccessor(*mOutputTree); + for ( ; range; ++range) { + mOp(range.iterator(), outAccessor); + } + } + + void join(const CopyableOpTransformer& other) + { + if (mOutputTree && other.mOutputTree) { + mOutputTree->merge(*other.mOutputTree, mMergePolicy); + } + } + +private: + bool mIsRoot; + InIterT mInputIter; + const InTreeT* mInputTree; + OutTreeT* mOutputTree; + OpT mOp; // copy of original functor + OpT const * const mOrigOp; // pointer to original functor + MergePolicy mMergePolicy; +}; // class CopyableOpTransformer + +} // namespace valxform + + +//////////////////////////////////////// + + +template +inline void +transformValues(const InIterT& inIter, OutGridT& outGrid, XformOp& op, + bool threaded, bool shared, MergePolicy merge) +{ + using Adapter = TreeAdapter; + using OutTreeT = typename Adapter::TreeType; + if (shared) { + using Processor = typename valxform::SharedOpTransformer; + Processor proc(inIter, Adapter::tree(outGrid), op, merge); + proc.process(threaded); + } else { + using Processor = typename valxform::CopyableOpTransformer; + Processor proc(inIter, Adapter::tree(outGrid), op, merge); + proc.process(threaded); + } +} + +#ifndef _MSC_VER +template +inline void +transformValues(const InIterT& inIter, OutGridT& outGrid, const XformOp& op, + bool threaded, bool /*share*/, MergePolicy merge) +{ + using Adapter = TreeAdapter; + using OutTreeT = typename Adapter::TreeType; + // Const ops are shared across threads, not copied. + using Processor = typename valxform::SharedOpTransformer; + Processor proc(inIter, Adapter::tree(outGrid), op, merge); + proc.process(threaded); +} +#endif + + +//////////////////////////////////////// + + +namespace valxform { + +template +class OpAccumulator +{ +public: + using IterRange = typename tree::IteratorRange; + + // The root task makes a const copy of the original functor (mOrigOp) + // and keeps a pointer to the original functor (mOp), which it then modifies. + // Each subtask keeps a const pointer to the root task's mOrigOp + // and makes and then modifies a non-const copy (mOp) of it. + OpAccumulator(const IterT& iter, OpT& op): + mIsRoot(true), + mIter(iter), + mOp(&op), + mOrigOp(new OpT(op)) + {} + + // When splitting this task, give the subtask a copy of the original functor, + // not of this task's functor, which might have been modified arbitrarily. + OpAccumulator(OpAccumulator& other, tbb::split): + mIsRoot(false), + mIter(other.mIter), + mOp(new OpT(*other.mOrigOp)), + mOrigOp(other.mOrigOp) + {} + + ~OpAccumulator() { if (mIsRoot) delete mOrigOp; else delete mOp; } + + void process(bool threaded = true) + { + IterRange range(mIter); + if (threaded) { + tbb::parallel_reduce(range, *this); + } else { + (*this)(range); + } + } + + void operator()(IterRange& r) { for ( ; r; ++r) (*mOp)(r.iterator()); } + + void join(OpAccumulator& other) { mOp->join(*other.mOp); } + +private: + const bool mIsRoot; + const IterT mIter; + OpT* mOp; // pointer to original functor, which might get modified + OpT const * const mOrigOp; // const copy of original functor +}; // class OpAccumulator + +} // namespace valxform + + +//////////////////////////////////////// + + +template +inline void +accumulate(const IterT& iter, XformOp& op, bool threaded) +{ + typename valxform::OpAccumulator proc(iter, op); + proc.process(threaded); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VALUETRANSFORMER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/VectorTransformer.h b/openvdb/tools/VectorTransformer.h new file mode 100644 index 00000000..09c56365 --- /dev/null +++ b/openvdb/tools/VectorTransformer.h @@ -0,0 +1,134 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file VectorTransformer.h + +#ifndef OPENVDB_TOOLS_VECTORTRANSFORMER_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VECTORTRANSFORMER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include "ValueTransformer.h" // for tools::foreach() +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Apply an affine transform to the voxel values of a vector-valued grid +/// in accordance with the grid's vector type (covariant, contravariant, etc.). +/// @throw TypeError if the grid is not vector-valued +template +inline void +transformVectors(GridType&, const Mat4d&); + + +//////////////////////////////////////// + + +// Functors for use with tools::foreach() to transform vector voxel values + +struct HomogeneousMatMul +{ + const Mat4d mat; + HomogeneousMatMul(const Mat4d& _mat): mat(_mat) {} + template void operator()(const TreeIterT& it) const + { + Vec3d v(*it); + it.setValue(mat.transformH(v)); + } +}; + +struct MatMul +{ + const Mat4d mat; + MatMul(const Mat4d& _mat): mat(_mat) {} + template + void operator()(const TreeIterT& it) const + { + Vec3d v(*it); + it.setValue(mat.transform3x3(v)); + } +}; + +struct MatMulNormalize +{ + const Mat4d mat; + MatMulNormalize(const Mat4d& _mat): mat(_mat) {} + template + void operator()(const TreeIterT& it) const + { + Vec3d v(*it); + v = mat.transform3x3(v); + v.normalize(); + it.setValue(v); + } +}; + + +//{ +/// @cond OPENVDB_VECTOR_TRANSFORMER_INTERNAL + +/// @internal This overload is enabled only for scalar-valued grids. +template inline +typename std::enable_if::IsVec, void>::type +doTransformVectors(GridType&, const Mat4d&) +{ + OPENVDB_THROW(TypeError, "tools::transformVectors() requires a vector-valued grid"); +} + +/// @internal This overload is enabled only for vector-valued grids. +template inline +typename std::enable_if::IsVec, void>::type +doTransformVectors(GridType& grid, const Mat4d& mat) +{ + if (!grid.isInWorldSpace()) return; + + const VecType vecType = grid.getVectorType(); + switch (vecType) { + case VEC_COVARIANT: + case VEC_COVARIANT_NORMALIZE: + { + Mat4d invmat = mat.inverse(); + invmat = invmat.transpose(); + + if (vecType == VEC_COVARIANT_NORMALIZE) { + foreach(grid.beginValueAll(), MatMulNormalize(invmat)); + } else { + foreach(grid.beginValueAll(), MatMul(invmat)); + } + break; + } + + case VEC_CONTRAVARIANT_RELATIVE: + foreach(grid.beginValueAll(), MatMul(mat)); + break; + + case VEC_CONTRAVARIANT_ABSOLUTE: + foreach(grid.beginValueAll(), HomogeneousMatMul(mat)); + break; + + case VEC_INVARIANT: + break; + } +} + +/// @endcond +//} + + +template +inline void +transformVectors(GridType& grid, const Mat4d& mat) +{ + doTransformVectors(grid, mat); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VECTORTRANSFORMER_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/VelocityFields.h b/openvdb/tools/VelocityFields.h new file mode 100644 index 00000000..8261307c --- /dev/null +++ b/openvdb/tools/VelocityFields.h @@ -0,0 +1,275 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/////////////////////////////////////////////////////////////////////////// +// +/// @author Ken Museth +/// +/// @file VelocityFields.h +/// +/// @brief Defines two simple wrapper classes for advection velocity +/// fields as well as VelocitySampler and VelocityIntegrator +/// +/// +/// @details DiscreteField wraps a velocity grid and EnrightField is mostly +/// intended for debugging (it's an analytical divergence free and +/// periodic field). They both share the same API required by the +/// LevelSetAdvection class defined in LevelSetAdvect.h. Thus, any +/// class with this API should work with LevelSetAdvection. +/// +/// @warning Note the Field wrapper classes below always assume the velocity +/// is represented in the world-frame of reference. For DiscreteField +/// this implies the input grid must contain velocities in world +/// coordinates. + +#ifndef OPENVDB_TOOLS_VELOCITY_FIELDS_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VELOCITY_FIELDS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include "Interpolation.h" // for Sampler, etc. +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Thin wrapper class for a velocity grid +/// @note Consider replacing BoxSampler with StaggeredBoxSampler +template +class DiscreteField +{ +public: + typedef typename VelGridT::ValueType VectorType; + typedef typename VectorType::ValueType ValueType; + BOOST_STATIC_ASSERT(boost::is_floating_point::value); + + DiscreteField(const VelGridT &vel) + : mAccessor(vel.tree()) + , mTransform(&vel.transform()) + { + } + + /// @brief Copy constructor + DiscreteField(const DiscreteField& other) + : mAccessor(other.mAccessor.tree()) + , mTransform(other.mTransform) + { + } + + /// @return const reference to the transform between world and index space + /// @note Use this method to determine if a client grid is + /// aligned with the coordinate space of the velocity grid. + const math::Transform& transform() const { return *mTransform; } + + /// @return the interpolated velocity at the world space position xyz + /// + /// @warning Not threadsafe since it uses a ValueAccessor! So use + /// one instance per thread (which is fine since its lightweight). + inline VectorType operator() (const Vec3d& xyz, ValueType/*dummy time*/) const + { + return Interpolator::sample(mAccessor, mTransform->worldToIndex(xyz)); + } + + /// @return the velocity at the coordinate space position ijk + /// + /// @warning Not threadsafe since it uses a ValueAccessor! So use + /// one instance per thread (which is fine since its lightweight). + inline VectorType operator() (const Coord& ijk, ValueType/*dummy time*/) const + { + return mAccessor.getValue(ijk); + } + +private: + const typename VelGridT::ConstAccessor mAccessor;//Not thread-safe + const math::Transform* mTransform; + +}; // end of DiscreteField + +/////////////////////////////////////////////////////////////////////// + +/// @brief Analytical, divergence-free and periodic velocity field +/// @note Primarily intended for debugging! +/// @warning This analytical velocity only produce meaningful values +/// in the unit box in world space. In other words make sure any level +/// set surface is fully enclosed in the axis aligned bounding box +/// spanning 0->1 in world units. +template +class EnrightField +{ +public: + typedef ScalarT ValueType; + typedef math::Vec3 VectorType; + BOOST_STATIC_ASSERT(boost::is_floating_point::value); + + EnrightField() {} + + /// @return const reference to the identity transform between world and index space + /// @note Use this method to determine if a client grid is + /// aligned with the coordinate space of this velocity field + math::Transform transform() const { return math::Transform(); } + + /// @return the velocity in world units, evaluated at the world + /// position xyz and at the specified time + inline VectorType operator() (const Vec3d& xyz, ValueType time) const; + + /// @return the velocity at the coordinate space position ijk + inline VectorType operator() (const Coord& ijk, ValueType time) const + { + return (*this)(ijk.asVec3d(), time); + } +}; // end of EnrightField + +template +inline math::Vec3 +EnrightField::operator() (const Vec3d& xyz, ValueType time) const +{ + const ScalarT pi = boost::math::constants::pi(); + const ScalarT phase = pi / ScalarT(3); + const ScalarT Px = pi * ScalarT(xyz[0]), Py = pi * ScalarT(xyz[1]), Pz = pi * ScalarT(xyz[2]); + const ScalarT tr = math::Cos(ScalarT(time) * phase); + const ScalarT a = math::Sin(ScalarT(2)*Py); + const ScalarT b = -math::Sin(ScalarT(2)*Px); + const ScalarT c = math::Sin(ScalarT(2)*Pz); + return math::Vec3( + tr * ( ScalarT(2) * math::Pow2(math::Sin(Px)) * a * c ), + tr * ( b * math::Pow2(math::Sin(Py)) * c ), + tr * ( b * a * math::Pow2(math::Sin(Pz)) )); +} + + +/////////////////////////////////////////////////////////////////////// + +/// Class to hold a Vec3 field interpreted as a velocity field. +/// Primarily exists to provide a method(s) that integrate a passive +/// point forward in the velocity field for a single time-step (dt) +template +class VelocitySampler +{ +public: + typedef typename GridT::ConstAccessor AccessorType; + typedef typename GridT::ValueType ValueType; + + /// @brief Constructor from a grid + VelocitySampler(const GridT& grid): + mGrid(&grid), + mAcc(grid.getAccessor()) + { + } + /// @brief Copy-constructor + VelocitySampler(const VelocitySampler& other): + mGrid(other.mGrid), + mAcc(mGrid->getAccessor()) + { + } + /// @brief Samples the velocity at world position onto result. Supports both + /// staggered (i.e. MAC) and collocated velocity grids. + /// + /// @return @c true if any one of the sampled values is active. + /// + /// @warning Not threadsafe since it uses a ValueAccessor! So use + /// one instance per thread (which is fine since its lightweight). + template + inline bool sample(const LocationType& world, ValueType& result) const + { + const Vec3R xyz = mGrid->worldToIndex(Vec3R(world[0], world[1], world[2])); + bool active = Sampler::sample(mAcc, xyz, result); + return active; + } + + /// @brief Samples the velocity at world position onto result. Supports both + /// staggered (i.e. MAC) and co-located velocity grids. + /// + /// @warning Not threadsafe since it uses a ValueAccessor! So use + /// one instance per thread (which is fine since its lightweight). + template + inline ValueType sample(const LocationType& world) const + { + const Vec3R xyz = mGrid->worldToIndex(Vec3R(world[0], world[1], world[2])); + return Sampler::sample(mAcc, xyz); + } + +private: + // holding the Grids for the transforms + const GridT* mGrid; // Velocity vector field + AccessorType mAcc; +};// end of VelocitySampler class + +/////////////////////////////////////////////////////////////////////// + +/// @brief Performs Runge-Kutta time integration of variable order in +/// a static velocity field. +/// +/// @note Note that the order of the velocity sampling is controlled +/// with the SampleOrder template parameter, which defaults +/// to one, i.e. a tri-linear interpolation kernel. +template +class VelocityIntegrator +{ +public: + typedef typename GridT::ValueType VecType; + typedef typename VecType::ValueType ElementType; + + VelocityIntegrator(const GridT& velGrid): + mVelSampler(velGrid) + { + } + /// @brief Variable order Runge-Kutta time integration for a single time step + /// + /// @param dt Time sub-step for the Runge-Kutte integrator of order OrderRK + /// @param world Location in world space coordinates (both input and output) + template + inline void rungeKutta(const ElementType dt, LocationType& world) const + { + BOOST_STATIC_ASSERT(OrderRK <= 4); + VecType P(static_cast(world[0]), + static_cast(world[1]), + static_cast(world[2])); + // Note the if-branching below is optimized away at compile time + if (OrderRK == 0) { + return;// do nothing + } else if (OrderRK == 1) { + VecType V0; + mVelSampler.sample(P, V0); + P = dt * V0; + } else if (OrderRK == 2) { + VecType V0, V1; + mVelSampler.sample(P, V0); + mVelSampler.sample(P + ElementType(0.5) * dt * V0, V1); + P = dt * V1; + } else if (OrderRK == 3) { + VecType V0, V1, V2; + mVelSampler.sample(P, V0); + mVelSampler.sample(P + ElementType(0.5) * dt * V0, V1); + mVelSampler.sample(P + dt * (ElementType(2.0) * V1 - V0), V2); + P = dt * (V0 + ElementType(4.0) * V1 + V2) * ElementType(1.0 / 6.0); + } else if (OrderRK == 4) { + VecType V0, V1, V2, V3; + mVelSampler.sample(P, V0); + mVelSampler.sample(P + ElementType(0.5) * dt * V0, V1); + mVelSampler.sample(P + ElementType(0.5) * dt * V1, V2); + mVelSampler.sample(P + dt * V2, V3); + P = dt * (V0 + ElementType(2.0) * (V1 + V2) + V3) * ElementType(1.0 / 6.0); + } + typedef typename LocationType::ValueType OutType; + world += LocationType(static_cast(P[0]), + static_cast(P[1]), + static_cast(P[2])); + } +private: + VelocitySampler mVelSampler; +};// end of VelocityIntegrator class + + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VELOCITY_FIELDS_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/VolumeAdvect.h b/openvdb/tools/VolumeAdvect.h new file mode 100644 index 00000000..35b5ed9c --- /dev/null +++ b/openvdb/tools/VolumeAdvect.h @@ -0,0 +1,541 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/////////////////////////////////////////////////////////////////////////// +// +/// @author Ken Museth +/// +/// @file tools/VolumeAdvect.h +/// +/// @brief Sparse hyperbolic advection of volumes, e.g. a density or +/// velocity (vs a level set interface). + +#ifndef OPENVDB_TOOLS_VOLUME_ADVECT_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VOLUME_ADVECT_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include "Interpolation.h"// for Sampler +#include "VelocityFields.h" // for VelocityIntegrator +#include "Morphology.h"//for dilateActiveValues and dilateVoxels +#include "Prune.h"// for prune +#include "Statistics.h" // for extrema +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +namespace Scheme { + /// @brief Numerical advections schemes. + enum SemiLagrangian { SEMI, MID, RK3, RK4, MAC, BFECC }; + /// @brief Flux-limiters employed to stabalize the second-order + /// advection schemes MacCormack and BFECC. + enum Limiter { NO_LIMITER, CLAMP, REVERT }; +} + +/// @brief Performs advections of an arbitrary type of volume in a +/// static velocity field. The advections are performed by means +/// of various derivatives of Semi-Lagrangian integration, i.e. +/// backwards tracking along the hyperbolic characteristics +/// followed by interpolation. +/// +/// @note Optionally a limiter can be combined with the higher-order +/// integration schemes MacCormack and BFECC. There are two +/// types of limiters (CLAMP and REVERT) that supress +/// non-physical oscillations by means of either claminging or +/// reverting to a first-order schemes when the function is not +/// bounded by the cell values used for tri-linear interpolation. +/// +/// @verbatim The supported integrations schemes: +/// +/// ================================================================ +/// | Lable | Accuracy | Integration Scheme | Interpolations | +/// | |Time/Space| | velocity/volume | +/// ================================================================ +/// | SEMI | 1/1 | Semi-Lagrangian | 1/1 | +/// | MID | 2/1 | Mid-Point | 2/1 | +/// | RK3 | 3/1 | 3rd Order Runge-Kutta | 3/1 | +/// | RK4 | 4/1 | 4th Order Runge-Kutta | 4/1 | +/// | MAC | 2/2 | MacCormack | 2/2 | +/// | BFECC | 2/2 | BFECC | 3/2 | +/// ================================================================ +/// @endverbatim + +template +class VolumeAdvection +{ +public: + + /// @brief Constructor + /// + /// @param velGrid Velocity grid responsible for the (passive) advection. + /// @param interrupter Optional interrupter used to prematurely end computations. + /// + /// @note The velocity field is assumed to be constant for the duration of the + /// advection. + VolumeAdvection(const VelocityGridT& velGrid, InterrupterType* interrupter = nullptr) + : mVelGrid(velGrid) + , mInterrupter(interrupter) + , mIntegrator( Scheme::SEMI ) + , mLimiter( Scheme::CLAMP ) + , mGrainSize( 128 ) + , mSubSteps( 1 ) + { + math::Extrema e = extrema(velGrid.cbeginValueAll(), /*threading*/true); + e.add(velGrid.background().length()); + mMaxVelocity = e.max(); + } + + virtual ~VolumeAdvection() + { + } + + /// @brief Return the spatial order of accuracy of the advection scheme + /// + /// @note This is the optimal order in smooth regions. In + /// non-smooth regions the flux-limiter will drop the order of + /// accuracy to add numerical dissipation. + int spatialOrder() const { return (mIntegrator == Scheme::MAC || + mIntegrator == Scheme::BFECC) ? 2 : 1; } + + /// @brief Return the temporal order of accuracy of the advection scheme + /// + /// @note This is the optimal order in smooth regions. In + /// non-smooth regions the flux-limiter will drop the order of + /// accuracy to add numerical dissipation. + int temporalOrder() const { + switch (mIntegrator) { + case Scheme::SEMI: return 1; + case Scheme::MID: return 2; + case Scheme::RK3: return 3; + case Scheme::RK4: return 4; + case Scheme::BFECC:return 2; + case Scheme::MAC: return 2; + } + return 0;//should never reach this point + } + + /// @brief Set the integrator (see details in the table above) + void setIntegrator(Scheme::SemiLagrangian integrator) { mIntegrator = integrator; } + + /// @brief Return the integrator (see details in the table above) + Scheme::SemiLagrangian getIntegrator() const { return mIntegrator; } + + /// @brief Set the limiter (see details above) + void setLimiter(Scheme::Limiter limiter) { mLimiter = limiter; } + + /// @brief Retrun the limiter (see details above) + Scheme::Limiter getLimiter() const { return mLimiter; } + + /// @brief Return @c true if a limiter will be applied based on + /// the current settings. + bool isLimiterOn() const { return this->spatialOrder()>1 && + mLimiter != Scheme::NO_LIMITER; } + + /// @return the grain-size used for multi-threading + /// @note A grainsize of 0 implies serial execution + size_t getGrainSize() const { return mGrainSize; } + + /// @brief Set the grain-size used for multi-threading + /// @note A grainsize of 0 disables multi-threading + /// @warning A small grainsize can degrade performance, + /// both in terms of time and memory footprint! + void setGrainSize(size_t grainsize) { mGrainSize = grainsize; } + + /// @return the number of sub-steps per integration (always larger + /// than or equal to 1). + int getSubSteps() const { return mSubSteps; } + + /// @brief Set the number of sub-steps per integration. + /// @note The only reason to increase the sub-step above its + /// default value of one is to reduce the memory footprint + /// due to significant dilation. Values smaller than 1 will + /// be clamped to 1! + void setSubSteps(int substeps) { mSubSteps = math::Max(1, substeps); } + + /// @brief Return the maximum magnitude of the velocity in the + /// advection velocity field defined during construction. + double getMaxVelocity() const { return mMaxVelocity; } + + /// @return Returns the maximum distance in voxel units of @a inGrid + /// that a particle can travel in the time-step @a dt when advected + /// in the velocity field defined during construction. + /// + /// @details This method is useful when dilating sparse volume + /// grids to pad boundary regions. Excessive dilation can be + /// computationally expensive so use this method to prevent + /// or warn against run-away computation. + /// + /// @throw RuntimeError if @a inGrid does not have uniform voxels. + template + int getMaxDistance(const VolumeGridT& inGrid, double dt) const + { + if (!inGrid.hasUniformVoxels()) { + OPENVDB_THROW(RuntimeError, "Volume grid does not have uniform voxels!"); + } + const double d = mMaxVelocity*math::Abs(dt)/inGrid.voxelSize()[0]; + return static_cast( math::RoundUp(d) ); + } + + /// @return Returns a new grid that is the result of passive advection + /// of all the active values the input grid by @a timeStep. + /// + /// @param inGrid The input grid to be advected (unmodified) + /// @param timeStep Time-step of the Runge-Kutta integrator. + /// + /// @details This method will advect all of the active values in + /// the input @a inGrid. To achieve this a + /// deep-copy is dilated to account for the material + /// transport. This dilation step can be slow for large + /// time steps @a dt or a velocity field with large magnitudes. + /// + /// @warning If the VolumeSamplerT is of higher order than one + /// (i.e. tri-linear interpolation) instabilities are + /// known to occure. To suppress those monotonicity + /// constrains or flux-limiters need to be applies. + /// + /// @throw RuntimeError if @a inGrid does not have uniform voxels. + template//only C++11 allows for a default argument + typename VolumeGridT::Ptr advect(const VolumeGridT& inGrid, double timeStep) + { + typename VolumeGridT::Ptr outGrid = inGrid.deepCopy(); + const double dt = timeStep/mSubSteps; + const int n = this->getMaxDistance(inGrid, dt); + dilateActiveValues( outGrid->tree(), n, NN_FACE, EXPAND_TILES); + this->template cook(*outGrid, inGrid, dt); + for (int step = 1; step < mSubSteps; ++step) { + typename VolumeGridT::Ptr tmpGrid = outGrid->deepCopy(); + dilateActiveValues( tmpGrid->tree(), n, NN_FACE, EXPAND_TILES); + this->template cook(*tmpGrid, *outGrid, dt); + outGrid.swap( tmpGrid ); + } + + return outGrid; + } + + /// @return Returns a new grid that is the result of + /// passive advection of the active values in @a inGrid + /// that intersect the active values in @c mask. The time + /// of the output grid is incremented by @a timeStep. + /// + /// @param inGrid The input grid to be advected (unmodified). + /// @param mask The mask of active values defining the active voxels + /// in @c inGrid on which to perform advection. Only + /// if a value is active in both grids will it be modified. + /// @param timeStep Time-step for a single Runge-Kutta integration step. + /// + /// + /// @details This method will advect all of the active values in + /// the input @a inGrid that intersects with the + /// active values in @a mask. To achieve this a + /// deep-copy is dilated to account for the material + /// transport and finally cropped to the intersection + /// with @a mask. The dilation step can be slow for large + /// time steps @a dt or fast moving velocity fields. + /// + /// @warning If the VolumeSamplerT is of higher order the one + /// (i.e. tri-linear interpolation) instabilities are + /// known to occure. To suppress those monotonicity + /// constrains or flux-limiters need to be applies. + /// + /// @throw RuntimeError if @a inGrid is not aligned with @a mask + /// or if its voxels are not uniform. + template//only C++11 allows for a default argument + typename VolumeGridT::Ptr advect(const VolumeGridT& inGrid, const MaskGridT& mask, double timeStep) + { + if (inGrid.transform() != mask.transform()) { + OPENVDB_THROW(RuntimeError, "Volume grid and mask grid are misaligned! Consider " + "resampling either of the two grids into the index space of the other."); + } + typename VolumeGridT::Ptr outGrid = inGrid.deepCopy(); + const double dt = timeStep/mSubSteps; + const int n = this->getMaxDistance(inGrid, dt); + dilateActiveValues( outGrid->tree(), n, NN_FACE, EXPAND_TILES); + outGrid->topologyIntersection( mask ); + pruneInactive( outGrid->tree(), mGrainSize>0, mGrainSize ); + this->template cook(*outGrid, inGrid, dt); + outGrid->topologyUnion( inGrid ); + + for (int step = 1; step < mSubSteps; ++step) { + typename VolumeGridT::Ptr tmpGrid = outGrid->deepCopy(); + dilateActiveValues( tmpGrid->tree(), n, NN_FACE, EXPAND_TILES); + tmpGrid->topologyIntersection( mask ); + pruneInactive( tmpGrid->tree(), mGrainSize>0, mGrainSize ); + this->template cook(*tmpGrid, *outGrid, dt); + tmpGrid->topologyUnion( inGrid ); + outGrid.swap( tmpGrid ); + } + return outGrid; + } + +private: + // disallow copy construction and copy by assignment! + VolumeAdvection(const VolumeAdvection&);// not implemented + VolumeAdvection& operator=(const VolumeAdvection&);// not implemented + + void start(const char* str) const + { + if (mInterrupter) mInterrupter->start(str); + } + void stop() const + { + if (mInterrupter) mInterrupter->end(); + } + bool interrupt() const + { + if (mInterrupter && util::wasInterrupted(mInterrupter)) { + tbb::task::self().cancel_group_execution(); + return true; + } + return false; + } + + template + void cook(VolumeGridT& outGrid, const VolumeGridT& inGrid, double dt) + { + switch (mIntegrator) { + case Scheme::SEMI: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + case Scheme::MID: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + case Scheme::RK3: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + case Scheme::RK4: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + case Scheme::BFECC: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + case Scheme::MAC: { + Advect adv(inGrid, *this); + adv.cook(outGrid, dt); + break; + } + default: + OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!"); + } + pruneInactive(outGrid.tree(), mGrainSize>0, mGrainSize); + } + + // Private class that implements the multi-threaded advection + template struct Advect; + + // Private member data of VolumeAdvection + const VelocityGridT& mVelGrid; + double mMaxVelocity; + InterrupterType* mInterrupter; + Scheme::SemiLagrangian mIntegrator; + Scheme::Limiter mLimiter; + size_t mGrainSize; + int mSubSteps; +};//end of VolumeAdvection class + +// Private class that implements the multi-threaded advection +template +template +struct VolumeAdvection::Advect +{ + using TreeT = typename VolumeGridT::TreeType; + using AccT = typename VolumeGridT::ConstAccessor; + using ValueT = typename TreeT::ValueType; + using LeafManagerT = typename tree::LeafManager; + using LeafNodeT = typename LeafManagerT::LeafNodeType; + using LeafRangeT = typename LeafManagerT::LeafRange; + using VelocityIntegratorT = VelocityIntegrator; + using RealT = typename VelocityIntegratorT::ElementType; + using VoxelIterT = typename TreeT::LeafNodeType::ValueOnIter; + + Advect(const VolumeGridT& inGrid, const VolumeAdvection& parent) + : mTask(nullptr) + , mInGrid(&inGrid) + , mVelocityInt(parent.mVelGrid) + , mParent(&parent) + { + } + inline void cook(const LeafRangeT& range) + { + if (mParent->mGrainSize > 0) { + tbb::parallel_for(range, *this); + } else { + (*this)(range); + } + } + void operator()(const LeafRangeT& range) const + { + assert(mTask); + mTask(const_cast(this), range); + } + void cook(VolumeGridT& outGrid, double time_step) + { + namespace ph = std::placeholders; + + mParent->start("Advecting volume"); + LeafManagerT manager(outGrid.tree(), mParent->spatialOrder()==2 ? 1 : 0); + const LeafRangeT range = manager.leafRange(mParent->mGrainSize); + const RealT dt = static_cast(-time_step);//method of characteristics backtracks + if (mParent->mIntegrator == Scheme::MAC) { + mTask = std::bind(&Advect::rk, ph::_1, ph::_2, dt, 0, mInGrid);//out[0]=forward + this->cook(range); + mTask = std::bind(&Advect::rk, ph::_1, ph::_2,-dt, 1, &outGrid);//out[1]=backward + this->cook(range); + mTask = std::bind(&Advect::mac, ph::_1, ph::_2);//out[0] = out[0] + (in[0] - out[1])/2 + this->cook(range); + } else if (mParent->mIntegrator == Scheme::BFECC) { + mTask = std::bind(&Advect::rk, ph::_1, ph::_2, dt, 0, mInGrid);//out[0]=forward + this->cook(range); + mTask = std::bind(&Advect::rk, ph::_1, ph::_2,-dt, 1, &outGrid);//out[1]=backward + this->cook(range); + mTask = std::bind(&Advect::bfecc, ph::_1, ph::_2);//out[0] = (3*in[0] - out[1])/2 + this->cook(range); + mTask = std::bind(&Advect::rk, ph::_1, ph::_2, dt, 1, &outGrid);//out[1]=forward + this->cook(range); + manager.swapLeafBuffer(1);// out[0] = out[1] + } else {// SEMI, MID, RK3 and RK4 + mTask = std::bind(&Advect::rk, ph::_1, ph::_2, dt, 0, mInGrid);//forward + this->cook(range); + } + + if (mParent->spatialOrder()==2) manager.removeAuxBuffers(); + + mTask = std::bind(&Advect::limiter, ph::_1, ph::_2, dt);// out[0] = limiter( out[0] ) + this->cook(range); + + mParent->stop(); + } + // Last step of the MacCormack scheme: out[0] = out[0] + (in[0] - out[1])/2 + void mac(const LeafRangeT& range) const + { + if (mParent->interrupt()) return; + assert( mParent->mIntegrator == Scheme::MAC ); + AccT acc = mInGrid->getAccessor(); + for (typename LeafRangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueT* out0 = leafIter.buffer( 0 ).data();// forward + const ValueT* out1 = leafIter.buffer( 1 ).data();// backward + const LeafNodeT* leaf = acc.probeConstLeaf( leafIter->origin() ); + if (leaf != nullptr) { + const ValueT* in0 = leaf->buffer().data(); + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + const Index i = voxelIter.pos(); + out0[i] += RealT(0.5) * ( in0[i] - out1[i] ); + } + } else { + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + const Index i = voxelIter.pos(); + out0[i] += RealT(0.5) * ( acc.getValue(voxelIter.getCoord()) - out1[i] ); + }//loop over active voxels + } + }//loop over leaf nodes + } + // Intermediate step in the BFECC scheme: out[0] = (3*in[0] - out[1])/2 + void bfecc(const LeafRangeT& range) const + { + if (mParent->interrupt()) return; + assert( mParent->mIntegrator == Scheme::BFECC ); + AccT acc = mInGrid->getAccessor(); + for (typename LeafRangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueT* out0 = leafIter.buffer( 0 ).data();// forward + const ValueT* out1 = leafIter.buffer( 1 ).data();// backward + const LeafNodeT* leaf = acc.probeConstLeaf(leafIter->origin()); + if (leaf != nullptr) { + const ValueT* in0 = leaf->buffer().data(); + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + const Index i = voxelIter.pos(); + out0[i] = RealT(0.5)*( RealT(3)*in0[i] - out1[i] ); + }//loop over active voxels + } else { + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + const Index i = voxelIter.pos(); + out0[i] = RealT(0.5)*( RealT(3)*acc.getValue(voxelIter.getCoord()) - out1[i] ); + }//loop over active voxels + } + }//loop over leaf nodes + } + // Semi-Lagrangian integration with Runge-Kutta of various orders (1->4) + void rk(const LeafRangeT& range, RealT dt, size_t n, const VolumeGridT* grid) const + { + if (mParent->interrupt()) return; + const math::Transform& xform = mInGrid->transform(); + AccT acc = grid->getAccessor(); + for (typename LeafRangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueT* phi = leafIter.buffer( n ).data(); + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + ValueT& value = phi[voxelIter.pos()]; + Vec3d wPos = xform.indexToWorld(voxelIter.getCoord()); + mVelocityInt.template rungeKutta(dt, wPos); + value = SamplerT::sample(acc, xform.worldToIndex(wPos)); + }//loop over active voxels + }//loop over leaf nodes + } + void limiter(const LeafRangeT& range, RealT dt) const + { + if (mParent->interrupt()) return; + const bool doLimiter = mParent->isLimiterOn(); + const bool doClamp = mParent->mLimiter == Scheme::CLAMP; + ValueT data[2][2][2], vMin, vMax; + const math::Transform& xform = mInGrid->transform(); + AccT acc = mInGrid->getAccessor(); + const ValueT backg = mInGrid->background(); + for (typename LeafRangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) { + ValueT* phi = leafIter.buffer( 0 ).data(); + for (VoxelIterT voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) { + ValueT& value = phi[voxelIter.pos()]; + + if ( doLimiter ) { + assert(OrderRK == 1); + Vec3d wPos = xform.indexToWorld(voxelIter.getCoord()); + mVelocityInt.template rungeKutta<1, Vec3d>(dt, wPos);// Explicit Euler + Vec3d iPos = xform.worldToIndex(wPos); + Coord ijk = Coord::floor( iPos ); + BoxSampler::getValues(data, acc, ijk); + BoxSampler::extrema(data, vMin, vMax); + if ( doClamp ) { + value = math::Clamp( value, vMin, vMax); + } else if (value < vMin || value > vMax ) { + iPos -= Vec3R(ijk[0], ijk[1], ijk[2]);//unit coordinates + value = BoxSampler::trilinearInterpolation( data, iPos ); + } + } + + if (math::isApproxEqual(value, backg, math::Delta::value())) { + value = backg; + leafIter->setValueOff( voxelIter.pos() ); + } + }//loop over active voxels + }//loop over leaf nodes + } + // Public member data of the private Advect class + + typename std::function mTask; + const VolumeGridT* mInGrid; + const VelocityIntegratorT mVelocityInt;// lightweight! + const VolumeAdvection* mParent; +};// end of private member class Advect + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VOLUME_ADVECT_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/VolumeToMesh.h b/openvdb/tools/VolumeToMesh.h new file mode 100644 index 00000000..375403e0 --- /dev/null +++ b/openvdb/tools/VolumeToMesh.h @@ -0,0 +1,5262 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file VolumeToMesh.h +/// +/// @brief Extract polygonal surfaces from scalar volumes. +/// +/// @author Mihai Alden + +#ifndef OPENVDB_TOOLS_VOLUME_TO_MESH_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VOLUME_TO_MESH_HAS_BEEN_INCLUDED + +#include +#include // for ISGradient +#include +#include // for INVALID_IDX + +#include +#include +#include +#include + +#include // for std::isfinite() +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + + +//////////////////////////////////////// + + +// Wrapper functions for the VolumeToMesh converter + + +/// @brief Uniformly mesh any scalar grid that has a continuous isosurface. +/// +/// @param grid a scalar grid to mesh +/// @param points output list of world space points +/// @param quads output quad index list +/// @param isovalue determines which isosurface to mesh +/// +/// @throw TypeError if @a grid does not have a scalar value type +template +inline void +volumeToMesh( + const GridType& grid, + std::vector& points, + std::vector& quads, + double isovalue = 0.0); + + +/// @brief Adaptively mesh any scalar grid that has a continuous isosurface. +/// +/// @param grid a scalar grid to mesh +/// @param points output list of world space points +/// @param triangles output triangle index list +/// @param quads output quad index list +/// @param isovalue determines which isosurface to mesh +/// @param adaptivity surface adaptivity threshold [0 to 1] +/// @param relaxDisorientedTriangles toggle relaxing disoriented triangles during +/// adaptive meshing. +/// +/// @throw TypeError if @a grid does not have a scalar value type +template +inline void +volumeToMesh( + const GridType& grid, + std::vector& points, + std::vector& triangles, + std::vector& quads, + double isovalue = 0.0, + double adaptivity = 0.0, + bool relaxDisorientedTriangles = true); + + +//////////////////////////////////////// + + +/// @brief Polygon flags, used for reference based meshing. +enum { POLYFLAG_EXTERIOR = 0x1, POLYFLAG_FRACTURE_SEAM = 0x2, POLYFLAG_SUBDIVIDED = 0x4 }; + + +/// @brief Collection of quads and triangles +class PolygonPool +{ +public: + + inline PolygonPool(); + inline PolygonPool(const size_t numQuads, const size_t numTriangles); + + inline void copy(const PolygonPool& rhs); + + inline void resetQuads(size_t size); + inline void clearQuads(); + + inline void resetTriangles(size_t size); + inline void clearTriangles(); + + + // polygon accessor methods + + const size_t& numQuads() const { return mNumQuads; } + + openvdb::Vec4I& quad(size_t n) { return mQuads[n]; } + const openvdb::Vec4I& quad(size_t n) const { return mQuads[n]; } + + + const size_t& numTriangles() const { return mNumTriangles; } + + openvdb::Vec3I& triangle(size_t n) { return mTriangles[n]; } + const openvdb::Vec3I& triangle(size_t n) const { return mTriangles[n]; } + + + // polygon flags accessor methods + + char& quadFlags(size_t n) { return mQuadFlags[n]; } + const char& quadFlags(size_t n) const { return mQuadFlags[n]; } + + char& triangleFlags(size_t n) { return mTriangleFlags[n]; } + const char& triangleFlags(size_t n) const { return mTriangleFlags[n]; } + + + // reduce the polygon containers, n has to + // be smaller than the current container size. + + inline bool trimQuads(const size_t n, bool reallocate = false); + inline bool trimTrinagles(const size_t n, bool reallocate = false); + +private: + // disallow copy by assignment + void operator=(const PolygonPool&) {} + + size_t mNumQuads, mNumTriangles; + std::unique_ptr mQuads; + std::unique_ptr mTriangles; + std::unique_ptr mQuadFlags, mTriangleFlags; +}; + + +/// @{ +/// @brief Point and primitive list types. +using PointList = std::unique_ptr; +using PolygonPoolList = std::unique_ptr; +/// @} + + +//////////////////////////////////////// + + +/// @brief Mesh any scalar grid that has a continuous isosurface. +struct VolumeToMesh +{ + + /// @param isovalue Determines which isosurface to mesh. + /// @param adaptivity Adaptivity threshold [0 to 1] + /// @param relaxDisorientedTriangles Toggle relaxing disoriented triangles during + /// adaptive meshing. + VolumeToMesh(double isovalue = 0, double adaptivity = 0, bool relaxDisorientedTriangles = true); + + ////////// + + /// @{ + // Mesh data accessors + + size_t pointListSize() const { return mPointListSize; } + PointList& pointList() { return mPoints; } + const PointList& pointList() const { return mPoints; } + + size_t polygonPoolListSize() const { return mPolygonPoolListSize; } + PolygonPoolList& polygonPoolList() { return mPolygons; } + const PolygonPoolList& polygonPoolList() const { return mPolygons; } + + std::vector& pointFlags() { return mPointFlags; } + const std::vector& pointFlags() const { return mPointFlags; } + /// @} + + + ////////// + + + /// @brief Main call + /// @note Call with scalar typed grid. + template + void operator()(const InputGridType&); + + + ////////// + + + /// @brief When surfacing fractured SDF fragments, the original unfractured + /// SDF grid can be used to eliminate seam lines and tag polygons that are + /// coincident with the reference surface with the @c POLYFLAG_EXTERIOR + /// flag and polygons that are in proximity to the seam lines with the + /// @c POLYFLAG_FRACTURE_SEAM flag. (The performance cost for using this + /// reference based scheme compared to the regular meshing scheme is + /// approximately 15% for the first fragment and neglect-able for + /// subsequent fragments.) + /// + /// @note Attributes from the original asset such as uv coordinates, normals etc. + /// are typically transfered to polygons that are marked with the + /// @c POLYFLAG_EXTERIOR flag. Polygons that are not marked with this flag + /// are interior to reference surface and might need projected UV coordinates + /// or a different material. Polygons marked as @c POLYFLAG_FRACTURE_SEAM can + /// be used to drive secondary elements such as debris and dust in a FX pipeline. + /// + /// @param grid reference surface grid of @c GridT type. + /// @param secAdaptivity Secondary adaptivity threshold [0 to 1]. Used in regions + /// that do not exist in the reference grid. (Parts of the + /// fragment surface that are not coincident with the + /// reference surface.) + void setRefGrid(const GridBase::ConstPtr& grid, double secAdaptivity = 0); + + + /// @param mask A boolean grid whose active topology defines the region to mesh. + /// @param invertMask Toggle to mesh the complement of the mask. + /// @note The mask's tree configuration has to match @c GridT's tree configuration. + void setSurfaceMask(const GridBase::ConstPtr& mask, bool invertMask = false); + + /// @param grid A scalar grid used as a spatial multiplier for the adaptivity threshold. + /// @note The grid's tree configuration has to match @c GridT's tree configuration. + void setSpatialAdaptivity(const GridBase::ConstPtr& grid); + + + /// @param tree A boolean tree whose active topology defines the adaptivity mask. + /// @note The tree configuration has to match @c GridT's tree configuration. + void setAdaptivityMask(const TreeBase::ConstPtr& tree); + +private: + // Disallow copying + VolumeToMesh(const VolumeToMesh&); + VolumeToMesh& operator=(const VolumeToMesh&); + + + PointList mPoints; + PolygonPoolList mPolygons; + + size_t mPointListSize, mSeamPointListSize, mPolygonPoolListSize; + double mIsovalue, mPrimAdaptivity, mSecAdaptivity; + + GridBase::ConstPtr mRefGrid, mSurfaceMaskGrid, mAdaptivityGrid; + TreeBase::ConstPtr mAdaptivityMaskTree; + + TreeBase::Ptr mRefSignTree, mRefIdxTree; + + bool mInvertSurfaceMask, mRelaxDisorientedTriangles; + + std::unique_ptr mQuantizedSeamPoints; + std::vector mPointFlags; +}; // struct VolumeToMesh + + +//////////////////////////////////////// + + +/// @brief Given a set of tangent elements, @c points with corresponding @c normals, +/// this method returns the intersection point of all tangent elements. +/// +/// @note Used to extract surfaces with sharp edges and corners from volume data, +/// see the following paper for details: "Feature Sensitive Surface +/// Extraction from Volume Data, Kobbelt et al. 2001". +inline Vec3d findFeaturePoint( + const std::vector& points, + const std::vector& normals) +{ + using Mat3d = math::Mat3d; + + Vec3d avgPos(0.0); + + if (points.empty()) return avgPos; + + for (size_t n = 0, N = points.size(); n < N; ++n) { + avgPos += points[n]; + } + + avgPos /= double(points.size()); + + // Unique components of the 3x3 A^TA matrix, where A is + // the matrix of normals. + double m00=0,m01=0,m02=0, + m11=0,m12=0, + m22=0; + + // The rhs vector, A^Tb, where b = n dot p + Vec3d rhs(0.0); + + for (size_t n = 0, N = points.size(); n < N; ++n) { + + const Vec3d& n_ref = normals[n]; + + // A^TA + m00 += n_ref[0] * n_ref[0]; // diagonal + m11 += n_ref[1] * n_ref[1]; + m22 += n_ref[2] * n_ref[2]; + + m01 += n_ref[0] * n_ref[1]; // Upper-tri + m02 += n_ref[0] * n_ref[2]; + m12 += n_ref[1] * n_ref[2]; + + // A^Tb (centered around the origin) + rhs += n_ref * n_ref.dot(points[n] - avgPos); + } + + Mat3d A(m00,m01,m02, + m01,m11,m12, + m02,m12,m22); + + /* + // Inverse + const double det = A.det(); + if (det > 0.01) { + Mat3d A_inv = A.adjoint(); + A_inv *= (1.0 / det); + + return avgPos + A_inv * rhs; + } + */ + + // Compute the pseudo inverse + + math::Mat3d eigenVectors; + Vec3d eigenValues; + + diagonalizeSymmetricMatrix(A, eigenVectors, eigenValues, 300); + + Mat3d D = Mat3d::identity(); + + + double tolerance = std::max(std::abs(eigenValues[0]), std::abs(eigenValues[1])); + tolerance = std::max(tolerance, std::abs(eigenValues[2])); + tolerance *= 0.01; + + int clamped = 0; + for (int i = 0; i < 3; ++i ) { + if (std::abs(eigenValues[i]) < tolerance) { + D[i][i] = 0.0; + ++clamped; + } else { + D[i][i] = 1.0 / eigenValues[i]; + } + } + + // Assemble the pseudo inverse and calc. the intersection point + if (clamped < 3) { + Mat3d pseudoInv = eigenVectors * D * eigenVectors.transpose(); + return avgPos + pseudoInv * rhs; + } + + return avgPos; +} + + +//////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// + + +// Internal utility objects and implementation details + + +namespace volume_to_mesh_internal { + +template +struct FillArray +{ + FillArray(ValueType* array, const ValueType& v) : mArray(array), mValue(v) { } + + void operator()(const tbb::blocked_range& range) const { + const ValueType v = mValue; + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + mArray[n] = v; + } + } + + ValueType * const mArray; + const ValueType mValue; +}; + + +template +inline void +fillArray(ValueType* array, const ValueType& val, const size_t length) +{ + const auto grainSize = std::max( + length / tbb::task_scheduler_init::default_num_threads(), 1024); + const tbb::blocked_range range(0, length, grainSize); + tbb::parallel_for(range, FillArray(array, val), tbb::simple_partitioner()); +} + + +/// @brief Bit-flags used to classify cells. +enum { SIGNS = 0xFF, EDGES = 0xE00, INSIDE = 0x100, + XEDGE = 0x200, YEDGE = 0x400, ZEDGE = 0x800, SEAM = 0x1000}; + + +/// @brief Used to quickly determine if a given cell is adaptable. +const bool sAdaptable[256] = { + 1,1,1,1,1,0,1,1,1,1,0,1,1,1,1,1,1,1,0,1,0,0,0,1,0,1,0,1,0,1,0,1, + 1,0,1,1,0,0,1,1,0,0,0,1,0,0,1,1,1,1,1,1,0,0,1,1,0,1,0,1,0,0,0,1, + 1,0,0,0,1,0,1,1,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 1,0,1,1,1,0,1,1,0,0,0,0,1,0,1,1,1,1,1,1,1,0,1,1,0,0,0,0,0,0,0,1, + 1,0,0,0,0,0,0,0,1,1,0,1,1,1,1,1,1,1,0,1,0,0,0,0,1,1,0,1,1,1,0,1, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,1,1,0,1,0,0,0,1, + 1,0,0,0,1,0,1,0,1,1,0,0,1,1,1,1,1,1,0,0,1,0,0,0,1,1,0,0,1,1,0,1, + 1,0,1,0,1,0,1,0,1,0,0,0,1,0,1,1,1,1,1,1,1,0,1,1,1,1,0,1,1,1,1,1}; + + +/// @brief Contains the ambiguous face index for certain cell configuration. +const unsigned char sAmbiguousFace[256] = { + 0,0,0,0,0,5,0,0,0,0,5,0,0,0,0,0,0,0,1,0,0,5,1,0,4,0,0,0,4,0,0,0, + 0,1,0,0,2,0,0,0,0,1,5,0,2,0,0,0,0,0,0,0,2,0,0,0,4,0,0,0,0,0,0,0, + 0,0,2,2,0,5,0,0,3,3,0,0,0,0,0,0,6,6,0,0,6,0,0,0,0,0,0,0,0,0,0,0, + 0,1,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,4,0,4,3,0,3,0,0,0,5,0,0,0,0,0,0,0,1,0,3,0,0,0,0,0,0,0,0,0,0,0, + 6,0,6,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,4,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; + + +/// @brief Lookup table for different cell sign configurations. The first entry specifies +/// the total number of points that need to be generated inside a cell and the +/// remaining 12 entries indicate different edge groups. +const unsigned char sEdgeGroupTable[256][13] = { + {0,0,0,0,0,0,0,0,0,0,0,0,0},{1,1,0,0,1,0,0,0,0,1,0,0,0},{1,1,1,0,0,0,0,0,0,0,1,0,0}, + {1,0,1,0,1,0,0,0,0,1,1,0,0},{1,0,1,1,0,0,0,0,0,0,0,1,0},{1,1,1,1,1,0,0,0,0,1,0,1,0}, + {1,1,0,1,0,0,0,0,0,0,1,1,0},{1,0,0,1,1,0,0,0,0,1,1,1,0},{1,0,0,1,1,0,0,0,0,0,0,0,1}, + {1,1,0,1,0,0,0,0,0,1,0,0,1},{1,1,1,1,1,0,0,0,0,0,1,0,1},{1,0,1,1,0,0,0,0,0,1,1,0,1}, + {1,0,1,0,1,0,0,0,0,0,0,1,1},{1,1,1,0,0,0,0,0,0,1,0,1,1},{1,1,0,0,1,0,0,0,0,0,1,1,1}, + {1,0,0,0,0,0,0,0,0,1,1,1,1},{1,0,0,0,0,1,0,0,1,1,0,0,0},{1,1,0,0,1,1,0,0,1,0,0,0,0}, + {1,1,1,0,0,1,0,0,1,1,1,0,0},{1,0,1,0,1,1,0,0,1,0,1,0,0},{2,0,1,1,0,2,0,0,2,2,0,1,0}, + {1,1,1,1,1,1,0,0,1,0,0,1,0},{1,1,0,1,0,1,0,0,1,1,1,1,0},{1,0,0,1,1,1,0,0,1,0,1,1,0}, + {1,0,0,1,1,1,0,0,1,1,0,0,1},{1,1,0,1,0,1,0,0,1,0,0,0,1},{2,2,1,1,2,1,0,0,1,2,1,0,1}, + {1,0,1,1,0,1,0,0,1,0,1,0,1},{1,0,1,0,1,1,0,0,1,1,0,1,1},{1,1,1,0,0,1,0,0,1,0,0,1,1}, + {2,1,0,0,1,2,0,0,2,1,2,2,2},{1,0,0,0,0,1,0,0,1,0,1,1,1},{1,0,0,0,0,1,1,0,0,0,1,0,0}, + {1,1,0,0,1,1,1,0,0,1,1,0,0},{1,1,1,0,0,1,1,0,0,0,0,0,0},{1,0,1,0,1,1,1,0,0,1,0,0,0}, + {1,0,1,1,0,1,1,0,0,0,1,1,0},{2,2,2,1,1,1,1,0,0,1,2,1,0},{1,1,0,1,0,1,1,0,0,0,0,1,0}, + {1,0,0,1,1,1,1,0,0,1,0,1,0},{2,0,0,2,2,1,1,0,0,0,1,0,2},{1,1,0,1,0,1,1,0,0,1,1,0,1}, + {1,1,1,1,1,1,1,0,0,0,0,0,1},{1,0,1,1,0,1,1,0,0,1,0,0,1},{1,0,1,0,1,1,1,0,0,0,1,1,1}, + {2,1,1,0,0,2,2,0,0,2,1,2,2},{1,1,0,0,1,1,1,0,0,0,0,1,1},{1,0,0,0,0,1,1,0,0,1,0,1,1}, + {1,0,0,0,0,0,1,0,1,1,1,0,0},{1,1,0,0,1,0,1,0,1,0,1,0,0},{1,1,1,0,0,0,1,0,1,1,0,0,0}, + {1,0,1,0,1,0,1,0,1,0,0,0,0},{1,0,1,1,0,0,1,0,1,1,1,1,0},{2,1,1,2,2,0,2,0,2,0,1,2,0}, + {1,1,0,1,0,0,1,0,1,1,0,1,0},{1,0,0,1,1,0,1,0,1,0,0,1,0},{1,0,0,1,1,0,1,0,1,1,1,0,1}, + {1,1,0,1,0,0,1,0,1,0,1,0,1},{2,1,2,2,1,0,2,0,2,1,0,0,2},{1,0,1,1,0,0,1,0,1,0,0,0,1}, + {2,0,2,0,2,0,1,0,1,2,2,1,1},{2,2,2,0,0,0,1,0,1,0,2,1,1},{2,2,0,0,2,0,1,0,1,2,0,1,1}, + {1,0,0,0,0,0,1,0,1,0,0,1,1},{1,0,0,0,0,0,1,1,0,0,0,1,0},{2,1,0,0,1,0,2,2,0,1,0,2,0}, + {1,1,1,0,0,0,1,1,0,0,1,1,0},{1,0,1,0,1,0,1,1,0,1,1,1,0},{1,0,1,1,0,0,1,1,0,0,0,0,0}, + {1,1,1,1,1,0,1,1,0,1,0,0,0},{1,1,0,1,0,0,1,1,0,0,1,0,0},{1,0,0,1,1,0,1,1,0,1,1,0,0}, + {1,0,0,1,1,0,1,1,0,0,0,1,1},{1,1,0,1,0,0,1,1,0,1,0,1,1},{2,1,2,2,1,0,1,1,0,0,1,2,1}, + {2,0,1,1,0,0,2,2,0,2,2,1,2},{1,0,1,0,1,0,1,1,0,0,0,0,1},{1,1,1,0,0,0,1,1,0,1,0,0,1}, + {1,1,0,0,1,0,1,1,0,0,1,0,1},{1,0,0,0,0,0,1,1,0,1,1,0,1},{1,0,0,0,0,1,1,1,1,1,0,1,0}, + {1,1,0,0,1,1,1,1,1,0,0,1,0},{2,1,1,0,0,2,2,1,1,1,2,1,0},{2,0,2,0,2,1,1,2,2,0,1,2,0}, + {1,0,1,1,0,1,1,1,1,1,0,0,0},{2,2,2,1,1,2,2,1,1,0,0,0,0},{2,2,0,2,0,1,1,2,2,2,1,0,0}, + {2,0,0,1,1,2,2,1,1,0,2,0,0},{2,0,0,1,1,1,1,2,2,1,0,1,2},{2,2,0,2,0,2,2,1,1,0,0,2,1}, + {4,3,2,2,3,4,4,1,1,3,4,2,1},{3,0,2,2,0,1,1,3,3,0,1,2,3},{2,0,2,0,2,2,2,1,1,2,0,0,1}, + {2,1,1,0,0,1,1,2,2,0,0,0,2},{3,1,0,0,1,2,2,3,3,1,2,0,3},{2,0,0,0,0,1,1,2,2,0,1,0,2}, + {1,0,0,0,0,1,0,1,0,0,1,1,0},{1,1,0,0,1,1,0,1,0,1,1,1,0},{1,1,1,0,0,1,0,1,0,0,0,1,0}, + {1,0,1,0,1,1,0,1,0,1,0,1,0},{1,0,1,1,0,1,0,1,0,0,1,0,0},{2,1,1,2,2,2,0,2,0,2,1,0,0}, + {1,1,0,1,0,1,0,1,0,0,0,0,0},{1,0,0,1,1,1,0,1,0,1,0,0,0},{1,0,0,1,1,1,0,1,0,0,1,1,1}, + {2,2,0,2,0,1,0,1,0,1,2,2,1},{2,2,1,1,2,2,0,2,0,0,0,1,2},{2,0,2,2,0,1,0,1,0,1,0,2,1}, + {1,0,1,0,1,1,0,1,0,0,1,0,1},{2,2,2,0,0,1,0,1,0,1,2,0,1},{1,1,0,0,1,1,0,1,0,0,0,0,1}, + {1,0,0,0,0,1,0,1,0,1,0,0,1},{1,0,0,0,0,0,0,1,1,1,1,1,0},{1,1,0,0,1,0,0,1,1,0,1,1,0}, + {1,1,1,0,0,0,0,1,1,1,0,1,0},{1,0,1,0,1,0,0,1,1,0,0,1,0},{1,0,1,1,0,0,0,1,1,1,1,0,0}, + {2,2,2,1,1,0,0,1,1,0,2,0,0},{1,1,0,1,0,0,0,1,1,1,0,0,0},{1,0,0,1,1,0,0,1,1,0,0,0,0}, + {2,0,0,2,2,0,0,1,1,2,2,2,1},{2,1,0,1,0,0,0,2,2,0,1,1,2},{3,2,1,1,2,0,0,3,3,2,0,1,3}, + {2,0,1,1,0,0,0,2,2,0,0,1,2},{2,0,1,0,1,0,0,2,2,1,1,0,2},{2,1,1,0,0,0,0,2,2,0,1,0,2}, + {2,1,0,0,1,0,0,2,2,1,0,0,2},{1,0,0,0,0,0,0,1,1,0,0,0,1},{1,0,0,0,0,0,0,1,1,0,0,0,1}, + {1,1,0,0,1,0,0,1,1,1,0,0,1},{2,1,1,0,0,0,0,2,2,0,1,0,2},{1,0,1,0,1,0,0,1,1,1,1,0,1}, + {1,0,1,1,0,0,0,1,1,0,0,1,1},{2,1,1,2,2,0,0,1,1,1,0,1,2},{1,1,0,1,0,0,0,1,1,0,1,1,1}, + {2,0,0,1,1,0,0,2,2,2,2,2,1},{1,0,0,1,1,0,0,1,1,0,0,0,0},{1,1,0,1,0,0,0,1,1,1,0,0,0}, + {1,1,1,1,1,0,0,1,1,0,1,0,0},{1,0,1,1,0,0,0,1,1,1,1,0,0},{1,0,1,0,1,0,0,1,1,0,0,1,0}, + {1,1,1,0,0,0,0,1,1,1,0,1,0},{1,1,0,0,1,0,0,1,1,0,1,1,0},{1,0,0,0,0,0,0,1,1,1,1,1,0}, + {1,0,0,0,0,1,0,1,0,1,0,0,1},{1,1,0,0,1,1,0,1,0,0,0,0,1},{1,1,1,0,0,1,0,1,0,1,1,0,1}, + {1,0,1,0,1,1,0,1,0,0,1,0,1},{1,0,1,1,0,1,0,1,0,1,0,1,1},{2,2,2,1,1,2,0,2,0,0,0,2,1}, + {2,1,0,1,0,2,0,2,0,1,2,2,1},{2,0,0,2,2,1,0,1,0,0,1,1,2},{1,0,0,1,1,1,0,1,0,1,0,0,0}, + {1,1,0,1,0,1,0,1,0,0,0,0,0},{2,1,2,2,1,2,0,2,0,1,2,0,0},{1,0,1,1,0,1,0,1,0,0,1,0,0}, + {1,0,1,0,1,1,0,1,0,1,0,1,0},{1,1,1,0,0,1,0,1,0,0,0,1,0},{2,2,0,0,2,1,0,1,0,2,1,1,0}, + {1,0,0,0,0,1,0,1,0,0,1,1,0},{1,0,0,0,0,1,1,1,1,0,1,0,1},{2,1,0,0,1,2,1,1,2,2,1,0,1}, + {1,1,1,0,0,1,1,1,1,0,0,0,1},{2,0,2,0,2,1,2,2,1,1,0,0,2},{2,0,1,1,0,1,2,2,1,0,1,2,1}, + {4,1,1,3,3,2,4,4,2,2,1,4,3},{2,2,0,2,0,2,1,1,2,0,0,1,2},{3,0,0,1,1,2,3,3,2,2,0,3,1}, + {1,0,0,1,1,1,1,1,1,0,1,0,0},{2,2,0,2,0,1,2,2,1,1,2,0,0},{2,2,1,1,2,2,1,1,2,0,0,0,0}, + {2,0,1,1,0,2,1,1,2,2,0,0,0},{2,0,2,0,2,2,1,1,2,0,2,1,0},{3,1,1,0,0,3,2,2,3,3,1,2,0}, + {2,1,0,0,1,1,2,2,1,0,0,2,0},{2,0,0,0,0,2,1,1,2,2,0,1,0},{1,0,0,0,0,0,1,1,0,1,1,0,1}, + {1,1,0,0,1,0,1,1,0,0,1,0,1},{1,1,1,0,0,0,1,1,0,1,0,0,1},{1,0,1,0,1,0,1,1,0,0,0,0,1}, + {2,0,2,2,0,0,1,1,0,2,2,1,2},{3,1,1,2,2,0,3,3,0,0,1,3,2},{2,1,0,1,0,0,2,2,0,1,0,2,1}, + {2,0,0,1,1,0,2,2,0,0,0,2,1},{1,0,0,1,1,0,1,1,0,1,1,0,0},{1,1,0,1,0,0,1,1,0,0,1,0,0}, + {2,2,1,1,2,0,1,1,0,2,0,0,0},{1,0,1,1,0,0,1,1,0,0,0,0,0},{2,0,1,0,1,0,2,2,0,1,1,2,0}, + {2,1,1,0,0,0,2,2,0,0,1,2,0},{2,1,0,0,1,0,2,2,0,1,0,2,0},{1,0,0,0,0,0,1,1,0,0,0,1,0}, + {1,0,0,0,0,0,1,0,1,0,0,1,1},{1,1,0,0,1,0,1,0,1,1,0,1,1},{1,1,1,0,0,0,1,0,1,0,1,1,1}, + {2,0,2,0,2,0,1,0,1,1,1,2,2},{1,0,1,1,0,0,1,0,1,0,0,0,1},{2,2,2,1,1,0,2,0,2,2,0,0,1}, + {1,1,0,1,0,0,1,0,1,0,1,0,1},{2,0,0,2,2,0,1,0,1,1,1,0,2},{1,0,0,1,1,0,1,0,1,0,0,1,0}, + {1,1,0,1,0,0,1,0,1,1,0,1,0},{2,2,1,1,2,0,2,0,2,0,2,1,0},{2,0,2,2,0,0,1,0,1,1,1,2,0}, + {1,0,1,0,1,0,1,0,1,0,0,0,0},{1,1,1,0,0,0,1,0,1,1,0,0,0},{1,1,0,0,1,0,1,0,1,0,1,0,0}, + {1,0,0,0,0,0,1,0,1,1,1,0,0},{1,0,0,0,0,1,1,0,0,1,0,1,1},{1,1,0,0,1,1,1,0,0,0,0,1,1}, + {2,2,2,0,0,1,1,0,0,2,1,2,2},{2,0,1,0,1,2,2,0,0,0,2,1,1},{1,0,1,1,0,1,1,0,0,1,0,0,1}, + {2,1,1,2,2,1,1,0,0,0,0,0,2},{2,1,0,1,0,2,2,0,0,1,2,0,1},{2,0,0,2,2,1,1,0,0,0,1,0,2}, + {1,0,0,1,1,1,1,0,0,1,0,1,0},{1,1,0,1,0,1,1,0,0,0,0,1,0},{3,1,2,2,1,3,3,0,0,1,3,2,0}, + {2,0,1,1,0,2,2,0,0,0,2,1,0},{1,0,1,0,1,1,1,0,0,1,0,0,0},{1,1,1,0,0,1,1,0,0,0,0,0,0}, + {2,2,0,0,2,1,1,0,0,2,1,0,0},{1,0,0,0,0,1,1,0,0,0,1,0,0},{1,0,0,0,0,1,0,0,1,0,1,1,1}, + {2,2,0,0,2,1,0,0,1,1,2,2,2},{1,1,1,0,0,1,0,0,1,0,0,1,1},{2,0,1,0,1,2,0,0,2,2,0,1,1}, + {1,0,1,1,0,1,0,0,1,0,1,0,1},{3,1,1,3,3,2,0,0,2,2,1,0,3},{1,1,0,1,0,1,0,0,1,0,0,0,1}, + {2,0,0,2,2,1,0,0,1,1,0,0,2},{1,0,0,1,1,1,0,0,1,0,1,1,0},{2,1,0,1,0,2,0,0,2,2,1,1,0}, + {2,1,2,2,1,1,0,0,1,0,0,2,0},{2,0,1,1,0,2,0,0,2,2,0,1,0},{1,0,1,0,1,1,0,0,1,0,1,0,0}, + {2,1,1,0,0,2,0,0,2,2,1,0,0},{1,1,0,0,1,1,0,0,1,0,0,0,0},{1,0,0,0,0,1,0,0,1,1,0,0,0}, + {1,0,0,0,0,0,0,0,0,1,1,1,1},{1,1,0,0,1,0,0,0,0,0,1,1,1},{1,1,1,0,0,0,0,0,0,1,0,1,1}, + {1,0,1,0,1,0,0,0,0,0,0,1,1},{1,0,1,1,0,0,0,0,0,1,1,0,1},{2,1,1,2,2,0,0,0,0,0,1,0,2}, + {1,1,0,1,0,0,0,0,0,1,0,0,1},{1,0,0,1,1,0,0,0,0,0,0,0,1},{1,0,0,1,1,0,0,0,0,1,1,1,0}, + {1,1,0,1,0,0,0,0,0,0,1,1,0},{2,1,2,2,1,0,0,0,0,1,0,2,0},{1,0,1,1,0,0,0,0,0,0,0,1,0}, + {1,0,1,0,1,0,0,0,0,1,1,0,0},{1,1,1,0,0,0,0,0,0,0,1,0,0},{1,1,0,0,1,0,0,0,0,1,0,0,0}, + {0,0,0,0,0,0,0,0,0,0,0,0,0}}; + + +//////////////////////////////////////// + +inline bool +isPlanarQuad( + const Vec3d& p0, const Vec3d& p1, + const Vec3d& p2, const Vec3d& p3, + double epsilon = 0.001) +{ + // compute representative plane + Vec3d normal = (p2-p0).cross(p1-p3); + normal.normalize(); + const Vec3d centroid = (p0 + p1 + p2 + p3); + const double d = centroid.dot(normal) * 0.25; + + + // test vertice distance to plane + double absDist = std::abs(p0.dot(normal) - d); + if (absDist > epsilon) return false; + + absDist = std::abs(p1.dot(normal) - d); + if (absDist > epsilon) return false; + + absDist = std::abs(p2.dot(normal) - d); + if (absDist > epsilon) return false; + + absDist = std::abs(p3.dot(normal) - d); + if (absDist > epsilon) return false; + + return true; +} + + +//////////////////////////////////////// + + +/// @{ +/// @brief Utility methods for point quantization. + +enum { + MASK_FIRST_10_BITS = 0x000003FF, + MASK_DIRTY_BIT = 0x80000000, + MASK_INVALID_BIT = 0x40000000 +}; + +inline uint32_t +packPoint(const Vec3d& v) +{ + uint32_t data = 0; + + // values are expected to be in the [0.0 to 1.0] range. + assert(!(v.x() > 1.0) && !(v.y() > 1.0) && !(v.z() > 1.0)); + assert(!(v.x() < 0.0) && !(v.y() < 0.0) && !(v.z() < 0.0)); + + data |= (uint32_t(v.x() * 1023.0) & MASK_FIRST_10_BITS) << 20; + data |= (uint32_t(v.y() * 1023.0) & MASK_FIRST_10_BITS) << 10; + data |= (uint32_t(v.z() * 1023.0) & MASK_FIRST_10_BITS); + + return data; +} + +inline Vec3d +unpackPoint(uint32_t data) +{ + Vec3d v; + v.z() = double(data & MASK_FIRST_10_BITS) * 0.0009775171; + data = data >> 10; + v.y() = double(data & MASK_FIRST_10_BITS) * 0.0009775171; + data = data >> 10; + v.x() = double(data & MASK_FIRST_10_BITS) * 0.0009775171; + + return v; +} + +/// @} + +//////////////////////////////////////// + +template +inline bool isBoolValue() { return false; } + +template<> +inline bool isBoolValue() { return true; } + + + +template +inline bool isInsideValue(T value, T isovalue) { return value < isovalue; } + +template<> +inline bool isInsideValue(bool value, bool /*isovalue*/) { return value; } + + +template +inline void +getCellVertexValues(const AccessorT& accessor, Coord ijk, + math::Tuple<8, typename AccessorT::ValueType>& values) +{ + values[0] = accessor.getValue(ijk); // i, j, k + ++ijk[0]; + values[1] = accessor.getValue(ijk); // i+1, j, k + ++ijk[2]; + values[2] = accessor.getValue(ijk); // i+1, j, k+1 + --ijk[0]; + values[3] = accessor.getValue(ijk); // i, j, k+1 + --ijk[2]; ++ijk[1]; + values[4] = accessor.getValue(ijk); // i, j+1, k + ++ijk[0]; + values[5] = accessor.getValue(ijk); // i+1, j+1, k + ++ijk[2]; + values[6] = accessor.getValue(ijk); // i+1, j+1, k+1 + --ijk[0]; + values[7] = accessor.getValue(ijk); // i, j+1, k+1 +} + + +template +inline void +getCellVertexValues(const LeafT& leaf, const Index offset, + math::Tuple<8, typename LeafT::ValueType>& values) +{ + values[0] = leaf.getValue(offset); // i, j, k + values[3] = leaf.getValue(offset + 1); // i, j, k+1 + values[4] = leaf.getValue(offset + LeafT::DIM); // i, j+1, k + values[7] = leaf.getValue(offset + LeafT::DIM + 1); // i, j+1, k+1 + values[1] = leaf.getValue(offset + (LeafT::DIM * LeafT::DIM)); // i+1, j, k + values[2] = leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + 1); // i+1, j, k+1 + values[5] = leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM); // i+1, j+1, k + values[6] = leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM + 1); // i+1, j+1, k+1 +} + + +template +inline uint8_t +computeSignFlags(const math::Tuple<8, ValueType>& values, const ValueType iso) +{ + unsigned signs = 0; + signs |= isInsideValue(values[0], iso) ? 1u : 0u; + signs |= isInsideValue(values[1], iso) ? 2u : 0u; + signs |= isInsideValue(values[2], iso) ? 4u : 0u; + signs |= isInsideValue(values[3], iso) ? 8u : 0u; + signs |= isInsideValue(values[4], iso) ? 16u : 0u; + signs |= isInsideValue(values[5], iso) ? 32u : 0u; + signs |= isInsideValue(values[6], iso) ? 64u : 0u; + signs |= isInsideValue(values[7], iso) ? 128u : 0u; + return uint8_t(signs); +} + + +/// @brief General method that computes the cell-sign configuration at the given +/// @c ijk coordinate. +template +inline uint8_t +evalCellSigns(const AccessorT& accessor, const Coord& ijk, typename AccessorT::ValueType iso) +{ + unsigned signs = 0; + Coord coord = ijk; // i, j, k + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 1u; + coord[0] += 1; // i+1, j, k + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 2u; + coord[2] += 1; // i+1, j, k+1 + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 4u; + coord[0] = ijk[0]; // i, j, k+1 + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 8u; + coord[1] += 1; coord[2] = ijk[2]; // i, j+1, k + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 16u; + coord[0] += 1; // i+1, j+1, k + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 32u; + coord[2] += 1; // i+1, j+1, k+1 + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 64u; + coord[0] = ijk[0]; // i, j+1, k+1 + if (isInsideValue(accessor.getValue(coord), iso)) signs |= 128u; + return uint8_t(signs); +} + + +/// @brief Leaf node optimized method that computes the cell-sign configuration +/// at the given local @c offset +template +inline uint8_t +evalCellSigns(const LeafT& leaf, const Index offset, typename LeafT::ValueType iso) +{ + unsigned signs = 0; + + // i, j, k + if (isInsideValue(leaf.getValue(offset), iso)) signs |= 1u; + + // i, j, k+1 + if (isInsideValue(leaf.getValue(offset + 1), iso)) signs |= 8u; + + // i, j+1, k + if (isInsideValue(leaf.getValue(offset + LeafT::DIM), iso)) signs |= 16u; + + // i, j+1, k+1 + if (isInsideValue(leaf.getValue(offset + LeafT::DIM + 1), iso)) signs |= 128u; + + // i+1, j, k + if (isInsideValue(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) ), iso)) signs |= 2u; + + // i+1, j, k+1 + if (isInsideValue(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + 1), iso)) signs |= 4u; + + // i+1, j+1, k + if (isInsideValue(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM), iso)) signs |= 32u; + + // i+1, j+1, k+1 + if (isInsideValue(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM + 1), iso)) signs |= 64u; + + return uint8_t(signs); +} + + +/// @brief Used to correct topological ambiguities related to two adjacent cells +/// that share an ambiguous face. +template +inline void +correctCellSigns(uint8_t& signs, uint8_t face, + const AccessorT& acc, Coord ijk, typename AccessorT::ValueType iso) +{ + switch (int(face)) { + case 1: + ijk[2] -= 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 3) signs = uint8_t(~signs); + break; + case 2: + ijk[0] += 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 4) signs = uint8_t(~signs); + break; + case 3: + ijk[2] += 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 1) signs = uint8_t(~signs); + break; + case 4: + ijk[0] -= 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 2) signs = uint8_t(~signs); + break; + case 5: + ijk[1] -= 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 6) signs = uint8_t(~signs); + break; + case 6: + ijk[1] += 1; + if (sAmbiguousFace[evalCellSigns(acc, ijk, iso)] == 5) signs = uint8_t(~signs); + break; + default: + break; + } +} + + +template +inline bool +isNonManifold(const AccessorT& accessor, const Coord& ijk, + typename AccessorT::ValueType isovalue, const int dim) +{ + int hDim = dim >> 1; + bool m, p[8]; // Corner signs + + Coord coord = ijk; // i, j, k + p[0] = isInsideValue(accessor.getValue(coord), isovalue); + coord[0] += dim; // i+dim, j, k + p[1] = isInsideValue(accessor.getValue(coord), isovalue); + coord[2] += dim; // i+dim, j, k+dim + p[2] = isInsideValue(accessor.getValue(coord), isovalue); + coord[0] = ijk[0]; // i, j, k+dim + p[3] = isInsideValue(accessor.getValue(coord), isovalue); + coord[1] += dim; coord[2] = ijk[2]; // i, j+dim, k + p[4] = isInsideValue(accessor.getValue(coord), isovalue); + coord[0] += dim; // i+dim, j+dim, k + p[5] = isInsideValue(accessor.getValue(coord), isovalue); + coord[2] += dim; // i+dim, j+dim, k+dim + p[6] = isInsideValue(accessor.getValue(coord), isovalue); + coord[0] = ijk[0]; // i, j+dim, k+dim + p[7] = isInsideValue(accessor.getValue(coord), isovalue); + + // Check if the corner sign configuration is ambiguous + unsigned signs = 0; + if (p[0]) signs |= 1u; + if (p[1]) signs |= 2u; + if (p[2]) signs |= 4u; + if (p[3]) signs |= 8u; + if (p[4]) signs |= 16u; + if (p[5]) signs |= 32u; + if (p[6]) signs |= 64u; + if (p[7]) signs |= 128u; + if (!sAdaptable[signs]) return true; + + // Manifold check + + // Evaluate edges + int i = ijk[0], ip = ijk[0] + hDim, ipp = ijk[0] + dim; + int j = ijk[1], jp = ijk[1] + hDim, jpp = ijk[1] + dim; + int k = ijk[2], kp = ijk[2] + hDim, kpp = ijk[2] + dim; + + // edge 1 + coord.reset(ip, j, k); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[1] != m) return true; + + // edge 2 + coord.reset(ipp, j, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[1] != m && p[2] != m) return true; + + // edge 3 + coord.reset(ip, j, kpp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[2] != m && p[3] != m) return true; + + // edge 4 + coord.reset(i, j, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[3] != m) return true; + + // edge 5 + coord.reset(ip, jpp, k); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[4] != m && p[5] != m) return true; + + // edge 6 + coord.reset(ipp, jpp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[5] != m && p[6] != m) return true; + + // edge 7 + coord.reset(ip, jpp, kpp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[6] != m && p[7] != m) return true; + + // edge 8 + coord.reset(i, jpp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[7] != m && p[4] != m) return true; + + // edge 9 + coord.reset(i, jp, k); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[4] != m) return true; + + // edge 10 + coord.reset(ipp, jp, k); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[1] != m && p[5] != m) return true; + + // edge 11 + coord.reset(ipp, jp, kpp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[2] != m && p[6] != m) return true; + + + // edge 12 + coord.reset(i, jp, kpp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[3] != m && p[7] != m) return true; + + + // Evaluate faces + + // face 1 + coord.reset(ip, jp, k); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[1] != m && p[4] != m && p[5] != m) return true; + + // face 2 + coord.reset(ipp, jp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[1] != m && p[2] != m && p[5] != m && p[6] != m) return true; + + // face 3 + coord.reset(ip, jp, kpp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[2] != m && p[3] != m && p[6] != m && p[7] != m) return true; + + // face 4 + coord.reset(i, jp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[3] != m && p[4] != m && p[7] != m) return true; + + // face 5 + coord.reset(ip, j, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[1] != m && p[2] != m && p[3] != m) return true; + + // face 6 + coord.reset(ip, jpp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[4] != m && p[5] != m && p[6] != m && p[7] != m) return true; + + // test cube center + coord.reset(ip, jp, kp); + m = isInsideValue(accessor.getValue(coord), isovalue); + if (p[0] != m && p[1] != m && p[2] != m && p[3] != m && + p[4] != m && p[5] != m && p[6] != m && p[7] != m) return true; + + return false; +} + + +//////////////////////////////////////// + + +template +inline void +mergeVoxels(LeafType& leaf, const Coord& start, int dim, int regionId) +{ + Coord ijk, end = start; + end[0] += dim; + end[1] += dim; + end[2] += dim; + + for (ijk[0] = start[0]; ijk[0] < end[0]; ++ijk[0]) { + for (ijk[1] = start[1]; ijk[1] < end[1]; ++ijk[1]) { + for (ijk[2] = start[2]; ijk[2] < end[2]; ++ijk[2]) { + leaf.setValueOnly(ijk, regionId); + } + } + } +} + + +// Note that we must use ValueType::value_type or else Visual C++ gets confused +// thinking that it is a constructor. +template +inline bool +isMergable(LeafType& leaf, const Coord& start, int dim, + typename LeafType::ValueType::value_type adaptivity) +{ + if (adaptivity < 1e-6) return false; + + using VecT = typename LeafType::ValueType; + Coord ijk, end = start; + end[0] += dim; + end[1] += dim; + end[2] += dim; + + std::vector norms; + for (ijk[0] = start[0]; ijk[0] < end[0]; ++ijk[0]) { + for (ijk[1] = start[1]; ijk[1] < end[1]; ++ijk[1]) { + for (ijk[2] = start[2]; ijk[2] < end[2]; ++ijk[2]) { + + if(!leaf.isValueOn(ijk)) continue; + norms.push_back(leaf.getValue(ijk)); + } + } + } + + size_t N = norms.size(); + for (size_t ni = 0; ni < N; ++ni) { + VecT n_i = norms[ni]; + for (size_t nj = 0; nj < N; ++nj) { + VecT n_j = norms[nj]; + if ((1.0 - n_i.dot(n_j)) > adaptivity) return false; + } + } + return true; +} + + +//////////////////////////////////////// + + +/// linear interpolation. +inline double evalZeroCrossing(double v0, double v1, double iso) { return (iso - v0) / (v1 - v0); } + + +/// @brief Extracts the eight corner values for leaf inclusive cells. +template +inline void +collectCornerValues(const LeafT& leaf, const Index offset, std::vector& values) +{ + values[0] = double(leaf.getValue(offset)); // i, j, k + values[3] = double(leaf.getValue(offset + 1)); // i, j, k+1 + values[4] = double(leaf.getValue(offset + LeafT::DIM)); // i, j+1, k + values[7] = double(leaf.getValue(offset + LeafT::DIM + 1)); // i, j+1, k+1 + values[1] = double(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM))); // i+1, j, k + values[2] = double(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + 1)); // i+1, j, k+1 + values[5] = double(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM)); // i+1, j+1, k + values[6] = double(leaf.getValue(offset + (LeafT::DIM * LeafT::DIM) + LeafT::DIM + 1)); // i+1, j+1, k+1 +} + + +/// @brief Extracts the eight corner values for a cell starting at the given @ijk coordinate. +template +inline void +collectCornerValues(const AccessorT& acc, const Coord& ijk, std::vector& values) +{ + Coord coord = ijk; + values[0] = double(acc.getValue(coord)); // i, j, k + + coord[0] += 1; + values[1] = double(acc.getValue(coord)); // i+1, j, k + + coord[2] += 1; + values[2] = double(acc.getValue(coord)); // i+i, j, k+1 + + coord[0] = ijk[0]; + values[3] = double(acc.getValue(coord)); // i, j, k+1 + + coord[1] += 1; coord[2] = ijk[2]; + values[4] = double(acc.getValue(coord)); // i, j+1, k + + coord[0] += 1; + values[5] = double(acc.getValue(coord)); // i+1, j+1, k + + coord[2] += 1; + values[6] = double(acc.getValue(coord)); // i+1, j+1, k+1 + + coord[0] = ijk[0]; + values[7] = double(acc.getValue(coord)); // i, j+1, k+1 +} + + +/// @brief Computes the average cell point for a given edge group. +inline Vec3d +computePoint(const std::vector& values, unsigned char signs, + unsigned char edgeGroup, double iso) +{ + Vec3d avg(0.0, 0.0, 0.0); + int samples = 0; + + if (sEdgeGroupTable[signs][1] == edgeGroup) { // Edged: 0 - 1 + avg[0] += evalZeroCrossing(values[0], values[1], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][2] == edgeGroup) { // Edged: 1 - 2 + avg[0] += 1.0; + avg[2] += evalZeroCrossing(values[1], values[2], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][3] == edgeGroup) { // Edged: 3 - 2 + avg[0] += evalZeroCrossing(values[3], values[2], iso); + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][4] == edgeGroup) { // Edged: 0 - 3 + avg[2] += evalZeroCrossing(values[0], values[3], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][5] == edgeGroup) { // Edged: 4 - 5 + avg[0] += evalZeroCrossing(values[4], values[5], iso); + avg[1] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][6] == edgeGroup) { // Edged: 5 - 6 + avg[0] += 1.0; + avg[1] += 1.0; + avg[2] += evalZeroCrossing(values[5], values[6], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][7] == edgeGroup) { // Edged: 7 - 6 + avg[0] += evalZeroCrossing(values[7], values[6], iso); + avg[1] += 1.0; + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][8] == edgeGroup) { // Edged: 4 - 7 + avg[1] += 1.0; + avg[2] += evalZeroCrossing(values[4], values[7], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][9] == edgeGroup) { // Edged: 0 - 4 + avg[1] += evalZeroCrossing(values[0], values[4], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][10] == edgeGroup) { // Edged: 1 - 5 + avg[0] += 1.0; + avg[1] += evalZeroCrossing(values[1], values[5], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][11] == edgeGroup) { // Edged: 2 - 6 + avg[0] += 1.0; + avg[1] += evalZeroCrossing(values[2], values[6], iso); + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][12] == edgeGroup) { // Edged: 3 - 7 + avg[1] += evalZeroCrossing(values[3], values[7], iso); + avg[2] += 1.0; + ++samples; + } + + if (samples > 1) { + double w = 1.0 / double(samples); + avg[0] *= w; + avg[1] *= w; + avg[2] *= w; + } + + return avg; +} + + +/// @brief Computes the average cell point for a given edge group, ignoring edge +/// samples present in the @c signsMask configuration. +inline int +computeMaskedPoint(Vec3d& avg, const std::vector& values, unsigned char signs, + unsigned char signsMask, unsigned char edgeGroup, double iso) +{ + avg = Vec3d(0.0, 0.0, 0.0); + int samples = 0; + + if (sEdgeGroupTable[signs][1] == edgeGroup + && sEdgeGroupTable[signsMask][1] == 0) { // Edged: 0 - 1 + avg[0] += evalZeroCrossing(values[0], values[1], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][2] == edgeGroup + && sEdgeGroupTable[signsMask][2] == 0) { // Edged: 1 - 2 + avg[0] += 1.0; + avg[2] += evalZeroCrossing(values[1], values[2], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][3] == edgeGroup + && sEdgeGroupTable[signsMask][3] == 0) { // Edged: 3 - 2 + avg[0] += evalZeroCrossing(values[3], values[2], iso); + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][4] == edgeGroup + && sEdgeGroupTable[signsMask][4] == 0) { // Edged: 0 - 3 + avg[2] += evalZeroCrossing(values[0], values[3], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][5] == edgeGroup + && sEdgeGroupTable[signsMask][5] == 0) { // Edged: 4 - 5 + avg[0] += evalZeroCrossing(values[4], values[5], iso); + avg[1] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][6] == edgeGroup + && sEdgeGroupTable[signsMask][6] == 0) { // Edged: 5 - 6 + avg[0] += 1.0; + avg[1] += 1.0; + avg[2] += evalZeroCrossing(values[5], values[6], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][7] == edgeGroup + && sEdgeGroupTable[signsMask][7] == 0) { // Edged: 7 - 6 + avg[0] += evalZeroCrossing(values[7], values[6], iso); + avg[1] += 1.0; + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][8] == edgeGroup + && sEdgeGroupTable[signsMask][8] == 0) { // Edged: 4 - 7 + avg[1] += 1.0; + avg[2] += evalZeroCrossing(values[4], values[7], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][9] == edgeGroup + && sEdgeGroupTable[signsMask][9] == 0) { // Edged: 0 - 4 + avg[1] += evalZeroCrossing(values[0], values[4], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][10] == edgeGroup + && sEdgeGroupTable[signsMask][10] == 0) { // Edged: 1 - 5 + avg[0] += 1.0; + avg[1] += evalZeroCrossing(values[1], values[5], iso); + ++samples; + } + + if (sEdgeGroupTable[signs][11] == edgeGroup + && sEdgeGroupTable[signsMask][11] == 0) { // Edged: 2 - 6 + avg[0] += 1.0; + avg[1] += evalZeroCrossing(values[2], values[6], iso); + avg[2] += 1.0; + ++samples; + } + + if (sEdgeGroupTable[signs][12] == edgeGroup + && sEdgeGroupTable[signsMask][12] == 0) { // Edged: 3 - 7 + avg[1] += evalZeroCrossing(values[3], values[7], iso); + avg[2] += 1.0; + ++samples; + } + + if (samples > 1) { + double w = 1.0 / double(samples); + avg[0] *= w; + avg[1] *= w; + avg[2] *= w; + } + + return samples; +} + + +/// @brief Computes the average cell point for a given edge group, by computing +/// convex weights based on the distance from the sample point @c p. +inline Vec3d +computeWeightedPoint(const Vec3d& p, const std::vector& values, + unsigned char signs, unsigned char edgeGroup, double iso) +{ + std::vector samples; + samples.reserve(8); + + std::vector weights; + weights.reserve(8); + + Vec3d avg(0.0, 0.0, 0.0); + + if (sEdgeGroupTable[signs][1] == edgeGroup) { // Edged: 0 - 1 + avg[0] = evalZeroCrossing(values[0], values[1], iso); + avg[1] = 0.0; + avg[2] = 0.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][2] == edgeGroup) { // Edged: 1 - 2 + avg[0] = 1.0; + avg[1] = 0.0; + avg[2] = evalZeroCrossing(values[1], values[2], iso); + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][3] == edgeGroup) { // Edged: 3 - 2 + avg[0] = evalZeroCrossing(values[3], values[2], iso); + avg[1] = 0.0; + avg[2] = 1.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][4] == edgeGroup) { // Edged: 0 - 3 + avg[0] = 0.0; + avg[1] = 0.0; + avg[2] = evalZeroCrossing(values[0], values[3], iso); + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][5] == edgeGroup) { // Edged: 4 - 5 + avg[0] = evalZeroCrossing(values[4], values[5], iso); + avg[1] = 1.0; + avg[2] = 0.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][6] == edgeGroup) { // Edged: 5 - 6 + avg[0] = 1.0; + avg[1] = 1.0; + avg[2] = evalZeroCrossing(values[5], values[6], iso); + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][7] == edgeGroup) { // Edged: 7 - 6 + avg[0] = evalZeroCrossing(values[7], values[6], iso); + avg[1] = 1.0; + avg[2] = 1.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][8] == edgeGroup) { // Edged: 4 - 7 + avg[0] = 0.0; + avg[1] = 1.0; + avg[2] = evalZeroCrossing(values[4], values[7], iso); + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][9] == edgeGroup) { // Edged: 0 - 4 + avg[0] = 0.0; + avg[1] = evalZeroCrossing(values[0], values[4], iso); + avg[2] = 0.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][10] == edgeGroup) { // Edged: 1 - 5 + avg[0] = 1.0; + avg[1] = evalZeroCrossing(values[1], values[5], iso); + avg[2] = 0.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][11] == edgeGroup) { // Edged: 2 - 6 + avg[0] = 1.0; + avg[1] = evalZeroCrossing(values[2], values[6], iso); + avg[2] = 1.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + if (sEdgeGroupTable[signs][12] == edgeGroup) { // Edged: 3 - 7 + avg[0] = 0.0; + avg[1] = evalZeroCrossing(values[3], values[7], iso); + avg[2] = 1.0; + + samples.push_back(avg); + weights.push_back((avg-p).lengthSqr()); + } + + + double minWeight = std::numeric_limits::max(); + double maxWeight = -std::numeric_limits::max(); + + for (size_t i = 0, I = weights.size(); i < I; ++i) { + minWeight = std::min(minWeight, weights[i]); + maxWeight = std::max(maxWeight, weights[i]); + } + + const double offset = maxWeight + minWeight * 0.1; + for (size_t i = 0, I = weights.size(); i < I; ++i) { + weights[i] = offset - weights[i]; + } + + + double weightSum = 0.0; + for (size_t i = 0, I = weights.size(); i < I; ++i) { + weightSum += weights[i]; + } + + avg[0] = 0.0; + avg[1] = 0.0; + avg[2] = 0.0; + + if (samples.size() > 1) { + for (size_t i = 0, I = samples.size(); i < I; ++i) { + avg += samples[i] * (weights[i] / weightSum); + } + } else { + avg = samples.front(); + } + + return avg; +} + + +/// @brief Computes the average cell points defined by the sign configuration +/// @c signs and the given corner values @c values. +inline void +computeCellPoints(std::vector& points, + const std::vector& values, unsigned char signs, double iso) +{ + for (size_t n = 1, N = sEdgeGroupTable[signs][0] + 1; n < N; ++n) { + points.push_back(computePoint(values, signs, uint8_t(n), iso)); + } +} + + +/// @brief Given a sign configuration @c lhsSigns and an edge group @c groupId, +/// finds the corresponding edge group in a different sign configuration +/// @c rhsSigns. Returns -1 if no match is found. +inline int +matchEdgeGroup(unsigned char groupId, unsigned char lhsSigns, unsigned char rhsSigns) +{ + int id = -1; + for (size_t i = 1; i <= 12; ++i) { + if (sEdgeGroupTable[lhsSigns][i] == groupId && sEdgeGroupTable[rhsSigns][i] != 0) { + id = sEdgeGroupTable[rhsSigns][i]; + break; + } + } + return id; +} + + +/// @brief Computes the average cell points defined by the sign configuration +/// @c signs and the given corner values @c values. Combines data from +/// two different level sets to eliminate seam lines when meshing +/// fractured segments. +inline void +computeCellPoints(std::vector& points, std::vector& weightedPointMask, + const std::vector& lhsValues, const std::vector& rhsValues, + unsigned char lhsSigns, unsigned char rhsSigns, + double iso, size_t pointIdx, const uint32_t * seamPointArray) +{ + for (size_t n = 1, N = sEdgeGroupTable[lhsSigns][0] + 1; n < N; ++n) { + + int id = matchEdgeGroup(uint8_t(n), lhsSigns, rhsSigns); + + if (id != -1) { + + const unsigned char e = uint8_t(id); + const uint32_t& quantizedPoint = seamPointArray[pointIdx + (id - 1)]; + + if ((quantizedPoint & MASK_DIRTY_BIT) && !(quantizedPoint & MASK_INVALID_BIT)) { + Vec3d p = unpackPoint(quantizedPoint); + points.push_back(computeWeightedPoint(p, rhsValues, rhsSigns, e, iso)); + weightedPointMask.push_back(true); + } else { + points.push_back(computePoint(rhsValues, rhsSigns, e, iso)); + weightedPointMask.push_back(false); + } + + } else { + points.push_back(computePoint(lhsValues, lhsSigns, uint8_t(n), iso)); + weightedPointMask.push_back(false); + } + } +} + + +template +struct ComputePoints +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using Int16TreeType = typename InputTreeType::template ValueConverter::Type; + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + + using Index32TreeType = typename InputTreeType::template ValueConverter::Type; + using Index32LeafNodeType = typename Index32TreeType::LeafNodeType; + + ComputePoints(Vec3s * pointArray, + const InputTreeType& inputTree, + const std::vector& pointIndexLeafNodes, + const std::vector& signFlagsLeafNodes, + const std::unique_ptr& leafNodeOffsets, + const math::Transform& xform, + double iso); + + void setRefData(const InputTreeType& refInputTree, + const Index32TreeType& refPointIndexTree, + const Int16TreeType& refSignFlagsTree, + const uint32_t * quantizedSeamLinePoints, + uint8_t * seamLinePointsFlags); + + void operator()(const tbb::blocked_range&) const; + +private: + Vec3s * const mPoints; + InputTreeType const * const mInputTree; + Index32LeafNodeType * const * const mPointIndexNodes; + Int16LeafNodeType const * const * const mSignFlagsNodes; + Index32 const * const mNodeOffsets; + math::Transform const mTransform; + double const mIsovalue; + // reference meshing data + InputTreeType const * mRefInputTree; + Index32TreeType const * mRefPointIndexTree; + Int16TreeType const * mRefSignFlagsTree; + uint32_t const * mQuantizedSeamLinePoints; + uint8_t * mSeamLinePointsFlags; +}; // struct ComputePoints + + +template +ComputePoints::ComputePoints( + Vec3s * pointArray, + const InputTreeType& inputTree, + const std::vector& pointIndexLeafNodes, + const std::vector& signFlagsLeafNodes, + const std::unique_ptr& leafNodeOffsets, + const math::Transform& xform, + double iso) + : mPoints(pointArray) + , mInputTree(&inputTree) + , mPointIndexNodes(pointIndexLeafNodes.empty() ? nullptr : &pointIndexLeafNodes.front()) + , mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mNodeOffsets(leafNodeOffsets.get()) + , mTransform(xform) + , mIsovalue(iso) + , mRefInputTree(nullptr) + , mRefPointIndexTree(nullptr) + , mRefSignFlagsTree(nullptr) + , mQuantizedSeamLinePoints(nullptr) + , mSeamLinePointsFlags(nullptr) +{ +} + +template +void +ComputePoints::setRefData( + const InputTreeType& refInputTree, + const Index32TreeType& refPointIndexTree, + const Int16TreeType& refSignFlagsTree, + const uint32_t * quantizedSeamLinePoints, + uint8_t * seamLinePointsFlags) +{ + mRefInputTree = &refInputTree; + mRefPointIndexTree = &refPointIndexTree; + mRefSignFlagsTree = &refSignFlagsTree; + mQuantizedSeamLinePoints = quantizedSeamLinePoints; + mSeamLinePointsFlags = seamLinePointsFlags; +} + +template +void +ComputePoints::operator()(const tbb::blocked_range& range) const +{ + using InputTreeAccessor = tree::ValueAccessor; + using Index32TreeAccessor = tree::ValueAccessor; + using Int16TreeAccessor = tree::ValueAccessor; + + using IndexType = typename Index32TreeType::ValueType; + + using IndexArray = std::vector; + using IndexArrayMap = std::map; + + InputTreeAccessor inputAcc(*mInputTree); + + Vec3d xyz; + Coord ijk; + std::vector points(4); + std::vector weightedPointMask(4); + std::vector values(8), refValues(8); + const double iso = mIsovalue; + + // reference data accessors + + std::unique_ptr refInputAcc; + std::unique_ptr refPointIndexAcc; + std::unique_ptr refSignFlagsAcc; + + const bool hasReferenceData = mRefInputTree && mRefPointIndexTree && mRefSignFlagsTree; + + if (hasReferenceData) { + refInputAcc.reset(new InputTreeAccessor(*mRefInputTree)); + refPointIndexAcc.reset(new Index32TreeAccessor(*mRefPointIndexTree)); + refSignFlagsAcc.reset(new Int16TreeAccessor(*mRefSignFlagsTree)); + } + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + Index32LeafNodeType& pointIndexNode = *mPointIndexNodes[n]; + const Coord& origin = pointIndexNode.origin(); + + const Int16LeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + const InputLeafNodeType * inputNode = inputAcc.probeConstLeaf(origin); + + // get reference data + const InputLeafNodeType * refInputNode = nullptr; + const Index32LeafNodeType * refPointIndexNode = nullptr; + const Int16LeafNodeType * refSignFlagsNode = nullptr; + + if (hasReferenceData) { + refInputNode = refInputAcc->probeConstLeaf(origin); + refPointIndexNode = refPointIndexAcc->probeConstLeaf(origin); + refSignFlagsNode = refSignFlagsAcc->probeConstLeaf(origin); + } + + IndexType pointOffset = IndexType(mNodeOffsets[n]); + IndexArrayMap regions; + + for (auto it = pointIndexNode.beginValueOn(); it; ++it) { + const Index offset = it.pos(); + + const IndexType id = it.getValue(); + if (id != 0) { + if (id != IndexType(util::INVALID_IDX)) { + regions[id].push_back(offset); + } + continue; + } + + pointIndexNode.setValueOnly(offset, pointOffset); + + const Int16 flags = signFlagsNode.getValue(offset); + uint8_t signs = uint8_t(SIGNS & flags); + uint8_t refSigns = 0; + + if ((flags & SEAM) && refPointIndexNode && refSignFlagsNode) { + if (refSignFlagsNode->isValueOn(offset)) { + refSigns = uint8_t(SIGNS & refSignFlagsNode->getValue(offset)); + } + } + + ijk = Index32LeafNodeType::offsetToLocalCoord(offset); + + const bool inclusiveCell = inputNode && + ijk[0] < int(Index32LeafNodeType::DIM - 1) && + ijk[1] < int(Index32LeafNodeType::DIM - 1) && + ijk[2] < int(Index32LeafNodeType::DIM - 1); + + ijk += origin; + + if (inclusiveCell) collectCornerValues(*inputNode, offset, values); + else collectCornerValues(inputAcc, ijk, values); + + points.clear(); + weightedPointMask.clear(); + + if (refSigns == 0) { + + computeCellPoints(points, values, signs, iso); + + } else { + if (inclusiveCell && refInputNode) { + collectCornerValues(*refInputNode, offset, refValues); + } else { + collectCornerValues(*refInputAcc, ijk, refValues); + } + computeCellPoints(points, weightedPointMask, values, refValues, signs, refSigns, + iso, refPointIndexNode->getValue(offset), mQuantizedSeamLinePoints); + } + + xyz[0] = double(ijk[0]); + xyz[1] = double(ijk[1]); + xyz[2] = double(ijk[2]); + + for (size_t i = 0, I = points.size(); i < I; ++i) { + + Vec3d& point = points[i]; + + // Checks for both NaN and inf vertex positions, i.e. any value that is not finite. + if (!std::isfinite(point[0]) || + !std::isfinite(point[1]) || + !std::isfinite(point[2])) + { + OPENVDB_THROW(ValueError, + "VolumeToMesh encountered NaNs or infs in the input VDB!" + " Hint: Check the input and consider using the \"Diagnostics\" tool " + "to detect and resolve the NaNs."); + } + + point += xyz; + point = mTransform.indexToWorld(point); + + Vec3s& pos = mPoints[pointOffset]; + pos[0] = float(point[0]); + pos[1] = float(point[1]); + pos[2] = float(point[2]); + + if (mSeamLinePointsFlags && !weightedPointMask.empty() && weightedPointMask[i]) { + mSeamLinePointsFlags[pointOffset] = uint8_t(1); + } + + ++pointOffset; + } + } + + // generate collapsed region points + for (typename IndexArrayMap::iterator it = regions.begin(); it != regions.end(); ++it) { + + Vec3d avg(0.0), point(0.0); + int count = 0; + + const IndexArray& voxels = it->second; + for (size_t i = 0, I = voxels.size(); i < I; ++i) { + + const Index offset = voxels[i]; + ijk = Index32LeafNodeType::offsetToLocalCoord(offset); + + const bool inclusiveCell = inputNode && + ijk[0] < int(Index32LeafNodeType::DIM - 1) && + ijk[1] < int(Index32LeafNodeType::DIM - 1) && + ijk[2] < int(Index32LeafNodeType::DIM - 1); + + ijk += origin; + + pointIndexNode.setValueOnly(offset, pointOffset); + + uint8_t signs = uint8_t(SIGNS & signFlagsNode.getValue(offset)); + + if (inclusiveCell) collectCornerValues(*inputNode, offset, values); + else collectCornerValues(inputAcc, ijk, values); + + points.clear(); + computeCellPoints(points, values, signs, iso); + + avg[0] += double(ijk[0]) + points[0][0]; + avg[1] += double(ijk[1]) + points[0][1]; + avg[2] += double(ijk[2]) + points[0][2]; + + ++count; + } + + if (count > 1) { + double w = 1.0 / double(count); + avg[0] *= w; + avg[1] *= w; + avg[2] *= w; + } + + avg = mTransform.indexToWorld(avg); + + Vec3s& pos = mPoints[pointOffset]; + pos[0] = float(avg[0]); + pos[1] = float(avg[1]); + pos[2] = float(avg[2]); + + ++pointOffset; + } + } +} // ComputePoints::operator() + + +//////////////////////////////////////// + + +template +struct SeamLineWeights +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using Int16TreeType = typename InputTreeType::template ValueConverter::Type; + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + + using Index32TreeType = typename InputTreeType::template ValueConverter::Type; + using Index32LeafNodeType = typename Index32TreeType::LeafNodeType; + + SeamLineWeights(const std::vector& signFlagsLeafNodes, + const InputTreeType& inputTree, + const Index32TreeType& refPointIndexTree, + const Int16TreeType& refSignFlagsTree, + uint32_t * quantizedPoints, + InputValueType iso) + : mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mInputTree(&inputTree) + , mRefPointIndexTree(&refPointIndexTree) + , mRefSignFlagsTree(&refSignFlagsTree) + , mQuantizedPoints(quantizedPoints) + , mIsovalue(iso) + { + } + + void operator()(const tbb::blocked_range& range) const + { + tree::ValueAccessor inputTreeAcc(*mInputTree); + tree::ValueAccessor pointIndexTreeAcc(*mRefPointIndexTree); + tree::ValueAccessor signFlagsTreeAcc(*mRefSignFlagsTree); + + std::vector values(8); + const double iso = double(mIsovalue); + Coord ijk; + Vec3d pos; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const Int16LeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + const Coord& origin = signFlagsNode.origin(); + + const Int16LeafNodeType * refSignNode = signFlagsTreeAcc.probeConstLeaf(origin); + if (!refSignNode) continue; + + const Index32LeafNodeType* refPointIndexNode = + pointIndexTreeAcc.probeConstLeaf(origin); + if (!refPointIndexNode) continue; + + const InputLeafNodeType * inputNode = inputTreeAcc.probeConstLeaf(origin); + + for (typename Int16LeafNodeType::ValueOnCIter it = signFlagsNode.cbeginValueOn(); + it; ++it) + { + const Index offset = it.pos(); + + ijk = Index32LeafNodeType::offsetToLocalCoord(offset); + + const bool inclusiveCell = inputNode && + ijk[0] < int(Index32LeafNodeType::DIM - 1) && + ijk[1] < int(Index32LeafNodeType::DIM - 1) && + ijk[2] < int(Index32LeafNodeType::DIM - 1); + + ijk += origin; + + if ((it.getValue() & SEAM) && refSignNode->isValueOn(offset)) { + + uint8_t lhsSigns = uint8_t(SIGNS & it.getValue()); + uint8_t rhsSigns = uint8_t(SIGNS & refSignNode->getValue(offset)); + + + if (inclusiveCell) { + collectCornerValues(*inputNode, offset, values); + } else { + collectCornerValues(inputTreeAcc, ijk, values); + } + + + for (unsigned i = 1, I = sEdgeGroupTable[lhsSigns][0] + 1; i < I; ++i) { + + int id = matchEdgeGroup(uint8_t(i), lhsSigns, rhsSigns); + + if (id != -1) { + + uint32_t& data = mQuantizedPoints[ + refPointIndexNode->getValue(offset) + (id - 1)]; + + if (!(data & MASK_DIRTY_BIT)) { + + int smaples = computeMaskedPoint( + pos, values, lhsSigns, rhsSigns, uint8_t(i), iso); + + if (smaples > 0) data = packPoint(pos); + else data = MASK_INVALID_BIT; + + data |= MASK_DIRTY_BIT; + } + } + } // end point group loop + } + + } // end value on loop + + } // end leaf node loop + } + +private: + Int16LeafNodeType const * const * const mSignFlagsNodes; + InputTreeType const * const mInputTree; + Index32TreeType const * const mRefPointIndexTree; + Int16TreeType const * const mRefSignFlagsTree; + uint32_t * const mQuantizedPoints; + InputValueType const mIsovalue; +}; // struct SeamLineWeights + + +template +struct SetSeamLineFlags +{ + using LeafNodeType = typename TreeType::LeafNodeType; + + SetSeamLineFlags(const std::vector& signFlagsLeafNodes, + const TreeType& refSignFlagsTree) + : mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mRefSignFlagsTree(&refSignFlagsTree) + { + } + + void operator()(const tbb::blocked_range& range) const + { + tree::ValueAccessor refSignFlagsTreeAcc(*mRefSignFlagsTree); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + LeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + const Coord& origin = signFlagsNode.origin(); + + const LeafNodeType * refSignNode = refSignFlagsTreeAcc.probeConstLeaf(origin); + if (!refSignNode) continue; + + for (auto it = signFlagsNode.cbeginValueOn(); it; ++it) { + const Index offset = it.pos(); + + uint8_t rhsSigns = uint8_t(refSignNode->getValue(offset) & SIGNS); + + if (sEdgeGroupTable[rhsSigns][0] > 0) { + + const typename LeafNodeType::ValueType value = it.getValue(); + uint8_t lhsSigns = uint8_t(value & SIGNS); + + if (rhsSigns != lhsSigns) { + signFlagsNode.setValueOnly(offset, value | SEAM); + } + } + + } // end value on loop + + } // end leaf node loop + } + +private: + LeafNodeType * const * const mSignFlagsNodes; + TreeType const * const mRefSignFlagsTree; +}; // struct SetSeamLineFlags + + +template +struct TransferSeamLineFlags +{ + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + using SignDataTreeType = typename BoolTreeType::template ValueConverter::Type; + using SignDataLeafNodeType = typename SignDataTreeType::LeafNodeType; + + TransferSeamLineFlags(const std::vector& signFlagsLeafNodes, + const BoolTreeType& maskTree) + : mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mMaskTree(&maskTree) + { + } + + void operator()(const tbb::blocked_range& range) const + { + tree::ValueAccessor maskAcc(*mMaskTree); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + SignDataLeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + const Coord& origin = signFlagsNode.origin(); + + const BoolLeafNodeType * maskNode = maskAcc.probeConstLeaf(origin); + if (!maskNode) continue; + + using ValueOnCIter = typename SignDataLeafNodeType::ValueOnCIter; + + for (ValueOnCIter it = signFlagsNode.cbeginValueOn(); it; ++it) { + const Index offset = it.pos(); + + if (maskNode->isValueOn(offset)) { + signFlagsNode.setValueOnly(offset, it.getValue() | SEAM); + } + + } // end value on loop + + } // end leaf node loop + } + +private: + SignDataLeafNodeType * const * const mSignFlagsNodes; + BoolTreeType const * const mMaskTree; +}; // struct TransferSeamLineFlags + + +template +struct MaskSeamLineVoxels +{ + using LeafNodeType = typename TreeType::LeafNodeType; + using BoolTreeType = typename TreeType::template ValueConverter::Type; + + MaskSeamLineVoxels(const std::vector& signFlagsLeafNodes, + const TreeType& signFlagsTree, + BoolTreeType& mask) + : mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mSignFlagsTree(&signFlagsTree) + , mTempMask(false) + , mMask(&mask) + { + } + + MaskSeamLineVoxels(MaskSeamLineVoxels& rhs, tbb::split) + : mSignFlagsNodes(rhs.mSignFlagsNodes) + , mSignFlagsTree(rhs.mSignFlagsTree) + , mTempMask(false) + , mMask(&mTempMask) + { + } + + void join(MaskSeamLineVoxels& rhs) { mMask->merge(*rhs.mMask); } + + void operator()(const tbb::blocked_range& range) + { + using ValueOnCIter = typename LeafNodeType::ValueOnCIter; + using ValueType = typename LeafNodeType::ValueType; + + tree::ValueAccessor signFlagsAcc(*mSignFlagsTree); + tree::ValueAccessor maskAcc(*mMask); + Coord ijk(0, 0, 0); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + LeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + + + for (ValueOnCIter it = signFlagsNode.cbeginValueOn(); it; ++it) { + + const ValueType flags = it.getValue(); + + if (!(flags & SEAM) && (flags & EDGES)) { + + ijk = it.getCoord(); + + bool isSeamLineVoxel = false; + + if (flags & XEDGE) { + ijk[1] -= 1; + isSeamLineVoxel = (signFlagsAcc.getValue(ijk) & SEAM); + ijk[2] -= 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[1] += 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[2] += 1; + } + + if (!isSeamLineVoxel && flags & YEDGE) { + ijk[2] -= 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[0] -= 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[2] += 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[0] += 1; + } + + if (!isSeamLineVoxel && flags & ZEDGE) { + ijk[1] -= 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[0] -= 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[1] += 1; + isSeamLineVoxel = isSeamLineVoxel || (signFlagsAcc.getValue(ijk) & SEAM); + ijk[0] += 1; + } + + if (isSeamLineVoxel) { + maskAcc.setValue(it.getCoord(), true); + } + } + } // end value on loop + + } // end leaf node loop + } + +private: + LeafNodeType * const * const mSignFlagsNodes; + TreeType const * const mSignFlagsTree; + BoolTreeType mTempMask; + BoolTreeType * const mMask; +}; // struct MaskSeamLineVoxels + + +template +inline void +markSeamLineData(SignDataTreeType& signFlagsTree, const SignDataTreeType& refSignFlagsTree) +{ + using SignDataType = typename SignDataTreeType::ValueType; + using SignDataLeafNodeType = typename SignDataTreeType::LeafNodeType; + using BoolTreeType = typename SignDataTreeType::template ValueConverter::Type; + + std::vector signFlagsLeafNodes; + signFlagsTree.getNodes(signFlagsLeafNodes); + + const tbb::blocked_range nodeRange(0, signFlagsLeafNodes.size()); + + tbb::parallel_for(nodeRange, + SetSeamLineFlags(signFlagsLeafNodes, refSignFlagsTree)); + + BoolTreeType seamLineMaskTree(false); + + MaskSeamLineVoxels + maskSeamLine(signFlagsLeafNodes, signFlagsTree, seamLineMaskTree); + + tbb::parallel_reduce(nodeRange, maskSeamLine); + + tbb::parallel_for(nodeRange, + TransferSeamLineFlags(signFlagsLeafNodes, seamLineMaskTree)); +} + + +//////////////////////////////////////// + + +template +struct MergeVoxelRegions +{ + using InputTreeType = typename InputGridType::TreeType; + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using FloatTreeType = typename InputTreeType::template ValueConverter::Type; + using FloatLeafNodeType = typename FloatTreeType::LeafNodeType; + using FloatGridType = Grid; + + using Int16TreeType = typename InputTreeType::template ValueConverter::Type; + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + + using Index32TreeType = typename InputTreeType::template ValueConverter::Type; + using Index32LeafNodeType = typename Index32TreeType::LeafNodeType; + + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MergeVoxelRegions(const InputGridType& inputGrid, + const Index32TreeType& pointIndexTree, + const std::vector& pointIndexLeafNodes, + const std::vector& signFlagsLeafNodes, + InputValueType iso, + float adaptivity, + bool invertSurfaceOrientation); + + void setSpatialAdaptivity(const FloatGridType& grid) + { + mSpatialAdaptivityTree = &grid.tree(); + mSpatialAdaptivityTransform = &grid.transform(); + } + + void setAdaptivityMask(const BoolTreeType& mask) + { + mMaskTree = &mask; + } + + void setRefSignFlagsData(const Int16TreeType& signFlagsData, float internalAdaptivity) + { + mRefSignFlagsTree = &signFlagsData; + mInternalAdaptivity = internalAdaptivity; + } + + void operator()(const tbb::blocked_range&) const; + +private: + InputTreeType const * const mInputTree; + math::Transform const * const mInputTransform; + + Index32TreeType const * const mPointIndexTree; + Index32LeafNodeType * const * const mPointIndexNodes; + Int16LeafNodeType const * const * const mSignFlagsNodes; + + InputValueType mIsovalue; + float mSurfaceAdaptivity, mInternalAdaptivity; + bool mInvertSurfaceOrientation; + + FloatTreeType const * mSpatialAdaptivityTree; + BoolTreeType const * mMaskTree; + Int16TreeType const * mRefSignFlagsTree; + math::Transform const * mSpatialAdaptivityTransform; +}; // struct MergeVoxelRegions + + +template +MergeVoxelRegions::MergeVoxelRegions( + const InputGridType& inputGrid, + const Index32TreeType& pointIndexTree, + const std::vector& pointIndexLeafNodes, + const std::vector& signFlagsLeafNodes, + InputValueType iso, + float adaptivity, + bool invertSurfaceOrientation) + : mInputTree(&inputGrid.tree()) + , mInputTransform(&inputGrid.transform()) + , mPointIndexTree(&pointIndexTree) + , mPointIndexNodes(pointIndexLeafNodes.empty() ? nullptr : &pointIndexLeafNodes.front()) + , mSignFlagsNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mIsovalue(iso) + , mSurfaceAdaptivity(adaptivity) + , mInternalAdaptivity(adaptivity) + , mInvertSurfaceOrientation(invertSurfaceOrientation) + , mSpatialAdaptivityTree(nullptr) + , mMaskTree(nullptr) + , mRefSignFlagsTree(nullptr) + , mSpatialAdaptivityTransform(nullptr) +{ +} + + +template +void +MergeVoxelRegions::operator()(const tbb::blocked_range& range) const +{ + using Vec3sType = math::Vec3; + using Vec3sLeafNodeType = typename InputLeafNodeType::template ValueConverter::Type; + + using InputTreeAccessor = tree::ValueAccessor; + using FloatTreeAccessor = tree::ValueAccessor; + using Index32TreeAccessor = tree::ValueAccessor; + using Int16TreeAccessor = tree::ValueAccessor; + using BoolTreeAccessor = tree::ValueAccessor; + + std::unique_ptr spatialAdaptivityAcc; + if (mSpatialAdaptivityTree && mSpatialAdaptivityTransform) { + spatialAdaptivityAcc.reset(new FloatTreeAccessor(*mSpatialAdaptivityTree)); + } + + std::unique_ptr maskAcc; + if (mMaskTree) { + maskAcc.reset(new BoolTreeAccessor(*mMaskTree)); + } + + std::unique_ptr refSignFlagsAcc; + if (mRefSignFlagsTree) { + refSignFlagsAcc.reset(new Int16TreeAccessor(*mRefSignFlagsTree)); + } + + InputTreeAccessor inputAcc(*mInputTree); + Index32TreeAccessor pointIndexAcc(*mPointIndexTree); + + BoolLeafNodeType mask; + + const bool invertGradientDir = mInvertSurfaceOrientation || isBoolValue(); + std::unique_ptr gradientNode; + + Coord ijk, end; + const int LeafDim = InputLeafNodeType::DIM; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + mask.setValuesOff(); + + const Int16LeafNodeType& signFlagsNode = *mSignFlagsNodes[n]; + Index32LeafNodeType& pointIndexNode = *mPointIndexNodes[n]; + + const Coord& origin = pointIndexNode.origin(); + + end[0] = origin[0] + LeafDim; + end[1] = origin[1] + LeafDim; + end[2] = origin[2] + LeafDim; + + // Mask off seam line adjacent voxels + if (maskAcc) { + const BoolLeafNodeType* maskLeaf = maskAcc->probeConstLeaf(origin); + if (maskLeaf != nullptr) { + for (typename BoolLeafNodeType::ValueOnCIter it = maskLeaf->cbeginValueOn(); + it; ++it) + { + mask.setActiveState(it.getCoord() & ~1u, true); + } + } + } + + float adaptivity = (refSignFlagsAcc && !refSignFlagsAcc->probeConstLeaf(origin)) ? + mInternalAdaptivity : mSurfaceAdaptivity; + + bool useGradients = adaptivity < 1.0f; + + // Set region adaptivity + FloatLeafNodeType adaptivityLeaf(origin, adaptivity); + + if (spatialAdaptivityAcc) { + useGradients = false; + for (Index offset = 0; offset < FloatLeafNodeType::NUM_VALUES; ++offset) { + ijk = adaptivityLeaf.offsetToGlobalCoord(offset); + ijk = mSpatialAdaptivityTransform->worldToIndexCellCentered( + mInputTransform->indexToWorld(ijk)); + float weight = spatialAdaptivityAcc->getValue(ijk); + float adaptivityValue = weight * adaptivity; + if (adaptivityValue < 1.0f) useGradients = true; + adaptivityLeaf.setValueOnly(offset, adaptivityValue); + } + } + + // Mask off ambiguous voxels + for (auto it = signFlagsNode.cbeginValueOn(); it; ++it) { + const Int16 flags = it.getValue(); + const unsigned char signs = static_cast(SIGNS & int(flags)); + + if ((flags & SEAM) || !sAdaptable[signs] || sEdgeGroupTable[signs][0] > 1) { + + mask.setActiveState(it.getCoord() & ~1u, true); + + } else if (flags & EDGES) { + + bool maskRegion = false; + + ijk = it.getCoord(); + if (!pointIndexAcc.isValueOn(ijk)) maskRegion = true; + + if (!maskRegion && flags & XEDGE) { + ijk[1] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[2] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[1] += 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[2] += 1; + } + + if (!maskRegion && flags & YEDGE) { + ijk[2] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[0] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[2] += 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[0] += 1; + } + + if (!maskRegion && flags & ZEDGE) { + ijk[1] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[0] -= 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[1] += 1; + if (!maskRegion && !pointIndexAcc.isValueOn(ijk)) maskRegion = true; + ijk[0] += 1; + } + + if (maskRegion) { + mask.setActiveState(it.getCoord() & ~1u, true); + } + } + } + + // Mask off topologically ambiguous 2x2x2 voxel sub-blocks + int dim = 2; + for (ijk[0] = origin[0]; ijk[0] < end[0]; ijk[0] += dim) { + for (ijk[1] = origin[1]; ijk[1] < end[1]; ijk[1] += dim) { + for (ijk[2] = origin[2]; ijk[2] < end[2]; ijk[2] += dim) { + if (!mask.isValueOn(ijk) && isNonManifold(inputAcc, ijk, mIsovalue, dim)) { + mask.setActiveState(ijk, true); + } + } + } + } + + // Compute the gradient for the remaining voxels + + if (useGradients) { + + if (gradientNode) { + gradientNode->setValuesOff(); + } else { + gradientNode.reset(new Vec3sLeafNodeType()); + } + + for (auto it = signFlagsNode.cbeginValueOn(); it; ++it) { + ijk = it.getCoord(); + if (!mask.isValueOn(ijk & ~1u)) { + Vec3sType dir(math::ISGradient::result(inputAcc, ijk)); + dir.normalize(); + + if (invertGradientDir) { + dir = -dir; + } + + gradientNode->setValueOn(it.pos(), dir); + } + } + } + + // Merge regions + int regionId = 1; + for ( ; dim <= LeafDim; dim = dim << 1) { + const unsigned coordMask = ~((dim << 1) - 1); + for (ijk[0] = origin[0]; ijk[0] < end[0]; ijk[0] += dim) { + for (ijk[1] = origin[1]; ijk[1] < end[1]; ijk[1] += dim) { + for (ijk[2] = origin[2]; ijk[2] < end[2]; ijk[2] += dim) { + + adaptivity = adaptivityLeaf.getValue(ijk); + + if (mask.isValueOn(ijk) + || isNonManifold(inputAcc, ijk, mIsovalue, dim) + || (useGradients && !isMergable(*gradientNode, ijk, dim, adaptivity))) + { + mask.setActiveState(ijk & coordMask, true); + } else { + mergeVoxels(pointIndexNode, ijk, dim, regionId++); + } + } + } + } + } + } +} // MergeVoxelRegions::operator() + + +//////////////////////////////////////// + + +// Constructs qudas +struct UniformPrimBuilder +{ + UniformPrimBuilder(): mIdx(0), mPolygonPool(nullptr) {} + + void init(const size_t upperBound, PolygonPool& quadPool) + { + mPolygonPool = &quadPool; + mPolygonPool->resetQuads(upperBound); + mIdx = 0; + } + + template + void addPrim(const math::Vec4& verts, bool reverse, char flags = 0) + { + if (!reverse) { + mPolygonPool->quad(mIdx) = verts; + } else { + Vec4I& quad = mPolygonPool->quad(mIdx); + quad[0] = verts[3]; + quad[1] = verts[2]; + quad[2] = verts[1]; + quad[3] = verts[0]; + } + mPolygonPool->quadFlags(mIdx) = flags; + ++mIdx; + } + + void done() + { + mPolygonPool->trimQuads(mIdx); + } + +private: + size_t mIdx; + PolygonPool* mPolygonPool; +}; + + +// Constructs qudas and triangles +struct AdaptivePrimBuilder +{ + AdaptivePrimBuilder() : mQuadIdx(0), mTriangleIdx(0), mPolygonPool(nullptr) {} + + void init(const size_t upperBound, PolygonPool& polygonPool) + { + mPolygonPool = &polygonPool; + mPolygonPool->resetQuads(upperBound); + mPolygonPool->resetTriangles(upperBound); + + mQuadIdx = 0; + mTriangleIdx = 0; + } + + template + void addPrim(const math::Vec4& verts, bool reverse, char flags = 0) + { + if (verts[0] != verts[1] && verts[0] != verts[2] && verts[0] != verts[3] + && verts[1] != verts[2] && verts[1] != verts[3] && verts[2] != verts[3]) { + mPolygonPool->quadFlags(mQuadIdx) = flags; + addQuad(verts, reverse); + } else if ( + verts[0] == verts[3] && + verts[1] != verts[2] && + verts[1] != verts[0] && + verts[2] != verts[0]) { + mPolygonPool->triangleFlags(mTriangleIdx) = flags; + addTriangle(verts[0], verts[1], verts[2], reverse); + } else if ( + verts[1] == verts[2] && + verts[0] != verts[3] && + verts[0] != verts[1] && + verts[3] != verts[1]) { + mPolygonPool->triangleFlags(mTriangleIdx) = flags; + addTriangle(verts[0], verts[1], verts[3], reverse); + } else if ( + verts[0] == verts[1] && + verts[2] != verts[3] && + verts[2] != verts[0] && + verts[3] != verts[0]) { + mPolygonPool->triangleFlags(mTriangleIdx) = flags; + addTriangle(verts[0], verts[2], verts[3], reverse); + } else if ( + verts[2] == verts[3] && + verts[0] != verts[1] && + verts[0] != verts[2] && + verts[1] != verts[2]) { + mPolygonPool->triangleFlags(mTriangleIdx) = flags; + addTriangle(verts[0], verts[1], verts[2], reverse); + } + } + + + void done() + { + mPolygonPool->trimQuads(mQuadIdx, /*reallocate=*/true); + mPolygonPool->trimTrinagles(mTriangleIdx, /*reallocate=*/true); + } + +private: + + template + void addQuad(const math::Vec4& verts, bool reverse) + { + if (!reverse) { + mPolygonPool->quad(mQuadIdx) = verts; + } else { + Vec4I& quad = mPolygonPool->quad(mQuadIdx); + quad[0] = verts[3]; + quad[1] = verts[2]; + quad[2] = verts[1]; + quad[3] = verts[0]; + } + ++mQuadIdx; + } + + void addTriangle(unsigned v0, unsigned v1, unsigned v2, bool reverse) + { + Vec3I& prim = mPolygonPool->triangle(mTriangleIdx); + + prim[1] = v1; + + if (!reverse) { + prim[0] = v0; + prim[2] = v2; + } else { + prim[0] = v2; + prim[2] = v0; + } + ++mTriangleIdx; + } + + size_t mQuadIdx, mTriangleIdx; + PolygonPool *mPolygonPool; +}; + + +template +inline void +constructPolygons( + bool invertSurfaceOrientation, + Int16 flags, + Int16 refFlags, + const Vec3i& offsets, + const Coord& ijk, + const SignAccT& signAcc, + const IdxAccT& idxAcc, + PrimBuilder& mesher) +{ + using IndexType = typename IdxAccT::ValueType; + + IndexType v0 = IndexType(util::INVALID_IDX); + const bool isActive = idxAcc.probeValue(ijk, v0); + if (isActive == false || v0 == IndexType(util::INVALID_IDX)) return; + + char tag[2]; + tag[0] = (flags & SEAM) ? POLYFLAG_FRACTURE_SEAM : 0; + tag[1] = tag[0] | char(POLYFLAG_EXTERIOR); + + bool isInside = flags & INSIDE; + + isInside = invertSurfaceOrientation ? !isInside : isInside; + + Coord coord = ijk; + math::Vec4 quad(0,0,0,0); + + if (flags & XEDGE) { + + quad[0] = v0 + offsets[0]; + + // i, j-1, k + coord[1]--; + bool activeValues = idxAcc.probeValue(coord, quad[1]); + uint8_t cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[1] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][5] - 1 : 0; + + // i, j-1, k-1 + coord[2]--; + activeValues = activeValues && idxAcc.probeValue(coord, quad[2]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[2] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][7] - 1 : 0; + + // i, j, k-1 + coord[1]++; + activeValues = activeValues && idxAcc.probeValue(coord, quad[3]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[3] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][3] - 1 : 0; + + if (activeValues) { + mesher.addPrim(quad, isInside, tag[bool(refFlags & XEDGE)]); + } + + coord[2]++; // i, j, k + } + + + if (flags & YEDGE) { + + quad[0] = v0 + offsets[1]; + + // i, j, k-1 + coord[2]--; + bool activeValues = idxAcc.probeValue(coord, quad[1]); + uint8_t cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[1] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][12] - 1 : 0; + + // i-1, j, k-1 + coord[0]--; + activeValues = activeValues && idxAcc.probeValue(coord, quad[2]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[2] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][11] - 1 : 0; + + // i-1, j, k + coord[2]++; + activeValues = activeValues && idxAcc.probeValue(coord, quad[3]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[3] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][10] - 1 : 0; + + if (activeValues) { + mesher.addPrim(quad, isInside, tag[bool(refFlags & YEDGE)]); + } + + coord[0]++; // i, j, k + } + + + if (flags & ZEDGE) { + + quad[0] = v0 + offsets[2]; + + // i, j-1, k + coord[1]--; + bool activeValues = idxAcc.probeValue(coord, quad[1]); + uint8_t cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[1] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][8] - 1 : 0; + + // i-1, j-1, k + coord[0]--; + activeValues = activeValues && idxAcc.probeValue(coord, quad[2]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[2] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][6] - 1 : 0; + + // i-1, j, k + coord[1]++; + activeValues = activeValues && idxAcc.probeValue(coord, quad[3]); + cell = uint8_t(SIGNS & signAcc.getValue(coord)); + quad[3] += sEdgeGroupTable[cell][0] > 1 ? sEdgeGroupTable[cell][2] - 1 : 0; + + if (activeValues) { + mesher.addPrim(quad, !isInside, tag[bool(refFlags & ZEDGE)]); + } + } +} + + +//////////////////////////////////////// + + +template +struct MaskTileBorders +{ + using InputValueType = typename InputTreeType::ValueType; + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + + + MaskTileBorders(const InputTreeType& inputTree, InputValueType iso, + BoolTreeType& mask, const Vec4i* tileArray) + : mInputTree(&inputTree) + , mIsovalue(iso) + , mTempMask(false) + , mMask(&mask) + , mTileArray(tileArray) + { + } + + MaskTileBorders(MaskTileBorders& rhs, tbb::split) + : mInputTree(rhs.mInputTree) + , mIsovalue(rhs.mIsovalue) + , mTempMask(false) + , mMask(&mTempMask) + , mTileArray(rhs.mTileArray) + { + } + + void join(MaskTileBorders& rhs) { mMask->merge(*rhs.mMask); } + + void operator()(const tbb::blocked_range&); + +private: + InputTreeType const * const mInputTree; + InputValueType const mIsovalue; + BoolTreeType mTempMask; + BoolTreeType * const mMask; + Vec4i const * const mTileArray; +}; // MaskTileBorders + + +template +void +MaskTileBorders::operator()(const tbb::blocked_range& range) +{ + tree::ValueAccessor inputTreeAcc(*mInputTree); + + CoordBBox region, bbox; + Coord ijk, nijk; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const Vec4i& tile = mTileArray[n]; + + bbox.min()[0] = tile[0]; + bbox.min()[1] = tile[1]; + bbox.min()[2] = tile[2]; + bbox.max() = bbox.min(); + bbox.max().offset(tile[3]); + + InputValueType value = mInputTree->background(); + + const bool isInside = isInsideValue(inputTreeAcc.getValue(bbox.min()), mIsovalue); + const int valueDepth = inputTreeAcc.getValueDepth(bbox.min()); + + // eval x-edges + + ijk = bbox.max(); + nijk = ijk; + ++nijk[0]; + + bool processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(nijk)) { + processRegion = isInside != isInsideValue(inputTreeAcc.getValue(nijk), mIsovalue); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[0] = region.max()[0] = ijk[0]; + mMask->fill(region, false); + } + + + ijk = bbox.min(); + --ijk[0]; + + processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(ijk)) { + processRegion = (!inputTreeAcc.probeValue(ijk, value) + && isInside != isInsideValue(value, mIsovalue)); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[0] = region.max()[0] = ijk[0]; + mMask->fill(region, false); + } + + + // eval y-edges + + ijk = bbox.max(); + nijk = ijk; + ++nijk[1]; + + processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(nijk)) { + processRegion = isInside != isInsideValue(inputTreeAcc.getValue(nijk), mIsovalue); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[1] = region.max()[1] = ijk[1]; + mMask->fill(region, false); + } + + + ijk = bbox.min(); + --ijk[1]; + + processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(ijk)) { + processRegion = (!inputTreeAcc.probeValue(ijk, value) + && isInside != isInsideValue(value, mIsovalue)); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[1] = region.max()[1] = ijk[1]; + mMask->fill(region, false); + } + + + // eval z-edges + + ijk = bbox.max(); + nijk = ijk; + ++nijk[2]; + + processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(nijk)) { + processRegion = isInside != isInsideValue(inputTreeAcc.getValue(nijk), mIsovalue); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[2] = region.max()[2] = ijk[2]; + mMask->fill(region, false); + } + + ijk = bbox.min(); + --ijk[2]; + + processRegion = true; + if (valueDepth >= inputTreeAcc.getValueDepth(ijk)) { + processRegion = (!inputTreeAcc.probeValue(ijk, value) + && isInside != isInsideValue(value, mIsovalue)); + } + + if (processRegion) { + region = bbox; + region.expand(1); + region.min()[2] = region.max()[2] = ijk[2]; + mMask->fill(region, false); + } + } +} // MaskTileBorders::operator() + + +template +inline void +maskActiveTileBorders(const InputTreeType& inputTree, typename InputTreeType::ValueType iso, + typename InputTreeType::template ValueConverter::Type& mask) +{ + typename InputTreeType::ValueOnCIter tileIter(inputTree); + tileIter.setMaxDepth(InputTreeType::ValueOnCIter::LEAF_DEPTH - 1); + + size_t tileCount = 0; + for ( ; tileIter; ++tileIter) { + ++tileCount; + } + + if (tileCount > 0) { + std::unique_ptr tiles(new Vec4i[tileCount]); + + CoordBBox bbox; + size_t index = 0; + + tileIter = inputTree.cbeginValueOn(); + tileIter.setMaxDepth(InputTreeType::ValueOnCIter::LEAF_DEPTH - 1); + + for (; tileIter; ++tileIter) { + Vec4i& tile = tiles[index++]; + tileIter.getBoundingBox(bbox); + tile[0] = bbox.min()[0]; + tile[1] = bbox.min()[1]; + tile[2] = bbox.min()[2]; + tile[3] = bbox.max()[0] - bbox.min()[0]; + } + + MaskTileBorders op(inputTree, iso, mask, tiles.get()); + tbb::parallel_reduce(tbb::blocked_range(0, tileCount), op); + } +} + + +//////////////////////////////////////// + + +// Utility class for the volumeToMesh wrapper +class PointListCopy +{ +public: + PointListCopy(const PointList& pointsIn, std::vector& pointsOut) + : mPointsIn(pointsIn) , mPointsOut(pointsOut) + { + } + + void operator()(const tbb::blocked_range& range) const + { + for (size_t n = range.begin(); n < range.end(); ++n) { + mPointsOut[n] = mPointsIn[n]; + } + } + +private: + const PointList& mPointsIn; + std::vector& mPointsOut; +}; + + +//////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// + + +struct LeafNodeVoxelOffsets +{ + using IndexVector = std::vector; + + template + void constructOffsetList(); + + /// Return internal core voxel offsets. + const IndexVector& core() const { return mCore; } + + + /// Return front face voxel offsets. + const IndexVector& minX() const { return mMinX; } + + /// Return back face voxel offsets. + const IndexVector& maxX() const { return mMaxX; } + + + /// Return bottom face voxel offsets. + const IndexVector& minY() const { return mMinY; } + + /// Return top face voxel offsets. + const IndexVector& maxY() const { return mMaxY; } + + + /// Return left face voxel offsets. + const IndexVector& minZ() const { return mMinZ; } + + /// Return right face voxel offsets. + const IndexVector& maxZ() const { return mMaxZ; } + + + /// Return voxel offsets with internal neighbours in x + 1. + const IndexVector& internalNeighborsX() const { return mInternalNeighborsX; } + + /// Return voxel offsets with internal neighbours in y + 1. + const IndexVector& internalNeighborsY() const { return mInternalNeighborsY; } + + /// Return voxel offsets with internal neighbours in z + 1. + const IndexVector& internalNeighborsZ() const { return mInternalNeighborsZ; } + + +private: + IndexVector mCore, mMinX, mMaxX, mMinY, mMaxY, mMinZ, mMaxZ, + mInternalNeighborsX, mInternalNeighborsY, mInternalNeighborsZ; +}; // struct LeafNodeOffsets + + +template +inline void +LeafNodeVoxelOffsets::constructOffsetList() +{ + // internal core voxels + mCore.clear(); + mCore.reserve((LeafNodeType::DIM - 2) * (LeafNodeType::DIM - 2)); + + for (Index x = 1; x < (LeafNodeType::DIM - 1); ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 1; y < (LeafNodeType::DIM - 1); ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + for (Index z = 1; z < (LeafNodeType::DIM - 1); ++z) { + mCore.push_back(offsetXY + z); + } + } + } + + // internal neighbors in x + 1 + mInternalNeighborsX.clear(); + mInternalNeighborsX.reserve(LeafNodeType::SIZE - (LeafNodeType::DIM * LeafNodeType::DIM)); + + for (Index x = 0; x < (LeafNodeType::DIM - 1); ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + mInternalNeighborsX.push_back(offsetXY + z); + } + } + } + + // internal neighbors in y + 1 + mInternalNeighborsY.clear(); + mInternalNeighborsY.reserve(LeafNodeType::SIZE - (LeafNodeType::DIM * LeafNodeType::DIM)); + + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < (LeafNodeType::DIM - 1); ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + mInternalNeighborsY.push_back(offsetXY + z); + } + } + } + + // internal neighbors in z + 1 + mInternalNeighborsZ.clear(); + mInternalNeighborsZ.reserve(LeafNodeType::SIZE - (LeafNodeType::DIM * LeafNodeType::DIM)); + + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + for (Index z = 0; z < (LeafNodeType::DIM - 1); ++z) { + mInternalNeighborsZ.push_back(offsetXY + z); + } + } + } + + // min x + mMinX.clear(); + mMinX.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = (y << LeafNodeType::LOG2DIM); + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + mMinX.push_back(offsetXY + z); + } + } + } + + // max x + mMaxX.clear(); + mMaxX.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + const Index offsetX = (LeafNodeType::DIM - 1) << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + for (Index z = 0; z < LeafNodeType::DIM; ++z) { + mMaxX.push_back(offsetXY + z); + } + } + } + + // min y + mMinY.clear(); + mMinY.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index z = 0; z < (LeafNodeType::DIM - 1); ++z) { + mMinY.push_back(offsetX + z); + } + } + } + + // max y + mMaxY.clear(); + mMaxY.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + const Index offsetY = (LeafNodeType::DIM - 1) << LeafNodeType::LOG2DIM; + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index z = 0; z < (LeafNodeType::DIM - 1); ++z) { + mMaxY.push_back(offsetX + offsetY + z); + } + } + } + + // min z + mMinZ.clear(); + mMinZ.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + mMinZ.push_back(offsetXY); + } + } + } + + // max z + mMaxZ.clear(); + mMaxZ.reserve(LeafNodeType::DIM * LeafNodeType::DIM); + { + for (Index x = 0; x < LeafNodeType::DIM; ++x) { + const Index offsetX = x << (2 * LeafNodeType::LOG2DIM); + for (Index y = 0; y < LeafNodeType::DIM; ++y) { + const Index offsetXY = offsetX + (y << LeafNodeType::LOG2DIM); + mMaxZ.push_back(offsetXY + (LeafNodeType::DIM - 1)); + } + } + } +} + + +//////////////////////////////////////// + + +/// Utility method to marks all voxels that share an edge. +template +struct VoxelEdgeAccessor { + + enum { AXIS = _AXIS }; + AccessorT& acc; + + VoxelEdgeAccessor(AccessorT& _acc) : acc(_acc) {} + + void set(Coord ijk) { + if (_AXIS == 0) { // x + 1 edge + acc.setActiveState(ijk); + --ijk[1]; // set i, j-1, k + acc.setActiveState(ijk); + --ijk[2]; // set i, j-1, k-1 + acc.setActiveState(ijk); + ++ijk[1]; // set i, j, k-1 + acc.setActiveState(ijk); + } else if (_AXIS == 1) { // y + 1 edge + acc.setActiveState(ijk); + --ijk[2]; // set i, j, k-1 + acc.setActiveState(ijk); + --ijk[0]; // set i-1, j, k-1 + acc.setActiveState(ijk); + ++ijk[2]; // set i-1, j, k + acc.setActiveState(ijk); + } else { // z + 1 edge + acc.setActiveState(ijk); + --ijk[1]; // set i, j-1, k + acc.setActiveState(ijk); + --ijk[0]; // set i-1, j-1, k + acc.setActiveState(ijk); + ++ijk[1]; // set i-1, j, k + acc.setActiveState(ijk); + } + } +}; + + +/// Utility method to check for sign changes along the x + 1, y + 1 or z + 1 directions. +/// The direction is determined by the @a edgeAcc parameter. Only voxels that have internal +/// neighbours are evaluated. +template +void +evalInternalVoxelEdges(VoxelEdgeAcc& edgeAcc, const LeafNode& leafnode, + const LeafNodeVoxelOffsets& voxels, const typename LeafNode::ValueType iso) +{ + Index nvo = 1; // neighbour voxel offset, z + 1 direction assumed initially. + const std::vector* offsets = &voxels.internalNeighborsZ(); + + if (VoxelEdgeAcc::AXIS == 0) { // x + 1 direction + nvo = LeafNode::DIM * LeafNode::DIM; + offsets = &voxels.internalNeighborsX(); + } else if (VoxelEdgeAcc::AXIS == 1) { // y + 1 direction + nvo = LeafNode::DIM; + offsets = &voxels.internalNeighborsY(); + } + + for (size_t n = 0, N = offsets->size(); n < N; ++n) { + const Index& pos = (*offsets)[n]; + bool isActive = leafnode.isValueOn(pos) || leafnode.isValueOn(pos + nvo); + if (isActive && (isInsideValue(leafnode.getValue(pos), iso) != + isInsideValue(leafnode.getValue(pos + nvo), iso))) { + edgeAcc.set(leafnode.offsetToGlobalCoord(pos)); + } + } +} + + +/// Utility method to check for sign changes along the x + 1, y + 1 or z + 1 directions. +/// The direction is determined by the @a edgeAcc parameter. All voxels that reside in the +/// specified leafnode face: back, top or right are evaluated. +template +void +evalExtrenalVoxelEdges(VoxelEdgeAcc& edgeAcc, TreeAcc& acc, const LeafNode& lhsNode, + const LeafNodeVoxelOffsets& voxels, const typename LeafNode::ValueType iso) +{ + const std::vector* lhsOffsets = &voxels.maxX(); + const std::vector* rhsOffsets = &voxels.minX(); + Coord ijk = lhsNode.origin(); + + if (VoxelEdgeAcc::AXIS == 0) { // back leafnode face + ijk[0] += LeafNode::DIM; + } else if (VoxelEdgeAcc::AXIS == 1) { // top leafnode face + ijk[1] += LeafNode::DIM; + lhsOffsets = &voxels.maxY(); + rhsOffsets = &voxels.minY(); + } else if (VoxelEdgeAcc::AXIS == 2) { // right leafnode face + ijk[2] += LeafNode::DIM; + lhsOffsets = &voxels.maxZ(); + rhsOffsets = &voxels.minZ(); + } + + typename LeafNode::ValueType value; + const LeafNode* rhsNodePt = acc.probeConstLeaf(ijk); + + if (rhsNodePt) { + for (size_t n = 0, N = lhsOffsets->size(); n < N; ++n) { + const Index& pos = (*lhsOffsets)[n]; + bool isActive = lhsNode.isValueOn(pos) || rhsNodePt->isValueOn((*rhsOffsets)[n]); + if (isActive && (isInsideValue(lhsNode.getValue(pos), iso) != + isInsideValue(rhsNodePt->getValue((*rhsOffsets)[n]), iso))) { + edgeAcc.set(lhsNode.offsetToGlobalCoord(pos)); + } + } + } else if (!acc.probeValue(ijk, value)) { + const bool inside = isInsideValue(value, iso); + for (size_t n = 0, N = lhsOffsets->size(); n < N; ++n) { + const Index& pos = (*lhsOffsets)[n]; + if (lhsNode.isValueOn(pos) && (inside != isInsideValue(lhsNode.getValue(pos), iso))) { + edgeAcc.set(lhsNode.offsetToGlobalCoord(pos)); + } + } + } +} + + +/// Utility method to check for sign changes along the x - 1, y - 1 or z - 1 directions. +/// The direction is determined by the @a edgeAcc parameter. All voxels that reside in the +/// specified leafnode face: front, bottom or left are evaluated. +template +void +evalExtrenalVoxelEdgesInv(VoxelEdgeAcc& edgeAcc, TreeAcc& acc, const LeafNode& leafnode, + const LeafNodeVoxelOffsets& voxels, const typename LeafNode::ValueType iso) +{ + Coord ijk = leafnode.origin(); + if (VoxelEdgeAcc::AXIS == 0) --ijk[0]; // front leafnode face + else if (VoxelEdgeAcc::AXIS == 1) --ijk[1]; // bottom leafnode face + else if (VoxelEdgeAcc::AXIS == 2) --ijk[2]; // left leafnode face + + typename LeafNode::ValueType value; + if (!acc.probeConstLeaf(ijk) && !acc.probeValue(ijk, value)) { + + const std::vector* offsets = &voxels.internalNeighborsX(); + if (VoxelEdgeAcc::AXIS == 1) offsets = &voxels.internalNeighborsY(); + else if (VoxelEdgeAcc::AXIS == 2) offsets = &voxels.internalNeighborsZ(); + + const bool inside = isInsideValue(value, iso); + for (size_t n = 0, N = offsets->size(); n < N; ++n) { + + const Index& pos = (*offsets)[n]; + if (leafnode.isValueOn(pos) + && (inside != isInsideValue(leafnode.getValue(pos), iso))) + { + ijk = leafnode.offsetToGlobalCoord(pos); + if (VoxelEdgeAcc::AXIS == 0) --ijk[0]; + else if (VoxelEdgeAcc::AXIS == 1) --ijk[1]; + else if (VoxelEdgeAcc::AXIS == 2) --ijk[2]; + + edgeAcc.set(ijk); + } + } + } +} + + + +template +struct IdentifyIntersectingVoxels +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + + IdentifyIntersectingVoxels( + const InputTreeType& inputTree, + const std::vector& inputLeafNodes, + BoolTreeType& intersectionTree, + InputValueType iso); + + IdentifyIntersectingVoxels(IdentifyIntersectingVoxels&, tbb::split); + void operator()(const tbb::blocked_range&); + void join(const IdentifyIntersectingVoxels& rhs) { + mIntersectionAccessor.tree().merge(rhs.mIntersectionAccessor.tree()); + } + +private: + tree::ValueAccessor mInputAccessor; + InputLeafNodeType const * const * const mInputNodes; + + BoolTreeType mIntersectionTree; + tree::ValueAccessor mIntersectionAccessor; + + LeafNodeVoxelOffsets mOffsetData; + const LeafNodeVoxelOffsets* mOffsets; + + InputValueType mIsovalue; +}; // struct IdentifyIntersectingVoxels + + +template +IdentifyIntersectingVoxels::IdentifyIntersectingVoxels( + const InputTreeType& inputTree, + const std::vector& inputLeafNodes, + BoolTreeType& intersectionTree, + InputValueType iso) + : mInputAccessor(inputTree) + , mInputNodes(inputLeafNodes.empty() ? nullptr : &inputLeafNodes.front()) + , mIntersectionTree(false) + , mIntersectionAccessor(intersectionTree) + , mOffsetData() + , mOffsets(&mOffsetData) + , mIsovalue(iso) +{ + mOffsetData.constructOffsetList(); +} + + +template +IdentifyIntersectingVoxels::IdentifyIntersectingVoxels( + IdentifyIntersectingVoxels& rhs, tbb::split) + : mInputAccessor(rhs.mInputAccessor.tree()) + , mInputNodes(rhs.mInputNodes) + , mIntersectionTree(false) + , mIntersectionAccessor(mIntersectionTree) // use local tree. + , mOffsetData() + , mOffsets(rhs.mOffsets) // reference data from main instance. + , mIsovalue(rhs.mIsovalue) +{ +} + + +template +void +IdentifyIntersectingVoxels::operator()(const tbb::blocked_range& range) +{ + VoxelEdgeAccessor, 0> xEdgeAcc(mIntersectionAccessor); + VoxelEdgeAccessor, 1> yEdgeAcc(mIntersectionAccessor); + VoxelEdgeAccessor, 2> zEdgeAcc(mIntersectionAccessor); + + for (size_t n = range.begin(); n != range.end(); ++n) { + + const InputLeafNodeType& node = *mInputNodes[n]; + + // internal x + 1 voxel edges + evalInternalVoxelEdges(xEdgeAcc, node, *mOffsets, mIsovalue); + // internal y + 1 voxel edges + evalInternalVoxelEdges(yEdgeAcc, node, *mOffsets, mIsovalue); + // internal z + 1 voxel edges + evalInternalVoxelEdges(zEdgeAcc, node, *mOffsets, mIsovalue); + + // external x + 1 voxels edges (back face) + evalExtrenalVoxelEdges(xEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + // external y + 1 voxels edges (top face) + evalExtrenalVoxelEdges(yEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + // external z + 1 voxels edges (right face) + evalExtrenalVoxelEdges(zEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + + // The remaining edges are only checked if the leafnode neighbour, in the + // corresponding direction, is an inactive tile. + + // external x - 1 voxels edges (front face) + evalExtrenalVoxelEdgesInv(xEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + // external y - 1 voxels edges (bottom face) + evalExtrenalVoxelEdgesInv(yEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + // external z - 1 voxels edges (left face) + evalExtrenalVoxelEdgesInv(zEdgeAcc, mInputAccessor, node, *mOffsets, mIsovalue); + } +} // IdentifyIntersectingVoxels::operator() + + +template +inline void +identifySurfaceIntersectingVoxels( + typename InputTreeType::template ValueConverter::Type& intersectionTree, + const InputTreeType& inputTree, + typename InputTreeType::ValueType isovalue) +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + + std::vector inputLeafNodes; + inputTree.getNodes(inputLeafNodes); + + IdentifyIntersectingVoxels op( + inputTree, inputLeafNodes, intersectionTree, isovalue); + + tbb::parallel_reduce(tbb::blocked_range(0, inputLeafNodes.size()), op); + + maskActiveTileBorders(inputTree, isovalue, intersectionTree); +} + + +//////////////////////////////////////// + + +template +struct MaskIntersectingVoxels +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MaskIntersectingVoxels( + const InputTreeType& inputTree, + const std::vector& nodes, + BoolTreeType& intersectionTree, + InputValueType iso); + + MaskIntersectingVoxels(MaskIntersectingVoxels&, tbb::split); + void operator()(const tbb::blocked_range&); + void join(const MaskIntersectingVoxels& rhs) { + mIntersectionAccessor.tree().merge(rhs.mIntersectionAccessor.tree()); + } + +private: + tree::ValueAccessor mInputAccessor; + BoolLeafNodeType const * const * const mNodes; + + BoolTreeType mIntersectionTree; + tree::ValueAccessor mIntersectionAccessor; + + InputValueType mIsovalue; +}; // struct MaskIntersectingVoxels + + +template +MaskIntersectingVoxels::MaskIntersectingVoxels( + const InputTreeType& inputTree, + const std::vector& nodes, + BoolTreeType& intersectionTree, + InputValueType iso) + : mInputAccessor(inputTree) + , mNodes(nodes.empty() ? nullptr : &nodes.front()) + , mIntersectionTree(false) + , mIntersectionAccessor(intersectionTree) + , mIsovalue(iso) +{ +} + + +template +MaskIntersectingVoxels::MaskIntersectingVoxels( + MaskIntersectingVoxels& rhs, tbb::split) + : mInputAccessor(rhs.mInputAccessor.tree()) + , mNodes(rhs.mNodes) + , mIntersectionTree(false) + , mIntersectionAccessor(mIntersectionTree) // use local tree. + , mIsovalue(rhs.mIsovalue) +{ +} + + +template +void +MaskIntersectingVoxels::operator()(const tbb::blocked_range& range) +{ + VoxelEdgeAccessor, 0> xEdgeAcc(mIntersectionAccessor); + VoxelEdgeAccessor, 1> yEdgeAcc(mIntersectionAccessor); + VoxelEdgeAccessor, 2> zEdgeAcc(mIntersectionAccessor); + + Coord ijk(0, 0, 0); + InputValueType iso(mIsovalue); + + for (size_t n = range.begin(); n != range.end(); ++n) { + + const BoolLeafNodeType& node = *mNodes[n]; + + for (typename BoolLeafNodeType::ValueOnCIter it = node.cbeginValueOn(); it; ++it) { + + if (!it.getValue()) { + + ijk = it.getCoord(); + + const bool inside = isInsideValue(mInputAccessor.getValue(ijk), iso); + + if (inside != isInsideValue(mInputAccessor.getValue(ijk.offsetBy(1, 0, 0)), iso)) { + xEdgeAcc.set(ijk); + } + + if (inside != isInsideValue(mInputAccessor.getValue(ijk.offsetBy(0, 1, 0)), iso)) { + yEdgeAcc.set(ijk); + } + + if (inside != isInsideValue(mInputAccessor.getValue(ijk.offsetBy(0, 0, 1)), iso)) { + zEdgeAcc.set(ijk); + } + } + } + } +} // MaskIntersectingVoxels::operator() + + +template +struct MaskBorderVoxels +{ + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MaskBorderVoxels(const BoolTreeType& maskTree, + const std::vector& maskNodes, + BoolTreeType& borderTree) + : mMaskTree(&maskTree) + , mMaskNodes(maskNodes.empty() ? nullptr : &maskNodes.front()) + , mTmpBorderTree(false) + , mBorderTree(&borderTree) + { + } + + MaskBorderVoxels(MaskBorderVoxels& rhs, tbb::split) + : mMaskTree(rhs.mMaskTree) + , mMaskNodes(rhs.mMaskNodes) + , mTmpBorderTree(false) + , mBorderTree(&mTmpBorderTree) + { + } + + void join(MaskBorderVoxels& rhs) { mBorderTree->merge(*rhs.mBorderTree); } + + void operator()(const tbb::blocked_range& range) + { + tree::ValueAccessor maskAcc(*mMaskTree); + tree::ValueAccessor borderAcc(*mBorderTree); + Coord ijk(0, 0, 0); + + for (size_t n = range.begin(); n != range.end(); ++n) { + + const BoolLeafNodeType& node = *mMaskNodes[n]; + + for (typename BoolLeafNodeType::ValueOnCIter it = node.cbeginValueOn(); it; ++it) { + + ijk = it.getCoord(); + + const bool lhs = it.getValue(); + bool rhs = lhs; + + bool isEdgeVoxel = false; + + ijk[2] += 1; // i, j, k+1 + isEdgeVoxel = (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + ijk[1] += 1; // i, j+1, k+1 + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + ijk[0] += 1; // i+1, j+1, k+1 + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + ijk[1] -= 1; // i+1, j, k+1 + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + + ijk[2] -= 1; // i+1, j, k + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + ijk[1] += 1; // i+1, j+1, k + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + ijk[0] -= 1; // i, j+1, k + isEdgeVoxel = isEdgeVoxel || (maskAcc.probeValue(ijk, rhs) && lhs != rhs); + + if (isEdgeVoxel) { + ijk[1] -= 1; // i, j, k + borderAcc.setValue(ijk, true); + } + } + } + } + +private: + BoolTreeType const * const mMaskTree; + BoolLeafNodeType const * const * const mMaskNodes; + + BoolTreeType mTmpBorderTree; + BoolTreeType * const mBorderTree; +}; // struct MaskBorderVoxels + + +template +struct SyncMaskValues +{ + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + SyncMaskValues(const std::vector& nodes, const BoolTreeType& mask) + : mNodes(nodes.empty() ? nullptr : &nodes.front()) + , mMaskTree(&mask) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using ValueOnIter = typename BoolLeafNodeType::ValueOnIter; + + tree::ValueAccessor maskTreeAcc(*mMaskTree); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + BoolLeafNodeType& node = *mNodes[n]; + + const BoolLeafNodeType * maskNode = maskTreeAcc.probeConstLeaf(node.origin()); + + if (maskNode) { + for (ValueOnIter it = node.beginValueOn(); it; ++it) { + const Index pos = it.pos(); + if (maskNode->getValue(pos)) { + node.setValueOnly(pos, true); + } + } + } + } + } + +private: + BoolLeafNodeType * const * const mNodes; + BoolTreeType const * const mMaskTree; +}; // struct SyncMaskValues + + +//////////////////////////////////////// + + +template +struct MaskSurface +{ + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + MaskSurface(const std::vector& nodes, const BoolTreeType& mask, + const math::Transform& inputTransform, const math::Transform& maskTransform, bool invert) + : mNodes(nodes.empty() ? nullptr : &nodes.front()) + , mMaskTree(&mask) + , mInputTransform(inputTransform) + , mMaskTransform(maskTransform) + , mInvertMask(invert) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using ValueOnIter = typename BoolLeafNodeType::ValueOnIter; + + tree::ValueAccessor maskTreeAcc(*mMaskTree); + + const bool matchingTransforms = mInputTransform == mMaskTransform; + const bool maskState = mInvertMask; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + BoolLeafNodeType& node = *mNodes[n]; + + if (matchingTransforms) { + + const BoolLeafNodeType * maskNode = maskTreeAcc.probeConstLeaf(node.origin()); + + if (maskNode) { + + for (ValueOnIter it = node.beginValueOn(); it; ++it) { + const Index pos = it.pos(); + if (maskNode->isValueOn(pos) == maskState) { + node.setValueOnly(pos, true); + } + } + + } else { + + if (maskTreeAcc.isValueOn(node.origin()) == maskState) { + for (ValueOnIter it = node.beginValueOn(); it; ++it) { + node.setValueOnly(it.pos(), true); + } + } + + } + + } else { + + Coord ijk(0, 0, 0); + + for (ValueOnIter it = node.beginValueOn(); it; ++it) { + + ijk = mMaskTransform.worldToIndexCellCentered( + mInputTransform.indexToWorld(it.getCoord())); + + if (maskTreeAcc.isValueOn(ijk) == maskState) { + node.setValueOnly(it.pos(), true); + } + } + + } + } + } + +private: + BoolLeafNodeType * const * const mNodes; + BoolTreeType const * const mMaskTree; + math::Transform const mInputTransform; + math::Transform const mMaskTransform; + bool const mInvertMask; +}; // struct MaskSurface + + +template +inline void +applySurfaceMask( + typename InputGridType::TreeType::template ValueConverter::Type& intersectionTree, + typename InputGridType::TreeType::template ValueConverter::Type& borderTree, + const InputGridType& inputGrid, + const GridBase::ConstPtr& maskGrid, + bool invertMask, + typename InputGridType::ValueType isovalue) +{ + using InputTreeType = typename InputGridType::TreeType; + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + using BoolGridType = Grid; + + if (maskGrid && maskGrid->type() == BoolGridType::gridType()) { + + const math::Transform& transform = inputGrid.transform(); + const InputTreeType& inputTree = inputGrid.tree(); + + const BoolGridType * surfaceMask = static_cast(maskGrid.get()); + + const BoolTreeType& maskTree = surfaceMask->tree(); + const math::Transform& maskTransform = surfaceMask->transform(); + + + // mark masked voxels + + std::vector intersectionLeafNodes; + intersectionTree.getNodes(intersectionLeafNodes); + + tbb::parallel_for(tbb::blocked_range(0, intersectionLeafNodes.size()), + MaskSurface( + intersectionLeafNodes, maskTree, transform, maskTransform, invertMask)); + + + // mask surface-mask border + + MaskBorderVoxels borderOp( + intersectionTree, intersectionLeafNodes, borderTree); + tbb::parallel_reduce(tbb::blocked_range(0, intersectionLeafNodes.size()), borderOp); + + + // recompute isosurface intersection mask + + BoolTreeType tmpIntersectionTree(false); + + MaskIntersectingVoxels op( + inputTree, intersectionLeafNodes, tmpIntersectionTree, isovalue); + + tbb::parallel_reduce(tbb::blocked_range(0, intersectionLeafNodes.size()), op); + + std::vector tmpIntersectionLeafNodes; + tmpIntersectionTree.getNodes(tmpIntersectionLeafNodes); + + tbb::parallel_for(tbb::blocked_range(0, tmpIntersectionLeafNodes.size()), + SyncMaskValues(tmpIntersectionLeafNodes, intersectionTree)); + + intersectionTree.clear(); + intersectionTree.merge(tmpIntersectionTree); + } +} + + +//////////////////////////////////////// + + +template +struct ComputeAuxiliaryData +{ + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + using BoolLeafNodeType = tree::LeafNode; + + using Int16TreeType = typename InputTreeType::template ValueConverter::Type; + using Index32TreeType = typename InputTreeType::template ValueConverter::Type; + + + ComputeAuxiliaryData(const InputTreeType& inputTree, + const std::vector& intersectionLeafNodes, + Int16TreeType& signFlagsTree, + Index32TreeType& pointIndexTree, + InputValueType iso); + + ComputeAuxiliaryData(ComputeAuxiliaryData&, tbb::split); + void operator()(const tbb::blocked_range&); + void join(const ComputeAuxiliaryData& rhs) { + mSignFlagsAccessor.tree().merge(rhs.mSignFlagsAccessor.tree()); + mPointIndexAccessor.tree().merge(rhs.mPointIndexAccessor.tree()); + } + +private: + tree::ValueAccessor mInputAccessor; + BoolLeafNodeType const * const * const mIntersectionNodes; + + Int16TreeType mSignFlagsTree; + tree::ValueAccessor mSignFlagsAccessor; + Index32TreeType mPointIndexTree; + tree::ValueAccessor mPointIndexAccessor; + + const InputValueType mIsovalue; +}; + + +template +ComputeAuxiliaryData::ComputeAuxiliaryData( + const InputTreeType& inputTree, + const std::vector& intersectionLeafNodes, + Int16TreeType& signFlagsTree, + Index32TreeType& pointIndexTree, + InputValueType iso) + : mInputAccessor(inputTree) + , mIntersectionNodes(&intersectionLeafNodes.front()) + , mSignFlagsTree(0) + , mSignFlagsAccessor(signFlagsTree) + , mPointIndexTree(std::numeric_limits::max()) + , mPointIndexAccessor(pointIndexTree) + , mIsovalue(iso) +{ + pointIndexTree.root().setBackground(std::numeric_limits::max(), false); +} + + +template +ComputeAuxiliaryData::ComputeAuxiliaryData(ComputeAuxiliaryData& rhs, tbb::split) + : mInputAccessor(rhs.mInputAccessor.tree()) + , mIntersectionNodes(rhs.mIntersectionNodes) + , mSignFlagsTree(0) + , mSignFlagsAccessor(mSignFlagsTree) + , mPointIndexTree(std::numeric_limits::max()) + , mPointIndexAccessor(mPointIndexTree) + , mIsovalue(rhs.mIsovalue) +{ +} + + +template +void +ComputeAuxiliaryData::operator()(const tbb::blocked_range& range) +{ + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + + Coord ijk; + math::Tuple<8, InputValueType> cellVertexValues; + typename std::unique_ptr signsNodePt(new Int16LeafNodeType(ijk, 0)); + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const BoolLeafNodeType& maskNode = *mIntersectionNodes[n]; + const Coord& origin = maskNode.origin(); + + const InputLeafNodeType *leafPt = mInputAccessor.probeConstLeaf(origin); + + if (!signsNodePt.get()) signsNodePt.reset(new Int16LeafNodeType(origin, 0)); + else signsNodePt->setOrigin(origin); + + bool updatedNode = false; + + for (typename BoolLeafNodeType::ValueOnCIter it = maskNode.cbeginValueOn(); it; ++it) { + + const Index pos = it.pos(); + ijk = BoolLeafNodeType::offsetToLocalCoord(pos); + + if (leafPt && + ijk[0] < int(BoolLeafNodeType::DIM - 1) && + ijk[1] < int(BoolLeafNodeType::DIM - 1) && + ijk[2] < int(BoolLeafNodeType::DIM - 1) ) { + getCellVertexValues(*leafPt, pos, cellVertexValues); + } else { + getCellVertexValues(mInputAccessor, origin + ijk, cellVertexValues); + } + + uint8_t signFlags = computeSignFlags(cellVertexValues, mIsovalue); + + if (signFlags != 0 && signFlags != 0xFF) { + + const bool inside = signFlags & 0x1; + + int edgeFlags = inside ? INSIDE : 0; + + if (!it.getValue()) { + edgeFlags |= inside != ((signFlags & 0x02) != 0) ? XEDGE : 0; + edgeFlags |= inside != ((signFlags & 0x10) != 0) ? YEDGE : 0; + edgeFlags |= inside != ((signFlags & 0x08) != 0) ? ZEDGE : 0; + } + + const uint8_t ambiguousCellFlags = sAmbiguousFace[signFlags]; + if (ambiguousCellFlags != 0) { + correctCellSigns(signFlags, ambiguousCellFlags, mInputAccessor, + origin + ijk, mIsovalue); + } + + edgeFlags |= int(signFlags); + + signsNodePt->setValueOn(pos, Int16(edgeFlags)); + updatedNode = true; + } + } + + if (updatedNode) { + typename Index32TreeType::LeafNodeType* idxNode = mPointIndexAccessor.touchLeaf(origin); + idxNode->topologyUnion(*signsNodePt); + + // zero fill + for (auto it = idxNode->beginValueOn(); it; ++it) { + idxNode->setValueOnly(it.pos(), 0); + } + + mSignFlagsAccessor.addLeaf(signsNodePt.release()); + } + } +} // ComputeAuxiliaryData::operator() + + +template +inline void +computeAuxiliaryData( + typename InputTreeType::template ValueConverter::Type& signFlagsTree, + typename InputTreeType::template ValueConverter::Type& pointIndexTree, + const typename InputTreeType::template ValueConverter::Type& intersectionTree, + const InputTreeType& inputTree, + typename InputTreeType::ValueType isovalue) +{ + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using BoolLeafNodeType = typename BoolTreeType::LeafNodeType; + + std::vector intersectionLeafNodes; + intersectionTree.getNodes(intersectionLeafNodes); + + ComputeAuxiliaryData op( + inputTree, intersectionLeafNodes, signFlagsTree, pointIndexTree, isovalue); + + tbb::parallel_reduce(tbb::blocked_range(0, intersectionLeafNodes.size()), op); +} + + +//////////////////////////////////////// + + +template +struct LeafNodePointCount +{ + using Int16LeafNodeType = tree::LeafNode; + + LeafNodePointCount(const std::vector& leafNodes, + std::unique_ptr& leafNodeCount) + : mLeafNodes(leafNodes.empty() ? nullptr : &leafNodes.front()) + , mData(leafNodeCount.get()) + { + } + + void operator()(const tbb::blocked_range& range) const { + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + Index32 count = 0; + + Int16 const * p = mLeafNodes[n]->buffer().data(); + Int16 const * const endP = p + Int16LeafNodeType::SIZE; + + while (p < endP) { + count += Index32(sEdgeGroupTable[(SIGNS & *p)][0]); + ++p; + } + + mData[n] = count; + } + } + +private: + Int16LeafNodeType * const * const mLeafNodes; + Index32 *mData; +}; // struct LeafNodePointCount + + +template +struct AdaptiveLeafNodePointCount +{ + using Int16LeafNodeType = tree::LeafNode; + + AdaptiveLeafNodePointCount(const std::vector& pointIndexNodes, + const std::vector& signDataNodes, + std::unique_ptr& leafNodeCount) + : mPointIndexNodes(pointIndexNodes.empty() ? nullptr : &pointIndexNodes.front()) + , mSignDataNodes(signDataNodes.empty() ? nullptr : &signDataNodes.front()) + , mData(leafNodeCount.get()) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using IndexType = typename PointIndexLeafNode::ValueType; + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const PointIndexLeafNode& node = *mPointIndexNodes[n]; + const Int16LeafNodeType& signNode = *mSignDataNodes[n]; + + size_t count = 0; + + std::set uniqueRegions; + + for (typename PointIndexLeafNode::ValueOnCIter it = node.cbeginValueOn(); it; ++it) { + + IndexType id = it.getValue(); + + if (id == 0) { + count += size_t(sEdgeGroupTable[(SIGNS & signNode.getValue(it.pos()))][0]); + } else if (id != IndexType(util::INVALID_IDX)) { + uniqueRegions.insert(id); + } + } + + mData[n] = Index32(count + uniqueRegions.size()); + } + } + +private: + PointIndexLeafNode const * const * const mPointIndexNodes; + Int16LeafNodeType const * const * const mSignDataNodes; + Index32 *mData; +}; // struct AdaptiveLeafNodePointCount + + +template +struct MapPoints +{ + using Int16LeafNodeType = tree::LeafNode; + + MapPoints(const std::vector& pointIndexNodes, + const std::vector& signDataNodes, + std::unique_ptr& leafNodeCount) + : mPointIndexNodes(pointIndexNodes.empty() ? nullptr : &pointIndexNodes.front()) + , mSignDataNodes(signDataNodes.empty() ? nullptr : &signDataNodes.front()) + , mData(leafNodeCount.get()) + { + } + + void operator()(const tbb::blocked_range& range) const { + + for (size_t n = range.begin(), N = range.end(); n != N; ++n) { + + const Int16LeafNodeType& signNode = *mSignDataNodes[n]; + PointIndexLeafNode& indexNode = *mPointIndexNodes[n]; + + Index32 pointOffset = mData[n]; + + for (auto it = indexNode.beginValueOn(); it; ++it) { + const Index pos = it.pos(); + indexNode.setValueOnly(pos, pointOffset); + const int signs = SIGNS & int(signNode.getValue(pos)); + pointOffset += Index32(sEdgeGroupTable[signs][0]); + } + } + } + +private: + PointIndexLeafNode * const * const mPointIndexNodes; + Int16LeafNodeType const * const * const mSignDataNodes; + Index32 * const mData; +}; // struct MapPoints + + + + +template +struct ComputePolygons +{ + using Int16TreeType = typename TreeType::template ValueConverter::Type; + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + + using Index32TreeType = typename TreeType::template ValueConverter::Type; + using Index32LeafNodeType = typename Index32TreeType::LeafNodeType; + + + ComputePolygons( + const std::vector& signFlagsLeafNodes, + const Int16TreeType& signFlagsTree, + const Index32TreeType& idxTree, + PolygonPoolList& polygons, + bool invertSurfaceOrientation); + + void setRefSignTree(const Int16TreeType * r) { mRefSignFlagsTree = r; } + + void operator()(const tbb::blocked_range&) const; + +private: + Int16LeafNodeType * const * const mSignFlagsLeafNodes; + Int16TreeType const * const mSignFlagsTree; + Int16TreeType const * mRefSignFlagsTree; + Index32TreeType const * const mIndexTree; + PolygonPoolList * const mPolygonPoolList; + bool const mInvertSurfaceOrientation; +}; // struct ComputePolygons + + +template +ComputePolygons::ComputePolygons( + const std::vector& signFlagsLeafNodes, + const Int16TreeType& signFlagsTree, + const Index32TreeType& idxTree, + PolygonPoolList& polygons, + bool invertSurfaceOrientation) + : mSignFlagsLeafNodes(signFlagsLeafNodes.empty() ? nullptr : &signFlagsLeafNodes.front()) + , mSignFlagsTree(&signFlagsTree) + , mRefSignFlagsTree(nullptr) + , mIndexTree(&idxTree) + , mPolygonPoolList(&polygons) + , mInvertSurfaceOrientation(invertSurfaceOrientation) +{ +} + +template +void +ComputePolygons::operator()(const tbb::blocked_range& range) const +{ + using Int16ValueAccessor = tree::ValueAccessor; + Int16ValueAccessor signAcc(*mSignFlagsTree); + + tree::ValueAccessor idxAcc(*mIndexTree); + + const bool invertSurfaceOrientation = mInvertSurfaceOrientation; + + PrimBuilder mesher; + size_t edgeCount; + Coord ijk, origin; + + // reference data + std::unique_ptr refSignAcc; + if (mRefSignFlagsTree) refSignAcc.reset(new Int16ValueAccessor(*mRefSignFlagsTree)); + + for (size_t n = range.begin(); n != range.end(); ++n) { + + const Int16LeafNodeType& node = *mSignFlagsLeafNodes[n]; + origin = node.origin(); + + // Get an upper bound on the number of primitives. + edgeCount = 0; + typename Int16LeafNodeType::ValueOnCIter iter = node.cbeginValueOn(); + for (; iter; ++iter) { + if (iter.getValue() & XEDGE) ++edgeCount; + if (iter.getValue() & YEDGE) ++edgeCount; + if (iter.getValue() & ZEDGE) ++edgeCount; + } + + if(edgeCount == 0) continue; + + mesher.init(edgeCount, (*mPolygonPoolList)[n]); + + const Int16LeafNodeType *signleafPt = signAcc.probeConstLeaf(origin); + const Index32LeafNodeType *idxLeafPt = idxAcc.probeConstLeaf(origin); + + if (!signleafPt || !idxLeafPt) continue; + + + const Int16LeafNodeType *refSignLeafPt = nullptr; + if (refSignAcc) refSignLeafPt = refSignAcc->probeConstLeaf(origin); + + Vec3i offsets; + + for (iter = node.cbeginValueOn(); iter; ++iter) { + ijk = iter.getCoord(); + + Int16 flags = iter.getValue(); + + if (!(flags & 0xE00)) continue; + + Int16 refFlags = 0; + if (refSignLeafPt) { + refFlags = refSignLeafPt->getValue(iter.pos()); + } + + offsets[0] = 0; + offsets[1] = 0; + offsets[2] = 0; + + const uint8_t cell = uint8_t(SIGNS & flags); + + if (sEdgeGroupTable[cell][0] > 1) { + offsets[0] = (sEdgeGroupTable[cell][1] - 1); + offsets[1] = (sEdgeGroupTable[cell][9] - 1); + offsets[2] = (sEdgeGroupTable[cell][4] - 1); + } + + if (ijk[0] > origin[0] && ijk[1] > origin[1] && ijk[2] > origin[2]) { + constructPolygons(invertSurfaceOrientation, + flags, refFlags, offsets, ijk, *signleafPt, *idxLeafPt, mesher); + } else { + constructPolygons(invertSurfaceOrientation, + flags, refFlags, offsets, ijk, signAcc, idxAcc, mesher); + } + } + + mesher.done(); + } + +} // ComputePolygons::operator() + + +//////////////////////////////////////// + + +template +struct CopyArray +{ + CopyArray(T * outputArray, const T * inputArray, size_t outputOffset = 0) + : mOutputArray(outputArray), mInputArray(inputArray), mOutputOffset(outputOffset) + { + } + + void operator()(const tbb::blocked_range& inputArrayRange) const + { + const size_t offset = mOutputOffset; + for (size_t n = inputArrayRange.begin(), N = inputArrayRange.end(); n < N; ++n) { + mOutputArray[offset + n] = mInputArray[n]; + } + } + +private: + T * const mOutputArray; + T const * const mInputArray; + size_t const mOutputOffset; +}; // struct CopyArray + + +struct FlagAndCountQuadsToSubdivide +{ + FlagAndCountQuadsToSubdivide(PolygonPoolList& polygons, + const std::vector& pointFlags, + std::unique_ptr& points, + std::unique_ptr& numQuadsToDivide) + : mPolygonPoolList(&polygons) + , mPointFlags(pointFlags.empty() ? nullptr : &pointFlags.front()) + , mPoints(points.get()) + , mNumQuadsToDivide(numQuadsToDivide.get()) + { + } + + void operator()(const tbb::blocked_range& range) const + { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + PolygonPool& polygons = (*mPolygonPoolList)[n]; + + unsigned count = 0; + + // count and tag nonplanar seam line quads. + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + + char& flags = polygons.quadFlags(i); + + if ((flags & POLYFLAG_FRACTURE_SEAM) && !(flags & POLYFLAG_EXTERIOR)) { + + Vec4I& quad = polygons.quad(i); + + const bool edgePoly = mPointFlags[quad[0]] || mPointFlags[quad[1]] + || mPointFlags[quad[2]] || mPointFlags[quad[3]]; + + if (!edgePoly) continue; + + const Vec3s& p0 = mPoints[quad[0]]; + const Vec3s& p1 = mPoints[quad[1]]; + const Vec3s& p2 = mPoints[quad[2]]; + const Vec3s& p3 = mPoints[quad[3]]; + + if (!isPlanarQuad(p0, p1, p2, p3, 1e-6f)) { + flags |= POLYFLAG_SUBDIVIDED; + count++; + } + } + } + + mNumQuadsToDivide[n] = count; + } + } + +private: + PolygonPoolList * const mPolygonPoolList; + uint8_t const * const mPointFlags; + Vec3s const * const mPoints; + unsigned * const mNumQuadsToDivide; +}; // struct FlagAndCountQuadsToSubdivide + + +struct SubdivideQuads +{ + SubdivideQuads(PolygonPoolList& polygons, + const std::unique_ptr& points, + size_t pointCount, + std::unique_ptr& centroids, + std::unique_ptr& numQuadsToDivide, + std::unique_ptr& centroidOffsets) + : mPolygonPoolList(&polygons) + , mPoints(points.get()) + , mCentroids(centroids.get()) + , mNumQuadsToDivide(numQuadsToDivide.get()) + , mCentroidOffsets(centroidOffsets.get()) + , mPointCount(pointCount) + { + } + + void operator()(const tbb::blocked_range& range) const + { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + PolygonPool& polygons = (*mPolygonPoolList)[n]; + + const size_t nonplanarCount = size_t(mNumQuadsToDivide[n]); + + if (nonplanarCount > 0) { + + PolygonPool tmpPolygons; + tmpPolygons.resetQuads(polygons.numQuads() - nonplanarCount); + tmpPolygons.resetTriangles(polygons.numTriangles() + size_t(4) * nonplanarCount); + + size_t offset = mCentroidOffsets[n]; + + size_t triangleIdx = 0; + + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + + const char quadFlags = polygons.quadFlags(i); + if (!(quadFlags & POLYFLAG_SUBDIVIDED)) continue; + + unsigned newPointIdx = unsigned(offset + mPointCount); + + openvdb::Vec4I& quad = polygons.quad(i); + + mCentroids[offset] = (mPoints[quad[0]] + mPoints[quad[1]] + + mPoints[quad[2]] + mPoints[quad[3]]) * 0.25f; + + ++offset; + + { + Vec3I& triangle = tmpPolygons.triangle(triangleIdx); + + triangle[0] = quad[0]; + triangle[1] = newPointIdx; + triangle[2] = quad[3]; + + tmpPolygons.triangleFlags(triangleIdx) = quadFlags; + } + + ++triangleIdx; + + { + Vec3I& triangle = tmpPolygons.triangle(triangleIdx); + + triangle[0] = quad[0]; + triangle[1] = quad[1]; + triangle[2] = newPointIdx; + + tmpPolygons.triangleFlags(triangleIdx) = quadFlags; + } + + ++triangleIdx; + + { + Vec3I& triangle = tmpPolygons.triangle(triangleIdx); + + triangle[0] = quad[1]; + triangle[1] = quad[2]; + triangle[2] = newPointIdx; + + tmpPolygons.triangleFlags(triangleIdx) = quadFlags; + } + + + ++triangleIdx; + + { + Vec3I& triangle = tmpPolygons.triangle(triangleIdx); + + triangle[0] = quad[2]; + triangle[1] = quad[3]; + triangle[2] = newPointIdx; + + tmpPolygons.triangleFlags(triangleIdx) = quadFlags; + } + + ++triangleIdx; + + quad[0] = util::INVALID_IDX; // mark for deletion + } + + + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + tmpPolygons.triangle(triangleIdx) = polygons.triangle(i); + tmpPolygons.triangleFlags(triangleIdx) = polygons.triangleFlags(i); + ++triangleIdx; + } + + size_t quadIdx = 0; + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + openvdb::Vec4I& quad = polygons.quad(i); + + if (quad[0] != util::INVALID_IDX) { // ignore invalid quads + tmpPolygons.quad(quadIdx) = quad; + tmpPolygons.quadFlags(quadIdx) = polygons.quadFlags(i); + ++quadIdx; + } + } + + polygons.copy(tmpPolygons); + } + } + } + +private: + PolygonPoolList * const mPolygonPoolList; + Vec3s const * const mPoints; + Vec3s * const mCentroids; + unsigned * const mNumQuadsToDivide; + unsigned * const mCentroidOffsets; + size_t const mPointCount; +}; // struct SubdivideQuads + + +inline void +subdivideNonplanarSeamLineQuads( + PolygonPoolList& polygonPoolList, + size_t polygonPoolListSize, + PointList& pointList, + size_t& pointListSize, + std::vector& pointFlags) +{ + const tbb::blocked_range polygonPoolListRange(0, polygonPoolListSize); + + std::unique_ptr numQuadsToDivide(new unsigned[polygonPoolListSize]); + + tbb::parallel_for(polygonPoolListRange, + FlagAndCountQuadsToSubdivide(polygonPoolList, pointFlags, pointList, numQuadsToDivide)); + + std::unique_ptr centroidOffsets(new unsigned[polygonPoolListSize]); + + size_t centroidCount = 0; + + { + unsigned sum = 0; + for (size_t n = 0, N = polygonPoolListSize; n < N; ++n) { + centroidOffsets[n] = sum; + sum += numQuadsToDivide[n]; + } + centroidCount = size_t(sum); + } + + std::unique_ptr centroidList(new Vec3s[centroidCount]); + + tbb::parallel_for(polygonPoolListRange, + SubdivideQuads(polygonPoolList, pointList, pointListSize, + centroidList, numQuadsToDivide, centroidOffsets)); + + if (centroidCount > 0) { + + const size_t newPointListSize = centroidCount + pointListSize; + + std::unique_ptr newPointList(new openvdb::Vec3s[newPointListSize]); + + tbb::parallel_for(tbb::blocked_range(0, pointListSize), + CopyArray(newPointList.get(), pointList.get())); + + tbb::parallel_for(tbb::blocked_range(0, newPointListSize - pointListSize), + CopyArray(newPointList.get(), centroidList.get(), pointListSize)); + + pointListSize = newPointListSize; + pointList.swap(newPointList); + pointFlags.resize(pointListSize, 0); + } +} + + +struct ReviseSeamLineFlags +{ + ReviseSeamLineFlags(PolygonPoolList& polygons, + const std::vector& pointFlags) + : mPolygonPoolList(&polygons) + , mPointFlags(pointFlags.empty() ? nullptr : &pointFlags.front()) + { + } + + void operator()(const tbb::blocked_range& range) const + { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + PolygonPool& polygons = (*mPolygonPoolList)[n]; + + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + + char& flags = polygons.quadFlags(i); + + if (flags & POLYFLAG_FRACTURE_SEAM) { + + openvdb::Vec4I& verts = polygons.quad(i); + + const bool hasSeamLinePoint = + mPointFlags[verts[0]] || mPointFlags[verts[1]] || + mPointFlags[verts[2]] || mPointFlags[verts[3]]; + + if (!hasSeamLinePoint) { + flags &= ~POLYFLAG_FRACTURE_SEAM; + } + } + } // end quad loop + + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + + char& flags = polygons.triangleFlags(i); + + if (flags & POLYFLAG_FRACTURE_SEAM) { + + openvdb::Vec3I& verts = polygons.triangle(i); + + const bool hasSeamLinePoint = + mPointFlags[verts[0]] || mPointFlags[verts[1]] || mPointFlags[verts[2]]; + + if (!hasSeamLinePoint) { + flags &= ~POLYFLAG_FRACTURE_SEAM; + } + + } + } // end triangle loop + + } // end polygon pool loop + } + +private: + PolygonPoolList * const mPolygonPoolList; + uint8_t const * const mPointFlags; +}; // struct ReviseSeamLineFlags + + +inline void +reviseSeamLineFlags(PolygonPoolList& polygonPoolList, size_t polygonPoolListSize, + std::vector& pointFlags) +{ + tbb::parallel_for(tbb::blocked_range(0, polygonPoolListSize), + ReviseSeamLineFlags(polygonPoolList, pointFlags)); +} + + +//////////////////////////////////////// + + +template +struct MaskDisorientedTrianglePoints +{ + MaskDisorientedTrianglePoints(const InputTreeType& inputTree, const PolygonPoolList& polygons, + const PointList& pointList, std::unique_ptr& pointMask, + const math::Transform& transform, bool invertSurfaceOrientation) + : mInputTree(&inputTree) + , mPolygonPoolList(&polygons) + , mPointList(&pointList) + , mPointMask(pointMask.get()) + , mTransform(transform) + , mInvertSurfaceOrientation(invertSurfaceOrientation) + { + } + + void operator()(const tbb::blocked_range& range) const + { + using ValueType = typename InputTreeType::LeafNodeType::ValueType; + + tree::ValueAccessor inputAcc(*mInputTree); + Vec3s centroid, normal; + Coord ijk; + + const bool invertGradientDir = mInvertSurfaceOrientation || isBoolValue(); + + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + + const PolygonPool& polygons = (*mPolygonPoolList)[n]; + + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + + const Vec3I& verts = polygons.triangle(i); + + const Vec3s& v0 = (*mPointList)[verts[0]]; + const Vec3s& v1 = (*mPointList)[verts[1]]; + const Vec3s& v2 = (*mPointList)[verts[2]]; + + normal = (v2 - v0).cross((v1 - v0)); + normal.normalize(); + + centroid = (v0 + v1 + v2) * (1.0f / 3.0f); + ijk = mTransform.worldToIndexCellCentered(centroid); + + Vec3s dir( math::ISGradient::result(inputAcc, ijk) ); + dir.normalize(); + + if (invertGradientDir) { + dir = -dir; + } + + // check if the angle is obtuse + if (dir.dot(normal) < -0.5f) { + // Concurrent writes to same memory address can occur, but + // all threads are writing the same value and char is atomic. + // (It is extremely rare that disoriented triangles share points, + // false sharing related performance impacts are not a concern.) + mPointMask[verts[0]] = 1; + mPointMask[verts[1]] = 1; + mPointMask[verts[2]] = 1; + } + + } // end triangle loop + + } // end polygon pool loop + } + +private: + InputTreeType const * const mInputTree; + PolygonPoolList const * const mPolygonPoolList; + PointList const * const mPointList; + uint8_t * const mPointMask; + math::Transform const mTransform; + bool const mInvertSurfaceOrientation; +}; // struct MaskDisorientedTrianglePoints + + +template +inline void +relaxDisorientedTriangles( + bool invertSurfaceOrientation, + const InputTree& inputTree, + const math::Transform& transform, + PolygonPoolList& polygonPoolList, + size_t polygonPoolListSize, + PointList& pointList, + const size_t pointListSize) +{ + const tbb::blocked_range polygonPoolListRange(0, polygonPoolListSize); + + std::unique_ptr pointMask(new uint8_t[pointListSize]); + fillArray(pointMask.get(), uint8_t(0), pointListSize); + + tbb::parallel_for(polygonPoolListRange, + MaskDisorientedTrianglePoints( + inputTree, polygonPoolList, pointList, pointMask, transform, invertSurfaceOrientation)); + + std::unique_ptr pointUpdates(new uint8_t[pointListSize]); + fillArray(pointUpdates.get(), uint8_t(0), pointListSize); + + std::unique_ptr newPoints(new Vec3s[pointListSize]); + fillArray(newPoints.get(), Vec3s(0.0f, 0.0f, 0.0f), pointListSize); + + for (size_t n = 0, N = polygonPoolListSize; n < N; ++n) { + + PolygonPool& polygons = polygonPoolList[n]; + + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + openvdb::Vec4I& verts = polygons.quad(i); + + for (int v = 0; v < 4; ++v) { + + const unsigned pointIdx = verts[v]; + + if (pointMask[pointIdx] == 1) { + + newPoints[pointIdx] += + pointList[verts[0]] + pointList[verts[1]] + + pointList[verts[2]] + pointList[verts[3]]; + + pointUpdates[pointIdx] = uint8_t(pointUpdates[pointIdx] + 4); + } + } + } + + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + openvdb::Vec3I& verts = polygons.triangle(i); + + for (int v = 0; v < 3; ++v) { + + const unsigned pointIdx = verts[v]; + + if (pointMask[pointIdx] == 1) { + newPoints[pointIdx] += + pointList[verts[0]] + pointList[verts[1]] + pointList[verts[2]]; + + pointUpdates[pointIdx] = uint8_t(pointUpdates[pointIdx] + 3); + } + } + } + } + + for (size_t n = 0, N = pointListSize; n < N; ++n) { + if (pointUpdates[n] > 0) { + const double weight = 1.0 / double(pointUpdates[n]); + pointList[n] = newPoints[n] * float(weight); + } + } +} + + +} // volume_to_mesh_internal namespace + + +//////////////////////////////////////// + + +inline +PolygonPool::PolygonPool() + : mNumQuads(0) + , mNumTriangles(0) + , mQuads(nullptr) + , mTriangles(nullptr) + , mQuadFlags(nullptr) + , mTriangleFlags(nullptr) +{ +} + + +inline +PolygonPool::PolygonPool(const size_t numQuads, const size_t numTriangles) + : mNumQuads(numQuads) + , mNumTriangles(numTriangles) + , mQuads(new openvdb::Vec4I[mNumQuads]) + , mTriangles(new openvdb::Vec3I[mNumTriangles]) + , mQuadFlags(new char[mNumQuads]) + , mTriangleFlags(new char[mNumTriangles]) +{ +} + + +inline void +PolygonPool::copy(const PolygonPool& rhs) +{ + resetQuads(rhs.numQuads()); + resetTriangles(rhs.numTriangles()); + + for (size_t i = 0; i < mNumQuads; ++i) { + mQuads[i] = rhs.mQuads[i]; + mQuadFlags[i] = rhs.mQuadFlags[i]; + } + + for (size_t i = 0; i < mNumTriangles; ++i) { + mTriangles[i] = rhs.mTriangles[i]; + mTriangleFlags[i] = rhs.mTriangleFlags[i]; + } +} + + +inline void +PolygonPool::resetQuads(size_t size) +{ + mNumQuads = size; + mQuads.reset(new openvdb::Vec4I[mNumQuads]); + mQuadFlags.reset(new char[mNumQuads]); +} + + +inline void +PolygonPool::clearQuads() +{ + mNumQuads = 0; + mQuads.reset(nullptr); + mQuadFlags.reset(nullptr); +} + + +inline void +PolygonPool::resetTriangles(size_t size) +{ + mNumTriangles = size; + mTriangles.reset(new openvdb::Vec3I[mNumTriangles]); + mTriangleFlags.reset(new char[mNumTriangles]); +} + + +inline void +PolygonPool::clearTriangles() +{ + mNumTriangles = 0; + mTriangles.reset(nullptr); + mTriangleFlags.reset(nullptr); +} + + +inline bool +PolygonPool::trimQuads(const size_t n, bool reallocate) +{ + if (!(n < mNumQuads)) return false; + + if (reallocate) { + + if (n == 0) { + mQuads.reset(nullptr); + } else { + + std::unique_ptr quads(new openvdb::Vec4I[n]); + std::unique_ptr flags(new char[n]); + + for (size_t i = 0; i < n; ++i) { + quads[i] = mQuads[i]; + flags[i] = mQuadFlags[i]; + } + + mQuads.swap(quads); + mQuadFlags.swap(flags); + } + } + + mNumQuads = n; + return true; +} + + +inline bool +PolygonPool::trimTrinagles(const size_t n, bool reallocate) +{ + if (!(n < mNumTriangles)) return false; + + if (reallocate) { + + if (n == 0) { + mTriangles.reset(nullptr); + } else { + + std::unique_ptr triangles(new openvdb::Vec3I[n]); + std::unique_ptr flags(new char[n]); + + for (size_t i = 0; i < n; ++i) { + triangles[i] = mTriangles[i]; + flags[i] = mTriangleFlags[i]; + } + + mTriangles.swap(triangles); + mTriangleFlags.swap(flags); + } + } + + mNumTriangles = n; + return true; +} + + +//////////////////////////////////////// + + +inline +VolumeToMesh::VolumeToMesh(double isovalue, double adaptivity, bool relaxDisorientedTriangles) + : mPoints(nullptr) + , mPolygons() + , mPointListSize(0) + , mSeamPointListSize(0) + , mPolygonPoolListSize(0) + , mIsovalue(isovalue) + , mPrimAdaptivity(adaptivity) + , mSecAdaptivity(0.0) + , mRefGrid(GridBase::ConstPtr()) + , mSurfaceMaskGrid(GridBase::ConstPtr()) + , mAdaptivityGrid(GridBase::ConstPtr()) + , mAdaptivityMaskTree(TreeBase::ConstPtr()) + , mRefSignTree(TreeBase::Ptr()) + , mRefIdxTree(TreeBase::Ptr()) + , mInvertSurfaceMask(false) + , mRelaxDisorientedTriangles(relaxDisorientedTriangles) + , mQuantizedSeamPoints(nullptr) + , mPointFlags(0) +{ +} + + +inline void +VolumeToMesh::setRefGrid(const GridBase::ConstPtr& grid, double secAdaptivity) +{ + mRefGrid = grid; + mSecAdaptivity = secAdaptivity; + + // Clear out old auxiliary data + mRefSignTree = TreeBase::Ptr(); + mRefIdxTree = TreeBase::Ptr(); + mSeamPointListSize = 0; + mQuantizedSeamPoints.reset(nullptr); +} + + +inline void +VolumeToMesh::setSurfaceMask(const GridBase::ConstPtr& mask, bool invertMask) +{ + mSurfaceMaskGrid = mask; + mInvertSurfaceMask = invertMask; +} + + +inline void +VolumeToMesh::setSpatialAdaptivity(const GridBase::ConstPtr& grid) +{ + mAdaptivityGrid = grid; +} + + +inline void +VolumeToMesh::setAdaptivityMask(const TreeBase::ConstPtr& tree) +{ + mAdaptivityMaskTree = tree; +} + + +template +inline void +VolumeToMesh::operator()(const InputGridType& inputGrid) +{ + // input data types + + using InputTreeType = typename InputGridType::TreeType; + using InputLeafNodeType = typename InputTreeType::LeafNodeType; + using InputValueType = typename InputLeafNodeType::ValueType; + + // auxiliary data types + + using FloatTreeType = typename InputTreeType::template ValueConverter::Type; + using FloatGridType = Grid; + using BoolTreeType = typename InputTreeType::template ValueConverter::Type; + using Int16TreeType = typename InputTreeType::template ValueConverter::Type; + using Int16LeafNodeType = typename Int16TreeType::LeafNodeType; + using Index32TreeType = typename InputTreeType::template ValueConverter::Type; + using Index32LeafNodeType = typename Index32TreeType::LeafNodeType; + + // clear old data + mPointListSize = 0; + mPoints.reset(); + mPolygonPoolListSize = 0; + mPolygons.reset(); + mPointFlags.clear(); + + // settings + + const math::Transform& transform = inputGrid.transform(); + const InputValueType isovalue = InputValueType(mIsovalue); + const float adaptivityThreshold = float(mPrimAdaptivity); + const bool adaptive = mPrimAdaptivity > 1e-7 || mSecAdaptivity > 1e-7; + + // The default surface orientation is setup for level set and bool/mask grids. + // Boolean grids are handled correctly by their value type. Signed distance fields, + // unsigned distance fields and fog volumes have the same value type but use different + // inside value classifications. + const bool invertSurfaceOrientation = (!volume_to_mesh_internal::isBoolValue() + && (inputGrid.getGridClass() != openvdb::GRID_LEVEL_SET)); + + // references, masks and auxiliary data + + const InputTreeType& inputTree = inputGrid.tree(); + + BoolTreeType intersectionTree(false), adaptivityMask(false); + + if (mAdaptivityMaskTree && mAdaptivityMaskTree->type() == BoolTreeType::treeType()) { + const BoolTreeType *refAdaptivityMask= + static_cast(mAdaptivityMaskTree.get()); + adaptivityMask.topologyUnion(*refAdaptivityMask); + } + + Int16TreeType signFlagsTree(0); + Index32TreeType pointIndexTree(std::numeric_limits::max()); + + + // collect auxiliary data + + volume_to_mesh_internal::identifySurfaceIntersectingVoxels( + intersectionTree, inputTree, isovalue); + + volume_to_mesh_internal::applySurfaceMask(intersectionTree, adaptivityMask, + inputGrid, mSurfaceMaskGrid, mInvertSurfaceMask, isovalue); + + if (intersectionTree.empty()) return; + + volume_to_mesh_internal::computeAuxiliaryData( + signFlagsTree, pointIndexTree, intersectionTree, inputTree, isovalue); + + intersectionTree.clear(); + + std::vector pointIndexLeafNodes; + pointIndexTree.getNodes(pointIndexLeafNodes); + + std::vector signFlagsLeafNodes; + signFlagsTree.getNodes(signFlagsLeafNodes); + + const tbb::blocked_range auxiliaryLeafNodeRange(0, signFlagsLeafNodes.size()); + + + // optionally collect auxiliary data from a reference volume. + + Int16TreeType* refSignFlagsTree = nullptr; + Index32TreeType* refPointIndexTree = nullptr; + InputTreeType const* refInputTree = nullptr; + + if (mRefGrid && mRefGrid->type() == InputGridType::gridType()) { + + const InputGridType* refGrid = static_cast(mRefGrid.get()); + refInputTree = &refGrid->tree(); + + if (!mRefSignTree && !mRefIdxTree) { + + // first time, collect and cache auxiliary data. + + typename Int16TreeType::Ptr refSignFlagsTreePt(new Int16TreeType(0)); + typename Index32TreeType::Ptr refPointIndexTreePt( + new Index32TreeType(std::numeric_limits::max())); + + BoolTreeType refIntersectionTree(false); + + volume_to_mesh_internal::identifySurfaceIntersectingVoxels( + refIntersectionTree, *refInputTree, isovalue); + + volume_to_mesh_internal::computeAuxiliaryData(*refSignFlagsTreePt, + *refPointIndexTreePt, refIntersectionTree, *refInputTree, isovalue); + + mRefSignTree = refSignFlagsTreePt; + mRefIdxTree = refPointIndexTreePt; + } + + if (mRefSignTree && mRefIdxTree) { + + // get cached auxiliary data + + refSignFlagsTree = static_cast(mRefSignTree.get()); + refPointIndexTree = static_cast(mRefIdxTree.get()); + } + + + if (refSignFlagsTree && refPointIndexTree) { + + // generate seam line sample points + + volume_to_mesh_internal::markSeamLineData(signFlagsTree, *refSignFlagsTree); + + if (mSeamPointListSize == 0) { + + // count unique points on reference surface + + std::vector refSignFlagsLeafNodes; + refSignFlagsTree->getNodes(refSignFlagsLeafNodes); + + std::unique_ptr leafNodeOffsets( + new Index32[refSignFlagsLeafNodes.size()]); + + tbb::parallel_for(tbb::blocked_range(0, refSignFlagsLeafNodes.size()), + volume_to_mesh_internal::LeafNodePointCount( + refSignFlagsLeafNodes, leafNodeOffsets)); + + { + Index32 count = 0; + for (size_t n = 0, N = refSignFlagsLeafNodes.size(); n < N; ++n) { + const Index32 tmp = leafNodeOffsets[n]; + leafNodeOffsets[n] = count; + count += tmp; + } + mSeamPointListSize = size_t(count); + } + + if (mSeamPointListSize != 0) { + + mQuantizedSeamPoints.reset(new uint32_t[mSeamPointListSize]); + + memset(mQuantizedSeamPoints.get(), 0, sizeof(uint32_t) * mSeamPointListSize); + + std::vector refPointIndexLeafNodes; + refPointIndexTree->getNodes(refPointIndexLeafNodes); + + tbb::parallel_for(tbb::blocked_range(0, refPointIndexLeafNodes.size()), + volume_to_mesh_internal::MapPoints( + refPointIndexLeafNodes, refSignFlagsLeafNodes, leafNodeOffsets)); + } + } + + if (mSeamPointListSize != 0) { + + tbb::parallel_for(auxiliaryLeafNodeRange, + volume_to_mesh_internal::SeamLineWeights( + signFlagsLeafNodes, inputTree, *refPointIndexTree, *refSignFlagsTree, + mQuantizedSeamPoints.get(), isovalue)); + } + } + } + + const bool referenceMeshing = refSignFlagsTree && refPointIndexTree && refInputTree; + + + // adapt and count unique points + + std::unique_ptr leafNodeOffsets(new Index32[signFlagsLeafNodes.size()]); + + if (adaptive) { + volume_to_mesh_internal::MergeVoxelRegions mergeOp( + inputGrid, pointIndexTree, pointIndexLeafNodes, signFlagsLeafNodes, + isovalue, adaptivityThreshold, invertSurfaceOrientation); + + if (mAdaptivityGrid && mAdaptivityGrid->type() == FloatGridType::gridType()) { + const FloatGridType* adaptivityGrid = + static_cast(mAdaptivityGrid.get()); + mergeOp.setSpatialAdaptivity(*adaptivityGrid); + } + + if (!adaptivityMask.empty()) { + mergeOp.setAdaptivityMask(adaptivityMask); + } + + if (referenceMeshing) { + mergeOp.setRefSignFlagsData(*refSignFlagsTree, float(mSecAdaptivity)); + } + + tbb::parallel_for(auxiliaryLeafNodeRange, mergeOp); + + volume_to_mesh_internal::AdaptiveLeafNodePointCount + op(pointIndexLeafNodes, signFlagsLeafNodes, leafNodeOffsets); + + tbb::parallel_for(auxiliaryLeafNodeRange, op); + + } else { + + volume_to_mesh_internal::LeafNodePointCount + op(signFlagsLeafNodes, leafNodeOffsets); + + tbb::parallel_for(auxiliaryLeafNodeRange, op); + } + + + { + Index32 pointCount = 0; + for (size_t n = 0, N = signFlagsLeafNodes.size(); n < N; ++n) { + const Index32 tmp = leafNodeOffsets[n]; + leafNodeOffsets[n] = pointCount; + pointCount += tmp; + } + + mPointListSize = size_t(pointCount); + mPoints.reset(new openvdb::Vec3s[mPointListSize]); + mPointFlags.clear(); + } + + + // compute points + + { + volume_to_mesh_internal::ComputePoints + op(mPoints.get(), inputTree, pointIndexLeafNodes, + signFlagsLeafNodes, leafNodeOffsets, transform, mIsovalue); + + if (referenceMeshing) { + mPointFlags.resize(mPointListSize); + op.setRefData(*refInputTree, *refPointIndexTree, *refSignFlagsTree, + mQuantizedSeamPoints.get(), &mPointFlags.front()); + } + + tbb::parallel_for(auxiliaryLeafNodeRange, op); + } + + + // compute polygons + + mPolygonPoolListSize = signFlagsLeafNodes.size(); + mPolygons.reset(new PolygonPool[mPolygonPoolListSize]); + + if (adaptive) { + + using PrimBuilder = volume_to_mesh_internal::AdaptivePrimBuilder; + + volume_to_mesh_internal::ComputePolygons + op(signFlagsLeafNodes, signFlagsTree, pointIndexTree, + mPolygons, invertSurfaceOrientation); + + if (referenceMeshing) { + op.setRefSignTree(refSignFlagsTree); + } + + tbb::parallel_for(auxiliaryLeafNodeRange, op); + + } else { + + using PrimBuilder = volume_to_mesh_internal::UniformPrimBuilder; + + volume_to_mesh_internal::ComputePolygons + op(signFlagsLeafNodes, signFlagsTree, pointIndexTree, + mPolygons, invertSurfaceOrientation); + + if (referenceMeshing) { + op.setRefSignTree(refSignFlagsTree); + } + + tbb::parallel_for(auxiliaryLeafNodeRange, op); + } + + + signFlagsTree.clear(); + pointIndexTree.clear(); + + + if (adaptive && mRelaxDisorientedTriangles) { + volume_to_mesh_internal::relaxDisorientedTriangles(invertSurfaceOrientation, + inputTree, transform, mPolygons, mPolygonPoolListSize, mPoints, mPointListSize); + } + + + if (referenceMeshing) { + volume_to_mesh_internal::subdivideNonplanarSeamLineQuads( + mPolygons, mPolygonPoolListSize, mPoints, mPointListSize, mPointFlags); + + volume_to_mesh_internal::reviseSeamLineFlags(mPolygons, mPolygonPoolListSize, mPointFlags); + } + +} + + +//////////////////////////////////////// + + +//{ +/// @cond OPENVDB_VOLUME_TO_MESH_INTERNAL + +/// @internal This overload is enabled only for grids with a scalar ValueType. +template +inline typename std::enable_if::value, void>::type +doVolumeToMesh( + const GridType& grid, + std::vector& points, + std::vector& triangles, + std::vector& quads, + double isovalue, + double adaptivity, + bool relaxDisorientedTriangles) +{ + VolumeToMesh mesher(isovalue, adaptivity, relaxDisorientedTriangles); + mesher(grid); + + // Preallocate the point list + points.clear(); + points.resize(mesher.pointListSize()); + + { // Copy points + volume_to_mesh_internal::PointListCopy ptnCpy(mesher.pointList(), points); + tbb::parallel_for(tbb::blocked_range(0, points.size()), ptnCpy); + mesher.pointList().reset(nullptr); + } + + PolygonPoolList& polygonPoolList = mesher.polygonPoolList(); + + { // Preallocate primitive lists + size_t numQuads = 0, numTriangles = 0; + for (size_t n = 0, N = mesher.polygonPoolListSize(); n < N; ++n) { + openvdb::tools::PolygonPool& polygons = polygonPoolList[n]; + numTriangles += polygons.numTriangles(); + numQuads += polygons.numQuads(); + } + + triangles.clear(); + triangles.resize(numTriangles); + quads.clear(); + quads.resize(numQuads); + } + + // Copy primitives + size_t qIdx = 0, tIdx = 0; + for (size_t n = 0, N = mesher.polygonPoolListSize(); n < N; ++n) { + openvdb::tools::PolygonPool& polygons = polygonPoolList[n]; + + for (size_t i = 0, I = polygons.numQuads(); i < I; ++i) { + quads[qIdx++] = polygons.quad(i); + } + + for (size_t i = 0, I = polygons.numTriangles(); i < I; ++i) { + triangles[tIdx++] = polygons.triangle(i); + } + } +} + +/// @internal This overload is enabled only for grids that do not have a scalar ValueType. +template +inline typename std::enable_if::value, void>::type +doVolumeToMesh( + const GridType&, + std::vector&, + std::vector&, + std::vector&, + double, + double, + bool) +{ + OPENVDB_THROW(TypeError, "volume to mesh conversion is supported only for scalar grids"); +} + +/// @endcond +//} + + +template +inline void +volumeToMesh( + const GridType& grid, + std::vector& points, + std::vector& triangles, + std::vector& quads, + double isovalue, + double adaptivity, + bool relaxDisorientedTriangles) +{ + doVolumeToMesh(grid, points, triangles, quads, isovalue, adaptivity, relaxDisorientedTriangles); +} + + +template +inline void +volumeToMesh( + const GridType& grid, + std::vector& points, + std::vector& quads, + double isovalue) +{ + std::vector triangles; + doVolumeToMesh(grid, points, triangles, quads, isovalue, 0.0, true); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VOLUME_TO_MESH_HAS_BEEN_INCLUDED diff --git a/openvdb/tools/VolumeToSpheres.h b/openvdb/tools/VolumeToSpheres.h new file mode 100644 index 00000000..d7bce1ea --- /dev/null +++ b/openvdb/tools/VolumeToSpheres.h @@ -0,0 +1,1030 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tools/VolumeToSpheres.h +/// +/// @brief Fill a closed level set or fog volume with adaptively-sized spheres. + +#ifndef OPENVDB_TOOLS_VOLUME_TO_SPHERES_HAS_BEEN_INCLUDED +#define OPENVDB_TOOLS_VOLUME_TO_SPHERES_HAS_BEEN_INCLUDED + +#include +#include +#include "Morphology.h" // for erodeVoxels() +#include "PointScatter.h" +#include "LevelSetRebuild.h" +#include "LevelSetUtil.h" +#include "VolumeToMesh.h" + +#include +#include +#include +#include +#include + +#include // for std::min(), std::max() +#include // for std::sqrt() +#include // for std::numeric_limits +#include +#include +#include // for std::pair +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tools { + +/// @brief Fill a closed level set or fog volume with adaptively-sized spheres. +/// +/// @param grid a scalar grid that defines the surface to be filled with spheres +/// @param spheres an output array of 4-tuples representing the fitted spheres
+/// The first three components of each tuple specify the sphere center, +/// and the fourth specifies the radius. +/// The spheres are ordered by radius, from largest to smallest. +/// @param sphereCount lower and upper bounds on the number of spheres to be generated
+/// The actual number will be somewhere within the bounds. +/// @param overlapping toggle to allow spheres to overlap/intersect +/// @param minRadius the smallest allowable sphere size, in voxel units
+/// @param maxRadius the largest allowable sphere size, in voxel units +/// @param isovalue the voxel value that determines the surface of the volume
+/// The default value of zero works for signed distance fields, +/// while fog volumes require a larger positive value +/// (0.5 is a good initial guess). +/// @param instanceCount the number of interior points to consider for the sphere placement
+/// Increasing this count increases the chances of finding optimal +/// sphere sizes. +/// @param interrupter pointer to an object adhering to the util::NullInterrupter interface +/// +/// @note The minimum sphere count takes precedence over the minimum radius. +template +inline void +fillWithSpheres( + const GridT& grid, + std::vector& spheres, + const Vec2i& sphereCount = Vec2i(1, 50), + bool overlapping = false, + float minRadius = 1.0, + float maxRadius = std::numeric_limits::max(), + float isovalue = 0.0, + int instanceCount = 10000, + InterrupterT* interrupter = nullptr); + + +/// @deprecated Use the @a sphereCount overload instead. +template +OPENVDB_DEPRECATED +inline void +fillWithSpheres( + const GridT& grid, + std::vector& spheres, + int maxSphereCount, + bool overlapping = false, + float minRadius = 1.0, + float maxRadius = std::numeric_limits::max(), + float isovalue = 0.0, + int instanceCount = 10000, + InterrupterT* interrupter = nullptr); + + +//////////////////////////////////////// + + +/// @brief Accelerated closest surface point queries for narrow band level sets +/// @details Supports queries that originate at arbitrary world-space locations, +/// is not confined to the narrow band region of the input volume geometry. +template +class ClosestSurfacePoint +{ +public: + using Ptr = std::unique_ptr; + using TreeT = typename GridT::TreeType; + using BoolTreeT = typename TreeT::template ValueConverter::Type; + using Index32TreeT = typename TreeT::template ValueConverter::Type; + using Int16TreeT = typename TreeT::template ValueConverter::Type; + + /// @brief Extract surface points and construct a spatial acceleration structure. + /// + /// @return a null pointer if the initialization fails for any reason, + /// otherwise a unique pointer to a newly-allocated ClosestSurfacePoint object. + /// + /// @param grid a scalar level set or fog volume + /// @param isovalue the voxel value that determines the surface of the volume + /// The default value of zero works for signed distance fields, + /// while fog volumes require a larger positive value + /// (0.5 is a good initial guess). + /// @param interrupter pointer to an object adhering to the util::NullInterrupter interface. + template + static inline Ptr create(const GridT& grid, float isovalue = 0.0, + InterrupterT* interrupter = nullptr); + + /// @brief Compute the distance from each input point to its closest surface point. + /// @param points input list of points in world space + /// @param distances output list of closest surface point distances + inline bool search(const std::vector& points, std::vector& distances); + + /// @brief Overwrite each input point with its closest surface point. + /// @param points input/output list of points in world space + /// @param distances output list of closest surface point distances + inline bool searchAndReplace(std::vector& points, std::vector& distances); + + /// @brief Tree accessor + const Index32TreeT& indexTree() const { return *mIdxTreePt; } + /// @brief Tree accessor + const Int16TreeT& signTree() const { return *mSignTreePt; } + +private: + using Index32LeafT = typename Index32TreeT::LeafNodeType; + using IndexRange = std::pair; + + std::vector mLeafBoundingSpheres, mNodeBoundingSpheres; + std::vector mLeafRanges; + std::vector mLeafNodes; + PointList mSurfacePointList; + size_t mPointListSize = 0, mMaxNodeLeafs = 0; + typename Index32TreeT::Ptr mIdxTreePt; + typename Int16TreeT::Ptr mSignTreePt; + + ClosestSurfacePoint() = default; + template + inline bool initialize(const GridT&, float isovalue, InterrupterT*); + inline bool search(std::vector&, std::vector&, bool transformPoints); +}; + + +//////////////////////////////////////// + + +// Internal utility methods + +namespace v2s_internal { + +struct PointAccessor +{ + PointAccessor(std::vector& points) + : mPoints(points) + { + } + + void add(const Vec3R &pos) + { + mPoints.push_back(pos); + } +private: + std::vector& mPoints; +}; + + +template +class LeafOp +{ +public: + + LeafOp(std::vector& leafBoundingSpheres, + const std::vector& leafNodes, + const math::Transform& transform, + const PointList& surfacePointList); + + void run(bool threaded = true); + + + void operator()(const tbb::blocked_range&) const; + +private: + std::vector& mLeafBoundingSpheres; + const std::vector& mLeafNodes; + const math::Transform& mTransform; + const PointList& mSurfacePointList; +}; + +template +LeafOp::LeafOp( + std::vector& leafBoundingSpheres, + const std::vector& leafNodes, + const math::Transform& transform, + const PointList& surfacePointList) + : mLeafBoundingSpheres(leafBoundingSpheres) + , mLeafNodes(leafNodes) + , mTransform(transform) + , mSurfacePointList(surfacePointList) +{ +} + +template +void +LeafOp::run(bool threaded) +{ + if (threaded) { + tbb::parallel_for(tbb::blocked_range(0, mLeafNodes.size()), *this); + } else { + (*this)(tbb::blocked_range(0, mLeafNodes.size())); + } +} + +template +void +LeafOp::operator()(const tbb::blocked_range& range) const +{ + typename Index32LeafT::ValueOnCIter iter; + Vec3s avg; + + for (size_t n = range.begin(); n != range.end(); ++n) { + avg[0] = 0.0; + avg[1] = 0.0; + avg[2] = 0.0; + + int count = 0; + for (iter = mLeafNodes[n]->cbeginValueOn(); iter; ++iter) { + avg += mSurfacePointList[iter.getValue()]; + ++count; + } + if (count > 1) avg *= float(1.0 / double(count)); + + float maxDist = 0.0; + for (iter = mLeafNodes[n]->cbeginValueOn(); iter; ++iter) { + float tmpDist = (mSurfacePointList[iter.getValue()] - avg).lengthSqr(); + if (tmpDist > maxDist) maxDist = tmpDist; + } + + Vec4R& sphere = mLeafBoundingSpheres[n]; + sphere[0] = avg[0]; + sphere[1] = avg[1]; + sphere[2] = avg[2]; + sphere[3] = maxDist * 2.0; // padded radius + } +} + + +class NodeOp +{ +public: + using IndexRange = std::pair; + + NodeOp(std::vector& nodeBoundingSpheres, + const std::vector& leafRanges, + const std::vector& leafBoundingSpheres); + + inline void run(bool threaded = true); + + inline void operator()(const tbb::blocked_range&) const; + +private: + std::vector& mNodeBoundingSpheres; + const std::vector& mLeafRanges; + const std::vector& mLeafBoundingSpheres; +}; + +inline +NodeOp::NodeOp(std::vector& nodeBoundingSpheres, + const std::vector& leafRanges, + const std::vector& leafBoundingSpheres) + : mNodeBoundingSpheres(nodeBoundingSpheres) + , mLeafRanges(leafRanges) + , mLeafBoundingSpheres(leafBoundingSpheres) +{ +} + +inline void +NodeOp::run(bool threaded) +{ + if (threaded) { + tbb::parallel_for(tbb::blocked_range(0, mLeafRanges.size()), *this); + } else { + (*this)(tbb::blocked_range(0, mLeafRanges.size())); + } +} + +inline void +NodeOp::operator()(const tbb::blocked_range& range) const +{ + Vec3d avg, pos; + + for (size_t n = range.begin(); n != range.end(); ++n) { + + avg[0] = 0.0; + avg[1] = 0.0; + avg[2] = 0.0; + + int count = int(mLeafRanges[n].second) - int(mLeafRanges[n].first); + + for (size_t i = mLeafRanges[n].first; i < mLeafRanges[n].second; ++i) { + avg[0] += mLeafBoundingSpheres[i][0]; + avg[1] += mLeafBoundingSpheres[i][1]; + avg[2] += mLeafBoundingSpheres[i][2]; + } + + if (count > 1) avg *= float(1.0 / double(count)); + + + double maxDist = 0.0; + + for (size_t i = mLeafRanges[n].first; i < mLeafRanges[n].second; ++i) { + pos[0] = mLeafBoundingSpheres[i][0]; + pos[1] = mLeafBoundingSpheres[i][1]; + pos[2] = mLeafBoundingSpheres[i][2]; + const auto radiusSqr = mLeafBoundingSpheres[i][3]; + + double tmpDist = (pos - avg).lengthSqr() + radiusSqr; + if (tmpDist > maxDist) maxDist = tmpDist; + } + + Vec4R& sphere = mNodeBoundingSpheres[n]; + + sphere[0] = avg[0]; + sphere[1] = avg[1]; + sphere[2] = avg[2]; + sphere[3] = maxDist * 2.0; // padded radius + } +} + + +//////////////////////////////////////// + + +template +class ClosestPointDist +{ +public: + using IndexRange = std::pair; + + ClosestPointDist( + std::vector& instancePoints, + std::vector& instanceDistances, + const PointList& surfacePointList, + const std::vector& leafNodes, + const std::vector& leafRanges, + const std::vector& leafBoundingSpheres, + const std::vector& nodeBoundingSpheres, + size_t maxNodeLeafs, + bool transformPoints = false); + + + void run(bool threaded = true); + + + void operator()(const tbb::blocked_range&) const; + +private: + + void evalLeaf(size_t index, const Index32LeafT& leaf) const; + void evalNode(size_t pointIndex, size_t nodeIndex) const; + + + std::vector& mInstancePoints; + std::vector& mInstanceDistances; + + const PointList& mSurfacePointList; + + const std::vector& mLeafNodes; + const std::vector& mLeafRanges; + const std::vector& mLeafBoundingSpheres; + const std::vector& mNodeBoundingSpheres; + + std::vector mLeafDistances, mNodeDistances; + + const bool mTransformPoints; + size_t mClosestPointIndex; +};// ClosestPointDist + + +template +ClosestPointDist::ClosestPointDist( + std::vector& instancePoints, + std::vector& instanceDistances, + const PointList& surfacePointList, + const std::vector& leafNodes, + const std::vector& leafRanges, + const std::vector& leafBoundingSpheres, + const std::vector& nodeBoundingSpheres, + size_t maxNodeLeafs, + bool transformPoints) + : mInstancePoints(instancePoints) + , mInstanceDistances(instanceDistances) + , mSurfacePointList(surfacePointList) + , mLeafNodes(leafNodes) + , mLeafRanges(leafRanges) + , mLeafBoundingSpheres(leafBoundingSpheres) + , mNodeBoundingSpheres(nodeBoundingSpheres) + , mLeafDistances(maxNodeLeafs, 0.0) + , mNodeDistances(leafRanges.size(), 0.0) + , mTransformPoints(transformPoints) + , mClosestPointIndex(0) +{ +} + + +template +void +ClosestPointDist::run(bool threaded) +{ + if (threaded) { + tbb::parallel_for(tbb::blocked_range(0, mInstancePoints.size()), *this); + } else { + (*this)(tbb::blocked_range(0, mInstancePoints.size())); + } +} + +template +void +ClosestPointDist::evalLeaf(size_t index, const Index32LeafT& leaf) const +{ + typename Index32LeafT::ValueOnCIter iter; + const Vec3s center = mInstancePoints[index]; + size_t& closestPointIndex = const_cast(mClosestPointIndex); + + for (iter = leaf.cbeginValueOn(); iter; ++iter) { + + const Vec3s& point = mSurfacePointList[iter.getValue()]; + float tmpDist = (point - center).lengthSqr(); + + if (tmpDist < mInstanceDistances[index]) { + mInstanceDistances[index] = tmpDist; + closestPointIndex = iter.getValue(); + } + } +} + + +template +void +ClosestPointDist::evalNode(size_t pointIndex, size_t nodeIndex) const +{ + if (nodeIndex >= mLeafRanges.size()) return; + + const Vec3R& pos = mInstancePoints[pointIndex]; + float minDist = mInstanceDistances[pointIndex]; + size_t minDistIdx = 0; + Vec3R center; + bool updatedDist = false; + + for (size_t i = mLeafRanges[nodeIndex].first, n = 0; + i < mLeafRanges[nodeIndex].second; ++i, ++n) + { + float& distToLeaf = const_cast(mLeafDistances[n]); + + center[0] = mLeafBoundingSpheres[i][0]; + center[1] = mLeafBoundingSpheres[i][1]; + center[2] = mLeafBoundingSpheres[i][2]; + const auto radiusSqr = mLeafBoundingSpheres[i][3]; + + distToLeaf = float(std::max(0.0, (pos - center).lengthSqr() - radiusSqr)); + + if (distToLeaf < minDist) { + minDist = distToLeaf; + minDistIdx = i; + updatedDist = true; + } + } + + if (!updatedDist) return; + + evalLeaf(pointIndex, *mLeafNodes[minDistIdx]); + + for (size_t i = mLeafRanges[nodeIndex].first, n = 0; + i < mLeafRanges[nodeIndex].second; ++i, ++n) + { + if (mLeafDistances[n] < mInstanceDistances[pointIndex] && i != minDistIdx) { + evalLeaf(pointIndex, *mLeafNodes[i]); + } + } +} + + +template +void +ClosestPointDist::operator()(const tbb::blocked_range& range) const +{ + Vec3R center; + for (size_t n = range.begin(); n != range.end(); ++n) { + + const Vec3R& pos = mInstancePoints[n]; + float minDist = mInstanceDistances[n]; + size_t minDistIdx = 0; + + for (size_t i = 0, I = mNodeDistances.size(); i < I; ++i) { + float& distToNode = const_cast(mNodeDistances[i]); + + center[0] = mNodeBoundingSpheres[i][0]; + center[1] = mNodeBoundingSpheres[i][1]; + center[2] = mNodeBoundingSpheres[i][2]; + const auto radiusSqr = mNodeBoundingSpheres[i][3]; + + distToNode = float(std::max(0.0, (pos - center).lengthSqr() - radiusSqr)); + + if (distToNode < minDist) { + minDist = distToNode; + minDistIdx = i; + } + } + + evalNode(n, minDistIdx); + + for (size_t i = 0, I = mNodeDistances.size(); i < I; ++i) { + if (mNodeDistances[i] < mInstanceDistances[n] && i != minDistIdx) { + evalNode(n, i); + } + } + + mInstanceDistances[n] = std::sqrt(mInstanceDistances[n]); + + if (mTransformPoints) mInstancePoints[n] = mSurfacePointList[mClosestPointIndex]; + } +} + + +class UpdatePoints +{ +public: + UpdatePoints( + const Vec4s& sphere, + const std::vector& points, + std::vector& distances, + std::vector& mask, + bool overlapping); + + float radius() const { return mRadius; } + int index() const { return mIndex; } + + inline void run(bool threaded = true); + + + UpdatePoints(UpdatePoints&, tbb::split); + inline void operator()(const tbb::blocked_range& range); + void join(const UpdatePoints& rhs) + { + if (rhs.mRadius > mRadius) { + mRadius = rhs.mRadius; + mIndex = rhs.mIndex; + } + } + +private: + const Vec4s& mSphere; + const std::vector& mPoints; + std::vector& mDistances; + std::vector& mMask; + bool mOverlapping; + float mRadius; + int mIndex; +}; + +inline +UpdatePoints::UpdatePoints( + const Vec4s& sphere, + const std::vector& points, + std::vector& distances, + std::vector& mask, + bool overlapping) + : mSphere(sphere) + , mPoints(points) + , mDistances(distances) + , mMask(mask) + , mOverlapping(overlapping) + , mRadius(0.0) + , mIndex(0) +{ +} + +inline +UpdatePoints::UpdatePoints(UpdatePoints& rhs, tbb::split) + : mSphere(rhs.mSphere) + , mPoints(rhs.mPoints) + , mDistances(rhs.mDistances) + , mMask(rhs.mMask) + , mOverlapping(rhs.mOverlapping) + , mRadius(rhs.mRadius) + , mIndex(rhs.mIndex) +{ +} + +inline void +UpdatePoints::run(bool threaded) +{ + if (threaded) { + tbb::parallel_reduce(tbb::blocked_range(0, mPoints.size()), *this); + } else { + (*this)(tbb::blocked_range(0, mPoints.size())); + } +} + +inline void +UpdatePoints::operator()(const tbb::blocked_range& range) +{ + Vec3s pos; + for (size_t n = range.begin(); n != range.end(); ++n) { + if (mMask[n]) continue; + + pos.x() = float(mPoints[n].x()) - mSphere[0]; + pos.y() = float(mPoints[n].y()) - mSphere[1]; + pos.z() = float(mPoints[n].z()) - mSphere[2]; + + float dist = pos.length(); + + if (dist < mSphere[3]) { + mMask[n] = 1; + continue; + } + + if (!mOverlapping) { + mDistances[n] = std::min(mDistances[n], (dist - mSphere[3])); + } + + if (mDistances[n] > mRadius) { + mRadius = mDistances[n]; + mIndex = int(n); + } + } +} + + +} // namespace v2s_internal + + +//////////////////////////////////////// + + +template +inline void +fillWithSpheres( + const GridT& grid, + std::vector& spheres, + int maxSphereCount, + bool overlapping, + float minRadius, + float maxRadius, + float isovalue, + int instanceCount, + InterrupterT* interrupter) +{ + fillWithSpheres(grid, spheres, Vec2i(1, maxSphereCount), overlapping, + minRadius, maxRadius, isovalue, instanceCount, interrupter); +} + + +template +inline void +fillWithSpheres( + const GridT& grid, + std::vector& spheres, + const Vec2i& sphereCount, + bool overlapping, + float minRadius, + float maxRadius, + float isovalue, + int instanceCount, + InterrupterT* interrupter) +{ + spheres.clear(); + + if (grid.empty()) return; + + const int + minSphereCount = sphereCount[0], + maxSphereCount = sphereCount[1]; + if ((minSphereCount > maxSphereCount) || (maxSphereCount < 1)) { + OPENVDB_LOG_WARN("fillWithSpheres: minimum sphere count (" + << minSphereCount << ") exceeds maximum count (" << maxSphereCount << ")"); + return; + } + spheres.reserve(maxSphereCount); + + auto gridPtr = grid.copy(); // shallow copy + + if (gridPtr->getGridClass() == GRID_LEVEL_SET) { + // Clamp the isovalue to the level set's background value minus epsilon. + // (In a valid narrow-band level set, all voxels, including background voxels, + // have values less than or equal to the background value, so an isovalue + // greater than or equal to the background value would produce a mask with + // effectively infinite extent.) + isovalue = std::min(isovalue, + static_cast(gridPtr->background() - math::Tolerance::value())); + } else if (gridPtr->getGridClass() == GRID_FOG_VOLUME) { + // Clamp the isovalue of a fog volume between epsilon and one, + // again to avoid a mask with infinite extent. (Recall that + // fog volume voxel values vary from zero outside to one inside.) + isovalue = math::Clamp(isovalue, math::Tolerance::value(), 1.f); + } + + // ClosestSurfacePoint is inaccurate for small grids. + // Resample the input grid if it is too small. + auto numVoxels = gridPtr->activeVoxelCount(); + if (numVoxels < 10000) { + const auto scale = 1.0 / math::Cbrt(2.0 * 10000.0 / double(numVoxels)); + auto scaledXform = gridPtr->transform().copy(); + scaledXform->preScale(scale); + + auto newGridPtr = levelSetRebuild(*gridPtr, isovalue, + LEVEL_SET_HALF_WIDTH, LEVEL_SET_HALF_WIDTH, scaledXform.get(), interrupter); + + const auto newNumVoxels = newGridPtr->activeVoxelCount(); + if (newNumVoxels > numVoxels) { + OPENVDB_LOG_DEBUG_RUNTIME("fillWithSpheres: resampled input grid from " + << numVoxels << " voxel" << (numVoxels == 1 ? "" : "s") + << " to " << newNumVoxels << " voxel" << (newNumVoxels == 1 ? "" : "s")); + gridPtr = newGridPtr; + numVoxels = newNumVoxels; + } + } + + const bool addNarrowBandPoints = (numVoxels < 10000); + int instances = std::max(instanceCount, maxSphereCount); + + using TreeT = typename GridT::TreeType; + using BoolTreeT = typename TreeT::template ValueConverter::Type; + using Int16TreeT = typename TreeT::template ValueConverter::Type; + + using RandGen = std::mersenne_twister_engine; // mt11213b + RandGen mtRand(/*seed=*/0); + + const TreeT& tree = gridPtr->tree(); + math::Transform transform = gridPtr->transform(); + + std::vector instancePoints; + { + // Compute a mask of the voxels enclosed by the isosurface. + typename Grid::Ptr interiorMaskPtr; + if (gridPtr->getGridClass() == GRID_LEVEL_SET) { + interiorMaskPtr = sdfInteriorMask(*gridPtr, isovalue); + } else { + // For non-level-set grids, the interior mask comprises the active voxels. + interiorMaskPtr = typename Grid::Ptr(Grid::create(false)); + interiorMaskPtr->setTransform(transform.copy()); + interiorMaskPtr->tree().topologyUnion(tree); + } + + if (interrupter && interrupter->wasInterrupted()) return; + + // If the interior mask is small and eroding it results in an empty grid, + // use the uneroded mask instead. (But if the minimum sphere count is zero, + // then eroding away the mask is acceptable.) + if (!addNarrowBandPoints || (minSphereCount <= 0)) { + erodeVoxels(interiorMaskPtr->tree(), 1); + } else { + auto& maskTree = interiorMaskPtr->tree(); + auto copyOfTree = StaticPtrCast(maskTree.copy()); + erodeVoxels(maskTree, 1); + if (maskTree.empty()) { interiorMaskPtr->setTree(copyOfTree); } + } + + // Scatter candidate sphere centroids (instancePoints) + instancePoints.reserve(instances); + v2s_internal::PointAccessor ptnAcc(instancePoints); + + const auto scatterCount = Index64(addNarrowBandPoints ? (instances / 2) : instances); + + UniformPointScatter scatter( + ptnAcc, scatterCount, mtRand, 1.0, interrupter); + scatter(*interiorMaskPtr); + } + + if (interrupter && interrupter->wasInterrupted()) return; + + auto csp = ClosestSurfacePoint::create(*gridPtr, isovalue, interrupter); + if (!csp) return; + + // Add extra instance points in the interior narrow band. + if (instancePoints.size() < size_t(instances)) { + const Int16TreeT& signTree = csp->signTree(); + for (auto leafIt = signTree.cbeginLeaf(); leafIt; ++leafIt) { + for (auto it = leafIt->cbeginValueOn(); it; ++it) { + const int flags = int(it.getValue()); + if (!(volume_to_mesh_internal::EDGES & flags) + && (volume_to_mesh_internal::INSIDE & flags)) + { + instancePoints.push_back(transform.indexToWorld(it.getCoord())); + } + if (instancePoints.size() == size_t(instances)) break; + } + if (instancePoints.size() == size_t(instances)) break; + } + } + + if (interrupter && interrupter->wasInterrupted()) return; + + // Assign a radius to each candidate sphere. The radius is the world-space + // distance from the sphere's center to the closest surface point. + std::vector instanceRadius; + if (!csp->search(instancePoints, instanceRadius)) return; + + float largestRadius = 0.0; + int largestRadiusIdx = 0; + for (size_t n = 0, N = instancePoints.size(); n < N; ++n) { + if (instanceRadius[n] > largestRadius) { + largestRadius = instanceRadius[n]; + largestRadiusIdx = int(n); + } + } + + std::vector instanceMask(instancePoints.size(), 0); + + minRadius = float(minRadius * transform.voxelSize()[0]); + maxRadius = float(maxRadius * transform.voxelSize()[0]); + + for (size_t s = 0, S = std::min(size_t(maxSphereCount), instancePoints.size()); s < S; ++s) { + + if (interrupter && interrupter->wasInterrupted()) return; + + largestRadius = std::min(maxRadius, largestRadius); + + if ((int(s) >= minSphereCount) && (largestRadius < minRadius)) break; + + const Vec4s sphere( + float(instancePoints[largestRadiusIdx].x()), + float(instancePoints[largestRadiusIdx].y()), + float(instancePoints[largestRadiusIdx].z()), + largestRadius); + + spheres.push_back(sphere); + instanceMask[largestRadiusIdx] = 1; + + v2s_internal::UpdatePoints op( + sphere, instancePoints, instanceRadius, instanceMask, overlapping); + op.run(); + + largestRadius = op.radius(); + largestRadiusIdx = op.index(); + } +} // fillWithSpheres + + +//////////////////////////////////////// + + +template +template +inline typename ClosestSurfacePoint::Ptr +ClosestSurfacePoint::create(const GridT& grid, float isovalue, InterrupterT* interrupter) +{ + auto csp = Ptr{new ClosestSurfacePoint}; + if (!csp->initialize(grid, isovalue, interrupter)) csp.reset(); + return csp; +} + + +template +template +inline bool +ClosestSurfacePoint::initialize( + const GridT& grid, float isovalue, InterrupterT* interrupter) +{ + using Index32LeafManagerT = tree::LeafManager; + using ValueT = typename GridT::ValueType; + + const TreeT& tree = grid.tree(); + const math::Transform& transform = grid.transform(); + + { // Extract surface point cloud + + BoolTreeT mask(false); + volume_to_mesh_internal::identifySurfaceIntersectingVoxels(mask, tree, ValueT(isovalue)); + + mSignTreePt.reset(new Int16TreeT(0)); + mIdxTreePt.reset(new Index32TreeT(std::numeric_limits::max())); + + + volume_to_mesh_internal::computeAuxiliaryData( + *mSignTreePt, *mIdxTreePt, mask, tree, ValueT(isovalue)); + + if (interrupter && interrupter->wasInterrupted()) return false; + + // count unique points + + using Int16LeafNodeType = typename Int16TreeT::LeafNodeType; + using Index32LeafNodeType = typename Index32TreeT::LeafNodeType; + + std::vector signFlagsLeafNodes; + mSignTreePt->getNodes(signFlagsLeafNodes); + + const tbb::blocked_range auxiliaryLeafNodeRange(0, signFlagsLeafNodes.size()); + + std::unique_ptr leafNodeOffsets(new Index32[signFlagsLeafNodes.size()]); + + tbb::parallel_for(auxiliaryLeafNodeRange, + volume_to_mesh_internal::LeafNodePointCount + (signFlagsLeafNodes, leafNodeOffsets)); + + { + Index32 pointCount = 0; + for (size_t n = 0, N = signFlagsLeafNodes.size(); n < N; ++n) { + const Index32 tmp = leafNodeOffsets[n]; + leafNodeOffsets[n] = pointCount; + pointCount += tmp; + } + + mPointListSize = size_t(pointCount); + mSurfacePointList.reset(new Vec3s[mPointListSize]); + } + + + std::vector pointIndexLeafNodes; + mIdxTreePt->getNodes(pointIndexLeafNodes); + + tbb::parallel_for(auxiliaryLeafNodeRange, volume_to_mesh_internal::ComputePoints( + mSurfacePointList.get(), tree, pointIndexLeafNodes, + signFlagsLeafNodes, leafNodeOffsets, transform, ValueT(isovalue))); + } + + if (interrupter && interrupter->wasInterrupted()) return false; + + Index32LeafManagerT idxLeafs(*mIdxTreePt); + + using Index32RootNodeT = typename Index32TreeT::RootNodeType; + using Index32NodeChainT = typename Index32RootNodeT::NodeChainType; + static_assert(boost::mpl::size::value > 1, + "expected tree depth greater than one"); + using Index32InternalNodeT = + typename boost::mpl::at >::type; + + typename Index32TreeT::NodeCIter nIt = mIdxTreePt->cbeginNode(); + nIt.setMinDepth(Index32TreeT::NodeCIter::LEAF_DEPTH - 1); + nIt.setMaxDepth(Index32TreeT::NodeCIter::LEAF_DEPTH - 1); + + std::vector internalNodes; + + const Index32InternalNodeT* node = nullptr; + for (; nIt; ++nIt) { + nIt.getNode(node); + if (node) internalNodes.push_back(node); + } + + std::vector().swap(mLeafRanges); + mLeafRanges.resize(internalNodes.size()); + + std::vector().swap(mLeafNodes); + mLeafNodes.reserve(idxLeafs.leafCount()); + + typename Index32InternalNodeT::ChildOnCIter leafIt; + mMaxNodeLeafs = 0; + for (size_t n = 0, N = internalNodes.size(); n < N; ++n) { + + mLeafRanges[n].first = mLeafNodes.size(); + + size_t leafCount = 0; + for (leafIt = internalNodes[n]->cbeginChildOn(); leafIt; ++leafIt) { + mLeafNodes.push_back(&(*leafIt)); + ++leafCount; + } + + mMaxNodeLeafs = std::max(leafCount, mMaxNodeLeafs); + + mLeafRanges[n].second = mLeafNodes.size(); + } + + std::vector().swap(mLeafBoundingSpheres); + mLeafBoundingSpheres.resize(mLeafNodes.size()); + + v2s_internal::LeafOp leafBS( + mLeafBoundingSpheres, mLeafNodes, transform, mSurfacePointList); + leafBS.run(); + + + std::vector().swap(mNodeBoundingSpheres); + mNodeBoundingSpheres.resize(internalNodes.size()); + + v2s_internal::NodeOp nodeBS(mNodeBoundingSpheres, mLeafRanges, mLeafBoundingSpheres); + nodeBS.run(); + return true; +} // ClosestSurfacePoint::initialize + + +template +inline bool +ClosestSurfacePoint::search(std::vector& points, + std::vector& distances, bool transformPoints) +{ + distances.clear(); + distances.resize(points.size(), std::numeric_limits::infinity()); + + v2s_internal::ClosestPointDist cpd(points, distances, mSurfacePointList, + mLeafNodes, mLeafRanges, mLeafBoundingSpheres, mNodeBoundingSpheres, + mMaxNodeLeafs, transformPoints); + + cpd.run(); + + return true; +} + + +template +inline bool +ClosestSurfacePoint::search(const std::vector& points, std::vector& distances) +{ + return search(const_cast& >(points), distances, false); +} + + +template +inline bool +ClosestSurfacePoint::searchAndReplace(std::vector& points, + std::vector& distances) +{ + return search(points, distances, true); +} + +} // namespace tools +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TOOLS_VOLUME_TO_MESH_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/InternalNode.h b/openvdb/tree/InternalNode.h new file mode 100644 index 00000000..75147cb2 --- /dev/null +++ b/openvdb/tree/InternalNode.h @@ -0,0 +1,3295 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file InternalNode.h +/// +/// @brief Internal table nodes for OpenVDB trees + +#ifndef OPENVDB_TREE_INTERNALNODE_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_INTERNALNODE_HAS_BEEN_INCLUDED + +#include +#include +#include // for io::readCompressedValues(), etc. +#include // for math::isExactlyEqual(), etc. +#include +#include +#include "Iterator.h" +#include "NodeUnion.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +template struct SameInternalConfig; // forward declaration + + +template +class InternalNode +{ +public: + using ChildNodeType = _ChildNodeType; + using LeafNodeType = typename ChildNodeType::LeafNodeType; + using ValueType = typename ChildNodeType::ValueType; + using BuildType = typename ChildNodeType::BuildType; + using UnionType = NodeUnion; + using NodeMaskType = util::NodeMask; + + static const Index + LOG2DIM = Log2Dim, // log2 of tile count in one dimension + TOTAL = Log2Dim + ChildNodeType::TOTAL, // log2 of voxel count in one dimension + DIM = 1 << TOTAL, // total voxel count in one dimension + NUM_VALUES = 1 << (3 * Log2Dim), // total voxel count represented by this node + LEVEL = 1 + ChildNodeType::LEVEL; // level 0 = leaf + static const Index64 + NUM_VOXELS = uint64_t(1) << (3 * TOTAL); // total voxel count represented by this node + + /// @brief ValueConverter::Type is the type of an InternalNode having the same + /// child hierarchy and dimensions as this node but a different value type, T. + template + struct ValueConverter { + using Type = InternalNode::Type, Log2Dim>; + }; + + /// @brief SameConfiguration::value is @c true if and only if OtherNodeType + /// is the type of an InternalNode with the same dimensions as this node and whose + /// ChildNodeType has the same configuration as this node's ChildNodeType. + template + struct SameConfiguration { + static const bool value = + SameInternalConfig::value; + }; + + + /// @brief Default constructor + /// @warning The resulting InternalNode is uninitialized + InternalNode() {} + + /// @brief Constructor of an InternalNode with dense inactive tiles of the specified value. + /// @param offValue Background value used for inactive values + explicit InternalNode(const ValueType& offValue); + + /// @brief Constructs an InternalNode with dense tiles + /// @param origin The location in index space of the fist tile value + /// @param fillValue Value assigned to all the tiles + /// @param active State assigned to all the tiles + InternalNode(const Coord& origin, const ValueType& fillValue, bool active = false); + + InternalNode(PartialCreate, const Coord&, const ValueType& fillValue, bool active = false); + + /// @brief Deep copy constructor + /// + /// @note This method is multi-threaded! + InternalNode(const InternalNode&); + + /// @brief Value conversion copy constructor + /// + /// @note This method is multi-threaded! + template + explicit InternalNode(const InternalNode& other); + + /// @brief Topology copy constructor + /// + /// @note This method is multi-threaded! + template + InternalNode(const InternalNode& other, + const ValueType& background, TopologyCopy); + + /// @brief Topology copy constructor + /// + /// @note This method is multi-threaded! + template + InternalNode(const InternalNode& other, + const ValueType& offValue, const ValueType& onValue, TopologyCopy); + +#if OPENVDB_ABI_VERSION_NUMBER < 5 + virtual ~InternalNode(); +#else + ~InternalNode(); +#endif + +protected: + using MaskOnIterator = typename NodeMaskType::OnIterator; + using MaskOffIterator = typename NodeMaskType::OffIterator; + using MaskDenseIterator = typename NodeMaskType::DenseIterator; + + // Type tags to disambiguate template instantiations + struct ValueOn {}; struct ValueOff {}; struct ValueAll {}; + struct ChildOn {}; struct ChildOff {}; struct ChildAll {}; + + // The following class templates implement the iterator interfaces specified in Iterator.h + // by providing getItem(), setItem() and/or modifyItem() methods. + + // Sparse iterator that visits child nodes of an InternalNode + template + struct ChildIter: public SparseIteratorBase< + MaskIterT, ChildIter, NodeT, ChildT> + { + ChildIter() {} + ChildIter(const MaskIterT& iter, NodeT* parent): SparseIteratorBase< + MaskIterT, ChildIter, NodeT, ChildT>(iter, parent) {} + + ChildT& getItem(Index pos) const + { + assert(this->parent().isChildMaskOn(pos)); + return *(this->parent().getChildNode(pos)); + } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, const ChildT& c) const { this->parent().resetChildNode(pos, &c); } + + // Note: modifyItem() isn't implemented, since it's not useful for child node pointers. + };// ChildIter + + // Sparse iterator that visits tile values of an InternalNode + template + struct ValueIter: public SparseIteratorBase< + MaskIterT, ValueIter, NodeT, ValueT> + { + ValueIter() {} + ValueIter(const MaskIterT& iter, NodeT* parent): SparseIteratorBase< + MaskIterT, ValueIter, NodeT, ValueT>(iter, parent) {} + + const ValueT& getItem(Index pos) const { return this->parent().mNodes[pos].getValue(); } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, const ValueT& v) const { this->parent().mNodes[pos].setValue(v); } + + // Note: modifyItem() can't be called on const iterators. + template + void modifyItem(Index pos, const ModifyOp& op) const + { + op(this->parent().mNodes[pos].getValue()); + } + };// ValueIter + + // Dense iterator that visits both tiles and child nodes of an InternalNode + template + struct DenseIter: public DenseIteratorBase< + MaskDenseIterator, DenseIter, NodeT, ChildT, ValueT> + { + using BaseT = DenseIteratorBase; + using NonConstValueT = typename BaseT::NonConstValueType; + + DenseIter() {} + DenseIter(const MaskDenseIterator& iter, NodeT* parent): + DenseIteratorBase(iter, parent) {} + + bool getItem(Index pos, ChildT*& child, NonConstValueT& value) const + { + if (this->parent().isChildMaskOn(pos)) { + child = this->parent().getChildNode(pos); + return true; + } + child = nullptr; + value = this->parent().mNodes[pos].getValue(); + return false; + } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, ChildT* child) const + { + this->parent().resetChildNode(pos, child); + } + + // Note: unsetItem() can't be called on const iterators. + void unsetItem(Index pos, const ValueT& value) const + { + this->parent().unsetChildNode(pos, value); + } + };// DenseIter + +public: + // Iterators (see Iterator.h for usage) + using ChildOnIter = ChildIter; + using ChildOnCIter = ChildIter; + using ChildOffIter = ValueIter; + using ChildOffCIter = ValueIter; + using ChildAllIter = DenseIter; + using ChildAllCIter = DenseIter; + + using ValueOnIter = ValueIter; + using ValueOnCIter = ValueIter; + using ValueOffIter = ValueIter; + using ValueOffCIter = ValueIter; + using ValueAllIter = ValueIter; + using ValueAllCIter = ValueIter; + + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(mChildMask.beginOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(mChildMask.beginOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(mChildMask.beginDense(), this); } + ChildOnCIter beginChildOn() const { return cbeginChildOn(); } + ChildOffCIter beginChildOff() const { return cbeginChildOff(); } + ChildAllCIter beginChildAll() const { return cbeginChildAll(); } + ChildOnIter beginChildOn() { return ChildOnIter(mChildMask.beginOn(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(mChildMask.beginOff(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(mChildMask.beginDense(), this); } + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(mValueMask.beginOn(), this); } + /// @warning This iterator will also visit child nodes so use isChildMaskOn to skip them! + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(mValueMask.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(mChildMask.beginOff(), this); } + ValueOnCIter beginValueOn() const { return cbeginValueOn(); } + /// @warning This iterator will also visit child nodes so use isChildMaskOn to skip them! + ValueOffCIter beginValueOff() const { return cbeginValueOff(); } + ValueAllCIter beginValueAll() const { return cbeginValueAll(); } + ValueOnIter beginValueOn() { return ValueOnIter(mValueMask.beginOn(), this); } + /// @warning This iterator will also visit child nodes so use isChildMaskOn to skip them! + ValueOffIter beginValueOff() { return ValueOffIter(mValueMask.beginOff(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(mChildMask.beginOff(), this); } + + + /// @return The dimension of this InternalNode + /// @details The number of voxels in one coordinate direction covered by this node + static Index dim() { return DIM; } + /// @return The level of this node + /// @details Level 0 is by definition the level of the leaf nodes + static Index getLevel() { return LEVEL; } + /// @brief Populated an stil::vector with the dimension of all the + /// nodes in the branch starting with this node. + static void getNodeLog2Dims(std::vector& dims); + /// @return The dimension of the child nodes of this node. + /// @details The number of voxels in one coordinate direction + /// covered by a child node of this node. + static Index getChildDim() { return ChildNodeType::DIM; } + + /// Return the linear table offset of the given global or local coordinates. + static Index coordToOffset(const Coord& xyz); + /// @brief Return the local coordinates for a linear table offset, + /// where offset 0 has coordinates (0, 0, 0). + static void offsetToLocalCoord(Index n, Coord& xyz); + /// Return the global coordinates for a linear table offset. + Coord offsetToGlobalCoord(Index n) const; + + /// Return the grid index coordinates of this node's local origin. + const Coord& origin() const { return mOrigin; } + /// Set the grid index coordinates of this node's local origin. + void setOrigin(const Coord& origin) { mOrigin = origin; } + + Index32 leafCount() const; + void nodeCount(std::vector &vec) const; + Index32 nonLeafCount() const; + Index64 onVoxelCount() const; + Index64 offVoxelCount() const; + Index64 onLeafVoxelCount() const; + Index64 offLeafVoxelCount() const; + Index64 onTileCount() const; + + /// Return the total amount of memory in bytes occupied by this node and its children. + Index64 memUsage() const; + + /// @brief Expand the specified bounding box so that it includes the active tiles + /// of this internal node as well as all the active values in its child nodes. + /// If visitVoxels is false LeafNodes will be approximated as dense, i.e. with all + /// voxels active. Else the individual active voxels are visited to produce a tight bbox. + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// @brief Return the bounding box of this node, i.e., the full index space + /// spanned by the node regardless of its content. + CoordBBox getNodeBoundingBox() const { return CoordBBox::createCube(mOrigin, DIM); } + + /// @return True if this node contains no child nodes. + bool isEmpty() const { return mChildMask.isOff(); } + + /// Return @c true if all of this node's table entries have the same active state + /// and the same constant value to within the given tolerance, + /// and return that value in @a firstValue and the active state in @a state. + /// + /// @note This method also returns @c false if this node contains any child nodes. + bool isConstant(ValueType& firstValue, bool& state, + const ValueType& tolerance = zeroVal()) const; + + /// Return @c true if all of this node's tables entries have + /// the same active @a state and the range of its values satisfy + /// (@a maxValue - @a minValue) <= @a tolerance. + /// + /// @param minValue Is updated with the minimum of all values IF method + /// returns @c true. Else the value is undefined! + /// @param maxValue Is updated with the maximum of all values IF method + /// returns @c true. Else the value is undefined! + /// @param state Is updated with the state of all values IF method + /// returns @c true. Else the value is undefined! + /// @param tolerance The tolerance used to determine if values are + /// approximatly constant. + /// + /// @note This method also returns @c false if this node contains any child nodes. + bool isConstant(ValueType& minValue, ValueType& maxValue, + bool& state, const ValueType& tolerance = zeroVal()) const; + + /// Return @c true if this node has no children and only contains inactive values. + bool isInactive() const { return this->isChildMaskOff() && this->isValueMaskOff(); } + + /// Return @c true if the voxel at the given coordinates is active. + bool isValueOn(const Coord& xyz) const; + /// Return @c true if the voxel at the given offset is active. + bool isValueOn(Index offset) const { return mValueMask.isOn(offset); } + + /// Return @c true if this node or any of its child nodes have any active tiles. + bool hasActiveTiles() const; + + const ValueType& getValue(const Coord& xyz) const; + bool probeValue(const Coord& xyz, ValueType& value) const; + + /// @brief Return the level of the tree (0 = leaf) at which the value + /// at the given coordinates resides. + Index getValueLevel(const Coord& xyz) const; + + /// @brief If the first entry in this node's table is a tile, return the tile's value. + /// Otherwise, return the result of calling getFirstValue() on the child. + const ValueType& getFirstValue() const; + /// @brief If the last entry in this node's table is a tile, return the tile's value. + /// Otherwise, return the result of calling getLastValue() on the child. + const ValueType& getLastValue() const; + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the value of the voxel at the given coordinates but don't change its active state. + void setValueOnly(const Coord& xyz, const ValueType& value); + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValueOn(const Coord& xyz, const ValueType& value); + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz); + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value); + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + template + void modifyValue(const Coord& xyz, const ModifyOp& op); + /// Apply a functor to the voxel at the given coordinates. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op); + + /// Return the value of the voxel at the given coordinates and, if necessary, update + /// the accessor with pointers to the nodes along the path from the root node to + /// the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + const ValueType& getValueAndCache(const Coord& xyz, AccessorT&) const; + + /// Return @c true if the voxel at the given coordinates is active and, if necessary, + /// update the accessor with pointers to the nodes along the path from the root node + /// to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + bool isValueOnAndCache(const Coord& xyz, AccessorT&) const; + + /// Change the value of the voxel at the given coordinates and mark it as active. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// Set the value of the voxel at the given coordinate but preserves its active state. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueOnlyAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&); + + /// Apply a functor to the voxel at the given coordinates. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndActiveStateAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&); + + /// Change the value of the voxel at the given coordinates and mark it as inactive. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueOffAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// Set the active state of the voxel at the given coordinates without changing its value. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT&); + + /// Return, in @a value, the value of the voxel at the given coordinates and, + /// if necessary, update the accessor with pointers to the nodes along + /// the path from the root node to the node containing the voxel. + /// @return @c true if the voxel at the given coordinates is active + /// @note Used internally by ValueAccessor. + template + bool probeValueAndCache(const Coord& xyz, ValueType& value, AccessorT&) const; + + /// @brief Return the level of the tree (0 = leaf) at which the value + /// at the given coordinates resides. + /// + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + Index getValueLevelAndCache(const Coord& xyz, AccessorT&) const; + + /// Mark all values (both tiles and voxels) as active. + void setValuesOn(); + + // + // I/O + // + void writeTopology(std::ostream&, bool toHalf = false) const; + void readTopology(std::istream&, bool fromHalf = false); + void writeBuffers(std::ostream&, bool toHalf = false) const; + void readBuffers(std::istream&, bool fromHalf = false); + void readBuffers(std::istream&, const CoordBBox&, bool fromHalf = false); + + + // + // Aux methods + // + + /// Change the sign of all the values represented in this node and its child nodes. + void negate(); + + /// @brief Set all voxels within a given axis-aligned box to a constant value. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box + /// @param value the value to which to set voxels within the box + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive + /// @note This operation generates a sparse, but not always optimally sparse, + /// representation of the filled box. Follow fill operations with a prune() + /// operation for optimal sparseness. + void fill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// @brief Set all voxels within a given axis-aligned box to a constant value + /// and ensure that those voxels are all represented at the leaf level. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box. + /// @param value the value to which to set voxels within the box. + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive. + /// @sa voxelizeActiveTiles() + void denseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// @brief Densify active tiles, i.e., replace them with leaf-level active voxels. + /// @param threaded if true, this operation is multi-threaded (over the internal nodes). + /// @sa denseFill() + void voxelizeActiveTiles(bool threaded = true); + + /// @brief Copy into a dense grid the values of the voxels that lie within + /// a given bounding box. + /// @param bbox inclusive bounding box of the voxels to be copied into the dense grid + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + template + void copyToDense(const CoordBBox& bbox, DenseT& dense) const; + + /// @brief Efficiently merge another tree into this tree using one of several schemes. + /// @warning This operation cannibalizes the other tree. + template + void merge(InternalNode& other, const ValueType& background, const ValueType& otherBackground); + + /// @brief Merge, using one of several schemes, this node (and its descendants) + /// with a tile of the same dimensions and the given value and active state. + template void merge(const ValueType& tileValue, bool tileActive); + + /// @brief Union this branch's set of active values with the other branch's + /// active values. The value type of the other branch can be different. + /// @details The resulting state of a value is active if the corresponding value + /// was already active OR if it is active in the other tree. Also, a resulting + /// value maps to a voxel if the corresponding value already mapped to a voxel + /// OR if it is a voxel in the other tree. Thus, a resulting value can only + /// map to a tile if the corresponding value already mapped to a tile + /// AND if it is a tile value in other tree. + /// + /// Specifically, active tiles and voxels in this branch are not changed, and + /// tiles or voxels that were inactive in this branch but active in the other branch + /// are marked as active in this branch but left with their original values. + template + void topologyUnion(const InternalNode& other); + + /// @brief Intersects this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. + /// @details The resulting state of a value is active only if the corresponding + /// value was already active AND if it is active in the other tree. Also, a + /// resulting value maps to a voxel if the corresponding value + /// already mapped to an active voxel in either of the two grids + /// and it maps to an active tile or voxel in the other grid. + /// + /// @note This operation can delete branches in this grid if they + /// overlap with inactive tiles in the other grid. Likewise active + /// voxels can be turned into unactive voxels resulting in leaf + /// nodes with no active values. Thus, it is recommended to + /// subsequently call prune. + template + void topologyIntersection(const InternalNode& other, + const ValueType& background); + + /// @brief Difference this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this node and inactive in the other node. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyDifference. + /// + /// @note This operation modifies only active states, not + /// values. Also note that this operation can result in all voxels + /// being inactive so consider subsequnetly calling prune. + template + void topologyDifference(const InternalNode& other, + const ValueType& background); + + template + void combine(InternalNode& other, CombineOp&); + template + void combine(const ValueType& value, bool valueIsActive, CombineOp&); + + template + void combine2(const InternalNode& other0, const OtherNodeType& other1, CombineOp&); + template + void combine2(const ValueType& value, const OtherNodeType& other, bool valIsActive, CombineOp&); + template + void combine2(const InternalNode& other, const OtherValueType&, bool valIsActive, CombineOp&); + + /// @brief Calls the templated functor BBoxOp with bounding box + /// information for all active tiles and leaf nodes in this node. + /// An additional level argument is provided for each callback. + /// + /// @note The bounding boxes are guarenteed to be non-overlapping. + template void visitActiveBBox(BBoxOp&) const; + + template void visit(VisitorOp&); + template void visit(VisitorOp&) const; + + template + void visit2Node(OtherNodeType& other, VisitorOp&); + template + void visit2Node(OtherNodeType& other, VisitorOp&) const; + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false); + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false) const; + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&, const ValueType& background); + + /// @brief Reduce the memory footprint of this tree by replacing with tiles + /// any nodes whose values are all the same (optionally to within a tolerance) + /// and have the same active state. + void prune(const ValueType& tolerance = zeroVal()); + + /// @brief Add the specified leaf to this node, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeType* leaf); + + /// @brief Same as addLeaf() except, if necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + void addLeafAndCache(LeafNodeType* leaf, AccessorT&); + + /// @brief Return a pointer to the node of type @c NodeT that contains voxel (x, y, z) + /// and replace it with a tile of the specified value and state. + /// If no such node exists, leave the tree unchanged and return @c nullptr. + /// + /// @note The caller takes ownership of the node and is responsible for deleting it. + /// + /// @warning Since this method potentially removes nodes and branches of the tree, + /// it is important to clear the caches of all ValueAccessors associated with this tree. + template + NodeT* stealNode(const Coord& xyz, const ValueType& value, bool state); + + /// @brief Add the given child node at this level deducing the offset from it's origin. + /// If a child node with this offset already exists, delete the old node and add the + /// new node in its place (i.e. ownership of the new child node is transferred to + /// this InternalNode) + /// @return @c true if inserting the child has been successful, otherwise the caller + /// retains ownership of the node and is responsible for deleting it. + bool addChild(ChildNodeType* child); + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly creating a parent branch or deleting a child branch in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state); + + /// @brief Delete any existing child branch at the specified offset and add a tile. + void addTile(Index offset, const ValueType& value, bool state); + + /// @brief Same as addTile() except, if necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing (x, y, z). + template + void addTileAndCache(Index level, const Coord& xyz, const ValueType&, bool state, AccessorT&); + + //@{ + /// @brief Return a pointer to the node that contains voxel (x, y, z). + /// If no such node exists, return nullptr. + template NodeType* probeNode(const Coord& xyz); + template const NodeType* probeConstNode(const Coord& xyz) const; + //@} + + //@{ + /// @brief Same as probeNode() except, if necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing (x, y, z). + template + NodeType* probeNodeAndCache(const Coord& xyz, AccessorT&); + template + const NodeType* probeConstNodeAndCache(const Coord& xyz, AccessorT&) const; + //@} + + //@{ + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, return @c nullptr. + LeafNodeType* probeLeaf(const Coord& xyz); + const LeafNodeType* probeConstLeaf(const Coord& xyz) const; + const LeafNodeType* probeLeaf(const Coord& xyz) const; + //@} + + //@{ + /// @brief Same as probeLeaf() except, if necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing (x, y, z). + template + LeafNodeType* probeLeafAndCache(const Coord& xyz, AccessorT& acc); + template + const LeafNodeType* probeConstLeafAndCache(const Coord& xyz, AccessorT& acc) const; + template + const LeafNodeType* probeLeafAndCache(const Coord& xyz, AccessorT& acc) const; + //@} + + /// @brief Return the leaf node that contains voxel (x, y, z). + /// If no such node exists, create one, but preserve the values and + /// active states of all voxels. + /// + /// @details Use this method to preallocate a static tree topology + /// over which to safely perform multithreaded processing. + LeafNodeType* touchLeaf(const Coord& xyz); + + /// @brief Same as touchLeaf() except, if necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + LeafNodeType* touchLeafAndCache(const Coord& xyz, AccessorT&); + + //@{ + /// @brief Adds all nodes of a certain type to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...;// defines the type of nodes to be added to the array + /// void push_back(value_type nodePtr);// method that add nodes to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.getNodes(array); + /// @endcode + template + void getNodes(ArrayT& array); + template + void getNodes(ArrayT& array) const; + //@} + + /// @brief Steals all nodes of a certain type from the tree and + /// adds them to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...;// defines the type of nodes to be added to the array + /// void push_back(value_type nodePtr);// method that add nodes to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.stealNodes(array); + /// @endcode + template + void stealNodes(ArrayT& array, const ValueType& value, bool state); + + /// @brief Change inactive tiles or voxels with value oldBackground to newBackground + /// or -oldBackground to -newBackground. Active values are unchanged. + void resetBackground(const ValueType& oldBackground, const ValueType& newBackground); + + /// @brief Return @c true if the given tree branch has the same node and active value + /// topology as this tree branch (but possibly a different @c ValueType). + template + bool hasSameTopology(const InternalNode* other) const; + +protected: + //@{ + /// Allow iterators to call mask accessor methods (setValueMask(), setChildMask(), etc.). + /// @todo Make mask accessors public? + friend class IteratorBase; + friend class IteratorBase; + friend class IteratorBase; + //@} + + /// @brief During topology-only construction, access is needed + /// to protected/private members of other template instances. + template friend class InternalNode; + + // Mask accessors +public: + bool isValueMaskOn(Index n) const { return mValueMask.isOn(n); } + bool isValueMaskOn() const { return mValueMask.isOn(); } + bool isValueMaskOff(Index n) const { return mValueMask.isOff(n); } + bool isValueMaskOff() const { return mValueMask.isOff(); } + bool isChildMaskOn(Index n) const { return mChildMask.isOn(n); } + bool isChildMaskOff(Index n) const { return mChildMask.isOff(n); } + bool isChildMaskOff() const { return mChildMask.isOff(); } + const NodeMaskType& getValueMask() const { return mValueMask; } + const NodeMaskType& getChildMask() const { return mChildMask; } + NodeMaskType getValueOffMask() const + { + NodeMaskType mask = mValueMask; + mask |= mChildMask; + mask.toggle(); + return mask; + } + const UnionType* getTable() const { return mNodes; } +protected: + //@{ + /// Use a mask accessor to ensure consistency between the child and value masks; + /// i.e., the value mask should always be off wherever the child mask is on. + void setValueMask(Index n, bool on) { mValueMask.set(n, mChildMask.isOn(n) ? false : on); } + //@} + + void makeChildNodeEmpty(Index n, const ValueType& value); + void setChildNode( Index i, ChildNodeType* child);//assumes a tile + void resetChildNode(Index i, ChildNodeType* child);//checks for an existing child + ChildNodeType* unsetChildNode(Index i, const ValueType& value); + + template + static inline void doVisit(NodeT&, VisitorOp&); + + template + static inline void doVisit2Node(NodeT&, OtherNodeT&, VisitorOp&); + + template + static inline void doVisit2(NodeT&, OtherChildAllIterT&, VisitorOp&, bool otherIsLHS); + + ///@{ + /// @brief Returns a pointer to the child node at the linear offset n. + /// @warning This protected method assumes that a child node exists at + /// the specified linear offset! + ChildNodeType* getChildNode(Index n); + const ChildNodeType* getChildNode(Index n) const; + ///@} + + ///@{ + /// @brief Protected member classes for recursive multi-threading + struct VoxelizeActiveTiles; + template struct DeepCopy; + template struct TopologyCopy1; + template struct TopologyCopy2; + template struct TopologyUnion; + template struct TopologyDifference; + template struct TopologyIntersection; + ///@} + + UnionType mNodes[NUM_VALUES]; + NodeMaskType mChildMask, mValueMask; + /// Global grid index coordinates (x,y,z) of the local origin of this node + Coord mOrigin; +}; // class InternalNode + + +//////////////////////////////////////// + + +//@{ +/// Helper metafunction used to implement InternalNode::SameConfiguration +/// (which, as an inner class, can't be independently specialized) +template +struct SameInternalConfig { + static const bool value = false; +}; + +template +struct SameInternalConfig > { + static const bool value = ChildT1::template SameConfiguration::value; +}; +//@} + + +//////////////////////////////////////// + + +template +inline +InternalNode::InternalNode(const ValueType& background) +{ + for (Index i = 0; i < NUM_VALUES; ++i) mNodes[i].setValue(background); +} + + +template +inline +InternalNode::InternalNode(const Coord& origin, const ValueType& val, bool active): + mOrigin(origin[0] & ~(DIM - 1), // zero out the low-order bits + origin[1] & ~(DIM - 1), + origin[2] & ~(DIM - 1)) +{ + if (active) mValueMask.setOn(); + for (Index i = 0; i < NUM_VALUES; ++i) mNodes[i].setValue(val); +} + + +// For InternalNodes, the PartialCreate constructor is identical to its +// non-PartialCreate counterpart. +template +inline +InternalNode::InternalNode(PartialCreate, + const Coord& origin, const ValueType& val, bool active) + : mOrigin(origin[0] & ~(DIM-1), origin[1] & ~(DIM-1), origin[2] & ~(DIM-1)) +{ + if (active) mValueMask.setOn(); + for (Index i = 0; i < NUM_VALUES; ++i) mNodes[i].setValue(val); +} + +template +template +struct InternalNode::DeepCopy +{ + DeepCopy(const OtherInternalNode* source, InternalNode* target) : s(source), t(target) { + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + //(*this)(tbb::blocked_range(0, NUM_VALUES));//serial + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (s->mChildMask.isOff(i)) { + t->mNodes[i].setValue(ValueType(s->mNodes[i].getValue())); + } else { + t->mNodes[i].setChild(new ChildNodeType(*(s->mNodes[i].getChild()))); + } + } + } + const OtherInternalNode* s; + InternalNode* t; +};// DeepCopy + +template +inline +InternalNode::InternalNode(const InternalNode& other): + mChildMask(other.mChildMask), + mValueMask(other.mValueMask), + mOrigin(other.mOrigin) +{ + DeepCopy > tmp(&other, this); +} + + +// Copy-construct from a node with the same configuration but a different ValueType. +template +template +inline +InternalNode::InternalNode(const InternalNode& other) + : mChildMask(other.mChildMask) + , mValueMask(other.mValueMask) + , mOrigin(other.mOrigin) +{ + DeepCopy > tmp(&other, this); +} + +template +template +struct InternalNode::TopologyCopy1 +{ + TopologyCopy1(const OtherInternalNode* source, InternalNode* target, + const ValueType& background) : s(source), t(target), b(background) { + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + //(*this)(tbb::blocked_range(0, NUM_VALUES));//serial + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (s->isChildMaskOn(i)) { + t->mNodes[i].setChild(new ChildNodeType(*(s->mNodes[i].getChild()), + b, TopologyCopy())); + } else { + t->mNodes[i].setValue(b); + } + } + } + const OtherInternalNode* s; + InternalNode* t; + const ValueType &b; +};// TopologyCopy1 + +template +template +inline +InternalNode::InternalNode(const InternalNode& other, + const ValueType& background, TopologyCopy): + mChildMask(other.mChildMask), + mValueMask(other.mValueMask), + mOrigin(other.mOrigin) +{ + TopologyCopy1 > tmp(&other, this, background); +} + +template +template +struct InternalNode::TopologyCopy2 +{ + TopologyCopy2(const OtherInternalNode* source, InternalNode* target, + const ValueType& offValue, const ValueType& onValue) + : s(source), t(target), offV(offValue), onV(onValue) { + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (s->isChildMaskOn(i)) { + t->mNodes[i].setChild(new ChildNodeType(*(s->mNodes[i].getChild()), + offV, onV, TopologyCopy())); + } else { + t->mNodes[i].setValue(s->isValueMaskOn(i) ? onV : offV); + } + } + } + const OtherInternalNode* s; + InternalNode* t; + const ValueType &offV, &onV; + };// TopologyCopy2 + +template +template +inline +InternalNode::InternalNode(const InternalNode& other, + const ValueType& offValue, + const ValueType& onValue, TopologyCopy): + mChildMask(other.mChildMask), + mValueMask(other.mValueMask), + mOrigin(other.mOrigin) +{ + TopologyCopy2 > tmp(&other, this, offValue, onValue); +} + + +template +inline +InternalNode::~InternalNode() +{ + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + delete mNodes[iter.pos()].getChild(); + } +} + + +//////////////////////////////////////// + + +template +inline Index32 +InternalNode::leafCount() const +{ + if (ChildNodeType::getLevel() == 0) return mChildMask.countOn(); + Index32 sum = 0; + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + sum += iter->leafCount(); + } + return sum; +} + +template +inline void +InternalNode::nodeCount(std::vector &vec) const +{ + assert(vec.size() > ChildNodeType::LEVEL); + const auto count = mChildMask.countOn(); + if (ChildNodeType::LEVEL > 0 && count > 0) { + for (auto iter = this->cbeginChildOn(); iter; ++iter) iter->nodeCount(vec); + } + vec[ChildNodeType::LEVEL] += count; +} + + +template +inline Index32 +InternalNode::nonLeafCount() const +{ + Index32 sum = 1; + if (ChildNodeType::getLevel() == 0) return sum; + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + sum += iter->nonLeafCount(); + } + return sum; +} + + +template +inline Index64 +InternalNode::onVoxelCount() const +{ + Index64 sum = ChildT::NUM_VOXELS * mValueMask.countOn(); + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + sum += iter->onVoxelCount(); + } + return sum; +} + + +template +inline Index64 +InternalNode::offVoxelCount() const +{ + Index64 sum = ChildT::NUM_VOXELS * (NUM_VALUES-mValueMask.countOn()-mChildMask.countOn()); + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + sum += iter->offVoxelCount(); + } + return sum; +} + + +template +inline Index64 +InternalNode::onLeafVoxelCount() const +{ + Index64 sum = 0; + for (ChildOnCIter iter = this->beginChildOn(); iter; ++iter) { + sum += mNodes[iter.pos()].getChild()->onLeafVoxelCount(); + } + return sum; +} + + +template +inline Index64 +InternalNode::offLeafVoxelCount() const +{ + Index64 sum = 0; + for (ChildOnCIter iter = this->beginChildOn(); iter; ++iter) { + sum += mNodes[iter.pos()].getChild()->offLeafVoxelCount(); + } + return sum; +} + +template +inline Index64 +InternalNode::onTileCount() const +{ + Index64 sum = mValueMask.countOn(); + for (ChildOnCIter iter = this->cbeginChildOn(); LEVEL>1 && iter; ++iter) { + sum += iter->onTileCount(); + } + return sum; +} + +template +inline Index64 +InternalNode::memUsage() const +{ + Index64 sum = NUM_VALUES * sizeof(UnionType) + mChildMask.memUsage() + + mValueMask.memUsage() + sizeof(mOrigin); + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + sum += iter->memUsage(); + } + return sum; +} + + +template +inline void +InternalNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + if (bbox.isInside(this->getNodeBoundingBox())) return; + + for (ValueOnCIter i = this->cbeginValueOn(); i; ++i) { + bbox.expand(i.getCoord(), ChildT::DIM); + } + for (ChildOnCIter i = this->cbeginChildOn(); i; ++i) { + i->evalActiveBoundingBox(bbox, visitVoxels); + } +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::prune(const ValueType& tolerance) +{ + bool state = false; + ValueType value = zeroVal(); + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + const Index i = iter.pos(); + ChildT* child = mNodes[i].getChild(); + child->prune(tolerance); + if (child->isConstant(value, state, tolerance)) { + delete child; + mChildMask.setOff(i); + mValueMask.set(i, state); + mNodes[i].setValue(value); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline NodeT* +InternalNode::stealNode(const Coord& xyz, const ValueType& value, bool state) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) return nullptr; + ChildT* child = mNodes[n].getChild(); + if (std::is_same::value) { + mChildMask.setOff(n); + mValueMask.set(n, state); + mNodes[n].setValue(value); + } + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template stealNode(xyz, value, state); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +template +inline NodeT* +InternalNode::probeNode(const Coord& xyz) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) return nullptr; + ChildT* child = mNodes[n].getChild(); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline NodeT* +InternalNode::probeNodeAndCache(const Coord& xyz, AccessorT& acc) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) return nullptr; + ChildT* child = mNodes[n].getChild(); + acc.insert(xyz, child); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeNodeAndCache(xyz, acc); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline const NodeT* +InternalNode::probeConstNode(const Coord& xyz) const +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) return nullptr; + const ChildT* child = mNodes[n].getChild(); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeConstNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline const NodeT* +InternalNode::probeConstNodeAndCache(const Coord& xyz, AccessorT& acc) const +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) return nullptr; + const ChildT* child = mNodes[n].getChild(); + acc.insert(xyz, child); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeConstNodeAndCache(xyz, acc); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +inline typename ChildT::LeafNodeType* +InternalNode::probeLeaf(const Coord& xyz) +{ + return this->template probeNode(xyz); +} + + +template +template +inline typename ChildT::LeafNodeType* +InternalNode::probeLeafAndCache(const Coord& xyz, AccessorT& acc) +{ + return this->template probeNodeAndCache(xyz, acc); +} + + +template +template +inline const typename ChildT::LeafNodeType* +InternalNode::probeLeafAndCache(const Coord& xyz, AccessorT& acc) const +{ + return this->probeConstLeafAndCache(xyz, acc); +} + + +template +inline const typename ChildT::LeafNodeType* +InternalNode::probeConstLeaf(const Coord& xyz) const +{ + return this->template probeConstNode(xyz); +} + + +template +template +inline const typename ChildT::LeafNodeType* +InternalNode::probeConstLeafAndCache(const Coord& xyz, AccessorT& acc) const +{ + return this->template probeConstNodeAndCache(xyz, acc); +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::addLeaf(LeafNodeType* leaf) +{ + assert(leaf != nullptr); + const Coord& xyz = leaf->origin(); + const Index n = this->coordToOffset(xyz); + ChildT* child = nullptr; + if (mChildMask.isOff(n)) { + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, mNodes[n].getValue(), mValueMask.isOn(n)); + } else { + child = reinterpret_cast(leaf); + } + this->setChildNode(n, child); + } else { + if (ChildT::LEVEL>0) { + child = mNodes[n].getChild(); + } else { + delete mNodes[n].getChild(); + child = reinterpret_cast(leaf); + mNodes[n].setChild(child); + } + } + child->addLeaf(leaf); +} + + +template +template +inline void +InternalNode::addLeafAndCache(LeafNodeType* leaf, AccessorT& acc) +{ + assert(leaf != nullptr); + const Coord& xyz = leaf->origin(); + const Index n = this->coordToOffset(xyz); + ChildT* child = nullptr; + if (mChildMask.isOff(n)) { + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, mNodes[n].getValue(), mValueMask.isOn(n)); + acc.insert(xyz, child);//we only cache internal nodes + } else { + child = reinterpret_cast(leaf); + } + this->setChildNode(n, child); + } else { + if (ChildT::LEVEL>0) { + child = mNodes[n].getChild(); + acc.insert(xyz, child);//we only cache internal nodes + } else { + delete mNodes[n].getChild(); + child = reinterpret_cast(leaf); + mNodes[n].setChild(child); + } + } + child->addLeafAndCache(leaf, acc); +} + + +//////////////////////////////////////// + + +template +inline bool +InternalNode::addChild(ChildT* child) +{ + assert(child); + const Coord& xyz = child->origin(); + // verify that the child belongs in this internal node + if (Coord((xyz & ~(DIM-1))) != this->origin()) return false; + // compute the offset and insert the child node + const Index n = this->coordToOffset(xyz); + // this also deletes an existing child node + this->resetChildNode(n, child); + return true; +} + + +template +inline void +InternalNode::addTile(Index n, const ValueType& value, bool state) +{ + assert(n < NUM_VALUES); + this->makeChildNodeEmpty(n, value); + mValueMask.set(n, state); +} + + +template +inline void +InternalNode::addTile(Index level, const Coord& xyz, + const ValueType& value, bool state) +{ + if (LEVEL >= level) { + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) {// tile case + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, mNodes[n].getValue(), mValueMask.isOn(n)); + this->setChildNode(n, child); + child->addTile(level, xyz, value, state); + } else { + mValueMask.set(n, state); + mNodes[n].setValue(value); + } + } else {// child branch case + ChildT* child = mNodes[n].getChild(); + if (LEVEL > level) { + child->addTile(level, xyz, value, state); + } else { + delete child; + mChildMask.setOff(n); + mValueMask.set(n, state); + mNodes[n].setValue(value); + } + } + } +} + + +template +template +inline void +InternalNode::addTileAndCache(Index level, const Coord& xyz, + const ValueType& value, bool state, AccessorT& acc) +{ + if (LEVEL >= level) { + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) {// tile case + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, mNodes[n].getValue(), mValueMask.isOn(n)); + this->setChildNode(n, child); + acc.insert(xyz, child); + child->addTileAndCache(level, xyz, value, state, acc); + } else { + mValueMask.set(n, state); + mNodes[n].setValue(value); + } + } else {// child branch case + ChildT* child = mNodes[n].getChild(); + if (LEVEL > level) { + acc.insert(xyz, child); + child->addTileAndCache(level, xyz, value, state, acc); + } else { + delete child; + mChildMask.setOff(n); + mValueMask.set(n, state); + mNodes[n].setValue(value); + } + } + } +} + + +//////////////////////////////////////// + + +template +inline typename ChildT::LeafNodeType* +InternalNode::touchLeaf(const Coord& xyz) +{ + const Index n = this->coordToOffset(xyz); + ChildT* child = nullptr; + if (mChildMask.isOff(n)) { + child = new ChildT(xyz, mNodes[n].getValue(), mValueMask.isOn(n)); + this->setChildNode(n, child); + } else { + child = mNodes[n].getChild(); + } + return child->touchLeaf(xyz); +} + + +template +template +inline typename ChildT::LeafNodeType* +InternalNode::touchLeafAndCache(const Coord& xyz, AccessorT& acc) +{ + const Index n = this->coordToOffset(xyz); + if (mChildMask.isOff(n)) { + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), mValueMask.isOn(n))); + } + acc.insert(xyz, mNodes[n].getChild()); + return mNodes[n].getChild()->touchLeafAndCache(xyz, acc); +} + + +//////////////////////////////////////// + + +template +inline bool +InternalNode::isConstant(ValueType& firstValue, bool& state, + const ValueType& tolerance) const +{ + if (!mChildMask.isOff() || !mValueMask.isConstant(state)) return false;// early termination + + firstValue = mNodes[0].getValue(); + for (Index i = 1; i < NUM_VALUES; ++i) { + if (!math::isApproxEqual(mNodes[i].getValue(), firstValue, tolerance)) { + return false; // early termination + } + } + return true; +} + + +//////////////////////////////////////// + + +template +inline bool +InternalNode::isConstant(ValueType& minValue, + ValueType& maxValue, + bool& state, + const ValueType& tolerance) const +{ + + if (!mChildMask.isOff() || !mValueMask.isConstant(state)) return false;// early termination + minValue = maxValue = mNodes[0].getValue(); + for (Index i = 1; i < NUM_VALUES; ++i) { + const ValueType& v = mNodes[i].getValue(); + if (v < minValue) { + if ((maxValue - v) > tolerance) return false;// early termination + minValue = v; + } else if (v > maxValue) { + if ((v - minValue) > tolerance) return false;// early termination + maxValue = v; + } + } + return true; +} + + +//////////////////////////////////////// + + +template +inline bool +InternalNode::hasActiveTiles() const +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + const bool anyActiveTiles = !mValueMask.isOff(); + if (LEVEL==1 || anyActiveTiles) return anyActiveTiles; + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + if (iter->hasActiveTiles()) return true; + } + return false; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +inline bool +InternalNode::isValueOn(const Coord& xyz) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOff(n)) return this->isValueMaskOn(n); + return mNodes[n].getChild()->isValueOn(xyz); +} + +template +template +inline bool +InternalNode::isValueOnAndCache(const Coord& xyz, AccessorT& acc) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOff(n)) return this->isValueMaskOn(n); + acc.insert(xyz, mNodes[n].getChild()); + return mNodes[n].getChild()->isValueOnAndCache(xyz, acc); +} + + +template +inline const typename ChildT::ValueType& +InternalNode::getValue(const Coord& xyz) const +{ + const Index n = this->coordToOffset(xyz); + return this->isChildMaskOff(n) ? mNodes[n].getValue() + : mNodes[n].getChild()->getValue(xyz); +} + +template +template +inline const typename ChildT::ValueType& +InternalNode::getValueAndCache(const Coord& xyz, AccessorT& acc) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOn(n)) { + acc.insert(xyz, mNodes[n].getChild()); + return mNodes[n].getChild()->getValueAndCache(xyz, acc); + } + return mNodes[n].getValue(); +} + + +template +inline Index +InternalNode::getValueLevel(const Coord& xyz) const +{ + const Index n = this->coordToOffset(xyz); + return this->isChildMaskOff(n) ? LEVEL : mNodes[n].getChild()->getValueLevel(xyz); +} + +template +template +inline Index +InternalNode::getValueLevelAndCache(const Coord& xyz, AccessorT& acc) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOn(n)) { + acc.insert(xyz, mNodes[n].getChild()); + return mNodes[n].getChild()->getValueLevelAndCache(xyz, acc); + } + return LEVEL; +} + + +template +inline bool +InternalNode::probeValue(const Coord& xyz, ValueType& value) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOff(n)) { + value = mNodes[n].getValue(); + return this->isValueMaskOn(n); + } + return mNodes[n].getChild()->probeValue(xyz, value); +} + +template +template +inline bool +InternalNode::probeValueAndCache(const Coord& xyz, + ValueType& value, AccessorT& acc) const +{ + const Index n = this->coordToOffset(xyz); + if (this->isChildMaskOn(n)) { + acc.insert(xyz, mNodes[n].getChild()); + return mNodes[n].getChild()->probeValueAndCache(xyz, value, acc); + } + value = mNodes[n].getValue(); + return this->isValueMaskOn(n); +} + + +template +inline void +InternalNode::setValueOff(const Coord& xyz) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild && this->isValueMaskOn(n)) { + // If the voxel belongs to a constant tile that is active, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), /*active=*/true)); + } + if (hasChild) mNodes[n].getChild()->setValueOff(xyz); +} + + +template +inline void +InternalNode::setValueOn(const Coord& xyz) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild && !this->isValueMaskOn(n)) { + // If the voxel belongs to a constant tile that is inactive, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), /*active=*/false)); + } + if (hasChild) mNodes[n].getChild()->setValueOn(xyz); +} + + +template +inline void +InternalNode::setValueOff(const Coord& xyz, const ValueType& value) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool active = this->isValueMaskOn(n); + if (active || !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel belongs to a tile that is either active or that + // has a constant value that is different from the one provided, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) mNodes[n].getChild()->setValueOff(xyz, value); +} + +template +template +inline void +InternalNode::setValueOffAndCache(const Coord& xyz, + const ValueType& value, AccessorT& acc) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool active = this->isValueMaskOn(n); + if (active || !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel belongs to a tile that is either active or that + // has a constant value that is different from the one provided, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) { + ChildT* child = mNodes[n].getChild(); + acc.insert(xyz, child); + child->setValueOffAndCache(xyz, value, acc); + } +} + + +template +inline void +InternalNode::setValueOn(const Coord& xyz, const ValueType& value) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool active = this->isValueMaskOn(n); // tile's active state + if (!active || !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel belongs to a tile that is either inactive or that + // has a constant value that is different from the one provided, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) mNodes[n].getChild()->setValueOn(xyz, value); +} + +template +template +inline void +InternalNode::setValueAndCache(const Coord& xyz, + const ValueType& value, AccessorT& acc) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool active = this->isValueMaskOn(n); + if (!active || !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel belongs to a tile that is either inactive or that + // has a constant value that is different from the one provided, + // a child subtree must be constructed. + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) { + acc.insert(xyz, mNodes[n].getChild()); + mNodes[n].getChild()->setValueAndCache(xyz, value, acc); + } +} + + +template +inline void +InternalNode::setValueOnly(const Coord& xyz, const ValueType& value) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild && !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel has a tile value that is different from the one provided, + // a child subtree must be constructed. + const bool active = this->isValueMaskOn(n); + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + if (hasChild) mNodes[n].getChild()->setValueOnly(xyz, value); +} + +template +template +inline void +InternalNode::setValueOnlyAndCache(const Coord& xyz, + const ValueType& value, AccessorT& acc) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild && !math::isExactlyEqual(mNodes[n].getValue(), value)) { + // If the voxel has a tile value that is different from the one provided, + // a child subtree must be constructed. + const bool active = this->isValueMaskOn(n); + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + if (hasChild) { + acc.insert(xyz, mNodes[n].getChild()); + mNodes[n].getChild()->setValueOnlyAndCache(xyz, value, acc); + } +} + + +template +inline void +InternalNode::setActiveState(const Coord& xyz, bool on) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + if (on != this->isValueMaskOn(n)) { + // If the voxel belongs to a tile with the wrong active state, + // then a child subtree must be constructed. + // 'on' is the voxel's new state, therefore '!on' is the tile's current state + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), !on)); + } + } + if (hasChild) mNodes[n].getChild()->setActiveState(xyz, on); +} + +template +template +inline void +InternalNode::setActiveStateAndCache(const Coord& xyz, bool on, AccessorT& acc) +{ + const Index n = this->coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + if (on != this->isValueMaskOn(n)) { + // If the voxel belongs to a tile with the wrong active state, + // then a child subtree must be constructed. + // 'on' is the voxel's new state, therefore '!on' is the tile's current state + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), !on)); + } + } + if (hasChild) { + ChildT* child = mNodes[n].getChild(); + acc.insert(xyz, child); + child->setActiveStateAndCache(xyz, on, acc); + } +} + + +template +inline void +InternalNode::setValuesOn() +{ + mValueMask = !mChildMask; + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + mNodes[iter.pos()].getChild()->setValuesOn(); + } +} + + +template +template +inline void +InternalNode::modifyValue(const Coord& xyz, const ModifyOp& op) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + // Need to create a child if the tile is inactive, + // in order to activate voxel (x, y, z). + const bool active = this->isValueMaskOn(n); + bool createChild = !active; + if (!createChild) { + // Need to create a child if applying the functor + // to the tile value produces a different value. + const ValueType& tileVal = mNodes[n].getValue(); + ValueType modifiedVal = tileVal; + op(modifiedVal); + createChild = !math::isExactlyEqual(tileVal, modifiedVal); + } + if (createChild) { + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) mNodes[n].getChild()->modifyValue(xyz, op); +} + +template +template +inline void +InternalNode::modifyValueAndCache(const Coord& xyz, const ModifyOp& op, + AccessorT& acc) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + // Need to create a child if the tile is inactive, + // in order to activate voxel (x, y, z). + const bool active = this->isValueMaskOn(n); + bool createChild = !active; + if (!createChild) { + // Need to create a child if applying the functor + // to the tile value produces a different value. + const ValueType& tileVal = mNodes[n].getValue(); + ValueType modifiedVal = tileVal; + op(modifiedVal); + createChild = !math::isExactlyEqual(tileVal, modifiedVal); + } + if (createChild) { + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, mNodes[n].getValue(), active)); + } + } + if (hasChild) { + ChildNodeType* child = mNodes[n].getChild(); + acc.insert(xyz, child); + child->modifyValueAndCache(xyz, op, acc); + } +} + + +template +template +inline void +InternalNode::modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool tileState = this->isValueMaskOn(n); + const ValueType& tileVal = mNodes[n].getValue(); + bool modifiedState = !tileState; + ValueType modifiedVal = tileVal; + op(modifiedVal, modifiedState); + // Need to create a child if applying the functor to the tile + // produces a different value or active state. + if (modifiedState != tileState || !math::isExactlyEqual(modifiedVal, tileVal)) { + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, tileVal, tileState)); + } + } + if (hasChild) mNodes[n].getChild()->modifyValueAndActiveState(xyz, op); +} + +template +template +inline void +InternalNode::modifyValueAndActiveStateAndCache( + const Coord& xyz, const ModifyOp& op, AccessorT& acc) +{ + const Index n = InternalNode::coordToOffset(xyz); + bool hasChild = this->isChildMaskOn(n); + if (!hasChild) { + const bool tileState = this->isValueMaskOn(n); + const ValueType& tileVal = mNodes[n].getValue(); + bool modifiedState = !tileState; + ValueType modifiedVal = tileVal; + op(modifiedVal, modifiedState); + // Need to create a child if applying the functor to the tile + // produces a different value or active state. + if (modifiedState != tileState || !math::isExactlyEqual(modifiedVal, tileVal)) { + hasChild = true; + this->setChildNode(n, new ChildNodeType(xyz, tileVal, tileState)); + } + } + if (hasChild) { + ChildNodeType* child = mNodes[n].getChild(); + acc.insert(xyz, child); + child->modifyValueAndActiveStateAndCache(xyz, op, acc); + } +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::clip(const CoordBBox& clipBBox, const ValueType& background) +{ + CoordBBox nodeBBox = this->getNodeBoundingBox(); + if (!clipBBox.hasOverlap(nodeBBox)) { + // This node lies completely outside the clipping region. Fill it with background tiles. + this->fill(nodeBBox, background, /*active=*/false); + } else if (clipBBox.isInside(nodeBBox)) { + // This node lies completely inside the clipping region. Leave it intact. + return; + } + + // This node isn't completely contained inside the clipping region. + // Clip tiles and children, and replace any that lie outside the region + // with background tiles. + + for (Index pos = 0; pos < NUM_VALUES; ++pos) { + const Coord xyz = this->offsetToGlobalCoord(pos); // tile or child origin + CoordBBox tileBBox(xyz, xyz.offsetBy(ChildT::DIM - 1)); // tile or child bounds + if (!clipBBox.hasOverlap(tileBBox)) { + // This table entry lies completely outside the clipping region. + // Replace it with a background tile. + this->makeChildNodeEmpty(pos, background); + mValueMask.setOff(pos); + } else if (!clipBBox.isInside(tileBBox)) { + // This table entry does not lie completely inside the clipping region + // and must be clipped. + if (this->isChildMaskOn(pos)) { + mNodes[pos].getChild()->clip(clipBBox, background); + } else { + // Replace this tile with a background tile, then fill the clip region + // with the tile's original value. (This might create a child branch.) + tileBBox.intersect(clipBBox); + const ValueType val = mNodes[pos].getValue(); + const bool on = this->isValueMaskOn(pos); + mNodes[pos].setValue(background); + mValueMask.setOff(pos); + this->fill(tileBBox, val, on); + } + } else { + // This table entry lies completely inside the clipping region. Leave it intact. + } + } +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::fill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + auto clippedBBox = this->getNodeBoundingBox(); + clippedBBox.intersect(bbox); + if (!clippedBBox) return; + + // Iterate over the fill region in axis-aligned, tile-sized chunks. + // (The first and last chunks along each axis might be smaller than a tile.) + Coord xyz, tileMin, tileMax; + for (int x = clippedBBox.min().x(); x <= clippedBBox.max().x(); x = tileMax.x() + 1) { + xyz.setX(x); + for (int y = clippedBBox.min().y(); y <= clippedBBox.max().y(); y = tileMax.y() + 1) { + xyz.setY(y); + for (int z = clippedBBox.min().z(); z <= clippedBBox.max().z(); z = tileMax.z() + 1) { + xyz.setZ(z); + + // Get the bounds of the tile that contains voxel (x, y, z). + const Index n = this->coordToOffset(xyz); + tileMin = this->offsetToGlobalCoord(n); + tileMax = tileMin.offsetBy(ChildT::DIM - 1); + + if (xyz != tileMin || Coord::lessThan(clippedBBox.max(), tileMax)) { + // If the box defined by (xyz, clippedBBox.max()) doesn't completely enclose + // the tile to which xyz belongs, create a child node (or retrieve + // the existing one). + ChildT* child = nullptr; + if (this->isChildMaskOff(n)) { + // Replace the tile with a newly-created child that is initialized + // with the tile's value and active state. + child = new ChildT{xyz, mNodes[n].getValue(), this->isValueMaskOn(n)}; + this->setChildNode(n, child); + } else { + child = mNodes[n].getChild(); + } + + // Forward the fill request to the child. + if (child) { + const Coord tmp = Coord::minComponent(clippedBBox.max(), tileMax); + child->fill(CoordBBox(xyz, tmp), value, active); + } + + } else { + // If the box given by (xyz, clippedBBox.max()) completely encloses + // the tile to which xyz belongs, create the tile (if it + // doesn't already exist) and give it the fill value. + this->makeChildNodeEmpty(n, value); + mValueMask.set(n, active); + } + } + } + } +} + + +template +inline void +InternalNode::denseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + auto clippedBBox = this->getNodeBoundingBox(); + clippedBBox.intersect(bbox); + if (!clippedBBox) return; + + // Iterate over the fill region in axis-aligned, tile-sized chunks. + // (The first and last chunks along each axis might be smaller than a tile.) + Coord xyz, tileMin, tileMax; + for (int x = clippedBBox.min().x(); x <= clippedBBox.max().x(); x = tileMax.x() + 1) { + xyz.setX(x); + for (int y = clippedBBox.min().y(); y <= clippedBBox.max().y(); y = tileMax.y() + 1) { + xyz.setY(y); + for (int z = clippedBBox.min().z(); z <= clippedBBox.max().z(); z = tileMax.z() + 1) { + xyz.setZ(z); + + // Get the table index of the tile that contains voxel (x, y, z). + const auto n = this->coordToOffset(xyz); + + // Retrieve the child node at index n, or replace the tile at index n with a child. + ChildT* child = nullptr; + if (this->isChildMaskOn(n)) { + child = mNodes[n].getChild(); + } else { + // Replace the tile with a newly-created child that is filled + // with the tile's value and active state. + child = new ChildT{xyz, mNodes[n].getValue(), this->isValueMaskOn(n)}; + this->setChildNode(n, child); + } + + // Get the bounds of the tile that contains voxel (x, y, z). + tileMin = this->offsetToGlobalCoord(n); + tileMax = tileMin.offsetBy(ChildT::DIM - 1); + + // Forward the fill request to the child. + child->denseFill(CoordBBox{xyz, clippedBBox.max()}, value, active); + } + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::copyToDense(const CoordBBox& bbox, DenseT& dense) const +{ + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + for (Coord xyz = bbox.min(), max; xyz[0] <= bbox.max()[0]; xyz[0] = max[0] + 1) { + for (xyz[1] = bbox.min()[1]; xyz[1] <= bbox.max()[1]; xyz[1] = max[1] + 1) { + for (xyz[2] = bbox.min()[2]; xyz[2] <= bbox.max()[2]; xyz[2] = max[2] + 1) { + const Index n = this->coordToOffset(xyz); + // Get max coordinates of the child node that contains voxel xyz. + max = this->offsetToGlobalCoord(n).offsetBy(ChildT::DIM-1); + + // Get the bbox of the interection of bbox and the child node + CoordBBox sub(xyz, Coord::minComponent(bbox.max(), max)); + + if (this->isChildMaskOn(n)) {//is a child + mNodes[n].getChild()->copyToDense(sub, dense); + } else {//a tile value + const ValueType value = mNodes[n].getValue(); + sub.translate(-min); + DenseValueType* a0 = dense.data() + zStride*sub.min()[2]; + for (Int32 x=sub.min()[0], ex=sub.max()[0]+1; x +inline void +InternalNode::writeTopology(std::ostream& os, bool toHalf) const +{ + mChildMask.save(os); + mValueMask.save(os); + + { + // Copy all of this node's values into an array. + std::unique_ptr valuePtr(new ValueType[NUM_VALUES]); + ValueType* values = valuePtr.get(); + const ValueType zero = zeroVal(); + for (Index i = 0; i < NUM_VALUES; ++i) { + values[i] = (mChildMask.isOff(i) ? mNodes[i].getValue() : zero); + } + // Compress (optionally) and write out the contents of the array. + io::writeCompressedValues(os, values, NUM_VALUES, mValueMask, mChildMask, toHalf); + } + // Write out the child nodes in order. + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + iter->writeTopology(os, toHalf); + } +} + + +template +inline void +InternalNode::readTopology(std::istream& is, bool fromHalf) +{ + const ValueType background = (!io::getGridBackgroundValuePtr(is) ? zeroVal() + : *static_cast(io::getGridBackgroundValuePtr(is))); + + mChildMask.load(is); + mValueMask.load(is); + + if (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_INTERNALNODE_COMPRESSION) { + for (Index i = 0; i < NUM_VALUES; ++i) { + if (this->isChildMaskOn(i)) { + ChildNodeType* child = + new ChildNodeType(PartialCreate(), offsetToGlobalCoord(i), background); + mNodes[i].setChild(child); + child->readTopology(is); + } else { + ValueType value; + is.read(reinterpret_cast(&value), sizeof(ValueType)); + mNodes[i].setValue(value); + } + } + } else { + const bool oldVersion = + (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION); + const Index numValues = (oldVersion ? mChildMask.countOff() : NUM_VALUES); + { + // Read in (and uncompress, if necessary) all of this node's values + // into a contiguous array. + std::unique_ptr valuePtr(new ValueType[numValues]); + ValueType* values = valuePtr.get(); + io::readCompressedValues(is, values, numValues, mValueMask, fromHalf); + + // Copy values from the array into this node's table. + if (oldVersion) { + Index n = 0; + for (ValueAllIter iter = this->beginValueAll(); iter; ++iter) { + mNodes[iter.pos()].setValue(values[n++]); + } + assert(n == numValues); + } else { + for (ValueAllIter iter = this->beginValueAll(); iter; ++iter) { + mNodes[iter.pos()].setValue(values[iter.pos()]); + } + } + } + // Read in all child nodes and insert them into the table at their proper locations. + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + ChildNodeType* child = new ChildNodeType(PartialCreate(), iter.getCoord(), background); + mNodes[iter.pos()].setChild(child); + child->readTopology(is, fromHalf); + } + } +} + + +//////////////////////////////////////// + + +template +inline const typename ChildT::ValueType& +InternalNode::getFirstValue() const +{ + return (this->isChildMaskOn(0) ? mNodes[0].getChild()->getFirstValue() : mNodes[0].getValue()); +} + + +template +inline const typename ChildT::ValueType& +InternalNode::getLastValue() const +{ + const Index n = NUM_VALUES - 1; + return (this->isChildMaskOn(n) ? mNodes[n].getChild()->getLastValue() : mNodes[n].getValue()); +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::negate() +{ + for (Index i = 0; i < NUM_VALUES; ++i) { + if (this->isChildMaskOn(i)) { + mNodes[i].getChild()->negate(); + } else { + mNodes[i].setValue(math::negative(mNodes[i].getValue())); + } + } + +} + + +//////////////////////////////////////// + + +template +struct InternalNode::VoxelizeActiveTiles +{ + VoxelizeActiveTiles(InternalNode &node) : mNode(&node) { + //(*this)(tbb::blocked_range(0, NUM_VALUES));//single thread for debugging + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + + node.mChildMask |= node.mValueMask; + node.mValueMask.setOff(); + } + void operator()(const tbb::blocked_range &r) const + { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (mNode->mChildMask.isOn(i)) {// Loop over node's child nodes + mNode->mNodes[i].getChild()->voxelizeActiveTiles(true); + } else if (mNode->mValueMask.isOn(i)) {// Loop over node's active tiles + const Coord &ijk = mNode->offsetToGlobalCoord(i); + ChildNodeType *child = new ChildNodeType(ijk, mNode->mNodes[i].getValue(), true); + child->voxelizeActiveTiles(true); + mNode->mNodes[i].setChild(child); + } + } + } + InternalNode* mNode; +};// VoxelizeActiveTiles + +template +inline void +InternalNode::voxelizeActiveTiles(bool threaded) +{ + if (threaded) { + VoxelizeActiveTiles tmp(*this); + } else { + for (ValueOnIter iter = this->beginValueOn(); iter; ++iter) { + this->setChildNode(iter.pos(), + new ChildNodeType(iter.getCoord(), iter.getValue(), true)); + } + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) + iter->voxelizeActiveTiles(false); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::merge(InternalNode& other, + const ValueType& background, const ValueType& otherBackground) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + + switch (Policy) { + + case MERGE_ACTIVE_STATES: + default: + { + for (ChildOnIter iter = other.beginChildOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mChildMask.isOn(n)) { + // Merge this node's child with the other node's child. + mNodes[n].getChild()->template merge(*iter, + background, otherBackground); + } else if (mValueMask.isOff(n)) { + // Replace this node's inactive tile with the other node's child + // and replace the other node's child with a tile of undefined value + // (which is okay since the other tree is assumed to be cannibalized + // in the process of merging). + ChildNodeType* child = other.mNodes[n].getChild(); + other.mChildMask.setOff(n); + child->resetBackground(otherBackground, background); + this->setChildNode(n, child); + } + } + + // Copy active tile values. + for (ValueOnCIter iter = other.cbeginValueOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mValueMask.isOff(n)) { + // Replace this node's child or inactive tile with the other node's active tile. + this->makeChildNodeEmpty(n, iter.getValue()); + mValueMask.setOn(n); + } + } + break; + } + + case MERGE_NODES: + { + for (ChildOnIter iter = other.beginChildOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mChildMask.isOn(n)) { + // Merge this node's child with the other node's child. + mNodes[n].getChild()->template merge(*iter, background, otherBackground); + } else { + // Replace this node's tile (regardless of its active state) with + // the other node's child and replace the other node's child with + // a tile of undefined value (which is okay since the other tree + // is assumed to be cannibalized in the process of merging). + ChildNodeType* child = other.mNodes[n].getChild(); + other.mChildMask.setOff(n); + child->resetBackground(otherBackground, background); + this->setChildNode(n, child); + } + } + break; + } + + case MERGE_ACTIVE_STATES_AND_NODES: + { + // Transfer children from the other tree to this tree. + for (ChildOnIter iter = other.beginChildOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mChildMask.isOn(n)) { + // Merge this node's child with the other node's child. + mNodes[n].getChild()->template merge(*iter, background, otherBackground); + } else { + // Replace this node's tile with the other node's child, leaving the other + // node with an inactive tile of undefined value (which is okay since + // the other tree is assumed to be cannibalized in the process of merging). + ChildNodeType* child = other.mNodes[n].getChild(); + other.mChildMask.setOff(n); + child->resetBackground(otherBackground, background); + if (mValueMask.isOn(n)) { + // Merge the child with this node's active tile. + child->template merge(mNodes[n].getValue(), /*on=*/true); + mValueMask.setOff(n); + } + mChildMask.setOn(n); + mNodes[n].setChild(child); + } + } + + // Merge active tiles into this tree. + for (ValueOnCIter iter = other.cbeginValueOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mChildMask.isOn(n)) { + // Merge the other node's active tile into this node's child. + mNodes[n].getChild()->template merge(iter.getValue(), /*on=*/true); + } else if (mValueMask.isOff(n)) { + // Replace this node's inactive tile with the other node's active tile. + mNodes[n].setValue(iter.getValue()); + mValueMask.setOn(n); + } + } + break; + } + + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline void +InternalNode::merge(const ValueType& tileValue, bool tileActive) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + + if (Policy != MERGE_ACTIVE_STATES_AND_NODES) return; + + // For MERGE_ACTIVE_STATES_AND_NODES, inactive tiles in the other tree are ignored. + if (!tileActive) return; + + // Iterate over this node's children and inactive tiles. + for (ValueOffIter iter = this->beginValueOff(); iter; ++iter) { + const Index n = iter.pos(); + if (mChildMask.isOn(n)) { + // Merge the other node's active tile into this node's child. + mNodes[n].getChild()->template merge(tileValue, /*on=*/true); + } else { + // Replace this node's inactive tile with the other node's active tile. + iter.setValue(tileValue); + mValueMask.setOn(n); + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +template +struct InternalNode::TopologyUnion +{ + using W = typename NodeMaskType::Word; + struct A { inline void operator()(W &tV, const W& sV, const W& tC) const + { tV = (tV | sV) & ~tC; } + }; + TopologyUnion(const OtherInternalNode* source, InternalNode* target) : s(source), t(target) { + //(*this)(tbb::blocked_range(0, NUM_VALUES));//single thread for debugging + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + + // Bit processing is done in a single thread! + t->mChildMask |= s->mChildMask;//serial but very fast bitwise post-process + A op; + t->mValueMask.foreach(s->mValueMask, t->mChildMask, op); + assert((t->mValueMask & t->mChildMask).isOff());//no overlapping active tiles or child nodes + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (s->mChildMask.isOn(i)) {// Loop over other node's child nodes + const typename OtherInternalNode::ChildNodeType& other = *(s->mNodes[i].getChild()); + if (t->mChildMask.isOn(i)) {//this has a child node + t->mNodes[i].getChild()->topologyUnion(other); + } else {// this is a tile so replace it with a child branch with identical topology + ChildT* child = new ChildT(other, t->mNodes[i].getValue(), TopologyCopy()); + if (t->mValueMask.isOn(i)) child->setValuesOn();//activate all values + t->mNodes[i].setChild(child); + } + } else if (s->mValueMask.isOn(i) && t->mChildMask.isOn(i)) { + t->mNodes[i].getChild()->setValuesOn(); + } + } + } + const OtherInternalNode* s; + InternalNode* t; +};// TopologyUnion + +template +template +inline void +InternalNode::topologyUnion(const InternalNode& other) +{ + TopologyUnion > tmp(&other, this); +} + +template +template +struct InternalNode::TopologyIntersection +{ + using W = typename NodeMaskType::Word; + struct A { inline void operator()(W &tC, const W& sC, const W& sV, const W& tV) const + { tC = (tC & (sC | sV)) | (tV & sC); } + }; + TopologyIntersection(const OtherInternalNode* source, InternalNode* target, + const ValueType& background) : s(source), t(target), b(background) { + //(*this)(tbb::blocked_range(0, NUM_VALUES));//single thread for debugging + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + + // Bit processing is done in a single thread! + A op; + t->mChildMask.foreach(s->mChildMask, s->mValueMask, t->mValueMask, op); + + t->mValueMask &= s->mValueMask; + assert((t->mValueMask & t->mChildMask).isOff());//no overlapping active tiles or child nodes + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (t->mChildMask.isOn(i)) {// Loop over this node's child nodes + ChildT* child = t->mNodes[i].getChild(); + if (s->mChildMask.isOn(i)) {//other also has a child node + child->topologyIntersection(*(s->mNodes[i].getChild()), b); + } else if (s->mValueMask.isOff(i)) {//other is an inactive tile + delete child;//convert child to an inactive tile + t->mNodes[i].setValue(b); + } + } else if (t->mValueMask.isOn(i) && s->mChildMask.isOn(i)) {//active tile -> a branch + t->mNodes[i].setChild(new ChildT(*(s->mNodes[i].getChild()), + t->mNodes[i].getValue(), TopologyCopy())); + } + } + } + const OtherInternalNode* s; + InternalNode* t; + const ValueType& b; +};// TopologyIntersection + +template +template +inline void +InternalNode::topologyIntersection( + const InternalNode& other, const ValueType& background) +{ + TopologyIntersection > tmp(&other, this, background); +} + +template +template +struct InternalNode::TopologyDifference +{ + using W = typename NodeMaskType::Word; + struct A {inline void operator()(W &tC, const W& sC, const W& sV, const W& tV) const + { tC = (tC & (sC | ~sV)) | (tV & sC); } + }; + struct B {inline void operator()(W &tV, const W& sC, const W& sV, const W& tC) const + { tV &= ~((tC & sV) | (sC | sV)); } + }; + TopologyDifference(const OtherInternalNode* source, InternalNode* target, + const ValueType& background) : s(source), t(target), b(background) { + //(*this)(tbb::blocked_range(0, NUM_VALUES));//single thread for debugging + tbb::parallel_for(tbb::blocked_range(0, NUM_VALUES), *this); + + // Bit processing is done in a single thread! + const NodeMaskType oldChildMask(t->mChildMask);//important to avoid cross pollution + A op1; + t->mChildMask.foreach(s->mChildMask, s->mValueMask, t->mValueMask, op1); + + B op2; + t->mValueMask.foreach(t->mChildMask, s->mValueMask, oldChildMask, op2); + assert((t->mValueMask & t->mChildMask).isOff());//no overlapping active tiles or child nodes + } + void operator()(const tbb::blocked_range &r) const { + for (Index i = r.begin(), end=r.end(); i!=end; ++i) { + if (t->mChildMask.isOn(i)) {// Loop over this node's child nodes + ChildT* child = t->mNodes[i].getChild(); + if (s->mChildMask.isOn(i)) { + child->topologyDifference(*(s->mNodes[i].getChild()), b); + } else if (s->mValueMask.isOn(i)) { + delete child;//convert child to an inactive tile + t->mNodes[i].setValue(b); + } + } else if (t->mValueMask.isOn(i)) {//this is an active tile + if (s->mChildMask.isOn(i)) { + const typename OtherInternalNode::ChildNodeType& other = + *(s->mNodes[i].getChild()); + ChildT* child = new ChildT(other.origin(), t->mNodes[i].getValue(), true); + child->topologyDifference(other, b); + t->mNodes[i].setChild(child);//replace the active tile with a child branch + } + } + } + } + const OtherInternalNode* s; + InternalNode* t; + const ValueType& b; +};// TopologyDifference + +template +template +inline void +InternalNode::topologyDifference(const InternalNode& other, + const ValueType& background) +{ + TopologyDifference > tmp(&other, this, background); +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::combine(InternalNode& other, CombineOp& op) +{ + const ValueType zero = zeroVal(); + + CombineArgs args; + + for (Index i = 0; i < NUM_VALUES; ++i) { + if (this->isChildMaskOff(i) && other.isChildMaskOff(i)) { + // Both this node and the other node have constant values (tiles). + // Combine the two values and store the result as this node's new tile value. + op(args.setARef(mNodes[i].getValue()) + .setAIsActive(isValueMaskOn(i)) + .setBRef(other.mNodes[i].getValue()) + .setBIsActive(other.isValueMaskOn(i))); + mNodes[i].setValue(args.result()); + mValueMask.set(i, args.resultIsActive()); + } else if (this->isChildMaskOn(i) && other.isChildMaskOff(i)) { + // Combine this node's child with the other node's constant value. + ChildNodeType* child = mNodes[i].getChild(); + assert(child); + if (child) { + child->combine(other.mNodes[i].getValue(), other.isValueMaskOn(i), op); + } + } else if (this->isChildMaskOff(i) && other.isChildMaskOn(i)) { + // Combine this node's constant value with the other node's child. + ChildNodeType* child = other.mNodes[i].getChild(); + assert(child); + if (child) { + // Combine this node's constant value with the other node's child, + // but use a new functor in which the A and B values are swapped, + // since the constant value is the A value, not the B value. + SwappedCombineOp swappedOp(op); + child->combine(mNodes[i].getValue(), isValueMaskOn(i), swappedOp); + + // Steal the other node's child. + other.mChildMask.setOff(i); + other.mNodes[i].setValue(zero); + this->setChildNode(i, child); + } + + } else /*if (isChildMaskOn(i) && other.isChildMaskOn(i))*/ { + // Combine this node's child with the other node's child. + ChildNodeType + *child = mNodes[i].getChild(), + *otherChild = other.mNodes[i].getChild(); + assert(child); + assert(otherChild); + if (child && otherChild) { + child->combine(*otherChild, op); + } + } + } +} + + +template +template +inline void +InternalNode::combine(const ValueType& value, bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + + for (Index i = 0; i < NUM_VALUES; ++i) { + if (this->isChildMaskOff(i)) { + // Combine this node's constant value with the given constant value. + op(args.setARef(mNodes[i].getValue()) + .setAIsActive(isValueMaskOn(i)) + .setBRef(value) + .setBIsActive(valueIsActive)); + mNodes[i].setValue(args.result()); + mValueMask.set(i, args.resultIsActive()); + } else /*if (isChildMaskOn(i))*/ { + // Combine this node's child with the given constant value. + ChildNodeType* child = mNodes[i].getChild(); + assert(child); + if (child) child->combine(value, valueIsActive, op); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::combine2(const InternalNode& other0, const OtherNodeType& other1, + CombineOp& op) +{ + CombineArgs args; + + for (Index i = 0; i < NUM_VALUES; ++i) { + if (other0.isChildMaskOff(i) && other1.isChildMaskOff(i)) { + op(args.setARef(other0.mNodes[i].getValue()) + .setAIsActive(other0.isValueMaskOn(i)) + .setBRef(other1.mNodes[i].getValue()) + .setBIsActive(other1.isValueMaskOn(i))); + // Replace child i with a constant value. + this->makeChildNodeEmpty(i, args.result()); + mValueMask.set(i, args.resultIsActive()); + } else { + if (this->isChildMaskOff(i)) { + // Add a new child with the same coordinates, etc. as the other node's child. + const Coord& childOrigin = other0.isChildMaskOn(i) + ? other0.mNodes[i].getChild()->origin() + : other1.mNodes[i].getChild()->origin(); + this->setChildNode(i, new ChildNodeType(childOrigin, mNodes[i].getValue())); + } + + if (other0.isChildMaskOff(i)) { + // Combine node1's child with node0's constant value + // and write the result into child i. + mNodes[i].getChild()->combine2(other0.mNodes[i].getValue(), + *other1.mNodes[i].getChild(), other0.isValueMaskOn(i), op); + } else if (other1.isChildMaskOff(i)) { + // Combine node0's child with node1's constant value + // and write the result into child i. + mNodes[i].getChild()->combine2(*other0.mNodes[i].getChild(), + other1.mNodes[i].getValue(), other1.isValueMaskOn(i), op); + } else { + // Combine node0's child with node1's child + // and write the result into child i. + mNodes[i].getChild()->combine2(*other0.mNodes[i].getChild(), + *other1.mNodes[i].getChild(), op); + } + } + } +} + + +template +template +inline void +InternalNode::combine2(const ValueType& value, const OtherNodeType& other, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + + for (Index i = 0; i < NUM_VALUES; ++i) { + if (other.isChildMaskOff(i)) { + op(args.setARef(value) + .setAIsActive(valueIsActive) + .setBRef(other.mNodes[i].getValue()) + .setBIsActive(other.isValueMaskOn(i))); + // Replace child i with a constant value. + this->makeChildNodeEmpty(i, args.result()); + mValueMask.set(i, args.resultIsActive()); + } else { + typename OtherNodeType::ChildNodeType* otherChild = other.mNodes[i].getChild(); + assert(otherChild); + if (this->isChildMaskOff(i)) { + // Add a new child with the same coordinates, etc. + // as the other node's child. + this->setChildNode(i, new ChildNodeType(*otherChild)); + } + // Combine the other node's child with a constant value + // and write the result into child i. + mNodes[i].getChild()->combine2(value, *otherChild, valueIsActive, op); + } + } +} + + +template +template +inline void +InternalNode::combine2(const InternalNode& other, const OtherValueType& value, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + + for (Index i = 0; i < NUM_VALUES; ++i) { + if (other.isChildMaskOff(i)) { + op(args.setARef(other.mNodes[i].getValue()) + .setAIsActive(other.isValueMaskOn(i)) + .setBRef(value) + .setBIsActive(valueIsActive)); + // Replace child i with a constant value. + this->makeChildNodeEmpty(i, args.result()); + mValueMask.set(i, args.resultIsActive()); + } else { + ChildNodeType* otherChild = other.mNodes[i].getChild(); + assert(otherChild); + if (this->isChildMaskOff(i)) { + // Add a new child with the same coordinates, etc. as the other node's child. + this->setChildNode(i, + new ChildNodeType(otherChild->origin(), mNodes[i].getValue())); + } + // Combine the other node's child with a constant value + // and write the result into child i. + mNodes[i].getChild()->combine2(*otherChild, value, valueIsActive, op); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::visitActiveBBox(BBoxOp& op) const +{ + for (ValueOnCIter i = this->cbeginValueOn(); i; ++i) { +#ifdef _MSC_VER + op.operator()(CoordBBox::createCube(i.getCoord(), ChildNodeType::DIM)); +#else + op.template operator()(CoordBBox::createCube(i.getCoord(), ChildNodeType::DIM)); +#endif + } + if (op.template descent()) { + for (ChildOnCIter i = this->cbeginChildOn(); i; ++i) i->visitActiveBBox(op); + } else { + for (ChildOnCIter i = this->cbeginChildOn(); i; ++i) { +#ifdef _MSC_VER + op.operator()(i->getNodeBoundingBox()); +#else + op.template operator()(i->getNodeBoundingBox()); +#endif + } + } +} + + +template +template +inline void +InternalNode::visit(VisitorOp& op) +{ + doVisit(*this, op); +} + + +template +template +inline void +InternalNode::visit(VisitorOp& op) const +{ + doVisit(*this, op); +} + + +template +template +inline void +InternalNode::doVisit(NodeT& self, VisitorOp& op) +{ + typename NodeT::ValueType val; + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + if (op(iter)) continue; + if (typename ChildAllIterT::ChildNodeType* child = iter.probeChild(val)) { + child->visit(op); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::visit2Node(OtherNodeType& other, VisitorOp& op) +{ + doVisit2Node(*this, other, op); +} + + +template +template +inline void +InternalNode::visit2Node(OtherNodeType& other, VisitorOp& op) const +{ + doVisit2Node(*this, other, op); +} + + +template +template< + typename NodeT, + typename OtherNodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +InternalNode::doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp& op) +{ + // Allow the two nodes to have different ValueTypes, but not different dimensions. + static_assert(OtherNodeT::NUM_VALUES == NodeT::NUM_VALUES, + "visit2() requires nodes to have the same dimensions"); + static_assert(OtherNodeT::LEVEL == NodeT::LEVEL, + "visit2() requires nodes to be at the same tree level"); + + typename NodeT::ValueType val; + typename OtherNodeT::ValueType otherVal; + + ChildAllIterT iter = self.beginChildAll(); + OtherChildAllIterT otherIter = other.beginChildAll(); + + for ( ; iter && otherIter; ++iter, ++otherIter) + { + const size_t skipBranch = static_cast(op(iter, otherIter)); + + typename ChildAllIterT::ChildNodeType* child = + (skipBranch & 1U) ? nullptr : iter.probeChild(val); + typename OtherChildAllIterT::ChildNodeType* otherChild = + (skipBranch & 2U) ? nullptr : otherIter.probeChild(otherVal); + + if (child != nullptr && otherChild != nullptr) { + child->visit2Node(*otherChild, op); + } else if (child != nullptr) { + child->visit2(otherIter, op); + } else if (otherChild != nullptr) { + otherChild->visit2(iter, op, /*otherIsLHS=*/true); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::visit2(OtherChildAllIterType& otherIter, + VisitorOp& op, bool otherIsLHS) +{ + doVisit2( + *this, otherIter, op, otherIsLHS); +} + + +template +template +inline void +InternalNode::visit2(OtherChildAllIterType& otherIter, + VisitorOp& op, bool otherIsLHS) const +{ + doVisit2( + *this, otherIter, op, otherIsLHS); +} + + +template +template +inline void +InternalNode::doVisit2(NodeT& self, OtherChildAllIterT& otherIter, + VisitorOp& op, bool otherIsLHS) +{ + if (!otherIter) return; + + const size_t skipBitMask = (otherIsLHS ? 2U : 1U); + + typename NodeT::ValueType val; + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + const size_t skipBranch = static_cast( + otherIsLHS ? op(otherIter, iter) : op(iter, otherIter)); + + typename ChildAllIterT::ChildNodeType* child = + (skipBranch & skipBitMask) ? nullptr : iter.probeChild(val); + + if (child != nullptr) child->visit2(otherIter, op, otherIsLHS); + } +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::writeBuffers(std::ostream& os, bool toHalf) const +{ + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + iter->writeBuffers(os, toHalf); + } +} + + +template +inline void +InternalNode::readBuffers(std::istream& is, bool fromHalf) +{ + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + iter->readBuffers(is, fromHalf); + } +} + + +template +inline void +InternalNode::readBuffers(std::istream& is, + const CoordBBox& clipBBox, bool fromHalf) +{ + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + // Stream in the branch rooted at this child. + // (We can't skip over children that lie outside the clipping region, + // because buffers are serialized in depth-first order and need to be + // unserialized in the same order.) + iter->readBuffers(is, clipBBox, fromHalf); + } + + // Get this tree's background value. + ValueType background = zeroVal(); + if (const void* bgPtr = io::getGridBackgroundValuePtr(is)) { + background = *static_cast(bgPtr); + } + this->clip(clipBBox, background); +} + + +//////////////////////////////////////// + + +template +void +InternalNode::getNodeLog2Dims(std::vector& dims) +{ + dims.push_back(Log2Dim); + ChildNodeType::getNodeLog2Dims(dims); +} + + +template +inline void +InternalNode::offsetToLocalCoord(Index n, Coord &xyz) +{ + assert(n<(1<<3*Log2Dim)); + xyz.setX(n >> 2*Log2Dim); + n &= ((1<<2*Log2Dim)-1); + xyz.setY(n >> Log2Dim); + xyz.setZ(n & ((1< +inline Index +InternalNode::coordToOffset(const Coord& xyz) +{ + return (((xyz[0] & (DIM-1u)) >> ChildNodeType::TOTAL) << 2*Log2Dim) + + (((xyz[1] & (DIM-1u)) >> ChildNodeType::TOTAL) << Log2Dim) + + ((xyz[2] & (DIM-1u)) >> ChildNodeType::TOTAL); +} + + +template +inline Coord +InternalNode::offsetToGlobalCoord(Index n) const +{ + Coord local; + this->offsetToLocalCoord(n, local); + local <<= ChildT::TOTAL; + return local + this->origin(); +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::getNodes(ArrayT& array) +{ + using T = typename ArrayT::value_type; + static_assert(std::is_pointer::value, "argument to getNodes() must be a pointer array"); + using ArrayChildT = typename std::conditional< + std::is_const::type>::value, const ChildT, ChildT>::type; + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.push_back(reinterpret_cast(mNodes[iter.pos()].getChild())); + } else { + iter->getNodes(array);//descent + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } +} + +template +template +inline void +InternalNode::getNodes(ArrayT& array) const +{ + using T = typename ArrayT::value_type; + static_assert(std::is_pointer::value, "argument to getNodes() must be a pointer array"); + static_assert(std::is_const::type>::value, + "argument to getNodes() must be an array of const node pointers"); + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.push_back(reinterpret_cast(mNodes[iter.pos()].getChild())); + } else { + iter->getNodes(array);//descent + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } +} + + +//////////////////////////////////////// + + +template +template +inline void +InternalNode::stealNodes(ArrayT& array, const ValueType& value, bool state) +{ + using T = typename ArrayT::value_type; + static_assert(std::is_pointer::value, "argument to stealNodes() must be a pointer array"); + using ArrayChildT = typename std::conditional< + std::is_const::type>::value, const ChildT, ChildT>::type; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + for (ChildOnIter iter = this->beginChildOn(); iter; ++iter) { + const Index n = iter.pos(); + if (std::is_same::value) { + array.push_back(reinterpret_cast(mNodes[n].getChild())); + mValueMask.set(n, state); + mNodes[n].setValue(value); + } else { + iter->stealNodes(array, value, state);//descent + } + } + if (std::is_same::value) mChildMask.setOff(); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +inline void +InternalNode::resetBackground(const ValueType& oldBackground, + const ValueType& newBackground) +{ + if (math::isExactlyEqual(oldBackground, newBackground)) return; + for (Index i = 0; i < NUM_VALUES; ++i) { + if (this->isChildMaskOn(i)) { + mNodes[i].getChild()->resetBackground(oldBackground, newBackground); + } else if (this->isValueMaskOff(i)) { + if (math::isApproxEqual(mNodes[i].getValue(), oldBackground)) { + mNodes[i].setValue(newBackground); + } else if (math::isApproxEqual(mNodes[i].getValue(), math::negative(oldBackground))) { + mNodes[i].setValue(math::negative(newBackground)); + } + } + } +} + +template +template +inline bool +InternalNode::hasSameTopology( + const InternalNode* other) const +{ + if (Log2Dim != OtherLog2Dim || mChildMask != other->mChildMask || + mValueMask != other->mValueMask) return false; + for (ChildOnCIter iter = this->cbeginChildOn(); iter; ++iter) { + if (!iter->hasSameTopology(other->mNodes[iter.pos()].getChild())) return false; + } + return true; +} + + +template +inline void +InternalNode::resetChildNode(Index i, ChildNodeType* child) +{ + assert(child); + if (this->isChildMaskOn(i)) { + delete mNodes[i].getChild(); + } else { + mChildMask.setOn(i); + mValueMask.setOff(i); + } + mNodes[i].setChild(child); +} + +template +inline void +InternalNode::setChildNode(Index i, ChildNodeType* child) +{ + assert(child); + assert(mChildMask.isOff(i)); + mChildMask.setOn(i); + mValueMask.setOff(i); + mNodes[i].setChild(child); +} + + +template +inline ChildT* +InternalNode::unsetChildNode(Index i, const ValueType& value) +{ + if (this->isChildMaskOff(i)) { + mNodes[i].setValue(value); + return nullptr; + } + ChildNodeType* child = mNodes[i].getChild(); + mChildMask.setOff(i); + mNodes[i].setValue(value); + return child; +} + + +template +inline void +InternalNode::makeChildNodeEmpty(Index n, const ValueType& value) +{ + delete this->unsetChildNode(n, value); +} + +template +inline ChildT* +InternalNode::getChildNode(Index n) +{ + assert(this->isChildMaskOn(n)); + return mNodes[n].getChild(); +} + + +template +inline const ChildT* +InternalNode::getChildNode(Index n) const +{ + assert(this->isChildMaskOn(n)); + return mNodes[n].getChild(); +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_INTERNALNODE_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/Iterator.h b/openvdb/tree/Iterator.h new file mode 100644 index 00000000..d3512aa0 --- /dev/null +++ b/openvdb/tree/Iterator.h @@ -0,0 +1,253 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file tree/Iterator.h +/// +/// @author Peter Cucka and Ken Museth + +#ifndef OPENVDB_TREE_ITERATOR_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_ITERATOR_HAS_BEEN_INCLUDED + +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +/// @brief Base class for iterators over internal and leaf nodes +/// +/// This class is typically not instantiated directly, since it doesn't provide methods +/// to dereference the iterator. Those methods (@vdblink::tree::SparseIteratorBase::operator*() +/// operator*()@endlink, @vdblink::tree::SparseIteratorBase::setValue() setValue()@endlink, etc.) +/// are implemented in the @vdblink::tree::SparseIteratorBase sparse@endlink and +/// @vdblink::tree::DenseIteratorBase dense@endlink iterator subclasses. +template +class IteratorBase +{ +public: + IteratorBase(): mParentNode(nullptr) {} + IteratorBase(const MaskIterT& iter, NodeT* parent): mParentNode(parent), mMaskIter(iter) {} + IteratorBase(const IteratorBase&) = default; + IteratorBase& operator=(const IteratorBase&) = default; + + bool operator==(const IteratorBase& other) const + { + return (mParentNode == other.mParentNode) && (mMaskIter == other.mMaskIter); + } + bool operator!=(const IteratorBase& other) const + { + return !(*this == other); + } + + /// Return a pointer to the node (if any) over which this iterator is iterating. + NodeT* getParentNode() const { return mParentNode; } + /// @brief Return a reference to the node over which this iterator is iterating. + /// @throw ValueError if there is no parent node. + NodeT& parent() const + { + if (!mParentNode) OPENVDB_THROW(ValueError, "iterator references a null node"); + return *mParentNode; + } + + /// Return this iterator's position as an index into the parent node's table. + Index offset() const { return mMaskIter.offset(); } + + /// Identical to offset + Index pos() const { return mMaskIter.offset(); } + + /// Return @c true if this iterator is not yet exhausted. + bool test() const { return mMaskIter.test(); } + /// Return @c true if this iterator is not yet exhausted. + operator bool() const { return this->test(); } + + /// Advance to the next item in the parent node's table. + bool next() { return mMaskIter.next(); } + /// Advance to the next item in the parent node's table. + void increment() { mMaskIter.increment(); } + /// Advance to the next item in the parent node's table. + IteratorBase& operator++() { this->increment(); return *this; } + /// Advance @a n items in the parent node's table. + void increment(Index n) { mMaskIter.increment(n); } + + /// @brief Return @c true if this iterator is pointing to an active value. + /// Return @c false if it is pointing to either an inactive value or a child node. + bool isValueOn() const { return parent().isValueMaskOn(this->pos()); } + /// @brief If this iterator is pointing to a value, set the value's active state. + /// Otherwise, do nothing. + void setValueOn(bool on = true) const { parent().setValueMask(this->pos(), on); } + /// @brief If this iterator is pointing to a value, mark the value as inactive. + /// @details If this iterator is pointing to a child node, then the current item + /// in the parent node's table is required to be inactive. In that case, + /// this method has no effect. + void setValueOff() const { parent().mValueMask.setOff(this->pos()); } + + /// Return the coordinates of the item to which this iterator is pointing. + Coord getCoord() const { return parent().offsetToGlobalCoord(this->pos()); } + /// Return in @a xyz the coordinates of the item to which this iterator is pointing. + void getCoord(Coord& xyz) const { xyz = this->getCoord(); } + +private: + /// @note This parent node pointer is mutable, because setValueOn() and + /// setValueOff(), though const, need to call non-const methods on the parent. + /// There is a distinction between a const iterator (e.g., const ValueOnIter), + /// which is an iterator that can't be incremented, and an iterator over + /// a const node (e.g., ValueOnCIter), which might be const or non-const itself + /// but can't call non-const methods like setValue() on the node. + mutable NodeT* mParentNode; + MaskIterT mMaskIter; +}; // class IteratorBase + + +//////////////////////////////////////// + + +/// @brief Base class for sparse iterators over internal and leaf nodes +template< + typename MaskIterT, // mask iterator type (OnIterator, OffIterator, etc.) + typename IterT, // SparseIteratorBase subclass (the "Curiously Recurring Template Pattern") + typename NodeT, // type of node over which to iterate + typename ItemT> // type of value to which this iterator points +struct SparseIteratorBase: public IteratorBase +{ + using NodeType = NodeT; + using ValueType = ItemT; + using NonConstNodeType = typename std::remove_const::type; + using NonConstValueType = typename std::remove_const::type; + static const bool IsSparseIterator = true, IsDenseIterator = false; + + SparseIteratorBase() {} + SparseIteratorBase(const MaskIterT& iter, NodeT* parent): + IteratorBase(iter, parent) {} + + /// @brief Return the item at the given index in the parent node's table. + /// @note All subclasses must implement this accessor. + ItemT& getItem(Index) const; + /// @brief Set the value of the item at the given index in the parent node's table. + /// @note All non-const iterator subclasses must implement this accessor. + void setItem(Index, const ItemT&) const; + + /// Return a reference to the item to which this iterator is pointing. + ItemT& operator*() const { return this->getValue(); } + /// Return a pointer to the item to which this iterator is pointing. + ItemT* operator->() const { return &(this->operator*()); } + + /// Return the item to which this iterator is pointing. + ItemT& getValue() const + { + return static_cast(this)->getItem(this->pos()); // static polymorphism + } + /// @brief Set the value of the item to which this iterator is pointing. + /// (Not valid for const iterators.) + void setValue(const ItemT& value) const + { + static_assert(!std::is_const::value, "setValue() not allowed for const iterators"); + static_cast(this)->setItem(this->pos(), value); // static polymorphism + } + /// @brief Apply a functor to the item to which this iterator is pointing. + /// (Not valid for const iterators.) + /// @param op a functor of the form void op(ValueType&) const that modifies + /// its argument in place + /// @see Tree::modifyValue() + template + void modifyValue(const ModifyOp& op) const + { + static_assert(!std::is_const::value, + "modifyValue() not allowed for const iterators"); + static_cast(this)->modifyItem(this->pos(), op); // static polymorphism + } +}; // class SparseIteratorBase + + +//////////////////////////////////////// + + +/// @brief Base class for dense iterators over internal and leaf nodes +/// @note Dense iterators have no @c %operator*() or @c %operator->(), +/// because their return type would have to vary depending on whether +/// the iterator is pointing to a value or a child node. +template< + typename MaskIterT, // mask iterator type (typically a DenseIterator) + typename IterT, // DenseIteratorBase subclass (the "Curiously Recurring Template Pattern") + typename NodeT, // type of node over which to iterate + typename SetItemT, // type of set value (ChildNodeType, for non-leaf nodes) + typename UnsetItemT> // type of unset value (ValueType, usually) +struct DenseIteratorBase: public IteratorBase +{ + using NodeType = NodeT; + using ValueType = UnsetItemT; + using ChildNodeType = SetItemT; + using NonConstNodeType = typename std::remove_const::type; + using NonConstValueType = typename std::remove_const::type; + using NonConstChildNodeType = typename std::remove_const::type; + static const bool IsSparseIterator = false, IsDenseIterator = true; + + DenseIteratorBase() {} + DenseIteratorBase(const MaskIterT& iter, NodeT* parent): + IteratorBase(iter, parent) {} + + /// @brief Return @c true if the item at the given index in the parent node's table + /// is a set value and return either the set value in @a child or the unset value + /// in @a value. + /// @note All subclasses must implement this accessor. + bool getItem(Index, SetItemT*& child, NonConstValueType& value) const; + /// @brief Set the value of the item at the given index in the parent node's table. + /// @note All non-const iterator subclasses must implement this accessor. + void setItem(Index, SetItemT*) const; + /// @brief "Unset" the value of the item at the given index in the parent node's table. + /// @note All non-const iterator subclasses must implement this accessor. + void unsetItem(Index, const UnsetItemT&) const; + + /// Return @c true if this iterator is pointing to a child node. + bool isChildNode() const { return this->parent().isChildMaskOn(this->pos()); } + + /// @brief If this iterator is pointing to a child node, return a pointer to the node. + /// Otherwise, return nullptr and, in @a value, the value to which this iterator is pointing. + SetItemT* probeChild(NonConstValueType& value) const + { + SetItemT* child = nullptr; + static_cast(this)->getItem(this->pos(), child, value); // static polymorphism + return child; + } + /// @brief If this iterator is pointing to a child node, return @c true and return + /// a pointer to the child node in @a child. Otherwise, return @c false and return + /// the value to which this iterator is pointing in @a value. + bool probeChild(SetItemT*& child, NonConstValueType& value) const + { + child = probeChild(value); + return (child != nullptr); + } + + /// @brief Return @c true if this iterator is pointing to a value and return + /// the value in @a value. Otherwise, return @c false. + bool probeValue(NonConstValueType& value) const + { + SetItemT* child = nullptr; + const bool isChild = static_cast(this)-> // static polymorphism + getItem(this->pos(), child, value); + return !isChild; + } + + /// @brief Replace with the given child node the item in the parent node's table + /// to which this iterator is pointing. + void setChild(SetItemT* child) const + { + static_cast(this)->setItem(this->pos(), child); // static polymorphism + } + + /// @brief Replace with the given value the item in the parent node's table + /// to which this iterator is pointing. + void setValue(const UnsetItemT& value) const + { + static_cast(this)->unsetItem(this->pos(), value); // static polymorphism + } +}; // struct DenseIteratorBase + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_ITERATOR_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/LeafBuffer.h b/openvdb/tree/LeafBuffer.h new file mode 100644 index 00000000..40ec75ef --- /dev/null +++ b/openvdb/tree/LeafBuffer.h @@ -0,0 +1,492 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TREE_LEAFBUFFER_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_LEAFBUFFER_HAS_BEEN_INCLUDED + +#include +#include // for io::readCompressedValues(), etc +#include +#include +#include +#include // for std::swap +#include // for offsetof() +#include +#include +#include + + +class TestLeaf; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +namespace internal { + +/// @internal For delayed loading to be threadsafe, LeafBuffer::mOutOfCore must be +/// memory-fenced when it is set in LeafBuffer::doLoad(), otherwise that operation +/// could be reordered ahead of others in doLoad(), with the possible result that +/// other threads could see the buffer as in-core before it has been fully loaded. +/// Making mOutOfCore a TBB atomic solves the problem, since TBB atomics are release-fenced +/// by default (unlike STL atomics, which are not even guaranteed to be lock-free). +/// However, TBB atomics have stricter alignment requirements than their underlying value_types, +/// so a LeafBuffer with an atomic mOutOfCore is potentially ABI-incompatible with +/// its non-atomic counterpart. +/// This helper class conditionally declares mOutOfCore as an atomic only if doing so +/// doesn't break ABI compatibility. +template +struct LeafBufferFlags +{ +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + /// The type of LeafBuffer::mOutOfCore + using type = tbb::atomic; + static constexpr bool IsAtomic = true; +#else // OPENVDB_ABI_VERSION_NUMBER < 5 + // These structs need to have the same data members as LeafBuffer. + struct Atomic { union { T* data; void* ptr; }; tbb::atomic i; tbb::spin_mutex mutex; }; + struct NonAtomic { union { T* data; void* ptr; }; Index32 i; tbb::spin_mutex mutex; }; + +#ifndef __INTEL_COMPILER + /// @c true if LeafBuffer::mOutOfCore is atomic, @c false otherwise + static constexpr bool IsAtomic = ((sizeof(Atomic) == sizeof(NonAtomic)) + && (offsetof(Atomic, i) == offsetof(NonAtomic, i))); +#else + // We can't use offsetof() with ICC, because it requires the arguments + // to be POD types. (C++11 requires only that they be standard layout types, + // which Atomic and NonAtomic are.) + static constexpr bool IsAtomic = (sizeof(Atomic) == sizeof(NonAtomic)); +#endif + /// The size of a LeafBuffer when LeafBuffer::mOutOfCore is atomic + static constexpr size_t size = sizeof(Atomic); + /// The type of LeafBuffer::mOutOfCore + using type = typename std::conditional, Index32>::type; +#endif +}; + +} // namespace internal + + +/// @brief Array of fixed size 23Log2Dim that stores +/// the voxel values of a LeafNode +template +class LeafBuffer +{ +public: + using ValueType = T; + using StorageType = ValueType; + using NodeMaskType = util::NodeMask; + static const Index SIZE = 1 << 3 * Log2Dim; + + struct FileInfo + { + FileInfo(): bufpos(0) , maskpos(0) {} + std::streamoff bufpos; + std::streamoff maskpos; + io::MappedFile::Ptr mapping; + SharedPtr meta; + }; + + /// Default constructor + inline LeafBuffer(): mData(new ValueType[SIZE]) { mOutOfCore = 0; } + /// Construct a buffer populated with the specified value. + explicit inline LeafBuffer(const ValueType&); + /// Copy constructor + inline LeafBuffer(const LeafBuffer&); + /// Construct a buffer but don't allocate memory for the full array of values. + LeafBuffer(PartialCreate, const ValueType&): mData(nullptr) { mOutOfCore = 0; } + /// Destructor + inline ~LeafBuffer(); + + /// Return @c true if this buffer's values have not yet been read from disk. + bool isOutOfCore() const { return bool(mOutOfCore); } + /// Return @c true if memory for this buffer has not yet been allocated. + bool empty() const { return !mData || this->isOutOfCore(); } + /// Allocate memory for this buffer if it has not already been allocated. + bool allocate() { if (mData == nullptr) mData = new ValueType[SIZE]; return true; } + + /// Populate this buffer with a constant value. + inline void fill(const ValueType&); + + /// Return a const reference to the i'th element of this buffer. + const ValueType& getValue(Index i) const { return this->at(i); } + /// Return a const reference to the i'th element of this buffer. + const ValueType& operator[](Index i) const { return this->at(i); } + /// Set the i'th value of this buffer to the specified value. + inline void setValue(Index i, const ValueType&); + + /// Copy the other buffer's values into this buffer. + inline LeafBuffer& operator=(const LeafBuffer&); + + /// @brief Return @c true if the contents of the other buffer + /// exactly equal the contents of this buffer. + inline bool operator==(const LeafBuffer&) const; + /// @brief Return @c true if the contents of the other buffer + /// are not exactly equal to the contents of this buffer. + inline bool operator!=(const LeafBuffer& other) const { return !(other == *this); } + + /// Exchange this buffer's values with the other buffer's values. + inline void swap(LeafBuffer&); + + /// Return the memory footprint of this buffer in bytes. + inline Index memUsage() const; + /// Return the number of values contained in this buffer. + static Index size() { return SIZE; } + + /// @brief Return a const pointer to the array of voxel values. + /// @details This method guarantees that the buffer is allocated and loaded. + /// @warning This method should only be used by experts seeking low-level optimizations. + const ValueType* data() const; + /// @brief Return a pointer to the array of voxel values. + /// @details This method guarantees that the buffer is allocated and loaded. + /// @warning This method should only be used by experts seeking low-level optimizations. + ValueType* data(); + +private: + /// If this buffer is empty, return zero, otherwise return the value at index @ i. + inline const ValueType& at(Index i) const; + + /// @brief Return a non-const reference to the value at index @a i. + /// @details This method is private since it makes assumptions about the + /// buffer's memory layout. LeafBuffers associated with custom leaf node types + /// (e.g., a bool buffer implemented as a bitmask) might not be able to + /// return non-const references to their values. + ValueType& operator[](Index i) { return const_cast(this->at(i)); } + + bool deallocate(); + + inline void setOutOfCore(bool b) { mOutOfCore = b; } + // To facilitate inlining in the common case in which the buffer is in-core, + // the loading logic is split into a separate function, doLoad(). + inline void loadValues() const { if (this->isOutOfCore()) this->doLoad(); } + inline void doLoad() const; + inline bool detachFromFile(); + + using FlagsType = typename internal::LeafBufferFlags::type; + + union { + ValueType* mData; + FileInfo* mFileInfo; + }; + FlagsType mOutOfCore; // interpreted as bool; extra bits reserved for future use + tbb::spin_mutex mMutex; // 1 byte + //int8_t mReserved[3]; // padding for alignment + + static const ValueType sZero; + + friend class ::TestLeaf; + // Allow the parent LeafNode to access this buffer's data pointer. + template friend class LeafNode; +}; // class LeafBuffer + + +//////////////////////////////////////// + + +template +const T LeafBuffer::sZero = zeroVal(); + + +template +inline +LeafBuffer::LeafBuffer(const ValueType& val) + : mData(new ValueType[SIZE]) +{ + mOutOfCore = 0; + this->fill(val); +} + + +template +inline +LeafBuffer::~LeafBuffer() +{ + if (this->isOutOfCore()) { + this->detachFromFile(); + } else { + this->deallocate(); + } +} + + +template +inline +LeafBuffer::LeafBuffer(const LeafBuffer& other) + : mData(nullptr) + , mOutOfCore(other.mOutOfCore) +{ + if (other.isOutOfCore()) { + mFileInfo = new FileInfo(*other.mFileInfo); + } else if (other.mData != nullptr) { + this->allocate(); + ValueType* target = mData; + const ValueType* source = other.mData; + Index n = SIZE; + while (n--) *target++ = *source++; + } +} + + +template +inline void +LeafBuffer::setValue(Index i, const ValueType& val) +{ + assert(i < SIZE); + this->loadValues(); + if (mData) mData[i] = val; +} + + +template +inline LeafBuffer& +LeafBuffer::operator=(const LeafBuffer& other) +{ + if (&other != this) { + if (this->isOutOfCore()) { + this->detachFromFile(); + } else { + if (other.isOutOfCore()) this->deallocate(); + } + if (other.isOutOfCore()) { + mOutOfCore = other.mOutOfCore; + mFileInfo = new FileInfo(*other.mFileInfo); + } else if (other.mData != nullptr) { + this->allocate(); + ValueType* target = mData; + const ValueType* source = other.mData; + Index n = SIZE; + while (n--) *target++ = *source++; + } + } + return *this; +} + + +template +inline void +LeafBuffer::fill(const ValueType& val) +{ + this->detachFromFile(); + if (mData != nullptr) { + ValueType* target = mData; + Index n = SIZE; + while (n--) *target++ = val; + } +} + + +template +inline bool +LeafBuffer::operator==(const LeafBuffer& other) const +{ + this->loadValues(); + other.loadValues(); + const ValueType *target = mData, *source = other.mData; + if (!target && !source) return true; + if (!target || !source) return false; + Index n = SIZE; + while (n && math::isExactlyEqual(*target++, *source++)) --n; + return n == 0; +} + + +template +inline void +LeafBuffer::swap(LeafBuffer& other) +{ + std::swap(mData, other.mData); + std::swap(mOutOfCore, other.mOutOfCore); +} + + +template +inline Index +LeafBuffer::memUsage() const +{ + size_t n = sizeof(*this); + if (this->isOutOfCore()) n += sizeof(FileInfo); + else if (mData) n += SIZE * sizeof(ValueType); + return static_cast(n); +} + + +template +inline const typename LeafBuffer::ValueType* +LeafBuffer::data() const +{ + this->loadValues(); + if (mData == nullptr) { + LeafBuffer* self = const_cast(this); + // This lock will be contended at most once. + tbb::spin_mutex::scoped_lock lock(self->mMutex); + if (mData == nullptr) self->mData = new ValueType[SIZE]; + } + return mData; +} + +template +inline typename LeafBuffer::ValueType* +LeafBuffer::data() +{ + this->loadValues(); + if (mData == nullptr) { + // This lock will be contended at most once. + tbb::spin_mutex::scoped_lock lock(mMutex); + if (mData == nullptr) mData = new ValueType[SIZE]; + } + return mData; +} + + +template +inline const typename LeafBuffer::ValueType& +LeafBuffer::at(Index i) const +{ + assert(i < SIZE); + this->loadValues(); + // We can't use the ternary operator here, otherwise Visual C++ returns + // a reference to a temporary. + if (mData) return mData[i]; else return sZero; +} + + +template +inline bool +LeafBuffer::deallocate() +{ + if (mData != nullptr && !this->isOutOfCore()) { + delete[] mData; + mData = nullptr; + return true; + } + return false; +} + + +template +inline void +LeafBuffer::doLoad() const +{ + if (!this->isOutOfCore()) return; + + LeafBuffer* self = const_cast*>(this); + + // This lock will be contended at most once, after which this buffer + // will no longer be out-of-core. + tbb::spin_mutex::scoped_lock lock(self->mMutex); + if (!this->isOutOfCore()) return; + + std::unique_ptr info(self->mFileInfo); + assert(info.get() != nullptr); + assert(info->mapping.get() != nullptr); + assert(info->meta.get() != nullptr); + + /// @todo For now, we have to clear the mData pointer in order for allocate() to take effect. + self->mData = nullptr; + self->allocate(); + + SharedPtr buf = info->mapping->createBuffer(); + std::istream is(buf.get()); + + io::setStreamMetadataPtr(is, info->meta, /*transfer=*/true); + + NodeMaskType mask; + is.seekg(info->maskpos); + mask.load(is); + + is.seekg(info->bufpos); + io::readCompressedValues(is, self->mData, SIZE, mask, io::getHalfFloat(is)); + + self->setOutOfCore(false); +} + + +template +inline bool +LeafBuffer::detachFromFile() +{ + if (this->isOutOfCore()) { + delete mFileInfo; + mFileInfo = nullptr; + this->setOutOfCore(false); + return true; + } + return false; +} + + +//////////////////////////////////////// + + +// Partial specialization for bool ValueType +template +class LeafBuffer +{ +public: + using NodeMaskType = util::NodeMask; + using WordType = typename NodeMaskType::Word; + using ValueType = bool; + using StorageType = WordType; + + static const Index WORD_COUNT = NodeMaskType::WORD_COUNT; + static const Index SIZE = 1 << 3 * Log2Dim; + + // These static declarations must be on separate lines to avoid VC9 compiler errors. + static const bool sOn; + static const bool sOff; + + LeafBuffer() {} + LeafBuffer(bool on): mData(on) {} + LeafBuffer(const NodeMaskType& other): mData(other) {} + LeafBuffer(const LeafBuffer& other): mData(other.mData) {} + ~LeafBuffer() {} + void fill(bool val) { mData.set(val); } + LeafBuffer& operator=(const LeafBuffer& b) { if (&b != this) { mData=b.mData; } return *this; } + + const bool& getValue(Index i) const + { + assert(i < SIZE); + // We can't use the ternary operator here, otherwise Visual C++ returns + // a reference to a temporary. + if (mData.isOn(i)) return sOn; else return sOff; + } + const bool& operator[](Index i) const { return this->getValue(i); } + + bool operator==(const LeafBuffer& other) const { return mData == other.mData; } + bool operator!=(const LeafBuffer& other) const { return mData != other.mData; } + + void setValue(Index i, bool val) { assert(i < SIZE); mData.set(i, val); } + + void swap(LeafBuffer& other) { if (&other != this) std::swap(mData, other.mData); } + + Index memUsage() const { return sizeof(*this); } + static Index size() { return SIZE; } + + /// @brief Return a pointer to the C-style array of words encoding the bits. + /// @warning This method should only be used by experts seeking low-level optimizations. + WordType* data() { return &(mData.template getWord(0)); } + /// @brief Return a const pointer to the C-style array of words encoding the bits. + /// @warning This method should only be used by experts seeking low-level optimizations. + const WordType* data() const { return const_cast(this)->data(); } + +private: + // Allow the parent LeafNode to access this buffer's data. + template friend class LeafNode; + + NodeMaskType mData; +}; // class LeafBuffer + + +/// @internal For consistency with other nodes and with iterators, methods like +/// LeafNode::getValue() return a reference to a value. Since it's not possible +/// to return a reference to a bit in a node mask, we return a reference to one +/// of the following static values instead. +template const bool LeafBuffer::sOn = true; +template const bool LeafBuffer::sOff = false; + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_LEAFBUFFER_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/LeafManager.h b/openvdb/tree/LeafManager.h new file mode 100644 index 00000000..06b91365 --- /dev/null +++ b/openvdb/tree/LeafManager.h @@ -0,0 +1,822 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file LeafManager.h +/// +/// @brief A LeafManager manages a linear array of pointers to a given tree's +/// leaf nodes, as well as optional auxiliary buffers (one or more per leaf) +/// that can be swapped with the leaf nodes' voxel data buffers. +/// @details The leaf array is useful for multithreaded computations over +/// leaf voxels in a tree with static topology but varying voxel values. +/// The auxiliary buffers are convenient for temporal integration. +/// Efficient methods are provided for multithreaded swapping and synching +/// (i.e., copying the contents) of these buffers. + +#ifndef OPENVDB_TREE_LEAFMANAGER_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_LEAFMANAGER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +namespace leafmgr { + +//@{ +/// Useful traits for Tree types +template struct TreeTraits { + static const bool IsConstTree = false; + using LeafIterType = typename TreeT::LeafIter; +}; +template struct TreeTraits { + static const bool IsConstTree = true; + using LeafIterType = typename TreeT::LeafCIter; +}; +//@} + +} // namespace leafmgr + + +/// This helper class implements LeafManager methods that need to be +/// specialized for const vs. non-const trees. +template +struct LeafManagerImpl +{ + using RangeT = typename ManagerT::RangeType; + using LeafT = typename ManagerT::LeafType; + using BufT = typename ManagerT::BufferType; + + static inline void doSwapLeafBuffer(const RangeT& r, size_t auxBufferIdx, + LeafT** leafs, BufT* bufs, size_t bufsPerLeaf) + { + for (size_t n = r.begin(), m = r.end(), N = bufsPerLeaf; n != m; ++n) { + leafs[n]->swap(bufs[n * N + auxBufferIdx]); + } + } +}; + + +//////////////////////////////////////// + + +/// @brief This class manages a linear array of pointers to a given tree's +/// leaf nodes, as well as optional auxiliary buffers (one or more per leaf) +/// that can be swapped with the leaf nodes' voxel data buffers. +/// @details The leaf array is useful for multithreaded computations over +/// leaf voxels in a tree with static topology but varying voxel values. +/// The auxiliary buffers are convenient for temporal integration. +/// Efficient methods are provided for multithreaded swapping and sync'ing +/// (i.e., copying the contents) of these buffers. +/// +/// @note Buffer index 0 denotes a leaf node's internal voxel data buffer. +/// Any auxiliary buffers are indexed starting from one. +template +class LeafManager +{ +public: + using TreeType = TreeT; + using ValueType = typename TreeT::ValueType; + using RootNodeType = typename TreeT::RootNodeType; + using NonConstLeafType = typename TreeType::LeafNodeType; + using LeafType = typename CopyConstness::Type; + using LeafNodeType = LeafType; + using LeafIterType = typename leafmgr::TreeTraits::LeafIterType; + using NonConstBufferType = typename LeafType::Buffer; + using BufferType = typename CopyConstness::Type; + using RangeType = tbb::blocked_range; // leaf index range + static const Index DEPTH = 2; // root + leaf nodes + + static const bool IsConstTree = leafmgr::TreeTraits::IsConstTree; + + class LeafRange + { + public: + class Iterator + { + public: + Iterator(const LeafRange& range, size_t pos): mRange(range), mPos(pos) + { + assert(this->isValid()); + } + Iterator(const Iterator&) = default; + Iterator& operator=(const Iterator&) = default; + /// Advance to the next leaf node. + Iterator& operator++() { ++mPos; return *this; } + /// Return a reference to the leaf node to which this iterator is pointing. + LeafType& operator*() const { return mRange.mLeafManager.leaf(mPos); } + /// Return a pointer to the leaf node to which this iterator is pointing. + LeafType* operator->() const { return &(this->operator*()); } + /// @brief Return the nth buffer for the leaf node to which this iterator is pointing, + /// where n = @a bufferIdx and n = 0 corresponds to the leaf node's own buffer. + BufferType& buffer(size_t bufferIdx) + { + return mRange.mLeafManager.getBuffer(mPos, bufferIdx); + } + /// Return the index into the leaf array of the current leaf node. + size_t pos() const { return mPos; } + /// Return @c true if the position of this iterator is in a valid range. + bool isValid() const { return mPos>=mRange.mBegin && mPos<=mRange.mEnd; } + /// Return @c true if this iterator is not yet exhausted. + bool test() const { return mPos < mRange.mEnd; } + /// Return @c true if this iterator is not yet exhausted. + operator bool() const { return this->test(); } + /// Return @c true if this iterator is exhausted. + bool empty() const { return !this->test(); } + bool operator!=(const Iterator& other) const + { + return (mPos != other.mPos) || (&mRange != &other.mRange); + } + bool operator==(const Iterator& other) const { return !(*this != other); } + const LeafRange& leafRange() const { return mRange; } + + private: + const LeafRange& mRange; + size_t mPos; + };// end Iterator + + LeafRange(size_t begin, size_t end, const LeafManager& leafManager, size_t grainSize=1) + : mEnd(end) + , mBegin(begin) + , mGrainSize(grainSize) + , mLeafManager(leafManager) + { + } + + Iterator begin() const {return Iterator(*this, mBegin);} + + Iterator end() const {return Iterator(*this, mEnd);} + + size_t size() const { return mEnd - mBegin; } + + size_t grainsize() const { return mGrainSize; } + + const LeafManager& leafManager() const { return mLeafManager; } + + bool empty() const {return !(mBegin < mEnd);} + + bool is_divisible() const {return mGrainSize < this->size();} + + LeafRange(LeafRange& r, tbb::split) + : mEnd(r.mEnd) + , mBegin(doSplit(r)) + , mGrainSize(r.mGrainSize) + , mLeafManager(r.mLeafManager) + { + } + + private: + size_t mEnd, mBegin, mGrainSize; + const LeafManager& mLeafManager; + + static size_t doSplit(LeafRange& r) + { + assert(r.is_divisible()); + size_t middle = r.mBegin + (r.mEnd - r.mBegin) / 2u; + r.mEnd = middle; + return middle; + } + };// end of LeafRange + + /// @brief Constructor from a tree reference and an auxiliary buffer count + /// @note The default is no auxiliary buffers + LeafManager(TreeType& tree, size_t auxBuffersPerLeaf=0, bool serial=false) + : mTree(&tree) + , mLeafCount(0) + , mAuxBufferCount(0) + , mAuxBuffersPerLeaf(auxBuffersPerLeaf) + , mLeafs(nullptr) + , mAuxBuffers(nullptr) + , mTask(nullptr) + , mIsMaster(true) + { + this->rebuild(serial); + } + + /// @brief Construct directly from an existing array of leafnodes. + /// @warning The leafnodes are implicitly assumed to exist in the + /// input @a tree. + LeafManager(TreeType& tree, LeafType** begin, LeafType** end, + size_t auxBuffersPerLeaf=0, bool serial=false) + : mTree(&tree) + , mLeafCount(end-begin) + , mAuxBufferCount(0) + , mAuxBuffersPerLeaf(auxBuffersPerLeaf) + , mLeafs(new LeafType*[mLeafCount]) + , mAuxBuffers(nullptr) + , mTask(nullptr) + , mIsMaster(true) + { + size_t n = mLeafCount; + LeafType **target = mLeafs, **source = begin; + while (n--) *target++ = *source++; + if (auxBuffersPerLeaf) this->initAuxBuffers(serial); + } + + /// Shallow copy constructor called by tbb::parallel_for() threads + /// + /// @note This should never get called directly + LeafManager(const LeafManager& other) + : mTree(other.mTree) + , mLeafCount(other.mLeafCount) + , mAuxBufferCount(other.mAuxBufferCount) + , mAuxBuffersPerLeaf(other.mAuxBuffersPerLeaf) + , mLeafs(other.mLeafs) + , mAuxBuffers(other.mAuxBuffers) + , mTask(other.mTask) + , mIsMaster(false) + { + } + + virtual ~LeafManager() + { + if (mIsMaster) { + delete [] mLeafs; + delete [] mAuxBuffers; + } + } + + /// @brief (Re)initialize by resizing (if necessary) and repopulating the leaf array + /// and by deleting existing auxiliary buffers and allocating new ones. + /// @details Call this method if the tree's topology, and therefore the number + /// of leaf nodes, changes. New auxiliary buffers are initialized with copies + /// of corresponding leaf node buffers. + void rebuild(bool serial=false) + { + this->initLeafArray(); + this->initAuxBuffers(serial); + } + //@{ + /// Repopulate the leaf array and delete and reallocate auxiliary buffers. + void rebuild(size_t auxBuffersPerLeaf, bool serial=false) + { + mAuxBuffersPerLeaf = auxBuffersPerLeaf; + this->rebuild(serial); + } + void rebuild(TreeType& tree, bool serial=false) + { + mTree = &tree; + this->rebuild(serial); + } + void rebuild(TreeType& tree, size_t auxBuffersPerLeaf, bool serial=false) + { + mTree = &tree; + mAuxBuffersPerLeaf = auxBuffersPerLeaf; + this->rebuild(serial); + } + //@} + /// @brief Change the number of auxiliary buffers. + /// @details If auxBuffersPerLeaf is 0, all existing auxiliary buffers are deleted. + /// New auxiliary buffers are initialized with copies of corresponding leaf node buffers. + /// This method does not rebuild the leaf array. + void rebuildAuxBuffers(size_t auxBuffersPerLeaf, bool serial=false) + { + mAuxBuffersPerLeaf = auxBuffersPerLeaf; + this->initAuxBuffers(serial); + } + /// @brief Remove the auxiliary buffers, but don't rebuild the leaf array. + void removeAuxBuffers() { this->rebuildAuxBuffers(0); } + + /// @brief Remove the auxiliary buffers and rebuild the leaf array. + void rebuildLeafArray() + { + this->removeAuxBuffers(); + this->initLeafArray(); + } + + /// @brief Return the total number of allocated auxiliary buffers. + size_t auxBufferCount() const { return mAuxBufferCount; } + /// @brief Return the number of auxiliary buffers per leaf node. + size_t auxBuffersPerLeaf() const { return mAuxBuffersPerLeaf; } + + /// @brief Return the number of leaf nodes. + size_t leafCount() const { return mLeafCount; } + + /// @brief Return the number of active voxels in the leaf nodes. + /// @note Multi-threaded for better performance than Tree::activeLeafVoxelCount + Index64 activeLeafVoxelCount() const + { + return tbb::parallel_reduce(this->leafRange(), Index64(0), + [] (const LeafRange& range, Index64 sum) -> Index64 { + for (const auto& leaf: range) { sum += leaf.onVoxelCount(); } + return sum; + }, + [] (Index64 n, Index64 m) -> Index64 { return n + m; }); + } + + /// Return a const reference to tree associated with this manager. + const TreeType& tree() const { return *mTree; } + + /// Return a reference to the tree associated with this manager. + TreeType& tree() { return *mTree; } + + /// Return a const reference to root node associated with this manager. + const RootNodeType& root() const { return mTree->root(); } + + /// Return a reference to the root node associated with this manager. + RootNodeType& root() { return mTree->root(); } + + /// Return @c true if the tree associated with this manager is immutable. + bool isConstTree() const { return this->IsConstTree; } + + /// @brief Return a pointer to the leaf node at index @a leafIdx in the array. + /// @note For performance reasons no range check is performed (other than an assertion)! + LeafType& leaf(size_t leafIdx) const { assert(leafIdx 0), + /// but it is not safe to modify the leaf buffer (@a bufferIdx = 0). + BufferType& getBuffer(size_t leafIdx, size_t bufferIdx) const + { + assert(leafIdx < mLeafCount); + assert(bufferIdx == 0 || bufferIdx - 1 < mAuxBuffersPerLeaf); + return bufferIdx == 0 ? mLeafs[leafIdx]->buffer() + : mAuxBuffers[leafIdx * mAuxBuffersPerLeaf + bufferIdx - 1]; + } + + /// @brief Return a @c tbb::blocked_range of leaf array indices. + /// + /// @note Consider using leafRange() instead, which provides access methods + /// to leaf nodes and buffers. + RangeType getRange(size_t grainsize = 1) const { return RangeType(0, mLeafCount, grainsize); } + + /// Return a TBB-compatible LeafRange. + LeafRange leafRange(size_t grainsize = 1) const + { + return LeafRange(0, mLeafCount, *this, grainsize); + } + + /// @brief Swap each leaf node's buffer with the nth corresponding auxiliary buffer, + /// where n = @a bufferIdx. + /// @return @c true if the swap was successful + /// @param bufferIdx index of the buffer that will be swapped with + /// the corresponding leaf node buffer + /// @param serial if false, swap buffers in parallel using multiple threads. + /// @note Recall that the indexing of auxiliary buffers is 1-based, since + /// buffer index 0 denotes the leaf node buffer. So buffer index 1 denotes + /// the first auxiliary buffer. + bool swapLeafBuffer(size_t bufferIdx, bool serial = false) + { + namespace ph = std::placeholders; + if (bufferIdx == 0 || bufferIdx > mAuxBuffersPerLeaf || this->isConstTree()) return false; + mTask = std::bind(&LeafManager::doSwapLeafBuffer, ph::_1, ph::_2, bufferIdx - 1); + this->cook(serial ? 0 : 512); + return true;//success + } + /// @brief Swap any two buffers for each leaf node. + /// @note Recall that the indexing of auxiliary buffers is 1-based, since + /// buffer index 0 denotes the leaf node buffer. So buffer index 1 denotes + /// the first auxiliary buffer. + bool swapBuffer(size_t bufferIdx1, size_t bufferIdx2, bool serial = false) + { + namespace ph = std::placeholders; + const size_t b1 = std::min(bufferIdx1, bufferIdx2); + const size_t b2 = std::max(bufferIdx1, bufferIdx2); + if (b1 == b2 || b2 > mAuxBuffersPerLeaf) return false; + if (b1 == 0) { + if (this->isConstTree()) return false; + mTask = std::bind(&LeafManager::doSwapLeafBuffer, ph::_1, ph::_2, b2-1); + } else { + mTask = std::bind(&LeafManager::doSwapAuxBuffer, ph::_1, ph::_2, b1-1, b2-1); + } + this->cook(serial ? 0 : 512); + return true;//success + } + + /// @brief Sync up the specified auxiliary buffer with the corresponding leaf node buffer. + /// @return @c true if the sync was successful + /// @param bufferIdx index of the buffer that will contain a + /// copy of the corresponding leaf node buffer + /// @param serial if false, sync buffers in parallel using multiple threads. + /// @note Recall that the indexing of auxiliary buffers is 1-based, since + /// buffer index 0 denotes the leaf node buffer. So buffer index 1 denotes + /// the first auxiliary buffer. + bool syncAuxBuffer(size_t bufferIdx, bool serial = false) + { + namespace ph = std::placeholders; + if (bufferIdx == 0 || bufferIdx > mAuxBuffersPerLeaf) return false; + mTask = std::bind(&LeafManager::doSyncAuxBuffer, ph::_1, ph::_2, bufferIdx - 1); + this->cook(serial ? 0 : 64); + return true;//success + } + + /// @brief Sync up all auxiliary buffers with their corresponding leaf node buffers. + /// @return true if the sync was successful + /// @param serial if false, sync buffers in parallel using multiple threads. + bool syncAllBuffers(bool serial = false) + { + namespace ph = std::placeholders; + switch (mAuxBuffersPerLeaf) { + case 0: return false;//nothing to do + case 1: mTask = std::bind(&LeafManager::doSyncAllBuffers1, ph::_1, ph::_2); break; + case 2: mTask = std::bind(&LeafManager::doSyncAllBuffers2, ph::_1, ph::_2); break; + default: mTask = std::bind(&LeafManager::doSyncAllBuffersN, ph::_1, ph::_2); break; + } + this->cook(serial ? 0 : 64); + return true;//success + } + + /// @brief Threaded method that applies a user-supplied functor + /// to each leaf node in the LeafManager. + /// + /// @details The user-supplied functor needs to define the methods + /// required for tbb::parallel_for. + /// + /// @param op user-supplied functor, see examples for interface details. + /// @param threaded optional toggle to disable threading, on by default. + /// @param grainSize optional parameter to specify the grainsize + /// for threading, one by default. + /// + /// @warning The functor object is deep-copied to create TBB tasks. + /// This allows the function to use non-thread-safe members + /// like a ValueAccessor. + /// + /// @par Example: + /// @code + /// // Functor to offset a tree's voxel values with values from another tree. + /// template + /// struct OffsetOp + /// { + /// using Accessor = tree::ValueAccessor; + /// + /// OffsetOp(const TreeType& tree): mRhsTreeAcc(tree) {} + /// + /// template + /// void operator()(LeafNodeType &lhsLeaf, size_t) const + /// { + /// const LeafNodeType *rhsLeaf = mRhsTreeAcc.probeConstLeaf(lhsLeaf.origin()); + /// if (rhsLeaf) { + /// typename LeafNodeType::ValueOnIter iter = lhsLeaf.beginValueOn(); + /// for (; iter; ++iter) { + /// iter.setValue(iter.getValue() + rhsLeaf->getValue(iter.pos())); + /// } + /// } + /// } + /// Accessor mRhsTreeAcc; + /// }; + /// + /// // usage: + /// tree::LeafManager leafNodes(lhsTree); + /// leafNodes.foreach(OffsetOp(rhsTree)); + /// + /// // A functor that performs a min operation between different auxiliary buffers. + /// template + /// struct MinOp + /// { + /// using BufferType = typename LeafManagerType::BufferType; + /// + /// MinOp(LeafManagerType& leafNodes): mLeafs(leafNodes) {} + /// + /// template + /// void operator()(LeafNodeType &leaf, size_t leafIndex) const + /// { + /// // get the first buffer + /// BufferType& buffer = mLeafs.getBuffer(leafIndex, 1); + /// + /// // min ... + /// } + /// LeafManagerType& mLeafs; + /// }; + /// @endcode + template + void foreach(const LeafOp& op, bool threaded = true, size_t grainSize=1) + { + LeafTransformer transform(op); + transform.run(this->leafRange(grainSize), threaded); + } + + /// @brief Threaded method that applies a user-supplied functor + /// to each leaf node in the LeafManager. Unlike foreach + /// (defined above) this method performs a reduction on + /// all the leaf nodes. + /// + /// @details The user-supplied functor needs to define the methods + /// required for tbb::parallel_reduce. + /// + /// @param op user-supplied functor, see examples for interface details. + /// @param threaded optional toggle to disable threading, on by default. + /// @param grainSize optional parameter to specify the grainsize + /// for threading, one by default. + /// + /// @warning The functor object is deep-copied to create TBB tasks. + /// This allows the function to use non-thread-safe members + /// like a ValueAccessor. + /// + /// @par Example: + /// @code + /// // Functor to count the number of negative (active) leaf values + /// struct CountOp + /// { + /// CountOp() : mCounter(0) {} + /// CountOp(const CountOp &other) : mCounter(other.mCounter) {} + /// CountOp(const CountOp &other, tbb::split) : mCounter(0) {} + /// template + /// void operator()(LeafNodeType &leaf, size_t) + /// { + /// typename LeafNodeType::ValueOnIter iter = leaf.beginValueOn(); + /// for (; iter; ++iter) if (*iter < 0.0f) ++mCounter; + /// } + /// void join(const CountOp &other) {mCounter += other.mCounter;} + /// size_t mCounter; + /// }; + /// + /// // usage: + /// tree::LeafManager leafNodes(tree); + /// MinValueOp min; + /// leafNodes.reduce(min); + /// std::cerr << "Number of negative active voxels = " << min.mCounter << std::endl; + /// + /// @endcode + template + void reduce(LeafOp& op, bool threaded = true, size_t grainSize=1) + { + LeafReducer transform(op); + transform.run(this->leafRange(grainSize), threaded); + } + + + /// @brief Insert pointers to nodes of the specified type into the array. + /// @details The type of node pointer is defined by the type + /// ArrayT::value_type. If the node type is a LeafNode the nodes + /// are inserted from this LeafManager, else of the corresponding tree. + template + void getNodes(ArrayT& array) + { + using T = typename ArrayT::value_type; + static_assert(std::is_pointer::value, "argument to getNodes() must be a pointer array"); + using LeafT = typename std::conditional::type>::value, const LeafType, LeafType>::type; + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.resize(mLeafCount); + for (size_t i=0; i(mLeafs[i]); + } else { + mTree->getNodes(array); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + /// @brief Insert node pointers of the specified type into the array. + /// @details The type of node pointer is defined by the type + /// ArrayT::value_type. If the node type is a LeafNode the nodes + /// are inserted from this LeafManager, else of the corresponding tree. + template + void getNodes(ArrayT& array) const + { + using T = typename ArrayT::value_type; + static_assert(std::is_pointer::value, "argument to getNodes() must be a pointer array"); + static_assert(std::is_const::type>::value, + "argument to getNodes() must be an array of const node pointers"); + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.resize(mLeafCount); + for (size_t i=0; i(mLeafs[i]); + } else { + mTree->getNodes(array); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + /// @brief Generate a linear array of prefix sums of offsets into the + /// active voxels in the leafs. So @a offsets[n]+m is the offset to the + /// mth active voxel in the nth leaf node (useful for + /// user-managed value buffers, e.g. in tools/LevelSetAdvect.h). + /// @return The total number of active values in the leaf nodes + /// @param offsets array of prefix sums of offsets to active voxels + /// @param size on input, the size of @a offsets; on output, its new size + /// @param grainSize optional grain size for threading + /// @details If @a offsets is @c nullptr or @a size is smaller than the + /// total number of active voxels (the return value) then @a offsets + /// is reallocated and @a size equals the total number of active voxels. + size_t getPrefixSum(size_t*& offsets, size_t& size, size_t grainSize=1) const + { + if (offsets == nullptr || size < mLeafCount) { + delete [] offsets; + offsets = new size_t[mLeafCount]; + size = mLeafCount; + } + size_t prefix = 0; + if ( grainSize > 0 ) { + PrefixSum tmp(this->leafRange( grainSize ), offsets, prefix); + } else {// serial + for (size_t i=0; ionVoxelCount(); + } + } + return prefix; + } + + //////////////////////////////////////////////////////////////////////////////////// + // All methods below are for internal use only and should never be called directly + + /// Used internally by tbb::parallel_for() - never call it directly! + void operator()(const RangeType& r) const + { + if (mTask) mTask(const_cast(this), r); + else OPENVDB_THROW(ValueError, "task is undefined"); + } + +private: + + // This a simple wrapper for a c-style array so it mimics the api + // of a std container, e.g. std::vector or std::deque, and can be + // passed to Tree::getNodes(). + struct MyArray { + using value_type = LeafType*;//required by Tree::getNodes + value_type* ptr; + MyArray(value_type* array) : ptr(array) {} + void push_back(value_type leaf) { *ptr++ = leaf; }//required by Tree::getNodes + }; + + void initLeafArray() + { + const size_t leafCount = mTree->leafCount(); + if (leafCount != mLeafCount) { + delete [] mLeafs; + mLeafs = (leafCount == 0) ? nullptr : new LeafType*[leafCount]; + mLeafCount = leafCount; + } + MyArray a(mLeafs); + mTree->getNodes(a); + } + + void initAuxBuffers(bool serial) + { + const size_t auxBufferCount = mLeafCount * mAuxBuffersPerLeaf; + if (auxBufferCount != mAuxBufferCount) { + delete [] mAuxBuffers; + mAuxBuffers = (auxBufferCount == 0) ? nullptr : new NonConstBufferType[auxBufferCount]; + mAuxBufferCount = auxBufferCount; + } + this->syncAllBuffers(serial); + } + + void cook(size_t grainsize) + { + if (grainsize>0) { + tbb::parallel_for(this->getRange(grainsize), *this); + } else { + (*this)(this->getRange()); + } + } + + void doSwapLeafBuffer(const RangeType& r, size_t auxBufferIdx) + { + LeafManagerImpl::doSwapLeafBuffer( + r, auxBufferIdx, mLeafs, mAuxBuffers, mAuxBuffersPerLeaf); + } + + void doSwapAuxBuffer(const RangeType& r, size_t auxBufferIdx1, size_t auxBufferIdx2) + { + for (size_t N = mAuxBuffersPerLeaf, n = N*r.begin(), m = N*r.end(); n != m; n+=N) { + mAuxBuffers[n + auxBufferIdx1].swap(mAuxBuffers[n + auxBufferIdx2]); + } + } + + void doSyncAuxBuffer(const RangeType& r, size_t auxBufferIdx) + { + for (size_t n = r.begin(), m = r.end(), N = mAuxBuffersPerLeaf; n != m; ++n) { + mAuxBuffers[n*N + auxBufferIdx] = mLeafs[n]->buffer(); + } + } + + void doSyncAllBuffers1(const RangeType& r) + { + for (size_t n = r.begin(), m = r.end(); n != m; ++n) { + mAuxBuffers[n] = mLeafs[n]->buffer(); + } + } + + void doSyncAllBuffers2(const RangeType& r) + { + for (size_t n = r.begin(), m = r.end(); n != m; ++n) { + const BufferType& leafBuffer = mLeafs[n]->buffer(); + mAuxBuffers[2*n ] = leafBuffer; + mAuxBuffers[2*n+1] = leafBuffer; + } + } + + void doSyncAllBuffersN(const RangeType& r) + { + for (size_t n = r.begin(), m = r.end(), N = mAuxBuffersPerLeaf; n != m; ++n) { + const BufferType& leafBuffer = mLeafs[n]->buffer(); + for (size_t i=n*N, j=i+N; i!=j; ++i) mAuxBuffers[i] = leafBuffer; + } + } + + /// @brief Private member class that applies a user-defined + /// functor to perform parallel_for on all the leaf nodes. + template + struct LeafTransformer + { + LeafTransformer(const LeafOp &leafOp) : mLeafOp(leafOp) + { + } + void run(const LeafRange &range, bool threaded) const + { + threaded ? tbb::parallel_for(range, *this) : (*this)(range); + } + void operator()(const LeafRange &range) const + { + for (typename LeafRange::Iterator it = range.begin(); it; ++it) mLeafOp(*it, it.pos()); + } + const LeafOp mLeafOp; + };// LeafTransformer + + /// @brief Private member class that applies a user-defined + /// functor to perform parallel_reduce on all the leaf nodes. + template + struct LeafReducer + { + LeafReducer(LeafOp &leafOp) : mLeafOp(&leafOp), mOwnsOp(false) + { + } + LeafReducer(const LeafReducer &other, tbb::split) + : mLeafOp(new LeafOp(*(other.mLeafOp), tbb::split())), mOwnsOp(true) + { + } + ~LeafReducer() { if (mOwnsOp) delete mLeafOp; } + void run(const LeafRange& range, bool threaded) + { + threaded ? tbb::parallel_reduce(range, *this) : (*this)(range); + } + void operator()(const LeafRange& range) + { + LeafOp &op = *mLeafOp;//local registry + for (typename LeafRange::Iterator it = range.begin(); it; ++it) op(*it, it.pos()); + } + void join(const LeafReducer& other) { mLeafOp->join(*(other.mLeafOp)); } + LeafOp *mLeafOp; + const bool mOwnsOp; + };// LeafReducer + + // Helper class to compute a prefix sum of offsets to active voxels + struct PrefixSum + { + PrefixSum(const LeafRange& r, size_t* offsets, size_t& prefix) + : mOffsets(offsets) + { + tbb::parallel_for( r, *this); + for (size_t i=0, leafCount = r.size(); ionVoxelCount(); + } + } + size_t* mOffsets; + };// PrefixSum + + using FuncType = typename std::function; + + TreeType* mTree; + size_t mLeafCount, mAuxBufferCount, mAuxBuffersPerLeaf; + LeafType** mLeafs;//array of LeafNode pointers + NonConstBufferType* mAuxBuffers;//array of auxiliary buffers + FuncType mTask; + const bool mIsMaster; +};//end of LeafManager class + + +// Partial specializations of LeafManager methods for const trees +template +struct LeafManagerImpl > +{ + using ManagerT = LeafManager; + using RangeT = typename ManagerT::RangeType; + using LeafT = typename ManagerT::LeafType; + using BufT = typename ManagerT::BufferType; + + static inline void doSwapLeafBuffer(const RangeT&, size_t /*auxBufferIdx*/, + LeafT**, BufT*, size_t /*bufsPerLeaf*/) + { + // Buffers can't be swapped into const trees. + } +}; + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_LEAFMANAGER_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/LeafNode.h b/openvdb/tree/LeafNode.h new file mode 100644 index 00000000..d93cb23c --- /dev/null +++ b/openvdb/tree/LeafNode.h @@ -0,0 +1,1990 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TREE_LEAFNODE_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_LEAFNODE_HAS_BEEN_INCLUDED + +#include +#include +#include // for io::readData(), etc. +#include "Iterator.h" +#include "LeafBuffer.h" +#include // for std::nth_element() +#include +#include +#include +#include +#include +#include + + +class TestLeaf; +template class TestLeafIO; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +template struct SameLeafConfig; // forward declaration + + +/// @brief Templated block class to hold specific data types and a fixed +/// number of values determined by Log2Dim. The actual coordinate +/// dimension of the block is 2^Log2Dim, i.e. Log2Dim=3 corresponds to +/// a LeafNode that spans a 8^3 block. +template +class LeafNode +{ +public: + using BuildType = T; + using ValueType = T; + using Buffer = LeafBuffer; + using LeafNodeType = LeafNode; + using NodeMaskType = util::NodeMask; + using Ptr = SharedPtr; + + static const Index + LOG2DIM = Log2Dim, // needed by parent nodes + TOTAL = Log2Dim, // needed by parent nodes + DIM = 1 << TOTAL, // dimension along one coordinate direction + NUM_VALUES = 1 << 3 * Log2Dim, + NUM_VOXELS = NUM_VALUES, // total number of voxels represented by this node + SIZE = NUM_VALUES, + LEVEL = 0; // level 0 = leaf + + /// @brief ValueConverter::Type is the type of a LeafNode having the same + /// dimensions as this node but a different value type, T. + template + struct ValueConverter { using Type = LeafNode; }; + + /// @brief SameConfiguration::value is @c true if and only if + /// OtherNodeType is the type of a LeafNode with the same dimensions as this node. + template + struct SameConfiguration { + static const bool value = SameLeafConfig::value; + }; + + + /// Default constructor + LeafNode(); + + /// @brief Constructor + /// @param coords the grid index coordinates of a voxel + /// @param value a value with which to fill the buffer + /// @param active the active state to which to initialize all voxels + explicit LeafNode(const Coord& coords, + const ValueType& value = zeroVal(), + bool active = false); + + /// @brief "Partial creation" constructor used during file input + /// @param coords the grid index coordinates of a voxel + /// @param value a value with which to fill the buffer + /// @param active the active state to which to initialize all voxels + /// @details This constructor does not allocate memory for voxel values. + LeafNode(PartialCreate, + const Coord& coords, + const ValueType& value = zeroVal(), + bool active = false); + + /// Deep copy constructor + LeafNode(const LeafNode&); + + /// Deep assignment operator + LeafNode& operator=(const LeafNode&) = default; + + /// Value conversion copy constructor + template + explicit LeafNode(const LeafNode& other); + + /// Topology copy constructor + template + LeafNode(const LeafNode& other, + const ValueType& offValue, const ValueType& onValue, TopologyCopy); + + /// Topology copy constructor + template + LeafNode(const LeafNode& other, + const ValueType& background, TopologyCopy); + + /// Destructor. + ~LeafNode(); + + // + // Statistics + // + /// Return log2 of the dimension of this LeafNode, e.g. 3 if dimensions are 8^3 + static Index log2dim() { return Log2Dim; } + /// Return the number of voxels in each coordinate dimension. + static Index dim() { return DIM; } + /// Return the total number of voxels represented by this LeafNode + static Index size() { return SIZE; } + /// Return the total number of voxels represented by this LeafNode + static Index numValues() { return SIZE; } + /// Return the level of this node, which by definition is zero for LeafNodes + static Index getLevel() { return LEVEL; } + /// Append the Log2Dim of this LeafNode to the specified vector + static void getNodeLog2Dims(std::vector& dims) { dims.push_back(Log2Dim); } + /// Return the dimension of child nodes of this LeafNode, which is one for voxels. + static Index getChildDim() { return 1; } + /// Return the leaf count for this node, which is one. + static Index32 leafCount() { return 1; } + /// no-op + void nodeCount(std::vector &) const {} + /// Return the non-leaf count for this node, which is zero. + static Index32 nonLeafCount() { return 0; } + + /// Return the number of voxels marked On. + Index64 onVoxelCount() const { return mValueMask.countOn(); } + /// Return the number of voxels marked Off. + Index64 offVoxelCount() const { return mValueMask.countOff(); } + Index64 onLeafVoxelCount() const { return onVoxelCount(); } + Index64 offLeafVoxelCount() const { return offVoxelCount(); } + static Index64 onTileCount() { return 0; } + static Index64 offTileCount() { return 0; } + /// Return @c true if this node has no active voxels. + bool isEmpty() const { return mValueMask.isOff(); } + /// Return @c true if this node contains only active voxels. + bool isDense() const { return mValueMask.isOn(); } + /// Return @c true if memory for this node's buffer has been allocated. + bool isAllocated() const { return !mBuffer.isOutOfCore() && !mBuffer.empty(); } + /// Allocate memory for this node's buffer if it has not already been allocated. + bool allocate() { return mBuffer.allocate(); } + + /// Return the memory in bytes occupied by this node. + Index64 memUsage() const; + + /// Expand the given bounding box so that it includes this leaf node's active voxels. + /// If visitVoxels is false this LeafNode will be approximated as dense, i.e. with all + /// voxels active. Else the individual active voxels are visited to produce a tight bbox. + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// @brief Return the bounding box of this node, i.e., the full index space + /// spanned by this leaf node. + CoordBBox getNodeBoundingBox() const { return CoordBBox::createCube(mOrigin, DIM); } + + /// Set the grid index coordinates of this node's local origin. + void setOrigin(const Coord& origin) { mOrigin = origin; } + //@{ + /// Return the grid index coordinates of this node's local origin. + const Coord& origin() const { return mOrigin; } + void getOrigin(Coord& origin) const { origin = mOrigin; } + void getOrigin(Int32& x, Int32& y, Int32& z) const { mOrigin.asXYZ(x, y, z); } + //@} + + /// Return the linear table offset of the given global or local coordinates. + static Index coordToOffset(const Coord& xyz); + /// @brief Return the local coordinates for a linear table offset, + /// where offset 0 has coordinates (0, 0, 0). + static Coord offsetToLocalCoord(Index n); + /// Return the global coordinates for a linear table offset. + Coord offsetToGlobalCoord(Index n) const; + + /// Return a string representation of this node. + std::string str() const; + + /// @brief Return @c true if the given node (which may have a different @c ValueType + /// than this node) has the same active value topology as this node. + template + bool hasSameTopology(const LeafNode* other) const; + + /// Check for buffer, state and origin equivalence. + bool operator==(const LeafNode& other) const; + bool operator!=(const LeafNode& other) const { return !(other == *this); } + +protected: + using MaskOnIterator = typename NodeMaskType::OnIterator; + using MaskOffIterator = typename NodeMaskType::OffIterator; + using MaskDenseIterator = typename NodeMaskType::DenseIterator; + + // Type tags to disambiguate template instantiations + struct ValueOn {}; struct ValueOff {}; struct ValueAll {}; + struct ChildOn {}; struct ChildOff {}; struct ChildAll {}; + + template + struct ValueIter: + // Derives from SparseIteratorBase, but can also be used as a dense iterator, + // if MaskIterT is a dense mask iterator type. + public SparseIteratorBase< + MaskIterT, ValueIter, NodeT, ValueT> + { + using BaseT = SparseIteratorBase; + + ValueIter() {} + ValueIter(const MaskIterT& iter, NodeT* parent): BaseT(iter, parent) {} + + ValueT& getItem(Index pos) const { return this->parent().getValue(pos); } + ValueT& getValue() const { return this->parent().getValue(this->pos()); } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, const ValueT& value) const + { + this->parent().setValueOnly(pos, value); + } + // Note: setValue() can't be called on const iterators. + void setValue(const ValueT& value) const + { + this->parent().setValueOnly(this->pos(), value); + } + + // Note: modifyItem() can't be called on const iterators. + template + void modifyItem(Index n, const ModifyOp& op) const { this->parent().modifyValue(n, op); } + // Note: modifyValue() can't be called on const iterators. + template + void modifyValue(const ModifyOp& op) const { this->parent().modifyValue(this->pos(), op); } + }; + + /// Leaf nodes have no children, so their child iterators have no get/set accessors. + template + struct ChildIter: + public SparseIteratorBase, NodeT, ValueType> + { + ChildIter() {} + ChildIter(const MaskIterT& iter, NodeT* parent): SparseIteratorBase< + MaskIterT, ChildIter, NodeT, ValueType>(iter, parent) {} + }; + + template + struct DenseIter: public DenseIteratorBase< + MaskDenseIterator, DenseIter, NodeT, /*ChildT=*/void, ValueT> + { + using BaseT = DenseIteratorBase; + using NonConstValueT = typename BaseT::NonConstValueType; + + DenseIter() {} + DenseIter(const MaskDenseIterator& iter, NodeT* parent): BaseT(iter, parent) {} + + bool getItem(Index pos, void*& child, NonConstValueT& value) const + { + value = this->parent().getValue(pos); + child = nullptr; + return false; // no child + } + + // Note: setItem() can't be called on const iterators. + //void setItem(Index pos, void* child) const {} + + // Note: unsetItem() can't be called on const iterators. + void unsetItem(Index pos, const ValueT& value) const + { + this->parent().setValueOnly(pos, value); + } + }; + +public: + using ValueOnIter = ValueIter; + using ValueOnCIter = ValueIter; + using ValueOffIter = ValueIter; + using ValueOffCIter = ValueIter; + using ValueAllIter = ValueIter; + using ValueAllCIter = ValueIter; + using ChildOnIter = ChildIter; + using ChildOnCIter = ChildIter; + using ChildOffIter = ChildIter; + using ChildOffCIter = ChildIter; + using ChildAllIter = DenseIter; + using ChildAllCIter = DenseIter; + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(mValueMask.beginOn(), this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(mValueMask.beginOn(), this); } + ValueOnIter beginValueOn() { return ValueOnIter(mValueMask.beginOn(), this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(mValueMask.beginOff(), this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(mValueMask.beginOff(), this); } + ValueOffIter beginValueOff() { return ValueOffIter(mValueMask.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(mValueMask.beginDense(), this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(mValueMask.beginDense(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(mValueMask.beginDense(), this); } + + ValueOnCIter cendValueOn() const { return ValueOnCIter(mValueMask.endOn(), this); } + ValueOnCIter endValueOn() const { return ValueOnCIter(mValueMask.endOn(), this); } + ValueOnIter endValueOn() { return ValueOnIter(mValueMask.endOn(), this); } + ValueOffCIter cendValueOff() const { return ValueOffCIter(mValueMask.endOff(), this); } + ValueOffCIter endValueOff() const { return ValueOffCIter(mValueMask.endOff(), this); } + ValueOffIter endValueOff() { return ValueOffIter(mValueMask.endOff(), this); } + ValueAllCIter cendValueAll() const { return ValueAllCIter(mValueMask.endDense(), this); } + ValueAllCIter endValueAll() const { return ValueAllCIter(mValueMask.endDense(), this); } + ValueAllIter endValueAll() { return ValueAllIter(mValueMask.endDense(), this); } + + // Note that [c]beginChildOn() and [c]beginChildOff() actually return end iterators, + // because leaf nodes have no children. + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnCIter beginChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(mValueMask.endOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffCIter beginChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(mValueMask.endOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(mValueMask.beginDense(), this); } + ChildAllCIter beginChildAll() const { return ChildAllCIter(mValueMask.beginDense(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(mValueMask.beginDense(), this); } + + ChildOnCIter cendChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnCIter endChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnIter endChildOn() { return ChildOnIter(mValueMask.endOn(), this); } + ChildOffCIter cendChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffCIter endChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffIter endChildOff() { return ChildOffIter(mValueMask.endOff(), this); } + ChildAllCIter cendChildAll() const { return ChildAllCIter(mValueMask.endDense(), this); } + ChildAllCIter endChildAll() const { return ChildAllCIter(mValueMask.endDense(), this); } + ChildAllIter endChildAll() { return ChildAllIter(mValueMask.endDense(), this); } + + // + // Buffer management + // + /// @brief Exchange this node's data buffer with the given data buffer + /// without changing the active states of the values. + void swap(Buffer& other) { mBuffer.swap(other); } + const Buffer& buffer() const { return mBuffer; } + Buffer& buffer() { return mBuffer; } + + // + // I/O methods + // + /// @brief Read in just the topology. + /// @param is the stream from which to read + /// @param fromHalf if true, floating-point input values are assumed to be 16-bit + void readTopology(std::istream& is, bool fromHalf = false); + /// @brief Write out just the topology. + /// @param os the stream to which to write + /// @param toHalf if true, output floating-point values as 16-bit half floats + void writeTopology(std::ostream& os, bool toHalf = false) const; + + /// @brief Read buffers from a stream. + /// @param is the stream from which to read + /// @param fromHalf if true, floating-point input values are assumed to be 16-bit + void readBuffers(std::istream& is, bool fromHalf = false); + /// @brief Read buffers that intersect the given bounding box. + /// @param is the stream from which to read + /// @param bbox an index-space bounding box + /// @param fromHalf if true, floating-point input values are assumed to be 16-bit + void readBuffers(std::istream& is, const CoordBBox& bbox, bool fromHalf = false); + /// @brief Write buffers to a stream. + /// @param os the stream to which to write + /// @param toHalf if true, output floating-point values as 16-bit half floats + void writeBuffers(std::ostream& os, bool toHalf = false) const; + + size_t streamingSize(bool toHalf = false) const; + + // + // Accessor methods + // + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const; + /// Return the value of the voxel at the given linear offset. + const ValueType& getValue(Index offset) const; + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @param xyz the coordinates of the voxel to be probed + /// @param[out] val the value of the voxel at the given coordinates + bool probeValue(const Coord& xyz, ValueType& val) const; + /// @brief Return @c true if the voxel at the given offset is active. + /// @param offset the linear offset of the voxel to be probed + /// @param[out] val the value of the voxel at the given coordinates + bool probeValue(Index offset, ValueType& val) const; + + /// Return the level (i.e., 0) at which leaf node values reside. + static Index getValueLevel(const Coord&) { return LEVEL; } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the active state of the voxel at the given offset but don't change its value. + void setActiveState(Index offset, bool on) { assert(offsetsetValueOn(LeafNode::coordToOffset(xyz), val); + } + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& val) { this->setValueOn(xyz, val); } + /// Set the value of the voxel at the given offset and mark the voxel as active. + void setValueOn(Index offset, const ValueType& val) { + mBuffer.setValue(offset, val); + mValueMask.setOn(offset); + } + + /// @brief Apply a functor to the value of the voxel at the given offset + /// and mark the voxel as active. + template + void modifyValue(Index offset, const ModifyOp& op) + { + mBuffer.loadValues(); + if (!mBuffer.empty()) { + // in-place modify value + ValueType& val = const_cast(mBuffer[offset]); + op(val); + mValueMask.setOn(offset); + } + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + this->modifyValue(this->coordToOffset(xyz), op); + } + + /// Apply a functor to the voxel at the given coordinates. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + mBuffer.loadValues(); + if (!mBuffer.empty()) { + const Index offset = this->coordToOffset(xyz); + bool state = mValueMask.isOn(offset); + // in-place modify value + ValueType& val = const_cast(mBuffer[offset]); + op(val, state); + mValueMask.set(offset, state); + } + } + + /// Mark all voxels as active but don't change their values. + void setValuesOn() { mValueMask.setOn(); } + /// Mark all voxels as inactive but don't change their values. + void setValuesOff() { mValueMask.setOff(); } + + /// Return @c true if the voxel at the given coordinates is active. + bool isValueOn(const Coord& xyz) const {return this->isValueOn(LeafNode::coordToOffset(xyz));} + /// Return @c true if the voxel at the given offset is active. + bool isValueOn(Index offset) const { return mValueMask.isOn(offset); } + + /// Return @c false since leaf nodes never contain tiles. + static bool hasActiveTiles() { return false; } + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&, const ValueType& background); + + /// Set all voxels within an axis-aligned box to the specified value and active state. + void fill(const CoordBBox& bbox, const ValueType&, bool active = true); + /// Set all voxels within an axis-aligned box to the specified value and active state. + void denseFill(const CoordBBox& bbox, const ValueType& value, bool active = true) + { + this->fill(bbox, value, active); + } + + /// Set all voxels to the specified value but don't change their active states. + void fill(const ValueType& value); + /// Set all voxels to the specified value and active state. + void fill(const ValueType& value, bool active); + + /// @brief Copy into a dense grid the values of the voxels that lie within + /// a given bounding box. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into the dense grid + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyToDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyToDense(const CoordBBox& bbox, DenseT& dense) const; + + /// @brief Copy from a dense grid into this node the values of the voxels + /// that lie within a given bounding box. + /// @details Only values that are different (by more than the given tolerance) + /// from the background value will be active. Other values are inactive + /// and truncated to the background value. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into this node + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// @param background background value of the tree that this node belongs to + /// @param tolerance tolerance within which a value equals the background value + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyFromDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyFromDense(const CoordBBox& bbox, const DenseT& dense, + const ValueType& background, const ValueType& tolerance); + + /// @brief Return the value of the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + const ValueType& getValueAndCache(const Coord& xyz, AccessorT&) const + { + return this->getValue(xyz); + } + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @note Used internally by ValueAccessor. + template + bool isValueOnAndCache(const Coord& xyz, AccessorT&) const { return this->isValueOn(xyz); } + + /// @brief Change the value of the voxel at the given coordinates and mark it as active. + /// @note Used internally by ValueAccessor. + template + void setValueAndCache(const Coord& xyz, const ValueType& val, AccessorT&) + { + this->setValueOn(xyz, val); + } + + /// @brief Change the value of the voxel at the given coordinates + /// but preserve its state. + /// @note Used internally by ValueAccessor. + template + void setValueOnlyAndCache(const Coord& xyz, const ValueType& val, AccessorT&) + { + this->setValueOnly(xyz, val); + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValue(xyz, op); + } + + /// Apply a functor to the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndActiveStateAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValueAndActiveState(xyz, op); + } + + /// @brief Change the value of the voxel at the given coordinates and mark it as inactive. + /// @note Used internally by ValueAccessor. + template + void setValueOffAndCache(const Coord& xyz, const ValueType& value, AccessorT&) + { + this->setValueOff(xyz, value); + } + + /// @brief Set the active state of the voxel at the given coordinates + /// without changing its value. + /// @note Used internally by ValueAccessor. + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT&) + { + this->setActiveState(xyz, on); + } + + /// @brief Return @c true if the voxel at the given coordinates is active + /// and return the voxel value in @a val. + /// @note Used internally by ValueAccessor. + template + bool probeValueAndCache(const Coord& xyz, ValueType& val, AccessorT&) const + { + return this->probeValue(xyz, val); + } + + /// @brief Return the value of the voxel at the given coordinates and return + /// its active state and level (i.e., 0) in @a state and @a level. + /// @note Used internally by ValueAccessor. + template + const ValueType& getValue(const Coord& xyz, bool& state, int& level, AccessorT&) const + { + const Index offset = this->coordToOffset(xyz); + state = mValueMask.isOn(offset); + level = LEVEL; + return mBuffer[offset]; + } + + /// @brief Return the LEVEL (=0) at which leaf node values reside. + /// @note Used internally by ValueAccessor (note last argument is a dummy). + template + static Index getValueLevelAndCache(const Coord&, AccessorT&) { return LEVEL; } + + /// @brief Return a const reference to the first value in the buffer. + /// @note Though it is potentially risky you can convert this + /// to a non-const pointer by means of const_case&. + const ValueType& getFirstValue() const { return mBuffer[0]; } + /// Return a const reference to the last value in the buffer. + const ValueType& getLastValue() const { return mBuffer[SIZE - 1]; } + + /// @brief Replace inactive occurrences of @a oldBackground with @a newBackground, + /// and inactive occurrences of @a -oldBackground with @a -newBackground. + void resetBackground(const ValueType& oldBackground, const ValueType& newBackground); + + void negate(); + + /// @brief No-op + /// @details This function exists only to enable template instantiation. + void voxelizeActiveTiles(bool = true) {} + + template void merge(const LeafNode&); + template void merge(const ValueType& tileValue, bool tileActive); + template + void merge(const LeafNode& other, const ValueType& /*bg*/, const ValueType& /*otherBG*/); + + /// @brief Union this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active if either of the original voxels + /// were active. + /// + /// @note This operation modifies only active states, not values. + template + void topologyUnion(const LeafNode& other); + + /// @brief Intersect this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if both of the original voxels + /// were active. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyIntersection. + /// + /// @note This operation modifies only active states, not + /// values. Also note that this operation can result in all voxels + /// being inactive so consider subsequnetly calling prune. + template + void topologyIntersection(const LeafNode& other, const ValueType&); + + /// @brief Difference this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this LeafNode and inactive in the other LeafNode. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyDifference. + /// + /// @note This operation modifies only active states, not values. + /// Also, because it can deactivate all of this node's voxels, + /// consider subsequently calling prune. + template + void topologyDifference(const LeafNode& other, const ValueType&); + + template + void combine(const LeafNode& other, CombineOp& op); + template + void combine(const ValueType& value, bool valueIsActive, CombineOp& op); + + template + void combine2(const LeafNode& other, const OtherType&, bool valueIsActive, CombineOp&); + template + void combine2(const ValueType&, const OtherNodeT& other, bool valueIsActive, CombineOp&); + template + void combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp&); + + /// @brief Calls the templated functor BBoxOp with bounding box + /// information. An additional level argument is provided to the + /// callback. + /// + /// @note The bounding boxes are guarenteed to be non-overlapping. + template void visitActiveBBox(BBoxOp&) const; + + template void visit(VisitorOp&); + template void visit(VisitorOp&) const; + + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&); + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&) const; + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false); + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false) const; + + //@{ + /// This function exists only to enable template instantiation. + void prune(const ValueType& /*tolerance*/ = zeroVal()) {} + void addLeaf(LeafNode*) {} + template + void addLeafAndCache(LeafNode*, AccessorT&) {} + template + NodeT* stealNode(const Coord&, const ValueType&, bool) { return nullptr; } + template + NodeT* probeNode(const Coord&) { return nullptr; } + template + const NodeT* probeConstNode(const Coord&) const { return nullptr; } + template void getNodes(ArrayT&) const {} + template void stealNodes(ArrayT&, const ValueType&, bool) {} + //@} + + void addTile(Index level, const Coord&, const ValueType&, bool); + void addTile(Index offset, const ValueType&, bool); + template + void addTileAndCache(Index, const Coord&, const ValueType&, bool, AccessorT&); + + //@{ + /// @brief Return a pointer to this node. + LeafNode* touchLeaf(const Coord&) { return this; } + template + LeafNode* touchLeafAndCache(const Coord&, AccessorT&) { return this; } + template + NodeT* probeNodeAndCache(const Coord&, AccessorT&) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + LeafNode* probeLeaf(const Coord&) { return this; } + template + LeafNode* probeLeafAndCache(const Coord&, AccessorT&) { return this; } + //@} + //@{ + /// @brief Return a @const pointer to this node. + const LeafNode* probeConstLeaf(const Coord&) const { return this; } + template + const LeafNode* probeConstLeafAndCache(const Coord&, AccessorT&) const { return this; } + template + const LeafNode* probeLeafAndCache(const Coord&, AccessorT&) const { return this; } + const LeafNode* probeLeaf(const Coord&) const { return this; } + template + const NodeT* probeConstNodeAndCache(const Coord&, AccessorT&) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + + /// Return @c true if all of this node's values have the same active state + /// and are in the range this->getFirstValue() +/- @a tolerance. + /// + /// + /// @param firstValue Is updated with the first value of this leaf node. + /// @param state Is updated with the state of all values IF method + /// returns @c true. Else the value is undefined! + /// @param tolerance The tolerance used to determine if values are + /// approximatly equal to the for value. + bool isConstant(ValueType& firstValue, bool& state, + const ValueType& tolerance = zeroVal()) const; + + /// Return @c true if all of this node's values have the same active state + /// and the range (@a maxValue - @a minValue) < @a tolerance. + /// + /// @param minValue Is updated with the minimum of all values IF method + /// returns @c true. Else the value is undefined! + /// @param maxValue Is updated with the maximum of all values IF method + /// returns @c true. Else the value is undefined! + /// @param state Is updated with the state of all values IF method + /// returns @c true. Else the value is undefined! + /// @param tolerance The tolerance used to determine if values are + /// approximatly constant. + bool isConstant(ValueType& minValue, ValueType& maxValue, + bool& state, const ValueType& tolerance = zeroVal()) const; + + + /// @brief Computes the median value of all the active AND inactive voxels in this node. + /// @return The median value of all values in this node. + /// + /// @param tmp Optional temporary storage that can hold at least NUM_VALUES values + /// Use of this temporary storage can improve performance + /// when this method is called multiple times. + /// + /// @note If tmp = this->buffer().data() then the median + /// value is computed very efficiently (in place) but + /// the voxel values in this node are re-shuffeled! + /// + /// @warning If tmp != nullptr then it is the responsibility of + /// the client code that it points to enough memory to + /// hold NUM_VALUES elements of type ValueType. + ValueType medianAll(ValueType *tmp = nullptr) const; + + /// @brief Computes the median value of all the active voxels in this node. + /// @return The number of active voxels. + /// + /// @param value If the return value is non zero @a value is updated + /// with the median value. + /// + /// @param tmp Optional temporary storage that can hold at least + /// as many values as there are active voxels in this node. + /// Use of this temporary storage can improve performance + /// when this method is called multiple times. + /// + /// @warning If tmp != nullptr then it is the responsibility of + /// the client code that it points to enough memory to + /// hold the number of active voxels of type ValueType. + Index medianOn(ValueType &value, ValueType *tmp = nullptr) const; + + /// @brief Computes the median value of all the inactive voxels in this node. + /// @return The number of inactive voxels. + /// + /// @param value If the return value is non zero @a value is updated + /// with the median value. + /// + /// @param tmp Optional temporary storage that can hold at least + /// as many values as there are inactive voxels in this node. + /// Use of this temporary storage can improve performance + /// when this method is called multiple times. + /// + /// @warning If tmp != nullptr then it is the responsibility of + /// the client code that it points to enough memory to + /// hold the number of inactive voxels of type ValueType. + Index medianOff(ValueType &value, ValueType *tmp = nullptr) const; + + /// Return @c true if all of this node's values are inactive. + bool isInactive() const { return mValueMask.isOff(); } + +protected: + friend class ::TestLeaf; + template friend class ::TestLeafIO; + + // During topology-only construction, access is needed + // to protected/private members of other template instances. + template friend class LeafNode; + + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + + // Allow iterators to call mask accessor methods (see below). + /// @todo Make mask accessors public? + friend class IteratorBase; + friend class IteratorBase; + friend class IteratorBase; + + // Mask accessors +public: + bool isValueMaskOn(Index n) const { return mValueMask.isOn(n); } + bool isValueMaskOn() const { return mValueMask.isOn(); } + bool isValueMaskOff(Index n) const { return mValueMask.isOff(n); } + bool isValueMaskOff() const { return mValueMask.isOff(); } + const NodeMaskType& getValueMask() const { return mValueMask; } + NodeMaskType& getValueMask() { return mValueMask; } + const NodeMaskType& valueMask() const { return mValueMask; } + void setValueMask(const NodeMaskType& mask) { mValueMask = mask; } + bool isChildMaskOn(Index) const { return false; } // leaf nodes have no children + bool isChildMaskOff(Index) const { return true; } + bool isChildMaskOff() const { return true; } +protected: + void setValueMask(Index n, bool on) { mValueMask.set(n, on); } + void setValueMaskOn(Index n) { mValueMask.setOn(n); } + void setValueMaskOff(Index n) { mValueMask.setOff(n); } + + inline void skipCompressedValues(bool seekable, std::istream&, bool fromHalf); + + /// Compute the origin of the leaf node that contains the voxel with the given coordinates. + static void evalNodeOrigin(Coord& xyz) { xyz &= ~(DIM - 1); } + + template + static inline void doVisit(NodeT&, VisitorOp&); + + template + static inline void doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp&); + + template + static inline void doVisit2(NodeT& self, OtherChildAllIterT&, VisitorOp&, bool otherIsLHS); + +private: + /// Buffer containing the actual data values + Buffer mBuffer; + /// Bitmask that determines which voxels are active + NodeMaskType mValueMask; + /// Global grid index coordinates (x,y,z) of the local origin of this node + Coord mOrigin; +}; // end of LeafNode class + + +//////////////////////////////////////// + + +//@{ +/// Helper metafunction used to implement LeafNode::SameConfiguration +/// (which, as an inner class, can't be independently specialized) +template +struct SameLeafConfig { static const bool value = false; }; + +template +struct SameLeafConfig > { static const bool value = true; }; +//@} + + +//////////////////////////////////////// + + +template +inline +LeafNode::LeafNode(): + mValueMask(),//default is off! + mOrigin(0, 0, 0) +{ +} + + +template +inline +LeafNode::LeafNode(const Coord& xyz, const ValueType& val, bool active): + mBuffer(val), + mValueMask(active), + mOrigin(xyz & (~(DIM - 1))) +{ +} + + +template +inline +LeafNode::LeafNode(PartialCreate, const Coord& xyz, const ValueType& val, bool active): + mBuffer(PartialCreate(), val), + mValueMask(active), + mOrigin(xyz & (~(DIM - 1))) +{ +} + + +template +inline +LeafNode::LeafNode(const LeafNode& other): + mBuffer(other.mBuffer), + mValueMask(other.valueMask()), + mOrigin(other.mOrigin) +{ +} + + +// Copy-construct from a leaf node with the same configuration but a different ValueType. +template +template +inline +LeafNode::LeafNode(const LeafNode& other): + mValueMask(other.valueMask()), + mOrigin(other.mOrigin) +{ + struct Local { + /// @todo Consider using a value conversion functor passed as an argument instead. + static inline ValueType convertValue(const OtherValueType& val) { return ValueType(val); } + }; + + for (Index i = 0; i < SIZE; ++i) { + mBuffer[i] = Local::convertValue(other.mBuffer[i]); + } +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + const ValueType& background, TopologyCopy): + mBuffer(background), + mValueMask(other.valueMask()), + mOrigin(other.mOrigin) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + const ValueType& offValue, const ValueType& onValue, TopologyCopy): + mValueMask(other.valueMask()), + mOrigin(other.mOrigin) +{ + for (Index i = 0; i < SIZE; ++i) { + mBuffer[i] = (mValueMask.isOn(i) ? onValue : offValue); + } +} + + +template +inline +LeafNode::~LeafNode() +{ +} + + +template +inline std::string +LeafNode::str() const +{ + std::ostringstream ostr; + ostr << "LeafNode @" << mOrigin << ": " << mBuffer; + return ostr.str(); +} + + +//////////////////////////////////////// + + +template +inline Index +LeafNode::coordToOffset(const Coord& xyz) +{ + assert ((xyz[0] & (DIM-1u)) < DIM && (xyz[1] & (DIM-1u)) < DIM && (xyz[2] & (DIM-1u)) < DIM); + return ((xyz[0] & (DIM-1u)) << 2*Log2Dim) + + ((xyz[1] & (DIM-1u)) << Log2Dim) + + (xyz[2] & (DIM-1u)); +} + +template +inline Coord +LeafNode::offsetToLocalCoord(Index n) +{ + assert(n<(1<< 3*Log2Dim)); + Coord xyz; + xyz.setX(n >> 2*Log2Dim); + n &= ((1<<2*Log2Dim)-1); + xyz.setY(n >> Log2Dim); + xyz.setZ(n & ((1< +inline Coord +LeafNode::offsetToGlobalCoord(Index n) const +{ + return (this->offsetToLocalCoord(n) + this->origin()); +} + + +//////////////////////////////////////// + + +template +inline const ValueT& +LeafNode::getValue(const Coord& xyz) const +{ + return this->getValue(LeafNode::coordToOffset(xyz)); +} + +template +inline const ValueT& +LeafNode::getValue(Index offset) const +{ + assert(offset < SIZE); + return mBuffer[offset]; +} + + +template +inline bool +LeafNode::probeValue(const Coord& xyz, ValueType& val) const +{ + return this->probeValue(LeafNode::coordToOffset(xyz), val); +} + +template +inline bool +LeafNode::probeValue(Index offset, ValueType& val) const +{ + assert(offset < SIZE); + val = mBuffer[offset]; + return mValueMask.isOn(offset); +} + + +template +inline void +LeafNode::setValueOff(const Coord& xyz, const ValueType& val) +{ + this->setValueOff(LeafNode::coordToOffset(xyz), val); +} + +template +inline void +LeafNode::setValueOff(Index offset, const ValueType& val) +{ + assert(offset < SIZE); + mBuffer.setValue(offset, val); + mValueMask.setOff(offset); +} + + +template +inline void +LeafNode::setActiveState(const Coord& xyz, bool on) +{ + mValueMask.set(this->coordToOffset(xyz), on); +} + + +template +inline void +LeafNode::setValueOnly(const Coord& xyz, const ValueType& val) +{ + this->setValueOnly(LeafNode::coordToOffset(xyz), val); +} + +template +inline void +LeafNode::setValueOnly(Index offset, const ValueType& val) +{ + assert(offset +inline void +LeafNode::clip(const CoordBBox& clipBBox, const T& background) +{ + CoordBBox nodeBBox = this->getNodeBoundingBox(); + if (!clipBBox.hasOverlap(nodeBBox)) { + // This node lies completely outside the clipping region. Fill it with the background. + this->fill(background, /*active=*/false); + } else if (clipBBox.isInside(nodeBBox)) { + // This node lies completely inside the clipping region. Leave it intact. + return; + } + + // This node isn't completely contained inside the clipping region. + // Set any voxels that lie outside the region to the background value. + + // Construct a boolean mask that is on inside the clipping region and off outside it. + NodeMaskType mask; + nodeBBox.intersect(clipBBox); + Coord xyz; + int &x = xyz.x(), &y = xyz.y(), &z = xyz.z(); + for (x = nodeBBox.min().x(); x <= nodeBBox.max().x(); ++x) { + for (y = nodeBBox.min().y(); y <= nodeBBox.max().y(); ++y) { + for (z = nodeBBox.min().z(); z <= nodeBBox.max().z(); ++z) { + mask.setOn(static_cast(this->coordToOffset(xyz))); + } + } + } + + // Set voxels that lie in the inactive region of the mask (i.e., outside + // the clipping region) to the background value. + for (MaskOffIterator maskIter = mask.beginOff(); maskIter; ++maskIter) { + this->setValueOff(maskIter.pos(), background); + } +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::fill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + if (!this->allocate()) return; + + auto clippedBBox = this->getNodeBoundingBox(); + clippedBBox.intersect(bbox); + if (!clippedBBox) return; + + for (Int32 x = clippedBBox.min().x(); x <= clippedBBox.max().x(); ++x) { + const Index offsetX = (x & (DIM-1u)) << 2*Log2Dim; + for (Int32 y = clippedBBox.min().y(); y <= clippedBBox.max().y(); ++y) { + const Index offsetXY = offsetX + ((y & (DIM-1u)) << Log2Dim); + for (Int32 z = clippedBBox.min().z(); z <= clippedBBox.max().z(); ++z) { + const Index offset = offsetXY + (z & (DIM-1u)); + mBuffer[offset] = value; + mValueMask.set(offset, active); + } + } + } +} + +template +inline void +LeafNode::fill(const ValueType& value) +{ + mBuffer.fill(value); +} + +template +inline void +LeafNode::fill(const ValueType& value, bool active) +{ + mBuffer.fill(value); + mValueMask.set(active); +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::copyToDense(const CoordBBox& bbox, DenseT& dense) const +{ + mBuffer.loadValues(); + + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + DenseValueType* t0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // target array + const T* s0 = &mBuffer[bbox.min()[2] & (DIM-1u)]; // source array + for (Int32 x = bbox.min()[0], ex = bbox.max()[0] + 1; x < ex; ++x) { + DenseValueType* t1 = t0 + xStride * (x - min[0]); + const T* s1 = s0 + ((x & (DIM-1u)) << 2*Log2Dim); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1] + 1; y < ey; ++y) { + DenseValueType* t2 = t1 + yStride * (y - min[1]); + const T* s2 = s1 + ((y & (DIM-1u)) << Log2Dim); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2] + 1; z < ez; ++z, t2 += zStride) { + *t2 = DenseValueType(*s2++); + } + } + } +} + + +template +template +inline void +LeafNode::copyFromDense(const CoordBBox& bbox, const DenseT& dense, + const ValueType& background, const ValueType& tolerance) +{ + if (!this->allocate()) return; + + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + + const DenseValueType* s0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // source + const Int32 n0 = bbox.min()[2] & (DIM-1u); + for (Int32 x = bbox.min()[0], ex = bbox.max()[0]+1; x < ex; ++x) { + const DenseValueType* s1 = s0 + xStride * (x - min[0]); + const Int32 n1 = n0 + ((x & (DIM-1u)) << 2*LOG2DIM); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1]+1; y < ey; ++y) { + const DenseValueType* s2 = s1 + yStride * (y - min[1]); + Int32 n2 = n1 + ((y & (DIM-1u)) << LOG2DIM); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2]+1; z < ez; ++z, ++n2, s2 += zStride) { + if (math::isApproxEqual(background, ValueType(*s2), tolerance)) { + mValueMask.setOff(n2); + mBuffer[n2] = background; + } else { + mValueMask.setOn(n2); + mBuffer[n2] = ValueType(*s2); + } + } + } + } +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::readTopology(std::istream& is, bool /*fromHalf*/) +{ + mValueMask.load(is); +} + + +template +inline void +LeafNode::writeTopology(std::ostream& os, bool /*toHalf*/) const +{ + mValueMask.save(os); +} + + +//////////////////////////////////////// + + + +template +inline void +LeafNode::skipCompressedValues(bool seekable, std::istream& is, bool fromHalf) +{ + if (seekable) { + // Seek over voxel values. + io::readCompressedValues( + is, nullptr, SIZE, mValueMask, fromHalf); + } else { + // Read and discard voxel values. + Buffer temp; + io::readCompressedValues(is, temp.mData, SIZE, mValueMask, fromHalf); + } +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, bool fromHalf) +{ + this->readBuffers(is, CoordBBox::inf(), fromHalf); +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, const CoordBBox& clipBBox, bool fromHalf) +{ + SharedPtr meta = io::getStreamMetadataPtr(is); + const bool seekable = meta && meta->seekable(); + + std::streamoff maskpos = is.tellg(); + + if (seekable) { + // Seek over the value mask. + mValueMask.seek(is); + } else { + // Read in the value mask. + mValueMask.load(is); + } + + int8_t numBuffers = 1; + if (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION) { + // Read in the origin. + is.read(reinterpret_cast(&mOrigin), sizeof(Coord::ValueType) * 3); + + // Read in the number of buffers, which should now always be one. + is.read(reinterpret_cast(&numBuffers), sizeof(int8_t)); + } + + CoordBBox nodeBBox = this->getNodeBoundingBox(); + if (!clipBBox.hasOverlap(nodeBBox)) { + // This node lies completely outside the clipping region. + skipCompressedValues(seekable, is, fromHalf); + mValueMask.setOff(); + mBuffer.setOutOfCore(false); + } else { + // If this node lies completely inside the clipping region and it is being read + // from a memory-mapped file, delay loading of its buffer until the buffer + // is actually accessed. (If this node requires clipping, its buffer + // must be accessed and therefore must be loaded.) + io::MappedFile::Ptr mappedFile = io::getMappedFilePtr(is); + const bool delayLoad = ((mappedFile.get() != nullptr) && clipBBox.isInside(nodeBBox)); + + if (delayLoad) { + mBuffer.setOutOfCore(true); + mBuffer.mFileInfo = new typename Buffer::FileInfo; + mBuffer.mFileInfo->meta = meta; + mBuffer.mFileInfo->bufpos = is.tellg(); + mBuffer.mFileInfo->mapping = mappedFile; + // Save the offset to the value mask, because the in-memory copy + // might change before the value buffer gets read. + mBuffer.mFileInfo->maskpos = maskpos; + // Skip over voxel values. + skipCompressedValues(seekable, is, fromHalf); + } else { + mBuffer.allocate(); + io::readCompressedValues(is, mBuffer.mData, SIZE, mValueMask, fromHalf); + mBuffer.setOutOfCore(false); + + // Get this tree's background value. + T background = zeroVal(); + if (const void* bgPtr = io::getGridBackgroundValuePtr(is)) { + background = *static_cast(bgPtr); + } + this->clip(clipBBox, background); + } + } + + if (numBuffers > 1) { + // Read in and discard auxiliary buffers that were created with earlier + // versions of the library. (Auxiliary buffers are not mask compressed.) + const bool zipped = io::getDataCompression(is) & io::COMPRESS_ZIP; + Buffer temp; + for (int i = 1; i < numBuffers; ++i) { + if (fromHalf) { + io::HalfReader::isReal, T>::read(is, temp.mData, SIZE, zipped); + } else { + io::readData(is, temp.mData, SIZE, zipped); + } + } + } + + // increment the leaf number + if (meta) meta->setLeaf(meta->leaf() + 1); +} + + +template +inline void +LeafNode::writeBuffers(std::ostream& os, bool toHalf) const +{ + // Write out the value mask. + mValueMask.save(os); + + mBuffer.loadValues(); + + io::writeCompressedValues(os, mBuffer.mData, SIZE, + mValueMask, /*childMask=*/NodeMaskType(), toHalf); +} + + +//////////////////////////////////////// + + +template +inline bool +LeafNode::operator==(const LeafNode& other) const +{ + return mOrigin == other.mOrigin && + mValueMask == other.valueMask() && + mBuffer == other.mBuffer; +} + + +template +inline Index64 +LeafNode::memUsage() const +{ + // Use sizeof(*this) to capture alignment-related padding + // (but note that sizeof(*this) includes sizeof(mBuffer)). + return sizeof(*this) + mBuffer.memUsage() - sizeof(mBuffer); +} + + +template +inline void +LeafNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + CoordBBox this_bbox = this->getNodeBoundingBox(); + if (bbox.isInside(this_bbox)) return;//this LeafNode is already enclosed in the bbox + if (ValueOnCIter iter = this->cbeginValueOn()) {//any active values? + if (visitVoxels) {//use voxel granularity? + this_bbox.reset(); + for(; iter; ++iter) this_bbox.expand(this->offsetToLocalCoord(iter.pos())); + this_bbox.translate(this->origin()); + } + bbox.expand(this_bbox); + } +} + + +template +template +inline bool +LeafNode::hasSameTopology(const LeafNode* other) const +{ + assert(other); + return (Log2Dim == OtherLog2Dim && mValueMask == other->getValueMask()); +} + +template +inline bool +LeafNode::isConstant(ValueType& firstValue, + bool& state, + const ValueType& tolerance) const +{ + if (!mValueMask.isConstant(state)) return false;// early termination + firstValue = mBuffer[0]; + for (Index i = 1; i < SIZE; ++i) { + if ( !math::isApproxEqual(mBuffer[i], firstValue, tolerance) ) return false;// early termination + } + return true; +} + +template +inline bool +LeafNode::isConstant(ValueType& minValue, + ValueType& maxValue, + bool& state, + const ValueType& tolerance) const +{ + if (!mValueMask.isConstant(state)) return false;// early termination + minValue = maxValue = mBuffer[0]; + for (Index i = 1; i < SIZE; ++i) { + const T& v = mBuffer[i]; + if (v < minValue) { + if ((maxValue - v) > tolerance) return false;// early termination + minValue = v; + } else if (v > maxValue) { + if ((v - minValue) > tolerance) return false;// early termination + maxValue = v; + } + } + return true; +} + +template +inline T +LeafNode::medianAll(T *tmp) const +{ + std::unique_ptr data(nullptr); + if (tmp == nullptr) {//allocate temporary storage + data.reset(new T[NUM_VALUES]); + tmp = data.get(); + } + if (tmp != mBuffer.data()) { + const T* src = mBuffer.data(); + for (T* dst = tmp; dst-tmp < NUM_VALUES;) *dst++ = *src++; + } + static const size_t midpoint = (NUM_VALUES - 1) >> 1; + std::nth_element(tmp, tmp + midpoint, tmp + NUM_VALUES); + return tmp[midpoint]; +} + +template +inline Index +LeafNode::medianOn(T &value, T *tmp) const +{ + const Index count = mValueMask.countOn(); + if (count == NUM_VALUES) {//special case: all voxels are active + value = this->medianAll(tmp); + return NUM_VALUES; + } else if (count == 0) { + return 0; + } + std::unique_ptr data(nullptr); + if (tmp == nullptr) {//allocate temporary storage + data.reset(new T[count]);// 0 < count < NUM_VALUES + tmp = data.get(); + } + for (auto iter=this->cbeginValueOn(); iter; ++iter) *tmp++ = *iter; + T *begin = tmp - count; + const size_t midpoint = (count - 1) >> 1; + std::nth_element(begin, begin + midpoint, tmp); + value = begin[midpoint]; + return count; +} + +template +inline Index +LeafNode::medianOff(T &value, T *tmp) const +{ + const Index count = mValueMask.countOff(); + if (count == NUM_VALUES) {//special case: all voxels are inactive + value = this->medianAll(tmp); + return NUM_VALUES; + } else if (count == 0) { + return 0; + } + std::unique_ptr data(nullptr); + if (tmp == nullptr) {//allocate temporary storage + data.reset(new T[count]);// 0 < count < NUM_VALUES + tmp = data.get(); + } + for (auto iter=this->cbeginValueOff(); iter; ++iter) *tmp++ = *iter; + T *begin = tmp - count; + const size_t midpoint = (count - 1) >> 1; + std::nth_element(begin, begin + midpoint, tmp); + value = begin[midpoint]; + return count; +} + +//////////////////////////////////////// + + +template +inline void +LeafNode::addTile(Index /*level*/, const Coord& xyz, const ValueType& val, bool active) +{ + this->addTile(this->coordToOffset(xyz), val, active); +} + +template +inline void +LeafNode::addTile(Index offset, const ValueType& val, bool active) +{ + assert(offset < SIZE); + setValueOnly(offset, val); + setActiveState(offset, active); +} + +template +template +inline void +LeafNode::addTileAndCache(Index level, const Coord& xyz, + const ValueType& val, bool active, AccessorT&) +{ + this->addTile(level, xyz, val, active); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::resetBackground(const ValueType& oldBackground, + const ValueType& newBackground) +{ + if (!this->allocate()) return; + + typename NodeMaskType::OffIterator iter; + // For all inactive values... + for (iter = this->mValueMask.beginOff(); iter; ++iter) { + ValueType &inactiveValue = mBuffer[iter.pos()]; + if (math::isApproxEqual(inactiveValue, oldBackground)) { + inactiveValue = newBackground; + } else if (math::isApproxEqual(inactiveValue, math::negative(oldBackground))) { + inactiveValue = math::negative(newBackground); + } + } +} + + +template +template +inline void +LeafNode::merge(const LeafNode& other) +{ + if (!this->allocate()) return; + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy == MERGE_NODES) return; + typename NodeMaskType::OnIterator iter = other.valueMask().beginOn(); + for (; iter; ++iter) { + const Index n = iter.pos(); + if (mValueMask.isOff(n)) { + mBuffer[n] = other.mBuffer[n]; + mValueMask.setOn(n); + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + +template +template +inline void +LeafNode::merge(const LeafNode& other, + const ValueType& /*bg*/, const ValueType& /*otherBG*/) +{ + this->template merge(other); +} + +template +template +inline void +LeafNode::merge(const ValueType& tileValue, bool tileActive) +{ + if (!this->allocate()) return; + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy != MERGE_ACTIVE_STATES_AND_NODES) return; + if (!tileActive) return; + // Replace all inactive values with the active tile value. + for (typename NodeMaskType::OffIterator iter = mValueMask.beginOff(); iter; ++iter) { + const Index n = iter.pos(); + mBuffer[n] = tileValue; + mValueMask.setOn(n); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline void +LeafNode::topologyUnion(const LeafNode& other) +{ + mValueMask |= other.valueMask(); +} + +template +template +inline void +LeafNode::topologyIntersection(const LeafNode& other, + const ValueType&) +{ + mValueMask &= other.valueMask(); +} + +template +template +inline void +LeafNode::topologyDifference(const LeafNode& other, + const ValueType&) +{ + mValueMask &= !other.valueMask(); +} + +template +inline void +LeafNode::negate() +{ + if (!this->allocate()) return; + + for (Index i = 0; i < SIZE; ++i) { + mBuffer[i] = -mBuffer[i]; + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine(const LeafNode& other, CombineOp& op) +{ + if (!this->allocate()) return; + + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + op(args.setARef(mBuffer[i]) + .setAIsActive(mValueMask.isOn(i)) + .setBRef(other.mBuffer[i]) + .setBIsActive(other.valueMask().isOn(i)) + .setResultRef(mBuffer[i])); + mValueMask.set(i, args.resultIsActive()); + } +} + + +template +template +inline void +LeafNode::combine(const ValueType& value, bool valueIsActive, CombineOp& op) +{ + if (!this->allocate()) return; + + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + op(args.setARef(mBuffer[i]) + .setAIsActive(mValueMask.isOn(i)) + .setResultRef(mBuffer[i])); + mValueMask.set(i, args.resultIsActive()); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine2(const LeafNode& other, const OtherType& value, + bool valueIsActive, CombineOp& op) +{ + if (!this->allocate()) return; + + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + op(args.setARef(other.mBuffer[i]) + .setAIsActive(other.valueMask().isOn(i)) + .setResultRef(mBuffer[i])); + mValueMask.set(i, args.resultIsActive()); + } +} + + +template +template +inline void +LeafNode::combine2(const ValueType& value, const OtherNodeT& other, + bool valueIsActive, CombineOp& op) +{ + if (!this->allocate()) return; + + CombineArgs args; + args.setARef(value).setAIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + op(args.setBRef(other.mBuffer[i]) + .setBIsActive(other.valueMask().isOn(i)) + .setResultRef(mBuffer[i])); + mValueMask.set(i, args.resultIsActive()); + } +} + + +template +template +inline void +LeafNode::combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp& op) +{ + if (!this->allocate()) return; + + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + mValueMask.set(i, b0.valueMask().isOn(i) || b1.valueMask().isOn(i)); + op(args.setARef(b0.mBuffer[i]) + .setAIsActive(b0.valueMask().isOn(i)) + .setBRef(b1.mBuffer[i]) + .setBIsActive(b1.valueMask().isOn(i)) + .setResultRef(mBuffer[i])); + mValueMask.set(i, args.resultIsActive()); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visitActiveBBox(BBoxOp& op) const +{ + if (op.template descent()) { + for (ValueOnCIter i=this->cbeginValueOn(); i; ++i) { +#ifdef _MSC_VER + op.operator()(CoordBBox::createCube(i.getCoord(), 1)); +#else + op.template operator()(CoordBBox::createCube(i.getCoord(), 1)); +#endif + } + } else { +#ifdef _MSC_VER + op.operator()(this->getNodeBoundingBox()); +#else + op.template operator()(this->getNodeBoundingBox()); +#endif + } +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) const +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::doVisit(NodeT& self, VisitorOp& op) +{ + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) +{ + doVisit2Node(*this, other, op); +} + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) const +{ + doVisit2Node(*this, other, op); +} + + +template +template< + typename NodeT, + typename OtherNodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp& op) +{ + // Allow the two nodes to have different ValueTypes, but not different dimensions. + static_assert(OtherNodeT::SIZE == NodeT::SIZE, + "can't visit nodes of different sizes simultaneously"); + static_assert(OtherNodeT::LEVEL == NodeT::LEVEL, + "can't visit nodes at different tree levels simultaneously"); + + ChildAllIterT iter = self.beginChildAll(); + OtherChildAllIterT otherIter = other.beginChildAll(); + + for ( ; iter && otherIter; ++iter, ++otherIter) { + op(iter, otherIter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) +{ + doVisit2( + *this, otherIter, op, otherIsLHS); +} + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) const +{ + doVisit2( + *this, otherIter, op, otherIsLHS); +} + + +template +template< + typename NodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2(NodeT& self, OtherChildAllIterT& otherIter, + VisitorOp& op, bool otherIsLHS) +{ + if (!otherIter) return; + + if (otherIsLHS) { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(otherIter, iter); + } + } else { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter, otherIter); + } + } +} + + +//////////////////////////////////////// + + +template +inline std::ostream& +operator<<(std::ostream& os, const typename LeafNode::Buffer& buf) +{ + for (Index32 i = 0, N = buf.size(); i < N; ++i) os << buf.mData[i] << ", "; + return os; +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +//////////////////////////////////////// + + +// Specialization for LeafNodes of type bool +#include "LeafNodeBool.h" + +// Specialization for LeafNodes with mask information only +#include "LeafNodeMask.h" + +#endif // OPENVDB_TREE_LEAFNODE_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/LeafNodeBool.h b/openvdb/tree/LeafNodeBool.h new file mode 100644 index 00000000..d155c4c9 --- /dev/null +++ b/openvdb/tree/LeafNodeBool.h @@ -0,0 +1,1733 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TREE_LEAF_NODE_BOOL_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_LEAF_NODE_BOOL_HAS_BEEN_INCLUDED + +#include +#include // for io::readData(), etc. +#include // for math::isZero() +#include +#include "LeafNode.h" +#include "Iterator.h" +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +/// @brief LeafNode specialization for values of type bool that stores both +/// the active states and the values of (2^Log2Dim)^3 voxels as bit masks +template +class LeafNode +{ +public: + using LeafNodeType = LeafNode; + using BuildType = bool; + using ValueType = bool; + using Buffer = LeafBuffer; + using NodeMaskType = util::NodeMask; + using Ptr = SharedPtr; + + // These static declarations must be on separate lines to avoid VC9 compiler errors. + static const Index LOG2DIM = Log2Dim; // needed by parent nodes + static const Index TOTAL = Log2Dim; // needed by parent nodes + static const Index DIM = 1 << TOTAL; // dimension along one coordinate direction + static const Index NUM_VALUES = 1 << 3 * Log2Dim; + static const Index NUM_VOXELS = NUM_VALUES; // total number of voxels represented by this node + static const Index SIZE = NUM_VALUES; + static const Index LEVEL = 0; // level 0 = leaf + + /// @brief ValueConverter::Type is the type of a LeafNode having the same + /// dimensions as this node but a different value type, T. + template + struct ValueConverter { using Type = LeafNode; }; + + /// @brief SameConfiguration::value is @c true if and only if + /// OtherNodeType is the type of a LeafNode with the same dimensions as this node. + template + struct SameConfiguration { + static const bool value = SameLeafConfig::value; + }; + + + /// Default constructor + LeafNode(); + + /// Constructor + /// @param xyz the coordinates of a voxel that lies within the node + /// @param value the initial value for all of this node's voxels + /// @param active the active state to which to initialize all voxels + explicit LeafNode(const Coord& xyz, bool value = false, bool active = false); + + /// "Partial creation" constructor used during file input + LeafNode(PartialCreate, const Coord& xyz, bool value = false, bool active = false); + + /// Deep copy constructor + LeafNode(const LeafNode&); + + /// Deep assignment operator + LeafNode& operator=(const LeafNode&) = default; + + /// Value conversion copy constructor + template + explicit LeafNode(const LeafNode& other); + + /// Topology copy constructor + template + LeafNode(const LeafNode& other, TopologyCopy); + + //@{ + /// @brief Topology copy constructor + /// @note This variant exists mainly to enable template instantiation. + template + LeafNode(const LeafNode& other, bool offValue, bool onValue, TopologyCopy); + template + LeafNode(const LeafNode& other, bool background, TopologyCopy); + //@} + + /// Destructor + ~LeafNode(); + + // + // Statistics + // + /// Return log2 of the size of the buffer storage. + static Index log2dim() { return Log2Dim; } + /// Return the number of voxels in each dimension. + static Index dim() { return DIM; } + static Index size() { return SIZE; } + static Index numValues() { return SIZE; } + static Index getLevel() { return LEVEL; } + static void getNodeLog2Dims(std::vector& dims) { dims.push_back(Log2Dim); } + static Index getChildDim() { return 1; } + + static Index32 leafCount() { return 1; } + /// no-op + void nodeCount(std::vector &) const {} + static Index32 nonLeafCount() { return 0; } + + /// Return the number of active voxels. + Index64 onVoxelCount() const { return mValueMask.countOn(); } + /// Return the number of inactive voxels. + Index64 offVoxelCount() const { return mValueMask.countOff(); } + Index64 onLeafVoxelCount() const { return onVoxelCount(); } + Index64 offLeafVoxelCount() const { return offVoxelCount(); } + static Index64 onTileCount() { return 0; } + static Index64 offTileCount() { return 0; } + + /// Return @c true if this node has no active voxels. + bool isEmpty() const { return mValueMask.isOff(); } + /// Return @c true if this node only contains active voxels. + bool isDense() const { return mValueMask.isOn(); } + /// @brief Return @c true if memory for this node's buffer has been allocated. + /// @details Currently, boolean leaf nodes don't support partial creation, + /// so this always returns @c true. + bool isAllocated() const { return true; } + /// @brief Allocate memory for this node's buffer if it has not already been allocated. + /// @details Currently, boolean leaf nodes don't support partial creation, + /// so this has no effect. + bool allocate() { return true; } + + /// Return the memory in bytes occupied by this node. + Index64 memUsage() const; + + /// Expand the given bounding box so that it includes this leaf node's active voxels. + /// If visitVoxels is false this LeafNode will be approximated as dense, i.e. with all + /// voxels active. Else the individual active voxels are visited to produce a tight bbox. + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// @brief Return the bounding box of this node, i.e., the full index space + /// spanned by this leaf node. + CoordBBox getNodeBoundingBox() const { return CoordBBox::createCube(mOrigin, DIM); } + + /// Set the grid index coordinates of this node's local origin. + void setOrigin(const Coord& origin) { mOrigin = origin; } + //@{ + /// Return the grid index coordinates of this node's local origin. + const Coord& origin() const { return mOrigin; } + void getOrigin(Coord& origin) const { origin = mOrigin; } + void getOrigin(Int32& x, Int32& y, Int32& z) const { mOrigin.asXYZ(x, y, z); } + //@} + + /// Return the linear table offset of the given global or local coordinates. + static Index coordToOffset(const Coord& xyz); + /// @brief Return the local coordinates for a linear table offset, + /// where offset 0 has coordinates (0, 0, 0). + static Coord offsetToLocalCoord(Index n); + /// Return the global coordinates for a linear table offset. + Coord offsetToGlobalCoord(Index n) const; + + /// Return a string representation of this node. + std::string str() const; + + /// @brief Return @c true if the given node (which may have a different @c ValueType + /// than this node) has the same active value topology as this node. + template + bool hasSameTopology(const LeafNode* other) const; + + /// Check for buffer equivalence by value. + bool operator==(const LeafNode&) const; + bool operator!=(const LeafNode&) const; + + // + // Buffer management + // + /// @brief Exchange this node's data buffer with the given data buffer + /// without changing the active states of the values. + void swap(Buffer& other) { mBuffer.swap(other); } + const Buffer& buffer() const { return mBuffer; } + Buffer& buffer() { return mBuffer; } + + // + // I/O methods + // + /// Read in just the topology. + void readTopology(std::istream&, bool fromHalf = false); + /// Write out just the topology. + void writeTopology(std::ostream&, bool toHalf = false) const; + + /// Read in the topology and the origin. + void readBuffers(std::istream&, bool fromHalf = false); + void readBuffers(std::istream& is, const CoordBBox&, bool fromHalf = false); + /// Write out the topology and the origin. + void writeBuffers(std::ostream&, bool toHalf = false) const; + + // + // Accessor methods + // + /// Return the value of the voxel at the given coordinates. + const bool& getValue(const Coord& xyz) const; + /// Return the value of the voxel at the given offset. + const bool& getValue(Index offset) const; + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @param xyz the coordinates of the voxel to be probed + /// @param[out] val the value of the voxel at the given coordinates + bool probeValue(const Coord& xyz, bool& val) const; + + /// Return the level (0) at which leaf node values reside. + static Index getValueLevel(const Coord&) { return LEVEL; } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the active state of the voxel at the given offset but don't change its value. + void setActiveState(Index offset, bool on) { assert(offsetcoordToOffset(xyz)); } + /// Mark the voxel at the given offset as inactive but don't change its value. + void setValueOff(Index offset) { assert(offset < SIZE); mValueMask.setOff(offset); } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, bool val); + /// Set the value of the voxel at the given offset and mark the voxel as inactive. + void setValueOff(Index offset, bool val); + + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz) { mValueMask.setOn(this->coordToOffset(xyz)); } + /// Mark the voxel at the given offset as active but don't change its value. + void setValueOn(Index offset) { assert(offset < SIZE); mValueMask.setOn(offset); } + + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValueOn(const Coord& xyz, bool val); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, bool val) { this->setValueOn(xyz, val); } + /// Set the value of the voxel at the given offset and mark the voxel as active. + void setValueOn(Index offset, bool val); + + /// @brief Apply a functor to the value of the voxel at the given offset + /// and mark the voxel as active. + template + void modifyValue(Index offset, const ModifyOp& op); + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + template + void modifyValue(const Coord& xyz, const ModifyOp& op); + + /// Apply a functor to the voxel at the given coordinates. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op); + + /// Mark all voxels as active but don't change their values. + void setValuesOn() { mValueMask.setOn(); } + /// Mark all voxels as inactive but don't change their values. + void setValuesOff() { mValueMask.setOff(); } + + /// Return @c true if the voxel at the given coordinates is active. + bool isValueOn(const Coord& xyz) const { return mValueMask.isOn(this->coordToOffset(xyz)); } + /// Return @c true if the voxel at the given offset is active. + bool isValueOn(Index offset) const { assert(offset < SIZE); return mValueMask.isOn(offset); } + + /// Return @c false since leaf nodes never contain tiles. + static bool hasActiveTiles() { return false; } + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&, bool background); + + /// Set all voxels within an axis-aligned box to the specified value and active state. + void fill(const CoordBBox& bbox, bool value, bool active = true); + /// Set all voxels within an axis-aligned box to the specified value and active state. + void denseFill(const CoordBBox& bbox, bool val, bool on = true) { this->fill(bbox, val, on); } + + /// Set all voxels to the specified value but don't change their active states. + void fill(const bool& value); + /// Set all voxels to the specified value and active state. + void fill(const bool& value, bool active); + + /// @brief Copy into a dense grid the values of the voxels that lie within + /// a given bounding box. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into the dense grid + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyToDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyToDense(const CoordBBox& bbox, DenseT& dense) const; + + /// @brief Copy from a dense grid into this node the values of the voxels + /// that lie within a given bounding box. + /// @details Only values that are different (by more than the given tolerance) + /// from the background value will be active. Other values are inactive + /// and truncated to the background value. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into this node + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// @param background background value of the tree that this node belongs to + /// @param tolerance tolerance within which a value equals the background value + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyFromDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyFromDense(const CoordBBox& bbox, const DenseT& dense, bool background, bool tolerance); + + /// @brief Return the value of the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + const bool& getValueAndCache(const Coord& xyz, AccessorT&) const {return this->getValue(xyz);} + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @note Used internally by ValueAccessor. + template + bool isValueOnAndCache(const Coord& xyz, AccessorT&) const { return this->isValueOn(xyz); } + + /// @brief Change the value of the voxel at the given coordinates and mark it as active. + /// @note Used internally by ValueAccessor. + template + void setValueAndCache(const Coord& xyz, bool val, AccessorT&) { this->setValueOn(xyz, val); } + + /// @brief Change the value of the voxel at the given coordinates + /// but preserve its state. + /// @note Used internally by ValueAccessor. + template + void setValueOnlyAndCache(const Coord& xyz, bool val, AccessorT&) {this->setValueOnly(xyz,val);} + + /// @brief Change the value of the voxel at the given coordinates and mark it as inactive. + /// @note Used internally by ValueAccessor. + template + void setValueOffAndCache(const Coord& xyz, bool value, AccessorT&) + { + this->setValueOff(xyz, value); + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValue(xyz, op); + } + + /// Apply a functor to the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndActiveStateAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValueAndActiveState(xyz, op); + } + + /// @brief Set the active state of the voxel at the given coordinates + /// without changing its value. + /// @note Used internally by ValueAccessor. + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT&) + { + this->setActiveState(xyz, on); + } + + /// @brief Return @c true if the voxel at the given coordinates is active + /// and return the voxel value in @a val. + /// @note Used internally by ValueAccessor. + template + bool probeValueAndCache(const Coord& xyz, bool& val, AccessorT&) const + { + return this->probeValue(xyz, val); + } + + /// @brief Return the LEVEL (=0) at which leaf node values reside. + /// @note Used internally by ValueAccessor. + template + static Index getValueLevelAndCache(const Coord&, AccessorT&) { return LEVEL; } + + /// @brief Return a const reference to the first entry in the buffer. + /// @note Since it's actually a reference to a static data member + /// it should not be converted to a non-const pointer! + const bool& getFirstValue() const { if (mValueMask.isOn(0)) return Buffer::sOn; else return Buffer::sOff; } + /// @brief Return a const reference to the last entry in the buffer. + /// @note Since it's actually a reference to a static data member + /// it should not be converted to a non-const pointer! + const bool& getLastValue() const { if (mValueMask.isOn(SIZE-1)) return Buffer::sOn; else return Buffer::sOff; } + + /// Return @c true if all of this node's voxels have the same active state + /// and are equal to within the given tolerance, and return the value in + /// @a constValue and the active state in @a state. + bool isConstant(bool& constValue, bool& state, bool tolerance = 0) const; + + /// @brief Computes the median value of all the active and inactive voxels in this node. + /// @return The median value. + /// + /// @details The median for boolean values is defined as the mode + /// of the values, i.e. the value that occurs most often. + bool medianAll() const; + + /// @brief Computes the median value of all the active voxels in this node. + /// @return The number of active voxels. + /// @param value Updated with the median value of all the active voxels. + /// + /// @details The median for boolean values is defined as the mode + /// of the values, i.e. the value that occurs most often. + Index medianOn(ValueType &value) const; + + /// @brief Computes the median value of all the inactive voxels in this node. + /// @return The number of inactive voxels. + /// @param value Updated with the median value of all the inactive voxels. + /// + /// @details The median for boolean values is defined as the mode + /// of the values, i.e. the value that occurs most often. + Index medianOff(ValueType &value) const; + + /// Return @c true if all of this node's values are inactive. + bool isInactive() const { return mValueMask.isOff(); } + + void resetBackground(bool oldBackground, bool newBackground); + + void negate() { mBuffer.mData.toggle(); } + + template + void merge(const LeafNode& other, bool bg = false, bool otherBG = false); + template void merge(bool tileValue, bool tileActive); + + /// @brief No-op + /// @details This function exists only to enable template instantiation. + void voxelizeActiveTiles(bool = true) {} + + /// @brief Union this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active if either of the original voxels + /// were active. + /// + /// @note This operation modifies only active states, not values. + template + void topologyUnion(const LeafNode& other); + + /// @brief Intersect this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if both of the original voxels + /// were active. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyIntersection. + /// + /// @note This operation modifies only active states, not + /// values. Also note that this operation can result in all voxels + /// being inactive so consider subsequnetly calling prune. + template + void topologyIntersection(const LeafNode& other, const bool&); + + /// @brief Difference this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this LeafNode and inactive in the other LeafNode. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyDifference. + /// + /// @note This operation modifies only active states, not values. + /// Also, because it can deactivate all of this node's voxels, + /// consider subsequently calling prune. + template + void topologyDifference(const LeafNode& other, const bool&); + + template + void combine(const LeafNode& other, CombineOp& op); + template + void combine(bool, bool valueIsActive, CombineOp& op); + + template + void combine2(const LeafNode& other, const OtherType&, bool valueIsActive, CombineOp&); + template + void combine2(bool, const OtherNodeT& other, bool valueIsActive, CombineOp&); + template + void combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp&); + + /// @brief Calls the templated functor BBoxOp with bounding box information. + /// An additional level argument is provided to the callback. + /// + /// @note The bounding boxes are guarenteed to be non-overlapping. + template void visitActiveBBox(BBoxOp&) const; + + template void visit(VisitorOp&); + template void visit(VisitorOp&) const; + + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&); + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&) const; + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false); + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false) const; + + //@{ + /// This function exists only to enable template instantiation. + void prune(const ValueType& /*tolerance*/ = zeroVal()) {} + void addLeaf(LeafNode*) {} + template + void addLeafAndCache(LeafNode*, AccessorT&) {} + template + NodeT* stealNode(const Coord&, const ValueType&, bool) { return nullptr; } + template + NodeT* probeNode(const Coord&) { return nullptr; } + template + const NodeT* probeConstNode(const Coord&) const { return nullptr; } + template void getNodes(ArrayT&) const {} + template void stealNodes(ArrayT&, const ValueType&, bool) {} + //@} + + void addTile(Index level, const Coord&, bool val, bool active); + void addTile(Index offset, bool val, bool active); + template + void addTileAndCache(Index level, const Coord&, bool val, bool active, AccessorT&); + + //@{ + /// @brief Return a pointer to this node. + LeafNode* touchLeaf(const Coord&) { return this; } + template + LeafNode* touchLeafAndCache(const Coord&, AccessorT&) { return this; } + LeafNode* probeLeaf(const Coord&) { return this; } + template + LeafNode* probeLeafAndCache(const Coord&, AccessorT&) { return this; } + template + NodeT* probeNodeAndCache(const Coord&, AccessorT&) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + //@{ + /// @brief Return a @const pointer to this node. + const LeafNode* probeLeaf(const Coord&) const { return this; } + template + const LeafNode* probeLeafAndCache(const Coord&, AccessorT&) const { return this; } + const LeafNode* probeConstLeaf(const Coord&) const { return this; } + template + const LeafNode* probeConstLeafAndCache(const Coord&, AccessorT&) const { return this; } + template + const NodeT* probeConstNodeAndCache(const Coord&, AccessorT&) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + + // + // Iterators + // +protected: + using MaskOnIter = typename NodeMaskType::OnIterator; + using MaskOffIter = typename NodeMaskType::OffIterator; + using MaskDenseIter = typename NodeMaskType::DenseIterator; + + template + struct ValueIter: + // Derives from SparseIteratorBase, but can also be used as a dense iterator, + // if MaskIterT is a dense mask iterator type. + public SparseIteratorBase, NodeT, ValueT> + { + using BaseT = SparseIteratorBase; + + ValueIter() {} + ValueIter(const MaskIterT& iter, NodeT* parent): BaseT(iter, parent) {} + + const bool& getItem(Index pos) const { return this->parent().getValue(pos); } + const bool& getValue() const { return this->getItem(this->pos()); } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, bool value) const { this->parent().setValueOnly(pos, value); } + // Note: setValue() can't be called on const iterators. + void setValue(bool value) const { this->setItem(this->pos(), value); } + + // Note: modifyItem() can't be called on const iterators. + template + void modifyItem(Index n, const ModifyOp& op) const { this->parent().modifyValue(n, op); } + // Note: modifyValue() can't be called on const iterators. + template + void modifyValue(const ModifyOp& op) const { this->modifyItem(this->pos(), op); } + }; + + /// Leaf nodes have no children, so their child iterators have no get/set accessors. + template + struct ChildIter: + public SparseIteratorBase, NodeT, bool> + { + ChildIter() {} + ChildIter(const MaskIterT& iter, NodeT* parent): SparseIteratorBase< + MaskIterT, ChildIter, NodeT, bool>(iter, parent) {} + }; + + template + struct DenseIter: public DenseIteratorBase< + MaskDenseIter, DenseIter, NodeT, /*ChildT=*/void, ValueT> + { + using BaseT = DenseIteratorBase; + using NonConstValueT = typename BaseT::NonConstValueType; + + DenseIter() {} + DenseIter(const MaskDenseIter& iter, NodeT* parent): BaseT(iter, parent) {} + + bool getItem(Index pos, void*& child, NonConstValueT& value) const + { + value = this->parent().getValue(pos); + child = nullptr; + return false; // no child + } + + // Note: setItem() can't be called on const iterators. + //void setItem(Index pos, void* child) const {} + + // Note: unsetItem() can't be called on const iterators. + void unsetItem(Index pos, const ValueT& val) const {this->parent().setValueOnly(pos, val);} + }; + +public: + using ValueOnIter = ValueIter; + using ValueOnCIter = ValueIter; + using ValueOffIter = ValueIter; + using ValueOffCIter = ValueIter; + using ValueAllIter = ValueIter; + using ValueAllCIter = ValueIter; + using ChildOnIter = ChildIter; + using ChildOnCIter = ChildIter; + using ChildOffIter = ChildIter; + using ChildOffCIter = ChildIter; + using ChildAllIter = DenseIter; + using ChildAllCIter = DenseIter; + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(mValueMask.beginOn(), this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(mValueMask.beginOn(), this); } + ValueOnIter beginValueOn() { return ValueOnIter(mValueMask.beginOn(), this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(mValueMask.beginOff(), this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(mValueMask.beginOff(), this); } + ValueOffIter beginValueOff() { return ValueOffIter(mValueMask.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(mValueMask.beginDense(), this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(mValueMask.beginDense(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(mValueMask.beginDense(), this); } + + ValueOnCIter cendValueOn() const { return ValueOnCIter(mValueMask.endOn(), this); } + ValueOnCIter endValueOn() const { return ValueOnCIter(mValueMask.endOn(), this); } + ValueOnIter endValueOn() { return ValueOnIter(mValueMask.endOn(), this); } + ValueOffCIter cendValueOff() const { return ValueOffCIter(mValueMask.endOff(), this); } + ValueOffCIter endValueOff() const { return ValueOffCIter(mValueMask.endOff(), this); } + ValueOffIter endValueOff() { return ValueOffIter(mValueMask.endOff(), this); } + ValueAllCIter cendValueAll() const { return ValueAllCIter(mValueMask.endDense(), this); } + ValueAllCIter endValueAll() const { return ValueAllCIter(mValueMask.endDense(), this); } + ValueAllIter endValueAll() { return ValueAllIter(mValueMask.endDense(), this); } + + // Note that [c]beginChildOn() and [c]beginChildOff() actually return end iterators, + // because leaf nodes have no children. + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnCIter beginChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(mValueMask.endOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffCIter beginChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(mValueMask.endOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(mValueMask.beginDense(), this); } + ChildAllCIter beginChildAll() const { return ChildAllCIter(mValueMask.beginDense(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(mValueMask.beginDense(), this); } + + ChildOnCIter cendChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnCIter endChildOn() const { return ChildOnCIter(mValueMask.endOn(), this); } + ChildOnIter endChildOn() { return ChildOnIter(mValueMask.endOn(), this); } + ChildOffCIter cendChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffCIter endChildOff() const { return ChildOffCIter(mValueMask.endOff(), this); } + ChildOffIter endChildOff() { return ChildOffIter(mValueMask.endOff(), this); } + ChildAllCIter cendChildAll() const { return ChildAllCIter(mValueMask.endDense(), this); } + ChildAllCIter endChildAll() const { return ChildAllCIter(mValueMask.endDense(), this); } + ChildAllIter endChildAll() { return ChildAllIter(mValueMask.endDense(), this); } + + // + // Mask accessors + // + bool isValueMaskOn(Index n) const { return mValueMask.isOn(n); } + bool isValueMaskOn() const { return mValueMask.isOn(); } + bool isValueMaskOff(Index n) const { return mValueMask.isOff(n); } + bool isValueMaskOff() const { return mValueMask.isOff(); } + const NodeMaskType& getValueMask() const { return mValueMask; } + const NodeMaskType& valueMask() const { return mValueMask; } + NodeMaskType& getValueMask() { return mValueMask; } + void setValueMask(const NodeMaskType& mask) { mValueMask = mask; } + bool isChildMaskOn(Index) const { return false; } // leaf nodes have no children + bool isChildMaskOff(Index) const { return true; } + bool isChildMaskOff() const { return true; } +protected: + void setValueMask(Index n, bool on) { mValueMask.set(n, on); } + void setValueMaskOn(Index n) { mValueMask.setOn(n); } + void setValueMaskOff(Index n) { mValueMask.setOff(n); } + + /// Compute the origin of the leaf node that contains the voxel with the given coordinates. + static void evalNodeOrigin(Coord& xyz) { xyz &= ~(DIM - 1); } + + template + static inline void doVisit(NodeT&, VisitorOp&); + + template + static inline void doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp&); + + template + static inline void doVisit2(NodeT& self, OtherChildAllIterT&, VisitorOp&, bool otherIsLHS); + + + /// Bitmask that determines which voxels are active + NodeMaskType mValueMask; + /// Bitmask representing the values of voxels + Buffer mBuffer; + /// Global grid index coordinates (x,y,z) of the local origin of this node + Coord mOrigin; + +private: + /// @brief During topology-only construction, access is needed + /// to protected/private members of other template instances. + template friend class LeafNode; + + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + + //@{ + /// Allow iterators to call mask accessor methods (see below). + /// @todo Make mask accessors public? + friend class IteratorBase; + friend class IteratorBase; + friend class IteratorBase; + //@} + +}; // class LeafNode + + +//////////////////////////////////////// + + +template +inline +LeafNode::LeafNode() + : mOrigin(0, 0, 0) +{ +} + + +template +inline +LeafNode::LeafNode(const Coord& xyz, bool value, bool active) + : mValueMask(active) + , mBuffer(value) + , mOrigin(xyz & (~(DIM - 1))) +{ +} + + +template +inline +LeafNode::LeafNode(PartialCreate, const Coord& xyz, bool value, bool active) + : mValueMask(active) + , mBuffer(value) + , mOrigin(xyz & (~(DIM - 1))) +{ + /// @todo For now, this is identical to the non-PartialCreate constructor. + /// Consider modifying the Buffer class to allow it to be constructed + /// without allocating a bitmask. +} + + +template +inline +LeafNode::LeafNode(const LeafNode &other) + : mValueMask(other.valueMask()) + , mBuffer(other.mBuffer) + , mOrigin(other.mOrigin) +{ +} + + +// Copy-construct from a leaf node with the same configuration but a different ValueType. +template +template +inline +LeafNode::LeafNode(const LeafNode& other) + : mValueMask(other.valueMask()) + , mOrigin(other.origin()) +{ + struct Local { + /// @todo Consider using a value conversion functor passed as an argument instead. + static inline bool convertValue(const ValueT& val) { return bool(val); } + }; + + for (Index i = 0; i < SIZE; ++i) { + mBuffer.setValue(i, Local::convertValue(other.mBuffer[i])); + } +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + bool background, TopologyCopy) + : mValueMask(other.valueMask()) + , mBuffer(background) + , mOrigin(other.origin()) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, TopologyCopy) + : mValueMask(other.valueMask()) + , mBuffer(other.valueMask())// value = active state + , mOrigin(other.origin()) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + bool offValue, bool onValue, TopologyCopy) + : mValueMask(other.valueMask()) + , mBuffer(other.valueMask()) + , mOrigin(other.origin()) +{ + if (offValue) { if (!onValue) mBuffer.mData.toggle(); else mBuffer.mData.setOn(); } +} + + +template +inline +LeafNode::~LeafNode() +{ +} + + +//////////////////////////////////////// + + +template +inline Index64 +LeafNode::memUsage() const +{ + // Use sizeof(*this) to capture alignment-related padding + return sizeof(*this); +} + + +template +inline void +LeafNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + CoordBBox this_bbox = this->getNodeBoundingBox(); + if (bbox.isInside(this_bbox)) return;//this LeafNode is already enclosed in the bbox + if (ValueOnCIter iter = this->cbeginValueOn()) {//any active values? + if (visitVoxels) {//use voxel granularity? + this_bbox.reset(); + for(; iter; ++iter) this_bbox.expand(this->offsetToLocalCoord(iter.pos())); + this_bbox.translate(this->origin()); + } + bbox.expand(this_bbox); + } +} + + +template +template +inline bool +LeafNode::hasSameTopology(const LeafNode* other) const +{ + assert(other); + return (Log2Dim == OtherLog2Dim && mValueMask == other->getValueMask()); +} + + +template +inline std::string +LeafNode::str() const +{ + std::ostringstream ostr; + ostr << "LeafNode @" << mOrigin << ": "; + for (Index32 n = 0; n < SIZE; ++n) ostr << (mValueMask.isOn(n) ? '#' : '.'); + return ostr.str(); +} + + +//////////////////////////////////////// + + +template +inline Index +LeafNode::coordToOffset(const Coord& xyz) +{ + assert ((xyz[0] & (DIM-1u)) < DIM && (xyz[1] & (DIM-1u)) < DIM && (xyz[2] & (DIM-1u)) < DIM); + return ((xyz[0] & (DIM-1u)) << 2*Log2Dim) + + ((xyz[1] & (DIM-1u)) << Log2Dim) + + (xyz[2] & (DIM-1u)); +} + + +template +inline Coord +LeafNode::offsetToLocalCoord(Index n) +{ + assert(n < (1 << 3*Log2Dim)); + Coord xyz; + xyz.setX(n >> 2*Log2Dim); + n &= ((1 << 2*Log2Dim) - 1); + xyz.setY(n >> Log2Dim); + xyz.setZ(n & ((1 << Log2Dim) - 1)); + return xyz; +} + + +template +inline Coord +LeafNode::offsetToGlobalCoord(Index n) const +{ + return (this->offsetToLocalCoord(n) + this->origin()); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::readTopology(std::istream& is, bool /*fromHalf*/) +{ + mValueMask.load(is); +} + + +template +inline void +LeafNode::writeTopology(std::ostream& os, bool /*toHalf*/) const +{ + mValueMask.save(os); +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, const CoordBBox& clipBBox, bool fromHalf) +{ + // Boolean LeafNodes don't currently implement lazy loading. + // Instead, load the full buffer, then clip it. + + this->readBuffers(is, fromHalf); + + // Get this tree's background value. + bool background = false; + if (const void* bgPtr = io::getGridBackgroundValuePtr(is)) { + background = *static_cast(bgPtr); + } + this->clip(clipBBox, background); +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, bool /*fromHalf*/) +{ + // Read in the value mask. + mValueMask.load(is); + // Read in the origin. + is.read(reinterpret_cast(&mOrigin), sizeof(Coord::ValueType) * 3); + + if (io::getFormatVersion(is) >= OPENVDB_FILE_VERSION_BOOL_LEAF_OPTIMIZATION) { + // Read in the mask for the voxel values. + mBuffer.mData.load(is); + } else { + // Older files stored one or more bool arrays. + + // Read in the number of buffers, which should now always be one. + int8_t numBuffers = 0; + is.read(reinterpret_cast(&numBuffers), sizeof(int8_t)); + + // Read in the buffer. + // (Note: prior to the bool leaf optimization, buffers were always compressed.) + std::unique_ptr buf{new bool[SIZE]}; + io::readData(is, buf.get(), SIZE, /*isCompressed=*/true); + + // Transfer values to mBuffer. + mBuffer.mData.setOff(); + for (Index i = 0; i < SIZE; ++i) { + if (buf[i]) mBuffer.mData.setOn(i); + } + + if (numBuffers > 1) { + // Read in and discard auxiliary buffers that were created with + // earlier versions of the library. + for (int i = 1; i < numBuffers; ++i) { + io::readData(is, buf.get(), SIZE, /*isCompressed=*/true); + } + } + } +} + + +template +inline void +LeafNode::writeBuffers(std::ostream& os, bool /*toHalf*/) const +{ + // Write out the value mask. + mValueMask.save(os); + // Write out the origin. + os.write(reinterpret_cast(&mOrigin), sizeof(Coord::ValueType) * 3); + // Write out the voxel values. + mBuffer.mData.save(os); +} + + +//////////////////////////////////////// + + +template +inline bool +LeafNode::operator==(const LeafNode& other) const +{ + return mOrigin == other.mOrigin && + mValueMask == other.valueMask() && + mBuffer == other.mBuffer; +} + + +template +inline bool +LeafNode::operator!=(const LeafNode& other) const +{ + return !(this->operator==(other)); +} + + +//////////////////////////////////////// + + +template +inline bool +LeafNode::isConstant(bool& constValue, bool& state, bool tolerance) const +{ + if (!mValueMask.isConstant(state)) return false; + + // Note: if tolerance is true (i.e., 1), then all boolean values compare equal. + if (!tolerance && !(mBuffer.mData.isOn() || mBuffer.mData.isOff())) return false; + + constValue = mBuffer.mData.isOn(); + return true; +} + +//////////////////////////////////////// + +template +inline bool +LeafNode::medianAll() const +{ + const Index countTrue = mBuffer.mData.countOn(); + return countTrue > (NUM_VALUES >> 1); +} + +template +inline Index +LeafNode::medianOn(bool& state) const +{ + const NodeMaskType tmp = mBuffer.mData & mValueMask;//both true and active + const Index countTrueOn = tmp.countOn(), countOn = mValueMask.countOn(); + state = countTrueOn > (NUM_VALUES >> 1); + return countOn; +} + +template +inline Index +LeafNode::medianOff(bool& state) const +{ + const NodeMaskType tmp = mBuffer.mData & (!mValueMask);//both true and inactive + const Index countTrueOff = tmp.countOn(), countOff = mValueMask.countOff(); + state = countTrueOff > (NUM_VALUES >> 1); + return countOff; +} + +//////////////////////////////////////// + + +template +inline void +LeafNode::addTile(Index /*level*/, const Coord& xyz, bool val, bool active) +{ + this->addTile(this->coordToOffset(xyz), val, active); +} + +template +inline void +LeafNode::addTile(Index offset, bool val, bool active) +{ + assert(offset < SIZE); + this->setValueOnly(offset, val); + this->setActiveState(offset, active); +} + +template +template +inline void +LeafNode::addTileAndCache(Index level, const Coord& xyz, + bool val, bool active, AccessorT&) +{ + this->addTile(level, xyz, val, active); +} + + +//////////////////////////////////////// + + +template +inline const bool& +LeafNode::getValue(const Coord& xyz) const +{ + // This *CANNOT* use operator ? because Visual C++ + if (mBuffer.mData.isOn(this->coordToOffset(xyz))) return Buffer::sOn; else return Buffer::sOff; +} + + +template +inline const bool& +LeafNode::getValue(Index offset) const +{ + assert(offset < SIZE); + // This *CANNOT* use operator ? for Windows + if (mBuffer.mData.isOn(offset)) return Buffer::sOn; else return Buffer::sOff; +} + + +template +inline bool +LeafNode::probeValue(const Coord& xyz, bool& val) const +{ + const Index offset = this->coordToOffset(xyz); + val = mBuffer.mData.isOn(offset); + return mValueMask.isOn(offset); +} + + +template +inline void +LeafNode::setValueOn(const Coord& xyz, bool val) +{ + this->setValueOn(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setValueOn(Index offset, bool val) +{ + assert(offset < SIZE); + mValueMask.setOn(offset); + mBuffer.mData.set(offset, val); +} + + +template +inline void +LeafNode::setValueOnly(const Coord& xyz, bool val) +{ + this->setValueOnly(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setActiveState(const Coord& xyz, bool on) +{ + mValueMask.set(this->coordToOffset(xyz), on); +} + + +template +inline void +LeafNode::setValueOff(const Coord& xyz, bool val) +{ + this->setValueOff(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setValueOff(Index offset, bool val) +{ + assert(offset < SIZE); + mValueMask.setOff(offset); + mBuffer.mData.set(offset, val); +} + + +template +template +inline void +LeafNode::modifyValue(Index offset, const ModifyOp& op) +{ + bool val = mBuffer.mData.isOn(offset); + op(val); + mBuffer.mData.set(offset, val); + mValueMask.setOn(offset); +} + + +template +template +inline void +LeafNode::modifyValue(const Coord& xyz, const ModifyOp& op) +{ + this->modifyValue(this->coordToOffset(xyz), op); +} + + +template +template +inline void +LeafNode::modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) +{ + const Index offset = this->coordToOffset(xyz); + bool val = mBuffer.mData.isOn(offset), state = mValueMask.isOn(offset); + op(val, state); + mBuffer.mData.set(offset, val); + mValueMask.set(offset, state); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::resetBackground(bool oldBackground, bool newBackground) +{ + if (newBackground != oldBackground) { + // Flip mBuffer's background bits and zero its foreground bits. + NodeMaskType bgMask = !(mBuffer.mData | mValueMask); + // Overwrite mBuffer's background bits, leaving its foreground bits intact. + mBuffer.mData = (mBuffer.mData & mValueMask) | bgMask; + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::merge(const LeafNode& other, bool /*bg*/, bool /*otherBG*/) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy == MERGE_NODES) return; + for (typename NodeMaskType::OnIterator iter = other.valueMask().beginOn(); iter; ++iter) { + const Index n = iter.pos(); + if (mValueMask.isOff(n)) { + mBuffer.mData.set(n, other.mBuffer.mData.isOn(n)); + mValueMask.setOn(n); + } + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + +template +template +inline void +LeafNode::merge(bool tileValue, bool tileActive) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy != MERGE_ACTIVE_STATES_AND_NODES) return; + if (!tileActive) return; + // Replace all inactive values with the active tile value. + if (tileValue) mBuffer.mData |= !mValueMask; // -0=>1, +0=>0, -1=>1, +1=>1 (-,+ = off,on) + else mBuffer.mData &= mValueMask; // -0=>0, +0=>0, -1=>0, +1=>1 + mValueMask.setOn(); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::topologyUnion(const LeafNode& other) +{ + mValueMask |= other.valueMask(); +} + + +template +template +inline void +LeafNode::topologyIntersection(const LeafNode& other, + const bool&) +{ + mValueMask &= other.valueMask(); +} + + +template +template +inline void +LeafNode::topologyDifference(const LeafNode& other, + const bool&) +{ + mValueMask &= !other.valueMask(); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::clip(const CoordBBox& clipBBox, bool background) +{ + CoordBBox nodeBBox = this->getNodeBoundingBox(); + if (!clipBBox.hasOverlap(nodeBBox)) { + // This node lies completely outside the clipping region. Fill it with background tiles. + this->fill(nodeBBox, background, /*active=*/false); + } else if (clipBBox.isInside(nodeBBox)) { + // This node lies completely inside the clipping region. Leave it intact. + return; + } + + // This node isn't completely contained inside the clipping region. + // Set any voxels that lie outside the region to the background value. + + // Construct a boolean mask that is on inside the clipping region and off outside it. + NodeMaskType mask; + nodeBBox.intersect(clipBBox); + Coord xyz; + int &x = xyz.x(), &y = xyz.y(), &z = xyz.z(); + for (x = nodeBBox.min().x(); x <= nodeBBox.max().x(); ++x) { + for (y = nodeBBox.min().y(); y <= nodeBBox.max().y(); ++y) { + for (z = nodeBBox.min().z(); z <= nodeBBox.max().z(); ++z) { + mask.setOn(static_cast(this->coordToOffset(xyz))); + } + } + } + + // Set voxels that lie in the inactive region of the mask (i.e., outside + // the clipping region) to the background value. + for (MaskOffIter maskIter = mask.beginOff(); maskIter; ++maskIter) { + this->setValueOff(maskIter.pos(), background); + } +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::fill(const CoordBBox& bbox, bool value, bool active) +{ + auto clippedBBox = this->getNodeBoundingBox(); + clippedBBox.intersect(bbox); + if (!clippedBBox) return; + + for (Int32 x = clippedBBox.min().x(); x <= clippedBBox.max().x(); ++x) { + const Index offsetX = (x & (DIM-1u))<<2*Log2Dim; + for (Int32 y = clippedBBox.min().y(); y <= clippedBBox.max().y(); ++y) { + const Index offsetXY = offsetX + ((y & (DIM-1u))<< Log2Dim); + for (Int32 z = clippedBBox.min().z(); z <= clippedBBox.max().z(); ++z) { + const Index offset = offsetXY + (z & (DIM-1u)); + mValueMask.set(offset, active); + mBuffer.mData.set(offset, value); + } + } + } +} + +template +inline void +LeafNode::fill(const bool& value) +{ + mBuffer.fill(value); +} + +template +inline void +LeafNode::fill(const bool& value, bool active) +{ + mBuffer.fill(value); + mValueMask.set(active); +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::copyToDense(const CoordBBox& bbox, DenseT& dense) const +{ + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + DenseValueType* t0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // target array + const Int32 n0 = bbox.min()[2] & (DIM-1u); + for (Int32 x = bbox.min()[0], ex = bbox.max()[0] + 1; x < ex; ++x) { + DenseValueType* t1 = t0 + xStride * (x - min[0]); + const Int32 n1 = n0 + ((x & (DIM-1u)) << 2*LOG2DIM); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1] + 1; y < ey; ++y) { + DenseValueType* t2 = t1 + yStride * (y - min[1]); + Int32 n2 = n1 + ((y & (DIM-1u)) << LOG2DIM); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2] + 1; z < ez; ++z, t2 += zStride) { + *t2 = DenseValueType(mBuffer.mData.isOn(n2++)); + } + } + } +} + + +template +template +inline void +LeafNode::copyFromDense(const CoordBBox& bbox, const DenseT& dense, + bool background, bool tolerance) +{ + using DenseValueType = typename DenseT::ValueType; + struct Local { + inline static bool toBool(const DenseValueType& v) { return !math::isZero(v); } + }; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + const DenseValueType* s0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // source + const Int32 n0 = bbox.min()[2] & (DIM-1u); + for (Int32 x = bbox.min()[0], ex = bbox.max()[0] + 1; x < ex; ++x) { + const DenseValueType* s1 = s0 + xStride * (x - min[0]); + const Int32 n1 = n0 + ((x & (DIM-1u)) << 2*LOG2DIM); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1] + 1; y < ey; ++y) { + const DenseValueType* s2 = s1 + yStride * (y - min[1]); + Int32 n2 = n1 + ((y & (DIM-1u)) << LOG2DIM); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2]+1; z < ez; ++z, ++n2, s2 += zStride) { + // Note: if tolerance is true (i.e., 1), then all boolean values compare equal. + if (tolerance || (background == Local::toBool(*s2))) { + mValueMask.setOff(n2); + mBuffer.mData.set(n2, background); + } else { + mValueMask.setOn(n2); + mBuffer.mData.set(n2, Local::toBool(*s2)); + } + } + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine(const LeafNode& other, CombineOp& op) +{ + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = mBuffer.mData.isOn(i), bVal = other.mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(mValueMask.isOn(i)) + .setBRef(bVal) + .setBIsActive(other.valueMask().isOn(i)) + .setResultRef(result)); + mValueMask.set(i, args.resultIsActive()); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine(bool value, bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(mValueMask.isOn(i)) + .setResultRef(result)); + mValueMask.set(i, args.resultIsActive()); + mBuffer.mData.set(i, result); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine2(const LeafNode& other, const OtherType& value, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = other.mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(other.valueMask().isOn(i)) + .setResultRef(result)); + mValueMask.set(i, args.resultIsActive()); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine2(bool value, const OtherNodeT& other, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setARef(value).setAIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, bVal = other.mBuffer.mData.isOn(i); + op(args.setBRef(bVal) + .setBIsActive(other.valueMask().isOn(i)) + .setResultRef(result)); + mValueMask.set(i, args.resultIsActive()); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp& op) +{ + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + // Default behavior: output voxel is active if either input voxel is active. + mValueMask.set(i, b0.valueMask().isOn(i) || b1.valueMask().isOn(i)); + + bool result = false, b0Val = b0.mBuffer.mData.isOn(i), b1Val = b1.mBuffer.mData.isOn(i); + op(args.setARef(b0Val) + .setAIsActive(b0.valueMask().isOn(i)) + .setBRef(b1Val) + .setBIsActive(b1.valueMask().isOn(i)) + .setResultRef(result)); + mValueMask.set(i, args.resultIsActive()); + mBuffer.mData.set(i, result); + } +} + + +//////////////////////////////////////// + +template +template +inline void +LeafNode::visitActiveBBox(BBoxOp& op) const +{ + if (op.template descent()) { + for (ValueOnCIter i=this->cbeginValueOn(); i; ++i) { +#ifdef _MSC_VER + op.operator()(CoordBBox::createCube(i.getCoord(), 1)); +#else + op.template operator()(CoordBBox::createCube(i.getCoord(), 1)); +#endif + } + } else { +#ifdef _MSC_VER + op.operator()(this->getNodeBoundingBox()); +#else + op.template operator()(this->getNodeBoundingBox()); +#endif + } +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) const +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::doVisit(NodeT& self, VisitorOp& op) +{ + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) +{ + doVisit2Node(*this, other, op); +} + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) const +{ + doVisit2Node(*this, other, op); +} + + +template +template< + typename NodeT, + typename OtherNodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp& op) +{ + // Allow the two nodes to have different ValueTypes, but not different dimensions. + static_assert(OtherNodeT::SIZE == NodeT::SIZE, + "can't visit nodes of different sizes simultaneously"); + static_assert(OtherNodeT::LEVEL == NodeT::LEVEL, + "can't visit nodes at different tree levels simultaneously"); + + ChildAllIterT iter = self.beginChildAll(); + OtherChildAllIterT otherIter = other.beginChildAll(); + + for ( ; iter && otherIter; ++iter, ++otherIter) { + op(iter, otherIter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) +{ + doVisit2(*this, otherIter, op, otherIsLHS); +} + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) const +{ + doVisit2(*this, otherIter, op, otherIsLHS); +} + + +template +template< + typename NodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2(NodeT& self, OtherChildAllIterT& otherIter, + VisitorOp& op, bool otherIsLHS) +{ + if (!otherIter) return; + + if (otherIsLHS) { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(otherIter, iter); + } + } else { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter, otherIter); + } + } +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_LEAF_NODE_BOOL_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/LeafNodeMask.h b/openvdb/tree/LeafNodeMask.h new file mode 100644 index 00000000..ea7b79e1 --- /dev/null +++ b/openvdb/tree/LeafNodeMask.h @@ -0,0 +1,1643 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_TREE_LEAF_NODE_MASK_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_LEAF_NODE_MASK_HAS_BEEN_INCLUDED + +#include +#include +#include // for io::readData(), etc. +#include // for math::isZero() +#include +#include "LeafNode.h" +#include "Iterator.h" +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +/// @brief LeafNode specialization for values of type ValueMask that encodes both +/// the active states and the boolean values of (2^Log2Dim)^3 voxels +/// in a single bit mask, i.e. voxel values and states are indistinguishable! +template +class LeafNode +{ +public: + using LeafNodeType = LeafNode; + using BuildType = ValueMask;// this is a rare case where + using ValueType = bool;// value type != build type + using Buffer = LeafBuffer;// buffer uses the bool specialization + using NodeMaskType = util::NodeMask; + using Ptr = SharedPtr; + + // These static declarations must be on separate lines to avoid VC9 compiler errors. + static const Index LOG2DIM = Log2Dim; // needed by parent nodes + static const Index TOTAL = Log2Dim; // needed by parent nodes + static const Index DIM = 1 << TOTAL; // dimension along one coordinate direction + static const Index NUM_VALUES = 1 << 3 * Log2Dim; + static const Index NUM_VOXELS = NUM_VALUES; // total number of voxels represented by this node + static const Index SIZE = NUM_VALUES; + static const Index LEVEL = 0; // level 0 = leaf + + /// @brief ValueConverter::Type is the type of a LeafNode having the same + /// dimensions as this node but a different value type, T. + template + struct ValueConverter { using Type = LeafNode; }; + + /// @brief SameConfiguration::value is @c true if and only if + /// OtherNodeType is the type of a LeafNode with the same dimensions as this node. + template + struct SameConfiguration { + static const bool value = SameLeafConfig::value; + }; + + /// Default constructor + LeafNode(); + + /// Constructor + /// @param xyz the coordinates of a voxel that lies within the node + /// @param value the initial value = state for all of this node's voxels + /// @param dummy dummy value + explicit LeafNode(const Coord& xyz, bool value = false, bool dummy = false); + + /// "Partial creation" constructor used during file input + LeafNode(PartialCreate, const Coord& xyz, bool value = false, bool dummy = false); + + /// Deep copy constructor + LeafNode(const LeafNode&); + + /// Value conversion copy constructor + template + explicit LeafNode(const LeafNode& other); + + /// Topology copy constructor + template + LeafNode(const LeafNode& other, TopologyCopy); + + //@{ + /// @brief Topology copy constructor + /// @note This variant exists mainly to enable template instantiation. + template + LeafNode(const LeafNode& other, bool offValue, bool onValue, TopologyCopy); + template + LeafNode(const LeafNode& other, bool background, TopologyCopy); + //@} + + /// Destructor + ~LeafNode(); + + // + // Statistics + // + /// Return log2 of the size of the buffer storage. + static Index log2dim() { return Log2Dim; } + /// Return the number of voxels in each dimension. + static Index dim() { return DIM; } + /// Return the total number of voxels represented by this LeafNode + static Index size() { return SIZE; } + /// Return the total number of voxels represented by this LeafNode + static Index numValues() { return SIZE; } + /// Return the level of this node, which by definition is zero for LeafNodes + static Index getLevel() { return LEVEL; } + /// Append the Log2Dim of this LeafNode to the specified vector + static void getNodeLog2Dims(std::vector& dims) { dims.push_back(Log2Dim); } + /// Return the dimension of child nodes of this LeafNode, which is one for voxels. + static Index getChildDim() { return 1; } + /// Return the leaf count for this node, which is one. + static Index32 leafCount() { return 1; } + /// no-op + void nodeCount(std::vector &) const {} + /// Return the non-leaf count for this node, which is zero. + static Index32 nonLeafCount() { return 0; } + + /// Return the number of active voxels. + Index64 onVoxelCount() const { return mBuffer.mData.countOn(); } + /// Return the number of inactive voxels. + Index64 offVoxelCount() const { return mBuffer.mData.countOff(); } + Index64 onLeafVoxelCount() const { return this->onVoxelCount(); } + Index64 offLeafVoxelCount() const { return this->offVoxelCount(); } + static Index64 onTileCount() { return 0; } + static Index64 offTileCount() { return 0; } + + /// Return @c true if this node has no active voxels. + bool isEmpty() const { return mBuffer.mData.isOff(); } + /// Return @c true if this node only contains active voxels. + bool isDense() const { return mBuffer.mData.isOn(); } + /// @brief Return @c true if memory for this node's buffer has been allocated. + /// @details Currently, boolean leaf nodes don't support partial creation, + /// so this always returns @c true. + bool isAllocated() const { return true; } + /// @brief Allocate memory for this node's buffer if it has not already been allocated. + /// @details Currently, boolean leaf nodes don't support partial creation, + /// so this has no effect. + bool allocate() { return true; } + + /// Return the memory in bytes occupied by this node. + Index64 memUsage() const; + + /// Expand the given bounding box so that it includes this leaf node's active voxels. + /// If visitVoxels is false this LeafNode will be approximated as dense, i.e. with all + /// voxels active. Else the individual active voxels are visited to produce a tight bbox. + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// @brief Return the bounding box of this node, i.e., the full index space + /// spanned by this leaf node. + CoordBBox getNodeBoundingBox() const { return CoordBBox::createCube(mOrigin, DIM); } + + /// Set the grid index coordinates of this node's local origin. + void setOrigin(const Coord& origin) { mOrigin = origin; } + //@{ + /// Return the grid index coordinates of this node's local origin. + const Coord& origin() const { return mOrigin; } + void getOrigin(Coord& origin) const { origin = mOrigin; } + void getOrigin(Int32& x, Int32& y, Int32& z) const { mOrigin.asXYZ(x, y, z); } + //@} + + /// Return the linear table offset of the given global or local coordinates. + static Index coordToOffset(const Coord& xyz); + /// @brief Return the local coordinates for a linear table offset, + /// where offset 0 has coordinates (0, 0, 0). + static Coord offsetToLocalCoord(Index n); + /// Return the global coordinates for a linear table offset. + Coord offsetToGlobalCoord(Index n) const; + + /// Return a string representation of this node. + std::string str() const; + + /// @brief Return @c true if the given node (which may have a different @c ValueType + /// than this node) has the same active value topology as this node. + template + bool hasSameTopology(const LeafNode* other) const; + + /// Check for buffer equivalence by value. + bool operator==(const LeafNode&) const; + bool operator!=(const LeafNode&) const; + + // + // Buffer management + // + /// @brief Exchange this node's data buffer with the given data buffer + /// without changing the active states of the values. + void swap(Buffer& other) { mBuffer.swap(other); } + const Buffer& buffer() const { return mBuffer; } + Buffer& buffer() { return mBuffer; } + + // + // I/O methods + // + /// Read in just the topology. + void readTopology(std::istream&, bool fromHalf = false); + /// Write out just the topology. + void writeTopology(std::ostream&, bool toHalf = false) const; + + /// Read in the topology and the origin. + void readBuffers(std::istream&, bool fromHalf = false); + void readBuffers(std::istream& is, const CoordBBox&, bool fromHalf = false); + /// Write out the topology and the origin. + void writeBuffers(std::ostream&, bool toHalf = false) const; + + // + // Accessor methods + // + /// Return the value of the voxel at the given coordinates. + const bool& getValue(const Coord& xyz) const; + /// Return the value of the voxel at the given offset. + const bool& getValue(Index offset) const; + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @param xyz the coordinates of the voxel to be probed + /// @param[out] val the value of the voxel at the given coordinates + bool probeValue(const Coord& xyz, bool& val) const; + + /// Return the level (0) at which leaf node values reside. + static Index getValueLevel(const Coord&) { return LEVEL; } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the active state of the voxel at the given offset but don't change its value. + void setActiveState(Index offset, bool on) { assert(offsetcoordToOffset(xyz)); } + /// Mark the voxel at the given offset as inactive but don't change its value. + void setValueOff(Index offset) { assert(offset < SIZE); mBuffer.mData.setOff(offset); } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, bool val); + /// Set the value of the voxel at the given offset and mark the voxel as inactive. + void setValueOff(Index offset, bool val); + + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz) { mBuffer.mData.setOn(this->coordToOffset(xyz)); } + /// Mark the voxel at the given offset as active but don't change its value. + void setValueOn(Index offset) { assert(offset < SIZE); mBuffer.mData.setOn(offset); } + + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValueOn(const Coord& xyz, bool val); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, bool val) { this->setValueOn(xyz, val); } + /// Set the value of the voxel at the given offset and mark the voxel as active. + void setValueOn(Index offset, bool val); + + /// @brief Apply a functor to the value of the voxel at the given offset + /// and mark the voxel as active. + template + void modifyValue(Index offset, const ModifyOp& op); + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + template + void modifyValue(const Coord& xyz, const ModifyOp& op); + + /// Apply a functor to the voxel at the given coordinates. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op); + + /// Mark all voxels as active but don't change their values. + void setValuesOn() { mBuffer.mData.setOn(); } + /// Mark all voxels as inactive but don't change their values. + void setValuesOff() { mBuffer.mData.setOff(); } + + /// Return @c true if the voxel at the given coordinates is active. + bool isValueOn(const Coord& xyz) const { return mBuffer.mData.isOn(this->coordToOffset(xyz)); } + /// Return @c true if the voxel at the given offset is active. + bool isValueOn(Index offset) const { assert(offset < SIZE); return mBuffer.mData.isOn(offset); } + + /// Return @c false since leaf nodes never contain tiles. + static bool hasActiveTiles() { return false; } + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&, bool background); + + /// Set all voxels within an axis-aligned box to the specified value. + void fill(const CoordBBox& bbox, bool value, bool = false); + /// Set all voxels within an axis-aligned box to the specified value. + void denseFill(const CoordBBox& bbox, bool value, bool = false) { this->fill(bbox, value); } + + /// Set the state of all voxels to the specified active state. + void fill(const bool& value, bool dummy = false); + + /// @brief Copy into a dense grid the values of the voxels that lie within + /// a given bounding box. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into the dense grid + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyToDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyToDense(const CoordBBox& bbox, DenseT& dense) const; + + /// @brief Copy from a dense grid into this node the values of the voxels + /// that lie within a given bounding box. + /// @details Only values that are different (by more than the given tolerance) + /// from the background value will be active. Other values are inactive + /// and truncated to the background value. + /// + /// @param bbox inclusive bounding box of the voxels to be copied into this node + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + /// @param background background value of the tree that this node belongs to + /// @param tolerance tolerance within which a value equals the background value + /// + /// @note @a bbox is assumed to be identical to or contained in the coordinate domains + /// of both the dense grid and this node, i.e., no bounds checking is performed. + /// @note Consider using tools::CopyFromDense in tools/Dense.h + /// instead of calling this method directly. + template + void copyFromDense(const CoordBBox& bbox, const DenseT& dense, bool background, bool tolerance); + + /// @brief Return the value of the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + const bool& getValueAndCache(const Coord& xyz, AccessorT&) const {return this->getValue(xyz);} + + /// @brief Return @c true if the voxel at the given coordinates is active. + /// @note Used internally by ValueAccessor. + template + bool isValueOnAndCache(const Coord& xyz, AccessorT&) const { return this->isValueOn(xyz); } + + /// @brief Change the value of the voxel at the given coordinates and mark it as active. + /// @note Used internally by ValueAccessor. + template + void setValueAndCache(const Coord& xyz, bool val, AccessorT&) { this->setValueOn(xyz, val); } + + /// @brief Change the value of the voxel at the given coordinates + /// but preserve its state. + /// @note Used internally by ValueAccessor. + template + void setValueOnlyAndCache(const Coord& xyz, bool val, AccessorT&) {this->setValueOnly(xyz,val);} + + /// @brief Change the value of the voxel at the given coordinates and mark it as inactive. + /// @note Used internally by ValueAccessor. + template + void setValueOffAndCache(const Coord& xyz, bool value, AccessorT&) + { + this->setValueOff(xyz, value); + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValue(xyz, op); + } + + /// Apply a functor to the voxel at the given coordinates. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndActiveStateAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&) + { + this->modifyValueAndActiveState(xyz, op); + } + + /// @brief Set the active state of the voxel at the given coordinates + /// without changing its value. + /// @note Used internally by ValueAccessor. + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT&) + { + this->setActiveState(xyz, on); + } + + /// @brief Return @c true if the voxel at the given coordinates is active + /// and return the voxel value in @a val. + /// @note Used internally by ValueAccessor. + template + bool probeValueAndCache(const Coord& xyz, bool& val, AccessorT&) const + { + return this->probeValue(xyz, val); + } + + /// @brief Return the LEVEL (=0) at which leaf node values reside. + /// @note Used internally by ValueAccessor. + template + static Index getValueLevelAndCache(const Coord&, AccessorT&) { return LEVEL; } + + /// @brief Return a const reference to the first entry in the buffer. + /// @note Since it's actually a reference to a static data member + /// it should not be converted to a non-const pointer! + const bool& getFirstValue() const { if (mBuffer.mData.isOn(0)) return Buffer::sOn; else return Buffer::sOff; } + /// @brief Return a const reference to the last entry in the buffer. + /// @note Since it's actually a reference to a static data member + /// it should not be converted to a non-const pointer! + const bool& getLastValue() const { if (mBuffer.mData.isOn(SIZE-1)) return Buffer::sOn; else return Buffer::sOff; } + + /// Return @c true if all of this node's voxels have the same active state + /// and are equal to within the given tolerance, and return the value in + /// @a constValue and the active state in @a state. + bool isConstant(bool& constValue, bool& state, bool tolerance = 0) const; + + /// @brief Computes the median value of all the active and inactive voxels in this node. + /// @return The median value. + /// + /// @details The median for boolean values is defined as the mode + /// of the values, i.e. the value that occurs most often. + bool medianAll() const; + + /// @brief Computes the median value of all the active voxels in this node. + /// @return The number of active voxels. + /// + /// @param value Updated with the median value of all the active voxels. + /// + /// @note Since the value and state are shared for this + /// specialization of the LeafNode the @a value will always be true! + Index medianOn(ValueType &value) const; + + /// @brief Computes the median value of all the inactive voxels in this node. + /// @return The number of inactive voxels. + /// + /// @param value Updated with the median value of all the inactive + /// voxels. + /// + /// @note Since the value and state are shared for this + /// specialization of the LeafNode the @a value will always be false! + Index medianOff(ValueType &value) const; + + /// Return @c true if all of this node's values are inactive. + bool isInactive() const { return mBuffer.mData.isOff(); } + + /// @brief no-op since for this temaplte specialization voxel + /// values and states are indistinguishable. + void resetBackground(bool, bool) {} + + /// @brief Invert the bits of the voxels, i.e. states and values + void negate() { mBuffer.mData.toggle(); } + + template + void merge(const LeafNode& other, bool bg = false, bool otherBG = false); + template void merge(bool tileValue, bool tileActive=false); + + /// @brief No-op + /// @details This function exists only to enable template instantiation. + void voxelizeActiveTiles(bool = true) {} + + /// @brief Union this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active if either of the original voxels + /// were active. + /// + /// @note This operation modifies only active states, not values. + template + void topologyUnion(const LeafNode& other); + + /// @brief Intersect this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if both of the original voxels + /// were active. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyIntersection. + /// + /// @note This operation modifies only active states, not + /// values. Also note that this operation can result in all voxels + /// being inactive so consider subsequnetly calling prune. + template + void topologyIntersection(const LeafNode& other, const bool&); + + /// @brief Difference this node's set of active values with the active values + /// of the other node, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this LeafNode and inactive in the other LeafNode. + /// + /// @details The last dummy argument is required to match the signature + /// for InternalNode::topologyDifference. + /// + /// @note This operation modifies only active states, not values. + /// Also, because it can deactivate all of this node's voxels, + /// consider subsequently calling prune. + template + void topologyDifference(const LeafNode& other, const bool&); + + template + void combine(const LeafNode& other, CombineOp& op); + template + void combine(bool, bool valueIsActive, CombineOp& op); + + template + void combine2(const LeafNode& other, const OtherType&, bool valueIsActive, CombineOp&); + template + void combine2(bool, const OtherNodeT& other, bool valueIsActive, CombineOp&); + template + void combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp&); + + /// @brief Calls the templated functor BBoxOp with bounding box information. + /// An additional level argument is provided to the callback. + /// + /// @note The bounding boxes are guarenteed to be non-overlapping. + template void visitActiveBBox(BBoxOp&) const; + + template void visit(VisitorOp&); + template void visit(VisitorOp&) const; + + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&); + template + void visit2Node(OtherLeafNodeType& other, VisitorOp&) const; + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false); + template + void visit2(IterT& otherIter, VisitorOp&, bool otherIsLHS = false) const; + + //@{ + /// This function exists only to enable template instantiation. + void prune(const ValueType& /*tolerance*/ = zeroVal()) {} + void addLeaf(LeafNode*) {} + template + void addLeafAndCache(LeafNode*, AccessorT&) {} + template + NodeT* stealNode(const Coord&, const ValueType&, bool) { return nullptr; } + template + NodeT* probeNode(const Coord&) { return nullptr; } + template + const NodeT* probeConstNode(const Coord&) const { return nullptr; } + template void getNodes(ArrayT&) const {} + template void stealNodes(ArrayT&, const ValueType&, bool) {} + //@} + + void addTile(Index level, const Coord&, bool val, bool active); + void addTile(Index offset, bool val, bool active); + template + void addTileAndCache(Index level, const Coord&, bool val, bool active, AccessorT&); + + //@{ + /// @brief Return a pointer to this node. + LeafNode* touchLeaf(const Coord&) { return this; } + template + LeafNode* touchLeafAndCache(const Coord&, AccessorT&) { return this; } + LeafNode* probeLeaf(const Coord&) { return this; } + template + LeafNode* probeLeafAndCache(const Coord&, AccessorT&) { return this; } + template + NodeT* probeNodeAndCache(const Coord&, AccessorT&) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + //@{ + /// @brief Return a @const pointer to this node. + const LeafNode* probeLeaf(const Coord&) const { return this; } + template + const LeafNode* probeLeafAndCache(const Coord&, AccessorT&) const { return this; } + const LeafNode* probeConstLeaf(const Coord&) const { return this; } + template + const LeafNode* probeConstLeafAndCache(const Coord&, AccessorT&) const { return this; } + template + const NodeT* probeConstNodeAndCache(const Coord&, AccessorT&) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (!(std::is_same::value)) return nullptr; + return reinterpret_cast(this); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + //@} + + // + // Iterators + // +protected: + using MaskOnIter = typename NodeMaskType::OnIterator; + using MaskOffIter = typename NodeMaskType::OffIterator; + using MaskDenseIter = typename NodeMaskType::DenseIterator; + + template + struct ValueIter: + // Derives from SparseIteratorBase, but can also be used as a dense iterator, + // if MaskIterT is a dense mask iterator type. + public SparseIteratorBase, NodeT, ValueT> + { + using BaseT = SparseIteratorBase; + + ValueIter() {} + ValueIter(const MaskIterT& iter, NodeT* parent): BaseT(iter, parent) {} + + const bool& getItem(Index pos) const { return this->parent().getValue(pos); } + const bool& getValue() const { return this->getItem(this->pos()); } + + // Note: setItem() can't be called on const iterators. + void setItem(Index pos, bool value) const { this->parent().setValueOnly(pos, value); } + // Note: setValue() can't be called on const iterators. + void setValue(bool value) const { this->setItem(this->pos(), value); } + + // Note: modifyItem() can't be called on const iterators. + template + void modifyItem(Index n, const ModifyOp& op) const { this->parent().modifyValue(n, op); } + // Note: modifyValue() can't be called on const iterators. + template + void modifyValue(const ModifyOp& op) const { this->modifyItem(this->pos(), op); } + }; + + /// Leaf nodes have no children, so their child iterators have no get/set accessors. + template + struct ChildIter: + public SparseIteratorBase, NodeT, bool> + { + ChildIter() {} + ChildIter(const MaskIterT& iter, NodeT* parent): SparseIteratorBase< + MaskIterT, ChildIter, NodeT, bool>(iter, parent) {} + }; + + template + struct DenseIter: public DenseIteratorBase< + MaskDenseIter, DenseIter, NodeT, /*ChildT=*/void, ValueT> + { + using BaseT = DenseIteratorBase; + using NonConstValueT = typename BaseT::NonConstValueType; + + DenseIter() {} + DenseIter(const MaskDenseIter& iter, NodeT* parent): BaseT(iter, parent) {} + + bool getItem(Index pos, void*& child, NonConstValueT& value) const + { + value = this->parent().getValue(pos); + child = nullptr; + return false; // no child + } + + // Note: setItem() can't be called on const iterators. + //void setItem(Index pos, void* child) const {} + + // Note: unsetItem() can't be called on const iterators. + void unsetItem(Index pos, const ValueT& val) const {this->parent().setValueOnly(pos, val);} + }; + +public: + using ValueOnIter = ValueIter; + using ValueOnCIter = ValueIter; + using ValueOffIter = ValueIter; + using ValueOffCIter = ValueIter; + using ValueAllIter = ValueIter; + using ValueAllCIter = ValueIter; + using ChildOnIter = ChildIter; + using ChildOnCIter = ChildIter; + using ChildOffIter = ChildIter; + using ChildOffCIter = ChildIter; + using ChildAllIter = DenseIter; + using ChildAllCIter = DenseIter; + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(mBuffer.mData.beginOn(), this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(mBuffer.mData.beginOn(), this); } + ValueOnIter beginValueOn() { return ValueOnIter(mBuffer.mData.beginOn(), this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(mBuffer.mData.beginOff(), this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(mBuffer.mData.beginOff(), this); } + ValueOffIter beginValueOff() { return ValueOffIter(mBuffer.mData.beginOff(), this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(mBuffer.mData.beginDense(), this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(mBuffer.mData.beginDense(), this); } + ValueAllIter beginValueAll() { return ValueAllIter(mBuffer.mData.beginDense(), this); } + + ValueOnCIter cendValueOn() const { return ValueOnCIter(mBuffer.mData.endOn(), this); } + ValueOnCIter endValueOn() const { return ValueOnCIter(mBuffer.mData.endOn(), this); } + ValueOnIter endValueOn() { return ValueOnIter(mBuffer.mData.endOn(), this); } + ValueOffCIter cendValueOff() const { return ValueOffCIter(mBuffer.mData.endOff(), this); } + ValueOffCIter endValueOff() const { return ValueOffCIter(mBuffer.mData.endOff(), this); } + ValueOffIter endValueOff() { return ValueOffIter(mBuffer.mData.endOff(), this); } + ValueAllCIter cendValueAll() const { return ValueAllCIter(mBuffer.mData.endDense(), this); } + ValueAllCIter endValueAll() const { return ValueAllCIter(mBuffer.mData.endDense(), this); } + ValueAllIter endValueAll() { return ValueAllIter(mBuffer.mData.endDense(), this); } + + // Note that [c]beginChildOn() and [c]beginChildOff() actually return end iterators, + // because leaf nodes have no children. + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(mBuffer.mData.endOn(), this); } + ChildOnCIter beginChildOn() const { return ChildOnCIter(mBuffer.mData.endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(mBuffer.mData.endOn(), this); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(mBuffer.mData.endOff(), this); } + ChildOffCIter beginChildOff() const { return ChildOffCIter(mBuffer.mData.endOff(), this); } + ChildOffIter beginChildOff() { return ChildOffIter(mBuffer.mData.endOff(), this); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(mBuffer.mData.beginDense(), this); } + ChildAllCIter beginChildAll() const { return ChildAllCIter(mBuffer.mData.beginDense(), this); } + ChildAllIter beginChildAll() { return ChildAllIter(mBuffer.mData.beginDense(), this); } + + ChildOnCIter cendChildOn() const { return ChildOnCIter(mBuffer.mData.endOn(), this); } + ChildOnCIter endChildOn() const { return ChildOnCIter(mBuffer.mData.endOn(), this); } + ChildOnIter endChildOn() { return ChildOnIter(mBuffer.mData.endOn(), this); } + ChildOffCIter cendChildOff() const { return ChildOffCIter(mBuffer.mData.endOff(), this); } + ChildOffCIter endChildOff() const { return ChildOffCIter(mBuffer.mData.endOff(), this); } + ChildOffIter endChildOff() { return ChildOffIter(mBuffer.mData.endOff(), this); } + ChildAllCIter cendChildAll() const { return ChildAllCIter(mBuffer.mData.endDense(), this); } + ChildAllCIter endChildAll() const { return ChildAllCIter(mBuffer.mData.endDense(), this); } + ChildAllIter endChildAll() { return ChildAllIter(mBuffer.mData.endDense(), this); } + + // + // Mask accessors + // + bool isValueMaskOn(Index n) const { return mBuffer.mData.isOn(n); } + bool isValueMaskOn() const { return mBuffer.mData.isOn(); } + bool isValueMaskOff(Index n) const { return mBuffer.mData.isOff(n); } + bool isValueMaskOff() const { return mBuffer.mData.isOff(); } + const NodeMaskType& getValueMask() const { return mBuffer.mData; } + const NodeMaskType& valueMask() const { return mBuffer.mData; } + NodeMaskType& getValueMask() { return mBuffer.mData; } + void setValueMask(const NodeMaskType& mask) { mBuffer.mData = mask; } + bool isChildMaskOn(Index) const { return false; } // leaf nodes have no children + bool isChildMaskOff(Index) const { return true; } + bool isChildMaskOff() const { return true; } +protected: + void setValueMask(Index n, bool on) { mBuffer.mData.set(n, on); } + void setValueMaskOn(Index n) { mBuffer.mData.setOn(n); } + void setValueMaskOff(Index n) { mBuffer.mData.setOff(n); } + + /// Compute the origin of the leaf node that contains the voxel with the given coordinates. + static void evalNodeOrigin(Coord& xyz) { xyz &= ~(DIM - 1); } + + template + static inline void doVisit(NodeT&, VisitorOp&); + + template + static inline void doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp&); + + template + static inline void doVisit2(NodeT& self, OtherChildAllIterT&, VisitorOp&, bool otherIsLHS); + + /// Bitmask representing the values AND state of voxels + Buffer mBuffer; + + /// Global grid index coordinates (x,y,z) of the local origin of this node + Coord mOrigin; + +private: + /// @brief During topology-only construction, access is needed + /// to protected/private members of other template instances. + template friend class LeafNode; + + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + friend struct ValueIter; + + //@{ + /// Allow iterators to call mask accessor methods (see below). + /// @todo Make mask accessors public? + friend class IteratorBase; + friend class IteratorBase; + friend class IteratorBase; + //@} + + template friend class LeafBuffer; + +}; // class LeafNode + + +//////////////////////////////////////// + + +template +inline +LeafNode::LeafNode() + : mOrigin(0, 0, 0) +{ +} + +template +inline +LeafNode::LeafNode(const Coord& xyz, bool value, bool active) + : mBuffer(value || active) + , mOrigin(xyz & (~(DIM - 1))) +{ +} + + +template +inline +LeafNode::LeafNode(PartialCreate, const Coord& xyz, bool value, bool active) + : mBuffer(value || active) + , mOrigin(xyz & (~(DIM - 1))) +{ +} + + +template +inline +LeafNode::LeafNode(const LeafNode &other) + : mBuffer(other.mBuffer) + , mOrigin(other.mOrigin) +{ +} + + +// Copy-construct from a leaf node with the same configuration but a different ValueType. +template +template +inline +LeafNode::LeafNode(const LeafNode& other) + : mBuffer(other.valueMask()) + , mOrigin(other.origin()) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + bool, TopologyCopy) + : mBuffer(other.valueMask())// value = active state + , mOrigin(other.origin()) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, TopologyCopy) + : mBuffer(other.valueMask())// value = active state + , mOrigin(other.origin()) +{ +} + + +template +template +inline +LeafNode::LeafNode(const LeafNode& other, + bool offValue, bool onValue, TopologyCopy) + : mBuffer(other.valueMask()) + , mOrigin(other.origin()) +{ + if (offValue==true) { + if (onValue==false) { + mBuffer.mData.toggle(); + } else { + mBuffer.mData.setOn(); + } + } +} + + +template +inline +LeafNode::~LeafNode() +{ +} + + +//////////////////////////////////////// + + +template +inline Index64 +LeafNode::memUsage() const +{ + // Use sizeof(*this) to capture alignment-related padding + return sizeof(*this); +} + + +template +inline void +LeafNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + CoordBBox this_bbox = this->getNodeBoundingBox(); + if (bbox.isInside(this_bbox)) return;//this LeafNode is already enclosed in the bbox + if (ValueOnCIter iter = this->cbeginValueOn()) {//any active values? + if (visitVoxels) {//use voxel granularity? + this_bbox.reset(); + for(; iter; ++iter) this_bbox.expand(this->offsetToLocalCoord(iter.pos())); + this_bbox.translate(this->origin()); + } + bbox.expand(this_bbox); + } +} + + +template +template +inline bool +LeafNode::hasSameTopology(const LeafNode* other) const +{ + assert(other); + return (Log2Dim == OtherLog2Dim && mBuffer.mData == other->getValueMask()); +} + + +template +inline std::string +LeafNode::str() const +{ + std::ostringstream ostr; + ostr << "LeafNode @" << mOrigin << ": "; + for (Index32 n = 0; n < SIZE; ++n) ostr << (mBuffer.mData.isOn(n) ? '#' : '.'); + return ostr.str(); +} + + +//////////////////////////////////////// + + +template +inline Index +LeafNode::coordToOffset(const Coord& xyz) +{ + assert ((xyz[0] & (DIM-1u)) < DIM && (xyz[1] & (DIM-1u)) < DIM && (xyz[2] & (DIM-1u)) < DIM); + return ((xyz[0] & (DIM-1u)) << 2*Log2Dim) + + ((xyz[1] & (DIM-1u)) << Log2Dim) + + (xyz[2] & (DIM-1u)); +} + + +template +inline Coord +LeafNode::offsetToLocalCoord(Index n) +{ + assert(n < (1 << 3*Log2Dim)); + Coord xyz; + xyz.setX(n >> 2*Log2Dim); + n &= ((1 << 2*Log2Dim) - 1); + xyz.setY(n >> Log2Dim); + xyz.setZ(n & ((1 << Log2Dim) - 1)); + return xyz; +} + + +template +inline Coord +LeafNode::offsetToGlobalCoord(Index n) const +{ + return (this->offsetToLocalCoord(n) + this->origin()); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::readTopology(std::istream& is, bool /*fromHalf*/) +{ + mBuffer.mData.load(is); +} + + +template +inline void +LeafNode::writeTopology(std::ostream& os, bool /*toHalf*/) const +{ + mBuffer.mData.save(os); +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, const CoordBBox& clipBBox, bool fromHalf) +{ + // Boolean LeafNodes don't currently implement lazy loading. + // Instead, load the full buffer, then clip it. + + this->readBuffers(is, fromHalf); + + // Get this tree's background value. + bool background = false; + if (const void* bgPtr = io::getGridBackgroundValuePtr(is)) { + background = *static_cast(bgPtr); + } + this->clip(clipBBox, background); +} + + +template +inline void +LeafNode::readBuffers(std::istream& is, bool /*fromHalf*/) +{ + // Read in the value mask = buffer. + mBuffer.mData.load(is); + // Read in the origin. + is.read(reinterpret_cast(&mOrigin), sizeof(Coord::ValueType) * 3); +} + + +template +inline void +LeafNode::writeBuffers(std::ostream& os, bool /*toHalf*/) const +{ + // Write out the value mask = buffer. + mBuffer.mData.save(os); + // Write out the origin. + os.write(reinterpret_cast(&mOrigin), sizeof(Coord::ValueType) * 3); +} + + +//////////////////////////////////////// + + +template +inline bool +LeafNode::operator==(const LeafNode& other) const +{ + return mOrigin == other.mOrigin && mBuffer == other.mBuffer; +} + + +template +inline bool +LeafNode::operator!=(const LeafNode& other) const +{ + return !(this->operator==(other)); +} + + +//////////////////////////////////////// + + +template +inline bool +LeafNode::isConstant(bool& constValue, bool& state, bool) const +{ + if (!mBuffer.mData.isConstant(state)) return false; + + constValue = state; + return true; +} + + +//////////////////////////////////////// + +template +inline bool +LeafNode::medianAll() const +{ + const Index countTrue = mBuffer.mData.countOn(); + return countTrue > (NUM_VALUES >> 1); +} + +template +inline Index +LeafNode::medianOn(bool& state) const +{ + const Index countTrueOn = mBuffer.mData.countOn(); + state = true;//since value and state are the same for this specialization of the leaf node + return countTrueOn; +} + +template +inline Index +LeafNode::medianOff(bool& state) const +{ + const Index countFalseOff = mBuffer.mData.countOff(); + state = false;//since value and state are the same for this specialization of the leaf node + return countFalseOff; +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::addTile(Index /*level*/, const Coord& xyz, bool val, bool active) +{ + this->addTile(this->coordToOffset(xyz), val, active); +} + +template +inline void +LeafNode::addTile(Index offset, bool val, bool active) +{ + assert(offset < SIZE); + this->setValueOnly(offset, val); + this->setActiveState(offset, active); +} + +template +template +inline void +LeafNode::addTileAndCache(Index level, const Coord& xyz, + bool val, bool active, AccessorT&) +{ + this->addTile(level, xyz, val, active); +} + + +//////////////////////////////////////// + + +template +inline const bool& +LeafNode::getValue(const Coord& xyz) const +{ + // This *CANNOT* use operator ? because Visual C++ + if (mBuffer.mData.isOn(this->coordToOffset(xyz))) return Buffer::sOn; else return Buffer::sOff; +} + + +template +inline const bool& +LeafNode::getValue(Index offset) const +{ + assert(offset < SIZE); + // This *CANNOT* use operator ? for Windows + if (mBuffer.mData.isOn(offset)) return Buffer::sOn; else return Buffer::sOff; +} + + +template +inline bool +LeafNode::probeValue(const Coord& xyz, bool& val) const +{ + const Index offset = this->coordToOffset(xyz); + val = mBuffer.mData.isOn(offset); + return val; +} + + +template +inline void +LeafNode::setValueOn(const Coord& xyz, bool val) +{ + this->setValueOn(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setValueOn(Index offset, bool val) +{ + assert(offset < SIZE); + mBuffer.mData.set(offset, val); +} + + +template +inline void +LeafNode::setValueOnly(const Coord& xyz, bool val) +{ + this->setValueOnly(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setActiveState(const Coord& xyz, bool on) +{ + mBuffer.mData.set(this->coordToOffset(xyz), on); +} + + +template +inline void +LeafNode::setValueOff(const Coord& xyz, bool val) +{ + this->setValueOff(this->coordToOffset(xyz), val); +} + + +template +inline void +LeafNode::setValueOff(Index offset, bool val) +{ + assert(offset < SIZE); + mBuffer.mData.set(offset, val); +} + + +template +template +inline void +LeafNode::modifyValue(Index offset, const ModifyOp& op) +{ + bool val = mBuffer.mData.isOn(offset); + op(val); + mBuffer.mData.set(offset, val); +} + + +template +template +inline void +LeafNode::modifyValue(const Coord& xyz, const ModifyOp& op) +{ + this->modifyValue(this->coordToOffset(xyz), op); +} + + +template +template +inline void +LeafNode::modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) +{ + const Index offset = this->coordToOffset(xyz); + bool val = mBuffer.mData.isOn(offset), state = val; + op(val, state); + mBuffer.mData.set(offset, val); +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::merge(const LeafNode& other, bool /*bg*/, bool /*otherBG*/) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy == MERGE_NODES) return; + mBuffer.mData |= other.mBuffer.mData; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + +template +template +inline void +LeafNode::merge(bool tileValue, bool) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (Policy != MERGE_ACTIVE_STATES_AND_NODES) return; + if (tileValue) mBuffer.mData.setOn(); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::topologyUnion(const LeafNode& other) +{ + mBuffer.mData |= other.valueMask(); +} + + +template +template +inline void +LeafNode::topologyIntersection(const LeafNode& other, + const bool&) +{ + mBuffer.mData &= other.valueMask(); +} + + +template +template +inline void +LeafNode::topologyDifference(const LeafNode& other, + const bool&) +{ + mBuffer.mData &= !other.valueMask(); +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::clip(const CoordBBox& clipBBox, bool background) +{ + CoordBBox nodeBBox = this->getNodeBoundingBox(); + if (!clipBBox.hasOverlap(nodeBBox)) { + // This node lies completely outside the clipping region. Fill it with background tiles. + this->fill(nodeBBox, background, /*active=*/false); + } else if (clipBBox.isInside(nodeBBox)) { + // This node lies completely inside the clipping region. Leave it intact. + return; + } + + // This node isn't completely contained inside the clipping region. + // Set any voxels that lie outside the region to the background value. + + // Construct a boolean mask that is on inside the clipping region and off outside it. + NodeMaskType mask; + nodeBBox.intersect(clipBBox); + Coord xyz; + int &x = xyz.x(), &y = xyz.y(), &z = xyz.z(); + for (x = nodeBBox.min().x(); x <= nodeBBox.max().x(); ++x) { + for (y = nodeBBox.min().y(); y <= nodeBBox.max().y(); ++y) { + for (z = nodeBBox.min().z(); z <= nodeBBox.max().z(); ++z) { + mask.setOn(static_cast(this->coordToOffset(xyz))); + } + } + } + + // Set voxels that lie in the inactive region of the mask (i.e., outside + // the clipping region) to the background value. + for (MaskOffIter maskIter = mask.beginOff(); maskIter; ++maskIter) { + this->setValueOff(maskIter.pos(), background); + } +} + + +//////////////////////////////////////// + + +template +inline void +LeafNode::fill(const CoordBBox& bbox, bool value, bool) +{ + auto clippedBBox = this->getNodeBoundingBox(); + clippedBBox.intersect(bbox); + if (!clippedBBox) return; + + for (Int32 x = clippedBBox.min().x(); x <= clippedBBox.max().x(); ++x) { + const Index offsetX = (x & (DIM-1u))<<2*Log2Dim; + for (Int32 y = clippedBBox.min().y(); y <= clippedBBox.max().y(); ++y) { + const Index offsetXY = offsetX + ((y & (DIM-1u))<< Log2Dim); + for (Int32 z = clippedBBox.min().z(); z <= clippedBBox.max().z(); ++z) { + const Index offset = offsetXY + (z & (DIM-1u)); + mBuffer.mData.set(offset, value); + } + } + } +} + +template +inline void +LeafNode::fill(const bool& value, bool) +{ + mBuffer.fill(value); +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::copyToDense(const CoordBBox& bbox, DenseT& dense) const +{ + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + DenseValueType* t0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // target array + const Int32 n0 = bbox.min()[2] & (DIM-1u); + for (Int32 x = bbox.min()[0], ex = bbox.max()[0] + 1; x < ex; ++x) { + DenseValueType* t1 = t0 + xStride * (x - min[0]); + const Int32 n1 = n0 + ((x & (DIM-1u)) << 2*LOG2DIM); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1] + 1; y < ey; ++y) { + DenseValueType* t2 = t1 + yStride * (y - min[1]); + Int32 n2 = n1 + ((y & (DIM-1u)) << LOG2DIM); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2] + 1; z < ez; ++z, t2 += zStride) { + *t2 = DenseValueType(mBuffer.mData.isOn(n2++)); + } + } + } +} + + +template +template +inline void +LeafNode::copyFromDense(const CoordBBox& bbox, const DenseT& dense, + bool background, bool tolerance) +{ + using DenseValueType = typename DenseT::ValueType; + struct Local { + inline static bool toBool(const DenseValueType& v) { return !math::isZero(v); } + }; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + const DenseValueType* s0 = dense.data() + zStride * (bbox.min()[2] - min[2]); // source + const Int32 n0 = bbox.min()[2] & (DIM-1u); + for (Int32 x = bbox.min()[0], ex = bbox.max()[0] + 1; x < ex; ++x) { + const DenseValueType* s1 = s0 + xStride * (x - min[0]); + const Int32 n1 = n0 + ((x & (DIM-1u)) << 2*LOG2DIM); + for (Int32 y = bbox.min()[1], ey = bbox.max()[1] + 1; y < ey; ++y) { + const DenseValueType* s2 = s1 + yStride * (y - min[1]); + Int32 n2 = n1 + ((y & (DIM-1u)) << LOG2DIM); + for (Int32 z = bbox.min()[2], ez = bbox.max()[2]+1; z < ez; ++z, ++n2, s2 += zStride) { + // Note: if tolerance is true (i.e., 1), then all boolean values compare equal. + if (tolerance || (background == Local::toBool(*s2))) { + mBuffer.mData.set(n2, background); + } else { + mBuffer.mData.set(n2, Local::toBool(*s2)); + } + } + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine(const LeafNode& other, CombineOp& op) +{ + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = mBuffer.mData.isOn(i), bVal = other.mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(aVal) + .setBRef(bVal) + .setBIsActive(bVal) + .setResultRef(result)); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine(bool value, bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(aVal) + .setResultRef(result)); + mBuffer.mData.set(i, result); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::combine2(const LeafNode& other, const OtherType& value, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setBRef(value).setBIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, aVal = other.mBuffer.mData.isOn(i); + op(args.setARef(aVal) + .setAIsActive(aVal) + .setResultRef(result)); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine2(bool value, const OtherNodeT& other, + bool valueIsActive, CombineOp& op) +{ + CombineArgs args; + args.setARef(value).setAIsActive(valueIsActive); + for (Index i = 0; i < SIZE; ++i) { + bool result = false, bVal = other.mBuffer.mData.isOn(i); + op(args.setBRef(bVal) + .setBIsActive(bVal) + .setResultRef(result)); + mBuffer.mData.set(i, result); + } +} + + +template +template +inline void +LeafNode::combine2(const LeafNode& b0, const OtherNodeT& b1, CombineOp& op) +{ + CombineArgs args; + for (Index i = 0; i < SIZE; ++i) { + bool result = false, b0Val = b0.mBuffer.mData.isOn(i), b1Val = b1.mBuffer.mData.isOn(i); + op(args.setARef(b0Val) + .setAIsActive(b0Val) + .setBRef(b1Val) + .setBIsActive(b1Val) + .setResultRef(result)); + mBuffer.mData.set(i, result); + } +} + + +//////////////////////////////////////// + +template +template +inline void +LeafNode::visitActiveBBox(BBoxOp& op) const +{ + if (op.template descent()) { + for (ValueOnCIter i=this->cbeginValueOn(); i; ++i) { +#ifdef _MSC_VER + op.operator()(CoordBBox::createCube(i.getCoord(), 1)); +#else + op.template operator()(CoordBBox::createCube(i.getCoord(), 1)); +#endif + } + } else { +#ifdef _MSC_VER + op.operator()(this->getNodeBoundingBox()); +#else + op.template operator()(this->getNodeBoundingBox()); +#endif + } +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::visit(VisitorOp& op) const +{ + doVisit(*this, op); +} + + +template +template +inline void +LeafNode::doVisit(NodeT& self, VisitorOp& op) +{ + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) +{ + doVisit2Node(*this, other, op); +} + + +template +template +inline void +LeafNode::visit2Node(OtherLeafNodeType& other, VisitorOp& op) const +{ + doVisit2Node(*this, other, op); +} + + +template +template< + typename NodeT, + typename OtherNodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2Node(NodeT& self, OtherNodeT& other, VisitorOp& op) +{ + // Allow the two nodes to have different ValueTypes, but not different dimensions. + static_assert(OtherNodeT::SIZE == NodeT::SIZE, + "can't visit nodes of different sizes simultaneously"); + static_assert(OtherNodeT::LEVEL == NodeT::LEVEL, + "can't visit nodes at different tree levels simultaneously"); + + ChildAllIterT iter = self.beginChildAll(); + OtherChildAllIterT otherIter = other.beginChildAll(); + + for ( ; iter && otherIter; ++iter, ++otherIter) { + op(iter, otherIter); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) +{ + doVisit2(*this, otherIter, op, otherIsLHS); +} + + +template +template +inline void +LeafNode::visit2(IterT& otherIter, VisitorOp& op, bool otherIsLHS) const +{ + doVisit2(*this, otherIter, op, otherIsLHS); +} + + +template +template< + typename NodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +LeafNode::doVisit2(NodeT& self, OtherChildAllIterT& otherIter, + VisitorOp& op, bool otherIsLHS) +{ + if (!otherIter) return; + + if (otherIsLHS) { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(otherIter, iter); + } + } else { + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + op(iter, otherIter); + } + } +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_LEAF_NODE_MASK_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/NodeManager.h b/openvdb/tree/NodeManager.h new file mode 100644 index 00000000..8cca7f25 --- /dev/null +++ b/openvdb/tree/NodeManager.h @@ -0,0 +1,1017 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tree/NodeManager.h +/// +/// @author Ken Museth +/// +/// @brief NodeManager produces linear arrays of all tree nodes +/// allowing for efficient threading and bottom-up processing. +/// +/// @note A NodeManager can be constructed from a Tree or LeafManager. +/// The latter is slightly more efficient since the cached leaf nodes will be reused. + +#ifndef OPENVDB_TREE_NODEMANAGER_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_NODEMANAGER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +// Produce linear arrays of all tree nodes, to facilitate efficient threading +// and bottom-up processing. +template +class NodeManager; + + +//////////////////////////////////////// + + +/// @brief This class caches tree nodes of a specific type in a linear array. +/// +/// @note It is for internal use and should rarely be used directly. +template +class NodeList +{ +public: + using value_type = NodeT*; + using ListT = std::deque; + + NodeList() {} + + void push_back(NodeT* node) { mList.push_back(node); } + + NodeT& operator()(size_t n) const { assert(nsize();} + + class Iterator + { + public: + Iterator(const NodeRange& range, size_t pos): mRange(range), mPos(pos) + { + assert(this->isValid()); + } + Iterator(const Iterator&) = default; + Iterator& operator=(const Iterator&) = default; + /// Advance to the next node. + Iterator& operator++() { ++mPos; return *this; } + /// Return a reference to the node to which this iterator is pointing. + NodeT& operator*() const { return mRange.mNodeList(mPos); } + /// Return a pointer to the node to which this iterator is pointing. + NodeT* operator->() const { return &(this->operator*()); } + /// Return the index into the list of the current node. + size_t pos() const { return mPos; } + bool isValid() const { return mPos>=mRange.mBegin && mPos<=mRange.mEnd; } + /// Return @c true if this iterator is not yet exhausted. + bool test() const { return mPos < mRange.mEnd; } + /// Return @c true if this iterator is not yet exhausted. + operator bool() const { return this->test(); } + /// Return @c true if this iterator is exhausted. + bool empty() const { return !this->test(); } + bool operator!=(const Iterator& other) const + { + return (mPos != other.mPos) || (&mRange != &other.mRange); + } + bool operator==(const Iterator& other) const { return !(*this != other); } + const NodeRange& nodeRange() const { return mRange; } + + private: + const NodeRange& mRange; + size_t mPos; + };// NodeList::NodeRange::Iterator + + Iterator begin() const {return Iterator(*this, mBegin);} + + Iterator end() const {return Iterator(*this, mEnd);} + + private: + size_t mEnd, mBegin, mGrainSize; + const NodeList& mNodeList; + + static size_t doSplit(NodeRange& r) + { + assert(r.is_divisible()); + size_t middle = r.mBegin + (r.mEnd - r.mBegin) / 2u; + r.mEnd = middle; + return middle; + } + };// NodeList::NodeRange + + /// Return a TBB-compatible NodeRange. + NodeRange nodeRange(size_t grainsize = 1) const + { + return NodeRange(0, this->nodeCount(), *this, grainsize); + } + + template + void foreach(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + NodeTransformer transform(op); + transform.run(this->nodeRange(grainSize), threaded); + } + + template + void reduce(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + NodeReducer transform(op); + transform.run(this->nodeRange(grainSize), threaded); + } + +private: + + // Private struct of NodeList that performs parallel_for + template + struct NodeTransformer + { + NodeTransformer(const NodeOp& nodeOp) : mNodeOp(nodeOp) + { + } + void run(const NodeRange& range, bool threaded = true) + { + threaded ? tbb::parallel_for(range, *this) : (*this)(range); + } + void operator()(const NodeRange& range) const + { + for (typename NodeRange::Iterator it = range.begin(); it; ++it) mNodeOp(*it); + } + const NodeOp mNodeOp; + };// NodeList::NodeTransformer + + // Private struct of NodeList that performs parallel_reduce + template + struct NodeReducer + { + NodeReducer(NodeOp& nodeOp) : mNodeOp(&nodeOp), mOwnsOp(false) + { + } + NodeReducer(const NodeReducer& other, tbb::split) : + mNodeOp(new NodeOp(*(other.mNodeOp), tbb::split())), mOwnsOp(true) + { + } + ~NodeReducer() { if (mOwnsOp) delete mNodeOp; } + void run(const NodeRange& range, bool threaded = true) + { + threaded ? tbb::parallel_reduce(range, *this) : (*this)(range); + } + void operator()(const NodeRange& range) + { + NodeOp &op = *mNodeOp; + for (typename NodeRange::Iterator it = range.begin(); it; ++it) op(*it); + } + void join(const NodeReducer& other) + { + mNodeOp->join(*(other.mNodeOp)); + } + NodeOp *mNodeOp; + const bool mOwnsOp; + };// NodeList::NodeReducer + + +protected: + ListT mList; +};// NodeList + + +///////////////////////////////////////////// + + +/// @brief This class is a link in a chain that each caches tree nodes +/// of a specific type in a linear array. +/// +/// @note It is for internal use and should rarely be used directly. +template +class NodeManagerLink +{ +public: + NodeManagerLink() {} + + virtual ~NodeManagerLink() {} + + void clear() { mList.clear(); mNext.clear(); } + + template + void init(ParentT& parent, TreeOrLeafManagerT& tree) + { + parent.getNodes(mList); + for (size_t i=0, n=mList.nodeCount(); i + void rebuild(ParentT& parent) + { + mList.clear(); + parent.getNodes(mList); + for (size_t i=0, n=mList.nodeCount(); i + void foreachBottomUp(const NodeOp& op, bool threaded, size_t grainSize) + { + mNext.foreachBottomUp(op, threaded, grainSize); + mList.foreach(op, threaded, grainSize); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded, size_t grainSize) + { + mList.foreach(op, threaded, grainSize); + mNext.foreachTopDown(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded, size_t grainSize) + { + mNext.reduceBottomUp(op, threaded, grainSize); + mList.reduce(op, threaded, grainSize); + } + + template + void reduceTopDown(NodeOp& op, bool threaded, size_t grainSize) + { + mList.reduce(op, threaded, grainSize); + mNext.reduceTopDown(op, threaded, grainSize); + } + +protected: + NodeList mList; + NodeManagerLink mNext; +};// NodeManagerLink class + + +//////////////////////////////////////// + + +/// @private +/// @brief Specialization that terminates the chain of cached tree nodes +/// @note It is for internal use and should rarely be used directly. +template +class NodeManagerLink +{ +public: + NodeManagerLink() {} + + virtual ~NodeManagerLink() {} + + /// @brief Clear all the cached tree nodes + void clear() { mList.clear(); } + + template + void rebuild(ParentT& parent) { mList.clear(); parent.getNodes(mList); } + + Index64 nodeCount() const { return mList.nodeCount(); } + + Index64 nodeCount(Index) const { return mList.nodeCount(); } + + template + void foreachBottomUp(const NodeOp& op, bool threaded, size_t grainSize) + { + mList.foreach(op, threaded, grainSize); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded, size_t grainSize) + { + mList.foreach(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded, size_t grainSize) + { + mList.reduce(op, threaded, grainSize); + } + + template + void reduceTopDown(NodeOp& op, bool threaded, size_t grainSize) + { + mList.reduce(op, threaded, grainSize); + } + + template + void init(ParentT& parent, TreeOrLeafManagerT& tree) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (TreeOrLeafManagerT::DEPTH == 2 && NodeT::LEVEL == 0) { + tree.getNodes(mList); + } else { + parent.getNodes(mList); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } +protected: + NodeList mList; +};// NodeManagerLink class + + +//////////////////////////////////////// + + +/// @brief To facilitate threading over the nodes of a tree, cache +/// node pointers in linear arrays, one for each level of the tree. +/// +/// @details This implementation works with trees of any depth, but +/// optimized specializations are provided for the most typical tree depths. +template +class NodeManager +{ +public: + static const Index LEVELS = _LEVELS; + static_assert(LEVELS > 0, + "expected instantiation of template specialization"); // see specialization below + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static_assert(RootNodeType::LEVEL >= LEVELS, "number of levels exceeds root node height"); + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) { mChain.init(mRoot, tree); } + + virtual ~NodeManager() {} + + /// @brief Clear all the cached tree nodes + void clear() { mChain.clear(); } + + /// @brief Clear and recache all the tree nodes from the + /// tree. This is required if tree nodes have been added or removed. + void rebuild() { mChain.rebuild(mRoot); } + + /// @brief Return a reference to the root node. + const RootNodeType& root() const { return mRoot; } + + /// @brief Return the total number of cached nodes (excluding the root node) + Index64 nodeCount() const { return mChain.nodeCount(); } + + /// @brief Return the number of cached nodes at level @a i, where + /// 0 corresponds to the lowest level. + Index64 nodeCount(Index i) const { return mChain.nodeCount(i); } + + //@{ + /// @brief Threaded method that applies a user-supplied functor + /// to all the nodes in the tree. + /// + /// @param op user-supplied functor, see examples for interface details. + /// @param threaded optional toggle to disable threading, on by default. + /// @param grainSize optional parameter to specify the grainsize + /// for threading, one by default. + /// + /// @warning The functor object is deep-copied to create TBB tasks. + /// + /// @par Example: + /// @code + /// // Functor to offset all the inactive values of a tree. Note + /// // this implementation also illustrates how different + /// // computation can be applied to the different node types. + /// template + /// struct OffsetOp + /// { + /// using ValueT = typename TreeT::ValueType; + /// using RootT = typename TreeT::RootNodeType; + /// using LeafT = typename TreeT::LeafNodeType; + /// OffsetOp(const ValueT& v) : mOffset(v) {} + /// + /// // Processes the root node. Required by the NodeManager + /// void operator()(RootT& root) const + /// { + /// for (typename RootT::ValueOffIter i = root.beginValueOff(); i; ++i) *i += mOffset; + /// } + /// // Processes the leaf nodes. Required by the NodeManager + /// void operator()(LeafT& leaf) const + /// { + /// for (typename LeafT::ValueOffIter i = leaf.beginValueOff(); i; ++i) *i += mOffset; + /// } + /// // Processes the internal nodes. Required by the NodeManager + /// template + /// void operator()(NodeT& node) const + /// { + /// for (typename NodeT::ValueOffIter i = node.beginValueOff(); i; ++i) *i += mOffset; + /// } + /// private: + /// const ValueT mOffset; + /// }; + /// + /// // usage: + /// OffsetOp op(3.0f); + /// tree::NodeManager nodes(tree); + /// nodes.foreachBottomUp(op); + /// + /// // or if a LeafManager already exists + /// using T = tree::LeafManager; + /// OffsetOp op(3.0f); + /// tree::NodeManager nodes(leafManager); + /// nodes.foreachBottomUp(op); + /// + /// @endcode + template + void foreachBottomUp(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mChain.foreachBottomUp(op, threaded, grainSize); + op(mRoot); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mChain.foreachTopDown(op, threaded, grainSize); + } + + //@} + + //@{ + /// @brief Threaded method that processes nodes with a user supplied functor + /// + /// @param op user-supplied functor, see examples for interface details. + /// @param threaded optional toggle to disable threading, on by default. + /// @param grainSize optional parameter to specify the grainsize + /// for threading, one by default. + /// + /// @warning The functor object is deep-copied to create TBB tasks. + /// + /// @par Example: + /// @code + /// // Functor to count nodes in a tree + /// template + /// struct NodeCountOp + /// { + /// NodeCountOp() : nodeCount(TreeType::DEPTH, 0), totalCount(0) + /// { + /// } + /// NodeCountOp(const NodeCountOp& other, tbb::split) : + /// nodeCount(TreeType::DEPTH, 0), totalCount(0) + /// { + /// } + /// void join(const NodeCountOp& other) + /// { + /// for (size_t i = 0; i < nodeCount.size(); ++i) { + /// nodeCount[i] += other.nodeCount[i]; + /// } + /// totalCount += other.totalCount; + /// } + /// // do nothing for the root node + /// void operator()(const typename TreeT::RootNodeType& node) + /// { + /// } + /// // count the internal and leaf nodes + /// template + /// void operator()(const NodeT& node) + /// { + /// ++(nodeCount[NodeT::LEVEL]); + /// ++totalCount; + /// } + /// std::vector nodeCount; + /// openvdb::Index64 totalCount; + /// }; + /// + /// // usage: + /// NodeCountOp op; + /// tree::NodeManager nodes(tree); + /// nodes.reduceBottomUp(op); + /// + /// // or if a LeafManager already exists + /// NodeCountOp op; + /// using T = tree::LeafManager; + /// T leafManager(tree); + /// tree::NodeManager nodes(leafManager); + /// nodes.reduceBottomUp(op); + /// + /// @endcode + template + void reduceBottomUp(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mChain.reduceBottomUp(op, threaded, grainSize); + op(mRoot); + } + + template + void reduceTopDown(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mChain.reduceTopDown(op, threaded, grainSize); + } + //@} + +protected: + RootNodeType& mRoot; + NodeManagerLink mChain; + +private: + NodeManager(const NodeManager&) {}//disallow copy-construction +};// NodeManager class + + +//////////////////////////////////////////// + + +/// @private +/// Template specialization of the NodeManager with no caching of nodes +template +class NodeManager +{ +public: + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static const Index LEVELS = 0; + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) {} + + virtual ~NodeManager() {} + + /// @brief Clear all the cached tree nodes + void clear() {} + + /// @brief Clear and recache all the tree nodes from the + /// tree. This is required if tree nodes have been added or removed. + void rebuild() {} + + /// @brief Return a reference to the root node. + const RootNodeType& root() const { return mRoot; } + + /// @brief Return the total number of cached nodes (excluding the root node) + Index64 nodeCount() const { return 0; } + + Index64 nodeCount(Index) const { return 0; } + + template + void foreachBottomUp(const NodeOp& op, bool, size_t) { op(mRoot); } + + template + void foreachTopDown(const NodeOp& op, bool, size_t) { op(mRoot); } + + template + void reduceBottomUp(NodeOp& op, bool, size_t) { op(mRoot); } + + template + void reduceTopDown(NodeOp& op, bool, size_t) { op(mRoot); } + +protected: + RootNodeType& mRoot; + +private: + NodeManager(const NodeManager&) {} // disallow copy-construction +}; // NodeManager<0> + + +//////////////////////////////////////////// + + +/// @private +/// Template specialization of the NodeManager with one level of nodes +template +class NodeManager +{ +public: + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static_assert(RootNodeType::LEVEL > 0, "expected instantiation of template specialization"); + static const Index LEVELS = 1; + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (TreeOrLeafManagerT::DEPTH == 2 && NodeT0::LEVEL == 0) { + tree.getNodes(mList0); + } else { + mRoot.getNodes(mList0); + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + virtual ~NodeManager() {} + + /// @brief Clear all the cached tree nodes + void clear() { mList0.clear(); } + + /// @brief Clear and recache all the tree nodes from the + /// tree. This is required if tree nodes have been added or removed. + void rebuild() { mList0.clear(); mRoot.getNodes(mList0); } + + /// @brief Return a reference to the root node. + const RootNodeType& root() const { return mRoot; } + + /// @brief Return the total number of cached nodes (excluding the root node) + Index64 nodeCount() const { return mList0.nodeCount(); } + + /// @brief Return the number of cached nodes at level @a i, where + /// 0 corresponds to the lowest level. + Index64 nodeCount(Index i) const { return i==0 ? mList0.nodeCount() : 0; } + + template + void foreachBottomUp(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.foreach(op, threaded, grainSize); + op(mRoot); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList0.foreach(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.reduce(op, threaded, grainSize); + op(mRoot); + } + + template + void reduceTopDown(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList0.reduce(op, threaded, grainSize); + } + +protected: + using NodeT1 = RootNodeType; + using NodeT0 = typename NodeT1::ChildNodeType; + using ListT0 = NodeList; + + NodeT1& mRoot; + ListT0 mList0; + +private: + NodeManager(const NodeManager&) {} // disallow copy-construction +}; // NodeManager<1> + + +//////////////////////////////////////////// + + +/// @private +/// Template specialization of the NodeManager with two levels of nodes +template +class NodeManager +{ +public: + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static_assert(RootNodeType::LEVEL > 1, "expected instantiation of template specialization"); + static const Index LEVELS = 2; + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) + { + mRoot.getNodes(mList1); + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (TreeOrLeafManagerT::DEPTH == 2 && NodeT0::LEVEL == 0) { + tree.getNodes(mList0); + } else { + for (size_t i=0, n=mList1.nodeCount(); iclear(); + mRoot.getNodes(mList1); + for (size_t i=0, n=mList1.nodeCount(); i + void foreachBottomUp(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.foreach(op, threaded, grainSize); + mList1.foreach(op, threaded, grainSize); + op(mRoot); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList1.foreach(op, threaded, grainSize); + mList0.foreach(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.reduce(op, threaded, grainSize); + mList1.reduce(op, threaded, grainSize); + op(mRoot); + } + + template + void reduceTopDown(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList1.reduce(op, threaded, grainSize); + mList0.reduce(op, threaded, grainSize); + } + +protected: + using NodeT2 = RootNodeType; + using NodeT1 = typename NodeT2::ChildNodeType; // upper level + using NodeT0 = typename NodeT1::ChildNodeType; // lower level + + using ListT1 = NodeList; // upper level + using ListT0 = NodeList; // lower level + + NodeT2& mRoot; + ListT1 mList1; + ListT0 mList0; + +private: + NodeManager(const NodeManager&) {} // disallow copy-construction +}; // NodeManager<2> + + +//////////////////////////////////////////// + + +/// @private +/// Template specialization of the NodeManager with three levels of nodes +template +class NodeManager +{ +public: + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static_assert(RootNodeType::LEVEL > 2, "expected instantiation of template specialization"); + static const Index LEVELS = 3; + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) + { + mRoot.getNodes(mList2); + for (size_t i=0, n=mList2.nodeCount(); iclear(); + mRoot.getNodes(mList2); + for (size_t i=0, n=mList2.nodeCount(); i + void foreachBottomUp(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.foreach(op, threaded, grainSize); + mList1.foreach(op, threaded, grainSize); + mList2.foreach(op, threaded, grainSize); + op(mRoot); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList2.foreach(op, threaded, grainSize); + mList1.foreach(op, threaded, grainSize); + mList0.foreach(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.reduce(op, threaded, grainSize); + mList1.reduce(op, threaded, grainSize); + mList2.reduce(op, threaded, grainSize); + op(mRoot); + } + + template + void reduceTopDown(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList2.reduce(op, threaded, grainSize); + mList1.reduce(op, threaded, grainSize); + mList0.reduce(op, threaded, grainSize); + } + +protected: + using NodeT3 = RootNodeType; + using NodeT2 = typename NodeT3::ChildNodeType; // upper level + using NodeT1 = typename NodeT2::ChildNodeType; // mid level + using NodeT0 = typename NodeT1::ChildNodeType; // lower level + + using ListT2 = NodeList; // upper level of internal nodes + using ListT1 = NodeList; // lower level of internal nodes + using ListT0 = NodeList; // lower level of internal nodes or leafs + + NodeT3& mRoot; + ListT2 mList2; + ListT1 mList1; + ListT0 mList0; + +private: + NodeManager(const NodeManager&) {} // disallow copy-construction +}; // NodeManager<3> + + +//////////////////////////////////////////// + + +/// @private +/// Template specialization of the NodeManager with four levels of nodes +template +class NodeManager +{ +public: + using RootNodeType = typename TreeOrLeafManagerT::RootNodeType; + static_assert(RootNodeType::LEVEL > 3, "expected instantiation of template specialization"); + static const Index LEVELS = 4; + + NodeManager(TreeOrLeafManagerT& tree) : mRoot(tree.root()) + { + mRoot.getNodes(mList3); + for (size_t i=0, n=mList3.nodeCount(); iclear(); + mRoot.getNodes(mList3); + for (size_t i=0, n=mList3.nodeCount(); i + void foreachBottomUp(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.foreach(op, threaded, grainSize); + mList1.foreach(op, threaded, grainSize); + mList2.foreach(op, threaded, grainSize); + mList3.foreach(op, threaded, grainSize); + op(mRoot); + } + + template + void foreachTopDown(const NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList3.foreach(op, threaded, grainSize); + mList2.foreach(op, threaded, grainSize); + mList1.foreach(op, threaded, grainSize); + mList0.foreach(op, threaded, grainSize); + } + + template + void reduceBottomUp(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + mList0.reduce(op, threaded, grainSize); + mList1.reduce(op, threaded, grainSize); + mList2.reduce(op, threaded, grainSize); + mList3.reduce(op, threaded, grainSize); + op(mRoot); + } + + template + void reduceTopDown(NodeOp& op, bool threaded = true, size_t grainSize=1) + { + op(mRoot); + mList3.reduce(op, threaded, grainSize); + mList2.reduce(op, threaded, grainSize); + mList1.reduce(op, threaded, grainSize); + mList0.reduce(op, threaded, grainSize); + } + +protected: + using NodeT4 = RootNodeType; + using NodeT3 = typename NodeT4::ChildNodeType; // upper level + using NodeT2 = typename NodeT3::ChildNodeType; // upper mid level + using NodeT1 = typename NodeT2::ChildNodeType; // lower mid level + using NodeT0 = typename NodeT1::ChildNodeType; // lower level + + using ListT3 = NodeList; // upper level of internal nodes + using ListT2 = NodeList; // upper mid level of internal nodes + using ListT1 = NodeList; // lower mid level of internal nodes + using ListT0 = NodeList; // lower level of internal nodes or leafs + + NodeT4& mRoot; + ListT3 mList3; + ListT2 mList2; + ListT1 mList1; + ListT0 mList0; + +private: + NodeManager(const NodeManager&) {} // disallow copy-construction +}; // NodeManager<4> + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_NODEMANAGER_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/NodeUnion.h b/openvdb/tree/NodeUnion.h new file mode 100644 index 00000000..afe7234c --- /dev/null +++ b/openvdb/tree/NodeUnion.h @@ -0,0 +1,200 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file NodeUnion.h +/// +/// @details NodeUnion is a templated helper class that controls access to either +/// the child node pointer or the value for a particular element of a root +/// or internal node. For space efficiency, the child pointer and the value +/// are unioned when possible, since the two are never in use simultaneously. + +#ifndef OPENVDB_TREE_NODEUNION_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_NODEUNION_HAS_BEEN_INCLUDED + +#include +#include +#include // for std::memcpy() +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + +// Forward declaration of traits class +template struct CopyTraits; + +// Default implementation that stores the child pointer and the value separately +// (i.e., not in a union) +// This implementation is not used for POD, math::Vec or math::Coord value types. +template +class NodeUnion +{ +private: + ChildT* mChild; + ValueT mValue; + +public: + NodeUnion(): mChild(nullptr), mValue() {} + + ChildT* getChild() const { return mChild; } + void setChild(ChildT* child) { mChild = child; } + + const ValueT& getValue() const { return mValue; } + ValueT& getValue() { return mValue; } + void setValue(const ValueT& val) { mValue = val; } +}; + + +// Template specialization for values of POD types (int, float, pointer, etc.) +template +class NodeUnion::value>::type> +{ +private: + union { ChildT* mChild; ValueT mValue; }; + +public: + NodeUnion(): mChild(nullptr) {} + + ChildT* getChild() const { return mChild; } + void setChild(ChildT* child) { mChild = child; } + + const ValueT& getValue() const { return mValue; } + ValueT& getValue() { return mValue; } + void setValue(const ValueT& val) { mValue = val; } +}; + + +// Template specialization for values of types such as math::Vec3f and math::Coord +// for which CopyTraits::IsCopyable is true +template +class NodeUnion::IsCopyable>::type> +{ +private: + union { ChildT* mChild; ValueT mValue; }; + +public: + NodeUnion(): mChild(nullptr) {} + NodeUnion(const NodeUnion& other): mChild(nullptr) + { std::memcpy(this, &other, sizeof(*this)); } + NodeUnion& operator=(const NodeUnion& rhs) + { std::memcpy(this, &rhs, sizeof(*this)); return *this; } + + ChildT* getChild() const { return mChild; } + void setChild(ChildT* child) { mChild = child; } + + const ValueT& getValue() const { return mValue; } + ValueT& getValue() { return mValue; } + void setValue(const ValueT& val) { mValue = val; } +}; + + +/// @details A type T is copyable if +/// # T stores member values by value (vs. by pointer or reference) +/// and T's true byte size is given by sizeof(T). +/// # T has a trivial destructor +/// # T has a default constructor +/// # T has an assignment operator +template struct CopyTraits { static const bool IsCopyable = false; }; +template struct CopyTraits> { static const bool IsCopyable = true; }; +template struct CopyTraits> { static const bool IsCopyable = true; }; +template struct CopyTraits> { static const bool IsCopyable = true; }; +template<> struct CopyTraits { static const bool IsCopyable = true; }; + + +//////////////////////////////////////// + + +#else // OPENVDB_ABI_VERSION_NUMBER <= 3 + +// Prior to OpenVDB 4 and the introduction of C++11, values of non-POD types +// were heap-allocated and stored by pointer due to C++98 restrictions on unions. + +// Internal implementation of a union of a child node pointer and a value +template class NodeUnionImpl; + + +// Partial specialization for values of non-class types +// (int, float, pointer, etc.) that stores elements by value +template +class NodeUnionImpl +{ +private: + union { ChildT* child; ValueT value; } mUnion; + +public: + NodeUnionImpl() { mUnion.child = nullptr; } + + ChildT* getChild() const { return mUnion.child; } + void setChild(ChildT* child) { mUnion.child = child; } + + const ValueT& getValue() const { return mUnion.value; } + ValueT& getValue() { return mUnion.value; } + void setValue(const ValueT& val) { mUnion.value = val; } +}; + + +// Partial specialization for values of class types (std::string, +// math::Vec, etc.) that stores elements by pointer +template +class NodeUnionImpl +{ +private: + union { ChildT* child; ValueT* value; } mUnion; + bool mHasChild; + +public: + NodeUnionImpl() : mHasChild(true) { this->setChild(nullptr); } + NodeUnionImpl(const NodeUnionImpl& other) : mHasChild(true) + { + if (other.mHasChild) { + this->setChild(other.getChild()); + } else { + this->setValue(other.getValue()); + } + } + NodeUnionImpl& operator=(const NodeUnionImpl& other) + { + if (other.mHasChild) { + this->setChild(other.getChild()); + } else { + this->setValue(other.getValue()); + } + return *this; + } + ~NodeUnionImpl() { this->setChild(nullptr); } + + ChildT* getChild() const { return mHasChild ? mUnion.child : nullptr; } + void setChild(ChildT* child) + { + if (!mHasChild) delete mUnion.value; + mUnion.child = child; + mHasChild = true; + } + + const ValueT& getValue() const { return *mUnion.value; } + ValueT& getValue() { return *mUnion.value; } + void setValue(const ValueT& val) + { + if (!mHasChild) delete mUnion.value; + mUnion.value = new ValueT(val); + mHasChild = false; + } +}; + + +template +struct NodeUnion: public NodeUnionImpl::value, ValueT, ChildT> +{ + NodeUnion() {} +}; + +#endif + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_NODEUNION_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/RootNode.h b/openvdb/tree/RootNode.h new file mode 100644 index 00000000..cb5b4a5a --- /dev/null +++ b/openvdb/tree/RootNode.h @@ -0,0 +1,3484 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file RootNode.h +/// +/// @brief The root node of an OpenVDB tree + +#ifndef OPENVDB_TREE_ROOTNODE_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_ROOTNODE_HAS_BEEN_INCLUDED + +#include +#include +#include // for truncateRealToHalf() +#include // for isZero(), isExactlyEqual(), etc. +#include +#include // for backward compatibility only (see readTopology()) +#include +#include +#include //for boost::mpl::vector +#include +#include +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +// Forward declarations +template struct NodeChain; +template struct SameRootConfig; +template struct RootNodeCopyHelper; +template struct RootNodeCombineHelper; + + +template +class RootNode +{ +public: + using ChildNodeType = ChildType; + using LeafNodeType = typename ChildType::LeafNodeType; + using ValueType = typename ChildType::ValueType; + using BuildType = typename ChildType::BuildType; + + static const Index LEVEL = 1 + ChildType::LEVEL; // level 0 = leaf + + /// NodeChainType is a list of this tree's node types, from LeafNodeType to RootNode. + using NodeChainType = typename NodeChain::Type; + static_assert(boost::mpl::size::value == LEVEL + 1, + "wrong number of entries in RootNode node chain"); + + /// @brief ValueConverter::Type is the type of a RootNode having the same + /// child hierarchy as this node but a different value type, T. + template + struct ValueConverter { + using Type = RootNode::Type>; + }; + + /// @brief SameConfiguration::value is @c true if and only if + /// OtherNodeType is the type of a RootNode whose ChildNodeType has the same + /// configuration as this node's ChildNodeType. + template + struct SameConfiguration { + static const bool value = SameRootConfig::value; + }; + + + /// Construct a new tree with a background value of 0. + RootNode(); + + /// Construct a new tree with the given background value. + explicit RootNode(const ValueType& background); + + RootNode(const RootNode& other) { *this = other; } + + /// @brief Construct a new tree that reproduces the topology and active states + /// of a tree of a different ValueType but the same configuration (levels, + /// node dimensions and branching factors). Cast the other tree's values to + /// this tree's ValueType. + /// @throw TypeError if the other tree's configuration doesn't match this tree's + /// or if this tree's ValueType is not constructible from the other tree's ValueType. + template + explicit RootNode(const RootNode& other) { *this = other; } + + /// @brief Construct a new tree that reproduces the topology and active states of + /// another tree (which may have a different ValueType), but not the other tree's values. + /// @details All tiles and voxels that are active in the other tree are set to + /// @a foreground in the new tree, and all inactive tiles and voxels are set to @a background. + /// @param other the root node of a tree having (possibly) a different ValueType + /// @param background the value to which inactive tiles and voxels are initialized + /// @param foreground the value to which active tiles and voxels are initialized + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + template + RootNode(const RootNode& other, + const ValueType& background, const ValueType& foreground, TopologyCopy); + + /// @brief Construct a new tree that reproduces the topology and active states of + /// another tree (which may have a different ValueType), but not the other tree's values. + /// All tiles and voxels in the new tree are set to @a background regardless of + /// their active states in the other tree. + /// @param other the root node of a tree having (possibly) a different ValueType + /// @param background the value to which inactive tiles and voxels are initialized + /// @note This copy constructor is generally faster than the one that takes both + /// a foreground and a background value. Its main application is in multithreaded + /// operations where the topology of the output tree exactly matches the input tree. + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + template + RootNode(const RootNode& other, const ValueType& background, TopologyCopy); + + /// @brief Copy a root node of the same type as this node. + RootNode& operator=(const RootNode& other); + /// @brief Copy a root node of the same tree configuration as this node + /// but a different ValueType. + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + /// @note This node's ValueType must be constructible from the other node's ValueType. + /// For example, a root node with values of type float can be assigned to a root node + /// with values of type Vec3s, because a Vec3s can be constructed from a float. + /// But a Vec3s root node cannot be assigned to a float root node. + template + RootNode& operator=(const RootNode& other); + + ~RootNode() { this->clear(); } + +private: + struct Tile { + Tile(): value(zeroVal()), active(false) {} + Tile(const ValueType& v, bool b): value(v), active(b) {} + ValueType value; + bool active; + }; + + // This lightweight struct pairs child pointers and tiles. + struct NodeStruct { + ChildType* child; + Tile tile; + + NodeStruct(): child(nullptr) {} + NodeStruct(ChildType& c): child(&c) {} + NodeStruct(const Tile& t): child(nullptr), tile(t) {} + NodeStruct(const NodeStruct&) = default; + NodeStruct& operator=(const NodeStruct&) = default; + ~NodeStruct() {} ///< @note doesn't delete child + + bool isChild() const { return child != nullptr; } + bool isTile() const { return child == nullptr; } + bool isTileOff() const { return isTile() && !tile.active; } + bool isTileOn() const { return isTile() && tile.active; } + + void set(ChildType& c) { delete child; child = &c; } + void set(const Tile& t) { delete child; child = nullptr; tile = t; } + ChildType& steal(const Tile& t) { ChildType* c=child; child=nullptr; tile=t; return *c; } + }; + + using MapType = std::map; + using MapIter = typename MapType::iterator; + using MapCIter = typename MapType::const_iterator; + + using CoordSet = std::set; + using CoordSetIter = typename CoordSet::iterator; + using CoordSetCIter = typename CoordSet::const_iterator; + + static void setTile(const MapIter& i, const Tile& t) { i->second.set(t); } + static void setChild(const MapIter& i, ChildType& c) { i->second.set(c); } + static Tile& getTile(const MapIter& i) { return i->second.tile; } + static const Tile& getTile(const MapCIter& i) { return i->second.tile; } + static ChildType& getChild(const MapIter& i) { return *(i->second.child); } + static const ChildType& getChild(const MapCIter& i) { return *(i->second.child); } + static ChildType& stealChild(const MapIter& i, const Tile& t) {return i->second.steal(t);} + static const ChildType& stealChild(const MapCIter& i,const Tile& t) {return i->second.steal(t);} + + static bool isChild(const MapCIter& i) { return i->second.isChild(); } + static bool isChild(const MapIter& i) { return i->second.isChild(); } + static bool isTile(const MapCIter& i) { return i->second.isTile(); } + static bool isTile(const MapIter& i) { return i->second.isTile(); } + static bool isTileOff(const MapCIter& i) { return i->second.isTileOff(); } + static bool isTileOff(const MapIter& i) { return i->second.isTileOff(); } + static bool isTileOn(const MapCIter& i) { return i->second.isTileOn(); } + static bool isTileOn(const MapIter& i) { return i->second.isTileOn(); } + + struct NullPred { + static inline bool test(const MapIter&) { return true; } + static inline bool test(const MapCIter&) { return true; } + }; + struct ValueOnPred { + static inline bool test(const MapIter& i) { return isTileOn(i); } + static inline bool test(const MapCIter& i) { return isTileOn(i); } + }; + struct ValueOffPred { + static inline bool test(const MapIter& i) { return isTileOff(i); } + static inline bool test(const MapCIter& i) { return isTileOff(i); } + }; + struct ValueAllPred { + static inline bool test(const MapIter& i) { return isTile(i); } + static inline bool test(const MapCIter& i) { return isTile(i); } + }; + struct ChildOnPred { + static inline bool test(const MapIter& i) { return isChild(i); } + static inline bool test(const MapCIter& i) { return isChild(i); } + }; + struct ChildOffPred { + static inline bool test(const MapIter& i) { return isTile(i); } + static inline bool test(const MapCIter& i) { return isTile(i); } + }; + + template + class BaseIter + { + public: + using RootNodeT = _RootNodeT; + using MapIterT = _MapIterT; // either MapIter or MapCIter + + bool operator==(const BaseIter& other) const + { + return (mParentNode == other.mParentNode) && (mIter == other.mIter); + } + bool operator!=(const BaseIter& other) const { return !(*this == other); } + + RootNodeT* getParentNode() const { return mParentNode; } + /// Return a reference to the node over which this iterator iterates. + RootNodeT& parent() const + { + if (!mParentNode) OPENVDB_THROW(ValueError, "iterator references a null parent node"); + return *mParentNode; + } + + bool test() const { assert(mParentNode); return mIter != mParentNode->mTable.end(); } + operator bool() const { return this->test(); } + + void increment() { if (this->test()) { ++mIter; } this->skip(); } + bool next() { this->increment(); return this->test(); } + void increment(Index n) { for (Index i = 0; i < n && this->next(); ++i) {} } + + /// @brief Return this iterator's position as an offset from + /// the beginning of the parent node's map. + Index pos() const + { + return !mParentNode ? 0U : Index(std::distance(mParentNode->mTable.begin(), mIter)); + } + + bool isValueOn() const { return RootNodeT::isTileOn(mIter); } + bool isValueOff() const { return RootNodeT::isTileOff(mIter); } + void setValueOn(bool on = true) const { mIter->second.tile.active = on; } + void setValueOff() const { mIter->second.tile.active = false; } + + /// Return the coordinates of the item to which this iterator is pointing. + Coord getCoord() const { return mIter->first; } + /// Return in @a xyz the coordinates of the item to which this iterator is pointing. + void getCoord(Coord& xyz) const { xyz = this->getCoord(); } + + protected: + BaseIter(): mParentNode(nullptr) {} + BaseIter(RootNodeT& parent, const MapIterT& iter): mParentNode(&parent), mIter(iter) {} + + void skip() { while (this->test() && !FilterPredT::test(mIter)) ++mIter; } + + RootNodeT* mParentNode; + MapIterT mIter; + }; // BaseIter + + template + class ChildIter: public BaseIter + { + public: + using BaseT = BaseIter; + using NodeType = RootNodeT; + using ValueType = NodeType; + using ChildNodeType = ChildNodeT; + using NonConstNodeType = typename std::remove_const::type; + using NonConstValueType = typename std::remove_const::type; + using NonConstChildNodeType = typename std::remove_const::type; + using BaseT::mIter; + + ChildIter() {} + ChildIter(RootNodeT& parent, const MapIterT& iter): BaseT(parent, iter) { BaseT::skip(); } + + ChildIter& operator++() { BaseT::increment(); return *this; } + + ChildNodeT& getValue() const { return getChild(mIter); } + ChildNodeT& operator*() const { return this->getValue(); } + ChildNodeT* operator->() const { return &this->getValue(); } + }; // ChildIter + + template + class ValueIter: public BaseIter + { + public: + using BaseT = BaseIter; + using NodeType = RootNodeT; + using ValueType = ValueT; + using NonConstNodeType = typename std::remove_const::type; + using NonConstValueType = typename std::remove_const::type; + using BaseT::mIter; + + ValueIter() {} + ValueIter(RootNodeT& parent, const MapIterT& iter): BaseT(parent, iter) { BaseT::skip(); } + + ValueIter& operator++() { BaseT::increment(); return *this; } + + ValueT& getValue() const { return getTile(mIter).value; } + ValueT& operator*() const { return this->getValue(); } + ValueT* operator->() const { return &(this->getValue()); } + + void setValue(const ValueT& v) const { assert(isTile(mIter)); getTile(mIter).value = v; } + + template + void modifyValue(const ModifyOp& op) const + { + assert(isTile(mIter)); + op(getTile(mIter).value); + } + }; // ValueIter + + template + class DenseIter: public BaseIter + { + public: + using BaseT = BaseIter; + using NodeType = RootNodeT; + using ValueType = ValueT; + using ChildNodeType = ChildNodeT; + using NonConstNodeType = typename std::remove_const::type; + using NonConstValueType = typename std::remove_const::type; + using NonConstChildNodeType = typename std::remove_const::type; + using BaseT::mIter; + + DenseIter() {} + DenseIter(RootNodeT& parent, const MapIterT& iter): BaseT(parent, iter) {} + + DenseIter& operator++() { BaseT::increment(); return *this; } + + bool isChildNode() const { return isChild(mIter); } + + ChildNodeT* probeChild(NonConstValueType& value) const + { + if (isChild(mIter)) return &getChild(mIter); + value = getTile(mIter).value; + return nullptr; + } + bool probeChild(ChildNodeT*& child, NonConstValueType& value) const + { + child = this->probeChild(value); + return child != nullptr; + } + bool probeValue(NonConstValueType& value) const { return !this->probeChild(value); } + + void setChild(ChildNodeT& c) const { RootNodeT::setChild(mIter, c); } + void setChild(ChildNodeT* c) const { assert(c != nullptr); RootNodeT::setChild(mIter, *c); } + void setValue(const ValueT& v) const + { + if (isTile(mIter)) getTile(mIter).value = v; + /// @internal For consistency with iterators for other node types + /// (see, e.g., InternalNode::DenseIter::unsetItem()), we don't call + /// setTile() here, because that would also delete the child. + else stealChild(mIter, Tile(v, /*active=*/true)); + } + }; // DenseIter + +public: + using ChildOnIter = ChildIter; + using ChildOnCIter = ChildIter; + using ChildOffIter = ValueIter; + using ChildOffCIter = ValueIter; + using ChildAllIter = DenseIter; + using ChildAllCIter = DenseIter; + + using ValueOnIter = ValueIter; + using ValueOnCIter = ValueIter; + using ValueOffIter = ValueIter; + using ValueOffCIter = ValueIter; + using ValueAllIter = ValueIter; + using ValueAllCIter = ValueIter; + + + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(*this, mTable.begin()); } + ChildOffCIter cbeginChildOff() const { return ChildOffCIter(*this, mTable.begin()); } + ChildAllCIter cbeginChildAll() const { return ChildAllCIter(*this, mTable.begin()); } + ChildOnCIter beginChildOn() const { return cbeginChildOn(); } + ChildOffCIter beginChildOff() const { return cbeginChildOff(); } + ChildAllCIter beginChildAll() const { return cbeginChildAll(); } + ChildOnIter beginChildOn() { return ChildOnIter(*this, mTable.begin()); } + ChildOffIter beginChildOff() { return ChildOffIter(*this, mTable.begin()); } + ChildAllIter beginChildAll() { return ChildAllIter(*this, mTable.begin()); } + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(*this, mTable.begin()); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(*this, mTable.begin()); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(*this, mTable.begin()); } + ValueOnCIter beginValueOn() const { return cbeginValueOn(); } + ValueOffCIter beginValueOff() const { return cbeginValueOff(); } + ValueAllCIter beginValueAll() const { return cbeginValueAll(); } + ValueOnIter beginValueOn() { return ValueOnIter(*this, mTable.begin()); } + ValueOffIter beginValueOff() { return ValueOffIter(*this, mTable.begin()); } + ValueAllIter beginValueAll() { return ValueAllIter(*this, mTable.begin()); } + + /// Return the total amount of memory in bytes occupied by this node and its children. + Index64 memUsage() const; + + /// @brief Expand the specified bbox so it includes the active tiles of + /// this root node as well as all the active values in its child + /// nodes. If visitVoxels is false LeafNodes will be approximated + /// as dense, i.e. with all voxels active. Else the individual + /// active voxels are visited to produce a tight bbox. + void evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels = true) const; + + /// Return the bounding box of this RootNode, i.e., an infinite bounding box. + static CoordBBox getNodeBoundingBox() { return CoordBBox::inf(); } + + /// @brief Change inactive tiles or voxels with a value equal to +/- the + /// old background to the specified value (with the same sign). Active values + /// are unchanged. + /// + /// @param value The new background value + /// @param updateChildNodes If true the background values of the + /// child nodes is also updated. Else only the background value + /// stored in the RootNode itself is changed. + /// + /// @note Instead of setting @a updateChildNodes to true, consider + /// using tools::changeBackground or + /// tools::changeLevelSetBackground which are multi-threaded! + void setBackground(const ValueType& value, bool updateChildNodes); + + /// Return this node's background value. + const ValueType& background() const { return mBackground; } + + /// Return @c true if the given tile is inactive and has the background value. + bool isBackgroundTile(const Tile&) const; + //@{ + /// Return @c true if the given iterator points to an inactive tile with the background value. + bool isBackgroundTile(const MapIter&) const; + bool isBackgroundTile(const MapCIter&) const; + //@} + + /// Return the number of background tiles. + size_t numBackgroundTiles() const; + /// @brief Remove all background tiles. + /// @return the number of tiles removed. + size_t eraseBackgroundTiles(); + inline void clear(); + + /// Return @c true if this node's table is either empty or contains only background tiles. + bool empty() const { return mTable.size() == numBackgroundTiles(); } + + /// @brief Expand this node's table so that (x, y, z) is included in the index range. + /// @return @c true if an expansion was performed (i.e., if (x, y, z) was not already + /// included in the index range). + bool expand(const Coord& xyz); + + static Index getLevel() { return LEVEL; } + static void getNodeLog2Dims(std::vector& dims); + static Index getChildDim() { return ChildType::DIM; } + + /// Return the number of entries in this node's table. + Index getTableSize() const { return static_cast(mTable.size()); } + + Index getWidth() const { return this->getMaxIndex()[0] - this->getMinIndex()[0]; } + Index getHeight() const { return this->getMaxIndex()[1] - this->getMinIndex()[1]; } + Index getDepth() const { return this->getMaxIndex()[2] - this->getMinIndex()[2]; } + + /// Return the smallest index of the current tree. + Coord getMinIndex() const; + /// Return the largest index of the current tree. + Coord getMaxIndex() const; + /// Return the current index range. Both min and max are inclusive. + void getIndexRange(CoordBBox& bbox) const; + + /// @brief Return @c true if the given tree has the same node and active value + /// topology as this tree (but possibly a different @c ValueType). + template + bool hasSameTopology(const RootNode& other) const; + + /// Return @c false if the other node's dimensions don't match this node's. + template + static bool hasSameConfiguration(const RootNode& other); + + /// Return @c true if values of the other node's ValueType can be converted + /// to values of this node's ValueType. + template + static bool hasCompatibleValueType(const RootNode& other); + + Index32 leafCount() const; + Index32 nonLeafCount() const; + Index64 onVoxelCount() const; + Index64 offVoxelCount() const; + Index64 onLeafVoxelCount() const; + Index64 offLeafVoxelCount() const; + Index64 onTileCount() const; + void nodeCount(std::vector &vec) const; + + bool isValueOn(const Coord& xyz) const; + + /// Return @c true if this root node, or any of its child nodes, have active tiles. + bool hasActiveTiles() const; + + const ValueType& getValue(const Coord& xyz) const; + bool probeValue(const Coord& xyz, ValueType& value) const; + + /// @brief Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides. + /// @details If (x, y, z) isn't explicitly represented in the tree (i.e., + /// it is implicitly a background voxel), return -1. + int getValueDepth(const Coord& xyz) const; + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the value of the voxel at the given coordinates but don't change its active state. + void setValueOnly(const Coord& xyz, const ValueType& value); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValueOn(const Coord& xyz, const ValueType& value); + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz); + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value); + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + template + void modifyValue(const Coord& xyz, const ModifyOp& op); + /// Apply a functor to the voxel at the given coordinates. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op); + + //@{ + /// @brief Set all voxels within a given axis-aligned box to a constant value. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box + /// @param value the value to which to set voxels within the box + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive + /// @note This operation generates a sparse, but not always optimally sparse, + /// representation of the filled box. Follow fill operations with a prune() + /// operation for optimal sparseness. + void fill(const CoordBBox& bbox, const ValueType& value, bool active = true); + void sparseFill(const CoordBBox& bbox, const ValueType& value, bool active = true) + { + this->fill(bbox, value, active); + } + //@} + + /// @brief Set all voxels within a given axis-aligned box to a constant value + /// and ensure that those voxels are all represented at the leaf level. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box. + /// @param value the value to which to set voxels within the box. + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive. + /// @sa voxelizeActiveTiles() + void denseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// @brief Densify active tiles, i.e., replace them with leaf-level active voxels. + /// + /// @param threaded if true, this operation is multi-threaded (over the internal nodes). + /// + /// @warning This method can explode the tree's memory footprint, especially if it + /// contains active tiles at the upper levels (in particular the root level)! + /// + /// @sa denseFill() + void voxelizeActiveTiles(bool threaded = true); + + /// @brief Copy into a dense grid the values of all voxels, both active and inactive, + /// that intersect a given bounding box. + /// @param bbox inclusive bounding box of the voxels to be copied into the dense grid + /// @param dense dense grid with a stride in @e z of one (see tools::Dense + /// in tools/Dense.h for the required API) + template + void copyToDense(const CoordBBox& bbox, DenseT& dense) const; + + + // + // I/O + // + bool writeTopology(std::ostream&, bool toHalf = false) const; + bool readTopology(std::istream&, bool fromHalf = false); + + void writeBuffers(std::ostream&, bool toHalf = false) const; + void readBuffers(std::istream&, bool fromHalf = false); + void readBuffers(std::istream&, const CoordBBox&, bool fromHalf = false); + + + // + // Voxel access + // + /// Return the value of the voxel at the given coordinates and, if necessary, update + /// the accessor with pointers to the nodes along the path from the root node to + /// the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + const ValueType& getValueAndCache(const Coord& xyz, AccessorT&) const; + /// Return @c true if the voxel at the given coordinates is active and, if necessary, + /// update the accessor with pointers to the nodes along the path from the root node + /// to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + bool isValueOnAndCache(const Coord& xyz, AccessorT&) const; + + /// Change the value of the voxel at the given coordinates and mark it as active. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// Set the value of the voxel at the given coordinates without changing its active state. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueOnlyAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&); + + /// Apply a functor to the voxel at the given coordinates. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void modifyValueAndActiveStateAndCache(const Coord& xyz, const ModifyOp& op, AccessorT&); + + /// Change the value of the voxel at the given coordinates and mark it as inactive. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setValueOffAndCache(const Coord& xyz, const ValueType& value, AccessorT&); + + /// Set the active state of the voxel at the given coordinates without changing its value. + /// If necessary, update the accessor with pointers to the nodes along the path + /// from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + void setActiveStateAndCache(const Coord& xyz, bool on, AccessorT&); + + /// Return, in @a value, the value of the voxel at the given coordinates and, + /// if necessary, update the accessor with pointers to the nodes along + /// the path from the root node to the node containing the voxel. + /// @return @c true if the voxel at the given coordinates is active + /// @note Used internally by ValueAccessor. + template + bool probeValueAndCache(const Coord& xyz, ValueType& value, AccessorT&) const; + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides. + /// If (x, y, z) isn't explicitly represented in the tree (i.e., it is implicitly + /// a background voxel), return -1. If necessary, update the accessor with pointers + /// to the nodes along the path from the root node to the node containing the voxel. + /// @note Used internally by ValueAccessor. + template + int getValueDepthAndCache(const Coord& xyz, AccessorT&) const; + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&); + + /// @brief Reduce the memory footprint of this tree by replacing with tiles + /// any nodes whose values are all the same (optionally to within a tolerance) + /// and have the same active state. + /// + /// @note Consider instead using tools::prune which is multi-threaded! + void prune(const ValueType& tolerance = zeroVal()); + + /// @brief Add the given leaf node to this tree, creating a new branch if necessary. + /// If a leaf node with the same origin already exists, replace it. + void addLeaf(LeafNodeType* leaf); + + /// @brief Same as addLeaf() but, if necessary, update the given accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + void addLeafAndCache(LeafNodeType* leaf, AccessorT&); + + /// @brief Return a pointer to the node of type @c NodeT that contains voxel (x, y, z) + /// and replace it with a tile of the specified value and state. + /// If no such node exists, leave the tree unchanged and return @c nullptr. + /// + /// @note The caller takes ownership of the node and is responsible for deleting it. + /// + /// @warning Since this method potentially removes nodes and branches of the tree, + /// it is important to clear the caches of all ValueAccessors associated with this tree. + template + NodeT* stealNode(const Coord& xyz, const ValueType& value, bool state); + + /// @brief Add the given child node at the root level. + /// If a child node with the same origin already exists, delete the old node and add + /// the new node in its place (i.e. ownership of the new child node is transferred + /// to this RootNode). + /// @return @c true (for consistency with InternalNode::addChild) + bool addChild(ChildType* child); + + /// @brief Add a tile containing voxel (x, y, z) at the root level, + /// deleting the existing branch if necessary. + void addTile(const Coord& xyz, const ValueType& value, bool state); + + /// @brief Add a tile containing voxel (x, y, z) at the specified tree level, + /// creating a new branch if necessary. Delete any existing lower-level nodes + /// that contain (x, y, z). + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state); + + /// @brief Same as addTile() but, if necessary, update the given accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + void addTileAndCache(Index level, const Coord& xyz, const ValueType&, bool state, AccessorT&); + + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, create one that preserves the values and + /// active states of all voxels. + /// @details Use this method to preallocate a static tree topology + /// over which to safely perform multithreaded processing. + LeafNodeType* touchLeaf(const Coord& xyz); + + /// @brief Same as touchLeaf() but, if necessary, update the given accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + LeafNodeType* touchLeafAndCache(const Coord& xyz, AccessorT& acc); + + //@{ + /// @brief Return a pointer to the node that contains voxel (x, y, z). + /// If no such node exists, return @c nullptr. + template + NodeT* probeNode(const Coord& xyz); + template + const NodeT* probeConstNode(const Coord& xyz) const; + //@} + + //@{ + /// @brief Same as probeNode() but, if necessary, update the given accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + NodeT* probeNodeAndCache(const Coord& xyz, AccessorT& acc); + template + const NodeT* probeConstNodeAndCache(const Coord& xyz, AccessorT& acc) const; + //@} + + //@{ + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, return @c nullptr. + LeafNodeType* probeLeaf(const Coord& xyz); + const LeafNodeType* probeConstLeaf(const Coord& xyz) const; + const LeafNodeType* probeLeaf(const Coord& xyz) const; + //@} + + //@{ + /// @brief Same as probeLeaf() but, if necessary, update the given accessor with pointers + /// to the nodes along the path from the root node to the node containing the coordinate. + template + LeafNodeType* probeLeafAndCache(const Coord& xyz, AccessorT& acc); + template + const LeafNodeType* probeConstLeafAndCache(const Coord& xyz, AccessorT& acc) const; + template + const LeafNodeType* probeLeafAndCache(const Coord& xyz, AccessorT& acc) const; + //@} + + + // + // Aux methods + // + + //@{ + /// @brief Adds all nodes of a certain type to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...;// defines the type of nodes to be added to the array + /// void push_back(value_type nodePtr);// method that add nodes to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.getNodes(array); + /// @endcode + template void getNodes(ArrayT& array); + template void getNodes(ArrayT& array) const; + //@} + + //@{ + /// @brief Steals all nodes of a certain type from the tree and + /// adds them to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...;// defines the type of nodes to be added to the array + /// void push_back(value_type nodePtr);// method that add nodes to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.stealNodes(array); + /// @endcode + template + void stealNodes(ArrayT& array, const ValueType& value, bool state); + template + void stealNodes(ArrayT& array) { this->stealNodes(array, mBackground, false); } + //@} + + /// @brief Efficiently merge another tree into this tree using one of several schemes. + /// @details This operation is primarily intended to combine trees that are mostly + /// non-overlapping (for example, intermediate trees from computations that are + /// parallelized across disjoint regions of space). + /// @note This operation is not guaranteed to produce an optimally sparse tree. + /// Follow merge() with prune() for optimal sparseness. + /// @warning This operation always empties the other tree. + template void merge(RootNode& other); + + /// @brief Union this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. + /// @details The resulting state of a value is active if the corresponding value + /// was already active OR if it is active in the other tree. Also, a resulting + /// value maps to a voxel if the corresponding value already mapped to a voxel + /// OR if it is a voxel in the other tree. Thus, a resulting value can only + /// map to a tile if the corresponding value already mapped to a tile + /// AND if it is a tile value in other tree. + /// + /// @note This operation modifies only active states, not values. + /// Specifically, active tiles and voxels in this tree are not changed, and + /// tiles or voxels that were inactive in this tree but active in the other tree + /// are marked as active in this tree but left with their original values. + template + void topologyUnion(const RootNode& other); + + /// @brief Intersects this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. + /// @details The resulting state of a value is active only if the corresponding + /// value was already active AND if it is active in the other tree. Also, a + /// resulting value maps to a voxel if the corresponding value + /// already mapped to an active voxel in either of the two grids + /// and it maps to an active tile or voxel in the other grid. + /// + /// @note This operation can delete branches in this grid if they + /// overlap with inactive tiles in the other grid. Likewise active + /// voxels can be turned into inactive voxels resulting in leaf + /// nodes with no active values. Thus, it is recommended to + /// subsequently call prune. + template + void topologyIntersection(const RootNode& other); + + /// @brief Difference this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this tree and inactive in the other tree. + /// + /// @note This operation can delete branches in this grid if they + /// overlap with active tiles in the other grid. Likewise active + /// voxels can be turned into inactive voxels resulting in leaf + /// nodes with no active values. Thus, it is recommended to + /// subsequently call prune. + template + void topologyDifference(const RootNode& other); + + template + void combine(RootNode& other, CombineOp&, bool prune = false); + + template + void combine2(const RootNode& other0, const OtherRootNode& other1, + CombineOp& op, bool prune = false); + + /// @brief Call the templated functor BBoxOp with bounding box + /// information for all active tiles and leaf nodes in the tree. + /// An additional level argument is provided for each callback. + /// + /// @note The bounding boxes are guaranteed to be non-overlapping. + template void visitActiveBBox(BBoxOp&) const; + + template void visit(VisitorOp&); + template void visit(VisitorOp&) const; + + template + void visit2(OtherRootNodeType& other, VisitorOp&); + template + void visit2(OtherRootNodeType& other, VisitorOp&) const; + +private: + /// During topology-only construction, access is needed + /// to protected/private members of other template instances. + template friend class RootNode; + + template friend struct RootNodeCopyHelper; + template friend struct RootNodeCombineHelper; + + /// Currently no-op, but can be used to define empty and delete keys for mTable + void initTable() {} + //@{ + /// @internal Used by doVisit2(). + void resetTable(MapType& table) { mTable.swap(table); table.clear(); } + void resetTable(const MapType&) const {} + //@} + + Index getChildCount() const; + Index getTileCount() const; + Index getActiveTileCount() const; + Index getInactiveTileCount() const; + + /// Return a MapType key for the given coordinates. + static Coord coordToKey(const Coord& xyz) { return xyz & ~(ChildType::DIM - 1); } + + /// Insert this node's mTable keys into the given set. + void insertKeys(CoordSet&) const; + + /// Return @c true if this node's mTable contains the given key. + bool hasKey(const Coord& key) const { return mTable.find(key) != mTable.end(); } + //@{ + /// @brief Look up the given key in this node's mTable. + /// @return an iterator pointing to the matching mTable entry or to mTable.end(). + MapIter findKey(const Coord& key) { return mTable.find(key); } + MapCIter findKey(const Coord& key) const { return mTable.find(key); } + //@} + //@{ + /// @brief Convert the given coordinates to a key and look the key up in this node's mTable. + /// @return an iterator pointing to the matching mTable entry or to mTable.end(). + MapIter findCoord(const Coord& xyz) { return mTable.find(coordToKey(xyz)); } + MapCIter findCoord(const Coord& xyz) const { return mTable.find(coordToKey(xyz)); } + //@} + /// @brief Convert the given coordinates to a key and look the key up in this node's mTable. + /// @details If the key is not found, insert a background tile with that key. + /// @return an iterator pointing to the matching mTable entry. + MapIter findOrAddCoord(const Coord& xyz); + + /// @brief Verify that the tree rooted at @a other has the same configuration + /// (levels, branching factors and node dimensions) as this tree, but allow + /// their ValueTypes to differ. + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + template + static void enforceSameConfiguration(const RootNode& other); + + /// @brief Verify that @a other has values of a type that can be converted + /// to this node's ValueType. + /// @details For example, values of type float are compatible with values of type Vec3s, + /// because a Vec3s can be constructed from a float. But the reverse is not true. + /// @throw TypeError if the other node's ValueType is not convertible into this node's. + template + static void enforceCompatibleValueTypes(const RootNode& other); + + template + void doCombine2(const RootNode&, const OtherRootNode&, CombineOp&, bool prune); + + template + static inline void doVisit(RootNodeT&, VisitorOp&); + + template + static inline void doVisit2(RootNodeT&, OtherRootNodeT&, VisitorOp&); + + + MapType mTable; + ValueType mBackground; +}; // end of RootNode class + + +//////////////////////////////////////// + + +/// @brief NodeChain::Type is a boost::mpl::vector +/// that lists the types of the nodes of the tree rooted at RootNodeType in reverse order, +/// from LeafNode to RootNode. +/// @details For example, if RootNodeType is +/// @code +/// RootNode > > +/// @endcode +/// then NodeChain::Type is +/// @code +/// boost::mpl::vector< +/// LeafNode, +/// InternalNode, +/// InternalNode >, +/// RootNode > > > +/// @endcode +/// +/// @note Use the following to get the Nth node type, where N=0 is the LeafNodeType: +/// @code +/// boost::mpl::at >::type +/// @endcode +template +struct NodeChain { + using SubtreeT = typename NodeChain::Type; + using Type = typename boost::mpl::push_back::type; +}; + +/// Specialization to terminate NodeChain +template +struct NodeChain { + using Type = typename boost::mpl::vector::type; +}; + + +//////////////////////////////////////// + + +//@{ +/// Helper metafunction used to implement RootNode::SameConfiguration +/// (which, as an inner class, can't be independently specialized) +template +struct SameRootConfig { + static const bool value = false; +}; + +template +struct SameRootConfig > { + static const bool value = ChildT1::template SameConfiguration::value; +}; +//@} + + +//////////////////////////////////////// + + +template +inline +RootNode::RootNode(): mBackground(zeroVal()) +{ + this->initTable(); +} + + +template +inline +RootNode::RootNode(const ValueType& background): mBackground(background) +{ + this->initTable(); +} + + +template +template +inline +RootNode::RootNode(const RootNode& other, + const ValueType& backgd, const ValueType& foregd, TopologyCopy): + mBackground(backgd) +{ + using OtherRootT = RootNode; + + enforceSameConfiguration(other); + + const Tile bgTile(backgd, /*active=*/false), fgTile(foregd, true); + this->initTable(); + + for (typename OtherRootT::MapCIter i=other.mTable.begin(), e=other.mTable.end(); i != e; ++i) { + mTable[i->first] = OtherRootT::isTile(i) + ? NodeStruct(OtherRootT::isTileOn(i) ? fgTile : bgTile) + : NodeStruct(*(new ChildT(OtherRootT::getChild(i), backgd, foregd, TopologyCopy()))); + } +} + + +template +template +inline +RootNode::RootNode(const RootNode& other, + const ValueType& backgd, TopologyCopy): + mBackground(backgd) +{ + using OtherRootT = RootNode; + + enforceSameConfiguration(other); + + const Tile bgTile(backgd, /*active=*/false), fgTile(backgd, true); + this->initTable(); + for (typename OtherRootT::MapCIter i=other.mTable.begin(), e=other.mTable.end(); i != e; ++i) { + mTable[i->first] = OtherRootT::isTile(i) + ? NodeStruct(OtherRootT::isTileOn(i) ? fgTile : bgTile) + : NodeStruct(*(new ChildT(OtherRootT::getChild(i), backgd, TopologyCopy()))); + } +} + + +//////////////////////////////////////// + + +// This helper class is a friend of RootNode and is needed so that assignment +// with value conversion can be specialized for compatible and incompatible +// pairs of RootNode types. +template +struct RootNodeCopyHelper +{ + static inline void copyWithValueConversion(RootT& self, const OtherRootT& other) + { + // If the two root nodes have different configurations or incompatible ValueTypes, + // throw an exception. + self.enforceSameConfiguration(other); + self.enforceCompatibleValueTypes(other); + // One of the above two tests should throw, so we should never get here: + std::ostringstream ostr; + ostr << "cannot convert a " << typeid(OtherRootT).name() + << " to a " << typeid(RootT).name(); + OPENVDB_THROW(TypeError, ostr.str()); + } +}; + +// Specialization for root nodes of compatible types +template +struct RootNodeCopyHelper +{ + static inline void copyWithValueConversion(RootT& self, const OtherRootT& other) + { + using ValueT = typename RootT::ValueType; + using ChildT = typename RootT::ChildNodeType; + using NodeStruct = typename RootT::NodeStruct; + using Tile = typename RootT::Tile; + using OtherValueT = typename OtherRootT::ValueType; + using OtherMapCIter = typename OtherRootT::MapCIter; + using OtherTile = typename OtherRootT::Tile; + + struct Local { + /// @todo Consider using a value conversion functor passed as an argument instead. + static inline ValueT convertValue(const OtherValueT& val) { return ValueT(val); } + }; + + self.mBackground = Local::convertValue(other.mBackground); + + self.clear(); + self.initTable(); + + for (OtherMapCIter i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + if (other.isTile(i)) { + // Copy the other node's tile, but convert its value to this node's ValueType. + const OtherTile& otherTile = other.getTile(i); + self.mTable[i->first] = NodeStruct( + Tile(Local::convertValue(otherTile.value), otherTile.active)); + } else { + // Copy the other node's child, but convert its values to this node's ValueType. + self.mTable[i->first] = NodeStruct(*(new ChildT(other.getChild(i)))); + } + } + } +}; + + +// Overload for root nodes of the same type as this node +template +inline RootNode& +RootNode::operator=(const RootNode& other) +{ + if (&other != this) { + mBackground = other.mBackground; + + this->clear(); + this->initTable(); + + for (MapCIter i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + mTable[i->first] = + isTile(i) ? NodeStruct(getTile(i)) : NodeStruct(*(new ChildT(getChild(i)))); + } + } + return *this; +} + +// Overload for root nodes of different types +template +template +inline RootNode& +RootNode::operator=(const RootNode& other) +{ + using OtherRootT = RootNode; + using OtherValueT = typename OtherRootT::ValueType; + static const bool compatible = (SameConfiguration::value + && CanConvertType::value); + RootNodeCopyHelper::copyWithValueConversion(*this, other); + return *this; +} + + +//////////////////////////////////////// + +template +inline void +RootNode::setBackground(const ValueType& background, bool updateChildNodes) +{ + if (math::isExactlyEqual(background, mBackground)) return; + + if (updateChildNodes) { + // Traverse the tree, replacing occurrences of mBackground with background + // and -mBackground with -background. + for (MapIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + ChildT *child = iter->second.child; + if (child) { + child->resetBackground(/*old=*/mBackground, /*new=*/background); + } else { + Tile& tile = getTile(iter); + if (tile.active) continue;//only change inactive tiles + if (math::isApproxEqual(tile.value, mBackground)) { + tile.value = background; + } else if (math::isApproxEqual(tile.value, math::negative(mBackground))) { + tile.value = math::negative(background); + } + } + } + } + mBackground = background; +} + +template +inline bool +RootNode::isBackgroundTile(const Tile& tile) const +{ + return !tile.active && math::isApproxEqual(tile.value, mBackground); +} + +template +inline bool +RootNode::isBackgroundTile(const MapIter& iter) const +{ + return isTileOff(iter) && math::isApproxEqual(getTile(iter).value, mBackground); +} + +template +inline bool +RootNode::isBackgroundTile(const MapCIter& iter) const +{ + return isTileOff(iter) && math::isApproxEqual(getTile(iter).value, mBackground); +} + + +template +inline size_t +RootNode::numBackgroundTiles() const +{ + size_t count = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (this->isBackgroundTile(i)) ++count; + } + return count; +} + + +template +inline size_t +RootNode::eraseBackgroundTiles() +{ + std::set keysToErase; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (this->isBackgroundTile(i)) keysToErase.insert(i->first); + } + for (std::set::iterator i = keysToErase.begin(), e = keysToErase.end(); i != e; ++i) { + mTable.erase(*i); + } + return keysToErase.size(); +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::insertKeys(CoordSet& keys) const +{ + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + keys.insert(i->first); + } +} + + +template +inline typename RootNode::MapIter +RootNode::findOrAddCoord(const Coord& xyz) +{ + const Coord key = coordToKey(xyz); + std::pair result = mTable.insert( + typename MapType::value_type(key, NodeStruct(Tile(mBackground, /*active=*/false)))); + return result.first; +} + + +template +inline bool +RootNode::expand(const Coord& xyz) +{ + const Coord key = coordToKey(xyz); + std::pair result = mTable.insert( + typename MapType::value_type(key, NodeStruct(Tile(mBackground, /*active=*/false)))); + return result.second; // return true if the key did not already exist +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::getNodeLog2Dims(std::vector& dims) +{ + dims.push_back(0); // magic number; RootNode has no Log2Dim + ChildT::getNodeLog2Dims(dims); +} + + +template +inline Coord +RootNode::getMinIndex() const +{ + return mTable.empty() ? Coord(0) : mTable.begin()->first; +} + +template +inline Coord +RootNode::getMaxIndex() const +{ + return mTable.empty() ? Coord(0) : mTable.rbegin()->first + Coord(ChildT::DIM - 1); +} + + +template +inline void +RootNode::getIndexRange(CoordBBox& bbox) const +{ + bbox.min() = this->getMinIndex(); + bbox.max() = this->getMaxIndex(); +} + + +//////////////////////////////////////// + + +template +template +inline bool +RootNode::hasSameTopology(const RootNode& other) const +{ + using OtherRootT = RootNode; + using OtherMapT = typename OtherRootT::MapType; + using OtherIterT = typename OtherRootT::MapIter; + using OtherCIterT = typename OtherRootT::MapCIter; + + if (!hasSameConfiguration(other)) return false; + + // Create a local copy of the other node's table. + OtherMapT copyOfOtherTable = other.mTable; + + // For each entry in this node's table... + for (MapCIter thisIter = mTable.begin(); thisIter != mTable.end(); ++thisIter) { + if (this->isBackgroundTile(thisIter)) continue; // ignore background tiles + + // Fail if there is no corresponding entry in the other node's table. + OtherCIterT otherIter = other.findKey(thisIter->first); + if (otherIter == other.mTable.end()) return false; + + // Fail if this entry is a tile and the other is a child or vice-versa. + if (isChild(thisIter)) {//thisIter points to a child + if (OtherRootT::isTile(otherIter)) return false; + // Fail if both entries are children, but the children have different topology. + if (!getChild(thisIter).hasSameTopology(&OtherRootT::getChild(otherIter))) return false; + } else {//thisIter points to a tile + if (OtherRootT::isChild(otherIter)) return false; + if (getTile(thisIter).active != OtherRootT::getTile(otherIter).active) return false; + } + + // Remove tiles and child nodes with matching topology from + // the copy of the other node's table. This is required since + // the two root tables can include an arbitrary number of + // background tiles and still have the same topology! + copyOfOtherTable.erase(otherIter->first); + } + // Fail if the remaining entries in copyOfOtherTable are not all background tiles. + for (OtherIterT i = copyOfOtherTable.begin(), e = copyOfOtherTable.end(); i != e; ++i) { + if (!other.isBackgroundTile(i)) return false; + } + return true; +} + + +template +template +inline bool +RootNode::hasSameConfiguration(const RootNode&) +{ + std::vector thisDims, otherDims; + RootNode::getNodeLog2Dims(thisDims); + RootNode::getNodeLog2Dims(otherDims); + return (thisDims == otherDims); +} + + +template +template +inline void +RootNode::enforceSameConfiguration(const RootNode&) +{ + std::vector thisDims, otherDims; + RootNode::getNodeLog2Dims(thisDims); + RootNode::getNodeLog2Dims(otherDims); + if (thisDims != otherDims) { + std::ostringstream ostr; + ostr << "grids have incompatible configurations (" << thisDims[0]; + for (size_t i = 1, N = thisDims.size(); i < N; ++i) ostr << " x " << thisDims[i]; + ostr << " vs. " << otherDims[0]; + for (size_t i = 1, N = otherDims.size(); i < N; ++i) ostr << " x " << otherDims[i]; + ostr << ")"; + OPENVDB_THROW(TypeError, ostr.str()); + } +} + + +template +template +inline bool +RootNode::hasCompatibleValueType(const RootNode&) +{ + using OtherValueType = typename OtherChildType::ValueType; + return CanConvertType::value; +} + + +template +template +inline void +RootNode::enforceCompatibleValueTypes(const RootNode&) +{ + using OtherValueType = typename OtherChildType::ValueType; + if (!CanConvertType::value) { + std::ostringstream ostr; + ostr << "values of type " << typeNameAsString() + << " cannot be converted to type " << typeNameAsString(); + OPENVDB_THROW(TypeError, ostr.str()); + } +} + + +//////////////////////////////////////// + + +template +inline Index64 +RootNode::memUsage() const +{ + Index64 sum = sizeof(*this); + for (MapCIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + if (const ChildT *child = iter->second.child) { + sum += child->memUsage(); + } + } + return sum; +} + + +template +inline void +RootNode::clear() +{ + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + delete i->second.child; + } + mTable.clear(); +} + + +template +inline void +RootNode::evalActiveBoundingBox(CoordBBox& bbox, bool visitVoxels) const +{ + for (MapCIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + if (const ChildT *child = iter->second.child) { + child->evalActiveBoundingBox(bbox, visitVoxels); + } else if (isTileOn(iter)) { + bbox.expand(iter->first, ChildT::DIM); + } + } +} + + +template +inline Index +RootNode::getChildCount() const { + Index sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) ++sum; + } + return sum; +} + + +template +inline Index +RootNode::getTileCount() const +{ + Index sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isTile(i)) ++sum; + } + return sum; +} + + +template +inline Index +RootNode::getActiveTileCount() const +{ + Index sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isTileOn(i)) ++sum; + } + return sum; +} + + +template +inline Index +RootNode::getInactiveTileCount() const +{ + Index sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isTileOff(i)) ++sum; + } + return sum; +} + + +template +inline Index32 +RootNode::leafCount() const +{ + Index32 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) sum += getChild(i).leafCount(); + } + return sum; +} + + +template +inline Index32 +RootNode::nonLeafCount() const +{ + Index32 sum = 1; + if (ChildT::LEVEL != 0) { + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) sum += getChild(i).nonLeafCount(); + } + } + return sum; +} + + +template +inline Index64 +RootNode::onVoxelCount() const +{ + Index64 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) { + sum += getChild(i).onVoxelCount(); + } else if (isTileOn(i)) { + sum += ChildT::NUM_VOXELS; + } + } + return sum; +} + + +template +inline Index64 +RootNode::offVoxelCount() const +{ + Index64 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) { + sum += getChild(i).offVoxelCount(); + } else if (isTileOff(i) && !this->isBackgroundTile(i)) { + sum += ChildT::NUM_VOXELS; + } + } + return sum; +} + + +template +inline Index64 +RootNode::onLeafVoxelCount() const +{ + Index64 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) sum += getChild(i).onLeafVoxelCount(); + } + return sum; +} + + +template +inline Index64 +RootNode::offLeafVoxelCount() const +{ + Index64 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) sum += getChild(i).offLeafVoxelCount(); + } + return sum; +} + +template +inline Index64 +RootNode::onTileCount() const +{ + Index64 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) { + sum += getChild(i).onTileCount(); + } else if (isTileOn(i)) { + sum += 1; + } + } + return sum; +} + +template +inline void +RootNode::nodeCount(std::vector &vec) const +{ + assert(vec.size() > LEVEL); + Index32 sum = 0; + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) { + ++sum; + getChild(i).nodeCount(vec); + } + } + vec[LEVEL] = 1;// one root node + vec[ChildNodeType::LEVEL] = sum; +} + +//////////////////////////////////////// + + +template +inline bool +RootNode::isValueOn(const Coord& xyz) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTileOff(iter)) return false; + return isTileOn(iter) ? true : getChild(iter).isValueOn(xyz); +} + +template +inline bool +RootNode::hasActiveTiles() const +{ + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i) ? getChild(i).hasActiveTiles() : getTile(i).active) return true; + } + return false; +} + +template +template +inline bool +RootNode::isValueOnAndCache(const Coord& xyz, AccessorT& acc) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTileOff(iter)) return false; + if (isTileOn(iter)) return true; + acc.insert(xyz, &getChild(iter)); + return getChild(iter).isValueOnAndCache(xyz, acc); +} + + +template +inline const typename ChildT::ValueType& +RootNode::getValue(const Coord& xyz) const +{ + MapCIter iter = this->findCoord(xyz); + return iter == mTable.end() ? mBackground + : (isTile(iter) ? getTile(iter).value : getChild(iter).getValue(xyz)); +} + +template +template +inline const typename ChildT::ValueType& +RootNode::getValueAndCache(const Coord& xyz, AccessorT& acc) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end()) return mBackground; + if (isChild(iter)) { + acc.insert(xyz, &getChild(iter)); + return getChild(iter).getValueAndCache(xyz, acc); + } + return getTile(iter).value; +} + + +template +inline int +RootNode::getValueDepth(const Coord& xyz) const +{ + MapCIter iter = this->findCoord(xyz); + return iter == mTable.end() ? -1 + : (isTile(iter) ? 0 : int(LEVEL) - int(getChild(iter).getValueLevel(xyz))); +} + +template +template +inline int +RootNode::getValueDepthAndCache(const Coord& xyz, AccessorT& acc) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end()) return -1; + if (isTile(iter)) return 0; + acc.insert(xyz, &getChild(iter)); + return int(LEVEL) - int(getChild(iter).getValueLevelAndCache(xyz, acc)); +} + + +template +inline void +RootNode::setValueOff(const Coord& xyz) +{ + MapIter iter = this->findCoord(xyz); + if (iter != mTable.end() && !isTileOff(iter)) { + if (isTileOn(iter)) { + setChild(iter, *new ChildT(xyz, getTile(iter).value, /*active=*/true)); + } + getChild(iter).setValueOff(xyz); + } +} + + +template +inline void +RootNode::setActiveState(const Coord& xyz, bool on) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (on) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else { + // Nothing to do; (x, y, z) is background and therefore already inactive. + } + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (on != getTile(iter).active) { + child = new ChildT(xyz, getTile(iter).value, !on); + setChild(iter, *child); + } + if (child) child->setActiveState(xyz, on); +} + +template +template +inline void +RootNode::setActiveStateAndCache(const Coord& xyz, bool on, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (on) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else { + // Nothing to do; (x, y, z) is background and therefore already inactive. + } + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (on != getTile(iter).active) { + child = new ChildT(xyz, getTile(iter).value, !on); + setChild(iter, *child); + } + if (child) { + acc.insert(xyz, child); + child->setActiveStateAndCache(xyz, on, acc); + } +} + + +template +inline void +RootNode::setValueOff(const Coord& xyz, const ValueType& value) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (!math::isExactlyEqual(mBackground, value)) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (isTileOn(iter) || !math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) child->setValueOff(xyz, value); +} + +template +template +inline void +RootNode::setValueOffAndCache(const Coord& xyz, const ValueType& value, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (!math::isExactlyEqual(mBackground, value)) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (isTileOn(iter) || !math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) { + acc.insert(xyz, child); + child->setValueOffAndCache(xyz, value, acc); + } +} + + +template +inline void +RootNode::setValueOn(const Coord& xyz, const ValueType& value) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (isTileOff(iter) || !math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) child->setValueOn(xyz, value); +} + +template +template +inline void +RootNode::setValueAndCache(const Coord& xyz, const ValueType& value, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (isTileOff(iter) || !math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) { + acc.insert(xyz, child); + child->setValueAndCache(xyz, value, acc); + } +} + + +template +inline void +RootNode::setValueOnly(const Coord& xyz, const ValueType& value) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (!math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) child->setValueOnly(xyz, value); +} + +template +template +inline void +RootNode::setValueOnlyAndCache(const Coord& xyz, const ValueType& value, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else if (!math::isExactlyEqual(getTile(iter).value, value)) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + if (child) { + acc.insert(xyz, child); + child->setValueOnlyAndCache(xyz, value, acc); + } +} + + +template +template +inline void +RootNode::modifyValue(const Coord& xyz, const ModifyOp& op) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + // Need to create a child if the tile is inactive, + // in order to activate voxel (x, y, z). + bool createChild = isTileOff(iter); + if (!createChild) { + // Need to create a child if applying the functor + // to the tile value produces a different value. + const ValueType& tileVal = getTile(iter).value; + ValueType modifiedVal = tileVal; + op(modifiedVal); + createChild = !math::isExactlyEqual(tileVal, modifiedVal); + } + if (createChild) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + } + if (child) child->modifyValue(xyz, op); +} + +template +template +inline void +RootNode::modifyValueAndCache(const Coord& xyz, const ModifyOp& op, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + // Need to create a child if the tile is inactive, + // in order to activate voxel (x, y, z). + bool createChild = isTileOff(iter); + if (!createChild) { + // Need to create a child if applying the functor + // to the tile value produces a different value. + const ValueType& tileVal = getTile(iter).value; + ValueType modifiedVal = tileVal; + op(modifiedVal); + createChild = !math::isExactlyEqual(tileVal, modifiedVal); + } + if (createChild) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + } + if (child) { + acc.insert(xyz, child); + child->modifyValueAndCache(xyz, op, acc); + } +} + + +template +template +inline void +RootNode::modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + const Tile& tile = getTile(iter); + bool modifiedState = tile.active; + ValueType modifiedVal = tile.value; + op(modifiedVal, modifiedState); + // Need to create a child if applying the functor to the tile + // produces a different value or active state. + if (modifiedState != tile.active || !math::isExactlyEqual(modifiedVal, tile.value)) { + child = new ChildT(xyz, tile.value, tile.active); + setChild(iter, *child); + } + } + if (child) child->modifyValueAndActiveState(xyz, op); +} + +template +template +inline void +RootNode::modifyValueAndActiveStateAndCache( + const Coord& xyz, const ModifyOp& op, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + const Tile& tile = getTile(iter); + bool modifiedState = tile.active; + ValueType modifiedVal = tile.value; + op(modifiedVal, modifiedState); + // Need to create a child if applying the functor to the tile + // produces a different value or active state. + if (modifiedState != tile.active || !math::isExactlyEqual(modifiedVal, tile.value)) { + child = new ChildT(xyz, tile.value, tile.active); + setChild(iter, *child); + } + } + if (child) { + acc.insert(xyz, child); + child->modifyValueAndActiveStateAndCache(xyz, op, acc); + } +} + + +template +inline bool +RootNode::probeValue(const Coord& xyz, ValueType& value) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + value = mBackground; + return false; + } else if (isChild(iter)) { + return getChild(iter).probeValue(xyz, value); + } + value = getTile(iter).value; + return isTileOn(iter); +} + +template +template +inline bool +RootNode::probeValueAndCache(const Coord& xyz, ValueType& value, AccessorT& acc) const +{ + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + value = mBackground; + return false; + } else if (isChild(iter)) { + acc.insert(xyz, &getChild(iter)); + return getChild(iter).probeValueAndCache(xyz, value, acc); + } + value = getTile(iter).value; + return isTileOn(iter); +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::fill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + if (bbox.empty()) return; + + // Iterate over the fill region in axis-aligned, tile-sized chunks. + // (The first and last chunks along each axis might be smaller than a tile.) + Coord xyz, tileMax; + for (int x = bbox.min().x(); x <= bbox.max().x(); x = tileMax.x() + 1) { + xyz.setX(x); + for (int y = bbox.min().y(); y <= bbox.max().y(); y = tileMax.y() + 1) { + xyz.setY(y); + for (int z = bbox.min().z(); z <= bbox.max().z(); z = tileMax.z() + 1) { + xyz.setZ(z); + + // Get the bounds of the tile that contains voxel (x, y, z). + Coord tileMin = coordToKey(xyz); + tileMax = tileMin.offsetBy(ChildT::DIM - 1); + + if (xyz != tileMin || Coord::lessThan(bbox.max(), tileMax)) { + // If the box defined by (xyz, bbox.max()) doesn't completely enclose + // the tile to which xyz belongs, create a child node (or retrieve + // the existing one). + ChildT* child = nullptr; + MapIter iter = this->findKey(tileMin); + if (iter == mTable.end()) { + // No child or tile exists. Create a child and initialize it + // with the background value. + child = new ChildT(xyz, mBackground); + mTable[tileMin] = NodeStruct(*child); + } else if (isTile(iter)) { + // Replace the tile with a newly-created child that is filled + // with the tile's value and active state. + const Tile& tile = getTile(iter); + child = new ChildT(xyz, tile.value, tile.active); + mTable[tileMin] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } + // Forward the fill request to the child. + if (child) { + const Coord tmp = Coord::minComponent(bbox.max(), tileMax); + child->fill(CoordBBox(xyz, tmp), value, active); + } + } else { + // If the box given by (xyz, bbox.max()) completely encloses + // the tile to which xyz belongs, create the tile (if it + // doesn't already exist) and give it the fill value. + MapIter iter = this->findOrAddCoord(tileMin); + setTile(iter, Tile(value, active)); + } + } + } + } +} + + +template +inline void +RootNode::denseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + if (bbox.empty()) return; + + if (active && mTable.empty()) { + // If this tree is empty, then a sparse fill followed by (threaded) + // densification of active tiles is the more efficient approach. + sparseFill(bbox, value, active); + voxelizeActiveTiles(/*threaded=*/true); + return; + } + + // Iterate over the fill region in axis-aligned, tile-sized chunks. + // (The first and last chunks along each axis might be smaller than a tile.) + Coord xyz, tileMin, tileMax; + for (int x = bbox.min().x(); x <= bbox.max().x(); x = tileMax.x() + 1) { + xyz.setX(x); + for (int y = bbox.min().y(); y <= bbox.max().y(); y = tileMax.y() + 1) { + xyz.setY(y); + for (int z = bbox.min().z(); z <= bbox.max().z(); z = tileMax.z() + 1) { + xyz.setZ(z); + + // Get the bounds of the tile that contains voxel (x, y, z). + tileMin = coordToKey(xyz); + tileMax = tileMin.offsetBy(ChildT::DIM - 1); + + // Retrieve the table entry for the tile that contains xyz, + // or, if there is no table entry, add a background tile. + const auto iter = findOrAddCoord(tileMin); + + if (isTile(iter)) { + // If the table entry is a tile, replace it with a child node + // that is filled with the tile's value and active state. + const auto& tile = getTile(iter); + auto* child = new ChildT{tileMin, tile.value, tile.active}; + setChild(iter, *child); + } + // Forward the fill request to the child. + getChild(iter).denseFill(bbox, value, active); + } + } + } +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::voxelizeActiveTiles(bool threaded) +{ + // There is little point in threading over the root table since each tile + // spans a huge index space (by default 4096^3) and hence we expect few + // active tiles if any at all. In fact, you're very likely to run out of + // memory if this method is called on a tree with root-level active tiles! + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (this->isTileOff(i)) continue; + ChildT* child = i->second.child; + if (child == nullptr) { + // If this table entry is an active tile (i.e., not off and not a child node), + // replace it with a child node filled with active tiles of the same value. + child = new ChildT{i->first, this->getTile(i).value, true}; + i->second.child = child; + } + child->voxelizeActiveTiles(threaded); + } +} + + +//////////////////////////////////////// + + +template +template +inline void +RootNode::copyToDense(const CoordBBox& bbox, DenseT& dense) const +{ + using DenseValueType = typename DenseT::ValueType; + + const size_t xStride = dense.xStride(), yStride = dense.yStride(), zStride = dense.zStride(); + const Coord& min = dense.bbox().min(); + CoordBBox nodeBBox; + for (Coord xyz = bbox.min(); xyz[0] <= bbox.max()[0]; xyz[0] = nodeBBox.max()[0] + 1) { + for (xyz[1] = bbox.min()[1]; xyz[1] <= bbox.max()[1]; xyz[1] = nodeBBox.max()[1] + 1) { + for (xyz[2] = bbox.min()[2]; xyz[2] <= bbox.max()[2]; xyz[2] = nodeBBox.max()[2] + 1) { + + // Get the coordinate bbox of the child node that contains voxel xyz. + nodeBBox = CoordBBox::createCube(coordToKey(xyz), ChildT::DIM); + + // Get the coordinate bbox of the interection of inBBox and nodeBBox + CoordBBox sub(xyz, Coord::minComponent(bbox.max(), nodeBBox.max())); + + MapCIter iter = this->findKey(nodeBBox.min()); + if (iter != mTable.end() && isChild(iter)) {//is a child + getChild(iter).copyToDense(sub, dense); + } else {//is background or a tile value + const ValueType value = iter==mTable.end() ? mBackground : getTile(iter).value; + sub.translate(-min); + DenseValueType* a0 = dense.data() + zStride*sub.min()[2]; + for (Int32 x=sub.min()[0], ex=sub.max()[0]+1; x +inline bool +RootNode::writeTopology(std::ostream& os, bool toHalf) const +{ + if (!toHalf) { + os.write(reinterpret_cast(&mBackground), sizeof(ValueType)); + } else { + ValueType truncatedVal = io::truncateRealToHalf(mBackground); + os.write(reinterpret_cast(&truncatedVal), sizeof(ValueType)); + } + io::setGridBackgroundValuePtr(os, &mBackground); + + const Index numTiles = this->getTileCount(), numChildren = this->getChildCount(); + os.write(reinterpret_cast(&numTiles), sizeof(Index)); + os.write(reinterpret_cast(&numChildren), sizeof(Index)); + + if (numTiles == 0 && numChildren == 0) return false; + + // Write tiles. + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) continue; + os.write(reinterpret_cast(i->first.asPointer()), 3 * sizeof(Int32)); + os.write(reinterpret_cast(&getTile(i).value), sizeof(ValueType)); + os.write(reinterpret_cast(&getTile(i).active), sizeof(bool)); + } + // Write child nodes. + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isTile(i)) continue; + os.write(reinterpret_cast(i->first.asPointer()), 3 * sizeof(Int32)); + getChild(i).writeTopology(os, toHalf); + } + + return true; // not empty +} + + +template +inline bool +RootNode::readTopology(std::istream& is, bool fromHalf) +{ + // Delete the existing tree. + this->clear(); + + if (io::getFormatVersion(is) < OPENVDB_FILE_VERSION_ROOTNODE_MAP) { + // Read and convert an older-format RootNode. + + // For backward compatibility with older file formats, read both + // outside and inside background values. + is.read(reinterpret_cast(&mBackground), sizeof(ValueType)); + ValueType inside; + is.read(reinterpret_cast(&inside), sizeof(ValueType)); + + io::setGridBackgroundValuePtr(is, &mBackground); + + // Read the index range. + Coord rangeMin, rangeMax; + is.read(reinterpret_cast(rangeMin.asPointer()), 3 * sizeof(Int32)); + is.read(reinterpret_cast(rangeMax.asPointer()), 3 * sizeof(Int32)); + + this->initTable(); + Index tableSize = 0, log2Dim[4] = { 0, 0, 0, 0 }; + Int32 offset[3]; + for (int i = 0; i < 3; ++i) { + offset[i] = rangeMin[i] >> ChildT::TOTAL; + rangeMin[i] = offset[i] << ChildT::TOTAL; + log2Dim[i] = 1 + util::FindHighestOn((rangeMax[i] >> ChildT::TOTAL) - offset[i]); + tableSize += log2Dim[i]; + rangeMax[i] = (((1 << log2Dim[i]) + offset[i]) << ChildT::TOTAL) - 1; + } + log2Dim[3] = log2Dim[1] + log2Dim[2]; + tableSize = 1U << tableSize; + + // Read masks. + util::RootNodeMask childMask(tableSize), valueMask(tableSize); + childMask.load(is); + valueMask.load(is); + + // Read child nodes/values. + for (Index i = 0; i < tableSize; ++i) { + // Compute origin = offset2coord(i). + Index n = i; + Coord origin; + origin[0] = (n >> log2Dim[3]) + offset[0]; + n &= (1U << log2Dim[3]) - 1; + origin[1] = (n >> log2Dim[2]) + offset[1]; + origin[2] = (n & ((1U << log2Dim[2]) - 1)) + offset[1]; + origin <<= ChildT::TOTAL; + + if (childMask.isOn(i)) { + // Read in and insert a child node. + ChildT* child = new ChildT(PartialCreate(), origin, mBackground); + child->readTopology(is); + mTable[origin] = NodeStruct(*child); + } else { + // Read in a tile value and insert a tile, but only if the value + // is either active or non-background. + ValueType value; + is.read(reinterpret_cast(&value), sizeof(ValueType)); + if (valueMask.isOn(i) || (!math::isApproxEqual(value, mBackground))) { + mTable[origin] = NodeStruct(Tile(value, valueMask.isOn(i))); + } + } + } + return true; + } + + // Read a RootNode that was stored in the current format. + + is.read(reinterpret_cast(&mBackground), sizeof(ValueType)); + io::setGridBackgroundValuePtr(is, &mBackground); + + Index numTiles = 0, numChildren = 0; + is.read(reinterpret_cast(&numTiles), sizeof(Index)); + is.read(reinterpret_cast(&numChildren), sizeof(Index)); + + if (numTiles == 0 && numChildren == 0) return false; + + Int32 vec[3]; + ValueType value; + bool active; + + // Read tiles. + for (Index n = 0; n < numTiles; ++n) { + is.read(reinterpret_cast(vec), 3 * sizeof(Int32)); + is.read(reinterpret_cast(&value), sizeof(ValueType)); + is.read(reinterpret_cast(&active), sizeof(bool)); + mTable[Coord(vec)] = NodeStruct(Tile(value, active)); + } + + // Read child nodes. + for (Index n = 0; n < numChildren; ++n) { + is.read(reinterpret_cast(vec), 3 * sizeof(Int32)); + Coord origin(vec); + ChildT* child = new ChildT(PartialCreate(), origin, mBackground); + child->readTopology(is, fromHalf); + mTable[Coord(vec)] = NodeStruct(*child); + } + + return true; // not empty +} + + +template +inline void +RootNode::writeBuffers(std::ostream& os, bool toHalf) const +{ + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) getChild(i).writeBuffers(os, toHalf); + } +} + + +template +inline void +RootNode::readBuffers(std::istream& is, bool fromHalf) +{ + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) getChild(i).readBuffers(is, fromHalf); + } +} + + +template +inline void +RootNode::readBuffers(std::istream& is, const CoordBBox& clipBBox, bool fromHalf) +{ + const Tile bgTile(mBackground, /*active=*/false); + + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (isChild(i)) { + // Stream in and clip the branch rooted at this child. + // (We can't skip over children that lie outside the clipping region, + // because buffers are serialized in depth-first order and need to be + // unserialized in the same order.) + ChildT& child = getChild(i); + child.readBuffers(is, clipBBox, fromHalf); + } + } + // Clip root-level tiles and prune children that were clipped. + this->clip(clipBBox); +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::clip(const CoordBBox& clipBBox) +{ + const Tile bgTile(mBackground, /*active=*/false); + + // Iterate over a copy of this node's table so that we can modify the original. + // (Copying the table copies child node pointers, not the nodes themselves.) + MapType copyOfTable(mTable); + for (MapIter i = copyOfTable.begin(), e = copyOfTable.end(); i != e; ++i) { + const Coord& xyz = i->first; // tile or child origin + CoordBBox tileBBox(xyz, xyz.offsetBy(ChildT::DIM - 1)); // tile or child bounds + if (!clipBBox.hasOverlap(tileBBox)) { + // This table entry lies completely outside the clipping region. Delete it. + setTile(this->findCoord(xyz), bgTile); // delete any existing child node first + mTable.erase(xyz); + } else if (!clipBBox.isInside(tileBBox)) { + // This table entry does not lie completely inside the clipping region + // and must be clipped. + if (isChild(i)) { + getChild(i).clip(clipBBox, mBackground); + } else { + // Replace this tile with a background tile, then fill the clip region + // with the tile's original value. (This might create a child branch.) + tileBBox.intersect(clipBBox); + const Tile& origTile = getTile(i); + setTile(this->findCoord(xyz), bgTile); + this->sparseFill(tileBBox, origTile.value, origTile.active); + } + } else { + // This table entry lies completely inside the clipping region. Leave it intact. + } + } + this->prune(); // also erases root-level background tiles +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::prune(const ValueType& tolerance) +{ + bool state = false; + ValueType value = zeroVal(); + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (this->isTile(i)) continue; + this->getChild(i).prune(tolerance); + if (this->getChild(i).isConstant(value, state, tolerance)) { + this->setTile(i, Tile(value, state)); + } + } + this->eraseBackgroundTiles(); +} + + +//////////////////////////////////////// + + +template +template +inline NodeT* +RootNode::stealNode(const Coord& xyz, const ValueType& value, bool state) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTile(iter)) return nullptr; + return (std::is_same::value) + ? reinterpret_cast(&stealChild(iter, Tile(value, state))) + : getChild(iter).template stealNode(xyz, value, state); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +inline void +RootNode::addLeaf(LeafNodeType* leaf) +{ + if (leaf == nullptr) return; + ChildT* child = nullptr; + const Coord& xyz = leaf->origin(); + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, mBackground, false); + } else { + child = reinterpret_cast(leaf); + } + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + if (ChildT::LEVEL>0) { + child = &getChild(iter); + } else { + child = reinterpret_cast(leaf); + setChild(iter, *child);//this also deletes the existing child node + } + } else {//tile + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + } else { + child = reinterpret_cast(leaf); + } + setChild(iter, *child); + } + child->addLeaf(leaf); +} + + +template +template +inline void +RootNode::addLeafAndCache(LeafNodeType* leaf, AccessorT& acc) +{ + if (leaf == nullptr) return; + ChildT* child = nullptr; + const Coord& xyz = leaf->origin(); + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, mBackground, false); + } else { + child = reinterpret_cast(leaf); + } + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + if (ChildT::LEVEL>0) { + child = &getChild(iter); + } else { + child = reinterpret_cast(leaf); + setChild(iter, *child);//this also deletes the existing child node + } + } else {//tile + if (ChildT::LEVEL>0) { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + } else { + child = reinterpret_cast(leaf); + } + setChild(iter, *child); + } + acc.insert(xyz, child); + child->addLeafAndCache(leaf, acc); +} + +template +inline bool +RootNode::addChild(ChildT* child) +{ + if (!child) return false; + const Coord& xyz = child->origin(); + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) {//background + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else {//child or tile + setChild(iter, *child);//this also deletes the existing child node + } + return true; +} + +template +inline void +RootNode::addTile(const Coord& xyz, const ValueType& value, bool state) +{ + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) {//background + mTable[this->coordToKey(xyz)] = NodeStruct(Tile(value, state)); + } else {//child or tile + setTile(iter, Tile(value, state));//this also deletes the existing child node + } +} + +template +inline void +RootNode::addTile(Index level, const Coord& xyz, + const ValueType& value, bool state) +{ + if (LEVEL >= level) { + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) {//background + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, mBackground, false); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + child->addTile(level, xyz, value, state); + } else { + mTable[this->coordToKey(xyz)] = NodeStruct(Tile(value, state)); + } + } else if (isChild(iter)) {//child + if (LEVEL > level) { + getChild(iter).addTile(level, xyz, value, state); + } else { + setTile(iter, Tile(value, state));//this also deletes the existing child node + } + } else {//tile + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + child->addTile(level, xyz, value, state); + } else { + setTile(iter, Tile(value, state)); + } + } + } +} + + +template +template +inline void +RootNode::addTileAndCache(Index level, const Coord& xyz, const ValueType& value, + bool state, AccessorT& acc) +{ + if (LEVEL >= level) { + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) {//background + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, mBackground, false); + acc.insert(xyz, child); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + child->addTileAndCache(level, xyz, value, state, acc); + } else { + mTable[this->coordToKey(xyz)] = NodeStruct(Tile(value, state)); + } + } else if (isChild(iter)) {//child + if (LEVEL > level) { + ChildT* child = &getChild(iter); + acc.insert(xyz, child); + child->addTileAndCache(level, xyz, value, state, acc); + } else { + setTile(iter, Tile(value, state));//this also deletes the existing child node + } + } else {//tile + if (LEVEL > level) { + ChildT* child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + acc.insert(xyz, child); + setChild(iter, *child); + child->addTileAndCache(level, xyz, value, state, acc); + } else { + setTile(iter, Tile(value, state)); + } + } + } +} + + +//////////////////////////////////////// + + +template +inline typename ChildT::LeafNodeType* +RootNode::touchLeaf(const Coord& xyz) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground, false); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + return child->touchLeaf(xyz); +} + + +template +template +inline typename ChildT::LeafNodeType* +RootNode::touchLeafAndCache(const Coord& xyz, AccessorT& acc) +{ + ChildT* child = nullptr; + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end()) { + child = new ChildT(xyz, mBackground, false); + mTable[this->coordToKey(xyz)] = NodeStruct(*child); + } else if (isChild(iter)) { + child = &getChild(iter); + } else { + child = new ChildT(xyz, getTile(iter).value, isTileOn(iter)); + setChild(iter, *child); + } + acc.insert(xyz, child); + return child->touchLeafAndCache(xyz, acc); +} + + +//////////////////////////////////////// + + +template +template +inline NodeT* +RootNode::probeNode(const Coord& xyz) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTile(iter)) return nullptr; + ChildT* child = &getChild(iter); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline const NodeT* +RootNode::probeConstNode(const Coord& xyz) const +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTile(iter)) return nullptr; + const ChildT* child = &getChild(iter); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeConstNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +inline typename ChildT::LeafNodeType* +RootNode::probeLeaf(const Coord& xyz) +{ + return this->template probeNode(xyz); +} + + +template +inline const typename ChildT::LeafNodeType* +RootNode::probeConstLeaf(const Coord& xyz) const +{ + return this->template probeConstNode(xyz); +} + + +template +template +inline typename ChildT::LeafNodeType* +RootNode::probeLeafAndCache(const Coord& xyz, AccessorT& acc) +{ + return this->template probeNodeAndCache(xyz, acc); +} + + +template +template +inline const typename ChildT::LeafNodeType* +RootNode::probeConstLeafAndCache(const Coord& xyz, AccessorT& acc) const +{ + return this->template probeConstNodeAndCache(xyz, acc); +} + + +template +template +inline const typename ChildT::LeafNodeType* +RootNode::probeLeafAndCache(const Coord& xyz, AccessorT& acc) const +{ + return this->probeConstLeafAndCache(xyz, acc); +} + + +template +template +inline NodeT* +RootNode::probeNodeAndCache(const Coord& xyz, AccessorT& acc) +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + MapIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTile(iter)) return nullptr; + ChildT* child = &getChild(iter); + acc.insert(xyz, child); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeNodeAndCache(xyz, acc); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +template +template +inline const NodeT* +RootNode::probeConstNodeAndCache(const Coord& xyz, AccessorT& acc) const +{ + if ((NodeT::LEVEL == ChildT::LEVEL && !(std::is_same::value)) || + NodeT::LEVEL > ChildT::LEVEL) return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + MapCIter iter = this->findCoord(xyz); + if (iter == mTable.end() || isTile(iter)) return nullptr; + const ChildT* child = &getChild(iter); + acc.insert(xyz, child); + return (std::is_same::value) + ? reinterpret_cast(child) + : child->template probeConstNodeAndCache(xyz, acc); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + +template +template +inline void +RootNode::getNodes(ArrayT& array) +{ + using NodePtr = typename ArrayT::value_type; + static_assert(std::is_pointer::value, + "argument to getNodes() must be a pointer array"); + using NodeType = typename std::remove_pointer::type; + using NonConstNodeType = typename std::remove_const::type; + using result = typename boost::mpl::contains::type; + static_assert(result::value, "can't extract non-const nodes from a const tree"); + using ArrayChildT = typename std::conditional< + std::is_const::value, const ChildT, ChildT>::type; + + for (MapIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + if (ChildT* child = iter->second.child) { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.push_back(reinterpret_cast(iter->second.child)); + } else { + child->getNodes(array);//descent + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + } +} + +template +template +inline void +RootNode::getNodes(ArrayT& array) const +{ + using NodePtr = typename ArrayT::value_type; + static_assert(std::is_pointer::value, + "argument to getNodes() must be a pointer array"); + using NodeType = typename std::remove_pointer::type; + static_assert(std::is_const::value, + "argument to getNodes() must be an array of const node pointers"); + using NonConstNodeType = typename std::remove_const::type; + using result = typename boost::mpl::contains::type; + static_assert(result::value, "can't extract non-const nodes from a const tree"); + + for (MapCIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + if (const ChildNodeType *child = iter->second.child) { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.push_back(reinterpret_cast(iter->second.child)); + } else { + child->getNodes(array);//descent + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + } +} + +//////////////////////////////////////// + +template +template +inline void +RootNode::stealNodes(ArrayT& array, const ValueType& value, bool state) +{ + using NodePtr = typename ArrayT::value_type; + static_assert(std::is_pointer::value, + "argument to stealNodes() must be a pointer array"); + using NodeType = typename std::remove_pointer::type; + using NonConstNodeType = typename std::remove_const::type; + using result = typename boost::mpl::contains::type; + static_assert(result::value, "can't extract non-const nodes from a const tree"); + using ArrayChildT = typename std::conditional< + std::is_const::value, const ChildT, ChildT>::type; + + for (MapIter iter=mTable.begin(); iter!=mTable.end(); ++iter) { + if (ChildT* child = iter->second.child) { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (std::is_same::value) { + array.push_back(reinterpret_cast(&stealChild(iter, Tile(value, state)))); + } else { + child->stealNodes(array, value, state);//descent + } + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +RootNode::merge(RootNode& other) +{ + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + + switch (Policy) { + + default: + case MERGE_ACTIVE_STATES: + for (MapIter i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + MapIter j = mTable.find(i->first); + if (other.isChild(i)) { + if (j == mTable.end()) { // insert other node's child + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + mTable[i->first] = NodeStruct(child); + } else if (isTile(j)) { + if (isTileOff(j)) { // replace inactive tile with other node's child + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + setChild(j, child); + } + } else { // merge both child nodes + getChild(j).template merge(getChild(i), + other.mBackground, mBackground); + } + } else if (other.isTileOn(i)) { + if (j == mTable.end()) { // insert other node's active tile + mTable[i->first] = i->second; + } else if (!isTileOn(j)) { + // Replace anything except an active tile with the other node's active tile. + setTile(j, Tile(other.getTile(i).value, true)); + } + } + } + break; + + case MERGE_NODES: + for (MapIter i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + MapIter j = mTable.find(i->first); + if (other.isChild(i)) { + if (j == mTable.end()) { // insert other node's child + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + mTable[i->first] = NodeStruct(child); + } else if (isTile(j)) { // replace tile with other node's child + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + setChild(j, child); + } else { // merge both child nodes + getChild(j).template merge( + getChild(i), other.mBackground, mBackground); + } + } + } + break; + + case MERGE_ACTIVE_STATES_AND_NODES: + for (MapIter i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + MapIter j = mTable.find(i->first); + if (other.isChild(i)) { + if (j == mTable.end()) { + // Steal and insert the other node's child. + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + mTable[i->first] = NodeStruct(child); + } else if (isTile(j)) { + // Replace this node's tile with the other node's child. + ChildNodeType& child = stealChild(i, Tile(other.mBackground, /*on=*/false)); + child.resetBackground(other.mBackground, mBackground); + const Tile tile = getTile(j); + setChild(j, child); + if (tile.active) { + // Merge the other node's child with this node's active tile. + child.template merge( + tile.value, tile.active); + } + } else /*if (isChild(j))*/ { + // Merge the other node's child into this node's child. + getChild(j).template merge(getChild(i), + other.mBackground, mBackground); + } + } else if (other.isTileOn(i)) { + if (j == mTable.end()) { + // Insert a copy of the other node's active tile. + mTable[i->first] = i->second; + } else if (isTileOff(j)) { + // Replace this node's inactive tile with a copy of the other's active tile. + setTile(j, Tile(other.getTile(i).value, true)); + } else if (isChild(j)) { + // Merge the other node's active tile into this node's child. + const Tile& tile = getTile(i); + getChild(j).template merge( + tile.value, tile.active); + } + } // else if (other.isTileOff(i)) {} // ignore the other node's inactive tiles + } + break; + } + + // Empty the other tree so as not to leave it in a partially cannibalized state. + other.clear(); + + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END +} + + +//////////////////////////////////////// + + +template +template +inline void +RootNode::topologyUnion(const RootNode& other) +{ + using OtherRootT = RootNode; + using OtherCIterT = typename OtherRootT::MapCIter; + + enforceSameConfiguration(other); + + for (OtherCIterT i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + MapIter j = mTable.find(i->first); + if (other.isChild(i)) { + if (j == mTable.end()) { // create child branch with identical topology + mTable[i->first] = NodeStruct( + *(new ChildT(other.getChild(i), mBackground, TopologyCopy()))); + } else if (this->isChild(j)) { // union with child branch + this->getChild(j).topologyUnion(other.getChild(i)); + } else {// this is a tile so replace it with a child branch with identical topology + ChildT* child = new ChildT( + other.getChild(i), this->getTile(j).value, TopologyCopy()); + if (this->isTileOn(j)) child->setValuesOn();//this is an active tile + this->setChild(j, *child); + } + } else if (other.isTileOn(i)) { // other is an active tile + if (j == mTable.end()) { // insert an active tile + mTable[i->first] = NodeStruct(Tile(mBackground, true)); + } else if (this->isChild(j)) { + this->getChild(j).setValuesOn(); + } else if (this->isTileOff(j)) { + this->setTile(j, Tile(this->getTile(j).value, true)); + } + } + } +} + +template +template +inline void +RootNode::topologyIntersection(const RootNode& other) +{ + using OtherRootT = RootNode; + using OtherCIterT = typename OtherRootT::MapCIter; + + enforceSameConfiguration(other); + + std::set tmp;//keys to erase + for (MapIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + OtherCIterT j = other.mTable.find(i->first); + if (this->isChild(i)) { + if (j == other.mTable.end() || other.isTileOff(j)) { + tmp.insert(i->first);//delete child branch + } else if (other.isChild(j)) { // intersect with child branch + this->getChild(i).topologyIntersection(other.getChild(j), mBackground); + } + } else if (this->isTileOn(i)) { + if (j == other.mTable.end() || other.isTileOff(j)) { + this->setTile(i, Tile(this->getTile(i).value, false));//turn inactive + } else if (other.isChild(j)) { //replace with a child branch with identical topology + ChildT* child = + new ChildT(other.getChild(j), this->getTile(i).value, TopologyCopy()); + this->setChild(i, *child); + } + } + } + for (std::set::iterator i = tmp.begin(), e = tmp.end(); i != e; ++i) { + MapIter it = this->findCoord(*i); + setTile(it, Tile()); // delete any existing child node first + mTable.erase(it); + } +} + +template +template +inline void +RootNode::topologyDifference(const RootNode& other) +{ + using OtherRootT = RootNode; + using OtherCIterT = typename OtherRootT::MapCIter; + + enforceSameConfiguration(other); + + for (OtherCIterT i = other.mTable.begin(), e = other.mTable.end(); i != e; ++i) { + MapIter j = mTable.find(i->first); + if (other.isChild(i)) { + if (j == mTable.end() || this->isTileOff(j)) { + //do nothing + } else if (this->isChild(j)) { // difference with child branch + this->getChild(j).topologyDifference(other.getChild(i), mBackground); + } else if (this->isTileOn(j)) { + // this is an active tile so create a child node and descent + ChildT* child = new ChildT(j->first, this->getTile(j).value, true); + child->topologyDifference(other.getChild(i), mBackground); + this->setChild(j, *child); + } + } else if (other.isTileOn(i)) { // other is an active tile + if (j == mTable.end() || this->isTileOff(j)) { + // do nothing + } else if (this->isChild(j)) { + setTile(j, Tile()); // delete any existing child node first + mTable.erase(j); + } else if (this->isTileOn(j)) { + this->setTile(j, Tile(this->getTile(j).value, false)); + } + } + } +} + +//////////////////////////////////////// + + +template +template +inline void +RootNode::combine(RootNode& other, CombineOp& op, bool prune) +{ + CombineArgs args; + + CoordSet keys; + this->insertKeys(keys); + other.insertKeys(keys); + + for (CoordSetCIter i = keys.begin(), e = keys.end(); i != e; ++i) { + MapIter iter = findOrAddCoord(*i), otherIter = other.findOrAddCoord(*i); + if (isTile(iter) && isTile(otherIter)) { + // Both this node and the other node have constant values (tiles). + // Combine the two values and store the result as this node's new tile value. + op(args.setARef(getTile(iter).value) + .setAIsActive(isTileOn(iter)) + .setBRef(getTile(otherIter).value) + .setBIsActive(isTileOn(otherIter))); + setTile(iter, Tile(args.result(), args.resultIsActive())); + + } else if (isChild(iter) && isTile(otherIter)) { + // Combine this node's child with the other node's constant value. + ChildT& child = getChild(iter); + child.combine(getTile(otherIter).value, isTileOn(otherIter), op); + + } else if (isTile(iter) && isChild(otherIter)) { + // Combine this node's constant value with the other node's child, + // but use a new functor in which the A and B values are swapped, + // since the constant value is the A value, not the B value. + SwappedCombineOp swappedOp(op); + ChildT& child = getChild(otherIter); + child.combine(getTile(iter).value, isTileOn(iter), swappedOp); + + // Steal the other node's child. + setChild(iter, stealChild(otherIter, Tile())); + + } else /*if (isChild(iter) && isChild(otherIter))*/ { + // Combine this node's child with the other node's child. + ChildT &child = getChild(iter), &otherChild = getChild(otherIter); + child.combine(otherChild, op); + } + if (prune && isChild(iter)) getChild(iter).prune(); + } + + // Combine background values. + op(args.setARef(mBackground).setBRef(other.mBackground)); + mBackground = args.result(); + + // Empty the other tree so as not to leave it in a partially cannibalized state. + other.clear(); +} + + +//////////////////////////////////////// + + +// This helper class is a friend of RootNode and is needed so that combine2 +// can be specialized for compatible and incompatible pairs of RootNode types. +template +struct RootNodeCombineHelper +{ + static inline void combine2(RootT& self, const RootT&, const OtherRootT& other1, + CombineOp&, bool) + { + // If the two root nodes have different configurations or incompatible ValueTypes, + // throw an exception. + self.enforceSameConfiguration(other1); + self.enforceCompatibleValueTypes(other1); + // One of the above two tests should throw, so we should never get here: + std::ostringstream ostr; + ostr << "cannot combine a " << typeid(OtherRootT).name() + << " into a " << typeid(RootT).name(); + OPENVDB_THROW(TypeError, ostr.str()); + } +}; + +// Specialization for root nodes of compatible types +template +struct RootNodeCombineHelper +{ + static inline void combine2(RootT& self, const RootT& other0, const OtherRootT& other1, + CombineOp& op, bool prune) + { + self.doCombine2(other0, other1, op, prune); + } +}; + + +template +template +inline void +RootNode::combine2(const RootNode& other0, const OtherRootNode& other1, + CombineOp& op, bool prune) +{ + using OtherValueType = typename OtherRootNode::ValueType; + static const bool compatible = (SameConfiguration::value + && CanConvertType::value); + RootNodeCombineHelper::combine2( + *this, other0, other1, op, prune); +} + + +template +template +inline void +RootNode::doCombine2(const RootNode& other0, const OtherRootNode& other1, + CombineOp& op, bool prune) +{ + enforceSameConfiguration(other1); + + using OtherValueT = typename OtherRootNode::ValueType; + using OtherTileT = typename OtherRootNode::Tile; + using OtherNodeStructT = typename OtherRootNode::NodeStruct; + using OtherMapCIterT = typename OtherRootNode::MapCIter; + + CombineArgs args; + + CoordSet keys; + other0.insertKeys(keys); + other1.insertKeys(keys); + + const NodeStruct bg0(Tile(other0.mBackground, /*active=*/false)); + const OtherNodeStructT bg1(OtherTileT(other1.mBackground, /*active=*/false)); + + for (CoordSetCIter i = keys.begin(), e = keys.end(); i != e; ++i) { + MapIter thisIter = this->findOrAddCoord(*i); + MapCIter iter0 = other0.findKey(*i); + OtherMapCIterT iter1 = other1.findKey(*i); + const NodeStruct& ns0 = (iter0 != other0.mTable.end()) ? iter0->second : bg0; + const OtherNodeStructT& ns1 = (iter1 != other1.mTable.end()) ? iter1->second : bg1; + if (ns0.isTile() && ns1.isTile()) { + // Both input nodes have constant values (tiles). + // Combine the two values and add a new tile to this node with the result. + op(args.setARef(ns0.tile.value) + .setAIsActive(ns0.isTileOn()) + .setBRef(ns1.tile.value) + .setBIsActive(ns1.isTileOn())); + setTile(thisIter, Tile(args.result(), args.resultIsActive())); + } else { + if (!isChild(thisIter)) { + // Add a new child with the same coordinates, etc. as the other node's child. + const Coord& childOrigin = + ns0.isChild() ? ns0.child->origin() : ns1.child->origin(); + setChild(thisIter, *(new ChildT(childOrigin, getTile(thisIter).value))); + } + ChildT& child = getChild(thisIter); + + if (ns0.isTile()) { + // Combine node1's child with node0's constant value + // and write the result into this node's child. + child.combine2(ns0.tile.value, *ns1.child, ns0.isTileOn(), op); + } else if (ns1.isTile()) { + // Combine node0's child with node1's constant value + // and write the result into this node's child. + child.combine2(*ns0.child, ns1.tile.value, ns1.isTileOn(), op); + } else { + // Combine node0's child with node1's child + // and write the result into this node's child. + child.combine2(*ns0.child, *ns1.child, op); + } + } + if (prune && isChild(thisIter)) getChild(thisIter).prune(); + } + + // Combine background values. + op(args.setARef(other0.mBackground).setBRef(other1.mBackground)); + mBackground = args.result(); +} + + +//////////////////////////////////////// + + +template +template +inline void +RootNode::visitActiveBBox(BBoxOp& op) const +{ + const bool descent = op.template descent(); + for (MapCIter i = mTable.begin(), e = mTable.end(); i != e; ++i) { + if (this->isTileOff(i)) continue; + if (this->isChild(i) && descent) { + this->getChild(i).visitActiveBBox(op); + } else { +#ifdef _MSC_VER + op.operator()(CoordBBox::createCube(i->first, ChildT::DIM)); +#else + op.template operator()(CoordBBox::createCube(i->first, ChildT::DIM)); +#endif + } + } +} + + +template +template +inline void +RootNode::visit(VisitorOp& op) +{ + doVisit(*this, op); +} + + +template +template +inline void +RootNode::visit(VisitorOp& op) const +{ + doVisit(*this, op); +} + + +template +template +inline void +RootNode::doVisit(RootNodeT& self, VisitorOp& op) +{ + typename RootNodeT::ValueType val; + for (ChildAllIterT iter = self.beginChildAll(); iter; ++iter) { + if (op(iter)) continue; + if (typename ChildAllIterT::ChildNodeType* child = iter.probeChild(val)) { + child->visit(op); + } + } +} + + +//////////////////////////////////////// + + +template +template +inline void +RootNode::visit2(OtherRootNodeType& other, VisitorOp& op) +{ + doVisit2(*this, other, op); +} + + +template +template +inline void +RootNode::visit2(OtherRootNodeType& other, VisitorOp& op) const +{ + doVisit2(*this, other, op); +} + + +template +template< + typename RootNodeT, + typename OtherRootNodeT, + typename VisitorOp, + typename ChildAllIterT, + typename OtherChildAllIterT> +inline void +RootNode::doVisit2(RootNodeT& self, OtherRootNodeT& other, VisitorOp& op) +{ + enforceSameConfiguration(other); + + typename RootNodeT::ValueType val; + typename OtherRootNodeT::ValueType otherVal; + + // The two nodes are required to have corresponding table entries, + // but since that might require background tiles to be added to one or both, + // and the nodes might be const, we operate on shallow copies of the nodes instead. + RootNodeT copyOfSelf(self.mBackground); + copyOfSelf.mTable = self.mTable; + OtherRootNodeT copyOfOther(other.mBackground); + copyOfOther.mTable = other.mTable; + + // Add background tiles to both nodes as needed. + CoordSet keys; + self.insertKeys(keys); + other.insertKeys(keys); + for (CoordSetCIter i = keys.begin(), e = keys.end(); i != e; ++i) { + copyOfSelf.findOrAddCoord(*i); + copyOfOther.findOrAddCoord(*i); + } + + ChildAllIterT iter = copyOfSelf.beginChildAll(); + OtherChildAllIterT otherIter = copyOfOther.beginChildAll(); + + for ( ; iter && otherIter; ++iter, ++otherIter) + { + const size_t skipBranch = static_cast(op(iter, otherIter)); + + typename ChildAllIterT::ChildNodeType* child = + (skipBranch & 1U) ? nullptr : iter.probeChild(val); + typename OtherChildAllIterT::ChildNodeType* otherChild = + (skipBranch & 2U) ? nullptr : otherIter.probeChild(otherVal); + + if (child != nullptr && otherChild != nullptr) { + child->visit2Node(*otherChild, op); + } else if (child != nullptr) { + child->visit2(otherIter, op); + } else if (otherChild != nullptr) { + otherChild->visit2(iter, op, /*otherIsLHS=*/true); + } + } + // Remove any background tiles that were added above, + // as well as any that were created by the visitors. + copyOfSelf.eraseBackgroundTiles(); + copyOfOther.eraseBackgroundTiles(); + + // If either input node is non-const, replace its table with + // the (possibly modified) copy. + self.resetTable(copyOfSelf.mTable); + other.resetTable(copyOfOther.mTable); +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_ROOTNODE_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/Tree.h b/openvdb/tree/Tree.h new file mode 100644 index 00000000..1b391c54 --- /dev/null +++ b/openvdb/tree/Tree.h @@ -0,0 +1,2353 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tree/Tree.h + +#ifndef OPENVDB_TREE_TREE_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_TREE_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include "RootNode.h" +#include "InternalNode.h" +#include "LeafNode.h" +#include "TreeIterator.h" +#include "ValueAccessor.h" +#include +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +/// @brief Base class for typed trees +class OPENVDB_API TreeBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + TreeBase() = default; + TreeBase(const TreeBase&) = default; + TreeBase& operator=(const TreeBase&) = delete; // disallow assignment + virtual ~TreeBase() = default; + + /// Return the name of this tree's type. + virtual const Name& type() const = 0; + + /// Return the name of the type of a voxel's value (e.g., "float" or "vec3d"). + virtual Name valueType() const = 0; + + /// Return a pointer to a deep copy of this tree + virtual TreeBase::Ptr copy() const = 0; + + // + // Tree methods + // + /// @brief Return this tree's background value wrapped as metadata. + /// @note Query the metadata object for the value's type. + virtual Metadata::Ptr getBackgroundValue() const { return Metadata::Ptr(); } + + /// @brief Return in @a bbox the axis-aligned bounding box of all + /// leaf nodes and active tiles. + /// @details This is faster than calling evalActiveVoxelBoundingBox, + /// which visits the individual active voxels, and hence + /// evalLeafBoundingBox produces a less tight, i.e. approximate, bbox. + /// @return @c false if the bounding box is empty (in which case + /// the bbox is set to its default value). + virtual bool evalLeafBoundingBox(CoordBBox& bbox) const = 0; + + /// @brief Return in @a dim the dimensions of the axis-aligned bounding box + /// of all leaf nodes. + /// @return @c false if the bounding box is empty. + virtual bool evalLeafDim(Coord& dim) const = 0; + + /// @brief Return in @a bbox the axis-aligned bounding box of all + /// active voxels and tiles. + /// @details This method produces a more accurate, i.e. tighter, + /// bounding box than evalLeafBoundingBox which is approximate but + /// faster. + /// @return @c false if the bounding box is empty (in which case + /// the bbox is set to its default value). + virtual bool evalActiveVoxelBoundingBox(CoordBBox& bbox) const = 0; + + /// @brief Return in @a dim the dimensions of the axis-aligned bounding box of all + /// active voxels. This is a tighter bounding box than the leaf node bounding box. + /// @return @c false if the bounding box is empty. + virtual bool evalActiveVoxelDim(Coord& dim) const = 0; + + virtual void getIndexRange(CoordBBox& bbox) const = 0; + + /// @brief Replace with background tiles any nodes whose voxel buffers + /// have not yet been allocated. + /// @details Typically, unallocated nodes are leaf nodes whose voxel buffers + /// are not yet resident in memory because delayed loading is in effect. + /// @sa readNonresidentBuffers, io::File::open + virtual void clipUnallocatedNodes() = 0; +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + /// Return the total number of unallocated leaf nodes residing in this tree. + virtual Index32 unallocatedLeafCount() const = 0; +#endif + + + // + // Statistics + // + /// @brief Return the depth of this tree. + /// + /// A tree with only a root node and leaf nodes has depth 2, for example. + virtual Index treeDepth() const = 0; + /// Return the number of leaf nodes. + virtual Index32 leafCount() const = 0; +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// Return a vector with node counts. The number of nodes of type NodeType + /// is given as element NodeType::LEVEL in the return vector. Thus, the size + /// of this vector corresponds to the height (or depth) of this tree. + virtual std::vector nodeCount() const = 0; +#endif + /// Return the number of non-leaf nodes. + virtual Index32 nonLeafCount() const = 0; + /// Return the number of active voxels stored in leaf nodes. + virtual Index64 activeLeafVoxelCount() const = 0; + /// Return the number of inactive voxels stored in leaf nodes. + virtual Index64 inactiveLeafVoxelCount() const = 0; + /// Return the total number of active voxels. + virtual Index64 activeVoxelCount() const = 0; + /// Return the number of inactive voxels within the bounding box of all active voxels. + virtual Index64 inactiveVoxelCount() const = 0; + /// Return the total number of active tiles. + virtual Index64 activeTileCount() const = 0; + + /// Return the total amount of memory in bytes occupied by this tree. + virtual Index64 memUsage() const { return 0; } + + + // + // I/O methods + // + /// @brief Read the tree topology from a stream. + /// + /// This will read the tree structure and tile values, but not voxel data. + virtual void readTopology(std::istream&, bool saveFloatAsHalf = false); + /// @brief Write the tree topology to a stream. + /// + /// This will write the tree structure and tile values, but not voxel data. + virtual void writeTopology(std::ostream&, bool saveFloatAsHalf = false) const; + + /// Read all data buffers for this tree. + virtual void readBuffers(std::istream&, bool saveFloatAsHalf = false) = 0; + /// Read all of this tree's data buffers that intersect the given bounding box. + virtual void readBuffers(std::istream&, const CoordBBox&, bool saveFloatAsHalf = false) = 0; + /// @brief Read all of this tree's data buffers that are not yet resident in memory + /// (because delayed loading is in effect). + /// @details If this tree was read from a memory-mapped file, this operation + /// disconnects the tree from the file. + /// @sa clipUnallocatedNodes, io::File::open, io::MappedFile + virtual void readNonresidentBuffers() const = 0; + /// Write out all the data buffers for this tree. + virtual void writeBuffers(std::ostream&, bool saveFloatAsHalf = false) const = 0; + + /// @brief Print statistics, memory usage and other information about this tree. + /// @param os a stream to which to write textual information + /// @param verboseLevel 1: print tree configuration only; + /// 2: include node and voxel statistics; + /// 3: include memory usage; + /// 4: include minimum and maximum voxel values + /// @warning @a verboseLevel 4 forces loading of any unallocated nodes. + virtual void print(std::ostream& os = std::cout, int verboseLevel = 1) const; +}; + + +//////////////////////////////////////// + + +template +class Tree: public TreeBase +{ +public: + using Ptr = SharedPtr; + using ConstPtr = SharedPtr; + + using RootNodeType = _RootNodeType; + using ValueType = typename RootNodeType::ValueType; + using BuildType = typename RootNodeType::BuildType; + using LeafNodeType = typename RootNodeType::LeafNodeType; + + static const Index DEPTH = RootNodeType::LEVEL + 1; + + /// @brief ValueConverter::Type is the type of a tree having the same + /// hierarchy as this tree but a different value type, T. + /// + /// For example, FloatTree::ValueConverter::Type is equivalent to DoubleTree. + /// @note If the source tree type is a template argument, it might be necessary + /// to write "typename SourceTree::template ValueConverter::Type". + template + struct ValueConverter { + using Type = Tree::Type>; + }; + + + Tree() {} + + Tree& operator=(const Tree&) = delete; // disallow assignment + + /// Deep copy constructor + Tree(const Tree& other): TreeBase(other), mRoot(other.mRoot) + { + } + + /// @brief Value conversion deep copy constructor + /// + /// Deep copy a tree of the same configuration as this tree type but a different + /// ValueType, casting the other tree's values to this tree's ValueType. + /// @throw TypeError if the other tree's configuration doesn't match this tree's + /// or if this tree's ValueType is not constructible from the other tree's ValueType. + template + explicit Tree(const Tree& other): TreeBase(other), mRoot(other.root()) + { + } + + /// @brief Topology copy constructor from a tree of a different type + /// + /// Copy the structure, i.e., the active states of tiles and voxels, of another + /// tree of a possibly different type, but don't copy any tile or voxel values. + /// Instead, initialize tiles and voxels with the given active and inactive values. + /// @param other a tree having (possibly) a different ValueType + /// @param inactiveValue background value for this tree, and the value to which + /// all inactive tiles and voxels are initialized + /// @param activeValue value to which active tiles and voxels are initialized + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + template + Tree(const OtherTreeType& other, + const ValueType& inactiveValue, + const ValueType& activeValue, + TopologyCopy): + TreeBase(other), + mRoot(other.root(), inactiveValue, activeValue, TopologyCopy()) + { + } + + /// @brief Topology copy constructor from a tree of a different type + /// + /// @note This topology copy constructor is generally faster than + /// the one that takes both a foreground and a background value. + /// + /// Copy the structure, i.e., the active states of tiles and voxels, of another + /// tree of a possibly different type, but don't copy any tile or voxel values. + /// Instead, initialize tiles and voxels with the given background value. + /// @param other a tree having (possibly) a different ValueType + /// @param background the value to which tiles and voxels are initialized + /// @throw TypeError if the other tree's configuration doesn't match this tree's. + template + Tree(const OtherTreeType& other, const ValueType& background, TopologyCopy): + TreeBase(other), + mRoot(other.root(), background, TopologyCopy()) + { + } + + /// Empty tree constructor + Tree(const ValueType& background): mRoot(background) {} + + ~Tree() override { this->clear(); releaseAllAccessors(); } + + /// Return a pointer to a deep copy of this tree + TreeBase::Ptr copy() const override { return TreeBase::Ptr(new Tree(*this)); } + + /// Return the name of the type of a voxel's value (e.g., "float" or "vec3d") + Name valueType() const override { return typeNameAsString(); } + + /// Return the name of this type of tree. + static const Name& treeType(); + /// Return the name of this type of tree. + const Name& type() const override { return this->treeType(); } + + bool operator==(const Tree&) const { OPENVDB_THROW(NotImplementedError, ""); } + bool operator!=(const Tree&) const { OPENVDB_THROW(NotImplementedError, ""); } + + //@{ + /// Return this tree's root node. + RootNodeType& root() { return mRoot; } + const RootNodeType& root() const { return mRoot; } + //@} + + + // + // Tree methods + // + /// @brief Return @c true if the given tree has the same node and active value + /// topology as this tree, whether or not it has the same @c ValueType. + template + bool hasSameTopology(const Tree& other) const; + + bool evalLeafBoundingBox(CoordBBox& bbox) const override; + bool evalActiveVoxelBoundingBox(CoordBBox& bbox) const override; + bool evalActiveVoxelDim(Coord& dim) const override; + bool evalLeafDim(Coord& dim) const override; + + /// @brief Traverse the type hierarchy of nodes, and return, in @a dims, a list + /// of the Log2Dims of nodes in order from RootNode to LeafNode. + /// @note Because RootNodes are resizable, the RootNode Log2Dim is 0 for all trees. + static void getNodeLog2Dims(std::vector& dims); + + + // + // I/O methods + // + /// @brief Read the tree topology from a stream. + /// + /// This will read the tree structure and tile values, but not voxel data. + void readTopology(std::istream&, bool saveFloatAsHalf = false) override; + /// @brief Write the tree topology to a stream. + /// + /// This will write the tree structure and tile values, but not voxel data. + void writeTopology(std::ostream&, bool saveFloatAsHalf = false) const override; + /// Read all data buffers for this tree. + void readBuffers(std::istream&, bool saveFloatAsHalf = false) override; + /// Read all of this tree's data buffers that intersect the given bounding box. + void readBuffers(std::istream&, const CoordBBox&, bool saveFloatAsHalf = false) override; + /// @brief Read all of this tree's data buffers that are not yet resident in memory + /// (because delayed loading is in effect). + /// @details If this tree was read from a memory-mapped file, this operation + /// disconnects the tree from the file. + /// @sa clipUnallocatedNodes, io::File::open, io::MappedFile + void readNonresidentBuffers() const override; + /// Write out all data buffers for this tree. + void writeBuffers(std::ostream&, bool saveFloatAsHalf = false) const override; + + void print(std::ostream& os = std::cout, int verboseLevel = 1) const override; + + + // + // Statistics + // + /// @brief Return the depth of this tree. + /// + /// A tree with only a root node and leaf nodes has depth 2, for example. + Index treeDepth() const override { return DEPTH; } + /// Return the number of leaf nodes. + Index32 leafCount() const override { return mRoot.leafCount(); } +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + /// Return a vector with node counts. The number of nodes of type NodeType + /// is given as element NodeType::LEVEL in the return vector. Thus, the size + /// of this vector corresponds to the height (or depth) of this tree. + std::vector nodeCount() const override + { + std::vector vec(DEPTH, 0); + mRoot.nodeCount( vec ); + return vec;// Named Return Value Optimization + } +#endif + /// Return the number of non-leaf nodes. + Index32 nonLeafCount() const override { return mRoot.nonLeafCount(); } + /// Return the number of active voxels stored in leaf nodes. + Index64 activeLeafVoxelCount() const override { return mRoot.onLeafVoxelCount(); } + /// Return the number of inactive voxels stored in leaf nodes. + Index64 inactiveLeafVoxelCount() const override { return mRoot.offLeafVoxelCount(); } + /// Return the total number of active voxels. + Index64 activeVoxelCount() const override { return mRoot.onVoxelCount(); } + /// Return the number of inactive voxels within the bounding box of all active voxels. + Index64 inactiveVoxelCount() const override; + /// Return the total number of active tiles. + Index64 activeTileCount() const override { return mRoot.onTileCount(); } + + /// Return the minimum and maximum active values in this tree. + void evalMinMax(ValueType &min, ValueType &max) const; + + Index64 memUsage() const override { return sizeof(*this) + mRoot.memUsage(); } + + + // + // Voxel access methods (using signed indexing) + // + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const; + /// @brief Return the value of the voxel at the given coordinates + /// and update the given accessor's node cache. + template const ValueType& getValue(const Coord& xyz, AccessT&) const; + + /// @brief Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides. + /// @details If (x, y, z) isn't explicitly represented in the tree (i.e., it is + /// implicitly a background voxel), return -1. + int getValueDepth(const Coord& xyz) const; + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on); + /// Set the value of the voxel at the given coordinates but don't change its active state. + void setValueOnly(const Coord& xyz, const ValueType& value); + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValueOn(const Coord& xyz, const ValueType& value); + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value); + /// @brief Set the value of the voxel at the given coordinates, mark the voxel as active, + /// and update the given accessor's node cache. + template void setValue(const Coord& xyz, const ValueType& value, AccessT&); + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz); + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value); + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details Provided that the functor can be inlined, this is typically + /// significantly faster than calling getValue() followed by setValueOn(). + /// @param xyz the coordinates of a voxel whose value is to be modified + /// @param op a functor of the form void op(ValueType&) const that modifies + /// its argument in place + /// @par Example: + /// @code + /// Coord xyz(1, 0, -2); + /// // Multiply the value of a voxel by a constant and mark the voxel as active. + /// floatTree.modifyValue(xyz, [](float& f) { f *= 0.25; }); // C++11 + /// // Set the value of a voxel to the maximum of its current value and 0.25, + /// // and mark the voxel as active. + /// floatTree.modifyValue(xyz, [](float& f) { f = std::max(f, 0.25f); }); // C++11 + /// @endcode + /// @note The functor is not guaranteed to be called only once. + /// @see tools::foreach() + template + void modifyValue(const Coord& xyz, const ModifyOp& op); + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details Provided that the functor can be inlined, this is typically + /// significantly faster than calling getValue() followed by setValue(). + /// @param xyz the coordinates of a voxel to be modified + /// @param op a functor of the form void op(ValueType&, bool&) const that + /// modifies its arguments, a voxel's value and active state, in place + /// @par Example: + /// @code + /// Coord xyz(1, 0, -2); + /// // Multiply the value of a voxel by a constant and mark the voxel as inactive. + /// floatTree.modifyValueAndActiveState(xyz, + /// [](float& f, bool& b) { f *= 0.25; b = false; }); // C++11 + /// // Set the value of a voxel to the maximum of its current value and 0.25, + /// // but don't change the voxel's active state. + /// floatTree.modifyValueAndActiveState(xyz, + /// [](float& f, bool&) { f = std::max(f, 0.25f); }); // C++11 + /// @endcode + /// @note The functor is not guaranteed to be called only once. + /// @see tools::foreach() + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op); + + /// @brief Get the value of the voxel at the given coordinates. + /// @return @c true if the value is active. + bool probeValue(const Coord& xyz, ValueType& value) const; + + /// Return @c true if the value at the given coordinates is active. + bool isValueOn(const Coord& xyz) const { return mRoot.isValueOn(xyz); } + /// Return @c true if the value at the given coordinates is inactive. + bool isValueOff(const Coord& xyz) const { return !this->isValueOn(xyz); } + /// Return @c true if this tree has any active tiles. + bool hasActiveTiles() const { return mRoot.hasActiveTiles(); } + + /// Set all voxels that lie outside the given axis-aligned box to the background. + void clip(const CoordBBox&); + /// @brief Replace with background tiles any nodes whose voxel buffers + /// have not yet been allocated. + /// @details Typically, unallocated nodes are leaf nodes whose voxel buffers + /// are not yet resident in memory because delayed loading is in effect. + /// @sa readNonresidentBuffers, io::File::open + void clipUnallocatedNodes() override; + +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + /// Return the total number of unallocated leaf nodes residing in this tree. + Index32 unallocatedLeafCount() const override; +#endif + + //@{ + /// @brief Set all voxels within a given axis-aligned box to a constant value. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box + /// @param value the value to which to set voxels within the box + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive + /// @note This operation generates a sparse, but not always optimally sparse, + /// representation of the filled box. Follow fill operations with a prune() + /// operation for optimal sparseness. + void sparseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + void fill(const CoordBBox& bbox, const ValueType& value, bool active = true) + { + this->sparseFill(bbox, value, active); + } + //@} + + /// @brief Set all voxels within a given axis-aligned box to a constant value + /// and ensure that those voxels are all represented at the leaf level. + /// @param bbox inclusive coordinates of opposite corners of an axis-aligned box. + /// @param value the value to which to set voxels within the box. + /// @param active if true, mark voxels within the box as active, + /// otherwise mark them as inactive. + /// @sa voxelizeActiveTiles() + void denseFill(const CoordBBox& bbox, const ValueType& value, bool active = true); + + /// @brief Densify active tiles, i.e., replace them with leaf-level active voxels. + /// + /// @param threaded if true, this operation is multi-threaded (over the internal nodes). + /// + /// @warning This method can explode the tree's memory footprint, especially if it + /// contains active tiles at the upper levels (in particular the root level)! + /// + /// @sa denseFill() + void voxelizeActiveTiles(bool threaded = true); + + /// @brief Reduce the memory footprint of this tree by replacing with tiles + /// any nodes whose values are all the same (optionally to within a tolerance) + /// and have the same active state. + /// @warning Will soon be deprecated! + void prune(const ValueType& tolerance = zeroVal()) + { + this->clearAllAccessors(); + mRoot.prune(tolerance); + } + + /// @brief Add the given leaf node to this tree, creating a new branch if necessary. + /// If a leaf node with the same origin already exists, replace it. + /// + /// @warning Ownership of the leaf is transferred to the tree so + /// the client code should not attempt to delete the leaf pointer! + void addLeaf(LeafNodeType* leaf) { assert(leaf); mRoot.addLeaf(leaf); } + + /// @brief Add a tile containing voxel (x, y, z) at the specified tree level, + /// creating a new branch if necessary. Delete any existing lower-level nodes + /// that contain (x, y, z). + /// @note @a level must be less than this tree's depth. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool active); + + /// @brief Return a pointer to the node of type @c NodeT that contains voxel (x, y, z) + /// and replace it with a tile of the specified value and state. + /// If no such node exists, leave the tree unchanged and return @c nullptr. + /// @note The caller takes ownership of the node and is responsible for deleting it. + template + NodeT* stealNode(const Coord& xyz, const ValueType& value, bool active); + + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, create one that preserves the values and + /// active states of all voxels. + /// @details Use this method to preallocate a static tree topology over which to + /// safely perform multithreaded processing. + LeafNodeType* touchLeaf(const Coord& xyz); + + //@{ + /// @brief Return a pointer to the node of type @c NodeType that contains + /// voxel (x, y, z). If no such node exists, return @c nullptr. + template NodeType* probeNode(const Coord& xyz); + template const NodeType* probeConstNode(const Coord& xyz) const; + template const NodeType* probeNode(const Coord& xyz) const; + //@} + + //@{ + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, return @c nullptr. + LeafNodeType* probeLeaf(const Coord& xyz); + const LeafNodeType* probeConstLeaf(const Coord& xyz) const; + const LeafNodeType* probeLeaf(const Coord& xyz) const { return this->probeConstLeaf(xyz); } + //@} + + //@{ + /// @brief Adds all nodes of a certain type to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...; // the type of node to be added to the array + /// void push_back(value_type nodePtr); // add a node to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.getNodes(array); + /// @endcode + template void getNodes(ArrayT& array) { mRoot.getNodes(array); } + template void getNodes(ArrayT& array) const { mRoot.getNodes(array); } + //@} + + /// @brief Steals all nodes of a certain type from the tree and + /// adds them to a container with the following API: + /// @code + /// struct ArrayT { + /// using value_type = ...; // the type of node to be added to the array + /// void push_back(value_type nodePtr); // add a node to the array + /// }; + /// @endcode + /// @details An example of a wrapper around a c-style array is: + /// @code + /// struct MyArray { + /// using value_type = LeafType*; + /// value_type* ptr; + /// MyArray(value_type* array) : ptr(array) {} + /// void push_back(value_type leaf) { *ptr++ = leaf; } + ///}; + /// @endcode + /// @details An example that constructs a list of pointer to all leaf nodes is: + /// @code + /// std::vector array;//most std contains have the required API + /// array.reserve(tree.leafCount());//this is a fast preallocation. + /// tree.stealNodes(array); + /// @endcode + template + void stealNodes(ArrayT& array) { this->clearAllAccessors(); mRoot.stealNodes(array); } + template + void stealNodes(ArrayT& array, const ValueType& value, bool state) + { + this->clearAllAccessors(); + mRoot.stealNodes(array, value, state); + } + + // + // Aux methods + // + /// @brief Return @c true if this tree contains no nodes other than + /// the root node and no tiles other than background tiles. + bool empty() const { return mRoot.empty(); } + + /// Remove all tiles from this tree and all nodes other than the root node. + void clear(); + + /// Clear all registered accessors. + void clearAllAccessors(); + + //@{ + /// @brief Register an accessor for this tree. Registered accessors are + /// automatically cleared whenever one of this tree's nodes is deleted. + void attachAccessor(ValueAccessorBase&) const; + void attachAccessor(ValueAccessorBase&) const; + //@} + + //@{ + /// Dummy implementations + void attachAccessor(ValueAccessorBase&) const {} + void attachAccessor(ValueAccessorBase&) const {} + //@} + + //@{ + /// Deregister an accessor so that it is no longer automatically cleared. + void releaseAccessor(ValueAccessorBase&) const; + void releaseAccessor(ValueAccessorBase&) const; + //@} + + //@{ + /// Dummy implementations + void releaseAccessor(ValueAccessorBase&) const {} + void releaseAccessor(ValueAccessorBase&) const {} + //@} + + /// @brief Return this tree's background value wrapped as metadata. + /// @note Query the metadata object for the value's type. + Metadata::Ptr getBackgroundValue() const override; + + /// @brief Return this tree's background value. + /// + /// @note Use tools::changeBackground to efficiently modify the + /// background values. Else use tree.root().setBackground, which + /// is serial and hence slower. + const ValueType& background() const { return mRoot.background(); } + + /// Min and max are both inclusive. + void getIndexRange(CoordBBox& bbox) const override { mRoot.getIndexRange(bbox); } + + /// @brief Efficiently merge another tree into this tree using one of several schemes. + /// @details This operation is primarily intended to combine trees that are mostly + /// non-overlapping (for example, intermediate trees from computations that are + /// parallelized across disjoint regions of space). + /// @note This operation is not guaranteed to produce an optimally sparse tree. + /// Follow merge() with prune() for optimal sparseness. + /// @warning This operation always empties the other tree. + void merge(Tree& other, MergePolicy = MERGE_ACTIVE_STATES); + + /// @brief Union this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. + /// @details The resulting state of a value is active if the corresponding value + /// was already active OR if it is active in the other tree. Also, a resulting + /// value maps to a voxel if the corresponding value already mapped to a voxel + /// OR if it is a voxel in the other tree. Thus, a resulting value can only + /// map to a tile if the corresponding value already mapped to a tile + /// AND if it is a tile value in other tree. + /// + /// @note This operation modifies only active states, not values. + /// Specifically, active tiles and voxels in this tree are not changed, and + /// tiles or voxels that were inactive in this tree but active in the other tree + /// are marked as active in this tree but left with their original values. + template + void topologyUnion(const Tree& other); + + /// @brief Intersects this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. + /// @details The resulting state of a value is active only if the corresponding + /// value was already active AND if it is active in the other tree. Also, a + /// resulting value maps to a voxel if the corresponding value + /// already mapped to an active voxel in either of the two grids + /// and it maps to an active tile or voxel in the other grid. + /// + /// @note This operation can delete branches in this grid if they + /// overlap with inactive tiles in the other grid. Likewise active + /// voxels can be turned into unactive voxels resulting in leaf + /// nodes with no active values. Thus, it is recommended to + /// subsequently call tools::pruneInactive. + template + void topologyIntersection(const Tree& other); + + /// @brief Difference this tree's set of active values with the active values + /// of the other tree, whose @c ValueType may be different. So a + /// resulting voxel will be active only if the original voxel is + /// active in this tree and inactive in the other tree. + /// + /// @note This operation can delete branches in this grid if they + /// overlap with active tiles in the other grid. Likewise active + /// voxels can be turned into inactive voxels resulting in leaf + /// nodes with no active values. Thus, it is recommended to + /// subsequently call tools::pruneInactive. + template + void topologyDifference(const Tree& other); + + /// For a given function @c f, use sparse traversal to compute f(this, other) + /// over all corresponding pairs of values (tile or voxel) of this tree and the other tree + /// and store the result in this tree. + /// This method is typically more space-efficient than the two-tree combine2(), + /// since it moves rather than copies nodes from the other tree into this tree. + /// @note This operation always empties the other tree. + /// @param other a tree of the same type as this tree + /// @param op a functor of the form void op(const T& a, const T& b, T& result), + /// where @c T is this tree's @c ValueType, that computes + /// result = f(a, b) + /// @param prune if true, prune the resulting tree one branch at a time (this is usually + /// more space-efficient than pruning the entire tree in one pass) + /// + /// @par Example: + /// Compute the per-voxel difference between two floating-point trees, + /// @c aTree and @c bTree, and store the result in @c aTree (leaving @c bTree empty). + /// @code + /// { + /// struct Local { + /// static inline void diff(const float& a, const float& b, float& result) { + /// result = a - b; + /// } + /// }; + /// aTree.combine(bTree, Local::diff); + /// } + /// @endcode + /// + /// @par Example: + /// Compute f * a + (1 - f) * b over all voxels of two floating-point trees, + /// @c aTree and @c bTree, and store the result in @c aTree (leaving @c bTree empty). + /// @code + /// namespace { + /// struct Blend { + /// Blend(float f): frac(f) {} + /// inline void operator()(const float& a, const float& b, float& result) const { + /// result = frac * a + (1.0 - frac) * b; + /// } + /// float frac; + /// }; + /// } + /// { + /// aTree.combine(bTree, Blend(0.25)); // 0.25 * a + 0.75 * b + /// } + /// @endcode + template + void combine(Tree& other, CombineOp& op, bool prune = false); +#ifndef _MSC_VER + template + void combine(Tree& other, const CombineOp& op, bool prune = false); +#endif + + /// Like combine(), but with + /// @param other a tree of the same type as this tree + /// @param op a functor of the form void op(CombineArgs& args) that + /// computes args.setResult(f(args.a(), args.b())) and, optionally, + /// args.setResultIsActive(g(args.aIsActive(), args.bIsActive())) + /// for some functions @c f and @c g + /// @param prune if true, prune the resulting tree one branch at a time (this is usually + /// more space-efficient than pruning the entire tree in one pass) + /// + /// This variant passes not only the @em a and @em b values but also the active states + /// of the @em a and @em b values to the functor, which may then return, by calling + /// @c args.setResultIsActive(), a computed active state for the result value. + /// By default, the result is active if either the @em a or the @em b value is active. + /// + /// @see openvdb/Types.h for the definition of the CombineArgs struct. + /// + /// @par Example: + /// Replace voxel values in floating-point @c aTree with corresponding values + /// from floating-point @c bTree (leaving @c bTree empty) wherever the @c bTree + /// values are larger. Also, preserve the active states of any transferred values. + /// @code + /// { + /// struct Local { + /// static inline void max(CombineArgs& args) { + /// if (args.b() > args.a()) { + /// // Transfer the B value and its active state. + /// args.setResult(args.b()); + /// args.setResultIsActive(args.bIsActive()); + /// } else { + /// // Preserve the A value and its active state. + /// args.setResult(args.a()); + /// args.setResultIsActive(args.aIsActive()); + /// } + /// } + /// }; + /// aTree.combineExtended(bTree, Local::max); + /// } + /// @endcode + template + void combineExtended(Tree& other, ExtendedCombineOp& op, bool prune = false); +#ifndef _MSC_VER + template + void combineExtended(Tree& other, const ExtendedCombineOp& op, bool prune = false); +#endif + + /// For a given function @c f, use sparse traversal to compute f(a, b) over all + /// corresponding pairs of values (tile or voxel) of trees A and B and store the result + /// in this tree. + /// @param a,b two trees with the same configuration (levels and node dimensions) + /// as this tree but with the B tree possibly having a different value type + /// @param op a functor of the form void op(const T1& a, const T2& b, T1& result), + /// where @c T1 is this tree's and the A tree's @c ValueType and @c T2 is the + /// B tree's @c ValueType, that computes result = f(a, b) + /// @param prune if true, prune the resulting tree one branch at a time (this is usually + /// more space-efficient than pruning the entire tree in one pass) + /// + /// @throw TypeError if the B tree's configuration doesn't match this tree's + /// or if this tree's ValueType is not constructible from the B tree's ValueType. + /// + /// @par Example: + /// Compute the per-voxel difference between two floating-point trees, + /// @c aTree and @c bTree, and store the result in a third tree. + /// @code + /// { + /// struct Local { + /// static inline void diff(const float& a, const float& b, float& result) { + /// result = a - b; + /// } + /// }; + /// FloatTree resultTree; + /// resultTree.combine2(aTree, bTree, Local::diff); + /// } + /// @endcode + template + void combine2(const Tree& a, const OtherTreeType& b, CombineOp& op, bool prune = false); +#ifndef _MSC_VER + template + void combine2(const Tree& a, const OtherTreeType& b, const CombineOp& op, bool prune = false); +#endif + + /// Like combine2(), but with + /// @param a,b two trees with the same configuration (levels and node dimensions) + /// as this tree but with the B tree possibly having a different value type + /// @param op a functor of the form void op(CombineArgs& args), where + /// @c T1 is this tree's and the A tree's @c ValueType and @c T2 is the B tree's + /// @c ValueType, that computes args.setResult(f(args.a(), args.b())) + /// and, optionally, + /// args.setResultIsActive(g(args.aIsActive(), args.bIsActive())) + /// for some functions @c f and @c g + /// @param prune if true, prune the resulting tree one branch at a time (this is usually + /// more space-efficient than pruning the entire tree in one pass) + /// This variant passes not only the @em a and @em b values but also the active states + /// of the @em a and @em b values to the functor, which may then return, by calling + /// args.setResultIsActive(), a computed active state for the result value. + /// By default, the result is active if either the @em a or the @em b value is active. + /// + /// @throw TypeError if the B tree's configuration doesn't match this tree's + /// or if this tree's ValueType is not constructible from the B tree's ValueType. + /// + /// @see openvdb/Types.h for the definition of the CombineArgs struct. + /// + /// @par Example: + /// Compute the per-voxel maximum values of two single-precision floating-point trees, + /// @c aTree and @c bTree, and store the result in a third tree. Set the active state + /// of each output value to that of the larger of the two input values. + /// @code + /// { + /// struct Local { + /// static inline void max(CombineArgs& args) { + /// if (args.b() > args.a()) { + /// // Transfer the B value and its active state. + /// args.setResult(args.b()); + /// args.setResultIsActive(args.bIsActive()); + /// } else { + /// // Preserve the A value and its active state. + /// args.setResult(args.a()); + /// args.setResultIsActive(args.aIsActive()); + /// } + /// } + /// }; + /// FloatTree aTree = ...; + /// FloatTree bTree = ...; + /// FloatTree resultTree; + /// resultTree.combine2Extended(aTree, bTree, Local::max); + /// } + /// @endcode + /// + /// @par Example: + /// Compute the per-voxel maximum values of a double-precision and a single-precision + /// floating-point tree, @c aTree and @c bTree, and store the result in a third, + /// double-precision tree. Set the active state of each output value to that of + /// the larger of the two input values. + /// @code + /// { + /// struct Local { + /// static inline void max(CombineArgs& args) { + /// if (args.b() > args.a()) { + /// // Transfer the B value and its active state. + /// args.setResult(args.b()); + /// args.setResultIsActive(args.bIsActive()); + /// } else { + /// // Preserve the A value and its active state. + /// args.setResult(args.a()); + /// args.setResultIsActive(args.aIsActive()); + /// } + /// } + /// }; + /// DoubleTree aTree = ...; + /// FloatTree bTree = ...; + /// DoubleTree resultTree; + /// resultTree.combine2Extended(aTree, bTree, Local::max); + /// } + /// @endcode + template + void combine2Extended(const Tree& a, const OtherTreeType& b, ExtendedCombineOp& op, + bool prune = false); +#ifndef _MSC_VER + template + void combine2Extended(const Tree& a, const OtherTreeType& b, const ExtendedCombineOp&, + bool prune = false); +#endif + + /// @brief Use sparse traversal to call the given functor with bounding box + /// information for all active tiles and leaf nodes or active voxels in the tree. + /// + /// @note The bounding boxes are guaranteed to be non-overlapping. + /// @param op a functor with a templated call operator of the form + /// template void operator()(const CoordBBox& bbox), + /// where bbox is the bounding box of either an active tile + /// (if @c LEVEL > 0), a leaf node or an active voxel. + /// The functor must also provide a templated method of the form + /// template bool descent() that returns @c false + /// if bounding boxes below the specified tree level are not to be visited. + /// In such cases of early tree termination, a bounding box is instead + /// derived from each terminating child node. + /// + /// @par Example: + /// Visit and process all active tiles and leaf nodes in a tree, but don't + /// descend to the active voxels. The smallest bounding boxes that will be + /// visited are those of leaf nodes or level-1 active tiles. + /// @code + /// { + /// struct ProcessTilesAndLeafNodes { + /// // Descend to leaf nodes, but no further. + /// template inline bool descent() { return LEVEL > 0; } + /// // Use this version to descend to voxels: + /// //template inline bool descent() { return true; } + /// + /// template + /// inline void operator()(const CoordBBox &bbox) { + /// if (LEVEL > 0) { + /// // code to process an active tile + /// } else { + /// // code to process a leaf node + /// } + /// } + /// }; + /// ProcessTilesAndLeafNodes op; + /// aTree.visitActiveBBox(op); + /// } + /// @endcode + /// @see openvdb/unittest/TestTree.cc for another example. + template void visitActiveBBox(BBoxOp& op) const { mRoot.visitActiveBBox(op); } + + /// Traverse this tree in depth-first order, and at each node call the given functor + /// with a @c DenseIterator (see Iterator.h) that points to either a child node or a + /// tile value. If the iterator points to a child node and the functor returns true, + /// do not descend to the child node; instead, continue the traversal at the next + /// iterator position. + /// @param op a functor of the form template bool op(IterT&), + /// where @c IterT is either a RootNode::ChildAllIter, + /// an InternalNode::ChildAllIter or a LeafNode::ChildAllIter + /// + /// @note There is no iterator that points to a RootNode, so to visit the root node, + /// retrieve the @c parent() of a RootNode::ChildAllIter. + /// + /// @par Example: + /// Print information about the nodes and tiles of a tree, but not individual voxels. + /// @code + /// namespace { + /// template + /// struct PrintTreeVisitor + /// { + /// using RootT = typename TreeT::RootNodeType; + /// bool visitedRoot; + /// + /// PrintTreeVisitor(): visitedRoot(false) {} + /// + /// template + /// inline bool operator()(IterT& iter) + /// { + /// if (!visitedRoot && iter.parent().getLevel() == RootT::LEVEL) { + /// visitedRoot = true; + /// std::cout << "Level-" << RootT::LEVEL << " node" << std::endl; + /// } + /// typename IterT::NonConstValueType value; + /// typename IterT::ChildNodeType* child = iter.probeChild(value); + /// if (child == nullptr) { + /// std::cout << "Tile with value " << value << std::endl; + /// return true; // no child to visit, so stop descending + /// } + /// std::cout << "Level-" << child->getLevel() << " node" << std::endl; + /// return (child->getLevel() == 0); // don't visit leaf nodes + /// } + /// + /// // The generic method, above, calls iter.probeChild(), which is not defined + /// // for LeafNode::ChildAllIter. These overloads ensure that the generic + /// // method template doesn't get instantiated for LeafNode iterators. + /// bool operator()(typename TreeT::LeafNodeType::ChildAllIter&) { return true; } + /// bool operator()(typename TreeT::LeafNodeType::ChildAllCIter&) { return true; } + /// }; + /// } + /// { + /// PrintTreeVisitor visitor; + /// tree.visit(visitor); + /// } + /// @endcode + template void visit(VisitorOp& op); + template void visit(const VisitorOp& op); + + /// Like visit(), but using @c const iterators, i.e., with + /// @param op a functor of the form template bool op(IterT&), + /// where @c IterT is either a RootNode::ChildAllCIter, + /// an InternalNode::ChildAllCIter or a LeafNode::ChildAllCIter + template void visit(VisitorOp& op) const; + template void visit(const VisitorOp& op) const; + + /// Traverse this tree and another tree in depth-first order, and for corresponding + /// subregions of index space call the given functor with two @c DenseIterators + /// (see Iterator.h), each of which points to either a child node or a tile value + /// of this tree and the other tree. If the A iterator points to a child node + /// and the functor returns a nonzero value with bit 0 set (e.g., 1), do not descend + /// to the child node; instead, continue the traversal at the next A iterator position. + /// Similarly, if the B iterator points to a child node and the functor returns a value + /// with bit 1 set (e.g., 2), continue the traversal at the next B iterator position. + /// @note The other tree must have the same index space and fan-out factors as + /// this tree, but it may have a different @c ValueType and a different topology. + /// @param other a tree of the same type as this tree + /// @param op a functor of the form + /// template int op(AIterT&, BIterT&), + /// where @c AIterT and @c BIterT are any combination of a + /// RootNode::ChildAllIter, an InternalNode::ChildAllIter or a + /// LeafNode::ChildAllIter with an @c OtherTreeType::RootNode::ChildAllIter, + /// an @c OtherTreeType::InternalNode::ChildAllIter + /// or an @c OtherTreeType::LeafNode::ChildAllIter + /// + /// @par Example: + /// Given two trees of the same type, @c aTree and @c bTree, replace leaf nodes of + /// @c aTree with corresponding leaf nodes of @c bTree, leaving @c bTree partially empty. + /// @code + /// namespace { + /// template + /// inline int stealLeafNodes(AIterT& aIter, BIterT& bIter) + /// { + /// typename AIterT::NonConstValueType aValue; + /// typename AIterT::ChildNodeType* aChild = aIter.probeChild(aValue); + /// typename BIterT::NonConstValueType bValue; + /// typename BIterT::ChildNodeType* bChild = bIter.probeChild(bValue); + /// + /// const Index aLevel = aChild->getLevel(), bLevel = bChild->getLevel(); + /// if (aChild && bChild && aLevel == 0 && bLevel == 0) { // both are leaf nodes + /// aIter.setChild(bChild); // give B's child to A + /// bIter.setValue(bValue); // replace B's child with a constant tile value + /// } + /// // Don't iterate over leaf node voxels of either A or B. + /// int skipBranch = (aLevel == 0) ? 1 : 0; + /// if (bLevel == 0) skipBranch = skipBranch | 2; + /// return skipBranch; + /// } + /// } + /// { + /// aTree.visit2(bTree, stealLeafNodes); + /// } + /// @endcode + template + void visit2(OtherTreeType& other, VisitorOp& op); + template + void visit2(OtherTreeType& other, const VisitorOp& op); + + /// Like visit2(), but using @c const iterators, i.e., with + /// @param other a tree of the same type as this tree + /// @param op a functor of the form + /// template int op(AIterT&, BIterT&), + /// where @c AIterT and @c BIterT are any combination of a + /// RootNode::ChildAllCIter, an InternalNode::ChildAllCIter + /// or a LeafNode::ChildAllCIter with an + /// @c OtherTreeType::RootNode::ChildAllCIter, + /// an @c OtherTreeType::InternalNode::ChildAllCIter + /// or an @c OtherTreeType::LeafNode::ChildAllCIter + template + void visit2(OtherTreeType& other, VisitorOp& op) const; + template + void visit2(OtherTreeType& other, const VisitorOp& op) const; + + + // + // Iteration + // + //@{ + /// Return an iterator over children of the root node. + typename RootNodeType::ChildOnCIter beginRootChildren() const { return mRoot.cbeginChildOn(); } + typename RootNodeType::ChildOnCIter cbeginRootChildren() const { return mRoot.cbeginChildOn(); } + typename RootNodeType::ChildOnIter beginRootChildren() { return mRoot.beginChildOn(); } + //@} + + //@{ + /// Return an iterator over non-child entries of the root node's table. + typename RootNodeType::ChildOffCIter beginRootTiles() const { return mRoot.cbeginChildOff(); } + typename RootNodeType::ChildOffCIter cbeginRootTiles() const { return mRoot.cbeginChildOff(); } + typename RootNodeType::ChildOffIter beginRootTiles() { return mRoot.beginChildOff(); } + //@} + + //@{ + /// Return an iterator over all entries of the root node's table. + typename RootNodeType::ChildAllCIter beginRootDense() const { return mRoot.cbeginChildAll(); } + typename RootNodeType::ChildAllCIter cbeginRootDense() const { return mRoot.cbeginChildAll(); } + typename RootNodeType::ChildAllIter beginRootDense() { return mRoot.beginChildAll(); } + //@} + + + //@{ + /// Iterator over all nodes in this tree + using NodeIter = NodeIteratorBase; + using NodeCIter = NodeIteratorBase; + //@} + + //@{ + /// Iterator over all leaf nodes in this tree + using LeafIter = LeafIteratorBase; + using LeafCIter = LeafIteratorBase; + //@} + + //@{ + /// Return an iterator over all nodes in this tree. + NodeIter beginNode() { return NodeIter(*this); } + NodeCIter beginNode() const { return NodeCIter(*this); } + NodeCIter cbeginNode() const { return NodeCIter(*this); } + //@} + + //@{ + /// Return an iterator over all leaf nodes in this tree. + LeafIter beginLeaf() { return LeafIter(*this); } + LeafCIter beginLeaf() const { return LeafCIter(*this); } + LeafCIter cbeginLeaf() const { return LeafCIter(*this); } + //@} + + using ValueAllIter = TreeValueIteratorBase; + using ValueAllCIter = TreeValueIteratorBase; + using ValueOnIter = TreeValueIteratorBase; + using ValueOnCIter = TreeValueIteratorBase; + using ValueOffIter = TreeValueIteratorBase; + using ValueOffCIter = TreeValueIteratorBase; + + //@{ + /// Return an iterator over all values (tile and voxel) across all nodes. + ValueAllIter beginValueAll() { return ValueAllIter(*this); } + ValueAllCIter beginValueAll() const { return ValueAllCIter(*this); } + ValueAllCIter cbeginValueAll() const { return ValueAllCIter(*this); } + //@} + //@{ + /// Return an iterator over active values (tile and voxel) across all nodes. + ValueOnIter beginValueOn() { return ValueOnIter(*this); } + ValueOnCIter beginValueOn() const { return ValueOnCIter(*this); } + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(*this); } + //@} + //@{ + /// Return an iterator over inactive values (tile and voxel) across all nodes. + ValueOffIter beginValueOff() { return ValueOffIter(*this); } + ValueOffCIter beginValueOff() const { return ValueOffCIter(*this); } + ValueOffCIter cbeginValueOff() const { return ValueOffCIter(*this); } + //@} + + /// @brief Return an iterator of type @c IterT (for example, begin() is + /// equivalent to beginValueOn()). + template IterT begin(); + /// @brief Return a const iterator of type CIterT (for example, cbegin() + /// is equivalent to cbeginValueOn()). + template CIterT cbegin() const; + + +protected: + using AccessorRegistry = tbb::concurrent_hash_map*, bool>; + using ConstAccessorRegistry = tbb::concurrent_hash_map*, bool>; + + /// @brief Notify all registered accessors, by calling ValueAccessor::release(), + /// that this tree is about to be deleted. + void releaseAllAccessors(); + + // TBB body object used to deallocates nodes in parallel. + template + struct DeallocateNodes { + DeallocateNodes(std::vector& nodes) + : mNodes(nodes.empty() ? nullptr : &nodes.front()) { } + void operator()(const tbb::blocked_range& range) const { + for (size_t n = range.begin(), N = range.end(); n < N; ++n) { + delete mNodes[n]; mNodes[n] = nullptr; + } + } + NodeType ** const mNodes; + }; + + // + // Data members + // + RootNodeType mRoot; // root node of the tree + mutable AccessorRegistry mAccessorRegistry; + mutable ConstAccessorRegistry mConstAccessorRegistry; + + static std::unique_ptr sTreeTypeName; +}; // end of Tree class + +template +std::unique_ptr Tree<_RootNodeType>::sTreeTypeName; + + +/// @brief Tree3::Type is the type of a three-level tree +/// (Root, Internal, Leaf) with value type T and +/// internal and leaf node log dimensions N1 and N2, respectively. +/// @note This is NOT the standard tree configuration (Tree4 is). +template +struct Tree3 { + using Type = Tree, N1>>>; +}; + + +/// @brief Tree4::Type is the type of a four-level tree +/// (Root, Internal, Internal, Leaf) with value type T and +/// internal and leaf node log dimensions N1, N2 and N3, respectively. +/// @note This is the standard tree configuration. +template +struct Tree4 { + using Type = Tree, N2>, N1>>>; +}; + +/// @brief Tree5::Type is the type of a five-level tree +/// (Root, Internal, Internal, Internal, Leaf) with value type T and +/// internal and leaf node log dimensions N1, N2, N3 and N4, respectively. +/// @note This is NOT the standard tree configuration (Tree4 is). +template +struct Tree5 { + using Type = + Tree, N3>, N2>, N1>>>; +}; + + +//////////////////////////////////////// + + +inline void +TreeBase::readTopology(std::istream& is, bool /*saveFloatAsHalf*/) +{ + int32_t bufferCount; + is.read(reinterpret_cast(&bufferCount), sizeof(int32_t)); + if (bufferCount != 1) OPENVDB_LOG_WARN("multi-buffer trees are no longer supported"); +} + + +inline void +TreeBase::writeTopology(std::ostream& os, bool /*saveFloatAsHalf*/) const +{ + int32_t bufferCount = 1; + os.write(reinterpret_cast(&bufferCount), sizeof(int32_t)); +} + + +inline void +TreeBase::print(std::ostream& os, int /*verboseLevel*/) const +{ + os << " Tree Type: " << type() + << " Active Voxel Count: " << activeVoxelCount() << std::endl + << " Active tile Count: " << activeTileCount() << std::endl + << " Inactive Voxel Count: " << inactiveVoxelCount() << std::endl + << " Leaf Node Count: " << leafCount() << std::endl + << " Non-leaf Node Count: " << nonLeafCount() << std::endl; +} + + +//////////////////////////////////////// + + +// +// Type traits for tree iterators +// + +/// @brief TreeIterTraits provides, for all tree iterators, a begin(tree) function +/// that returns an iterator over a tree of arbitrary type. +template struct TreeIterTraits; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildOnIter begin(TreeT& tree) { + return tree.beginRootChildren(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildOnCIter begin(const TreeT& tree) { + return tree.cbeginRootChildren(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildOffIter begin(TreeT& tree) { + return tree.beginRootTiles(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildOffCIter begin(const TreeT& tree) { + return tree.cbeginRootTiles(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildAllIter begin(TreeT& tree) { + return tree.beginRootDense(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::RootNodeType::ChildAllCIter begin(const TreeT& tree) { + return tree.cbeginRootDense(); + } +}; + +template struct TreeIterTraits { + static typename TreeT::NodeIter begin(TreeT& tree) { return tree.beginNode(); } +}; + +template struct TreeIterTraits { + static typename TreeT::NodeCIter begin(const TreeT& tree) { return tree.cbeginNode(); } +}; + +template struct TreeIterTraits { + static typename TreeT::LeafIter begin(TreeT& tree) { return tree.beginLeaf(); } +}; + +template struct TreeIterTraits { + static typename TreeT::LeafCIter begin(const TreeT& tree) { return tree.cbeginLeaf(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueOnIter begin(TreeT& tree) { return tree.beginValueOn(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueOnCIter begin(const TreeT& tree) { return tree.cbeginValueOn(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueOffIter begin(TreeT& tree) { return tree.beginValueOff(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueOffCIter begin(const TreeT& tree) { return tree.cbeginValueOff(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueAllIter begin(TreeT& tree) { return tree.beginValueAll(); } +}; + +template struct TreeIterTraits { + static typename TreeT::ValueAllCIter begin(const TreeT& tree) { return tree.cbeginValueAll(); } +}; + + +template +template +inline IterT +Tree::begin() +{ + return TreeIterTraits::begin(*this); +} + + +template +template +inline IterT +Tree::cbegin() const +{ + return TreeIterTraits::begin(*this); +} + + +//////////////////////////////////////// + + +template +void +Tree::readTopology(std::istream& is, bool saveFloatAsHalf) +{ + this->clearAllAccessors(); + TreeBase::readTopology(is, saveFloatAsHalf); + mRoot.readTopology(is, saveFloatAsHalf); +} + + +template +void +Tree::writeTopology(std::ostream& os, bool saveFloatAsHalf) const +{ + TreeBase::writeTopology(os, saveFloatAsHalf); + mRoot.writeTopology(os, saveFloatAsHalf); +} + + +template +inline void +Tree::readBuffers(std::istream &is, bool saveFloatAsHalf) +{ + this->clearAllAccessors(); + mRoot.readBuffers(is, saveFloatAsHalf); +} + + +template +inline void +Tree::readBuffers(std::istream &is, const CoordBBox& bbox, bool saveFloatAsHalf) +{ + this->clearAllAccessors(); + mRoot.readBuffers(is, bbox, saveFloatAsHalf); +} + + +template +inline void +Tree::readNonresidentBuffers() const +{ + for (LeafCIter it = this->cbeginLeaf(); it; ++it) { + // Retrieving the value of a leaf voxel forces loading of the leaf node's voxel buffer. + it->getValue(Index(0)); + } +} + + +template +inline void +Tree::writeBuffers(std::ostream &os, bool saveFloatAsHalf) const +{ + mRoot.writeBuffers(os, saveFloatAsHalf); +} + + +template +inline void +Tree::clear() +{ + std::vector leafnodes; + this->stealNodes(leafnodes); + + tbb::parallel_for(tbb::blocked_range(0, leafnodes.size()), + DeallocateNodes(leafnodes)); + + std::vector internalNodes; + this->stealNodes(internalNodes); + + tbb::parallel_for(tbb::blocked_range(0, internalNodes.size()), + DeallocateNodes(internalNodes)); + + mRoot.clear(); + + this->clearAllAccessors(); +} + + +//////////////////////////////////////// + + +template +inline void +Tree::attachAccessor(ValueAccessorBase& accessor) const +{ + typename AccessorRegistry::accessor a; + mAccessorRegistry.insert(a, &accessor); +} + + +template +inline void +Tree::attachAccessor(ValueAccessorBase& accessor) const +{ + typename ConstAccessorRegistry::accessor a; + mConstAccessorRegistry.insert(a, &accessor); +} + + +template +inline void +Tree::releaseAccessor(ValueAccessorBase& accessor) const +{ + mAccessorRegistry.erase(&accessor); +} + + +template +inline void +Tree::releaseAccessor(ValueAccessorBase& accessor) const +{ + mConstAccessorRegistry.erase(&accessor); +} + + +template +inline void +Tree::clearAllAccessors() +{ + for (typename AccessorRegistry::iterator it = mAccessorRegistry.begin(); + it != mAccessorRegistry.end(); ++it) + { + if (it->first) it->first->clear(); + } + + for (typename ConstAccessorRegistry::iterator it = mConstAccessorRegistry.begin(); + it != mConstAccessorRegistry.end(); ++it) + { + if (it->first) it->first->clear(); + } +} + + +template +inline void +Tree::releaseAllAccessors() +{ + mAccessorRegistry.erase(nullptr); + for (typename AccessorRegistry::iterator it = mAccessorRegistry.begin(); + it != mAccessorRegistry.end(); ++it) + { + it->first->release(); + } + mAccessorRegistry.clear(); + + mAccessorRegistry.erase(nullptr); + for (typename ConstAccessorRegistry::iterator it = mConstAccessorRegistry.begin(); + it != mConstAccessorRegistry.end(); ++it) + { + it->first->release(); + } + mConstAccessorRegistry.clear(); +} + + +//////////////////////////////////////// + + +template +inline const typename RootNodeType::ValueType& +Tree::getValue(const Coord& xyz) const +{ + return mRoot.getValue(xyz); +} + + +template +template +inline const typename RootNodeType::ValueType& +Tree::getValue(const Coord& xyz, AccessT& accessor) const +{ + return accessor.getValue(xyz); +} + + +template +inline int +Tree::getValueDepth(const Coord& xyz) const +{ + return mRoot.getValueDepth(xyz); +} + + +template +inline void +Tree::setValueOff(const Coord& xyz) +{ + mRoot.setValueOff(xyz); +} + + +template +inline void +Tree::setValueOff(const Coord& xyz, const ValueType& value) +{ + mRoot.setValueOff(xyz, value); +} + + +template +inline void +Tree::setActiveState(const Coord& xyz, bool on) +{ + mRoot.setActiveState(xyz, on); +} + + +template +inline void +Tree::setValue(const Coord& xyz, const ValueType& value) +{ + mRoot.setValueOn(xyz, value); +} + +template +inline void +Tree::setValueOnly(const Coord& xyz, const ValueType& value) +{ + mRoot.setValueOnly(xyz, value); +} + +template +template +inline void +Tree::setValue(const Coord& xyz, const ValueType& value, AccessT& accessor) +{ + accessor.setValue(xyz, value); +} + + +template +inline void +Tree::setValueOn(const Coord& xyz) +{ + mRoot.setActiveState(xyz, true); +} + + +template +inline void +Tree::setValueOn(const Coord& xyz, const ValueType& value) +{ + mRoot.setValueOn(xyz, value); +} + + +template +template +inline void +Tree::modifyValue(const Coord& xyz, const ModifyOp& op) +{ + mRoot.modifyValue(xyz, op); +} + + +template +template +inline void +Tree::modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) +{ + mRoot.modifyValueAndActiveState(xyz, op); +} + + +template +inline bool +Tree::probeValue(const Coord& xyz, ValueType& value) const +{ + return mRoot.probeValue(xyz, value); +} + + +//////////////////////////////////////// + + +template +inline void +Tree::addTile(Index level, const Coord& xyz, + const ValueType& value, bool active) +{ + mRoot.addTile(level, xyz, value, active); +} + + +template +template +inline NodeT* +Tree::stealNode(const Coord& xyz, const ValueType& value, bool active) +{ + this->clearAllAccessors(); + return mRoot.template stealNode(xyz, value, active); +} + + +template +inline typename RootNodeType::LeafNodeType* +Tree::touchLeaf(const Coord& xyz) +{ + return mRoot.touchLeaf(xyz); +} + + +template +inline typename RootNodeType::LeafNodeType* +Tree::probeLeaf(const Coord& xyz) +{ + return mRoot.probeLeaf(xyz); +} + + +template +inline const typename RootNodeType::LeafNodeType* +Tree::probeConstLeaf(const Coord& xyz) const +{ + return mRoot.probeConstLeaf(xyz); +} + + +template +template +inline NodeType* +Tree::probeNode(const Coord& xyz) +{ + return mRoot.template probeNode(xyz); +} + + +template +template +inline const NodeType* +Tree::probeNode(const Coord& xyz) const +{ + return this->template probeConstNode(xyz); +} + + +template +template +inline const NodeType* +Tree::probeConstNode(const Coord& xyz) const +{ + return mRoot.template probeConstNode(xyz); +} + + +//////////////////////////////////////// + + +template +inline void +Tree::clip(const CoordBBox& bbox) +{ + this->clearAllAccessors(); + return mRoot.clip(bbox); +} + + +template +inline void +Tree::clipUnallocatedNodes() +{ + this->clearAllAccessors(); + for (LeafIter it = this->beginLeaf(); it; ) { + const LeafNodeType* leaf = it.getLeaf(); + ++it; // advance the iterator before deleting the leaf node + if (!leaf->isAllocated()) { + this->addTile(/*level=*/0, leaf->origin(), this->background(), /*active=*/false); + } + } +} + +#if OPENVDB_ABI_VERSION_NUMBER >= 4 +template +inline Index32 +Tree::unallocatedLeafCount() const +{ + Index32 sum = 0; + for (auto it = this->cbeginLeaf(); it; ++it) if (!it->isAllocated()) ++sum; + return sum; +} +#endif + + +template +inline void +Tree::sparseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + this->clearAllAccessors(); + return mRoot.sparseFill(bbox, value, active); +} + + +template +inline void +Tree::denseFill(const CoordBBox& bbox, const ValueType& value, bool active) +{ + this->clearAllAccessors(); + return mRoot.denseFill(bbox, value, active); +} + + +template +inline void +Tree::voxelizeActiveTiles(bool threaded) +{ + this->clearAllAccessors(); + mRoot.voxelizeActiveTiles(threaded); +} + + +template +Metadata::Ptr +Tree::getBackgroundValue() const +{ + Metadata::Ptr result; + if (Metadata::isRegisteredType(valueType())) { + using MetadataT = TypedMetadata; + result = Metadata::createMetadata(valueType()); + if (result->typeName() == MetadataT::staticTypeName()) { + MetadataT* m = static_cast(result.get()); + m->value() = mRoot.background(); + } + } + return result; +} + + +//////////////////////////////////////// + + +template +inline void +Tree::merge(Tree& other, MergePolicy policy) +{ + this->clearAllAccessors(); + other.clearAllAccessors(); + switch (policy) { + case MERGE_ACTIVE_STATES: + mRoot.template merge(other.mRoot); break; + case MERGE_NODES: + mRoot.template merge(other.mRoot); break; + case MERGE_ACTIVE_STATES_AND_NODES: + mRoot.template merge(other.mRoot); break; + } +} + + +template +template +inline void +Tree::topologyUnion(const Tree& other) +{ + this->clearAllAccessors(); + mRoot.topologyUnion(other.root()); +} + +template +template +inline void +Tree::topologyIntersection(const Tree& other) +{ + this->clearAllAccessors(); + mRoot.topologyIntersection(other.root()); +} + +template +template +inline void +Tree::topologyDifference(const Tree& other) +{ + this->clearAllAccessors(); + mRoot.topologyDifference(other.root()); +} + +//////////////////////////////////////// + + +/// @brief Helper class to adapt a three-argument (a, b, result) CombineOp functor +/// into a single-argument functor that accepts a CombineArgs struct +template +struct CombineOpAdapter +{ + CombineOpAdapter(CombineOp& _op): op(_op) {} + + void operator()(CombineArgs& args) const { + op(args.a(), args.b(), args.result()); + } + + CombineOp& op; +}; + + +template +template +inline void +Tree::combine(Tree& other, CombineOp& op, bool prune) +{ + CombineOpAdapter extendedOp(op); + this->combineExtended(other, extendedOp, prune); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: aTree.combine(bTree, MyCombineOp(...)). +#ifndef _MSC_VER +template +template +inline void +Tree::combine(Tree& other, const CombineOp& op, bool prune) +{ + CombineOpAdapter extendedOp(op); + this->combineExtended(other, extendedOp, prune); +} +#endif + + +template +template +inline void +Tree::combineExtended(Tree& other, ExtendedCombineOp& op, bool prune) +{ + this->clearAllAccessors(); + mRoot.combine(other.root(), op, prune); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: aTree.combineExtended(bTree, MyCombineOp(...)). +#ifndef _MSC_VER +template +template +inline void +Tree::combineExtended(Tree& other, const ExtendedCombineOp& op, bool prune) +{ + this->clearAllAccessors(); + mRoot.template combine(other.mRoot, op, prune); +} +#endif + + +template +template +inline void +Tree::combine2(const Tree& a, const OtherTreeType& b, CombineOp& op, bool prune) +{ + CombineOpAdapter extendedOp(op); + this->combine2Extended(a, b, extendedOp, prune); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: tree.combine2(aTree, bTree, MyCombineOp(...)). +#ifndef _MSC_VER +template +template +inline void +Tree::combine2(const Tree& a, const OtherTreeType& b, const CombineOp& op, bool prune) +{ + CombineOpAdapter extendedOp(op); + this->combine2Extended(a, b, extendedOp, prune); +} +#endif + + +template +template +inline void +Tree::combine2Extended(const Tree& a, const OtherTreeType& b, + ExtendedCombineOp& op, bool prune) +{ + this->clearAllAccessors(); + mRoot.combine2(a.root(), b.root(), op, prune); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like the following, where the functor argument is a temporary: +/// tree.combine2Extended(aTree, bTree, MyCombineOp(...)). +#ifndef _MSC_VER +template +template +inline void +Tree::combine2Extended(const Tree& a, const OtherTreeType& b, + const ExtendedCombineOp& op, bool prune) +{ + this->clearAllAccessors(); + mRoot.template combine2(a.root(), b.root(), op, prune); +} +#endif + + +//////////////////////////////////////// + + +template +template +inline void +Tree::visit(VisitorOp& op) +{ + this->clearAllAccessors(); + mRoot.template visit(op); +} + + +template +template +inline void +Tree::visit(VisitorOp& op) const +{ + mRoot.template visit(op); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: tree.visit(MyVisitorOp(...)). +template +template +inline void +Tree::visit(const VisitorOp& op) +{ + this->clearAllAccessors(); + mRoot.template visit(op); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: tree.visit(MyVisitorOp(...)). +template +template +inline void +Tree::visit(const VisitorOp& op) const +{ + mRoot.template visit(op); +} + + +//////////////////////////////////////// + + +template +template +inline void +Tree::visit2(OtherTreeType& other, VisitorOp& op) +{ + this->clearAllAccessors(); + using OtherRootNodeType = typename OtherTreeType::RootNodeType; + mRoot.template visit2(other.root(), op); +} + + +template +template +inline void +Tree::visit2(OtherTreeType& other, VisitorOp& op) const +{ + using OtherRootNodeType = typename OtherTreeType::RootNodeType; + mRoot.template visit2(other.root(), op); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: aTree.visit2(bTree, MyVisitorOp(...)). +template +template +inline void +Tree::visit2(OtherTreeType& other, const VisitorOp& op) +{ + this->clearAllAccessors(); + using OtherRootNodeType = typename OtherTreeType::RootNodeType; + mRoot.template visit2(other.root(), op); +} + + +/// @internal This overload is needed (for ICC and GCC, but not for VC) to disambiguate +/// code like this: aTree.visit2(bTree, MyVisitorOp(...)). +template +template +inline void +Tree::visit2(OtherTreeType& other, const VisitorOp& op) const +{ + using OtherRootNodeType = typename OtherTreeType::RootNodeType; + mRoot.template visit2(other.root(), op); +} + + +//////////////////////////////////////// + + +template +inline const Name& +Tree::treeType() +{ + static std::once_flag once; + std::call_once(once, []() + { + std::vector dims; + Tree::getNodeLog2Dims(dims); + std::ostringstream ostr; + ostr << "Tree_" << typeNameAsString(); + for (size_t i = 1, N = dims.size(); i < N; ++i) { // start from 1 to skip the RootNode + ostr << "_" << dims[i]; + } + sTreeTypeName.reset(new Name(ostr.str())); + }); + return *sTreeTypeName; +} + + +template +template +inline bool +Tree::hasSameTopology(const Tree& other) const +{ + return mRoot.hasSameTopology(other.root()); +} + + +template +Index64 +Tree::inactiveVoxelCount() const +{ + Coord dim(0, 0, 0); + this->evalActiveVoxelDim(dim); + const Index64 + totalVoxels = dim.x() * dim.y() * dim.z(), + activeVoxels = this->activeVoxelCount(); + assert(totalVoxels >= activeVoxels); + return totalVoxels - activeVoxels; +} + + +template +inline bool +Tree::evalLeafBoundingBox(CoordBBox& bbox) const +{ + bbox.reset(); // default invalid bbox + + if (this->empty()) return false; // empty + + mRoot.evalActiveBoundingBox(bbox, false); + + return true;// not empty +} + +template +inline bool +Tree::evalActiveVoxelBoundingBox(CoordBBox& bbox) const +{ + bbox.reset(); // default invalid bbox + + if (this->empty()) return false; // empty + + mRoot.evalActiveBoundingBox(bbox, true); + + return true;// not empty +} + + +template +inline bool +Tree::evalActiveVoxelDim(Coord& dim) const +{ + CoordBBox bbox; + bool notEmpty = this->evalActiveVoxelBoundingBox(bbox); + dim = bbox.extents(); + return notEmpty; +} + + +template +inline bool +Tree::evalLeafDim(Coord& dim) const +{ + CoordBBox bbox; + bool notEmpty = this->evalLeafBoundingBox(bbox); + dim = bbox.extents(); + return notEmpty; +} + + +template +inline void +Tree::evalMinMax(ValueType& minVal, ValueType& maxVal) const +{ + /// @todo optimize + minVal = maxVal = zeroVal(); + if (ValueOnCIter iter = this->cbeginValueOn()) { + minVal = maxVal = *iter; + for (++iter; iter; ++iter) { + const ValueType& val = *iter; + if (val < minVal) minVal = val; + if (val > maxVal) maxVal = val; + } + } +} + + +template +inline void +Tree::getNodeLog2Dims(std::vector& dims) +{ + dims.clear(); + RootNodeType::getNodeLog2Dims(dims); +} + + +template +inline void +Tree::print(std::ostream& os, int verboseLevel) const +{ + if (verboseLevel <= 0) return; + + /// @todo Consider using boost::io::ios_precision_saver instead. + struct OnExit { + std::ostream& os; + std::streamsize savedPrecision; + OnExit(std::ostream& _os): os(_os), savedPrecision(os.precision()) {} + ~OnExit() { os.precision(savedPrecision); } + }; + OnExit restorePrecision(os); + + std::vector dims; + Tree::getNodeLog2Dims(dims);// leaf is the last element + + os << "Information about Tree:\n" + << " Type: " << this->type() << "\n"; + + os << " Configuration:\n"; + + if (verboseLevel <= 1) { + // Print node types and sizes. + os << " Root(" << mRoot.getTableSize() << ")"; + if (dims.size() > 1) { + for (size_t i = 1, N = dims.size() - 1; i < N; ++i) { + os << ", Internal(" << (1 << dims[i]) << "^3)"; + } + os << ", Leaf(" << (1 << dims.back()) << "^3)\n"; + } + os << " Background value: " << mRoot.background() << "\n"; + return; + } + + // The following is tree information that is expensive to extract. + + ValueType minVal = zeroVal(), maxVal = zeroVal(); + if (verboseLevel > 3) { + // This forces loading of all non-resident nodes. + this->evalMinMax(minVal, maxVal); + } + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + const auto nodeCount = this->nodeCount();//fast + const Index32 leafCount = nodeCount.front();// leaf is the first element +#else + std::vector nodeCount(dims.size()); + for (NodeCIter it = cbeginNode(); it; ++it) ++(nodeCount[it.getDepth()]);//slow + const Index64 leafCount = *nodeCount.rbegin();// leaf is the last element +#endif + assert(dims.size() == nodeCount.size()); + + Index64 totalNodeCount = 0; + for (size_t i = 0; i < nodeCount.size(); ++i) totalNodeCount += nodeCount[i]; + + // Print node types, counts and sizes. + os << " Root(1 x " << mRoot.getTableSize() << ")"; + if (dims.size() >= 2) { + for (size_t i = 1, N = dims.size() - 1; i < N; ++i) { +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + os << ", Internal(" << util::formattedInt(nodeCount[N - i]); +#else + os << ", Internal(" << util::formattedInt(nodeCount[i]); +#endif + os << " x " << (1 << dims[i]) << "^3)"; + } + os << ", Leaf(" << util::formattedInt(leafCount); + os << " x " << (1 << dims.back()) << "^3)\n"; + } + os << " Background value: " << mRoot.background() << "\n"; + + // Statistics of topology and values + + if (verboseLevel > 3) { + os << " Min value: " << minVal << "\n"; + os << " Max value: " << maxVal << "\n"; + } + + const Index64 + numActiveVoxels = this->activeVoxelCount(), + numActiveLeafVoxels = this->activeLeafVoxelCount(), + numActiveTiles = this->activeTileCount(); + + os << " Number of active voxels: " << util::formattedInt(numActiveVoxels) << "\n"; + os << " Number of active tiles: " << util::formattedInt(numActiveTiles) << "\n"; + + Coord dim(0, 0, 0); + Index64 totalVoxels = 0; + if (numActiveVoxels) { // nonempty + CoordBBox bbox; + this->evalActiveVoxelBoundingBox(bbox); + dim = bbox.extents(); + totalVoxels = dim.x() * uint64_t(dim.y()) * dim.z(); + + os << " Bounding box of active voxels: " << bbox << "\n"; + os << " Dimensions of active voxels: " + << dim[0] << " x " << dim[1] << " x " << dim[2] << "\n"; + + const double activeRatio = (100.0 * double(numActiveVoxels)) / double(totalVoxels); + os << " Percentage of active voxels: " << std::setprecision(3) << activeRatio << "%\n"; + + if (leafCount > 0) { + const double fillRatio = (100.0 * double(numActiveLeafVoxels)) + / (double(leafCount) * double(LeafNodeType::NUM_VOXELS)); + os << " Average leaf node fill ratio: " << fillRatio << "%\n"; + } + + if (verboseLevel > 2) { + Index64 sum = 0;// count the number of unallocated leaf nodes + for (auto it = this->cbeginLeaf(); it; ++it) if (!it->isAllocated()) ++sum; + os << " Number of unallocated nodes: " + << util::formattedInt(sum) << " (" + << (100.0 * double(sum) / double(totalNodeCount)) << "%)\n"; + } + } else { + os << " Tree is empty!\n"; + } + os << std::flush; + + if (verboseLevel == 2) return; + + // Memory footprint in bytes + const Index64 + actualMem = this->memUsage(), + denseMem = sizeof(ValueType) * totalVoxels, + voxelsMem = sizeof(ValueType) * numActiveLeafVoxels; + ///< @todo not accurate for BoolTree (and probably should count tile values) + + os << "Memory footprint:\n"; + util::printBytes(os, actualMem, " Actual: "); + util::printBytes(os, voxelsMem, " Active leaf voxels: "); + + if (numActiveVoxels) { + util::printBytes(os, denseMem, " Dense equivalent: "); + os << " Actual footprint is " << (100.0 * double(actualMem) / double(denseMem)) + << "% of an equivalent dense volume\n"; + os << " Leaf voxel footprint is " << (100.0 * double(voxelsMem) / double(actualMem)) + << "% of actual footprint\n"; + } +} + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_TREE_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/TreeIterator.h b/openvdb/tree/TreeIterator.h new file mode 100644 index 00000000..cabb842c --- /dev/null +++ b/openvdb/tree/TreeIterator.h @@ -0,0 +1,1369 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file tree/TreeIterator.h + +#ifndef OPENVDB_TREE_TREEITERATOR_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_TREEITERATOR_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +// Prior to 0.96.1, depth-bounded value iterators always descended to the leaf level +// and iterated past leaf nodes. Now, they never descend past the maximum depth. +// Comment out the following line to restore the older, less-efficient behavior: +#define ENABLE_TREE_VALUE_DEPTH_BOUND_OPTIMIZATION + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +namespace iter { + +template +struct InvertedTree { + using SubtreeT = typename InvertedTree::Type; + using Type = typename boost::mpl::push_back::type; +}; +template +struct InvertedTree { + using Type = typename boost::mpl::vector::type; +}; + +} // namespace iter + + +//////////////////////////////////////// + + +/// IterTraits provides the following for iterators of the standard types, +/// i.e., for {Child,Value}{On,Off,All}{Iter,CIter}: +/// - a NodeConverter template to convert an iterator for one type of node +/// to an iterator of the same type for another type of node; for example, +/// IterTraits::NodeConverter::Type +/// is synonymous with LeafNode::ValueOnIter. +/// - a begin(node) function that returns a begin iterator for a node of arbitrary type; +/// for example, IterTraits::begin(leaf) returns +/// leaf.beginValueOn() +/// - a getChild() function that returns a pointer to the child node to which the iterator +/// is currently pointing (always null if the iterator is a Value iterator) +template +struct IterTraits +{ + template static ChildT* getChild(const IterT&) { return nullptr; } +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildOnIter; + static IterT begin(NodeT& node) { return node.beginChildOn(); } + template static ChildT* getChild(const IterT& iter) { + return &iter.getValue(); + } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildOnIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildOnCIter; + static IterT begin(const NodeT& node) { return node.cbeginChildOn(); } + template static const ChildT* getChild(const IterT& iter) { + return &iter.getValue(); + } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildOnCIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildOffIter; + static IterT begin(NodeT& node) { return node.beginChildOff(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildOffIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildOffCIter; + static IterT begin(const NodeT& node) { return node.cbeginChildOff(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildOffCIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildAllIter; + static IterT begin(NodeT& node) { return node.beginChildAll(); } + template static ChildT* getChild(const IterT& iter) { + typename IterT::NonConstValueType val; + return iter.probeChild(val); + } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildAllIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ChildAllCIter; + static IterT begin(const NodeT& node) { return node.cbeginChildAll(); } + template static ChildT* getChild(const IterT& iter) { + typename IterT::NonConstValueType val; + return iter.probeChild(val); + } + template struct NodeConverter { + using Type = typename OtherNodeT::ChildAllCIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueOnIter; + static IterT begin(NodeT& node) { return node.beginValueOn(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueOnIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueOnCIter; + static IterT begin(const NodeT& node) { return node.cbeginValueOn(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueOnCIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueOffIter; + static IterT begin(NodeT& node) { return node.beginValueOff(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueOffIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueOffCIter; + static IterT begin(const NodeT& node) { return node.cbeginValueOff(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueOffCIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueAllIter; + static IterT begin(NodeT& node) { return node.beginValueAll(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueAllIter; + }; +}; + +template +struct IterTraits +{ + using IterT = typename NodeT::ValueAllCIter; + static IterT begin(const NodeT& node) { return node.cbeginValueAll(); } + template struct NodeConverter { + using Type = typename OtherNodeT::ValueAllCIter; + }; +}; + + +//////////////////////////////////////// + + +/// @brief An IterListItem is an element of a compile-time linked list of iterators +/// to nodes of different types. +/// +/// The list is constructed by traversing the template hierarchy of a Tree in reverse order, +/// so typically the elements will be a LeafNode iterator of some type (e.g., ValueOnCIter), +/// followed by one or more InternalNode iterators of the same type, followed by a RootNode +/// iterator of the same type. +/// +/// The length of the list is fixed at compile time, and because it is implemented using +/// nested, templated classes, much of the list traversal logic can be optimized away. +template +class IterListItem +{ +public: + /// The type of iterator stored in the previous list item + using PrevIterT = typename PrevItemT::IterT; + /// The type of node (non-const) whose iterator is stored in this list item + using _NodeT = typename boost::mpl::front::type; + /// The type of iterator stored in this list item (e.g., InternalNode::ValueOnCIter) + using IterT = typename IterTraits::template + NodeConverter<_NodeT>::Type; + + /// The type of node (const or non-const) over which IterT iterates (e.g., const RootNode<...>) + using NodeT = typename IterT::NodeType; + /// The type of the node with const qualifiers removed ("Non-Const") + using NCNodeT = typename IterT::NonConstNodeType; + /// The type of value (with const qualifiers removed) to which the iterator points + using NCValueT = typename IterT::NonConstValueType; + /// NodeT's child node type, with the same constness (e.g., const InternalNode<...>) + using ChildT = typename CopyConstness::Type; + /// NodeT's child node type with const qualifiers removed + using NCChildT = typename CopyConstness::Type; + using ITraits = IterTraits; + /// NodeT's level in its tree (0 = LeafNode) + static const Index Level = _Level; + + IterListItem(PrevItemT* prev): mNext(this), mPrev(prev) {} + + IterListItem(const IterListItem& other): + mIter(other.mIter), mNext(other.mNext), mPrev(nullptr) {} + IterListItem& operator=(const IterListItem& other) + { + if (&other != this) { + mIter = other.mIter; + mNext = other.mNext; + mPrev = nullptr; ///< @note external call to updateBackPointers() required + } + return *this; + } + + void updateBackPointers(PrevItemT* prev) { mPrev = prev; mNext.updateBackPointers(this); } + + void setIter(const IterT& iter) { mIter = iter; } + template + void setIter(const OtherIterT& iter) { mNext.setIter(iter); } + + /// Return the node over which this list element's iterator iterates. + void getNode(Index lvl, NodeT*& node) const + { + node = (lvl <= Level) ? mIter.getParentNode() : nullptr; + } + /// Return the node over which one of the following list elements' iterator iterates. + template + void getNode(Index lvl, OtherNodeT*& node) const { mNext.getNode(lvl, node); } + + /// @brief Initialize the iterator for level @a lvl of the tree with the node + /// over which the corresponding iterator of @a otherListItem is iterating. + /// + /// For example, if @a otherListItem contains a LeafNode::ValueOnIter, + /// initialize this list's leaf iterator with the same LeafNode. + template + void initLevel(Index lvl, OtherIterListItemT& otherListItem) + { + if (lvl == Level) { + const NodeT* node = nullptr; + otherListItem.getNode(lvl, node); + mIter = (node == nullptr) ? IterT() : ITraits::begin(*const_cast(node)); + } else { + // Forward to one of the following list elements. + mNext.initLevel(lvl, otherListItem); + } + } + + /// Return The table offset of the iterator at level @a lvl of the tree. + Index pos(Index lvl) const { return (lvl == Level) ? mIter.pos() : mNext.pos(lvl); } + + /// Return @c true if the iterator at level @a lvl of the tree has not yet reached its end. + bool test(Index lvl) const { return (lvl == Level) ? mIter.test() : mNext.test(lvl); } + + /// Increment the iterator at level @a lvl of the tree. + bool next(Index lvl) { return (lvl == Level) ? mIter.next() : mNext.next(lvl); } + + /// @brief If the iterator at level @a lvl of the tree points to a child node, + /// initialize the next iterator in this list with that child node. + bool down(Index lvl) + { + if (lvl == Level && mPrev != nullptr && mIter) { + if (ChildT* child = ITraits::template getChild(mIter)) { + mPrev->setIter(PrevItemT::ITraits::begin(*child)); + return true; + } + } + return (lvl > Level) ? mNext.down(lvl) : false; + } + + /// @brief Return the global coordinates of the voxel or tile to which the iterator + /// at level @a lvl of the tree is currently pointing. + Coord getCoord(Index lvl) const + { + return (lvl == Level) ? mIter.getCoord() : mNext.getCoord(lvl); + } + Index getChildDim(Index lvl) const + { + return (lvl == Level) ? NodeT::getChildDim() : mNext.getChildDim(lvl); + } + /// Return the number of (virtual) voxels spanned by a tile value or child node + Index64 getVoxelCount(Index lvl) const + { + return (lvl == Level) ? ChildT::NUM_VOXELS : mNext.getVoxelCount(lvl); + } + + /// Return @c true if the iterator at level @a lvl of the tree points to an active value. + bool isValueOn(Index lvl) const + { + return (lvl == Level) ? mIter.isValueOn() : mNext.isValueOn(lvl); + } + + /// Return the value to which the iterator at level @a lvl of the tree points. + const NCValueT& getValue(Index lvl) const + { + if (lvl == Level) return mIter.getValue(); + return mNext.getValue(lvl); + } + + /// @brief Set the value (to @a val) to which the iterator at level @a lvl + /// of the tree points and mark the value as active. + /// @note Not valid when @c IterT is a const iterator type + void setValue(Index lvl, const NCValueT& val) const + { + if (lvl == Level) mIter.setValue(val); else mNext.setValue(lvl, val); + } + /// @brief Set the value (to @a val) to which the iterator at level @a lvl of the tree + /// points and mark the value as active if @a on is @c true, or inactive otherwise. + /// @note Not valid when @c IterT is a const iterator type + void setValueOn(Index lvl, bool on = true) const + { + if (lvl == Level) mIter.setValueOn(on); else mNext.setValueOn(lvl, on); + } + /// @brief Mark the value to which the iterator at level @a lvl of the tree points + /// as inactive. + /// @note Not valid when @c IterT is a const iterator type + void setValueOff(Index lvl) const + { + if (lvl == Level) mIter.setValueOff(); else mNext.setValueOff(lvl); + } + + /// @brief Apply a functor to the item to which this iterator is pointing. + /// @note Not valid when @c IterT is a const iterator type + template + void modifyValue(Index lvl, const ModifyOp& op) const + { + if (lvl == Level) mIter.modifyValue(op); else mNext.modifyValue(lvl, op); + } + +private: + using RestT = typename boost::mpl::pop_front::type; // NodeVecT minus its first item + using NextItem = IterListItem; + + IterT mIter; + NextItem mNext; + PrevItemT* mPrev; +}; + + +/// The initial element of a compile-time linked list of iterators to nodes of different types +template +class IterListItem +{ +public: + /// The type of iterator stored in the previous list item + using PrevIterT = typename PrevItemT::IterT; + /// The type of node (non-const) whose iterator is stored in this list item + using _NodeT = typename boost::mpl::front::type; + /// The type of iterator stored in this list item (e.g., InternalNode::ValueOnCIter) + using IterT = typename IterTraits::template + NodeConverter<_NodeT>::Type; + + /// The type of node (const or non-const) over which IterT iterates (e.g., const RootNode<...>) + using NodeT = typename IterT::NodeType; + /// The type of the node with const qualifiers removed ("Non-Const") + using NCNodeT = typename IterT::NonConstNodeType; + /// The type of value (with const qualifiers removed) to which the iterator points + using NCValueT = typename IterT::NonConstValueType; + using ITraits = IterTraits; + /// NodeT's level in its tree (0 = LeafNode) + static const Index Level = 0; + + IterListItem(PrevItemT*): mNext(this), mPrev(nullptr) {} + + IterListItem(const IterListItem& other): + mIter(other.mIter), mNext(other.mNext), mPrev(nullptr) {} + IterListItem& operator=(const IterListItem& other) + { + if (&other != this) { + mIter = other.mIter; + mNext = other.mNext; + mPrev = nullptr; + } + return *this; + } + + void updateBackPointers(PrevItemT* = nullptr) + { + mPrev = nullptr; mNext.updateBackPointers(this); + } + + void setIter(const IterT& iter) { mIter = iter; } + template + void setIter(const OtherIterT& iter) { mNext.setIter(iter); } + + void getNode(Index lvl, NodeT*& node) const + { + node = (lvl == 0) ? mIter.getParentNode() : nullptr; + } + template + void getNode(Index lvl, OtherNodeT*& node) const { mNext.getNode(lvl, node); } + + template + void initLevel(Index lvl, OtherIterListItemT& otherListItem) + { + if (lvl == 0) { + const NodeT* node = nullptr; + otherListItem.getNode(lvl, node); + mIter = (node == nullptr) ? IterT() : ITraits::begin(*const_cast(node)); + } else { + mNext.initLevel(lvl, otherListItem); + } + } + + Index pos(Index lvl) const { return (lvl == 0) ? mIter.pos() : mNext.pos(lvl); } + + bool test(Index lvl) const { return (lvl == 0) ? mIter.test() : mNext.test(lvl); } + + bool next(Index lvl) { return (lvl == 0) ? mIter.next() : mNext.next(lvl); } + + bool down(Index lvl) { return (lvl == 0) ? false : mNext.down(lvl); } + + Coord getCoord(Index lvl) const + { + return (lvl == 0) ? mIter.getCoord() : mNext.getCoord(lvl); + } + Index getChildDim(Index lvl) const + { + return (lvl == 0) ? NodeT::getChildDim() : mNext.getChildDim(lvl); + } + + Index64 getVoxelCount(Index lvl) const + { + return (lvl == 0) ? 1 : mNext.getVoxelCount(lvl); + } + + bool isValueOn(Index lvl) const + { + return (lvl == 0) ? mIter.isValueOn() : mNext.isValueOn(lvl); + } + + const NCValueT& getValue(Index lvl) const + { + if (lvl == 0) return mIter.getValue(); + return mNext.getValue(lvl); + } + + void setValue(Index lvl, const NCValueT& val) const + { + if (lvl == 0) mIter.setValue(val); else mNext.setValue(lvl, val); + } + void setValueOn(Index lvl, bool on = true) const + { + if (lvl == 0) mIter.setValueOn(on); else mNext.setValueOn(lvl, on); + } + void setValueOff(Index lvl) const + { + if (lvl == 0) mIter.setValueOff(); else mNext.setValueOff(lvl); + } + + template + void modifyValue(Index lvl, const ModifyOp& op) const + { + if (lvl == 0) mIter.modifyValue(op); else mNext.modifyValue(lvl, op); + } + +private: + using RestT = typename boost::mpl::pop_front::type; // NodeVecT minus its first item + using NextItem = IterListItem; + + IterT mIter; + NextItem mNext; + PrevItemT* mPrev; +}; + + +/// The final element of a compile-time linked list of iterators to nodes of different types +template +class IterListItem +{ +public: + using _NodeT = typename boost::mpl::front::type; + /// The type of iterator stored in the previous list item + using PrevIterT = typename PrevItemT::IterT; + /// The type of iterator stored in this list item (e.g., RootNode::ValueOnCIter) + using IterT = typename IterTraits::template + NodeConverter<_NodeT>::Type; + + /// The type of node over which IterT iterates (e.g., const RootNode<...>) + using NodeT = typename IterT::NodeType; + /// The type of the node with const qualifiers removed ("Non-Const") + using NCNodeT = typename IterT::NonConstNodeType; + /// The type of value (with const qualifiers removed) to which the iterator points + using NCValueT = typename IterT::NonConstValueType; + /// NodeT's child node type, with the same constness (e.g., const InternalNode<...>) + using ChildT = typename CopyConstness::Type; + /// NodeT's child node type with const qualifiers removed + using NCChildT = typename CopyConstness::Type; + using ITraits = IterTraits; + /// NodeT's level in its tree (0 = LeafNode) + static const Index Level = _Level; + + IterListItem(PrevItemT* prev): mPrev(prev) {} + + IterListItem(const IterListItem& other): mIter(other.mIter), mPrev(nullptr) {} + IterListItem& operator=(const IterListItem& other) + { + if (&other != this) { + mIter = other.mIter; + mPrev = nullptr; ///< @note external call to updateBackPointers() required + } + return *this; + } + + void updateBackPointers(PrevItemT* prev) { mPrev = prev; } + + // The following method specializations differ from the default template + // implementations mainly in that they don't forward. + + void setIter(const IterT& iter) { mIter = iter; } + + void getNode(Index lvl, NodeT*& node) const + { + node = (lvl <= Level) ? mIter.getParentNode() : nullptr; + } + + template + void initLevel(Index lvl, OtherIterListItemT& otherListItem) + { + if (lvl == Level) { + const NodeT* node = nullptr; + otherListItem.getNode(lvl, node); + mIter = (node == nullptr) ? IterT() : ITraits::begin(*const_cast(node)); + } + } + + Index pos(Index lvl) const { return (lvl == Level) ? mIter.pos() : Index(-1); } + + bool test(Index lvl) const { return (lvl == Level) ? mIter.test() : false; } + + bool next(Index lvl) { return (lvl == Level) ? mIter.next() : false; } + + bool down(Index lvl) + { + if (lvl == Level && mPrev != nullptr && mIter) { + if (ChildT* child = ITraits::template getChild(mIter)) { + mPrev->setIter(PrevItemT::ITraits::begin(*child)); + return true; + } + } + return false; + } + + Coord getCoord(Index lvl) const { return (lvl == Level) ? mIter.getCoord() : Coord(); } + Index getChildDim(Index lvl) const { return (lvl == Level) ? NodeT::getChildDim() : 0; } + Index64 getVoxelCount(Index lvl) const { return (lvl == Level) ? ChildT::NUM_VOXELS : 0; } + + bool isValueOn(Index lvl) const { return (lvl == Level) ? mIter.isValueOn() : false; } + + const NCValueT& getValue(Index lvl) const + { + assert(lvl == Level); + (void)lvl; // avoid unused variable warning in optimized builds + return mIter.getValue(); + } + + void setValue(Index lvl, const NCValueT& val) const { if (lvl == Level) mIter.setValue(val); } + void setValueOn(Index lvl, bool on = true) const { if (lvl == Level) mIter.setValueOn(on); } + void setValueOff(Index lvl) const { if (lvl == Level) mIter.setValueOff(); } + + template + void modifyValue(Index lvl, const ModifyOp& op) const + { + if (lvl == Level) mIter.modifyValue(op); + } + +private: + IterT mIter; + PrevItemT* mPrev; +}; + + +//////////////////////////////////////// + + +//#define DEBUG_TREE_VALUE_ITERATOR + +/// @brief Base class for tree-traversal iterators over tile and voxel values +template +class TreeValueIteratorBase +{ +public: + using TreeT = _TreeT; + using ValueIterT = _ValueIterT; + using NodeT = typename ValueIterT::NodeType; + using ValueT = typename ValueIterT::NonConstValueType; + using ChildOnIterT = typename NodeT::ChildOnCIter; + static const Index ROOT_LEVEL = NodeT::LEVEL; + static_assert(ValueIterT::NodeType::LEVEL == ROOT_LEVEL, "invalid value iterator node type"); + static const Index LEAF_LEVEL = 0, ROOT_DEPTH = 0, LEAF_DEPTH = ROOT_LEVEL; + + TreeValueIteratorBase(TreeT&); + + TreeValueIteratorBase(const TreeValueIteratorBase& other); + TreeValueIteratorBase& operator=(const TreeValueIteratorBase& other); + + /// Specify the depth of the highest level of the tree to which to ascend (depth 0 = root). + void setMinDepth(Index minDepth); + /// Return the depth of the highest level of the tree to which this iterator ascends. + Index getMinDepth() const { return ROOT_LEVEL - Index(mMaxLevel); } + /// Specify the depth of the lowest level of the tree to which to descend (depth 0 = root). + void setMaxDepth(Index maxDepth); + /// Return the depth of the lowest level of the tree to which this iterator ascends. + Index getMaxDepth() const { return ROOT_LEVEL - Index(mMinLevel); } + + //@{ + /// Return @c true if this iterator is not yet exhausted. + bool test() const { return mValueIterList.test(mLevel); } + operator bool() const { return this->test(); } + //@} + + /// @brief Advance to the next tile or voxel value. + /// Return @c true if this iterator is not yet exhausted. + bool next(); + /// Advance to the next tile or voxel value. + TreeValueIteratorBase& operator++() { this->next(); return *this; } + + /// @brief Return the level in the tree (0 = leaf) of the node to which + /// this iterator is currently pointing. + Index getLevel() const { return mLevel; } + /// @brief Return the depth in the tree (0 = root) of the node to which + /// this iterator is currently pointing. + Index getDepth() const { return ROOT_LEVEL - mLevel; } + static Index getLeafDepth() { return LEAF_DEPTH; } + + /// @brief Return in @a node a pointer to the node over which this iterator is + /// currently iterating or one of that node's parents, as determined by @a NodeType. + /// @return a null pointer if @a NodeType specifies a node at a lower level + /// of the tree than that given by getLevel(). + template + void getNode(NodeType*& node) const { mValueIterList.getNode(mLevel, node); } + + /// @brief Return the global coordinates of the voxel or tile to which + /// this iterator is currently pointing. + Coord getCoord() const { return mValueIterList.getCoord(mLevel); } + /// @brief Return in @a bbox the axis-aligned bounding box of + /// the voxel or tile to which this iterator is currently pointing. + /// @return false if the bounding box is empty. + bool getBoundingBox(CoordBBox&) const; + /// @brief Return the axis-aligned bounding box of the voxel or tile to which + /// this iterator is currently pointing. + CoordBBox getBoundingBox() const { CoordBBox b; this->getBoundingBox(b); return b; } + + /// Return the number of (virtual) voxels corresponding to the value + Index64 getVoxelCount() const { return mValueIterList.getVoxelCount(mLevel);} + + /// Return @c true if this iterator is currently pointing to a (non-leaf) tile value. + bool isTileValue() const { return mLevel != 0 && this->test(); } + /// Return @c true if this iterator is currently pointing to a (leaf) voxel value. + bool isVoxelValue() const { return mLevel == 0 && this->test(); } + /// Return @c true if the value to which this iterator is currently pointing is active. + bool isValueOn() const { return mValueIterList.isValueOn(mLevel); } + + //@{ + /// Return the tile or voxel value to which this iterator is currently pointing. + const ValueT& getValue() const { return mValueIterList.getValue(mLevel); } + const ValueT& operator*() const { return this->getValue(); } + const ValueT* operator->() const { return &(this->operator*()); } + //@} + + /// @brief Change the tile or voxel value to which this iterator is currently pointing + /// and mark it as active. + void setValue(const ValueT& val) const { mValueIterList.setValue(mLevel, val); } + /// @brief Change the active/inactive state of the tile or voxel value to which + /// this iterator is currently pointing. + void setActiveState(bool on) const { mValueIterList.setValueOn(mLevel, on); } + /// Mark the tile or voxel value to which this iterator is currently pointing as inactive. + void setValueOff() const { mValueIterList.setValueOff(mLevel); } + + /// @brief Apply a functor to the item to which this iterator is pointing. + /// (Not valid for const iterators.) + /// @param op a functor of the form void op(ValueType&) const that modifies + /// its argument in place + /// @see Tree::modifyValue() + template + void modifyValue(const ModifyOp& op) const { mValueIterList.modifyValue(mLevel, op); } + + /// Return a pointer to the tree over which this iterator is iterating. + TreeT* getTree() const { return mTree; } + + /// Return a string (for debugging, mainly) describing this iterator's current state. + std::string summary() const; + +private: + bool advance(bool dontIncrement = false); + + using InvTreeT = typename iter::InvertedTree::Type; + struct PrevChildItem { using IterT = ChildOnIterT; }; + struct PrevValueItem { using IterT = ValueIterT; }; + + IterListItem mChildIterList; + IterListItem mValueIterList; + Index mLevel; + int mMinLevel, mMaxLevel; + TreeT* mTree; +}; // class TreeValueIteratorBase + + +template +inline +TreeValueIteratorBase::TreeValueIteratorBase(TreeT& tree): + mChildIterList(nullptr), + mValueIterList(nullptr), + mLevel(ROOT_LEVEL), + mMinLevel(int(LEAF_LEVEL)), + mMaxLevel(int(ROOT_LEVEL)), + mTree(&tree) +{ + mChildIterList.setIter(IterTraits::begin(tree.root())); + mValueIterList.setIter(IterTraits::begin(tree.root())); + this->advance(/*dontIncrement=*/true); +} + + +template +inline +TreeValueIteratorBase::TreeValueIteratorBase(const TreeValueIteratorBase& other): + mChildIterList(other.mChildIterList), + mValueIterList(other.mValueIterList), + mLevel(other.mLevel), + mMinLevel(other.mMinLevel), + mMaxLevel(other.mMaxLevel), + mTree(other.mTree) +{ + mChildIterList.updateBackPointers(); + mValueIterList.updateBackPointers(); +} + + +template +inline TreeValueIteratorBase& +TreeValueIteratorBase::operator=(const TreeValueIteratorBase& other) +{ + if (&other != this) { + mChildIterList = other.mChildIterList; + mValueIterList = other.mValueIterList; + mLevel = other.mLevel; + mMinLevel = other.mMinLevel; + mMaxLevel = other.mMaxLevel; + mTree = other.mTree; + mChildIterList.updateBackPointers(); + mValueIterList.updateBackPointers(); + } + return *this; +} + + +template +inline void +TreeValueIteratorBase::setMinDepth(Index minDepth) +{ + mMaxLevel = int(ROOT_LEVEL - minDepth); // level = ROOT_LEVEL - depth + if (int(mLevel) > mMaxLevel) this->next(); +} + + +template +inline void +TreeValueIteratorBase::setMaxDepth(Index maxDepth) +{ + // level = ROOT_LEVEL - depth + mMinLevel = int(ROOT_LEVEL - std::min(maxDepth, this->getLeafDepth())); + if (int(mLevel) < mMinLevel) this->next(); +} + + +template +inline bool +TreeValueIteratorBase::next() +{ + do { + if (!this->advance()) return false; + } while (int(mLevel) < mMinLevel || int(mLevel) > mMaxLevel); + return true; +} + + +template +inline bool +TreeValueIteratorBase::advance(bool dontIncrement) +{ + bool recurse = false; + do { + recurse = false; + Index + vPos = mValueIterList.pos(mLevel), + cPos = mChildIterList.pos(mLevel); + if (vPos == cPos && mChildIterList.test(mLevel)) { + /// @todo Once ValueOff iterators properly skip child pointers, remove this block. + mValueIterList.next(mLevel); + vPos = mValueIterList.pos(mLevel); + } + if (vPos < cPos) { + if (dontIncrement) return true; + if (mValueIterList.next(mLevel)) { + if (mValueIterList.pos(mLevel) == cPos && mChildIterList.test(mLevel)) { + /// @todo Once ValueOff iterators properly skip child pointers, + /// remove this block. + mValueIterList.next(mLevel); + } + // If there is a next value and it precedes the next child, return. + if (mValueIterList.pos(mLevel) < cPos) return true; + } + } else { + // Advance to the next child, which may or may not precede the next value. + if (!dontIncrement) mChildIterList.next(mLevel); + } +#ifdef DEBUG_TREE_VALUE_ITERATOR + std::cout << "\n" << this->summary() << std::flush; +#endif + + // Descend to the lowest level at which the next value precedes the next child. + while (mChildIterList.pos(mLevel) < mValueIterList.pos(mLevel)) { +#ifdef ENABLE_TREE_VALUE_DEPTH_BOUND_OPTIMIZATION + if (int(mLevel) == mMinLevel) { + // If the current node lies at the lowest allowed level, none of its + // children can be visited, so just advance its child iterator. + mChildIterList.next(mLevel); + if (mValueIterList.pos(mLevel) == mChildIterList.pos(mLevel) + && mChildIterList.test(mLevel)) + { + /// @todo Once ValueOff iterators properly skip child pointers, + /// remove this block. + mValueIterList.next(mLevel); + } + } else +#endif + if (mChildIterList.down(mLevel)) { + --mLevel; // descend one level + mValueIterList.initLevel(mLevel, mChildIterList); + if (mValueIterList.pos(mLevel) == mChildIterList.pos(mLevel) + && mChildIterList.test(mLevel)) + { + /// @todo Once ValueOff iterators properly skip child pointers, + /// remove this block. + mValueIterList.next(mLevel); + } + } else break; +#ifdef DEBUG_TREE_VALUE_ITERATOR + std::cout << "\n" << this->summary() << std::flush; +#endif + } + // Ascend to the nearest level at which one of the iterators is not yet exhausted. + while (!mChildIterList.test(mLevel) && !mValueIterList.test(mLevel)) { + if (mLevel == ROOT_LEVEL) return false; + ++mLevel; + mChildIterList.next(mLevel); + dontIncrement = true; + recurse = true; + } + } while (recurse); + return true; +} + + +template +inline bool +TreeValueIteratorBase::getBoundingBox(CoordBBox& bbox) const +{ + if (!this->test()) { + bbox = CoordBBox(); + return false; + } + bbox.min() = mValueIterList.getCoord(mLevel); + bbox.max() = bbox.min().offsetBy(mValueIterList.getChildDim(mLevel) - 1); + return true; +} + + +template +inline std::string +TreeValueIteratorBase::summary() const +{ + std::ostringstream ostr; + for (int lvl = int(ROOT_LEVEL); lvl >= 0 && lvl >= int(mLevel); --lvl) { + if (lvl == 0) ostr << "leaf"; + else if (lvl == int(ROOT_LEVEL)) ostr << "root"; + else ostr << "int" << (ROOT_LEVEL - lvl); + ostr << " v" << mValueIterList.pos(lvl) + << " c" << mChildIterList.pos(lvl); + if (lvl > int(mLevel)) ostr << " / "; + } + if (this->test() && mValueIterList.pos(mLevel) < mChildIterList.pos(mLevel)) { + if (mLevel == 0) { + ostr << " " << this->getCoord(); + } else { + ostr << " " << this->getBoundingBox(); + } + } + return ostr.str(); +} + + +//////////////////////////////////////// + + +/// @brief Base class for tree-traversal iterators over all nodes +template +class NodeIteratorBase +{ +public: + using TreeT = _TreeT; + using RootIterT = RootChildOnIterT; + using RootNodeT = typename RootIterT::NodeType; + using NCRootNodeT = typename RootIterT::NonConstNodeType; + static const Index ROOT_LEVEL = RootNodeT::LEVEL; + using InvTreeT = typename iter::InvertedTree::Type; + static const Index LEAF_LEVEL = 0, ROOT_DEPTH = 0, LEAF_DEPTH = ROOT_LEVEL; + + using RootIterTraits = IterTraits; + + NodeIteratorBase(); + NodeIteratorBase(TreeT&); + + NodeIteratorBase(const NodeIteratorBase& other); + NodeIteratorBase& operator=(const NodeIteratorBase& other); + + /// Specify the depth of the highest level of the tree to which to ascend (depth 0 = root). + void setMinDepth(Index minDepth); + /// Return the depth of the highest level of the tree to which this iterator ascends. + Index getMinDepth() const { return ROOT_LEVEL - Index(mMaxLevel); } + /// Specify the depth of the lowest level of the tree to which to descend (depth 0 = root). + void setMaxDepth(Index maxDepth); + /// Return the depth of the lowest level of the tree to which this iterator ascends. + Index getMaxDepth() const { return ROOT_LEVEL - Index(mMinLevel); } + + //@{ + /// Return @c true if this iterator is not yet exhausted. + bool test() const { return !mDone; } + operator bool() const { return this->test(); } + //@} + + /// @brief Advance to the next tile or voxel value. + /// @return @c true if this iterator is not yet exhausted. + bool next(); + /// Advance the iterator to the next leaf node. + void increment() { this->next(); } + NodeIteratorBase& operator++() { this->increment(); return *this; } + /// Increment the iterator n times. + void increment(Index n) { for (Index i = 0; i < n && this->next(); ++i) {} } + + /// @brief Return the level in the tree (0 = leaf) of the node to which + /// this iterator is currently pointing. + Index getLevel() const { return mLevel; } + /// @brief Return the depth in the tree (0 = root) of the node to which + /// this iterator is currently pointing. + Index getDepth() const { return ROOT_LEVEL - mLevel; } + static Index getLeafDepth() { return LEAF_DEPTH; } + + /// @brief Return the global coordinates of the voxel or tile to which + /// this iterator is currently pointing. + Coord getCoord() const; + /// @brief Return in @a bbox the axis-aligned bounding box of + /// the voxel or tile to which this iterator is currently pointing. + /// @return false if the bounding box is empty. + bool getBoundingBox(CoordBBox& bbox) const; + /// @brief Return the axis-aligned bounding box of the voxel or tile to which + /// this iterator is currently pointing. + CoordBBox getBoundingBox() const { CoordBBox b; this->getBoundingBox(b); return b; } + + //@{ + /// @brief Return the node to which the iterator is pointing. + /// @note This iterator doesn't have the usual dereference operators (* and ->), + /// because they would have to be overloaded by the returned node type. + template + void getNode(NodeT*& node) const { node = nullptr; mIterList.getNode(mLevel, node); } + template + void getNode(const NodeT*& node) const { node = nullptr; mIterList.getNode(mLevel, node); } + //@} + + TreeT* getTree() const { return mTree; } + + std::string summary() const; + +private: + struct PrevItem { using IterT = RootIterT; }; + + IterListItem mIterList; + Index mLevel; + int mMinLevel, mMaxLevel; + bool mDone; + TreeT* mTree; +}; // class NodeIteratorBase + + +template +inline +NodeIteratorBase::NodeIteratorBase(): + mIterList(nullptr), + mLevel(ROOT_LEVEL), + mMinLevel(int(LEAF_LEVEL)), + mMaxLevel(int(ROOT_LEVEL)), + mDone(true), + mTree(nullptr) +{ +} + + +template +inline +NodeIteratorBase::NodeIteratorBase(TreeT& tree): + mIterList(nullptr), + mLevel(ROOT_LEVEL), + mMinLevel(int(LEAF_LEVEL)), + mMaxLevel(int(ROOT_LEVEL)), + mDone(false), + mTree(&tree) +{ + mIterList.setIter(RootIterTraits::begin(tree.root())); +} + + +template +inline +NodeIteratorBase::NodeIteratorBase(const NodeIteratorBase& other): + mIterList(other.mIterList), + mLevel(other.mLevel), + mMinLevel(other.mMinLevel), + mMaxLevel(other.mMaxLevel), + mDone(other.mDone), + mTree(other.mTree) +{ + mIterList.updateBackPointers(); +} + + +template +inline NodeIteratorBase& +NodeIteratorBase::operator=(const NodeIteratorBase& other) +{ + if (&other != this) { + mLevel = other.mLevel; + mMinLevel = other.mMinLevel; + mMaxLevel = other.mMaxLevel; + mDone = other.mDone; + mTree = other.mTree; + mIterList = other.mIterList; + mIterList.updateBackPointers(); + } + return *this; +} + + +template +inline void +NodeIteratorBase::setMinDepth(Index minDepth) +{ + mMaxLevel = int(ROOT_LEVEL - minDepth); // level = ROOT_LEVEL - depth + if (int(mLevel) > mMaxLevel) this->next(); +} + + +template +inline void +NodeIteratorBase::setMaxDepth(Index maxDepth) +{ + // level = ROOT_LEVEL - depth + mMinLevel = int(ROOT_LEVEL - std::min(maxDepth, this->getLeafDepth())); + if (int(mLevel) < mMinLevel) this->next(); +} + + +template +inline bool +NodeIteratorBase::next() +{ + do { + if (mDone) return false; + + // If the iterator over the current node points to a child, + // descend to the child (depth-first traversal). + if (int(mLevel) > mMinLevel && mIterList.test(mLevel)) { + if (!mIterList.down(mLevel)) return false; + --mLevel; + } else { + // Ascend to the nearest ancestor that has other children. + while (!mIterList.test(mLevel)) { + if (mLevel == ROOT_LEVEL) { + // Can't ascend higher than the root. + mDone = true; + return false; + } + ++mLevel; // ascend one level + mIterList.next(mLevel); // advance to the next child, if there is one + } + // Descend to the child. + if (!mIterList.down(mLevel)) return false; + --mLevel; + } + } while (int(mLevel) < mMinLevel || int(mLevel) > mMaxLevel); + return true; +} + + +template +inline Coord +NodeIteratorBase::getCoord() const +{ + if (mLevel != ROOT_LEVEL) return mIterList.getCoord(mLevel + 1); + RootNodeT* root = nullptr; + this->getNode(root); + return root ? root->getMinIndex() : Coord::min(); +} + + +template +inline bool +NodeIteratorBase::getBoundingBox(CoordBBox& bbox) const +{ + if (mLevel == ROOT_LEVEL) { + RootNodeT* root = nullptr; + this->getNode(root); + if (root == nullptr) { + bbox = CoordBBox(); + return false; + } + root->getIndexRange(bbox); + return true; + } + bbox.min() = mIterList.getCoord(mLevel + 1); + bbox.max() = bbox.min().offsetBy(mIterList.getChildDim(mLevel + 1) - 1); + return true; +} + + +template +inline std::string +NodeIteratorBase::summary() const +{ + std::ostringstream ostr; + for (int lvl = int(ROOT_LEVEL); lvl >= 0 && lvl >= int(mLevel); --lvl) { + if (lvl == 0) ostr << "leaf"; + else if (lvl == int(ROOT_LEVEL)) ostr << "root"; + else ostr << "int" << (ROOT_LEVEL - lvl); + ostr << " c" << mIterList.pos(lvl); + if (lvl > int(mLevel)) ostr << " / "; + } + CoordBBox bbox; + this->getBoundingBox(bbox); + ostr << " " << bbox; + return ostr.str(); +} + + +//////////////////////////////////////// + + +/// @brief Base class for tree-traversal iterators over all leaf nodes (but not leaf voxels) +template +class LeafIteratorBase +{ +public: + using RootIterT = RootChildOnIterT; + using RootNodeT = typename RootIterT::NodeType; + using NCRootNodeT = typename RootIterT::NonConstNodeType; + static const Index ROOT_LEVEL = RootNodeT::LEVEL; + using InvTreeT = typename iter::InvertedTree::Type; + using NCLeafNodeT = typename boost::mpl::front::type; + using LeafNodeT = typename CopyConstness::Type; + static const Index LEAF_LEVEL = 0, LEAF_PARENT_LEVEL = LEAF_LEVEL + 1; + + using RootIterTraits = IterTraits; + + LeafIteratorBase(): mIterList(nullptr), mTree(nullptr) {} + + LeafIteratorBase(TreeT& tree): mIterList(nullptr), mTree(&tree) + { + // Initialize the iterator list with a root node iterator. + mIterList.setIter(RootIterTraits::begin(tree.root())); + // Descend along the first branch, initializing the node iterator at each level. + Index lvl = ROOT_LEVEL; + for ( ; lvl > 0 && mIterList.down(lvl); --lvl) {} + // If the first branch terminated above the leaf level, backtrack to the next branch. + if (lvl > 0) this->next(); + } + + LeafIteratorBase(const LeafIteratorBase& other): mIterList(other.mIterList), mTree(other.mTree) + { + mIterList.updateBackPointers(); + } + LeafIteratorBase& operator=(const LeafIteratorBase& other) + { + if (&other != this) { + mTree = other.mTree; + mIterList = other.mIterList; + mIterList.updateBackPointers(); + } + return *this; + } + + //@{ + /// Return the leaf node to which the iterator is pointing. + LeafNodeT* getLeaf() const + { + LeafNodeT* n = nullptr; + mIterList.getNode(LEAF_LEVEL, n); + return n; + } + LeafNodeT& operator*() const { return *this->getLeaf(); } + LeafNodeT* operator->() const { return this->getLeaf(); } + //@} + + bool test() const { return mIterList.test(LEAF_PARENT_LEVEL); } + operator bool() const { return this->test(); } + + //@{ + /// Advance the iterator to the next leaf node. + bool next(); + void increment() { this->next(); } + LeafIteratorBase& operator++() { this->increment(); return *this; } + //@} + /// Increment the iterator n times. + void increment(Index n) { for (Index i = 0; i < n && this->next(); ++i) {} } + + TreeT* getTree() const { return mTree; } + +private: + struct PrevItem { using IterT = RootIterT; }; + + /// @note Even though a LeafIterator doesn't iterate over leaf voxels, + /// the first item of this linked list of node iterators is a leaf node iterator, + /// whose purpose is only to provide access to its parent leaf node. + IterListItem mIterList; + TreeT* mTree; +}; // class LeafIteratorBase + + +template +inline bool +LeafIteratorBase::next() +{ + // If the iterator is valid for the current node one level above the leaf level, + // advance the iterator to the node's next child. + if (mIterList.test(LEAF_PARENT_LEVEL) && mIterList.next(LEAF_PARENT_LEVEL)) { + mIterList.down(LEAF_PARENT_LEVEL); // initialize the leaf iterator + return true; + } + + Index lvl = LEAF_PARENT_LEVEL; + while (!mIterList.test(LEAF_PARENT_LEVEL)) { + if (mIterList.test(lvl)) { + mIterList.next(lvl); + } else { + do { + // Ascend to the nearest level at which + // one of the iterators is not yet exhausted. + if (lvl == ROOT_LEVEL) return false; + ++lvl; + if (mIterList.test(lvl)) mIterList.next(lvl); + } while (!mIterList.test(lvl)); + } + // Descend to the lowest child, but not as far as the leaf iterator. + while (lvl > LEAF_PARENT_LEVEL && mIterList.down(lvl)) --lvl; + } + mIterList.down(LEAF_PARENT_LEVEL); // initialize the leaf iterator + return true; +} + + +//////////////////////////////////////// + + +/// An IteratorRange wraps a tree or node iterator, giving the iterator TBB +/// splittable range semantics. +template +class IteratorRange +{ +public: + IteratorRange(const IterT& iter, size_t grainSize = 8): + mIter(iter), + mGrainSize(grainSize), + mSize(0) + { + mSize = this->size(); + } + IteratorRange(IteratorRange& other, tbb::split): + mIter(other.mIter), + mGrainSize(other.mGrainSize), + mSize(other.mSize >> 1) + { + other.increment(mSize); + } + + /// @brief Return a reference to this range's iterator. + /// @note The reference is const, because the iterator should not be + /// incremented directly. Use this range object's increment() instead. + const IterT& iterator() const { return mIter; } + + bool empty() const { return mSize == 0 || !mIter.test(); } + bool test() const { return !this->empty(); } + operator bool() const { return !this->empty(); } + + /// @brief Return @c true if this range is splittable (i.e., if the iterator + /// can be advanced more than mGrainSize times). + bool is_divisible() const { return mSize > mGrainSize; } + + /// Advance the iterator @a n times. + void increment(Index n = 1) { for ( ; n > 0 && mSize > 0; --n, --mSize, ++mIter) {} } + /// Advance the iterator to the next item. + IteratorRange& operator++() { this->increment(); return *this; } + /// @brief Advance the iterator to the next item. + /// @return @c true if the iterator is not yet exhausted. + bool next() { this->increment(); return this->test(); } + +private: + Index size() const { Index n = 0; for (IterT it(mIter); it.test(); ++n, ++it) {} return n; } + + IterT mIter; + size_t mGrainSize; + /// @note mSize is only an estimate of the number of times mIter can be incremented + /// before it is exhausted (because the topology of the underlying tree could change + /// during iteration). For the purpose of range splitting, though, that should be + /// sufficient, since the two halves need not be of exactly equal size. + Index mSize; +}; + + +//////////////////////////////////////// + + +/// @brief Base class for tree-traversal iterators over real and virtual voxel values +/// @todo class TreeVoxelIteratorBase; + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_TREEITERATOR_HAS_BEEN_INCLUDED diff --git a/openvdb/tree/ValueAccessor.h b/openvdb/tree/ValueAccessor.h new file mode 100644 index 00000000..cd3ffdc4 --- /dev/null +++ b/openvdb/tree/ValueAccessor.h @@ -0,0 +1,2634 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file tree/ValueAccessor.h +/// +/// When traversing a grid in a spatially coherent pattern (e.g., iterating +/// over neighboring voxels), request a @c ValueAccessor from the grid +/// (with Grid::getAccessor()) and use the accessor's @c getValue() and +/// @c setValue() methods. These will typically be significantly faster +/// than accessing voxels directly in the grid's tree. +/// +/// @par Example: +/// +/// @code +/// FloatGrid grid; +/// FloatGrid::Accessor acc = grid.getAccessor(); +/// // First access is slow: +/// acc.setValue(Coord(0, 0, 0), 100); +/// // Subsequent nearby accesses are fast, since the accessor now holds pointers +/// // to nodes that contain (0, 0, 0) along the path from the root of the grid's +/// // tree to the leaf: +/// acc.setValue(Coord(0, 0, 1), 100); +/// acc.getValue(Coord(0, 2, 0), 100); +/// // Slow, because the accessor must be repopulated: +/// acc.getValue(Coord(-1, -1, -1)); +/// // Fast: +/// acc.getValue(Coord(-1, -1, -2)); +/// acc.setValue(Coord(-1, -2, 0), -100); +/// @endcode + +#ifndef OPENVDB_TREE_VALUEACCESSOR_HAS_BEEN_INCLUDED +#define OPENVDB_TREE_VALUEACCESSOR_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace tree { + +// Forward declarations of local classes that are not intended for general use +// The IsSafe template parameter is explained in the warning below. +template +class ValueAccessor0; +template +class ValueAccessor1; +template +class ValueAccessor2; +template +class ValueAccessor3; +template class CacheItem; + + +/// @brief This base class for ValueAccessors manages registration of an accessor +/// with a tree so that the tree can automatically clear the accessor whenever +/// one of its nodes is deleted. +/// +/// @internal A base class is needed because ValueAccessor is templated on both +/// a Tree type and a mutex type. The various instantiations of the template +/// are distinct, unrelated types, so they can't easily be stored in a container +/// such as the Tree's CacheRegistry. This base class, in contrast, is templated +/// only on the Tree type, so for any given Tree, only two distinct instantiations +/// are possible, ValueAccessorBase and ValueAccessorBase. +/// +/// @warning If IsSafe = false then the ValueAccessor will not register itself +/// with the tree from which it is constructed. While in some rare cases this can +/// lead to better performance (since it avoids the small overhead of insertion +/// on creation and deletion on destruction) it is also unsafe if the tree is +/// modified. So unless you're an expert it is highly recommended to set +/// IsSafe = true, which is the default in all derived ValueAccessors defined +/// below. However if you know that the tree is no being modifed for the lifespan +/// of the ValueAccessor AND the work performed per ValueAccessor is small relative +/// to overhead of registering it you should consider setting IsSafe = false. If +/// this turns out to improve performance you should really rewrite your code so as +/// to better amortize the construction of the ValueAccessor, i.e. reuse it as much +/// as possible! +template +class ValueAccessorBase +{ +public: + static const bool IsConstTree = std::is_const::value; + + /// @brief Return true if this accessor is safe, i.e. registered + /// by the tree from which it is constructed. Un-registered + /// accessors can in rare cases be faster because it avoids the + /// (small) overhead of registration, but they are unsafe if the + /// tree is modified. So unless you're an expert it is highly + /// recommended to set IsSafe = true (which is the default). + static bool isSafe() { return IsSafe; } + + ValueAccessorBase(TreeType& tree): mTree(&tree) + { + if (IsSafe) tree.attachAccessor(*this); + } + + virtual ~ValueAccessorBase() { if (IsSafe && mTree) mTree->releaseAccessor(*this); } + + /// @brief Return a pointer to the tree associated with this accessor. + /// @details The pointer will be null only if the tree from which this accessor + /// was constructed was subsequently deleted (which generally leaves the + /// accessor in an unsafe state). + TreeType* getTree() const { return mTree; } + /// Return a reference to the tree associated with this accessor. + TreeType& tree() const { assert(mTree); return *mTree; } + + ValueAccessorBase(const ValueAccessorBase& other): mTree(other.mTree) + { + if (IsSafe && mTree) mTree->attachAccessor(*this); + } + + ValueAccessorBase& operator=(const ValueAccessorBase& other) + { + if (&other != this) { + if (IsSafe && mTree) mTree->releaseAccessor(*this); + mTree = other.mTree; + if (IsSafe && mTree) mTree->attachAccessor(*this); + } + return *this; + } + + virtual void clear() = 0; + +protected: + // Allow trees to deregister themselves. + template friend class Tree; + + virtual void release() { mTree = nullptr; } + + TreeType* mTree; +}; // class ValueAccessorBase + + +//////////////////////////////////////// + + +/// When traversing a grid in a spatially coherent pattern (e.g., iterating +/// over neighboring voxels), request a @c ValueAccessor from the grid +/// (with Grid::getAccessor()) and use the accessor's @c getValue() and +/// @c setValue() methods. These will typically be significantly faster +/// than accessing voxels directly in the grid's tree. +/// +/// A ValueAccessor caches pointers to tree nodes along the path to a voxel (x, y, z). +/// A subsequent access to voxel (x', y', z') starts from the cached leaf node and +/// moves up until a cached node that encloses (x', y', z') is found, then traverses +/// down the tree from that node to a leaf, updating the cache with the new path. +/// This leads to significant acceleration of spatially-coherent accesses. +/// +/// @param _TreeType the type of the tree to be accessed [required] +/// @param IsSafe if IsSafe = false then the ValueAccessor will +/// not register itself with the tree from which +/// it is consturcted (see warning). +/// @param CacheLevels the number of nodes to be cached, starting from the leaf level +/// and not including the root (i.e., CacheLevels < DEPTH), +/// and defaulting to all non-root nodes +/// @param MutexType the type of mutex to use (see note) +/// +/// @warning If IsSafe = false then the ValueAccessor will not register itself +/// with the tree from which it is constructed. While in some rare cases this can +/// lead to better performance (since it avoids the small overhead of insertion +/// on creation and deletion on destruction) it is also unsafe if the tree is +/// modified. So unless you're an expert it is highly recommended to set +/// IsSafe = true, which is the default. However if you know that the tree is no +/// being modifed for the lifespan of the ValueAccessor AND the work performed +/// per ValueAccessor is small relative to overhead of registering it you should +/// consider setting IsSafe = false. If this improves performance you should +/// really rewrite your code so as to better amortize the construction of the +/// ValueAccessor, i.e. reuse it as much as possible! +/// +/// @note If @c MutexType is a TBB-compatible mutex, then multiple threads may +/// safely access a single, shared accessor. However, it is highly recommended +/// that, instead, each thread be assigned its own, non-mutex-protected accessor. +template +class ValueAccessor: public ValueAccessorBase<_TreeType, IsSafe> +{ +public: + static_assert(CacheLevels < _TreeType::DEPTH, "cache size exceeds tree depth"); + + using TreeType = _TreeType; + using RootNodeT = typename TreeType::RootNodeType; + using LeafNodeT = typename TreeType::LeafNodeType; + using ValueType = typename RootNodeT::ValueType; + using BaseT = ValueAccessorBase; + using LockT = typename MutexType::scoped_lock; + using BaseT::IsConstTree; + + ValueAccessor(TreeType& tree): BaseT(tree), mCache(*this) + { + mCache.insert(Coord(), &tree.root()); + } + + ValueAccessor(const ValueAccessor& other): BaseT(other), mCache(*this, other.mCache) {} + + ValueAccessor& operator=(const ValueAccessor& other) + { + if (&other != this) { + this->BaseT::operator=(other); + mCache.copy(*this, other.mCache); + } + return *this; + } + ~ValueAccessor() override = default; + + /// Return the number of cache levels employed by this accessor. + static Index numCacheLevels() { return CacheLevels; } + + /// Return @c true if nodes along the path to the given voxel have been cached. + bool isCached(const Coord& xyz) const { LockT lock(mMutex); return mCache.isCached(xyz); } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const + { + LockT lock(mMutex); + return mCache.getValue(xyz); + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) const { LockT lock(mMutex); return mCache.isValueOn(xyz); } + + /// Return the active state of the voxel as well as its value + bool probeValue(const Coord& xyz, ValueType& value) const + { + LockT lock(mMutex); + return mCache.probeValue(xyz,value); + } + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides, + /// or -1 if (x, y, z) isn't explicitly represented in the tree (i.e., if it is + /// implicitly a background voxel). + int getValueDepth(const Coord& xyz) const + { + LockT lock(mMutex); + return mCache.getValueDepth(xyz); + } + + /// Return @c true if the value of voxel (x, y, z) resides at the leaf level + /// of the tree, i.e., if it is not a tile value. + bool isVoxel(const Coord& xyz) const { LockT lock(mMutex); return mCache.isVoxel(xyz); } + + //@{ + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + LockT lock(mMutex); + mCache.setValue(xyz, value); + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + //@} + + /// Set the value of the voxel at the given coordinate but don't change its active state. + void setValueOnly(const Coord& xyz, const ValueType& value) + { + LockT lock(mMutex); + mCache.setValueOnly(xyz, value); + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + LockT lock(mMutex); + mCache.setValueOff(xyz, value); + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + LockT lock(mMutex); + mCache.modifyValue(xyz, op); + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + LockT lock(mMutex); + mCache.modifyValueAndActiveState(xyz, op); + } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on = true) + { + LockT lock(mMutex); + mCache.setActiveState(xyz, on); + } + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz) { this->setActiveState(xyz, true); } + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz) { this->setActiveState(xyz, false); } + + /// Return the cached node of type @a NodeType. [Mainly for internal use] + template + NodeType* getNode() + { + LockT lock(mMutex); + NodeType* node = nullptr; + mCache.getNode(node); + return node; + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). [Mainly for internal use] + template + void insertNode(const Coord& xyz, NodeType& node) + { + LockT lock(mMutex); + mCache.insert(xyz, &node); + } + + /// If a node of the given type exists in the cache, remove it, so that + /// isCached(xyz) returns @c false for any voxel (x, y, z) contained in + /// that node. [Mainly for internal use] + template + void eraseNode() { LockT lock(mMutex); NodeType* node = nullptr; mCache.erase(node); } + + /// @brief Add the specified leaf to this tree, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeT* leaf) + { + LockT lock(mMutex); + mCache.addLeaf(leaf); + } + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly deleting existing nodes or creating new nodes in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + LockT lock(mMutex); + mCache.addTile(level, xyz, value, state); + } + + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z). + /// If no such node exists, create one, but preserve the values and + /// active states of all voxels. + /// @details Use this method to preallocate a static tree topology + /// over which to safely perform multithreaded processing. + LeafNodeT* touchLeaf(const Coord& xyz) + { + LockT lock(mMutex); + return mCache.touchLeaf(xyz); + } + + //@{ + /// @brief Return a pointer to the node of the specified type that contains + /// voxel (x, y, z), or @c nullptr if no such node exists. + template + NodeT* probeNode(const Coord& xyz) + { + LockT lock(mMutex); + return mCache.template probeNode(xyz); + } + template + const NodeT* probeConstNode(const Coord& xyz) const + { + LockT lock(mMutex); + return mCache.template probeConstNode(xyz); + } + template + const NodeT* probeNode(const Coord& xyz) const + { + return this->template probeConstNode(xyz); + } + //@} + + //@{ + /// @brief Return a pointer to the leaf node that contains voxel (x, y, z), + /// or @c nullptr if no such node exists. + LeafNodeT* probeLeaf(const Coord& xyz) + { + LockT lock(mMutex); + return mCache.probeLeaf(xyz); + } + const LeafNodeT* probeConstLeaf(const Coord& xyz) const + { + LockT lock(mMutex); + return mCache.probeConstLeaf(xyz); + } + const LeafNodeT* probeLeaf(const Coord& xyz) const { return this->probeConstLeaf(xyz); } + //@} + + /// Remove all nodes from this cache, then reinsert the root node. + void clear() override + { + LockT lock(mMutex); + mCache.clear(); + if (this->mTree) mCache.insert(Coord(), &(this->mTree->root())); + } + +private: + // Allow nodes to insert themselves into the cache. + template friend class RootNode; + template friend class InternalNode; + template friend class LeafNode; + // Allow trees to deregister themselves. + template friend class Tree; + + /// Prevent this accessor from calling Tree::releaseCache() on a tree that + /// no longer exists. (Called by mTree when it is destroyed.) + void release() override + { + LockT lock(mMutex); + this->BaseT::release(); + mCache.clear(); + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). + /// @note This operation is not mutex-protected and is intended to be called + /// only by nodes and only in the context of a getValue() or setValue() call. + template + void insert(const Coord& xyz, NodeType* node) { mCache.insert(xyz, node); } + + // Define a list of all tree node types from LeafNode to RootNode + using InvTreeT = typename RootNodeT::NodeChainType; + // Remove all tree node types that are excluded from the cache + using BeginT = typename boost::mpl::begin::type; + using FirstT = typename boost::mpl::advance>::type; + using LastT = typename boost::mpl::find::type; + using SubtreeT = typename boost::mpl::erase::type; + using CacheItemT = CacheItem::value==1>; + + // Private member data + mutable CacheItemT mCache; + mutable MutexType mMutex; + +}; // class ValueAccessor + + +/// @brief Template specialization of the ValueAccessor with no mutex and no cache levels +/// @details This specialization is provided mainly for benchmarking. +/// Accessors with caching will almost always be faster. +template +class ValueAccessor + : public ValueAccessor0 +{ +public: + ValueAccessor(TreeType& tree): ValueAccessor0(tree) {} + ValueAccessor(const ValueAccessor& other): ValueAccessor0(other) {} + ~ValueAccessor() override = default; +}; + + +/// Template specialization of the ValueAccessor with no mutex and one cache level +template +class ValueAccessor + : public ValueAccessor1 +{ +public: + ValueAccessor(TreeType& tree): ValueAccessor1(tree) {} + ValueAccessor(const ValueAccessor& other): ValueAccessor1(other) {} + ~ValueAccessor() override = default; +}; + + +/// Template specialization of the ValueAccessor with no mutex and two cache levels +template +class ValueAccessor + : public ValueAccessor2 +{ +public: + ValueAccessor(TreeType& tree): ValueAccessor2(tree) {} + ValueAccessor(const ValueAccessor& other): ValueAccessor2(other) {} + ~ValueAccessor() override = default; +}; + + +/// Template specialization of the ValueAccessor with no mutex and three cache levels +template +class ValueAccessor: public ValueAccessor3 +{ +public: + ValueAccessor(TreeType& tree): ValueAccessor3(tree) {} + ValueAccessor(const ValueAccessor&) = default; + ValueAccessor& operator=(const ValueAccessor&) = default; + ~ValueAccessor() override = default; +}; + + +//////////////////////////////////////// + + +/// @brief This accessor is thread-safe (at the cost of speed) for both reading and +/// writing to a tree. That is, multiple threads may safely access a single, +/// shared ValueAccessorRW. +/// +/// @warning Since the mutex-locking employed by the ValueAccessorRW +/// can seriously impair performance of multithreaded applications, it +/// is recommended that, instead, each thread be assigned its own +/// (non-mutex protected) accessor. +template +class ValueAccessorRW: public ValueAccessor +{ +public: + ValueAccessorRW(TreeType& tree) + : ValueAccessor(tree) + { + } +}; + + +//////////////////////////////////////// + + +// +// The classes below are for internal use and should rarely be used directly. +// + +// An element of a compile-time linked list of node pointers, ordered from LeafNode to RootNode +template +class CacheItem +{ +public: + using NodeType = typename boost::mpl::front::type; + using ValueType = typename NodeType::ValueType; + using LeafNodeType = typename NodeType::LeafNodeType; + using CoordLimits = std::numeric_limits; + + CacheItem(TreeCacheT& parent): + mParent(&parent), + mHash(CoordLimits::max()), + mNode(nullptr), + mNext(parent) + { + } + + //@{ + /// Copy another CacheItem's node pointers and hash keys, but not its parent pointer. + CacheItem(TreeCacheT& parent, const CacheItem& other): + mParent(&parent), + mHash(other.mHash), + mNode(other.mNode), + mNext(parent, other.mNext) + { + } + + CacheItem& copy(TreeCacheT& parent, const CacheItem& other) + { + mParent = &parent; + mHash = other.mHash; + mNode = other.mNode; + mNext.copy(parent, other.mNext); + return *this; + } + //@} + + bool isCached(const Coord& xyz) const + { + return (this->isHashed(xyz) || mNext.isCached(xyz)); + } + + /// Cache the given node at this level. + void insert(const Coord& xyz, const NodeType* node) + { + mHash = (node != nullptr) ? xyz & ~(NodeType::DIM-1) : Coord::max(); + mNode = node; + } + /// Forward the given node to another level of the cache. + template + void insert(const Coord& xyz, const OtherNodeType* node) { mNext.insert(xyz, node); } + + /// Erase the node at this level. + void erase(const NodeType*) { mHash = Coord::max(); mNode = nullptr; } + /// Erase the node at another level of the cache. + template + void erase(const OtherNodeType* node) { mNext.erase(node); } + + /// Erase the nodes at this and lower levels of the cache. + void clear() { mHash = Coord::max(); mNode = nullptr; mNext.clear(); } + + /// Return the cached node (if any) at this level. + void getNode(const NodeType*& node) const { node = mNode; } + void getNode(const NodeType*& node) { node = mNode; } + void getNode(NodeType*& node) + { + // This combination of a static assertion and a const_cast might not be elegant, + // but it is a lot simpler than specializing TreeCache for const Trees. + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + node = const_cast(mNode); + } + /// Forward the request to another level of the cache. + template + void getNode(OtherNodeType*& node) { mNext.getNode(node); } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) + { + if (this->isHashed(xyz)) { + assert(mNode); + return mNode->getValueAndCache(xyz, *mParent); + } + return mNext.getValue(xyz); + } + + void addLeaf(LeafNodeType* leaf) + { + static_assert(!TreeCacheT::IsConstTree, "can't add a node to a const tree"); + if (NodeType::LEVEL == 0) return; + if (this->isHashed(leaf->origin())) { + assert(mNode); + return const_cast(mNode)->addLeafAndCache(leaf, *mParent); + } + mNext.addLeaf(leaf); + } + + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + static_assert(!TreeCacheT::IsConstTree, "can't add a tile to a const tree"); + if (NodeType::LEVEL < level) return; + if (this->isHashed(xyz)) { + assert(mNode); + return const_cast(mNode)->addTileAndCache( + level, xyz, value, state, *mParent); + } + mNext.addTile(level, xyz, value, state); + } + + LeafNodeType* touchLeaf(const Coord& xyz) + { + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + if (this->isHashed(xyz)) { + assert(mNode); + return const_cast(mNode)->touchLeafAndCache(xyz, *mParent); + } + return mNext.touchLeaf(xyz); + } + + LeafNodeType* probeLeaf(const Coord& xyz) + { + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + if (this->isHashed(xyz)) { + assert(mNode); + return const_cast(mNode)->probeLeafAndCache(xyz, *mParent); + } + return mNext.probeLeaf(xyz); + } + + const LeafNodeType* probeConstLeaf(const Coord& xyz) + { + if (this->isHashed(xyz)) { + assert(mNode); + return mNode->probeConstLeafAndCache(xyz, *mParent); + } + return mNext.probeConstLeaf(xyz); + } + + template + NodeT* probeNode(const Coord& xyz) + { + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (this->isHashed(xyz)) { + if ((std::is_same::value)) { + assert(mNode); + return reinterpret_cast(const_cast(mNode)); + } + return const_cast(mNode)->template probeNodeAndCache(xyz, *mParent); + } + return mNext.template probeNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + template + const NodeT* probeConstNode(const Coord& xyz) + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (this->isHashed(xyz)) { + if ((std::is_same::value)) { + assert(mNode); + return reinterpret_cast(mNode); + } + return mNode->template probeConstNodeAndCache(xyz, *mParent); + } + return mNext.template probeConstNode(xyz); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) + { + if (this->isHashed(xyz)) { + assert(mNode); + return mNode->isValueOnAndCache(xyz, *mParent); + } + return mNext.isValueOn(xyz); + } + + /// Return the active state and value of the voxel at the given coordinates. + bool probeValue(const Coord& xyz, ValueType& value) + { + if (this->isHashed(xyz)) { + assert(mNode); + return mNode->probeValueAndCache(xyz, value, *mParent); + } + return mNext.probeValue(xyz, value); + } + + int getValueDepth(const Coord& xyz) + { + if (this->isHashed(xyz)) { + assert(mNode); + return static_cast(TreeCacheT::RootNodeT::LEVEL) - + static_cast(mNode->getValueLevelAndCache(xyz, *mParent)); + } else { + return mNext.getValueDepth(xyz); + } + } + + bool isVoxel(const Coord& xyz) + { + if (this->isHashed(xyz)) { + assert(mNode); + return mNode->getValueLevelAndCache(xyz, *mParent)==0; + } else { + return mNext.isVoxel(xyz); + } + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->setValueAndCache(xyz, value, *mParent); + } else { + mNext.setValue(xyz, value); + } + } + void setValueOnly(const Coord& xyz, const ValueType& value) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->setValueOnlyAndCache(xyz, value, *mParent); + } else { + mNext.setValueOnly(xyz, value); + } + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->modifyValueAndCache(xyz, op, *mParent); + } else { + mNext.modifyValue(xyz, op); + } + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->modifyValueAndActiveStateAndCache(xyz, op, *mParent); + } else { + mNext.modifyValueAndActiveState(xyz, op); + } + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->setValueOffAndCache(xyz, value, *mParent); + } else { + mNext.setValueOff(xyz, value); + } + } + + /// Set the active state of the voxel at the given coordinates. + void setActiveState(const Coord& xyz, bool on) + { + if (this->isHashed(xyz)) { + assert(mNode); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mNode)->setActiveStateAndCache(xyz, on, *mParent); + } else { + mNext.setActiveState(xyz, on); + } + } + +private: + CacheItem(const CacheItem&); + CacheItem& operator=(const CacheItem&); + + bool isHashed(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeType::DIM-1)) == mHash[0] + && (xyz[1] & ~Coord::ValueType(NodeType::DIM-1)) == mHash[1] + && (xyz[2] & ~Coord::ValueType(NodeType::DIM-1)) == mHash[2]; + } + + TreeCacheT* mParent; + Coord mHash; + const NodeType* mNode; + using RestT = typename boost::mpl::pop_front::type; // NodeVecT minus its first item + CacheItem::value == 1> mNext; +};// end of CacheItem + + +/// The tail of a compile-time list of cached node pointers, ordered from LeafNode to RootNode +template +class CacheItem +{ +public: + using RootNodeType = typename boost::mpl::front::type; + using ValueType = typename RootNodeType::ValueType; + using LeafNodeType = typename RootNodeType::LeafNodeType; + + CacheItem(TreeCacheT& parent): mParent(&parent), mRoot(nullptr) {} + CacheItem(TreeCacheT& parent, const CacheItem& other): mParent(&parent), mRoot(other.mRoot) {} + + CacheItem& copy(TreeCacheT& parent, const CacheItem& other) + { + mParent = &parent; + mRoot = other.mRoot; + return *this; + } + + bool isCached(const Coord& xyz) const { return this->isHashed(xyz); } + + void insert(const Coord&, const RootNodeType* root) { mRoot = root; } + + // Needed for node types that are not cached + template + void insert(const Coord&, const OtherNodeType*) {} + + void erase(const RootNodeType*) { mRoot = nullptr; } + + void clear() { mRoot = nullptr; } + + void getNode(RootNodeType*& node) + { + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + node = const_cast(mRoot); + } + void getNode(const RootNodeType*& node) const { node = mRoot; } + + void addLeaf(LeafNodeType* leaf) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't add a node to a const tree"); + const_cast(mRoot)->addLeafAndCache(leaf, *mParent); + } + + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't add a tile to a const tree"); + const_cast(mRoot)->addTileAndCache(level, xyz, value, state, *mParent); + } + + LeafNodeType* touchLeaf(const Coord& xyz) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + return const_cast(mRoot)->touchLeafAndCache(xyz, *mParent); + } + + LeafNodeType* probeLeaf(const Coord& xyz) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + return const_cast(mRoot)->probeLeafAndCache(xyz, *mParent); + } + + const LeafNodeType* probeConstLeaf(const Coord& xyz) + { + assert(mRoot); + return mRoot->probeConstLeafAndCache(xyz, *mParent); + } + + template + NodeType* probeNode(const Coord& xyz) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't get a non-const node from a const tree"); + return const_cast(mRoot)-> + template probeNodeAndCache(xyz, *mParent); + } + + template + const NodeType* probeConstNode(const Coord& xyz) + { + assert(mRoot); + return mRoot->template probeConstNodeAndCache(xyz, *mParent); + } + + int getValueDepth(const Coord& xyz) + { + assert(mRoot); + return mRoot->getValueDepthAndCache(xyz, *mParent); + } + bool isValueOn(const Coord& xyz) + { + assert(mRoot); + return mRoot->isValueOnAndCache(xyz, *mParent); + } + + bool probeValue(const Coord& xyz, ValueType& value) + { + assert(mRoot); + return mRoot->probeValueAndCache(xyz, value, *mParent); + } + bool isVoxel(const Coord& xyz) + { + assert(mRoot); + return mRoot->getValueDepthAndCache(xyz, *mParent) == + static_cast(RootNodeType::LEVEL); + } + const ValueType& getValue(const Coord& xyz) + { + assert(mRoot); + return mRoot->getValueAndCache(xyz, *mParent); + } + + void setValue(const Coord& xyz, const ValueType& value) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->setValueAndCache(xyz, value, *mParent); + } + void setValueOnly(const Coord& xyz, const ValueType& value) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->setValueOnlyAndCache(xyz, value, *mParent); + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->modifyValueAndCache(xyz, op, *mParent); + } + + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->modifyValueAndActiveStateAndCache(xyz, op, *mParent); + } + + void setValueOff(const Coord& xyz, const ValueType& value) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->setValueOffAndCache(xyz, value, *mParent); + } + + void setActiveState(const Coord& xyz, bool on) + { + assert(mRoot); + static_assert(!TreeCacheT::IsConstTree, "can't modify a const tree's values"); + const_cast(mRoot)->setActiveStateAndCache(xyz, on, *mParent); + } + +private: + CacheItem(const CacheItem&); + CacheItem& operator=(const CacheItem&); + + bool isHashed(const Coord&) const { return false; } + + TreeCacheT* mParent; + const RootNodeType* mRoot; +};// end of CacheItem specialized for RootNode + + +//////////////////////////////////////// + + +/// @brief ValueAccessor with no mutex and no node caching. +/// @details This specialization is provided mainly for benchmarking. +/// Accessors with caching will almost always be faster. +template +class ValueAccessor0: public ValueAccessorBase<_TreeType, IsSafe> +{ +public: + using TreeType = _TreeType; + using ValueType = typename TreeType::ValueType; + using RootNodeT = typename TreeType::RootNodeType; + using LeafNodeT = typename TreeType::LeafNodeType; + using BaseT = ValueAccessorBase; + + ValueAccessor0(TreeType& tree): BaseT(tree) {} + + ValueAccessor0(const ValueAccessor0& other): BaseT(other) {} + + /// Return the number of cache levels employed by this accessor. + static Index numCacheLevels() { return 0; } + + ValueAccessor0& operator=(const ValueAccessor0& other) + { + if (&other != this) this->BaseT::operator=(other); + return *this; + } + + ~ValueAccessor0() override = default; + + /// Return @c true if nodes along the path to the given voxel have been cached. + bool isCached(const Coord&) const { return false; } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const + { + assert(BaseT::mTree); + return BaseT::mTree->getValue(xyz); + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) const + { + assert(BaseT::mTree); + return BaseT::mTree->isValueOn(xyz); + } + + /// Return the active state and, in @a value, the value of the voxel at the given coordinates. + bool probeValue(const Coord& xyz, ValueType& value) const + { + assert(BaseT::mTree); + return BaseT::mTree->probeValue(xyz, value); + } + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides, + /// or -1 if (x, y, z) isn't explicitly represented in the tree (i.e., if it is + /// implicitly a background voxel). + int getValueDepth(const Coord& xyz) const + { + assert(BaseT::mTree); + return BaseT::mTree->getValueDepth(xyz); + } + + /// Return @c true if the value of voxel (x, y, z) resides at the leaf level + /// of the tree, i.e., if it is not a tile value. + bool isVoxel(const Coord& xyz) const + { + assert(BaseT::mTree); + return BaseT::mTree->getValueDepth(xyz) == static_cast(RootNodeT::LEVEL); + } + + //@{ + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->setValue(xyz, value); + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + //@} + + /// Set the value of the voxel at the given coordinate but don't change its active state. + void setValueOnly(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->setValueOnly(xyz, value); + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->root().setValueOff(xyz, value); + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->modifyValue(xyz, op); + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->modifyValueAndActiveState(xyz, op); + } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on = true) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + BaseT::mTree->setActiveState(xyz, on); + } + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz) { this->setActiveState(xyz, true); } + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz) { this->setActiveState(xyz, false); } + + /// Return the cached node of type @a NodeType. [Mainly for internal use] + template NodeT* getNode() { return nullptr; } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). [Mainly for internal use] + template void insertNode(const Coord&, NodeT&) {} + + /// @brief Add the specified leaf to this tree, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeT* leaf) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a node to a const tree"); + BaseT::mTree->root().addLeaf(leaf); + } + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly deleting existing nodes or creating new nodes in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a tile to a const tree"); + BaseT::mTree->root().addTile(level, xyz, value, state); + } + + /// If a node of the given type exists in the cache, remove it, so that + /// isCached(xyz) returns @c false for any voxel (x, y, z) contained in + /// that node. [Mainly for internal use] + template void eraseNode() {} + + LeafNodeT* touchLeaf(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + return BaseT::mTree->touchLeaf(xyz); + } + + template + NodeT* probeNode(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + return BaseT::mTree->template probeNode(xyz); + } + + template + const NodeT* probeConstNode(const Coord& xyz) const + { + assert(BaseT::mTree); + return BaseT::mTree->template probeConstNode(xyz); + } + + LeafNodeT* probeLeaf(const Coord& xyz) + { + return this->template probeNode(xyz); + } + + const LeafNodeT* probeConstLeaf(const Coord& xyz) const + { + return this->template probeConstNode(xyz); + } + + const LeafNodeT* probeLeaf(const Coord& xyz) const + { + return this->probeConstLeaf(xyz); + } + + /// Remove all nodes from this cache, then reinsert the root node. + void clear() override {} + +private: + // Allow trees to deregister themselves. + template friend class Tree; + + /// Prevent this accessor from calling Tree::releaseCache() on a tree that + /// no longer exists. (Called by mTree when it is destroyed.) + void release() override { this->BaseT::release(); } + +}; // ValueAccessor0 + + +/// @brief Value accessor with one level of node caching. +/// @details The node cache level is specified by L0 with the default value 0 +/// (defined in the forward declaration) corresponding to a LeafNode. +/// +/// @note This class is for experts only and should rarely be used +/// directly. Instead use ValueAccessor with its default template arguments. +template +class ValueAccessor1 : public ValueAccessorBase<_TreeType, IsSafe> +{ +public: + static_assert(_TreeType::DEPTH >= 2, "cache size exceeds tree depth"); + static_assert(L0 < _TreeType::RootNodeType::LEVEL, "invalid cache level"); + using TreeType = _TreeType; + using ValueType = typename TreeType::ValueType; + using RootNodeT = typename TreeType::RootNodeType; + using LeafNodeT = typename TreeType::LeafNodeType; + using BaseT = ValueAccessorBase; + using InvTreeT = typename RootNodeT::NodeChainType; + using NodeT0 = typename boost::mpl::at >::type; + + /// Constructor from a tree + ValueAccessor1(TreeType& tree) : BaseT(tree), mKey0(Coord::max()), mNode0(nullptr) + { + } + + /// Copy constructor + ValueAccessor1(const ValueAccessor1& other) : BaseT(other) { this->copy(other); } + + /// Return the number of cache levels employed by this ValueAccessor + static Index numCacheLevels() { return 1; } + + /// Asignment operator + ValueAccessor1& operator=(const ValueAccessor1& other) + { + if (&other != this) { + this->BaseT::operator=(other); + this->copy(other); + } + return *this; + } + + /// Virtual destructor + ~ValueAccessor1() override = default; + + /// Return @c true if any of the nodes along the path to the given + /// voxel have been cached. + bool isCached(const Coord& xyz) const + { + assert(BaseT::mTree); + return this->isHashed(xyz); + } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed(xyz)) { + assert(mNode0); + return mNode0->getValueAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed(xyz)) { + assert(mNode0); + return mNode0->isValueOnAndCache(xyz, this->self()); + } + return BaseT::mTree->root().isValueOnAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel as well as its value + bool probeValue(const Coord& xyz, ValueType& value) const + { + assert(BaseT::mTree); + if (this->isHashed(xyz)) { + assert(mNode0); + return mNode0->probeValueAndCache(xyz, value, this->self()); + } + return BaseT::mTree->root().probeValueAndCache(xyz, value, this->self()); + } + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides, + /// or -1 if (x, y, z) isn't explicitly represented in the tree (i.e., if it is + /// implicitly a background voxel). + int getValueDepth(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed(xyz)) { + assert(mNode0); + return RootNodeT::LEVEL - mNode0->getValueLevelAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()); + } + + /// Return @c true if the value of voxel (x, y, z) resides at the leaf level + /// of the tree, i.e., if it is not a tile value. + bool isVoxel(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed(xyz)) { + assert(mNode0); + return mNode0->getValueLevelAndCache(xyz, this->self()) == 0; + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()) == + static_cast(RootNodeT::LEVEL); + } + + //@{ + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueAndCache(xyz, value, *this); + } + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + //@} + + /// Set the value of the voxel at the given coordinate but preserves its active state. + void setValueOnly(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOnlyAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOnlyAndCache(xyz, value, *this); + } + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOffAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOffAndCache(xyz, value, *this); + } + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndCache(xyz, op, *this); + } + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndActiveStateAndCache(xyz, op, *this); + } + } + + /// Set the active state of the voxel at the given coordinates but don't change its value. + void setActiveState(const Coord& xyz, bool on = true) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed(xyz)) { + assert(mNode0); + const_cast(mNode0)->setActiveStateAndCache(xyz, on, *this); + } else { + BaseT::mTree->root().setActiveStateAndCache(xyz, on, *this); + } + } + /// Mark the voxel at the given coordinates as active but don't change its value. + void setValueOn(const Coord& xyz) { this->setActiveState(xyz, true); } + /// Mark the voxel at the given coordinates as inactive but don't change its value. + void setValueOff(const Coord& xyz) { this->setActiveState(xyz, false); } + + /// Return the cached node of type @a NodeType. [Mainly for internal use] + template + NodeT* getNode() + { + const NodeT* node = nullptr; + this->getNode(node); + return const_cast(node); + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). [Mainly for internal use] + template + void insertNode(const Coord& xyz, NodeT& node) { this->insert(xyz, &node); } + + /// If a node of the given type exists in the cache, remove it, so that + /// isCached(xyz) returns @c false for any voxel (x, y, z) contained in + /// that node. [Mainly for internal use] + template + void eraseNode() + { + const NodeT* node = nullptr; + this->eraseNode(node); + } + + /// @brief Add the specified leaf to this tree, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeT* leaf) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a node to a const tree"); + BaseT::mTree->root().addLeaf(leaf); + } + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly deleting existing nodes or creating new nodes in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a tile to a const tree"); + BaseT::mTree->root().addTile(level, xyz, value, state); + } + + /// @brief @return the leaf node that contains voxel (x, y, z) and + /// if it doesn't exist, create it, but preserve the values and + /// active states of all voxels. + /// + /// Use this method to preallocate a static tree topology over which to + /// safely perform multithreaded processing. + LeafNodeT* touchLeaf(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + if (this->isHashed(xyz)) { + assert(mNode0); + return const_cast(mNode0)->touchLeafAndCache(xyz, *this); + } + return BaseT::mTree->root().touchLeafAndCache(xyz, *this); + } + + /// @brief @return a pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + NodeT* probeNode(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed(xyz)) { + assert(mNode0); + return reinterpret_cast(const_cast(mNode0)); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + LeafNodeT* probeLeaf(const Coord& xyz) + { + return this->template probeNode(xyz); + } + + /// @brief @return a const pointer to the nodeof the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + const NodeT* probeConstNode(const Coord& xyz) const + { + assert(BaseT::mTree); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed(xyz)) { + assert(mNode0); + return reinterpret_cast(mNode0); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + const LeafNodeT* probeConstLeaf(const Coord& xyz) const + { + return this->template probeConstNode(xyz); + } + const LeafNodeT* probeLeaf(const Coord& xyz) const { return this->probeConstLeaf(xyz); } + + /// Remove all the cached nodes and invalidate the corresponding hash-keys. + void clear() override + { + mKey0 = Coord::max(); + mNode0 = nullptr; + } + +private: + // Allow nodes to insert themselves into the cache. + template friend class RootNode; + template friend class InternalNode; + template friend class LeafNode; + // Allow trees to deregister themselves. + template friend class Tree; + + // This private method is merely for convenience. + inline ValueAccessor1& self() const { return const_cast(*this); } + + void getNode(const NodeT0*& node) { node = mNode0; } + void getNode(const RootNodeT*& node) + { + node = (BaseT::mTree ? &BaseT::mTree->root() : nullptr); + } + template void getNode(const OtherNodeType*& node) { node = nullptr; } + void eraseNode(const NodeT0*) { mKey0 = Coord::max(); mNode0 = nullptr; } + template void eraseNode(const OtherNodeType*) {} + + /// Private copy method + inline void copy(const ValueAccessor1& other) + { + mKey0 = other.mKey0; + mNode0 = other.mNode0; + } + + /// Prevent this accessor from calling Tree::releaseCache() on a tree that + /// no longer exists. (Called by mTree when it is destroyed.) + void release() override + { + this->BaseT::release(); + this->clear(); + } + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). + /// @note This operation is not mutex-protected and is intended to be called + /// only by nodes and only in the context of a getValue() or setValue() call. + inline void insert(const Coord& xyz, const NodeT0* node) + { + assert(node); + mKey0 = xyz & ~(NodeT0::DIM-1); + mNode0 = node; + } + + /// No-op in case a tree traversal attemps to insert a node that + /// is not cached by the ValueAccessor + template inline void insert(const Coord&, const OtherNodeType*) {} + + inline bool isHashed(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[0] + && (xyz[1] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[1] + && (xyz[2] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[2]; + } + mutable Coord mKey0; + mutable const NodeT0* mNode0; +}; // ValueAccessor1 + + +/// @brief Value accessor with two levels of node caching. +/// @details The node cache levels are specified by L0 and L1 +/// with the default values 0 and 1 (defined in the forward declaration) +/// corresponding to a LeafNode and its parent InternalNode. +/// +/// @note This class is for experts only and should rarely be used directly. +/// Instead use ValueAccessor with its default template arguments. +template +class ValueAccessor2 : public ValueAccessorBase<_TreeType, IsSafe> +{ +public: + static_assert(_TreeType::DEPTH >= 3, "cache size exceeds tree depth"); + static_assert(L0 < L1, "invalid cache level"); + static_assert(L1 < _TreeType::RootNodeType::LEVEL, "invalid cache level"); + + using TreeType = _TreeType; + using ValueType = typename TreeType::ValueType; + using RootNodeT = typename TreeType::RootNodeType; + using LeafNodeT = typename TreeType::LeafNodeType; + using BaseT = ValueAccessorBase; + using InvTreeT = typename RootNodeT::NodeChainType; + using NodeT0 = typename boost::mpl::at>::type; + using NodeT1 = typename boost::mpl::at>::type; + + /// Constructor from a tree + ValueAccessor2(TreeType& tree) : BaseT(tree), + mKey0(Coord::max()), mNode0(nullptr), + mKey1(Coord::max()), mNode1(nullptr) {} + + /// Copy constructor + ValueAccessor2(const ValueAccessor2& other) : BaseT(other) { this->copy(other); } + + /// Return the number of cache levels employed by this ValueAccessor + static Index numCacheLevels() { return 2; } + + /// Asignment operator + ValueAccessor2& operator=(const ValueAccessor2& other) + { + if (&other != this) { + this->BaseT::operator=(other); + this->copy(other); + } + return *this; + } + + /// Virtual destructor + ~ValueAccessor2() override = default; + + /// Return @c true if any of the nodes along the path to the given + /// voxel have been cached. + bool isCached(const Coord& xyz) const + { + assert(BaseT::mTree); + return this->isHashed1(xyz) || this->isHashed0(xyz); + } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->getValueAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->getValueAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->isValueOnAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->isValueOnAndCache(xyz, this->self()); + } + return BaseT::mTree->root().isValueOnAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel as well as its value + bool probeValue(const Coord& xyz, ValueType& value) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->probeValueAndCache(xyz, value, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->probeValueAndCache(xyz, value, this->self()); + } + return BaseT::mTree->root().probeValueAndCache(xyz, value, this->self()); + } + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides, + /// or -1 if (x, y, z) isn't explicitly represented in the tree (i.e., if it is + /// implicitly a background voxel). + int getValueDepth(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return RootNodeT::LEVEL - mNode0->getValueLevelAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return RootNodeT::LEVEL - mNode1->getValueLevelAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()); + } + + /// Return @c true if the value of voxel (x, y, z) resides at the leaf level + /// of the tree, i.e., if it is not a tile value. + bool isVoxel(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->getValueLevelAndCache(xyz, this->self())==0; + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->getValueLevelAndCache(xyz, this->self())==0; + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()) == + static_cast(RootNodeT::LEVEL); + } + + //@{ + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueAndCache(xyz, value, *this); + } + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + //@} + + /// Set the value of the voxel at the given coordinate but preserves its active state. + void setValueOnly(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOnlyAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueOnlyAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOnlyAndCache(xyz, value, *this); + } + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOffAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueOffAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOffAndCache(xyz, value, *this); + } + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndCache(xyz, op, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->modifyValueAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndCache(xyz, op, *this); + } + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndActiveStateAndCache(xyz, op, *this); + } + } + + /// Set the active state of the voxel at the given coordinates without changing its value. + void setActiveState(const Coord& xyz, bool on = true) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setActiveStateAndCache(xyz, on, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setActiveStateAndCache(xyz, on, *this); + } else { + BaseT::mTree->root().setActiveStateAndCache(xyz, on, *this); + } + } + /// Mark the voxel at the given coordinates as active without changing its value. + void setValueOn(const Coord& xyz) { this->setActiveState(xyz, true); } + /// Mark the voxel at the given coordinates as inactive without changing its value. + void setValueOff(const Coord& xyz) { this->setActiveState(xyz, false); } + + /// Return the cached node of type @a NodeType. [Mainly for internal use] + template + NodeT* getNode() + { + const NodeT* node = nullptr; + this->getNode(node); + return const_cast(node); + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). [Mainly for internal use] + template + void insertNode(const Coord& xyz, NodeT& node) { this->insert(xyz, &node); } + + /// If a node of the given type exists in the cache, remove it, so that + /// isCached(xyz) returns @c false for any voxel (x, y, z) contained in + /// that node. [Mainly for internal use] + template + void eraseNode() + { + const NodeT* node = nullptr; + this->eraseNode(node); + } + + /// @brief Add the specified leaf to this tree, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeT* leaf) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a node to a const tree"); + if (this->isHashed1(leaf->origin())) { + assert(mNode1); + return const_cast(mNode1)->addLeafAndCache(leaf, *this); + } + BaseT::mTree->root().addLeafAndCache(leaf, *this); + } + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly deleting existing nodes or creating new nodes in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a tile to a const tree"); + if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->addTileAndCache(level, xyz, value, state, *this); + } + BaseT::mTree->root().addTileAndCache(level, xyz, value, state, *this); + } + + /// @brief @return the leaf node that contains voxel (x, y, z) and + /// if it doesn't exist, create it, but preserve the values and + /// active states of all voxels. + /// + /// Use this method to preallocate a static tree topology over which to + /// safely perform multithreaded processing. + LeafNodeT* touchLeaf(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + if (this->isHashed0(xyz)) { + assert(mNode0); + return const_cast(mNode0)->touchLeafAndCache(xyz, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->touchLeafAndCache(xyz, *this); + } + return BaseT::mTree->root().touchLeafAndCache(xyz, *this); + } + /// @brief @return a pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + NodeT* probeNode(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed0(xyz)) { + assert(mNode0); + return reinterpret_cast(const_cast(mNode0)); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->template probeNodeAndCache(xyz, *this); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } else if ((std::is_same::value)) { + if (this->isHashed1(xyz)) { + assert(mNode1); + return reinterpret_cast(const_cast(mNode1)); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + /// @brief @return a pointer to the leaf node that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + LeafNodeT* probeLeaf(const Coord& xyz) { return this->template probeNode(xyz); } + + /// @brief @return a const pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + const NodeT* probeConstLeaf(const Coord& xyz) const + { + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed0(xyz)) { + assert(mNode0); + return reinterpret_cast(mNode0); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->template probeConstNodeAndCache(xyz, this->self()); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } else if ((std::is_same::value)) { + if (this->isHashed1(xyz)) { + assert(mNode1); + return reinterpret_cast(mNode1); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + /// @brief @return a const pointer to the leaf node that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + const LeafNodeT* probeConstLeaf(const Coord& xyz) const + { + return this->template probeConstNode(xyz); + } + const LeafNodeT* probeLeaf(const Coord& xyz) const { return this->probeConstLeaf(xyz); } + + /// @brief @return a const pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + const NodeT* probeConstNode(const Coord& xyz) const + { + assert(BaseT::mTree); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed0(xyz)) { + assert(mNode0); + return reinterpret_cast(mNode0); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->template probeConstNodeAndCache(xyz, this->self()); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } else if ((std::is_same::value)) { + if (this->isHashed1(xyz)) { + assert(mNode1); + return reinterpret_cast(mNode1); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + + /// Remove all the cached nodes and invalidate the corresponding hash-keys. + void clear() override + { + mKey0 = Coord::max(); + mNode0 = nullptr; + mKey1 = Coord::max(); + mNode1 = nullptr; + } + +private: + // Allow nodes to insert themselves into the cache. + template friend class RootNode; + template friend class InternalNode; + template friend class LeafNode; + // Allow trees to deregister themselves. + template friend class Tree; + + // This private method is merely for convenience. + inline ValueAccessor2& self() const { return const_cast(*this); } + + void getNode(const NodeT0*& node) { node = mNode0; } + void getNode(const NodeT1*& node) { node = mNode1; } + void getNode(const RootNodeT*& node) + { + node = (BaseT::mTree ? &BaseT::mTree->root() : nullptr); + } + template void getNode(const OtherNodeType*& node) { node = nullptr; } + + void eraseNode(const NodeT0*) { mKey0 = Coord::max(); mNode0 = nullptr; } + void eraseNode(const NodeT1*) { mKey1 = Coord::max(); mNode1 = nullptr; } + template void eraseNode(const OtherNodeType*) {} + + /// Private copy method + inline void copy(const ValueAccessor2& other) + { + mKey0 = other.mKey0; + mNode0 = other.mNode0; + mKey1 = other.mKey1; + mNode1 = other.mNode1; + } + + /// Prevent this accessor from calling Tree::releaseCache() on a tree that + /// no longer exists. (Called by mTree when it is destroyed.) + void release() override + { + this->BaseT::release(); + this->clear(); + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). + /// @note This operation is not mutex-protected and is intended to be called + /// only by nodes and only in the context of a getValue() or setValue() call. + inline void insert(const Coord& xyz, const NodeT0* node) + { + assert(node); + mKey0 = xyz & ~(NodeT0::DIM-1); + mNode0 = node; + } + inline void insert(const Coord& xyz, const NodeT1* node) + { + assert(node); + mKey1 = xyz & ~(NodeT1::DIM-1); + mNode1 = node; + } + /// No-op in case a tree traversal attemps to insert a node that + /// is not cached by the ValueAccessor + template inline void insert(const Coord&, const NodeT*) {} + + inline bool isHashed0(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[0] + && (xyz[1] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[1] + && (xyz[2] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[2]; + } + inline bool isHashed1(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[0] + && (xyz[1] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[1] + && (xyz[2] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[2]; + } + mutable Coord mKey0; + mutable const NodeT0* mNode0; + mutable Coord mKey1; + mutable const NodeT1* mNode1; +}; // ValueAccessor2 + + +/// @brief Value accessor with three levels of node caching. +/// @details The node cache levels are specified by L0, L1, and L2 +/// with the default values 0, 1 and 2 (defined in the forward declaration) +/// corresponding to a LeafNode, its parent InternalNode, and its parent InternalNode. +/// Since the default configuration of all typed trees and grids, e.g., +/// FloatTree or FloatGrid, has a depth of four, this value accessor is the one +/// used by default. +/// +/// @note This class is for experts only and should rarely be used +/// directly. Instead use ValueAccessor with its default template arguments +template +class ValueAccessor3 : public ValueAccessorBase<_TreeType, IsSafe> +{ +public: + static_assert(_TreeType::DEPTH >= 4, "cache size exceeds tree depth"); + static_assert(L0 < L1, "invalid cache level"); + static_assert(L1 < L2, "invalid cache level"); + static_assert(L2 < _TreeType::RootNodeType::LEVEL, "invalid cache level"); + + using TreeType = _TreeType; + using ValueType = typename TreeType::ValueType; + using RootNodeT = typename TreeType::RootNodeType; + using LeafNodeT = typename TreeType::LeafNodeType; + using BaseT = ValueAccessorBase; + using InvTreeT = typename RootNodeT::NodeChainType; + using NodeT0 = typename boost::mpl::at >::type; + using NodeT1 = typename boost::mpl::at >::type; + using NodeT2 = typename boost::mpl::at >::type; + + /// Constructor from a tree + ValueAccessor3(TreeType& tree) : BaseT(tree), + mKey0(Coord::max()), mNode0(nullptr), + mKey1(Coord::max()), mNode1(nullptr), + mKey2(Coord::max()), mNode2(nullptr) {} + + /// Copy constructor + ValueAccessor3(const ValueAccessor3& other) : BaseT(other) { this->copy(other); } + + /// Asignment operator + ValueAccessor3& operator=(const ValueAccessor3& other) + { + if (&other != this) { + this->BaseT::operator=(other); + this->copy(other); + } + return *this; + } + + /// Return the number of cache levels employed by this ValueAccessor + static Index numCacheLevels() { return 3; } + + /// Virtual destructor + ~ValueAccessor3() override = default; + + /// Return @c true if any of the nodes along the path to the given + /// voxel have been cached. + bool isCached(const Coord& xyz) const + { + assert(BaseT::mTree); + return this->isHashed2(xyz) || this->isHashed1(xyz) || this->isHashed0(xyz); + } + + /// Return the value of the voxel at the given coordinates. + const ValueType& getValue(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->getValueAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->getValueAndCache(xyz, this->self()); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->getValueAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel at the given coordinates. + bool isValueOn(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->isValueOnAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->isValueOnAndCache(xyz, this->self()); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->isValueOnAndCache(xyz, this->self()); + } + return BaseT::mTree->root().isValueOnAndCache(xyz, this->self()); + } + + /// Return the active state of the voxel as well as its value + bool probeValue(const Coord& xyz, ValueType& value) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->probeValueAndCache(xyz, value, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->probeValueAndCache(xyz, value, this->self()); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->probeValueAndCache(xyz, value, this->self()); + } + return BaseT::mTree->root().probeValueAndCache(xyz, value, this->self()); + } + + /// Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides, + /// or -1 if (x, y, z) isn't explicitly represented in the tree (i.e., if it is + /// implicitly a background voxel). + int getValueDepth(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return RootNodeT::LEVEL - mNode0->getValueLevelAndCache(xyz, this->self()); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return RootNodeT::LEVEL - mNode1->getValueLevelAndCache(xyz, this->self()); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return RootNodeT::LEVEL - mNode2->getValueLevelAndCache(xyz, this->self()); + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()); + } + + /// Return @c true if the value of voxel (x, y, z) resides at the leaf level + /// of the tree, i.e., if it is not a tile value. + bool isVoxel(const Coord& xyz) const + { + assert(BaseT::mTree); + if (this->isHashed0(xyz)) { + assert(mNode0); + return mNode0->getValueLevelAndCache(xyz, this->self())==0; + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->getValueLevelAndCache(xyz, this->self())==0; + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->getValueLevelAndCache(xyz, this->self())==0; + } + return BaseT::mTree->root().getValueDepthAndCache(xyz, this->self()) == + static_cast(RootNodeT::LEVEL); + } + + //@{ + /// Set the value of the voxel at the given coordinates and mark the voxel as active. + void setValue(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueAndCache(xyz, value, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->setValueAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueAndCache(xyz, value, *this); + } + } + void setValueOn(const Coord& xyz, const ValueType& value) { this->setValue(xyz, value); } + //@} + + /// Set the value of the voxel at the given coordinate but preserves its active state. + void setValueOnly(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOnlyAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueOnlyAndCache(xyz, value, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->setValueOnlyAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOnlyAndCache(xyz, value, *this); + } + } + + /// Set the value of the voxel at the given coordinates and mark the voxel as inactive. + void setValueOff(const Coord& xyz, const ValueType& value) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setValueOffAndCache(xyz, value, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setValueOffAndCache(xyz, value, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->setValueOffAndCache(xyz, value, *this); + } else { + BaseT::mTree->root().setValueOffAndCache(xyz, value, *this); + } + } + + /// @brief Apply a functor to the value of the voxel at the given coordinates + /// and mark the voxel as active. + /// @details See Tree::modifyValue() for details. + template + void modifyValue(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndCache(xyz, op, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->modifyValueAndCache(xyz, op, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->modifyValueAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndCache(xyz, op, *this); + } + } + + /// @brief Apply a functor to the voxel at the given coordinates. + /// @details See Tree::modifyValueAndActiveState() for details. + template + void modifyValueAndActiveState(const Coord& xyz, const ModifyOp& op) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->modifyValueAndActiveStateAndCache(xyz, op, *this); + } else { + BaseT::mTree->root().modifyValueAndActiveStateAndCache(xyz, op, *this); + } + } + + /// Set the active state of the voxel at the given coordinates without changing its value. + void setActiveState(const Coord& xyz, bool on = true) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't modify a const tree's values"); + if (this->isHashed0(xyz)) { + assert(mNode0); + const_cast(mNode0)->setActiveStateAndCache(xyz, on, *this); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + const_cast(mNode1)->setActiveStateAndCache(xyz, on, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + const_cast(mNode2)->setActiveStateAndCache(xyz, on, *this); + } else { + BaseT::mTree->root().setActiveStateAndCache(xyz, on, *this); + } + } + /// Mark the voxel at the given coordinates as active without changing its value. + void setValueOn(const Coord& xyz) { this->setActiveState(xyz, true); } + /// Mark the voxel at the given coordinates as inactive without changing its value. + void setValueOff(const Coord& xyz) { this->setActiveState(xyz, false); } + + /// Return the cached node of type @a NodeType. [Mainly for internal use] + template + NodeT* getNode() + { + const NodeT* node = nullptr; + this->getNode(node); + return const_cast(node); + } + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). [Mainly for internal use] + template + void insertNode(const Coord& xyz, NodeT& node) { this->insert(xyz, &node); } + + /// If a node of the given type exists in the cache, remove it, so that + /// isCached(xyz) returns @c false for any voxel (x, y, z) contained in + /// that node. [Mainly for internal use] + template + void eraseNode() + { + const NodeT* node = nullptr; + this->eraseNode(node); + } + + /// @brief Add the specified leaf to this tree, possibly creating a child branch + /// in the process. If the leaf node already exists, replace it. + void addLeaf(LeafNodeT* leaf) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a node to a const tree"); + if (this->isHashed1(leaf->origin())) { + assert(mNode1); + return const_cast(mNode1)->addLeafAndCache(leaf, *this); + } else if (this->isHashed2(leaf->origin())) { + assert(mNode2); + return const_cast(mNode2)->addLeafAndCache(leaf, *this); + } + BaseT::mTree->root().addLeafAndCache(leaf, *this); + } + + /// @brief Add a tile at the specified tree level that contains voxel (x, y, z), + /// possibly deleting existing nodes or creating new nodes in the process. + void addTile(Index level, const Coord& xyz, const ValueType& value, bool state) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't add a tile to a const tree"); + if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->addTileAndCache(level, xyz, value, state, *this); + } if (this->isHashed2(xyz)) { + assert(mNode2); + return const_cast(mNode2)->addTileAndCache(level, xyz, value, state, *this); + } + BaseT::mTree->root().addTileAndCache(level, xyz, value, state, *this); + } + + /// @brief @return the leaf node that contains voxel (x, y, z) and + /// if it doesn't exist, create it, but preserve the values and + /// active states of all voxels. + /// + /// Use this method to preallocate a static tree topology over which to + /// safely perform multithreaded processing. + LeafNodeT* touchLeaf(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + if (this->isHashed0(xyz)) { + assert(mNode0); + return const_cast(mNode0); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->touchLeafAndCache(xyz, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return const_cast(mNode2)->touchLeafAndCache(xyz, *this); + } + return BaseT::mTree->root().touchLeafAndCache(xyz, *this); + } + /// @brief @return a pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + NodeT* probeNode(const Coord& xyz) + { + assert(BaseT::mTree); + static_assert(!BaseT::IsConstTree, "can't get a non-const node from a const tree"); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed0(xyz)) { + assert(mNode0); + return reinterpret_cast(const_cast(mNode0)); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return const_cast(mNode1)->template probeNodeAndCache(xyz, *this); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return const_cast(mNode2)->template probeNodeAndCache(xyz, *this); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } else if ((std::is_same::value)) { + if (this->isHashed1(xyz)) { + assert(mNode1); + return reinterpret_cast(const_cast(mNode1)); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return const_cast(mNode2)->template probeNodeAndCache(xyz, *this); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } else if ((std::is_same::value)) { + if (this->isHashed2(xyz)) { + assert(mNode2); + return reinterpret_cast(const_cast(mNode2)); + } + return BaseT::mTree->root().template probeNodeAndCache(xyz, *this); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + /// @brief @return a pointer to the leaf node that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + LeafNodeT* probeLeaf(const Coord& xyz) { return this->template probeNode(xyz); } + + /// @brief @return a const pointer to the node of the specified type that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + template + const NodeT* probeConstNode(const Coord& xyz) const + { + assert(BaseT::mTree); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if ((std::is_same::value)) { + if (this->isHashed0(xyz)) { + assert(mNode0); + return reinterpret_cast(mNode0); + } else if (this->isHashed1(xyz)) { + assert(mNode1); + return mNode1->template probeConstNodeAndCache(xyz, this->self()); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->template probeConstNodeAndCache(xyz, this->self()); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } else if ((std::is_same::value)) { + if (this->isHashed1(xyz)) { + assert(mNode1); + return reinterpret_cast(mNode1); + } else if (this->isHashed2(xyz)) { + assert(mNode2); + return mNode2->template probeConstNodeAndCache(xyz, this->self()); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } else if ((std::is_same::value)) { + if (this->isHashed2(xyz)) { + assert(mNode2); + return reinterpret_cast(mNode2); + } + return BaseT::mTree->root().template probeConstNodeAndCache(xyz, this->self()); + } + return nullptr; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + } + /// @brief @return a const pointer to the leaf node that contains + /// voxel (x, y, z) and if it doesn't exist, return @c nullptr. + const LeafNodeT* probeConstLeaf(const Coord& xyz) const + { + return this->template probeConstNode(xyz); + } + const LeafNodeT* probeLeaf(const Coord& xyz) const { return this->probeConstLeaf(xyz); } + + /// Remove all the cached nodes and invalidate the corresponding hash-keys. + void clear() override + { + mKey0 = Coord::max(); + mNode0 = nullptr; + mKey1 = Coord::max(); + mNode1 = nullptr; + mKey2 = Coord::max(); + mNode2 = nullptr; + } + +private: + // Allow nodes to insert themselves into the cache. + template friend class RootNode; + template friend class InternalNode; + template friend class LeafNode; + // Allow trees to deregister themselves. + template friend class Tree; + + // This private method is merely for convenience. + inline ValueAccessor3& self() const { return const_cast(*this); } + + /// Private copy method + inline void copy(const ValueAccessor3& other) + { + mKey0 = other.mKey0; + mNode0 = other.mNode0; + mKey1 = other.mKey1; + mNode1 = other.mNode1; + mKey2 = other.mKey2; + mNode2 = other.mNode2; + } + + /// Prevent this accessor from calling Tree::releaseCache() on a tree that + /// no longer exists. (Called by mTree when it is destroyed.) + void release() override + { + this->BaseT::release(); + this->clear(); + } + void getNode(const NodeT0*& node) { node = mNode0; } + void getNode(const NodeT1*& node) { node = mNode1; } + void getNode(const NodeT2*& node) { node = mNode2; } + void getNode(const RootNodeT*& node) + { + node = (BaseT::mTree ? &BaseT::mTree->root() : nullptr); + } + template void getNode(const OtherNodeType*& node) { node = nullptr; } + + void eraseNode(const NodeT0*) { mKey0 = Coord::max(); mNode0 = nullptr; } + void eraseNode(const NodeT1*) { mKey1 = Coord::max(); mNode1 = nullptr; } + void eraseNode(const NodeT2*) { mKey2 = Coord::max(); mNode2 = nullptr; } + template void eraseNode(const OtherNodeType*) {} + + /// Cache the given node, which should lie along the path from the root node to + /// the node containing voxel (x, y, z). + /// @note This operation is not mutex-protected and is intended to be called + /// only by nodes and only in the context of a getValue() or setValue() call. + inline void insert(const Coord& xyz, const NodeT0* node) + { + assert(node); + mKey0 = xyz & ~(NodeT0::DIM-1); + mNode0 = node; + } + inline void insert(const Coord& xyz, const NodeT1* node) + { + assert(node); + mKey1 = xyz & ~(NodeT1::DIM-1); + mNode1 = node; + } + inline void insert(const Coord& xyz, const NodeT2* node) + { + assert(node); + mKey2 = xyz & ~(NodeT2::DIM-1); + mNode2 = node; + } + /// No-op in case a tree traversal attemps to insert a node that + /// is not cached by the ValueAccessor + template + inline void insert(const Coord&, const OtherNodeType*) + { + } + inline bool isHashed0(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[0] + && (xyz[1] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[1] + && (xyz[2] & ~Coord::ValueType(NodeT0::DIM-1)) == mKey0[2]; + } + inline bool isHashed1(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[0] + && (xyz[1] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[1] + && (xyz[2] & ~Coord::ValueType(NodeT1::DIM-1)) == mKey1[2]; + } + inline bool isHashed2(const Coord& xyz) const + { + return (xyz[0] & ~Coord::ValueType(NodeT2::DIM-1)) == mKey2[0] + && (xyz[1] & ~Coord::ValueType(NodeT2::DIM-1)) == mKey2[1] + && (xyz[2] & ~Coord::ValueType(NodeT2::DIM-1)) == mKey2[2]; + } + mutable Coord mKey0; + mutable const NodeT0* mNode0; + mutable Coord mKey1; + mutable const NodeT1* mNode1; + mutable Coord mKey2; + mutable const NodeT2* mNode2; +}; // ValueAccessor3 + +} // namespace tree +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_TREE_VALUEACCESSOR_HAS_BEEN_INCLUDED diff --git a/openvdb/unittest/CMakeLists.txt b/openvdb/unittest/CMakeLists.txt new file mode 100644 index 00000000..2695492f --- /dev/null +++ b/openvdb/unittest/CMakeLists.txt @@ -0,0 +1,198 @@ +# Copyright Contributors to the OpenVDB Project +# SPDX-License-Identifier: MPL-2.0 +# +#[=======================================================================[ + + CMake Configuration for OpenVDB Unit Tests + +#]=======================================================================] + +project(OpenVDBUnitTests) +cmake_minimum_required(VERSION 3.3) +# Monitoring _ROOT variables +if(POLICY CMP0074) + cmake_policy(SET CMP0074 NEW) +endif() + +########################################################################## + +message(STATUS "----------------------------------------------------") +message(STATUS "----------- Configuring OpenVDBUnitTests -----------") +message(STATUS "----------------------------------------------------") + +########################################################################## + +# Collect lib dependencies + +if(NOT OPENVDB_BUILD_CORE) + set(OPENVDB_LIB OpenVDB::openvdb) +else() + set(OPENVDB_LIB openvdb) +endif() + +find_package(CppUnit ${MINIMUM_CPPUNIT_VERSION} REQUIRED) + +set(OPENVDB_TEST_DEPENDENT_LIBS + ${OPENVDB_LIB} + CppUnit::cppunit +) + +########################################################################## + +if(WIN32 AND OPENVDB_DISABLE_BOOST_IMPLICIT_LINKING) + add_definitions(-DBOOST_ALL_NO_LIB) +endif() + +if(WIN32) + # Because of implicit linking! + link_directories(${Boost_LIBRARY_DIR}) +endif() + +if(WIN32) + add_definitions(-D_WIN32 -DNOMINMAX -DOPENVDB_DLL) +endif() + +##### VDB unit tests + +set(UNITTEST_SOURCE_FILES + main.cc + TestAttributeArray.cc + TestAttributeArrayString.cc + TestAttributeGroup.cc + TestAttributeSet.cc + TestBBox.cc + TestClip.cc + TestConjGradient.cc + TestCoord.cc + TestCpt.cc + TestCurl.cc + TestDelayedLoadMetadata.cc + TestDense.cc + TestDenseSparseTools.cc + TestDiagnostics.cc + TestDivergence.cc + TestDoubleMetadata.cc + TestExceptions.cc + TestFile.cc + TestFindActiveValues.cc + TestFloatMetadata.cc + TestGradient.cc + TestGrid.cc + TestGridBbox.cc + TestGridDescriptor.cc + TestGridIO.cc + TestGridTransformer.cc + TestIndexFilter.cc + TestIndexIterator.cc + TestInit.cc + TestInt32Metadata.cc + TestInt64Metadata.cc + TestInternalOrigin.cc + TestLaplacian.cc + TestLeaf.cc + TestLeafBool.cc + TestLeafIO.cc + TestLeafManager.cc + TestLeafMask.cc + TestLeafOrigin.cc + TestLevelSetRayIntersector.cc + TestLevelSetUtil.cc + TestLinearInterp.cc + TestMaps.cc + TestMat4Metadata.cc + TestMath.cc + TestMeanCurvature.cc + TestMeshToVolume.cc + TestMetadata.cc + TestMetadataIO.cc + TestMetaMap.cc + TestMultiResGrid.cc + TestName.cc + TestNodeIterator.cc + TestNodeManager.cc + TestNodeMask.cc + TestParticleAtlas.cc + TestParticlesToLevelSet.cc + TestPointAdvect.cc + TestPointAttribute.cc + TestPointConversion.cc + TestPointCount.cc + TestPointDataLeaf.cc + TestPointDelete.cc + TestPointGroup.cc + TestPointIndexGrid.cc + TestPointMask.cc + TestPointMove.cc + TestPointPartitioner.cc + TestPointSample.cc + TestPointScatter.cc + TestPointsToMask.cc + TestPoissonSolver.cc + TestPotentialFlow.cc + TestPrePostAPI.cc + TestQuadraticInterp.cc + TestQuantizedUnitVec.cc + TestQuat.cc + TestRay.cc + TestStats.cc + TestStream.cc + TestStreamCompression.cc + TestStringMetadata.cc + TestTools.cc + TestTopologyToLevelSet.cc + TestTransform.cc + TestTree.cc + TestTreeCombine.cc + TestTreeGetSetValues.cc + TestTreeIterators.cc + TestTreeVisitor.cc + TestTypes.cc + TestUtil.cc + TestValueAccessor.cc + TestVec2Metadata.cc + TestVec3Metadata.cc + TestVolumeRayIntersector.cc + TestVolumeToMesh.cc + TestVolumeToSpheres.cc +) + +add_executable(vdb_test ${UNITTEST_SOURCE_FILES}) + +if(USE_BLOSC OR OpenVDB_USES_BLOSC) + # Blosc is a hidden dependency for the core library (not exposed in headers) + # so we need to manually link it in here to provide header access for the + # blosc relevant unit tests + find_package(Blosc ${MINIMUM_BLOSC_VERSION} REQUIRED) + list(APPEND OPENVDB_TEST_DEPENDENT_LIBS Blosc::blosc) + target_compile_definitions(vdb_test PRIVATE "-DOPENVDB_USE_BLOSC") +endif() + +target_link_libraries(vdb_test + ${OPENVDB_TEST_DEPENDENT_LIBS} +) + +if(OPENVDB_ENABLE_RPATH) + set(RPATHS "") + # @todo There is probably a better way to do this for imported targets + list(APPEND RPATHS + ${Boost_LIBRARY_DIRS} + ${IlmBase_LIBRARY_DIRS} + ${Log4cplus_LIBRARY_DIRS} + ${Blosc_LIBRARY_DIRS} + ${Tbb_LIBRARY_DIRS} + ${CppUnit_LIBRARY_DIRS} + ) + if(OPENVDB_BUILD_CORE) + list(APPEND RPATHS ${CMAKE_INSTALL_PREFIX}/lib) + else() + list(APPEND RPATHS ${OpenVDB_LIBRARY_DIRS}) + endif() + + list(REMOVE_DUPLICATES RPATHS) + + set_target_properties(vdb_test + PROPERTIES INSTALL_RPATH "${RPATHS}" + ) +endif() + +add_test(vdb_unit_test vdb_test -v) diff --git a/openvdb/unittest/TestAttributeArray.cc b/openvdb/unittest/TestAttributeArray.cc new file mode 100644 index 00000000..b23c4d71 --- /dev/null +++ b/openvdb/unittest/TestAttributeArray.cc @@ -0,0 +1,2453 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include + +#ifdef __clang__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wunused-macros" +#endif +// Boost.Interprocess uses a header-only portion of Boost.DateTime +#define BOOST_DATE_TIME_NO_LIB +#ifdef __clang__ +#pragma GCC diagnostic pop +#endif +#include +#include +#include +#include + +#include // for std::remove() +#include +#include +#include + +#ifdef _MSC_VER +#include // open_existing_file(), close_file() +// boost::interprocess::detail was renamed to boost::interprocess::ipcdetail in Boost 1.48. +// Ensure that both namespaces exist. +namespace boost { namespace interprocess { namespace detail {} namespace ipcdetail {} } } +#include +#else +#include // for struct stat +#include // for stat() +#endif + + +/// @brief io::MappedFile has a private constructor, so declare a class that acts as the friend +class TestMappedFile +{ +public: + static openvdb::io::MappedFile::Ptr create(const std::string& filename) + { + return openvdb::SharedPtr(new openvdb::io::MappedFile(filename)); + } +}; + + +/// @brief Functionality similar to openvdb::util::CpuTimer except with prefix padding and no decimals. +/// +/// @code +/// ProfileTimer timer("algorithm 1"); +/// // code to be timed goes here +/// timer.stop(); +/// @endcode +class ProfileTimer +{ +public: + /// @brief Prints message and starts timer. + /// + /// @note Should normally be followed by a call to stop() + ProfileTimer(const std::string& msg) + { + (void)msg; +#ifdef PROFILE + // padd string to 50 characters + std::string newMsg(msg); + if (newMsg.size() < 50) newMsg.insert(newMsg.end(), 50 - newMsg.size(), ' '); + std::cerr << newMsg << " ... "; +#endif + mT0 = tbb::tick_count::now(); + } + + ~ProfileTimer() { this->stop(); } + + /// Return Time diference in milliseconds since construction or start was called. + inline double delta() const + { + tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0; + return 1000.0*dt.seconds(); + } + + /// @brief Print time in milliseconds since construction or start was called. + inline void stop() const + { +#ifdef PROFILE + std::stringstream ss; + ss << std::setw(6) << ::round(this->delta()); + std::cerr << "completed in " << ss.str() << " ms\n"; +#endif + } + +private: + tbb::tick_count mT0; +};// ProfileTimer + + +struct ScopedFile +{ + explicit ScopedFile(const std::string& s): pathname(s) {} + ~ScopedFile() { if (!pathname.empty()) std::remove(pathname.c_str()); } + const std::string pathname; +}; + + +using namespace openvdb; +using namespace openvdb::points; + +class TestAttributeArray: public CppUnit::TestCase +{ +public: + void setUp() override { AttributeArray::clearRegistry(); } + void tearDown() override { AttributeArray::clearRegistry(); } + + CPPUNIT_TEST_SUITE(TestAttributeArray); + CPPUNIT_TEST(testFixedPointConversion); + CPPUNIT_TEST(testRegistry); + CPPUNIT_TEST(testAttributeArray); + CPPUNIT_TEST(testAttributeArrayCopy); + CPPUNIT_TEST(testAccessorEval); + CPPUNIT_TEST(testAttributeHandle); + CPPUNIT_TEST(testStrided); + CPPUNIT_TEST(testDelayedLoad); + CPPUNIT_TEST(testQuaternions); + CPPUNIT_TEST(testMatrices); + CPPUNIT_TEST(testProfile); + + CPPUNIT_TEST_SUITE_END(); + + void testFixedPointConversion(); + void testRegistry(); + void testAttributeArray(); + void testAttributeArrayCopy(); + void testAccessorEval(); + void testAttributeHandle(); + void testStrided(); + void testDelayedLoad(); + void testQuaternions(); + void testMatrices(); + void testProfile(); +}; // class TestAttributeArray + +CPPUNIT_TEST_SUITE_REGISTRATION(TestAttributeArray); + + +//////////////////////////////////////// + + +namespace { + +bool +matchingNamePairs(const openvdb::NamePair& lhs, + const openvdb::NamePair& rhs) +{ + if (lhs.first != rhs.first) return false; + if (lhs.second != rhs.second) return false; + + return true; +} + +} // namespace + + +//////////////////////////////////////// + + +void +TestAttributeArray::testFixedPointConversion() +{ + openvdb::math::Transform::Ptr transform(openvdb::math::Transform::createLinearTransform(/*voxelSize=*/0.1)); + + const float value = 33.5688040469035f; + + { + // convert to fixed-point value + + const openvdb::Vec3f worldSpaceValue(value); + const openvdb::Vec3f indexSpaceValue = transform->worldToIndex(worldSpaceValue); + const float voxelSpaceValue = indexSpaceValue.x() - math::Round(indexSpaceValue.x()) + 0.5f; + const uint32_t intValue = floatingPointToFixedPoint(voxelSpaceValue); + + // convert back to floating-point value + + const float newVoxelSpaceValue = fixedPointToFloatingPoint(intValue); + const openvdb::Vec3f newIndexSpaceValue(newVoxelSpaceValue + math::Round(indexSpaceValue.x()) - 0.5f); + const openvdb::Vec3f newWorldSpaceValue = transform->indexToWorld(newIndexSpaceValue); + + const float newValue = newWorldSpaceValue.x(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, newValue, /*tolerance=*/1e-6); + } + + { + // convert to fixed-point value (vector) + + const openvdb::Vec3f worldSpaceValue(value, value+1, value+2); + const openvdb::Vec3f indexSpaceValue = transform->worldToIndex(worldSpaceValue); + const float voxelSpaceValueX = indexSpaceValue.x() - math::Round(indexSpaceValue.x()) + 0.5f; + const float voxelSpaceValueY = indexSpaceValue.y() - math::Round(indexSpaceValue.y()) + 0.5f; + const float voxelSpaceValueZ = indexSpaceValue.z() - math::Round(indexSpaceValue.z()) + 0.5f; + const openvdb::Vec3f voxelSpaceValue(voxelSpaceValueX, voxelSpaceValueY, voxelSpaceValueZ); + const openvdb::math::Vec3 intValue = floatingPointToFixedPoint>(voxelSpaceValue); + + // convert back to floating-point value (vector) + + const openvdb::Vec3f newVoxelSpaceValue = fixedPointToFloatingPoint(intValue); + const float newIndexSpaceValueX = newVoxelSpaceValue.x() + math::Round(indexSpaceValue.x()) - 0.5f; + const float newIndexSpaceValueY = newVoxelSpaceValue.y() + math::Round(indexSpaceValue.y()) - 0.5f; + const float newIndexSpaceValueZ = newVoxelSpaceValue.z() + math::Round(indexSpaceValue.z()) - 0.5f; + const openvdb::Vec3f newIndexSpaceValue(newIndexSpaceValueX, newIndexSpaceValueY, newIndexSpaceValueZ); + const openvdb::Vec3f newWorldSpaceValue = transform->indexToWorld(newIndexSpaceValue); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(worldSpaceValue.x(), newWorldSpaceValue.x(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(worldSpaceValue.y(), newWorldSpaceValue.y(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(worldSpaceValue.z(), newWorldSpaceValue.z(), /*tolerance=*/1e-6); + + } +} + +namespace +{ +// use a dummy factory as TypedAttributeArray::factory is private +static AttributeArray::Ptr factoryInt(Index n, Index strideOrTotalSize, bool constantStride) +{ + return TypedAttributeArray::create(n, strideOrTotalSize, constantStride); +} +} // namespace + +void +TestAttributeArray::testRegistry() +{ + using AttributeF = TypedAttributeArray; + using AttributeFTrnc = TypedAttributeArray; + + AttributeArray::clearRegistry(); + + { // cannot create AttributeArray that is not registered + CPPUNIT_ASSERT(!AttributeArray::isRegistered(AttributeF::attributeType())); + CPPUNIT_ASSERT_THROW(AttributeArray::create(AttributeF::attributeType(), Index(5)), LookupError); + } + + { // throw when attempting to register a float type with an integer factory + CPPUNIT_ASSERT_THROW(AttributeArray::registerType( + AttributeF::attributeType(), factoryInt), KeyError); + } + + // register the attribute array + + AttributeF::registerType(); + + { // can register an AttributeArray with the same value type but different codec + CPPUNIT_ASSERT_NO_THROW(AttributeFTrnc::registerType()); + CPPUNIT_ASSERT(AttributeArray::isRegistered(AttributeF::attributeType())); + CPPUNIT_ASSERT(AttributeArray::isRegistered(AttributeFTrnc::attributeType())); + } + + { // un-registering + AttributeArray::unregisterType(AttributeF::attributeType()); + CPPUNIT_ASSERT(!AttributeArray::isRegistered(AttributeF::attributeType())); + CPPUNIT_ASSERT(AttributeArray::isRegistered(AttributeFTrnc::attributeType())); + } + + { // clearing registry + AttributeF::registerType(); + AttributeArray::clearRegistry(); + CPPUNIT_ASSERT(!AttributeArray::isRegistered(AttributeF::attributeType())); + } +} + +void +TestAttributeArray::testAttributeArray() +{ + using AttributeArrayF = TypedAttributeArray; + using AttributeArrayD = TypedAttributeArray; + + { + AttributeArray::Ptr attr(new AttributeArrayD(50)); + + CPPUNIT_ASSERT_EQUAL(Index(50), attr->size()); + } + + { + AttributeArray::Ptr attr(new AttributeArrayD(50)); + + CPPUNIT_ASSERT_EQUAL(Index(50), attr->size()); + + AttributeArrayD& typedAttr = static_cast(*attr); + + typedAttr.set(0, 0.5); + + double value = 0.0; + typedAttr.get(0, value); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.5), value, /*tolerance=*/double(0.0)); + + // test unsafe methods for get() and set() + + typedAttr.setUnsafe(0, 1.5); + typedAttr.getUnsafe(0, value); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.5), value, /*tolerance=*/double(0.0)); + + // out-of-range get() and set() + CPPUNIT_ASSERT_THROW(typedAttr.set(100, 0.5), openvdb::IndexError); + CPPUNIT_ASSERT_THROW(typedAttr.set(100, 1), openvdb::IndexError); + CPPUNIT_ASSERT_THROW(typedAttr.get(100, value), openvdb::IndexError); + CPPUNIT_ASSERT_THROW(typedAttr.get(100), openvdb::IndexError); + } + +#ifdef NDEBUG + { // test setUnsafe and getUnsafe on uniform arrays + AttributeArrayD::Ptr attr(new AttributeArrayD(50)); + + CPPUNIT_ASSERT_EQUAL(Index(50), attr->size()); + attr->collapse(5.0); + CPPUNIT_ASSERT(attr->isUniform()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(attr->getUnsafe(10), 5.0, /*tolerance=*/double(0.0)); + CPPUNIT_ASSERT(attr->isUniform()); + + // this is expected behaviour because for performance reasons, array is not implicitly expanded + + attr->setUnsafe(10, 15.0); + CPPUNIT_ASSERT(attr->isUniform()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(attr->getUnsafe(5), 15.0, /*tolerance=*/double(0.0)); + + attr->expand(); + CPPUNIT_ASSERT(!attr->isUniform()); + attr->setUnsafe(10, 25.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(attr->getUnsafe(5), 15.0, /*tolerance=*/double(0.0)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(attr->getUnsafe(10), 25.0, /*tolerance=*/double(0.0)); + } +#endif + + using AttributeArrayC = TypedAttributeArray>; + + { // test hasValueType() + AttributeArray::Ptr attrC(new AttributeArrayC(50)); + AttributeArray::Ptr attrD(new AttributeArrayD(50)); + AttributeArray::Ptr attrF(new AttributeArrayF(50)); + + CPPUNIT_ASSERT(attrD->hasValueType()); + CPPUNIT_ASSERT(attrC->hasValueType()); + CPPUNIT_ASSERT(!attrF->hasValueType()); + + CPPUNIT_ASSERT(!attrD->hasValueType()); + CPPUNIT_ASSERT(!attrC->hasValueType()); + CPPUNIT_ASSERT(attrF->hasValueType()); + } + + { // lots of type checking +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + Index size(50); + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("bool"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(1), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(1), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("int8"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(1), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(1), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("int16"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(2), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(2), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("int32"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("int64"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(8), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(8), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + // half is not registered by default, but for complete-ness + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("half"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(2), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(2), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("float"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("double"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(8), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(8), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray> typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("vec3i"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(12), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(12), attr.storageTypeSize()); + CPPUNIT_ASSERT(!attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(attr.valueTypeIsClass()); + CPPUNIT_ASSERT(attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray> typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("vec3d"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(24), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(24), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(attr.valueTypeIsClass()); + CPPUNIT_ASSERT(attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray> typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("mat3s"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(36), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(36), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray> typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("mat4d"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(128), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(128), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray> typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("quats"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("null"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(16), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(16), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } + { + TypedAttributeArray typedAttr(size); + AttributeArray& attr(typedAttr); + CPPUNIT_ASSERT_EQUAL(Name("float"), attr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("trnc"), attr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(2), attr.storageTypeSize()); + CPPUNIT_ASSERT(attr.valueTypeIsFloatingPoint()); + CPPUNIT_ASSERT(!attr.valueTypeIsClass()); + CPPUNIT_ASSERT(!attr.valueTypeIsVector()); + CPPUNIT_ASSERT(!attr.valueTypeIsQuaternion()); + CPPUNIT_ASSERT(!attr.valueTypeIsMatrix()); + } +#endif + } + + { + AttributeArray::Ptr attr(new AttributeArrayC(50)); + + AttributeArrayC& typedAttr = static_cast(*attr); + + typedAttr.set(0, 0.5); + + double value = 0.0; + typedAttr.get(0, value); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.5), value, /*tolerance=*/double(0.0001)); + + // test unsafe methods for get() and set() + + double value2 = 0.0; + typedAttr.setUnsafe(0, double(0.2)); + typedAttr.getUnsafe(0, value2); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.2), value2, /*tolerance=*/double(0.0001)); + } + + using AttributeArrayI = TypedAttributeArray; + + { // Base class API + + AttributeArray::Ptr attr(new AttributeArrayI(50)); + + CPPUNIT_ASSERT_EQUAL(Index(50), attr->size()); + + CPPUNIT_ASSERT_EQUAL((sizeof(AttributeArrayI) + sizeof(int)), attr->memUsage()); + + CPPUNIT_ASSERT(attr->isType()); + CPPUNIT_ASSERT(!attr->isType()); + + CPPUNIT_ASSERT(*attr == *attr); + } + + { // Typed class API + + const Index count = 50; + const size_t uniformMemUsage = sizeof(AttributeArrayI) + sizeof(int); + const size_t expandedMemUsage = sizeof(AttributeArrayI) + count * sizeof(int); + + AttributeArrayI attr(count); + + CPPUNIT_ASSERT_EQUAL(Index(count), attr.size()); + + CPPUNIT_ASSERT_EQUAL(0, attr.get(0)); + CPPUNIT_ASSERT_EQUAL(0, attr.get(10)); + + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(uniformMemUsage, attr.memUsage()); + + attr.set(0, 10); + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(expandedMemUsage, attr.memUsage()); + + AttributeArrayI attr2(count); + attr2.set(0, 10); + + CPPUNIT_ASSERT(attr == attr2); + + attr.set(1, 5); + + CPPUNIT_ASSERT(!attr.compact()); + CPPUNIT_ASSERT(!attr.isUniform()); + + CPPUNIT_ASSERT_EQUAL(10, attr.get(0)); + CPPUNIT_ASSERT_EQUAL(5, attr.get(1)); + CPPUNIT_ASSERT_EQUAL(0, attr.get(2)); + + attr.collapse(5); + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(uniformMemUsage, attr.memUsage()); + + CPPUNIT_ASSERT_EQUAL(5, attr.get(0)); + CPPUNIT_ASSERT_EQUAL(5, attr.get(20)); + CPPUNIT_ASSERT_EQUAL(5, attr.getUnsafe(20)); + + attr.expand(/*fill=*/false); + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(expandedMemUsage, attr.memUsage()); + + attr.collapse(5); + + CPPUNIT_ASSERT(attr.isUniform()); + + attr.expand(); + + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(expandedMemUsage, attr.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, attr.get(i)); + } + + CPPUNIT_ASSERT(attr.compact()); + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT(attr.compact()); + + attr.expand(); + + attr.fill(10); + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(expandedMemUsage, attr.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(10, attr.get(i)); + } + + attr.collapse(7); + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(uniformMemUsage, attr.memUsage()); + + CPPUNIT_ASSERT_EQUAL(7, attr.get(0)); + CPPUNIT_ASSERT_EQUAL(7, attr.get(20)); + + attr.fill(5); + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT_EQUAL(uniformMemUsage, attr.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, attr.get(i)); + } + + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + + attr.setTransient(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + + attr.setHidden(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + + attr.setTransient(false); + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + + attr.setHidden(false); + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + + attr.setHidden(true); + + { // test copy construction + AttributeArrayI attrB(attr); + CPPUNIT_ASSERT(matchingNamePairs(attr.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attr.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attr.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attr.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attr.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attr.isHidden(), attrB.isHidden()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attr.get(i), attrB.get(i)); + CPPUNIT_ASSERT_EQUAL(attr.get(i), attrB.getUnsafe(i)); + CPPUNIT_ASSERT_EQUAL(attr.getUnsafe(i), attrB.getUnsafe(i)); + } + } + + { // Equality using an unregistered attribute type + TypedAttributeArray attr1(50); + TypedAttributeArray attr2(50); + + CPPUNIT_ASSERT(attr1 == attr2); + } + + // attribute array must not be uniform for compression + + attr.set(1, 7); + attr.set(2, 8); + attr.set(6, 100); + } + + { // Fixed codec (position range) + AttributeArray::Ptr attr1(new AttributeArrayC(50)); + + AttributeArrayC& fixedPoint = static_cast(*attr1); + + // position range is -0.5 => 0.5 + + fixedPoint.set(0, -0.6); + fixedPoint.set(1, -0.4); + fixedPoint.set(2, 0.4); + fixedPoint.set(3, 0.6); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(-0.5), fixedPoint.get(0), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(-0.4), fixedPoint.get(1), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.4), fixedPoint.get(2), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.5), fixedPoint.get(3), /*tolerance=*/double(0.0001)); + } + + using UnitFixedPointCodec8 = FixedPointCodec; + using AttributeArrayUFxpt8 = TypedAttributeArray; + + { // 8-bit fixed codec (unit range) + AttributeArray::Ptr attr1(new AttributeArrayUFxpt8(50)); + + AttributeArrayUFxpt8& fixedPoint = static_cast(*attr1); + + // unit range is 0.0 => 1.0 + + fixedPoint.set(0, -0.2); + fixedPoint.set(1, 0.3); + fixedPoint.set(2, 0.6); + fixedPoint.set(3, 1.1); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), fixedPoint.get(0), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.3), fixedPoint.get(1), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.6), fixedPoint.get(2), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), fixedPoint.get(3), /*tolerance=*/double(0.0001)); + } + + using UnitFixedPointCodec16 = FixedPointCodec; + using AttributeArrayUFxpt16 = TypedAttributeArray; + + { // 16-bit fixed codec (unit range) + AttributeArray::Ptr attr1(new AttributeArrayUFxpt16(50)); + + AttributeArrayUFxpt16& fixedPoint = static_cast(*attr1); + + // unit range is 0.0 => 1.0 + + fixedPoint.set(0, -0.2); + fixedPoint.set(1, 0.3); + fixedPoint.set(2, 0.6); + fixedPoint.set(3, 1.1); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), fixedPoint.get(0), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.3), fixedPoint.get(1), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.6), fixedPoint.get(2), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), fixedPoint.get(3), /*tolerance=*/double(0.0001)); + } + + using AttributeArrayU = TypedAttributeArray; + + { // UnitVec codec test + AttributeArray::Ptr attr1(new AttributeArrayU(50)); + + AttributeArrayU& unitVec = static_cast(*attr1); + + // all vectors must be unit length + + const openvdb::Vec3f vec1(1.0, 0.0, 0.0); + const openvdb::Vec3f vec2(openvdb::Vec3f(1.0, 2.0, 3.0).unit()); + const openvdb::Vec3f vec3(openvdb::Vec3f(1.0, 2.0, 300000.0).unit()); + + unitVec.set(0, vec1); + unitVec.set(1, vec2); + unitVec.set(2, vec3); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec1.x()), unitVec.get(0).x(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec1.y()), unitVec.get(0).y(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec1.z()), unitVec.get(0).z(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec2.x()), unitVec.get(1).x(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec2.y()), unitVec.get(1).y(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec2.z()), unitVec.get(1).z(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec3.x()), unitVec.get(2).x(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec3.y()), unitVec.get(2).y(), /*tolerance=*/double(0.0001)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(vec3.z()), unitVec.get(2).z(), /*tolerance=*/double(0.0001)); + } + + { // IO + const Index count = 50; + AttributeArrayI attrA(count); + + for (unsigned i = 0; i < unsigned(count); ++i) { + attrA.set(i, int(i)); + } + + attrA.setHidden(true); + + std::ostringstream ostr(std::ios_base::binary); + io::setDataCompression(ostr, io::COMPRESS_BLOSC); + + attrA.write(ostr); + + AttributeArrayI attrB; + + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrB.read(istr); + + CPPUNIT_ASSERT(attrA == attrB); + + AttributeArrayI attrC(count, 3); + attrC.setTransient(true); + + std::ostringstream ostrC(std::ios_base::binary); + attrC.write(ostrC); + + CPPUNIT_ASSERT(ostrC.str().empty()); + + std::ostringstream ostrD(std::ios_base::binary); + attrC.write(ostrD, /*transient=*/true); + + CPPUNIT_ASSERT(!ostrD.str().empty()); + } + + // Registry + AttributeArrayI::registerType(); + + AttributeArray::Ptr attr = + AttributeArray::create( + AttributeArrayI::attributeType(), 34); + + { // Casting + AttributeArray::Ptr array = TypedAttributeArray::create(0); + CPPUNIT_ASSERT_NO_THROW(TypedAttributeArray::cast(*array)); + CPPUNIT_ASSERT_THROW(TypedAttributeArray::cast(*array), TypeError); + + AttributeArray::ConstPtr constArray = array; + CPPUNIT_ASSERT_NO_THROW(TypedAttributeArray::cast(*constArray)); + CPPUNIT_ASSERT_THROW(TypedAttributeArray::cast(*constArray), TypeError); + } +} + +struct VectorWrapper +{ + using T = std::vector>; + + VectorWrapper(const T& _data) : data(_data) { } + operator bool() const { return index < data.size(); } + VectorWrapper& operator++() { index++; return *this; } + Index sourceIndex() const { assert(*this); return data[index].first; } + Index targetIndex() const { assert(*this); return data[index].second; } + +private: + const T& data; + T::size_type index = 0; +}; // struct VectorWrapper + +void +TestAttributeArray::testAttributeArrayCopy() +{ + using AttributeArrayD = TypedAttributeArray; + + Index size(50); + + // initialize some test data + + AttributeArrayD sourceTypedAttr(size); + AttributeArray& sourceAttr(sourceTypedAttr); + CPPUNIT_ASSERT_EQUAL(size, sourceAttr.size()); + + sourceAttr.expand(); + for (Index i = 0; i < size; i++) { + sourceTypedAttr.set(i, double(i)/2); + } + + // initialize source -> target pairs that reverse the order + + std::vector> indexPairs; + for (Index i = 0; i < size; i++) { + indexPairs.push_back(std::make_pair(i, size-i-1)); + } + + // create a new index pair wrapper + + VectorWrapper wrapper(indexPairs); + + // build a target attribute array + + AttributeArrayD targetTypedAttr(size); + AttributeArray& targetAttr(targetTypedAttr); + for (const auto& pair : indexPairs) { + targetTypedAttr.set(pair.second, sourceTypedAttr.get(pair.first)); + } + +#if OPENVDB_ABI_VERSION_NUMBER < 6 + { // verify behaviour with slow virtual function (ABI<6) + AttributeArrayD typedAttr(size); + AttributeArray& attr(typedAttr); + + for (const auto& pair : indexPairs) { + attr.set(pair.second, sourceAttr, pair.first); + } + + CPPUNIT_ASSERT(targetAttr == attr); + } +#else + using AttributeArrayF = TypedAttributeArray; + + { // use std::vector>::begin() as iterator to AttributeArray::copy() + AttributeArrayD typedAttr(size); + AttributeArray& attr(typedAttr); + + attr.copyValues(sourceAttr, wrapper); + + CPPUNIT_ASSERT(targetAttr == attr); + } + + { // attempt to copy values between attribute arrays with different storage sizes + AttributeArrayF typedAttr(size); + AttributeArray& attr(typedAttr); + + CPPUNIT_ASSERT_THROW(attr.copyValues(sourceAttr, wrapper), TypeError); + } + + { // attempt to copy values between integer and float attribute arrays + AttributeArrayF typedAttr(size); + AttributeArray& attr(typedAttr); + + CPPUNIT_ASSERT_THROW(attr.copyValues(sourceAttr, wrapper), TypeError); + } + + { // copy values between attribute arrays with different value types, but the same storage type + // target half array + TypedAttributeArray targetTypedAttr1(size); + AttributeArray& targetAttr1(targetTypedAttr1); + for (Index i = 0; i < size; i++) { + targetTypedAttr1.set(i, + io::RealToHalf::convert(sourceTypedAttr.get(i))); + } + + // truncated float array + TypedAttributeArray targetTypedAttr2(size); + AttributeArray& targetAttr2(targetTypedAttr2); + + targetAttr2.copyValues(targetAttr1, wrapper); + + // equality fails as attribute types are not the same + CPPUNIT_ASSERT(targetAttr2 != targetAttr); + CPPUNIT_ASSERT(targetAttr2.type() != targetAttr.type()); + // however testing value equality succeeds + for (Index i = 0; i < size; i++) { + CPPUNIT_ASSERT(targetTypedAttr2.get(i) == targetTypedAttr.get(i)); + } + } + + { // out-of-range checking + AttributeArrayD typedAttr(size); + AttributeArray& attr(typedAttr); + + decltype(indexPairs) rangeIndexPairs(indexPairs); + + rangeIndexPairs[10].first = size+1; + + VectorWrapper rangeWrapper(rangeIndexPairs); + + CPPUNIT_ASSERT_THROW(attr.copyValues(sourceAttr, rangeWrapper), IndexError); + + rangeIndexPairs[10].first = 0; + + CPPUNIT_ASSERT_NO_THROW(attr.copyValues(sourceAttr, rangeWrapper)); + + rangeIndexPairs[10].second = size+1; + + CPPUNIT_ASSERT_THROW(attr.copyValues(sourceAttr, rangeWrapper), IndexError); + } + + { // source attribute array is uniform + AttributeArrayD uniformTypedAttr(size); + AttributeArray& uniformAttr(uniformTypedAttr); + + uniformTypedAttr.collapse(5.3); + + CPPUNIT_ASSERT(uniformAttr.isUniform()); + + AttributeArrayD typedAttr(size); + AttributeArray& attr(typedAttr); + + CPPUNIT_ASSERT(attr.isUniform()); + + attr.copyValues(uniformAttr, wrapper); + + CPPUNIT_ASSERT(attr.isUniform()); + + attr.copyValues(uniformAttr, wrapper, /*preserveUniformity=*/false); + + CPPUNIT_ASSERT(!attr.isUniform()); + + typedAttr.collapse(1.4); + + CPPUNIT_ASSERT(attr.isUniform()); + + // resize the vector to be smaller than the size of the array + + decltype(indexPairs) subsetIndexPairs(indexPairs); + subsetIndexPairs.resize(size-1); + + decltype(wrapper) subsetWrapper(subsetIndexPairs); + + // now copy the values attempting to preserve uniformity + + attr.copyValues(uniformAttr, subsetWrapper, /*preserveUniformity=*/true); + + // verify that the array cannot be kept uniform + + CPPUNIT_ASSERT(!attr.isUniform()); + } + + { // target attribute array is uniform + AttributeArrayD uniformTypedAttr(size); + AttributeArray& uniformAttr(uniformTypedAttr); + + uniformTypedAttr.collapse(5.3); + + CPPUNIT_ASSERT(uniformAttr.isUniform()); + + AttributeArrayD typedAttr(size); + AttributeArray& attr(typedAttr); + + typedAttr.set(5, 1.2); + typedAttr.set(10, 3.1); + + CPPUNIT_ASSERT(!attr.isUniform()); + + std::vector> uniformIndexPairs; + uniformIndexPairs.push_back(std::make_pair(10, 0)); + uniformIndexPairs.push_back(std::make_pair(5, 0)); + VectorWrapper uniformWrapper(uniformIndexPairs); + + // note that calling copyValues() will implicitly expand the uniform target + + CPPUNIT_ASSERT_NO_THROW(uniformAttr.copyValuesUnsafe(attr, uniformWrapper)); + + CPPUNIT_ASSERT(uniformAttr.isUniform()); + CPPUNIT_ASSERT(uniformTypedAttr.get(0) == typedAttr.get(5)); + } +#endif +} + + +void +TestAttributeArray::testAccessorEval() +{ + using AttributeF = TypedAttributeArray; + + struct TestAccessor + { + static float getterError(const AttributeArray* /*array*/, const Index /*n*/) { + OPENVDB_THROW(NotImplementedError, ""); + } + static void setterError [[noreturn]] (AttributeArray* /*array*/, + const Index /*n*/, const float& /*value*/) + { + OPENVDB_THROW(NotImplementedError, ""); + } + + //static float testGetter(const AttributeArray* array, const Index n) { + // return AccessorEval::get(&getterError, array, n); + //} + //static void testSetter(AttributeArray* array, const Index n, const float& value) { + // AccessorEval::set(&setterError, array, n, value); + //} + }; + + { // test get and set (NullCodec) + AttributeF::Ptr attr = AttributeF::create(10); + attr->collapse(5.0f); + attr->expand(); + + AttributeArray& array = *attr; + + // explicit codec is used here so getter and setter are not called + + AttributeWriteHandle writeHandle(array); + + writeHandle.mSetter = TestAccessor::setterError; + + writeHandle.set(4, 15.0f); + + AttributeHandle handle(array); + + const AttributeArray& constArray(array); + CPPUNIT_ASSERT_EQUAL(&constArray, &handle.array()); + + handle.mGetter = TestAccessor::getterError; + + const float result1 = handle.get(4); + const float result2 = handle.get(6); + + CPPUNIT_ASSERT_EQUAL(15.0f, result1); + CPPUNIT_ASSERT_EQUAL(5.0f, result2); + } + + { // test get and set (UnknownCodec) + AttributeF::Ptr attr = AttributeF::create(10); + attr->collapse(5.0f); + attr->expand(); + + AttributeArray& array = *attr; + + // unknown codec is used here so getter and setter are called + + AttributeWriteHandle writeHandle(array); + + CPPUNIT_ASSERT_EQUAL(&array, &writeHandle.array()); + + writeHandle.mSetter = TestAccessor::setterError; + + CPPUNIT_ASSERT_THROW(writeHandle.set(4, 15.0f), NotImplementedError); + + AttributeHandle handle(array); + + handle.mGetter = TestAccessor::getterError; + + CPPUNIT_ASSERT_THROW(handle.get(4), NotImplementedError); + } +} + + +void +TestAttributeArray::testAttributeHandle() +{ + using namespace openvdb::math; + + using AttributeI = TypedAttributeArray; + using AttributeFH = TypedAttributeArray; + using AttributeVec3f = TypedAttributeArray; + + using AttributeHandleRWI = AttributeWriteHandle; + + AttributeI::registerType(); + AttributeFH::registerType(); + AttributeVec3f::registerType(); + + // create a Descriptor and AttributeSet + + using Descriptor = AttributeSet::Descriptor; + Descriptor::Ptr descr = Descriptor::create(AttributeVec3f::attributeType()); + + unsigned count = 500; + AttributeSet attrSet(descr, /*arrayLength=*/count); + + attrSet.appendAttribute("truncate", AttributeFH::attributeType()); + attrSet.appendAttribute("int", AttributeI::attributeType()); + + // check uniform value implementation + + { + AttributeArray* array = attrSet.get(2); + + AttributeHandleRWI nonExpandingHandle(*array, /*expand=*/false); + CPPUNIT_ASSERT(nonExpandingHandle.isUniform()); + + AttributeHandleRWI handle(*array); + CPPUNIT_ASSERT(!handle.isUniform()); + + CPPUNIT_ASSERT_EQUAL(array->size(), handle.size()); + + CPPUNIT_ASSERT_EQUAL(0, handle.get(0)); + CPPUNIT_ASSERT_EQUAL(0, handle.get(10)); + + handle.set(0, 10); + CPPUNIT_ASSERT(!handle.isUniform()); + + handle.collapse(5); + CPPUNIT_ASSERT(handle.isUniform()); + + CPPUNIT_ASSERT_EQUAL(5, handle.get(0)); + CPPUNIT_ASSERT_EQUAL(5, handle.get(20)); + + handle.expand(); + CPPUNIT_ASSERT(!handle.isUniform()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, handle.get(i)); + } + + CPPUNIT_ASSERT(handle.compact()); + CPPUNIT_ASSERT(handle.isUniform()); + + handle.expand(); + + handle.fill(10); + CPPUNIT_ASSERT(!handle.isUniform()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(10, handle.get(i)); + } + + handle.collapse(7); + CPPUNIT_ASSERT(handle.isUniform()); + + CPPUNIT_ASSERT_EQUAL(7, handle.get(0)); + CPPUNIT_ASSERT_EQUAL(7, handle.get(20)); + + handle.fill(5); + CPPUNIT_ASSERT(handle.isUniform()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, handle.get(i)); + } + + CPPUNIT_ASSERT(handle.isUniform()); + } + + { + AttributeArray* array = attrSet.get(0); + + AttributeWriteHandle handle(*array); + + handle.set(5, Vec3f(10)); + + CPPUNIT_ASSERT_EQUAL(Vec3f(10), handle.get(5)); + } + + { + AttributeArray* array = attrSet.get(1); + + AttributeWriteHandle handle(*array); + + handle.set(6, float(11)); + + CPPUNIT_ASSERT_EQUAL(float(11), handle.get(6)); + + { + AttributeHandle handleRO(*array); + + CPPUNIT_ASSERT_EQUAL(float(11), handleRO.get(6)); + } + } + + // check values have been correctly set without using handles + + { + AttributeVec3f* array = static_cast(attrSet.get(0)); + + CPPUNIT_ASSERT(array); + + CPPUNIT_ASSERT_EQUAL(Vec3f(10), array->get(5)); + } + + { + AttributeFH* array = static_cast(attrSet.get(1)); + + CPPUNIT_ASSERT(array); + + CPPUNIT_ASSERT_EQUAL(float(11), array->get(6)); + } +} + +void +TestAttributeArray::testStrided() +{ + using AttributeArrayI = TypedAttributeArray; + using StridedHandle = AttributeHandle; + using StridedWriteHandle = AttributeWriteHandle; + + { // non-strided array + AttributeArrayI::Ptr array = AttributeArrayI::create(/*n=*/2, /*stride=*/1); + CPPUNIT_ASSERT(array->hasConstantStride()); + CPPUNIT_ASSERT_EQUAL(Index(1), array->stride()); + CPPUNIT_ASSERT_EQUAL(Index(2), array->size()); + CPPUNIT_ASSERT_EQUAL(Index(2), array->dataSize()); + } + + { // strided array + AttributeArrayI::Ptr array = AttributeArrayI::create(/*n=*/2, /*stride=*/3); + + CPPUNIT_ASSERT(array->hasConstantStride()); + + CPPUNIT_ASSERT_EQUAL(Index(3), array->stride()); + CPPUNIT_ASSERT_EQUAL(Index(2), array->size()); + CPPUNIT_ASSERT_EQUAL(Index(6), array->dataSize()); + CPPUNIT_ASSERT(array->isUniform()); + + CPPUNIT_ASSERT_EQUAL(0, array->get(0)); + CPPUNIT_ASSERT_EQUAL(0, array->get(5)); + CPPUNIT_ASSERT_THROW(array->get(6), IndexError); // out-of-range + + CPPUNIT_ASSERT_NO_THROW(StridedHandle::create(*array)); + CPPUNIT_ASSERT_NO_THROW(StridedWriteHandle::create(*array)); + + array->collapse(10); + + CPPUNIT_ASSERT_EQUAL(int(10), array->get(0)); + CPPUNIT_ASSERT_EQUAL(int(10), array->get(5)); + + array->expand(); + + CPPUNIT_ASSERT_EQUAL(int(10), array->get(0)); + CPPUNIT_ASSERT_EQUAL(int(10), array->get(5)); + + array->collapse(0); + + CPPUNIT_ASSERT_EQUAL(int(0), array->get(0)); + CPPUNIT_ASSERT_EQUAL(int(0), array->get(5)); + + StridedWriteHandle writeHandle(*array); + + writeHandle.set(0, 2, 5); + writeHandle.set(1, 1, 10); + + CPPUNIT_ASSERT_EQUAL(Index(3), writeHandle.stride()); + CPPUNIT_ASSERT_EQUAL(Index(2), writeHandle.size()); + + // non-interleaved: 0 0 5 0 10 0 + + CPPUNIT_ASSERT_EQUAL(5, array->get(2)); + CPPUNIT_ASSERT_EQUAL(10, array->get(4)); + + CPPUNIT_ASSERT_EQUAL(5, writeHandle.get(0, 2)); + CPPUNIT_ASSERT_EQUAL(10, writeHandle.get(1, 1)); + + StridedHandle handle(*array); + CPPUNIT_ASSERT(handle.hasConstantStride()); + + CPPUNIT_ASSERT_EQUAL(5, handle.get(0, 2)); + CPPUNIT_ASSERT_EQUAL(10, handle.get(1, 1)); + + CPPUNIT_ASSERT_EQUAL(Index(3), handle.stride()); + CPPUNIT_ASSERT_EQUAL(Index(2), handle.size()); + +// as of ABI=6, the base memory requirements of an AttributeArray have been lowered +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + size_t arrayMem = 40; +#else + size_t arrayMem = 64; +#endif + CPPUNIT_ASSERT_EQUAL(sizeof(int) * /*size*/3 * /*stride*/2 + arrayMem, array->memUsage()); + } + + { // dynamic stride + AttributeArrayI::Ptr array = AttributeArrayI::create( + /*n=*/2, /*stride=*/7, /*constantStride=*/false); + + CPPUNIT_ASSERT(!array->hasConstantStride()); + + // zero indicates dynamic striding + CPPUNIT_ASSERT_EQUAL(Index(0), array->stride()); + CPPUNIT_ASSERT_EQUAL(Index(2), array->size()); + // the actual array size + CPPUNIT_ASSERT_EQUAL(Index(7), array->dataSize()); + CPPUNIT_ASSERT(array->isUniform()); + + CPPUNIT_ASSERT_EQUAL(0, array->get(0)); + CPPUNIT_ASSERT_EQUAL(0, array->get(6)); + CPPUNIT_ASSERT_THROW(array->get(7), IndexError); // out-of-range + + CPPUNIT_ASSERT_NO_THROW(StridedHandle::create(*array)); + CPPUNIT_ASSERT_NO_THROW(StridedWriteHandle::create(*array)); + + // handle is bound as if a linear array with stride 1 + StridedHandle handle(*array); + CPPUNIT_ASSERT(!handle.hasConstantStride()); + CPPUNIT_ASSERT_EQUAL(Index(1), handle.stride()); + CPPUNIT_ASSERT_EQUAL(array->dataSize(), handle.size()); + } + + { // IO + const Index count = 50, total = 100; + AttributeArrayI attrA(count, total, /*constantStride=*/false); + + for (unsigned i = 0; i < unsigned(total); ++i) { + attrA.set(i, int(i)); + } + + std::ostringstream ostr(std::ios_base::binary); + io::setDataCompression(ostr, io::COMPRESS_BLOSC); + attrA.write(ostr); + + AttributeArrayI attrB; + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrB.read(istr); + + CPPUNIT_ASSERT(attrA == attrB); + } +} + +void +TestAttributeArray::testDelayedLoad() +{ + using AttributeArrayI = TypedAttributeArray; + using AttributeArrayF = TypedAttributeArray; + + AttributeArrayI::registerType(); + AttributeArrayF::registerType(); + + SharedPtr mappedFile; + + io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata); + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + { // IO + const Index count = 50; + AttributeArrayI attrA(count); + + for (unsigned i = 0; i < unsigned(count); ++i) { + attrA.set(i, int(i)); + } + + AttributeArrayF attrA2(count); + + std::string filename; + + // write out attribute array to a temp file + { + filename = tempDir + "/openvdb_delayed1"; + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + attrA.writeMetadata(fileout, false, /*paged=*/true); + compression::PagedOutputStream outputStreamSize(fileout); + outputStreamSize.setSizeOnly(true); + attrA.writePagedBuffers(outputStreamSize, false); + outputStreamSize.flush(); + compression::PagedOutputStream outputStream(fileout); + outputStream.setSizeOnly(false); + attrA.writePagedBuffers(outputStream, false); + outputStream.flush(); + + attrA2.writeMetadata(fileout, false, /*paged=*/true); + compression::PagedOutputStream outputStreamSize2(fileout); + outputStreamSize2.setSizeOnly(true); + attrA2.writePagedBuffers(outputStreamSize2, false); + outputStreamSize2.flush(); + compression::PagedOutputStream outputStream2(fileout); + outputStream2.setSizeOnly(false); + attrA2.writePagedBuffers(outputStream2, false); + outputStream2.flush(); + + fileout.close(); + } + + mappedFile = TestMappedFile::create(filename); + + // read in using delayed load and check manual loading of data + { + AttributeArrayI attrB; + AttributeArrayF attrB2; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(matchingNamePairs(attrA.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attrA.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attrA.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attrA.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attrA.isHidden(), attrB.isHidden()); + + AttributeArrayI attrBcopy(attrB); + AttributeArrayI attrBequal = attrB; + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + CPPUNIT_ASSERT(attrBcopy.isOutOfCore()); + CPPUNIT_ASSERT(attrBequal.isOutOfCore()); + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + CPPUNIT_ASSERT(!static_cast(attrB).isDataLoaded()); + CPPUNIT_ASSERT(!static_cast(attrBcopy).isDataLoaded()); + CPPUNIT_ASSERT(!static_cast(attrBequal).isDataLoaded()); +#endif + + attrB.loadData(); + attrBcopy.loadData(); + attrBequal.loadData(); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(!attrBcopy.isOutOfCore()); + CPPUNIT_ASSERT(!attrBequal.isOutOfCore()); + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + CPPUNIT_ASSERT(static_cast(attrB).isDataLoaded()); + CPPUNIT_ASSERT(static_cast(attrBcopy).isDataLoaded()); + CPPUNIT_ASSERT(static_cast(attrBequal).isDataLoaded()); +#endif + + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrBcopy.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrBequal.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrBcopy.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrBequal.get(i)); + } + + attrB2.readMetadata(filein); + compression::PagedInputStream inputStream2(filein); + inputStream2.setSizeOnly(true); + attrB2.readPagedBuffers(inputStream2); + inputStream2.setSizeOnly(false); + attrB2.readPagedBuffers(inputStream2); + + CPPUNIT_ASSERT(matchingNamePairs(attrA2.type(), attrB2.type())); + CPPUNIT_ASSERT_EQUAL(attrA2.size(), attrB2.size()); + CPPUNIT_ASSERT_EQUAL(attrA2.isUniform(), attrB2.isUniform()); + CPPUNIT_ASSERT_EQUAL(attrA2.isTransient(), attrB2.isTransient()); + CPPUNIT_ASSERT_EQUAL(attrA2.isHidden(), attrB2.isHidden()); + + AttributeArrayF attrB2copy(attrB2); + AttributeArrayF attrB2equal = attrB2; + + CPPUNIT_ASSERT(attrB2.isOutOfCore()); + CPPUNIT_ASSERT(attrB2copy.isOutOfCore()); + CPPUNIT_ASSERT(attrB2equal.isOutOfCore()); + attrB2.loadData(); + attrB2copy.loadData(); + attrB2equal.loadData(); + + CPPUNIT_ASSERT(!attrB2.isOutOfCore()); + CPPUNIT_ASSERT(!attrB2copy.isOutOfCore()); + CPPUNIT_ASSERT(!attrB2equal.isOutOfCore()); + + CPPUNIT_ASSERT_EQUAL(attrA2.memUsage(), attrB2.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA2.memUsage(), attrB2copy.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA2.memUsage(), attrB2equal.memUsage()); + + CPPUNIT_ASSERT_EQUAL(attrA2.get(0), attrB2.get(0)); + CPPUNIT_ASSERT_EQUAL(attrA2.get(0), attrB2copy.get(0)); + CPPUNIT_ASSERT_EQUAL(attrA2.get(0), attrB2equal.get(0)); + } + + // read in using delayed load and check fill() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + CPPUNIT_ASSERT(!attrB.isUniform()); + + attrB.fill(5); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, attrB.get(i)); + } + } + + // read in using delayed load and check streaming (write handle) + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + CPPUNIT_ASSERT(!attrB.isUniform()); + + attrB.setStreaming(true); + + { + AttributeWriteHandle handle(attrB); + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(!attrB.isUniform()); + } + + CPPUNIT_ASSERT(!attrB.isUniform()); + } + + // read in using delayed load and check streaming (read handle) + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + CPPUNIT_ASSERT(!attrB.isUniform()); + + attrB.setStreaming(true); + + { + AttributeHandle handle(attrB); + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(!attrB.isUniform()); + } + + CPPUNIT_ASSERT(attrB.isUniform()); + } + + // read in using delayed load and check implicit load through get() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + attrB.get(0); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + } + } + + // read in using delayed load and check implicit load through compress() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + } + + // read in using delayed load and check copy and assignment constructors + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + AttributeArrayI attrC(attrB); + AttributeArrayI attrD = attrB; + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + CPPUNIT_ASSERT(attrC.isOutOfCore()); + CPPUNIT_ASSERT(attrD.isOutOfCore()); + + attrB.loadData(); + attrC.loadData(); + attrD.loadData(); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(!attrC.isOutOfCore()); + CPPUNIT_ASSERT(!attrD.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrC.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrD.get(i)); + } + } + + // read in using delayed load and check implicit load through AttributeHandle + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + AttributeHandle handle(attrB); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + } + + // read in using delayed load and check detaching of file (using collapse()) + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + CPPUNIT_ASSERT(!attrB.isUniform()); + + attrB.collapse(); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(attrB.isUniform()); + + CPPUNIT_ASSERT_EQUAL(0, attrB.get(0)); + } + + // read in and write out using delayed load to check writing out-of-core attributes + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + std::string filename2 = tempDir + "/openvdb_delayed5"; + std::ofstream fileout2(filename2.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout2, streamMetadata); + io::setDataCompression(fileout2, io::COMPRESS_BLOSC); + + attrB.writeMetadata(fileout2, false, /*paged=*/true); + compression::PagedOutputStream outputStreamSize(fileout2); + outputStreamSize.setSizeOnly(true); + attrB.writePagedBuffers(outputStreamSize, false); + outputStreamSize.flush(); + compression::PagedOutputStream outputStream(fileout2); + outputStream.setSizeOnly(false); + attrB.writePagedBuffers(outputStream, false); + outputStream.flush(); + + fileout2.close(); + + AttributeArrayI attrB2; + + std::ifstream filein2(filename2.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein2, streamMetadata); + io::setMappedFilePtr(filein2, mappedFile); + + attrB2.readMetadata(filein2); + compression::PagedInputStream inputStream2(filein2); + inputStream2.setSizeOnly(true); + attrB2.readPagedBuffers(inputStream2); + inputStream2.setSizeOnly(false); + attrB2.readPagedBuffers(inputStream2); + + CPPUNIT_ASSERT(attrB2.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrB.get(i), attrB2.get(i)); + } + + filein2.close(); + } + + // Clean up temp files. + std::remove(mappedFile->filename().c_str()); + std::remove(filename.c_str()); + + AttributeArrayI attrUniform(count); + + // write out uniform attribute array to a temp file + { + filename = tempDir + "/openvdb_delayed2"; + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + attrUniform.writeMetadata(fileout, false, /*paged=*/true); + + compression::PagedOutputStream outputStreamSize(fileout); + outputStreamSize.setSizeOnly(true); + attrUniform.writePagedBuffers(outputStreamSize, false); + outputStreamSize.flush(); + compression::PagedOutputStream outputStream(fileout); + outputStream.setSizeOnly(false); + attrUniform.writePagedBuffers(outputStream, false); + outputStream.flush(); + + fileout.close(); + } + + mappedFile = TestMappedFile::create(filename); + + // read in using delayed load and check fill() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isUniform()); + + attrB.fill(5); + + CPPUNIT_ASSERT(attrB.isUniform()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(5, attrB.get(i)); + } + } + + AttributeArrayI attrStrided(count, /*stride=*/3); + + CPPUNIT_ASSERT_EQUAL(Index(3), attrStrided.stride()); + + // Clean up temp files. + std::remove(mappedFile->filename().c_str()); + std::remove(filename.c_str()); + + // write out strided attribute array to a temp file + { + filename = tempDir + "/openvdb_delayed3"; + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + attrStrided.writeMetadata(fileout, false, /*paged=*/true); + + compression::PagedOutputStream outputStreamSize(fileout); + outputStreamSize.setSizeOnly(true); + attrStrided.writePagedBuffers(outputStreamSize, false); + outputStreamSize.flush(); + compression::PagedOutputStream outputStream(fileout); + outputStream.setSizeOnly(false); + attrStrided.writePagedBuffers(outputStream, false); + outputStream.flush(); + + fileout.close(); + } + + mappedFile = TestMappedFile::create(filename); + + // read in using delayed load and check fill() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT_EQUAL(Index(3), attrB.stride()); + } + + // Clean up temp files. + std::remove(mappedFile->filename().c_str()); + std::remove(filename.c_str()); + + // write out compressed attribute array to a temp file + { + filename = tempDir + "/openvdb_delayed4"; + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + attrA.writeMetadata(fileout, false, /*paged=*/true); + + compression::PagedOutputStream outputStreamSize(fileout); + outputStreamSize.setSizeOnly(true); + attrA.writePagedBuffers(outputStreamSize, false); + outputStreamSize.flush(); + compression::PagedOutputStream outputStream(fileout); + outputStream.setSizeOnly(false); + attrA.writePagedBuffers(outputStream, false); + outputStream.flush(); + + fileout.close(); + } + + mappedFile = TestMappedFile::create(filename); + + // read in using delayed load and check manual loading of data + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + attrB.loadData(); + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrB.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + } + } + + // read in using delayed load and check partial read state + { + std::unique_ptr attrB(new AttributeArrayI); + + CPPUNIT_ASSERT(!(attrB->flags() & AttributeArray::PARTIALREAD)); + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB->readMetadata(filein); + + // PARTIALREAD flag should now be set + CPPUNIT_ASSERT(attrB->flags() & AttributeArray::PARTIALREAD); + + // copy-construct and assign AttributeArray + AttributeArrayI attrC(*attrB); + CPPUNIT_ASSERT(attrC.flags() & AttributeArray::PARTIALREAD); + AttributeArrayI attrD = *attrB; + CPPUNIT_ASSERT(attrD.flags() & AttributeArray::PARTIALREAD); + + // verify deleting attrB is safe + attrB.reset(); + + // verify data is not valid + CPPUNIT_ASSERT(!attrC.validData()); + + { // attempting to write a partially-read AttributeArray throws + std::string filename = tempDir + "/openvdb_partial1"; + ScopedFile f(filename); + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + CPPUNIT_ASSERT_THROW(attrC.writeMetadata(fileout, false, /*paged=*/true), IoError); + } + + // continue loading with copy-constructed AttributeArray + + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrC.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrC.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrC.isOutOfCore()); + attrC.loadData(); + CPPUNIT_ASSERT(!attrC.isOutOfCore()); + + // verify data is now valid + CPPUNIT_ASSERT(attrC.validData()); + + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrC.memUsage()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrC.get(i)); + } + } + + // read in using delayed load and check implicit load through get() + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + attrB.get(0); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + } + } + +#ifdef OPENVDB_USE_BLOSC + // read in using delayed load and check copy and assignment constructors + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + AttributeArrayI attrC(attrB); + AttributeArrayI attrD = attrB; + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + CPPUNIT_ASSERT(attrC.isOutOfCore()); + CPPUNIT_ASSERT(attrD.isOutOfCore()); + + attrB.loadData(); + attrC.loadData(); + attrD.loadData(); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + CPPUNIT_ASSERT(!attrC.isOutOfCore()); + CPPUNIT_ASSERT(!attrD.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrC.get(i)); + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrD.get(i)); + } + } + + // read in using delayed load and check implicit load through AttributeHandle + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + attrB.readMetadata(filein); + compression::PagedInputStream inputStream(filein); + inputStream.setSizeOnly(true); + attrB.readPagedBuffers(inputStream); + inputStream.setSizeOnly(false); + attrB.readPagedBuffers(inputStream); + + CPPUNIT_ASSERT(attrB.isOutOfCore()); + + AttributeHandle handle(attrB); + + CPPUNIT_ASSERT(!attrB.isOutOfCore()); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), handle.get(i)); + } + } +#endif + + // Clean up temp files. + std::remove(mappedFile->filename().c_str()); + std::remove(filename.c_str()); + + // write out invalid serialization flags as metadata to a temp file + { + filename = tempDir + "/openvdb_delayed5"; + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, io::COMPRESS_BLOSC); + + // write out unknown serialization flags to check forwards-compatibility + + Index64 bytes(0); + uint8_t flags(0); + uint8_t serializationFlags(Int16(0x10)); + Index size(0); + + fileout.write(reinterpret_cast(&bytes), sizeof(Index64)); + fileout.write(reinterpret_cast(&flags), sizeof(uint8_t)); + fileout.write(reinterpret_cast(&serializationFlags), sizeof(uint8_t)); + fileout.write(reinterpret_cast(&size), sizeof(Index)); + + fileout.close(); + } + + mappedFile = TestMappedFile::create(filename); + + // read in using delayed load and check metadata fail due to serialization flags + { + AttributeArrayI attrB; + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + CPPUNIT_ASSERT_THROW(attrB.readMetadata(filein), openvdb::IoError); + } + + // cleanup temp files + + std::remove(mappedFile->filename().c_str()); + std::remove(filename.c_str()); + } +} + + +void +TestAttributeArray::testQuaternions() +{ + using AttributeQF = TypedAttributeArray>; + using AttributeQD = TypedAttributeArray; + + AttributeQF::registerType(); + AttributeQD::registerType(); + + CPPUNIT_ASSERT(AttributeQF::attributeType().first == "quats"); + CPPUNIT_ASSERT(AttributeQD::attributeType().first == "quatd"); + + AttributeQF test(/*size=*/5); + + AttributeQD orient(/*size=*/10); + + { // set some quaternion values + AttributeWriteHandle orientHandle(orient); + + orientHandle.set(4, QuatR(1, 2, 3, 4)); + orientHandle.set(7, QuatR::identity()); + } + + { // get some quaternion values + AttributeHandle orientHandle(orient); + + CPPUNIT_ASSERT_EQUAL(QuatR::zero(), orientHandle.get(3)); + CPPUNIT_ASSERT_EQUAL(QuatR(1, 2, 3, 4), orientHandle.get(4)); + CPPUNIT_ASSERT_EQUAL(QuatR::identity(), orientHandle.get(7)); + } + + { // create a quaternion array with a zero uniform value + AttributeQD zero(/*size=*/10, /*stride=*/1, /*constantStride=*/true, QuatR::zero()); + + CPPUNIT_ASSERT_EQUAL(QuatR::zero(), zero.get(5)); + } +} + + +void +TestAttributeArray::testMatrices() +{ + typedef TypedAttributeArray AttributeM; + + AttributeM::registerType(); + + CPPUNIT_ASSERT(AttributeM::attributeType().first == "mat4d"); + + AttributeM matrix(/*size=*/10); + + Mat4d testMatrix(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16); + + { // set some matrix values + AttributeWriteHandle matrixHandle(matrix); + + matrixHandle.set(4, testMatrix); + matrixHandle.set(7, Mat4d::zero()); + } + + { // get some matrix values + AttributeHandle matrixHandle(matrix); + + CPPUNIT_ASSERT_EQUAL(Mat4d::zero(), matrixHandle.get(3)); + CPPUNIT_ASSERT_EQUAL(testMatrix, matrixHandle.get(4)); + CPPUNIT_ASSERT_EQUAL(Mat4d::zero(), matrixHandle.get(7)); + } + + { // create a matrix array with a zero uniform value + AttributeM zero(/*size=*/10, /*stride=*/1, /*constantStride=*/true, Mat4d::zero()); + + CPPUNIT_ASSERT_EQUAL(Mat4d::zero(), zero.get(5)); + } +} + + +namespace profile { + +template +void expand(const Name& prefix, AttrT& attr) +{ + ProfileTimer timer(prefix + ": expand"); + attr.expand(); +} + +template +void set(const Name& prefix, AttrT& attr) +{ + ProfileTimer timer(prefix + ": set"); + const Index size = attr.size(); + for (Index i = 0; i < size; i++) { + attr.setUnsafe(i, typename AttrT::ValueType(i)); + } +} + +template +void setH(const Name& prefix, AttrT& attr) +{ + using ValueType = typename AttrT::ValueType; + ProfileTimer timer(prefix + ": setHandle"); + AttributeWriteHandle handle(attr); + const Index size = attr.size(); + for (Index i = 0; i < size; i++) { + handle.set(i, ValueType(i)); + } +} + +template +void sum(const Name& prefix, const AttrT& attr) +{ + ProfileTimer timer(prefix + ": sum"); + using ValueType = typename AttrT::ValueType; + ValueType sum = 0; + const Index size = attr.size(); + for (Index i = 0; i < size; i++) { + sum += attr.getUnsafe(i); + } + // prevent compiler optimisations removing computation + CPPUNIT_ASSERT(sum!=ValueType()); +} + +template +void sumH(const Name& prefix, const AttrT& attr) +{ + ProfileTimer timer(prefix + ": sumHandle"); + using ValueType = typename AttrT::ValueType; + ValueType sum = 0; + AttributeHandle handle(attr); + for (Index i = 0; i < attr.size(); i++) { + sum += handle.get(i); + } + // prevent compiler optimisations removing computation + CPPUNIT_ASSERT(sum!=ValueType()); +} + +} // namespace profile + +void +TestAttributeArray::testProfile() +{ + using namespace openvdb::util; + using namespace openvdb::math; + + using AttributeArrayF = TypedAttributeArray; + using AttributeArrayF16 = TypedAttributeArray>; + using AttributeArrayF8 = TypedAttributeArray>; + + /////////////////////////////////////////////////// + +#ifdef PROFILE + const size_t elements(1000 * 1000 * 1000); + + std::cerr << std::endl; +#else + const size_t elements(10 * 1000 * 1000); +#endif + + // std::vector + + { + std::vector values; + { + ProfileTimer timer("Vector: resize"); + values.resize(elements); + } + { + ProfileTimer timer("Vector: set"); + for (size_t i = 0; i < elements; i++) { + values[i] = float(i); + } + } + { + ProfileTimer timer("Vector: sum"); + float sum = 0; + for (size_t i = 0; i < elements; i++) { + sum += float(values[i]); + } + // to prevent optimisation clean up + CPPUNIT_ASSERT(sum!=0.0f); + } + } + + // AttributeArray + + { + AttributeArrayF attr(elements); + profile::expand("AttributeArray", attr); + profile::set("AttributeArray", attr); + profile::sum("AttributeArray", attr); + } + + { + AttributeArrayF16 attr(elements); + profile::expand("AttributeArray", attr); + profile::set("AttributeArray", attr); + profile::sum("AttributeArray", attr); + } + + { + AttributeArrayF8 attr(elements); + profile::expand("AttributeArray", attr); + profile::set("AttributeArray", attr); + profile::sum("AttributeArray", attr); + } + + // AttributeHandle (UnknownCodec) + + { + AttributeArrayF attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH("AttributeHandle", attr); + profile::sumH("AttributeHandle", attr); + } + + { + AttributeArrayF16 attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH("AttributeHandle", attr); + profile::sumH("AttributeHandle", attr); + } + + { + AttributeArrayF8 attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH("AttributeHandle", attr); + profile::sumH("AttributeHandle", attr); + } + + // AttributeHandle (explicit codec) + + { + AttributeArrayF attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH("AttributeHandle", attr); + profile::sumH("AttributeHandle", attr); + } + + { + AttributeArrayF16 attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH>("AttributeHandle", attr); + profile::sumH>("AttributeHandle", attr); + } + + { + AttributeArrayF8 attr(elements); + profile::expand("AttributeHandle", attr); + profile::setH>("AttributeHandle", attr); + profile::sumH>("AttributeHandle", attr); + } +} diff --git a/openvdb/unittest/TestAttributeArrayString.cc b/openvdb/unittest/TestAttributeArrayString.cc new file mode 100644 index 00000000..8f3f4657 --- /dev/null +++ b/openvdb/unittest/TestAttributeArrayString.cc @@ -0,0 +1,528 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +#include + +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestAttributeArrayString: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestAttributeArrayString); + CPPUNIT_TEST(testStringMetaInserter); + CPPUNIT_TEST(testStringAttribute); + CPPUNIT_TEST(testStringAttributeHandle); + CPPUNIT_TEST(testStringAttributeWriteHandle); + CPPUNIT_TEST(testProfile); + + CPPUNIT_TEST_SUITE_END(); + + void testStringMetaInserter(); + void testStringAttribute(); + void testStringAttributeHandle(); + void testStringAttributeWriteHandle(); + void testProfile(); + +}; // class TestAttributeArrayString + +CPPUNIT_TEST_SUITE_REGISTRATION(TestAttributeArrayString); + + +//////////////////////////////////////// + + +namespace { + +bool +matchingNamePairs(const openvdb::NamePair& lhs, + const openvdb::NamePair& rhs) +{ + if (lhs.first != rhs.first) return false; + if (lhs.second != rhs.second) return false; + + return true; +} + +} // namespace + + +//////////////////////////////////////// + + +void +TestAttributeArrayString::testStringMetaInserter() +{ + MetaMap metadata; + + StringMetaInserter inserter(metadata); + + { // insert one value + inserter.insert("test"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(1)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test")); + } + + { // insert another value + inserter.insert("test2"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(2)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test")); + meta = metadata.getMetadata("string:1"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test2")); + } + + // remove a value and reset the cache + + metadata.removeMeta("string:1"); + inserter.resetCache(); + + { // re-insert value + inserter.insert("test3"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(2)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test")); + meta = metadata.getMetadata("string:1"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test3")); + } + + { // insert and remove to create a gap + inserter.insert("test4"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(3)); + metadata.removeMeta("string:1"); + inserter.resetCache(); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(2)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test")); + meta = metadata.getMetadata("string:2"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test4")); + } + + { // insert to fill gap + inserter.insert("test10"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(3)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test")); + meta = metadata.getMetadata("string:1"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test10")); + meta = metadata.getMetadata("string:2"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test4")); + } + + { // insert existing value + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(3)); + inserter.insert("test10"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(3)); + } + + metadata.removeMeta("string:0"); + metadata.removeMeta("string:2"); + inserter.resetCache(); + + { // insert other value and string metadata + metadata.insertMeta("int:1", Int32Metadata(5)); + metadata.insertMeta("irrelevant", StringMetadata("irrelevant")); + inserter.resetCache(); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(3)); + inserter.insert("test15"); + CPPUNIT_ASSERT_EQUAL(metadata.metaCount(), size_t(4)); + StringMetadata::Ptr meta = metadata.getMetadata("string:0"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test15")); + meta = metadata.getMetadata("string:1"); + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT_EQUAL(meta->value(), openvdb::Name("test10")); + } +} + + +//////////////////////////////////////// + + +void +TestAttributeArrayString::testStringAttribute() +{ + { // Typed class API + + const Index count = 50; + StringAttributeArray attr(count); + + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + CPPUNIT_ASSERT(isString(attr)); + + attr.setTransient(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + CPPUNIT_ASSERT(isString(attr)); + + attr.setHidden(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + CPPUNIT_ASSERT(isString(attr)); + + attr.setTransient(false); + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + CPPUNIT_ASSERT(isString(attr)); + + StringAttributeArray attrB(attr); + + CPPUNIT_ASSERT(matchingNamePairs(attr.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attr.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attr.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attr.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attr.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attr.isHidden(), attrB.isHidden()); + CPPUNIT_ASSERT_EQUAL(isString(attr), isString(attrB)); + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + AttributeArray& baseAttr(attr); + CPPUNIT_ASSERT_EQUAL(Name(typeNameAsString()), baseAttr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("str"), baseAttr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(4), baseAttr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(4), baseAttr.storageTypeSize()); + CPPUNIT_ASSERT(!baseAttr.valueTypeIsFloatingPoint()); +#endif + } + + { // IO + const Index count = 50; + StringAttributeArray attrA(count); + + for (unsigned i = 0; i < unsigned(count); ++i) { + attrA.set(i, int(i)); + } + + attrA.setHidden(true); + + std::ostringstream ostr(std::ios_base::binary); + attrA.write(ostr); + + StringAttributeArray attrB; + + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrB.read(istr); + + CPPUNIT_ASSERT(matchingNamePairs(attrA.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attrA.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attrA.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attrA.isHidden(), attrB.isHidden()); + CPPUNIT_ASSERT_EQUAL(isString(attrA), isString(attrB)); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + } + } +} + + +void +TestAttributeArrayString::testStringAttributeHandle() +{ + MetaMap metadata; + + StringAttributeArray attr(4); + StringAttributeHandle handle(attr, metadata); + + CPPUNIT_ASSERT_EQUAL(handle.size(), Index(4)); + CPPUNIT_ASSERT_EQUAL(handle.size(), attr.size()); + CPPUNIT_ASSERT_EQUAL(Index(1), handle.stride()); + CPPUNIT_ASSERT(handle.hasConstantStride()); + + { // index 0 should always be an empty string + Name value = handle.get(0); + + CPPUNIT_ASSERT_EQUAL(value, Name("")); + } + + // set first element to 101 + + CPPUNIT_ASSERT(handle.isUniform()); + + attr.set(2, 102); + + CPPUNIT_ASSERT(!handle.isUniform()); + + { // index 101 does not exist as metadata is empty + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + CPPUNIT_ASSERT_THROW(handle.get(2), LookupError); + } + + { // add an element to the metadata for 101 + metadata.insertMeta("string:101", StringMetadata("test101")); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + + CPPUNIT_ASSERT_NO_THROW(handle.get(2)); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("test101")); + + Name name; + handle.get(name, 2); + + CPPUNIT_ASSERT_EQUAL(name, Name("test101")); + } + + { // add a second element to the metadata + metadata.insertMeta("string:102", StringMetadata("test102")); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + + CPPUNIT_ASSERT_NO_THROW(handle.get(2)); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("test101")); + + Name name; + handle.get(name, 2); + + CPPUNIT_ASSERT_EQUAL(name, Name("test101")); + } + + { // set two more values in the array + attr.set(0, 103); + attr.set(1, 103); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("test102")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("test102")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("test101")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("")); + } + + { // change a value + attr.set(1, 102); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("test102")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("test101")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("test101")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("")); + } + + { // cannot use a StringAttributeHandle with a non-string attribute + TypedAttributeArray invalidAttr(50); + CPPUNIT_ASSERT_THROW(StringAttributeHandle(invalidAttr, metadata), TypeError); + } + + // Test stride and hasConstantStride methods for string handles + + { + StringAttributeArray attr(3, 2, true); + StringAttributeHandle handle(attr, metadata); + + CPPUNIT_ASSERT_EQUAL(Index(3), handle.size()); + CPPUNIT_ASSERT_EQUAL(handle.size(), attr.size()); + CPPUNIT_ASSERT_EQUAL(Index(2), handle.stride()); + CPPUNIT_ASSERT(handle.hasConstantStride()); + } + + { + StringAttributeArray attr(4, 10, false); + StringAttributeHandle handle(attr, metadata); + + CPPUNIT_ASSERT_EQUAL(Index(10), handle.size()); + CPPUNIT_ASSERT_EQUAL(Index(4), attr.size()); + CPPUNIT_ASSERT_EQUAL(Index(1), handle.stride()); + CPPUNIT_ASSERT(!handle.hasConstantStride()); + } +} + + +void +TestAttributeArrayString::testStringAttributeWriteHandle() +{ + MetaMap metadata; + + StringAttributeArray attr(4); + StringAttributeWriteHandle handle(attr, metadata); + + { // add some values to metadata + metadata.insertMeta("string:45", StringMetadata("testA")); + metadata.insertMeta("string:90", StringMetadata("testB")); + metadata.insertMeta("string:1000", StringMetadata("testC")); + } + + { // no string values set + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("")); + } + + { // cache not reset since metadata changed + CPPUNIT_ASSERT_THROW(handle.set(1, "testB"), LookupError); + } + + { // empty string always has index 0 + CPPUNIT_ASSERT(handle.contains("")); + } + + { // cache won't contain metadata until it has been reset + CPPUNIT_ASSERT(!handle.contains("testA")); + CPPUNIT_ASSERT(!handle.contains("testB")); + CPPUNIT_ASSERT(!handle.contains("testC")); + } + + handle.resetCache(); + + { // empty string always has index 0 regardless of cache reset + CPPUNIT_ASSERT(handle.contains("")); + } + + { // cache now reset + CPPUNIT_ASSERT(handle.contains("testA")); + CPPUNIT_ASSERT(handle.contains("testB")); + CPPUNIT_ASSERT(handle.contains("testC")); + + CPPUNIT_ASSERT_NO_THROW(handle.set(1, "testB")); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("testB")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("")); + } + + { // add another value + handle.set(2, "testC"); + + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("testB")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("testC")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("")); + } + + handle.resetCache(); + + { // compact tests + CPPUNIT_ASSERT(!handle.compact()); + handle.set(0, "testA"); + handle.set(1, "testA"); + handle.set(2, "testA"); + handle.set(3, "testA"); + CPPUNIT_ASSERT(handle.compact()); + CPPUNIT_ASSERT(handle.isUniform()); + } + + { // expand tests + CPPUNIT_ASSERT(handle.isUniform()); + handle.expand(); + CPPUNIT_ASSERT(!handle.isUniform()); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("testA")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("testA")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("testA")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("testA")); + } + + { // fill tests + CPPUNIT_ASSERT(!handle.isUniform()); + handle.set(3, "testB"); + handle.fill("testC"); + CPPUNIT_ASSERT(!handle.isUniform()); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("testC")); + CPPUNIT_ASSERT_EQUAL(handle.get(1), Name("testC")); + CPPUNIT_ASSERT_EQUAL(handle.get(2), Name("testC")); + CPPUNIT_ASSERT_EQUAL(handle.get(3), Name("testC")); + } + + { // collapse tests + handle.set(2, "testB"); + handle.collapse("testA"); + CPPUNIT_ASSERT(handle.isUniform()); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("testA")); + handle.expand(); + handle.set(2, "testB"); + CPPUNIT_ASSERT(!handle.isUniform()); + handle.collapse(); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + } + + { // empty string tests + handle.collapse(""); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("")); + } +} + + +void +TestAttributeArrayString::testProfile() +{ + +#ifdef PROFILE + struct Timer : public openvdb::util::CpuTimer {}; + const size_t elements = 1000000; +#else + struct Timer { + void start(const std::string&) {} + void stop() {} + }; + const size_t elements = 10000; +#endif + + MetaMap metadata; + StringMetaInserter inserter(metadata); + + Timer timer; + timer.start("StringMetaInserter initialise"); + + for (size_t i = 0; i < elements; ++i) { + inserter.insert("test_string_" + std::to_string(i)); + } + + timer.stop(); + + for (size_t i = 0; i < elements/2; ++i) { + metadata.removeMeta("test_string_" + std::to_string(i*2)); + } + + timer.start("StringMetaInserter resetCache()"); + + inserter.resetCache(); + + timer.stop(); + timer.start("StringMetaInserter insert duplicates"); + + for (size_t i = 0; i < elements; ++i) { + inserter.insert("test_string_" + std::to_string(i)); + } + + timer.stop(); + + openvdb::points::StringAttributeArray attr(elements); + for (size_t i = 0; i < elements; ++i) { + attr.set(Index(i), Index(i)); + } + + timer.start("StringAttributeWriteHandle construction"); + + openvdb::points::StringAttributeWriteHandle handle(attr, metadata); + + timer.stop(); + timer.start("StringAttributeWriteHandle contains()"); + + // half the calls will miss caches + volatile bool result = false; + for (size_t i = 0; i < elements/2; ++i) { + result |= handle.contains("test_string_" + std::to_string(i*4)); + } + + timer.stop(); +} diff --git a/openvdb/unittest/TestAttributeGroup.cc b/openvdb/unittest/TestAttributeGroup.cc new file mode 100644 index 00000000..55d5a3c2 --- /dev/null +++ b/openvdb/unittest/TestAttributeGroup.cc @@ -0,0 +1,560 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +#include + +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestAttributeGroup: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestAttributeGroup); + CPPUNIT_TEST(testAttributeGroup); + CPPUNIT_TEST(testAttributeGroupHandle); + CPPUNIT_TEST(testAttributeGroupFilter); + + CPPUNIT_TEST_SUITE_END(); + + void testAttributeGroup(); + void testAttributeGroupHandle(); + void testAttributeGroupFilter(); +}; // class TestAttributeGroup + +CPPUNIT_TEST_SUITE_REGISTRATION(TestAttributeGroup); + + +//////////////////////////////////////// + + +namespace { + +bool +matchingNamePairs(const openvdb::NamePair& lhs, + const openvdb::NamePair& rhs) +{ + if (lhs.first != rhs.first) return false; + if (lhs.second != rhs.second) return false; + + return true; +} + +} // namespace + + +//////////////////////////////////////// + + +void +TestAttributeGroup::testAttributeGroup() +{ + { // Typed class API + + const size_t count = 50; + GroupAttributeArray attr(count); + + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + CPPUNIT_ASSERT(isGroup(attr)); + + attr.setTransient(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(!attr.isHidden()); + CPPUNIT_ASSERT(isGroup(attr)); + + attr.setHidden(true); + CPPUNIT_ASSERT(attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + CPPUNIT_ASSERT(isGroup(attr)); + + attr.setTransient(false); + CPPUNIT_ASSERT(!attr.isTransient()); + CPPUNIT_ASSERT(attr.isHidden()); + CPPUNIT_ASSERT(isGroup(attr)); + + GroupAttributeArray attrB(attr); + + CPPUNIT_ASSERT(matchingNamePairs(attr.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attr.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attr.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attr.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attr.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attr.isHidden(), attrB.isHidden()); + CPPUNIT_ASSERT_EQUAL(isGroup(attr), isGroup(attrB)); + +#if OPENVDB_ABI_VERSION_NUMBER >= 6 + AttributeArray& baseAttr(attr); + CPPUNIT_ASSERT_EQUAL(Name(typeNameAsString()), baseAttr.valueType()); + CPPUNIT_ASSERT_EQUAL(Name("grp"), baseAttr.codecType()); + CPPUNIT_ASSERT_EQUAL(Index(1), baseAttr.valueTypeSize()); + CPPUNIT_ASSERT_EQUAL(Index(1), baseAttr.storageTypeSize()); + CPPUNIT_ASSERT(!baseAttr.valueTypeIsFloatingPoint()); +#endif + } + + { // casting + TypedAttributeArray floatAttr(4); + AttributeArray& floatArray = floatAttr; + const AttributeArray& constFloatArray = floatAttr; + + CPPUNIT_ASSERT_THROW(GroupAttributeArray::cast(floatArray), TypeError); + CPPUNIT_ASSERT_THROW(GroupAttributeArray::cast(constFloatArray), TypeError); + + GroupAttributeArray groupAttr(4); + AttributeArray& groupArray = groupAttr; + const AttributeArray& constGroupArray = groupAttr; + + CPPUNIT_ASSERT_NO_THROW(GroupAttributeArray::cast(groupArray)); + CPPUNIT_ASSERT_NO_THROW(GroupAttributeArray::cast(constGroupArray)); + } + + { // IO + const size_t count = 50; + GroupAttributeArray attrA(count); + + for (unsigned i = 0; i < unsigned(count); ++i) { + attrA.set(i, int(i)); + } + + attrA.setHidden(true); + + std::ostringstream ostr(std::ios_base::binary); + attrA.write(ostr); + + GroupAttributeArray attrB; + + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrB.read(istr); + + CPPUNIT_ASSERT(matchingNamePairs(attrA.type(), attrB.type())); + CPPUNIT_ASSERT_EQUAL(attrA.size(), attrB.size()); + CPPUNIT_ASSERT_EQUAL(attrA.memUsage(), attrB.memUsage()); + CPPUNIT_ASSERT_EQUAL(attrA.isUniform(), attrB.isUniform()); + CPPUNIT_ASSERT_EQUAL(attrA.isTransient(), attrB.isTransient()); + CPPUNIT_ASSERT_EQUAL(attrA.isHidden(), attrB.isHidden()); + CPPUNIT_ASSERT_EQUAL(isGroup(attrA), isGroup(attrB)); + + for (unsigned i = 0; i < unsigned(count); ++i) { + CPPUNIT_ASSERT_EQUAL(attrA.get(i), attrB.get(i)); + } + } +} + + +void +TestAttributeGroup::testAttributeGroupHandle() +{ + GroupAttributeArray attr(4); + GroupHandle handle(attr, 3); + + CPPUNIT_ASSERT_EQUAL(handle.size(), Index(4)); + CPPUNIT_ASSERT_EQUAL(handle.size(), attr.size()); + + // construct bitmasks + + const GroupType bitmask3 = GroupType(1) << 3; + const GroupType bitmask6 = GroupType(1) << 6; + const GroupType bitmask36 = GroupType(1) << 3 | GroupType(1) << 6; + + // enable attribute 1,2,3 for group permutations of 3 and 6 + attr.set(0, 0); + attr.set(1, bitmask3); + attr.set(2, bitmask6); + attr.set(3, bitmask36); + + CPPUNIT_ASSERT(attr.get(2) != bitmask36); + CPPUNIT_ASSERT_EQUAL(attr.get(3), bitmask36); + + { // group 3 valid for attributes 1 and 3 (using specific offset) + GroupHandle handle3(attr, 3); + + CPPUNIT_ASSERT(!handle3.get(0)); + CPPUNIT_ASSERT(handle3.get(1)); + CPPUNIT_ASSERT(!handle3.get(2)); + CPPUNIT_ASSERT(handle3.get(3)); + } + + { // test group 3 valid for attributes 1 and 3 (unsafe access) + GroupHandle handle3(attr, 3); + + CPPUNIT_ASSERT(!handle3.getUnsafe(0)); + CPPUNIT_ASSERT(handle3.getUnsafe(1)); + CPPUNIT_ASSERT(!handle3.getUnsafe(2)); + CPPUNIT_ASSERT(handle3.getUnsafe(3)); + } + + { // group 6 valid for attributes 2 and 3 (using specific offset) + GroupHandle handle6(attr, 6); + + CPPUNIT_ASSERT(!handle6.get(0)); + CPPUNIT_ASSERT(!handle6.get(1)); + CPPUNIT_ASSERT(handle6.get(2)); + CPPUNIT_ASSERT(handle6.get(3)); + } + + { // groups 3 and 6 only valid for attribute 3 (using bitmask) + GroupHandle handle36(attr, bitmask36, GroupHandle::BitMask()); + + CPPUNIT_ASSERT(!handle36.get(0)); + CPPUNIT_ASSERT(!handle36.get(1)); + CPPUNIT_ASSERT(!handle36.get(2)); + CPPUNIT_ASSERT(handle36.get(3)); + } + + // clear the array + + attr.fill(0); + + CPPUNIT_ASSERT_EQUAL(attr.get(1), GroupType(0)); + + // write handles + + GroupWriteHandle writeHandle3(attr, 3); + GroupWriteHandle writeHandle6(attr, 6); + + // test collapse + + CPPUNIT_ASSERT_EQUAL(writeHandle3.get(1), false); + CPPUNIT_ASSERT_EQUAL(writeHandle6.get(1), false); + + CPPUNIT_ASSERT(writeHandle6.compact()); + CPPUNIT_ASSERT(writeHandle6.isUniform()); + + attr.expand(); + + CPPUNIT_ASSERT(!writeHandle6.isUniform()); + + CPPUNIT_ASSERT(writeHandle3.collapse(true)); + + CPPUNIT_ASSERT(attr.isUniform()); + CPPUNIT_ASSERT(writeHandle3.isUniform()); + CPPUNIT_ASSERT(writeHandle6.isUniform()); + + CPPUNIT_ASSERT_EQUAL(writeHandle3.get(1), true); + CPPUNIT_ASSERT_EQUAL(writeHandle6.get(1), false); + + CPPUNIT_ASSERT(writeHandle3.collapse(false)); + + CPPUNIT_ASSERT(writeHandle3.isUniform()); + CPPUNIT_ASSERT_EQUAL(writeHandle3.get(1), false); + + attr.fill(0); + + writeHandle3.set(1, true); + + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT(!writeHandle3.isUniform()); + CPPUNIT_ASSERT(!writeHandle6.isUniform()); + + CPPUNIT_ASSERT(!writeHandle3.collapse(true)); + + CPPUNIT_ASSERT(!attr.isUniform()); + CPPUNIT_ASSERT(!writeHandle3.isUniform()); + CPPUNIT_ASSERT(!writeHandle6.isUniform()); + + CPPUNIT_ASSERT_EQUAL(writeHandle3.get(1), true); + CPPUNIT_ASSERT_EQUAL(writeHandle6.get(1), false); + + writeHandle6.set(2, true); + + CPPUNIT_ASSERT(!writeHandle3.collapse(false)); + + CPPUNIT_ASSERT(!writeHandle3.isUniform()); + + attr.fill(0); + + writeHandle3.set(1, true); + writeHandle6.set(2, true); + writeHandle3.set(3, true); + writeHandle6.set(3, true); + + { // group 3 valid for attributes 1 and 3 (using specific offset) + GroupHandle handle3(attr, 3); + + CPPUNIT_ASSERT(!handle3.get(0)); + CPPUNIT_ASSERT(handle3.get(1)); + CPPUNIT_ASSERT(!handle3.get(2)); + CPPUNIT_ASSERT(handle3.get(3)); + + CPPUNIT_ASSERT(!writeHandle3.get(0)); + CPPUNIT_ASSERT(writeHandle3.get(1)); + CPPUNIT_ASSERT(!writeHandle3.get(2)); + CPPUNIT_ASSERT(writeHandle3.get(3)); + } + + { // group 6 valid for attributes 2 and 3 (using specific offset) + GroupHandle handle6(attr, 6); + + CPPUNIT_ASSERT(!handle6.get(0)); + CPPUNIT_ASSERT(!handle6.get(1)); + CPPUNIT_ASSERT(handle6.get(2)); + CPPUNIT_ASSERT(handle6.get(3)); + + CPPUNIT_ASSERT(!writeHandle6.get(0)); + CPPUNIT_ASSERT(!writeHandle6.get(1)); + CPPUNIT_ASSERT(writeHandle6.get(2)); + CPPUNIT_ASSERT(writeHandle6.get(3)); + } + + writeHandle3.set(3, false); + + { // group 3 valid for attributes 1 and 3 (using specific offset) + GroupHandle handle3(attr, 3); + + CPPUNIT_ASSERT(!handle3.get(0)); + CPPUNIT_ASSERT(handle3.get(1)); + CPPUNIT_ASSERT(!handle3.get(2)); + CPPUNIT_ASSERT(!handle3.get(3)); + + CPPUNIT_ASSERT(!writeHandle3.get(0)); + CPPUNIT_ASSERT(writeHandle3.get(1)); + CPPUNIT_ASSERT(!writeHandle3.get(2)); + CPPUNIT_ASSERT(!writeHandle3.get(3)); + } + + { // group 6 valid for attributes 2 and 3 (using specific offset) + GroupHandle handle6(attr, 6); + + CPPUNIT_ASSERT(!handle6.get(0)); + CPPUNIT_ASSERT(!handle6.get(1)); + CPPUNIT_ASSERT(handle6.get(2)); + CPPUNIT_ASSERT(handle6.get(3)); + + CPPUNIT_ASSERT(!writeHandle6.get(0)); + CPPUNIT_ASSERT(!writeHandle6.get(1)); + CPPUNIT_ASSERT(writeHandle6.get(2)); + CPPUNIT_ASSERT(writeHandle6.get(3)); + } +} + + +class GroupNotFilter +{ +public: + explicit GroupNotFilter(const AttributeSet::Descriptor::GroupIndex& index) + : mFilter(index) { } + + inline bool initialized() const { return mFilter.initialized(); } + + template + void reset(const LeafT& leaf) { + mFilter.reset(leaf); + } + + template + bool valid(const IterT& iter) const { + return !mFilter.valid(iter); + } + +private: + GroupFilter mFilter; +}; // class GroupNotFilter + + +struct HandleWrapper +{ + HandleWrapper(const GroupHandle& handle) + : mHandle(handle) { } + + GroupHandle groupHandle(const AttributeSet::Descriptor::GroupIndex& /*index*/) const { + return mHandle; + } + +private: + const GroupHandle mHandle; +}; // struct HandleWrapper + + +void +TestAttributeGroup::testAttributeGroupFilter() +{ + using GroupIndex = AttributeSet::Descriptor::GroupIndex; + + GroupIndex zeroIndex; + + typedef IndexIter IndexGroupAllIter; + + GroupAttributeArray attrGroup(4); + const Index32 size = attrGroup.size(); + + { // group values all zero + ValueVoxelCIter indexIter(0, size); + GroupFilter filter(zeroIndex); + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 0))); + IndexGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(!iter); + } + + // enable attributes 0 and 2 for groups 3 and 6 + + const GroupType bitmask = GroupType(1) << 3 | GroupType(1) << 6; + + attrGroup.set(0, bitmask); + attrGroup.set(2, bitmask); + + // index iterator only valid in groups 3 and 6 + { + ValueVoxelCIter indexIter(0, size); + + GroupFilter filter(zeroIndex); + + filter.reset(HandleWrapper(GroupHandle(attrGroup, 0))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 1))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 2))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + CPPUNIT_ASSERT(IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 4))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 5))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 6))); + CPPUNIT_ASSERT(IndexGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 7))); + CPPUNIT_ASSERT(!IndexGroupAllIter(indexIter, filter)); + } + + attrGroup.set(1, bitmask); + attrGroup.set(3, bitmask); + + using IndexNotGroupAllIter = IndexIter; + + // index iterator only not valid in groups 3 and 6 + { + ValueVoxelCIter indexIter(0, size); + + GroupNotFilter filter(zeroIndex); + + filter.reset(HandleWrapper(GroupHandle(attrGroup, 0))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 1))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 2))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + CPPUNIT_ASSERT(!IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 4))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 5))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 6))); + CPPUNIT_ASSERT(!IndexNotGroupAllIter(indexIter, filter)); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 7))); + CPPUNIT_ASSERT(IndexNotGroupAllIter(indexIter, filter)); + } + + // clear group membership for attributes 1 and 3 + + attrGroup.set(1, GroupType(0)); + attrGroup.set(3, GroupType(0)); + + { // index in group next + ValueVoxelCIter indexIter(0, size); + GroupFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(0)); + + CPPUNIT_ASSERT(iter.next()); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(2)); + + CPPUNIT_ASSERT(!iter.next()); + } + + { // index in group prefix ++ + ValueVoxelCIter indexIter(0, size); + GroupFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(0)); + + IndexGroupAllIter old = ++iter; + CPPUNIT_ASSERT_EQUAL(*old, Index32(2)); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(2)); + + CPPUNIT_ASSERT(!iter.next()); + } + + { // index in group postfix ++/-- + ValueVoxelCIter indexIter(0, size); + GroupFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(0)); + + IndexGroupAllIter old = iter++; + CPPUNIT_ASSERT_EQUAL(*old, Index32(0)); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(2)); + + CPPUNIT_ASSERT(!iter.next()); + } + + { // index not in group next + ValueVoxelCIter indexIter(0, size); + GroupNotFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexNotGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(1)); + + CPPUNIT_ASSERT(iter.next()); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(3)); + + CPPUNIT_ASSERT(!iter.next()); + } + + { // index not in group prefix ++ + ValueVoxelCIter indexIter(0, size); + GroupNotFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexNotGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(1)); + + IndexNotGroupAllIter old = ++iter; + CPPUNIT_ASSERT_EQUAL(*old, Index32(3)); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(3)); + + CPPUNIT_ASSERT(!iter.next()); + } + + { // index not in group postfix ++ + ValueVoxelCIter indexIter(0, size); + GroupNotFilter filter(zeroIndex); + filter.reset(HandleWrapper(GroupHandle(attrGroup, 3))); + IndexNotGroupAllIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(1)); + + IndexNotGroupAllIter old = iter++; + CPPUNIT_ASSERT_EQUAL(*old, Index32(1)); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(3)); + + CPPUNIT_ASSERT(!iter.next()); + } +} diff --git a/openvdb/unittest/TestAttributeSet.cc b/openvdb/unittest/TestAttributeSet.cc new file mode 100644 index 00000000..638b6078 --- /dev/null +++ b/openvdb/unittest/TestAttributeSet.cc @@ -0,0 +1,1108 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include + +#include +#include + +class TestAttributeSet: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestAttributeSet); + CPPUNIT_TEST(testAttributeSetDescriptor); + CPPUNIT_TEST(testAttributeSet); + CPPUNIT_TEST(testAttributeSetGroups); + + CPPUNIT_TEST_SUITE_END(); + + void testAttributeSetDescriptor(); + void testAttributeSet(); + void testAttributeSetGroups(); +}; // class TestAttributeSet + +CPPUNIT_TEST_SUITE_REGISTRATION(TestAttributeSet); + + +//////////////////////////////////////// + + +using namespace openvdb; +using namespace openvdb::points; + +namespace { + +bool +matchingAttributeSets(const AttributeSet& lhs, + const AttributeSet& rhs) +{ + if (lhs.size() != rhs.size()) return false; + if (lhs.memUsage() != rhs.memUsage()) return false; + if (lhs.descriptor() != rhs.descriptor()) return false; + + for (size_t n = 0, N = lhs.size(); n < N; ++n) { + + const AttributeArray* a = lhs.getConst(n); + const AttributeArray* b = rhs.getConst(n); + + if (a->size() != b->size()) return false; + if (a->isUniform() != b->isUniform()) return false; + if (a->isHidden() != b->isHidden()) return false; + if (a->type() != b->type()) return false; + } + + return true; +} + +bool +attributeSetMatchesDescriptor( const AttributeSet& attrSet, + const AttributeSet::Descriptor& descriptor) +{ + if (descriptor.size() != attrSet.size()) return false; + + // check default metadata + + const openvdb::MetaMap& meta1 = descriptor.getMetadata(); + const openvdb::MetaMap& meta2 = attrSet.descriptor().getMetadata(); + + // build vector of all default keys + + std::vector defaultKeys; + + for (auto it = meta1.beginMeta(), itEnd = meta1.endMeta(); it != itEnd; ++it) + { + const openvdb::Name& name = it->first; + + if (name.compare(0, 8, "default:") == 0) { + defaultKeys.push_back(name); + } + } + + for (auto it = meta2.beginMeta(), itEnd = meta2.endMeta(); it != itEnd; ++it) + { + const openvdb::Name& name = it->first; + + if (name.compare(0, 8, "default:") == 0) { + if (std::find(defaultKeys.begin(), defaultKeys.end(), name) != defaultKeys.end()) { + defaultKeys.push_back(name); + } + } + } + + // compare metadata value from each metamap + + for (const openvdb::Name& name : defaultKeys) { + openvdb::Metadata::ConstPtr metaValue1 = meta1[name]; + openvdb::Metadata::ConstPtr metaValue2 = meta2[name]; + + if (!metaValue1) return false; + if (!metaValue2) return false; + + if (*metaValue1 != *metaValue2) return false; + } + + // ensure descriptor and attributes are still in sync + + for (const auto& namePos : attrSet.descriptor().map()) { + const size_t pos = descriptor.find(namePos.first); + + if (pos != size_t(namePos.second)) return false; + if (descriptor.type(pos) != attrSet.get(pos)->type()) return false; + } + + return true; +} + +bool testStringVector(std::vector& input) +{ + return input.empty(); +} + +bool testStringVector(std::vector& input, const std::string& name1) +{ + if (input.size() != 1) return false; + if (input[0] != name1) return false; + return true; +} + +bool testStringVector(std::vector& input, + const std::string& name1, const std::string& name2) +{ + if (input.size() != 2) return false; + if (input[0] != name1) return false; + if (input[1] != name2) return false; + return true; +} + +} //unnamed namespace + + +//////////////////////////////////////// + + +void +TestAttributeSet::testAttributeSetDescriptor() +{ + // Define and register some common attribute types + using AttributeVec3f = TypedAttributeArray; + using AttributeS = TypedAttributeArray; + using AttributeI = TypedAttributeArray; + + using Descriptor = AttributeSet::Descriptor; + + { // error on invalid construction + Descriptor::Ptr invalidDescr = Descriptor::create(AttributeVec3f::attributeType()); + CPPUNIT_ASSERT_THROW(invalidDescr->duplicateAppend("P", AttributeS::attributeType()), + openvdb::KeyError); + } + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3f::attributeType()); + + descrA = descrA->duplicateAppend("density", AttributeS::attributeType()); + descrA = descrA->duplicateAppend("id", AttributeI::attributeType()); + + Descriptor::Ptr descrB = Descriptor::create(AttributeVec3f::attributeType()); + + descrB = descrB->duplicateAppend("density", AttributeS::attributeType()); + descrB = descrB->duplicateAppend("id", AttributeI::attributeType()); + + CPPUNIT_ASSERT_EQUAL(descrA->size(), descrB->size()); + + CPPUNIT_ASSERT(*descrA == *descrB); + + descrB->setGroup("test", size_t(0)); + descrB->setGroup("test2", size_t(1)); + + Descriptor descrC(*descrB); + + CPPUNIT_ASSERT(descrB->hasSameAttributes(descrC)); + CPPUNIT_ASSERT(descrC.hasGroup("test")); + CPPUNIT_ASSERT(*descrB == descrC); + + descrC.dropGroup("test"); + descrC.dropGroup("test2"); + + CPPUNIT_ASSERT(!descrB->hasSameAttributes(descrC)); + CPPUNIT_ASSERT(!descrC.hasGroup("test")); + CPPUNIT_ASSERT(*descrB != descrC); + + descrC.setGroup("test2", size_t(1)); + descrC.setGroup("test3", size_t(0)); + + CPPUNIT_ASSERT(!descrB->hasSameAttributes(descrC)); + + descrC.dropGroup("test3"); + descrC.setGroup("test", size_t(0)); + + CPPUNIT_ASSERT(descrB->hasSameAttributes(descrC)); + + Descriptor::Inserter names; + names.add("P", AttributeVec3f::attributeType()); + names.add("density", AttributeS::attributeType()); + names.add("id", AttributeI::attributeType()); + + // rebuild NameAndTypeVec + + Descriptor::NameAndTypeVec rebuildNames; + descrA->appendTo(rebuildNames); + + CPPUNIT_ASSERT_EQUAL(rebuildNames.size(), names.vec.size()); + + for (auto itA = rebuildNames.cbegin(), itB = names.vec.cbegin(), + itEndA = rebuildNames.cend(), itEndB = names.vec.cend(); + itA != itEndA && itB != itEndB; ++itA, ++itB) { + CPPUNIT_ASSERT_EQUAL(itA->name, itB->name); + CPPUNIT_ASSERT_EQUAL(itA->type.first, itB->type.first); + CPPUNIT_ASSERT_EQUAL(itA->type.second, itB->type.second); + } + + Descriptor::NameToPosMap groupMap; + openvdb::MetaMap metadata; + + // hasSameAttributes (note: uses protected create methods) + { + Descriptor::Ptr descr1 = Descriptor::create(Descriptor::Inserter() + .add("P", AttributeVec3f::attributeType()) + .add("test", AttributeI::attributeType()) + .add("id", AttributeI::attributeType()) + .vec, groupMap, metadata); + + // test same names with different types, should be false + Descriptor::Ptr descr2 = Descriptor::create(Descriptor::Inserter() + .add("P", AttributeVec3f::attributeType()) + .add("test", AttributeS::attributeType()) + .add("id", AttributeI::attributeType()) + .vec, groupMap, metadata); + + CPPUNIT_ASSERT(!descr1->hasSameAttributes(*descr2)); + + // test different names, should be false + Descriptor::Ptr descr3 = Descriptor::create(Descriptor::Inserter() + .add("P", AttributeVec3f::attributeType()) + .add("test2", AttributeI::attributeType()) + .add("id", AttributeI::attributeType()) + .vec, groupMap, metadata); + + CPPUNIT_ASSERT(!descr1->hasSameAttributes(*descr3)); + + // test same names and types but different order, should be true + Descriptor::Ptr descr4 = Descriptor::create(Descriptor::Inserter() + .add("test", AttributeI::attributeType()) + .add("id", AttributeI::attributeType()) + .add("P", AttributeVec3f::attributeType()) + .vec, groupMap, metadata); + + CPPUNIT_ASSERT(descr1->hasSameAttributes(*descr4)); + } + + { // Test uniqueName + Descriptor::Inserter names2; + Descriptor::Ptr emptyDescr = Descriptor::create(AttributeVec3f::attributeType()); + const openvdb::Name uniqueNameEmpty = emptyDescr->uniqueName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueNameEmpty, openvdb::Name("test")); + + names2.add("test", AttributeS::attributeType()); + names2.add("test1", AttributeI::attributeType()); + + Descriptor::Ptr descr1 = Descriptor::create(names2.vec, groupMap, metadata); + + const openvdb::Name uniqueName1 = descr1->uniqueName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueName1, openvdb::Name("test0")); + + Descriptor::Ptr descr2 = descr1->duplicateAppend(uniqueName1, AttributeI::attributeType()); + + const openvdb::Name uniqueName2 = descr2->uniqueName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueName2, openvdb::Name("test2")); + } + + { // Test name validity + + CPPUNIT_ASSERT(Descriptor::validName("test1")); + CPPUNIT_ASSERT(Descriptor::validName("abc_def")); + CPPUNIT_ASSERT(Descriptor::validName("abc|def")); + CPPUNIT_ASSERT(Descriptor::validName("abc:def")); + + CPPUNIT_ASSERT(!Descriptor::validName("")); + CPPUNIT_ASSERT(!Descriptor::validName("test1!")); + CPPUNIT_ASSERT(!Descriptor::validName("abc=def")); + CPPUNIT_ASSERT(!Descriptor::validName("abc def")); + CPPUNIT_ASSERT(!Descriptor::validName("abc*def")); + } + + { // Test enforcement of valid names + Descriptor::Ptr descr = Descriptor::create(Descriptor::Inserter().add( + "test1", AttributeS::attributeType()).vec, groupMap, metadata); + CPPUNIT_ASSERT_THROW(descr->rename("test1", "test1!"), openvdb::RuntimeError); + CPPUNIT_ASSERT_THROW(descr->setGroup("group1!", 1), openvdb::RuntimeError); + + Descriptor::NameAndType invalidAttr("test1!", AttributeS::attributeType()); + CPPUNIT_ASSERT_THROW(descr->duplicateAppend(invalidAttr.name, invalidAttr.type), + openvdb::RuntimeError); + + const openvdb::Index64 offset(0); + const openvdb::Index64 zeroLength(0); + const openvdb::Index64 oneLength(1); + + // write a stream with an invalid attribute + std::ostringstream attrOstr(std::ios_base::binary); + + attrOstr.write(reinterpret_cast(&oneLength), sizeof(openvdb::Index64)); + openvdb::writeString(attrOstr, invalidAttr.type.first); + openvdb::writeString(attrOstr, invalidAttr.type.second); + openvdb::writeString(attrOstr, invalidAttr.name); + attrOstr.write(reinterpret_cast(&offset), sizeof(openvdb::Index64)); + + attrOstr.write(reinterpret_cast(&zeroLength), sizeof(openvdb::Index64)); + + // write a stream with an invalid group + std::ostringstream groupOstr(std::ios_base::binary); + + groupOstr.write(reinterpret_cast(&zeroLength), sizeof(openvdb::Index64)); + + groupOstr.write(reinterpret_cast(&oneLength), sizeof(openvdb::Index64)); + openvdb::writeString(groupOstr, "group1!"); + groupOstr.write(reinterpret_cast(&offset), sizeof(openvdb::Index64)); + + // read the streams back + Descriptor inputDescr; + std::istringstream attrIstr(attrOstr.str(), std::ios_base::binary); + CPPUNIT_ASSERT_THROW(inputDescr.read(attrIstr), openvdb::IoError); + std::istringstream groupIstr(groupOstr.str(), std::ios_base::binary); + CPPUNIT_ASSERT_THROW(inputDescr.read(groupIstr), openvdb::IoError); + } + + { // Test empty string parse + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, ""); + CPPUNIT_ASSERT(testStringVector(includeNames)); + CPPUNIT_ASSERT(testStringVector(excludeNames)); + } + + { // Test single token parse + std::vector includeNames; + std::vector excludeNames; + bool includeAll = false; + Descriptor::parseNames(includeNames, excludeNames, includeAll, "group1"); + CPPUNIT_ASSERT(!includeAll); + CPPUNIT_ASSERT(testStringVector(includeNames, "group1")); + CPPUNIT_ASSERT(testStringVector(excludeNames)); + } + + { // Test parse with two include tokens + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "group1 group2"); + CPPUNIT_ASSERT(testStringVector(includeNames, "group1", "group2")); + CPPUNIT_ASSERT(testStringVector(excludeNames)); + } + + { // Test parse with one include and one ^ exclude token + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "group1 ^group2"); + CPPUNIT_ASSERT(testStringVector(includeNames, "group1")); + CPPUNIT_ASSERT(testStringVector(excludeNames, "group2")); + } + + { // Test parse with one include and one ! exclude token + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "group1 !group2"); + CPPUNIT_ASSERT(testStringVector(includeNames, "group1")); + CPPUNIT_ASSERT(testStringVector(excludeNames, "group2")); + } + + { // Test parse one include and one exclude backwards + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "^group1 group2"); + CPPUNIT_ASSERT(testStringVector(includeNames, "group2")); + CPPUNIT_ASSERT(testStringVector(excludeNames, "group1")); + } + + { // Test parse with two exclude tokens + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "^group1 ^group2"); + CPPUNIT_ASSERT(testStringVector(includeNames)); + CPPUNIT_ASSERT(testStringVector(excludeNames, "group1", "group2")); + } + + { // Test parse multiple includes and excludes at the same time + std::vector includeNames; + std::vector excludeNames; + Descriptor::parseNames(includeNames, excludeNames, "group1 ^group2 ^group3 group4"); + CPPUNIT_ASSERT(testStringVector(includeNames, "group1", "group4")); + CPPUNIT_ASSERT(testStringVector(excludeNames, "group2", "group3")); + } + + { // Test parse misplaced negate character failure + std::vector includeNames; + std::vector excludeNames; + CPPUNIT_ASSERT_THROW(Descriptor::parseNames(includeNames, excludeNames, "group1 ^ group2"), + openvdb::RuntimeError); + } + + { // Test parse (*) character + std::vector includeNames; + std::vector excludeNames; + bool includeAll = false; + Descriptor::parseNames(includeNames, excludeNames, includeAll, "*"); + CPPUNIT_ASSERT(includeAll); + CPPUNIT_ASSERT(testStringVector(includeNames)); + CPPUNIT_ASSERT(testStringVector(excludeNames)); + } + + { // Test parse invalid character failure + std::vector includeNames; + std::vector excludeNames; + CPPUNIT_ASSERT_THROW(Descriptor::parseNames(includeNames, excludeNames, "group$1"), + openvdb::RuntimeError); + } + + { // Test hasGroup(), setGroup(), dropGroup(), clearGroups() + Descriptor descr; + + CPPUNIT_ASSERT(!descr.hasGroup("test1")); + + descr.setGroup("test1", 1); + + CPPUNIT_ASSERT(descr.hasGroup("test1")); + CPPUNIT_ASSERT_EQUAL(descr.groupMap().at("test1"), size_t(1)); + + descr.setGroup("test5", 5); + + CPPUNIT_ASSERT(descr.hasGroup("test1")); + CPPUNIT_ASSERT(descr.hasGroup("test5")); + CPPUNIT_ASSERT_EQUAL(descr.groupMap().at("test1"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(descr.groupMap().at("test5"), size_t(5)); + + descr.setGroup("test1", 2); + + CPPUNIT_ASSERT(descr.hasGroup("test1")); + CPPUNIT_ASSERT(descr.hasGroup("test5")); + CPPUNIT_ASSERT_EQUAL(descr.groupMap().at("test1"), size_t(2)); + CPPUNIT_ASSERT_EQUAL(descr.groupMap().at("test5"), size_t(5)); + + descr.dropGroup("test1"); + + CPPUNIT_ASSERT(!descr.hasGroup("test1")); + CPPUNIT_ASSERT(descr.hasGroup("test5")); + + descr.setGroup("test3", 3); + + CPPUNIT_ASSERT(descr.hasGroup("test3")); + CPPUNIT_ASSERT(descr.hasGroup("test5")); + + descr.clearGroups(); + + CPPUNIT_ASSERT(!descr.hasGroup("test1")); + CPPUNIT_ASSERT(!descr.hasGroup("test3")); + CPPUNIT_ASSERT(!descr.hasGroup("test5")); + } + + // I/O test + + std::ostringstream ostr(std::ios_base::binary); + descrA->write(ostr); + + Descriptor inputDescr; + + std::istringstream istr(ostr.str(), std::ios_base::binary); + inputDescr.read(istr); + + CPPUNIT_ASSERT_EQUAL(descrA->size(), inputDescr.size()); + CPPUNIT_ASSERT(*descrA == inputDescr); +} + + +void +TestAttributeSet::testAttributeSet() +{ + // Define and register some common attribute types + using AttributeS = TypedAttributeArray; + using AttributeB = TypedAttributeArray; + using AttributeI = TypedAttributeArray; + using AttributeL = TypedAttributeArray; + using AttributeVec3s = TypedAttributeArray; + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::NameToPosMap groupMap; + openvdb::MetaMap metadata; + + { // construction + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + descr = descr->duplicateAppend("test", AttributeI::attributeType()); + AttributeSet attrSet(descr); + CPPUNIT_ASSERT_EQUAL(attrSet.size(), size_t(2)); + + Descriptor::Ptr newDescr = Descriptor::create(AttributeVec3s::attributeType()); + CPPUNIT_ASSERT_THROW(attrSet.resetDescriptor(newDescr), openvdb::LookupError); + CPPUNIT_ASSERT_NO_THROW( + attrSet.resetDescriptor(newDescr, /*allowMismatchingDescriptors=*/true)); + } + + { // transfer of flags on construction + AttributeSet attrSet(Descriptor::create(AttributeVec3s::attributeType())); + AttributeArray::Ptr array1 = attrSet.appendAttribute( + "hidden", AttributeS::attributeType()); + array1->setHidden(true); + AttributeArray::Ptr array2 = attrSet.appendAttribute( + "transient", AttributeS::attributeType()); + array2->setTransient(true); + AttributeSet attrSet2(attrSet, size_t(1)); + CPPUNIT_ASSERT(attrSet2.getConst("hidden")->isHidden()); + CPPUNIT_ASSERT(attrSet2.getConst("transient")->isTransient()); + } + + // construct + + { // invalid append + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet invalidAttrSetA(descr, /*arrayLength=*/50); + + CPPUNIT_ASSERT_THROW(invalidAttrSetA.appendAttribute("id", AttributeI::attributeType(), + /*stride=*/0, /*constantStride=*/true), openvdb::ValueError); + CPPUNIT_ASSERT(invalidAttrSetA.find("id") == AttributeSet::INVALID_POS); + CPPUNIT_ASSERT_THROW(invalidAttrSetA.appendAttribute("id", AttributeI::attributeType(), + /*stride=*/49, /*constantStride=*/false), openvdb::ValueError); + CPPUNIT_ASSERT_NO_THROW( + invalidAttrSetA.appendAttribute("testStride1", AttributeI::attributeType(), + /*stride=*/50, /*constantStride=*/false)); + CPPUNIT_ASSERT_NO_THROW( + invalidAttrSetA.appendAttribute("testStride2", AttributeI::attributeType(), + /*stride=*/51, /*constantStride=*/false)); + } + + { // copy construction with varying attribute types and strides + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet attrSet(descr, /*arrayLength=*/50); + + attrSet.appendAttribute("float1", AttributeS::attributeType(), /*stride=*/1); + attrSet.appendAttribute("int1", AttributeI::attributeType(), /*stride=*/1); + attrSet.appendAttribute("float3", AttributeS::attributeType(), /*stride=*/3); + attrSet.appendAttribute("vector", AttributeVec3s::attributeType(), /*stride=*/1); + attrSet.appendAttribute("vector3", AttributeVec3s::attributeType(), /*stride=*/3); + attrSet.appendAttribute("bool100", AttributeB::attributeType(), /*stride=*/100); + attrSet.appendAttribute("boolDynamic", AttributeB::attributeType(), /*size=*/100, false); + attrSet.appendAttribute("intDynamic", AttributeI::attributeType(), /*size=*/300, false); + + CPPUNIT_ASSERT_EQUAL(std::string("float"), attrSet.getConst("float1")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("int32"), attrSet.getConst("int1")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("float"), attrSet.getConst("float3")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("vec3s"), attrSet.getConst("vector")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("vec3s"), attrSet.getConst("vector3")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("bool"), attrSet.getConst("bool100")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("bool"), attrSet.getConst("boolDynamic")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("int32"), attrSet.getConst("intDynamic")->type().first); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet.getConst("float1")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet.getConst("int1")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(3), attrSet.getConst("float3")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet.getConst("vector")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(3), attrSet.getConst("vector3")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet.getConst("bool100")->stride()); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(50), attrSet.getConst("float1")->size()); + + // error as the new length is greater than the data size of the + // 'boolDynamic' attribute + CPPUNIT_ASSERT_THROW(AttributeSet(attrSet, /*arrayLength=*/200), openvdb::ValueError); + + AttributeSet attrSet2(attrSet, /*arrayLength=*/100); + + CPPUNIT_ASSERT_EQUAL(std::string("float"), attrSet2.getConst("float1")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("int32"), attrSet2.getConst("int1")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("float"), attrSet2.getConst("float3")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("vec3s"), attrSet2.getConst("vector")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("vec3s"), attrSet2.getConst("vector3")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("bool"), attrSet2.getConst("bool100")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("bool"), attrSet2.getConst("boolDynamic")->type().first); + CPPUNIT_ASSERT_EQUAL(std::string("int32"), attrSet2.getConst("intDynamic")->type().first); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet2.getConst("float1")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet2.getConst("int1")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(3), attrSet2.getConst("float3")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), attrSet2.getConst("vector")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(3), attrSet2.getConst("vector3")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet2.getConst("bool100")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), attrSet2.getConst("boolDynamic")->stride()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), attrSet2.getConst("intDynamic")->stride()); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet2.getConst("float1")->size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet2.getConst("boolDynamic")->size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet2.getConst("intDynamic")->size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(100), attrSet2.getConst("boolDynamic")->dataSize()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(300), attrSet2.getConst("intDynamic")->dataSize()); + } + + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet attrSetA(descr, /*arrayLength=*/50); + + attrSetA.appendAttribute("id", AttributeI::attributeType()); + + // check equality against duplicate array + + Descriptor::Ptr descr2 = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet attrSetA2(descr2, /*arrayLength=*/50); + + attrSetA2.appendAttribute("id", AttributeI::attributeType()); + + CPPUNIT_ASSERT(attrSetA == attrSetA2); + + // expand uniform values and check equality + + attrSetA.get("P")->expand(); + attrSetA2.get("P")->expand(); + + CPPUNIT_ASSERT(attrSetA == attrSetA2); + + CPPUNIT_ASSERT_EQUAL(size_t(2), attrSetA.size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(50), attrSetA.get(0)->size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(50), attrSetA.get(1)->size()); + + { // copy + CPPUNIT_ASSERT(!attrSetA.isShared(0)); + CPPUNIT_ASSERT(!attrSetA.isShared(1)); + + AttributeSet attrSetB(attrSetA); + + CPPUNIT_ASSERT(matchingAttributeSets(attrSetA, attrSetB)); + + CPPUNIT_ASSERT(attrSetA.isShared(0)); + CPPUNIT_ASSERT(attrSetA.isShared(1)); + CPPUNIT_ASSERT(attrSetB.isShared(0)); + CPPUNIT_ASSERT(attrSetB.isShared(1)); + + attrSetB.makeUnique(0); + attrSetB.makeUnique(1); + + CPPUNIT_ASSERT(matchingAttributeSets(attrSetA, attrSetB)); + + CPPUNIT_ASSERT(!attrSetA.isShared(0)); + CPPUNIT_ASSERT(!attrSetA.isShared(1)); + CPPUNIT_ASSERT(!attrSetB.isShared(0)); + CPPUNIT_ASSERT(!attrSetB.isShared(1)); + } + + { // attribute insertion + AttributeSet attrSetB(attrSetA); + + attrSetB.makeUnique(0); + attrSetB.makeUnique(1); + + Descriptor::Ptr targetDescr = Descriptor::create(Descriptor::Inserter() + .add("P", AttributeVec3s::attributeType()) + .add("id", AttributeI::attributeType()) + .add("test", AttributeS::attributeType()) + .vec, groupMap, metadata); + + Descriptor::Ptr descrB = + attrSetB.descriptor().duplicateAppend("test", AttributeS::attributeType()); + + // should throw if we attempt to add the same attribute name but a different type + CPPUNIT_ASSERT_THROW( + descrB->insert("test", AttributeI::attributeType()), openvdb::KeyError); + + // shouldn't throw if we attempt to add the same attribute name and type + CPPUNIT_ASSERT_NO_THROW(descrB->insert("test", AttributeS::attributeType())); + + openvdb::TypedMetadata defaultValueTest(5); + + // add a default value of the wrong type + + openvdb::TypedMetadata defaultValueInt(5); + + CPPUNIT_ASSERT_THROW(descrB->setDefaultValue("test", defaultValueInt), openvdb::TypeError); + + // add a default value with a name that does not exist + + CPPUNIT_ASSERT_THROW(descrB->setDefaultValue("badname", defaultValueTest), + openvdb::LookupError); + + // add a default value for test of 5 + + descrB->setDefaultValue("test", defaultValueTest); + + { + openvdb::Metadata::Ptr meta = descrB->getMetadata()["default:test"]; + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT(meta->typeName() == "float"); + } + + // ensure attribute order persists + + CPPUNIT_ASSERT_EQUAL(descrB->find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(descrB->find("id"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(descrB->find("test"), size_t(2)); + + { // simple method + AttributeSet attrSetC(attrSetB); + + attrSetC.makeUnique(0); + attrSetC.makeUnique(1); + + attrSetC.appendAttribute("test", AttributeS::attributeType(), /*stride=*/1, + /*constantStride=*/true, defaultValueTest.copy()); + + CPPUNIT_ASSERT(attributeSetMatchesDescriptor(attrSetC, *descrB)); + } + { // descriptor-sharing method + AttributeSet attrSetC(attrSetB); + + attrSetC.makeUnique(0); + attrSetC.makeUnique(1); + + attrSetC.appendAttribute(attrSetC.descriptor(), descrB, size_t(2)); + + CPPUNIT_ASSERT(attributeSetMatchesDescriptor(attrSetC, *targetDescr)); + } + + // add a default value for pos of (1, 3, 1) + + openvdb::TypedMetadata defaultValuePos( + AttributeVec3s::ValueType(1, 3, 1)); + + descrB->setDefaultValue("P", defaultValuePos); + + { + openvdb::Metadata::Ptr meta = descrB->getMetadata()["default:P"]; + CPPUNIT_ASSERT(meta); + CPPUNIT_ASSERT(meta->typeName() == "vec3s"); + CPPUNIT_ASSERT_EQUAL(descrB->getDefaultValue("P"), + defaultValuePos.value()); + } + + // remove default value + + CPPUNIT_ASSERT(descrB->hasDefaultValue("test")); + + descrB->removeDefaultValue("test"); + + CPPUNIT_ASSERT(!descrB->hasDefaultValue("test")); + } + + { // attribute removal + + Descriptor::Ptr descr1 = Descriptor::create(AttributeVec3s::attributeType()); + + AttributeSet attrSetB(descr1, /*arrayLength=*/50); + + attrSetB.appendAttribute("test", AttributeI::attributeType()); + attrSetB.appendAttribute("id", AttributeL::attributeType()); + attrSetB.appendAttribute("test2", AttributeI::attributeType()); + attrSetB.appendAttribute("id2", AttributeL::attributeType()); + attrSetB.appendAttribute("test3", AttributeI::attributeType()); + + descr1 = attrSetB.descriptorPtr(); + + Descriptor::Ptr targetDescr = Descriptor::create(AttributeVec3s::attributeType()); + + targetDescr = targetDescr->duplicateAppend("id", AttributeL::attributeType()); + targetDescr = targetDescr->duplicateAppend("id2", AttributeL::attributeType()); + + // add some default values + + openvdb::TypedMetadata defaultOne(AttributeI::ValueType(1)); + + descr1->setDefaultValue("test", defaultOne); + descr1->setDefaultValue("test2", defaultOne); + + openvdb::TypedMetadata defaultThree(AttributeL::ValueType(3)); + + descr1->setDefaultValue("id", defaultThree); + + std::vector toDrop{ + descr1->find("test"), descr1->find("test2"), descr1->find("test3")}; + + CPPUNIT_ASSERT_EQUAL(toDrop[0], size_t(1)); + CPPUNIT_ASSERT_EQUAL(toDrop[1], size_t(3)); + CPPUNIT_ASSERT_EQUAL(toDrop[2], size_t(5)); + + { // simple method + AttributeSet attrSetC(attrSetB); + + attrSetC.makeUnique(0); + attrSetC.makeUnique(1); + attrSetC.makeUnique(2); + attrSetC.makeUnique(3); + + CPPUNIT_ASSERT(attrSetC.descriptor().getMetadata()["default:test"]); + + attrSetC.dropAttributes(toDrop); + + CPPUNIT_ASSERT_EQUAL(attrSetC.size(), size_t(3)); + + CPPUNIT_ASSERT(attributeSetMatchesDescriptor(attrSetC, *targetDescr)); + + // check default values have been removed for the relevant attributes + + const Descriptor& descrC = attrSetC.descriptor(); + + CPPUNIT_ASSERT(!descrC.getMetadata()["default:test"]); + CPPUNIT_ASSERT(!descrC.getMetadata()["default:test2"]); + CPPUNIT_ASSERT(!descrC.getMetadata()["default:test3"]); + + CPPUNIT_ASSERT(descrC.getMetadata()["default:id"]); + } + + { // reverse removal order + std::vector toDropReverse{ + descr1->find("test3"), descr1->find("test2"), descr1->find("test")}; + + AttributeSet attrSetC(attrSetB); + + attrSetC.makeUnique(0); + attrSetC.makeUnique(1); + attrSetC.makeUnique(2); + attrSetC.makeUnique(3); + + attrSetC.dropAttributes(toDropReverse); + + CPPUNIT_ASSERT_EQUAL(attrSetC.size(), size_t(3)); + + CPPUNIT_ASSERT(attributeSetMatchesDescriptor(attrSetC, *targetDescr)); + } + + { // descriptor-sharing method + AttributeSet attrSetC(attrSetB); + + attrSetC.makeUnique(0); + attrSetC.makeUnique(1); + attrSetC.makeUnique(2); + attrSetC.makeUnique(3); + + Descriptor::Ptr descrB = attrSetB.descriptor().duplicateDrop(toDrop); + + attrSetC.dropAttributes(toDrop, attrSetC.descriptor(), descrB); + + CPPUNIT_ASSERT_EQUAL(attrSetC.size(), size_t(3)); + + CPPUNIT_ASSERT(attributeSetMatchesDescriptor(attrSetC, *targetDescr)); + } + + { // test duplicateDrop configures group mapping + AttributeSet attrSetC; + + const size_t GROUP_BITS = sizeof(GroupType) * CHAR_BIT; + + attrSetC.appendAttribute("test1", AttributeI::attributeType()); + attrSetC.appendAttribute("__group1", GroupAttributeArray::attributeType()); + attrSetC.appendAttribute("test2", AttributeI::attributeType()); + attrSetC.appendAttribute("__group2", GroupAttributeArray::attributeType()); + attrSetC.appendAttribute("__group3", GroupAttributeArray::attributeType()); + attrSetC.appendAttribute("__group4", GroupAttributeArray::attributeType()); + + // 5 attributes exist - append a group as the sixth and then drop + + Descriptor::Ptr descriptor = attrSetC.descriptorPtr(); + size_t count = descriptor->count(GroupAttributeArray::attributeType()); + CPPUNIT_ASSERT_EQUAL(count, size_t(4)); + + descriptor->setGroup("test_group1", /*offset*/0); // __group1 + descriptor->setGroup("test_group2", /*offset=8*/GROUP_BITS); // __group2 + descriptor->setGroup("test_group3", /*offset=16*/GROUP_BITS*2); // __group3 + descriptor->setGroup("test_group4", /*offset=28*/GROUP_BITS*3 + GROUP_BITS/2); // __group4 + + descriptor = descriptor->duplicateDrop({ 1, 2, 3 }); + count = descriptor->count(GroupAttributeArray::attributeType()); + CPPUNIT_ASSERT_EQUAL(count, size_t(2)); + + CPPUNIT_ASSERT_EQUAL(size_t(3), descriptor->size()); + CPPUNIT_ASSERT(!descriptor->hasGroup("test_group1")); + CPPUNIT_ASSERT(!descriptor->hasGroup("test_group2")); + CPPUNIT_ASSERT(descriptor->hasGroup("test_group3")); + CPPUNIT_ASSERT(descriptor->hasGroup("test_group4")); + + CPPUNIT_ASSERT_EQUAL(descriptor->find("__group1"), size_t(AttributeSet::INVALID_POS)); + CPPUNIT_ASSERT_EQUAL(descriptor->find("__group2"), size_t(AttributeSet::INVALID_POS)); + CPPUNIT_ASSERT_EQUAL(descriptor->find("__group3"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(descriptor->find("__group4"), size_t(2)); + + CPPUNIT_ASSERT_EQUAL(descriptor->groupOffset("test_group3"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(descriptor->groupOffset("test_group4"), size_t(GROUP_BITS + GROUP_BITS/2)); + } + } + + // replace existing arrays + + // this replace call should not take effect since the new attribute + // array type does not match with the descriptor type for the given position. + AttributeArray::Ptr floatAttr(new AttributeS(15)); + CPPUNIT_ASSERT(attrSetA.replace(1, floatAttr) == AttributeSet::INVALID_POS); + + AttributeArray::Ptr intAttr(new AttributeI(10)); + CPPUNIT_ASSERT(attrSetA.replace(1, intAttr) != AttributeSet::INVALID_POS); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(10), attrSetA.get(1)->size()); + + { // reorder attribute set + Descriptor::Ptr descr1 = Descriptor::create(AttributeVec3s::attributeType()); + + AttributeSet attrSetA1(descr1); + + attrSetA1.appendAttribute("test", AttributeI::attributeType()); + attrSetA1.appendAttribute("id", AttributeI::attributeType()); + attrSetA1.appendAttribute("test2", AttributeI::attributeType()); + + descr1 = attrSetA1.descriptorPtr(); + + Descriptor::Ptr descr2x = Descriptor::create(AttributeVec3s::attributeType()); + + AttributeSet attrSetB1(descr2x); + + attrSetB1.appendAttribute("test2", AttributeI::attributeType()); + attrSetB1.appendAttribute("test", AttributeI::attributeType()); + attrSetB1.appendAttribute("id", AttributeI::attributeType()); + + CPPUNIT_ASSERT(attrSetA1 != attrSetB1); + + attrSetB1.reorderAttributes(descr1); + + CPPUNIT_ASSERT(attrSetA1 == attrSetB1); + } + + { // metadata test + Descriptor::Ptr descr1A = Descriptor::create(AttributeVec3s::attributeType()); + + Descriptor::Ptr descr2A = Descriptor::create(AttributeVec3s::attributeType()); + + openvdb::MetaMap& meta = descr1A->getMetadata(); + meta.insertMeta("exampleMeta", openvdb::FloatMetadata(2.0)); + + AttributeSet attrSetA1(descr1A); + AttributeSet attrSetB1(descr2A); + AttributeSet attrSetC1(attrSetA1); + + CPPUNIT_ASSERT(attrSetA1 != attrSetB1); + CPPUNIT_ASSERT(attrSetA1 == attrSetC1); + } + + // add some metadata and register the type + + openvdb::MetaMap& meta = attrSetA.descriptor().getMetadata(); + meta.insertMeta("exampleMeta", openvdb::FloatMetadata(2.0)); + + { // I/O test + std::ostringstream ostr(std::ios_base::binary); + attrSetA.write(ostr); + + AttributeSet attrSetB; + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrSetB.read(istr); + + CPPUNIT_ASSERT(matchingAttributeSets(attrSetA, attrSetB)); + } + + { // I/O transient test + AttributeArray* array = attrSetA.get(0); + array->setTransient(true); + + std::ostringstream ostr(std::ios_base::binary); + attrSetA.write(ostr); + + AttributeSet attrSetB; + std::istringstream istr(ostr.str(), std::ios_base::binary); + attrSetB.read(istr); + + // ensures transient attribute is not written out + + CPPUNIT_ASSERT_EQUAL(attrSetB.size(), size_t(1)); + + std::ostringstream ostr2(std::ios_base::binary); + attrSetA.write(ostr2, /*transient=*/true); + + AttributeSet attrSetC; + std::istringstream istr2(ostr2.str(), std::ios_base::binary); + attrSetC.read(istr2); + + CPPUNIT_ASSERT_EQUAL(attrSetC.size(), size_t(2)); + } +} + + +void +TestAttributeSet::testAttributeSetGroups() +{ + // Define and register some common attribute types + using AttributeI = TypedAttributeArray; + using AttributeVec3s = TypedAttributeArray; + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::NameToPosMap groupMap; + openvdb::MetaMap metadata; + + { // construct + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet attrSet(descr, /*arrayLength=*/3); + attrSet.appendAttribute("id", AttributeI::attributeType()); + CPPUNIT_ASSERT(!descr->hasGroup("test1")); + } + + { // group offset + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + + descr->setGroup("test1", 1); + + CPPUNIT_ASSERT(descr->hasGroup("test1")); + CPPUNIT_ASSERT_EQUAL(descr->groupMap().at("test1"), size_t(1)); + + AttributeSet attrSet(descr); + + CPPUNIT_ASSERT_EQUAL(attrSet.groupOffset("test1"), size_t(1)); + } + + { // group index + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + + AttributeSet attrSet(descr); + + attrSet.appendAttribute("test", AttributeI::attributeType()); + attrSet.appendAttribute("test2", AttributeI::attributeType()); + attrSet.appendAttribute("group1", GroupAttributeArray::attributeType()); + attrSet.appendAttribute("test3", AttributeI::attributeType()); + attrSet.appendAttribute("group2", GroupAttributeArray::attributeType()); + attrSet.appendAttribute("test4", AttributeI::attributeType()); + attrSet.appendAttribute("group3", GroupAttributeArray::attributeType()); + + descr = attrSet.descriptorPtr(); + + std::stringstream ss; + for (int i = 0; i < 17; i++) { + ss.str(""); + ss << "test" << i; + descr->setGroup(ss.str(), i); + } + + Descriptor::GroupIndex index15 = attrSet.groupIndex(15); + CPPUNIT_ASSERT_EQUAL(index15.first, size_t(5)); + CPPUNIT_ASSERT_EQUAL(index15.second, uint8_t(7)); + + CPPUNIT_ASSERT_EQUAL(attrSet.groupOffset(index15), size_t(15)); + CPPUNIT_ASSERT_EQUAL(attrSet.groupOffset("test15"), size_t(15)); + + Descriptor::GroupIndex index15b = attrSet.groupIndex("test15"); + CPPUNIT_ASSERT_EQUAL(index15b.first, size_t(5)); + CPPUNIT_ASSERT_EQUAL(index15b.second, uint8_t(7)); + + Descriptor::GroupIndex index16 = attrSet.groupIndex(16); + CPPUNIT_ASSERT_EQUAL(index16.first, size_t(7)); + CPPUNIT_ASSERT_EQUAL(index16.second, uint8_t(0)); + + CPPUNIT_ASSERT_EQUAL(attrSet.groupOffset(index16), size_t(16)); + CPPUNIT_ASSERT_EQUAL(attrSet.groupOffset("test16"), size_t(16)); + + Descriptor::GroupIndex index16b = attrSet.groupIndex("test16"); + CPPUNIT_ASSERT_EQUAL(index16b.first, size_t(7)); + CPPUNIT_ASSERT_EQUAL(index16b.second, uint8_t(0)); + + // check out of range exception + + CPPUNIT_ASSERT_NO_THROW(attrSet.groupIndex(23)); + CPPUNIT_ASSERT_THROW(attrSet.groupIndex(24), LookupError); + } + + { // group unique name + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + const openvdb::Name uniqueNameEmpty = descr->uniqueGroupName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueNameEmpty, openvdb::Name("test")); + + descr->setGroup("test", 1); + descr->setGroup("test1", 2); + + const openvdb::Name uniqueName1 = descr->uniqueGroupName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueName1, openvdb::Name("test0")); + descr->setGroup(uniqueName1, 3); + + const openvdb::Name uniqueName2 = descr->uniqueGroupName("test"); + CPPUNIT_ASSERT_EQUAL(uniqueName2, openvdb::Name("test2")); + } + + { // group rename + Descriptor::Ptr descr = Descriptor::create(AttributeVec3s::attributeType()); + descr->setGroup("test", 1); + descr->setGroup("test1", 2); + + size_t pos = descr->renameGroup("test", "test1"); + CPPUNIT_ASSERT(pos == AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(descr->hasGroup("test")); + CPPUNIT_ASSERT(descr->hasGroup("test1")); + + pos = descr->renameGroup("test", "test2"); + CPPUNIT_ASSERT_EQUAL(pos, size_t(1)); + CPPUNIT_ASSERT(!descr->hasGroup("test")); + CPPUNIT_ASSERT(descr->hasGroup("test1")); + CPPUNIT_ASSERT(descr->hasGroup("test2")); + } +} diff --git a/openvdb/unittest/TestBBox.cc b/openvdb/unittest/TestBBox.cc new file mode 100644 index 00000000..8d36c499 --- /dev/null +++ b/openvdb/unittest/TestBBox.cc @@ -0,0 +1,95 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include + +typedef float Real; + +class TestBBox: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestBBox); + CPPUNIT_TEST(testBBox); + CPPUNIT_TEST(testCenter); + CPPUNIT_TEST(testExtent); + CPPUNIT_TEST_SUITE_END(); + + void testBBox(); + void testCenter(); + void testExtent(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestBBox); + + +void +TestBBox::testBBox() +{ + typedef openvdb::Vec3R Vec3R; + typedef openvdb::math::BBox BBoxType; + + { + BBoxType B(Vec3R(1,1,1),Vec3R(2,2,2)); + + CPPUNIT_ASSERT(B.isSorted()); + CPPUNIT_ASSERT(B.isInside(Vec3R(1.5,2,2))); + CPPUNIT_ASSERT(!B.isInside(Vec3R(2,3,2))); + B.expand(Vec3R(3,3,3)); + CPPUNIT_ASSERT(B.isInside(Vec3R(3,3,3))); + } + + { + BBoxType B; + CPPUNIT_ASSERT(B.empty()); + const Vec3R expected(1); + B.expand(expected); + CPPUNIT_ASSERT_EQUAL(expected, B.min()); + CPPUNIT_ASSERT_EQUAL(expected, B.max()); + } +} + + +void +TestBBox::testCenter() +{ + using namespace openvdb::math; + + const Vec3 expected(1.5); + + BBox fbox(openvdb::Vec3R(1.0), openvdb::Vec3R(2.0)); + CPPUNIT_ASSERT_EQUAL(expected, fbox.getCenter()); + + BBox ibox(openvdb::Vec3i(1), openvdb::Vec3i(2)); + CPPUNIT_ASSERT_EQUAL(expected, ibox.getCenter()); + + openvdb::CoordBBox cbox(openvdb::Coord(1), openvdb::Coord(2)); + CPPUNIT_ASSERT_EQUAL(expected, cbox.getCenter()); +} + +void +TestBBox::testExtent() +{ + typedef openvdb::Vec3R Vec3R; + typedef openvdb::math::BBox BBoxType; + + { + BBoxType B(Vec3R(-20,0,1),Vec3R(2,2,2)); + CPPUNIT_ASSERT_EQUAL(size_t(2), B.minExtent()); + CPPUNIT_ASSERT_EQUAL(size_t(0), B.maxExtent()); + } + { + BBoxType B(Vec3R(1,0,1),Vec3R(2,21,20)); + CPPUNIT_ASSERT_EQUAL(size_t(0), B.minExtent()); + CPPUNIT_ASSERT_EQUAL(size_t(1), B.maxExtent()); + } + { + BBoxType B(Vec3R(1,0,1),Vec3R(3,1.5,20)); + CPPUNIT_ASSERT_EQUAL(size_t(1), B.minExtent()); + CPPUNIT_ASSERT_EQUAL(size_t(2), B.maxExtent()); + } +} diff --git a/openvdb/unittest/TestClip.cc b/openvdb/unittest/TestClip.cc new file mode 100644 index 00000000..13b739bf --- /dev/null +++ b/openvdb/unittest/TestClip.cc @@ -0,0 +1,248 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include // for math::NonlinearFrustumMap +#include + + +// See also TestGrid::testClipping() +class TestClip: public CppUnit::TestFixture +{ +public: + static const openvdb::CoordBBox kCubeBBox, kInnerBBox; + + TestClip(): mCube{ + []() { + auto cube = openvdb::FloatGrid{0.0f}; + cube.fill(kCubeBBox, /*value=*/5.0f, /*active=*/true); + return cube; + }()} + {} + + void setUp() override; + void tearDown() override; + + CPPUNIT_TEST_SUITE(TestClip); + CPPUNIT_TEST(testBBox); + CPPUNIT_TEST(testFrustum); + CPPUNIT_TEST(testMaskGrid); + CPPUNIT_TEST(testBoolMask); + CPPUNIT_TEST(testInvertedBoolMask); + CPPUNIT_TEST(testNonBoolMask); + CPPUNIT_TEST(testInvertedNonBoolMask); + CPPUNIT_TEST_SUITE_END(); + + void testBBox(); + void testFrustum(); + void testMaskGrid(); + void testBoolMask(); + void testInvertedBoolMask(); + void testNonBoolMask(); + void testInvertedNonBoolMask(); + +private: + void validate(const openvdb::FloatGrid&); + + const openvdb::FloatGrid mCube; +}; + +const openvdb::CoordBBox + // The volume to be clipped is a 21 x 21 x 21 solid cube. + TestClip::kCubeBBox{openvdb::Coord{-10}, openvdb::Coord{10}}, + // The clipping mask is a 1 x 1 x 13 segment extending along the Z axis inside the cube. + TestClip::kInnerBBox{openvdb::Coord{4, 4, -6}, openvdb::Coord{4, 4, 6}}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestClip); + + +//////////////////////////////////////// + + +void +TestClip::setUp() +{ + openvdb::initialize(); +} + +void +TestClip::tearDown() +{ + openvdb::uninitialize(); +} + + +void +TestClip::validate(const openvdb::FloatGrid& clipped) +{ + using namespace openvdb; + + const CoordBBox bbox = clipped.evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.min().x(), bbox.min().x()); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.min().y(), bbox.min().y()); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.min().z(), bbox.min().z()); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.max().x(), bbox.max().x()); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.max().y(), bbox.max().y()); + CPPUNIT_ASSERT_EQUAL(kInnerBBox.max().z(), bbox.max().z()); + CPPUNIT_ASSERT_EQUAL(6 + 6 + 1, int(clipped.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(2, int(clipped.constTree().leafCount())); + + FloatGrid::ConstAccessor acc = clipped.getConstAccessor(); + const float bg = clipped.background(); + Coord xyz; + int &x = xyz[0], &y = xyz[1], &z = xyz[2]; + for (x = kCubeBBox.min().x(); x <= kCubeBBox.max().x(); ++x) { + for (y = kCubeBBox.min().y(); y <= kCubeBBox.max().y(); ++y) { + for (z = kCubeBBox.min().z(); z <= kCubeBBox.max().z(); ++z) { + if (x == 4 && y == 4 && z >= -6 && z <= 6) { + CPPUNIT_ASSERT_EQUAL(5.f, acc.getValue(Coord(4, 4, z))); + } else { + CPPUNIT_ASSERT_EQUAL(bg, acc.getValue(Coord(x, y, z))); + } + } + } + } +} + + +//////////////////////////////////////// + + +// Test clipping against a bounding box. +void +TestClip::testBBox() +{ + using namespace openvdb; + BBoxd clipBox(Vec3d(4.0, 4.0, -6.0), Vec3d(4.9, 4.9, 6.0)); + FloatGrid::Ptr clipped = tools::clip(mCube, clipBox); + validate(*clipped); +} + + +// Test clipping against a camera frustum. +void +TestClip::testFrustum() +{ + using namespace openvdb; + + const auto d = double(kCubeBBox.max().z()); + const math::NonlinearFrustumMap frustum{ + /*position=*/Vec3d{0.0, 0.0, 5.0 * d}, + /*direction=*/Vec3d{0.0, 0.0, -1.0}, + /*up=*/Vec3d{0.0, d / 2.0, 0.0}, + /*aspect=*/1.0, + /*near=*/4.0 * d + 1.0, + /*depth=*/kCubeBBox.dim().z() - 2.0, + /*x_count=*/100, + /*z_count=*/100}; + const auto frustumIndexBBox = frustum.getBBox(); + + { + auto clipped = tools::clip(mCube, frustum); + + const auto bbox = clipped->evalActiveVoxelBoundingBox(); + const auto cubeDim = kCubeBBox.dim(); + CPPUNIT_ASSERT_EQUAL(kCubeBBox.min().z() + 1, bbox.min().z()); + CPPUNIT_ASSERT_EQUAL(kCubeBBox.max().z() - 1, bbox.max().z()); + CPPUNIT_ASSERT(int(bbox.volume()) < int(cubeDim.x() * cubeDim.y() * (cubeDim.z() - 2))); + + // Note: mCube index space corresponds to world space. + for (auto it = clipped->beginValueOn(); it; ++it) { + const auto xyz = frustum.applyInverseMap(it.getCoord().asVec3d()); + CPPUNIT_ASSERT(frustumIndexBBox.isInside(xyz)); + } + } + { + auto tile = openvdb::FloatGrid{0.0f}; + tile.tree().addTile(/*level=*/2, Coord{0}, /*value=*/5.0f, /*active=*/true); + + auto clipped = tools::clip(tile, frustum); + CPPUNIT_ASSERT(!clipped->empty()); + for (auto it = clipped->beginValueOn(); it; ++it) { + const auto xyz = frustum.applyInverseMap(it.getCoord().asVec3d()); + CPPUNIT_ASSERT(frustumIndexBBox.isInside(xyz)); + } + + clipped = tools::clip(tile, frustum, /*keepInterior=*/false); + CPPUNIT_ASSERT(!clipped->empty()); + for (auto it = clipped->beginValueOn(); it; ++it) { + const auto xyz = frustum.applyInverseMap(it.getCoord().asVec3d()); + CPPUNIT_ASSERT(!frustumIndexBBox.isInside(xyz)); + } + } +} + + +// Test clipping against a MaskGrid. +void +TestClip::testMaskGrid() +{ + using namespace openvdb; + MaskGrid mask(false); + mask.fill(kInnerBBox, true, true); + FloatGrid::Ptr clipped = tools::clip(mCube, mask); + validate(*clipped); +} + + +// Test clipping against a boolean mask grid. +void +TestClip::testBoolMask() +{ + using namespace openvdb; + BoolGrid mask(false); + mask.fill(kInnerBBox, true, true); + FloatGrid::Ptr clipped = tools::clip(mCube, mask); + validate(*clipped); +} + + +// Test clipping against a boolean mask grid with mask inversion. +void +TestClip::testInvertedBoolMask() +{ + using namespace openvdb; + // Construct a mask grid that is the "inverse" of the mask used in the other tests. + // (This is not a true inverse, since the mask's active voxel bounds are finite.) + BoolGrid mask(false); + mask.fill(kCubeBBox, true, true); + mask.fill(kInnerBBox, false, false); + // Clipping against the "inverted" mask with mask inversion enabled + // should give the same results as clipping normally against the normal mask. + FloatGrid::Ptr clipped = tools::clip(mCube, mask, /*keepInterior=*/false); + clipped->pruneGrid(); + validate(*clipped); +} + + +// Test clipping against a non-boolean mask grid. +void +TestClip::testNonBoolMask() +{ + using namespace openvdb; + Int32Grid mask(0); + mask.fill(kInnerBBox, -5, true); + FloatGrid::Ptr clipped = tools::clip(mCube, mask); + validate(*clipped); +} + + +// Test clipping against a non-boolean mask grid with mask inversion. +void +TestClip::testInvertedNonBoolMask() +{ + using namespace openvdb; + // Construct a mask grid that is the "inverse" of the mask used in the other tests. + // (This is not a true inverse, since the mask's active voxel bounds are finite.) + Grid mask(0); + auto paddedCubeBBox = kCubeBBox; + paddedCubeBBox.expand(2); + mask.fill(paddedCubeBBox, 99, true); + mask.fill(kInnerBBox, 0, false); + // Clipping against the "inverted" mask with mask inversion enabled + // should give the same results as clipping normally against the normal mask. + FloatGrid::Ptr clipped = tools::clip(mCube, mask, /*keepInterior=*/false); + clipped->pruneGrid(); + validate(*clipped); +} diff --git a/openvdb/unittest/TestConjGradient.cc b/openvdb/unittest/TestConjGradient.cc new file mode 100644 index 00000000..edff82a4 --- /dev/null +++ b/openvdb/unittest/TestConjGradient.cc @@ -0,0 +1,211 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + + +class TestConjGradient: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestConjGradient); + CPPUNIT_TEST(testJacobi); + CPPUNIT_TEST(testIncompleteCholesky); + CPPUNIT_TEST(testVectorDotProduct); + CPPUNIT_TEST_SUITE_END(); + + void testJacobi(); + void testIncompleteCholesky(); + void testVectorDotProduct(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestConjGradient); + + +//////////////////////////////////////// + + +void +TestConjGradient::testJacobi() +{ + using namespace openvdb; + + typedef math::pcg::SparseStencilMatrix MatrixType; + + const math::pcg::SizeType rows = 5; + + MatrixType A(rows); + A.setValue(0, 0, 24.0); + A.setValue(0, 2, 6.0); + A.setValue(1, 1, 8.0); + A.setValue(1, 2, 2.0); + A.setValue(2, 0, 6.0); + A.setValue(2, 1, 2.0); + A.setValue(2, 2, 8.0); + A.setValue(2, 3, -6.0); + A.setValue(2, 4, 2.0); + A.setValue(3, 2, -6.0); + A.setValue(3, 3, 24.0); + A.setValue(4, 2, 2.0); + A.setValue(4, 4, 8.0); + + CPPUNIT_ASSERT(A.isFinite()); + + MatrixType::VectorType + x(rows, 0.0), + b(rows, 1.0), + expected(rows); + + expected[0] = 0.0104167; + expected[1] = 0.09375; + expected[2] = 0.125; + expected[3] = 0.0729167; + expected[4] = 0.09375; + + math::pcg::JacobiPreconditioner precond(A); + + // Solve A * x = b for x. + math::pcg::State result = math::pcg::solve( + A, b, x, precond, math::pcg::terminationDefaults()); + + CPPUNIT_ASSERT(result.success); + CPPUNIT_ASSERT(result.iterations <= 20); + CPPUNIT_ASSERT(x.eq(expected, 1.0e-5)); +} + + +void +TestConjGradient::testIncompleteCholesky() +{ + using namespace openvdb; + + typedef math::pcg::SparseStencilMatrix MatrixType; + typedef math::pcg::IncompleteCholeskyPreconditioner CholeskyPrecond; + + const math::pcg::SizeType rows = 5; + + MatrixType A(5); + A.setValue(0, 0, 24.0); + A.setValue(0, 2, 6.0); + A.setValue(1, 1, 8.0); + A.setValue(1, 2, 2.0); + A.setValue(2, 0, 6.0); + A.setValue(2, 1, 2.0); + A.setValue(2, 2, 8.0); + A.setValue(2, 3, -6.0); + A.setValue(2, 4, 2.0); + A.setValue(3, 2, -6.0); + A.setValue(3, 3, 24.0); + A.setValue(4, 2, 2.0); + A.setValue(4, 4, 8.0); + + CPPUNIT_ASSERT(A.isFinite()); + + CholeskyPrecond precond(A); + { + const CholeskyPrecond::TriangularMatrix lower = precond.lowerMatrix(); + + CholeskyPrecond::TriangularMatrix expected(5); + expected.setValue(0, 0, 4.89898); + expected.setValue(1, 1, 2.82843); + expected.setValue(2, 0, 1.22474); + expected.setValue(2, 1, 0.707107); + expected.setValue(2, 2, 2.44949); + expected.setValue(3, 2, -2.44949); + expected.setValue(3, 3, 4.24264); + expected.setValue(4, 2, 0.816497); + expected.setValue(4, 4, 2.70801); + +#if 0 + std::cout << "Expected:\n"; + for (int i = 0; i < 5; ++i) { + std::cout << " " << expected.getConstRow(i).str() << std::endl; + } + std::cout << "Actual:\n"; + for (int i = 0; i < 5; ++i) { + std::cout << " " << lower.getConstRow(i).str() << std::endl; + } +#endif + + CPPUNIT_ASSERT(lower.eq(expected, 1.0e-5)); + } + { + const CholeskyPrecond::TriangularMatrix upper = precond.upperMatrix(); + + CholeskyPrecond::TriangularMatrix expected(5); + { + expected.setValue(0, 0, 4.89898); + expected.setValue(0, 2, 1.22474); + expected.setValue(1, 1, 2.82843); + expected.setValue(1, 2, 0.707107); + expected.setValue(2, 2, 2.44949); + expected.setValue(2, 3, -2.44949); + expected.setValue(2, 4, 0.816497); + expected.setValue(3, 3, 4.24264); + expected.setValue(4, 4, 2.70801); + } + +#if 0 + std::cout << "Expected:\n"; + for (int i = 0; i < 5; ++i) { + std::cout << " " << expected.getConstRow(i).str() << std::endl; + } + std::cout << "Actual:\n"; + for (int i = 0; i < 5; ++i) { + std::cout << " " << upper.getConstRow(i).str() << std::endl; + } +#endif + + CPPUNIT_ASSERT(upper.eq(expected, 1.0e-5)); + } + + MatrixType::VectorType + x(rows, 0.0), + b(rows, 1.0), + expected(rows); + + expected[0] = 0.0104167; + expected[1] = 0.09375; + expected[2] = 0.125; + expected[3] = 0.0729167; + expected[4] = 0.09375; + + // Solve A * x = b for x. + math::pcg::State result = math::pcg::solve( + A, b, x, precond, math::pcg::terminationDefaults()); + + CPPUNIT_ASSERT(result.success); + CPPUNIT_ASSERT(result.iterations <= 20); + CPPUNIT_ASSERT(x.eq(expected, 1.0e-5)); +} + +void +TestConjGradient::testVectorDotProduct() +{ + using namespace openvdb; + + typedef math::pcg::Vector VectorType; + + // Test small vector - runs in series + { + const size_t length = 1000; + VectorType aVec(length, 2.0); + VectorType bVec(length, 3.0); + + VectorType::ValueType result = aVec.dot(bVec); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result, 6.0 * length, 1.0e-7); + } + // Test long vector - runs in parallel + { + const size_t length = 10034502; + VectorType aVec(length, 2.0); + VectorType bVec(length, 3.0); + + VectorType::ValueType result = aVec.dot(bVec); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result, 6.0 * length, 1.0e-7); + } +} diff --git a/openvdb/unittest/TestCoord.cc b/openvdb/unittest/TestCoord.cc new file mode 100644 index 00000000..78bb1740 --- /dev/null +++ b/openvdb/unittest/TestCoord.cc @@ -0,0 +1,396 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include // for tbb::split + + +class TestCoord: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestCoord); + CPPUNIT_TEST(testCoord); + CPPUNIT_TEST(testConversion); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testCoordBBox); + CPPUNIT_TEST(testCoordHash); + CPPUNIT_TEST_SUITE_END(); + + void testCoord(); + void testConversion(); + void testIO(); + void testCoordBBox(); + void testCoordHash(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestCoord); + + +void +TestCoord::testCoord() +{ + using openvdb::Coord; + + for (int i=0; i<3; ++i) { + CPPUNIT_ASSERT_EQUAL(Coord::min()[i], std::numeric_limits::min()); + CPPUNIT_ASSERT_EQUAL(Coord::max()[i], std::numeric_limits::max()); + } + + Coord xyz(-1, 2, 4); + Coord xyz2 = -xyz; + CPPUNIT_ASSERT_EQUAL(Coord(1, -2, -4), xyz2); + + CPPUNIT_ASSERT_EQUAL(Coord(1, 2, 4), openvdb::math::Abs(xyz)); + + xyz2 = -xyz2; + CPPUNIT_ASSERT_EQUAL(xyz, xyz2); + + xyz.setX(-xyz.x()); + CPPUNIT_ASSERT_EQUAL(Coord(1, 2, 4), xyz); + + xyz2 = xyz >> 1; + CPPUNIT_ASSERT_EQUAL(Coord(0, 1, 2), xyz2); + + xyz2 |= 1; + CPPUNIT_ASSERT_EQUAL(Coord(1, 1, 3), xyz2); + + CPPUNIT_ASSERT(xyz2 != xyz); + CPPUNIT_ASSERT(xyz2 < xyz); + CPPUNIT_ASSERT(xyz2 <= xyz); + + Coord xyz3(xyz2); + xyz2 -= xyz3; + CPPUNIT_ASSERT_EQUAL(Coord(), xyz2); + + xyz2.reset(0, 4, 4); + xyz2.offset(-1); + CPPUNIT_ASSERT_EQUAL(Coord(-1, 3, 3), xyz2); + + // xyz = (1, 2, 4), xyz2 = (-1, 3, 3) + CPPUNIT_ASSERT_EQUAL(Coord(-1, 2, 3), Coord::minComponent(xyz, xyz2)); + CPPUNIT_ASSERT_EQUAL(Coord(1, 3, 4), Coord::maxComponent(xyz, xyz2)); +} + + +void +TestCoord::testConversion() +{ + using openvdb::Coord; + + openvdb::Vec3I iv(1, 2, 4); + Coord xyz(iv); + CPPUNIT_ASSERT_EQUAL(Coord(1, 2, 4), xyz); + CPPUNIT_ASSERT_EQUAL(iv, xyz.asVec3I()); + CPPUNIT_ASSERT_EQUAL(openvdb::Vec3i(1, 2, 4), xyz.asVec3i()); + + iv = (xyz + iv) + xyz; + CPPUNIT_ASSERT_EQUAL(openvdb::Vec3I(3, 6, 12), iv); + iv = iv - xyz; + CPPUNIT_ASSERT_EQUAL(openvdb::Vec3I(2, 4, 8), iv); + + openvdb::Vec3s fv = xyz.asVec3s(); + CPPUNIT_ASSERT(openvdb::math::isExactlyEqual(openvdb::Vec3s(1, 2, 4), fv)); +} + + +void +TestCoord::testIO() +{ + using openvdb::Coord; + + Coord xyz(-1, 2, 4), xyz2; + + std::ostringstream os(std::ios_base::binary); + CPPUNIT_ASSERT_NO_THROW(xyz.write(os)); + + std::istringstream is(os.str(), std::ios_base::binary); + CPPUNIT_ASSERT_NO_THROW(xyz2.read(is)); + + CPPUNIT_ASSERT_EQUAL(xyz, xyz2); + + os.str(""); + os << xyz; + CPPUNIT_ASSERT_EQUAL(std::string("[-1, 2, 4]"), os.str()); +} + +void +TestCoord::testCoordBBox() +{ + {// Empty constructor + openvdb::CoordBBox b; + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::max(), b.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::min(), b.max()); + CPPUNIT_ASSERT(b.empty()); + } + {// Construct bbox from min and max + const openvdb::Coord min(-1,-2,30), max(20,30,55); + openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(min, b.min()); + CPPUNIT_ASSERT_EQUAL(max, b.max()); + } + {// Construct bbox from components of min and max + const openvdb::Coord min(-1,-2,30), max(20,30,55); + openvdb::CoordBBox b(min[0], min[1], min[2], + max[0], max[1], max[2]); + CPPUNIT_ASSERT_EQUAL(min, b.min()); + CPPUNIT_ASSERT_EQUAL(max, b.max()); + } + {// tbb::split constructor + const openvdb::Coord min(-1,-2,30), max(20,30,55); + openvdb::CoordBBox a(min, max), b(a, tbb::split()); + CPPUNIT_ASSERT_EQUAL(min, b.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(20, 14, 55), b.max()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-1, 15, 30), a.min()); + CPPUNIT_ASSERT_EQUAL(max, a.max()); + } + {// createCube + const openvdb::Coord min(0,8,16); + const openvdb::CoordBBox b = openvdb::CoordBBox::createCube(min, 8); + CPPUNIT_ASSERT_EQUAL(min, b.min()); + CPPUNIT_ASSERT_EQUAL(min + openvdb::Coord(8-1), b.max()); + } + {// inf + const openvdb::CoordBBox b = openvdb::CoordBBox::inf(); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::min(), b.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::max(), b.max()); + } + {// empty, dim, hasVolume and volume + const openvdb::Coord c(1,2,3); + const openvdb::CoordBBox b0(c, c), b1(c, c.offsetBy(0,-1,0)), b2; + CPPUNIT_ASSERT( b0.hasVolume() && !b0.empty()); + CPPUNIT_ASSERT(!b1.hasVolume() && b1.empty()); + CPPUNIT_ASSERT(!b2.hasVolume() && b2.empty()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(1), b0.dim()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), b1.dim()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), b2.dim()); + CPPUNIT_ASSERT_EQUAL(uint64_t(1), b0.volume()); + CPPUNIT_ASSERT_EQUAL(uint64_t(0), b1.volume()); + CPPUNIT_ASSERT_EQUAL(uint64_t(0), b2.volume()); + } + {// volume and split constructor + const openvdb::Coord min(-1,-2,30), max(20,30,55); + const openvdb::CoordBBox bbox(min,max); + openvdb::CoordBBox a(bbox), b(a, tbb::split()); + CPPUNIT_ASSERT_EQUAL(bbox.volume(), a.volume() + b.volume()); + openvdb::CoordBBox c(b, tbb::split()); + CPPUNIT_ASSERT_EQUAL(bbox.volume(), a.volume() + b.volume() + c.volume()); + } + {// getCenter + const openvdb::Coord min(1,2,3), max(6,10,15); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(openvdb::Vec3d(3.5, 6.0, 9.0), b.getCenter()); + } + {// moveMin + const openvdb::Coord min(1,2,3), max(6,10,15); + openvdb::CoordBBox b(min, max); + const openvdb::Coord dim = b.dim(); + b.moveMin(openvdb::Coord(0)); + CPPUNIT_ASSERT_EQUAL(dim, b.dim()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), b.min()); + CPPUNIT_ASSERT_EQUAL(max-min, b.max()); + } + {// moveMax + const openvdb::Coord min(1,2,3), max(6,10,15); + openvdb::CoordBBox b(min, max); + const openvdb::Coord dim = b.dim(); + b.moveMax(openvdb::Coord(0)); + CPPUNIT_ASSERT_EQUAL(dim, b.dim()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), b.max()); + CPPUNIT_ASSERT_EQUAL(min-max, b.min()); + } + {// a volume that overflows Int32. + using Int32 = openvdb::Int32; + Int32 maxInt32 = std::numeric_limits::max(); + const openvdb::Coord min(Int32(0), Int32(0), Int32(0)); + const openvdb::Coord max(maxInt32-Int32(2), Int32(2), Int32(2)); + + const openvdb::CoordBBox b(min, max); + uint64_t volume = UINT64_C(19327352814); + CPPUNIT_ASSERT_EQUAL(volume, b.volume()); + } + {// minExtent and maxExtent + const openvdb::Coord min(1,2,3); + { + const openvdb::Coord max = min + openvdb::Coord(1,2,3); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 0); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 2); + } + { + const openvdb::Coord max = min + openvdb::Coord(1,3,2); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 0); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 1); + } + { + const openvdb::Coord max = min + openvdb::Coord(2,1,3); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 1); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 2); + } + { + const openvdb::Coord max = min + openvdb::Coord(2,3,1); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 2); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 1); + } + { + const openvdb::Coord max = min + openvdb::Coord(3,1,2); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 1); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 0); + } + { + const openvdb::Coord max = min + openvdb::Coord(3,2,1); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(int(b.minExtent()), 2); + CPPUNIT_ASSERT_EQUAL(int(b.maxExtent()), 0); + } + } + + {//reset + openvdb::CoordBBox b; + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::max(), b.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::min(), b.max()); + CPPUNIT_ASSERT(b.empty()); + + const openvdb::Coord min(-1,-2,30), max(20,30,55); + b.reset(min, max); + CPPUNIT_ASSERT_EQUAL(min, b.min()); + CPPUNIT_ASSERT_EQUAL(max, b.max()); + CPPUNIT_ASSERT(!b.empty()); + + b.reset(); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::max(), b.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord::min(), b.max()); + CPPUNIT_ASSERT(b.empty()); + } + + {// ZYX Iterator 1 + const openvdb::Coord min(-1,-2,3), max(2,3,5); + const openvdb::CoordBBox b(min, max); + const size_t count = b.volume(); + size_t n = 0; + openvdb::CoordBBox::ZYXIterator ijk(b); + for (int i=min[0]; i<=max[0]; ++i) { + for (int j=min[1]; j<=max[1]; ++j) { + for (int k=min[2]; k<=max[2]; ++k, ++ijk, ++n) { + CPPUNIT_ASSERT(ijk); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(i,j,k), *ijk); + } + } + } + CPPUNIT_ASSERT_EQUAL(count, n); + CPPUNIT_ASSERT(!ijk); + ++ijk; + CPPUNIT_ASSERT(!ijk); + } + + {// ZYX Iterator 2 + const openvdb::Coord min(-1,-2,3), max(2,3,5); + const openvdb::CoordBBox b(min, max); + const size_t count = b.volume(); + size_t n = 0; + openvdb::Coord::ValueType unused = 0; + for (const auto& ijk: b) { + unused += ijk[0]; + CPPUNIT_ASSERT(++n <= count); + } + CPPUNIT_ASSERT_EQUAL(count, n); + } + + {// XYZ Iterator 1 + const openvdb::Coord min(-1,-2,3), max(2,3,5); + const openvdb::CoordBBox b(min, max); + const size_t count = b.volume(); + size_t n = 0; + openvdb::CoordBBox::XYZIterator ijk(b); + for (int k=min[2]; k<=max[2]; ++k) { + for (int j=min[1]; j<=max[1]; ++j) { + for (int i=min[0]; i<=max[0]; ++i, ++ijk, ++n) { + CPPUNIT_ASSERT( ijk ); + CPPUNIT_ASSERT_EQUAL( openvdb::Coord(i,j,k), *ijk ); + } + } + } + CPPUNIT_ASSERT_EQUAL(count, n); + CPPUNIT_ASSERT( !ijk ); + ++ijk; + CPPUNIT_ASSERT( !ijk ); + } + + {// XYZ Iterator 2 + const openvdb::Coord min(-1,-2,3), max(2,3,5); + const openvdb::CoordBBox b(min, max); + const size_t count = b.volume(); + size_t n = 0; + for (auto ijk = b.beginXYZ(); ijk; ++ijk) { + CPPUNIT_ASSERT( ++n <= count ); + } + CPPUNIT_ASSERT_EQUAL(count, n); + } + + {// bit-wise operations + const openvdb::Coord min(-1,-2,3), max(2,3,5); + const openvdb::CoordBBox b(min, max); + CPPUNIT_ASSERT_EQUAL(openvdb::CoordBBox(min>>1,max>>1), b>>size_t(1)); + CPPUNIT_ASSERT_EQUAL(openvdb::CoordBBox(min>>3,max>>3), b>>size_t(3)); + CPPUNIT_ASSERT_EQUAL(openvdb::CoordBBox(min<<1,max<<1), b<() != b.hash<>()); + CPPUNIT_ASSERT(a.hash<10>() != b.hash<10>()); + CPPUNIT_ASSERT(a.hash<5>() != b.hash<5>()); + } + + {//test std::hash function + std::hash h; + openvdb::Coord a(-1, 34, 67), b(-2, 34, 67); + CPPUNIT_ASSERT(h(a) != h(b)); + } + + {//test hash map (= unordered_map) + using KeyT = openvdb::Coord; + using ValueT = size_t; + using HashT = std::hash; + + std::unordered_map h; + const openvdb::Coord min(-10,-20,30), max(20,30,50); + const openvdb::CoordBBox bbox(min, max); + size_t n = 0; + for (const auto& ijk: bbox) h[ijk] = n++; + CPPUNIT_ASSERT_EQUAL(h.size(), n); + n = 0; + for (const auto& ijk: bbox) CPPUNIT_ASSERT_EQUAL(h[ijk], n++); + CPPUNIT_ASSERT(h.load_factor() <= 1.0f);// no hask key collisions! + } +} diff --git a/openvdb/unittest/TestCpt.cc b/openvdb/unittest/TestCpt.cc new file mode 100644 index 00000000..1f0e7bf0 --- /dev/null +++ b/openvdb/unittest/TestCpt.cc @@ -0,0 +1,535 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include // for old GradientStencil +#include "util.h" // for unittest_util::makeSphere() + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +class TestCpt: public CppUnit::TestFixture +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestCpt); + CPPUNIT_TEST(testCpt); // Cpt in World Space + CPPUNIT_TEST(testCptStencil); + CPPUNIT_TEST(testCptTool); // Cpt tool + CPPUNIT_TEST(testCptMaskedTool); + CPPUNIT_TEST(testOldStyleStencils); // old stencil impl + CPPUNIT_TEST_SUITE_END(); + + void testCpt(); + void testCptStencil(); + void testCptTool(); + void testCptMaskedTool(); + void testOldStyleStencils(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestCpt); + +void +TestCpt::testCpt() +{ + using namespace openvdb; + + typedef FloatGrid::ConstAccessor AccessorType; + + { // unit voxel size tests + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + const FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Vec3f center(35.0, 30.0f, 40.0f); + const float radius=0;//point at {35,30,40} + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + + AccessorType inAccessor = grid->getConstAccessor(); + // this uses the gradient. Only test for a few maps, since the gradient is + // tested elsewhere + + Coord xyz(35,30,30); + + math::TranslationMap translate; + // Note the CPT::result is in continuous index space + Vec3f P = math::CPT::result(translate, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + // CPT_RANGE::result is in the range of the map + // CPT_RANGE::result = map.applyMap(CPT::result()) + // for our tests, the map is an identity so in this special case + // the two versions of the Cpt should exactly agree + P = math::CPT_RANGE::result(translate, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + xyz.reset(35,30,35); + + P = math::CPT::result(translate, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + + P = math::CPT_RANGE::result(translate, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + } + { + // NON-UNIT VOXEL SIZE + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + AccessorType inAccessor = grid->getConstAccessor(); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + + Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere + math::AffineMap affine(voxel_size*math::Mat3d::identity()); + + Vec3f P = math::CPT::result(affine, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]); + + + P = math::CPT_RANGE::result(affine, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(10,P[2]); + + xyz.reset(12,16,10); + + P = math::CPT::result(affine, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + + P = math::CPT_RANGE::result(affine, inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(6,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + } + { + // NON-UNIFORM SCALING + Vec3d voxel_sizes(0.5, 1, 0.5); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::Ptr(new math::Transform(base_map))); + + CPPUNIT_ASSERT(grid->empty()); + AccessorType inAccessor = grid->getConstAccessor(); + + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + + Coord ijk = grid->transform().worldToIndexNodeCentered(Vec3d(10,8,10)); + + //Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere + math::ScaleMap scale(voxel_sizes); + Vec3f P; + P = math::CPT::result(scale, inAccessor, ijk); + ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]); + + + // world space result + P = math::CPT_RANGE::result(scale, inAccessor, ijk); + CPPUNIT_ASSERT_DOUBLES_EQUAL(16,P[0], 0.02 ); + CPPUNIT_ASSERT_DOUBLES_EQUAL(8, P[1], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(10,P[2], 0.02); + + //xyz.reset(12,16,10); + ijk = grid->transform().worldToIndexNodeCentered(Vec3d(6,8,5)); + + P = math::CPT::result(scale, inAccessor, ijk); + ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + + P = math::CPT_RANGE::result(scale, inAccessor, ijk); + CPPUNIT_ASSERT_DOUBLES_EQUAL(6,P[0], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(8,P[1], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0,P[2], 0.02); + + } + +} + + +void +TestCpt::testCptStencil() +{ + using namespace openvdb; + + { // UNIT VOXEL TEST + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + const FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + // this uses the gradient. Only test for a few maps, since the gradient is + // tested elsewhere + + math::SevenPointStencil sevenpt(*grid); + math::SecondOrderDenseStencil dense_2nd(*grid); + + + Coord xyz(35,30,30); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + sevenpt.moveTo(xyz); + dense_2nd.moveTo(xyz); + + math::TranslationMap translate; + // Note the CPT::result is in continuous index space + Vec3f P = math::CPT::result(translate, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + // CPT_RANGE::result_stencil is in the range of the map + // CPT_RANGE::result_stencil = map.applyMap(CPT::result_stencil()) + // for our tests, the map is an identity so in this special case + // the two versions of the Cpt should exactly agree + P = math::CPT_RANGE::result(translate, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + xyz.reset(35,30,35); + + sevenpt.moveTo(xyz); + dense_2nd.moveTo(xyz); + + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + P = math::CPT::result(translate, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + + P = math::CPT_RANGE::result(translate, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + + xyz.reset(35,30,30); + + sevenpt.moveTo(xyz); + dense_2nd.moveTo(xyz); + + math::AffineMap affine; + + P = math::CPT::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + + P = math::CPT_RANGE::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + xyz.reset(35,30,35); + + sevenpt.moveTo(xyz); + dense_2nd.moveTo(xyz); + + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + P = math::CPT::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + P = math::CPT_RANGE::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + } + { + // NON-UNIT VOXEL SIZE + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + + + math::SecondOrderDenseStencil dense_2nd(*grid); + + + Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere + math::AffineMap affine(voxel_size*math::Mat3d::identity()); + dense_2nd.moveTo(xyz); + + Vec3f P = math::CPT::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]); + + + P = math::CPT_RANGE::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(10,P[2]); + + xyz.reset(12,16,10); + dense_2nd.moveTo(xyz); + + P = math::CPT::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + + P = math::CPT_RANGE::result(affine, dense_2nd); + ASSERT_DOUBLES_EXACTLY_EQUAL(6,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + } + { + // NON-UNIFORM SCALING + Vec3d voxel_sizes(0.5, 1, 0.5); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::Ptr(new math::Transform(base_map))); + + CPPUNIT_ASSERT(grid->empty()); + + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + + Coord ijk = grid->transform().worldToIndexNodeCentered(Vec3d(10,8,10)); + math::SevenPointStencil sevenpt(*grid); + + sevenpt.moveTo(ijk); + + //Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere + math::ScaleMap scale(voxel_sizes); + Vec3f P; + P = math::CPT::result(scale, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]); + + + // world space result + P = math::CPT_RANGE::result(scale, sevenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(16,P[0], 0.02 ); + CPPUNIT_ASSERT_DOUBLES_EQUAL(8, P[1], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(10,P[2], 0.02); + + //xyz.reset(12,16,10); + ijk = grid->transform().worldToIndexNodeCentered(Vec3d(6,8,5)); + sevenpt.moveTo(ijk); + P = math::CPT::result(scale, sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]); + + + P = math::CPT_RANGE::result(scale, sevenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(6,P[0], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(8,P[1], 0.02); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0,P[2], 0.02); + + } + + +} + +void +TestCpt::testCptTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + const FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + // run the tool + typedef openvdb::tools::Cpt FloatCpt; + FloatCpt cpt(*grid); + FloatCpt::OutGridType::Ptr cptGrid = + cpt.process(true/*threaded*/, false/*use world transform*/); + + FloatCpt::OutGridType::ConstAccessor cptAccessor = cptGrid->getConstAccessor(); + + Coord xyz(35,30,30); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + Vec3f P = cptAccessor.getValue(xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); + + xyz.reset(35,30,35); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + P = cptAccessor.getValue(xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]); +} + +void +TestCpt::testCptMaskedTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + const FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41)); + BoolGrid::Ptr maskGrid = BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + // run the tool + //typedef openvdb::tools::Cpt FloatCpt;//fails because MaskT defaults to MaskGrid + typedef openvdb::tools::Cpt FloatCpt; + FloatCpt cpt(*grid, *maskGrid); + FloatCpt::OutGridType::Ptr cptGrid = + cpt.process(true/*threaded*/, false/*use world transform*/); + + FloatCpt::OutGridType::ConstAccessor cptAccessor = cptGrid->getConstAccessor(); + + // inside the masked region + Coord xyz(35,30,30); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + + Vec3f P = cptAccessor.getValue(xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[0], P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[1], P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(center[2], P[2]); + + // outside the masked region + xyz.reset(42,42,42); + CPPUNIT_ASSERT(!cptAccessor.isValueOn(xyz)); +} + +void +TestCpt::testOldStyleStencils() +{ + using namespace openvdb; + + {// test of level set to sphere at (6,8,10) with R=10 and dx=0.5 + + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(/*voxel size=*/0.5)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f,8.0f,10.0f);//i.e. (12,16,20) in index space + const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + math::GradStencil gs(*grid); + + Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere + gs.moveTo(xyz); + float dist = gs.getValue();//signed closest distance to sphere in world coordinates + Vec3f P = gs.cpt();//closes point to sphere in index space + ASSERT_DOUBLES_EXACTLY_EQUAL(dist,-6); + ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]); + + xyz.reset(12,16,10);//i.e. (6,8,5) in world space or 15 world units inside the sphere + gs.moveTo(xyz); + dist = gs.getValue();//signed closest distance to sphere in world coordinates + P = gs.cpt();//closes point to sphere in index space + ASSERT_DOUBLES_EXACTLY_EQUAL(-5,dist); + ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0,P[2]); + } +} diff --git a/openvdb/unittest/TestCurl.cc b/openvdb/unittest/TestCurl.cc new file mode 100644 index 00000000..c0a7ad15 --- /dev/null +++ b/openvdb/unittest/TestCurl.cc @@ -0,0 +1,561 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/1e-6); + +namespace { +const int GRID_DIM = 10; +} + + +class TestCurl: public CppUnit::TestFixture +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestCurl); + CPPUNIT_TEST(testISCurl); // Gradient in Index Space + CPPUNIT_TEST(testISCurlStencil); + CPPUNIT_TEST(testWSCurl); // Gradient in World Space + CPPUNIT_TEST(testWSCurlStencil); + CPPUNIT_TEST(testCurlTool); // Gradient tool + CPPUNIT_TEST(testCurlMaskedTool); // Gradient tool + + CPPUNIT_TEST_SUITE_END(); + + void testISCurl(); + void testISCurlStencil(); + void testWSCurl(); + void testWSCurlStencil(); + void testCurlTool(); + void testCurlMaskedTool(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestCurl); + + +void +TestCurl::testCurlTool() +{ + using namespace openvdb; + + VectorGrid::Ptr inGrid = VectorGrid::create(); + const VectorTree& inTree = inGrid->tree(); + CPPUNIT_ASSERT(inTree.empty()); + + VectorGrid::Accessor inAccessor = inGrid->getAccessor(); + int dim = GRID_DIM; + for (int x = -dim; xactiveVoxelCount())); + + VectorGrid::ConstAccessor curlAccessor = curl_grid->getConstAccessor(); + --dim;//ignore boundary curl vectors + for (int x = -dim; x +#include +#include +#include +#include +#include +#ifdef BENCHMARK_TEST +#include +#endif + + +class TestDense: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestDense); + + CPPUNIT_TEST(testDenseZYX); + CPPUNIT_TEST(testDenseXYZ); + + CPPUNIT_TEST(testCopyZYX); + CPPUNIT_TEST(testCopyXYZ); + + CPPUNIT_TEST(testCopyBoolZYX); + CPPUNIT_TEST(testCopyBoolXYZ); + + CPPUNIT_TEST(testCopyFromDenseWithOffsetZYX); + CPPUNIT_TEST(testCopyFromDenseWithOffsetXYZ); + + CPPUNIT_TEST(testDense2SparseZYX); + CPPUNIT_TEST(testDense2SparseXYZ); + + CPPUNIT_TEST(testDense2Sparse2ZYX); + CPPUNIT_TEST(testDense2Sparse2XYZ); + + CPPUNIT_TEST(testInvalidBBoxZYX); + CPPUNIT_TEST(testInvalidBBoxXYZ); + + CPPUNIT_TEST(testDense2Sparse2DenseZYX); + CPPUNIT_TEST(testDense2Sparse2DenseXYZ); + CPPUNIT_TEST_SUITE_END(); + + void testDenseZYX(); + void testDenseXYZ(); + + template + void testCopy(); + void testCopyZYX() { this->testCopy(); } + void testCopyXYZ() { this->testCopy(); } + + template + void testCopyBool(); + void testCopyBoolZYX() { this->testCopyBool(); } + void testCopyBoolXYZ() { this->testCopyBool(); } + + template + void testCopyFromDenseWithOffset(); + void testCopyFromDenseWithOffsetZYX() { + this->testCopyFromDenseWithOffset(); + } + void testCopyFromDenseWithOffsetXYZ() { + this->testCopyFromDenseWithOffset(); + } + + template + void testDense2Sparse(); + void testDense2SparseZYX() { this->testDense2Sparse(); } + void testDense2SparseXYZ() { this->testDense2Sparse(); } + + template + void testDense2Sparse2(); + void testDense2Sparse2ZYX() { this->testDense2Sparse2(); } + void testDense2Sparse2XYZ() { this->testDense2Sparse2(); } + + template + void testInvalidBBox(); + void testInvalidBBoxZYX() { this->testInvalidBBox(); } + void testInvalidBBoxXYZ() { this->testInvalidBBox(); } + + template + void testDense2Sparse2Dense(); + void testDense2Sparse2DenseZYX() { this->testDense2Sparse2Dense(); } + void testDense2Sparse2DenseXYZ() { this->testDense2Sparse2Dense(); } +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestDense); + + +void +TestDense::testDenseZYX() +{ + const openvdb::CoordBBox bbox(openvdb::Coord(-40,-5, 6), + openvdb::Coord(-11, 7,22)); + openvdb::tools::Dense dense(bbox);//LayoutZYX is the default + + // Check Desne::origin() + CPPUNIT_ASSERT(openvdb::Coord(-40,-5, 6) == dense.origin()); + + // Check coordToOffset and offsetToCoord + size_t offset = 0; + for (openvdb::Coord P(bbox.min()); P[0] <= bbox.max()[0]; ++P[0]) { + for (P[1] = bbox.min()[1]; P[1] <= bbox.max()[1]; ++P[1]) { + for (P[2] = bbox.min()[2]; P[2] <= bbox.max()[2]; ++P[2]) { + //std::cerr << "offset = " << offset << " P = " << P << std::endl; + CPPUNIT_ASSERT_EQUAL(offset, dense.coordToOffset(P)); + CPPUNIT_ASSERT_EQUAL(P - dense.origin(), dense.offsetToLocalCoord(offset)); + CPPUNIT_ASSERT_EQUAL(P, dense.offsetToCoord(offset)); + ++offset; + } + } + } + + // Check Dense::valueCount + const int size = static_cast(dense.valueCount()); + CPPUNIT_ASSERT_EQUAL(30*13*17, size); + + // Check Dense::fill(float) and Dense::getValue(size_t) + const float v = 0.234f; + dense.fill(v); + for (int i=0; i dense(bbox); + + // Check Desne::origin() + CPPUNIT_ASSERT(openvdb::Coord(-40,-5, 6) == dense.origin()); + + // Check coordToOffset and offsetToCoord + size_t offset = 0; + for (openvdb::Coord P(bbox.min()); P[2] <= bbox.max()[2]; ++P[2]) { + for (P[1] = bbox.min()[1]; P[1] <= bbox.max()[1]; ++P[1]) { + for (P[0] = bbox.min()[0]; P[0] <= bbox.max()[0]; ++P[0]) { + //std::cerr << "offset = " << offset << " P = " << P << std::endl; + CPPUNIT_ASSERT_EQUAL(offset, dense.coordToOffset(P)); + CPPUNIT_ASSERT_EQUAL(P - dense.origin(), dense.offsetToLocalCoord(offset)); + CPPUNIT_ASSERT_EQUAL(P, dense.offsetToCoord(offset)); + ++offset; + } + } + } + + // Check Dense::valueCount + const int size = static_cast(dense.valueCount()); + CPPUNIT_ASSERT_EQUAL(30*13*17, size); + + // Check Dense::fill(float) and Dense::getValue(size_t) + const float v = 0.234f; + dense.fill(v); + for (int i=0; i > +class CheckDense +{ +public: + typedef typename TreeT::ValueType ValueT; + + CheckDense() : mTree(NULL), mDense(NULL) + { + CPPUNIT_ASSERT(DenseT::memoryLayout() == openvdb::tools::LayoutZYX || + DenseT::memoryLayout() == openvdb::tools::LayoutXYZ ); + } + + void check(const TreeT& tree, const DenseT& dense) + { + mTree = &tree; + mDense = &dense; + tbb::parallel_for(dense.bbox(), *this); + } + void operator()(const openvdb::CoordBBox& bbox) const + { + openvdb::tree::ValueAccessor acc(*mTree); + + if (DenseT::memoryLayout() == openvdb::tools::LayoutZYX) {//resolved at compiletime + for (openvdb::Coord P(bbox.min()); P[0] <= bbox.max()[0]; ++P[0]) { + for (P[1] = bbox.min()[1]; P[1] <= bbox.max()[1]; ++P[1]) { + for (P[2] = bbox.min()[2]; P[2] <= bbox.max()[2]; ++P[2]) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(acc.getValue(P), mDense->getValue(P), + /*tolerance=*/0.0001); + } + } + } + } else { + for (openvdb::Coord P(bbox.min()); P[2] <= bbox.max()[2]; ++P[2]) { + for (P[1] = bbox.min()[1]; P[1] <= bbox.max()[1]; ++P[1]) { + for (P[0] = bbox.min()[0]; P[0] <= bbox.max()[0]; ++P[0]) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(acc.getValue(P), mDense->getValue(P), + /*tolerance=*/0.0001); + } + } + } + } + } +private: + const TreeT* mTree; + const DenseT* mDense; +};// CheckDense + +template +void +TestDense::testCopy() +{ + using namespace openvdb; + + //std::cerr << "\nTesting testCopy with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef tools::Dense DenseT; + CheckDense checkDense; + const float radius = 10.0f, tolerance = 0.00001f; + const Vec3f center(0.0f); + // decrease the voxelSize to test larger grids +#ifdef BENCHMARK_TEST + const float voxelSize = 0.05f, width = 5.0f; +#else + const float voxelSize = 0.5f, width = 5.0f; +#endif + + // Create a VDB containing a level set of a sphere + FloatGrid::Ptr grid = + tools::createLevelSetSphere(radius, center, voxelSize, width); + FloatTree& tree0 = grid->tree(); + + // Create an empty dense grid + DenseT dense(grid->evalActiveVoxelBoundingBox()); +#ifdef BENCHMARK_TEST + std::cerr << "\nBBox = " << grid->evalActiveVoxelBoundingBox() << std::endl; +#endif + + {//check Dense::fill + dense.fill(voxelSize); +#ifndef BENCHMARK_TEST + checkDense.check(FloatTree(voxelSize), dense); +#endif + } + + {// parallel convert to dense +#ifdef BENCHMARK_TEST + util::CpuTimer ts; + ts.start("CopyToDense"); +#endif + tools::copyToDense(*grid, dense); +#ifdef BENCHMARK_TEST + ts.stop(); +#else + checkDense.check(tree0, dense); +#endif + } + + {// Parallel create from dense +#ifdef BENCHMARK_TEST + util::CpuTimer ts; + ts.start("CopyFromDense"); +#endif + FloatTree tree1(tree0.background()); + tools::copyFromDense(dense, tree1, tolerance); +#ifdef BENCHMARK_TEST + ts.stop(); +#else + checkDense.check(tree1, dense); +#endif + } +} + +template +void +TestDense::testCopyBool() +{ + using namespace openvdb; + + //std::cerr << "\nTesting testCopyBool with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + const Coord bmin(-1), bmax(8); + const CoordBBox bbox(bmin, bmax); + + BoolGrid::Ptr grid = createGrid(false); + BoolGrid::ConstAccessor acc = grid->getConstAccessor(); + + typedef openvdb::tools::Dense DenseT; + DenseT dense(bbox); + dense.fill(false); + + // Start with sparse and dense grids both filled with false. + Coord xyz; + int &x = xyz[0], &y = xyz[1], &z = xyz[2]; + for (x = bmin.x(); x <= bmax.x(); ++x) { + for (y = bmin.y(); y <= bmax.y(); ++y) { + for (z = bmin.z(); z <= bmax.z(); ++z) { + CPPUNIT_ASSERT_EQUAL(false, dense.getValue(xyz)); + CPPUNIT_ASSERT_EQUAL(false, acc.getValue(xyz)); + } + } + } + + // Fill the dense grid with true. + dense.fill(true); + // Copy the contents of the dense grid to the sparse grid. + tools::copyFromDense(dense, *grid, /*tolerance=*/false); + + // Verify that both sparse and dense grids are now filled with true. + for (x = bmin.x(); x <= bmax.x(); ++x) { + for (y = bmin.y(); y <= bmax.y(); ++y) { + for (z = bmin.z(); z <= bmax.z(); ++z) { + CPPUNIT_ASSERT_EQUAL(true, dense.getValue(xyz)); + CPPUNIT_ASSERT_EQUAL(true, acc.getValue(xyz)); + } + } + } + + // Fill the dense grid with false. + dense.fill(false); + // Copy the contents (= true) of the sparse grid to the dense grid. + tools::copyToDense(*grid, dense); + + // Verify that the dense grid is now filled with true. + for (x = bmin.x(); x <= bmax.x(); ++x) { + for (y = bmin.y(); y <= bmax.y(); ++y) { + for (z = bmin.z(); z <= bmax.z(); ++z) { + CPPUNIT_ASSERT_EQUAL(true, dense.getValue(xyz)); + } + } + } +} + + +// Test copying from a dense grid to a sparse grid with various bounding boxes. +template +void +TestDense::testCopyFromDenseWithOffset() +{ + using namespace openvdb; + + //std::cerr << "\nTesting testCopyFromDenseWithOffset with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef openvdb::tools::Dense DenseT; + + const int DIM = 20, COUNT = DIM * DIM * DIM; + const float FOREGROUND = 99.0f, BACKGROUND = 5000.0f; + + const int OFFSET[] = { 1, -1, 1001, -1001 }; + for (int offsetIdx = 0; offsetIdx < 4; ++offsetIdx) { + + const int offset = OFFSET[offsetIdx]; + const CoordBBox bbox = CoordBBox::createCube(Coord(offset), DIM); + + DenseT dense(bbox, FOREGROUND); + CPPUNIT_ASSERT_EQUAL(bbox, dense.bbox()); + + FloatGrid grid(BACKGROUND); + tools::copyFromDense(dense, grid, /*tolerance=*/0.0); + + const CoordBBox gridBBox = grid.evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT_EQUAL(bbox, gridBBox); + CPPUNIT_ASSERT_EQUAL(COUNT, int(grid.activeVoxelCount())); + + FloatGrid::ConstAccessor acc = grid.getConstAccessor(); + for (int i = gridBBox.min()[0], ie = gridBBox.max()[0]; i < ie; ++i) { + for (int j = gridBBox.min()[1], je = gridBBox.max()[1]; j < je; ++j) { + for (int k = gridBBox.min()[2], ke = gridBBox.max()[2]; k < ke; ++k) { + const Coord ijk(i, j, k); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + FOREGROUND, acc.getValue(ijk), /*tolerance=*/0.0); + CPPUNIT_ASSERT(acc.isValueOn(ijk)); + } + } + } + } +} + +template +void +TestDense::testDense2Sparse() +{ + // The following test revealed a bug in v2.0.0b2 + using namespace openvdb; + + //std::cerr << "\nTesting testDense2Sparse with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef tools::Dense DenseT; + + // Test Domain Resolution + Int32 sizeX = 8, sizeY = 8, sizeZ = 9; + + // Define a dense grid + DenseT dense(Coord(sizeX, sizeY, sizeZ)); + const CoordBBox bboxD = dense.bbox(); + // std::cerr << "\nDense bbox" << bboxD << std::endl; + + // Verify that the CoordBBox is truely used as [inclusive, inclusive] + CPPUNIT_ASSERT(int(dense.valueCount()) == int(sizeX * sizeY * sizeZ)); + + // Fill the dense grid with constant value 1. + dense.fill(1.0f); + + // Create two empty float grids + FloatGrid::Ptr gridS = FloatGrid::create(0.0f /*background*/); + FloatGrid::Ptr gridP = FloatGrid::create(0.0f /*background*/); + + // Convert in serial and parallel modes + tools::copyFromDense(dense, *gridS, /*tolerance*/0.0f, /*serial = */ true); + tools::copyFromDense(dense, *gridP, /*tolerance*/0.0f, /*serial = */ false); + + float minS, maxS; + float minP, maxP; + + gridS->evalMinMax(minS, maxS); + gridP->evalMinMax(minP, maxP); + + const float tolerance = 0.0001f; + + CPPUNIT_ASSERT_DOUBLES_EQUAL(minS, minP, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(maxS, maxP, tolerance); + CPPUNIT_ASSERT_EQUAL(gridP->activeVoxelCount(), Index64(sizeX * sizeY * sizeZ)); + + const FloatTree& treeS = gridS->tree(); + const FloatTree& treeP = gridP->tree(); + + // Values in Test Domain are correct + for (Coord ijk(bboxD.min()); ijk[0] <= bboxD.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxD.min()[1]; ijk[1] <= bboxD.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxD.min()[2]; ijk[2] <= bboxD.max()[2]; ++ijk[2]) { + + const float expected = bboxD.isInside(ijk) ? 1.f : 0.f; + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, 1.f, tolerance); + + const float& vS = treeS.getValue(ijk); + const float& vP = treeP.getValue(ijk); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vS, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vP, tolerance); + } + } + } + + CoordBBox bboxP = gridP->evalActiveVoxelBoundingBox(); + const Index64 voxelCountP = gridP->activeVoxelCount(); + //std::cerr << "\nParallel: bbox=" << bboxP << " voxels=" << voxelCountP << std::endl; + CPPUNIT_ASSERT( bboxP == bboxD ); + CPPUNIT_ASSERT_EQUAL( dense.valueCount(), voxelCountP); + + CoordBBox bboxS = gridS->evalActiveVoxelBoundingBox(); + const Index64 voxelCountS = gridS->activeVoxelCount(); + //std::cerr << "\nSerial: bbox=" << bboxS << " voxels=" << voxelCountS << std::endl; + CPPUNIT_ASSERT( bboxS == bboxD ); + CPPUNIT_ASSERT_EQUAL( dense.valueCount(), voxelCountS); + + // Topology + CPPUNIT_ASSERT( bboxS.isInside(bboxS) ); + CPPUNIT_ASSERT( bboxP.isInside(bboxP) ); + CPPUNIT_ASSERT( bboxS.isInside(bboxP) ); + CPPUNIT_ASSERT( bboxP.isInside(bboxS) ); + + /// Check that the two grids agree + for (Coord ijk(bboxS.min()); ijk[0] <= bboxS.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxS.min()[1]; ijk[1] <= bboxS.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxS.min()[2]; ijk[2] <= bboxS.max()[2]; ++ijk[2]) { + + const float& vS = treeS.getValue(ijk); + const float& vP = treeP.getValue(ijk); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(vS, vP, tolerance); + + // the value we should get based on the original domain + const float expected = bboxD.isInside(ijk) ? 1.f : 0.f; + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vP, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vS, tolerance); + } + } + } + + + // Verify the tree topology matches. + + CPPUNIT_ASSERT_EQUAL(gridP->activeVoxelCount(), gridS->activeVoxelCount()); + CPPUNIT_ASSERT(gridP->evalActiveVoxelBoundingBox() == gridS->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT(treeP.hasSameTopology(treeS) ); + +} + +template +void +TestDense::testDense2Sparse2() +{ + // The following tests copying a dense grid into a VDB tree with + // existing values outside the bbox of the dense grid. + + using namespace openvdb; + + //std::cerr << "\nTesting testDense2Sparse2 with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef tools::Dense DenseT; + + // Test Domain Resolution + const int sizeX = 8, sizeY = 8, sizeZ = 9; + const Coord magicVoxel(sizeX, sizeY, sizeZ); + + // Define a dense grid + DenseT dense(Coord(sizeX, sizeY, sizeZ)); + const CoordBBox bboxD = dense.bbox(); + //std::cerr << "\nDense bbox" << bboxD << std::endl; + + // Verify that the CoordBBox is truely used as [inclusive, inclusive] + CPPUNIT_ASSERT_EQUAL(sizeX * sizeY * sizeZ, static_cast(dense.valueCount())); + + // Fill the dense grid with constant value 1. + dense.fill(1.0f); + + // Create two empty float grids + FloatGrid::Ptr gridS = FloatGrid::create(0.0f /*background*/); + FloatGrid::Ptr gridP = FloatGrid::create(0.0f /*background*/); + gridS->tree().setValue(magicVoxel, 5.0f); + gridP->tree().setValue(magicVoxel, 5.0f); + + // Convert in serial and parallel modes + tools::copyFromDense(dense, *gridS, /*tolerance*/0.0f, /*serial = */ true); + tools::copyFromDense(dense, *gridP, /*tolerance*/0.0f, /*serial = */ false); + + float minS, maxS; + float minP, maxP; + + gridS->evalMinMax(minS, maxS); + gridP->evalMinMax(minP, maxP); + + const float tolerance = 0.0001f; + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0f, minP, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0f, minS, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0f, maxP, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0f, maxS, tolerance); + CPPUNIT_ASSERT_EQUAL(gridP->activeVoxelCount(), Index64(1 + sizeX * sizeY * sizeZ)); + + const FloatTree& treeS = gridS->tree(); + const FloatTree& treeP = gridP->tree(); + + // Values in Test Domain are correct + for (Coord ijk(bboxD.min()); ijk[0] <= bboxD.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxD.min()[1]; ijk[1] <= bboxD.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxD.min()[2]; ijk[2] <= bboxD.max()[2]; ++ijk[2]) { + + const float expected = bboxD.isInside(ijk) ? 1.0f : 0.0f; + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, 1.0f, tolerance); + + const float& vS = treeS.getValue(ijk); + const float& vP = treeP.getValue(ijk); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vS, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vP, tolerance); + } + } + } + + CoordBBox bboxP = gridP->evalActiveVoxelBoundingBox(); + const Index64 voxelCountP = gridP->activeVoxelCount(); + //std::cerr << "\nParallel: bbox=" << bboxP << " voxels=" << voxelCountP << std::endl; + CPPUNIT_ASSERT( bboxP != bboxD ); + CPPUNIT_ASSERT( bboxP == CoordBBox(Coord(0,0,0), magicVoxel) ); + CPPUNIT_ASSERT_EQUAL( dense.valueCount()+1, voxelCountP); + + CoordBBox bboxS = gridS->evalActiveVoxelBoundingBox(); + const Index64 voxelCountS = gridS->activeVoxelCount(); + //std::cerr << "\nSerial: bbox=" << bboxS << " voxels=" << voxelCountS << std::endl; + CPPUNIT_ASSERT( bboxS != bboxD ); + CPPUNIT_ASSERT( bboxS == CoordBBox(Coord(0,0,0), magicVoxel) ); + CPPUNIT_ASSERT_EQUAL( dense.valueCount()+1, voxelCountS); + + // Topology + CPPUNIT_ASSERT( bboxS.isInside(bboxS) ); + CPPUNIT_ASSERT( bboxP.isInside(bboxP) ); + CPPUNIT_ASSERT( bboxS.isInside(bboxP) ); + CPPUNIT_ASSERT( bboxP.isInside(bboxS) ); + + /// Check that the two grids agree + for (Coord ijk(bboxS.min()); ijk[0] <= bboxS.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxS.min()[1]; ijk[1] <= bboxS.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxS.min()[2]; ijk[2] <= bboxS.max()[2]; ++ijk[2]) { + + const float& vS = treeS.getValue(ijk); + const float& vP = treeP.getValue(ijk); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(vS, vP, tolerance); + + // the value we should get based on the original domain + const float expected = bboxD.isInside(ijk) ? 1.0f + : ijk == magicVoxel ? 5.0f : 0.0f; + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vP, tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, vS, tolerance); + } + } + } + + // Verify the tree topology matches. + + CPPUNIT_ASSERT_EQUAL(gridP->activeVoxelCount(), gridS->activeVoxelCount()); + CPPUNIT_ASSERT(gridP->evalActiveVoxelBoundingBox() == gridS->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT(treeP.hasSameTopology(treeS) ); + +} + +template +void +TestDense::testInvalidBBox() +{ + using namespace openvdb; + + //std::cerr << "\nTesting testInvalidBBox with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef tools::Dense DenseT; + const CoordBBox badBBox(Coord(1, 1, 1), Coord(-1, 2, 2)); + + CPPUNIT_ASSERT(badBBox.empty()); + CPPUNIT_ASSERT_THROW(DenseT dense(badBBox), ValueError); +} + +template +void +TestDense::testDense2Sparse2Dense() +{ + using namespace openvdb; + + //std::cerr << "\nTesting testDense2Sparse2Dense with " + // << (Layout == tools::LayoutXYZ ? "XYZ" : "ZYX") << " memory layout" + // << std::endl; + + typedef tools::Dense DenseT; + + const CoordBBox bboxBig(Coord(-12, 7, -32), Coord(12, 14, -15)); + const CoordBBox bboxSmall(Coord(-10, 8, -31), Coord(10, 12, -20)); + + + // A larger bbox + CoordBBox bboxBigger = bboxBig; + bboxBigger.expand(Coord(10)); + + + // Small is in big + CPPUNIT_ASSERT(bboxBig.isInside(bboxSmall)); + + // Big is in Bigger + CPPUNIT_ASSERT(bboxBigger.isInside(bboxBig)); + + // Construct a small dense grid + DenseT denseSmall(bboxSmall, 0.f); + { + // insert non-const values + const int n = static_cast(denseSmall.valueCount()); + float* d = denseSmall.data(); + for (int i = 0; i < n; ++i) { d[i] = static_cast(i); } + } + // Construct large dense grid + DenseT denseBig(bboxBig, 0.f); + { + // insert non-const values + const int n = static_cast(denseBig.valueCount()); + float* d = denseBig.data(); + for (int i = 0; i < n; ++i) { d[i] = static_cast(i); } + } + + // Make a sparse grid to copy this data into + FloatGrid::Ptr grid = FloatGrid::create(3.3f /*background*/); + tools::copyFromDense(denseBig, *grid, /*tolerance*/0.0f, /*serial = */ true); + tools::copyFromDense(denseSmall, *grid, /*tolerance*/0.0f, /*serial = */ false); + + const FloatTree& tree = grid->tree(); + // + CPPUNIT_ASSERT_EQUAL(bboxBig.volume(), grid->activeVoxelCount()); + + // iterate over the Bigger + for (Coord ijk(bboxBigger.min()); ijk[0] <= bboxBigger.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxBigger.min()[1]; ijk[1] <= bboxBigger.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxBigger.min()[2]; ijk[2] <= bboxBigger.max()[2]; ++ijk[2]) { + + float expected = 3.3f; + if (bboxSmall.isInside(ijk)) { + expected = denseSmall.getValue(ijk); + } else if (bboxBig.isInside(ijk)) { + expected = denseBig.getValue(ijk); + } + + const float& value = tree.getValue(ijk); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, value, 0.0001); + + } + } + } + + // Convert to Dense in small bbox + { + DenseT denseSmall2(bboxSmall); + tools::copyToDense(*grid, denseSmall2, true /* serial */); + + // iterate over the Bigger + for (Coord ijk(bboxSmall.min()); ijk[0] <= bboxSmall.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxSmall.min()[1]; ijk[1] <= bboxSmall.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxSmall.min()[2]; ijk[2] <= bboxSmall.max()[2]; ++ijk[2]) { + + const float& expected = denseSmall.getValue(ijk); + const float& value = denseSmall2.getValue(ijk); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, value, 0.0001); + } + } + } + } + // Convert to Dense in large bbox + { + DenseT denseBig2(bboxBig); + + tools::copyToDense(*grid, denseBig2, false /* serial */); + // iterate over the Bigger + for (Coord ijk(bboxBig.min()); ijk[0] <= bboxBig.max()[0]; ++ijk[0]) { + for (ijk[1] = bboxBig.min()[1]; ijk[1] <= bboxBig.max()[1]; ++ijk[1]) { + for (ijk[2] = bboxBig.min()[2]; ijk[2] <= bboxBig.max()[2]; ++ijk[2]) { + + float expected = -1.f; // should never be this + if (bboxSmall.isInside(ijk)) { + expected = denseSmall.getValue(ijk); + } else if (bboxBig.isInside(ijk)) { + expected = denseBig.getValue(ijk); + } + const float& value = denseBig2.getValue(ijk); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, value, 0.0001); + } + } + } + } +} +#undef BENCHMARK_TEST diff --git a/openvdb/unittest/TestDenseSparseTools.cc b/openvdb/unittest/TestDenseSparseTools.cc new file mode 100644 index 00000000..ec3c53b9 --- /dev/null +++ b/openvdb/unittest/TestDenseSparseTools.cc @@ -0,0 +1,380 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include "util.h" + +class TestDenseSparseTools: public CppUnit::TestCase +{ +public: + virtual void setUp(); + virtual void tearDown() { if (mDense) delete mDense;} + + CPPUNIT_TEST_SUITE(TestDenseSparseTools); + CPPUNIT_TEST(testExtractSparseFloatTree); + CPPUNIT_TEST(testExtractSparseBoolTree); + CPPUNIT_TEST(testExtractSparseAltDenseLayout); + CPPUNIT_TEST(testExtractSparseMaskedTree); + CPPUNIT_TEST(testDenseTransform); + CPPUNIT_TEST(testOver); + CPPUNIT_TEST_SUITE_END(); + + void testExtractSparseFloatTree(); + void testExtractSparseBoolTree(); + void testExtractSparseAltDenseLayout(); + void testExtractSparseMaskedTree(); + void testDenseTransform(); + void testOver(); + +private: + openvdb::tools::Dense* mDense; + openvdb::math::Coord mijk; +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestDenseSparseTools); + + +void +TestDenseSparseTools::setUp() +{ + namespace vdbmath = openvdb::math; + + // Domain for the dense grid + + vdbmath::CoordBBox domain(vdbmath::Coord(-100, -16, 12), + vdbmath::Coord( 90, 103, 100)); + + // Create dense grid, filled with 0.f + + mDense = new openvdb::tools::Dense(domain, 0.f); + + // Insert non-zero values + + mijk[0] = 1; mijk[1] = -2; mijk[2] = 14; +} + + +namespace { + + // Simple Rule for extracting data greater than a determined mMaskValue + // and producing a tree that holds type ValueType + namespace vdbmath = openvdb::math; + + class FloatRule + { + public: + // Standard tree type (e.g. BoolTree or FloatTree in openvdb.h) + typedef openvdb::FloatTree ResultTreeType; + typedef ResultTreeType::LeafNodeType ResultLeafNodeType; + + typedef float ResultValueType; + typedef float DenseValueType; + + FloatRule(const DenseValueType& value): mMaskValue(value){} + + template + void operator()(const DenseValueType& a, const IndexOrCoord& offset, + ResultLeafNodeType* leaf) const + { + if (a > mMaskValue) { + leaf->setValueOn(offset, a); + } + } + + private: + const DenseValueType mMaskValue; + }; + + class BoolRule + { + public: + // Standard tree type (e.g. BoolTree or FloatTree in openvdb.h) + typedef openvdb::BoolTree ResultTreeType; + typedef ResultTreeType::LeafNodeType ResultLeafNodeType; + + typedef bool ResultValueType; + typedef float DenseValueType; + + BoolRule(const DenseValueType& value): mMaskValue(value){} + + template + void operator()(const DenseValueType& a, const IndexOrCoord& offset, + ResultLeafNodeType* leaf) const + { + if (a > mMaskValue) { + leaf->setValueOn(offset, true); + } + } + + private: + const DenseValueType mMaskValue; + }; + + + // Square each value + struct SqrOp + { + float operator()(const float& in) const + { return in * in; } + }; +} + + +void +TestDenseSparseTools::testExtractSparseFloatTree() +{ + namespace vdbmath = openvdb::math; + + + FloatRule rule(0.5f); + + const float testvalue = 1.f; + mDense->setValue(mijk, testvalue); + const float background(0.f); + openvdb::FloatTree::Ptr result + = openvdb::tools::extractSparseTree(*mDense, rule, background); + + // The result should have only one active value. + + CPPUNIT_ASSERT(result->activeVoxelCount() == 1); + + // The result should have only one leaf + + CPPUNIT_ASSERT(result->leafCount() == 1); + + // The background + + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, result->background(), 1.e-6); + + // The stored value + + CPPUNIT_ASSERT_DOUBLES_EQUAL(testvalue, result->getValue(mijk), 1.e-6); +} + + +void +TestDenseSparseTools::testExtractSparseBoolTree() +{ + + const float testvalue = 1.f; + mDense->setValue(mijk, testvalue); + + const float cutoff(0.5); + + openvdb::BoolTree::Ptr result + = openvdb::tools::extractSparseTree(*mDense, BoolRule(cutoff), false); + + // The result should have only one active value. + + CPPUNIT_ASSERT(result->activeVoxelCount() == 1); + + // The result should have only one leaf + + CPPUNIT_ASSERT(result->leafCount() == 1); + + // The background + + CPPUNIT_ASSERT(result->background() == false); + + // The stored value + + CPPUNIT_ASSERT(result->getValue(mijk) == true); +} + + +void +TestDenseSparseTools::testExtractSparseAltDenseLayout() +{ + namespace vdbmath = openvdb::math; + + FloatRule rule(0.5f); + // Create a dense grid with the alternate data layout + // but the same domain as mDense + openvdb::tools::Dense dense(mDense->bbox(), 0.f); + + const float testvalue = 1.f; + dense.setValue(mijk, testvalue); + + const float background(0.f); + openvdb::FloatTree::Ptr result = openvdb::tools::extractSparseTree(dense, rule, background); + + // The result should have only one active value. + + CPPUNIT_ASSERT(result->activeVoxelCount() == 1); + + // The result should have only one leaf + + CPPUNIT_ASSERT(result->leafCount() == 1); + + // The background + + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, result->background(), 1.e-6); + + // The stored value + + CPPUNIT_ASSERT_DOUBLES_EQUAL(testvalue, result->getValue(mijk), 1.e-6); +} + + +void +TestDenseSparseTools::testExtractSparseMaskedTree() +{ + namespace vdbmath = openvdb::math; + + const float testvalue = 1.f; + mDense->setValue(mijk, testvalue); + + // Create a mask with two values. One in the domain of + // interest and one outside. The intersection of the active + // state topology of the mask and the domain of interest will define + // the topology of the extracted result. + + openvdb::FloatTree mask(0.f); + + // turn on a point inside the bouding domain of the dense grid + mask.setValue(mijk, 5.f); + + // turn on a point outside the bounding domain of the dense grid + vdbmath::Coord outsidePoint = mDense->bbox().min() - vdbmath::Coord(3, 3, 3); + mask.setValue(outsidePoint, 1.f); + + float background = 10.f; + + openvdb::FloatTree::Ptr result + = openvdb::tools::extractSparseTreeWithMask(*mDense, mask, background); + + // The result should have only one active value. + + CPPUNIT_ASSERT(result->activeVoxelCount() == 1); + + // The result should have only one leaf + + CPPUNIT_ASSERT(result->leafCount() == 1); + + // The background + + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, result->background(), 1.e-6); + + // The stored value + + CPPUNIT_ASSERT_DOUBLES_EQUAL(testvalue, result->getValue(mijk), 1.e-6); +} + + +void +TestDenseSparseTools::testDenseTransform() +{ + + namespace vdbmath = openvdb::math; + + vdbmath::CoordBBox domain(vdbmath::Coord(-4, -6, 10), + vdbmath::Coord( 1, 2, 15)); + + // Create dense grid, filled with value + const float value(2.f); const float valueSqr(value*value); + + openvdb::tools::Dense dense(domain, 0.f); + dense.fill(value); + + SqrOp op; + + vdbmath::CoordBBox smallBBox(vdbmath::Coord(-5, -5, 11), + vdbmath::Coord( 0, 1, 13) ); + + // Apply the transformation + openvdb::tools::transformDense(dense, smallBBox, op, true); + + vdbmath::Coord ijk; + // Test results. + for (ijk[0] = domain.min().x(); ijk[0] < domain.max().x() + 1; ++ijk[0]) { + for (ijk[1] = domain.min().y(); ijk[1] < domain.max().y() + 1; ++ijk[1]) { + for (ijk[2] = domain.min().z(); ijk[2] < domain.max().z() + 1; ++ijk[2]) { + + if (smallBBox.isInside(ijk)) { + // the functor was applied here + // the value should be base * base + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(ijk), valueSqr, 1.e-6); + } else { + // the original value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(ijk), value, 1.e-6); + } + } + } + } +} + + +void +TestDenseSparseTools::testOver() +{ + namespace vdbmath = openvdb::math; + + const vdbmath::CoordBBox domain(vdbmath::Coord(-10, 0, 5), vdbmath::Coord( 10, 5, 10)); + const openvdb::Coord ijk = domain.min() + openvdb::Coord(1, 1, 1); + // Create dense grid, filled with value + const float value(2.f); + const float strength(1.f); + const float beta(1.f); + + openvdb::FloatTree src(0.f); + src.setValue(ijk, 1.f); + openvdb::FloatTree alpha(0.f); + alpha.setValue(ijk, 1.f); + + + const float expected = openvdb::tools::ds::OpOver::apply( + value, alpha.getValue(ijk), src.getValue(ijk), strength, beta, 1.f); + + { // testing composite function + openvdb::tools::Dense dense(domain, 0.f); + dense.fill(value); + + openvdb::tools::compositeToDense( + dense, src, alpha, beta, strength, true /*threaded*/); + + // Check for over value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(ijk), expected, 1.e-6); + // Check for original value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(openvdb::Coord(1,1,1) + ijk), value, 1.e-6); + } + + { // testing sparse explict sparse composite + openvdb::tools::Dense dense(domain, 0.f); + dense.fill(value); + + typedef openvdb::tools::ds::CompositeFunctorTranslator + CompositeTool; + typedef CompositeTool::OpT Method; + openvdb::tools::SparseToDenseCompositor + sparseToDense(dense, src, alpha, beta, strength); + + sparseToDense.sparseComposite(true); + // Check for over value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(ijk), expected, 1.e-6); + // Check for original value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(openvdb::Coord(1,1,1) + ijk), value, 1.e-6); + } + + { // testing sparse explict dense composite + openvdb::tools::Dense dense(domain, 0.f); + dense.fill(value); + + typedef openvdb::tools::ds::CompositeFunctorTranslator + CompositeTool; + typedef CompositeTool::OpT Method; + openvdb::tools::SparseToDenseCompositor + sparseToDense(dense, src, alpha, beta, strength); + + sparseToDense.denseComposite(true); + // Check for over value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(ijk), expected, 1.e-6); + // Check for original value + CPPUNIT_ASSERT_DOUBLES_EQUAL(dense.getValue(openvdb::Coord(1,1,1) + ijk), value, 1.e-6); + } +} diff --git a/openvdb/unittest/TestDiagnostics.cc b/openvdb/unittest/TestDiagnostics.cc new file mode 100644 index 00000000..774711c8 --- /dev/null +++ b/openvdb/unittest/TestDiagnostics.cc @@ -0,0 +1,384 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +class TestDiagnostics: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestDiagnostics); + CPPUNIT_TEST(testCheck); + CPPUNIT_TEST(testDiagnose); + CPPUNIT_TEST(testCheckLevelSet); + CPPUNIT_TEST(testCheckFogVolume); + CPPUNIT_TEST(testUniqueInactiveValues); + CPPUNIT_TEST_SUITE_END(); + + void testCheck(); + void testDiagnose(); + void testCheckLevelSet(); + void testCheckFogVolume(); + void testUniqueInactiveValues(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestDiagnostics); + + +//////////////////////////////////////// + +void +TestDiagnostics::testCheck() +{ + const float val = 1.0f; + const float nan = std::numeric_limits::quiet_NaN(); + const float inf1= std::numeric_limits::infinity(); + const openvdb::math::Vec3 inf2(val, inf1, val); + + {//test CheckNan + openvdb::tools::CheckNan c; + CPPUNIT_ASSERT(!c(val)); + CPPUNIT_ASSERT( c(nan)); + CPPUNIT_ASSERT( c(nan)); + CPPUNIT_ASSERT(!c(inf1)); + CPPUNIT_ASSERT(!c(inf2)); + } + {//test CheckInf + openvdb::tools::CheckInf c; + CPPUNIT_ASSERT(!c(val)); + CPPUNIT_ASSERT(!c(nan)); + CPPUNIT_ASSERT(!c(nan)); + CPPUNIT_ASSERT( c(inf1)); + CPPUNIT_ASSERT( c(inf2)); + } + {//test CheckFinite + openvdb::tools::CheckFinite c; + CPPUNIT_ASSERT(!c(val)); + CPPUNIT_ASSERT( c(nan)); + CPPUNIT_ASSERT( c(nan)); + CPPUNIT_ASSERT( c(inf1)); + CPPUNIT_ASSERT( c(inf2)); + } + {//test CheckMin + openvdb::tools::CheckMin c(0.0f); + CPPUNIT_ASSERT(!c( 0.5f)); + CPPUNIT_ASSERT(!c( 0.0f)); + CPPUNIT_ASSERT(!c( 1.0f)); + CPPUNIT_ASSERT(!c( 1.1f)); + CPPUNIT_ASSERT( c(-0.1f)); + } + {//test CheckMax + openvdb::tools::CheckMax c(0.0f); + CPPUNIT_ASSERT( c( 0.5f)); + CPPUNIT_ASSERT(!c( 0.0f)); + CPPUNIT_ASSERT( c( 1.0f)); + CPPUNIT_ASSERT( c( 1.1f)); + CPPUNIT_ASSERT(!c(-0.1f)); + } + {//test CheckRange + // first check throw on construction from an invalid range + CPPUNIT_ASSERT_THROW(openvdb::tools::CheckRange c(1.0f, 0.0f), + openvdb::ValueError); + openvdb::tools::CheckRange c(0.0f, 1.0f); + CPPUNIT_ASSERT(!c(0.5f)); + CPPUNIT_ASSERT(!c(0.0f)); + CPPUNIT_ASSERT(!c(1.0f)); + CPPUNIT_ASSERT( c(1.1f)); + CPPUNIT_ASSERT(c(-0.1f)); + } +}//testCheck + +void +TestDiagnostics::testDiagnose() +{ + using namespace openvdb; + const float val = 1.0f; + const float nan = std::numeric_limits::quiet_NaN(); + const float inf = std::numeric_limits::infinity(); + + {//empty grid + FloatGrid grid; + tools::Diagnose d(grid); + tools::CheckNan c; + std::string str = d.check(c); + //std::cerr << "Empty grid:\n" << str; + CPPUNIT_ASSERT_EQUAL(std::string(), str); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {//non-empty grid + FloatGrid grid; + grid.tree().setValue(Coord(-1,3,6), val); + tools::Diagnose d(grid); + tools::CheckNan c; + std::string str = d.check(c); + //std::cerr << "Non-Empty grid:\n" << str; + CPPUNIT_ASSERT_EQUAL(std::string(), str); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {//nan grid + FloatGrid grid; + grid.tree().setValue(Coord(-1,3,6), nan); + tools::Diagnose d(grid); + tools::CheckNan c; + std::string str = d.check(c); + //std::cerr << "NaN grid:\n" << str; + CPPUNIT_ASSERT(!str.empty()); + CPPUNIT_ASSERT_EQUAL(1, int(d.failureCount())); + } + + {//nan and infinite grid + FloatGrid grid; + grid.tree().setValue(Coord(-1,3,6), nan); + grid.tree().setValue(Coord(10,30,60), inf); + tools::Diagnose d(grid); + tools::CheckFinite c; + std::string str = d.check(c); + //std::cerr << "Not Finite grid:\n" << str; + CPPUNIT_ASSERT(!str.empty()); + CPPUNIT_ASSERT_EQUAL(2, int(d.failureCount())); + } + {//out-of-range grid + FloatGrid grid(10.0f); + grid.tree().setValue(Coord(-1,3,6), 1.0f); + grid.tree().setValue(Coord(10,30,60), 1.5); + grid.tree().fill(math::CoordBBox::createCube(math::Coord(0),8), 20.0f, true); + tools::Diagnose d(grid); + tools::CheckRange c(0.0f, 1.0f); + std::string str = d.check(c); + //std::cerr << "out-of-range grid:\n" << str; + CPPUNIT_ASSERT(!str.empty()); + CPPUNIT_ASSERT_EQUAL(3, int(d.failureCount())); + } + + const float radius = 4.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.1f, width = 2.0f, gamma=voxelSize*width; + + FloatGrid::Ptr gridSphere = + tools::createLevelSetSphere(radius, center, voxelSize, width); + + //gridSphere->print(std::cerr, 2); + + {// Check min/max of active values + math::Extrema ex = tools::extrema(gridSphere->cbeginValueOn()); + //std::cerr << "Min = " << ex.min() << " max = " << ex.max() << std::endl; + CPPUNIT_ASSERT(ex.min() > -voxelSize*width); + CPPUNIT_ASSERT(ex.max() < voxelSize*width); + + } + {// Check min/max of all values + math::Extrema ex = tools::extrema(gridSphere->cbeginValueAll()); + //std::cerr << "Min = " << ex.min() << " max = " << ex.max() << std::endl; + CPPUNIT_ASSERT(ex.min() >= -voxelSize*width); + CPPUNIT_ASSERT(ex.max() <= voxelSize*width); + + } + {// check range of all values in a sphere w/o mask + tools::CheckRange c(-gamma, gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check range of on values in a sphere w/o mask + tools::CheckRange c(-gamma, gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check range of off tiles in a sphere w/o mask + tools::CheckRange c(-gamma, gamma); + tools::Diagnose d(*gridSphere); + {// check off tile iterator + FloatGrid::ValueOffCIter i(gridSphere->tree()); + i.setMaxDepth(FloatGrid::ValueOffCIter::LEAF_DEPTH - 1); + for (; i; ++i) CPPUNIT_ASSERT( math::Abs(*i) <= gamma); + } + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check range of sphere w/o mask + tools::CheckRange c(0.0f, gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(!str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT(d.failureCount() < gridSphere->activeVoxelCount()); + } + {// check range of sphere w mask + tools::CheckRange c(0.0f, gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c, true); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(!str.empty()); + CPPUNIT_ASSERT_EQUAL(d.valueCount(), d.valueCount()); + CPPUNIT_ASSERT(d.failureCount() < gridSphere->activeVoxelCount()); + } + {// check min of sphere w/o mask + tools::CheckMin c(-gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "Min values:\n" << str; + CPPUNIT_ASSERT_EQUAL(std::string(), str); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check max of sphere w/o mask + tools::CheckMax c(gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "MAX values:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check norm of gradient of sphere w/o mask + tools::CheckEikonal c(*gridSphere, 0.97f, 1.03f); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c, false, true, false, false); + //std::cerr << "NormGrad:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check norm of gradient of sphere w/o mask + tools::CheckNormGrad c(*gridSphere, 0.75f, 1.25f); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c, false, true, false, false); + //std::cerr << "NormGrad:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check inactive values + tools::CheckMagnitude c(gamma); + tools::Diagnose d(*gridSphere); + std::string str = d.check(c); + //std::cerr << "Magnitude:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } +}// testDiagnose + +void +TestDiagnostics::testCheckLevelSet() +{ + using namespace openvdb; + const float radius = 4.3f; + const Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.1f, width = LEVEL_SET_HALF_WIDTH; + + FloatGrid::Ptr grid = + tools::createLevelSetSphere(radius, center, voxelSize, width); + + //tools::CheckLevelSet c(*grid); + //std::string str = c.check(); + std::string str = tools::checkLevelSet(*grid); + CPPUNIT_ASSERT(str.empty()); + //std::cerr << "\n" << str << std::endl; + + grid->tree().setValue(Coord(0,0,0), voxelSize*(width+0.5f)); + //str = c.check(); + str = tools::checkLevelSet(*grid); + CPPUNIT_ASSERT(!str.empty()); + //std::cerr << "\n" << str << std::endl; + + //str = c.check(6); + str = tools::checkLevelSet(*grid, 6); + CPPUNIT_ASSERT(str.empty()); + +}// testCheckLevelSet + +void +TestDiagnostics::testCheckFogVolume() +{ + using namespace openvdb; + const float radius = 4.3f; + const Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.1f, width = LEVEL_SET_HALF_WIDTH; + + FloatGrid::Ptr grid = + tools::createLevelSetSphere(radius, center, voxelSize, width); + tools::sdfToFogVolume(*grid); + + //tools::CheckFogVolume c(*grid); + //std::string str = c.check(); + std::string str = tools::checkFogVolume(*grid); + CPPUNIT_ASSERT(str.empty()); + //std::cerr << "\n" << str << std::endl; + + grid->tree().setValue(Coord(0,0,0), 1.5f); + //str = c.check(); + str = tools::checkFogVolume(*grid); + CPPUNIT_ASSERT(!str.empty()); + //std::cerr << "\n" << str << std::endl; + + str = tools::checkFogVolume(*grid, 5); + //str = c.check(5); + CPPUNIT_ASSERT(str.empty()); + +}// testCheckFogVolume + +void +TestDiagnostics::testUniqueInactiveValues() +{ + openvdb::FloatGrid grid; + + grid.tree().setValueOff(openvdb::Coord(0,0,0), -1); + grid.tree().setValueOff(openvdb::Coord(0,0,1), -2); + grid.tree().setValueOff(openvdb::Coord(0,1,0), -3); + grid.tree().setValue(openvdb::Coord(1,0,0), 1); + + std::vector values; + + CPPUNIT_ASSERT(openvdb::tools::uniqueInactiveValues(grid, values, 4)); + + CPPUNIT_ASSERT_EQUAL(4, int(values.size())); + + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[0], -3.0f)); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[1], -2.0f)); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[2], -1.0f)); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[3], 0.0f)); + + + // test with level set sphere + const float radius = 4.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 2.0f; + + openvdb::FloatGrid::Ptr gridSphere = + openvdb::tools::createLevelSetSphere(radius, center, voxelSize, width); + + CPPUNIT_ASSERT(openvdb::tools::uniqueInactiveValues(*gridSphere.get(), values, 2)); + + CPPUNIT_ASSERT_EQUAL(2, int(values.size())); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[0], -voxelSize * width)); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[1], voxelSize * width)); + + // test with fog volume + openvdb::tools::sdfToFogVolume(*gridSphere); + + CPPUNIT_ASSERT(openvdb::tools::uniqueInactiveValues(*gridSphere.get(), values, 1)); + + CPPUNIT_ASSERT_EQUAL(1, int(values.size())); + CPPUNIT_ASSERT(openvdb::math::isApproxEqual(values[0], 0.0f)); +} diff --git a/openvdb/unittest/TestDivergence.cc b/openvdb/unittest/TestDivergence.cc new file mode 100644 index 00000000..bd4e60b3 --- /dev/null +++ b/openvdb/unittest/TestDivergence.cc @@ -0,0 +1,679 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +namespace { +const int GRID_DIM = 10; +} + + +class TestDivergence: public CppUnit::TestFixture +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestDivergence); + CPPUNIT_TEST(testISDivergence); // Divergence in Index Space + CPPUNIT_TEST(testISDivergenceStencil); + CPPUNIT_TEST(testWSDivergence); // Divergence in World Space + CPPUNIT_TEST(testWSDivergenceStencil); + CPPUNIT_TEST(testDivergenceTool); // Divergence tool + CPPUNIT_TEST(testDivergenceMaskedTool); // Divergence tool + CPPUNIT_TEST(testStaggeredDivergence); + CPPUNIT_TEST_SUITE_END(); + + void testISDivergence(); + void testISDivergenceStencil(); + void testWSDivergence(); + void testWSDivergenceStencil(); + void testDivergenceTool(); + void testDivergenceMaskedTool(); + void testStaggeredDivergence(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestDivergence); + + +void +TestDivergence::testDivergenceTool() +{ + using namespace openvdb; + + VectorGrid::Ptr inGrid = VectorGrid::create(); + VectorTree& inTree = inGrid->tree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; xactiveVoxelCount())); + + FloatGrid::ConstAccessor accessor = divGrid->getConstAccessor(); + --dim;//ignore boundary divergence + for (int x = -dim; xtree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; xfill(maskBBox, true /*value*/, true /*activate*/); + + FloatGrid::Ptr divGrid = tools::divergence(*inGrid, *maskGrid); + CPPUNIT_ASSERT_EQUAL(math::Pow3(dim), int(divGrid->activeVoxelCount())); + + FloatGrid::ConstAccessor accessor = divGrid->getConstAccessor(); + --dim;//ignore boundary divergence + for (int x = -dim; xsetGridClass( GRID_STAGGERED ); + VectorTree& inTree = inGrid->tree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; xactiveVoxelCount())); + + FloatGrid::ConstAccessor accessor = divGrid->getConstAccessor(); + --dim;//ignore boundary divergence + for (int x = -dim; xtree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; xgetConstAccessor(); + CPPUNIT_ASSERT(!inTree.empty()); + CPPUNIT_ASSERT_EQUAL(math::Pow3(2*dim), int(inTree.activeVoxelCount())); + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + } + } + } + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(inAccessor, xyz); + + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + d = math::ISDivergence::result(inAccessor, xyz); + + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + d = math::ISDivergence::result(inAccessor, xyz); + + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + } + } + } + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(inAccessor, xyz); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2, d, /*tolerance=*/0.00001); + + d = math::ISDivergence::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2, d, /*tolerance=*/0.00001); + } + } + } +} + + +void +TestDivergence::testISDivergenceStencil() +{ + using namespace openvdb; + + VectorGrid::Ptr inGrid = VectorGrid::create(); + VectorTree& inTree = inGrid->tree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; x sevenpt(*inGrid); + math::ThirteenPointStencil thirteenpt(*inGrid); + math::NineteenPointStencil nineteenpt(*inGrid); + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(sevenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + } + } + } + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(thirteenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(thirteenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(thirteenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + } + } + } + + --dim;//ignore boundary divergence + // test index space divergence + for (int x = -dim; x::result(nineteenpt); + ASSERT_DOUBLES_EXACTLY_EQUAL(2, d); + + d = math::ISDivergence::result(nineteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2, d, /*tolerance=*/0.00001); + + d = math::ISDivergence::result(nineteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2, d, /*tolerance=*/0.00001); + } + } + } +} + + +void +TestDivergence::testWSDivergence() +{ + using namespace openvdb; + + typedef VectorGrid::ConstAccessor Accessor; + + { // non-unit voxel size + double voxel_size = 0.5; + VectorGrid::Ptr inGrid = VectorGrid::create(); + inGrid->setTransform(math::Transform::createLinearTransform(voxel_size)); + + VectorTree& inTree = inGrid->tree(); + CPPUNIT_ASSERT(inTree.empty()); + + int dim = GRID_DIM; + for (int x = -dim; xindexToWorld(Vec3d(x,y,z)); + inTree.setValue(Coord(x,y,z), + VectorTree::ValueType(float(location.x()), float(location.y()), 0.f)); + } + } + } + + Accessor inAccessor = inGrid->getConstAccessor(); + CPPUNIT_ASSERT(!inTree.empty()); + CPPUNIT_ASSERT_EQUAL(math::Pow3(2*dim), int(inTree.activeVoxelCount())); + + --dim;//ignore boundary divergence + + // test with a map + // test with a map + math::AffineMap map(voxel_size*math::Mat3d::identity()); + math::UniformScaleMap uniform_map(voxel_size); + math::UniformScaleTranslateMap uniform_translate_map(voxel_size, Vec3d(0,0,0)); + + for (int x = -dim; xtypeName().compare("double") == 0); + + DoubleMetadata *s = dynamic_cast(m.get()); + //CPPUNIT_ASSERT(s->value() == 1.23); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.23,s->value(),0); + s->value() = 4.56; + //CPPUNIT_ASSERT(s->value() == 4.56); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.56,s->value(),0); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + //CPPUNIT_ASSERT(s->value() == 4.56); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.56,s->value(),0); +} diff --git a/openvdb/unittest/TestExceptions.cc b/openvdb/unittest/TestExceptions.cc new file mode 100644 index 00000000..854bf6ff --- /dev/null +++ b/openvdb/unittest/TestExceptions.cc @@ -0,0 +1,80 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + + +class TestExceptions : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestExceptions); + CPPUNIT_TEST(testArithmeticError); + CPPUNIT_TEST(testIndexError); + CPPUNIT_TEST(testIoError); + CPPUNIT_TEST(testKeyError); + CPPUNIT_TEST(testLookupError); + CPPUNIT_TEST(testNotImplementedError); + CPPUNIT_TEST(testReferenceError); + CPPUNIT_TEST(testRuntimeError); + CPPUNIT_TEST(testTypeError); + CPPUNIT_TEST(testValueError); + CPPUNIT_TEST_SUITE_END(); + + void testArithmeticError() { testException(); } + void testIndexError() { testException(); } + void testIoError() { testException(); } + void testKeyError() { testException(); } + void testLookupError() { testException(); } + void testNotImplementedError() { testException(); } + void testReferenceError() { testException(); } + void testRuntimeError() { testException(); } + void testTypeError() { testException(); } + void testValueError() { testException(); } + +private: + template void testException(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestExceptions); + + +template struct ExceptionTraits +{ static std::string name() { return ""; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "ArithmeticError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "IndexError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "IoError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "KeyError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "LookupError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "NotImplementedError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "ReferenceError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "RuntimeError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "TypeError"; } }; +template<> struct ExceptionTraits +{ static std::string name() { return "ValueError"; } }; + + +template +void +TestExceptions::testException() +{ + std::string ErrorMsg("Error message"); + + CPPUNIT_ASSERT_THROW(OPENVDB_THROW(ExceptionT, ErrorMsg), ExceptionT); + + try { + OPENVDB_THROW(ExceptionT, ErrorMsg); + } catch (openvdb::Exception& e) { + const std::string expectedMsg = ExceptionTraits::name() + ": " + ErrorMsg; + CPPUNIT_ASSERT_EQUAL(expectedMsg, std::string(e.what())); + } +} diff --git a/openvdb/unittest/TestFile.cc b/openvdb/unittest/TestFile.cc new file mode 100644 index 00000000..b18c1161 --- /dev/null +++ b/openvdb/unittest/TestFile.cc @@ -0,0 +1,2729 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include // for tools::sdfToFogVolume() +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include +#include // for tbb::this_tbb_thread::sleep() +#include // for std::sort() +#include // for remove() and rename() +#include +#include // for std::bind() +#include +#include +#include +#include +#include +#include +#include +#include // for stat() +#include +#ifndef _WIN32 +#include +#endif +#ifdef OPENVDB_USE_BLOSC +#include +#include // for memset() +#endif + + +class TestFile: public CppUnit::TestCase +{ +public: + void setUp() override {} + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestFile); + CPPUNIT_TEST(testHeader); + CPPUNIT_TEST(testWriteGrid); + CPPUNIT_TEST(testWriteMultipleGrids); + CPPUNIT_TEST(testWriteFloatAsHalf); + CPPUNIT_TEST(testWriteInstancedGrids); + CPPUNIT_TEST(testReadGridDescriptors); + CPPUNIT_TEST(testGridNaming); + CPPUNIT_TEST(testEmptyFile); + CPPUNIT_TEST(testEmptyGridIO); + CPPUNIT_TEST(testOpen); + CPPUNIT_TEST(testNonVdbOpen); + CPPUNIT_TEST(testGetMetadata); + CPPUNIT_TEST(testReadAll); + CPPUNIT_TEST(testWriteOpenFile); + CPPUNIT_TEST(testReadGridMetadata); + CPPUNIT_TEST(testReadGrid); + CPPUNIT_TEST(testReadClippedGrid); + CPPUNIT_TEST(testMultiPassIO); + CPPUNIT_TEST(testHasGrid); + CPPUNIT_TEST(testNameIterator); + CPPUNIT_TEST(testReadOldFileFormat); + CPPUNIT_TEST(testCompression); + CPPUNIT_TEST(testAsync); +#ifdef OPENVDB_USE_BLOSC + CPPUNIT_TEST(testBlosc); +#endif + CPPUNIT_TEST(testDelayedLoadMetadata); + CPPUNIT_TEST_SUITE_END(); + + void testHeader(); + void testWriteGrid(); + void testWriteMultipleGrids(); + void testWriteFloatAsHalf(); + void testWriteInstancedGrids(); + void testReadGridDescriptors(); + void testGridNaming(); + void testEmptyFile(); + void testEmptyGridIO(); + void testOpen(); + void testNonVdbOpen(); + void testGetMetadata(); + void testReadAll(); + void testWriteOpenFile(); + void testReadGridMetadata(); + void testReadGrid(); + void testReadClippedGrid(); + void testMultiPassIO(); + void testHasGrid(); + void testNameIterator(); + void testReadOldFileFormat(); + void testCompression(); + void testAsync(); +#ifdef OPENVDB_USE_BLOSC + void testBlosc(); +#endif + void testDelayedLoadMetadata(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestFile); + + +//////////////////////////////////////// + + +void +TestFile::testHeader() +{ + using namespace openvdb::io; + + File file("something.vdb2"); + + std::ostringstream + ostr(std::ios_base::binary), + ostr2(std::ios_base::binary); + + file.writeHeader(ostr2, /*seekable=*/true); + std::string uuidStr = file.getUniqueTag(); + + file.writeHeader(ostr, /*seekable=*/true); + // Verify that a file gets a new UUID each time it is written. + CPPUNIT_ASSERT(!file.isIdentical(uuidStr)); + uuidStr = file.getUniqueTag(); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + bool unique=true; + CPPUNIT_ASSERT_NO_THROW(unique=file.readHeader(istr)); + + CPPUNIT_ASSERT(!unique);//reading same file again + + uint32_t version = openvdb::OPENVDB_FILE_VERSION; + + CPPUNIT_ASSERT_EQUAL(version, file.fileVersion()); + CPPUNIT_ASSERT_EQUAL(openvdb::OPENVDB_LIBRARY_MAJOR_VERSION, file.libraryVersion().first); + CPPUNIT_ASSERT_EQUAL(openvdb::OPENVDB_LIBRARY_MINOR_VERSION, file.libraryVersion().second); + CPPUNIT_ASSERT_EQUAL(uuidStr, file.getUniqueTag()); + + //std::cerr << "\nuuid=" << uuidStr << std::endl; + + CPPUNIT_ASSERT(file.isIdentical(uuidStr)); + + remove("something.vdb2"); +} + + +void +TestFile::testWriteGrid() +{ + using namespace openvdb; + using namespace openvdb::io; + + using TreeType = Int32Tree; + using GridType = Grid; + + logging::LevelScope suppressLogging{logging::Level::Fatal}; + + File file("something.vdb2"); + + std::ostringstream ostr(std::ios_base::binary); + + // Create a grid with transform. + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + + GridType::Ptr grid = createGrid(/*bg=*/1); + TreeType& tree = grid->tree(); + grid->setTransform(trans); + tree.setValue(Coord(10, 1, 2), 10); + tree.setValue(Coord(0, 0, 0), 5); + + // Add some metadata. + Metadata::clearRegistry(); + StringMetadata::registerType(); + const std::string meta0Val, meta1Val("Hello, world."); + Metadata::Ptr stringMetadata = Metadata::createMetadata(typeNameAsString()); + CPPUNIT_ASSERT(stringMetadata); + if (stringMetadata) { + grid->insertMeta("meta0", *stringMetadata); + grid->metaValue("meta0") = meta0Val; + grid->insertMeta("meta1", *stringMetadata); + grid->metaValue("meta1") = meta1Val; + } + + // Create the grid descriptor out of this grid. + GridDescriptor gd(Name("temperature"), grid->type()); + + // Write out the grid. + file.writeGrid(gd, grid, ostr, /*seekable=*/true); + + CPPUNIT_ASSERT(gd.getGridPos() != 0); + CPPUNIT_ASSERT(gd.getBlockPos() != 0); + CPPUNIT_ASSERT(gd.getEndPos() != 0); + + // Read in the grid descriptor. + GridDescriptor gd2; + std::istringstream istr(ostr.str(), std::ios_base::binary); + + // Since the input is only a fragment of a VDB file (in particular, + // it doesn't have a header), set the file format version number explicitly. + io::setCurrentVersion(istr); + + GridBase::Ptr gd2_grid; + CPPUNIT_ASSERT_THROW(gd2.read(istr), openvdb::LookupError); + + // Register the grid and the transform and the blocks. + GridBase::clearRegistry(); + GridType::registerGrid(); + + // Register transform maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + istr.seekg(0, std::ios_base::beg); + CPPUNIT_ASSERT_NO_THROW(gd2_grid = gd2.read(istr)); + + CPPUNIT_ASSERT_EQUAL(gd.gridName(), gd2.gridName()); + CPPUNIT_ASSERT_EQUAL(GridType::gridType(), gd2_grid->type()); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), gd2.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), gd2.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), gd2.getEndPos()); + + // Position the stream to beginning of the grid storage and read the grid. + gd2.seekToGrid(istr); + Archive::readGridCompression(istr); + gd2_grid->readMeta(istr); + gd2_grid->readTransform(istr); + gd2_grid->readTopology(istr); + + // Remove delay load metadata if it exists. + if ((*gd2_grid)["file_delayed_load"]) { + gd2_grid->removeMeta("file_delayed_load"); + } + + // Ensure that we have the same metadata. + CPPUNIT_ASSERT_EQUAL(grid->metaCount(), gd2_grid->metaCount()); + CPPUNIT_ASSERT((*gd2_grid)["meta0"]); + CPPUNIT_ASSERT((*gd2_grid)["meta1"]); + CPPUNIT_ASSERT_EQUAL(meta0Val, gd2_grid->metaValue("meta0")); + CPPUNIT_ASSERT_EQUAL(meta1Val, gd2_grid->metaValue("meta1")); + + // Ensure that we have the same topology and transform. + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().leafCount(), gd2_grid->baseTree().leafCount()); + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().nonLeafCount(), gd2_grid->baseTree().nonLeafCount()); + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().treeDepth(), gd2_grid->baseTree().treeDepth()); + + //CPPUNIT_ASSERT_EQUAL(0.1, gd2_grid->getTransform()->getVoxelSizeX()); + //CPPUNIT_ASSERT_EQUAL(0.1, gd2_grid->getTransform()->getVoxelSizeY()); + //CPPUNIT_ASSERT_EQUAL(0.1, gd2_grid->getTransform()->getVoxelSizeZ()); + + // Read in the data blocks. + gd2.seekToBlocks(istr); + gd2_grid->readBuffers(istr); + TreeType::Ptr tree2 = DynamicPtrCast(gd2_grid->baseTreePtr()); + CPPUNIT_ASSERT(tree2.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(10, tree2->getValue(Coord(10, 1, 2))); + CPPUNIT_ASSERT_EQUAL(5, tree2->getValue(Coord(0, 0, 0))); + + CPPUNIT_ASSERT_EQUAL(1, tree2->getValue(Coord(1000, 1000, 16000))); + // Clear registries. + GridBase::clearRegistry(); + Metadata::clearRegistry(); + math::MapRegistry::clear(); + + remove("something.vdb2"); +} + + +void +TestFile::testWriteMultipleGrids() +{ + using namespace openvdb; + using namespace openvdb::io; + + using TreeType = Int32Tree; + using GridType = Grid; + + logging::LevelScope suppressLogging{logging::Level::Fatal}; + + File file("something.vdb2"); + + std::ostringstream ostr(std::ios_base::binary); + + // Create a grid with transform. + GridType::Ptr grid = createGrid(/*bg=*/1); + TreeType& tree = grid->tree(); + tree.setValue(Coord(10, 1, 2), 10); + tree.setValue(Coord(0, 0, 0), 5); + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + + GridType::Ptr grid2 = createGrid(/*bg=*/2); + TreeType& tree2 = grid2->tree(); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(1000, 1000, 1000), 50); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.2); + grid2->setTransform(trans2); + + // Create the grid descriptor out of this grid. + GridDescriptor gd(Name("temperature"), grid->type()); + GridDescriptor gd2(Name("density"), grid2->type()); + + // Write out the grids. + file.writeGrid(gd, grid, ostr, /*seekable=*/true); + file.writeGrid(gd2, grid2, ostr, /*seekable=*/true); + + CPPUNIT_ASSERT(gd.getGridPos() != 0); + CPPUNIT_ASSERT(gd.getBlockPos() != 0); + CPPUNIT_ASSERT(gd.getEndPos() != 0); + + CPPUNIT_ASSERT(gd2.getGridPos() != 0); + CPPUNIT_ASSERT(gd2.getBlockPos() != 0); + CPPUNIT_ASSERT(gd2.getEndPos() != 0); + + // register the grid + GridBase::clearRegistry(); + GridType::registerGrid(); + + // register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Read in the first grid descriptor. + GridDescriptor gd_in; + std::istringstream istr(ostr.str(), std::ios_base::binary); + io::setCurrentVersion(istr); + + GridBase::Ptr gd_in_grid; + CPPUNIT_ASSERT_NO_THROW(gd_in_grid = gd_in.read(istr)); + + // Ensure read in the right values. + CPPUNIT_ASSERT_EQUAL(gd.gridName(), gd_in.gridName()); + CPPUNIT_ASSERT_EQUAL(GridType::gridType(), gd_in_grid->type()); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), gd_in.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), gd_in.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), gd_in.getEndPos()); + + // Position the stream to beginning of the grid storage and read the grid. + gd_in.seekToGrid(istr); + Archive::readGridCompression(istr); + gd_in_grid->readMeta(istr); + gd_in_grid->readTransform(istr); + gd_in_grid->readTopology(istr); + + // Ensure that we have the same topology and transform. + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().leafCount(), gd_in_grid->baseTree().leafCount()); + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().nonLeafCount(), gd_in_grid->baseTree().nonLeafCount()); + CPPUNIT_ASSERT_EQUAL( + grid->baseTree().treeDepth(), gd_in_grid->baseTree().treeDepth()); + + // CPPUNIT_ASSERT_EQUAL(0.1, gd_in_grid->getTransform()->getVoxelSizeX()); + // CPPUNIT_ASSERT_EQUAL(0.1, gd_in_grid->getTransform()->getVoxelSizeY()); + // CPPUNIT_ASSERT_EQUAL(0.1, gd_in_grid->getTransform()->getVoxelSizeZ()); + + // Read in the data blocks. + gd_in.seekToBlocks(istr); + gd_in_grid->readBuffers(istr); + TreeType::Ptr grid_in = DynamicPtrCast(gd_in_grid->baseTreePtr()); + CPPUNIT_ASSERT(grid_in.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(10, grid_in->getValue(Coord(10, 1, 2))); + CPPUNIT_ASSERT_EQUAL(5, grid_in->getValue(Coord(0, 0, 0))); + CPPUNIT_ASSERT_EQUAL(1, grid_in->getValue(Coord(1000, 1000, 16000))); + + ///////////////////////////////////////////////////////////////// + // Now read in the second grid descriptor. Make use of hte end offset. + /////////////////////////////////////////////////////////////// + + gd_in.seekToEnd(istr); + + GridDescriptor gd2_in; + GridBase::Ptr gd2_in_grid; + CPPUNIT_ASSERT_NO_THROW(gd2_in_grid = gd2_in.read(istr)); + + // Ensure that we read in the right values. + CPPUNIT_ASSERT_EQUAL(gd2.gridName(), gd2_in.gridName()); + CPPUNIT_ASSERT_EQUAL(TreeType::treeType(), gd2_in_grid->type()); + CPPUNIT_ASSERT_EQUAL(gd2.getGridPos(), gd2_in.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getBlockPos(), gd2_in.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getEndPos(), gd2_in.getEndPos()); + + // Position the stream to beginning of the grid storage and read the grid. + gd2_in.seekToGrid(istr); + Archive::readGridCompression(istr); + gd2_in_grid->readMeta(istr); + gd2_in_grid->readTransform(istr); + gd2_in_grid->readTopology(istr); + + // Ensure that we have the same topology and transform. + CPPUNIT_ASSERT_EQUAL( + grid2->baseTree().leafCount(), gd2_in_grid->baseTree().leafCount()); + CPPUNIT_ASSERT_EQUAL( + grid2->baseTree().nonLeafCount(), gd2_in_grid->baseTree().nonLeafCount()); + CPPUNIT_ASSERT_EQUAL( + grid2->baseTree().treeDepth(), gd2_in_grid->baseTree().treeDepth()); + // CPPUNIT_ASSERT_EQUAL(0.2, gd2_in_grid->getTransform()->getVoxelSizeX()); + // CPPUNIT_ASSERT_EQUAL(0.2, gd2_in_grid->getTransform()->getVoxelSizeY()); + // CPPUNIT_ASSERT_EQUAL(0.2, gd2_in_grid->getTransform()->getVoxelSizeZ()); + + // Read in the data blocks. + gd2_in.seekToBlocks(istr); + gd2_in_grid->readBuffers(istr); + TreeType::Ptr grid2_in = DynamicPtrCast(gd2_in_grid->baseTreePtr()); + CPPUNIT_ASSERT(grid2_in.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(50, grid2_in->getValue(Coord(1000, 1000, 1000))); + CPPUNIT_ASSERT_EQUAL(10, grid2_in->getValue(Coord(0, 0, 0))); + CPPUNIT_ASSERT_EQUAL(2, grid2_in->getValue(Coord(100000, 100000, 16000))); + + // Clear registries. + GridBase::clearRegistry(); + + math::MapRegistry::clear(); + remove("something.vdb2"); +} + + +void +TestFile::testWriteFloatAsHalf() +{ + using namespace openvdb; + using namespace openvdb::io; + + using TreeType = Vec3STree; + using GridType = Grid; + + // Register all grid types. + initialize(); + // Ensure that the registry is cleared on exit. + struct Local { static void uninitialize(char*) { openvdb::uninitialize(); } }; + SharedPtr onExit(nullptr, Local::uninitialize); + + // Create two test grids. + GridType::Ptr grid1 = createGrid(/*bg=*/Vec3s(1, 1, 1)); + TreeType& tree1 = grid1->tree(); + CPPUNIT_ASSERT(grid1.get() != nullptr); + grid1->setTransform(math::Transform::createLinearTransform(0.1)); + grid1->setName("grid1"); + + GridType::Ptr grid2 = createGrid(/*bg=*/Vec3s(2, 2, 2)); + CPPUNIT_ASSERT(grid2.get() != nullptr); + TreeType& tree2 = grid2->tree(); + grid2->setTransform(math::Transform::createLinearTransform(0.2)); + // Flag this grid for 16-bit float output. + grid2->setSaveFloatAsHalf(true); + grid2->setName("grid2"); + + for (int x = 0; x < 40; ++x) { + for (int y = 0; y < 40; ++y) { + for (int z = 0; z < 40; ++z) { + tree1.setValue(Coord(x, y, z), Vec3s(float(x), float(y), float(z))); + tree2.setValue(Coord(x, y, z), Vec3s(float(x), float(y), float(z))); + } + } + } + + GridPtrVec grids; + grids.push_back(grid1); + grids.push_back(grid2); + + const char* filename = "something.vdb2"; + { + // Write both grids to a file. + File vdbFile(filename); + vdbFile.write(grids); + } + { + // Verify that both grids can be read back successfully from the file. + File vdbFile(filename); + vdbFile.open(); + GridBase::Ptr + bgrid1 = vdbFile.readGrid("grid1"), + bgrid2 = vdbFile.readGrid("grid2"); + vdbFile.close(); + + CPPUNIT_ASSERT(bgrid1.get() != nullptr); + CPPUNIT_ASSERT(bgrid1->isType()); + CPPUNIT_ASSERT(bgrid2.get() != nullptr); + CPPUNIT_ASSERT(bgrid2->isType()); + + const TreeType& btree1 = StaticPtrCast(bgrid1)->tree(); + CPPUNIT_ASSERT_EQUAL(Vec3s(10, 10, 10), btree1.getValue(Coord(10, 10, 10))); + const TreeType& btree2 = StaticPtrCast(bgrid2)->tree(); + CPPUNIT_ASSERT_EQUAL(Vec3s(10, 10, 10), btree2.getValue(Coord(10, 10, 10))); + } +} + + +void +TestFile::testWriteInstancedGrids() +{ + using namespace openvdb; + + // Register data types. + openvdb::initialize(); + + // Remove something.vdb2 when done. We must declare this here before the + // other grid smart_ptr's because we re-use them in the test several times. + // We will not be able to remove something.vdb2 on Windows if the pointers + // are still referencing data opened by the "file" variable. + const char* filename = "something.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + // Create grids. + Int32Tree::Ptr tree1(new Int32Tree(1)); + FloatTree::Ptr tree2(new FloatTree(2.0)); + GridBase::Ptr + grid1 = createGrid(tree1), + grid2 = createGrid(tree1), // instance of grid1 + grid3 = createGrid(tree2), + grid4 = createGrid(tree2); // instance of grid3 + grid1->setName("density"); + grid2->setName("density_copy"); + // Leave grid3 and grid4 unnamed. + + // Create transforms. + math::Transform::Ptr trans1 = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid1->setTransform(trans1); + grid2->setTransform(trans2); + grid3->setTransform(trans2); + grid4->setTransform(trans1); + + // Set some values. + tree1->setValue(Coord(0, 0, 0), 5); + tree1->setValue(Coord(100, 0, 0), 6); + tree2->setValue(Coord(0, 0, 0), 10); + tree2->setValue(Coord(0, 100, 0), 11); + + MetaMap::Ptr meta(new MetaMap); + meta->insertMeta("author", StringMetadata("Einstein")); + meta->insertMeta("year", Int32Metadata(2009)); + + GridPtrVecPtr grids(new GridPtrVec); + grids->push_back(grid1); + grids->push_back(grid2); + grids->push_back(grid3); + grids->push_back(grid4); + + // Write the grids to a file and then close the file. + { + io::File vdbFile(filename); + vdbFile.write(*grids, *meta); + } + meta.reset(); + + // Read the grids back in. + io::File file(filename); + file.open(); + grids = file.getGrids(); + meta = file.getMetadata(); + + // Verify the metadata. + CPPUNIT_ASSERT(meta.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(2, int(meta->metaCount())); + CPPUNIT_ASSERT_EQUAL(std::string("Einstein"), meta->metaValue("author")); + CPPUNIT_ASSERT_EQUAL(2009, meta->metaValue("year")); + + // Verify the grids. + CPPUNIT_ASSERT(grids.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(4, int(grids->size())); + + GridBase::Ptr grid = findGridByName(*grids, "density"); + CPPUNIT_ASSERT(grid.get() != nullptr); + Int32Tree::Ptr density = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(density.get() != nullptr); + + grid.reset(); + grid = findGridByName(*grids, "density_copy"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + // Verify that "density_copy" is an instance of (i.e., shares a tree with) "density". + CPPUNIT_ASSERT_EQUAL(density, gridPtrCast(grid)->treePtr()); + + grid.reset(); + grid = findGridByName(*grids, ""); + CPPUNIT_ASSERT(grid.get() != nullptr); + FloatTree::Ptr temperature = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != nullptr); + + grid.reset(); + for (GridPtrVec::reverse_iterator it = grids->rbegin(); !grid && it != grids->rend(); ++it) { + // Search for the second unnamed grid starting from the end of the list. + if ((*it)->getName() == "") grid = *it; + } + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + // Verify that the second unnamed grid is an instance of the first. + CPPUNIT_ASSERT_EQUAL(temperature, gridPtrCast(grid)->treePtr()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(5, density->getValue(Coord(0, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(6, density->getValue(Coord(100, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(10, temperature->getValue(Coord(0, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(11, temperature->getValue(Coord(0, 100, 0)), /*tolerance=*/0); + + // Reread with instancing disabled. + file.close(); + file.setInstancingEnabled(false); + file.open(); + grids = file.getGrids(); + CPPUNIT_ASSERT_EQUAL(4, int(grids->size())); + + grid = findGridByName(*grids, "density"); + CPPUNIT_ASSERT(grid.get() != nullptr); + density = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(density.get() != nullptr); + grid = findGridByName(*grids, "density_copy"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + // Verify that "density_copy" is *not* an instance of "density". + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr() != density); + + // Verify that the two unnamed grids are not instances of each other. + grid = findGridByName(*grids, ""); + CPPUNIT_ASSERT(grid.get() != nullptr); + temperature = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != nullptr); + grid.reset(); + for (GridPtrVec::reverse_iterator it = grids->rbegin(); !grid && it != grids->rend(); ++it) { + // Search for the second unnamed grid starting from the end of the list. + if ((*it)->getName() == "") grid = *it; + } + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr() != temperature); + + // Rewrite with instancing disabled, then reread with instancing enabled. + file.close(); + { + /// @todo (FX-7063) For now, write to a new file, then, when there's + /// no longer a need for delayed load from the old file, replace it + /// with the new file. + const char* tempFilename = "somethingelse.vdb"; + SharedPtr scopedTempFile(tempFilename, ::remove); + io::File vdbFile(tempFilename); + vdbFile.setInstancingEnabled(false); + vdbFile.write(*grids, *meta); + grids.reset(); + // Note: Windows requires that the destination not exist, before we can rename to it. + std::remove(filename); + std::rename(tempFilename, filename); + } + file.setInstancingEnabled(true); + file.open(); + grids = file.getGrids(); + CPPUNIT_ASSERT_EQUAL(4, int(grids->size())); + + // Verify that "density_copy" is not an instance of "density". + grid = findGridByName(*grids, "density"); + CPPUNIT_ASSERT(grid.get() != nullptr); + density = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(density.get() != nullptr); +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + CPPUNIT_ASSERT(density->unallocatedLeafCount() > 0); + CPPUNIT_ASSERT_EQUAL(density->leafCount(), density->unallocatedLeafCount()); +#endif + grid = findGridByName(*grids, "density_copy"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr() != density); + + // Verify that the two unnamed grids are not instances of each other. + grid = findGridByName(*grids, ""); + CPPUNIT_ASSERT(grid.get() != nullptr); + temperature = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != nullptr); + grid.reset(); + for (GridPtrVec::reverse_iterator it = grids->rbegin(); !grid && it != grids->rend(); ++it) { + // Search for the second unnamed grid starting from the end of the list. + if ((*it)->getName() == "") grid = *it; + } + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr() != temperature); +} + + +void +TestFile::testReadGridDescriptors() +{ + using namespace openvdb; + using namespace openvdb::io; + + using GridType = Int32Grid; + using TreeType = GridType::TreeType; + + File file("something.vdb2"); + + std::ostringstream ostr(std::ios_base::binary); + + // Create a grid with transform. + GridType::Ptr grid = createGrid(1); + TreeType& tree = grid->tree(); + tree.setValue(Coord(10, 1, 2), 10); + tree.setValue(Coord(0, 0, 0), 5); + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + + // Create another grid with transform. + GridType::Ptr grid2 = createGrid(2); + TreeType& tree2 = grid2->tree(); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(1000, 1000, 1000), 50); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.2); + grid2->setTransform(trans2); + + // Create the grid descriptor out of this grid. + GridDescriptor gd(Name("temperature"), grid->type()); + GridDescriptor gd2(Name("density"), grid2->type()); + + // Write out the number of grids. + int32_t gridCount = 2; + ostr.write(reinterpret_cast(&gridCount), sizeof(int32_t)); + // Write out the grids. + file.writeGrid(gd, grid, ostr, /*seekable=*/true); + file.writeGrid(gd2, grid2, ostr, /*seekable=*/true); + + // Register the grid and the transform and the blocks. + GridBase::clearRegistry(); + GridType::registerGrid(); + // register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Read in the grid descriptors. + File file2("something.vdb2"); + std::istringstream istr(ostr.str(), std::ios_base::binary); + io::setCurrentVersion(istr); + file2.readGridDescriptors(istr); + + // Compare with the initial grid descriptors. + File::NameMapCIter it = file2.findDescriptor("temperature"); + CPPUNIT_ASSERT(it != file2.gridDescriptors().end()); + GridDescriptor file2gd = it->second; + CPPUNIT_ASSERT_EQUAL(gd.gridName(), file2gd.gridName()); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), file2gd.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), file2gd.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), file2gd.getEndPos()); + + it = file2.findDescriptor("density"); + CPPUNIT_ASSERT(it != file2.gridDescriptors().end()); + file2gd = it->second; + CPPUNIT_ASSERT_EQUAL(gd2.gridName(), file2gd.gridName()); + CPPUNIT_ASSERT_EQUAL(gd2.getGridPos(), file2gd.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getBlockPos(), file2gd.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getEndPos(), file2gd.getEndPos()); + + // Clear registries. + GridBase::clearRegistry(); + math::MapRegistry::clear(); + + remove("something.vdb2"); +} + + +void +TestFile::testGridNaming() +{ + using namespace openvdb; + using namespace openvdb::io; + + using TreeType = Int32Tree; + + // Register data types. + openvdb::initialize(); + + logging::LevelScope suppressLogging{logging::Level::Fatal}; + + // Create several grids that share a single tree. + TreeType::Ptr tree(new TreeType(1)); + tree->setValue(Coord(10, 1, 2), 10); + tree->setValue(Coord(0, 0, 0), 5); + GridBase::Ptr + grid1 = openvdb::createGrid(tree), + grid2 = openvdb::createGrid(tree), + grid3 = openvdb::createGrid(tree); + + std::vector gridVec; + gridVec.push_back(grid1); + gridVec.push_back(grid2); + gridVec.push_back(grid3); + + // Give all grids the same name, but also some metadata to distinguish them. + for (int n = 0; n <= 2; ++n) { + gridVec[n]->setName("grid"); + gridVec[n]->insertMeta("index", Int32Metadata(n)); + } + + const char* filename = "testGridNaming.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + // Test first with grid instancing disabled, then with instancing enabled. + for (int instancing = 0; instancing <= 1; ++instancing) { + { + // Write the grids out to a file. + File file(filename); + file.setInstancingEnabled(instancing); + file.write(gridVec); + } + + // Open the file for reading. + File file(filename); + file.setInstancingEnabled(instancing); + file.open(); + + int n = 0; + for (File::NameIterator i = file.beginName(), e = file.endName(); i != e; ++i, ++n) { + CPPUNIT_ASSERT(file.hasGrid(i.gridName())); + } + // Verify that the file contains three grids. + CPPUNIT_ASSERT_EQUAL(3, n); + + // Read each grid. + for (n = -1; n <= 2; ++n) { + openvdb::Name name("grid"); + + // On the first iteration, read the grid named "grid", then read "grid[0]" + // (which is synonymous with "grid"), then "grid[1]", then "grid[2]". + if (n >= 0) { + name = GridDescriptor::nameAsString(GridDescriptor::addSuffix(name, n)); + } + + CPPUNIT_ASSERT(file.hasGrid(name)); + + // Read the current grid. + GridBase::ConstPtr grid = file.readGrid(name); + CPPUNIT_ASSERT(grid.get() != nullptr); + + // Verify that the grid is named "grid". + CPPUNIT_ASSERT_EQUAL(openvdb::Name("grid"), grid->getName()); + CPPUNIT_ASSERT_EQUAL((n < 0 ? 0 : n), grid->metaValue("index")); + } + + // Read all three grids at once. + GridPtrVecPtr allGrids = file.getGrids(); + CPPUNIT_ASSERT(allGrids.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(3, int(allGrids->size())); + + GridBase::ConstPtr firstGrid; + std::vector indices; + for (GridPtrVecCIter i = allGrids->begin(), e = allGrids->end(); i != e; ++i) { + GridBase::ConstPtr grid = *i; + CPPUNIT_ASSERT(grid.get() != nullptr); + + indices.push_back(grid->metaValue("index")); + + // If instancing is enabled, verify that all grids share the same tree. + if (instancing) { + if (!firstGrid) firstGrid = grid; + CPPUNIT_ASSERT_EQUAL(firstGrid->baseTreePtr(), grid->baseTreePtr()); + } + } + // Verify that three distinct grids were read, + // by examining their "index" metadata. + CPPUNIT_ASSERT_EQUAL(3, int(indices.size())); + std::sort(indices.begin(), indices.end()); + CPPUNIT_ASSERT_EQUAL(0, indices[0]); + CPPUNIT_ASSERT_EQUAL(1, indices[1]); + CPPUNIT_ASSERT_EQUAL(2, indices[2]); + } + + { + // Try writing and then reading a grid with a weird name + // that might conflict with the grid name indexing scheme. + const openvdb::Name weirdName("grid[4]"); + gridVec[0]->setName(weirdName); + { + File file(filename); + file.write(gridVec); + } + File file(filename); + file.open(); + + // Verify that the grid can be read and that its index is 0. + GridBase::ConstPtr grid = file.readGrid(weirdName); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(weirdName, grid->getName()); + CPPUNIT_ASSERT_EQUAL(0, grid->metaValue("index")); + + // Verify that the other grids can still be read successfully. + grid = file.readGrid("grid[0]"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(openvdb::Name("grid"), grid->getName()); + // Because there are now only two grids named "grid", the one with + // index 1 is now "grid[0]". + CPPUNIT_ASSERT_EQUAL(1, grid->metaValue("index")); + + grid = file.readGrid("grid[1]"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(openvdb::Name("grid"), grid->getName()); + // Because there are now only two grids named "grid", the one with + // index 2 is now "grid[1]". + CPPUNIT_ASSERT_EQUAL(2, grid->metaValue("index")); + + // Verify that there is no longer a third grid named "grid". + CPPUNIT_ASSERT_THROW(file.readGrid("grid[2]"), openvdb::KeyError); + } +} + + +void +TestFile::testEmptyFile() +{ + using namespace openvdb; + using namespace openvdb::io; + + const char* filename = "testEmptyFile.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + { + File file(filename); + file.write(GridPtrVec(), MetaMap()); + } + File file(filename); + file.open(); + + GridPtrVecPtr grids = file.getGrids(); + MetaMap::Ptr meta = file.getMetadata(); + + CPPUNIT_ASSERT(grids.get() != nullptr); + CPPUNIT_ASSERT(grids->empty()); + + CPPUNIT_ASSERT(meta.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(0, int(meta->metaCount())); +} + + +void +TestFile::testEmptyGridIO() +{ + using namespace openvdb; + using namespace openvdb::io; + + using GridType = Int32Grid; + + logging::LevelScope suppressLogging{logging::Level::Fatal}; + + const char* filename = "something.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + File file(filename); + + std::ostringstream ostr(std::ios_base::binary); + + // Create a grid with transform. + GridType::Ptr grid = createGrid(/*bg=*/1); + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + + // Create another grid with transform. + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.2); + GridType::Ptr grid2 = createGrid(/*bg=*/2); + grid2->setTransform(trans2); + + // Create the grid descriptor out of this grid. + GridDescriptor gd(Name("temperature"), grid->type()); + GridDescriptor gd2(Name("density"), grid2->type()); + + // Write out the number of grids. + int32_t gridCount = 2; + ostr.write(reinterpret_cast(&gridCount), sizeof(int32_t)); + // Write out the grids. + file.writeGrid(gd, grid, ostr, /*seekable=*/true); + file.writeGrid(gd2, grid2, ostr, /*seekable=*/true); + + // Ensure that the block offset and the end offsets are equivalent. + CPPUNIT_ASSERT_EQUAL(0, int(grid->baseTree().leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(grid2->baseTree().leafCount())); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), gd.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getEndPos(), gd2.getBlockPos()); + + // Register the grid and the transform and the blocks. + GridBase::clearRegistry(); + GridType::registerGrid(); + // register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Read in the grid descriptors. + File file2(filename); + std::istringstream istr(ostr.str(), std::ios_base::binary); + io::setCurrentVersion(istr); + file2.readGridDescriptors(istr); + + // Compare with the initial grid descriptors. + File::NameMapCIter it = file2.findDescriptor("temperature"); + CPPUNIT_ASSERT(it != file2.gridDescriptors().end()); + GridDescriptor file2gd = it->second; + file2gd.seekToGrid(istr); + GridBase::Ptr gd_grid = GridBase::createGrid(file2gd.gridType()); + Archive::readGridCompression(istr); + gd_grid->readMeta(istr); + gd_grid->readTransform(istr); + gd_grid->readTopology(istr); + CPPUNIT_ASSERT_EQUAL(gd.gridName(), file2gd.gridName()); + CPPUNIT_ASSERT(gd_grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(0, int(gd_grid->baseTree().leafCount())); + //CPPUNIT_ASSERT_EQUAL(8, int(gd_grid->baseTree().nonLeafCount())); + CPPUNIT_ASSERT_EQUAL(4, int(gd_grid->baseTree().treeDepth())); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), file2gd.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), file2gd.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), file2gd.getEndPos()); + + it = file2.findDescriptor("density"); + CPPUNIT_ASSERT(it != file2.gridDescriptors().end()); + file2gd = it->second; + file2gd.seekToGrid(istr); + gd_grid = GridBase::createGrid(file2gd.gridType()); + Archive::readGridCompression(istr); + gd_grid->readMeta(istr); + gd_grid->readTransform(istr); + gd_grid->readTopology(istr); + CPPUNIT_ASSERT_EQUAL(gd2.gridName(), file2gd.gridName()); + CPPUNIT_ASSERT(gd_grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(0, int(gd_grid->baseTree().leafCount())); + //CPPUNIT_ASSERT_EQUAL(8, int(gd_grid->nonLeafCount())); + CPPUNIT_ASSERT_EQUAL(4, int(gd_grid->baseTree().treeDepth())); + CPPUNIT_ASSERT_EQUAL(gd2.getGridPos(), file2gd.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getBlockPos(), file2gd.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd2.getEndPos(), file2gd.getEndPos()); + + // Clear registries. + GridBase::clearRegistry(); + math::MapRegistry::clear(); +} + + +void +TestFile::testOpen() +{ + using namespace openvdb; + + using FloatGrid = openvdb::FloatGrid; + using IntGrid = openvdb::Int32Grid; + using FloatTree = FloatGrid::TreeType; + using IntTree = Int32Grid::TreeType; + + // Create a VDB to write. + + // Create grids + IntGrid::Ptr grid = createGrid(/*bg=*/1); + IntTree& tree = grid->tree(); + grid->setName("density"); + + FloatGrid::Ptr grid2 = createGrid(/*bg=*/2.0); + FloatTree& tree2 = grid2->tree(); + grid2->setName("temperature"); + + // Create transforms + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + grid2->setTransform(trans2); + + // Set some values + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(100, 0, 0), 6); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(0, 100, 0), 11); + + MetaMap meta; + meta.insertMeta("author", StringMetadata("Einstein")); + meta.insertMeta("year", Int32Metadata(2009)); + + GridPtrVec grids; + grids.push_back(grid); + grids.push_back(grid2); + + CPPUNIT_ASSERT(findGridByName(grids, "density") == grid); + CPPUNIT_ASSERT(findGridByName(grids, "temperature") == grid2); + CPPUNIT_ASSERT(meta.metaValue("author") == "Einstein"); + CPPUNIT_ASSERT_EQUAL(2009, meta.metaValue("year")); + + // Register grid and transform. + GridBase::clearRegistry(); + IntGrid::registerGrid(); + FloatGrid::registerGrid(); + Metadata::clearRegistry(); + StringMetadata::registerType(); + Int32Metadata::registerType(); + // register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Write the vdb out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(grids, meta); + + // Now we can read in the file. + CPPUNIT_ASSERT(!vdbfile.open());//opening the same file + // Can't open same file multiple times without closing. + CPPUNIT_ASSERT_THROW(vdbfile.open(), openvdb::IoError); + vdbfile.close(); + CPPUNIT_ASSERT(!vdbfile.open());//opening the same file + + CPPUNIT_ASSERT(vdbfile.isOpen()); + + uint32_t version = OPENVDB_FILE_VERSION; + + CPPUNIT_ASSERT_EQUAL(version, vdbfile.fileVersion()); + CPPUNIT_ASSERT_EQUAL(version, io::getFormatVersion(vdbfile.inputStream())); + CPPUNIT_ASSERT_EQUAL(OPENVDB_LIBRARY_MAJOR_VERSION, vdbfile.libraryVersion().first); + CPPUNIT_ASSERT_EQUAL(OPENVDB_LIBRARY_MINOR_VERSION, vdbfile.libraryVersion().second); + CPPUNIT_ASSERT_EQUAL(OPENVDB_LIBRARY_MAJOR_VERSION, + io::getLibraryVersion(vdbfile.inputStream()).first); + CPPUNIT_ASSERT_EQUAL(OPENVDB_LIBRARY_MINOR_VERSION, + io::getLibraryVersion(vdbfile.inputStream()).second); + + // Ensure that we read in the vdb metadata. + CPPUNIT_ASSERT(vdbfile.getMetadata()); + CPPUNIT_ASSERT(vdbfile.getMetadata()->metaValue("author") == "Einstein"); + CPPUNIT_ASSERT_EQUAL(2009, vdbfile.getMetadata()->metaValue("year")); + + // Ensure we got the grid descriptors. + CPPUNIT_ASSERT_EQUAL(1, int(vdbfile.gridDescriptors().count("density"))); + CPPUNIT_ASSERT_EQUAL(1, int(vdbfile.gridDescriptors().count("temperature"))); + + io::File::NameMapCIter it = vdbfile.findDescriptor("density"); + CPPUNIT_ASSERT(it != vdbfile.gridDescriptors().end()); + io::GridDescriptor gd = it->second; + CPPUNIT_ASSERT_EQUAL(IntTree::treeType(), gd.gridType()); + + it = vdbfile.findDescriptor("temperature"); + CPPUNIT_ASSERT(it != vdbfile.gridDescriptors().end()); + gd = it->second; + CPPUNIT_ASSERT_EQUAL(FloatTree::treeType(), gd.gridType()); + + // Ensure we throw an error if there is no file. + io::File vdbfile2("somethingelses.vdb2"); + CPPUNIT_ASSERT_THROW(vdbfile2.open(), openvdb::IoError); + CPPUNIT_ASSERT_THROW(vdbfile2.inputStream(), openvdb::IoError); + + // Clear registries. + GridBase::clearRegistry(); + Metadata::clearRegistry(); + math::MapRegistry::clear(); + + // Test closing the file. + vdbfile.close(); + CPPUNIT_ASSERT(vdbfile.isOpen() == false); + CPPUNIT_ASSERT(vdbfile.fileMetadata().get() == nullptr); + CPPUNIT_ASSERT_EQUAL(0, int(vdbfile.gridDescriptors().size())); + CPPUNIT_ASSERT_THROW(vdbfile.inputStream(), openvdb::IoError); + + remove("something.vdb2"); +} + + +void +TestFile::testNonVdbOpen() +{ + std::ofstream file("dummy.vdb2", std::ios_base::binary); + + int64_t something = 1; + file.write(reinterpret_cast(&something), sizeof(int64_t)); + + file.close(); + + openvdb::io::File vdbfile("dummy.vdb2"); + CPPUNIT_ASSERT_THROW(vdbfile.open(), openvdb::IoError); + CPPUNIT_ASSERT_THROW(vdbfile.inputStream(), openvdb::IoError); + + remove("dummy.vdb2"); +} + + +void +TestFile::testGetMetadata() +{ + using namespace openvdb; + + GridPtrVec grids; + MetaMap meta; + + meta.insertMeta("author", StringMetadata("Einstein")); + meta.insertMeta("year", Int32Metadata(2009)); + + // Adjust registry before writing. + Metadata::clearRegistry(); + StringMetadata::registerType(); + Int32Metadata::registerType(); + + // Write the vdb out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(grids, meta); + + // Check if reading without opening the file + CPPUNIT_ASSERT_THROW(vdbfile.getMetadata(), openvdb::IoError); + + vdbfile.open(); + + MetaMap::Ptr meta2 = vdbfile.getMetadata(); + + CPPUNIT_ASSERT_EQUAL(2, int(meta2->metaCount())); + + CPPUNIT_ASSERT(meta2->metaValue("author") == "Einstein"); + CPPUNIT_ASSERT_EQUAL(2009, meta2->metaValue("year")); + + // Clear registry. + Metadata::clearRegistry(); + + remove("something.vdb2"); +} + + +void +TestFile::testReadAll() +{ + using namespace openvdb; + + using FloatGrid = openvdb::FloatGrid; + using IntGrid = openvdb::Int32Grid; + using FloatTree = FloatGrid::TreeType; + using IntTree = Int32Grid::TreeType; + + // Create a vdb to write. + + // Create grids + IntGrid::Ptr grid1 = createGrid(/*bg=*/1); + IntTree& tree = grid1->tree(); + grid1->setName("density"); + + FloatGrid::Ptr grid2 = createGrid(/*bg=*/2.0); + FloatTree& tree2 = grid2->tree(); + grid2->setName("temperature"); + + // Create transforms + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid1->setTransform(trans); + grid2->setTransform(trans2); + + // Set some values + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(100, 0, 0), 6); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(0, 100, 0), 11); + + MetaMap meta; + meta.insertMeta("author", StringMetadata("Einstein")); + meta.insertMeta("year", Int32Metadata(2009)); + + GridPtrVec grids; + grids.push_back(grid1); + grids.push_back(grid2); + + // Register grid and transform. + openvdb::initialize(); + + // Write the vdb out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(grids, meta); + + io::File vdbfile2("something.vdb2"); + CPPUNIT_ASSERT_THROW(vdbfile2.getGrids(), openvdb::IoError); + + vdbfile2.open(); + CPPUNIT_ASSERT(vdbfile2.isOpen()); + + GridPtrVecPtr grids2 = vdbfile2.getGrids(); + MetaMap::Ptr meta2 = vdbfile2.getMetadata(); + + // Ensure we have the metadata. + CPPUNIT_ASSERT_EQUAL(2, int(meta2->metaCount())); + CPPUNIT_ASSERT(meta2->metaValue("author") == "Einstein"); + CPPUNIT_ASSERT_EQUAL(2009, meta2->metaValue("year")); + + // Ensure we got the grids. + CPPUNIT_ASSERT_EQUAL(2, int(grids2->size())); + + GridBase::Ptr grid; + grid.reset(); + grid = findGridByName(*grids2, "density"); + CPPUNIT_ASSERT(grid.get() != nullptr); + IntTree::Ptr density = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(density.get() != nullptr); + + grid.reset(); + grid = findGridByName(*grids2, "temperature"); + CPPUNIT_ASSERT(grid.get() != nullptr); + FloatTree::Ptr temperature = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != nullptr); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(5, density->getValue(Coord(0, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(6, density->getValue(Coord(100, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(10, temperature->getValue(Coord(0, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(11, temperature->getValue(Coord(0, 100, 0)), /*tolerance=*/0); + + // Clear registries. + GridBase::clearRegistry(); + Metadata::clearRegistry(); + math::MapRegistry::clear(); + + vdbfile2.close(); + + remove("something.vdb2"); +} + + +void +TestFile::testWriteOpenFile() +{ + using namespace openvdb; + + MetaMap::Ptr meta(new MetaMap); + meta->insertMeta("author", StringMetadata("Einstein")); + meta->insertMeta("year", Int32Metadata(2009)); + + // Register metadata + Metadata::clearRegistry(); + StringMetadata::registerType(); + Int32Metadata::registerType(); + + // Write the metadata out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(GridPtrVec(), *meta); + + io::File vdbfile2("something.vdb2"); + CPPUNIT_ASSERT_THROW(vdbfile2.getGrids(), openvdb::IoError); + + vdbfile2.open(); + CPPUNIT_ASSERT(vdbfile2.isOpen()); + + GridPtrVecPtr grids = vdbfile2.getGrids(); + meta = vdbfile2.getMetadata(); + + // Ensure we have the metadata. + CPPUNIT_ASSERT(meta.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(2, int(meta->metaCount())); + CPPUNIT_ASSERT(meta->metaValue("author") == "Einstein"); + CPPUNIT_ASSERT_EQUAL(2009, meta->metaValue("year")); + + // Ensure we got the grids. + CPPUNIT_ASSERT(grids.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(0, int(grids->size())); + + // Cannot write an open file. + CPPUNIT_ASSERT_THROW(vdbfile2.write(*grids), openvdb::IoError); + + vdbfile2.close(); + + CPPUNIT_ASSERT_NO_THROW(vdbfile2.write(*grids)); + + // Clear registries. + Metadata::clearRegistry(); + + remove("something.vdb2"); +} + + +void +TestFile::testReadGridMetadata() +{ + using namespace openvdb; + + openvdb::initialize(); + + const char* filename = "testReadGridMetadata.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + // Create grids + Int32Grid::Ptr igrid = createGrid(/*bg=*/1); + FloatGrid::Ptr fgrid = createGrid(/*bg=*/2.0); + + // Add metadata. + igrid->setName("igrid"); + igrid->insertMeta("author", StringMetadata("Einstein")); + igrid->insertMeta("year", Int32Metadata(2012)); + + fgrid->setName("fgrid"); + fgrid->insertMeta("author", StringMetadata("Einstein")); + fgrid->insertMeta("year", Int32Metadata(2012)); + + // Add transforms. + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + igrid->setTransform(trans); + fgrid->setTransform(trans); + + // Set some values. + igrid->tree().setValue(Coord(0, 0, 0), 5); + igrid->tree().setValue(Coord(100, 0, 0), 6); + fgrid->tree().setValue(Coord(0, 0, 0), 10); + fgrid->tree().setValue(Coord(0, 100, 0), 11); + + GridPtrVec srcGrids; + srcGrids.push_back(igrid); + srcGrids.push_back(fgrid); + std::map srcGridMap; + srcGridMap[igrid->getName()] = igrid; + srcGridMap[fgrid->getName()] = fgrid; + + enum { OUTPUT_TO_FILE = 0, OUTPUT_TO_STREAM = 1 }; + for (int outputMethod = OUTPUT_TO_FILE; outputMethod <= OUTPUT_TO_STREAM; ++outputMethod) + { + if (outputMethod == OUTPUT_TO_FILE) { + // Write the grids to a file. + io::File vdbfile(filename); + vdbfile.write(srcGrids); + } else { + // Stream the grids to a file (i.e., without file offsets). + std::ofstream ostrm(filename, std::ios_base::binary); + io::Stream(ostrm).write(srcGrids); + } + + // Read just the grid-level metadata from the file. + io::File vdbfile(filename); + + // Verify that reading from an unopened file generates an exception. + CPPUNIT_ASSERT_THROW(vdbfile.readGridMetadata("igrid"), openvdb::IoError); + CPPUNIT_ASSERT_THROW(vdbfile.readGridMetadata("noname"), openvdb::IoError); + CPPUNIT_ASSERT_THROW(vdbfile.readAllGridMetadata(), openvdb::IoError); + + vdbfile.open(); + + CPPUNIT_ASSERT(vdbfile.isOpen()); + + // Verify that reading a nonexistent grid generates an exception. + CPPUNIT_ASSERT_THROW(vdbfile.readGridMetadata("noname"), openvdb::KeyError); + + // Read all grids and store them in a list. + GridPtrVecPtr gridMetadata = vdbfile.readAllGridMetadata(); + CPPUNIT_ASSERT(gridMetadata.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(2, int(gridMetadata->size())); + + // Read individual grids and append them to the list. + GridBase::Ptr grid = vdbfile.readGridMetadata("igrid"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(std::string("igrid"), grid->getName()); + gridMetadata->push_back(grid); + + grid = vdbfile.readGridMetadata("fgrid"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(std::string("fgrid"), grid->getName()); + gridMetadata->push_back(grid); + + // Verify that the grids' metadata and transforms match the original grids'. + for (size_t i = 0, N = gridMetadata->size(); i < N; ++i) { + grid = (*gridMetadata)[i]; + + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(grid->getName() == "igrid" || grid->getName() == "fgrid"); + CPPUNIT_ASSERT(grid->baseTreePtr().get() != nullptr); + + // Since we didn't read the grid's topology, the tree should be empty. + CPPUNIT_ASSERT_EQUAL(0, int(grid->constBaseTreePtr()->leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(grid->constBaseTreePtr()->activeVoxelCount())); + + // Retrieve the source grid of the same name. + GridBase::ConstPtr srcGrid = srcGridMap[grid->getName()]; + + // Compare grid types and transforms. + CPPUNIT_ASSERT_EQUAL(srcGrid->type(), grid->type()); + CPPUNIT_ASSERT_EQUAL(srcGrid->transform(), grid->transform()); + + // Compare metadata, ignoring fields that were added when the file was written. + MetaMap::Ptr + statsMetadata = grid->getStatsMetadata(), + otherMetadata = grid->copyMeta(); // shallow copy + CPPUNIT_ASSERT(statsMetadata->metaCount() != 0); + statsMetadata->insertMeta(GridBase::META_FILE_COMPRESSION, StringMetadata("")); + for (MetaMap::ConstMetaIterator it = grid->beginMeta(), end = grid->endMeta(); + it != end; ++it) + { + // Keep all fields that exist in the source grid. + if ((*srcGrid)[it->first]) continue; + // Remove any remaining grid statistics fields. + if ((*statsMetadata)[it->first]) { + otherMetadata->removeMeta(it->first); + } + // Remove delay load metadata if it exists. + if ((*otherMetadata)["file_delayed_load"]) { + otherMetadata->removeMeta("file_delayed_load"); + } + } + CPPUNIT_ASSERT_EQUAL(srcGrid->str(), otherMetadata->str()); + + const CoordBBox srcBBox = srcGrid->evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT_EQUAL(srcBBox.min().asVec3i(), grid->metaValue("file_bbox_min")); + CPPUNIT_ASSERT_EQUAL(srcBBox.max().asVec3i(), grid->metaValue("file_bbox_max")); + CPPUNIT_ASSERT_EQUAL(srcGrid->activeVoxelCount(), + Index64(grid->metaValue("file_voxel_count"))); + CPPUNIT_ASSERT_EQUAL(srcGrid->memUsage(), + Index64(grid->metaValue("file_mem_bytes"))); + } + } +} + + +void +TestFile::testReadGrid() +{ + using namespace openvdb; + + using FloatGrid = openvdb::FloatGrid; + using IntGrid = openvdb::Int32Grid; + using FloatTree = FloatGrid::TreeType; + using IntTree = Int32Grid::TreeType; + + // Create a vdb to write. + + // Create grids + IntGrid::Ptr grid = createGrid(/*bg=*/1); + IntTree& tree = grid->tree(); + grid->setName("density"); + + FloatGrid::Ptr grid2 = createGrid(/*bg=*/2.0); + FloatTree& tree2 = grid2->tree(); + grid2->setName("temperature"); + + // Create transforms + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + grid2->setTransform(trans2); + + // Set some values + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(100, 0, 0), 6); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(0, 100, 0), 11); + + MetaMap meta; + meta.insertMeta("author", StringMetadata("Einstein")); + meta.insertMeta("year", Int32Metadata(2009)); + + GridPtrVec grids; + grids.push_back(grid); + grids.push_back(grid2); + + // Register grid and transform. + openvdb::initialize(); + + // Write the vdb out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(grids, meta); + + io::File vdbfile2("something.vdb2"); + + vdbfile2.open(); + + CPPUNIT_ASSERT(vdbfile2.isOpen()); + + // Get Temperature + GridBase::Ptr temperature = vdbfile2.readGrid("temperature"); + + CPPUNIT_ASSERT(temperature.get() != nullptr); + + FloatTree::Ptr typedTemperature = gridPtrCast(temperature)->treePtr(); + + CPPUNIT_ASSERT(typedTemperature.get() != nullptr); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(10, typedTemperature->getValue(Coord(0, 0, 0)), 0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(11, typedTemperature->getValue(Coord(0, 100, 0)), 0); + + // Get Density + GridBase::Ptr density = vdbfile2.readGrid("density"); + + CPPUNIT_ASSERT(density.get() != nullptr); + + IntTree::Ptr typedDensity = gridPtrCast(density)->treePtr(); + + CPPUNIT_ASSERT(typedDensity.get() != nullptr); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(5,typedDensity->getValue(Coord(0, 0, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(6,typedDensity->getValue(Coord(100, 0, 0)), /*tolerance=*/0); + + // Clear registries. + GridBase::clearRegistry(); + Metadata::clearRegistry(); + math::MapRegistry::clear(); + + vdbfile2.close(); + + remove("something.vdb2"); +} + + +//////////////////////////////////////// + + +template +void +validateClippedGrid(const GridT& clipped, const typename GridT::ValueType& fg) +{ + using namespace openvdb; + + using ValueT = typename GridT::ValueType; + + const CoordBBox bbox = clipped.evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT_EQUAL(4, bbox.min().x()); + CPPUNIT_ASSERT_EQUAL(4, bbox.min().y()); + CPPUNIT_ASSERT_EQUAL(-6, bbox.min().z()); + CPPUNIT_ASSERT_EQUAL(4, bbox.max().x()); + CPPUNIT_ASSERT_EQUAL(4, bbox.max().y()); + CPPUNIT_ASSERT_EQUAL(6, bbox.max().z()); + CPPUNIT_ASSERT_EQUAL(6 + 6 + 1, int(clipped.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(2, int(clipped.constTree().leafCount())); + + typename GridT::ConstAccessor acc = clipped.getConstAccessor(); + const ValueT bg = clipped.background(); + Coord xyz; + int &x = xyz[0], &y = xyz[1], &z = xyz[2]; + for (x = -10; x <= 10; ++x) { + for (y = -10; y <= 10; ++y) { + for (z = -10; z <= 10; ++z) { + if (x == 4 && y == 4 && z >= -6 && z <= 6) { + CPPUNIT_ASSERT_EQUAL(fg, acc.getValue(Coord(4, 4, z))); + } else { + CPPUNIT_ASSERT_EQUAL(bg, acc.getValue(Coord(x, y, z))); + } + } + } + } +} + + +// See also TestGrid::testClipping() +void +TestFile::testReadClippedGrid() +{ + using namespace openvdb; + + // Register types. + openvdb::initialize(); + + // World-space clipping region + const BBoxd clipBox(Vec3d(4.0, 4.0, -6.0), Vec3d(4.9, 4.9, 6.0)); + + // Create grids of several types and fill a cubic region of each with a foreground value. + + const bool bfg = true; + BoolGrid::Ptr bgrid = BoolGrid::create(/*bg=*/zeroVal()); + bgrid->setName("bgrid"); + bgrid->fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/bfg, /*active=*/true); + + const float ffg = 5.f; + FloatGrid::Ptr fgrid = FloatGrid::create(/*bg=*/zeroVal()); + fgrid->setName("fgrid"); + fgrid->fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/ffg, /*active=*/true); + + const Vec3s vfg(1.f, -2.f, 3.f); + Vec3SGrid::Ptr vgrid = Vec3SGrid::create(/*bg=*/zeroVal()); + vgrid->setName("vgrid"); + vgrid->fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/vfg, /*active=*/true); + + GridPtrVec srcGrids; + srcGrids.push_back(bgrid); + srcGrids.push_back(fgrid); + srcGrids.push_back(vgrid); + + const char* filename = "testReadClippedGrid.vdb"; + SharedPtr scopedFile(filename, ::remove); + + enum { OUTPUT_TO_FILE = 0, OUTPUT_TO_STREAM = 1 }; + for (int outputMethod = OUTPUT_TO_FILE; outputMethod <= OUTPUT_TO_STREAM; ++outputMethod) + { + if (outputMethod == OUTPUT_TO_FILE) { + // Write the grids to a file. + io::File vdbfile(filename); + vdbfile.write(srcGrids); + } else { + // Stream the grids to a file (i.e., without file offsets). + std::ofstream ostrm(filename, std::ios_base::binary); + io::Stream(ostrm).write(srcGrids); + } + + // Open the file for reading. + io::File vdbfile(filename); + vdbfile.open(); + + GridBase::Ptr grid; + + // Read and clip each grid. + + CPPUNIT_ASSERT_NO_THROW(grid = vdbfile.readGrid("bgrid", clipBox)); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_NO_THROW(bgrid = gridPtrCast(grid)); + validateClippedGrid(*bgrid, bfg); + + CPPUNIT_ASSERT_NO_THROW(grid = vdbfile.readGrid("fgrid", clipBox)); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_NO_THROW(fgrid = gridPtrCast(grid)); + validateClippedGrid(*fgrid, ffg); + + CPPUNIT_ASSERT_NO_THROW(grid = vdbfile.readGrid("vgrid", clipBox)); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_NO_THROW(vgrid = gridPtrCast(grid)); + validateClippedGrid(*vgrid, vfg); + } +} + + +//////////////////////////////////////// + + +namespace { + +template struct MultiPassLeafNode; // forward declaration + +// Dummy value type +using MultiPassValue = openvdb::PointIndex; + +// Tree configured to match the default OpenVDB configuration +using MultiPassTree = openvdb::tree::Tree< + openvdb::tree::RootNode< + openvdb::tree::InternalNode< + openvdb::tree::InternalNode< + MultiPassLeafNode, 4>, 5>>>; + +using MultiPassGrid = openvdb::Grid; + + +template +struct MultiPassLeafNode: public openvdb::tree::LeafNode, openvdb::io::MultiPass +{ + // The following had to be copied from the LeafNode class + // to make the derived class compatible with the tree structure. + + using LeafNodeType = MultiPassLeafNode; + using Ptr = openvdb::SharedPtr; + using BaseLeaf = openvdb::tree::LeafNode; + using NodeMaskType = openvdb::util::NodeMask; + using ValueType = T; + using ValueOnCIter = typename BaseLeaf::template ValueIter; + using ChildOnIter = typename BaseLeaf::template ChildIter; + using ChildOnCIter = typename BaseLeaf::template ChildIter< + typename NodeMaskType::OnIterator, const MultiPassLeafNode, typename BaseLeaf::ChildOn>; + + MultiPassLeafNode(const openvdb::Coord& coords, const T& value, bool active = false) + : BaseLeaf(coords, value, active) {} + MultiPassLeafNode(openvdb::PartialCreate, const openvdb::Coord& coords, const T& value, + bool active = false): BaseLeaf(openvdb::PartialCreate(), coords, value, active) {} + MultiPassLeafNode(const MultiPassLeafNode& rhs): BaseLeaf(rhs) {} + + ValueOnCIter cbeginValueOn() const { return ValueOnCIter(this->getValueMask().beginOn(),this); } + ChildOnCIter cbeginChildOn() const { return ChildOnCIter(this->getValueMask().endOn(), this); } + ChildOnIter beginChildOn() { return ChildOnIter(this->getValueMask().endOn(), this); } + + // Methods in use for reading and writing multiple buffers + + void readBuffers(std::istream& is, const openvdb::CoordBBox&, bool fromHalf = false) + { + this->readBuffers(is, fromHalf); + } + + void readBuffers(std::istream& is, bool /*fromHalf*/ = false) + { + const openvdb::io::StreamMetadata::Ptr meta = openvdb::io::getStreamMetadataPtr(is); + if (!meta) { + OPENVDB_THROW(openvdb::IoError, + "Cannot write out a MultiBufferLeaf without StreamMetadata."); + } + + // clamp pass to 16-bit integer + const uint32_t pass(static_cast(meta->pass())); + + // Read in the stored pass number. + uint32_t readPass; + is.read(reinterpret_cast(&readPass), sizeof(uint32_t)); + CPPUNIT_ASSERT_EQUAL(pass, readPass); + // Record the pass number. + mReadPasses.push_back(readPass); + + if (pass == 0) { + // Read in the node's origin. + openvdb::Coord origin; + is.read(reinterpret_cast(&origin), sizeof(openvdb::Coord)); + CPPUNIT_ASSERT_EQUAL(origin, this->origin()); + } + } + + void writeBuffers(std::ostream& os, bool /*toHalf*/ = false) const + { + const openvdb::io::StreamMetadata::Ptr meta = openvdb::io::getStreamMetadataPtr(os); + if (!meta) { + OPENVDB_THROW(openvdb::IoError, + "Cannot read in a MultiBufferLeaf without StreamMetadata."); + } + + // clamp pass to 16-bit integer + const uint32_t pass(static_cast(meta->pass())); + + // Leaf traversal analysis deduces the number of passes to perform for this leaf + // then updates the leaf traversal value to ensure all passes will be written. + if (meta->countingPasses()) { + if (mNumPasses > pass) meta->setPass(mNumPasses); + return; + } + + // Record the pass number. + CPPUNIT_ASSERT(mWritePassesPtr); + const_cast&>(*mWritePassesPtr).push_back(pass); + + // Write out the pass number. + os.write(reinterpret_cast(&pass), sizeof(uint32_t)); + if (pass == 0) { + // Write out the node's origin and the pass number. + const auto origin = this->origin(); + os.write(reinterpret_cast(&origin), sizeof(openvdb::Coord)); + } + } + + + uint32_t mNumPasses = 0; + // Pointer to external vector in which to record passes as they are written + std::vector* mWritePassesPtr = nullptr; + // Vector in which to record passes as they are read + // (this needs to be internal, because leaf nodes are constructed as a grid is read) + std::vector mReadPasses; +}; // struct MultiPassLeafNode + +} // anonymous namespace + + +void +TestFile::testMultiPassIO() +{ + using namespace openvdb; + + openvdb::initialize(); + MultiPassGrid::registerGrid(); + + // Create a multi-buffer grid. + const MultiPassGrid::Ptr grid = openvdb::createGrid(); + grid->setName("test"); + grid->setTransform(math::Transform::createLinearTransform(1.0)); + MultiPassGrid::TreeType& tree = grid->tree(); + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(0, 10, 0), 5); + CPPUNIT_ASSERT_EQUAL(2, int(tree.leafCount())); + + const GridPtrVec grids{grid}; + + // Vector in which to record pass numbers (to ensure blocked ordering) + std::vector writePasses; + { + // Specify the required number of I/O passes for each leaf node. + MultiPassGrid::TreeType::LeafIter leafIter = tree.beginLeaf(); + leafIter->mNumPasses = 3; + leafIter->mWritePassesPtr = &writePasses; + ++leafIter; + leafIter->mNumPasses = 2; + leafIter->mWritePassesPtr = &writePasses; + } + + const char* filename = "testMultiPassIO.vdb"; + SharedPtr scopedFile(filename, ::remove); + { + // Verify that passes are written to a file in the correct order. + io::File(filename).write(grids); + CPPUNIT_ASSERT_EQUAL(6, int(writePasses.size())); + CPPUNIT_ASSERT_EQUAL(0, writePasses[0]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(0, writePasses[1]); // leaf 1 + CPPUNIT_ASSERT_EQUAL(1, writePasses[2]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(1, writePasses[3]); // leaf 1 + CPPUNIT_ASSERT_EQUAL(2, writePasses[4]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(2, writePasses[5]); // leaf 1 + } + { + // Verify that passes are read in the correct order. + io::File file(filename); + file.open(); + const auto newGrid = GridBase::grid(file.readGrid("test")); + + auto leafIter = newGrid->tree().beginLeaf(); + CPPUNIT_ASSERT_EQUAL(3, int(leafIter->mReadPasses.size())); + CPPUNIT_ASSERT_EQUAL(0, leafIter->mReadPasses[0]); + CPPUNIT_ASSERT_EQUAL(1, leafIter->mReadPasses[1]); + CPPUNIT_ASSERT_EQUAL(2, leafIter->mReadPasses[2]); + ++leafIter; + CPPUNIT_ASSERT_EQUAL(3, int(leafIter->mReadPasses.size())); + CPPUNIT_ASSERT_EQUAL(0, leafIter->mReadPasses[0]); + CPPUNIT_ASSERT_EQUAL(1, leafIter->mReadPasses[1]); + CPPUNIT_ASSERT_EQUAL(2, leafIter->mReadPasses[2]); + } +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + { + // Verify that when using multi-pass and bbox clipping that each leaf node + // is still being read before being clipped + io::File file(filename); + file.open(); + const auto newGrid = GridBase::grid( + file.readGrid("test", BBoxd(Vec3d(0), Vec3d(1)))); + CPPUNIT_ASSERT_EQUAL(Index32(1), newGrid->tree().leafCount()); + + auto leafIter = newGrid->tree().beginLeaf(); + CPPUNIT_ASSERT_EQUAL(3, int(leafIter->mReadPasses.size())); + CPPUNIT_ASSERT_EQUAL(0, leafIter->mReadPasses[0]); + CPPUNIT_ASSERT_EQUAL(1, leafIter->mReadPasses[1]); + CPPUNIT_ASSERT_EQUAL(2, leafIter->mReadPasses[2]); + ++leafIter; + CPPUNIT_ASSERT(!leafIter); // second leaf node has now been clipped + } +#endif + + // Clear the pass data. + writePasses.clear(); + + { + // Verify that passes are written to and read from a non-seekable stream + // in the correct order. + std::ostringstream ostr(std::ios_base::binary); + io::Stream(ostr).write(grids); + + CPPUNIT_ASSERT_EQUAL(6, int(writePasses.size())); + CPPUNIT_ASSERT_EQUAL(0, writePasses[0]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(0, writePasses[1]); // leaf 1 + CPPUNIT_ASSERT_EQUAL(1, writePasses[2]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(1, writePasses[3]); // leaf 1 + CPPUNIT_ASSERT_EQUAL(2, writePasses[4]); // leaf 0 + CPPUNIT_ASSERT_EQUAL(2, writePasses[5]); // leaf 1 + + std::istringstream is(ostr.str(), std::ios_base::binary); + io::Stream strm(is); + const auto streamedGrids = strm.getGrids(); + CPPUNIT_ASSERT_EQUAL(1, int(streamedGrids->size())); + + const auto newGrid = gridPtrCast(*streamedGrids->begin()); + CPPUNIT_ASSERT(bool(newGrid)); + auto leafIter = newGrid->tree().beginLeaf(); + CPPUNIT_ASSERT_EQUAL(3, int(leafIter->mReadPasses.size())); + CPPUNIT_ASSERT_EQUAL(0, leafIter->mReadPasses[0]); + CPPUNIT_ASSERT_EQUAL(1, leafIter->mReadPasses[1]); + CPPUNIT_ASSERT_EQUAL(2, leafIter->mReadPasses[2]); + ++leafIter; + CPPUNIT_ASSERT_EQUAL(3, int(leafIter->mReadPasses.size())); + CPPUNIT_ASSERT_EQUAL(0, leafIter->mReadPasses[0]); + CPPUNIT_ASSERT_EQUAL(1, leafIter->mReadPasses[1]); + CPPUNIT_ASSERT_EQUAL(2, leafIter->mReadPasses[2]); + } +} + + +//////////////////////////////////////// + + +void +TestFile::testHasGrid() +{ + using namespace openvdb; + using namespace openvdb::io; + + using FloatGrid = openvdb::FloatGrid; + using IntGrid = openvdb::Int32Grid; + using FloatTree = FloatGrid::TreeType; + using IntTree = Int32Grid::TreeType; + + // Create a vdb to write. + + // Create grids + IntGrid::Ptr grid = createGrid(/*bg=*/1); + IntTree& tree = grid->tree(); + grid->setName("density"); + + FloatGrid::Ptr grid2 = createGrid(/*bg=*/2.0); + FloatTree& tree2 = grid2->tree(); + grid2->setName("temperature"); + + // Create transforms + math::Transform::Ptr trans = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid->setTransform(trans); + grid2->setTransform(trans2); + + // Set some values + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(100, 0, 0), 6); + tree2.setValue(Coord(0, 0, 0), 10); + tree2.setValue(Coord(0, 100, 0), 11); + + MetaMap meta; + meta.insertMeta("author", StringMetadata("Einstein")); + meta.insertMeta("year", Int32Metadata(2009)); + + GridPtrVec grids; + grids.push_back(grid); + grids.push_back(grid2); + + // Register grid and transform. + GridBase::clearRegistry(); + IntGrid::registerGrid(); + FloatGrid::registerGrid(); + Metadata::clearRegistry(); + StringMetadata::registerType(); + Int32Metadata::registerType(); + // register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::UniformScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + math::UniformScaleTranslateMap::registerMap(); + math::NonlinearFrustumMap::registerMap(); + + // Write the vdb out to a file. + io::File vdbfile("something.vdb2"); + vdbfile.write(grids, meta); + + io::File vdbfile2("something.vdb2"); + + CPPUNIT_ASSERT_THROW(vdbfile2.hasGrid("density"), openvdb::IoError); + + vdbfile2.open(); + + CPPUNIT_ASSERT(vdbfile2.hasGrid("density")); + CPPUNIT_ASSERT(vdbfile2.hasGrid("temperature")); + CPPUNIT_ASSERT(!vdbfile2.hasGrid("Temperature")); + CPPUNIT_ASSERT(!vdbfile2.hasGrid("densitY")); + + // Clear registries. + GridBase::clearRegistry(); + Metadata::clearRegistry(); + math::MapRegistry::clear(); + + vdbfile2.close(); + + remove("something.vdb2"); +} + + +void +TestFile::testNameIterator() +{ + using namespace openvdb; + using namespace openvdb::io; + + using FloatGrid = openvdb::FloatGrid; + using FloatTree = FloatGrid::TreeType; + using IntTree = Int32Grid::TreeType; + + // Create trees. + IntTree::Ptr itree(new IntTree(1)); + itree->setValue(Coord(0, 0, 0), 5); + itree->setValue(Coord(100, 0, 0), 6); + FloatTree::Ptr ftree(new FloatTree(2.0)); + ftree->setValue(Coord(0, 0, 0), 10.0); + ftree->setValue(Coord(0, 100, 0), 11.0); + + // Create grids. + GridPtrVec grids; + GridBase::Ptr grid = createGrid(itree); + grid->setName("density"); + grids.push_back(grid); + + grid = createGrid(ftree); + grid->setName("temperature"); + grids.push_back(grid); + + // Create two unnamed grids. + grids.push_back(createGrid(ftree)); + grids.push_back(createGrid(ftree)); + + // Create two grids with the same name. + grid = createGrid(ftree); + grid->setName("level_set"); + grids.push_back(grid); + grid = createGrid(ftree); + grid->setName("level_set"); + grids.push_back(grid); + + // Register types. + openvdb::initialize(); + + const char* filename = "testNameIterator.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + // Write the grids out to a file. + { + io::File vdbfile(filename); + vdbfile.write(grids); + } + + io::File vdbfile(filename); + + // Verify that name iteration fails if the file is not open. + CPPUNIT_ASSERT_THROW(vdbfile.beginName(), openvdb::IoError); + + vdbfile.open(); + + // Names should appear in lexicographic order. + Name names[6] = { "[0]", "[1]", "density", "level_set[0]", "level_set[1]", "temperature" }; + int count = 0; + for (io::File::NameIterator iter = vdbfile.beginName(); iter != vdbfile.endName(); ++iter) { + CPPUNIT_ASSERT_EQUAL(names[count], *iter); + CPPUNIT_ASSERT_EQUAL(names[count], iter.gridName()); + ++count; + grid = vdbfile.readGrid(*iter); + CPPUNIT_ASSERT(grid); + } + CPPUNIT_ASSERT_EQUAL(6, count); + + vdbfile.close(); +} + + +void +TestFile::testReadOldFileFormat() +{ + /// @todo Save some old-format (prior to OPENVDB_FILE_VERSION) .vdb2 files + /// to /work/rd/fx_tools/vdb_unittest/TestFile::testReadOldFileFormat/ + /// Verify that the files can still be read correctly. +} + + +void +TestFile::testCompression() +{ + using namespace openvdb; + using namespace openvdb::io; + + using IntGrid = openvdb::Int32Grid; + + // Register types. + openvdb::initialize(); + + // Create reference grids. + IntGrid::Ptr intGrid = IntGrid::create(/*background=*/0); + intGrid->fill(CoordBBox(Coord(0), Coord(49)), /*value=*/999, /*active=*/true); + intGrid->fill(CoordBBox(Coord(6), Coord(43)), /*value=*/0, /*active=*/false); + intGrid->fill(CoordBBox(Coord(21), Coord(22)), /*value=*/1, /*active=*/false); + intGrid->fill(CoordBBox(Coord(23), Coord(24)), /*value=*/2, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(8, int(IntGrid::TreeType::LeafNodeType::DIM)); + + FloatGrid::Ptr lsGrid = createLevelSet(); + unittest_util::makeSphere(/*dim=*/Coord(100), /*ctr=*/Vec3f(50, 50, 50), /*r=*/20.0, + *lsGrid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + CPPUNIT_ASSERT_EQUAL(int(GRID_LEVEL_SET), int(lsGrid->getGridClass())); + + FloatGrid::Ptr fogGrid = lsGrid->deepCopy(); + tools::sdfToFogVolume(*fogGrid); + CPPUNIT_ASSERT_EQUAL(int(GRID_FOG_VOLUME), int(fogGrid->getGridClass())); + + + GridPtrVec grids; + grids.push_back(intGrid); + grids.push_back(lsGrid); + grids.push_back(fogGrid); + + const char* filename = "testCompression.vdb2"; + SharedPtr scopedFile(filename, ::remove); + + size_t uncompressedSize = 0; + { + // Write the grids out to a file with compression disabled. + io::File vdbfile(filename); + vdbfile.setCompression(io::COMPRESS_NONE); + vdbfile.write(grids); + vdbfile.close(); + + // Get the size of the file in bytes. + struct stat buf; + buf.st_size = 0; + CPPUNIT_ASSERT_EQUAL(0, ::stat(filename, &buf)); + uncompressedSize = buf.st_size; + } + + // Write the grids out with various combinations of compression options + // and verify that they can be read back successfully. + // See io/Compression.h for the flag values. + +#ifdef OPENVDB_USE_BLOSC + std::vector validFlags{0x0,0x1,0x2,0x3,0x4,0x6}; +#else + std::vector validFlags{0x0,0x1,0x2,0x3}; +#endif + for (uint32_t flags : validFlags) { + + if (flags != io::COMPRESS_NONE) { + io::File vdbfile(filename); + vdbfile.setCompression(flags); + vdbfile.write(grids); + vdbfile.close(); + } + if (flags != io::COMPRESS_NONE) { + // Verify that the compressed file is significantly smaller than + // the uncompressed file. + size_t compressedSize = 0; + struct stat buf; + buf.st_size = 0; + CPPUNIT_ASSERT_EQUAL(0, ::stat(filename, &buf)); + compressedSize = buf.st_size; + CPPUNIT_ASSERT(compressedSize < size_t(0.75 * double(uncompressedSize))); + } + { + // Verify that the grids can be read back successfully. + + io::File vdbfile(filename); + vdbfile.open(); + + GridPtrVecPtr inGrids = vdbfile.getGrids(); + CPPUNIT_ASSERT_EQUAL(3, int(inGrids->size())); + + // Verify that the original and input grids are equal. + { + const IntGrid::Ptr grid = gridPtrCast((*inGrids)[0]); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(int(intGrid->getGridClass()), int(grid->getGridClass())); + + CPPUNIT_ASSERT(grid->tree().hasSameTopology(intGrid->tree())); + + CPPUNIT_ASSERT_EQUAL( + intGrid->tree().getValue(Coord(0)), + grid->tree().getValue(Coord(0))); + // Verify that leaf nodes with more than two distinct inactive values + // are handled correctly (FX-7085). + CPPUNIT_ASSERT_EQUAL( + intGrid->tree().getValue(Coord(6)), + grid->tree().getValue(Coord(6))); + CPPUNIT_ASSERT_EQUAL( + intGrid->tree().getValue(Coord(21)), + grid->tree().getValue(Coord(21))); + CPPUNIT_ASSERT_EQUAL( + intGrid->tree().getValue(Coord(23)), + grid->tree().getValue(Coord(23))); + + // Verify that the only active value in this grid is 999. + Int32 minVal = -1, maxVal = -1; + grid->evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(999, minVal); + CPPUNIT_ASSERT_EQUAL(999, maxVal); + } + for (int idx = 1; idx <= 2; ++idx) { + const FloatGrid::Ptr + grid = gridPtrCast((*inGrids)[idx]), + refGrid = gridPtrCast(grids[idx]); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT_EQUAL(int(refGrid->getGridClass()), int(grid->getGridClass())); + + CPPUNIT_ASSERT(grid->tree().hasSameTopology(refGrid->tree())); + + FloatGrid::ConstAccessor refAcc = refGrid->getConstAccessor(); + for (FloatGrid::ValueAllCIter it = grid->cbeginValueAll(); it; ++it) { + CPPUNIT_ASSERT_EQUAL(refAcc.getValue(it.getCoord()), *it); + } + } + } + } +} + + +//////////////////////////////////////// + + +namespace { + +using namespace openvdb; + +struct TestAsyncHelper +{ + std::set ids; + std::map filenames; + size_t refFileSize; + bool verbose; + + TestAsyncHelper(size_t _refFileSize): refFileSize(_refFileSize), verbose(false) {} + + ~TestAsyncHelper() + { + // Remove output files. + for (std::map::iterator it = filenames.begin(); + it != filenames.end(); ++it) + { + ::remove(it->second.c_str()); + } + filenames.clear(); + ids.clear(); + } + + io::Queue::Notifier notifier() + { + return std::bind(&TestAsyncHelper::validate, this, + std::placeholders::_1, std::placeholders::_2); + } + + void insert(io::Queue::Id id, const std::string& filename) + { + ids.insert(id); + filenames[id] = filename; + if (verbose) std::cerr << "queued " << filename << " as task " << id << "\n"; + } + + void validate(io::Queue::Id id, io::Queue::Status status) + { + if (verbose) { + std::ostringstream ostr; + ostr << "task " << id; + switch (status) { + case io::Queue::UNKNOWN: ostr << " is unknown"; break; + case io::Queue::PENDING: ostr << " is pending"; break; + case io::Queue::SUCCEEDED: ostr << " succeeded"; break; + case io::Queue::FAILED: ostr << " failed"; break; + } + std::cerr << ostr.str() << "\n"; + } + + if (status == io::Queue::SUCCEEDED) { + // If the task completed successfully, verify that the output file's + // size matches the reference file's size. + struct stat buf; + buf.st_size = 0; + CPPUNIT_ASSERT_EQUAL(0, ::stat(filenames[id].c_str(), &buf)); + CPPUNIT_ASSERT_EQUAL(Index64(refFileSize), Index64(buf.st_size)); + } + + if (status == io::Queue::SUCCEEDED || status == io::Queue::FAILED) { + ids.erase(id); + } + } +}; // struct TestAsyncHelper + +} // unnamed namespace + + +void +TestFile::testAsync() +{ + using namespace openvdb; + + // Register types. + openvdb::initialize(); + + // Create a grid. + FloatGrid::Ptr lsGrid = createLevelSet(); + unittest_util::makeSphere(/*dim=*/Coord(100), /*ctr=*/Vec3f(50, 50, 50), /*r=*/20.0, + *lsGrid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + + MetaMap fileMetadata; + fileMetadata.insertMeta("author", StringMetadata("Einstein")); + fileMetadata.insertMeta("year", Int32Metadata(2013)); + + GridPtrVec grids; + grids.push_back(lsGrid); + grids.push_back(lsGrid->deepCopy()); + grids.push_back(lsGrid->deepCopy()); + + size_t refFileSize = 0; + { + // Write a reference file without using asynchronous I/O. + const char* filename = "testAsyncref.vdb"; + SharedPtr scopedFile(filename, ::remove); + io::File f(filename); + f.write(grids, fileMetadata); + + // Record the size of the reference file. + struct stat buf; + buf.st_size = 0; + CPPUNIT_ASSERT_EQUAL(0, ::stat(filename, &buf)); + refFileSize = buf.st_size; + } + + { + // Output multiple files using asynchronous I/O. + // Use polling to get the status of the I/O tasks. + + TestAsyncHelper helper(refFileSize); + + io::Queue queue; + for (int i = 1; i < 10; ++i) { + std::ostringstream ostr; + ostr << "testAsync." << i << ".vdb"; + const std::string filename = ostr.str(); + io::Queue::Id id = queue.write(grids, io::File(filename), fileMetadata); + helper.insert(id, filename); + } + + tbb::tick_count start = tbb::tick_count::now(); + while (!helper.ids.empty()) { + if ((tbb::tick_count::now() - start).seconds() > 60) break; // time out after 1 minute + + // Wait one second for tasks to complete. + tbb::this_tbb_thread::sleep(tbb::tick_count::interval_t(1.0/*sec*/)); + + // Poll each task in the pending map. + std::set ids = helper.ids; // iterate over a copy + for (std::set::iterator it = ids.begin(); it != ids.end(); ++it) { + const io::Queue::Id id = *it; + const io::Queue::Status status = queue.status(id); + helper.validate(id, status); + } + } + CPPUNIT_ASSERT(helper.ids.empty()); + CPPUNIT_ASSERT(queue.empty()); + } + { + // Output multiple files using asynchronous I/O. + // Use notifications to get the status of the I/O tasks. + + TestAsyncHelper helper(refFileSize); + + io::Queue queue(/*capacity=*/2); + queue.addNotifier(helper.notifier()); + + for (int i = 1; i < 10; ++i) { + std::ostringstream ostr; + ostr << "testAsync" << i << ".vdb"; + const std::string filename = ostr.str(); + io::Queue::Id id = queue.write(grids, io::File(filename), fileMetadata); + helper.insert(id, filename); + } + while (!queue.empty()) { + tbb::this_tbb_thread::sleep(tbb::tick_count::interval_t(1.0/*sec*/)); + } + } + { + // Test queue timeout. + + io::Queue queue(/*capacity=*/1); + queue.setTimeout(0/*sec*/); + + SharedPtr + scopedFile1("testAsyncIOa.vdb", ::remove), + scopedFile2("testAsyncIOb.vdb", ::remove); + std::ofstream + file1(scopedFile1.get()), + file2(scopedFile2.get()); + + queue.write(grids, io::Stream(file1)); + + // With the queue length restricted to 1 and the timeout to 0 seconds, + // the next write() call should time out immediately with an exception. + // (It is possible, though highly unlikely, for the previous task to complete + // in time for this write() to actually succeed.) + CPPUNIT_ASSERT_THROW(queue.write(grids, io::Stream(file2)), openvdb::RuntimeError); + + while (!queue.empty()) { + tbb::this_tbb_thread::sleep(tbb::tick_count::interval_t(1.0/*sec*/)); + } + } +} + + +#ifdef OPENVDB_USE_BLOSC +// This tests for a data corruption bug that existed in versions of Blosc prior to 1.5.0 +// (see https://github.com/Blosc/c-blosc/pull/63). +void +TestFile::testBlosc() +{ + openvdb::initialize(); + + const unsigned char rawdata[] = { + 0x93, 0xb0, 0x49, 0xaf, 0x62, 0xad, 0xe3, 0xaa, 0xe4, 0xa5, 0x43, 0x20, 0x24, + 0x29, 0xc9, 0xaf, 0xee, 0xad, 0x0b, 0xac, 0x3d, 0xa8, 0x1f, 0x99, 0x53, 0x27, + 0xb6, 0x2b, 0x16, 0xb0, 0x5f, 0xae, 0x89, 0xac, 0x51, 0xa9, 0xfc, 0xa1, 0xc9, + 0x24, 0x59, 0x2a, 0x2f, 0x2d, 0xb4, 0xae, 0xeb, 0xac, 0x2f, 0xaa, 0xec, 0xa4, + 0x53, 0x21, 0x31, 0x29, 0x8f, 0x2c, 0x8e, 0x2e, 0x31, 0xad, 0xd6, 0xaa, 0x6d, + 0xa6, 0xad, 0x1b, 0x3e, 0x28, 0x0a, 0x2c, 0xfd, 0x2d, 0xf8, 0x2f, 0x45, 0xab, + 0x81, 0xa7, 0x1f, 0x95, 0x02, 0x27, 0x3d, 0x2b, 0x85, 0x2d, 0x75, 0x2f, 0xb6, + 0x30, 0x13, 0xa8, 0xb2, 0x9c, 0xf3, 0x25, 0x9c, 0x2a, 0x28, 0x2d, 0x0b, 0x2f, + 0x7b, 0x30, 0x68, 0x9e, 0x51, 0x25, 0x31, 0x2a, 0xe6, 0x2c, 0xbc, 0x2e, 0x4e, + 0x30, 0x5a, 0xb0, 0xe6, 0xae, 0x0e, 0xad, 0x59, 0xaa, 0x08, 0xa5, 0x89, 0x21, + 0x59, 0x29, 0xb0, 0x2c, 0x57, 0xaf, 0x8c, 0xad, 0x6f, 0xab, 0x65, 0xa7, 0xd3, + 0x12, 0xf5, 0x27, 0xeb, 0x2b, 0xf6, 0x2d, 0xee, 0xad, 0x27, 0xac, 0xab, 0xa8, + 0xb1, 0x9f, 0xa2, 0x25, 0xaa, 0x2a, 0x4a, 0x2d, 0x47, 0x2f, 0x7b, 0xac, 0x6d, + 0xa9, 0x45, 0xa3, 0x73, 0x23, 0x9d, 0x29, 0xb7, 0x2c, 0xa8, 0x2e, 0x51, 0x30, + 0xf7, 0xa9, 0xec, 0xa4, 0x79, 0x20, 0xc5, 0x28, 0x3f, 0x2c, 0x24, 0x2e, 0x09, + 0x30, 0xc8, 0xa5, 0xb1, 0x1c, 0x23, 0x28, 0xc3, 0x2b, 0xba, 0x2d, 0x9c, 0x2f, + 0xc3, 0x30, 0x44, 0x18, 0x6e, 0x27, 0x3d, 0x2b, 0x6b, 0x2d, 0x40, 0x2f, 0x8f, + 0x30, 0x02, 0x27, 0xed, 0x2a, 0x36, 0x2d, 0xfe, 0x2e, 0x68, 0x30, 0x66, 0xae, + 0x9e, 0xac, 0x96, 0xa9, 0x7c, 0xa3, 0xa9, 0x23, 0xc5, 0x29, 0xd8, 0x2c, 0xd7, + 0x2e, 0x0e, 0xad, 0x90, 0xaa, 0xe4, 0xa5, 0xf8, 0x1d, 0x82, 0x28, 0x2b, 0x2c, + 0x1e, 0x2e, 0x0c, 0x30, 0x53, 0xab, 0x9c, 0xa7, 0xd4, 0x96, 0xe7, 0x26, 0x30, + 0x2b, 0x7f, 0x2d, 0x6e, 0x2f, 0xb3, 0x30, 0x74, 0xa8, 0xb1, 0x9f, 0x36, 0x25, + 0x3e, 0x2a, 0xfa, 0x2c, 0xdd, 0x2e, 0x65, 0x30, 0xfc, 0xa1, 0xe0, 0x23, 0x82, + 0x29, 0x8f, 0x2c, 0x66, 0x2e, 0x23, 0x30, 0x2d, 0x22, 0xfb, 0x28, 0x3f, 0x2c, + 0x0a, 0x2e, 0xde, 0x2f, 0xaa, 0x28, 0x0a, 0x2c, 0xc8, 0x2d, 0x8f, 0x2f, 0xb0, + 0x30, 0xde, 0x2b, 0xa0, 0x2d, 0x5a, 0x2f, 0x8f, 0x30, 0x12, 0xac, 0x9d, 0xa8, + 0x0f, 0xa0, 0x51, 0x25, 0x66, 0x2a, 0x1b, 0x2d, 0x0b, 0x2f, 0x82, 0x30, 0x7b, + 0xa9, 0xea, 0xa3, 0x63, 0x22, 0x3f, 0x29, 0x7b, 0x2c, 0x60, 0x2e, 0x26, 0x30, + 0x76, 0xa5, 0xf8, 0x1d, 0x4c, 0x28, 0xeb, 0x2b, 0xce, 0x2d, 0xb0, 0x2f, 0xd3, + 0x12, 0x1d, 0x27, 0x15, 0x2b, 0x57, 0x2d, 0x2c, 0x2f, 0x85, 0x30, 0x0e, 0x26, + 0x74, 0x2a, 0xfa, 0x2c, 0xc3, 0x2e, 0x4a, 0x30, 0x08, 0x2a, 0xb7, 0x2c, 0x74, + 0x2e, 0x1d, 0x30, 0x8f, 0x2c, 0x3f, 0x2e, 0xf8, 0x2f, 0x24, 0x2e, 0xd0, 0x2f, + 0xc3, 0x30, 0xdb, 0xa6, 0xd3, 0x0e, 0x38, 0x27, 0x3d, 0x2b, 0x78, 0x2d, 0x5a, + 0x2f, 0xa3, 0x30, 0x68, 0x9e, 0x51, 0x25, 0x31, 0x2a, 0xe6, 0x2c, 0xbc, 0x2e, + 0x4e, 0x30, 0xa9, 0x23, 0x59, 0x29, 0x6e, 0x2c, 0x38, 0x2e, 0x06, 0x30, 0xb8, + 0x28, 0x10, 0x2c, 0xce, 0x2d, 0x95, 0x2f, 0xb3, 0x30, 0x9b, 0x2b, 0x7f, 0x2d, + 0x39, 0x2f, 0x7f, 0x30, 0x4a, 0x2d, 0xf8, 0x2e, 0x58, 0x30, 0xd0, 0x2e, 0x3d, + 0x30, 0x30, 0x30, 0x53, 0x21, 0xc5, 0x28, 0x24, 0x2c, 0xef, 0x2d, 0xc3, 0x2f, + 0xda, 0x27, 0x58, 0x2b, 0x6b, 0x2d, 0x33, 0x2f, 0x82, 0x30, 0x9c, 0x2a, 0x00, + 0x2d, 0xbc, 0x2e, 0x41, 0x30, 0xb0, 0x2c, 0x60, 0x2e, 0x0c, 0x30, 0x1e, 0x2e, + 0xca, 0x2f, 0xc0, 0x30, 0x95, 0x2f, 0x9f, 0x30, 0x8c, 0x30, 0x23, 0x2a, 0xc4, + 0x2c, 0x81, 0x2e, 0x23, 0x30, 0x5a, 0x2c, 0x0a, 0x2e, 0xc3, 0x2f, 0xc3, 0x30, + 0xad, 0x2d, 0x5a, 0x2f, 0x88, 0x30, 0x0b, 0x2f, 0x5b, 0x30, 0x3a, 0x30, 0x7f, + 0x2d, 0x2c, 0x2f, 0x72, 0x30, 0xc3, 0x2e, 0x37, 0x30, 0x09, 0x30, 0xb6, 0x30 + }; + + const char* indata = reinterpret_cast(rawdata); + size_t inbytes = sizeof(rawdata); + + const int + compbufbytes = int(inbytes + BLOSC_MAX_OVERHEAD), + decompbufbytes = int(inbytes + BLOSC_MAX_OVERHEAD); + + std::unique_ptr + compresseddata(new char[compbufbytes]), + outdata(new char[decompbufbytes]); + + for (int compcode = 0; compcode <= BLOSC_ZLIB; ++compcode) { + char* compname = nullptr; +#if BLOSC_VERSION_MAJOR > 1 || (BLOSC_VERSION_MAJOR == 1 && BLOSC_VERSION_MINOR >= 15) + if (0 > blosc_compcode_to_compname(compcode, const_cast(&compname))) +#else + if (0 > blosc_compcode_to_compname(compcode, &compname)) +#endif + continue; + /// @todo This changes the compressor setting globally. + if (blosc_set_compressor(compname) < 0) continue; + + for (int typesize = 1; typesize <= 4; ++typesize) { + + // Compress the data. + ::memset(compresseddata.get(), 0, compbufbytes); + int compressedbytes = blosc_compress( + /*clevel=*/9, + /*doshuffle=*/true, + typesize, + /*srcsize=*/inbytes, + /*src=*/indata, + /*dest=*/compresseddata.get(), + /*destsize=*/compbufbytes); + + CPPUNIT_ASSERT(compressedbytes > 0); + + // Decompress the data. + ::memset(outdata.get(), 0, decompbufbytes); + int outbytes = blosc_decompress( + compresseddata.get(), outdata.get(), decompbufbytes); + + CPPUNIT_ASSERT(outbytes > 0); + CPPUNIT_ASSERT_EQUAL(int(inbytes), outbytes); + + // Compare original and decompressed data. + int diff = 0; + for (size_t i = 0; i < inbytes; ++i) { + if (outdata[i] != indata[i]) ++diff; + } + if (diff > 0) { + const char* mesg = "Your version of the Blosc library is most likely" + " out of date; please install the latest version. " + "(Earlier versions have a bug that can cause data corruption.)"; + CPPUNIT_ASSERT_MESSAGE(mesg, diff == 0); + return; + } + } + } +} +#endif + + +void +TestFile::testDelayedLoadMetadata() +{ + openvdb::initialize(); + + using namespace openvdb; + + io::File file("something.vdb2"); + + // Create a level set grid. + auto lsGrid = createLevelSet(); + lsGrid->setName("sphere"); + unittest_util::makeSphere(/*dim=*/Coord(100), /*ctr=*/Vec3f(50, 50, 50), /*r=*/20.0, + *lsGrid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + + // Write the VDB to a string stream. + std::ostringstream ostr(std::ios_base::binary); + + // Create the grid descriptor out of this grid. + io::GridDescriptor gd(Name("sphere"), lsGrid->type()); + + // Write out the grid. + file.writeGrid(gd, lsGrid, ostr, /*seekable=*/true); + + // Duplicate VDB string stream. + std::ostringstream ostr2(std::ios_base::binary); + + { // Read back in, clip and write out again to verify metadata is rebuilt. + std::istringstream istr(ostr.str(), std::ios_base::binary); + io::setVersion(istr, file.libraryVersion(), file.fileVersion()); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + + const BBoxd clipBbox(Vec3d(-10.0,-10.0,-10.0), Vec3d(10.0,10.0,10.0)); + io::Archive::readGrid(grid, gd2, istr, clipBbox); + + // Verify clipping is working as expected. + CPPUNIT_ASSERT(grid->baseTreePtr()->leafCount() < lsGrid->tree().leafCount()); + + file.writeGrid(gd, grid, ostr2, /*seekable=*/true); + } + + // Since the input is only a fragment of a VDB file (in particular, + // it doesn't have a header), set the file format version number explicitly. + // On read, the delayed load metadata for OpenVDB library versions less than 6.1 + // should be removed to ensure correctness as it possible for the metadata to + // have been treated as unknown and blindly copied over when read and re-written + // using this library version resulting in out-of-sync metadata. + + // By default, DelayedLoadMetadata is dropped from the grid during read so + // as not to be exposed to the user. + + { // read using current library version + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, file.libraryVersion(), file.fileVersion()); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(!((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + // To test the version mechanism, a stream metadata object is created with + // a non-zero test value and set on the input stream. This disables the + // behaviour where the DelayedLoadMetadata is dropped from the grid. + + io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata); + streamMetadata->__setTest(uint32_t(1)); + + { // read using current library version + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, file.libraryVersion(), file.fileVersion()); + io::setStreamMetadataPtr(istr, streamMetadata, /*transfer=*/false); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + { // read using library version of 5.0 + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, VersionId(5,0), file.fileVersion()); + io::setStreamMetadataPtr(istr, streamMetadata, /*transfer=*/false); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(!((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + { // read using library version of 4.9 + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, VersionId(4,9), file.fileVersion()); + io::setStreamMetadataPtr(istr, streamMetadata, /*transfer=*/false); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(!((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + { // read using library version of 6.1 + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, VersionId(6,1), file.fileVersion()); + io::setStreamMetadataPtr(istr, streamMetadata, /*transfer=*/false); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(!((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + { // read using library version of 6.2 + std::istringstream istr(ostr2.str(), std::ios_base::binary); + io::setVersion(istr, VersionId(6,2), file.fileVersion()); + io::setStreamMetadataPtr(istr, streamMetadata, /*transfer=*/false); + + io::GridDescriptor gd2; + GridBase::Ptr grid = gd2.read(istr); + gd2.seekToGrid(istr); + io::Archive::readGrid(grid, gd2, istr); + + CPPUNIT_ASSERT(((*grid)[GridBase::META_FILE_DELAYED_LOAD])); + } + + remove("something.vdb2"); +} diff --git a/openvdb/unittest/TestFindActiveValues.cc b/openvdb/unittest/TestFindActiveValues.cc new file mode 100644 index 00000000..94aa3022 --- /dev/null +++ b/openvdb/unittest/TestFindActiveValues.cc @@ -0,0 +1,305 @@ +/////////////////////////////////////////////////////////////////////////// +// +// Copyright (c) Ken Museth +// +// All rights reserved. This software is distributed under the +// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ ) +// +// Redistributions of source code must retain the above copyright +// and license notice and the following restrictions and disclaimer. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE +// LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00. +// +/////////////////////////////////////////////////////////////////////////// + +#include // for remove() +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + + +class TestFindActiveValues: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestFindActiveValues); + CPPUNIT_TEST(testBasic); + CPPUNIT_TEST(testSphere1); + CPPUNIT_TEST(testSphere2); + CPPUNIT_TEST(testSparseBox); + CPPUNIT_TEST(testDenseBox); + CPPUNIT_TEST(testBenchmarks); + CPPUNIT_TEST_SUITE_END(); + + void testBasic(); + void testSphere1(); + void testSphere2(); + void testSparseBox(); + void testDenseBox(); + void testBenchmarks(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestFindActiveValues); + +void +TestFindActiveValues::testBasic() +{ + const float background = 5.0f; + openvdb::FloatTree tree(background); + const openvdb::Coord min(-1,-2,30), max(20,30,55); + const openvdb::CoordBBox bbox(min[0], min[1], min[2], + max[0], max[1], max[2]); + + CPPUNIT_ASSERT(openvdb::tools::noActiveValues(tree, bbox)); + + tree.setValue(min.offsetBy(-1), 1.0f); + CPPUNIT_ASSERT(openvdb::tools::noActiveValues(tree, bbox)); + tree.setValue(max.offsetBy( 1), 1.0f); + CPPUNIT_ASSERT(openvdb::tools::noActiveValues(tree, bbox)); + tree.setValue(min, 1.0f); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, bbox)); + tree.setValue(max, 1.0f); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, bbox)); +} + +void +TestFindActiveValues::testSphere1() +{ + const openvdb::Vec3f center(0.5f, 0.5f, 0.5f); + const float radius = 0.3f; + const int dim = 100, half_width = 3; + const float voxel_size = 1.0f/dim; + + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(/*background=*/half_width*voxel_size); + const openvdb::FloatTree& tree = grid->tree(); + grid->setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/voxel_size)); + unittest_util::makeSphere( + openvdb::Coord(dim), center, radius, *grid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + + const int c = int(0.5f/voxel_size); + const openvdb::CoordBBox a(openvdb::Coord(c), openvdb::Coord(c+ 8)); + CPPUNIT_ASSERT(!tree.isValueOn(openvdb::Coord(c))); + CPPUNIT_ASSERT(!openvdb::tools::anyActiveValues(tree, a)); + + const openvdb::Coord d(c + int(radius/voxel_size), c, c); + CPPUNIT_ASSERT(tree.isValueOn(d)); + const auto b = openvdb::CoordBBox::createCube(d, 4); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, b)); + + const openvdb::CoordBBox e(openvdb::Coord(0), openvdb::Coord(dim)); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, e)); +} + +void +TestFindActiveValues::testSphere2() +{ + const openvdb::Vec3f center(0.0f); + const float radius = 0.5f; + const int dim = 400, halfWidth = 3; + const float voxelSize = 2.0f/dim; + auto grid = openvdb::tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + openvdb::FloatTree& tree = grid->tree(); + + {//test center + const openvdb::CoordBBox bbox(openvdb::Coord(0), openvdb::Coord(8)); + CPPUNIT_ASSERT(!tree.isValueOn(openvdb::Coord(0))); + //openvdb::util::CpuTimer timer("\ncenter"); + CPPUNIT_ASSERT(!openvdb::tools::anyActiveValues(tree, bbox)); + //timer.stop(); + } + {//test on sphere + const openvdb::Coord d(int(radius/voxelSize), 0, 0); + CPPUNIT_ASSERT(tree.isValueOn(d)); + const auto bbox = openvdb::CoordBBox::createCube(d, 4); + //openvdb::util::CpuTimer timer("\non sphere"); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, bbox)); + //timer.stop(); + } + {//test full domain + const openvdb::CoordBBox bbox(openvdb::Coord(-4000), openvdb::Coord(4000)); + //openvdb::util::CpuTimer timer("\nfull domain"); + CPPUNIT_ASSERT(openvdb::tools::anyActiveValues(tree, bbox)); + //timer.stop(); + openvdb::tools::FindActiveValues op(tree); + CPPUNIT_ASSERT(op.count(bbox) == tree.activeVoxelCount()); + } + {// find largest inscribed cube in index space containing NO active values + openvdb::tools::FindActiveValues op(tree); + auto bbox = openvdb::CoordBBox::createCube(openvdb::Coord(0), 1); + //openvdb::util::CpuTimer timer("\nInscribed cube (class)"); + int count = 0; + while(op.none(bbox)) { + ++count; + bbox.expand(1); + } + //const double t = timer.stop(); + //std::cerr << "Inscribed bbox = " << bbox << std::endl; + const int n = int(openvdb::math::Sqrt(openvdb::math::Pow2(radius-halfWidth*voxelSize)/3.0f)/voxelSize) + 1; + //std::cerr << "n=" << n << std::endl; + CPPUNIT_ASSERT( bbox.max() == openvdb::Coord( n)); + CPPUNIT_ASSERT( bbox.min() == openvdb::Coord(-n)); + //openvdb::util::printTime(std::cerr, t/count, "time per lookup ", "\n", true, 4, 3); + } + {// find largest inscribed cube in index space containing NO active values + auto bbox = openvdb::CoordBBox::createCube(openvdb::Coord(0), 1); + //openvdb::util::CpuTimer timer("\nInscribed cube (func)"); + int count = 0; + while(!openvdb::tools::anyActiveValues(tree, bbox)) { + bbox.expand(1); + ++count; + } + //const double t = timer.stop(); + //std::cerr << "Inscribed bbox = " << bbox << std::endl; + const int n = int(openvdb::math::Sqrt(openvdb::math::Pow2(radius-halfWidth*voxelSize)/3.0f)/voxelSize) + 1; + //std::cerr << "n=" << n << std::endl; + //openvdb::util::printTime(std::cerr, t/count, "time per lookup ", "\n", true, 4, 3); + CPPUNIT_ASSERT( bbox.max() == openvdb::Coord( n)); + CPPUNIT_ASSERT( bbox.min() == openvdb::Coord(-n)); + } +} + +void +TestFindActiveValues::testSparseBox() +{ + {//test active tiles in a sparsely filled box + const int half_dim = 256; + const openvdb::CoordBBox bbox(openvdb::Coord(-half_dim), openvdb::Coord(half_dim)); + openvdb::FloatTree tree; + CPPUNIT_ASSERT(tree.activeTileCount() == 0); + CPPUNIT_ASSERT(tree.getValueDepth(openvdb::Coord(0)) == -1);//background value + openvdb::tools::FindActiveValues op(tree); + tree.sparseFill(bbox, 1.0f, true); + op.update(tree);//tree was modified so op needs to be updated + CPPUNIT_ASSERT(tree.activeTileCount() > 0); + CPPUNIT_ASSERT(tree.getValueDepth(openvdb::Coord(0)) == 1);//upper internal tile value + for (int i=1; i op(tree); + CPPUNIT_ASSERT(tree.getValueDepth(openvdb::Coord(0)) == 3);// leaf value + for (int i=1; i op(tree); + //double t = 0.0; + //util::CpuTimer timer; + for (auto b = CoordBBox::createCube(Coord(-half_dim), bbox_size); true; b.translate(Coord(1))) { + //timer.restart(); + bool test = op.any(b); + //t = std::max(t, timer.restart()); + if (!test) break; + } + //std::cout << "\n*The slowest sparse test " << t << " milliseconds\n"; + CPPUNIT_ASSERT(op.count(bbox) == bbox.volume()); + } + {//benchmark test against active voxels in a densely filled box + using namespace openvdb; + const int half_dim = 256, bbox_size = 1; + const CoordBBox bbox(Coord(-half_dim), Coord(half_dim)); + FloatTree tree; + tree.denseFill(bbox, 1.0f, true); + tools::FindActiveValues op(tree); + //double t = 0.0; + //openvdb::util::CpuTimer timer; + for (auto b = CoordBBox::createCube(Coord(-half_dim), bbox_size); true; b.translate(Coord(1))) { + //timer.restart(); + bool test = op.any(b); + //t = std::max(t, timer.restart()); + if (!test) break; + } + //std::cout << "*The slowest dense test " << t << " milliseconds\n"; + CPPUNIT_ASSERT(op.count(bbox) == bbox.volume()); + } + {//benchmark test against active voxels in a densely filled box + using namespace openvdb; + FloatTree tree; + tree.denseFill(CoordBBox::createCube(Coord(0), 256), 1.0f, true); + tools::FindActiveValues op(tree); + //openvdb::util::CpuTimer timer("new test"); + CPPUNIT_ASSERT(op.none(CoordBBox::createCube(Coord(256), 1))); + //timer.stop(); + } +} + +// Copyright (c) Ken Museth +// All rights reserved. This software is distributed under the +// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ ) diff --git a/openvdb/unittest/TestFloatMetadata.cc b/openvdb/unittest/TestFloatMetadata.cc new file mode 100644 index 00000000..b6ff5a63 --- /dev/null +++ b/openvdb/unittest/TestFloatMetadata.cc @@ -0,0 +1,46 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + + +class TestFloatMetadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestFloatMetadata); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestFloatMetadata); + +void +TestFloatMetadata::test() +{ + using namespace openvdb; + + Metadata::Ptr m(new FloatMetadata(1.0)); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("float") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("float") == 0); + + FloatMetadata *s = dynamic_cast(m.get()); + //CPPUNIT_ASSERT(s->value() == 1.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0f,s->value(),0); + s->value() = 2.0; + //CPPUNIT_ASSERT(s->value() == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0f,s->value(),0); + m2->copy(*s); + + s = dynamic_cast(m2.get()); + //CPPUNIT_ASSERT(s->value() == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0f,s->value(),0); +} diff --git a/openvdb/unittest/TestGradient.cc b/openvdb/unittest/TestGradient.cc new file mode 100644 index 00000000..3fc711a2 --- /dev/null +++ b/openvdb/unittest/TestGradient.cc @@ -0,0 +1,786 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include +#include + + +class TestGradient: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestGradient); + CPPUNIT_TEST(testISGradient); // gradient in index space + CPPUNIT_TEST(testISGradientStencil); + CPPUNIT_TEST(testWSGradient); // gradient in world space + CPPUNIT_TEST(testWSGradientStencil); + CPPUNIT_TEST(testWSGradientStencilFrustum); + CPPUNIT_TEST(testWSGradientNormSqr); // gradient norm sqr (world space only) + CPPUNIT_TEST(testWSGradientNormSqrStencil); // gradient norm sqr (world space only) + CPPUNIT_TEST(testGradientTool); // gradient tool + CPPUNIT_TEST(testGradientMaskedTool); // gradient tool + CPPUNIT_TEST(testIntersectsIsoValue); // zero-crossing + CPPUNIT_TEST(testOldStyleStencils); // old stencil impl - deprecate + + CPPUNIT_TEST_SUITE_END(); + + void testISGradient(); + void testISGradientStencil(); + void testWSGradient(); + void testWSGradientStencilFrustum(); + void testWSGradientStencil(); + void testWSGradientNormSqr(); + void testWSGradientNormSqrStencil(); + void testGradientTool(); + void testGradientMaskedTool(); + void testIntersectsIsoValue(); + void testOldStyleStencils(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGradient); + + +void +TestGradient::testISGradient() +{ + using namespace openvdb; + + using AccessorType = FloatGrid::ConstAccessor; + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius=10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + const Coord xyz(10, 20, 30); + + + // Index Space Gradients: random access and stencil version + AccessorType inAccessor = grid->getConstAccessor(); + Vec3f result; + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.02); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.02); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); +} + + +void +TestGradient::testISGradientStencil() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + const Coord xyz(10, 20, 30); + + + // Index Space Gradients: stencil version + Vec3f result; + // this stencil is large enough for all thie different schemes used + // in this test + math::NineteenPointStencil stencil(*grid); + stencil.moveTo(xyz); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.02); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.02); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::ISGradient::result(stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); +} + + +void +TestGradient::testWSGradient() +{ + using namespace openvdb; + + using AccessorType = FloatGrid::ConstAccessor; + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + const Coord xyz(11, 17, 26); + + AccessorType inAccessor = grid->getConstAccessor(); + // try with a map + + // Index Space Gradients: stencil version + Vec3f result; + math::MapBase::Ptr rotated_map; + { + math::UniformScaleMap map(voxel_size); + result = math::Gradient::result( + map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + rotated_map = map.preRotate(1.5, math::X_AXIS); + // verify the new map is an affine map + CPPUNIT_ASSERT(rotated_map->type() == math::AffineMap::mapType()); + math::AffineMap::Ptr affine_map = + StaticPtrCast(rotated_map); + // the gradient should have the same length even after rotation + result = math::Gradient::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + result = math::Gradient::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + math::UniformScaleTranslateMap map(voxel_size, Vec3d(0,0,0)); + result = math::Gradient::result( + map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + math::ScaleTranslateMap map(Vec3d(voxel_size, voxel_size, voxel_size), Vec3d(0,0,0)); + result = math::Gradient::result( + map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + + { + // this map has no scale, expect result/voxel_spaceing = 1 + math::TranslationMap map; + result = math::Gradient::result(map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(voxel_size, result.length(), /*tolerance=*/0.01); + } + + { + // test the GenericMap Grid interface + math::GenericMap generic_map(*grid); + result = math::Gradient::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test the GenericMap Transform interface + math::GenericMap generic_map(grid->transform()); + result = math::Gradient::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test the GenericMap Map interface + math::GenericMap generic_map(rotated_map); + result = math::Gradient::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test a map with non-uniform SCALING AND ROTATION + Vec3d voxel_sizes(0.25, 0.45, 0.75); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + // apply rotation + rotated_map = base_map->preRotate(1.5, math::X_AXIS); + grid->setTransform(math::Transform::Ptr(new math::Transform(rotated_map))); + // remake the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + math::AffineMap::Ptr affine_map = + StaticPtrCast(rotated_map); + + // math::ScaleMap map(voxel_sizes); + result = math::Gradient::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test a map with non-uniform SCALING + Vec3d voxel_sizes(0.25, 0.45, 0.75); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + grid->setTransform(math::Transform::Ptr(new math::Transform(base_map))); + // remake the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + math::ScaleMap::Ptr scale_map = StaticPtrCast(base_map); + + // math::ScaleMap map(voxel_sizes); + result = math::Gradient::result(*scale_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } +} + +void +TestGradient::testWSGradientStencilFrustum() +{ + using namespace openvdb; + + // Construct a frustum that matches the one in TestMaps::testFrustum() + + openvdb::BBoxd bbox(Vec3d(0), Vec3d(100)); + math::NonlinearFrustumMap frustum(bbox, 1./6., 5); + /// frustum will have depth, far plane - near plane = 5 + /// the frustum has width 1 in the front and 6 in the back + + Vec3d trans(2,2,2); + math::NonlinearFrustumMap::Ptr map = + StaticPtrCast( + frustum.preScale(Vec3d(10,10,10))->postTranslate(trans)); + + + // Create a grid with this frustum + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/0.f); + math::Transform::Ptr transform = math::Transform::Ptr( new math::Transform(map)); + grid->setTransform(transform); + + FloatGrid::Accessor acc = grid->getAccessor(); + // Totally fill the interior of the frustum with word space distances + // from its center. + + + math::Vec3d isCenter(.5 * 101, .5 * 101, .5 * 101); + math::Vec3d wsCenter = map->applyMap(isCenter); + + math::Coord ijk; + + // convert to IntType + Vec3i min(bbox.min()); + Vec3i max = Vec3i(bbox.max()) + Vec3i(1, 1, 1); + + for (ijk[0] = min.x(); ijk[0] < max.x(); ++ijk[0]) { + for (ijk[1] = min.y(); ijk[1] < max.y(); ++ijk[1]) { + for (ijk[2] = min.z(); ijk[2] < max.z(); ++ijk[2]) { + const math::Vec3d wsLocation = transform->indexToWorld(ijk); + const float dis = float((wsLocation - wsCenter).length()); + + acc.setValue(ijk, dis); + } + } + } + + + { + // test at location 10, 10, 10 in index space + math::Coord xyz(10, 10, 10); + + math::Vec3s result = + math::Gradient::result(*map, acc, xyz); + + // The Gradient should be unit lenght for this case + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + math::Vec3d wsVec = transform->indexToWorld(xyz); + math::Vec3d direction = (wsVec - wsCenter); + direction.normalize(); + + // test the actual direction of the gradient + CPPUNIT_ASSERT(direction.eq(result, 0.01 /*tolerance*/)); + } + + { + // test at location 30, 30, 60 in index space + math::Coord xyz(30, 30, 60); + + math::Vec3s result = + math::Gradient::result(*map, acc, xyz); + + // The Gradient should be unit lenght for this case + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + math::Vec3d wsVec = transform->indexToWorld(xyz); + math::Vec3d direction = (wsVec - wsCenter); + direction.normalize(); + + // test the actual direction of the gradient + CPPUNIT_ASSERT(direction.eq(result, 0.01 /*tolerance*/)); + } +} + + + +void +TestGradient::testWSGradientStencil() +{ + using namespace openvdb; + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f ,10.0f);//i.e. (12,16,20) in index space + const float radius = 10; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + const Coord xyz(11, 17, 26); + + // try with a map + math::SevenPointStencil stencil(*grid); + stencil.moveTo(xyz); + + math::SecondOrderDenseStencil dense_2ndOrder(*grid); + dense_2ndOrder.moveTo(xyz); + + math::FourthOrderDenseStencil dense_4thOrder(*grid); + dense_4thOrder.moveTo(xyz); + + Vec3f result; + math::MapBase::Ptr rotated_map; + { + math::UniformScaleMap map(voxel_size); + result = math::Gradient::result( + map, stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + rotated_map = map.preRotate(1.5, math::X_AXIS); + // verify the new map is an affine map + CPPUNIT_ASSERT(rotated_map->type() == math::AffineMap::mapType()); + math::AffineMap::Ptr affine_map = + StaticPtrCast(rotated_map); + // the gradient should have the same length even after rotation + + result = math::Gradient::result( + *affine_map, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + + result = math::Gradient::result( + *affine_map, dense_4thOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + math::UniformScaleTranslateMap map(voxel_size, Vec3d(0,0,0)); + + result = math::Gradient::result(map, stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + math::ScaleTranslateMap map(Vec3d(voxel_size, voxel_size, voxel_size), Vec3d(0,0,0)); + result = math::Gradient::result(map, stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + math::TranslationMap map; + result = math::Gradient::result(map, stencil); + // value = 1 because the translation map assumes uniform spacing + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, result.length(), /*tolerance=*/0.01); + } + { + // test the GenericMap Grid interface + math::GenericMap generic_map(*grid); + result = math::Gradient::result( + generic_map, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test the GenericMap Transform interface + math::GenericMap generic_map(grid->transform()); + result = math::Gradient::result( + generic_map, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test the GenericMap Map interface + math::GenericMap generic_map(rotated_map); + result = math::Gradient::result( + generic_map, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test a map with non-uniform SCALING AND ROTATION + Vec3d voxel_sizes(0.25, 0.45, 0.75); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + // apply rotation + rotated_map = base_map->preRotate(1.5, math::X_AXIS); + grid->setTransform(math::Transform::Ptr(new math::Transform(rotated_map))); + // remake the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + math::AffineMap::Ptr affine_map = + StaticPtrCast(rotated_map); + + stencil.moveTo(xyz); + result = math::Gradient::result(*affine_map, stencil); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } + { + // test a map with NON-UNIFORM SCALING + Vec3d voxel_sizes(0.5, 1.0, 0.75); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + grid->setTransform(math::Transform::Ptr(new math::Transform(base_map))); + // remake the sphere + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + math::ScaleMap map(voxel_sizes); + dense_2ndOrder.moveTo(xyz); + + result = math::Gradient::result(map, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, result.length(), /*tolerance=*/0.01); + } +} + + +void +TestGradient::testWSGradientNormSqr() +{ + using namespace openvdb; + + using AccessorType = FloatGrid::ConstAccessor; + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f,8.0f,10.0f);//i.e. (12,16,20) in index space + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + const Coord xyz(11, 17, 26); + + AccessorType inAccessor = grid->getConstAccessor(); + + // test gradient in index and world space using the 7-pt stencil + math::UniformScaleMap uniform_scale(voxel_size); + FloatTree::ValueType normsqrd; + normsqrd = math::GradientNormSqrd::result( + uniform_scale, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.07); + + // test world space using the 13pt stencil + normsqrd = math::GradientNormSqrd::result( + uniform_scale, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.05); + + math::AffineMap affine(voxel_size*math::Mat3d::identity()); + normsqrd = math::GradientNormSqrd::result( + affine, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.07); + + normsqrd = math::GradientNormSqrd::result( + uniform_scale, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.05); +} + + +void +TestGradient::testWSGradientNormSqrStencil() +{ + using namespace openvdb; + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + const Coord xyz(11, 17, 26); + + math::SevenPointStencil sevenpt(*grid); + sevenpt.moveTo(xyz); + + math::ThirteenPointStencil thirteenpt(*grid); + thirteenpt.moveTo(xyz); + + math::SecondOrderDenseStencil dense_2ndOrder(*grid); + dense_2ndOrder.moveTo(xyz); + + math::NineteenPointStencil nineteenpt(*grid); + nineteenpt.moveTo(xyz); + + // test gradient in index and world space using the 7-pt stencil + math::UniformScaleMap uniform_scale(voxel_size); + FloatTree::ValueType normsqrd; + normsqrd = math::GradientNormSqrd::result( + uniform_scale, sevenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.07); + + + // test gradient in index and world space using the 13pt stencil + normsqrd = math::GradientNormSqrd::result( + uniform_scale, thirteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.05); + + math::AffineMap affine(voxel_size*math::Mat3d::identity()); + normsqrd = math::GradientNormSqrd::result( + affine, dense_2ndOrder); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.07); + + normsqrd = math::GradientNormSqrd::result( + uniform_scale, nineteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, normsqrd, /*tolerance=*/0.05); +} + + +void +TestGradient::testGradientTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64, 64, 64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + const Coord xyz(10, 20, 30); + + Vec3SGrid::Ptr grad = tools::gradient(*grid); + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(grad->activeVoxelCount())); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, grad->getConstAccessor().getValue(xyz).length(), + /*tolerance=*/0.01); +} + + +void +TestGradient::testGradientMaskedTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64, 64, 64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius = 10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41)); + BoolGrid::Ptr maskGrid = BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + Vec3SGrid::Ptr grad = tools::gradient(*grid, *maskGrid); + {// outside the masked region + const Coord xyz(10, 20, 30); + CPPUNIT_ASSERT(!maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, grad->getConstAccessor().getValue(xyz).length(), + /*tolerance=*/0.01); + } + {// inside the masked region + const Coord xyz(38, 35, 33); + CPPUNIT_ASSERT(maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, grad->getConstAccessor().getValue(xyz).length(), + /*tolerance=*/0.01); + } +} + + +void +TestGradient::testIntersectsIsoValue() +{ + using namespace openvdb; + + {// test zero crossing in -x + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(-1,0,0), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT( stencil.intersects( )); + CPPUNIT_ASSERT( stencil.intersects( 0.0f)); + CPPUNIT_ASSERT( stencil.intersects( 2.0f)); + CPPUNIT_ASSERT(!stencil.intersects( 5.5f)); + CPPUNIT_ASSERT(!stencil.intersects(-2.5f)); + } + {// test zero crossing in +x + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(1,0,0), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } + {// test zero crossing in -y + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(0,-1,0), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } + {// test zero crossing in y + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(0,1,0), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } + {// test zero crossing in -z + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(0,0,-1), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } + {// test zero crossing in z + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(0,0,1), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } + {// test zero crossing in -x & z + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(-1,0,1), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(!stencil.intersects()); + } + {// test zero multiple crossings + FloatGrid grid(/*backgroundValue=*/5.0); + FloatTree& tree = grid.tree(); + Coord xyz(2,-5,60); + tree.setValue(xyz, 1.3f); + tree.setValue(xyz.offsetBy(-1, 0, 1), -1.0f); + tree.setValue(xyz.offsetBy( 0, 0, 1), -2.0f); + tree.setValue(xyz.offsetBy( 0, 1, 0), -3.0f); + tree.setValue(xyz.offsetBy( 0, 0,-1), -2.0f); + math::SevenPointStencil stencil(grid); + stencil.moveTo(xyz); + CPPUNIT_ASSERT(stencil.intersects()); + } +} + + +void +TestGradient::testOldStyleStencils() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(/*voxel size=*/0.5)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f,8.0f,10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + const Coord xyz(11, 17, 26); + + math::GradStencil gs(*grid); + gs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, gs.gradient().length(), /*tolerance=*/0.01); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, gs.normSqGrad(), /*tolerance=*/0.10); + + math::WenoStencil ws(*grid); + ws.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, ws.gradient().length(), /*tolerance=*/0.01); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, ws.normSqGrad(), /*tolerance=*/0.01); + + math::CurvatureStencil cs(*grid); + cs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, cs.gradient().length(), /*tolerance=*/0.01); +} diff --git a/openvdb/unittest/TestGrid.cc b/openvdb/unittest/TestGrid.cc new file mode 100644 index 00000000..608f7c8b --- /dev/null +++ b/openvdb/unittest/TestGrid.cc @@ -0,0 +1,523 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include // for std::make_unique + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +class TestGrid: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestGrid); + CPPUNIT_TEST(testGridRegistry); + CPPUNIT_TEST(testConstPtr); + CPPUNIT_TEST(testGetGrid); + CPPUNIT_TEST(testIsType); + CPPUNIT_TEST(testTransform); + CPPUNIT_TEST(testCopyGrid); + CPPUNIT_TEST(testValueConversion); + CPPUNIT_TEST(testClipping); + CPPUNIT_TEST(testApply); + CPPUNIT_TEST_SUITE_END(); + + void testGridRegistry(); + void testConstPtr(); + void testGetGrid(); + void testIsType(); + void testTransform(); + void testCopyGrid(); + void testValueConversion(); + void testClipping(); + void testApply(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGrid); + + +//////////////////////////////////////// + + +class ProxyTree: public openvdb::TreeBase +{ +public: + using ValueType = int; + using BuildType = int; + using LeafNodeType = void; + using ValueAllCIter = void; + using ValueAllIter = void; + using ValueOffCIter = void; + using ValueOffIter = void; + using ValueOnCIter = void; + using ValueOnIter = void; + using TreeBasePtr = openvdb::TreeBase::Ptr; + using Ptr = openvdb::SharedPtr; + using ConstPtr = openvdb::SharedPtr; + + static const openvdb::Index DEPTH; + static const ValueType backg; + + ProxyTree() {} + ProxyTree(const ValueType&) {} + ProxyTree(const ProxyTree&) = default; + ~ProxyTree() override = default; + + static const openvdb::Name& treeType() { static const openvdb::Name s("proxy"); return s; } + const openvdb::Name& type() const override { return treeType(); } + openvdb::Name valueType() const override { return "proxy"; } + const ValueType& background() const { return backg; } + + TreeBasePtr copy() const override { return TreeBasePtr(new ProxyTree(*this)); } + + void readTopology(std::istream& is, bool = false) override { is.seekg(0, std::ios::beg); } + void writeTopology(std::ostream& os, bool = false) const override { os.seekp(0); } + + void readBuffers(std::istream& is, + const openvdb::CoordBBox&, bool /*saveFloatAsHalf*/=false) override { is.seekg(0); } + void readNonresidentBuffers() const override {} + void readBuffers(std::istream& is, bool /*saveFloatAsHalf*/=false) override { is.seekg(0); } + void writeBuffers(std::ostream& os, bool /*saveFloatAsHalf*/=false) const override + { os.seekp(0, std::ios::beg); } + + bool empty() const { return true; } + void clear() {} + void prune(const ValueType& = 0) {} + void clip(const openvdb::CoordBBox&) {} + void clipUnallocatedNodes() override {} +#if OPENVDB_ABI_VERSION_NUMBER >= 4 + openvdb::Index32 unallocatedLeafCount() const override { return 0; } +#endif + + void getIndexRange(openvdb::CoordBBox&) const override {} + bool evalLeafBoundingBox(openvdb::CoordBBox& bbox) const override + { bbox.min() = bbox.max() = openvdb::Coord(0, 0, 0); return false; } + bool evalActiveVoxelBoundingBox(openvdb::CoordBBox& bbox) const override + { bbox.min() = bbox.max() = openvdb::Coord(0, 0, 0); return false; } + bool evalActiveVoxelDim(openvdb::Coord& dim) const override + { dim = openvdb::Coord(0, 0, 0); return false; } + bool evalLeafDim(openvdb::Coord& dim) const override + { dim = openvdb::Coord(0, 0, 0); return false; } + + openvdb::Index treeDepth() const override { return 0; } + openvdb::Index leafCount() const override { return 0; } +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + std::vector nodeCount() const override + { return std::vector(DEPTH, 0); } +#endif + openvdb::Index nonLeafCount() const override { return 0; } + openvdb::Index64 activeVoxelCount() const override { return 0UL; } + openvdb::Index64 inactiveVoxelCount() const override { return 0UL; } + openvdb::Index64 activeLeafVoxelCount() const override { return 0UL; } + openvdb::Index64 inactiveLeafVoxelCount() const override { return 0UL; } + openvdb::Index64 activeTileCount() const override { return 0UL; } +}; + +const openvdb::Index ProxyTree::DEPTH = 0; +const ProxyTree::ValueType ProxyTree::backg = 0; + +using ProxyGrid = openvdb::Grid; + + +//////////////////////////////////////// + +void +TestGrid::testGridRegistry() +{ + using namespace openvdb::tree; + + using TreeType = Tree, 2> > >; + using GridType = openvdb::Grid; + + openvdb::GridBase::clearRegistry(); + + CPPUNIT_ASSERT(!GridType::isRegistered()); + GridType::registerGrid(); + CPPUNIT_ASSERT(GridType::isRegistered()); + CPPUNIT_ASSERT_THROW(GridType::registerGrid(), openvdb::KeyError); + GridType::unregisterGrid(); + CPPUNIT_ASSERT(!GridType::isRegistered()); + CPPUNIT_ASSERT_NO_THROW(GridType::unregisterGrid()); + CPPUNIT_ASSERT(!GridType::isRegistered()); + CPPUNIT_ASSERT_NO_THROW(GridType::registerGrid()); + CPPUNIT_ASSERT(GridType::isRegistered()); + + openvdb::GridBase::clearRegistry(); +} + + +void +TestGrid::testConstPtr() +{ + using namespace openvdb; + + GridBase::ConstPtr constgrid = ProxyGrid::create(); + + CPPUNIT_ASSERT_EQUAL(Name("proxy"), constgrid->type()); +} + + +void +TestGrid::testGetGrid() +{ + using namespace openvdb; + + GridBase::Ptr grid = FloatGrid::create(/*bg=*/0.0); + GridBase::ConstPtr constGrid = grid; + + CPPUNIT_ASSERT(grid->baseTreePtr()); + + CPPUNIT_ASSERT(!gridPtrCast(grid)); + CPPUNIT_ASSERT(!gridPtrCast(grid)); + + CPPUNIT_ASSERT(gridConstPtrCast(constGrid)); + CPPUNIT_ASSERT(!gridConstPtrCast(constGrid)); +} + + +void +TestGrid::testIsType() +{ + using namespace openvdb; + + GridBase::Ptr grid = FloatGrid::create(); + CPPUNIT_ASSERT(grid->isType()); + CPPUNIT_ASSERT(!grid->isType()); +} + + +void +TestGrid::testTransform() +{ + ProxyGrid grid; + + // Verify that the grid has a valid default transform. + CPPUNIT_ASSERT(grid.transformPtr()); + + // Verify that a null transform pointer is not allowed. + CPPUNIT_ASSERT_THROW(grid.setTransform(openvdb::math::Transform::Ptr()), + openvdb::ValueError); + + grid.setTransform(openvdb::math::Transform::createLinearTransform()); + + CPPUNIT_ASSERT(grid.transformPtr()); + + // Verify that calling Transform-related Grid methods (Grid::voxelSize(), etc.) + // is the same as calling those methods on the Transform. + + CPPUNIT_ASSERT(grid.transform().voxelSize().eq(grid.voxelSize())); + CPPUNIT_ASSERT(grid.transform().voxelSize(openvdb::Vec3d(0.1, 0.2, 0.3)).eq( + grid.voxelSize(openvdb::Vec3d(0.1, 0.2, 0.3)))); + + CPPUNIT_ASSERT(grid.transform().indexToWorld(openvdb::Vec3d(0.1, 0.2, 0.3)).eq( + grid.indexToWorld(openvdb::Vec3d(0.1, 0.2, 0.3)))); + CPPUNIT_ASSERT(grid.transform().indexToWorld(openvdb::Coord(1, 2, 3)).eq( + grid.indexToWorld(openvdb::Coord(1, 2, 3)))); + CPPUNIT_ASSERT(grid.transform().worldToIndex(openvdb::Vec3d(0.1, 0.2, 0.3)).eq( + grid.worldToIndex(openvdb::Vec3d(0.1, 0.2, 0.3)))); +} + + +void +TestGrid::testCopyGrid() +{ + using namespace openvdb; + + // set up a grid + const float fillValue1=5.0f; + FloatGrid::Ptr grid1 = createGrid(/*bg=*/fillValue1); + FloatTree& tree1 = grid1->tree(); + tree1.setValue(Coord(-10,40,845), 3.456f); + tree1.setValue(Coord(1,-50,-8), 1.0f); + + // create a new grid, copying the first grid + GridBase::Ptr grid2 = grid1->deepCopy(); + + // cast down to the concrete type to query values + FloatTree& tree2 = gridPtrCast(grid2)->tree(); + + // compare topology + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + // trees should be equal + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue1, tree2.getValue(Coord(1,2,3))); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.456f, tree2.getValue(Coord(-10,40,845))); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0f, tree2.getValue(Coord(1,-50,-8))); + + // change 1 value in tree2 + Coord changeCoord(1, -500, -8); + tree2.setValue(changeCoord, 1.0f); + + // topology should no longer match + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + // query changed value and make sure it's different between trees + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue1, tree1.getValue(changeCoord)); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0f, tree2.getValue(changeCoord)); + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + // shallow-copy a const grid but supply a new transform and meta map + CPPUNIT_ASSERT_EQUAL(1.0, grid1->transform().voxelSize().x()); + CPPUNIT_ASSERT_EQUAL(size_t(0), grid1->metaCount()); + CPPUNIT_ASSERT_EQUAL(Index(2), grid1->tree().leafCount()); + + math::Transform::Ptr xform(math::Transform::createLinearTransform(/*voxelSize=*/0.25)); + MetaMap meta; + meta.insertMeta("test", Int32Metadata(4)); + + FloatGrid::ConstPtr constGrid1 = ConstPtrCast(grid1); + + GridBase::ConstPtr grid3 = constGrid1->copyGridReplacingMetadataAndTransform(meta, xform); + const FloatTree& tree3 = gridConstPtrCast(grid3)->tree(); + + CPPUNIT_ASSERT_EQUAL(0.25, grid3->transform().voxelSize().x()); + CPPUNIT_ASSERT_EQUAL(size_t(1), grid3->metaCount()); + CPPUNIT_ASSERT_EQUAL(Index(2), tree3.leafCount()); + CPPUNIT_ASSERT_EQUAL(long(3), constGrid1->constTreePtr().use_count()); +#endif +} + + +void +TestGrid::testValueConversion() +{ + using namespace openvdb; + + const Coord c0(-10, 40, 845), c1(1, -50, -8), c2(1, 2, 3); + const float fval0 = 3.25f, fval1 = 1.0f, fbkgd = 5.0f; + + // Create a FloatGrid. + FloatGrid fgrid(fbkgd); + FloatTree& ftree = fgrid.tree(); + ftree.setValue(c0, fval0); + ftree.setValue(c1, fval1); + + // Copy the FloatGrid to a DoubleGrid. + DoubleGrid dgrid(fgrid); + DoubleTree& dtree = dgrid.tree(); + // Compare topology. + CPPUNIT_ASSERT(dtree.hasSameTopology(ftree)); + CPPUNIT_ASSERT(ftree.hasSameTopology(dtree)); + // Compare values. + ASSERT_DOUBLES_EXACTLY_EQUAL(double(fbkgd), dtree.getValue(c2)); + ASSERT_DOUBLES_EXACTLY_EQUAL(double(fval0), dtree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(double(fval1), dtree.getValue(c1)); + + // Copy the FloatGrid to a BoolGrid. + BoolGrid bgrid(fgrid); + BoolTree& btree = bgrid.tree(); + // Compare topology. + CPPUNIT_ASSERT(btree.hasSameTopology(ftree)); + CPPUNIT_ASSERT(ftree.hasSameTopology(btree)); + // Compare values. + CPPUNIT_ASSERT_EQUAL(bool(fbkgd), btree.getValue(c2)); + CPPUNIT_ASSERT_EQUAL(bool(fval0), btree.getValue(c0)); + CPPUNIT_ASSERT_EQUAL(bool(fval1), btree.getValue(c1)); + + // Copy the FloatGrid to a Vec3SGrid. + Vec3SGrid vgrid(fgrid); + Vec3STree& vtree = vgrid.tree(); + // Compare topology. + CPPUNIT_ASSERT(vtree.hasSameTopology(ftree)); + CPPUNIT_ASSERT(ftree.hasSameTopology(vtree)); + // Compare values. + CPPUNIT_ASSERT_EQUAL(Vec3s(fbkgd), vtree.getValue(c2)); + CPPUNIT_ASSERT_EQUAL(Vec3s(fval0), vtree.getValue(c0)); + CPPUNIT_ASSERT_EQUAL(Vec3s(fval1), vtree.getValue(c1)); + + // Verify that a Vec3SGrid can't be copied to an Int32Grid + // (because an Int32 can't be constructed from a Vec3S). + CPPUNIT_ASSERT_THROW(Int32Grid igrid2(vgrid), openvdb::TypeError); + + // Verify that a grid can't be converted to another type with a different + // tree configuration. + using DTree23 = tree::Tree3::Type; + using DGrid23 = Grid; + CPPUNIT_ASSERT_THROW(DGrid23 d23grid(fgrid), openvdb::TypeError); +} + + +//////////////////////////////////////// + + +template +void +validateClippedGrid(const GridT& clipped, const typename GridT::ValueType& fg) +{ + using namespace openvdb; + + using ValueT = typename GridT::ValueType; + + const CoordBBox bbox = clipped.evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT_EQUAL(4, bbox.min().x()); + CPPUNIT_ASSERT_EQUAL(4, bbox.min().y()); + CPPUNIT_ASSERT_EQUAL(-6, bbox.min().z()); + CPPUNIT_ASSERT_EQUAL(4, bbox.max().x()); + CPPUNIT_ASSERT_EQUAL(4, bbox.max().y()); + CPPUNIT_ASSERT_EQUAL(6, bbox.max().z()); + CPPUNIT_ASSERT_EQUAL(6 + 6 + 1, int(clipped.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(2, int(clipped.constTree().leafCount())); + + typename GridT::ConstAccessor acc = clipped.getConstAccessor(); + const ValueT bg = clipped.background(); + Coord xyz; + int &x = xyz[0], &y = xyz[1], &z = xyz[2]; + for (x = -10; x <= 10; ++x) { + for (y = -10; y <= 10; ++y) { + for (z = -10; z <= 10; ++z) { + if (x == 4 && y == 4 && z >= -6 && z <= 6) { + CPPUNIT_ASSERT_EQUAL(fg, acc.getValue(Coord(4, 4, z))); + } else { + CPPUNIT_ASSERT_EQUAL(bg, acc.getValue(Coord(x, y, z))); + } + } + } + } +} + + +// See also TestTools::testClipping() +void +TestGrid::testClipping() +{ + using namespace openvdb; + + const BBoxd clipBox(Vec3d(4.0, 4.0, -6.0), Vec3d(4.9, 4.9, 6.0)); + + { + const float fg = 5.f; + FloatGrid cube(0.f); + cube.fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/fg, /*active=*/true); + cube.clipGrid(clipBox); + validateClippedGrid(cube, fg); + } + { + const bool fg = true; + BoolGrid cube(false); + cube.fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/fg, /*active=*/true); + cube.clipGrid(clipBox); + validateClippedGrid(cube, fg); + } + { + const Vec3s fg(1.f, -2.f, 3.f); + Vec3SGrid cube(Vec3s(0.f)); + cube.fill(CoordBBox(Coord(-10), Coord(10)), /*value=*/fg, /*active=*/true); + cube.clipGrid(clipBox); + validateClippedGrid(cube, fg); + } + /* + {// Benchmark multi-threaded copy construction + openvdb::util::CpuTimer timer; + openvdb::initialize(); + openvdb::io::File file("/usr/pic1/Data/OpenVDB/LevelSetModels/crawler.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("ls_crawler"); + file.close(); + openvdb::FloatGrid::Ptr grid = openvdb::gridPtrCast(baseGrid); + //grid->tree().print(); + timer.start("\nCopy construction"); + openvdb::FloatTree fTree(grid->tree()); + timer.stop(); + + timer.start("\nBoolean topology copy construction"); + openvdb::BoolTree bTree(grid->tree(), false, openvdb::TopologyCopy()); + timer.stop(); + + timer.start("\nBoolean topology union"); + bTree.topologyUnion(fTree); + timer.stop(); + //bTree.print(); + } + */ +} + + +//////////////////////////////////////// + + +namespace { + +struct GridOp +{ + bool isConst = false; + template void operator()(const GridT&) { isConst = true; } + template void operator()(GridT&) { isConst = false; } +}; + +} // anonymous namespace + + +void +TestGrid::testApply() +{ + using namespace openvdb; + + const GridBase::Ptr + boolGrid = BoolGrid::create(), + floatGrid = FloatGrid::create(), + doubleGrid = DoubleGrid::create(), + intGrid = Int32Grid::create(); + + const GridBase::ConstPtr + boolCGrid = BoolGrid::create(), + floatCGrid = FloatGrid::create(), + doubleCGrid = DoubleGrid::create(), + intCGrid = Int32Grid::create(); + + { + using AllowedGridTypes = TypeList<>; + + // Verify that the functor is not applied to any of the grids. + GridOp op; + CPPUNIT_ASSERT(!boolGrid->apply(op)); + CPPUNIT_ASSERT(!boolCGrid->apply(op)); + CPPUNIT_ASSERT(!floatGrid->apply(op)); + CPPUNIT_ASSERT(!floatCGrid->apply(op)); + CPPUNIT_ASSERT(!doubleGrid->apply(op)); + CPPUNIT_ASSERT(!doubleCGrid->apply(op)); + CPPUNIT_ASSERT(!intGrid->apply(op)); + CPPUNIT_ASSERT(!intCGrid->apply(op)); + } + { + using AllowedGridTypes = TypeList; + + // Verify that the functor is applied only to grids of the allowed types + // and that their constness is respected. + GridOp op; + CPPUNIT_ASSERT(!boolGrid->apply(op)); + CPPUNIT_ASSERT(!intGrid->apply(op)); + CPPUNIT_ASSERT(floatGrid->apply(op)); CPPUNIT_ASSERT(!op.isConst); + CPPUNIT_ASSERT(doubleGrid->apply(op)); CPPUNIT_ASSERT(!op.isConst); + + CPPUNIT_ASSERT(!boolCGrid->apply(op)); + CPPUNIT_ASSERT(!intCGrid->apply(op)); + CPPUNIT_ASSERT(floatCGrid->apply(op)); CPPUNIT_ASSERT(op.isConst); + CPPUNIT_ASSERT(doubleCGrid->apply(op)); CPPUNIT_ASSERT(op.isConst); + } + { + using AllowedGridTypes = TypeList; + + // Verify that rvalue functors are supported. + int n = 0; + CPPUNIT_ASSERT( !boolGrid->apply([&n](GridBase&) { ++n; })); + CPPUNIT_ASSERT( !intGrid->apply([&n](GridBase&) { ++n; })); + CPPUNIT_ASSERT( floatGrid->apply([&n](GridBase&) { ++n; })); + CPPUNIT_ASSERT( doubleGrid->apply([&n](GridBase&) { ++n; })); + CPPUNIT_ASSERT( !boolCGrid->apply([&n](const GridBase&) { ++n; })); + CPPUNIT_ASSERT( !intCGrid->apply([&n](const GridBase&) { ++n; })); + CPPUNIT_ASSERT( floatCGrid->apply([&n](const GridBase&) { ++n; })); + CPPUNIT_ASSERT(doubleCGrid->apply([&n](const GridBase&) { ++n; })); + CPPUNIT_ASSERT_EQUAL(4, n); + } +} diff --git a/openvdb/unittest/TestGridBbox.cc b/openvdb/unittest/TestGridBbox.cc new file mode 100644 index 00000000..e1f67e21 --- /dev/null +++ b/openvdb/unittest/TestGridBbox.cc @@ -0,0 +1,83 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include +#include +#include +#include + + +class TestGridBbox: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestGridBbox); + CPPUNIT_TEST(testLeafBbox); + CPPUNIT_TEST(testGridBbox); + CPPUNIT_TEST_SUITE_END(); + + void testLeafBbox(); + void testGridBbox(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGridBbox); + + +//////////////////////////////////////// + + +void +TestGridBbox::testLeafBbox() +{ + openvdb::FloatTree tree(/*fillValue=*/256.0f); + + openvdb::CoordBBox bbox; + CPPUNIT_ASSERT(!tree.evalLeafBoundingBox(bbox)); + + // Add values to buffer zero. + tree.setValue(openvdb::Coord( 0, 9, 9), 2.0); + tree.setValue(openvdb::Coord(100, 35, 800), 2.5); + + // Coordinates in CoordBBox are inclusive! + CPPUNIT_ASSERT(tree.evalLeafBoundingBox(bbox)); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 8, 8), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(104-1, 40-1, 808-1), bbox.max()); + + // Test negative coordinates. + tree.setValue(openvdb::Coord(-100, -35, -800), 2.5); + + CPPUNIT_ASSERT(tree.evalLeafBoundingBox(bbox)); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-104, -40, -800), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(104-1, 40-1, 808-1), bbox.max()); +} + + +void +TestGridBbox::testGridBbox() +{ + openvdb::FloatTree tree(/*fillValue=*/256.0f); + + openvdb::CoordBBox bbox; + CPPUNIT_ASSERT(!tree.evalActiveVoxelBoundingBox(bbox)); + + // Add values to buffer zero. + tree.setValue(openvdb::Coord( 1, 0, 0), 1.5); + tree.setValue(openvdb::Coord( 0, 12, 8), 2.0); + tree.setValue(openvdb::Coord( 1, 35, 800), 2.5); + tree.setValue(openvdb::Coord(100, 0, 16), 3.0); + tree.setValue(openvdb::Coord( 1, 0, 16), 3.5); + + // Coordinates in CoordBBox are inclusive! + CPPUNIT_ASSERT(tree.evalActiveVoxelBoundingBox(bbox)); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord( 0, 0, 0), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(100, 35, 800), bbox.max()); + + // Test negative coordinates. + tree.setValue(openvdb::Coord(-100, -35, -800), 2.5); + + CPPUNIT_ASSERT(tree.evalActiveVoxelBoundingBox(bbox)); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-100, -35, -800), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(100, 35, 800), bbox.max()); +} diff --git a/openvdb/unittest/TestGridDescriptor.cc b/openvdb/unittest/TestGridDescriptor.cc new file mode 100644 index 00000000..a5c0df79 --- /dev/null +++ b/openvdb/unittest/TestGridDescriptor.cc @@ -0,0 +1,159 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + + +class TestGridDescriptor: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestGridDescriptor); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testCopy); + CPPUNIT_TEST(testName); + CPPUNIT_TEST_SUITE_END(); + + void testIO(); + void testCopy(); + void testName(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGridDescriptor); + + +void +TestGridDescriptor::testIO() +{ + using namespace openvdb::io; + using namespace openvdb; + + typedef FloatGrid GridType; + + GridDescriptor gd(GridDescriptor::addSuffix("temperature", 2), GridType::gridType()); + gd.setInstanceParentName("temperature_32bit"); + + gd.setGridPos(123); + gd.setBlockPos(234); + gd.setEndPos(567); + + // write out the gd. + std::ostringstream ostr(std::ios_base::binary); + + gd.writeHeader(ostr); + gd.writeStreamPos(ostr); + + // Read in the gd. + std::istringstream istr(ostr.str(), std::ios_base::binary); + + // Since the input is only a fragment of a VDB file (in particular, + // it doesn't have a header), set the file format version number explicitly. + io::setCurrentVersion(istr); + + GridDescriptor gd2; + + CPPUNIT_ASSERT_THROW(gd2.read(istr), openvdb::LookupError); + + // Register the grid. + GridBase::clearRegistry(); + GridType::registerGrid(); + + // seek back and read again. + istr.seekg(0, std::ios_base::beg); + GridBase::Ptr grid; + CPPUNIT_ASSERT_NO_THROW(grid = gd2.read(istr)); + + CPPUNIT_ASSERT_EQUAL(gd.gridName(), gd2.gridName()); + CPPUNIT_ASSERT_EQUAL(gd.uniqueName(), gd2.uniqueName()); + CPPUNIT_ASSERT_EQUAL(gd.gridType(), gd2.gridType()); + CPPUNIT_ASSERT_EQUAL(gd.instanceParentName(), gd2.instanceParentName()); + CPPUNIT_ASSERT(grid.get() != NULL); + CPPUNIT_ASSERT_EQUAL(GridType::gridType(), grid->type()); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), gd2.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), gd2.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), gd2.getEndPos()); + + // Clear the registry when we are done. + GridBase::clearRegistry(); +} + + +void +TestGridDescriptor::testCopy() +{ + using namespace openvdb::io; + using namespace openvdb; + + typedef FloatGrid GridType; + + GridDescriptor gd("temperature", GridType::gridType()); + gd.setInstanceParentName("temperature_32bit"); + + gd.setGridPos(123); + gd.setBlockPos(234); + gd.setEndPos(567); + + GridDescriptor gd2; + + // do the copy + gd2 = gd; + + CPPUNIT_ASSERT_EQUAL(gd.gridName(), gd2.gridName()); + CPPUNIT_ASSERT_EQUAL(gd.uniqueName(), gd2.uniqueName()); + CPPUNIT_ASSERT_EQUAL(gd.gridType(), gd2.gridType()); + CPPUNIT_ASSERT_EQUAL(gd.instanceParentName(), gd2.instanceParentName()); + CPPUNIT_ASSERT_EQUAL(gd.getGridPos(), gd2.getGridPos()); + CPPUNIT_ASSERT_EQUAL(gd.getBlockPos(), gd2.getBlockPos()); + CPPUNIT_ASSERT_EQUAL(gd.getEndPos(), gd2.getEndPos()); +} + + +void +TestGridDescriptor::testName() +{ + using openvdb::Name; + using openvdb::io::GridDescriptor; + + const std::string typ = openvdb::FloatGrid::gridType(); + + Name name("test"); + GridDescriptor gd(name, typ); + + // Verify that the grid name and the unique name are equivalent + // when the unique name has no suffix. + CPPUNIT_ASSERT_EQUAL(name, gd.gridName()); + CPPUNIT_ASSERT_EQUAL(name, gd.uniqueName()); + CPPUNIT_ASSERT_EQUAL(name, GridDescriptor::nameAsString(name)); + CPPUNIT_ASSERT_EQUAL(name, GridDescriptor::stripSuffix(name)); + + // Add a suffix. + name = GridDescriptor::addSuffix("test", 2); + gd = GridDescriptor(name, typ); + + // Verify that the grid name and the unique name differ + // when the unique name has a suffix. + CPPUNIT_ASSERT_EQUAL(name, gd.uniqueName()); + CPPUNIT_ASSERT(gd.gridName() != gd.uniqueName()); + CPPUNIT_ASSERT_EQUAL(GridDescriptor::stripSuffix(name), gd.gridName()); + CPPUNIT_ASSERT_EQUAL(Name("test[2]"), GridDescriptor::nameAsString(name)); + + // As above, but with a longer suffix + name = GridDescriptor::addSuffix("test", 13); + gd = GridDescriptor(name, typ); + + CPPUNIT_ASSERT_EQUAL(name, gd.uniqueName()); + CPPUNIT_ASSERT(gd.gridName() != gd.uniqueName()); + CPPUNIT_ASSERT_EQUAL(GridDescriptor::stripSuffix(name), gd.gridName()); + CPPUNIT_ASSERT_EQUAL(Name("test[13]"), GridDescriptor::nameAsString(name)); + + // Multiple suffixes aren't supported, but verify that + // they behave reasonably, at least. + name = GridDescriptor::addSuffix(name, 4); + gd = GridDescriptor(name, typ); + + CPPUNIT_ASSERT_EQUAL(name, gd.uniqueName()); + CPPUNIT_ASSERT(gd.gridName() != gd.uniqueName()); + CPPUNIT_ASSERT_EQUAL(GridDescriptor::stripSuffix(name), gd.gridName()); +} diff --git a/openvdb/unittest/TestGridIO.cc b/openvdb/unittest/TestGridIO.cc new file mode 100644 index 00000000..5384deaa --- /dev/null +++ b/openvdb/unittest/TestGridIO.cc @@ -0,0 +1,205 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include // for remove() + + +class TestGridIO: public CppUnit::TestCase +{ +public: + typedef openvdb::tree::Tree< + openvdb::tree::RootNode< + openvdb::tree::InternalNode< + openvdb::tree::InternalNode< + openvdb::tree::InternalNode< + openvdb::tree::LeafNode, 3>, 4>, 5> > > + Float5432Tree; + typedef openvdb::Grid Float5432Grid; + + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestGridIO); + CPPUNIT_TEST(testReadAllBool); + CPPUNIT_TEST(testReadAllMask); + CPPUNIT_TEST(testReadAllFloat); + CPPUNIT_TEST(testReadAllVec3S); + CPPUNIT_TEST(testReadAllFloat5432); + CPPUNIT_TEST_SUITE_END(); + + void testReadAllBool() { readAllTest(); } + void testReadAllMask() { readAllTest(); } + void testReadAllFloat() { readAllTest(); } + void testReadAllVec3S() { readAllTest(); } + void testReadAllFloat5432() { Float5432Grid::registerGrid(); readAllTest(); } +private: + template void readAllTest(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGridIO); + + +//////////////////////////////////////// + + +template +void +TestGridIO::readAllTest() +{ + using namespace openvdb; + + typedef typename GridType::TreeType TreeType; + typedef typename TreeType::Ptr TreePtr; + typedef typename TreeType::ValueType ValueT; + typedef typename TreeType::NodeCIter NodeCIter; + const ValueT zero = zeroVal(); + + // For each level of the tree, compute a bit mask for use in converting + // global coordinates to node origins for nodes at that level. + // That is, node_origin = global_coordinates & mask[node_level]. + std::vector mask; + TreeType::getNodeLog2Dims(mask); + const size_t height = mask.size(); + for (size_t i = 0; i < height; ++i) { + Index dim = 0; + for (size_t j = i; j < height; ++j) dim += mask[j]; + mask[i] = ~((1 << dim) - 1); + } + const Index childDim = 1 + ~(mask[0]); + + // Choose sample coordinate pairs (coord0, coord1) and (coord0, coord2) + // that are guaranteed to lie in different children of the root node + // (because they are separated by more than the child node dimension). + const Coord + coord0(0, 0, 0), + coord1(int(1.1 * childDim), 0, 0), + coord2(0, int(1.1 * childDim), 0); + + // Create trees. + TreePtr + tree1(new TreeType(zero + 1)), + tree2(new TreeType(zero + 2)); + + // Set some values. + tree1->setValue(coord0, zero + 5); + tree1->setValue(coord1, zero + 6); + tree2->setValue(coord0, zero + 10); + tree2->setValue(coord2, zero + 11); + + // Create grids with trees and assign transforms. + math::Transform::Ptr trans1(math::Transform::createLinearTransform(0.1)), + trans2(math::Transform::createLinearTransform(0.1)); + GridBase::Ptr grid1 = createGrid(tree1), grid2 = createGrid(tree2); + grid1->setTransform(trans1); + grid1->setName("density"); + grid2->setTransform(trans2); + grid2->setName("temperature"); + + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 5), tree1->getValue(coord0)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 6), tree1->getValue(coord1)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 10), tree2->getValue(coord0)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 11), tree2->getValue(coord2)); + OPENVDB_NO_FP_EQUALITY_WARNING_END + + // count[d] is the number of nodes already visited at depth d. + // There should be exactly two nodes at each depth (apart from the root). + std::vector count(height, 0); + + // Verify that tree1 has correct node origins. + for (NodeCIter iter = tree1->cbeginNode(); iter; ++iter) { + const Index depth = iter.getDepth(); + const Coord expected[2] = { + coord0 & mask[depth], // origin of the first node at this depth + coord1 & mask[depth] // origin of the second node at this depth + }; + CPPUNIT_ASSERT_EQUAL(expected[count[depth]], iter.getCoord()); + ++count[depth]; + } + // Verify that tree2 has correct node origins. + count.assign(height, 0); // reset node counts + for (NodeCIter iter = tree2->cbeginNode(); iter; ++iter) { + const Index depth = iter.getDepth(); + const Coord expected[2] = { coord0 & mask[depth], coord2 & mask[depth] }; + CPPUNIT_ASSERT_EQUAL(expected[count[depth]], iter.getCoord()); + ++count[depth]; + } + + MetaMap::Ptr meta(new MetaMap); + meta->insertMeta("author", StringMetadata("Einstein")); + meta->insertMeta("year", Int32Metadata(2009)); + + GridPtrVecPtr grids(new GridPtrVec); + grids->push_back(grid1); + grids->push_back(grid2); + + // Write grids and metadata out to a file. + { + io::File vdbfile("something.vdb2"); + vdbfile.write(*grids, *meta); + } + meta.reset(); + grids.reset(); + + io::File vdbfile("something.vdb2"); + CPPUNIT_ASSERT_THROW(vdbfile.getGrids(), openvdb::IoError); // file has not been opened + + // Read the grids back in. + vdbfile.open(); + CPPUNIT_ASSERT(vdbfile.isOpen()); + + grids = vdbfile.getGrids(); + meta = vdbfile.getMetadata(); + + // Ensure we have the metadata. + CPPUNIT_ASSERT(meta.get() != NULL); + CPPUNIT_ASSERT_EQUAL(2, int(meta->metaCount())); + CPPUNIT_ASSERT_EQUAL(std::string("Einstein"), meta->metaValue("author")); + CPPUNIT_ASSERT_EQUAL(2009, meta->metaValue("year")); + + // Ensure we got both grids. + CPPUNIT_ASSERT(grids.get() != NULL); + CPPUNIT_ASSERT_EQUAL(2, int(grids->size())); + + grid1.reset(); + grid1 = findGridByName(*grids, "density"); + CPPUNIT_ASSERT(grid1.get() != NULL); + TreePtr density = gridPtrCast(grid1)->treePtr(); + CPPUNIT_ASSERT(density.get() != NULL); + + grid2.reset(); + grid2 = findGridByName(*grids, "temperature"); + CPPUNIT_ASSERT(grid2.get() != NULL); + TreePtr temperature = gridPtrCast(grid2)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != NULL); + + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 5), density->getValue(coord0)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 6), density->getValue(coord1)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 10), temperature->getValue(coord0)); + CPPUNIT_ASSERT_EQUAL(ValueT(zero + 11), temperature->getValue(coord2)); + OPENVDB_NO_FP_EQUALITY_WARNING_END + + // Check if we got the correct node origins. + count.assign(height, 0); + for (NodeCIter iter = density->cbeginNode(); iter; ++iter) { + const Index depth = iter.getDepth(); + const Coord expected[2] = { coord0 & mask[depth], coord1 & mask[depth] }; + CPPUNIT_ASSERT_EQUAL(expected[count[depth]], iter.getCoord()); + ++count[depth]; + } + count.assign(height, 0); + for (NodeCIter iter = temperature->cbeginNode(); iter; ++iter) { + const Index depth = iter.getDepth(); + const Coord expected[2] = { coord0 & mask[depth], coord2 & mask[depth] }; + CPPUNIT_ASSERT_EQUAL(expected[count[depth]], iter.getCoord()); + ++count[depth]; + } + + vdbfile.close(); + + ::remove("something.vdb2"); +} diff --git a/openvdb/unittest/TestGridTransformer.cc b/openvdb/unittest/TestGridTransformer.cc new file mode 100644 index 00000000..74685144 --- /dev/null +++ b/openvdb/unittest/TestGridTransformer.cc @@ -0,0 +1,239 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +class TestGridTransformer: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestGridTransformer); + CPPUNIT_TEST(testTransformBoolPoint); + CPPUNIT_TEST(testTransformFloatPoint); + CPPUNIT_TEST(testTransformFloatBox); + CPPUNIT_TEST(testTransformFloatQuadratic); + CPPUNIT_TEST(testTransformDoubleBox); + CPPUNIT_TEST(testTransformInt32Box); + CPPUNIT_TEST(testTransformInt64Box); + CPPUNIT_TEST(testTransformVec3SPoint); + CPPUNIT_TEST(testTransformVec3DBox); + CPPUNIT_TEST(testResampleToMatch); + CPPUNIT_TEST_SUITE_END(); + + void testTransformBoolPoint() + { transformGrid(); } + void testTransformFloatPoint() + { transformGrid(); } + void testTransformFloatBox() + { transformGrid(); } + void testTransformFloatQuadratic() + { transformGrid(); } + void testTransformDoubleBox() + { transformGrid(); } + void testTransformInt32Box() + { transformGrid(); } + void testTransformInt64Box() + { transformGrid(); } + void testTransformVec3SPoint() + { transformGrid(); } + void testTransformVec3DBox() + { transformGrid(); } + + void testResampleToMatch(); + +private: + template void transformGrid(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestGridTransformer); + + +//////////////////////////////////////// + + +template +void +TestGridTransformer::transformGrid() +{ + using openvdb::Coord; + using openvdb::CoordBBox; + using openvdb::Vec3R; + + typedef typename GridType::ValueType ValueT; + + const int radius = Sampler::radius(); + const openvdb::Vec3R zeroVec(0, 0, 0), oneVec(1, 1, 1); + const ValueT + zero = openvdb::zeroVal(), + one = zero + 1, + two = one + 1, + background = one; + const bool transformTiles = true; + + // Create a sparse test grid comprising the eight corners of a 20 x 20 x 20 cube. + typename GridType::Ptr inGrid = GridType::create(background); + typename GridType::Accessor inAcc = inGrid->getAccessor(); + inAcc.setValue(Coord( 0, 0, 0), /*value=*/zero); + inAcc.setValue(Coord(20, 0, 0), zero); + inAcc.setValue(Coord( 0, 20, 0), zero); + inAcc.setValue(Coord( 0, 0, 20), zero); + inAcc.setValue(Coord(20, 0, 20), zero); + inAcc.setValue(Coord( 0, 20, 20), zero); + inAcc.setValue(Coord(20, 20, 0), zero); + inAcc.setValue(Coord(20, 20, 20), zero); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(8), inGrid->activeVoxelCount()); + + // For various combinations of scaling, rotation and translation... + for (int i = 0; i < 8; ++i) { + const openvdb::Vec3R + scale = i & 1 ? openvdb::Vec3R(10, 4, 7.5) : oneVec, + rotate = (i & 2 ? openvdb::Vec3R(30, 230, -190) : zeroVec) * (M_PI / 180), + translate = i & 4 ? openvdb::Vec3R(-5, 0, 10) : zeroVec, + pivot = i & 8 ? openvdb::Vec3R(0.5, 4, -3.3) : zeroVec; + openvdb::tools::GridTransformer transformer(pivot, scale, rotate, translate); + transformer.setTransformTiles(transformTiles); + + // Add a tile (either active or inactive) in the interior of the cube. + const bool tileIsActive = (i % 2); + inGrid->fill(CoordBBox(Coord(8), Coord(15)), two, tileIsActive); + if (tileIsActive) { + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(512 + 8), inGrid->activeVoxelCount()); + } else { + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(8), inGrid->activeVoxelCount()); + } + // Verify that a voxel outside the cube has the background value. + CPPUNIT_ASSERT(openvdb::math::isExactlyEqual(inAcc.getValue(Coord(21, 0, 0)), background)); + CPPUNIT_ASSERT_EQUAL(false, inAcc.isValueOn(Coord(21, 0, 0))); + // Verify that a voxel inside the cube has value two. + CPPUNIT_ASSERT(openvdb::math::isExactlyEqual(inAcc.getValue(Coord(12)), two)); + CPPUNIT_ASSERT_EQUAL(tileIsActive, inAcc.isValueOn(Coord(12))); + + // Verify that the bounding box of all active values is 20 x 20 x 20. + CoordBBox activeVoxelBBox = inGrid->evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT(!activeVoxelBBox.empty()); + const Coord imin = activeVoxelBBox.min(), imax = activeVoxelBBox.max(); + CPPUNIT_ASSERT_EQUAL(Coord(0), imin); + CPPUNIT_ASSERT_EQUAL(Coord(20), imax); + + // Transform the corners of the input grid's bounding box + // and compute the enclosing bounding box in the output grid. + const openvdb::Mat4R xform = transformer.getTransform(); + const Vec3R + inRMin(imin.x(), imin.y(), imin.z()), + inRMax(imax.x(), imax.y(), imax.z()); + Vec3R outRMin, outRMax; + outRMin = outRMax = inRMin * xform; + for (int j = 0; j < 8; ++j) { + Vec3R corner( + j & 1 ? inRMax.x() : inRMin.x(), + j & 2 ? inRMax.y() : inRMin.y(), + j & 4 ? inRMax.z() : inRMin.z()); + outRMin = openvdb::math::minComponent(outRMin, corner * xform); + outRMax = openvdb::math::maxComponent(outRMax, corner * xform); + } + + CoordBBox bbox( + Coord(openvdb::tools::local_util::floorVec3(outRMin) - radius), + Coord(openvdb::tools::local_util::ceilVec3(outRMax) + radius)); + + // Transform the test grid. + typename GridType::Ptr outGrid = GridType::create(background); + transformer.transformGrid(*inGrid, *outGrid); + openvdb::tools::prune(outGrid->tree()); + + // Verify that the bounding box of the transformed grid + // matches the transformed bounding box of the original grid. + + activeVoxelBBox = outGrid->evalActiveVoxelBoundingBox(); + CPPUNIT_ASSERT(!activeVoxelBBox.empty()); + const openvdb::Vec3i + omin = activeVoxelBBox.min().asVec3i(), + omax = activeVoxelBBox.max().asVec3i(); + const int bboxTolerance = 1; // allow for rounding +#if 0 + if (!omin.eq(bbox.min().asVec3i(), bboxTolerance) || + !omax.eq(bbox.max().asVec3i(), bboxTolerance)) + { + std::cerr << "\nS = " << scale << ", R = " << rotate + << ", T = " << translate << ", P = " << pivot << "\n" + << xform.transpose() << "\n" << "computed bbox = " << bbox + << "\nactual bbox = " << omin << " -> " << omax << "\n"; + } +#endif + CPPUNIT_ASSERT(omin.eq(bbox.min().asVec3i(), bboxTolerance)); + CPPUNIT_ASSERT(omax.eq(bbox.max().asVec3i(), bboxTolerance)); + + // Verify that (a voxel in) the interior of the cube was + // transformed correctly. + const Coord center = Coord::round(Vec3R(12) * xform); + const typename GridType::TreeType& outTree = outGrid->tree(); + CPPUNIT_ASSERT(openvdb::math::isExactlyEqual(transformTiles ? two : background, + outTree.getValue(center))); + if (transformTiles && tileIsActive) CPPUNIT_ASSERT(outTree.isValueOn(center)); + else CPPUNIT_ASSERT(!outTree.isValueOn(center)); + } +} + + +//////////////////////////////////////// + + +void +TestGridTransformer::testResampleToMatch() +{ + using namespace openvdb; + + // Create an input grid with an identity transform. + FloatGrid inGrid; + // Populate it with a 20 x 20 x 20 cube. + inGrid.fill(CoordBBox(Coord(5), Coord(24)), /*value=*/1.0); + CPPUNIT_ASSERT_EQUAL(8000, int(inGrid.activeVoxelCount())); + CPPUNIT_ASSERT(inGrid.tree().activeTileCount() > 0); + + {//test identity transform + FloatGrid outGrid; + CPPUNIT_ASSERT(outGrid.transform() == inGrid.transform()); + // Resample the input grid into the output grid using point sampling. + tools::resampleToMatch(inGrid, outGrid); + CPPUNIT_ASSERT_EQUAL(int(inGrid.activeVoxelCount()), int(outGrid.activeVoxelCount())); + for (openvdb::FloatTree::ValueOnCIter iter = inGrid.tree().cbeginValueOn(); iter; ++iter) { + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,outGrid.tree().getValue(iter.getCoord())); + } + // The output grid's transform should not have changed. + CPPUNIT_ASSERT(outGrid.transform() == inGrid.transform()); + } + + {//test nontrivial transform + // Create an output grid with a different transform. + math::Transform::Ptr xform = math::Transform::createLinearTransform(); + xform->preScale(Vec3d(0.5, 0.5, 1.0)); + FloatGrid outGrid; + outGrid.setTransform(xform); + CPPUNIT_ASSERT(outGrid.transform() != inGrid.transform()); + + // Resample the input grid into the output grid using point sampling. + tools::resampleToMatch(inGrid, outGrid); + + // The output grid's transform should not have changed. + CPPUNIT_ASSERT_EQUAL(*xform, outGrid.transform()); + + // The output grid should have double the resolution of the input grid + // in x and y and the same resolution in z. + CPPUNIT_ASSERT_EQUAL(32000, int(outGrid.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(Coord(40, 40, 20), outGrid.evalActiveVoxelDim()); + CPPUNIT_ASSERT_EQUAL(CoordBBox(Coord(9, 9, 5), Coord(48, 48, 24)), + outGrid.evalActiveVoxelBoundingBox()); + for (auto it = outGrid.tree().cbeginValueOn(); it; ++it) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, *it, 1.0e-6); + } + } +} diff --git a/openvdb/unittest/TestIndexFilter.cc b/openvdb/unittest/TestIndexFilter.cc new file mode 100644 index 00000000..951c4145 --- /dev/null +++ b/openvdb/unittest/TestIndexFilter.cc @@ -0,0 +1,1084 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestIndexFilter: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestIndexFilter); + CPPUNIT_TEST(testActiveFilter); + CPPUNIT_TEST(testMultiGroupFilter); + CPPUNIT_TEST(testRandomLeafFilter); + CPPUNIT_TEST(testAttributeHashFilter); + CPPUNIT_TEST(testLevelSetFilter); + CPPUNIT_TEST(testBBoxFilter); + CPPUNIT_TEST(testBinaryFilter); + CPPUNIT_TEST_SUITE_END(); + + void testActiveFilter(); + void testMultiGroupFilter(); + void testRandomLeafFilter(); + void testAttributeHashFilter(); + void testLevelSetFilter(); + void testBBoxFilter(); + void testBinaryFilter(); +}; // class TestIndexFilter + +CPPUNIT_TEST_SUITE_REGISTRATION(TestIndexFilter); + + +//////////////////////////////////////// + + +struct OriginLeaf +{ + OriginLeaf(const openvdb::Coord& _leafOrigin, const size_t _size = size_t(0)): + leafOrigin(_leafOrigin), size(_size) { } + openvdb::Coord origin() const { return leafOrigin; } + size_t pointCount() const { return size; } + const openvdb::Coord leafOrigin; + const size_t size; +}; + + +struct SimpleIter +{ + SimpleIter() : i(0) { } + int operator*() const { return i; } + void operator++() { i++; } + openvdb::Coord getCoord() const { return coord; } + int i; + openvdb::Coord coord; +}; + + +template +class ThresholdFilter +{ +public: + ThresholdFilter(const int threshold) + : mThreshold(threshold) { } + + bool isPositiveInteger() const { return mThreshold > 0; } + bool isMax() const { return mThreshold == std::numeric_limits::max(); } + + static bool initialized() { return true; } + inline index::State state() const + { + if (LessThan) { + if (isMax()) return index::ALL; + else if (!isPositiveInteger()) return index::NONE; + } + else { + if (isMax()) return index::NONE; + else if (!isPositiveInteger()) return index::ALL; + } + return index::PARTIAL; + } + + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT&) { } + + template + bool valid(const IterT& iter) const { + return LessThan ? *iter < mThreshold : *iter > mThreshold; + } + +private: + const int mThreshold; +}; // class ThresholdFilter + + +/// @brief Generates the signed distance to a sphere located at @a center +/// and with a specified @a radius (both in world coordinates). Only voxels +/// in the domain [0,0,0] -> @a dim are considered. Also note that the +/// level set is either dense, dense narrow-band or sparse narrow-band. +/// +/// @note This method is VERY SLOW and should only be used for debugging purposes! +/// However it works for any transform and even with open level sets. +/// A faster approch for closed narrow band generation is to only set voxels +/// sparsely and then use grid::signedFloodFill to define the sign +/// of the background values and tiles! This is implemented in openvdb/tools/LevelSetSphere.h +template +inline void +makeSphere(const openvdb::Coord& dim, const openvdb::Vec3f& center, float radius, GridType& grid) +{ + using ValueT = typename GridType::ValueType; + const ValueT zero = openvdb::zeroVal(); + + typename GridType::Accessor acc = grid.getAccessor(); + openvdb::Coord xyz; + for (xyz[0]=0; xyz[0] +bool +multiGroupMatches( const LeafT& leaf, const Index32 size, + const std::vector& include, const std::vector& exclude, + const std::vector& indices) +{ + using IndexGroupIter = IndexIter; + ValueVoxelCIter indexIter(0, size); + MultiGroupFilter filter(include, exclude, leaf.attributeSet()); + filter.reset(leaf); + IndexGroupIter iter(indexIter, filter); + for (unsigned i = 0; i < indices.size(); ++i, ++iter) { + if (!iter) return false; + if (*iter != Index32(indices[i])) return false; + } + return !iter; +} + + +void +TestIndexFilter::testActiveFilter() +{ + // create a point grid, three points are stored in two leafs + + PointDataGrid::Ptr points; + std::vector positions{{1, 1, 1}, {1, 2, 1}, {10.1f, 10, 1}}; + + const double voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + points = createPointDataGrid(positions, *transform); + + // check there are two leafs + + CPPUNIT_ASSERT_EQUAL(Index32(2), points->tree().leafCount()); + + ActiveFilter activeFilter; + InactiveFilter inActiveFilter; + + CPPUNIT_ASSERT_EQUAL(index::PARTIAL, activeFilter.state()); + CPPUNIT_ASSERT_EQUAL(index::PARTIAL, inActiveFilter.state()); + + { // test default active / inactive values + auto leafIter = points->tree().cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(index::PARTIAL, activeFilter.state(*leafIter)); + CPPUNIT_ASSERT_EQUAL(index::PARTIAL, inActiveFilter.state(*leafIter)); + + auto indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } + + auto firstLeaf = points->tree().beginLeaf(); + + { // set all voxels to be inactive in the first leaf + firstLeaf->getValueMask().set(false); + + auto leafIter = points->tree().cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(index::NONE, activeFilter.state(*leafIter)); + CPPUNIT_ASSERT_EQUAL(index::ALL, inActiveFilter.state(*leafIter)); + + auto indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(!activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } + + { // set all voxels to be active in the first leaf + firstLeaf->getValueMask().set(true); + + auto leafIter = points->tree().cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(index::ALL, activeFilter.state(*leafIter)); + CPPUNIT_ASSERT_EQUAL(index::NONE, inActiveFilter.state(*leafIter)); + + auto indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + activeFilter.reset(*leafIter); + inActiveFilter.reset(*leafIter); + + CPPUNIT_ASSERT(activeFilter.valid(indexIter)); + CPPUNIT_ASSERT(!inActiveFilter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } +} + +void +TestIndexFilter::testMultiGroupFilter() +{ + using LeafNode = PointDataTree::LeafNodeType; + using AttributeVec3f = TypedAttributeArray; + + PointDataTree tree; + LeafNode* leaf = tree.touchLeaf(openvdb::Coord(0, 0, 0)); + + using Descriptor = AttributeSet::Descriptor; + Descriptor::Ptr descriptor = Descriptor::create(AttributeVec3f::attributeType()); + + const Index size = 5; + + leaf->initializeAttributes(descriptor, size); + + appendGroup(tree, "even"); + appendGroup(tree, "odd"); + appendGroup(tree, "all"); + appendGroup(tree, "first"); + + { // construction, copy construction + std::vector includeGroups; + std::vector excludeGroups; + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + CPPUNIT_ASSERT(!filter.initialized()); + MultiGroupFilter filter2 = filter; + CPPUNIT_ASSERT(!filter2.initialized()); + + filter.reset(*leaf); + CPPUNIT_ASSERT(filter.initialized()); + MultiGroupFilter filter3 = filter; + CPPUNIT_ASSERT(filter3.initialized()); + } + + // group population + + { // even + GroupWriteHandle groupHandle = leaf->groupWriteHandle("even"); + groupHandle.set(0, true); + groupHandle.set(2, true); + groupHandle.set(4, true); + } + + { // odd + GroupWriteHandle groupHandle = leaf->groupWriteHandle("odd"); + groupHandle.set(1, true); + groupHandle.set(3, true); + } + + setGroup(tree, "all", true); + + { // first + GroupWriteHandle groupHandle = leaf->groupWriteHandle("first"); + groupHandle.set(0, true); + } + + { // test state() + std::vector include; + std::vector exclude; + MultiGroupFilter filter(include, exclude, leaf->attributeSet()); + CPPUNIT_ASSERT_EQUAL(filter.state(), index::ALL); + include.push_back("all"); + MultiGroupFilter filter2(include, exclude, leaf->attributeSet()); + CPPUNIT_ASSERT_EQUAL(filter2.state(), index::PARTIAL); + } + + // test multi group iteration + + { // all (implicit, no include or exclude) + std::vector include; + std::vector exclude; + std::vector indices{0, 1, 2, 3, 4}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // all include + std::vector include{"all"}; + std::vector exclude; + std::vector indices{0, 1, 2, 3, 4}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // all exclude + std::vector include; + std::vector exclude{"all"}; + std::vector indices; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // all include and exclude + std::vector include{"all"}; + std::vector exclude{"all"}; + std::vector indices; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // even include + std::vector include{"even"}; + std::vector exclude; + std::vector indices{0, 2, 4}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // odd include + std::vector include{"odd"}; + std::vector exclude; + std::vector indices{1, 3}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // odd include and exclude + std::vector include{"odd"}; + std::vector exclude{"odd"}; + std::vector indices; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // odd and first include + std::vector include{"odd", "first"}; + std::vector exclude; + std::vector indices{0, 1, 3}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // even include, first exclude + std::vector include{"even"}; + std::vector exclude{"first"}; + std::vector indices{2, 4}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // all include, first and odd exclude + std::vector include{"all"}; + std::vector exclude{"first", "odd"}; + std::vector indices{2, 4}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } + + { // odd and first include, even exclude + std::vector include{"odd", "first"}; + std::vector exclude{"even"}; + std::vector indices{1, 3}; + CPPUNIT_ASSERT(multiGroupMatches(*leaf, size, include, exclude, indices)); + } +} + + +void +TestIndexFilter::testRandomLeafFilter() +{ + { // generateRandomSubset + std::vector values = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(0), 1, 20); + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(1)); + + // different seed + + std::vector values2 = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(1), 1, 20); + + CPPUNIT_ASSERT_EQUAL(values2.size(), size_t(1)); + CPPUNIT_ASSERT(values[0] != values2[0]); + + // different integer type + + std::vector values3 = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(0), 1, 20); + + CPPUNIT_ASSERT_EQUAL(values3.size(), size_t(1)); + CPPUNIT_ASSERT(values[0] == values3[0]); + + // different random number generator + + values = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(1), 1, 20); + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(1)); + CPPUNIT_ASSERT(values[0] != values2[0]); + + // no values + + values = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(0), 0, 20); + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(0)); + + // all values + + values = index_filter_internal::generateRandomSubset( + /*seed*/unsigned(0), 1000, 1000); + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(1000)); + + // ensure all numbers are represented + + std::sort(values.begin(), values.end()); + + for (int i = 0; i < 1000; i++) { + CPPUNIT_ASSERT_EQUAL(values[i], i); + } + } + + { // RandomLeafFilter + using RandFilter = RandomLeafFilter; + + PointDataTree tree; + + RandFilter filter(tree, 0); + + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + + filter.mLeafMap[Coord(0, 0, 0)] = std::make_pair(0, 10); + filter.mLeafMap[Coord(0, 0, 8)] = std::make_pair(1, 1); + filter.mLeafMap[Coord(0, 8, 0)] = std::make_pair(2, 50); + + { // construction, copy construction + CPPUNIT_ASSERT(filter.initialized()); + RandFilter filter2 = filter; + CPPUNIT_ASSERT(filter2.initialized()); + + filter.reset(OriginLeaf(Coord(0, 0, 0), 10)); + CPPUNIT_ASSERT(filter.initialized()); + RandFilter filter3 = filter; + CPPUNIT_ASSERT(filter3.initialized()); + } + + { // all 10 values + filter.reset(OriginLeaf(Coord(0, 0, 0), 10)); + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(10)); + + for (int i = 0; i < 10; i++) { + CPPUNIT_ASSERT_EQUAL(values[i], i); + } + } + + { // 50 of 100 + filter.reset(OriginLeaf(Coord(0, 8, 0), 100)); + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(50)); + + // ensure no duplicates + + std::sort(values.begin(), values.end()); + auto it = std::adjacent_find(values.begin(), values.end()); + + CPPUNIT_ASSERT(it == values.end()); + } + } +} + + +inline void +setId(PointDataTree& tree, const size_t index, const std::vector& ids) +{ + int offset = 0; + for (auto leafIter = tree.beginLeaf(); leafIter; ++leafIter) { + auto id = AttributeWriteHandle::create(leafIter->attributeArray(index)); + + for (auto iter = leafIter->beginIndexAll(); iter; ++iter) { + if (offset >= int(ids.size())) throw std::runtime_error("Out of range"); + + id->set(*iter, ids[offset++]); + } + } +} + + +void +TestIndexFilter::testAttributeHashFilter() +{ + std::vector positions{{1, 1, 1}, {2, 2, 2}, {11, 11, 11}, {12, 12, 12}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // four points, two leafs + + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(2)); + + appendAttribute(tree, "id"); + + const size_t index = tree.cbeginLeaf()->attributeSet().descriptor().find("id"); + + // ascending integers, block one + std::vector ids{1, 2, 3, 4}; + setId(tree, index, ids); + + using HashFilter = AttributeHashFilter; + + { // construction, copy construction + HashFilter filter(index, 0.0f); + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + CPPUNIT_ASSERT(!filter.initialized()); + HashFilter filter2 = filter; + CPPUNIT_ASSERT(!filter2.initialized()); + + filter.reset(*tree.cbeginLeaf()); + CPPUNIT_ASSERT(filter.initialized()); + HashFilter filter3 = filter; + CPPUNIT_ASSERT(filter3.initialized()); + } + + { // zero percent + HashFilter filter(index, 0.0f); + + auto leafIter = tree.cbeginLeaf(); + + auto indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } + + { // one hundred percent + HashFilter filter(index, 100.0f); + + auto leafIter = tree.cbeginLeaf(); + + auto indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } + + { // fifty percent + HashFilter filter(index, 50.0f); + + auto leafIter = tree.cbeginLeaf(); + + auto indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } + + { // fifty percent, new seed + HashFilter filter(index, 50.0f, /*seed=*/100); + + auto leafIter = tree.cbeginLeaf(); + + auto indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + ++leafIter; + + indexIter = leafIter->beginIndexAll(); + filter.reset(*leafIter); + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(filter.valid(indexIter)); + ++indexIter; + CPPUNIT_ASSERT(!indexIter); + } +} + + +void +TestIndexFilter::testLevelSetFilter() +{ + // create a point grid + + PointDataGrid::Ptr points; + + { + std::vector positions{{1, 1, 1}, {1, 2, 1}, {10.1f, 10, 1}}; + + const double voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + points = createPointDataGrid(positions, *transform); + } + + // create a sphere levelset + + FloatGrid::Ptr sphere; + + { + double voxelSize = 0.5; + sphere = FloatGrid::create(/*backgroundValue=*/5.0); + sphere->setTransform(math::Transform::createLinearTransform(voxelSize)); + + const openvdb::Coord dim(10, 10, 10); + const openvdb::Vec3f center(0.0f, 0.0f, 0.0f); + const float radius = 2; + makeSphere(dim, center, radius, *sphere); + } + + using LSFilter = LevelSetFilter; + + { // construction, copy construction + LSFilter filter(*sphere, points->transform(), -4.0f, 4.0f); + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + CPPUNIT_ASSERT(!filter.initialized()); + LSFilter filter2 = filter; + CPPUNIT_ASSERT(!filter2.initialized()); + + filter.reset(* points->tree().cbeginLeaf()); + CPPUNIT_ASSERT(filter.initialized()); + LSFilter filter3 = filter; + CPPUNIT_ASSERT(filter3.initialized()); + } + + { // capture both points near origin + LSFilter filter(*sphere, points->transform(), -4.0f, 4.0f); + auto leafIter = points->tree().cbeginLeaf(); + auto iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + + ++leafIter; + iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + } + + { // capture just the inner-most point + LSFilter filter(*sphere, points->transform(), -0.3f, -0.25f); + auto leafIter = points->tree().cbeginLeaf(); + auto iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + + ++leafIter; + iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + } + + { // capture everything but the second point (min > max) + LSFilter filter(*sphere, points->transform(), -0.25f, -0.3f); + auto leafIter = points->tree().cbeginLeaf(); + auto iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + + ++leafIter; + iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + } + + { + std::vector positions{{1, 1, 1}, {1, 2, 1}, {10.1f, 10, 1}}; + + const double voxelSize(0.25); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + points = createPointDataGrid(positions, *transform); + } + + { + double voxelSize = 1.0; + sphere = FloatGrid::create(/*backgroundValue=*/5.0); + sphere->setTransform(math::Transform::createLinearTransform(voxelSize)); + + const openvdb::Coord dim(40, 40, 40); + const openvdb::Vec3f center(10.0f, 10.0f, 0.1f); + const float radius = 0.2f; + makeSphere(dim, center, radius, *sphere); + } + + { // capture only the last point using a different transform and a new sphere + LSFilter filter(*sphere, points->transform(), 0.5f, 1.0f); + auto leafIter = points->tree().cbeginLeaf(); + auto iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + + ++leafIter; + iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(!filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + + ++leafIter; + iter = leafIter->beginIndexOn(); + filter.reset(*leafIter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT(filter.valid(iter)); + ++iter; + CPPUNIT_ASSERT(!iter); + } +} + + +void +TestIndexFilter::testBBoxFilter() +{ + std::vector positions{{1, 1, 1}, {1, 2, 1}, {10.1f, 10, 1}}; + + const float voxelSize(0.5); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check one leaf per point + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(2)); + + // build some bounding box filters to test + + BBoxFilter filter1(*transform, BBoxd({0.5, 0.5, 0.5}, {1.5, 1.5, 1.5})); + BBoxFilter filter2(*transform, BBoxd({0.5, 0.5, 0.5}, {1.5, 2.01, 1.5})); + BBoxFilter filter3(*transform, BBoxd({0.5, 0.5, 0.5}, {11, 11, 1.5})); + BBoxFilter filter4(*transform, BBoxd({-10, 0, 0}, {11, 1.2, 1.2})); + + { // construction, copy construction + CPPUNIT_ASSERT(!filter1.initialized()); + BBoxFilter filter5 = filter1; + CPPUNIT_ASSERT(!filter5.initialized()); + + filter1.reset(*tree.cbeginLeaf()); + CPPUNIT_ASSERT(filter1.initialized()); + BBoxFilter filter6 = filter1; + CPPUNIT_ASSERT(filter6.initialized()); + } + + // leaf 1 + + auto leafIter = tree.cbeginLeaf(); + + { + auto iter(leafIter->beginIndexOn()); + + // point 1 + + filter1.reset(*leafIter); + CPPUNIT_ASSERT(filter1.valid(iter)); + filter2.reset(*leafIter); + CPPUNIT_ASSERT(filter2.valid(iter)); + filter3.reset(*leafIter); + CPPUNIT_ASSERT(filter3.valid(iter)); + filter4.reset(*leafIter); + CPPUNIT_ASSERT(filter4.valid(iter)); + + ++iter; + + // point 2 + + filter1.reset(*leafIter); + CPPUNIT_ASSERT(!filter1.valid(iter)); + filter2.reset(*leafIter); + CPPUNIT_ASSERT(filter2.valid(iter)); + filter3.reset(*leafIter); + CPPUNIT_ASSERT(filter3.valid(iter)); + filter4.reset(*leafIter); + CPPUNIT_ASSERT(!filter4.valid(iter)); + + ++iter; + CPPUNIT_ASSERT(!iter); + } + + ++leafIter; + + // leaf 2 + + { + auto iter(leafIter->beginIndexOn()); + + // point 3 + + filter1.reset(*leafIter); + CPPUNIT_ASSERT(!filter1.valid(iter)); + filter2.reset(*leafIter); + CPPUNIT_ASSERT(!filter2.valid(iter)); + filter3.reset(*leafIter); + CPPUNIT_ASSERT(filter3.valid(iter)); + filter4.reset(*leafIter); + CPPUNIT_ASSERT(!filter4.valid(iter)); + + ++iter; + CPPUNIT_ASSERT(!iter); + } +} + + +struct NeedsInitializeFilter +{ + inline bool initialized() const { return mInitialized; } + static index::State state() { return index::PARTIAL; } + template + inline index::State state(const LeafT&) { return index::PARTIAL; } + template + void reset(const LeafT&) { mInitialized = true; } +private: + bool mInitialized = false; +}; + + +void +TestIndexFilter::testBinaryFilter() +{ + const int intMax = std::numeric_limits::max(); + + { // construction, copy construction + using InitializeBinaryFilter = BinaryFilter; + + NeedsInitializeFilter needs1; + NeedsInitializeFilter needs2; + InitializeBinaryFilter filter(needs1, needs2); + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + CPPUNIT_ASSERT(!filter.initialized()); + InitializeBinaryFilter filter2 = filter; + CPPUNIT_ASSERT(!filter2.initialized()); + + filter.reset(OriginLeaf(Coord(0, 0, 0))); + CPPUNIT_ASSERT(filter.initialized()); + InitializeBinaryFilter filter3 = filter; + CPPUNIT_ASSERT(filter3.initialized()); + } + + using LessThanFilter = ThresholdFilter; + using GreaterThanFilter = ThresholdFilter; + + { // less than + LessThanFilter zeroFilter(0); // all invalid + CPPUNIT_ASSERT(zeroFilter.state() == index::NONE); + LessThanFilter maxFilter(intMax); // all valid + CPPUNIT_ASSERT(maxFilter.state() == index::ALL); + + LessThanFilter filter(5); + filter.reset(OriginLeaf(Coord(0, 0, 0))); + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(5)); + + for (int i = 0; i < 5; i++) { + CPPUNIT_ASSERT_EQUAL(values[i], i); + } + } + + { // greater than + GreaterThanFilter zeroFilter(0); // all valid + CPPUNIT_ASSERT(zeroFilter.state() == index::ALL); + GreaterThanFilter maxFilter(intMax); // all invalid + CPPUNIT_ASSERT(maxFilter.state() == index::NONE); + + GreaterThanFilter filter(94); + filter.reset(OriginLeaf(Coord(0, 0, 0))); + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(5)); + + int offset = 0; + for (int i = 95; i < 100; i++) { + CPPUNIT_ASSERT_EQUAL(values[offset++], i); + } + } + + { // binary and + using RangeFilter = BinaryFilter; + + RangeFilter zeroFilter(LessThanFilter(0), GreaterThanFilter(10)); // all invalid + CPPUNIT_ASSERT(zeroFilter.state() == index::NONE); + RangeFilter maxFilter(LessThanFilter(intMax), GreaterThanFilter(0)); // all valid + CPPUNIT_ASSERT(maxFilter.state() == index::ALL); + + RangeFilter filter(LessThanFilter(55), GreaterThanFilter(45)); + CPPUNIT_ASSERT(filter.state() == index::PARTIAL); + + filter.reset(OriginLeaf(Coord(0, 0, 0))); + + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(9)); + + int offset = 0; + for (int i = 46; i < 55; i++) { + CPPUNIT_ASSERT_EQUAL(values[offset++], i); + } + } + + { // binary or + using HeadTailFilter = BinaryFilter; + + HeadTailFilter zeroFilter(LessThanFilter(0), GreaterThanFilter(10)); // some valid + CPPUNIT_ASSERT(zeroFilter.state() == index::PARTIAL); + HeadTailFilter maxFilter(LessThanFilter(intMax), GreaterThanFilter(0)); // all valid + CPPUNIT_ASSERT(maxFilter.state() == index::ALL); + + HeadTailFilter filter(LessThanFilter(5), GreaterThanFilter(95)); + filter.reset(OriginLeaf(Coord(0, 0, 0))); + + std::vector values; + + for (SimpleIter iter; *iter < 100; ++iter) { + if (filter.valid(iter)) values.push_back(*iter); + } + + CPPUNIT_ASSERT_EQUAL(values.size(), size_t(9)); + + int offset = 0; + for (int i = 0; i < 5; i++) { + CPPUNIT_ASSERT_EQUAL(values[offset++], i); + } + for (int i = 96; i < 100; i++) { + CPPUNIT_ASSERT_EQUAL(values[offset++], i); + } + } +} diff --git a/openvdb/unittest/TestIndexIterator.cc b/openvdb/unittest/TestIndexIterator.cc new file mode 100644 index 00000000..00c7a66e --- /dev/null +++ b/openvdb/unittest/TestIndexIterator.cc @@ -0,0 +1,396 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include +#include + +#include +#include +#include +#include //for setprecision + +using namespace openvdb; +using namespace openvdb::points; + +class TestIndexIterator: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestIndexIterator); + CPPUNIT_TEST(testNullFilter); + CPPUNIT_TEST(testValueIndexIterator); + CPPUNIT_TEST(testFilterIndexIterator); + CPPUNIT_TEST(testProfile); + + CPPUNIT_TEST_SUITE_END(); + + void testNullFilter(); + void testValueIndexIterator(); + void testFilterIndexIterator(); + void testProfile(); +}; // class TestIndexIterator + +CPPUNIT_TEST_SUITE_REGISTRATION(TestIndexIterator); + + +//////////////////////////////////////// + + +/// @brief Functionality similar to openvdb::util::CpuTimer except with prefix padding and no decimals. +/// +/// @code +/// ProfileTimer timer("algorithm 1"); +/// // code to be timed goes here +/// timer.stop(); +/// @endcode +class ProfileTimer +{ +public: + /// @brief Prints message and starts timer. + /// + /// @note Should normally be followed by a call to stop() + ProfileTimer(const std::string& msg) + { + (void)msg; +#ifdef PROFILE + // padd string to 50 characters + std::string newMsg(msg); + if (newMsg.size() < 50) newMsg.insert(newMsg.end(), 50 - newMsg.size(), ' '); + std::cerr << newMsg << " ... "; +#endif + mT0 = tbb::tick_count::now(); + } + + ~ProfileTimer() { this->stop(); } + + /// Return Time diference in milliseconds since construction or start was called. + inline double delta() const + { + tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0; + return 1000.0*dt.seconds(); + } + + /// @brief Print time in milliseconds since construction or start was called. + inline void stop() const + { +#ifdef PROFILE + std::stringstream ss; + ss << std::setw(6) << ::round(this->delta()); + std::cerr << "completed in " << ss.str() << " ms\n"; +#endif + } + +private: + tbb::tick_count mT0; +};// ProfileTimer + + +//////////////////////////////////////// + + +void +TestIndexIterator::testNullFilter() +{ + NullFilter filter; + CPPUNIT_ASSERT(filter.initialized()); + CPPUNIT_ASSERT(filter.state() == index::ALL); + int a; + CPPUNIT_ASSERT(filter.valid(a)); +} + + +void +TestIndexIterator::testValueIndexIterator() +{ + using namespace openvdb::tree; + + using LeafNode = LeafNode; + using ValueOnIter = LeafNode::ValueOnIter; + + const int size = LeafNode::SIZE; + + { // one per voxel offset, all active + LeafNode leafNode; + + for (int i = 0; i < size; i++) { + leafNode.setValueOn(i, i+1); + } + + ValueOnIter valueIter = leafNode.beginValueOn(); + + IndexIter::ValueIndexIter iter(valueIter); + + CPPUNIT_ASSERT(iter); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter), Index64(size)); + + // check assignment operator + auto iter2 = iter; + CPPUNIT_ASSERT_EQUAL(iterCount(iter2), Index64(size)); + + ++iter; + + // check coord value + Coord xyz; + iter.getCoord(xyz); + CPPUNIT_ASSERT_EQUAL(xyz, openvdb::Coord(0, 0, 1)); + CPPUNIT_ASSERT_EQUAL(iter.getCoord(), openvdb::Coord(0, 0, 1)); + + // check iterators retrieval + CPPUNIT_ASSERT_EQUAL(iter.valueIter().getCoord(), openvdb::Coord(0, 0, 1)); + CPPUNIT_ASSERT_EQUAL(iter.end(), Index32(2)); + + ++iter; + + // check coord value + iter.getCoord(xyz); + CPPUNIT_ASSERT_EQUAL(xyz, openvdb::Coord(0, 1, 0)); + CPPUNIT_ASSERT_EQUAL(iter.getCoord(), openvdb::Coord(0, 1, 0)); + + // check iterators retrieval + CPPUNIT_ASSERT_EQUAL(iter.valueIter().getCoord(), openvdb::Coord(0, 1, 0)); + CPPUNIT_ASSERT_EQUAL(iter.end(), Index32(3)); + } + + { // one per even voxel offsets, only these active + LeafNode leafNode; + + int offset = 0; + + for (int i = 0; i < size; i++) + { + if ((i % 2) == 0) { + leafNode.setValueOn(i, ++offset); + } + else { + leafNode.setValueOff(i, offset); + } + } + + { + ValueOnIter valueIter = leafNode.beginValueOn(); + + IndexIter::ValueIndexIter iter(valueIter); + + CPPUNIT_ASSERT(iter); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter), Index64(size/2)); + } + } + + { // one per odd voxel offsets, all active + LeafNode leafNode; + + int offset = 0; + + for (int i = 0; i < size; i++) + { + if ((i % 2) == 1) { + leafNode.setValueOn(i, offset++); + } + else { + leafNode.setValueOn(i, offset); + } + } + + { + ValueOnIter valueIter = leafNode.beginValueOn(); + + IndexIter::ValueIndexIter iter(valueIter); + + CPPUNIT_ASSERT(iter); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter), Index64(3)); + } + } + + { // one per even voxel offsets, all active + LeafNode leafNode; + + int offset = 0; + + for (int i = 0; i < size; i++) + { + if ((i % 2) == 0) { + leafNode.setValueOn(i, offset++); + } + else { + leafNode.setValueOn(i, offset); + } + } + + { + ValueOnIter valueIter = leafNode.beginValueOn(); + + IndexIter::ValueIndexIter iter(valueIter); + + CPPUNIT_ASSERT(iter); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter), Index64(size/2)); + } + } + + { // one per voxel offset, none active + LeafNode leafNode; + + for (int i = 0; i < size; i++) { + leafNode.setValueOff(i, i); + } + + ValueOnIter valueIter = leafNode.beginValueOn(); + + IndexIter::ValueIndexIter iter(valueIter); + + CPPUNIT_ASSERT(!iter); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter), Index64(0)); + } +} + + +struct EvenIndexFilter +{ + static bool initialized() { return true; } + static bool all() { return false; } + static bool none() { return false; } + template + bool valid(const IterT& iter) const { + return ((*iter) % 2) == 0; + } +}; + + +struct OddIndexFilter +{ + static bool initialized() { return true; } + static bool all() { return false; } + static bool none() { return false; } + OddIndexFilter() : mFilter() { } + template + bool valid(const IterT& iter) const { + return !mFilter.valid(iter); + } +private: + EvenIndexFilter mFilter; +}; + + +struct ConstantIter +{ + ConstantIter(const int _value) : value(_value) { } + int operator*() const { return value; } + const int value; +}; + + +void +TestIndexIterator::testFilterIndexIterator() +{ + { // index iterator with even filter + EvenIndexFilter filter; + ValueVoxelCIter indexIter(0, 5); + IndexIter iter(indexIter, filter); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(0)); + + CPPUNIT_ASSERT(iter.next()); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(2)); + + CPPUNIT_ASSERT(iter.next()); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(4)); + + CPPUNIT_ASSERT(!iter.next()); + + CPPUNIT_ASSERT_EQUAL(iter.end(), Index32(5)); + CPPUNIT_ASSERT_EQUAL(filter.valid(ConstantIter(1)), iter.filter().valid(ConstantIter(1))); + CPPUNIT_ASSERT_EQUAL(filter.valid(ConstantIter(2)), iter.filter().valid(ConstantIter(2))); + } + + { // index iterator with odd filter + OddIndexFilter filter; + ValueVoxelCIter indexIter(0, 5); + IndexIter iter(indexIter, filter); + + CPPUNIT_ASSERT_EQUAL(*iter, Index32(1)); + + CPPUNIT_ASSERT(iter.next()); + CPPUNIT_ASSERT_EQUAL(*iter, Index32(3)); + + CPPUNIT_ASSERT(!iter.next()); + } +} + +void +TestIndexIterator::testProfile() +{ + using namespace openvdb::util; + using namespace openvdb::math; + using namespace openvdb::tree; + +#ifdef PROFILE + const int elements(1000 * 1000 * 1000); + + std::cerr << std::endl; +#else + const int elements(10 * 1000 * 1000); +#endif + + { // for loop + ProfileTimer timer("ForLoop: sum"); + volatile int sum = 0; + for (int i = 0; i < elements; i++) { + sum += i; + } + CPPUNIT_ASSERT(sum); + } + + { // index iterator + ProfileTimer timer("IndexIter: sum"); + volatile int sum = 0; + ValueVoxelCIter iter(0, elements); + for (; iter; ++iter) { + sum += *iter; + } + CPPUNIT_ASSERT(sum); + } + + using LeafNode = LeafNode; + LeafNode leafNode; + + const int size = LeafNode::SIZE; + + for (int i = 0; i < size - 1; i++) { + leafNode.setValueOn(i, (elements / size) * i); + } + leafNode.setValueOn(size - 1, elements); + + { // manual value iteration + ProfileTimer timer("ValueIteratorManual: sum"); + volatile int sum = 0; + auto indexIter(leafNode.cbeginValueOn()); + int offset = 0; + for (; indexIter; ++indexIter) { + int start = offset > 0 ? leafNode.getValue(offset - 1) : 0; + int end = leafNode.getValue(offset); + for (int i = start; i < end; i++) { + sum += i; + } + offset++; + } + CPPUNIT_ASSERT(sum); + } + + { // value on iterator (all on) + ProfileTimer timer("ValueIndexIter: sum"); + volatile int sum = 0; + auto indexIter(leafNode.cbeginValueAll()); + IndexIter::ValueIndexIter iter(indexIter); + for (; iter; ++iter) { + sum += *iter; + } + CPPUNIT_ASSERT(sum); + } +} diff --git a/openvdb/unittest/TestInit.cc b/openvdb/unittest/TestInit.cc new file mode 100644 index 00000000..fa02fb2b --- /dev/null +++ b/openvdb/unittest/TestInit.cc @@ -0,0 +1,91 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + + +class TestInit: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestInit); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestInit); + + +void +TestInit::test() +{ + using namespace openvdb; + + initialize(); + + // data types + CPPUNIT_ASSERT(DoubleMetadata::isRegisteredType()); + CPPUNIT_ASSERT(FloatMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Int32Metadata::isRegisteredType()); + CPPUNIT_ASSERT(Int64Metadata::isRegisteredType()); + CPPUNIT_ASSERT(StringMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec2IMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec2SMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec2DMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec3IMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec3SMetadata::isRegisteredType()); + CPPUNIT_ASSERT(Vec3DMetadata::isRegisteredType()); + + // map types + CPPUNIT_ASSERT(math::AffineMap::isRegistered()); + CPPUNIT_ASSERT(math::UnitaryMap::isRegistered()); + CPPUNIT_ASSERT(math::ScaleMap::isRegistered()); + CPPUNIT_ASSERT(math::TranslationMap::isRegistered()); + CPPUNIT_ASSERT(math::ScaleTranslateMap::isRegistered()); + CPPUNIT_ASSERT(math::NonlinearFrustumMap::isRegistered()); + + // grid types + CPPUNIT_ASSERT(BoolGrid::isRegistered()); + CPPUNIT_ASSERT(FloatGrid::isRegistered()); + CPPUNIT_ASSERT(DoubleGrid::isRegistered()); + CPPUNIT_ASSERT(Int32Grid::isRegistered()); + CPPUNIT_ASSERT(Int64Grid::isRegistered()); + CPPUNIT_ASSERT(StringGrid::isRegistered()); + CPPUNIT_ASSERT(Vec3IGrid::isRegistered()); + CPPUNIT_ASSERT(Vec3SGrid::isRegistered()); + CPPUNIT_ASSERT(Vec3DGrid::isRegistered()); + + uninitialize(); + + CPPUNIT_ASSERT(!DoubleMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!FloatMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Int32Metadata::isRegisteredType()); + CPPUNIT_ASSERT(!Int64Metadata::isRegisteredType()); + CPPUNIT_ASSERT(!StringMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec2IMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec2SMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec2DMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec3IMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec3SMetadata::isRegisteredType()); + CPPUNIT_ASSERT(!Vec3DMetadata::isRegisteredType()); + + CPPUNIT_ASSERT(!math::AffineMap::isRegistered()); + CPPUNIT_ASSERT(!math::UnitaryMap::isRegistered()); + CPPUNIT_ASSERT(!math::ScaleMap::isRegistered()); + CPPUNIT_ASSERT(!math::TranslationMap::isRegistered()); + CPPUNIT_ASSERT(!math::ScaleTranslateMap::isRegistered()); + CPPUNIT_ASSERT(!math::NonlinearFrustumMap::isRegistered()); + + CPPUNIT_ASSERT(!BoolGrid::isRegistered()); + CPPUNIT_ASSERT(!FloatGrid::isRegistered()); + CPPUNIT_ASSERT(!DoubleGrid::isRegistered()); + CPPUNIT_ASSERT(!Int32Grid::isRegistered()); + CPPUNIT_ASSERT(!Int64Grid::isRegistered()); + CPPUNIT_ASSERT(!StringGrid::isRegistered()); + CPPUNIT_ASSERT(!Vec3IGrid::isRegistered()); + CPPUNIT_ASSERT(!Vec3SGrid::isRegistered()); + CPPUNIT_ASSERT(!Vec3DGrid::isRegistered()); +} diff --git a/openvdb/unittest/TestInt32Metadata.cc b/openvdb/unittest/TestInt32Metadata.cc new file mode 100644 index 00000000..ae0f77e3 --- /dev/null +++ b/openvdb/unittest/TestInt32Metadata.cc @@ -0,0 +1,43 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestInt32Metadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestInt32Metadata); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestInt32Metadata); + +void +TestInt32Metadata::test() +{ + using namespace openvdb; + + Metadata::Ptr m(new Int32Metadata(123)); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("int32") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("int32") == 0); + + Int32Metadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == 123); + s->value() = 456; + CPPUNIT_ASSERT(s->value() == 456); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value() == 456); +} diff --git a/openvdb/unittest/TestInt64Metadata.cc b/openvdb/unittest/TestInt64Metadata.cc new file mode 100644 index 00000000..460ee9c6 --- /dev/null +++ b/openvdb/unittest/TestInt64Metadata.cc @@ -0,0 +1,43 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestInt64Metadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestInt64Metadata); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestInt64Metadata); + +void +TestInt64Metadata::test() +{ + using namespace openvdb; + + Metadata::Ptr m(new Int64Metadata(123)); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("int64") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("int64") == 0); + + Int64Metadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == 123); + s->value() = 456; + CPPUNIT_ASSERT(s->value() == 456); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value() == 456); +} diff --git a/openvdb/unittest/TestInternalOrigin.cc b/openvdb/unittest/TestInternalOrigin.cc new file mode 100644 index 00000000..f757fca7 --- /dev/null +++ b/openvdb/unittest/TestInternalOrigin.cc @@ -0,0 +1,75 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + +class TestInternalOrigin: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestInternalOrigin); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestInternalOrigin); + +void +TestInternalOrigin::test() +{ + std::set indices; + indices.insert(openvdb::Coord( 0, 0, 0)); + indices.insert(openvdb::Coord( 1, 0, 0)); + indices.insert(openvdb::Coord( 0,100, 8)); + indices.insert(openvdb::Coord(-9, 0, 8)); + indices.insert(openvdb::Coord(32, 0, 16)); + indices.insert(openvdb::Coord(33, -5, 16)); + indices.insert(openvdb::Coord(42,707,-35)); + indices.insert(openvdb::Coord(43, 17, 64)); + + typedef openvdb::tree::Tree4::Type FloatTree4; + FloatTree4 tree(0.0f); + std::set::iterator iter=indices.begin(); + for (int n = 0; iter != indices.end(); ++n, ++iter) { + tree.setValue(*iter, float(1.0 + double(n) * 0.5)); + } + + openvdb::Coord C3, G; + typedef FloatTree4::RootNodeType Node0; + typedef Node0::ChildNodeType Node1; + typedef Node1::ChildNodeType Node2; + typedef Node2::LeafNodeType Node3; + for (Node0::ChildOnCIter iter0=tree.root().cbeginChildOn(); iter0; ++iter0) {//internal 1 + openvdb::Coord C0=iter0->origin(); + iter0.getCoord(G); + CPPUNIT_ASSERT_EQUAL(C0,G); + for (Node1::ChildOnCIter iter1=iter0->cbeginChildOn(); iter1; ++iter1) {//internal 2 + openvdb::Coord C1=iter1->origin(); + iter1.getCoord(G); + CPPUNIT_ASSERT_EQUAL(C1,G); + CPPUNIT_ASSERT(C0 <= C1); + CPPUNIT_ASSERT(C1 <= C0 + openvdb::Coord(Node1::DIM,Node1::DIM,Node1::DIM)); + for (Node2::ChildOnCIter iter2=iter1->cbeginChildOn(); iter2; ++iter2) {//leafs + openvdb::Coord C2=iter2->origin(); + iter2.getCoord(G); + CPPUNIT_ASSERT_EQUAL(C2,G); + CPPUNIT_ASSERT(C1 <= C2); + CPPUNIT_ASSERT(C2 <= C1 + openvdb::Coord(Node2::DIM,Node2::DIM,Node2::DIM)); + for (Node3::ValueOnCIter iter3=iter2->cbeginValueOn(); iter3; ++iter3) {//leaf voxels + iter3.getCoord(G); + iter = indices.find(G); + CPPUNIT_ASSERT(iter != indices.end()); + indices.erase(iter); + } + } + } + } + CPPUNIT_ASSERT(indices.size() == 0); +} diff --git a/openvdb/unittest/TestLaplacian.cc b/openvdb/unittest/TestLaplacian.cc new file mode 100644 index 00000000..31db23d6 --- /dev/null +++ b/openvdb/unittest/TestLaplacian.cc @@ -0,0 +1,462 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include +#include + + +class TestLaplacian: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestLaplacian); + CPPUNIT_TEST(testISLaplacian); // Laplacian in Index Space + CPPUNIT_TEST(testISLaplacianStencil); + CPPUNIT_TEST(testWSLaplacian); // Laplacian in World Space + CPPUNIT_TEST(testWSLaplacianFrustum); // Laplacian in World Space + CPPUNIT_TEST(testWSLaplacianStencil); + CPPUNIT_TEST(testLaplacianTool); // Laplacian tool + CPPUNIT_TEST(testLaplacianMaskedTool); // Laplacian tool + CPPUNIT_TEST(testOldStyleStencils); // old stencil impl + CPPUNIT_TEST_SUITE_END(); + + void testISLaplacian(); + void testISLaplacianStencil(); + void testWSLaplacian(); + void testWSLaplacianFrustum(); + void testWSLaplacianStencil(); + void testLaplacianTool(); + void testLaplacianMaskedTool(); + void testOldStyleStencils(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLaplacian); + +void +TestLaplacian::testISLaplacian() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Coord c(35,30,40); + const openvdb::Vec3f + center(static_cast(c[0]), static_cast(c[1]), static_cast(c[2])); + const float radius=0.0f;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + Coord xyz(35,10,40); + + // Index Space Laplacian random access + FloatGrid::ConstAccessor inAccessor = grid->getConstAccessor(); + FloatGrid::ValueType result; + result = math::ISLaplacian::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); + + result = math::ISLaplacian::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); + + result = math::ISLaplacian::result(inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); +} + + +void +TestLaplacian::testISLaplacianStencil() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Coord c(35,30,40); + const openvdb::Vec3f + center(static_cast(c[0]), static_cast(c[1]), static_cast(c[2])); + const float radius=0;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + Coord xyz(35,10,40); + + // Index Space Laplacian stencil access + FloatGrid::ValueType result; + + math::SevenPointStencil sevenpt(*grid); + sevenpt.moveTo(xyz); + result = math::ISLaplacian::result(sevenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); + + math::ThirteenPointStencil thirteenpt(*grid); + thirteenpt.moveTo(xyz); + result = math::ISLaplacian::result(thirteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); + + math::NineteenPointStencil nineteenpt(*grid); + nineteenpt.moveTo(xyz); + result = math::ISLaplacian::result(nineteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20.0, result, /*tolerance=*/0.01); +} + + +void +TestLaplacian::testWSLaplacian() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Coord c(35,30,40); + const openvdb::Vec3f + center(static_cast(c[0]), static_cast(c[1]), static_cast(c[2])); + const float radius=0.0f;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + Coord xyz(35,10,40); + + FloatGrid::ValueType result; + FloatGrid::ConstAccessor inAccessor = grid->getConstAccessor(); + + // try with a map + math::UniformScaleMap map; + math::MapBase::Ptr rotated_map = map.preRotate(1.5, math::X_AXIS); + // verify the new map is an affine map + CPPUNIT_ASSERT(rotated_map->type() == math::AffineMap::mapType()); + math::AffineMap::Ptr affine_map = StaticPtrCast(rotated_map); + + // the laplacian is invariant to rotation + result = math::Laplacian::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result( + *affine_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + // test uniform map + math::UniformScaleMap uniform; + + result = math::Laplacian::result( + uniform, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result( + uniform, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result( + uniform, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + // test the GenericMap Grid interface + { + math::GenericMap generic_map(*grid); + result = math::Laplacian::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + result = math::Laplacian::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + } + { + // test the GenericMap Transform interface + math::GenericMap generic_map(grid->transform()); + result = math::Laplacian::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + } + { + // test the GenericMap Map interface + math::GenericMap generic_map(rotated_map); + result = math::Laplacian::result( + generic_map, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + } + +} + + +void +TestLaplacian::testWSLaplacianFrustum() +{ + using namespace openvdb; + + // Create a Frustum Map: + + openvdb::BBoxd bbox(Vec3d(0), Vec3d(100)); + math::NonlinearFrustumMap frustum(bbox, 1./6., 5); + /// frustum will have depth, far plane - near plane = 5 + /// the frustum has width 1 in the front and 6 in the back + + math::Vec3d trans(2,2,2); + math::NonlinearFrustumMap::Ptr map = + StaticPtrCast( + frustum.preScale(Vec3d(10,10,10))->postTranslate(trans)); + + CPPUNIT_ASSERT(!map->hasUniformScale()); + + math::Vec3d result; + result = map->voxelSize(); + + CPPUNIT_ASSERT( math::isApproxEqual(result.x(), 0.1)); + CPPUNIT_ASSERT( math::isApproxEqual(result.y(), 0.1)); + CPPUNIT_ASSERT( math::isApproxEqual(result.z(), 0.5, 0.0001)); + + + // Create a tree + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/0.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + // Load cos(x)sin(y)cos(z) + Coord ijk(10,10,10); + for (Int32& i=ijk.x(); i < 20; ++i) { + for (Int32& j=ijk.y(); j < 20; ++j) { + for (Int32& k=ijk.z(); k < 20; ++k) { + // world space image of the ijk coord + const Vec3d ws = map->applyMap(ijk.asVec3d()); + const float value = float(cos(ws.x() ) * sin( ws.y()) * cos(ws.z())); + tree.setValue(ijk, value); + } + } + } + + const Coord testloc(16,16,16); + float test_result = math::Laplacian::result( + *map, tree, testloc); + float expected_result = -3.f * tree.getValue(testloc); + + // The exact solution of Laplacian( cos(x)sin(y)cos(z) ) = -3 cos(x) sin(y) cos(z) + + CPPUNIT_ASSERT( math::isApproxEqual(test_result, expected_result, /*tolerance=*/0.02f) ); +} + + +void +TestLaplacian::testWSLaplacianStencil() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Coord c(35,30,40); + const openvdb::Vec3f + center(static_cast(c[0]), static_cast(c[1]), static_cast(c[2])); + const float radius=0.0f;//point at {35,30,40} + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + Coord xyz(35,10,40); + + FloatGrid::ValueType result; + + // try with a map + math::UniformScaleMap map; + math::MapBase::Ptr rotated_map = map.preRotate(1.5, math::X_AXIS); + // verify the new map is an affine map + CPPUNIT_ASSERT(rotated_map->type() == math::AffineMap::mapType()); + math::AffineMap::Ptr affine_map = StaticPtrCast(rotated_map); + + // the laplacian is invariant to rotation + math::SevenPointStencil sevenpt(*grid); + math::ThirteenPointStencil thirteenpt(*grid); + math::NineteenPointStencil nineteenpt(*grid); + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + math::SixthOrderDenseStencil dense_6th(*grid); + sevenpt.moveTo(xyz); + thirteenpt.moveTo(xyz); + nineteenpt.moveTo(xyz); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + result = math::Laplacian::result(*affine_map, dense_2nd); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result(*affine_map, dense_4th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result(*affine_map, dense_6th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + // test uniform map + math::UniformScaleMap uniform; + + result = math::Laplacian::result(uniform, sevenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result(uniform, thirteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + result = math::Laplacian::result(uniform, nineteenpt); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + // test the GenericMap Grid interface + { + math::GenericMap generic_map(*grid); + result = math::Laplacian::result(generic_map, dense_2nd); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + result = math::Laplacian::result(generic_map, dense_4th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + } + { + // test the GenericMap Transform interface + math::GenericMap generic_map(grid->transform()); + result = math::Laplacian::result(generic_map, dense_2nd); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + + } + { + // test the GenericMap Map interface + math::GenericMap generic_map(rotated_map); + result = math::Laplacian::result(generic_map, dense_2nd); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/20., result, /*tolerance=*/0.01); + } +} + + +void +TestLaplacian::testOldStyleStencils() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(/*voxel size=*/0.5)); + CPPUNIT_ASSERT(grid->empty()); + + const Coord dim(32, 32, 32); + const Coord c(35,30,40); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + + math::GradStencil gs(*grid); + math::WenoStencil ws(*grid); + math::CurvatureStencil cs(*grid); + + Coord xyz(20,16,20);//i.e. 8 voxel or 4 world units away from the center + gs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/4.0, gs.laplacian(), 0.01);// 2/distance from center + + ws.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/4.0, ws.laplacian(), 0.01);// 2/distance from center + + cs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/4.0, cs.laplacian(), 0.01);// 2/distance from center + + xyz.reset(12,16,10);//i.e. 10 voxel or 5 world units away from the center + gs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/5.0, gs.laplacian(), 0.01);// 2/distance from center + + ws.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/5.0, ws.laplacian(), 0.01);// 2/distance from center + + cs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0/5.0, cs.laplacian(), 0.01);// 2/distance from center +} + + +void +TestLaplacian::testLaplacianTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64, 64, 64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + FloatGrid::Ptr lap = tools::laplacian(*grid); + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(lap->activeVoxelCount())); + + Coord xyz(35,30,30); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 2.0/10.0, lap->getConstAccessor().getValue(xyz), 0.01);// 2/distance from center + + xyz.reset(35,10,40); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 2.0/20.0, lap->getConstAccessor().getValue(xyz),0.01);// 2/distance from center +} + +void +TestLaplacian::testLaplacianMaskedTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64, 64, 64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41)); + BoolGrid::Ptr maskGrid = BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + + FloatGrid::Ptr lap = tools::laplacian(*grid, *maskGrid); + + {// outside the masked region + Coord xyz(34,30,30); + + CPPUNIT_ASSERT(!maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 0, lap->getConstAccessor().getValue(xyz), 0.01);// 2/distance from center + + xyz.reset(35,10,40); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 0, lap->getConstAccessor().getValue(xyz),0.01);// 2/distance from center + } + + {// inside the masked region + Coord xyz(35,30,30); + + CPPUNIT_ASSERT(maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 2.0/10.0, lap->getConstAccessor().getValue(xyz), 0.01);// 2/distance from center + + } +} diff --git a/openvdb/unittest/TestLeaf.cc b/openvdb/unittest/TestLeaf.cc new file mode 100644 index 00000000..6688c695 --- /dev/null +++ b/openvdb/unittest/TestLeaf.cc @@ -0,0 +1,535 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include // for math::Random01(), math::Pow3() + +class TestLeaf: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestLeaf); + CPPUNIT_TEST(testBuffer); + CPPUNIT_TEST(testGetValue); + CPPUNIT_TEST(testSetValue); + CPPUNIT_TEST(testIsValueSet); + CPPUNIT_TEST(testProbeValue); + CPPUNIT_TEST(testIterators); + CPPUNIT_TEST(testEquivalence); + CPPUNIT_TEST(testGetOrigin); + CPPUNIT_TEST(testIteratorGetCoord); + CPPUNIT_TEST(testNegativeIndexing); + CPPUNIT_TEST(testIsConstant); + CPPUNIT_TEST(testMedian); + CPPUNIT_TEST(testFill); + CPPUNIT_TEST_SUITE_END(); + + void testBuffer(); + void testGetValue(); + void testSetValue(); + void testIsValueSet(); + void testProbeValue(); + void testIterators(); + void testEquivalence(); + void testGetOrigin(); + void testIteratorGetCoord(); + void testNegativeIndexing(); + void testIsConstant(); + void testMedian(); + void testFill(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeaf); + +typedef openvdb::tree::LeafNode LeafType; +typedef LeafType::Buffer BufferType; +using openvdb::Index; + +void +TestLeaf::testBuffer() +{ + {// access + BufferType buf; + + for (Index i = 0; i < BufferType::size(); ++i) { + buf.mData[i] = i; + CPPUNIT_ASSERT(buf[i] == buf.mData[i]); + } + for (Index i = 0; i < BufferType::size(); ++i) { + buf[i] = i; + CPPUNIT_ASSERT_EQUAL(int(i), buf[i]); + } + } + + {// swap + BufferType buf0, buf1, buf2; + + int *buf0Data = buf0.mData; + int *buf1Data = buf1.mData; + + for (Index i = 0; i < BufferType::size(); ++i) { + buf0[i] = i; + buf1[i] = i * 2; + } + + buf0.swap(buf1); + + CPPUNIT_ASSERT(buf0.mData == buf1Data); + CPPUNIT_ASSERT(buf1.mData == buf0Data); + + buf1.swap(buf0); + + CPPUNIT_ASSERT(buf0.mData == buf0Data); + CPPUNIT_ASSERT(buf1.mData == buf1Data); + + buf0.swap(buf2); + + CPPUNIT_ASSERT(buf2.mData == buf0Data); + + buf2.swap(buf0); + + CPPUNIT_ASSERT(buf0.mData == buf0Data); + } + +} + +void +TestLeaf::testGetValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + + leaf.mBuffer[0] = 2; + leaf.mBuffer[1] = 3; + leaf.mBuffer[2] = 4; + leaf.mBuffer[65] = 10; + + CPPUNIT_ASSERT_EQUAL(2, leaf.getValue(openvdb::Coord(0, 0, 0))); + CPPUNIT_ASSERT_EQUAL(3, leaf.getValue(openvdb::Coord(0, 0, 1))); + CPPUNIT_ASSERT_EQUAL(4, leaf.getValue(openvdb::Coord(0, 0, 2))); + + CPPUNIT_ASSERT_EQUAL(10, leaf.getValue(openvdb::Coord(1, 0, 1))); +} + +void +TestLeaf::testSetValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0), 3); + + openvdb::Coord xyz(0, 0, 0); + leaf.setValueOn(xyz, 10); + CPPUNIT_ASSERT_EQUAL(10, leaf.getValue(xyz)); + + xyz.reset(7, 7, 7); + leaf.setValueOn(xyz, 7); + CPPUNIT_ASSERT_EQUAL(7, leaf.getValue(xyz)); + leaf.setValueOnly(xyz, 10); + CPPUNIT_ASSERT_EQUAL(10, leaf.getValue(xyz)); + + xyz.reset(2, 3, 6); + leaf.setValueOn(xyz, 236); + CPPUNIT_ASSERT_EQUAL(236, leaf.getValue(xyz)); + + leaf.setValueOff(xyz, 1); + CPPUNIT_ASSERT_EQUAL(1, leaf.getValue(xyz)); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); +} + +void +TestLeaf::testIsValueSet() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 5, 7), 10); + + CPPUNIT_ASSERT(leaf.isValueOn(openvdb::Coord(1, 5, 7))); + + CPPUNIT_ASSERT(!leaf.isValueOn(openvdb::Coord(0, 5, 7))); + CPPUNIT_ASSERT(!leaf.isValueOn(openvdb::Coord(1, 6, 7))); + CPPUNIT_ASSERT(!leaf.isValueOn(openvdb::Coord(0, 5, 6))); +} + +void +TestLeaf::testProbeValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 6, 5), 10); + + LeafType::ValueType val; + CPPUNIT_ASSERT(leaf.probeValue(openvdb::Coord(1, 6, 5), val)); + CPPUNIT_ASSERT(!leaf.probeValue(openvdb::Coord(1, 6, 4), val)); +} + +void +TestLeaf::testIterators() +{ + LeafType leaf(openvdb::Coord(0, 0, 0), 2); + leaf.setValueOn(openvdb::Coord(1, 2, 3), -3); + leaf.setValueOn(openvdb::Coord(5, 2, 3), 4); + LeafType::ValueType sum = 0; + for (LeafType::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) sum += *iter; + CPPUNIT_ASSERT_EQUAL((-3 + 4), sum); +} + +void +TestLeaf::testEquivalence() +{ + LeafType leaf( openvdb::Coord(0, 0, 0), 2); + LeafType leaf2(openvdb::Coord(0, 0, 0), 3); + + CPPUNIT_ASSERT(leaf != leaf2); + + for(openvdb::Index32 i = 0; i < LeafType::size(); ++i) { + leaf.setValueOnly(i, i); + leaf2.setValueOnly(i, i); + } + CPPUNIT_ASSERT(leaf == leaf2); + + // set some values. + leaf.setValueOn(openvdb::Coord(0, 0, 0), 1); + leaf.setValueOn(openvdb::Coord(0, 1, 0), 1); + leaf.setValueOn(openvdb::Coord(1, 1, 0), 1); + leaf.setValueOn(openvdb::Coord(1, 1, 2), 1); + + leaf2.setValueOn(openvdb::Coord(0, 0, 0), 1); + leaf2.setValueOn(openvdb::Coord(0, 1, 0), 1); + leaf2.setValueOn(openvdb::Coord(1, 1, 0), 1); + leaf2.setValueOn(openvdb::Coord(1, 1, 2), 1); + + CPPUNIT_ASSERT(leaf == leaf2); + + leaf2.setValueOn(openvdb::Coord(0, 0, 1), 1); + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf2.setValueOff(openvdb::Coord(0, 0, 1), 1); + + CPPUNIT_ASSERT(leaf == leaf2); +} + +void +TestLeaf::testGetOrigin() +{ + { + LeafType leaf(openvdb::Coord(1, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 1, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1024, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(128*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1023, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(127*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(512, 512, 512), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(512, 512, 512), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(2, 52, 515), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 48, 512), leaf.origin()); + } +} + +void +TestLeaf::testIteratorGetCoord() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(8, 8, 0), 2); + + CPPUNIT_ASSERT_EQUAL(Coord(8, 8, 0), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3), -3); + leaf.setValueOn(Coord(5, 2, 3), 4); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(9, 10, 3), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(13, 10, 3), xyz); +} + +void +TestLeaf::testNegativeIndexing() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(-9, -2, -8), 1); + + CPPUNIT_ASSERT_EQUAL(Coord(-16, -8, -8), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3), -3); + leaf.setValueOn(Coord(5, 2, 3), 4); + + CPPUNIT_ASSERT_EQUAL(-3, leaf.getValue(Coord(1, 2, 3))); + CPPUNIT_ASSERT_EQUAL(4, leaf.getValue(Coord(5, 2, 3))); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-15, -6, -5), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-11, -6, -5), xyz); +} + +void +TestLeaf::testIsConstant() +{ + using namespace openvdb; + const Coord origin(-9, -2, -8); + + {// check old version (v3.0 and older) with float + // Acceptable range: first-value +/- tolerance + const float val = 1.0f, tol = 0.01f; + tree::LeafNode leaf(origin, val, true); + float v = 0.0f; + bool stat = false; + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val, v); + + leaf.setValueOff(0); + CPPUNIT_ASSERT(!leaf.isConstant(v, stat, tol)); + + leaf.setValueOn(0); + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + + leaf.setValueOn(0, val + 0.99f*tol); + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val + 0.99f*tol, v); + + leaf.setValueOn(0, val + 1.01f*tol); + CPPUNIT_ASSERT(!leaf.isConstant(v, stat, tol)); + } + {// check old version (v3.0 and older) with double + // Acceptable range: first-value +/- tolerance + const double val = 1.0, tol = 0.00001; + tree::LeafNode leaf(origin, val, true); + double v = 0.0; + bool stat = false; + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val, v); + + leaf.setValueOff(0); + CPPUNIT_ASSERT(!leaf.isConstant(v, stat, tol)); + + leaf.setValueOn(0); + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + + leaf.setValueOn(0, val + 0.99*tol); + CPPUNIT_ASSERT(leaf.isConstant(v, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val + 0.99*tol, v); + + leaf.setValueOn(0, val + 1.01*tol); + CPPUNIT_ASSERT(!leaf.isConstant(v, stat, tol)); + } + {// check newer version (v3.2 and newer) with float + // Acceptable range: max - min <= tolerance + const float val = 1.0, tol = 0.01f; + tree::LeafNode leaf(origin, val, true); + float vmin = 0.0f, vmax = 0.0f; + bool stat = false; + + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val, vmin); + CPPUNIT_ASSERT_EQUAL(val, vmax); + + leaf.setValueOff(0); + CPPUNIT_ASSERT(!leaf.isConstant(vmin, vmax, stat, tol)); + + leaf.setValueOn(0); + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + + leaf.setValueOn(0, val + tol); + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + CPPUNIT_ASSERT_EQUAL(val, vmin); + CPPUNIT_ASSERT_EQUAL(val + tol, vmax); + + leaf.setValueOn(0, val + 1.01f*tol); + CPPUNIT_ASSERT(!leaf.isConstant(vmin, vmax, stat, tol)); + } + {// check newer version (v3.2 and newer) with double + // Acceptable range: (max- min) <= tolerance + const double val = 1.0, tol = 0.000001; + tree::LeafNode leaf(origin, val, true); + double vmin = 0.0, vmax = 0.0; + bool stat = false; + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT_EQUAL(val, vmin); + CPPUNIT_ASSERT_EQUAL(val, vmax); + + leaf.setValueOff(0); + CPPUNIT_ASSERT(!leaf.isConstant(vmin, vmax, stat, tol)); + + leaf.setValueOn(0); + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + + leaf.setValueOn(0, val + tol); + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + CPPUNIT_ASSERT_EQUAL(val, vmin); + CPPUNIT_ASSERT_EQUAL(val + tol, vmax); + + leaf.setValueOn(0, val + 1.01*tol); + CPPUNIT_ASSERT(!leaf.isConstant(vmin, vmax, stat, tol)); + } + {// check newer version (v3.2 and newer) with float and random values + typedef tree::LeafNode LeafNodeT; + const float val = 1.0, tol = 1.0f; + LeafNodeT leaf(origin, val, true); + float min = 2.0f, max = -min; + math::Random01 r(145);// random values in the range [0,1] + for (Index i=0; i max) max = v; + leaf.setValueOnly(i, v); + } + float vmin = 0.0f, vmax = 0.0f; + bool stat = false; + CPPUNIT_ASSERT(leaf.isConstant(vmin, vmax, stat, tol)); + CPPUNIT_ASSERT(stat); + CPPUNIT_ASSERT(math::isApproxEqual(min, vmin)); + CPPUNIT_ASSERT(math::isApproxEqual(max, vmax)); + } +} + +void +TestLeaf::testMedian() +{ + using namespace openvdb; + const Coord origin(-9, -2, -8); + std::vector v{5, 6, 4, 3, 2, 6, 7, 9, 3}; + tree::LeafNode leaf(origin, 1.0f, false); + + float val = 0.0f; + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(0.0f, val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(0,0,0), v[0]); + CPPUNIT_ASSERT_EQUAL(Index(1), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-1, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(0,0,1), v[1]); + CPPUNIT_ASSERT_EQUAL(Index(2), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-2, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(0,2,1), v[2]); + CPPUNIT_ASSERT_EQUAL(Index(3), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-3, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(1,2,1), v[3]); + CPPUNIT_ASSERT_EQUAL(Index(4), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[2], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-4, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(1,2,3), v[4]); + CPPUNIT_ASSERT_EQUAL(Index(5), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[2], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-5, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(2,2,1), v[5]); + CPPUNIT_ASSERT_EQUAL(Index(6), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[2], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-6, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(2,4,1), v[6]); + CPPUNIT_ASSERT_EQUAL(Index(7), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-7, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(2,6,1), v[7]); + CPPUNIT_ASSERT_EQUAL(Index(8), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-8, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.setValue(Coord(7,2,1), v[8]); + CPPUNIT_ASSERT_EQUAL(Index(9), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(v[0], val); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-9, leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(1.0f, val); + CPPUNIT_ASSERT_EQUAL(1.0f, leaf.medianAll()); + + leaf.fill(2.0f, true); + + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOn(val)); + CPPUNIT_ASSERT_EQUAL(2.0f, val); + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOff(val)); + CPPUNIT_ASSERT_EQUAL(2.0f, val); + CPPUNIT_ASSERT_EQUAL(2.0f, leaf.medianAll()); +} + +void +TestLeaf::testFill() +{ + using namespace openvdb; + const Coord origin(-9, -2, -8); + + const float bg = 0.0f, fg = 1.0f; + tree::LeafNode leaf(origin, bg, false); + + const int bboxDim = 1 + int(leaf.dim() >> 1); + auto bbox = CoordBBox::createCube(leaf.origin(), bboxDim); + CPPUNIT_ASSERT_EQUAL(math::Pow3(bboxDim), int(bbox.volume())); + + bbox = leaf.getNodeBoundingBox(); + leaf.fill(bbox, bg, false); + CPPUNIT_ASSERT(leaf.isEmpty()); + leaf.fill(bbox, fg, true); + CPPUNIT_ASSERT(leaf.isDense()); + + leaf.fill(bbox, bg, false); + CPPUNIT_ASSERT(leaf.isEmpty()); + + // Fill a region that is larger than the node but that doesn't completely enclose it. + bbox.max() = bbox.min() + (bbox.dim() >> 1); + bbox.expand(bbox.min() - Coord{10}); + leaf.fill(bbox, fg, true); + + // Verify that fill() correctly clips the fill region to the node. + auto clippedBBox = leaf.getNodeBoundingBox(); + clippedBBox.intersect(bbox); + CPPUNIT_ASSERT_EQUAL(int(clippedBBox.volume()), int(leaf.onVoxelCount())); +} diff --git a/openvdb/unittest/TestLeafBool.cc b/openvdb/unittest/TestLeafBool.cc new file mode 100644 index 00000000..d5cb45ed --- /dev/null +++ b/openvdb/unittest/TestLeafBool.cc @@ -0,0 +1,606 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() + + +class TestLeafBool: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestLeafBool); + CPPUNIT_TEST(testGetValue); + CPPUNIT_TEST(testSetValue); + CPPUNIT_TEST(testProbeValue); + CPPUNIT_TEST(testIterators); + CPPUNIT_TEST(testIteratorGetCoord); + CPPUNIT_TEST(testEquivalence); + CPPUNIT_TEST(testGetOrigin); + CPPUNIT_TEST(testNegativeIndexing); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testTopologyCopy); + CPPUNIT_TEST(testMerge); + CPPUNIT_TEST(testCombine); + CPPUNIT_TEST(testBoolTree); + CPPUNIT_TEST(testMedian); + //CPPUNIT_TEST(testFilter); + CPPUNIT_TEST_SUITE_END(); + + void testGetValue(); + void testSetValue(); + void testProbeValue(); + void testIterators(); + void testEquivalence(); + void testGetOrigin(); + void testIteratorGetCoord(); + void testNegativeIndexing(); + void testIO(); + void testTopologyCopy(); + void testMerge(); + void testCombine(); + void testBoolTree(); + void testMedian(); + //void testFilter(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafBool); + +typedef openvdb::tree::LeafNode LeafType; + + +//////////////////////////////////////// + + +void +TestLeafBool::testGetValue() +{ + { + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/false); + for (openvdb::Index n = 0; n < leaf.numValues(); ++n) { + CPPUNIT_ASSERT_EQUAL(false, leaf.getValue(leaf.offsetToLocalCoord(n))); + } + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/true); + for (openvdb::Index n = 0; n < leaf.numValues(); ++n) { + CPPUNIT_ASSERT_EQUAL(true, leaf.getValue(leaf.offsetToLocalCoord(n))); + } + } + {// test Buffer::data() + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/false); + leaf.fill(true); + LeafType::Buffer::WordType* w = leaf.buffer().data(); + for (openvdb::Index n = 0; n < LeafType::Buffer::WORD_COUNT; ++n) { + CPPUNIT_ASSERT_EQUAL(~LeafType::Buffer::WordType(0), w[n]); + } + } + {// test const Buffer::data() + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/false); + leaf.fill(true); + const LeafType& cleaf = leaf; + const LeafType::Buffer::WordType* w = cleaf.buffer().data(); + for (openvdb::Index n = 0; n < LeafType::Buffer::WORD_COUNT; ++n) { + CPPUNIT_ASSERT_EQUAL(~LeafType::Buffer::WordType(0), w[n]); + } + } +} + + +void +TestLeafBool::testSetValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0), false); + + openvdb::Coord xyz(0, 0, 0); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + + xyz.reset(7, 7, 7); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + leaf.setValueOn(xyz, /*value=*/true); // value argument should be ignored + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + leaf.setValueOn(xyz, /*value=*/false); // value argument should be ignored + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + + leaf.setValueOff(xyz); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + + xyz.reset(2, 3, 6); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + + leaf.setValueOff(xyz); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); +} + + +void +TestLeafBool::testProbeValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 6, 5)); + + bool val; + CPPUNIT_ASSERT(leaf.probeValue(openvdb::Coord(1, 6, 5), val)); + CPPUNIT_ASSERT(!leaf.probeValue(openvdb::Coord(1, 6, 4), val)); +} + + +void +TestLeafBool::testIterators() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 2, 3)); + leaf.setValueOn(openvdb::Coord(5, 2, 3)); + openvdb::Coord sum; + for (LeafType::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + sum += iter.getCoord(); + } + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(1 + 5, 2 + 2, 3 + 3), sum); + + openvdb::Index count = 0; + for (LeafType::ValueOffIter iter = leaf.beginValueOff(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues() - 2, count); + + count = 0; + for (LeafType::ValueAllIter iter = leaf.beginValueAll(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), count); + + count = 0; + for (LeafType::ChildOnIter iter = leaf.beginChildOn(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), count); + + count = 0; + for (LeafType::ChildOffIter iter = leaf.beginChildOff(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), count); + + count = 0; + for (LeafType::ChildAllIter iter = leaf.beginChildAll(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), count); +} + + +void +TestLeafBool::testIteratorGetCoord() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(8, 8, 0)); + + CPPUNIT_ASSERT_EQUAL(Coord(8, 8, 0), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3), -3); + leaf.setValueOn(Coord(5, 2, 3), 4); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(9, 10, 3), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(13, 10, 3), xyz); +} + + +void +TestLeafBool::testEquivalence() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + { + LeafType leaf(Coord(0, 0, 0), false); // false and inactive + LeafType leaf2(Coord(0, 0, 0), true); // true and inactive + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf.fill(CoordBBox(Coord(0), Coord(LeafType::DIM - 1)), true, /*active=*/false); + CPPUNIT_ASSERT(leaf == leaf2); // true and inactive + + leaf.setValuesOn(); // true and active + + leaf2.fill(CoordBBox(Coord(0), Coord(LeafType::DIM - 1)), false); // false and active + CPPUNIT_ASSERT(leaf != leaf2); + + leaf.negate(); // false and active + CPPUNIT_ASSERT(leaf == leaf2); + + // Set some values. + leaf.setValueOn(Coord(0, 0, 0), true); + leaf.setValueOn(Coord(0, 1, 0), true); + leaf.setValueOn(Coord(1, 1, 0), true); + leaf.setValueOn(Coord(1, 1, 2), true); + + leaf2.setValueOn(Coord(0, 0, 0), true); + leaf2.setValueOn(Coord(0, 1, 0), true); + leaf2.setValueOn(Coord(1, 1, 0), true); + leaf2.setValueOn(Coord(1, 1, 2), true); + + CPPUNIT_ASSERT(leaf == leaf2); + + leaf2.setValueOn(Coord(0, 0, 1), true); + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf2.setValueOff(Coord(0, 0, 1), false); + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf2.setValueOn(Coord(0, 0, 1)); + + CPPUNIT_ASSERT(leaf == leaf2); + } + {// test LeafNode::operator==() + LeafType leaf1(Coord(0 , 0, 0), true); // true and inactive + LeafType leaf2(Coord(1 , 0, 0), true); // true and inactive + LeafType leaf3(Coord(LeafType::DIM, 0, 0), true); // true and inactive + LeafType leaf4(Coord(0 , 0, 0), true, true);//true and active + CPPUNIT_ASSERT(leaf1 == leaf2); + CPPUNIT_ASSERT(leaf1 != leaf3); + CPPUNIT_ASSERT(leaf2 != leaf3); + CPPUNIT_ASSERT(leaf1 != leaf4); + CPPUNIT_ASSERT(leaf2 != leaf4); + CPPUNIT_ASSERT(leaf3 != leaf4); + } + +} + + +void +TestLeafBool::testGetOrigin() +{ + { + LeafType leaf(openvdb::Coord(1, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 1, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1024, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(128*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1023, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(127*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(512, 512, 512), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(512, 512, 512), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(2, 52, 515), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 48, 512), leaf.origin()); + } +} + + +void +TestLeafBool::testNegativeIndexing() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(-9, -2, -8)); + + CPPUNIT_ASSERT_EQUAL(Coord(-16, -8, -8), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3)); + leaf.setValueOn(Coord(5, 2, 3)); + + CPPUNIT_ASSERT(leaf.isValueOn(Coord(1, 2, 3))); + CPPUNIT_ASSERT(leaf.isValueOn(Coord(5, 2, 3))); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-15, -6, -5), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-11, -6, -5), xyz); +} + + +void +TestLeafBool::testIO() +{ + LeafType leaf(openvdb::Coord(1, 3, 5)); + const openvdb::Coord origin = leaf.origin(); + + leaf.setValueOn(openvdb::Coord(0, 1, 0)); + leaf.setValueOn(openvdb::Coord(1, 0, 0)); + + std::ostringstream ostr(std::ios_base::binary); + + leaf.writeBuffers(ostr); + + leaf.setValueOff(openvdb::Coord(0, 1, 0)); + leaf.setValueOn(openvdb::Coord(0, 1, 1)); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(istr); + + leaf.readBuffers(istr); + + CPPUNIT_ASSERT_EQUAL(origin, leaf.origin()); + + CPPUNIT_ASSERT(leaf.isValueOn(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(leaf.isValueOn(openvdb::Coord(1, 0, 0))); + + CPPUNIT_ASSERT(leaf.onVoxelCount() == 2); +} + + +void +TestLeafBool::testTopologyCopy() +{ + using openvdb::Coord; + + // LeafNode having the same Log2Dim as LeafType + typedef LeafType::ValueConverter::Type FloatLeafType; + + FloatLeafType fleaf(Coord(10, 20, 30), /*background=*/-1.0); + std::set coords; + for (openvdb::Index n = 0; n < fleaf.numValues(); n += 10) { + Coord xyz = fleaf.offsetToGlobalCoord(n); + fleaf.setValueOn(xyz, float(n)); + coords.insert(xyz); + } + + LeafType leaf(fleaf, openvdb::TopologyCopy()); + CPPUNIT_ASSERT_EQUAL(fleaf.onVoxelCount(), leaf.onVoxelCount()); + + CPPUNIT_ASSERT(leaf.hasSameTopology(&fleaf)); + + for (LeafType::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + coords.erase(iter.getCoord()); + } + CPPUNIT_ASSERT(coords.empty()); +} + + +void +TestLeafBool::testMerge() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 10) { + leaf.setValueOn(n); + } + CPPUNIT_ASSERT(!leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + bool val = false, active = false; + CPPUNIT_ASSERT(!leaf.isConstant(val, active)); + + LeafType leaf2(leaf); + leaf2.getValueMask().toggle(); + CPPUNIT_ASSERT(!leaf2.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf2.isValueMaskOff()); + val = active = false; + CPPUNIT_ASSERT(!leaf2.isConstant(val, active)); + + leaf.merge(leaf2); + CPPUNIT_ASSERT(leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + val = active = false; + CPPUNIT_ASSERT(leaf.isConstant(val, active)); + CPPUNIT_ASSERT(active); +} + + +void +TestLeafBool::testCombine() +{ + struct Local { + static void op(openvdb::CombineArgs& args) { + args.setResult(false); // result should be ignored + args.setResultIsActive(args.aIsActive() ^ args.bIsActive()); + } + }; + + LeafType leaf(openvdb::Coord(0, 0, 0)); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 10) { + leaf.setValueOn(n); + } + CPPUNIT_ASSERT(!leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + const LeafType::NodeMaskType savedMask = leaf.getValueMask(); + OPENVDB_LOG_DEBUG_RUNTIME(leaf.str()); + + LeafType leaf2(leaf); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 4) { + leaf2.setValueOn(n); + } + CPPUNIT_ASSERT(!leaf2.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf2.isValueMaskOff()); + OPENVDB_LOG_DEBUG_RUNTIME(leaf2.str()); + + leaf.combine(leaf2, Local::op); + OPENVDB_LOG_DEBUG_RUNTIME(leaf.str()); + + CPPUNIT_ASSERT(leaf.getValueMask() == (savedMask ^ leaf2.getValueMask())); +} + + +void +TestLeafBool::testBoolTree() +{ + using namespace openvdb; + +#if 0 + FloatGrid::Ptr inGrid; + FloatTree::Ptr inTree; + { + //io::File vdbFile("/work/rd/fx_tools/vdb_unittest/TestGridCombine::testCsg/large1.vdb2"); + io::File vdbFile("/hosts/whitestar/usr/pic1/VDB/bunny_0256.vdb2"); + vdbFile.open(); + inGrid = gridPtrCast(vdbFile.readGrid("LevelSet")); + CPPUNIT_ASSERT(inGrid.get() != NULL); + inTree = inGrid->treePtr(); + CPPUNIT_ASSERT(inTree.get() != NULL); + } +#else + FloatGrid::Ptr inGrid = FloatGrid::create(); + CPPUNIT_ASSERT(inGrid.get() != NULL); + FloatTree& inTree = inGrid->tree(); + inGrid->setName("LevelSet"); + + unittest_util::makeSphere(/*dim =*/Coord(128), + /*center=*/Vec3f(0, 0, 0), + /*radius=*/5, + *inGrid, unittest_util::SPHERE_DENSE); +#endif + + const Index64 + floatTreeMem = inTree.memUsage(), + floatTreeLeafCount = inTree.leafCount(), + floatTreeVoxelCount = inTree.activeVoxelCount(); + + TreeBase::Ptr outTree(new BoolTree(inTree, false, true, TopologyCopy())); + CPPUNIT_ASSERT(outTree.get() != NULL); + + BoolGrid::Ptr outGrid = BoolGrid::create(*inGrid); // copy transform and metadata + outGrid->setTree(outTree); + outGrid->setName("Boolean"); + + const Index64 + boolTreeMem = outTree->memUsage(), + boolTreeLeafCount = outTree->leafCount(), + boolTreeVoxelCount = outTree->activeVoxelCount(); + +#if 0 + GridPtrVec grids; + grids.push_back(inGrid); + grids.push_back(outGrid); + io::File vdbFile("bool_tree.vdb2"); + vdbFile.write(grids); + vdbFile.close(); +#endif + + CPPUNIT_ASSERT_EQUAL(floatTreeLeafCount, boolTreeLeafCount); + CPPUNIT_ASSERT_EQUAL(floatTreeVoxelCount, boolTreeVoxelCount); + + //std::cerr << "\nboolTree mem=" << boolTreeMem << " bytes" << std::endl; + //std::cerr << "floatTree mem=" << floatTreeMem << " bytes" << std::endl; + + // Considering only voxel buffer memory usage, the BoolTree would be expected + // to use (2 mask bits/voxel / ((32 value bits + 1 mask bit)/voxel)) = ~1/16 + // as much memory as the FloatTree. Considering total memory usage, verify that + // the BoolTree is no more than 1/10 the size of the FloatTree. + CPPUNIT_ASSERT(boolTreeMem * 10 <= floatTreeMem); +} + +void +TestLeafBool::testMedian() +{ + using namespace openvdb; + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/false); + bool state = false; + + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + leaf.setValue(Coord(0,0,0), true); + CPPUNIT_ASSERT_EQUAL(Index(1), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-1, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + leaf.setValue(Coord(0,0,1), true); + CPPUNIT_ASSERT_EQUAL(Index(2), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-2, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + leaf.setValue(Coord(5,0,1), true); + CPPUNIT_ASSERT_EQUAL(Index(3), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-3, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + leaf.fill(false, false); + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + for (Index i=0; itreePtr(); +// CPPUNIT_ASSERT(tree.get() != NULL); +// grid->setName("filtered"); + +// unittest_util::makeSphere(/*dim=*/Coord(32), +// /*ctr=*/Vec3f(0, 0, 0), +// /*radius=*/10, +// *grid, unittest_util::SPHERE_DENSE); + +// BoolTree::Ptr copyOfTree(new BoolTree(*tree)); +// BoolGrid::Ptr copyOfGrid = BoolGrid::create(copyOfTree); +// copyOfGrid->setName("original"); + +// tools::Filter filter(*grid); +// filter.offset(1); + +// #if 0 +// GridPtrVec grids; +// grids.push_back(copyOfGrid); +// grids.push_back(grid); +// io::File vdbFile("TestLeafBool::testFilter.vdb2"); +// vdbFile.write(grids); +// vdbFile.close(); +// #endif + +// // Verify that offsetting all active voxels by 1 (true) has no effect, +// // since the active voxels were all true to begin with. +// CPPUNIT_ASSERT(tree->hasSameTopology(*copyOfTree)); +// } diff --git a/openvdb/unittest/TestLeafIO.cc b/openvdb/unittest/TestLeafIO.cc new file mode 100644 index 00000000..c9efdcac --- /dev/null +++ b/openvdb/unittest/TestLeafIO.cc @@ -0,0 +1,141 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include // for toupper() +#include +#include + +// CPPUNIT_TEST_SUITE() invokes CPPUNIT_TESTNAMER_DECL() to generate a suite name +// from the FixtureType. But if FixtureType is a templated type, the generated name +// can become long and messy. This macro overrides the normal naming logic, +// instead invoking FixtureType::testSuiteName(), which should be a static member +// function that returns a std::string containing the suite name for the specific +// template instantiation. +#undef CPPUNIT_TESTNAMER_DECL +#define CPPUNIT_TESTNAMER_DECL( variableName, FixtureType ) \ + CPPUNIT_NS::TestNamer variableName( FixtureType::testSuiteName() ) + + +template +class TestLeafIO: public CppUnit::TestCase +{ +public: + static std::string testSuiteName() + { + std::string name = openvdb::typeNameAsString(); + if (!name.empty()) name[0] = static_cast(::toupper(name[0])); + return "TestLeafIO" + name; + } + + CPPUNIT_TEST_SUITE(TestLeafIO); + CPPUNIT_TEST(testBuffer); + CPPUNIT_TEST_SUITE_END(); + + void testBuffer(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafIO); + + +template +void +TestLeafIO::testBuffer() +{ + openvdb::tree::LeafNode leaf(openvdb::Coord(0, 0, 0)); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), T(1)); + leaf.setValueOn(openvdb::Coord(1, 0, 0), T(1)); + + std::ostringstream ostr(std::ios_base::binary); + + leaf.writeBuffers(ostr); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), T(0)); + leaf.setValueOn(openvdb::Coord(0, 1, 1), T(1)); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(istr); + + leaf.readBuffers(istr); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(T(1), leaf.getValue(openvdb::Coord(0, 1, 0)), /*tolerance=*/0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(T(1), leaf.getValue(openvdb::Coord(1, 0, 0)), /*tolerance=*/0); + + CPPUNIT_ASSERT(leaf.onVoxelCount() == 2); +} + + +template<> +void +TestLeafIO::testBuffer() +{ + openvdb::tree::LeafNode + leaf(openvdb::Coord(0, 0, 0), std::string()); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), std::string("test")); + leaf.setValueOn(openvdb::Coord(1, 0, 0), std::string("test")); + + std::ostringstream ostr(std::ios_base::binary); + + leaf.writeBuffers(ostr); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), std::string("douche")); + leaf.setValueOn(openvdb::Coord(0, 1, 1), std::string("douche")); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(istr); + + leaf.readBuffers(istr); + + CPPUNIT_ASSERT_EQUAL(std::string("test"), leaf.getValue(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT_EQUAL(std::string("test"), leaf.getValue(openvdb::Coord(1, 0, 0))); + + CPPUNIT_ASSERT(leaf.onVoxelCount() == 2); +} + + +template<> +void +TestLeafIO::testBuffer() +{ + openvdb::tree::LeafNode leaf(openvdb::Coord(0, 0, 0)); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), openvdb::Vec3R(1, 1, 1)); + leaf.setValueOn(openvdb::Coord(1, 0, 0), openvdb::Vec3R(1, 1, 1)); + + std::ostringstream ostr(std::ios_base::binary); + + leaf.writeBuffers(ostr); + + leaf.setValueOn(openvdb::Coord(0, 1, 0), openvdb::Vec3R(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(0, 1, 1), openvdb::Vec3R(1, 1, 1)); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(istr); + + leaf.readBuffers(istr); + + CPPUNIT_ASSERT(leaf.getValue(openvdb::Coord(0, 1, 0)) == openvdb::Vec3R(1, 1, 1)); + CPPUNIT_ASSERT(leaf.getValue(openvdb::Coord(1, 0, 0)) == openvdb::Vec3R(1, 1, 1)); + + CPPUNIT_ASSERT(leaf.onVoxelCount() == 2); +} diff --git a/openvdb/unittest/TestLeafManager.cc b/openvdb/unittest/TestLeafManager.cc new file mode 100644 index 00000000..290df1d6 --- /dev/null +++ b/openvdb/unittest/TestLeafManager.cc @@ -0,0 +1,324 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include + + +class TestLeafManager: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestLeafManager); + CPPUNIT_TEST(testBasics); + CPPUNIT_TEST(testActiveLeafVoxelCount); + CPPUNIT_TEST(testForeach); + CPPUNIT_TEST(testReduce); + CPPUNIT_TEST_SUITE_END(); + + void testBasics(); + void testActiveLeafVoxelCount(); + void testForeach(); + void testReduce(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafManager); + +void +TestLeafManager::testBasics() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Vec3f; + using openvdb::FloatGrid; + using openvdb::FloatTree; + + const Vec3f center(0.35f, 0.35f, 0.35f); + const float radius = 0.15f; + const int dim = 128, half_width = 5; + const float voxel_size = 1.0f/dim; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/half_width*voxel_size); + FloatTree& tree = grid->tree(); + grid->setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/voxel_size)); + + unittest_util::makeSphere( + Coord(dim), center, radius, *grid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + const size_t leafCount = tree.leafCount(); + + //grid->print(std::cout, 3); + {// test with no aux buffers + openvdb::tree::LeafManager r(tree); + CPPUNIT_ASSERT_EQUAL(leafCount, r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBufferCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBuffersPerLeaf()); + size_t n = 0; + for (FloatTree::LeafCIter iter=tree.cbeginLeaf(); iter; ++iter, ++n) { + CPPUNIT_ASSERT(r.leaf(n) == *iter); + CPPUNIT_ASSERT(r.getBuffer(n,0) == iter->buffer()); + } + CPPUNIT_ASSERT_EQUAL(r.leafCount(), n); + CPPUNIT_ASSERT(!r.swapBuffer(0,0)); + + r.rebuildAuxBuffers(2); + + CPPUNIT_ASSERT_EQUAL(leafCount, r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(2), r.auxBuffersPerLeaf()); + CPPUNIT_ASSERT_EQUAL(size_t(2*leafCount),r.auxBufferCount()); + + for (n=0; n r(tree, 2); + CPPUNIT_ASSERT_EQUAL(leafCount, r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(2), r.auxBuffersPerLeaf()); + CPPUNIT_ASSERT_EQUAL(size_t(2*leafCount),r.auxBufferCount()); + size_t n = 0; + for (FloatTree::LeafCIter iter=tree.cbeginLeaf(); iter; ++iter, ++n) { + CPPUNIT_ASSERT(r.leaf(n) == *iter); + CPPUNIT_ASSERT(r.getBuffer(n,0) == iter->buffer()); + + CPPUNIT_ASSERT(r.getBuffer(n,0) == r.getBuffer(n,1)); + CPPUNIT_ASSERT(r.getBuffer(n,1) == r.getBuffer(n,2)); + CPPUNIT_ASSERT(r.getBuffer(n,0) == r.getBuffer(n,2)); + } + CPPUNIT_ASSERT_EQUAL(r.leafCount(), n); + for (n=0; n r(tree); + + for (size_t numAuxBuffers = 0; numAuxBuffers <= 2; ++numAuxBuffers += 2) { + r.rebuildAuxBuffers(numAuxBuffers); + + CPPUNIT_ASSERT_EQUAL(leafCount, r.leafCount()); + CPPUNIT_ASSERT_EQUAL(int(numAuxBuffers * leafCount), int(r.auxBufferCount())); + CPPUNIT_ASSERT_EQUAL(numAuxBuffers, r.auxBuffersPerLeaf()); + + size_t n = 0; + for (FloatTree::LeafCIter iter = tree.cbeginLeaf(); iter; ++iter, ++n) { + CPPUNIT_ASSERT(r.leaf(n) == *iter); + // Verify that each aux buffer was initialized with a copy of the leaf buffer. + for (size_t bufIdx = 0; bufIdx < numAuxBuffers; ++bufIdx) { + CPPUNIT_ASSERT(r.getBuffer(n, bufIdx) == iter->buffer()); + } + } + CPPUNIT_ASSERT_EQUAL(r.leafCount(), n); + + for (size_t i = 0; i < numAuxBuffers; ++i) { + for (size_t j = 0; j < numAuxBuffers; ++j) { + // Verify that swapping buffers with themselves and swapping + // leaf buffers with aux buffers have no effect. + const bool canSwap = (i != j && i != 0 && j != 0); + CPPUNIT_ASSERT_EQUAL(canSwap, r.swapBuffer(i, j)); + } + } + } + } +} + +void +TestLeafManager::testActiveLeafVoxelCount() +{ + using namespace openvdb; + + for (const Int32 dim: { 87, 1023, 1024, 2023 }) { + const CoordBBox denseBBox{Coord{0}, Coord{dim - 1}}; + const auto size = denseBBox.volume(); + + // Create a large dense tree for testing but use a MaskTree to + // minimize the memory overhead + MaskTree tree{false}; + tree.denseFill(denseBBox, true, true); + // Add some tiles, which should not contribute to the leaf voxel count. + tree.addTile(/*level=*/2, Coord{10000}, true, true); + tree.addTile(/*level=*/1, Coord{-10000}, true, true); + tree.addTile(/*level=*/1, Coord{20000}, false, false); + + tree::LeafManager mgr(tree); + + // On a dual CPU Intel(R) Xeon(R) E5-2697 v3 @ 2.60GHz + // the speedup of LeafManager::activeLeafVoxelCount over + // Tree::activeLeafVoxelCount is ~15x (assuming a LeafManager already exists) + //openvdb::util::CpuTimer t("\nTree::activeVoxelCount"); + const auto treeActiveVoxels = tree.activeVoxelCount(); + //t.restart("\nTree::activeLeafVoxelCount"); + const auto treeActiveLeafVoxels = tree.activeLeafVoxelCount(); + //t.restart("\nLeafManager::activeLeafVoxelCount"); + const auto mgrActiveLeafVoxels = mgr.activeLeafVoxelCount();//multi-threaded + //t.stop(); + //std::cerr << "Old1 = " << treeActiveVoxels << " old2 = " << treeActiveLeafVoxels + // << " New = " << mgrActiveLeafVoxels << std::endl; + CPPUNIT_ASSERT(size < treeActiveVoxels); + CPPUNIT_ASSERT_EQUAL(size, treeActiveLeafVoxels); + CPPUNIT_ASSERT_EQUAL(size, mgrActiveLeafVoxels); + } +} + +namespace { + +struct ForeachOp +{ + ForeachOp(float v) : mV(v) {} + template + void operator()(T &leaf, size_t) const + { + for (typename T::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + if ( *iter > mV) iter.setValue( 2.0f ); + } + } + const float mV; +};// ForeachOp + +struct ReduceOp +{ + ReduceOp(float v) : mV(v), mN(0) {} + ReduceOp(const ReduceOp &other) : mV(other.mV), mN(other.mN) {} + ReduceOp(const ReduceOp &other, tbb::split) : mV(other.mV), mN(0) {} + template + void operator()(T &leaf, size_t) + { + for (typename T::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + if ( *iter > mV) ++mN; + } + } + void join(const ReduceOp &other) {mN += other.mN;} + const float mV; + openvdb::Index mN; +};// ReduceOp + +}//unnamed namespace + +void +TestLeafManager::testForeach() +{ + using namespace openvdb; + + FloatTree tree( 0.0f ); + const int dim = int(FloatTree::LeafNodeType::dim()); + const CoordBBox bbox1(Coord(0),Coord(dim-1)); + const CoordBBox bbox2(Coord(dim),Coord(2*dim-1)); + + tree.fill( bbox1, -1.0f); + tree.fill( bbox2, 1.0f); + tree.voxelizeActiveTiles(); + + for (CoordBBox::Iterator iter(bbox1); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( -1.0f, tree.getValue(*iter)); + } + for (CoordBBox::Iterator iter(bbox2); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( 1.0f, tree.getValue(*iter)); + } + + tree::LeafManager r(tree); + CPPUNIT_ASSERT_EQUAL(size_t(2), r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBufferCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBuffersPerLeaf()); + + ForeachOp op(0.0f); + r.foreach(op); + + CPPUNIT_ASSERT_EQUAL(size_t(2), r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBufferCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBuffersPerLeaf()); + + for (CoordBBox::Iterator iter(bbox1); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( -1.0f, tree.getValue(*iter)); + } + for (CoordBBox::Iterator iter(bbox2); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( 2.0f, tree.getValue(*iter)); + } +} + +void +TestLeafManager::testReduce() +{ + using namespace openvdb; + + FloatTree tree( 0.0f ); + const int dim = int(FloatTree::LeafNodeType::dim()); + const CoordBBox bbox1(Coord(0),Coord(dim-1)); + const CoordBBox bbox2(Coord(dim),Coord(2*dim-1)); + + tree.fill( bbox1, -1.0f); + tree.fill( bbox2, 1.0f); + tree.voxelizeActiveTiles(); + + for (CoordBBox::Iterator iter(bbox1); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( -1.0f, tree.getValue(*iter)); + } + for (CoordBBox::Iterator iter(bbox2); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL( 1.0f, tree.getValue(*iter)); + } + + tree::LeafManager r(tree); + CPPUNIT_ASSERT_EQUAL(size_t(2), r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBufferCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBuffersPerLeaf()); + + ReduceOp op(0.0f); + r.reduce(op); + CPPUNIT_ASSERT_EQUAL(FloatTree::LeafNodeType::numValues(), op.mN); + + CPPUNIT_ASSERT_EQUAL(size_t(2), r.leafCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBufferCount()); + CPPUNIT_ASSERT_EQUAL(size_t(0), r.auxBuffersPerLeaf()); + + Index n = 0; + for (CoordBBox::Iterator iter(bbox1); iter; ++iter) { + ++n; + CPPUNIT_ASSERT_EQUAL( -1.0f, tree.getValue(*iter)); + } + CPPUNIT_ASSERT_EQUAL(FloatTree::LeafNodeType::numValues(), n); + + n = 0; + for (CoordBBox::Iterator iter(bbox2); iter; ++iter) { + ++n; + CPPUNIT_ASSERT_EQUAL( 1.0f, tree.getValue(*iter)); + } + CPPUNIT_ASSERT_EQUAL(FloatTree::LeafNodeType::numValues(), n); +} diff --git a/openvdb/unittest/TestLeafMask.cc b/openvdb/unittest/TestLeafMask.cc new file mode 100644 index 00000000..47cb173b --- /dev/null +++ b/openvdb/unittest/TestLeafMask.cc @@ -0,0 +1,613 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() + + +class TestLeafMask: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestLeafMask); + CPPUNIT_TEST(testGetValue); + CPPUNIT_TEST(testSetValue); + CPPUNIT_TEST(testProbeValue); + CPPUNIT_TEST(testIterators); + CPPUNIT_TEST(testIteratorGetCoord); + CPPUNIT_TEST(testEquivalence); + CPPUNIT_TEST(testGetOrigin); + CPPUNIT_TEST(testNegativeIndexing); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testTopologyCopy); + CPPUNIT_TEST(testMerge); + CPPUNIT_TEST(testCombine); + CPPUNIT_TEST(testMedian); + CPPUNIT_TEST(testTopologyTree); + //CPPUNIT_TEST(testFilter); + CPPUNIT_TEST_SUITE_END(); + + void testGetValue(); + void testSetValue(); + void testProbeValue(); + void testIterators(); + void testEquivalence(); + void testGetOrigin(); + void testIteratorGetCoord(); + void testNegativeIndexing(); + void testIO(); + void testTopologyCopy(); + void testMerge(); + void testCombine(); + void testMedian(); + void testTopologyTree(); + //void testFilter(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafMask); + +typedef openvdb::tree::LeafNode LeafType; + + +//////////////////////////////////////// + + +void +TestLeafMask::testGetValue() +{ + { + LeafType leaf1(openvdb::Coord(0, 0, 0)); + openvdb::tree::LeafNode leaf2(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT( leaf1.memUsage() < leaf2.memUsage() ); + //std::cerr << "\nLeafNode uses " << leaf1.memUsage() << " bytes" << std::endl; + //std::cerr << "LeafNode uses " << leaf2.memUsage() << " bytes" << std::endl; + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), false); + for (openvdb::Index n = 0; n < leaf.numValues(); ++n) { + CPPUNIT_ASSERT_EQUAL(false, leaf.getValue(leaf.offsetToLocalCoord(n))); + } + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), true); + for (openvdb::Index n = 0; n < leaf.numValues(); ++n) { + CPPUNIT_ASSERT_EQUAL(true, leaf.getValue(leaf.offsetToLocalCoord(n))); + } + } + {// test Buffer::data() + LeafType leaf(openvdb::Coord(0, 0, 0), false); + leaf.fill(true); + LeafType::Buffer::WordType* w = leaf.buffer().data(); + for (openvdb::Index n = 0; n < LeafType::Buffer::WORD_COUNT; ++n) { + CPPUNIT_ASSERT_EQUAL(~LeafType::Buffer::WordType(0), w[n]); + } + } + {// test const Buffer::data() + LeafType leaf(openvdb::Coord(0, 0, 0), false); + leaf.fill(true); + const LeafType& cleaf = leaf; + const LeafType::Buffer::WordType* w = cleaf.buffer().data(); + for (openvdb::Index n = 0; n < LeafType::Buffer::WORD_COUNT; ++n) { + CPPUNIT_ASSERT_EQUAL(~LeafType::Buffer::WordType(0), w[n]); + } + } +} + + +void +TestLeafMask::testSetValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0), false); + + openvdb::Coord xyz(0, 0, 0); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + + xyz.reset(7, 7, 7); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + leaf.setValueOn(xyz, true); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + leaf.setValueOn(xyz, false); // value and state are the same! + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + + leaf.setValueOff(xyz); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); + + xyz.reset(2, 3, 6); + leaf.setValueOn(xyz); + CPPUNIT_ASSERT(leaf.isValueOn(xyz)); + + leaf.setValueOff(xyz); + CPPUNIT_ASSERT(!leaf.isValueOn(xyz)); +} + +void +TestLeafMask::testProbeValue() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 6, 5)); + + bool val; + CPPUNIT_ASSERT(leaf.probeValue(openvdb::Coord(1, 6, 5), val)); + CPPUNIT_ASSERT(!leaf.probeValue(openvdb::Coord(1, 6, 4), val)); +} + + +void +TestLeafMask::testIterators() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.setValueOn(openvdb::Coord(1, 2, 3)); + leaf.setValueOn(openvdb::Coord(5, 2, 3)); + openvdb::Coord sum; + for (LeafType::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + sum += iter.getCoord(); + } + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(1 + 5, 2 + 2, 3 + 3), sum); + + openvdb::Index count = 0; + for (LeafType::ValueOffIter iter = leaf.beginValueOff(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues() - 2, count); + + count = 0; + for (LeafType::ValueAllIter iter = leaf.beginValueAll(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), count); + + count = 0; + for (LeafType::ChildOnIter iter = leaf.beginChildOn(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), count); + + count = 0; + for (LeafType::ChildOffIter iter = leaf.beginChildOff(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), count); + + count = 0; + for (LeafType::ChildAllIter iter = leaf.beginChildAll(); iter; ++iter, ++count); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), count); +} + + +void +TestLeafMask::testIteratorGetCoord() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(8, 8, 0)); + + CPPUNIT_ASSERT_EQUAL(Coord(8, 8, 0), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3), -3); + leaf.setValueOn(Coord(5, 2, 3), 4); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(9, 10, 3), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(13, 10, 3), xyz); +} + + +void +TestLeafMask::testEquivalence() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + { + LeafType leaf(Coord(0, 0, 0), false); // false and inactive + LeafType leaf2(Coord(0, 0, 0), true); // true and inactive + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf.fill(CoordBBox(Coord(0), Coord(LeafType::DIM - 1)), true, false); + CPPUNIT_ASSERT(leaf == leaf2); // true and inactive + + leaf.setValuesOn(); // true and active + + leaf2.fill(CoordBBox(Coord(0), Coord(LeafType::DIM - 1)), false); // false and active + CPPUNIT_ASSERT(leaf != leaf2); + + leaf.negate(); // false and active + CPPUNIT_ASSERT(leaf == leaf2); + + // Set some values. + leaf.setValueOn(Coord(0, 0, 0), true); + leaf.setValueOn(Coord(0, 1, 0), true); + leaf.setValueOn(Coord(1, 1, 0), true); + leaf.setValueOn(Coord(1, 1, 2), true); + + leaf2.setValueOn(Coord(0, 0, 0), true); + leaf2.setValueOn(Coord(0, 1, 0), true); + leaf2.setValueOn(Coord(1, 1, 0), true); + leaf2.setValueOn(Coord(1, 1, 2), true); + + CPPUNIT_ASSERT(leaf == leaf2); + + leaf2.setValueOn(Coord(0, 0, 1), true); + + CPPUNIT_ASSERT(leaf != leaf2); + + leaf2.setValueOff(Coord(0, 0, 1), false); + + CPPUNIT_ASSERT(leaf == leaf2);//values and states coinside + + leaf2.setValueOn(Coord(0, 0, 1)); + + CPPUNIT_ASSERT(leaf != leaf2);//values and states coinside + } + {// test LeafNode::operator==() + LeafType leaf1(Coord(0 , 0, 0), true); // true and inactive + LeafType leaf2(Coord(1 , 0, 0), true); // true and inactive + LeafType leaf3(Coord(LeafType::DIM, 0, 0), true); // true and inactive + LeafType leaf4(Coord(0 , 0, 0), true, true);//true and active + CPPUNIT_ASSERT(leaf1 == leaf2); + CPPUNIT_ASSERT(leaf1 != leaf3); + CPPUNIT_ASSERT(leaf2 != leaf3); + CPPUNIT_ASSERT(leaf1 == leaf4); + CPPUNIT_ASSERT(leaf2 == leaf4); + CPPUNIT_ASSERT(leaf3 != leaf4); + } + +} + + +void +TestLeafMask::testGetOrigin() +{ + { + LeafType leaf(openvdb::Coord(1, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(0, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 0, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(8, 1, 0), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1024, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(128*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(1023, 1, 3), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(127*8, 0, 0), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(512, 512, 512), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(512, 512, 512), leaf.origin()); + } + { + LeafType leaf(openvdb::Coord(2, 52, 515), 1); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0, 48, 512), leaf.origin()); + } +} + + +void +TestLeafMask::testNegativeIndexing() +{ + using namespace openvdb; + + LeafType leaf(openvdb::Coord(-9, -2, -8)); + + CPPUNIT_ASSERT_EQUAL(Coord(-16, -8, -8), leaf.origin()); + + leaf.setValueOn(Coord(1, 2, 3)); + leaf.setValueOn(Coord(5, 2, 3)); + + CPPUNIT_ASSERT(leaf.isValueOn(Coord(1, 2, 3))); + CPPUNIT_ASSERT(leaf.isValueOn(Coord(5, 2, 3))); + + LeafType::ValueOnIter iter = leaf.beginValueOn(); + Coord xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-15, -6, -5), xyz); + + ++iter; + xyz = iter.getCoord(); + CPPUNIT_ASSERT_EQUAL(Coord(-11, -6, -5), xyz); +} + + +void +TestLeafMask::testIO() +{ + LeafType leaf(openvdb::Coord(1, 3, 5)); + const openvdb::Coord origin = leaf.origin(); + + leaf.setValueOn(openvdb::Coord(0, 1, 0)); + leaf.setValueOn(openvdb::Coord(1, 0, 0)); + + std::ostringstream ostr(std::ios_base::binary); + + leaf.writeBuffers(ostr); + + leaf.setValueOff(openvdb::Coord(0, 1, 0)); + leaf.setValueOn(openvdb::Coord(0, 1, 1)); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(istr); + + leaf.readBuffers(istr); + + CPPUNIT_ASSERT_EQUAL(origin, leaf.origin()); + + CPPUNIT_ASSERT(leaf.isValueOn(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(leaf.isValueOn(openvdb::Coord(1, 0, 0))); + + CPPUNIT_ASSERT(leaf.onVoxelCount() == 2); +} + + +void +TestLeafMask::testTopologyCopy() +{ + using openvdb::Coord; + + // LeafNode having the same Log2Dim as LeafType + typedef LeafType::ValueConverter::Type FloatLeafType; + + FloatLeafType fleaf(Coord(10, 20, 30), -1.0); + std::set coords; + for (openvdb::Index n = 0; n < fleaf.numValues(); n += 10) { + Coord xyz = fleaf.offsetToGlobalCoord(n); + fleaf.setValueOn(xyz, float(n)); + coords.insert(xyz); + } + + LeafType leaf(fleaf, openvdb::TopologyCopy()); + CPPUNIT_ASSERT_EQUAL(fleaf.onVoxelCount(), leaf.onVoxelCount()); + + CPPUNIT_ASSERT(leaf.hasSameTopology(&fleaf)); + + for (LeafType::ValueOnIter iter = leaf.beginValueOn(); iter; ++iter) { + coords.erase(iter.getCoord()); + } + CPPUNIT_ASSERT(coords.empty()); +} + + +void +TestLeafMask::testMerge() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 10) { + leaf.setValueOn(n); + } + CPPUNIT_ASSERT(!leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + bool val = false, active = false; + CPPUNIT_ASSERT(!leaf.isConstant(val, active)); + + LeafType leaf2(leaf); + leaf2.getValueMask().toggle(); + CPPUNIT_ASSERT(!leaf2.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf2.isValueMaskOff()); + val = active = false; + CPPUNIT_ASSERT(!leaf2.isConstant(val, active)); + + leaf.merge(leaf2); + CPPUNIT_ASSERT(leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + val = active = false; + CPPUNIT_ASSERT(leaf.isConstant(val, active)); + CPPUNIT_ASSERT(active); +} + + +void +TestLeafMask::testCombine() +{ + struct Local { + static void op(openvdb::CombineArgs& args) { + args.setResult(args.aIsActive() ^ args.bIsActive());// state = value + } + }; + + LeafType leaf(openvdb::Coord(0, 0, 0)); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 10) leaf.setValueOn(n); + CPPUNIT_ASSERT(!leaf.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf.isValueMaskOff()); + const LeafType::NodeMaskType savedMask = leaf.getValueMask(); + OPENVDB_LOG_DEBUG_RUNTIME(leaf.str()); + + LeafType leaf2(leaf); + for (openvdb::Index n = 0; n < leaf.numValues(); n += 4) leaf2.setValueOn(n); + + CPPUNIT_ASSERT(!leaf2.isValueMaskOn()); + CPPUNIT_ASSERT(!leaf2.isValueMaskOff()); + OPENVDB_LOG_DEBUG_RUNTIME(leaf2.str()); + + leaf.combine(leaf2, Local::op); + OPENVDB_LOG_DEBUG_RUNTIME(leaf.str()); + + CPPUNIT_ASSERT(leaf.getValueMask() == (savedMask ^ leaf2.getValueMask())); +} + + +void +TestLeafMask::testTopologyTree() +{ + using namespace openvdb; + +#if 0 + FloatGrid::Ptr inGrid; + FloatTree::Ptr inTree; + { + //io::File vdbFile("/work/rd/fx_tools/vdb_unittest/TestGridCombine::testCsg/large1.vdb2"); + io::File vdbFile("/hosts/whitestar/usr/pic1/VDB/bunny_0256.vdb2"); + vdbFile.open(); + inGrid = gridPtrCast(vdbFile.readGrid("LevelSet")); + CPPUNIT_ASSERT(inGrid.get() != NULL); + inTree = inGrid->treePtr(); + CPPUNIT_ASSERT(inTree.get() != NULL); + } +#else + FloatGrid::Ptr inGrid = FloatGrid::create(); + CPPUNIT_ASSERT(inGrid.get() != NULL); + FloatTree& inTree = inGrid->tree(); + inGrid->setName("LevelSet"); + + unittest_util::makeSphere(Coord(128),//dim + Vec3f(0, 0, 0),//center + 5,//radius + *inGrid, unittest_util::SPHERE_DENSE); +#endif + + const Index64 + floatTreeMem = inTree.memUsage(), + floatTreeLeafCount = inTree.leafCount(), + floatTreeVoxelCount = inTree.activeVoxelCount(); + + TreeBase::Ptr outTree(new TopologyTree(inTree, false, true, TopologyCopy())); + CPPUNIT_ASSERT(outTree.get() != NULL); + + TopologyGrid::Ptr outGrid = TopologyGrid::create(*inGrid); // copy transform and metadata + outGrid->setTree(outTree); + outGrid->setName("Boolean"); + + const Index64 + boolTreeMem = outTree->memUsage(), + boolTreeLeafCount = outTree->leafCount(), + boolTreeVoxelCount = outTree->activeVoxelCount(); + +#if 0 + GridPtrVec grids; + grids.push_back(inGrid); + grids.push_back(outGrid); + io::File vdbFile("bool_tree.vdb2"); + vdbFile.write(grids); + vdbFile.close(); +#endif + + CPPUNIT_ASSERT_EQUAL(floatTreeLeafCount, boolTreeLeafCount); + CPPUNIT_ASSERT_EQUAL(floatTreeVoxelCount, boolTreeVoxelCount); + + //std::cerr << "\nboolTree mem=" << boolTreeMem << " bytes" << std::endl; + //std::cerr << "floatTree mem=" << floatTreeMem << " bytes" << std::endl; + + // Considering only voxel buffer memory usage, the BoolTree would be expected + // to use (2 mask bits/voxel / ((32 value bits + 1 mask bit)/voxel)) = ~1/16 + // as much memory as the FloatTree. Considering total memory usage, verify that + // the BoolTree is no more than 1/10 the size of the FloatTree. + CPPUNIT_ASSERT(boolTreeMem * 10 <= floatTreeMem); +} + +void +TestLeafMask::testMedian() +{ + using namespace openvdb; + LeafType leaf(openvdb::Coord(0, 0, 0), /*background=*/false); + bool state = false; + + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == true); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + leaf.setValue(Coord(0,0,0), true); + CPPUNIT_ASSERT_EQUAL(Index(1), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == true); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-1, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + + leaf.setValue(Coord(0,0,1), true); + CPPUNIT_ASSERT_EQUAL(Index(2), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == true); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-2, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + + leaf.setValue(Coord(5,0,1), true); + CPPUNIT_ASSERT_EQUAL(Index(3), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == true); + CPPUNIT_ASSERT_EQUAL(leaf.numValues()-3, leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + + leaf.fill(false, false); + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.medianOn(state)); + CPPUNIT_ASSERT(state == true); + CPPUNIT_ASSERT_EQUAL(leaf.numValues(), leaf.medianOff(state)); + CPPUNIT_ASSERT(state == false); + CPPUNIT_ASSERT(!leaf.medianAll()); + + + for (Index i=0; itreePtr(); +// CPPUNIT_ASSERT(tree.get() != NULL); +// grid->setName("filtered"); + +// unittest_util::makeSphere(Coord(32),// dim +// Vec3f(0, 0, 0),// center +// 10,// radius +// *grid, unittest_util::SPHERE_DENSE); + +// BoolTree::Ptr copyOfTree(new BoolTree(*tree)); +// BoolGrid::Ptr copyOfGrid = BoolGrid::create(copyOfTree); +// copyOfGrid->setName("original"); + +// tools::Filter filter(*grid); +// filter.offset(1); + +// #if 0 +// GridPtrVec grids; +// grids.push_back(copyOfGrid); +// grids.push_back(grid); +// io::File vdbFile("TestLeafMask::testFilter.vdb2"); +// vdbFile.write(grids); +// vdbFile.close(); +// #endif + +// // Verify that offsetting all active voxels by 1 (true) has no effect, +// // since the active voxels were all true to begin with. +// CPPUNIT_ASSERT(tree->hasSameTopology(*copyOfTree)); +// } diff --git a/openvdb/unittest/TestLeafOrigin.cc b/openvdb/unittest/TestLeafOrigin.cc new file mode 100644 index 00000000..a4272960 --- /dev/null +++ b/openvdb/unittest/TestLeafOrigin.cc @@ -0,0 +1,107 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include + + +class TestLeafOrigin: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestLeafOrigin); + CPPUNIT_TEST(test); + CPPUNIT_TEST(test2Values); + CPPUNIT_TEST(testGetValue); + CPPUNIT_TEST_SUITE_END(); + + void test(); + void test2Values(); + void testGetValue(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLeafOrigin); + + +//////////////////////////////////////// + + +void +TestLeafOrigin::test() +{ + using namespace openvdb; + + std::set indices; + indices.insert(Coord( 0, 0, 0)); + indices.insert(Coord( 1, 0, 0)); + indices.insert(Coord( 0, 100, 8)); + indices.insert(Coord(-9, 0, 8)); + indices.insert(Coord(32, 0, 16)); + indices.insert(Coord(33, -5, 16)); + indices.insert(Coord(42, 17, 35)); + indices.insert(Coord(43, 17, 64)); + + FloatTree tree(/*bg=*/256.0); + std::set::iterator iter = indices.begin(); + for ( ; iter != indices.end(); ++iter) tree.setValue(*iter, 1.0); + + for (FloatTree::LeafCIter leafIter = tree.cbeginLeaf(); leafIter; ++leafIter) { + const Int32 mask = ~((1 << leafIter->log2dim()) - 1); + const Coord leafOrigin = leafIter->origin(); + for (FloatTree::LeafNodeType::ValueOnCIter valIter = leafIter->cbeginValueOn(); + valIter; ++valIter) + { + Coord xyz = valIter.getCoord(); + CPPUNIT_ASSERT_EQUAL(leafOrigin, xyz & mask); + + iter = indices.find(xyz); + CPPUNIT_ASSERT(iter != indices.end()); + indices.erase(iter); + } + } + CPPUNIT_ASSERT(indices.empty()); +} + + +void +TestLeafOrigin::test2Values() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*bg=*/1.0f); + FloatTree& tree = grid->tree(); + + tree.setValue(Coord(0, 0, 0), 5); + tree.setValue(Coord(100, 0, 0), 6); + + grid->setTransform(math::Transform::createLinearTransform(0.1)); + + FloatTree::LeafCIter iter = tree.cbeginLeaf(); + CPPUNIT_ASSERT_EQUAL(Coord(0, 0, 0), iter->origin()); + ++iter; + CPPUNIT_ASSERT_EQUAL(Coord(96, 0, 0), iter->origin()); +} + +void +TestLeafOrigin::testGetValue() +{ + const openvdb::Coord c0(0,-10,0), c1(100,13,0); + const float v0=5.0f, v1=6.0f, v2=1.0f; + openvdb::FloatTree::Ptr tree(new openvdb::FloatTree(v2)); + + tree->setValue(c0, v0); + tree->setValue(c1, v1); + + openvdb::FloatTree::LeafCIter iter = tree->cbeginLeaf(); + CPPUNIT_ASSERT_EQUAL(v0, iter->getValue(c0)); + ++iter; + CPPUNIT_ASSERT_EQUAL(v1, iter->getValue(c1)); +} diff --git a/openvdb/unittest/TestLevelSetRayIntersector.cc b/openvdb/unittest/TestLevelSetRayIntersector.cc new file mode 100644 index 00000000..804ab1d8 --- /dev/null +++ b/openvdb/unittest/TestLevelSetRayIntersector.cc @@ -0,0 +1,383 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file unittest/TestLevelSetRayIntersector.cc +/// @author Ken Museth + +// Uncomment to enable statistics of ray-intersections +//#define STATS_TEST + +#include +#include +#include +#include +#include +#include +#include +#include +#include // for Film +#ifdef STATS_TEST +//only needed for statistics +#include +#include +#include +#endif + + +#define ASSERT_DOUBLES_APPROX_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/1.e-6); + + +class TestLevelSetRayIntersector : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestLevelSetRayIntersector); + CPPUNIT_TEST(tests); + +#ifdef STATS_TEST + CPPUNIT_TEST(stats); +#endif + + CPPUNIT_TEST_SUITE_END(); + + void tests(); +#ifdef STATS_TEST + void stats(); +#endif +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLevelSetRayIntersector); + +void +TestLevelSetRayIntersector::tests() +{ + using namespace openvdb; + typedef math::Ray RayT; + typedef RayT::Vec3Type Vec3T; + + {// voxel intersection against a level set sphere + const float r = 5.0f; + const Vec3f c(20.0f, 0.0f, 0.0f); + const float s = 0.5f, w = 2.0f; + + FloatGrid::Ptr ls = tools::createLevelSetSphere(r, c, s, w); + + tools::LevelSetRayIntersector lsri(*ls); + + const Vec3T dir(1.0, 0.0, 0.0); + const Vec3T eye(2.0, 0.0, 0.0); + const RayT ray(eye, dir); + //std::cerr << ray << std::endl; + Vec3T xyz(0); + Real time = 0; + CPPUNIT_ASSERT(lsri.intersectsWS(ray, xyz, time)); + ASSERT_DOUBLES_APPROX_EQUAL(15.0, xyz[0]); + ASSERT_DOUBLES_APPROX_EQUAL( 0.0, xyz[1]); + ASSERT_DOUBLES_APPROX_EQUAL( 0.0, xyz[2]); + ASSERT_DOUBLES_APPROX_EQUAL(13.0, time); + double t0=0, t1=0; + CPPUNIT_ASSERT(ray.intersects(c, r, t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL(t0, time); + //std::cerr << "\nray("< 0.01) { + film.pixel(i, j) = tools::Film::RGBA(1.0f, 0.0f, 0.0f); + } else { + film.pixel(i, j) = tools::Film::RGBA(0.0f, 1.0f, 0.0f); + } + } + } + } + timer.stop(); + + film.savePPM("sphere_serial"); + stats.print("First hit"); + hist.print("First hit"); + } +} +#endif // STATS_TEST + +#undef STATS_TEST diff --git a/openvdb/unittest/TestLevelSetUtil.cc b/openvdb/unittest/TestLevelSetUtil.cc new file mode 100644 index 00000000..d135dab8 --- /dev/null +++ b/openvdb/unittest/TestLevelSetUtil.cc @@ -0,0 +1,242 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include +#include +#include +#include // for createLevelSetBox() +#include // for csgDifference() + +class TestLevelSetUtil: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestLevelSetUtil); + CPPUNIT_TEST(testSDFToFogVolume); + CPPUNIT_TEST(testSDFInteriorMask); + CPPUNIT_TEST(testExtractEnclosedRegion); + CPPUNIT_TEST(testSegmentationTools); + CPPUNIT_TEST_SUITE_END(); + + void testSDFToFogVolume(); + void testSDFInteriorMask(); + void testExtractEnclosedRegion(); + void testSegmentationTools(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLevelSetUtil); + + +//////////////////////////////////////// + +void +TestLevelSetUtil::testSDFToFogVolume() +{ + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(10.0); + + grid->fill(openvdb::CoordBBox(openvdb::Coord(-100), openvdb::Coord(100)), 9.0); + grid->fill(openvdb::CoordBBox(openvdb::Coord(-50), openvdb::Coord(50)), -9.0); + + + openvdb::tools::sdfToFogVolume(*grid); + + CPPUNIT_ASSERT(grid->background() < 1e-7); + + openvdb::FloatGrid::ValueOnIter iter = grid->beginValueOn(); + for (; iter; ++iter) { + CPPUNIT_ASSERT(iter.getValue() > 0.0); + CPPUNIT_ASSERT(std::abs(iter.getValue() - 1.0) < 1e-7); + } +} + + +void +TestLevelSetUtil::testSDFInteriorMask() +{ + typedef openvdb::FloatGrid FloatGrid; + typedef openvdb::BoolGrid BoolGrid; + typedef openvdb::Vec3s Vec3s; + typedef openvdb::math::BBox BBoxs; + typedef openvdb::math::Transform Transform; + + BBoxs bbox(Vec3s(0.0, 0.0, 0.0), Vec3s(1.0, 1.0, 1.0)); + + Transform::Ptr transform = Transform::createLinearTransform(0.1); + + FloatGrid::Ptr sdfGrid = openvdb::tools::createLevelSetBox(bbox, *transform); + + BoolGrid::Ptr maskGrid = openvdb::tools::sdfInteriorMask(*sdfGrid); + + // test inside coord value + openvdb::Coord ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(0.5, 0.5, 0.5)); + CPPUNIT_ASSERT(maskGrid->tree().getValue(ijk) == true); + + // test outside coord value + ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(1.5, 1.5, 1.5)); + CPPUNIT_ASSERT(maskGrid->tree().getValue(ijk) == false); +} + + +void +TestLevelSetUtil::testExtractEnclosedRegion() +{ + typedef openvdb::FloatGrid FloatGrid; + typedef openvdb::BoolGrid BoolGrid; + typedef openvdb::Vec3s Vec3s; + typedef openvdb::math::BBox BBoxs; + typedef openvdb::math::Transform Transform; + + BBoxs regionA(Vec3s(0.0f, 0.0f, 0.0f), Vec3s(3.0f, 3.0f, 3.0f)); + BBoxs regionB(Vec3s(1.0f, 1.0f, 1.0f), Vec3s(2.0f, 2.0f, 2.0f)); + + Transform::Ptr transform = Transform::createLinearTransform(0.1); + + FloatGrid::Ptr sdfGrid = openvdb::tools::createLevelSetBox(regionA, *transform); + FloatGrid::Ptr sdfGridB = openvdb::tools::createLevelSetBox(regionB, *transform); + + openvdb::tools::csgDifference(*sdfGrid, *sdfGridB); + + BoolGrid::Ptr maskGrid = openvdb::tools::extractEnclosedRegion(*sdfGrid); + + // test inside ls region coord value + openvdb::Coord ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(1.5, 1.5, 1.5)); + CPPUNIT_ASSERT(maskGrid->tree().getValue(ijk) == true); + + // test outside coord value + ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(3.5, 3.5, 3.5)); + CPPUNIT_ASSERT(maskGrid->tree().getValue(ijk) == false); +} + + +void +TestLevelSetUtil::testSegmentationTools() +{ + typedef openvdb::FloatGrid FloatGrid; + typedef openvdb::Vec3s Vec3s; + typedef openvdb::math::BBox BBoxs; + typedef openvdb::math::Transform Transform; + + { // Test SDF segmentation + + // Create two sdf boxes with overlapping narrow-bands. + BBoxs regionA(Vec3s(0.0f, 0.0f, 0.0f), Vec3s(2.0f, 2.0f, 2.0f)); + BBoxs regionB(Vec3s(2.5f, 0.0f, 0.0f), Vec3s(4.3f, 2.0f, 2.0f)); + + Transform::Ptr transform = Transform::createLinearTransform(0.1); + + FloatGrid::Ptr sdfGrid = openvdb::tools::createLevelSetBox(regionA, *transform); + FloatGrid::Ptr sdfGridB = openvdb::tools::createLevelSetBox(regionB, *transform); + + openvdb::tools::csgUnion(*sdfGrid, *sdfGridB); + + std::vector segments; + + // This tool will not identify two separate segments when the narrow-bands overlap. + openvdb::tools::segmentActiveVoxels(*sdfGrid, segments); + CPPUNIT_ASSERT(segments.size() == 1); + + segments.clear(); + + // This tool should properly identify two separate segments + openvdb::tools::segmentSDF(*sdfGrid, segments); + CPPUNIT_ASSERT(segments.size() == 2); + + + // test inside ls region coord value + openvdb::Coord ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(1.5, 1.5, 1.5)); + CPPUNIT_ASSERT(segments[0]->tree().getValue(ijk) < 0.0f); + + // test outside coord value + ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(3.5, 3.5, 3.5)); + CPPUNIT_ASSERT(segments[0]->tree().getValue(ijk) > 0.0f); + } + + { // Test empty SDF grid + + FloatGrid::Ptr sdfGrid = openvdb::FloatGrid::create(/*background=*/10.2f); + sdfGrid->setGridClass(openvdb::GRID_LEVEL_SET); + + std::vector segments; + openvdb::tools::segmentSDF(*sdfGrid, segments); + + CPPUNIT_ASSERT_EQUAL(size_t(1), segments.size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), segments[0]->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(10.2f, segments[0]->background()); + } + + { // Test SDF grid with inactive leaf nodes + + BBoxs bbox(Vec3s(0.0, 0.0, 0.0), Vec3s(1.0, 1.0, 1.0)); + Transform::Ptr transform = Transform::createLinearTransform(0.1); + FloatGrid::Ptr sdfGrid = openvdb::tools::createLevelSetBox(bbox, *transform, + /*halfwidth=*/5); + + CPPUNIT_ASSERT(sdfGrid->tree().activeVoxelCount() > openvdb::Index64(0)); + + // make all active voxels inactive + + for (auto leaf = sdfGrid->tree().beginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->beginValueOn(); iter; ++iter) { + leaf->setValueOff(iter.getCoord()); + } + } + + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), sdfGrid->tree().activeVoxelCount()); + + std::vector segments; + openvdb::tools::segmentSDF(*sdfGrid, segments); + + CPPUNIT_ASSERT_EQUAL(size_t(1), segments.size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), segments[0]->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(sdfGrid->background(), segments[0]->background()); + } + + { // Test fog volume with active tiles + + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(0.0); + + grid->fill(openvdb::CoordBBox(openvdb::Coord(0), openvdb::Coord(50)), 1.0); + grid->fill(openvdb::CoordBBox(openvdb::Coord(60), openvdb::Coord(100)), 1.0); + + CPPUNIT_ASSERT(grid->tree().hasActiveTiles() == true); + + std::vector segments; + openvdb::tools::segmentActiveVoxels(*grid, segments); + CPPUNIT_ASSERT_EQUAL(size_t(2), segments.size()); + } + + { // Test an empty fog volume + + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(/*background=*/3.1f); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), grid->tree().leafCount()); + + std::vector segments; + openvdb::tools::segmentActiveVoxels(*grid, segments); + + // note that an empty volume should segment into an empty volume + CPPUNIT_ASSERT_EQUAL(size_t(1), segments.size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), segments[0]->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(3.1f, segments[0]->background()); + } + + { // Test fog volume with two inactive leaf nodes + + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(0.0); + + grid->tree().touchLeaf(openvdb::Coord(0,0,0)); + grid->tree().touchLeaf(openvdb::Coord(100,100,100)); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(2), grid->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), grid->tree().activeVoxelCount()); + + std::vector segments; + openvdb::tools::segmentActiveVoxels(*grid, segments); + + CPPUNIT_ASSERT_EQUAL(size_t(1), segments.size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), segments[0]->tree().leafCount()); + } +} + diff --git a/openvdb/unittest/TestLinearInterp.cc b/openvdb/unittest/TestLinearInterp.cc new file mode 100644 index 00000000..b2507217 --- /dev/null +++ b/openvdb/unittest/TestLinearInterp.cc @@ -0,0 +1,1070 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +// CPPUNIT_TEST_SUITE() invokes CPPUNIT_TESTNAMER_DECL() to generate a suite name +// from the FixtureType. But if FixtureType is a templated type, the generated name +// can become long and messy. This macro overrides the normal naming logic, +// instead invoking FixtureType::testSuiteName(), which should be a static member +// function that returns a std::string containing the suite name for the specific +// template instantiation. +#undef CPPUNIT_TESTNAMER_DECL +#define CPPUNIT_TESTNAMER_DECL( variableName, FixtureType ) \ + CPPUNIT_NS::TestNamer variableName( FixtureType::testSuiteName() ) + +namespace { +// Absolute tolerance for floating-point equality comparisons +const double TOLERANCE = 1.e-6; +} + +template +class TestLinearInterp: public CppUnit::TestCase +{ +public: + static std::string testSuiteName() + { + std::string name = openvdb::typeNameAsString(); + if (!name.empty()) name[0] = static_cast(::toupper(name[0])); + return "TestLinearInterp" + name; + } + + CPPUNIT_TEST_SUITE(TestLinearInterp); + CPPUNIT_TEST(test); + CPPUNIT_TEST(testTree); + CPPUNIT_TEST(testAccessor); + CPPUNIT_TEST(testConstantValues); + CPPUNIT_TEST(testFillValues); + CPPUNIT_TEST(testNegativeIndices); + CPPUNIT_TEST(testStencilsMatch); + CPPUNIT_TEST_SUITE_END(); + + void test(); + void testTree(); + void testAccessor(); + void testConstantValues(); + void testFillValues(); + void testNegativeIndices(); + void testStencilsMatch(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestLinearInterp); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLinearInterp); +CPPUNIT_TEST_SUITE_REGISTRATION(TestLinearInterp); + + +template +void +TestLinearInterp::test() +{ + typename GridType::TreeType TreeType; + float fillValue = 256.0f; + + GridType grid(fillValue); + typename GridType::TreeType& tree = grid.tree(); + + tree.setValue(openvdb::Coord(10, 10, 10), 1.0); + + tree.setValue(openvdb::Coord(11, 10, 10), 2.0); + tree.setValue(openvdb::Coord(11, 11, 10), 2.0); + tree.setValue(openvdb::Coord(10, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 10, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 9, 10), 2.0); + tree.setValue(openvdb::Coord(10, 9, 10), 2.0); + tree.setValue(openvdb::Coord(11, 9, 10), 2.0); + + tree.setValue(openvdb::Coord(10, 10, 11), 3.0); + tree.setValue(openvdb::Coord(11, 10, 11), 3.0); + tree.setValue(openvdb::Coord(11, 11, 11), 3.0); + tree.setValue(openvdb::Coord(10, 11, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 11, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 10, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 9, 11), 3.0); + tree.setValue(openvdb::Coord(10, 9, 11), 3.0); + tree.setValue(openvdb::Coord(11, 9, 11), 3.0); + + tree.setValue(openvdb::Coord(10, 10, 9), 4.0); + tree.setValue(openvdb::Coord(11, 10, 9), 4.0); + tree.setValue(openvdb::Coord(11, 11, 9), 4.0); + tree.setValue(openvdb::Coord(10, 11, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 11, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 10, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 9, 9), 4.0); + tree.setValue(openvdb::Coord(10, 9, 9), 4.0); + tree.setValue(openvdb::Coord(11, 9, 9), 4.0); + + {//using BoxSampler + + // transform used for worldspace interpolation) + openvdb::tools::GridSampler + interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.375, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.1, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.792, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.71, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.01, val, TOLERANCE); + + } + {//using Sampler<1> + + // transform used for worldspace interpolation) + openvdb::tools::GridSampler > + interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.375, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.1, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.792, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.71, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.01, val, TOLERANCE); + } +} + + +template<> +void +TestLinearInterp::test() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3SGrid grid(fillValue); + Vec3STree& tree = grid.tree(); + + tree.setValue(openvdb::Coord(10, 10, 10), Vec3s(1.0, 1.0, 1.0)); + + tree.setValue(openvdb::Coord(11, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 9, 10), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(10, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(10, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 9, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(10, 9, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 9, 11), Vec3s(3.0, 3.0, 3.0)); + + tree.setValue(openvdb::Coord(10, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(10, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 9, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(10, 9, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 9, 9), Vec3s(4.0, 4.0, 4.0)); + + openvdb::tools::GridSampler + interpolator(grid); + + //openvdb::tools::LinearInterp interpolator(*tree); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.375f))); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.f))); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT(val.eq(Vec3s(3.f))); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.f))); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.f))); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.1f))); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.792f))); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.71f))); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(2.01f))); +} + +template +void +TestLinearInterp::testTree() +{ + float fillValue = 256.0f; + typedef typename GridType::TreeType TreeType; + TreeType tree(fillValue); + + tree.setValue(openvdb::Coord(10, 10, 10), 1.0); + + tree.setValue(openvdb::Coord(11, 10, 10), 2.0); + tree.setValue(openvdb::Coord(11, 11, 10), 2.0); + tree.setValue(openvdb::Coord(10, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 10, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 9, 10), 2.0); + tree.setValue(openvdb::Coord(10, 9, 10), 2.0); + tree.setValue(openvdb::Coord(11, 9, 10), 2.0); + + tree.setValue(openvdb::Coord(10, 10, 11), 3.0); + tree.setValue(openvdb::Coord(11, 10, 11), 3.0); + tree.setValue(openvdb::Coord(11, 11, 11), 3.0); + tree.setValue(openvdb::Coord(10, 11, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 11, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 10, 11), 3.0); + tree.setValue(openvdb::Coord( 9, 9, 11), 3.0); + tree.setValue(openvdb::Coord(10, 9, 11), 3.0); + tree.setValue(openvdb::Coord(11, 9, 11), 3.0); + + tree.setValue(openvdb::Coord(10, 10, 9), 4.0); + tree.setValue(openvdb::Coord(11, 10, 9), 4.0); + tree.setValue(openvdb::Coord(11, 11, 9), 4.0); + tree.setValue(openvdb::Coord(10, 11, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 11, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 10, 9), 4.0); + tree.setValue(openvdb::Coord( 9, 9, 9), 4.0); + tree.setValue(openvdb::Coord(10, 9, 9), 4.0); + tree.setValue(openvdb::Coord(11, 9, 9), 4.0); + + // transform used for worldspace interpolation) + openvdb::tools::GridSampler + interpolator(tree, openvdb::math::Transform()); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.375, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.1, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.792, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.71, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.01, val, TOLERANCE); +} + + +template<> +void +TestLinearInterp::testTree() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3STree tree(fillValue); + + tree.setValue(openvdb::Coord(10, 10, 10), Vec3s(1.0, 1.0, 1.0)); + + tree.setValue(openvdb::Coord(11, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 9, 10), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(10, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(10, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 11, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 10, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( 9, 9, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(10, 9, 11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(11, 9, 11), Vec3s(3.0, 3.0, 3.0)); + + tree.setValue(openvdb::Coord(10, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(10, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 11, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 10, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( 9, 9, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(10, 9, 9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(11, 9, 9), Vec3s(4.0, 4.0, 4.0)); + + openvdb::tools::GridSampler + interpolator(tree, openvdb::math::Transform()); + + //openvdb::tools::LinearInterp interpolator(*tree); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.375f))); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.f))); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT(val.eq(Vec3s(3.f))); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.f))); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.f))); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.1f))); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.792f))); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.71f))); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(2.01f))); +} + +template +void +TestLinearInterp::testAccessor() +{ + float fillValue = 256.0f; + + GridType grid(fillValue); + typedef typename GridType::Accessor AccessorType; + + AccessorType acc = grid.getAccessor(); + + acc.setValue(openvdb::Coord(10, 10, 10), 1.0); + + acc.setValue(openvdb::Coord(11, 10, 10), 2.0); + acc.setValue(openvdb::Coord(11, 11, 10), 2.0); + acc.setValue(openvdb::Coord(10, 11, 10), 2.0); + acc.setValue(openvdb::Coord( 9, 11, 10), 2.0); + acc.setValue(openvdb::Coord( 9, 10, 10), 2.0); + acc.setValue(openvdb::Coord( 9, 9, 10), 2.0); + acc.setValue(openvdb::Coord(10, 9, 10), 2.0); + acc.setValue(openvdb::Coord(11, 9, 10), 2.0); + + acc.setValue(openvdb::Coord(10, 10, 11), 3.0); + acc.setValue(openvdb::Coord(11, 10, 11), 3.0); + acc.setValue(openvdb::Coord(11, 11, 11), 3.0); + acc.setValue(openvdb::Coord(10, 11, 11), 3.0); + acc.setValue(openvdb::Coord( 9, 11, 11), 3.0); + acc.setValue(openvdb::Coord( 9, 10, 11), 3.0); + acc.setValue(openvdb::Coord( 9, 9, 11), 3.0); + acc.setValue(openvdb::Coord(10, 9, 11), 3.0); + acc.setValue(openvdb::Coord(11, 9, 11), 3.0); + + acc.setValue(openvdb::Coord(10, 10, 9), 4.0); + acc.setValue(openvdb::Coord(11, 10, 9), 4.0); + acc.setValue(openvdb::Coord(11, 11, 9), 4.0); + acc.setValue(openvdb::Coord(10, 11, 9), 4.0); + acc.setValue(openvdb::Coord( 9, 11, 9), 4.0); + acc.setValue(openvdb::Coord( 9, 10, 9), 4.0); + acc.setValue(openvdb::Coord( 9, 9, 9), 4.0); + acc.setValue(openvdb::Coord(10, 9, 9), 4.0); + acc.setValue(openvdb::Coord(11, 9, 9), 4.0); + + // transform used for worldspace interpolation) + openvdb::tools::GridSampler + interpolator(acc, grid.transform()); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.375, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.1, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.792, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.71, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.01, val, TOLERANCE); +} + + +template<> +void +TestLinearInterp::testAccessor() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3SGrid grid(fillValue); + typedef Vec3SGrid::Accessor AccessorType; + AccessorType acc = grid.getAccessor(); + + acc.setValue(openvdb::Coord(10, 10, 10), Vec3s(1.0, 1.0, 1.0)); + + acc.setValue(openvdb::Coord(11, 10, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord(11, 11, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord(10, 11, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord( 9, 11, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord( 9, 10, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord( 9, 9, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord(10, 9, 10), Vec3s(2.0, 2.0, 2.0)); + acc.setValue(openvdb::Coord(11, 9, 10), Vec3s(2.0, 2.0, 2.0)); + + acc.setValue(openvdb::Coord(10, 10, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord(11, 10, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord(11, 11, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord(10, 11, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord( 9, 11, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord( 9, 10, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord( 9, 9, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord(10, 9, 11), Vec3s(3.0, 3.0, 3.0)); + acc.setValue(openvdb::Coord(11, 9, 11), Vec3s(3.0, 3.0, 3.0)); + + acc.setValue(openvdb::Coord(10, 10, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord(11, 10, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord(11, 11, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord(10, 11, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord( 9, 11, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord( 9, 10, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord( 9, 9, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord(10, 9, 9), Vec3s(4.0, 4.0, 4.0)); + acc.setValue(openvdb::Coord(11, 9, 9), Vec3s(4.0, 4.0, 4.0)); + + openvdb::tools::GridSampler + interpolator(acc, grid.transform()); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.375f))); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.0f))); + + val = interpolator.sampleVoxel(11.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0f))); + + val = interpolator.sampleVoxel(11.0, 11.0, 11.0); + CPPUNIT_ASSERT(val.eq(Vec3s(3.0f))); + + val = interpolator.sampleVoxel(9.0, 11.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.0f))); + + val = interpolator.sampleVoxel(9.0, 10.0, 9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.0f))); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.1f))); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.792f))); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.71f))); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(2.01f))); +} + +template +void +TestLinearInterp::testConstantValues() +{ + typedef typename GridType::TreeType TreeType; + float fillValue = 256.0f; + + GridType grid(fillValue); + TreeType& tree = grid.tree(); + + // Add values to buffer zero. + tree.setValue(openvdb::Coord(10, 10, 10), 2.0); + + tree.setValue(openvdb::Coord(11, 10, 10), 2.0); + tree.setValue(openvdb::Coord(11, 11, 10), 2.0); + tree.setValue(openvdb::Coord(10, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 11, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 10, 10), 2.0); + tree.setValue(openvdb::Coord( 9, 9, 10), 2.0); + tree.setValue(openvdb::Coord(10, 9, 10), 2.0); + tree.setValue(openvdb::Coord(11, 9, 10), 2.0); + + tree.setValue(openvdb::Coord(10, 10, 11), 2.0); + tree.setValue(openvdb::Coord(11, 10, 11), 2.0); + tree.setValue(openvdb::Coord(11, 11, 11), 2.0); + tree.setValue(openvdb::Coord(10, 11, 11), 2.0); + tree.setValue(openvdb::Coord( 9, 11, 11), 2.0); + tree.setValue(openvdb::Coord( 9, 10, 11), 2.0); + tree.setValue(openvdb::Coord( 9, 9, 11), 2.0); + tree.setValue(openvdb::Coord(10, 9, 11), 2.0); + tree.setValue(openvdb::Coord(11, 9, 11), 2.0); + + tree.setValue(openvdb::Coord(10, 10, 9), 2.0); + tree.setValue(openvdb::Coord(11, 10, 9), 2.0); + tree.setValue(openvdb::Coord(11, 11, 9), 2.0); + tree.setValue(openvdb::Coord(10, 11, 9), 2.0); + tree.setValue(openvdb::Coord( 9, 11, 9), 2.0); + tree.setValue(openvdb::Coord( 9, 10, 9), 2.0); + tree.setValue(openvdb::Coord( 9, 9, 9), 2.0); + tree.setValue(openvdb::Coord(10, 9, 9), 2.0); + tree.setValue(openvdb::Coord(11, 9, 9), 2.0); + + openvdb::tools::GridSampler interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); +} + + +template<> +void +TestLinearInterp::testConstantValues() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3SGrid grid(fillValue); + Vec3STree& tree = grid.tree(); + + // Add values to buffer zero. + tree.setValue(openvdb::Coord(10, 10, 10), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(11, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 11, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 10, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 9, 10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 9, 10), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(10, 10, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 10, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 11, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 11, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 11, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 10, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 9, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 9, 11), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 9, 11), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(10, 10, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 10, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 11, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 11, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 11, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 10, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( 9, 9, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(10, 9, 9), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(11, 9, 9), Vec3s(2.0, 2.0, 2.0)); + + openvdb::tools::GridSampler interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0, 2.0, 2.0))); +} + + +template +void +TestLinearInterp::testFillValues() +{ + //typedef typename GridType::TreeType TreeType; + float fillValue = 256.0f; + + GridType grid(fillValue); + //typename GridType::TreeType& tree = grid.tree(); + + openvdb::tools::GridSampler + interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + typename GridType::ValueType val = + interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(256.0, val, TOLERANCE); +} + + +template<> +void +TestLinearInterp::testFillValues() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3SGrid grid(fillValue); + //Vec3STree& tree = grid.tree(); + + openvdb::tools::GridSampler + interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(10.5, 10.5, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.0, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.1, 10.0, 10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.8, 10.8, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.1, 10.8, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.8, 10.1, 10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.5, 10.1, 10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); + + val = interpolator.sampleVoxel(10.5, 10.8, 10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(256.0, 256.0, 256.0))); +} + + +template +void +TestLinearInterp::testNegativeIndices() +{ + typedef typename GridType::TreeType TreeType; + float fillValue = 256.0f; + + GridType grid(fillValue); + TreeType& tree = grid.tree(); + + tree.setValue(openvdb::Coord(-10, -10, -10), 1.0); + + tree.setValue(openvdb::Coord(-11, -10, -10), 2.0); + tree.setValue(openvdb::Coord(-11, -11, -10), 2.0); + tree.setValue(openvdb::Coord(-10, -11, -10), 2.0); + tree.setValue(openvdb::Coord( -9, -11, -10), 2.0); + tree.setValue(openvdb::Coord( -9, -10, -10), 2.0); + tree.setValue(openvdb::Coord( -9, -9, -10), 2.0); + tree.setValue(openvdb::Coord(-10, -9, -10), 2.0); + tree.setValue(openvdb::Coord(-11, -9, -10), 2.0); + + tree.setValue(openvdb::Coord(-10, -10, -11), 3.0); + tree.setValue(openvdb::Coord(-11, -10, -11), 3.0); + tree.setValue(openvdb::Coord(-11, -11, -11), 3.0); + tree.setValue(openvdb::Coord(-10, -11, -11), 3.0); + tree.setValue(openvdb::Coord( -9, -11, -11), 3.0); + tree.setValue(openvdb::Coord( -9, -10, -11), 3.0); + tree.setValue(openvdb::Coord( -9, -9, -11), 3.0); + tree.setValue(openvdb::Coord(-10, -9, -11), 3.0); + tree.setValue(openvdb::Coord(-11, -9, -11), 3.0); + + tree.setValue(openvdb::Coord(-10, -10, -9), 4.0); + tree.setValue(openvdb::Coord(-11, -10, -9), 4.0); + tree.setValue(openvdb::Coord(-11, -11, -9), 4.0); + tree.setValue(openvdb::Coord(-10, -11, -9), 4.0); + tree.setValue(openvdb::Coord( -9, -11, -9), 4.0); + tree.setValue(openvdb::Coord( -9, -10, -9), 4.0); + tree.setValue(openvdb::Coord( -9, -9, -9), 4.0); + tree.setValue(openvdb::Coord(-10, -9, -9), 4.0); + tree.setValue(openvdb::Coord(-11, -9, -9), 4.0); + + //openvdb::tools::LinearInterp interpolator(*tree); + openvdb::tools::GridSampler interpolator(grid); + + typename GridType::ValueType val = + interpolator.sampleVoxel(-10.5, -10.5, -10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.375, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.0, -10.0, -10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-11.0, -10.0, -10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-11.0, -11.0, -10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-11.0, -11.0, -11.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-9.0, -11.0, -9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-9.0, -10.0, -9.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.1, -10.0, -10.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.1, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.8, -10.8, -10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.792, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.1, -10.8, -10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.8, -10.1, -10.5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.41, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.5, -10.1, -10.8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.71, val, TOLERANCE); + + val = interpolator.sampleVoxel(-10.5, -10.8, -10.1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.01, val, TOLERANCE); +} + + +template<> +void +TestLinearInterp::testNegativeIndices() +{ + using namespace openvdb; + + Vec3s fillValue = Vec3s(256.0f, 256.0f, 256.0f); + + Vec3SGrid grid(fillValue); + Vec3STree& tree = grid.tree(); + + tree.setValue(openvdb::Coord(-10, -10, -10), Vec3s(1.0, 1.0, 1.0)); + + tree.setValue(openvdb::Coord(-11, -10, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(-11, -11, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(-10, -11, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( -9, -11, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( -9, -10, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord( -9, -9, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(-10, -9, -10), Vec3s(2.0, 2.0, 2.0)); + tree.setValue(openvdb::Coord(-11, -9, -10), Vec3s(2.0, 2.0, 2.0)); + + tree.setValue(openvdb::Coord(-10, -10, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(-11, -10, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(-11, -11, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(-10, -11, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( -9, -11, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( -9, -10, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord( -9, -9, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(-10, -9, -11), Vec3s(3.0, 3.0, 3.0)); + tree.setValue(openvdb::Coord(-11, -9, -11), Vec3s(3.0, 3.0, 3.0)); + + tree.setValue(openvdb::Coord(-10, -10, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(-11, -10, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(-11, -11, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(-10, -11, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( -9, -11, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( -9, -10, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord( -9, -9, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(-10, -9, -9), Vec3s(4.0, 4.0, 4.0)); + tree.setValue(openvdb::Coord(-11, -9, -9), Vec3s(4.0, 4.0, 4.0)); + + openvdb::tools::GridSampler interpolator(grid); + //openvdb::tools::LinearInterp interpolator(*tree); + + Vec3SGrid::ValueType val = interpolator.sampleVoxel(-10.5, -10.5, -10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.375f))); + + val = interpolator.sampleVoxel(-10.0, -10.0, -10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.0f))); + + val = interpolator.sampleVoxel(-11.0, -10.0, -10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0f))); + + val = interpolator.sampleVoxel(-11.0, -11.0, -10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(2.0f))); + + val = interpolator.sampleVoxel(-11.0, -11.0, -11.0); + CPPUNIT_ASSERT(val.eq(Vec3s(3.0f))); + + val = interpolator.sampleVoxel(-9.0, -11.0, -9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.0f))); + + val = interpolator.sampleVoxel(-9.0, -10.0, -9.0); + CPPUNIT_ASSERT(val.eq(Vec3s(4.0f))); + + val = interpolator.sampleVoxel(-10.1, -10.0, -10.0); + CPPUNIT_ASSERT(val.eq(Vec3s(1.1f))); + + val = interpolator.sampleVoxel(-10.8, -10.8, -10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.792f))); + + val = interpolator.sampleVoxel(-10.1, -10.8, -10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(-10.8, -10.1, -10.5); + CPPUNIT_ASSERT(val.eq(Vec3s(2.41f))); + + val = interpolator.sampleVoxel(-10.5, -10.1, -10.8); + CPPUNIT_ASSERT(val.eq(Vec3s(2.71f))); + + val = interpolator.sampleVoxel(-10.5, -10.8, -10.1); + CPPUNIT_ASSERT(val.eq(Vec3s(2.01f))); +} + + +template +void +TestLinearInterp::testStencilsMatch() +{ + typedef typename GridType::ValueType ValueType; + + GridType grid; + typename GridType::TreeType& tree = grid.tree(); + + // using mostly recurring numbers + + tree.setValue(openvdb::Coord(0, 0, 0), ValueType(1.0/3.0)); + tree.setValue(openvdb::Coord(0, 1, 0), ValueType(1.0/11.0)); + tree.setValue(openvdb::Coord(0, 0, 1), ValueType(1.0/81.0)); + tree.setValue(openvdb::Coord(1, 0, 0), ValueType(1.0/97.0)); + tree.setValue(openvdb::Coord(1, 1, 0), ValueType(1.0/61.0)); + tree.setValue(openvdb::Coord(0, 1, 1), ValueType(9.0/7.0)); + tree.setValue(openvdb::Coord(1, 0, 1), ValueType(9.0/11.0)); + tree.setValue(openvdb::Coord(1, 1, 1), ValueType(22.0/7.0)); + + const openvdb::Vec3f pos(7.0f/12.0f, 1.0f/3.0f, 2.0f/3.0f); + + {//using BoxSampler and BoxStencil + + openvdb::tools::GridSampler + interpolator(grid); + + openvdb::math::BoxStencil + stencil(grid); + + typename GridType::ValueType val1 = interpolator.sampleVoxel(pos.x(), pos.y(), pos.z()); + + stencil.moveTo(pos); + typename GridType::ValueType val2 = stencil.interpolation(pos); + CPPUNIT_ASSERT_EQUAL(val1, val2); + } +} + +template<> +void +TestLinearInterp::testStencilsMatch() {} + diff --git a/openvdb/unittest/TestMaps.cc b/openvdb/unittest/TestMaps.cc new file mode 100644 index 00000000..8b8858bd --- /dev/null +++ b/openvdb/unittest/TestMaps.cc @@ -0,0 +1,799 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + + +class TestMaps: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestMaps); + CPPUNIT_TEST(testTranslation); + CPPUNIT_TEST(testRotation); + CPPUNIT_TEST(testScaleDefault); + CPPUNIT_TEST(testScaleTranslate); + CPPUNIT_TEST(testUniformScaleTranslate); + CPPUNIT_TEST(testDecomposition); + CPPUNIT_TEST(testFrustum); + CPPUNIT_TEST(testCalcBoundingBox); + CPPUNIT_TEST(testApproxInverse); + CPPUNIT_TEST(testUniformScale); + CPPUNIT_TEST(testJacobians); + CPPUNIT_TEST_SUITE_END(); + + void testTranslation(); + void testRotation(); + void testScaleDefault(); + void testScaleTranslate(); + void testUniformScaleTranslate(); + void testDecomposition(); + void testFrustum(); + void testCalcBoundingBox(); + void testApproxInverse(); + void testUniformScale(); + void testJacobians(); + //void testIsType(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMaps); + +void +TestMaps::testApproxInverse() +{ + using namespace openvdb::math; + + Mat4d singular = Mat4d::identity(); + singular[1][1] = 0.f; + { + Mat4d singularInv = approxInverse(singular); + + CPPUNIT_ASSERT( singular == singularInv ); + } + { + Mat4d rot = Mat4d::identity(); + rot.setToRotation(X_AXIS, M_PI/4.); + + Mat4d rotInv = rot.inverse(); + Mat4d mat = rotInv * singular * rot; + + Mat4d singularInv = approxInverse(mat); + + // this matrix is equal to its own singular inverse + CPPUNIT_ASSERT( mat.eq(singularInv) ); + + } + { + Mat4d m = Mat4d::identity(); + m[0][1] = 1; + + // should give true inverse, since this matrix has det=1 + Mat4d minv = approxInverse(m); + + Mat4d prod = m * minv; + CPPUNIT_ASSERT( prod.eq( Mat4d::identity() ) ); + } + { + Mat4d m = Mat4d::identity(); + m[0][1] = 1; + m[1][1] = 0; + // should give true inverse, since this matrix has det=1 + Mat4d minv = approxInverse(m); + + Mat4d expected = Mat4d::zero(); + expected[3][3] = 1; + CPPUNIT_ASSERT( minv.eq(expected ) ); + } + + +} + + +void +TestMaps::testUniformScale() +{ + using namespace openvdb::math; + + AffineMap map; + + CPPUNIT_ASSERT(map.hasUniformScale()); + + // Apply uniform scale: should still have square voxels + map.accumPreScale(Vec3d(2, 2, 2)); + + CPPUNIT_ASSERT(map.hasUniformScale()); + + // Apply a rotation, should still have squaure voxels. + map.accumPostRotation(X_AXIS, 2.5); + + CPPUNIT_ASSERT(map.hasUniformScale()); + + // non uniform scaling will stretch the voxels + map.accumPostScale(Vec3d(1, 3, 1) ); + + CPPUNIT_ASSERT(!map.hasUniformScale()); +} + +void +TestMaps::testTranslation() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + TranslationMap::Ptr translation(new TranslationMap(Vec3d(1,1,1))); + CPPUNIT_ASSERT(is_linear::value); + + TranslationMap another_translation(Vec3d(1,1,1)); + CPPUNIT_ASSERT(another_translation == *translation); + + TranslationMap::Ptr translate_by_two(new TranslationMap(Vec3d(2,2,2))); + + CPPUNIT_ASSERT(*translate_by_two != *translation); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(translate_by_two->determinant(), 1, TOL); + + CPPUNIT_ASSERT(translate_by_two->hasUniformScale()); + + /// apply the map forward + Vec3d unit(1,0,0); + Vec3d result = translate_by_two->applyMap(unit); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), 3, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), 2, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), 2, TOL); + + /// invert the map + result = translate_by_two->applyInverseMap(result); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), 0, TOL); + + /// Inverse Jacobian Transpose + result = translate_by_two->applyIJT(result); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), 0, TOL); + + /// Jacobian Transpose + result = translate_by_two->applyJT(translate_by_two->applyIJT(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + + + MapBase::Ptr inverse = translation->inverseMap(); + CPPUNIT_ASSERT(inverse->type() == TranslationMap::mapType()); + // apply the map forward and the inverse map back + result = inverse->applyMap(translation->applyMap(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), 0, TOL); + + +} + +void +TestMaps::testScaleDefault() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + // testing default constructor + // should be the identity + ScaleMap::Ptr scale(new ScaleMap()); + Vec3d unit(1, 1, 1); + + Vec3d result = scale->applyMap(unit); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(0), result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(1), result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(2), result(2), TOL); + + result = scale->applyInverseMap(unit); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(0), result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(1), result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(unit(2), result(2), TOL); + + + MapBase::Ptr inverse = scale->inverseMap(); + CPPUNIT_ASSERT(inverse->type() == ScaleMap::mapType()); + // apply the map forward and the inverse map back + result = inverse->applyMap(scale->applyMap(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + + +} + +void +TestMaps::testRotation() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + double pi = 4.*atan(1.); + UnitaryMap::Ptr rotation(new UnitaryMap(Vec3d(1,0,0), pi/2)); + + CPPUNIT_ASSERT(is_linear::value); + + UnitaryMap another_rotation(Vec3d(1,0,0), pi/2.); + CPPUNIT_ASSERT(another_rotation == *rotation); + + UnitaryMap::Ptr rotation_two(new UnitaryMap(Vec3d(1,0,0), pi/4.)); + + CPPUNIT_ASSERT(*rotation_two != *rotation); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(rotation->determinant(), 1, TOL); + + CPPUNIT_ASSERT(rotation_two->hasUniformScale()); + + /// apply the map forward + Vec3d unit(0,1,0); + Vec3d result = rotation->applyMap(unit); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(2), TOL); + + /// invert the map + result = rotation->applyInverseMap(result); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(2), TOL); + + /// Inverse Jacobian Transpose + result = rotation_two->applyIJT(result); // rotate backwards + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(sqrt(2.)/2, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(sqrt(2.)/2, result(2), TOL); + + /// Jacobian Transpose + result = rotation_two->applyJT(rotation_two->applyIJT(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + + + // Test inverse map + MapBase::Ptr inverse = rotation->inverseMap(); + CPPUNIT_ASSERT(inverse->type() == UnitaryMap::mapType()); + // apply the map forward and the inverse map back + result = inverse->applyMap(rotation->applyMap(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); +} + + +void +TestMaps::testScaleTranslate() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + CPPUNIT_ASSERT(is_linear::value); + + TranslationMap::Ptr translation(new TranslationMap(Vec3d(1,1,1))); + ScaleMap::Ptr scale(new ScaleMap(Vec3d(1,2,3))); + + ScaleTranslateMap::Ptr scaleAndTranslate( + new ScaleTranslateMap(*scale, *translation)); + + TranslationMap translate_by_two(Vec3d(2,2,2)); + ScaleTranslateMap another_scaleAndTranslate(*scale, translate_by_two); + + CPPUNIT_ASSERT(another_scaleAndTranslate != *scaleAndTranslate); + + CPPUNIT_ASSERT(!scaleAndTranslate->hasUniformScale()); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(scaleAndTranslate->determinant(), 6, TOL); + + /// apply the map forward + Vec3d unit(1,0,0); + Vec3d result = scaleAndTranslate->applyMap(unit); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(2), TOL); + + /// invert the map + result = scaleAndTranslate->applyInverseMap(result); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(2), TOL); + + /// Inverse Jacobian Transpose + result = Vec3d(0,2,0); + result = scaleAndTranslate->applyIJT(result ); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(2), TOL); + + + /// Jacobian Transpose + result = scaleAndTranslate->applyJT(scaleAndTranslate->applyIJT(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + + + // Test inverse map + MapBase::Ptr inverse = scaleAndTranslate->inverseMap(); + CPPUNIT_ASSERT(inverse->type() == ScaleTranslateMap::mapType()); + // apply the map forward and the inverse map back + result = inverse->applyMap(scaleAndTranslate->applyMap(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + +} + + +void +TestMaps::testUniformScaleTranslate() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + CPPUNIT_ASSERT(is_linear::value); + CPPUNIT_ASSERT(is_linear::value); + + TranslationMap::Ptr translation(new TranslationMap(Vec3d(1,1,1))); + UniformScaleMap::Ptr scale(new UniformScaleMap(2)); + + UniformScaleTranslateMap::Ptr scaleAndTranslate( + new UniformScaleTranslateMap(*scale, *translation)); + + TranslationMap translate_by_two(Vec3d(2,2,2)); + UniformScaleTranslateMap another_scaleAndTranslate(*scale, translate_by_two); + + CPPUNIT_ASSERT(another_scaleAndTranslate != *scaleAndTranslate); + CPPUNIT_ASSERT(scaleAndTranslate->hasUniformScale()); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(scaleAndTranslate->determinant(), 6, TOL); + + /// apply the map forward + Vec3d unit(1,0,0); + Vec3d result = scaleAndTranslate->applyMap(unit); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(2), TOL); + + /// invert the map + result = scaleAndTranslate->applyInverseMap(result); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(2), TOL); + + /// Inverse Jacobian Transpose + result = Vec3d(0,2,0); + result = scaleAndTranslate->applyIJT(result ); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1, result(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0, result(2), TOL); + + + /// Jacobian Transpose + result = scaleAndTranslate->applyJT(scaleAndTranslate->applyIJT(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + + + + // Test inverse map + MapBase::Ptr inverse = scaleAndTranslate->inverseMap(); + CPPUNIT_ASSERT(inverse->type() == UniformScaleTranslateMap::mapType()); + // apply the map forward and the inverse map back + result = inverse->applyMap(scaleAndTranslate->applyMap(unit)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), unit(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), unit(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), unit(2), TOL); + +} + + +void +TestMaps::testDecomposition() +{ + using namespace openvdb::math; + + //double TOL = 1e-7; + + CPPUNIT_ASSERT(is_linear::value); + CPPUNIT_ASSERT(is_linear::value); + CPPUNIT_ASSERT(is_linear::value); + CPPUNIT_ASSERT(is_linear::value); + + Mat4d matrix(Mat4d::identity()); + Vec3d input_translation(0,0,1); + matrix.setTranslation(input_translation); + + + matrix(0,0) = 1.8930039; + matrix(1,0) = -0.120080537; + matrix(2,0) = -0.497615212; + + matrix(0,1) = -0.120080537; + matrix(1,1) = 2.643265436; + matrix(2,1) = 0.6176957495; + + matrix(0,2) = -0.497615212; + matrix(1,2) = 0.6176957495; + matrix(2,2) = 1.4637305884; + + FullyDecomposedMap::Ptr decomp = createFullyDecomposedMap(matrix); + + /// the singular values + const Vec3& singular_values = + decomp->firstMap().firstMap().secondMap().getScale(); + /// expected values + Vec3d expected_values(2, 3, 1); + + CPPUNIT_ASSERT( isApproxEqual(singular_values, expected_values) ); + + const Vec3& the_translation = decomp->secondMap().secondMap().getTranslation(); + CPPUNIT_ASSERT( isApproxEqual(the_translation, input_translation)); +} + + +void +TestMaps::testFrustum() +{ + using namespace openvdb::math; + + openvdb::BBoxd bbox(Vec3d(0), Vec3d(100)); + NonlinearFrustumMap frustum(bbox, 1./6., 5); + /// frustum will have depth, far plane - near plane = 5 + /// the frustum has width 1 in the front and 6 in the back + + Vec3d trans(2,2,2); + NonlinearFrustumMap::Ptr map = + openvdb::StaticPtrCast( + frustum.preScale(Vec3d(10,10,10))->postTranslate(trans)); + + CPPUNIT_ASSERT(!map->hasUniformScale()); + + Vec3d result; + result = map->voxelSize(); + + CPPUNIT_ASSERT( isApproxEqual(result.x(), 0.1)); + CPPUNIT_ASSERT( isApproxEqual(result.y(), 0.1)); + CPPUNIT_ASSERT( isApproxEqual(result.z(), 0.5, 0.0001)); + //--------- Front face + Vec3d corner(0,0,0); + result = map->applyMap(corner); + CPPUNIT_ASSERT(isApproxEqual(result, Vec3d(-5, -5, 0) + trans)); + + corner = Vec3d(100,0,0); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(5, -5, 0) + trans)); + + corner = Vec3d(0,100,0); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(-5, 5, 0) + trans)); + + corner = Vec3d(100,100,0); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(5, 5, 0) + trans)); + + //--------- Back face + corner = Vec3d(0,0,100); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(-30, -30, 50) + trans)); // 10*(5/2 + 1/2) = 30 + + corner = Vec3d(100,0,100); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(30, -30, 50) + trans)); + + corner = Vec3d(0,100,100); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(-30, 30, 50) + trans)); + + corner = Vec3d(100,100,100); + result = map->applyMap(corner); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(30, 30, 50) + trans)); + + + // invert a single corner + result = map->applyInverseMap(Vec3d(30,30,50) + trans); + CPPUNIT_ASSERT( isApproxEqual(result, Vec3d(100, 100, 100))); + + CPPUNIT_ASSERT(map->hasSimpleAffine()); + + /// create a frustum from from camera type information + + // the location of the camera + Vec3d position(100,10,1); + // the direction the camera is pointing + Vec3d direction(0,1,1); + direction.normalize(); + + // the up-direction for the camera + Vec3d up(10,3,-3); + + // distance from camera to near-plane measured in the direction 'direction' + double z_near = 100.; + // depth of frustum to far-plane to near-plane + double depth = 500.; + //aspect ratio of frustum: width/height + double aspect = 2; + + // voxel count in frustum. the y_count = x_count / aspect + Coord::ValueType x_count = 500; + Coord::ValueType z_count = 5000; + + + NonlinearFrustumMap frustumMap_from_camera( + position, direction, up, aspect, z_near, depth, x_count, z_count); + Vec3d center; + // find the center of the near plane and make sure it is in the correct place + center = Vec3d(0,0,0); + center += frustumMap_from_camera.applyMap(Vec3d(0,0,0)); + center += frustumMap_from_camera.applyMap(Vec3d(500,0,0)); + center += frustumMap_from_camera.applyMap(Vec3d(0,250,0)); + center += frustumMap_from_camera.applyMap(Vec3d(500,250,0)); + center = center /4.; + CPPUNIT_ASSERT( isApproxEqual(center, position + z_near * direction)); + // find the center of the far plane and make sure it is in the correct place + center = Vec3d(0,0,0); + center += frustumMap_from_camera.applyMap(Vec3d( 0, 0,5000)); + center += frustumMap_from_camera.applyMap(Vec3d(500, 0,5000)); + center += frustumMap_from_camera.applyMap(Vec3d( 0,250,5000)); + center += frustumMap_from_camera.applyMap(Vec3d(500,250,5000)); + center = center /4.; + CPPUNIT_ASSERT( isApproxEqual(center, position + (z_near+depth) * direction)); + // check that the frustum has the correct heigh on the near plane + Vec3d corner1 = frustumMap_from_camera.applyMap(Vec3d(0,0,0)); + Vec3d corner2 = frustumMap_from_camera.applyMap(Vec3d(0,250,0)); + Vec3d side = corner2-corner1; + CPPUNIT_ASSERT( isApproxEqual( side.length(), 2 * up.length())); + // check that the frustum is correctly oriented w.r.t up + side.normalize(); + CPPUNIT_ASSERT( isApproxEqual( side * (up.length()), up)); + // check that the linear map inside the frustum is a simple affine map (i.e. has no shear) + CPPUNIT_ASSERT(frustumMap_from_camera.hasSimpleAffine()); +} + + +void +TestMaps::testCalcBoundingBox() +{ + using namespace openvdb::math; + + openvdb::BBoxd world_bbox(Vec3d(0,0,0), Vec3d(1,1,1)); + openvdb::BBoxd voxel_bbox; + openvdb::BBoxd expected; + { + AffineMap affine; + affine.accumPreScale(Vec3d(2,2,2)); + + openvdb::util::calculateBounds(affine, world_bbox, voxel_bbox); + + expected = openvdb::BBoxd(Vec3d(0,0,0), Vec3d(0.5, 0.5, 0.5)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + + affine.accumPostTranslation(Vec3d(1,1,1)); + openvdb::util::calculateBounds(affine, world_bbox, voxel_bbox); + expected = openvdb::BBoxd(Vec3d(-0.5,-0.5,-0.5), Vec3d(0, 0, 0)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + } + { + AffineMap affine; + affine.accumPreScale(Vec3d(2,2,2)); + affine.accumPostTranslation(Vec3d(1,1,1)); + // test a sphere: + Vec3d center(0,0,0); + double radius = 10; + + openvdb::util::calculateBounds(affine, center, radius, voxel_bbox); + expected = openvdb::BBoxd(Vec3d(-5.5,-5.5,-5.5), Vec3d(4.5, 4.5, 4.5)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + } + { + AffineMap affine; + affine.accumPreScale(Vec3d(2,2,2)); + double pi = 4.*atan(1.); + affine.accumPreRotation(X_AXIS, pi/4.); + Vec3d center(0,0,0); + double radius = 10; + + openvdb::util::calculateBounds(affine, center, radius, voxel_bbox); + expected = openvdb::BBoxd(Vec3d(-5,-5,-5), Vec3d(5, 5, 5)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + } + { + AffineMap affine; + affine.accumPreScale(Vec3d(2,1,1)); + double pi = 4.*atan(1.); + affine.accumPreRotation(X_AXIS, pi/4.); + Vec3d center(0,0,0); + double radius = 10; + + openvdb::util::calculateBounds(affine, center, radius, voxel_bbox); + expected = openvdb::BBoxd(Vec3d(-5,-10,-10), Vec3d(5, 10, 10)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + } + { + AffineMap affine; + affine.accumPreScale(Vec3d(2,1,1)); + double pi = 4.*atan(1.); + affine.accumPreRotation(X_AXIS, pi/4.); + affine.accumPostTranslation(Vec3d(1,1,1)); + Vec3d center(1,1,1); + double radius = 10; + + openvdb::util::calculateBounds(affine, center, radius, voxel_bbox); + expected = openvdb::BBoxd(Vec3d(-5,-10,-10), Vec3d(5, 10, 10)); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.min(), expected.min())); + CPPUNIT_ASSERT(isApproxEqual(voxel_bbox.max(), expected.max())); + } + { + openvdb::BBoxd bbox(Vec3d(0), Vec3d(100)); + NonlinearFrustumMap frustum(bbox, 2, 5); + NonlinearFrustumMap::Ptr map = + openvdb::StaticPtrCast( + frustum.preScale(Vec3d(2,2,2))); + Vec3d center(20,20,10); + double radius(1); + + openvdb::util::calculateBounds(*map, center, radius, voxel_bbox); + } +} +void +TestMaps::testJacobians() +{ + using namespace openvdb::math; + const double TOL = 1e-7; + { + AffineMap affine; + + const int n = 10; + const double dtheta = M_PI / n; + + const Vec3d test(1,2,3); + const Vec3d origin(0,0,0); + + for (int i = 0; i < n; ++i) { + double theta = i * dtheta; + + affine.accumPostRotation(X_AXIS, theta); + + Vec3d result = affine.applyJacobian(test); + Vec3d expected = affine.applyMap(test) - affine.applyMap(origin); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), expected(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), expected(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), expected(2), TOL); + + Vec3d tmp = affine.applyInverseJacobian(result); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + } + } + + { + UniformScaleMap scale(3); + const Vec3d test(1,2,3); + const Vec3d origin(0,0,0); + + + Vec3d result = scale.applyJacobian(test); + Vec3d expected = scale.applyMap(test) - scale.applyMap(origin); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), expected(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), expected(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), expected(2), TOL); + + Vec3d tmp = scale.applyInverseJacobian(result); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + } + + { + ScaleMap scale(Vec3d(1,2,3)); + const Vec3d test(1,2,3); + const Vec3d origin(0,0,0); + + + Vec3d result = scale.applyJacobian(test); + Vec3d expected = scale.applyMap(test) - scale.applyMap(origin); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), expected(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), expected(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), expected(2), TOL); + + Vec3d tmp = scale.applyInverseJacobian(result); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + } + { + TranslationMap map(Vec3d(1,2,3)); + const Vec3d test(1,2,3); + const Vec3d origin(0,0,0); + + + Vec3d result = map.applyJacobian(test); + Vec3d expected = map.applyMap(test) - map.applyMap(origin); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), expected(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), expected(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), expected(2), TOL); + + Vec3d tmp = map.applyInverseJacobian(result); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + } + { + ScaleTranslateMap map(Vec3d(1,2,3), Vec3d(3,5,4)); + const Vec3d test(1,2,3); + const Vec3d origin(0,0,0); + + + Vec3d result = map.applyJacobian(test); + Vec3d expected = map.applyMap(test) - map.applyMap(origin); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(0), expected(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(1), expected(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(result(2), expected(2), TOL); + + Vec3d tmp = map.applyInverseJacobian(result); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + } + { + openvdb::BBoxd bbox(Vec3d(0), Vec3d(100)); + NonlinearFrustumMap frustum(bbox, 1./6., 5); + /// frustum will have depth, far plane - near plane = 5 + /// the frustum has width 1 in the front and 6 in the back + + Vec3d trans(2,2,2); + NonlinearFrustumMap::Ptr map = + openvdb::StaticPtrCast( + frustum.preScale(Vec3d(10,10,10))->postTranslate(trans)); + + const Vec3d test(1,2,3); + const Vec3d origin(0, 0, 0); + + // these two drop down to just the linear part + Vec3d lresult = map->applyJacobian(test); + Vec3d ltmp = map->applyInverseJacobian(lresult); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(ltmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ltmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ltmp(2), test(2), TOL); + + Vec3d isloc(4,5,6); + // these two drop down to just the linear part + Vec3d result = map->applyJacobian(test, isloc); + Vec3d tmp = map->applyInverseJacobian(result, isloc); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(0), test(0), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(1), test(1), TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(tmp(2), test(2), TOL); + + + + } + + +} diff --git a/openvdb/unittest/TestMat4Metadata.cc b/openvdb/unittest/TestMat4Metadata.cc new file mode 100644 index 00000000..193d849a --- /dev/null +++ b/openvdb/unittest/TestMat4Metadata.cc @@ -0,0 +1,100 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestMat4Metadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestMat4Metadata); + CPPUNIT_TEST(testMat4s); + CPPUNIT_TEST(testMat4d); + CPPUNIT_TEST_SUITE_END(); + + void testMat4s(); + void testMat4d(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMat4Metadata); + +void +TestMat4Metadata::testMat4s() +{ + using namespace openvdb; + + Metadata::Ptr m(new Mat4SMetadata(openvdb::math::Mat4s(1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f))); + Metadata::Ptr m3 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast( m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m3.get()) != 0); + + CPPUNIT_ASSERT( m->typeName().compare("mat4s") == 0); + CPPUNIT_ASSERT(m3->typeName().compare("mat4s") == 0); + + Mat4SMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4s(1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f)); + s->value() = openvdb::math::Mat4s(3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4s(3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f)); + + m3->copy(*s); + + s = dynamic_cast(m3.get()); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4s(3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f, + 3.0f, 3.0f, 3.0f, 3.0f)); +} + +void +TestMat4Metadata::testMat4d() +{ + using namespace openvdb; + + Metadata::Ptr m(new Mat4DMetadata(openvdb::math::Mat4d(1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0))); + Metadata::Ptr m3 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast( m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m3.get()) != 0); + + CPPUNIT_ASSERT( m->typeName().compare("mat4d") == 0); + CPPUNIT_ASSERT(m3->typeName().compare("mat4d") == 0); + + Mat4DMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4d(1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0, + 1.0, 1.0, 1.0, 1.0)); + s->value() = openvdb::math::Mat4d(3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4d(3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0)); + + m3->copy(*s); + + s = dynamic_cast(m3.get()); + CPPUNIT_ASSERT(s->value() == openvdb::math::Mat4d(3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0, + 3.0, 3.0, 3.0, 3.0)); +} diff --git a/openvdb/unittest/TestMath.cc b/openvdb/unittest/TestMath.cc new file mode 100644 index 00000000..18eb7082 --- /dev/null +++ b/openvdb/unittest/TestMath.cc @@ -0,0 +1,223 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include + + +class TestMath: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestMath); + CPPUNIT_TEST(testAll); + CPPUNIT_TEST(testRandomInt); + CPPUNIT_TEST(testRandom01); + CPPUNIT_TEST(testMinMaxIndex); + CPPUNIT_TEST_SUITE_END(); + + void testAll(); + void testRandomInt(); + void testRandom01(); + void testMinMaxIndex(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMath); + + +// This suite of tests obviously needs to be expanded! +void +TestMath::testAll() +{ + using namespace openvdb; + + {// Sign + CPPUNIT_ASSERT_EQUAL(math::Sign( 3 ), 1); + CPPUNIT_ASSERT_EQUAL(math::Sign(-1.0 ),-1); + CPPUNIT_ASSERT_EQUAL(math::Sign( 0.0f), 0); + } + {// SignChange + CPPUNIT_ASSERT( math::SignChange( -1, 1)); + CPPUNIT_ASSERT(!math::SignChange( 0.0f, 0.5f)); + CPPUNIT_ASSERT( math::SignChange( 0.0f,-0.5f)); + CPPUNIT_ASSERT( math::SignChange(-0.1, 0.0001)); + + } + {// isApproxZero + CPPUNIT_ASSERT( math::isApproxZero( 0.0f)); + CPPUNIT_ASSERT(!math::isApproxZero( 9.0e-6f)); + CPPUNIT_ASSERT(!math::isApproxZero(-9.0e-6f)); + CPPUNIT_ASSERT( math::isApproxZero( 9.0e-9f)); + CPPUNIT_ASSERT( math::isApproxZero(-9.0e-9f)); + CPPUNIT_ASSERT( math::isApproxZero( 0.01, 0.1)); + } + {// Cbrt + const double a = math::Cbrt(3.0); + CPPUNIT_ASSERT(math::isApproxEqual(a*a*a, 3.0, 1e-6)); + } + {// isNegative + CPPUNIT_ASSERT(!std::is_signed::value); + CPPUNIT_ASSERT(std::is_signed::value); + CPPUNIT_ASSERT(!std::is_signed::value); + //CPPUNIT_ASSERT(std::is_signed::value);//fails! + //CPPUNIT_ASSERT(std::is_signed::value);//fails! + + CPPUNIT_ASSERT( math::isNegative(-1.0f)); + CPPUNIT_ASSERT(!math::isNegative( 1.0f)); + CPPUNIT_ASSERT( math::isNegative(-1.0)); + CPPUNIT_ASSERT(!math::isNegative( 1.0)); + CPPUNIT_ASSERT(!math::isNegative(true)); + CPPUNIT_ASSERT(!math::isNegative(false)); + CPPUNIT_ASSERT(!math::isNegative(1u)); + CPPUNIT_ASSERT( math::isNegative(-1)); + CPPUNIT_ASSERT(!math::isNegative( 1)); + } + {// zeroVal + CPPUNIT_ASSERT_EQUAL(zeroVal(), false); + CPPUNIT_ASSERT_EQUAL(zeroVal(), int(0)); + CPPUNIT_ASSERT_EQUAL(zeroVal(), 0.0f); + CPPUNIT_ASSERT_EQUAL(zeroVal(), 0.0); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Vec3i(0,0,0)); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Vec3s(0,0,0)); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Vec3d(0,0,0)); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Quats::zero()); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Quatd::zero()); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Mat3s::zero()); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Mat3d::zero()); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Mat4s::zero()); + CPPUNIT_ASSERT_EQUAL(zeroVal(), Mat4d::zero()); + } +} + + +void +TestMath::testRandomInt() +{ + using openvdb::math::RandomInt; + + int imin = -3, imax = 11; + RandomInt rnd(/*seed=*/42, imin, imax); + + // Generate a sequence of random integers and verify that they all fall + // in the interval [imin, imax]. + std::vector seq(100); + for (int i = 0; i < 100; ++i) { + seq[i] = rnd(); + CPPUNIT_ASSERT(seq[i] >= imin); + CPPUNIT_ASSERT(seq[i] <= imax); + } + + // Verify that generators with the same seed produce the same sequence. + rnd = RandomInt(42, imin, imax); + for (int i = 0; i < 100; ++i) { + int r = rnd(); + CPPUNIT_ASSERT_EQUAL(seq[i], r); + } + + // Verify that generators with different seeds produce different sequences. + rnd = RandomInt(101, imin, imax); + std::vector newSeq(100); + for (int i = 0; i < 100; ++i) newSeq[i] = rnd(); + CPPUNIT_ASSERT(newSeq != seq); + + // Temporarily change the range. + imin = -5; imax = 6; + for (int i = 0; i < 100; ++i) { + int r = rnd(imin, imax); + CPPUNIT_ASSERT(r >= imin); + CPPUNIT_ASSERT(r <= imax); + } + // Verify that the range change was temporary. + imin = -3; imax = 11; + for (int i = 0; i < 100; ++i) { + int r = rnd(); + CPPUNIT_ASSERT(r >= imin); + CPPUNIT_ASSERT(r <= imax); + } + + // Permanently change the range. + imin = -5; imax = 6; + rnd.setRange(imin, imax); + for (int i = 0; i < 100; ++i) { + int r = rnd(); + CPPUNIT_ASSERT(r >= imin); + CPPUNIT_ASSERT(r <= imax); + } + + // Verify that it is OK to specify imin > imax (they are automatically swapped). + imin = 5; imax = -6; + rnd.setRange(imin, imax); + + rnd = RandomInt(42, imin, imax); +} + + +void +TestMath::testRandom01() +{ + using openvdb::math::Random01; + using openvdb::math::isApproxEqual; + + Random01 rnd(/*seed=*/42); + + // Generate a sequence of random numbers and verify that they all fall + // in the interval [0, 1). + std::vector seq(100); + for (int i = 0; i < 100; ++i) { + seq[i] = rnd(); + CPPUNIT_ASSERT(seq[i] >= 0.0); + CPPUNIT_ASSERT(seq[i] < 1.0); + } + + // Verify that generators with the same seed produce the same sequence. + rnd = Random01(42); + for (int i = 0; i < 100; ++i) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(seq[i], rnd(), /*tolerance=*/1.0e-6); + } + + // Verify that generators with different seeds produce different sequences. + rnd = Random01(101); + bool allEqual = true; + for (int i = 0; allEqual && i < 100; ++i) { + if (!isApproxEqual(rnd(), seq[i])) allEqual = false; + } + CPPUNIT_ASSERT(!allEqual); +} + +void +TestMath::testMinMaxIndex() +{ + const openvdb::Vec3R a(-1, 2, 0); + CPPUNIT_ASSERT_EQUAL(size_t(0), openvdb::math::MinIndex(a)); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MaxIndex(a)); + const openvdb::Vec3R b(-1, -2, 0); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MinIndex(b)); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MaxIndex(b)); + const openvdb::Vec3R c(5, 2, 1); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MinIndex(c)); + CPPUNIT_ASSERT_EQUAL(size_t(0), openvdb::math::MaxIndex(c)); + const openvdb::Vec3R d(0, 0, 1); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MinIndex(d)); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MaxIndex(d)); + const openvdb::Vec3R e(1, 0, 0); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MinIndex(e)); + CPPUNIT_ASSERT_EQUAL(size_t(0), openvdb::math::MaxIndex(e)); + const openvdb::Vec3R f(0, 1, 0); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MinIndex(f)); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MaxIndex(f)); + const openvdb::Vec3R g(1, 1, 0); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MinIndex(g)); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MaxIndex(g)); + const openvdb::Vec3R h(1, 0, 1); + CPPUNIT_ASSERT_EQUAL(size_t(1), openvdb::math::MinIndex(h)); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MaxIndex(h)); + const openvdb::Vec3R i(0, 1, 1); + CPPUNIT_ASSERT_EQUAL(size_t(0), openvdb::math::MinIndex(i)); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MaxIndex(i)); + const openvdb::Vec3R j(1, 1, 1); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MinIndex(j)); + CPPUNIT_ASSERT_EQUAL(size_t(2), openvdb::math::MaxIndex(j)); +} diff --git a/openvdb/unittest/TestMeanCurvature.cc b/openvdb/unittest/TestMeanCurvature.cc new file mode 100644 index 00000000..259d7cea --- /dev/null +++ b/openvdb/unittest/TestMeanCurvature.cc @@ -0,0 +1,810 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include +#include + +class TestMeanCurvature: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestMeanCurvature); + CPPUNIT_TEST(testISMeanCurvature); // MeanCurvature in Index Space + CPPUNIT_TEST(testISMeanCurvatureStencil); + CPPUNIT_TEST(testWSMeanCurvature); // MeanCurvature in World Space + CPPUNIT_TEST(testWSMeanCurvatureStencil); + CPPUNIT_TEST(testMeanCurvatureTool); // MeanCurvature tool + CPPUNIT_TEST(testMeanCurvatureMaskedTool); // MeanCurvature tool + CPPUNIT_TEST(testCurvatureStencil); // CurvatureStencil + CPPUNIT_TEST(testIntersection); + + CPPUNIT_TEST_SUITE_END(); + + void testISMeanCurvature(); + void testISMeanCurvatureStencil(); + void testWSMeanCurvature(); + void testWSMeanCurvatureStencil(); + void testMeanCurvatureTool(); + void testMeanCurvatureMaskedTool(); + void testCurvatureStencil(); + void testIntersection(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMeanCurvature); + + +void +TestMeanCurvature::testISMeanCurvature() +{ + using namespace openvdb; + + typedef FloatGrid::ConstAccessor AccessorType; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + AccessorType inAccessor = grid->getConstAccessor(); + AccessorType::ValueType alpha, beta, meancurv, normGrad; + Coord xyz(35,30,30); + + // First test an empty grid + CPPUNIT_ASSERT(tree.empty()); + typedef math::ISMeanCurvature SecondOrder; + CPPUNIT_ASSERT(!SecondOrder::result(inAccessor, xyz, alpha, beta)); + + typedef math::ISMeanCurvature FourthOrder; + CPPUNIT_ASSERT(!FourthOrder::result(inAccessor, xyz, alpha, beta)); + + typedef math::ISMeanCurvature SixthOrder; + CPPUNIT_ASSERT(!SixthOrder::result(inAccessor, xyz, alpha, beta)); + + // Next test a level set sphere + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + + SecondOrder::result(inAccessor, xyz, alpha, beta); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + FourthOrder::result(inAccessor, xyz, alpha, beta); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + SixthOrder::result(inAccessor, xyz, alpha, beta); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + xyz.reset(35,10,40); + + SecondOrder::result(inAccessor, xyz, alpha, beta); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, normGrad, 0.001); +} + + +void +TestMeanCurvature::testISMeanCurvatureStencil() +{ + using namespace openvdb; + + typedef FloatGrid::ConstAccessor AccessorType; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + math::SixthOrderDenseStencil dense_6th(*grid); + AccessorType::ValueType alpha, beta; + Coord xyz(35,30,30); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + // First test on an empty grid + CPPUNIT_ASSERT(tree.empty()); + + typedef math::ISMeanCurvature SecondOrder; + CPPUNIT_ASSERT(!SecondOrder::result(dense_2nd, alpha, beta)); + + typedef math::ISMeanCurvature FourthOrder; + CPPUNIT_ASSERT(!FourthOrder::result(dense_4th, alpha, beta)); + + typedef math::ISMeanCurvature SixthOrder; + CPPUNIT_ASSERT(!SixthOrder::result(dense_6th, alpha, beta)); + + // Next test on a level set sphere + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + CPPUNIT_ASSERT(!tree.empty()); + + CPPUNIT_ASSERT(SecondOrder::result(dense_2nd, alpha, beta)); + + AccessorType::ValueType meancurv = alpha/(2*math::Pow3(beta) ); + AccessorType::ValueType normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + CPPUNIT_ASSERT(FourthOrder::result(dense_4th, alpha, beta)); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + CPPUNIT_ASSERT(SixthOrder::result(dense_6th, alpha, beta)); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + xyz.reset(35,10,40); + dense_2nd.moveTo(xyz); + CPPUNIT_ASSERT(SecondOrder::result(dense_2nd, alpha, beta)); + + meancurv = alpha/(2*math::Pow3(beta) ); + normGrad = alpha/(2*math::Pow2(beta) ); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, normGrad, 0.001); +} + + +void +TestMeanCurvature::testWSMeanCurvature() +{ + using namespace openvdb; + using math::AffineMap; + using math::TranslationMap; + using math::UniformScaleMap; + + typedef FloatGrid::ConstAccessor AccessorType; + + {// Empty grid test + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + AccessorType inAccessor = grid->getConstAccessor(); + Coord xyz(35,30,30); + CPPUNIT_ASSERT(tree.empty()); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + AffineMap affine; + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + + UniformScaleMap uniform; + meancurv = math::MeanCurvature::result( + uniform, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + uniform, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + + xyz.reset(35,10,40); + + TranslationMap trans; + meancurv = math::MeanCurvature::result( + trans, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + trans, inAccessor, xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + } + + { // unit size voxel test + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f ,30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + Coord xyz(35,30,30); + + AccessorType inAccessor = grid->getConstAccessor(); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + AffineMap affine; + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + UniformScaleMap uniform; + meancurv = math::MeanCurvature::result( + uniform, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + uniform, inAccessor, xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + xyz.reset(35,10,40); + + TranslationMap trans; + meancurv = math::MeanCurvature::result( + trans, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + trans, inAccessor, xyz); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, normGrad, 0.001); + } + { // non-unit sized voxel + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + AccessorType inAccessor = grid->getConstAccessor(); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + Coord xyz(20,16,20); + AffineMap affine(voxel_size*math::Mat3d::identity()); + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + affine, inAccessor, xyz); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + + UniformScaleMap uniform(voxel_size); + meancurv = math::MeanCurvature::result( + uniform, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + uniform, inAccessor, xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + + } + { // NON-UNIFORM SCALING AND ROTATION + + Vec3d voxel_sizes(0.25, 0.45, 0.75); + FloatGrid::Ptr grid = FloatGrid::create(); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + // apply rotation + math::MapBase::Ptr rotated_map = base_map->preRotate(1.5, math::X_AXIS); + grid->setTransform(math::Transform::Ptr(new math::Transform(rotated_map))); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + AccessorType inAccessor = grid->getConstAccessor(); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + Coord xyz(20,16,20); + Vec3d location = grid->indexToWorld(xyz); + double dist = (center - location).length(); + AffineMap::ConstPtr affine = grid->transform().map(); + meancurv = math::MeanCurvature::result( + *affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + *affine, inAccessor, xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + *affine, inAccessor, xyz); + normGrad = math::MeanCurvature::normGrad( + *affine, inAccessor, xyz); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, normGrad, 0.001); + } +} + + +void +TestMeanCurvature::testWSMeanCurvatureStencil() +{ + using namespace openvdb; + using math::AffineMap; + using math::TranslationMap; + using math::UniformScaleMap; + + typedef FloatGrid::ConstAccessor AccessorType; + + {// empty grid test + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + Coord xyz(35,30,30); + + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + math::SixthOrderDenseStencil dense_6th(*grid); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + AffineMap affine; + meancurv = math::MeanCurvature::result( + affine, dense_2nd); + normGrad = math::MeanCurvature::normGrad( + affine, dense_2nd); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.00); + + meancurv = math::MeanCurvature::result( + affine, dense_4th); + normGrad = math::MeanCurvature::normGrad( + affine, dense_4th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.00); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.00); + + UniformScaleMap uniform; + meancurv = math::MeanCurvature::result( + uniform, dense_6th); + normGrad = math::MeanCurvature::normGrad( + uniform, dense_6th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + + xyz.reset(35,10,40); + dense_6th.moveTo(xyz); + + TranslationMap trans; + meancurv = math::MeanCurvature::result( + trans, dense_6th); + normGrad = math::MeanCurvature::normGrad( + trans, dense_6th); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, meancurv, 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, normGrad, 0.0); + } + + { // unit-sized voxels + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f);//i.e. (35,30,40) in index space + const float radius=0.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + Coord xyz(35,30,30); + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + math::SixthOrderDenseStencil dense_6th(*grid); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + AffineMap affine; + meancurv = math::MeanCurvature::result( + affine, dense_2nd); + normGrad = math::MeanCurvature::normGrad( + affine, dense_2nd); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + affine, dense_4th); + normGrad = math::MeanCurvature::normGrad( + affine, dense_4th); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + UniformScaleMap uniform; + meancurv = math::MeanCurvature::result( + uniform, dense_6th); + normGrad = math::MeanCurvature::normGrad( + uniform, dense_6th); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, normGrad, 0.001); + + xyz.reset(35,10,40); + dense_6th.moveTo(xyz); + + TranslationMap trans; + meancurv = math::MeanCurvature::result( + trans, dense_6th); + normGrad = math::MeanCurvature::normGrad( + trans, dense_6th); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, normGrad, 0.001); + } + { // non-unit sized voxel + + double voxel_size = 0.5; + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(voxel_size)); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + Coord xyz(20,16,20); + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + math::SixthOrderDenseStencil dense_6th(*grid); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + dense_6th.moveTo(xyz); + + AffineMap affine(voxel_size*math::Mat3d::identity()); + meancurv = math::MeanCurvature::result( + affine, dense_2nd); + normGrad = math::MeanCurvature::normGrad( + affine, dense_2nd); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + affine, dense_4th); + normGrad = math::MeanCurvature::normGrad( + affine, dense_4th); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + + UniformScaleMap uniform(voxel_size); + meancurv = math::MeanCurvature::result( + uniform, dense_6th); + normGrad = math::MeanCurvature::normGrad( + uniform, dense_6th); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, normGrad, 0.001); + } + { // NON-UNIFORM SCALING AND ROTATION + + Vec3d voxel_sizes(0.25, 0.45, 0.75); + FloatGrid::Ptr grid = FloatGrid::create(); + math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes)); + // apply rotation + math::MapBase::Ptr rotated_map = base_map->preRotate(1.5, math::X_AXIS); + grid->setTransform(math::Transform::Ptr(new math::Transform(rotated_map))); + CPPUNIT_ASSERT(grid->empty()); + + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + AccessorType::ValueType meancurv; + AccessorType::ValueType normGrad; + + Coord xyz(20,16,20); + math::SecondOrderDenseStencil dense_2nd(*grid); + math::FourthOrderDenseStencil dense_4th(*grid); + dense_2nd.moveTo(xyz); + dense_4th.moveTo(xyz); + + + Vec3d location = grid->indexToWorld(xyz); + double dist = (center - location).length(); + AffineMap::ConstPtr affine = grid->transform().map(); + meancurv = math::MeanCurvature::result( + *affine, dense_2nd); + normGrad = math::MeanCurvature::normGrad( + *affine, dense_2nd); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, normGrad, 0.001); + meancurv = math::MeanCurvature::result( + *affine, dense_4th); + normGrad = math::MeanCurvature::normGrad( + *affine, dense_4th); + + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, meancurv, 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/dist, normGrad, 0.001); + } +} + + +void +TestMeanCurvature::testMeanCurvatureTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f);//i.e. (35,30,40) in index space + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + FloatGrid::Ptr curv = tools::meanCurvature(*grid); + FloatGrid::ConstAccessor accessor = curv->getConstAccessor(); + + Coord xyz(35,30,30); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, accessor.getValue(xyz), 0.001); + + xyz.reset(35,10,40); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/20.0, accessor.getValue(xyz), 0.001); +} + + +void +TestMeanCurvature::testMeanCurvatureMaskedTool() +{ + using namespace openvdb; + + FloatGrid::Ptr grid = createGrid(/*background=*/5.0); + FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f);//i.e. (35,30,40) in index space + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + + + const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41)); + BoolGrid::Ptr maskGrid = BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + + FloatGrid::Ptr curv = tools::meanCurvature(*grid, *maskGrid); + FloatGrid::ConstAccessor accessor = curv->getConstAccessor(); + + // test inside + Coord xyz(35,30,30); + CPPUNIT_ASSERT(maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/10.0, accessor.getValue(xyz), 0.001); + + // test outside + xyz.reset(35,10,40); + CPPUNIT_ASSERT(!maskbbox.isInside(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, accessor.getValue(xyz), 0.001); +} + + +void +TestMeanCurvature::testCurvatureStencil() +{ + using namespace openvdb; + + {// test of level set to sphere at (6,8,10) with R=10 and dx=0.5 + + FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0); + grid->setTransform(math::Transform::createLinearTransform(/*voxel size=*/0.5)); + CPPUNIT_ASSERT(grid->empty()); + math::CurvatureStencil cs(*grid); + Coord xyz(20,16,20);//i.e. 8 voxel or 4 world units away from the center + cs.moveTo(xyz); + + // First test on an empty grid + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, cs.meanCurvature(), 0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, cs.meanCurvatureNormGrad(), 0.0); + + // Next test on a level set sphere + const openvdb::Coord dim(32,32,32); + const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space + const float radius=10.0f; + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!grid->empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount())); + cs.moveTo(xyz); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, cs.meanCurvature(), 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, cs.meanCurvatureNormGrad(), 0.01);// 1/distance from center + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/16.0, cs.gaussianCurvature(), 0.01);// 1/distance^2 from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/16.0, cs.gaussianCurvatureNormGrad(), 0.01);// 1/distance^2 from center + + float mean, gaussian; + cs.curvatures(mean, gaussian); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, mean, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/16.0, gaussian, 0.01);// 1/distance^2 from center + + auto principalCurvatures = cs.principalCurvatures(); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, principalCurvatures.first, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/4.0, principalCurvatures.second, 0.01);// 1/distance from center + + xyz.reset(12,16,10);//i.e. 10 voxel or 5 world units away from the center + cs.moveTo(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/5.0, cs.meanCurvature(), 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 1.0/5.0, cs.meanCurvatureNormGrad(), 0.01);// 1/distance from center + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/25.0, cs.gaussianCurvature(), 0.01);// 1/distance^2 from center + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 1.0/25.0, cs.gaussianCurvatureNormGrad(), 0.01);// 1/distance^2 from center + + principalCurvatures = cs.principalCurvatures(); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/5.0, principalCurvatures.first, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/5.0, principalCurvatures.second, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 1.0/5.0, principalCurvatures.first, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL( + 1.0/5.0, principalCurvatures.second, 0.01);// 1/distance from center + + cs.curvaturesNormGrad(mean, gaussian); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/5.0, mean, 0.01);// 1/distance from center + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/25.0, gaussian, 0.01);// 1/distance^2 from center + } + {// test sparse level set sphere + const double percentage = 0.1/100.0;//i.e. 0.1% + const int dim = 256; + + // sparse level set sphere + Vec3f C(0.35f, 0.35f, 0.35f); + Real r = 0.15, voxelSize = 1.0/(dim-1); + FloatGrid::Ptr sphere = tools::createLevelSetSphere(float(r), C, float(voxelSize)); + + math::CurvatureStencil cs(*sphere); + const Coord ijk = Coord::round(sphere->worldToIndex(Vec3d(0.35, 0.35, 0.35 + 0.15))); + const double radius = (sphere->indexToWorld(ijk)-Vec3d(0.35)).length(); + //std::cerr << "\rRadius = " << radius << std::endl; + //std::cerr << "Index coord =" << ijk << std::endl; + cs.moveTo(ijk); + + //std::cerr << "Mean curvature = " << cs.meanCurvature() << ", 1/r=" << 1.0/radius << std::endl; + //std::cerr << "Gaussian curvature = " << cs.gaussianCurvature() << ", 1/(r*r)=" << 1.0/(radius*radius) << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/radius, cs.meanCurvature(), percentage*1.0/radius); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/(radius*radius), cs.gaussianCurvature(), percentage*1.0/(radius*radius)); + float mean, gauss; + cs.curvatures(mean, gauss); + //std::cerr << "Mean curvature = " << mean << ", 1/r=" << 1.0/radius << std::endl; + //std::cerr << "Gaussian curvature = " << gauss << ", 1/(r*r)=" << 1.0/(radius*radius) << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/radius, mean, percentage*1.0/radius); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0/(radius*radius), gauss, percentage*1.0/(radius*radius)); + } +} + +void +TestMeanCurvature::testIntersection() +{ + using namespace openvdb; + const Coord ijk(1,4,-9); + FloatGrid grid(0.0f); + auto acc = grid.getAccessor(); + math::GradStencil stencil(grid); + acc.setValue(ijk,-1.0f); + int cases = 0; + for (int mx=0; mx<2; ++mx) { + acc.setValue(ijk.offsetBy(-1,0,0), mx ? 1.0f : -1.0f); + for (int px=0; px<2; ++px) { + acc.setValue(ijk.offsetBy(1,0,0), px ? 1.0f : -1.0f); + for (int my=0; my<2; ++my) { + acc.setValue(ijk.offsetBy(0,-1,0), my ? 1.0f : -1.0f); + for (int py=0; py<2; ++py) { + acc.setValue(ijk.offsetBy(0,1,0), py ? 1.0f : -1.0f); + for (int mz=0; mz<2; ++mz) { + acc.setValue(ijk.offsetBy(0,0,-1), mz ? 1.0f : -1.0f); + for (int pz=0; pz<2; ++pz) { + acc.setValue(ijk.offsetBy(0,0,1), pz ? 1.0f : -1.0f); + ++cases; + CPPUNIT_ASSERT_EQUAL(7, int(grid.activeVoxelCount())); + stencil.moveTo(ijk); + const size_t count = mx + px + my + py + mz + pz;// number of intersections + CPPUNIT_ASSERT(stencil.intersects() == (count > 0)); + auto mask = stencil.intersectionMask(); + CPPUNIT_ASSERT(mask.none() == (count == 0)); + CPPUNIT_ASSERT(mask.any() == (count > 0)); + CPPUNIT_ASSERT_EQUAL(count, mask.count()); + CPPUNIT_ASSERT(mask.test(0) == mx); + CPPUNIT_ASSERT(mask.test(1) == px); + CPPUNIT_ASSERT(mask.test(2) == my); + CPPUNIT_ASSERT(mask.test(3) == py); + CPPUNIT_ASSERT(mask.test(4) == mz); + CPPUNIT_ASSERT(mask.test(5) == pz); + }//pz + }//mz + }//py + }//my + }//px + }//mx + CPPUNIT_ASSERT_EQUAL(64, cases);// = 2^6 +}//testIntersection \ No newline at end of file diff --git a/openvdb/unittest/TestMeshToVolume.cc b/openvdb/unittest/TestMeshToVolume.cc new file mode 100644 index 00000000..dad3dcf2 --- /dev/null +++ b/openvdb/unittest/TestMeshToVolume.cc @@ -0,0 +1,149 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include +#include + +#include +#include + + +class TestMeshToVolume: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestMeshToVolume); + CPPUNIT_TEST(testUtils); + CPPUNIT_TEST(testConversion); + CPPUNIT_TEST(testCreateLevelSetBox); + CPPUNIT_TEST_SUITE_END(); + + void testUtils(); + void testConversion(); + void testCreateLevelSetBox(); + +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMeshToVolume); + + +//////////////////////////////////////// + + +void +TestMeshToVolume::testUtils() +{ + /// Test nearestCoord + openvdb::Vec3d xyz(0.7, 2.2, -2.7); + openvdb::Coord ijk = openvdb::util::nearestCoord(xyz); + CPPUNIT_ASSERT(ijk[0] == 0 && ijk[1] == 2 && ijk[2] == -3); + + xyz = openvdb::Vec3d(-22.1, 4.6, 202.34); + ijk = openvdb::util::nearestCoord(xyz); + CPPUNIT_ASSERT(ijk[0] == -23 && ijk[1] == 4 && ijk[2] == 202); + + /// Test the coordinate offset table for neghbouring voxels + openvdb::Coord sum(0, 0, 0); + + unsigned int pX = 0, pY = 0, pZ = 0, mX = 0, mY = 0, mZ = 0; + + for (unsigned int i = 0; i < 26; ++i) { + ijk = openvdb::util::COORD_OFFSETS[i]; + sum += ijk; + + if (ijk[0] == 1) ++pX; + else if (ijk[0] == -1) ++mX; + + if (ijk[1] == 1) ++pY; + else if (ijk[1] == -1) ++mY; + + if (ijk[2] == 1) ++pZ; + else if (ijk[2] == -1) ++mZ; + } + + CPPUNIT_ASSERT(sum == openvdb::Coord(0, 0, 0)); + + CPPUNIT_ASSERT( pX == 9); + CPPUNIT_ASSERT( pY == 9); + CPPUNIT_ASSERT( pZ == 9); + CPPUNIT_ASSERT( mX == 9); + CPPUNIT_ASSERT( mY == 9); + CPPUNIT_ASSERT( mZ == 9); +} + +void +TestMeshToVolume::testConversion() +{ + using namespace openvdb; + + std::vector points; + std::vector quads; + + // cube vertices + points.push_back(Vec3s(2, 2, 2)); // 0 6--------7 + points.push_back(Vec3s(5, 2, 2)); // 1 /| /| + points.push_back(Vec3s(2, 5, 2)); // 2 2--------3 | + points.push_back(Vec3s(5, 5, 2)); // 3 | | | | + points.push_back(Vec3s(2, 2, 5)); // 4 | 4------|-5 + points.push_back(Vec3s(5, 2, 5)); // 5 |/ |/ + points.push_back(Vec3s(2, 5, 5)); // 6 0--------1 + points.push_back(Vec3s(5, 5, 5)); // 7 + + // cube faces + quads.push_back(Vec4I(0, 1, 3, 2)); // front + quads.push_back(Vec4I(5, 4, 6, 7)); // back + quads.push_back(Vec4I(0, 2, 6, 4)); // left + quads.push_back(Vec4I(1, 5, 7, 3)); // right + quads.push_back(Vec4I(2, 3, 7, 6)); // top + quads.push_back(Vec4I(0, 4, 5, 1)); // bottom + + math::Transform::Ptr xform = math::Transform::createLinearTransform(); + + tools::QuadAndTriangleDataAdapter mesh(points, quads); + + FloatGrid::Ptr grid = tools::meshToVolume(mesh, *xform); + + CPPUNIT_ASSERT(grid.get() != NULL); + CPPUNIT_ASSERT_EQUAL(int(GRID_LEVEL_SET), int(grid->getGridClass())); + CPPUNIT_ASSERT_EQUAL(1, int(grid->baseTree().leafCount())); + + grid = tools::meshToLevelSet(*xform, points, quads); + + CPPUNIT_ASSERT(grid.get() != NULL); + CPPUNIT_ASSERT_EQUAL(int(GRID_LEVEL_SET), int(grid->getGridClass())); + CPPUNIT_ASSERT_EQUAL(1, int(grid->baseTree().leafCount())); +} + + +void +TestMeshToVolume::testCreateLevelSetBox() +{ + typedef openvdb::FloatGrid FloatGrid; + typedef openvdb::Vec3s Vec3s; + typedef openvdb::math::BBox BBoxs; + typedef openvdb::math::Transform Transform; + + BBoxs bbox(Vec3s(0.0, 0.0, 0.0), Vec3s(1.0, 1.0, 1.0)); + + Transform::Ptr transform = Transform::createLinearTransform(0.1); + + FloatGrid::Ptr grid = openvdb::tools::createLevelSetBox(bbox, *transform); + + double gridBackground = grid->background(); + double expectedBackground = transform->voxelSize().x() * double(openvdb::LEVEL_SET_HALF_WIDTH); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedBackground, gridBackground, 1e-6); + + CPPUNIT_ASSERT(grid->tree().leafCount() > 0); + + // test inside coord value + openvdb::Coord ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(0.5, 0.5, 0.5)); + CPPUNIT_ASSERT(grid->tree().getValue(ijk) < 0.0f); + + // test outside coord value + ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(1.5, 1.5, 1.5)); + CPPUNIT_ASSERT(grid->tree().getValue(ijk) > 0.0f); +} + diff --git a/openvdb/unittest/TestMetaMap.cc b/openvdb/unittest/TestMetaMap.cc new file mode 100644 index 00000000..60f1bc65 --- /dev/null +++ b/openvdb/unittest/TestMetaMap.cc @@ -0,0 +1,373 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +class TestMetaMap: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestMetaMap); + CPPUNIT_TEST(testInsert); + CPPUNIT_TEST(testRemove); + CPPUNIT_TEST(testGetMetadata); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testEmptyIO); + CPPUNIT_TEST(testCopyConstructor); + CPPUNIT_TEST(testCopyConstructorEmpty); + CPPUNIT_TEST(testAssignment); + CPPUNIT_TEST(testEquality); + CPPUNIT_TEST_SUITE_END(); + + void testInsert(); + void testRemove(); + void testGetMetadata(); + void testIO(); + void testEmptyIO(); + void testCopyConstructor(); + void testCopyConstructorEmpty(); + void testAssignment(); + void testEquality(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetaMap); + +void +TestMetaMap::testInsert() +{ + using namespace openvdb; + + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", FloatMetadata(2.0)); + + MetaMap::MetaIterator iter = meta.beginMeta(); + int i = 1; + for( ; iter != meta.endMeta(); ++iter, ++i) { + if(i == 1) { + CPPUNIT_ASSERT(iter->first.compare("meta1") == 0); + std::string val = meta.metaValue("meta1"); + CPPUNIT_ASSERT(val == "testing"); + } else if(i == 2) { + CPPUNIT_ASSERT(iter->first.compare("meta2") == 0); + int32_t val = meta.metaValue("meta2"); + CPPUNIT_ASSERT(val == 20); + } else if(i == 3) { + CPPUNIT_ASSERT(iter->first.compare("meta3") == 0); + float val = meta.metaValue("meta3"); + //CPPUNIT_ASSERT(val == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0f,val,0); + } + } +} + +void +TestMetaMap::testRemove() +{ + using namespace openvdb; + + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", FloatMetadata(2.0)); + + meta.removeMeta("meta2"); + + MetaMap::MetaIterator iter = meta.beginMeta(); + int i = 1; + for( ; iter != meta.endMeta(); ++iter, ++i) { + if(i == 1) { + CPPUNIT_ASSERT(iter->first.compare("meta1") == 0); + std::string val = meta.metaValue("meta1"); + CPPUNIT_ASSERT(val == "testing"); + } else if(i == 2) { + CPPUNIT_ASSERT(iter->first.compare("meta3") == 0); + float val = meta.metaValue("meta3"); + //CPPUNIT_ASSERT(val == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0f,val,0); + } + } + + meta.removeMeta("meta1"); + + iter = meta.beginMeta(); + for( ; iter != meta.endMeta(); ++iter, ++i) { + CPPUNIT_ASSERT(iter->first.compare("meta3") == 0); + float val = meta.metaValue("meta3"); + //CPPUNIT_ASSERT(val == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0f,val,0); + } + + meta.removeMeta("meta3"); + + CPPUNIT_ASSERT_EQUAL(0, int(meta.metaCount())); +} + +void +TestMetaMap::testGetMetadata() +{ + using namespace openvdb; + + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", DoubleMetadata(2.0)); + + Metadata::Ptr metadata = meta["meta2"]; + CPPUNIT_ASSERT(metadata); + CPPUNIT_ASSERT(metadata->typeName().compare("int32") == 0); + + DoubleMetadata::Ptr dm = meta.getMetadata("meta3"); + //CPPUNIT_ASSERT(dm->value() == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0,dm->value(),0); + + const DoubleMetadata::Ptr cdm = meta.getMetadata("meta3"); + //CPPUNIT_ASSERT(dm->value() == 2.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0,cdm->value(),0); + + CPPUNIT_ASSERT(!meta.getMetadata("meta2")); + + CPPUNIT_ASSERT_THROW(meta.metaValue("meta3"), + openvdb::TypeError); + + CPPUNIT_ASSERT_THROW(meta.metaValue("meta5"), + openvdb::LookupError); +} + +void +TestMetaMap::testIO() +{ + using namespace openvdb; + + logging::LevelScope suppressLogging{logging::Level::Fatal}; + + Metadata::clearRegistry(); + + // Write some metadata using unregistered types. + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", DoubleMetadata(2.0)); + std::ostringstream ostr(std::ios_base::binary); + meta.writeMeta(ostr); + + // Verify that reading metadata of unregistered types is possible, + // though the values cannot be retrieved. + MetaMap meta2; + std::istringstream istr(ostr.str(), std::ios_base::binary); + CPPUNIT_ASSERT_NO_THROW(meta2.readMeta(istr)); +#if OPENVDB_ABI_VERSION_NUMBER < 5 + CPPUNIT_ASSERT_EQUAL(0, int(meta2.metaCount())); +#else + CPPUNIT_ASSERT_EQUAL(3, int(meta2.metaCount())); + + // Verify that writing metadata of unknown type (i.e., UnknownMetadata) is possible. + std::ostringstream ostrUnknown(std::ios_base::binary); + meta2.writeMeta(ostrUnknown); +#endif + + // Register just one of the three types, then reread and verify that + // the value of the registered type can be retrieved. + Int32Metadata::registerType(); + istr.seekg(0, std::ios_base::beg); + CPPUNIT_ASSERT_NO_THROW(meta2.readMeta(istr)); +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + CPPUNIT_ASSERT_EQUAL(3, int(meta2.metaCount())); +#else + CPPUNIT_ASSERT_EQUAL(1, int(meta2.metaCount())); +#endif + CPPUNIT_ASSERT_EQUAL(meta.metaValue("meta2"), meta2.metaValue("meta2")); + + // Register the remaining types. + StringMetadata::registerType(); + DoubleMetadata::registerType(); + + { + // Now seek to beginning and read again. + istr.seekg(0, std::ios_base::beg); + meta2.clearMetadata(); + + CPPUNIT_ASSERT_NO_THROW(meta2.readMeta(istr)); + CPPUNIT_ASSERT_EQUAL(meta.metaCount(), meta2.metaCount()); + + std::string val = meta.metaValue("meta1"); + std::string val2 = meta2.metaValue("meta1"); + CPPUNIT_ASSERT_EQUAL(0, val.compare(val2)); + + int intval = meta.metaValue("meta2"); + int intval2 = meta2.metaValue("meta2"); + CPPUNIT_ASSERT_EQUAL(intval, intval2); + + double dval = meta.metaValue("meta3"); + double dval2 = meta2.metaValue("meta3"); + CPPUNIT_ASSERT_DOUBLES_EQUAL(dval, dval2,0); + } + { +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + // Verify that metadata that was written as UnknownMetadata can + // be read as typed metadata once the underlying types are registered. + std::istringstream istrUnknown(ostrUnknown.str(), std::ios_base::binary); + + meta2.clearMetadata(); + CPPUNIT_ASSERT_NO_THROW(meta2.readMeta(istrUnknown)); + + CPPUNIT_ASSERT_EQUAL(meta.metaCount(), meta2.metaCount()); + CPPUNIT_ASSERT_EQUAL( + meta.metaValue("meta1"), meta2.metaValue("meta1")); + CPPUNIT_ASSERT_EQUAL(meta.metaValue("meta2"), meta2.metaValue("meta2")); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + meta.metaValue("meta3"), meta2.metaValue("meta3"), 0.0); +#endif + } + + // Clear the registry once the test is done. + Metadata::clearRegistry(); +} + +void +TestMetaMap::testEmptyIO() +{ + using namespace openvdb; + + MetaMap meta; + + // Write out an empty metadata + std::ostringstream ostr(std::ios_base::binary); + + // Read in the metadata; + MetaMap meta2; + std::istringstream istr(ostr.str(), std::ios_base::binary); + CPPUNIT_ASSERT_NO_THROW(meta2.readMeta(istr)); + + CPPUNIT_ASSERT(meta2.metaCount() == 0); +} + +void +TestMetaMap::testCopyConstructor() +{ + using namespace openvdb; + + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", FloatMetadata(2.0)); + + // copy constructor + MetaMap meta2(meta); + + CPPUNIT_ASSERT(meta.metaCount() == meta2.metaCount()); + + std::string str = meta.metaValue("meta1"); + std::string str2 = meta2.metaValue("meta1"); + CPPUNIT_ASSERT(str == str2); + + CPPUNIT_ASSERT(meta.metaValue("meta2") == + meta2.metaValue("meta2")); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(meta.metaValue("meta3"), + meta2.metaValue("meta3"),0); + //CPPUNIT_ASSERT(meta.metaValue("meta3") == + // meta2.metaValue("meta3")); +} + + +void +TestMetaMap::testCopyConstructorEmpty() +{ + using namespace openvdb; + + MetaMap meta; + + MetaMap meta2(meta); + + CPPUNIT_ASSERT(meta.metaCount() == 0); + CPPUNIT_ASSERT(meta2.metaCount() == meta.metaCount()); +} + + +void +TestMetaMap::testAssignment() +{ + using namespace openvdb; + + // Populate a map with data. + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", FloatMetadata(2.0)); + + // Create an empty map. + MetaMap meta2; + CPPUNIT_ASSERT_EQUAL(0, int(meta2.metaCount())); + + // Copy the first map to the second. + meta2 = meta; + CPPUNIT_ASSERT_EQUAL(meta.metaCount(), meta2.metaCount()); + + // Verify that the contents of the two maps are the same. + CPPUNIT_ASSERT_EQUAL( + meta.metaValue("meta1"), meta2.metaValue("meta1")); + CPPUNIT_ASSERT_EQUAL(meta.metaValue("meta2"), meta2.metaValue("meta2")); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + meta.metaValue("meta3"), meta2.metaValue("meta3"), /*tolerance=*/0); + + // Verify that changing one map doesn't affect the other. + meta.insertMeta("meta1", StringMetadata("changed")); + std::string str = meta.metaValue("meta1"); + CPPUNIT_ASSERT_EQUAL(std::string("testing"), meta2.metaValue("meta1")); +} + + +void +TestMetaMap::testEquality() +{ + using namespace openvdb; + + // Populate a map with data. + MetaMap meta; + meta.insertMeta("meta1", StringMetadata("testing")); + meta.insertMeta("meta2", Int32Metadata(20)); + meta.insertMeta("meta3", FloatMetadata(3.14159f)); + + // Create an empty map. + MetaMap meta2; + + // Verify that the two maps differ. + CPPUNIT_ASSERT(meta != meta2); + CPPUNIT_ASSERT(meta2 != meta); + + // Copy the first map to the second. + meta2 = meta; + + // Verify that the two maps are equivalent. + CPPUNIT_ASSERT(meta == meta2); + CPPUNIT_ASSERT(meta2 == meta); + + // Modify the first map. + meta.removeMeta("meta1"); + meta.insertMeta("abc", DoubleMetadata(2.0)); + + // Verify that the two maps differ. + CPPUNIT_ASSERT(meta != meta2); + CPPUNIT_ASSERT(meta2 != meta); + + // Modify the second map and verify that the two maps differ. + meta2 = meta; + meta2.insertMeta("meta2", Int32Metadata(42)); + CPPUNIT_ASSERT(meta != meta2); + CPPUNIT_ASSERT(meta2 != meta); + + meta2 = meta; + meta2.insertMeta("meta3", FloatMetadata(2.0001f)); + CPPUNIT_ASSERT(meta != meta2); + CPPUNIT_ASSERT(meta2 != meta); + + meta2 = meta; + meta2.insertMeta("abc", DoubleMetadata(2.0001)); + CPPUNIT_ASSERT(meta != meta2); + CPPUNIT_ASSERT(meta2 != meta); +} diff --git a/openvdb/unittest/TestMetadata.cc b/openvdb/unittest/TestMetadata.cc new file mode 100644 index 00000000..3a180772 --- /dev/null +++ b/openvdb/unittest/TestMetadata.cc @@ -0,0 +1,163 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + + +class TestMetadata: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::Metadata::clearRegistry(); } + void tearDown() override { openvdb::Metadata::clearRegistry(); } + + CPPUNIT_TEST_SUITE(TestMetadata); + CPPUNIT_TEST(testMetadataRegistry); + CPPUNIT_TEST(testMetadataAsBool); + CPPUNIT_TEST(testCustomMetadata); + CPPUNIT_TEST_SUITE_END(); + + void testMetadataRegistry(); + void testMetadataAsBool(); + void testCustomMetadata(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadata); + + +void +TestMetadata::testMetadataRegistry() +{ + using namespace openvdb; + + Int32Metadata::registerType(); + + StringMetadata strMetadata; + + CPPUNIT_ASSERT(!Metadata::isRegisteredType(strMetadata.typeName())); + + StringMetadata::registerType(); + + CPPUNIT_ASSERT(Metadata::isRegisteredType(strMetadata.typeName())); + CPPUNIT_ASSERT(Metadata::isRegisteredType(Int32Metadata::staticTypeName())); + + Metadata::Ptr stringMetadata = Metadata::createMetadata(strMetadata.typeName()); + + CPPUNIT_ASSERT(stringMetadata->typeName() == strMetadata.typeName()); + + StringMetadata::unregisterType(); + + CPPUNIT_ASSERT_THROW(Metadata::createMetadata(strMetadata.typeName()), openvdb::LookupError); +} + +void +TestMetadata::testMetadataAsBool() +{ + using namespace openvdb; + + { + FloatMetadata meta(0.0); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue(1.0); + CPPUNIT_ASSERT(meta.asBool()); + meta.setValue(-1.0); + CPPUNIT_ASSERT(meta.asBool()); + meta.setValue(999.0); + CPPUNIT_ASSERT(meta.asBool()); + } + { + Int32Metadata meta(0); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue(1); + CPPUNIT_ASSERT(meta.asBool()); + meta.setValue(-1); + CPPUNIT_ASSERT(meta.asBool()); + meta.setValue(999); + CPPUNIT_ASSERT(meta.asBool()); + } + { + StringMetadata meta(""); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue("abc"); + CPPUNIT_ASSERT(meta.asBool()); + } + { + Vec3IMetadata meta(Vec3i(0)); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue(Vec3i(-1, 0, 1)); + CPPUNIT_ASSERT(meta.asBool()); + } + { + Vec3SMetadata meta(Vec3s(0.0)); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue(Vec3s(-1.0, 0.0, 1.0)); + CPPUNIT_ASSERT(meta.asBool()); + } + { + Vec4DMetadata meta(Vec4d(0.0)); + CPPUNIT_ASSERT(!meta.asBool()); + meta.setValue(Vec4d(1.0)); + CPPUNIT_ASSERT(meta.asBool()); + } +} + + +void +TestMetadata::testCustomMetadata() +{ + using namespace openvdb; + + const Vec3i expected(1, 2, 3); + std::ostringstream ostr(std::ios_base::binary); + { + Vec3IMetadata::registerType(); + Vec3IMetadata meta(expected); + + // Write Vec3I metadata to a byte string. + meta.write(ostr); + } + + // Unregister Vec3I metadata. + Metadata::clearRegistry(); + +#if OPENVDB_ABI_VERSION_NUMBER >= 5 + { + std::istringstream istr(ostr.str(), std::ios_base::binary); + + UnknownMetadata meta; + // Verify that metadata of an unregistered type can be read successfully. + CPPUNIT_ASSERT_NO_THROW(meta.read(istr)); + + // Verify that the metadata matches the original vector value. + CPPUNIT_ASSERT_EQUAL(sizeof(Vec3i), size_t(meta.size())); + CPPUNIT_ASSERT(meta.value().size() == size_t(meta.size())); + CPPUNIT_ASSERT_EQUAL(expected, *reinterpret_cast(&meta.value()[0])); + + ostr.str(""); + meta.write(ostr); + + // Verify that UnknownMetadata can be copied. + auto metaPtr = meta.copy(); + CPPUNIT_ASSERT(metaPtr.get() != nullptr); + CPPUNIT_ASSERT(meta == *metaPtr); + + // Verify that typed metadata can be copied into UnknownMetadata. + meta.copy(Vec3IMetadata(expected)); + CPPUNIT_ASSERT_EQUAL(sizeof(expected), size_t(meta.size())); + const auto* ptr = reinterpret_cast(&expected); + CPPUNIT_ASSERT(UnknownMetadata::ByteVec(ptr, ptr + sizeof(expected)) == meta.value()); + } +#endif + + Vec3IMetadata::registerType(); + + { + std::istringstream istr(ostr.str(), std::ios_base::binary); + Vec3IMetadata meta; + meta.read(istr); + + CPPUNIT_ASSERT_EQUAL(expected, meta.value()); + } +} diff --git a/openvdb/unittest/TestMetadataIO.cc b/openvdb/unittest/TestMetadataIO.cc new file mode 100644 index 00000000..e18bcc58 --- /dev/null +++ b/openvdb/unittest/TestMetadataIO.cc @@ -0,0 +1,127 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +// CPPUNIT_TEST_SUITE() invokes CPPUNIT_TESTNAMER_DECL() to generate a suite name +// from the FixtureType. But if FixtureType is a templated type, the generated name +// can become long and messy. This macro overrides the normal naming logic, +// instead invoking FixtureType::testSuiteName(), which should be a static member +// function that returns a std::string containing the suite name for the specific +// template instantiation. +#undef CPPUNIT_TESTNAMER_DECL +#define CPPUNIT_TESTNAMER_DECL( variableName, FixtureType ) \ + CPPUNIT_NS::TestNamer variableName( FixtureType::testSuiteName() ) + +template +class TestMetadataIO: public CppUnit::TestCase +{ +public: + static std::string testSuiteName() + { + std::string name = openvdb::typeNameAsString(); + if (!name.empty()) name[0] = static_cast(::toupper(name[0])); + return "TestMetadataIO" + name; + } + + CPPUNIT_TEST_SUITE(TestMetadataIO); + CPPUNIT_TEST(test); + CPPUNIT_TEST(testMultiple); + CPPUNIT_TEST_SUITE_END(); + + void test(); + void testMultiple(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); +CPPUNIT_TEST_SUITE_REGISTRATION(TestMetadataIO); + + +namespace { + +template struct Value { static T create(int i) { return T(i); } }; + +template<> struct Value { + static std::string create(int i) { return "test" + std::to_string(i); } +}; + +template struct Value> { + using ValueType = openvdb::math::Vec2; + static ValueType create(int i) { return ValueType(i, i+1); } +}; +template struct Value> { + using ValueType = openvdb::math::Vec3; + static ValueType create(int i) { return ValueType(i, i+1, i+2); } +}; +template struct Value> { + using ValueType = openvdb::math::Vec4; + static ValueType create(int i) { return ValueType(i, i+1, i+2, i+3); } +}; + +} + + +template +void +TestMetadataIO::test() +{ + using namespace openvdb; + + const T val = Value::create(1); + TypedMetadata m(val); + + std::ostringstream ostr(std::ios_base::binary); + + m.write(ostr); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + TypedMetadata tm; + tm.read(istr); + + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + + CPPUNIT_ASSERT_EQUAL(val, tm.value()); + + OPENVDB_NO_FP_EQUALITY_WARNING_END +} + + +template +void +TestMetadataIO::testMultiple() +{ + using namespace openvdb; + + const T val1 = Value::create(1), val2 = Value::create(2); + TypedMetadata m1(val1); + TypedMetadata m2(val2); + + std::ostringstream ostr(std::ios_base::binary); + + m1.write(ostr); + m2.write(ostr); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + TypedMetadata tm1, tm2; + tm1.read(istr); + tm2.read(istr); + + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + + CPPUNIT_ASSERT_EQUAL(val1, tm1.value()); + CPPUNIT_ASSERT_EQUAL(val2, tm2.value()); + + OPENVDB_NO_FP_EQUALITY_WARNING_END +} diff --git a/openvdb/unittest/TestMultiResGrid.cc b/openvdb/unittest/TestMultiResGrid.cc new file mode 100644 index 00000000..6ff952b5 --- /dev/null +++ b/openvdb/unittest/TestMultiResGrid.cc @@ -0,0 +1,341 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include // for remove() + +class TestMultiResGrid : public CppUnit::TestCase +{ + // Use to test logic in openvdb::tools::MultiResGrid + struct CoordMask { + static int Mask(int i, int j, int k) { return (i & 1) | ((j & 1) << 1) | ((k & 1) << 2); } + CoordMask() : mask(0) {} + CoordMask(const openvdb::Coord &c ) : mask( Mask(c[0],c[1],c[2]) ) {} + inline void setCoord(int i, int j, int k) { mask = Mask(i,j,k); } + inline void setCoord(const openvdb::Coord &c) { mask = Mask(c[0],c[1],c[2]); } + inline bool allEven() const { return mask == 0; } + inline bool xOdd() const { return mask == 1; } + inline bool yOdd() const { return mask == 2; } + inline bool zOdd() const { return mask == 4; } + inline bool xyOdd() const { return mask == 3; } + inline bool xzOdd() const { return mask == 5; } + inline bool yzOdd() const { return mask == 6; } + inline bool allOdd() const { return mask == 7; } + int mask; + };// CoordMask + +public: + CPPUNIT_TEST_SUITE(TestMultiResGrid); + CPPUNIT_TEST(testTwosComplement); + CPPUNIT_TEST(testCoordMask); + CPPUNIT_TEST(testManualTopology); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testModels); + CPPUNIT_TEST_SUITE_END(); + + void testTwosComplement(); + void testCoordMask(); + void testManualTopology(); + void testIO(); + void testModels(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestMultiResGrid); + +// Uncomment to test on models from our web-site +//#define TestMultiResGrid_DATA_PATH "/home/kmu/src/openvdb/data/" +//#define TestMultiResGrid_DATA_PATH "/usr/pic1/Data/OpenVDB/LevelSetModels/" + +void +TestMultiResGrid::testTwosComplement() +{ + // test bit-operations that assume 2's complement representation of negative integers + CPPUNIT_ASSERT_EQUAL( 1, 13 & 1 );// odd + CPPUNIT_ASSERT_EQUAL( 1,-13 & 1 );// odd + CPPUNIT_ASSERT_EQUAL( 0, 12 & 1 );// even + CPPUNIT_ASSERT_EQUAL( 0,-12 & 1 );// even + CPPUNIT_ASSERT_EQUAL( 0, 0 & 1 );// even + for (int i=-50; i<=50; ++i) { + if ( (i % 2) == 0 ) {//i.e. even number + CPPUNIT_ASSERT_EQUAL( 0, i & 1); + CPPUNIT_ASSERT_EQUAL( i, (i >> 1) << 1 ); + } else {//i.e. odd number + CPPUNIT_ASSERT_EQUAL( 1, i & 1); + CPPUNIT_ASSERT( i != (i >> 1) << 1 ); + } + } +} + + +void +TestMultiResGrid::testCoordMask() +{ + using namespace openvdb; + CoordMask mask; + + mask.setCoord(-4, 2, 18); + CPPUNIT_ASSERT(mask.allEven()); + + mask.setCoord(1, 2, -6); + CPPUNIT_ASSERT(mask.xOdd()); + + mask.setCoord(4, -3, -6); + CPPUNIT_ASSERT(mask.yOdd()); + + mask.setCoord(-8, 2, -7); + CPPUNIT_ASSERT(mask.zOdd()); + + mask.setCoord(1, -3, 2); + CPPUNIT_ASSERT(mask.xyOdd()); + + mask.setCoord(1, 2, -7); + CPPUNIT_ASSERT(mask.xzOdd()); + + mask.setCoord(-10, 3, -3); + CPPUNIT_ASSERT(mask.yzOdd()); + + mask.setCoord(1, 3,-3); + CPPUNIT_ASSERT(mask.allOdd()); +} + +void +TestMultiResGrid::testManualTopology() +{ + // Perform tests when the sparsity (or topology) of the multiple grids is defined manually + using namespace openvdb; + + typedef tools::MultiResGrid MultiResGridT; + const double background = -1.0; + const size_t levels = 4; + + MultiResGridT::Ptr mrg(new MultiResGridT( levels, background)); + + CPPUNIT_ASSERT(mrg != nullptr); + CPPUNIT_ASSERT_EQUAL(levels , mrg->numLevels()); + CPPUNIT_ASSERT_EQUAL(size_t(0), mrg->finestLevel()); + CPPUNIT_ASSERT_EQUAL(levels-1, mrg->coarsestLevel()); + + // Define grid domain so they exactly overlap! + const int w = 16;//half-width of dense patch on the finest grid level + const CoordBBox bbox( Coord(-w), Coord(w) );// both inclusive + + // First check all trees against the background value + for (size_t level = 0; level < mrg->numLevels(); ++level) { + for (CoordBBox::Iterator iter(bbox>>level); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, + mrg->tree(level).getValue(*iter), /*tolerance=*/0.0); + } + } + + // Fill all trees according to a power of two refinement pattern + for (size_t level = 0; level < mrg->numLevels(); ++level) { + mrg->tree(level).fill( bbox>>level, double(level)); + mrg->tree(level).voxelizeActiveTiles();// avoid active tiles + // Check values + for (CoordBBox::Iterator iter(bbox>>level); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(level), + mrg->tree(level).getValue(*iter), /*tolerance=*/0.0); + } + //mrg->tree( level ).print(std::cerr, 2); + // Check bounding box of active voxels + CoordBBox bbox_actual;// Expected Tree dimensions: 33^3 -> 17^3 -> 9^3 ->5^3 + mrg->tree( level ).evalActiveVoxelBoundingBox( bbox_actual ); + CPPUNIT_ASSERT_EQUAL( bbox >> level, bbox_actual ); + } + + //pick a grid point that is shared between all the grids + const Coord ijk(0); + + // Value at ijk equals the level + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->tree(2).getValue(ijk>>2), /*tolerance=*/ 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->sampleValue<0>(ijk, size_t(2)), /*tolerance=*/ 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->sampleValue<1>(ijk, size_t(2)), /*tolerance=*/ 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->sampleValue<2>(ijk, size_t(2)), /*tolerance=*/ 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->sampleValue<1>(ijk, 2.0f), /*tolerance=*/ 0.001); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, mrg->sampleValue<1>(ijk, float(2)), /*tolerance=*/ 0.001); + + // Value at ijk at floating point level + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.25, mrg->sampleValue<1>(ijk, 2.25f), /*tolerance=*/ 0.001); + + // Value at a floating-point position close to ijk and a floating point level + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.25, + mrg->sampleValue<1>(Vec3R(0.124), 2.25f), /*tolerance=*/ 0.001); + + // prolongate at a given point at top level + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, mrg->prolongateVoxel(ijk, 0), /*tolerance=*/ 0.0); + + // First check the coarsest level (3) + for (CoordBBox::Iterator iter(bbox>>size_t(3)); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, mrg->tree(3).getValue(*iter), /*tolerance=*/0.0); + } + + // Prolongate from level 3 -> level 2 and check values + mrg->prolongateActiveVoxels(2); + for (CoordBBox::Iterator iter(bbox>>size_t(2)); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, mrg->tree(2).getValue(*iter), /*tolerance=*/0.0); + } + + // Prolongate from level 2 -> level 1 and check values + mrg->prolongateActiveVoxels(1); + for (CoordBBox::Iterator iter(bbox>>size_t(1)); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, mrg->tree(1).getValue(*iter), /*tolerance=*/0.0); + } + + // Prolongate from level 1 -> level 0 and check values + mrg->prolongateActiveVoxels(0); + for (CoordBBox::Iterator iter(bbox); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, mrg->tree(0).getValue(*iter), /*tolerance=*/0.0); + } + + // Redefine values at the finest level and check values + mrg->finestTree().fill( bbox, 5.0 ); + mrg->finestTree().voxelizeActiveTiles();// avoid active tiles + for (CoordBBox::Iterator iter(bbox); iter; ++iter) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0, mrg->tree(0).getValue(*iter), /*tolerance=*/0.0); + } + + // USE RESTRICTION BY INJECTION since it doesn't have boundary issues + // // Restrict from level 0 -> level 1 and check values + // mrg->restrictActiveVoxels(1); + // for (CoordBBox::Iterator iter((bbox>>1UL).expandBy(-1)); iter; ++iter) { + // CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0, mrg->tree(1).getValue(*iter), /*tolerance=*/0.0); + // } + + // // Restrict from level 1 -> level 2 and check values + // mrg->restrictActiveVoxels(2); + // for (CoordBBox::Iterator iter(bbox>>2UL); iter; ++iter) { + // CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0, mrg->tree(2).getValue(*iter), /*tolerance=*/0.0); + // } + + // // Restrict from level 2 -> level 3 and check values + // mrg->restrictActiveVoxels(3); + // for (CoordBBox::Iterator iter(bbox>>3UL); iter; ++iter) { + // CPPUNIT_ASSERT_DOUBLES_EQUAL(5.0, mrg->tree(3).getValue(*iter), /*tolerance=*/0.0); + // } +} + +void +TestMultiResGrid::testIO() +{ + using namespace openvdb; + + const float radius = 1.0f; + const Vec3f center(0.0f, 0.0f, 0.0f); + const float voxelSize = 0.01f; + + openvdb::FloatGrid::Ptr ls = + openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + ls->setName("LevelSetSphere"); + + typedef tools::MultiResGrid MultiResGridT; + const size_t levels = 4; + + // Generate LOD sequence + MultiResGridT mrg( levels, *ls, /* reduction by injection */ false ); + //mrg.print( std::cout, 3 ); + + CPPUNIT_ASSERT_EQUAL(levels , mrg.numLevels()); + CPPUNIT_ASSERT_EQUAL(size_t(0), mrg.finestLevel()); + CPPUNIT_ASSERT_EQUAL(levels-1, mrg.coarsestLevel()); + + // Check inside and outside values + for ( size_t level = 1; level < mrg.numLevels(); ++level) { + const float inside = mrg.sampleValue<1>( Coord(0,0,0), 0UL, level ); + CPPUNIT_ASSERT_DOUBLES_EQUAL( -ls->background(), inside,/*tolerance=*/ 0.001 ); + const float outside = mrg.sampleValue<1>( Coord( int(1.1*radius/voxelSize) ), 0UL, level ); + CPPUNIT_ASSERT_DOUBLES_EQUAL( ls->background(), outside,/*tolerance=*/ 0.001 ); + } + + const std::string filename( "sphere.vdb" ); + + // Write grids + io::File outputFile( filename ); + outputFile.write( *mrg.grids() ); + outputFile.close(); + + // Read grids + openvdb::initialize(); + openvdb::io::File file( filename ); + file.open(); + GridPtrVecPtr grids = file.getGrids(); + CPPUNIT_ASSERT_EQUAL( levels, grids->size() ); + //std::cerr << "\nsize = " << grids->size() << std::endl; + for ( size_t i=0; isize(); ++i ) { + FloatGrid::Ptr grid = gridPtrCast(grids->at(i)); + CPPUNIT_ASSERT_EQUAL( grid->activeVoxelCount(), mrg.tree(i).activeVoxelCount() ); + //grid->print(std::cerr, 3); + } + file.close(); + + ::remove(filename.c_str()); +} + +void +TestMultiResGrid::testModels() +{ + using namespace openvdb; + +#ifdef TestMultiResGrid_DATA_PATH + initialize();//required whenever I/O of OpenVDB files is performed! + const std::string path(TestMultiResGrid_DATA_PATH); + std::vector filenames; + filenames.push_back("armadillo.vdb"); + filenames.push_back("buddha.vdb"); + filenames.push_back("bunny.vdb"); + filenames.push_back("crawler.vdb"); + filenames.push_back("dragon.vdb"); + filenames.push_back("iss.vdb"); + filenames.push_back("utahteapot.vdb"); + util::CpuTimer timer; + for ( size_t i=0; i\"" << filenames[i] + << "\" =====================" << std::endl; + std::cerr << "Reading \"" << filenames[i] << "\" ..."; + io::File file( path + filenames[i] ); + file.open(false);//disable delayed loading + FloatGrid::Ptr model = gridPtrCast(file.getGrids()->at(0)); + std::cerr << " done\nProcessing \"" << filenames[i] << "\" ..."; + timer.start("\nMultiResGrid processing"); + tools::MultiResGrid mrg( 6, model ); + timer.stop(); + std::cerr << "\n High-res level set " << tools::checkLevelSet(*mrg.grid(0)) << "\n"; + std::cerr << " done\nWriting \"" << filenames[i] << "\" ..."; + + io::File file( "/tmp/" + filenames[i] ); + file.write( *mrg.grids() ); + file.close(); + + std::cerr << " done\n" << std::endl; + // {// in-betweening + // timer.start("\nIn-betweening"); + // FloatGrid::Ptr model3 = mrg.createGrid( 1.9999f ); + // timer.stop(); + // // + // std::cerr << "\n" << tools::checkLevelSet(*model3) << "\n"; + // // + // GridPtrVecPtr grids2( new GridPtrVec ); + // grids2->push_back( model3 ); + // io::File file2( "/tmp/inbetween_" + filenames[i] ); + // file2.write( *grids2 ); + // file2.close(); + // } + // {// prolongate + // timer.start("\nProlongate"); + // mrg.prolongateActiveVoxels(1); + // FloatGrid::Ptr model31= mrg.grid(1); + // timer.stop(); + // GridPtrVecPtr grids2( new GridPtrVec ); + // grids2->push_back( model31 ); + // io::File file2( "/tmp/prolongate_" + filenames[i] ); + // file2.write( *grids2 ); + // file2.close(); + // } + //::remove(filenames[i].c_str()); + } +#endif +} diff --git a/openvdb/unittest/TestName.cc b/openvdb/unittest/TestName.cc new file mode 100644 index 00000000..1fa5fbcc --- /dev/null +++ b/openvdb/unittest/TestName.cc @@ -0,0 +1,81 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestName : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestName); + CPPUNIT_TEST(test); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testMultipleIO); + CPPUNIT_TEST_SUITE_END(); + + void test(); + void testIO(); + void testMultipleIO(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestName); + +void +TestName::test() +{ + using namespace openvdb; + + Name name; + Name name2("something"); + Name name3 = std::string("something2"); + name = "something"; + + CPPUNIT_ASSERT(name == name2); + CPPUNIT_ASSERT(name != name3); + CPPUNIT_ASSERT(name != Name("testing")); + CPPUNIT_ASSERT(name == Name("something")); +} + +void +TestName::testIO() +{ + using namespace openvdb; + + Name name("some name that i made up"); + + std::ostringstream ostr(std::ios_base::binary); + + openvdb::writeString(ostr, name); + + name = "some other name"; + + CPPUNIT_ASSERT(name == Name("some other name")); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + name = openvdb::readString(istr); + + CPPUNIT_ASSERT(name == Name("some name that i made up")); +} + +void +TestName::testMultipleIO() +{ + using namespace openvdb; + + Name name("some name that i made up"); + Name name2("something else"); + + std::ostringstream ostr(std::ios_base::binary); + + openvdb::writeString(ostr, name); + openvdb::writeString(ostr, name2); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + + Name n = openvdb::readString(istr), n2 = openvdb::readString(istr); + + CPPUNIT_ASSERT(name == n); + CPPUNIT_ASSERT(name2 == n2); +} diff --git a/openvdb/unittest/TestNodeIterator.cc b/openvdb/unittest/TestNodeIterator.cc new file mode 100644 index 00000000..605f2cb1 --- /dev/null +++ b/openvdb/unittest/TestNodeIterator.cc @@ -0,0 +1,375 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + + +class TestNodeIterator: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestNodeIterator); + CPPUNIT_TEST(testEmpty); + CPPUNIT_TEST(testSinglePositive); + CPPUNIT_TEST(testSingleNegative); + CPPUNIT_TEST(testMultipleBlocks); + CPPUNIT_TEST(testDepthBounds); + CPPUNIT_TEST_SUITE_END(); + + void testEmpty(); + void testSinglePositive(); + void testSingleNegative(); + void testMultipleBlocks(); + void testDepthBounds(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestNodeIterator); + +namespace { +typedef openvdb::tree::Tree4::Type Tree323f; +} + + +//////////////////////////////////////// + + +void +TestNodeIterator::testEmpty() +{ + Tree323f tree(/*fillValue=*/256.0f); + { + Tree323f::NodeCIter iter(tree); + CPPUNIT_ASSERT(!iter.next()); + } + { + tree.setValue(openvdb::Coord(8, 16, 24), 10.f); + Tree323f::NodeIter iter(tree); // non-const + CPPUNIT_ASSERT(iter); + + // Try modifying the tree through a non-const iterator. + Tree323f::RootNodeType* root = NULL; + iter.getNode(root); + CPPUNIT_ASSERT(root != NULL); + root->clear(); + + // Verify that the tree is now empty. + iter = Tree323f::NodeIter(tree); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT(!iter.next()); + } +} + + +void +TestNodeIterator::testSinglePositive() +{ + { + Tree323f tree(/*fillValue=*/256.0f); + + tree.setValue(openvdb::Coord(8, 16, 24), 10.f); + + Tree323f::NodeCIter iter(tree); + + CPPUNIT_ASSERT(Tree323f::LeafNodeType::DIM == 8); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getDepth()); + CPPUNIT_ASSERT_EQUAL(tree.treeDepth(), 1 + iter.getLevel()); + openvdb::CoordBBox range, bbox; + tree.getIndexRange(range); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(bbox.min(), range.min()); + CPPUNIT_ASSERT_EQUAL(bbox.max(), range.max()); + + // Descend to the depth-1 internal node with bounding box + // (0, 0, 0) -> (255, 255, 255) containing voxel (8, 16, 24). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord((1 << (3 + 2 + 3)) - 1), bbox.max()); + + // Descend to the depth-2 internal node with bounding box + // (0, 0, 0) -> (31, 31, 31) containing voxel (8, 16, 24). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord((1 << (2 + 3)) - 1), bbox.max()); + + // Descend to the leaf node with bounding box (8, 16, 24) -> (15, 23, 31) + // containing voxel (8, 16, 24). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + iter.getBoundingBox(bbox); + range.min().reset(8, 16, 24); + range.max() = range.min().offsetBy((1 << 3) - 1); // add leaf node size + CPPUNIT_ASSERT_EQUAL(range.min(), bbox.min()); + CPPUNIT_ASSERT_EQUAL(range.max(), bbox.max()); + + iter.next(); + CPPUNIT_ASSERT(!iter); + } + { + Tree323f tree(/*fillValue=*/256.0f); + + tree.setValue(openvdb::Coord(129), 10.f); + + Tree323f::NodeCIter iter(tree); + + CPPUNIT_ASSERT(Tree323f::LeafNodeType::DIM == 8); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getDepth()); + CPPUNIT_ASSERT_EQUAL(tree.treeDepth(), 1 + iter.getLevel()); + openvdb::CoordBBox range, bbox; + tree.getIndexRange(range); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(bbox.min(), range.min()); + CPPUNIT_ASSERT_EQUAL(bbox.max(), range.max()); + + // Descend to the depth-1 internal node with bounding box + // (0, 0, 0) -> (255, 255, 255) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord((1 << (3 + 2 + 3)) - 1), bbox.max()); + + // Descend to the depth-2 internal node with bounding box + // (128, 128, 128) -> (159, 159, 159) containing voxel (129, 129, 129). + // (128 is the nearest multiple of 32 less than 129.) + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + iter.getBoundingBox(bbox); + range.min().reset(128, 128, 128); + CPPUNIT_ASSERT_EQUAL(range.min(), bbox.min()); + CPPUNIT_ASSERT_EQUAL(range.min().offsetBy((1 << (2 + 3)) - 1), bbox.max()); + + // Descend to the leaf node with bounding box + // (128, 128, 128) -> (135, 135, 135) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + iter.getBoundingBox(bbox); + range.max() = range.min().offsetBy((1 << 3) - 1); // add leaf node size + CPPUNIT_ASSERT_EQUAL(range.min(), bbox.min()); + CPPUNIT_ASSERT_EQUAL(range.max(), bbox.max()); + + iter.next(); + CPPUNIT_ASSERT(!iter); + } +} + + +void +TestNodeIterator::testSingleNegative() +{ + Tree323f tree(/*fillValue=*/256.0f); + + tree.setValue(openvdb::Coord(-1), 10.f); + + Tree323f::NodeCIter iter(tree); + + CPPUNIT_ASSERT(Tree323f::LeafNodeType::DIM == 8); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getDepth()); + CPPUNIT_ASSERT_EQUAL(tree.treeDepth(), 1 + iter.getLevel()); + openvdb::CoordBBox range, bbox; + tree.getIndexRange(range); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(bbox.min(), range.min()); + CPPUNIT_ASSERT_EQUAL(bbox.max(), range.max()); + + // Descend to the depth-1 internal node with bounding box + // (-256, -256, -256) -> (-1, -1, -1) containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-(1 << (3 + 2 + 3))), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-1), bbox.max()); + + // Descend to the depth-2 internal node with bounding box + // (-32, -32, -32) -> (-1, -1, -1) containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-(1 << (2 + 3))), bbox.min()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(-1), bbox.max()); + + // Descend to the leaf node with bounding box (-8, -8, -8) -> (-1, -1, -1) + // containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + iter.getBoundingBox(bbox); + range.max().reset(-1, -1, -1); + range.min() = range.max().offsetBy(-((1 << 3) - 1)); // add leaf node size + CPPUNIT_ASSERT_EQUAL(range.min(), bbox.min()); + CPPUNIT_ASSERT_EQUAL(range.max(), bbox.max()); + + iter.next(); + CPPUNIT_ASSERT(!iter); +} + + +void +TestNodeIterator::testMultipleBlocks() +{ + Tree323f tree(/*fillValue=*/256.0f); + + tree.setValue(openvdb::Coord(-1), 10.f); + tree.setValue(openvdb::Coord(129), 10.f); + + Tree323f::NodeCIter iter(tree); + + CPPUNIT_ASSERT(Tree323f::LeafNodeType::DIM == 8); + + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getDepth()); + CPPUNIT_ASSERT_EQUAL(tree.treeDepth(), 1 + iter.getLevel()); + + // Descend to the depth-1 internal node with bounding box + // (-256, -256, -256) -> (-1, -1, -1) containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Descend to the depth-2 internal node with bounding box + // (-32, -32, -32) -> (-1, -1, -1) containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + + // Descend to the leaf node with bounding box (-8, -8, -8) -> (-1, -1, -1) + // containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + openvdb::Coord expectedMin, expectedMax(-1, -1, -1); + expectedMin = expectedMax.offsetBy(-((1 << 3) - 1)); // add leaf node size + openvdb::CoordBBox bbox; + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(expectedMin, bbox.min()); + CPPUNIT_ASSERT_EQUAL(expectedMax, bbox.max()); + + // Ascend to the depth-1 internal node with bounding box (0, 0, 0) -> (255, 255, 255) + // containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Descend to the depth-2 internal node with bounding box + // (128, 128, 128) -> (159, 159, 159) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + + // Descend to the leaf node with bounding box (128, 128, 128) -> (135, 135, 135) + // containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + expectedMin.reset(128, 128, 128); + expectedMax = expectedMin.offsetBy((1 << 3) - 1); // add leaf node size + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(expectedMin, bbox.min()); + CPPUNIT_ASSERT_EQUAL(expectedMax, bbox.max()); + + iter.next(); + CPPUNIT_ASSERT(!iter); +} + + +void +TestNodeIterator::testDepthBounds() +{ + Tree323f tree(/*fillValue=*/256.0f); + + tree.setValue(openvdb::Coord(-1), 10.f); + tree.setValue(openvdb::Coord(129), 10.f); + + { + // Iterate over internal nodes only. + Tree323f::NodeCIter iter(tree); + iter.setMaxDepth(2); + iter.setMinDepth(1); + + // Begin at the depth-1 internal node with bounding box + // (-256, -256, -256) -> (-1, -1, -1) containing voxel (-1, -1, -1). + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Descend to the depth-2 internal node with bounding box + // (-32, -32, -32) -> (-1, -1, -1) containing voxel (-1, -1, -1). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + + // Skipping the leaf node, ascend to the depth-1 internal node with bounding box + // (0, 0, 0) -> (255, 255, 255) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Descend to the depth-2 internal node with bounding box + // (128, 128, 128) -> (159, 159, 159) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(2U, iter.getDepth()); + + // Verify that no internal nodes remain unvisited. + iter.next(); + CPPUNIT_ASSERT(!iter); + } + { + // Iterate over depth-1 internal nodes only. + Tree323f::NodeCIter iter(tree); + iter.setMaxDepth(1); + iter.setMinDepth(1); + + // Begin at the depth-1 internal node with bounding box + // (-256, -256, -256) -> (-1, -1, -1) containing voxel (-1, -1, -1). + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Skip to the depth-1 internal node with bounding box + // (0, 0, 0) -> (255, 255, 255) containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(1U, iter.getDepth()); + + // Verify that no depth-1 nodes remain unvisited. + iter.next(); + CPPUNIT_ASSERT(!iter); + } + { + // Iterate over leaf nodes only. + Tree323f::NodeCIter iter = tree.cbeginNode(); + iter.setMaxDepth(3); + iter.setMinDepth(3); + + // Begin at the leaf node with bounding box (-8, -8, -8) -> (-1, -1, -1) + // containing voxel (-1, -1, -1). + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + + // Skip to the leaf node with bounding box (128, 128, 128) -> (135, 135, 135) + // containing voxel (129, 129, 129). + iter.next(); + CPPUNIT_ASSERT(iter); + CPPUNIT_ASSERT_EQUAL(0U, iter.getLevel()); + + // Verify that no leaf nodes remain unvisited. + iter.next(); + CPPUNIT_ASSERT(!iter); + } +} diff --git a/openvdb/unittest/TestNodeManager.cc b/openvdb/unittest/TestNodeManager.cc new file mode 100644 index 00000000..17b2f2c4 --- /dev/null +++ b/openvdb/unittest/TestNodeManager.cc @@ -0,0 +1,153 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include + + +class TestNodeManager: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestNodeManager); + CPPUNIT_TEST(testAll); + CPPUNIT_TEST_SUITE_END(); + + void testAll(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestNodeManager); + + +namespace { + +template +struct NodeCountOp { + NodeCountOp() : nodeCount(TreeT::DEPTH, 0), totalCount(0) + { + } + NodeCountOp(const NodeCountOp&, tbb::split) + : nodeCount(TreeT::DEPTH, 0), totalCount(0) + { + } + void join(const NodeCountOp& other) + { + for (size_t i = 0; i < nodeCount.size(); ++i) { + nodeCount[i] += other.nodeCount[i]; + } + totalCount += other.totalCount; + } + // do nothing for the root node + void operator()(const typename TreeT::RootNodeType&) + { + } + // count the internal and leaf nodes + template + void operator()(const NodeT&) + { + ++(nodeCount[NodeT::LEVEL]); + ++totalCount; + } + std::vector nodeCount; + openvdb::Index64 totalCount; +};// NodeCountOp + +}//unnamed namespace + +void +TestNodeManager::testAll() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Vec3f; + using openvdb::Index64; + using openvdb::FloatGrid; + using openvdb::FloatTree; + + const Vec3f center(0.35f, 0.35f, 0.35f); + const float radius = 0.15f; + const int dim = 128, half_width = 5; + const float voxel_size = 1.0f/dim; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/half_width*voxel_size); + FloatTree& tree = grid->tree(); + grid->setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/voxel_size)); + + unittest_util::makeSphere(Coord(dim), center, + radius, *grid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + + CPPUNIT_ASSERT_EQUAL(4, int(FloatTree::DEPTH)); + CPPUNIT_ASSERT_EQUAL(3, int(openvdb::tree::NodeManager::LEVELS)); + + std::vector nodeCount; + for (openvdb::Index i=0; i& points, + const std::vector& radius) + : mPoints(&points) + , mRadius(&radius) + { + } + + // Return the number of points in the array + size_t size() const { + return mPoints->size(); + } + + // Return the world-space position for the nth particle. + void getPos(size_t n, PosType& xyz) const { + xyz = (*mPoints)[n]; + } + + // Return the world-space radius for the nth particle. + void getRadius(size_t n, ScalarType& radius) const { + radius = (*mRadius)[n]; + } + +protected: + std::vector const * const mPoints; + std::vector const * const mRadius; +}; // ParticleList + + +template +bool hasDuplicates(const std::vector& items) +{ + std::vector vec(items); + std::sort(vec.begin(), vec.end()); + + size_t duplicates = 0; + for (size_t n = 1, N = vec.size(); n < N; ++n) { + if (vec[n] == vec[n-1]) ++duplicates; + } + return duplicates != 0; +} + +} // namespace + + + +//////////////////////////////////////// + + +void +TestParticleAtlas::testParticleAtlas() +{ + // generate points + + const size_t numParticle = 40000; + const double minVoxelSize = 0.01; + + std::vector points; + unittest_util::genPoints(numParticle, points); + + std::vector radius; + for (size_t n = 0, N = points.size() / 2; n < N; ++n) { + radius.push_back(minVoxelSize); + } + + for (size_t n = points.size() / 2, N = points.size(); n < N; ++n) { + radius.push_back(minVoxelSize * 2.0); + } + + ParticleList particles(points, radius); + + // construct data structure + + typedef openvdb::tools::ParticleAtlas<> ParticleAtlas; + + ParticleAtlas atlas; + + CPPUNIT_ASSERT(atlas.empty()); + CPPUNIT_ASSERT(atlas.levels() == 0); + + atlas.construct(particles, minVoxelSize); + + CPPUNIT_ASSERT(!atlas.empty()); + CPPUNIT_ASSERT(atlas.levels() == 2); + + CPPUNIT_ASSERT( + openvdb::math::isApproxEqual(atlas.minRadius(0), minVoxelSize)); + + CPPUNIT_ASSERT( + openvdb::math::isApproxEqual(atlas.minRadius(1), minVoxelSize * 2.0)); + + typedef openvdb::tools::ParticleAtlas<>::Iterator ParticleAtlasIterator; + + ParticleAtlasIterator it(atlas); + + CPPUNIT_ASSERT(atlas.levels() == 2); + + std::vector indices; + indices.reserve(numParticle); + + it.updateFromLevel(0); + + CPPUNIT_ASSERT(it); + CPPUNIT_ASSERT_EQUAL(it.size(), numParticle - (points.size() / 2)); + + + for (; it; ++it) { + indices.push_back(*it); + } + + it.updateFromLevel(1); + + CPPUNIT_ASSERT(it); + CPPUNIT_ASSERT_EQUAL(it.size(), (points.size() / 2)); + + + for (; it; ++it) { + indices.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(numParticle, indices.size()); + + CPPUNIT_ASSERT(!hasDuplicates(indices)); + + + openvdb::Vec3R center = points[0]; + double searchRadius = minVoxelSize * 10.0; + + it.worldSpaceSearchAndUpdate(center, searchRadius, particles); + CPPUNIT_ASSERT(it); + + indices.clear(); + for (; it; ++it) { + indices.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(it.size(), indices.size()); + CPPUNIT_ASSERT(!hasDuplicates(indices)); + + + openvdb::BBoxd bbox; + for (size_t n = 0, N = points.size() / 2; n < N; ++n) { + bbox.expand(points[n]); + } + + it.worldSpaceSearchAndUpdate(bbox, particles); + CPPUNIT_ASSERT(it); + + indices.clear(); + for (; it; ++it) { + indices.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(it.size(), indices.size()); + CPPUNIT_ASSERT(!hasDuplicates(indices)); +} + diff --git a/openvdb/unittest/TestParticlesToLevelSet.cc b/openvdb/unittest/TestParticlesToLevelSet.cc new file mode 100644 index 00000000..006b74dc --- /dev/null +++ b/openvdb/unittest/TestParticlesToLevelSet.cc @@ -0,0 +1,580 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include // for sdfInteriorMask() +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + + +class TestParticlesToLevelSet: public CppUnit::TestFixture +{ +public: + virtual void setUp() {openvdb::initialize();} + virtual void tearDown() {openvdb::uninitialize();} + + void writeGrid(openvdb::GridBase::Ptr grid, std::string fileName) const + { + std::cout << "\nWriting \""<setName("TestParticlesToLevelSet"); + openvdb::GridPtrVec grids; + grids.push_back(grid); + openvdb::io::File file(fileName + ".vdb"); + file.write(grids); + file.close(); + } + + CPPUNIT_TEST_SUITE(TestParticlesToLevelSet); + CPPUNIT_TEST(testBlindData); + CPPUNIT_TEST(testMyParticleList); + CPPUNIT_TEST(testRasterizeSpheres); + CPPUNIT_TEST(testRasterizeSpheresAndId); + CPPUNIT_TEST(testRasterizeTrails); + CPPUNIT_TEST(testRasterizeTrailsAndId); + CPPUNIT_TEST(testMaskOutput); + CPPUNIT_TEST_SUITE_END(); + + void testBlindData(); + void testMyParticleList(); + void testRasterizeSpheres(); + void testRasterizeSpheresAndId(); + void testRasterizeTrails(); + void testRasterizeTrailsAndId(); + void testMaskOutput(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestParticlesToLevelSet); + +class MyParticleList +{ +protected: + struct MyParticle { + openvdb::Vec3R p, v; + openvdb::Real r; + }; + openvdb::Real mRadiusScale; + openvdb::Real mVelocityScale; + std::vector mParticleList; +public: + + typedef openvdb::Vec3R PosType; + + MyParticleList(openvdb::Real rScale=1, openvdb::Real vScale=1) + : mRadiusScale(rScale), mVelocityScale(vScale) {} + void add(const openvdb::Vec3R &p, const openvdb::Real &r, + const openvdb::Vec3R &v=openvdb::Vec3R(0,0,0)) + { + MyParticle pa; + pa.p = p; + pa.r = r; + pa.v = v; + mParticleList.push_back(pa); + } + /// @return coordinate bbox in the space of the specified transfrom + openvdb::CoordBBox getBBox(const openvdb::GridBase& grid) { + openvdb::CoordBBox bbox; + openvdb::Coord &min= bbox.min(), &max = bbox.max(); + openvdb::Vec3R pos; + openvdb::Real rad, invDx = 1/grid.voxelSize()[0]; + for (size_t n=0, e=this->size(); ngetPosRad(n, pos, rad); + const openvdb::Vec3d xyz = grid.worldToIndex(pos); + const openvdb::Real r = rad * invDx; + for (int i=0; i<3; ++i) { + min[i] = openvdb::math::Min(min[i], openvdb::math::Floor(xyz[i] - r)); + max[i] = openvdb::math::Max(max[i], openvdb::math::Ceil( xyz[i] + r)); + } + } + return bbox; + } + //typedef int AttributeType; + // The methods below are only required for the unit-tests + openvdb::Vec3R pos(int n) const {return mParticleList[n].p;} + openvdb::Vec3R vel(int n) const {return mVelocityScale*mParticleList[n].v;} + openvdb::Real radius(int n) const {return mRadiusScale*mParticleList[n].r;} + + ////////////////////////////////////////////////////////////////////////////// + /// The methods below are the only ones required by tools::ParticleToLevelSet + /// @note We return by value since the radius and velocities are modified + /// by the scaling factors! Also these methods are all assumed to + /// be thread-safe. + + /// Return the total number of particles in list. + /// Always required! + size_t size() const { return mParticleList.size(); } + + /// Get the world space position of n'th particle. + /// Required by ParticledToLevelSet::rasterizeSphere(*this,radius). + void getPos(size_t n, openvdb::Vec3R&pos) const { pos = mParticleList[n].p; } + + + void getPosRad(size_t n, openvdb::Vec3R& pos, openvdb::Real& rad) const { + pos = mParticleList[n].p; + rad = mRadiusScale*mParticleList[n].r; + } + void getPosRadVel(size_t n, openvdb::Vec3R& pos, openvdb::Real& rad, openvdb::Vec3R& vel) const { + pos = mParticleList[n].p; + rad = mRadiusScale*mParticleList[n].r; + vel = mVelocityScale*mParticleList[n].v; + } + // The method below is only required for attribute transfer + void getAtt(size_t n, openvdb::Index32& att) const { att = openvdb::Index32(n); } +}; + + +void +TestParticlesToLevelSet::testBlindData() +{ + using BlindTypeIF = openvdb::tools::p2ls_internal::BlindData; + + BlindTypeIF value(openvdb::Index(8), 5.2f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(8), value.visible()); + ASSERT_DOUBLES_EXACTLY_EQUAL(5.2f, value.blind()); + + BlindTypeIF value2(openvdb::Index(13), 1.6f); + + { // test equality + // only visible portion needs to be equal + BlindTypeIF blind(openvdb::Index(13), 6.7f); + CPPUNIT_ASSERT(value2 == blind); + } + + { // test addition of two blind types + BlindTypeIF blind = value + value2; + CPPUNIT_ASSERT_EQUAL(openvdb::Index(8+13), blind.visible()); + CPPUNIT_ASSERT_EQUAL(0.0f, blind.blind()); // blind values are both dropped + } + + { // test addition of blind type with visible type + BlindTypeIF blind = value + 3; + CPPUNIT_ASSERT_EQUAL(openvdb::Index(8+3), blind.visible()); + CPPUNIT_ASSERT_EQUAL(5.2f, blind.blind()); + } + + { // test addition of blind type with type that requires casting + // note that this will generate conversion warnings if not handled properly + BlindTypeIF blind = value + 3.7; + CPPUNIT_ASSERT_EQUAL(openvdb::Index(8+3), blind.visible()); + CPPUNIT_ASSERT_EQUAL(5.2f, blind.blind()); + } +} + + +void +TestParticlesToLevelSet::testMyParticleList() +{ + MyParticleList pa; + CPPUNIT_ASSERT_EQUAL(0, int(pa.size())); + pa.add(openvdb::Vec3R(10,10,10), 2, openvdb::Vec3R(1,0,0)); + CPPUNIT_ASSERT_EQUAL(1, int(pa.size())); + ASSERT_DOUBLES_EXACTLY_EQUAL(10, pa.pos(0)[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(10, pa.pos(0)[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(10, pa.pos(0)[2]); + ASSERT_DOUBLES_EXACTLY_EQUAL(1 , pa.vel(0)[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0 , pa.vel(0)[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0 , pa.vel(0)[2]); + ASSERT_DOUBLES_EXACTLY_EQUAL(2 , pa.radius(0)); + pa.add(openvdb::Vec3R(20,20,20), 3); + CPPUNIT_ASSERT_EQUAL(2, int(pa.size())); + ASSERT_DOUBLES_EXACTLY_EQUAL(20, pa.pos(1)[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20, pa.pos(1)[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(20, pa.pos(1)[2]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0 , pa.vel(1)[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0 , pa.vel(1)[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL(0 , pa.vel(1)[2]); + ASSERT_DOUBLES_EXACTLY_EQUAL(3 , pa.radius(1)); + + const float voxelSize = 0.5f, halfWidth = 4.0f; + openvdb::FloatGrid::Ptr ls = openvdb::createLevelSet(voxelSize, halfWidth); + openvdb::CoordBBox bbox = pa.getBBox(*ls); + ASSERT_DOUBLES_EXACTLY_EQUAL((10-2)/voxelSize, bbox.min()[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL((10-2)/voxelSize, bbox.min()[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL((10-2)/voxelSize, bbox.min()[2]); + ASSERT_DOUBLES_EXACTLY_EQUAL((20+3)/voxelSize, bbox.max()[0]); + ASSERT_DOUBLES_EXACTLY_EQUAL((20+3)/voxelSize, bbox.max()[1]); + ASSERT_DOUBLES_EXACTLY_EQUAL((20+3)/voxelSize, bbox.max()[2]); +} + + +void +TestParticlesToLevelSet::testRasterizeSpheres() +{ + MyParticleList pa; + pa.add(openvdb::Vec3R(10,10,10), 2); + pa.add(openvdb::Vec3R(20,20,20), 2); + // testing CSG + pa.add(openvdb::Vec3R(31.0,31,31), 5); + pa.add(openvdb::Vec3R(31.5,31,31), 5); + pa.add(openvdb::Vec3R(32.0,31,31), 5); + pa.add(openvdb::Vec3R(32.5,31,31), 5); + pa.add(openvdb::Vec3R(33.0,31,31), 5); + pa.add(openvdb::Vec3R(33.5,31,31), 5); + pa.add(openvdb::Vec3R(34.0,31,31), 5); + pa.add(openvdb::Vec3R(34.5,31,31), 5); + pa.add(openvdb::Vec3R(35.0,31,31), 5); + pa.add(openvdb::Vec3R(35.5,31,31), 5); + pa.add(openvdb::Vec3R(36.0,31,31), 5); + CPPUNIT_ASSERT_EQUAL(13, int(pa.size())); + + const float voxelSize = 1.0f, halfWidth = 2.0f; + openvdb::FloatGrid::Ptr ls = openvdb::createLevelSet(voxelSize, halfWidth); + openvdb::tools::ParticlesToLevelSet raster(*ls); + + raster.setGrainSize(1);//a value of zero disables threading + raster.rasterizeSpheres(pa); + raster.finalize(); + //openvdb::FloatGrid::Ptr ls = raster.getSdfGrid(); + + //ls->tree().print(std::cout,4); + //this->writeGrid(ls, "testRasterizeSpheres"); + + ASSERT_DOUBLES_EXACTLY_EQUAL(halfWidth * voxelSize, + ls->tree().getValue(openvdb::Coord( 0, 0, 0))); + + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord( 6,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord( 7,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord( 8,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord( 9,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-2, ls->tree().getValue(openvdb::Coord(10,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(11,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(12,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(13,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(14,10,10))); + + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(20,16,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(20,17,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(20,18,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(20,19,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-2, ls->tree().getValue(openvdb::Coord(20,20,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(20,21,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(20,22,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(20,23,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(20,24,20))); + {// full but slow test of all voxels + openvdb::CoordBBox bbox = pa.getBBox(*ls); + bbox.expand(static_cast(halfWidth)+1); + openvdb::Index64 count=0; + const float outside = ls->background(), inside = -outside; + const openvdb::Coord &min=bbox.min(), &max=bbox.max(); + for (openvdb::Coord ijk=min; ijk[0]indexToWorld(ijk.asVec3d()); + double dist = (xyz-pa.pos(0)).length()-pa.radius(0); + for (int i = 1, s = int(pa.size()); i < s; ++i) { + dist=openvdb::math::Min(dist,(xyz-pa.pos(i)).length()-pa.radius(i)); + } + const float val = ls->tree().getValue(ijk); + if (dist >= outside) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(outside, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + } else if( dist <= inside ) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(inside, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + } else { + CPPUNIT_ASSERT_DOUBLES_EQUAL( dist, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOn(ijk)); + ++count; + } + } + } + } + //std::cerr << "\nExpected active voxel count = " << count + // << ", actual active voxle count = " + // << ls->activeVoxelCount() << std::endl; + CPPUNIT_ASSERT_EQUAL(count, ls->activeVoxelCount()); + } +} + + +void +TestParticlesToLevelSet::testRasterizeSpheresAndId() +{ + MyParticleList pa(0.5f); + pa.add(openvdb::Vec3R(10,10,10), 4); + pa.add(openvdb::Vec3R(20,20,20), 4); + // testing CSG + pa.add(openvdb::Vec3R(31.0,31,31),10); + pa.add(openvdb::Vec3R(31.5,31,31),10); + pa.add(openvdb::Vec3R(32.0,31,31),10); + pa.add(openvdb::Vec3R(32.5,31,31),10); + pa.add(openvdb::Vec3R(33.0,31,31),10); + pa.add(openvdb::Vec3R(33.5,31,31),10); + pa.add(openvdb::Vec3R(34.0,31,31),10); + pa.add(openvdb::Vec3R(34.5,31,31),10); + pa.add(openvdb::Vec3R(35.0,31,31),10); + pa.add(openvdb::Vec3R(35.5,31,31),10); + pa.add(openvdb::Vec3R(36.0,31,31),10); + CPPUNIT_ASSERT_EQUAL(13, int(pa.size())); + + typedef openvdb::tools::ParticlesToLevelSet RasterT; + const float voxelSize = 1.0f, halfWidth = 2.0f; + openvdb::FloatGrid::Ptr ls = openvdb::createLevelSet(voxelSize, halfWidth); + + RasterT raster(*ls); + raster.setGrainSize(1);//a value of zero disables threading + raster.rasterizeSpheres(pa); + raster.finalize(); + const RasterT::AttGridType::Ptr id = raster.attributeGrid(); + + int minVal = std::numeric_limits::max(), maxVal = -minVal; + for (RasterT::AttGridType::ValueOnCIter i=id->cbeginValueOn(); i; ++i) { + minVal = openvdb::math::Min(minVal, int(*i)); + maxVal = openvdb::math::Max(maxVal, int(*i)); + } + CPPUNIT_ASSERT_EQUAL(0 , minVal); + CPPUNIT_ASSERT_EQUAL(12, maxVal); + + //grid.tree().print(std::cout,4); + //id->print(std::cout,4); + //this->writeGrid(ls, "testRasterizeSpheres"); + + ASSERT_DOUBLES_EXACTLY_EQUAL(halfWidth * voxelSize, + ls->tree().getValue(openvdb::Coord( 0, 0, 0))); + + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord( 6,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord( 7,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord( 8,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord( 9,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-2, ls->tree().getValue(openvdb::Coord(10,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(11,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(12,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(13,10,10))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(14,10,10))); + + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(20,16,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(20,17,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(20,18,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(20,19,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-2, ls->tree().getValue(openvdb::Coord(20,20,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(-1, ls->tree().getValue(openvdb::Coord(20,21,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 0, ls->tree().getValue(openvdb::Coord(20,22,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 1, ls->tree().getValue(openvdb::Coord(20,23,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL( 2, ls->tree().getValue(openvdb::Coord(20,24,20))); + + {// full but slow test of all voxels + openvdb::CoordBBox bbox = pa.getBBox(*ls); + bbox.expand(static_cast(halfWidth)+1); + openvdb::Index64 count = 0; + const float outside = ls->background(), inside = -outside; + const openvdb::Coord &min=bbox.min(), &max=bbox.max(); + for (openvdb::Coord ijk=min; ijk[0]indexToWorld(ijk.asVec3d()); + double dist = (xyz-pa.pos(0)).length()-pa.radius(0); + openvdb::Index32 k =0; + for (int i = 1, s = int(pa.size()); i < s; ++i) { + double d = (xyz-pa.pos(i)).length()-pa.radius(i); + if (dtree().getValue(ijk); + openvdb::Index32 m = id->tree().getValue(ijk); + if (dist >= outside) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(outside, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + //CPPUNIT_ASSERT_EQUAL(openvdb::util::INVALID_IDX, m); + CPPUNIT_ASSERT(id->tree().isValueOff(ijk)); + } else if( dist <= inside ) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(inside, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + //CPPUNIT_ASSERT_EQUAL(openvdb::util::INVALID_IDX, m); + CPPUNIT_ASSERT(id->tree().isValueOff(ijk)); + } else { + CPPUNIT_ASSERT_DOUBLES_EQUAL( dist, val, 0.0001); + CPPUNIT_ASSERT(ls->tree().isValueOn(ijk)); + CPPUNIT_ASSERT_EQUAL(k, m); + CPPUNIT_ASSERT(id->tree().isValueOn(ijk)); + ++count; + } + } + } + } + //std::cerr << "\nExpected active voxel count = " << count + // << ", actual active voxle count = " + // << ls->activeVoxelCount() << std::endl; + CPPUNIT_ASSERT_EQUAL(count, ls->activeVoxelCount()); + } +} + + +/// This is not really a conventional unit-test since the result of +/// the tests are written to a file and need to be visually verified! +void +TestParticlesToLevelSet::testRasterizeTrails() +{ + const float voxelSize = 1.0f, halfWidth = 2.0f; + openvdb::FloatGrid::Ptr ls = openvdb::createLevelSet(voxelSize, halfWidth); + + MyParticleList pa(1,5); + + // This particle radius = 1 < 1.5 i.e. it's below the Nyquist frequency and hence ignored + pa.add(openvdb::Vec3R( 0, 0, 0), 1, openvdb::Vec3R( 0, 1, 0)); + pa.add(openvdb::Vec3R(-10,-10,-10), 2, openvdb::Vec3R( 2, 0, 0)); + pa.add(openvdb::Vec3R( 10, 10, 10), 3, openvdb::Vec3R( 0, 1, 0)); + pa.add(openvdb::Vec3R( 0, 0, 0), 6, openvdb::Vec3R( 0, 0,-5)); + pa.add(openvdb::Vec3R( 20, 0, 0), 2, openvdb::Vec3R( 0, 0, 0)); + + openvdb::tools::ParticlesToLevelSet raster(*ls); + raster.rasterizeTrails(pa, 0.75);//scale offset between two instances + + //ls->tree().print(std::cout, 4); + //this->writeGrid(ls, "testRasterizeTrails"); +} + + +void +TestParticlesToLevelSet::testRasterizeTrailsAndId() +{ + MyParticleList pa(1,5); + + // This particle radius = 1 < 1.5 i.e. it's below the Nyquist frequency and hence ignored + pa.add(openvdb::Vec3R( 0, 0, 0), 1, openvdb::Vec3R( 0, 1, 0)); + pa.add(openvdb::Vec3R(-10,-10,-10), 2, openvdb::Vec3R( 2, 0, 0)); + pa.add(openvdb::Vec3R( 10, 10, 10), 3, openvdb::Vec3R( 0, 1, 0)); + pa.add(openvdb::Vec3R( 0, 0, 0), 6, openvdb::Vec3R( 0, 0,-5)); + + typedef openvdb::tools::ParticlesToLevelSet RasterT; + const float voxelSize = 1.0f, halfWidth = 2.0f; + openvdb::FloatGrid::Ptr ls = openvdb::createLevelSet(voxelSize, halfWidth); + RasterT raster(*ls); + raster.rasterizeTrails(pa, 0.75);//scale offset between two instances + raster.finalize(); + const RasterT::AttGridType::Ptr id = raster.attributeGrid(); + CPPUNIT_ASSERT(!ls->empty()); + CPPUNIT_ASSERT(!id->empty()); + CPPUNIT_ASSERT_EQUAL(ls->activeVoxelCount(),id->activeVoxelCount()); + + int min = std::numeric_limits::max(), max = -min; + for (RasterT::AttGridType::ValueOnCIter i=id->cbeginValueOn(); i; ++i) { + min = openvdb::math::Min(min, int(*i)); + max = openvdb::math::Max(max, int(*i)); + } + CPPUNIT_ASSERT_EQUAL(1, min);//first particle is ignored because of its small rdadius! + CPPUNIT_ASSERT_EQUAL(3, max); + + //ls->tree().print(std::cout, 4); + //this->writeGrid(ls, "testRasterizeTrails"); +} + + +void +TestParticlesToLevelSet::testMaskOutput() +{ + using namespace openvdb; + + using SdfGridType = FloatGrid; + using MaskGridType = MaskGrid; + + MyParticleList pa; + const Vec3R vel(10, 5, 1); + pa.add(Vec3R(84.7252, 85.7946, 84.4266), 11.8569, vel); + pa.add(Vec3R(47.9977, 81.2169, 47.7665), 5.45313, vel); + pa.add(Vec3R(87.0087, 14.0351, 95.7155), 7.36483, vel); + pa.add(Vec3R(75.8616, 53.7373, 58.202), 14.4127, vel); + pa.add(Vec3R(14.9675, 32.4141, 13.5218), 4.33101, vel); + pa.add(Vec3R(96.9809, 9.92804, 90.2349), 12.2613, vel); + pa.add(Vec3R(63.4274, 3.84254, 32.5047), 12.1566, vel); + pa.add(Vec3R(62.351, 47.4698, 41.4369), 11.637, vel); + pa.add(Vec3R(62.2846, 1.35716, 66.2527), 18.9914, vel); + pa.add(Vec3R(44.1711, 1.99877, 45.1159), 1.11429, vel); + + { + // Test variable-radius particles. + + // Rasterize into an SDF. + auto sdf = createLevelSet(); + tools::particlesToSdf(pa, *sdf); + + // Rasterize into a boolean mask. + auto mask = MaskGridType::create(); + tools::particlesToMask(pa, *mask); + + // Verify that the rasterized mask matches the interior of the SDF. + mask->tree().voxelizeActiveTiles(); + auto interior = tools::sdfInteriorMask(*sdf); + CPPUNIT_ASSERT(interior); + interior->tree().voxelizeActiveTiles(); + CPPUNIT_ASSERT_EQUAL(interior->activeVoxelCount(), mask->activeVoxelCount()); + interior->topologyDifference(*mask); + CPPUNIT_ASSERT_EQUAL(0, int(interior->activeVoxelCount())); + } + { + // Test fixed-radius particles. + + auto sdf = createLevelSet(); + tools::particlesToSdf(pa, *sdf, /*radius=*/10.0); + + auto mask = MaskGridType::create(); + tools::particlesToMask(pa, *mask, /*radius=*/10.0); + + mask->tree().voxelizeActiveTiles(); + auto interior = tools::sdfInteriorMask(*sdf); + CPPUNIT_ASSERT(interior); + interior->tree().voxelizeActiveTiles(); + CPPUNIT_ASSERT_EQUAL(interior->activeVoxelCount(), mask->activeVoxelCount()); + interior->topologyDifference(*mask); + CPPUNIT_ASSERT_EQUAL(0, int(interior->activeVoxelCount())); + } + { + // Test particle trails. + + auto sdf = createLevelSet(); + tools::particleTrailsToSdf(pa, *sdf); + + auto mask = MaskGridType::create(); + tools::particleTrailsToMask(pa, *mask); + + mask->tree().voxelizeActiveTiles(); + auto interior = tools::sdfInteriorMask(*sdf); + CPPUNIT_ASSERT(interior); + interior->tree().voxelizeActiveTiles(); + CPPUNIT_ASSERT_EQUAL(interior->activeVoxelCount(), mask->activeVoxelCount()); + interior->topologyDifference(*mask); + CPPUNIT_ASSERT_EQUAL(0, int(interior->activeVoxelCount())); + } + { + // Test attribute transfer. + + auto sdf = createLevelSet(); + tools::ParticlesToLevelSet p2sdf(*sdf); + p2sdf.rasterizeSpheres(pa); + p2sdf.finalize(/*prune=*/true); + const auto sdfAttr = p2sdf.attributeGrid(); + CPPUNIT_ASSERT(sdfAttr); + + auto mask = MaskGridType::create(); + tools::ParticlesToLevelSet p2mask(*mask); + p2mask.rasterizeSpheres(pa); + p2mask.finalize(/*prune=*/true); + const auto maskAttr = p2mask.attributeGrid(); + CPPUNIT_ASSERT(maskAttr); + + mask->tree().voxelizeActiveTiles(); + auto interior = tools::sdfInteriorMask(*sdf); + CPPUNIT_ASSERT(interior); + interior->tree().voxelizeActiveTiles(); + CPPUNIT_ASSERT_EQUAL(interior->activeVoxelCount(), mask->activeVoxelCount()); + interior->topologyDifference(*mask); + CPPUNIT_ASSERT_EQUAL(0, int(interior->activeVoxelCount())); + + // Verify that the mask- and SDF-generated attribute grids match. + auto sdfAcc = sdfAttr->getConstAccessor(); + auto maskAcc = maskAttr->getConstAccessor(); + for (auto it = interior->cbeginValueOn(); it; ++it) { + const auto& c = it.getCoord(); + CPPUNIT_ASSERT_EQUAL(sdfAcc.getValue(c), maskAcc.getValue(c)); + } + } +} diff --git a/openvdb/unittest/TestPointAdvect.cc b/openvdb/unittest/TestPointAdvect.cc new file mode 100644 index 00000000..e4742748 --- /dev/null +++ b/openvdb/unittest/TestPointAdvect.cc @@ -0,0 +1,462 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include "util.h" +#include +#include +#include +#include +#include +#include +#include // csgDifference +#include // createLevelSetBox +#include +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointAdvect: public CppUnit::TestCase +{ +public: + + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointAdvect); + CPPUNIT_TEST(testAdvect); + CPPUNIT_TEST(testZalesaksDisk); + CPPUNIT_TEST_SUITE_END(); + + void testAdvect(); + void testZalesaksDisk(); +}; // class TestPointAdvect + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointAdvect); + + +//////////////////////////////////////// + + +void +TestPointAdvect::testAdvect() +{ + // generate four points + + const float voxelSize = 1.0f; + std::vector positions = { + {5, 2, 3}, + {2, 4, 1}, + {50, 5, 1}, + {3, 20, 1}, + }; + + const PointAttributeVector pointList(positions); + + math::Transform::Ptr pointTransform(math::Transform::createLinearTransform(voxelSize)); + + auto pointIndexGrid = tools::createPointIndexGrid( + pointList, *pointTransform); + + auto points = createPointDataGrid( + *pointIndexGrid, pointList, *pointTransform); + + std::vector id; + id.push_back(0); + id.push_back(1); + id.push_back(2); + id.push_back(3); + + auto idAttributeType = TypedAttributeArray::attributeType(); + appendAttribute(points->tree(), "id", idAttributeType); + + // create a wrapper around the id vector + PointAttributeVector idWrapper(id); + + populateAttribute>( + points->tree(), pointIndexGrid->tree(), "id", idWrapper); + + // create "test" group which only contains third point + + appendGroup(points->tree(), "test"); + std::vector groups(positions.size(), 0); + groups[2] = 1; + setGroup(points->tree(), pointIndexGrid->tree(), groups, "test"); + + // create "test2" group which contains second and third point + + appendGroup(points->tree(), "test2"); + groups[1] = 1; + setGroup(points->tree(), pointIndexGrid->tree(), groups, "test2"); + + const Vec3s tolerance(1e-3f); + + // advect by velocity using all integration orders + + for (Index integrationOrder = 0; integrationOrder < 5; integrationOrder++) { + Vec3s velocityBackground(1.0, 2.0, 3.0); + double timeStep = 1.0; + int steps = 1; + auto velocity = Vec3SGrid::create(velocityBackground); // grid with background value only + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps); + + for (auto leaf = pointsToAdvect->tree().beginLeaf(); leaf; ++leaf) { + AttributeHandle positionHandle(leaf->constAttributeArray("P")); + AttributeHandle idHandle(leaf->constAttributeArray("id")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + if (integrationOrder > 0) expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + } + + // invalid advection scheme + + auto zeroVelocityGrid = Vec3SGrid::create(Vec3s(0)); + CPPUNIT_ASSERT_THROW(advectPoints(*points, *zeroVelocityGrid, 5, 1.0, 1), ValueError); + + { // advect varying dt and steps + Vec3s velocityBackground(1.0, 2.0, 3.0); + Index integrationOrder = 4; + double timeStep = 0.1; + int steps = 100; + auto velocity = Vec3SGrid::create(velocityBackground); // grid with background value only + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps); + + for (auto leaf = pointsToAdvect->tree().beginLeaf(); leaf; ++leaf) { + AttributeHandle positionHandle(leaf->constAttributeArray("P")); + AttributeHandle idHandle(leaf->constAttributeArray("id")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId] + velocityBackground * 10.0f); + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + } + + { // perform filtered advection + Vec3s velocityBackground(1.0, 2.0, 3.0); + Index integrationOrder = 4; + double timeStep = 1.0; + int steps = 1; + auto velocity = Vec3SGrid::create(velocityBackground); // grid with background value only + + std::vector advectIncludeGroups; + std::vector advectExcludeGroups; + std::vector includeGroups; + std::vector excludeGroups; + + { // only advect points in "test" group + advectIncludeGroups.push_back("test"); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter( + advectIncludeGroups, advectExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps, + advectFilter, filter); + + CPPUNIT_ASSERT_EQUAL(Index64(4), pointCount(pointsToAdvect->tree())); + + for (auto leafIter = pointsToAdvect->tree().beginLeaf(); leafIter; ++leafIter) { + AttributeHandle positionHandle(leafIter->constAttributeArray("P")); + AttributeHandle idHandle(leafIter->constAttributeArray("id")); + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + if (theId == 2) expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + + advectIncludeGroups.clear(); + } + + { // only keep points in "test" group + includeGroups.push_back("test"); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter( + advectIncludeGroups, advectExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps, + advectFilter, filter); + + CPPUNIT_ASSERT_EQUAL(Index64(1), pointCount(pointsToAdvect->tree())); + + for (auto leafIter = pointsToAdvect->tree().beginLeaf(); leafIter; ++leafIter) { + AttributeHandle positionHandle(leafIter->constAttributeArray("P")); + AttributeHandle idHandle(leafIter->constAttributeArray("id")); + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + + includeGroups.clear(); + } + + { // only advect points in "test2" group, delete points in "test" group + advectIncludeGroups.push_back("test2"); + excludeGroups.push_back("test"); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter( + advectIncludeGroups, advectExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps, + advectFilter, filter); + + CPPUNIT_ASSERT_EQUAL(Index64(3), pointCount(pointsToAdvect->tree())); + + for (auto leafIter = pointsToAdvect->tree().beginLeaf(); leafIter; ++leafIter) { + AttributeHandle positionHandle(leafIter->constAttributeArray("P")); + AttributeHandle idHandle(leafIter->constAttributeArray("id")); + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + if (theId == 1) expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + + advectIncludeGroups.clear(); + excludeGroups.clear(); + } + + { // advect all points, caching disabled + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter( + advectIncludeGroups, advectExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps, + advectFilter, filter, false); + + CPPUNIT_ASSERT_EQUAL(Index64(4), pointCount(pointsToAdvect->tree())); + + for (auto leafIter = pointsToAdvect->tree().beginLeaf(); leafIter; ++leafIter) { + AttributeHandle positionHandle(leafIter->constAttributeArray("P")); + AttributeHandle idHandle(leafIter->constAttributeArray("id")); + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + } + + { // only advect points in "test2" group, delete points in "test" group, caching disabled + advectIncludeGroups.push_back("test2"); + excludeGroups.push_back("test"); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter( + advectIncludeGroups, advectExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + + auto pointsToAdvect = points->deepCopy(); + const auto& transform = pointsToAdvect->transform(); + + advectPoints(*pointsToAdvect, *velocity, integrationOrder, timeStep, steps, + advectFilter, filter, false); + + CPPUNIT_ASSERT_EQUAL(Index64(3), pointCount(pointsToAdvect->tree())); + + for (auto leafIter = pointsToAdvect->tree().beginLeaf(); leafIter; ++leafIter) { + AttributeHandle positionHandle(leafIter->constAttributeArray("P")); + AttributeHandle idHandle(leafIter->constAttributeArray("id")); + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + int theId = idHandle.get(*iter); + Vec3s position = transform.indexToWorld( + positionHandle.get(*iter) + iter.getCoord().asVec3d()); + Vec3s expectedPosition(positions[theId]); + if (theId == 1) expectedPosition += velocityBackground; + CPPUNIT_ASSERT(math::isApproxEqual(position, expectedPosition, tolerance)); + } + } + + advectIncludeGroups.clear(); + excludeGroups.clear(); + } + } +} + + +void +TestPointAdvect::testZalesaksDisk() +{ + // advect a notched sphere known as Zalesak's disk in a rotational velocity field + + // build the level set sphere + + Vec3s center(0, 0, 0); + float radius = 10; + float voxelSize = 0.2f; + + auto zalesak = tools::createLevelSetSphere(radius, center, voxelSize); + + // create box for notch using width and depth relative to radius + + const math::Transform::Ptr xform = math::Transform::createLinearTransform(voxelSize); + + Vec3f min(center); + Vec3f max(center); + float notchWidth = 0.5f; + float notchDepth = 1.5f; + + min.x() -= (radius * notchWidth) / 2; + min.y() -= (radius * (notchDepth - 1)); + min.z() -= radius * 1.1f; + + max.x() += (radius * notchWidth) / 2; + max.y() += radius * 1.1f; + max.z() += radius * 1.1f; + + math::BBox bbox(min, max); + + auto notch = tools::createLevelSetBox(bbox, *xform); + + // subtract notch from the sphere + + tools::csgDifference(*zalesak, *notch); + + // scatter points inside the sphere + + auto points = points::denseUniformPointScatter(*zalesak, /*pointsPerVoxel=*/8); + + // append an integer "id" attribute + + auto idAttributeType = TypedAttributeArray::attributeType(); + appendAttribute(points->tree(), "id", idAttributeType); + + // populate it in serial based on iteration order + + int id = 0; + for (auto leaf = points->tree().beginLeaf(); leaf; ++leaf) { + AttributeWriteHandle handle(leaf->attributeArray("id")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + handle.set(*iter, id++); + } + } + + // copy grid into new grid for advecting + + auto pointsToAdvect = points->deepCopy(); + + // populate a velocity grid that rotates in X + + auto velocity = Vec3SGrid::create(Vec3s(0)); + velocity->setTransform(xform); + + CoordBBox activeBbox(zalesak->evalActiveVoxelBoundingBox()); + activeBbox.expand(5); + + velocity->denseFill(activeBbox, Vec3s(0)); + + for (auto leaf = velocity->tree().beginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->beginValueOn(); iter; ++iter) { + Vec3s position = xform->indexToWorld(iter.getCoord().asVec3d()); + Vec3s vel = (position.cross(Vec3s(0, 0, 1)) * 2.0f * M_PI) / 10.0f; + iter.setValue(vel); + } + } + + // extract original positions + + const Index count = Index(pointCount(points->constTree())); + + std::vector preAdvectPositions(count, Vec3f(0)); + + for (auto leaf = points->constTree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle idHandle(leaf->constAttributeArray("id")); + AttributeHandle posHandle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + Vec3f position = posHandle.get(*iter) + iter.getCoord().asVec3d(); + preAdvectPositions[idHandle.get(*iter)] = Vec3f(xform->indexToWorld(position)); + } + } + + // advect points a half revolution + + points::advectPoints(*pointsToAdvect, *velocity, Index(4), 1.0, 5); + + // extract new positions + + std::vector postAdvectPositions(count, Vec3f(0)); + + for (auto leaf = pointsToAdvect->constTree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle idHandle(leaf->constAttributeArray("id")); + AttributeHandle posHandle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + Vec3f position = posHandle.get(*iter) + iter.getCoord().asVec3d(); + postAdvectPositions[idHandle.get(*iter)] = Vec3f(xform->indexToWorld(position)); + } + } + + for (Index i = 0; i < count; i++) { + CPPUNIT_ASSERT(!math::isApproxEqual( + preAdvectPositions[i], postAdvectPositions[i], Vec3f(0.1))); + } + + // advect points another half revolution + + points::advectPoints(*pointsToAdvect, *velocity, Index(4), 1.0, 5); + + for (auto leaf = pointsToAdvect->constTree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle idHandle(leaf->constAttributeArray("id")); + AttributeHandle posHandle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + Vec3f position = posHandle.get(*iter) + iter.getCoord().asVec3d(); + postAdvectPositions[idHandle.get(*iter)] = Vec3f(xform->indexToWorld(position)); + } + } + + for (Index i = 0; i < count; i++) { + CPPUNIT_ASSERT(math::isApproxEqual( + preAdvectPositions[i], postAdvectPositions[i], Vec3f(0.1))); + } +} diff --git a/openvdb/unittest/TestPointAttribute.cc b/openvdb/unittest/TestPointAttribute.cc new file mode 100644 index 00000000..b7801973 --- /dev/null +++ b/openvdb/unittest/TestPointAttribute.cc @@ -0,0 +1,433 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointAttribute: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointAttribute); + CPPUNIT_TEST(testAppendDrop); + CPPUNIT_TEST(testRename); + CPPUNIT_TEST(testBloscCompress); + + CPPUNIT_TEST_SUITE_END(); + + void testAppendDrop(); + void testRename(); + void testBloscCompress(); +}; // class TestPointAttribute + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointAttribute); + +//////////////////////////////////////// + + +void +TestPointAttribute::testAppendDrop() +{ + using AttributeI = TypedAttributeArray; + + std::vector positions{{1, 1, 1}, {1, 10, 1}, {10, 1, 1}, {10, 10, 1}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check one leaf per point + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(4)); + + // retrieve first and last leaf attribute sets + + auto leafIter = tree.cbeginLeaf(); + const AttributeSet& attributeSet = leafIter->attributeSet(); + + ++leafIter; + ++leafIter; + ++leafIter; + + const AttributeSet& attributeSet4 = leafIter->attributeSet(); + + // check just one attribute exists (position) + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(1)); + + { // append an attribute, different initial values and collapse + appendAttribute(tree, "id"); + + CPPUNIT_ASSERT(tree.beginLeaf()->hasAttribute("id")); + + AttributeArray& array = tree.beginLeaf()->attributeArray("id"); + CPPUNIT_ASSERT(array.isUniform()); + CPPUNIT_ASSERT_EQUAL(AttributeI::cast(array).get(0), zeroVal()); + + dropAttribute(tree, "id"); + + appendAttribute(tree, "id", 10, /*stride*/1); + + CPPUNIT_ASSERT(tree.beginLeaf()->hasAttribute("id")); + + AttributeArray& array2 = tree.beginLeaf()->attributeArray("id"); + CPPUNIT_ASSERT(array2.isUniform()); + CPPUNIT_ASSERT_EQUAL(AttributeI::cast(array2).get(0), AttributeI::ValueType(10)); + + array2.expand(); + CPPUNIT_ASSERT(!array2.isUniform()); + + collapseAttribute(tree, "id", 50); + + AttributeArray& array3 = tree.beginLeaf()->attributeArray("id"); + CPPUNIT_ASSERT(array3.isUniform()); + CPPUNIT_ASSERT_EQUAL(AttributeI::cast(array3).get(0), AttributeI::ValueType(50)); + + dropAttribute(tree, "id"); + + appendAttribute(tree, "name", "test"); + + AttributeArray& array4 = tree.beginLeaf()->attributeArray("name"); + CPPUNIT_ASSERT(array4.isUniform()); + StringAttributeHandle handle(array4, attributeSet.descriptor().getMetadata()); + CPPUNIT_ASSERT_EQUAL(handle.get(0), Name("test")); + + dropAttribute(tree, "name"); + } + + { // append a strided attribute + appendAttribute(tree, "id", 0, /*stride=*/1); + + AttributeArray& array = tree.beginLeaf()->attributeArray("id"); + CPPUNIT_ASSERT_EQUAL(array.stride(), Index(1)); + + dropAttribute(tree, "id"); + + appendAttribute(tree, "id", 0, /*stride=*/10); + + CPPUNIT_ASSERT(tree.beginLeaf()->hasAttribute("id")); + + AttributeArray& array2 = tree.beginLeaf()->attributeArray("id"); + CPPUNIT_ASSERT_EQUAL(array2.stride(), Index(10)); + + dropAttribute(tree, "id"); + } + + { // append an attribute, check descriptors are as expected, default value test + appendAttribute(tree, "id", + /*uniformValue*/0, + /*stride=*/1, + /*constantStride=*/true, + /*defaultValue*/TypedMetadata(10).copy(), + /*hidden=*/false, /*transient=*/false); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(2)); + CPPUNIT_ASSERT(attributeSet.descriptor() == attributeSet4.descriptor()); + CPPUNIT_ASSERT(&attributeSet.descriptor() == &attributeSet4.descriptor()); + + CPPUNIT_ASSERT(attributeSet.descriptor().getMetadata()["default:id"]); + } + + { // append three attributes, check ordering is consistent with insertion + appendAttribute(tree, "test3"); + appendAttribute(tree, "test1"); + appendAttribute(tree, "test2"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(5)); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("id"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test3"), size_t(2)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test1"), size_t(3)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test2"), size_t(4)); + } + + { // drop an attribute by index, check ordering remains consistent + std::vector indices{2}; + + dropAttributes(tree, indices); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(4)); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("id"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test1"), size_t(2)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test2"), size_t(3)); + } + + { // drop attributes by index, check ordering remains consistent + std::vector indices{1, 3}; + + dropAttributes(tree, indices); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(2)); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test1"), size_t(1)); + } + + { // drop last non-position attribute + std::vector indices{1}; + + dropAttributes(tree, indices); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(1)); + } + + { // attempt (and fail) to drop position + std::vector indices{0}; + + CPPUNIT_ASSERT_THROW(dropAttributes(tree, indices), openvdb::KeyError); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(1)); + CPPUNIT_ASSERT(attributeSet.descriptor().find("P") != AttributeSet::INVALID_POS); + } + + { // add back previous attributes + appendAttribute(tree, "id"); + appendAttribute(tree, "test3"); + appendAttribute(tree, "test1"); + appendAttribute(tree, "test2"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(5)); + } + + { // attempt (and fail) to drop non-existing attribute + std::vector names{"test1000"}; + + CPPUNIT_ASSERT_THROW(dropAttributes(tree, names), openvdb::KeyError); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(5)); + } + + { // drop by name + std::vector names{"test1", "test2"}; + + dropAttributes(tree, names); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(3)); + CPPUNIT_ASSERT(attributeSet.descriptor() == attributeSet4.descriptor()); + CPPUNIT_ASSERT(&attributeSet.descriptor() == &attributeSet4.descriptor()); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("id"), size_t(1)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("test3"), size_t(2)); + } + + { // attempt (and fail) to drop position + std::vector names{"P"}; + + CPPUNIT_ASSERT_THROW(dropAttributes(tree, names), openvdb::KeyError); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(3)); + CPPUNIT_ASSERT(attributeSet.descriptor().find("P") != AttributeSet::INVALID_POS); + } + + { // drop one attribute by name + dropAttribute(tree, "test3"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(2)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("id"), size_t(1)); + } + + { // drop one attribute by id + dropAttribute(tree, 1); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(1)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().find("P"), size_t(0)); + } + + { // attempt to add an attribute with a name that already exists + appendAttribute(tree, "test3"); + CPPUNIT_ASSERT_THROW(appendAttribute(tree, "test3"), openvdb::KeyError); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(2)); + } + + { // attempt to add an attribute with an unregistered type (Vec2R) + CPPUNIT_ASSERT_THROW(appendAttribute(tree, "unregistered"), openvdb::KeyError); + } + + { // append attributes marked as hidden, transient, group and string + appendAttribute(tree, "testHidden", 0, + /*stride=*/1, /*constantStride=*/true, Metadata::Ptr(), true, false); + appendAttribute(tree, "testTransient", 0, + /*stride=*/1, /*constantStride=*/true, Metadata::Ptr(), false, true); + appendAttribute(tree, "testString", "", + /*stride=*/1, /*constantStride=*/true, Metadata::Ptr(), false, false); + + const AttributeArray& arrayHidden = leafIter->attributeArray("testHidden"); + const AttributeArray& arrayTransient = leafIter->attributeArray("testTransient"); + const AttributeArray& arrayString = leafIter->attributeArray("testString"); + + CPPUNIT_ASSERT(arrayHidden.isHidden()); + CPPUNIT_ASSERT(!arrayTransient.isHidden()); + + CPPUNIT_ASSERT(!arrayHidden.isTransient()); + CPPUNIT_ASSERT(arrayTransient.isTransient()); + CPPUNIT_ASSERT(!arrayString.isTransient()); + + CPPUNIT_ASSERT(!isGroup(arrayHidden)); + CPPUNIT_ASSERT(!isGroup(arrayTransient)); + CPPUNIT_ASSERT(!isGroup(arrayString)); + + CPPUNIT_ASSERT(!isString(arrayHidden)); + CPPUNIT_ASSERT(!isString(arrayTransient)); + CPPUNIT_ASSERT(isString(arrayString)); + } + + { // collapsing non-existing attribute throws exception + CPPUNIT_ASSERT_THROW(collapseAttribute(tree, "unknown", 0), openvdb::KeyError); + CPPUNIT_ASSERT_THROW(collapseAttribute(tree, "unknown", "unknown"), openvdb::KeyError); + } +} + +void +TestPointAttribute::testRename() +{ + std::vector positions{{1, 1, 1}, {1, 10, 1}, {10, 1, 1}, {10, 10, 1}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check one leaf per point + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(4)); + + const openvdb::TypedMetadata defaultValue(5.0f); + + appendAttribute(tree, "test1", 0, + /*stride=*/1, /*constantStride=*/true, defaultValue.copy()); + appendAttribute(tree, "id"); + appendAttribute(tree, "test2"); + + // retrieve first and last leaf attribute sets + + auto leafIter = tree.cbeginLeaf(); + const AttributeSet& attributeSet = leafIter->attributeSet(); + ++leafIter; + const AttributeSet& attributeSet4 = leafIter->attributeSet(); + + { // rename one attribute + renameAttribute(tree, "test1", "test1renamed"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().size(), size_t(4)); + CPPUNIT_ASSERT(attributeSet.descriptor().find("test1") == AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(attributeSet.descriptor().find("test1renamed") != AttributeSet::INVALID_POS); + + CPPUNIT_ASSERT_EQUAL(attributeSet4.descriptor().size(), size_t(4)); + CPPUNIT_ASSERT(attributeSet4.descriptor().find("test1") == AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(attributeSet4.descriptor().find("test1renamed") != AttributeSet::INVALID_POS); + + renameAttribute(tree, "test1renamed", "test1"); + } + + { // rename non-existing, matching and existing attributes + CPPUNIT_ASSERT_THROW(renameAttribute(tree, "nonexist", "newname"), openvdb::KeyError); + CPPUNIT_ASSERT_THROW(renameAttribute(tree, "test1", "test1"), openvdb::KeyError); + CPPUNIT_ASSERT_THROW(renameAttribute(tree, "test2", "test1"), openvdb::KeyError); + } + + { // rename multiple attributes + std::vector oldNames{"test1", "test2"}; + std::vector newNames{"test1renamed"}; + + CPPUNIT_ASSERT_THROW(renameAttributes(tree, oldNames, newNames), openvdb::ValueError); + + newNames.push_back("test2renamed"); + renameAttributes(tree, oldNames, newNames); + + renameAttribute(tree, "test1renamed", "test1"); + renameAttribute(tree, "test2renamed", "test2"); + } + + { // rename an attribute with a default value + CPPUNIT_ASSERT(attributeSet.descriptor().hasDefaultValue("test1")); + + renameAttribute(tree, "test1", "test1renamed"); + + CPPUNIT_ASSERT(attributeSet.descriptor().hasDefaultValue("test1renamed")); + } +} + +void +TestPointAttribute::testBloscCompress() +{ + std::vector positions; + for (float i = 1.f; i < 6.f; i += 0.1f) { + positions.emplace_back(1, i, 1); + positions.emplace_back(1, 1, i); + positions.emplace_back(10, i, 1); + positions.emplace_back(10, 1, i); + } + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check two leaves + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(2)); + + // retrieve first and last leaf attribute sets + + auto leafIter = tree.beginLeaf(); + auto leafIter2 = ++tree.beginLeaf(); + + { // append an attribute, check descriptors are as expected + appendAttribute(tree, "compact"); + appendAttribute(tree, "id"); + appendAttribute(tree, "id2"); + } + + using AttributeHandleRWI = AttributeWriteHandle; + + { // set some id values (leaf 1) + AttributeHandleRWI handleCompact(leafIter->attributeArray("compact")); + AttributeHandleRWI handleId(leafIter->attributeArray("id")); + AttributeHandleRWI handleId2(leafIter->attributeArray("id2")); + + const int size = leafIter->attributeArray("id").size(); + + CPPUNIT_ASSERT_EQUAL(size, 102); + + for (int i = 0; i < size; i++) { + handleCompact.set(i, 5); + handleId.set(i, i); + handleId2.set(i, i); + } + } + + { // set some id values (leaf 2) + AttributeHandleRWI handleCompact(leafIter2->attributeArray("compact")); + AttributeHandleRWI handleId(leafIter2->attributeArray("id")); + AttributeHandleRWI handleId2(leafIter2->attributeArray("id2")); + + const int size = leafIter2->attributeArray("id").size(); + + CPPUNIT_ASSERT_EQUAL(size, 102); + + for (int i = 0; i < size; i++) { + handleCompact.set(i, 10); + handleId.set(i, i); + handleId2.set(i, i); + } + } + + compactAttributes(tree); + + CPPUNIT_ASSERT(leafIter->attributeArray("compact").isUniform()); + CPPUNIT_ASSERT(leafIter2->attributeArray("compact").isUniform()); +} diff --git a/openvdb/unittest/TestPointConversion.cc b/openvdb/unittest/TestPointConversion.cc new file mode 100644 index 00000000..ef359ee2 --- /dev/null +++ b/openvdb/unittest/TestPointConversion.cc @@ -0,0 +1,1280 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include +#include +#include +#include + +#ifdef _MSC_VER +#include +#endif + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointConversion: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointConversion); + CPPUNIT_TEST(testPointConversion); + CPPUNIT_TEST(testPointConversionNans); + CPPUNIT_TEST(testStride); + CPPUNIT_TEST(testComputeVoxelSize); + CPPUNIT_TEST(testPrecision); + + CPPUNIT_TEST_SUITE_END(); + + void testPointConversion(); + void testPointConversionNans(); + void testStride(); + void testComputeVoxelSize(); + void testPrecision(); + +}; // class TestPointConversion + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointConversion); + + +// Simple Attribute Wrapper +template +struct AttributeWrapper +{ + using ValueType = T; + using PosType = T; + using value_type = T; + + struct Handle + { + Handle(AttributeWrapper& attribute) + : mBuffer(attribute.mAttribute) + , mStride(attribute.mStride) { } + + template + void set(size_t n, openvdb::Index m, const ValueType& value) { + mBuffer[n * mStride + m] = static_cast(value); + } + + template + void set(size_t n, openvdb::Index m, const openvdb::math::Vec3& value) { + mBuffer[n * mStride + m] = static_cast(value); + } + + private: + std::vector& mBuffer; + Index mStride; + }; // struct Handle + + explicit AttributeWrapper(const Index stride) : mStride(stride) { } + + void expand() { } + void compact() { } + + void resize(const size_t n) { mAttribute.resize(n); } + size_t size() const { return mAttribute.size(); } + + std::vector& buffer() { return mAttribute; } + + template + void get(ValueT& value, size_t n, openvdb::Index m = 0) const { value = mAttribute[n * mStride + m]; } + template + void getPos(size_t n, ValueT& value) const { this->get(value, n); } + +private: + std::vector mAttribute; + Index mStride; +}; // struct AttributeWrapper + + +struct GroupWrapper +{ + GroupWrapper() = default; + + void setOffsetOn(openvdb::Index index) { + mGroup[index] = short(1); + } + + void finalize() { } + + void resize(const size_t n) { mGroup.resize(n, short(0)); } + size_t size() const { return mGroup.size(); } + + std::vector& buffer() { return mGroup; } + +private: + std::vector mGroup; +}; // struct GroupWrapper + + +struct PointData +{ + int id; + Vec3f position; + Vec3i xyz; + float uniform; + openvdb::Name string; + short group; + + bool operator<(const PointData& other) const { return id < other.id; } +}; // PointData + + +// Generate random points by uniformly distributing points +// on a unit-sphere. +inline void +genPoints(const int numPoints, const double scale, const bool stride, + AttributeWrapper& position, + AttributeWrapper& xyz, + AttributeWrapper& id, + AttributeWrapper& uniform, + AttributeWrapper& string, + GroupWrapper& group) +{ + // init + openvdb::math::Random01 randNumber(0); + const int n = int(std::sqrt(double(numPoints))); + const double xScale = (2.0 * M_PI) / double(n); + const double yScale = M_PI / double(n); + + double x, y, theta, phi; + openvdb::Vec3f pos; + + position.resize(n*n); + xyz.resize(stride ? n*n*3 : 1); + id.resize(n*n); + uniform.resize(n*n); + string.resize(n*n); + group.resize(n*n); + + AttributeWrapper::Handle positionHandle(position); + AttributeWrapper::Handle xyzHandle(xyz); + AttributeWrapper::Handle idHandle(id); + AttributeWrapper::Handle uniformHandle(uniform); + AttributeWrapper::Handle stringHandle(string); + + int i = 0; + + // loop over a [0 to n) x [0 to n) grid. + for (int a = 0; a < n; ++a) { + for (int b = 0; b < n; ++b) { + + // jitter, move to random pos. inside the current cell + x = double(a) + randNumber(); + y = double(b) + randNumber(); + + // remap to a lat/long map + theta = y * yScale; // [0 to PI] + phi = x * xScale; // [0 to 2PI] + + // convert to cartesian coordinates on a unit sphere. + // spherical coordinate triplet (r=1, theta, phi) + pos[0] = static_cast(std::sin(theta)*std::cos(phi)*scale); + pos[1] = static_cast(std::sin(theta)*std::sin(phi)*scale); + pos[2] = static_cast(std::cos(theta)*scale); + + positionHandle.set(i, /*stride*/0, pos); + idHandle.set(i, /*stride*/0, i); + uniformHandle.set(i, /*stride*/0, 100.0f); + + if (stride) + { + xyzHandle.set(i, 0, i); + xyzHandle.set(i, 1, i*i); + xyzHandle.set(i, 2, i*i*i); + } + + // add points with even id to the group + if ((i % 2) == 0) { + group.setOffsetOn(i); + stringHandle.set(i, /*stride*/0, "testA"); + } + else { + stringHandle.set(i, /*stride*/0, "testB"); + } + + i++; + } + } +} + + +//////////////////////////////////////// + + +void +TestPointConversion::testPointConversion() +{ + // generate points + + const size_t count(1000000); + + AttributeWrapper position(1); + AttributeWrapper xyz(1); + AttributeWrapper id(1); + AttributeWrapper uniform(1); + AttributeWrapper string(1); + GroupWrapper group; + + genPoints(count, /*scale=*/ 100.0, /*stride=*/false, + position, xyz, id, uniform, string, group); + + CPPUNIT_ASSERT_EQUAL(position.size(), count); + CPPUNIT_ASSERT_EQUAL(id.size(), count); + CPPUNIT_ASSERT_EQUAL(uniform.size(), count); + CPPUNIT_ASSERT_EQUAL(string.size(), count); + CPPUNIT_ASSERT_EQUAL(group.size(), count); + + // convert point positions into a Point Data Grid + + const float voxelSize = 1.0f; + openvdb::math::Transform::Ptr transform(openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = tools::createPointIndexGrid(position, *transform); + PointDataGrid::Ptr pointDataGrid = createPointDataGrid(*pointIndexGrid, position, *transform); + + tools::PointIndexTree& indexTree = pointIndexGrid->tree(); + PointDataTree& tree = pointDataGrid->tree(); + + // add id and populate + + appendAttribute(tree, "id"); + populateAttribute>(tree, indexTree, "id", id); + + // add uniform and populate + + appendAttribute(tree, "uniform"); + populateAttribute>(tree, indexTree, "uniform", uniform); + + // add string and populate + + appendAttribute(tree, "string"); + + // reset the descriptors + PointDataTree::LeafIter leafIter = tree.beginLeaf(); + const AttributeSet::Descriptor& descriptor = leafIter->attributeSet().descriptor(); + auto newDescriptor = std::make_shared(descriptor); + for (; leafIter; ++leafIter) { + leafIter->resetDescriptor(newDescriptor); + } + + populateAttribute>( + tree, indexTree, "string", string); + + // add group and set membership + + appendGroup(tree, "test"); + setGroup(tree, indexTree, group.buffer(), "test"); + + CPPUNIT_ASSERT_EQUAL(indexTree.leafCount(), tree.leafCount()); + + // read/write grid to a temp file + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + std::string filename = tempDir + "/openvdb_test_point_conversion"; + + io::File fileOut(filename); + + GridCPtrVec grids; + grids.push_back(pointDataGrid); + + fileOut.write(grids); + + fileOut.close(); + + io::File fileIn(filename); + fileIn.open(); + + GridPtrVecPtr readGrids = fileIn.getGrids(); + + fileIn.close(); + + CPPUNIT_ASSERT_EQUAL(readGrids->size(), size_t(1)); + + pointDataGrid = GridBase::grid((*readGrids)[0]); + PointDataTree& inputTree = pointDataGrid->tree(); + + // create accessor and iterator for Point Data Tree + + PointDataTree::LeafCIter leafCIter = inputTree.cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(5, int(leafCIter->attributeSet().size())); + + CPPUNIT_ASSERT(leafCIter->attributeSet().find("id") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("uniform") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("P") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("string") != AttributeSet::INVALID_POS); + + const auto idIndex = static_cast(leafCIter->attributeSet().find("id")); + const auto uniformIndex = static_cast(leafCIter->attributeSet().find("uniform")); + const auto stringIndex = static_cast(leafCIter->attributeSet().find("string")); + const AttributeSet::Descriptor::GroupIndex groupIndex = + leafCIter->attributeSet().groupIndex("test"); + + // convert back into linear point attribute data + + AttributeWrapper outputPosition(1); + AttributeWrapper outputId(1); + AttributeWrapper outputUniform(1); + AttributeWrapper outputString(1); + GroupWrapper outputGroup; + + // test offset the whole point block by an arbitrary amount + + Index64 startOffset = 10; + + outputPosition.resize(startOffset + position.size()); + outputId.resize(startOffset + id.size()); + outputUniform.resize(startOffset + uniform.size()); + outputString.resize(startOffset + string.size()); + outputGroup.resize(startOffset + group.size()); + + std::vector includeGroups; + std::vector excludeGroups; + + std::vector offsets; + MultiGroupFilter filter(includeGroups, excludeGroups, inputTree.cbeginLeaf()->attributeSet()); + pointOffsets(offsets, inputTree, filter); + + convertPointDataGridPosition(outputPosition, *pointDataGrid, offsets, startOffset, filter); + convertPointDataGridAttribute(outputId, inputTree, offsets, startOffset, idIndex, 1, filter); + convertPointDataGridAttribute(outputUniform, inputTree, offsets, startOffset, uniformIndex, 1, filter); + convertPointDataGridAttribute(outputString, inputTree, offsets, startOffset, stringIndex, 1, filter); + convertPointDataGridGroup(outputGroup, inputTree, offsets, startOffset, groupIndex, filter); + + // pack and sort the new buffers based on id + + std::vector pointData(count); + + for (unsigned int i = 0; i < count; i++) { + pointData[i].id = outputId.buffer()[startOffset + i]; + pointData[i].position = outputPosition.buffer()[startOffset + i]; + pointData[i].uniform = outputUniform.buffer()[startOffset + i]; + pointData[i].string = outputString.buffer()[startOffset + i]; + pointData[i].group = outputGroup.buffer()[startOffset + i]; + } + + std::sort(pointData.begin(), pointData.end()); + + // compare old and new buffers + + for (unsigned int i = 0; i < count; i++) + { + CPPUNIT_ASSERT_EQUAL(id.buffer()[i], pointData[i].id); + CPPUNIT_ASSERT_EQUAL(group.buffer()[i], pointData[i].group); + CPPUNIT_ASSERT_EQUAL(uniform.buffer()[i], pointData[i].uniform); + CPPUNIT_ASSERT_EQUAL(string.buffer()[i], pointData[i].string); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].x(), pointData[i].position.x(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].y(), pointData[i].position.y(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].z(), pointData[i].position.z(), /*tolerance=*/1e-6); + } + + // convert based on even group + + const size_t halfCount = count / 2; + + outputPosition.resize(startOffset + halfCount); + outputId.resize(startOffset + halfCount); + outputUniform.resize(startOffset + halfCount); + outputString.resize(startOffset + halfCount); + outputGroup.resize(startOffset + halfCount); + + includeGroups.push_back("test"); + + offsets.clear(); + MultiGroupFilter filter2(includeGroups, excludeGroups, inputTree.cbeginLeaf()->attributeSet()); + pointOffsets(offsets, inputTree, filter2); + + convertPointDataGridPosition(outputPosition, *pointDataGrid, offsets, startOffset, filter2); + convertPointDataGridAttribute(outputId, inputTree, offsets, startOffset, idIndex, /*stride*/1, filter2); + convertPointDataGridAttribute(outputUniform, inputTree, offsets, startOffset, uniformIndex, /*stride*/1, filter2); + convertPointDataGridAttribute(outputString, inputTree, offsets, startOffset, stringIndex, /*stride*/1, filter2); + convertPointDataGridGroup(outputGroup, inputTree, offsets, startOffset, groupIndex, filter2); + + CPPUNIT_ASSERT_EQUAL(size_t(outputPosition.size() - startOffset), size_t(halfCount)); + CPPUNIT_ASSERT_EQUAL(size_t(outputId.size() - startOffset), size_t(halfCount)); + CPPUNIT_ASSERT_EQUAL(size_t(outputUniform.size() - startOffset), size_t(halfCount)); + CPPUNIT_ASSERT_EQUAL(size_t(outputString.size() - startOffset), size_t(halfCount)); + CPPUNIT_ASSERT_EQUAL(size_t(outputGroup.size() - startOffset), size_t(halfCount)); + + pointData.clear(); + + for (unsigned int i = 0; i < halfCount; i++) { + PointData data; + data.id = outputId.buffer()[startOffset + i]; + data.position = outputPosition.buffer()[startOffset + i]; + data.uniform = outputUniform.buffer()[startOffset + i]; + data.string = outputString.buffer()[startOffset + i]; + data.group = outputGroup.buffer()[startOffset + i]; + pointData.push_back(data); + } + + std::sort(pointData.begin(), pointData.end()); + + // compare old and new buffers + + for (unsigned int i = 0; i < halfCount; i++) + { + CPPUNIT_ASSERT_EQUAL(id.buffer()[i*2], pointData[i].id); + CPPUNIT_ASSERT_EQUAL(group.buffer()[i*2], pointData[i].group); + CPPUNIT_ASSERT_EQUAL(uniform.buffer()[i*2], pointData[i].uniform); + CPPUNIT_ASSERT_EQUAL(string.buffer()[i*2], pointData[i].string); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i*2].x(), pointData[i].position.x(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i*2].y(), pointData[i].position.y(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i*2].z(), pointData[i].position.z(), /*tolerance=*/1e-6); + } + + std::remove(filename.c_str()); +} + + +//////////////////////////////////////// + + +void +TestPointConversion::testPointConversionNans() +{ + // generate points + + const size_t count(25); + + AttributeWrapper position(1); + AttributeWrapper xyz(1); + AttributeWrapper id(1); + AttributeWrapper uniform(1); + AttributeWrapper string(1); + GroupWrapper group; + + genPoints(count, /*scale=*/ 1.0, /*stride=*/false, + position, xyz, id, uniform, string, group); + + // set point numbers 0, 10, 20 and 24 to a nan position + + const std::vector nanIndices = { 0, 10, 20, 24 }; + + AttributeWrapper::Handle positionHandle(position); + const Vec3f nanPos(std::nan("0")); + CPPUNIT_ASSERT(nanPos.isNan()); + for (const int& idx : nanIndices) { + positionHandle.set(idx, /*stride*/0, nanPos); + } + + CPPUNIT_ASSERT_EQUAL(count, position.size()); + CPPUNIT_ASSERT_EQUAL(count, id.size()); + CPPUNIT_ASSERT_EQUAL(count, uniform.size()); + CPPUNIT_ASSERT_EQUAL(count, string.size()); + CPPUNIT_ASSERT_EQUAL(count, group.size()); + + // convert point positions into a Point Data Grid + + openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(/*voxelsize*/1.0f); + + tools::PointIndexGrid::Ptr pointIndexGrid = tools::createPointIndexGrid(position, *transform); + PointDataGrid::Ptr pointDataGrid = createPointDataGrid(*pointIndexGrid, position, *transform); + + tools::PointIndexTree& indexTree = pointIndexGrid->tree(); + PointDataTree& tree = pointDataGrid->tree(); + + // set expected point count to the total minus the number of nan positions + const size_t expected = count - nanIndices.size(); + CPPUNIT_ASSERT_EQUAL(expected, static_cast(pointCount(tree))); + + // add id and populate + + appendAttribute(tree, "id"); + populateAttribute>(tree, indexTree, "id", id); + + // add uniform and populate + + appendAttribute(tree, "uniform"); + populateAttribute>(tree, indexTree, "uniform", uniform); + + // add string and populate + + appendAttribute(tree, "string"); + populateAttribute>( + tree, indexTree, "string", string); + + // add group and set membership + + appendGroup(tree, "test"); + setGroup(tree, indexTree, group.buffer(), "test"); + + // create accessor and iterator for Point Data Tree + + const auto leafCIter = tree.cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(5, int(leafCIter->attributeSet().size())); + + CPPUNIT_ASSERT(leafCIter->attributeSet().find("id") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("uniform") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("P") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("string") != AttributeSet::INVALID_POS); + + const auto idIndex = static_cast(leafCIter->attributeSet().find("id")); + const auto uniformIndex = static_cast(leafCIter->attributeSet().find("uniform")); + const auto stringIndex = static_cast(leafCIter->attributeSet().find("string")); + const AttributeSet::Descriptor::GroupIndex groupIndex = + leafCIter->attributeSet().groupIndex("test"); + + // convert back into linear point attribute data + + AttributeWrapper outputPosition(1); + AttributeWrapper outputId(1); + AttributeWrapper outputUniform(1); + AttributeWrapper outputString(1); + GroupWrapper outputGroup; + + outputPosition.resize(position.size()); + outputId.resize(id.size()); + outputUniform.resize(uniform.size()); + outputString.resize(string.size()); + outputGroup.resize(group.size()); + + std::vector offsets; + pointOffsets(offsets, tree); + + convertPointDataGridPosition(outputPosition, *pointDataGrid, offsets, 0); + convertPointDataGridAttribute(outputId, tree, offsets, 0, idIndex, 1); + convertPointDataGridAttribute(outputUniform, tree, offsets, 0, uniformIndex, 1); + convertPointDataGridAttribute(outputString, tree, offsets, 0, stringIndex, 1); + convertPointDataGridGroup(outputGroup, tree, offsets, 0, groupIndex); + + // pack and sort the new buffers based on id + + std::vector pointData(expected); + + for (unsigned int i = 0; i < expected; i++) { + pointData[i].id = outputId.buffer()[i]; + pointData[i].position = outputPosition.buffer()[i]; + pointData[i].uniform = outputUniform.buffer()[i]; + pointData[i].string = outputString.buffer()[i]; + pointData[i].group = outputGroup.buffer()[i]; + } + + std::sort(pointData.begin(), pointData.end()); + + // compare old and new buffers, taking into account the nan position + // which should not have been converted + + for (unsigned int i = 0; i < expected; ++i) + { + size_t iOffset = i; + for (const int& idx : nanIndices) { + if (int(iOffset) >= idx) iOffset += 1; + } + + CPPUNIT_ASSERT_EQUAL(id.buffer()[iOffset], pointData[i].id); + CPPUNIT_ASSERT_EQUAL(group.buffer()[iOffset], pointData[i].group); + CPPUNIT_ASSERT_EQUAL(uniform.buffer()[iOffset], pointData[i].uniform); + CPPUNIT_ASSERT_EQUAL(string.buffer()[iOffset], pointData[i].string); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[iOffset].x(), pointData[i].position.x(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[iOffset].y(), pointData[i].position.y(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[iOffset].z(), pointData[i].position.z(), /*tolerance=*/1e-6); + } +} + + +//////////////////////////////////////// + + +void +TestPointConversion::testStride() +{ + // generate points + + const size_t count(40000); + + AttributeWrapper position(1); + AttributeWrapper xyz(3); + AttributeWrapper id(1); + AttributeWrapper uniform(1); + AttributeWrapper string(1); + GroupWrapper group; + + genPoints(count, /*scale=*/ 100.0, /*stride=*/true, + position, xyz, id, uniform, string, group); + + CPPUNIT_ASSERT_EQUAL(position.size(), count); + CPPUNIT_ASSERT_EQUAL(xyz.size(), count*3); + CPPUNIT_ASSERT_EQUAL(id.size(), count); + + // convert point positions into a Point Data Grid + + const float voxelSize = 1.0f; + openvdb::math::Transform::Ptr transform(openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = tools::createPointIndexGrid(position, *transform); + PointDataGrid::Ptr pointDataGrid = createPointDataGrid(*pointIndexGrid, position, *transform); + + tools::PointIndexTree& indexTree = pointIndexGrid->tree(); + PointDataTree& tree = pointDataGrid->tree(); + + // add id and populate + + appendAttribute(tree, "id"); + populateAttribute>(tree, indexTree, "id", id); + + // add xyz and populate + + appendAttribute(tree, "xyz", 0, /*stride=*/3); + populateAttribute>(tree, indexTree, "xyz", xyz, /*stride=*/3); + + // create accessor and iterator for Point Data Tree + + PointDataTree::LeafCIter leafCIter = tree.cbeginLeaf(); + + CPPUNIT_ASSERT_EQUAL(3, int(leafCIter->attributeSet().size())); + + CPPUNIT_ASSERT(leafCIter->attributeSet().find("id") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("P") != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(leafCIter->attributeSet().find("xyz") != AttributeSet::INVALID_POS); + + const auto idIndex = static_cast(leafCIter->attributeSet().find("id")); + const auto xyzIndex = static_cast(leafCIter->attributeSet().find("xyz")); + + // convert back into linear point attribute data + + AttributeWrapper outputPosition(1); + AttributeWrapper outputXyz(3); + AttributeWrapper outputId(1); + + // test offset the whole point block by an arbitrary amount + + Index64 startOffset = 10; + + outputPosition.resize(startOffset + position.size()); + outputXyz.resize((startOffset + id.size())*3); + outputId.resize(startOffset + id.size()); + + std::vector offsets; + pointOffsets(offsets, tree); + + convertPointDataGridPosition(outputPosition, *pointDataGrid, offsets, startOffset); + convertPointDataGridAttribute(outputId, tree, offsets, startOffset, idIndex); + convertPointDataGridAttribute(outputXyz, tree, offsets, startOffset, xyzIndex, /*stride=*/3); + + // pack and sort the new buffers based on id + + std::vector pointData; + + pointData.resize(count); + + for (unsigned int i = 0; i < count; i++) { + pointData[i].id = outputId.buffer()[startOffset + i]; + pointData[i].position = outputPosition.buffer()[startOffset + i]; + for (unsigned int j = 0; j < 3; j++) { + pointData[i].xyz[j] = outputXyz.buffer()[startOffset * 3 + i * 3 + j]; + } + } + + std::sort(pointData.begin(), pointData.end()); + + // compare old and new buffers + + for (unsigned int i = 0; i < count; i++) + { + CPPUNIT_ASSERT_EQUAL(id.buffer()[i], pointData[i].id); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].x(), pointData[i].position.x(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].y(), pointData[i].position.y(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(position.buffer()[i].z(), pointData[i].position.z(), /*tolerance=*/1e-6); + CPPUNIT_ASSERT_EQUAL(Vec3i(xyz.buffer()[i*3], xyz.buffer()[i*3+1], xyz.buffer()[i*3+2]), pointData[i].xyz); + } +} + + +//////////////////////////////////////// + + +void +TestPointConversion::testComputeVoxelSize() +{ + struct Local { + + static PointDataGrid::Ptr genPointsGrid(const float voxelSize, const AttributeWrapper& positions) + { + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + tools::PointIndexGrid::Ptr pointIndexGrid = tools::createPointIndexGrid(positions, *transform); + return createPointDataGrid(*pointIndexGrid, positions, *transform); + } + }; + + // minimum and maximum voxel sizes + + const auto minimumVoxelSize = static_cast(math::Pow(double(3e-15), 1.0/3.0)); + const auto maximumVoxelSize = + static_cast(math::Pow(double(std::numeric_limits::max()), 1.0/3.0)); + + AttributeWrapper position(/*stride*/1); + AttributeWrapper positionD(/*stride*/1); + + // test with no positions + + { + const float voxelSize = computeVoxelSize(position, /*points per voxel*/8); + CPPUNIT_ASSERT_EQUAL(voxelSize, 0.1f); + } + + // test with one point + + { + position.resize(1); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f)); + + const float voxelSize = computeVoxelSize(position, /*points per voxel*/8); + CPPUNIT_ASSERT_EQUAL(voxelSize, 0.1f); + } + + // test with n points, where n > 1 && n <= num points per voxel + + { + position.resize(7); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(-8.6f, 0.0f,-23.8f)); + positionHandle.set(1, 0, Vec3f( 8.6f, 7.8f, 23.8f)); + + for (size_t i = 2; i < 7; ++ i) + positionHandle.set(i, 0, Vec3f(0.0f)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(18.5528f, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(5.51306f, voxelSize, /*tolerance=*/1e-4); + + // test decimal place accuracy + + voxelSize = computeVoxelSize(position, /*points per voxel*/1, math::Mat4d::identity(), 10); + CPPUNIT_ASSERT_DOUBLES_EQUAL(5.5130610466f, voxelSize, /*tolerance=*/1e-9); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1, math::Mat4d::identity(), 1); + CPPUNIT_ASSERT_EQUAL(5.5f, voxelSize); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1, math::Mat4d::identity(), 0); + CPPUNIT_ASSERT_EQUAL(6.0f, voxelSize); + } + + // test coplanar points (Y=0) + + { + position.resize(5); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f, 0.0f, 10.0f)); + positionHandle.set(1, 0, Vec3f(0.0f, 0.0f, -10.0f)); + positionHandle.set(2, 0, Vec3f(20.0f, 0.0f, -10.0f)); + positionHandle.set(3, 0, Vec3f(20.0f, 0.0f, 10.0f)); + positionHandle.set(4, 0, Vec3f(10.0f, 0.0f, 0.0f)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(20.0f, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(11.696f, voxelSize, /*tolerance=*/1e-4); + } + + // test collinear points (X=0, Y=0) + + { + position.resize(5); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f, 0.0f, 10.0f)); + positionHandle.set(1, 0, Vec3f(0.0f, 0.0f, -10.0f)); + positionHandle.set(2, 0, Vec3f(0.0f, 0.0f, -10.0f)); + positionHandle.set(3, 0, Vec3f(0.0f, 0.0f, 10.0f)); + positionHandle.set(4, 0, Vec3f(0.0f, 0.0f, 0.0f)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/5); + CPPUNIT_ASSERT_DOUBLES_EQUAL(20.0f, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(8.32034f, voxelSize, /*tolerance=*/1e-4); + } + + // test min limit collinear points (X=0, Y=0, Z=+/-float min) + + { + position.resize(2); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f, 0.0f, -std::numeric_limits::min())); + positionHandle.set(1, 0, Vec3f(0.0f, 0.0f, std::numeric_limits::min())); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/2); + CPPUNIT_ASSERT_DOUBLES_EQUAL(minimumVoxelSize, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(minimumVoxelSize, voxelSize, /*tolerance=*/1e-4); + } + + // test max limit collinear points (X=+/-float max, Y=0, Z=0) + + { + position.resize(2); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(-std::numeric_limits::max(), 0.0f, 0.0f)); + positionHandle.set(1, 0, Vec3f(std::numeric_limits::max(), 0.0f, 0.0f)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/2); + CPPUNIT_ASSERT_DOUBLES_EQUAL(maximumVoxelSize, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(maximumVoxelSize, voxelSize, /*tolerance=*/1e-4); + } + + // max pointsPerVoxel + + { + position.resize(2); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0)); + positionHandle.set(1, 0, Vec3f(1)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/std::numeric_limits::max()); + CPPUNIT_ASSERT_EQUAL(voxelSize, 1.0f); + } + + // limits test + + { + positionD.resize(2); + AttributeWrapper::Handle positionHandleD(positionD); + positionHandleD.set(0, 0, Vec3d(0)); + positionHandleD.set(1, 0, Vec3d(std::numeric_limits::max())); + + float voxelSize = computeVoxelSize(positionD, /*points per voxel*/2); + CPPUNIT_ASSERT_EQUAL(voxelSize, maximumVoxelSize); + } + + { + const float smallest(std::numeric_limits::min()); + + position.resize(4); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f)); + positionHandle.set(1, 0, Vec3f(smallest)); + positionHandle.set(2, 0, Vec3f(smallest, 0.0f, 0.0f)); + positionHandle.set(3, 0, Vec3f(smallest, 0.0f, smallest)); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/4); + CPPUNIT_ASSERT_EQUAL(voxelSize, minimumVoxelSize); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(minimumVoxelSize, voxelSize, /*tolerance=*/1e-4); + + PointDataGrid::Ptr grid = Local::genPointsGrid(voxelSize, position); + CPPUNIT_ASSERT_EQUAL(grid->activeVoxelCount(), Index64(1)); + } + + // the smallest possible vector extent that can exist from an input set + // without being clamped to the minimum voxel size + // is Tolerance::value() + std::numeric_limits::min() + + { + position.resize(2); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f)); + positionHandle.set(1, 0, Vec3f(math::Tolerance::value() + std::numeric_limits::min())); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_EQUAL(voxelSize, minimumVoxelSize); + } + + // in-between smallest extent and ScaleMap determinant test + + { + position.resize(2); + AttributeWrapper::Handle positionHandle(position); + positionHandle.set(0, 0, Vec3f(0.0f)); + positionHandle.set(1, 0, Vec3f(math::Tolerance::value()*1e8 + std::numeric_limits::min())); + + float voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_EQUAL(voxelSize, float(math::Pow(double(3e-15), 1.0/3.0))); + } + + { + const float smallValue(1e-5f); + + position.resize(300000); + AttributeWrapper::Handle positionHandle(position); + + for (size_t i = 0; i < 100000; ++ i) { + positionHandle.set(i, 0, Vec3f(smallValue*float(i), 0, 0)); + positionHandle.set(i+100000, 0, Vec3f(0, smallValue*float(i), 0)); + positionHandle.set(i+200000, 0, Vec3f(0, 0, smallValue*float(i))); + } + + float voxelSize = computeVoxelSize(position, /*points per voxel*/10); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.00012f, voxelSize, /*tolerance=*/1e-4); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2e-5, voxelSize, /*tolerance=*/1e-6); + + PointDataGrid::Ptr grid = Local::genPointsGrid(voxelSize, position); + CPPUNIT_ASSERT_EQUAL(grid->activeVoxelCount(), Index64(150001)); + + // check zero decimal place still returns valid result + + voxelSize = computeVoxelSize(position, /*points per voxel*/1, math::Mat4d::identity(), 0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2e-5, voxelSize, /*tolerance=*/1e-6); + } + + // random position generation within two bounds of equal size. + // This test distributes 1000 points within a 1x1x1 box centered at (0,0,0) + // and another 1000 points within a separate 1x1x1 box centered at (20,20,20). + // Points are randomly positioned however can be defined as having a stochastic + // distribution. Tests that sparsity between these data sets causes no issues + // and that computeVoxelSize produces accurate results + + { + position.resize(2000); + AttributeWrapper::Handle positionHandle(position); + openvdb::math::Random01 randNumber(0); + + // positions between -0.5 and 0.5 + + for (size_t i = 0; i < 1000; ++ i) { + const Vec3f pos(randNumber() - 0.5f); + positionHandle.set(i, 0, pos); + } + + // positions between 19.5 and 20.5 + + for (size_t i = 1000; i < 2000; ++ i) { + const Vec3f pos(randNumber() - 0.5f + 20.0f); + positionHandle.set(i, 0, pos); + } + + float voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.00052f, voxelSize, /*tolerance=*/1e-4); + + PointDataGrid::Ptr grid = Local::genPointsGrid(voxelSize, position); + const auto pointsPerVoxel = static_cast( + math::Round(2000.0f / static_cast(grid->activeVoxelCount()))); + CPPUNIT_ASSERT_EQUAL(pointsPerVoxel, Index64(1)); + } + + // random position generation within three bounds of varying size. + // This test distributes 1000 points within a 1x1x1 box centered at (0.5,0.5,0,5) + // another 1000 points within a separate 10x10x10 box centered at (15,15,15) and + // a final 1000 points within a separate 50x50x50 box centered at (75,75,75) + // Points are randomly positioned however can be defined as having a stochastic + // distribution. Tests that sparsity between these data sets causes no issues as + // well as computeVoxelSize producing a good average result + + { + position.resize(3000); + AttributeWrapper::Handle positionHandle(position); + openvdb::math::Random01 randNumber(0); + + // positions between 0 and 1 + + for (size_t i = 0; i < 1000; ++ i) { + const Vec3f pos(randNumber()); + positionHandle.set(i, 0, pos); + } + + // positions between 10 and 20 + + for (size_t i = 1000; i < 2000; ++ i) { + const Vec3f pos((randNumber() * 10.0f) + 10.0f); + positionHandle.set(i, 0, pos); + } + + // positions between 50 and 100 + + for (size_t i = 2000; i < 3000; ++ i) { + const Vec3f pos((randNumber() * 50.0f) + 50.0f); + positionHandle.set(i, 0, pos); + } + + float voxelSize = computeVoxelSize(position, /*points per voxel*/10); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.24758f, voxelSize, /*tolerance=*/1e-3); + + PointDataGrid::Ptr grid = Local::genPointsGrid(voxelSize, position); + auto pointsPerVoxel = static_cast( + math::Round(3000.0f/ static_cast(grid->activeVoxelCount()))); + CPPUNIT_ASSERT(math::isApproxEqual(pointsPerVoxel, Index64(10), Index64(2))); + + voxelSize = computeVoxelSize(position, /*points per voxel*/1); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.00231f, voxelSize, /*tolerance=*/1e-4); + + grid = Local::genPointsGrid(voxelSize, position); + pointsPerVoxel = static_cast( + math::Round(3000.0f/ static_cast(grid->activeVoxelCount()))); + CPPUNIT_ASSERT_EQUAL(pointsPerVoxel, Index64(1)); + } + + // Generate a sphere + // NOTE: The sphere does NOT provide uniform distribution + + const size_t count(40000); + + position.resize(0); + + AttributeWrapper xyz(1); + AttributeWrapper id(1); + AttributeWrapper uniform(1); + AttributeWrapper string(1); + GroupWrapper group; + + genPoints(count, /*scale=*/ 100.0, /*stride=*/false, position, xyz, id, uniform, string, group); + + CPPUNIT_ASSERT_EQUAL(position.size(), count); + CPPUNIT_ASSERT_EQUAL(id.size(), count); + CPPUNIT_ASSERT_EQUAL(uniform.size(), count); + CPPUNIT_ASSERT_EQUAL(string.size(), count); + CPPUNIT_ASSERT_EQUAL(group.size(), count); + + // test a distributed point set around a sphere + + { + const float voxelSize = computeVoxelSize(position, /*points per voxel*/2); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.6275f, voxelSize, /*tolerance=*/0.01); + + PointDataGrid::Ptr grid = Local::genPointsGrid(voxelSize, position); + const Index64 pointsPerVoxel = count / grid->activeVoxelCount(); + CPPUNIT_ASSERT_EQUAL(pointsPerVoxel, Index64(2)); + } + + // test with given target transforms + + { + // test that a different scale doesn't change the result + + openvdb::math::Transform::Ptr transform1(openvdb::math::Transform::createLinearTransform(0.33)); + openvdb::math::Transform::Ptr transform2(openvdb::math::Transform::createLinearTransform(0.87)); + + math::UniformScaleMap::ConstPtr scaleMap1 = transform1->constMap(); + math::UniformScaleMap::ConstPtr scaleMap2 = transform2->constMap(); + CPPUNIT_ASSERT(scaleMap1.get()); + CPPUNIT_ASSERT(scaleMap2.get()); + + math::AffineMap::ConstPtr affineMap1 = scaleMap1->getAffineMap(); + math::AffineMap::ConstPtr affineMap2 = scaleMap2->getAffineMap(); + + float voxelSize1 = computeVoxelSize(position, /*points per voxel*/2, affineMap1->getMat4()); + float voxelSize2 = computeVoxelSize(position, /*points per voxel*/2, affineMap2->getMat4()); + CPPUNIT_ASSERT_EQUAL(voxelSize1, voxelSize2); + + // test that applying a rotation roughly calculates to the same result for this example + // NOTE: distribution is not uniform + + // Rotate by 45 degrees in X, Y, Z + + transform1->postRotate(M_PI / 4.0, math::X_AXIS); + transform1->postRotate(M_PI / 4.0, math::Y_AXIS); + transform1->postRotate(M_PI / 4.0, math::Z_AXIS); + + affineMap1 = transform1->constMap(); + CPPUNIT_ASSERT(affineMap1.get()); + + float voxelSize3 = computeVoxelSize(position, /*points per voxel*/2, affineMap1->getMat4()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(voxelSize1, voxelSize3, 0.1); + + // test that applying a translation roughly calculates to the same result for this example + + transform1->postTranslate(Vec3d(-5.0f, 3.3f, 20.1f)); + affineMap1 = transform1->constMap(); + CPPUNIT_ASSERT(affineMap1.get()); + + float voxelSize4 = computeVoxelSize(position, /*points per voxel*/2, affineMap1->getMat4()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(voxelSize1, voxelSize4, 0.1); + } +} + +void +TestPointConversion::testPrecision() +{ + const double tolerance = math::Tolerance::value(); + + { // test values far from origin + const double voxelSize = 0.5; + const float halfVoxelSize = 0.25f; + auto transform = math::Transform::createLinearTransform(voxelSize); + + float onBorder = 1000.0f + halfVoxelSize; // can be represented exactly in floating-point + float beforeBorder = std::nextafterf(onBorder, /*to=*/0.0f); + float afterBorder = std::nextafterf(onBorder, /*to=*/2000.0f); + + const Vec3f positionBefore(beforeBorder, afterBorder, onBorder); + + std::vector points{positionBefore}; + PointAttributeVector wrapper(points); + auto pointIndexGrid = tools::createPointIndexGrid( + wrapper, *transform); + + Vec3f positionAfterNull; + Vec3f positionAfterFixed16; + + { // null codec + auto points = createPointDataGrid( + *pointIndexGrid, wrapper, *transform); + + auto leafIter = points->tree().cbeginLeaf(); + auto indexIter = leafIter->beginIndexOn(); + auto handle = AttributeHandle(leafIter->constAttributeArray("P")); + + const auto& ijk = indexIter.getCoord(); + + CPPUNIT_ASSERT_EQUAL(ijk.x(), 2000); + CPPUNIT_ASSERT_EQUAL(ijk.y(), 2001); + CPPUNIT_ASSERT_EQUAL(ijk.z(), 2001); // on border value is stored in the higher voxel + + const Vec3f positionVoxelSpace = handle.get(*indexIter); + + // voxel-space range: -0.5f >= value > 0.5f + + CPPUNIT_ASSERT(positionVoxelSpace.x() > 0.49f && positionVoxelSpace.x() < 0.5f); + CPPUNIT_ASSERT(positionVoxelSpace.y() > -0.5f && positionVoxelSpace.y() < -0.49f); + CPPUNIT_ASSERT(positionVoxelSpace.z() == -0.5f); // on border value is stored at -0.5f + + positionAfterNull = Vec3f(transform->indexToWorld(positionVoxelSpace + ijk.asVec3d())); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.x(), positionBefore.x(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.y(), positionBefore.y(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.z(), positionBefore.z(), tolerance); + } + + { // fixed 16-bit codec + auto points = createPointDataGrid, PointDataGrid>( + *pointIndexGrid, wrapper, *transform); + + auto leafIter = points->tree().cbeginLeaf(); + auto indexIter = leafIter->beginIndexOn(); + auto handle = AttributeHandle(leafIter->constAttributeArray("P")); + + const auto& ijk = indexIter.getCoord(); + + CPPUNIT_ASSERT_EQUAL(ijk.x(), 2000); + CPPUNIT_ASSERT_EQUAL(ijk.y(), 2001); + CPPUNIT_ASSERT_EQUAL(ijk.z(), 2001); // on border value is stored in the higher voxel + + const Vec3f positionVoxelSpace = handle.get(*indexIter); + + // voxel-space range: -0.5f >= value > 0.5f + + CPPUNIT_ASSERT(positionVoxelSpace.x() > 0.49f && positionVoxelSpace.x() < 0.5f); + CPPUNIT_ASSERT(positionVoxelSpace.y() > -0.5f && positionVoxelSpace.y() < -0.49f); + CPPUNIT_ASSERT(positionVoxelSpace.z() == -0.5f); // on border value is stored at -0.5f + + positionAfterFixed16 = Vec3f(transform->indexToWorld( + positionVoxelSpace + ijk.asVec3d())); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.x(), positionBefore.x(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.y(), positionBefore.y(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.z(), positionBefore.z(), tolerance); + } + + // at this precision null codec == fixed-point 16-bit codec + + CPPUNIT_ASSERT_EQUAL(positionAfterNull.x(), positionAfterFixed16.x()); + CPPUNIT_ASSERT_EQUAL(positionAfterNull.y(), positionAfterFixed16.y()); + CPPUNIT_ASSERT_EQUAL(positionAfterNull.z(), positionAfterFixed16.z()); + } + + { // test values near to origin + const double voxelSize = 0.5; + const float halfVoxelSize = 0.25f; + auto transform = math::Transform::createLinearTransform(voxelSize); + + float onBorder = 0.0f+halfVoxelSize; + float beforeBorder = std::nextafterf(onBorder, /*to=*/0.0f); + float afterBorder = std::nextafterf(onBorder, /*to=*/2000.0f); + + const Vec3f positionBefore(beforeBorder, afterBorder, onBorder); + + std::vector points{positionBefore}; + PointAttributeVector wrapper(points); + auto pointIndexGrid = tools::createPointIndexGrid( + wrapper, *transform); + + Vec3f positionAfterNull; + Vec3f positionAfterFixed16; + + { // null codec + auto points = createPointDataGrid( + *pointIndexGrid, wrapper, *transform); + + auto leafIter = points->tree().cbeginLeaf(); + auto indexIter = leafIter->beginIndexOn(); + auto handle = AttributeHandle(leafIter->constAttributeArray("P")); + + const auto& ijk = indexIter.getCoord(); + + CPPUNIT_ASSERT_EQUAL(ijk.x(), 0); + CPPUNIT_ASSERT_EQUAL(ijk.y(), 1); + CPPUNIT_ASSERT_EQUAL(ijk.z(), 1); // on border value is stored in the higher voxel + + const Vec3f positionVoxelSpace = handle.get(*indexIter); + + // voxel-space range: -0.5f >= value > 0.5f + + CPPUNIT_ASSERT(positionVoxelSpace.x() > 0.49f && positionVoxelSpace.x() < 0.5f); + CPPUNIT_ASSERT(positionVoxelSpace.y() > -0.5f && positionVoxelSpace.y() < -0.49f); + CPPUNIT_ASSERT(positionVoxelSpace.z() == -0.5f); // on border value is stored at -0.5f + + positionAfterNull = Vec3f(transform->indexToWorld(positionVoxelSpace + ijk.asVec3d())); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.x(), positionBefore.x(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.y(), positionBefore.y(), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterNull.z(), positionBefore.z(), tolerance); + } + + { // fixed 16-bit codec - at this precision, this codec results in lossy compression + auto points = createPointDataGrid, PointDataGrid>( + *pointIndexGrid, wrapper, *transform); + + auto leafIter = points->tree().cbeginLeaf(); + auto indexIter = leafIter->beginIndexOn(); + auto handle = AttributeHandle(leafIter->constAttributeArray("P")); + + const auto& ijk = indexIter.getCoord(); + + CPPUNIT_ASSERT_EQUAL(ijk.x(), 0); + CPPUNIT_ASSERT_EQUAL(ijk.y(), 1); + CPPUNIT_ASSERT_EQUAL(ijk.z(), 1); // on border value is stored in the higher voxel + + const Vec3f positionVoxelSpace = handle.get(*indexIter); + + // voxel-space range: -0.5f >= value > 0.5f + + CPPUNIT_ASSERT(positionVoxelSpace.x() == 0.5f); // before border is clamped to 0.5f + CPPUNIT_ASSERT(positionVoxelSpace.y() == -0.5f); // after border is clamped to -0.5f + CPPUNIT_ASSERT(positionVoxelSpace.z() == -0.5f); // on border is stored at -0.5f + + positionAfterFixed16 = Vec3f(transform->indexToWorld( + positionVoxelSpace + ijk.asVec3d())); + + // reduce tolerance to handle lack of precision + + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.x(), positionBefore.x(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.y(), positionBefore.y(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(positionAfterFixed16.z(), positionBefore.z(), tolerance); + } + + // only z matches precisely due to lossy compression + + CPPUNIT_ASSERT(positionAfterNull.x() != positionAfterFixed16.x()); + CPPUNIT_ASSERT(positionAfterNull.y() != positionAfterFixed16.y()); + CPPUNIT_ASSERT_EQUAL(positionAfterNull.z(), positionAfterFixed16.z()); + } +} diff --git a/openvdb/unittest/TestPointCount.cc b/openvdb/unittest/TestPointCount.cc new file mode 100644 index 00000000..7f520861 --- /dev/null +++ b/openvdb/unittest/TestPointCount.cc @@ -0,0 +1,849 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include + +#include +#include +#include + +#include +#include // for std::remove() +#include // for std::getenv() +#include +#include + +#ifdef _MSC_VER +#include +#endif + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointCount: public CppUnit::TestCase +{ +public: + + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointCount); + CPPUNIT_TEST(testCount); + CPPUNIT_TEST(testGroup); + CPPUNIT_TEST(testOffsets); + CPPUNIT_TEST(testCountGrid); + CPPUNIT_TEST_SUITE_END(); + + void testCount(); + void testGroup(); + void testOffsets(); + void testCountGrid(); + +}; // class TestPointCount + +using LeafType = PointDataTree::LeafNodeType; +using ValueType = LeafType::ValueType; + + +struct NotZeroFilter +{ + NotZeroFilter() = default; + static bool initialized() { return true; } + template + void reset(const LeafT&) { } + template + bool valid(const IterT& iter) const { + return *iter != 0; + } +}; + +void +TestPointCount::testCount() +{ + // create a tree and check there are no points + + PointDataGrid::Ptr grid = createGrid(); + PointDataTree& tree = grid->tree(); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(0)); + + // add a new leaf to a tree and re-test + + LeafType* leafPtr = tree.touchLeaf(openvdb::Coord(0, 0, 0)); + LeafType& leaf(*leafPtr); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(0)); + + // now manually set some offsets + + leaf.setOffsetOn(0, 4); + leaf.setOffsetOn(1, 7); + + ValueVoxelCIter voxelIter = leaf.beginValueVoxel(openvdb::Coord(0, 0, 0)); + + IndexIter testIter(voxelIter, NullFilter()); + + leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0)); + + CPPUNIT_ASSERT_EQUAL(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0))), 0); + CPPUNIT_ASSERT_EQUAL(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0)).end()), 4); + + CPPUNIT_ASSERT_EQUAL(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1))), 4); + CPPUNIT_ASSERT_EQUAL(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1)).end()), 7); + + // test filtered, index voxel iterator + + CPPUNIT_ASSERT_EQUAL(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0), NotZeroFilter())), 1); + CPPUNIT_ASSERT_EQUAL(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0), NotZeroFilter()).end()), 4); + + { + LeafType::IndexVoxelIter iter = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0)); + + CPPUNIT_ASSERT_EQUAL(int(*iter), 0); + CPPUNIT_ASSERT_EQUAL(int(iter.end()), 4); + + LeafType::IndexVoxelIter iter2 = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1)); + + CPPUNIT_ASSERT_EQUAL(int(*iter2), 4); + CPPUNIT_ASSERT_EQUAL(int(iter2.end()), 7); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter2), Index64(7 - 4)); + + // check pointCount ignores active/inactive state + + leaf.setValueOff(1); + + LeafType::IndexVoxelIter iter3 = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1)); + + CPPUNIT_ASSERT_EQUAL(iterCount(iter3), Index64(7 - 4)); + + leaf.setValueOn(1); + } + + // one point per voxel + + for (unsigned int i = 0; i < LeafType::SIZE; i++) { + leaf.setOffsetOn(i, i); + } + + CPPUNIT_ASSERT_EQUAL(leaf.pointCount(), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(leaf.onPointCount(), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(leaf.offPointCount(), Index64(0)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(0)); + + // manually de-activate two voxels + + leaf.setValueOff(100); + leaf.setValueOff(101); + + CPPUNIT_ASSERT_EQUAL(leaf.pointCount(), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(leaf.onPointCount(), Index64(LeafType::SIZE - 3)); + CPPUNIT_ASSERT_EQUAL(leaf.offPointCount(), Index64(2)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE - 3)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(2)); + + // one point per every other voxel and de-activate empty voxels + + unsigned sum = 0; + + for (unsigned int i = 0; i < LeafType::SIZE; i++) { + leaf.setOffsetOn(i, sum); + if (i % 2 == 0) sum++; + } + + leaf.updateValueMask(); + + CPPUNIT_ASSERT_EQUAL(leaf.pointCount(), Index64(LeafType::SIZE / 2)); + CPPUNIT_ASSERT_EQUAL(leaf.onPointCount(), Index64(LeafType::SIZE / 2)); + CPPUNIT_ASSERT_EQUAL(leaf.offPointCount(), Index64(0)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(LeafType::SIZE / 2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE / 2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(0)); + + // add a new non-empty leaf and check totalPointCount is correct + + LeafType* leaf2Ptr = tree.touchLeaf(openvdb::Coord(0, 0, 8)); + LeafType& leaf2(*leaf2Ptr); + + // on adding, tree now obtains ownership and is reponsible for deletion + + for (unsigned int i = 0; i < LeafType::SIZE; i++) { + leaf2.setOffsetOn(i, i); + } + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(LeafType::SIZE / 2 + LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE / 2 + LeafType::SIZE - 1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(0)); +} + + +void +TestPointCount::testGroup() +{ + using namespace openvdb::math; + + using Descriptor = AttributeSet::Descriptor; + + // four points in the same leaf + + std::vector positions{{1, 1, 1}, {1, 2, 1}, {2, 1, 1}, {2, 2, 1}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // setup temp directory + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + std::string filename; + + // check one leaf + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(1)); + + // retrieve first and last leaf attribute sets + + PointDataTree::LeafIter leafIter = tree.beginLeaf(); + const AttributeSet& firstAttributeSet = leafIter->attributeSet(); + + // ensure zero groups + CPPUNIT_ASSERT_EQUAL(firstAttributeSet.descriptor().groupMap().size(), size_t(0)); + + {// add an empty group + appendGroup(tree, "test"); + + CPPUNIT_ASSERT_EQUAL(firstAttributeSet.descriptor().groupMap().size(), size_t(1)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(0)); + CPPUNIT_ASSERT_EQUAL(leafIter->pointCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(leafIter->onPointCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(leafIter->offPointCount(), Index64(0)); + + // no points found when filtered by the empty group + + CPPUNIT_ASSERT_EQUAL(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(0)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(0)); + } + + { // assign two points to the group, test offsets and point counts + const Descriptor::GroupIndex index = firstAttributeSet.groupIndex("test"); + + CPPUNIT_ASSERT(index.first != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(index.first < firstAttributeSet.size()); + + AttributeArray& array = leafIter->attributeArray(index.first); + + CPPUNIT_ASSERT(isGroup(array)); + + GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + groupArray.set(0, GroupType(1) << index.second); + groupArray.set(3, GroupType(1) << index.second); + + // only two out of four points should be found when group filtered + + GroupFilter firstGroupFilter("test", firstAttributeSet); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(2)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(2)); + + { + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, ActiveFilter())), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, InactiveFilter())), Index64(0)); + } + + CPPUNIT_ASSERT_NO_THROW(leafIter->validateOffsets()); + + // manually modify offsets so one of the points is marked as inactive + + std::vector offsets, modifiedOffsets; + offsets.resize(PointDataTree::LeafNodeType::SIZE); + modifiedOffsets.resize(PointDataTree::LeafNodeType::SIZE); + + for (Index n = 0; n < PointDataTree::LeafNodeType::NUM_VALUES; n++) { + const unsigned offset = leafIter->getValue(n); + offsets[n] = offset; + modifiedOffsets[n] = offset > 0 ? offset - 1 : offset; + } + + leafIter->setOffsets(modifiedOffsets); + + // confirm that validation fails + + CPPUNIT_ASSERT_THROW(leafIter->validateOffsets(), openvdb::ValueError); + + // replace offsets with original offsets but leave value mask + + leafIter->setOffsets(offsets, /*updateValueMask=*/ false); + + // confirm that validation now succeeds + + CPPUNIT_ASSERT_NO_THROW(leafIter->validateOffsets()); + + // ensure active / inactive point counts are correct + + CPPUNIT_ASSERT_EQUAL(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(2)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, ActiveFilter())), Index64(1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, InactiveFilter())), Index64(1)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(3)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(1)); + + // write out grid to a temp file + { + filename = tempDir + "/openvdb_test_point_load"; + + io::File fileOut(filename); + + GridCPtrVec grids{grid}; + + fileOut.write(grids); + } + + // test point count of a delay-loaded grid + { + io::File fileIn(filename); + fileIn.open(); + + GridPtrVecPtr grids = fileIn.getGrids(); + + fileIn.close(); + + CPPUNIT_ASSERT_EQUAL(grids->size(), size_t(1)); + + PointDataGrid::Ptr inputGrid = GridBase::grid((*grids)[0]); + + CPPUNIT_ASSERT(inputGrid); + + PointDataTree& inputTree = inputGrid->tree(); + const auto& attributeSet = inputTree.cbeginLeaf()->attributeSet(); + + GroupFilter groupFilter("test", attributeSet); + + bool inCoreOnly = true; + + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, NullFilter(), inCoreOnly), Index64(0)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, ActiveFilter(), inCoreOnly), Index64(0)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, InactiveFilter(), inCoreOnly), Index64(0)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, groupFilter, inCoreOnly), Index64(0)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, BinaryFilter( + groupFilter, ActiveFilter()), inCoreOnly), Index64(0)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, BinaryFilter( + groupFilter, InactiveFilter()), inCoreOnly), Index64(0)); + + inCoreOnly = false; + + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, NullFilter(), inCoreOnly), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, ActiveFilter(), inCoreOnly), Index64(3)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, InactiveFilter(), inCoreOnly), Index64(1)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, groupFilter, inCoreOnly), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, BinaryFilter( + groupFilter, ActiveFilter()), inCoreOnly), Index64(1)); + CPPUNIT_ASSERT_EQUAL(pointCount(inputTree, BinaryFilter( + groupFilter, InactiveFilter()), inCoreOnly), Index64(1)); + } + + // update the value mask and confirm point counts once again + + leafIter->updateValueMask(); + + CPPUNIT_ASSERT_NO_THROW(leafIter->validateOffsets()); + + auto& attributeSet = tree.cbeginLeaf()->attributeSet(); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree, GroupFilter("test", attributeSet)), Index64(2)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, ActiveFilter())), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, BinaryFilter( + firstGroupFilter, InactiveFilter())), Index64(0)); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, ActiveFilter()), Index64(4)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, InactiveFilter()), Index64(0)); + } + + // create a tree with multiple leaves + + positions.emplace_back(20, 1, 1); + positions.emplace_back(1, 20, 1); + positions.emplace_back(1, 1, 20); + + grid = createPointDataGrid(positions, *transform); + PointDataTree& tree2 = grid->tree(); + + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), Index32(4)); + + leafIter = tree2.beginLeaf(); + + appendGroup(tree2, "test"); + + { // assign two points to the group + const auto& attributeSet = leafIter->attributeSet(); + const Descriptor::GroupIndex index = attributeSet.groupIndex("test"); + + CPPUNIT_ASSERT(index.first != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(index.first < attributeSet.size()); + + AttributeArray& array = leafIter->attributeArray(index.first); + + CPPUNIT_ASSERT(isGroup(array)); + + GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + groupArray.set(0, GroupType(1) << index.second); + groupArray.set(3, GroupType(1) << index.second); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree2, GroupFilter("test", attributeSet)), Index64(2)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(2)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree2), Index64(7)); + } + + ++leafIter; + + CPPUNIT_ASSERT(leafIter); + + { // assign another point to the group in a different leaf + const auto& attributeSet = leafIter->attributeSet(); + const Descriptor::GroupIndex index = attributeSet.groupIndex("test"); + + CPPUNIT_ASSERT(index.first != AttributeSet::INVALID_POS); + CPPUNIT_ASSERT(index.first < leafIter->attributeSet().size()); + + AttributeArray& array = leafIter->attributeArray(index.first); + + CPPUNIT_ASSERT(isGroup(array)); + + GroupAttributeArray& groupArray = GroupAttributeArray::cast(array); + + groupArray.set(0, GroupType(1) << index.second); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree2, GroupFilter("test", attributeSet)), Index64(3)); + CPPUNIT_ASSERT_EQUAL(leafIter->groupPointCount("test"), Index64(1)); + CPPUNIT_ASSERT_EQUAL(pointCount(tree2), Index64(7)); + } +} + + +void +TestPointCount::testOffsets() +{ + using namespace openvdb::math; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + // five points across four leafs + + std::vector positions{{1, 1, 1}, {1, 101, 1}, {2, 101, 1}, {101, 1, 1}, {101, 101, 1}}; + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + { // all point offsets + std::vector offsets; + Index64 total = pointOffsets(offsets, tree); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(3)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(4)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(5)); + CPPUNIT_ASSERT_EQUAL(total, Index64(5)); + } + + { // all point offsets when using a non-existant exclude group + + std::vector offsets; + + std::vector includeGroups; + std::vector excludeGroups{"empty"}; + + MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet()); + Index64 total = pointOffsets(offsets, tree, filter); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(3)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(4)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(5)); + CPPUNIT_ASSERT_EQUAL(total, Index64(5)); + } + + appendGroup(tree, "test"); + + // add one point to the group from the leaf that contains two points + + PointDataTree::LeafIter iter = ++tree.beginLeaf(); + GroupWriteHandle groupHandle = iter->groupWriteHandle("test"); + groupHandle.set(0, true); + + { // include this group + std::vector offsets; + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet()); + Index64 total = pointOffsets(offsets, tree, filter); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(0)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(1)); + CPPUNIT_ASSERT_EQUAL(total, Index64(1)); + } + + { // exclude this group + std::vector offsets; + + std::vector includeGroups; + std::vector excludeGroups{"test"}; + + MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet()); + Index64 total = pointOffsets(offsets, tree, filter); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(2)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(3)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(4)); + CPPUNIT_ASSERT_EQUAL(total, Index64(4)); + } + + // setup temp directory + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + std::string filename; + + // write out grid to a temp file + { + filename = tempDir + "/openvdb_test_point_load"; + + io::File fileOut(filename); + + GridCPtrVec grids{grid}; + + fileOut.write(grids); + } + + // test point offsets for a delay-loaded grid + { + io::File fileIn(filename); + fileIn.open(); + + GridPtrVecPtr grids = fileIn.getGrids(); + + fileIn.close(); + + CPPUNIT_ASSERT_EQUAL(grids->size(), size_t(1)); + + PointDataGrid::Ptr inputGrid = GridBase::grid((*grids)[0]); + + CPPUNIT_ASSERT(inputGrid); + + PointDataTree& inputTree = inputGrid->tree(); + + std::vector offsets; + std::vector includeGroups; + std::vector excludeGroups; + + MultiGroupFilter filter(includeGroups, excludeGroups, inputTree.cbeginLeaf()->attributeSet()); + Index64 total = pointOffsets(offsets, inputTree, filter, /*inCoreOnly=*/true); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(0)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(0)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(0)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(0)); + CPPUNIT_ASSERT_EQUAL(total, Index64(0)); + + offsets.clear(); + + total = pointOffsets(offsets, inputTree, filter, /*inCoreOnly=*/false); + + CPPUNIT_ASSERT_EQUAL(offsets.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(offsets[0], Index64(1)); + CPPUNIT_ASSERT_EQUAL(offsets[1], Index64(3)); + CPPUNIT_ASSERT_EQUAL(offsets[2], Index64(4)); + CPPUNIT_ASSERT_EQUAL(offsets[3], Index64(5)); + CPPUNIT_ASSERT_EQUAL(total, Index64(5)); + } + std::remove(filename.c_str()); +} + + +namespace { + +// sum all voxel values +template +inline Index64 +voxelSum(const GridT& grid) +{ + Index64 total = 0; + for (auto iter = grid.cbeginValueOn(); iter; ++iter) { + total += static_cast(*iter); + } + return total; +} + +// Generate random points by uniformly distributing points on a unit-sphere. +inline void +genPoints(std::vector& positions, const int numPoints, const double scale) +{ + // init + math::Random01 randNumber(0); + const int n = int(std::sqrt(double(numPoints))); + const double xScale = (2.0 * M_PI) / double(n); + const double yScale = M_PI / double(n); + + double x, y, theta, phi; + Vec3R pos; + + positions.reserve(n*n); + + // loop over a [0 to n) x [0 to n) grid. + for (int a = 0; a < n; ++a) { + for (int b = 0; b < n; ++b) { + + // jitter, move to random pos. inside the current cell + x = double(a) + randNumber(); + y = double(b) + randNumber(); + + // remap to a lat/long map + theta = y * yScale; // [0 to PI] + phi = x * xScale; // [0 to 2PI] + + // convert to cartesian coordinates on a unit sphere. + // spherical coordinate triplet (r=1, theta, phi) + pos[0] = static_cast(std::sin(theta)*std::cos(phi)*scale); + pos[1] = static_cast(std::sin(theta)*std::sin(phi)*scale); + pos[2] = static_cast(std::cos(theta)*scale); + + positions.push_back(pos); + } + } +} + +} // namespace + + +void +TestPointCount::testCountGrid() +{ + using namespace openvdb::math; + + { // five points + std::vector positions{ {1, 1, 1}, + {1, 101, 1}, + {2, 101, 1}, + {101, 1, 1}, + {101, 101, 1}}; + + { // in five voxels + + math::Transform::Ptr transform(math::Transform::createLinearTransform(1.0f)); + PointDataGrid::Ptr points = createPointDataGrid(positions, *transform); + + // generate a count grid with the same transform + + Int32Grid::Ptr count = pointCountGrid(*points); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), pointCount(points->tree())); + } + + { // in four voxels + + math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f)); + PointDataGrid::Ptr points = createPointDataGrid(positions, *transform); + + // generate a count grid with the same transform + + Int32Grid::Ptr count = pointCountGrid(*points); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), pointCount(points->tree())); + } + + { // in one voxel + + math::Transform::Ptr transform(math::Transform::createLinearTransform(1000.0f)); + PointDataGrid::Ptr points = createPointDataGrid(positions, *transform); + + // generate a count grid with the same transform + + Int32Grid::Ptr count = pointCountGrid(*points); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), pointCount(points->tree())); + } + + { // in four voxels, Int64 grid + + math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f)); + PointDataGrid::Ptr points = createPointDataGrid(positions, *transform); + + // generate a count grid with the same transform + + Int64Grid::Ptr count = pointCountGrid(*points); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), pointCount(points->tree())); + } + + { // in four voxels, float grid + + math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f)); + PointDataGrid::Ptr points = createPointDataGrid(positions, *transform); + + // generate a count grid with the same transform + + FloatGrid::Ptr count = pointCountGrid(*points); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), pointCount(points->tree())); + } + + { // in four voxels + + math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f)); + const PointAttributeVector pointList(positions); + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + + auto& tree = points->tree(); + + // assign point 3 to new group "test" + + appendGroup(tree, "test"); + + std::vector groups{0,0,1,0,0}; + + setGroup(tree, pointIndexGrid->tree(), groups, "test"); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + // generate a count grid with the same transform + + MultiGroupFilter filter(includeGroups, excludeGroups, + tree.cbeginLeaf()->attributeSet()); + Int32Grid::Ptr count = pointCountGrid(*points, filter); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), Index64(1)); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), Index64(1)); + + MultiGroupFilter filter2(excludeGroups, includeGroups, + tree.cbeginLeaf()->attributeSet()); + count = pointCountGrid(*points, filter2); + + CPPUNIT_ASSERT_EQUAL(count->activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count), Index64(4)); + } + } + + { // 40,000 points on a unit sphere + std::vector positions; + const size_t total = 40000; + genPoints(positions, total, /*scale=*/100.0); + CPPUNIT_ASSERT_EQUAL(positions.size(), total); + + math::Transform::Ptr transform1(math::Transform::createLinearTransform(1.0f)); + math::Transform::Ptr transform5(math::Transform::createLinearTransform(5.0f)); + + PointDataGrid::Ptr points1 = + createPointDataGrid(positions, *transform1); + PointDataGrid::Ptr points5 = + createPointDataGrid(positions, *transform5); + + CPPUNIT_ASSERT(points1->activeVoxelCount() != points5->activeVoxelCount()); + CPPUNIT_ASSERT(points1->evalActiveVoxelBoundingBox() != points5->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(pointCount(points1->tree()), pointCount(points5->tree())); + + { // generate count grids with the same transform + + Int32Grid::Ptr count1 = pointCountGrid(*points1); + + CPPUNIT_ASSERT_EQUAL(count1->activeVoxelCount(), points1->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count1->evalActiveVoxelBoundingBox(), points1->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count1), pointCount(points1->tree())); + + Int32Grid::Ptr count5 = pointCountGrid(*points5); + + CPPUNIT_ASSERT_EQUAL(count5->activeVoxelCount(), points5->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count5->evalActiveVoxelBoundingBox(), points5->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count5), pointCount(points5->tree())); + } + + { // generate count grids with differing transforms + + Int32Grid::Ptr count1 = pointCountGrid(*points5, *transform1); + + CPPUNIT_ASSERT_EQUAL(count1->activeVoxelCount(), points1->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count1->evalActiveVoxelBoundingBox(), points1->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count1), pointCount(points5->tree())); + + Int32Grid::Ptr count5 = pointCountGrid(*points1, *transform5); + + CPPUNIT_ASSERT_EQUAL(count5->activeVoxelCount(), points5->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(count5->evalActiveVoxelBoundingBox(), points5->evalActiveVoxelBoundingBox()); + CPPUNIT_ASSERT_EQUAL(voxelSum(*count5), pointCount(points1->tree())); + } + } +} + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointCount); diff --git a/openvdb/unittest/TestPointDataLeaf.cc b/openvdb/unittest/TestPointDataLeaf.cc new file mode 100644 index 00000000..3214934b --- /dev/null +++ b/openvdb/unittest/TestPointDataLeaf.cc @@ -0,0 +1,1550 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + + +class TestPointDataLeaf: public CppUnit::TestCase +{ +public: + + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointDataLeaf); + CPPUNIT_TEST(testEmptyLeaf); + CPPUNIT_TEST(testOffsets); + CPPUNIT_TEST(testSetValue); + CPPUNIT_TEST(testMonotonicity); + CPPUNIT_TEST(testAttributes); + CPPUNIT_TEST(testTopologyCopy); + CPPUNIT_TEST(testEquivalence); + CPPUNIT_TEST(testIterators); + CPPUNIT_TEST(testReadWriteCompression); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testSwap); + CPPUNIT_TEST(testCopyOnWrite); + CPPUNIT_TEST(testCopyDescriptor); + CPPUNIT_TEST_SUITE_END(); + + void testEmptyLeaf(); + void testOffsets(); + void testSetValue(); + void testMonotonicity(); + void testAttributes(); + void testTopologyCopy(); + void testEquivalence(); + void testIterators(); + void testReadWriteCompression(); + void testIO(); + void testSwap(); + void testCopyOnWrite(); + void testCopyDescriptor(); + +private: + +}; // class TestPointDataLeaf + +using LeafType = PointDataTree::LeafNodeType; +using ValueType = LeafType::ValueType; +using BufferType = LeafType::Buffer; + +namespace { + +bool +matchingNamePairs(const openvdb::NamePair& lhs, + const openvdb::NamePair& rhs) +{ + if (lhs.first != rhs.first) return false; + if (lhs.second != rhs.second) return false; + + return true; +} + +bool +zeroLeafValues(const LeafType* leafNode) +{ + for (openvdb::Index i = 0; i < LeafType::SIZE; i++) { + if (leafNode->buffer().getValue(i) != LeafType::ValueType(0)) return false; + } + + return true; +} + +bool +noAttributeData(const LeafType* leafNode) +{ + const AttributeSet& attributeSet = leafNode->attributeSet(); + + return attributeSet.size() == 0 && attributeSet.descriptor().size() == 0; +} + +bool +monotonicOffsets(const LeafType& leafNode) +{ + int previous = -1; + + for (auto iter = leafNode.cbeginValueOn(); iter; ++iter) { + if (previous > int(*iter)) return false; + previous = int(*iter); + } + + return true; +} + +// (borrowed from PointIndexGrid unit test) + +class PointList +{ +public: + using PosType = openvdb::Vec3R; + using value_type = openvdb::Vec3R; + + PointList(const std::vector& points) + : mPoints(&points) + { + } + + size_t size() const { + return mPoints->size(); + } + + void getPos(size_t n, openvdb::Vec3R& xyz) const { + xyz = (*mPoints)[n]; + } + +protected: + std::vector const * const mPoints; +}; // PointList + +// Generate random points by uniformly distributing points +// on a unit-sphere. +// (borrowed from PointIndexGrid unit test) +std::vector genPoints(const int numPoints) +{ + // init + openvdb::math::Random01 randNumber(0); + const int n = int(std::sqrt(double(numPoints))); + const double xScale = (2.0 * M_PI) / double(n); + const double yScale = M_PI / double(n); + + double x, y, theta, phi; + + std::vector points; + points.reserve(n*n); + + // loop over a [0 to n) x [0 to n) grid. + for (int a = 0; a < n; ++a) { + for (int b = 0; b < n; ++b) { + + // jitter, move to random pos. inside the current cell + x = double(a) + randNumber(); + y = double(b) + randNumber(); + + // remap to a lat/long map + theta = y * yScale; // [0 to PI] + phi = x * xScale; // [0 to 2PI] + + // convert to cartesian coordinates on a unit sphere. + // spherical coordinate triplet (r=1, theta, phi) + points.emplace_back( std::sin(theta)*std::cos(phi), + std::sin(theta)*std::sin(phi), + std::cos(theta) ); + } + } + + return points; +} + +} // namespace + +void +TestPointDataLeaf::testEmptyLeaf() +{ + // empty leaf construction + + { + LeafType* leafNode = new LeafType(); + + CPPUNIT_ASSERT(leafNode); + CPPUNIT_ASSERT(leafNode->isEmpty()); + CPPUNIT_ASSERT(!leafNode->buffer().empty()); + CPPUNIT_ASSERT(zeroLeafValues(leafNode)); + CPPUNIT_ASSERT(noAttributeData(leafNode)); + CPPUNIT_ASSERT(leafNode->origin() == openvdb::Coord(0, 0, 0)); + + delete leafNode; + } + + // empty leaf with non-zero origin construction + + { + openvdb::Coord coord(20, 30, 40); + + LeafType* leafNode = new LeafType(coord); + + CPPUNIT_ASSERT(leafNode); + CPPUNIT_ASSERT(leafNode->isEmpty()); + CPPUNIT_ASSERT(!leafNode->buffer().empty()); + CPPUNIT_ASSERT(zeroLeafValues(leafNode)); + CPPUNIT_ASSERT(noAttributeData(leafNode)); + + CPPUNIT_ASSERT(leafNode->origin() == openvdb::Coord(16, 24, 40)); + + delete leafNode; + } +} + + +void +TestPointDataLeaf::testOffsets() +{ + // offsets for one point per voxel (active = true) + + { + LeafType* leafNode = new LeafType(); + + for (openvdb::Index i = 0; i < LeafType::SIZE; i++) { + leafNode->setOffsetOn(i, i); + } + + CPPUNIT_ASSERT(leafNode->getValue(10) == 10); + CPPUNIT_ASSERT(leafNode->isDense()); + + delete leafNode; + } + + // offsets for one point per voxel (active = false) + + { + LeafType* leafNode = new LeafType(); + + for (openvdb::Index i = 0; i < LeafType::SIZE; i++) { + leafNode->setOffsetOnly(i, i); + } + + CPPUNIT_ASSERT(leafNode->getValue(10) == 10); + CPPUNIT_ASSERT(leafNode->isEmpty()); + + delete leafNode; + } + + // test bulk offset replacement without activity mask update + + { + LeafType* leafNode = new LeafType(); + + for (openvdb::Index i = 0; i < LeafType::SIZE; ++i) { + leafNode->setOffsetOn(i, 10); + } + + std::vector newOffsets(LeafType::SIZE); + + leafNode->setOffsets(newOffsets, /*updateValueMask*/false); + + const LeafType::NodeMaskType& valueMask = leafNode->getValueMask(); + for (openvdb::Index i = 0; i < LeafType::SIZE; ++i ) { + CPPUNIT_ASSERT(valueMask.isOn(i)); + } + + delete leafNode; + } + + // test bulk offset replacement with activity mask update + + { + LeafType* leafNode = new LeafType(); + + for (openvdb::Index i = 0; i < LeafType::SIZE; ++i) { + leafNode->setOffsetOn(i, 10); + } + + std::vector newOffsets(LeafType::SIZE); + + leafNode->setOffsets(newOffsets, /*updateValueMask*/true); + + const LeafType::NodeMaskType& valueMask = leafNode->getValueMask(); + for (openvdb::Index i = 0; i < LeafType::SIZE; ++i ) { + CPPUNIT_ASSERT(valueMask.isOff(i)); + } + + delete leafNode; + } + + // ensure bulk offset replacement fails when vector size doesn't equal number of voxels + + { + LeafType* leafNode = new LeafType(); + + std::vector newOffsets; + CPPUNIT_ASSERT_THROW(leafNode->setOffsets(newOffsets), openvdb::ValueError); + + delete leafNode; + } + + // test offset validation + + { + using AttributeVec3s = TypedAttributeArray; + using AttributeS = TypedAttributeArray; + using Descriptor = AttributeSet::Descriptor; + + // empty Descriptor should throw on leaf node initialize + auto emptyDescriptor = std::make_shared(); + LeafType* emptyLeafNode = new LeafType(); + CPPUNIT_ASSERT_THROW(emptyLeafNode->initializeAttributes(emptyDescriptor, 5), + openvdb::IndexError); + + // create a non-empty Descriptor + Descriptor::Ptr descriptor = Descriptor::create(AttributeVec3s::attributeType()); + + // ensure validateOffsets succeeds for monotonically increasing offsets that fully + // utilise the underlying attribute arrays + + { + const size_t numAttributes = 1; + LeafType* leafNode = new LeafType(); + leafNode->initializeAttributes(descriptor, numAttributes); + + descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType()); + leafNode->appendAttribute(leafNode->attributeSet().descriptor(), + descriptor, descriptor->find("density")); + + std::vector offsets(LeafType::SIZE); + offsets.back() = numAttributes; + leafNode->setOffsets(offsets); + + CPPUNIT_ASSERT_NO_THROW(leafNode->validateOffsets()); + delete leafNode; + } + + // ensure validateOffsets detects non-monotonic offset values + + { + LeafType* leafNode = new LeafType(); + + std::vector offsets(LeafType::SIZE); + *offsets.begin() = 1; + leafNode->setOffsets(offsets); + + CPPUNIT_ASSERT_THROW(leafNode->validateOffsets(), openvdb::ValueError); + delete leafNode; + } + + // ensure validateOffsets detects inconsistent attribute array sizes + + { + descriptor = Descriptor::create(AttributeVec3s::attributeType()); + + const size_t numAttributes = 1; + LeafType* leafNode = new LeafType(); + leafNode->initializeAttributes(descriptor, numAttributes); + + descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType()); + leafNode->appendAttribute(leafNode->attributeSet().descriptor(), + descriptor, descriptor->find("density")); + + AttributeSet* newSet = new AttributeSet(leafNode->attributeSet(), numAttributes); + newSet->replace("density", AttributeS::create(numAttributes+1)); + leafNode->replaceAttributeSet(newSet); + + std::vector offsets(LeafType::SIZE); + offsets.back() = numAttributes; + leafNode->setOffsets(offsets); + + CPPUNIT_ASSERT_THROW(leafNode->validateOffsets(), openvdb::ValueError); + delete leafNode; + } + + // ensure validateOffsets detects unused attributes (e.g. final voxel offset not + // equal to size of attribute arrays) + + { + descriptor = Descriptor::create(AttributeVec3s::attributeType()); + + const size_t numAttributes = 1; + LeafType* leafNode = new LeafType(); + leafNode->initializeAttributes(descriptor, numAttributes); + + descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType()); + leafNode->appendAttribute(leafNode->attributeSet().descriptor(), + descriptor, descriptor->find("density")); + + std::vector offsets(LeafType::SIZE); + offsets.back() = numAttributes - 1; + leafNode->setOffsets(offsets); + + CPPUNIT_ASSERT_THROW(leafNode->validateOffsets(), openvdb::ValueError); + delete leafNode; + } + + // ensure validateOffsets detects out-of-bounds offset values + + { + descriptor = Descriptor::create(AttributeVec3s::attributeType()); + + const size_t numAttributes = 1; + LeafType* leafNode = new LeafType(); + leafNode->initializeAttributes(descriptor, numAttributes); + + descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType()); + leafNode->appendAttribute(leafNode->attributeSet().descriptor(), + descriptor, descriptor->find("density")); + + std::vector offsets(LeafType::SIZE); + offsets.back() = numAttributes + 1; + leafNode->setOffsets(offsets); + + CPPUNIT_ASSERT_THROW(leafNode->validateOffsets(), openvdb::ValueError); + delete leafNode; + } + } +} + + +void +TestPointDataLeaf::testSetValue() +{ + // the following tests are not run when in debug mode due to assertions firing +#ifdef NDEBUG + LeafType leaf(openvdb::Coord(0, 0, 0)); + + openvdb::Coord xyz(0, 0, 0); + openvdb::Index index(LeafType::coordToOffset(xyz)); + + // ensure all non-modifiable operations are no-ops + + leaf.setValueOnly(xyz, 10); + leaf.setValueOnly(index, 10); + leaf.setValueOff(xyz, 10); + leaf.setValueOff(index, 10); + leaf.setValueOn(xyz, 10); + leaf.setValueOn(index, 10); + + struct Local { static inline void op(unsigned int& n) { n = 10; } }; + + leaf.modifyValue(xyz, Local::op); + leaf.modifyValue(index, Local::op); + leaf.modifyValueAndActiveState(xyz, Local::op); + + CPPUNIT_ASSERT_EQUAL(0, int(leaf.getValue(xyz))); +#endif +} + + +void +TestPointDataLeaf::testMonotonicity() +{ + LeafType leaf(openvdb::Coord(0, 0, 0)); + + // assign aggregate values and activate all non-even coordinate sums + + unsigned sum = 0; + + for (unsigned int i = 0; i < LeafType::DIM; i++) { + for (unsigned int j = 0; j < LeafType::DIM; j++) { + for (unsigned int k = 0; k < LeafType::DIM; k++) { + if (((i + j + k) % 2) == 0) continue; + + leaf.setOffsetOn(LeafType::coordToOffset(openvdb::Coord(i, j, k)), sum++); + } + } + } + + CPPUNIT_ASSERT(monotonicOffsets(leaf)); + + // manually change a value and ensure offsets become non-monotonic + + leaf.setOffsetOn(500, 4); + + CPPUNIT_ASSERT(!monotonicOffsets(leaf)); +} + + +void +TestPointDataLeaf::testAttributes() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeI = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + LeafType leaf(openvdb::Coord(0, 0, 0)); + + CPPUNIT_ASSERT_EQUAL(leaf.attributeSet().size(), size_t(0)); + + leaf.initializeAttributes(descrA, /*arrayLength=*/100); + + descrA = descrA->duplicateAppend("id", AttributeI::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id")); + + CPPUNIT_ASSERT_EQUAL(leaf.attributeSet().size(), size_t(2)); + + { + const AttributeArray* array = leaf.attributeSet().get(/*pos=*/0); + + CPPUNIT_ASSERT_EQUAL(array->size(), Index(100)); + } + + // manually set a voxel + + leaf.setOffsetOn(LeafType::SIZE - 1, 10); + + CPPUNIT_ASSERT(!zeroLeafValues(&leaf)); + + // neither dense nor empty + + CPPUNIT_ASSERT(!leaf.isDense()); + CPPUNIT_ASSERT(!leaf.isEmpty()); + + // clear the attributes and check voxel values are zero but value mask is not touched + + leaf.clearAttributes(/*updateValueMask=*/ false); + + CPPUNIT_ASSERT(!leaf.isDense()); + CPPUNIT_ASSERT(!leaf.isEmpty()); + + CPPUNIT_ASSERT_EQUAL(leaf.attributeSet().size(), size_t(2)); + CPPUNIT_ASSERT(zeroLeafValues(&leaf)); + + // call clearAttributes again, updating the value mask and check it is now inactive + + leaf.clearAttributes(); + + CPPUNIT_ASSERT(leaf.isEmpty()); + + // ensure arrays are uniform + + const AttributeArray* array0 = leaf.attributeSet().get(/*pos=*/0); + const AttributeArray* array1 = leaf.attributeSet().get(/*pos=*/1); + + CPPUNIT_ASSERT_EQUAL(array0->size(), Index(1)); + CPPUNIT_ASSERT_EQUAL(array1->size(), Index(1)); + + // test leaf returns expected result for hasAttribute() + + CPPUNIT_ASSERT(leaf.hasAttribute(/*pos*/0)); + CPPUNIT_ASSERT(leaf.hasAttribute("P")); + + CPPUNIT_ASSERT(leaf.hasAttribute(/*pos*/1)); + CPPUNIT_ASSERT(leaf.hasAttribute("id")); + + CPPUNIT_ASSERT(!leaf.hasAttribute(/*pos*/2)); + CPPUNIT_ASSERT(!leaf.hasAttribute("test")); + + // test underlying attributeArray can be accessed by name and index, + // and that their types are as expected. + + const LeafType* constLeaf = &leaf; + + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray(/*pos*/0).type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray("P").type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray(/*pos*/1).type(), + AttributeI::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray("id").type(), + AttributeI::attributeType())); + + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray(/*pos*/0).type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray("P").type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray(/*pos*/1).type(), + AttributeI::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray("id").type(), + AttributeI::attributeType())); + + // check invalid pos or name throws + + CPPUNIT_ASSERT_THROW(leaf.attributeArray(/*pos=*/3), openvdb::LookupError); + CPPUNIT_ASSERT_THROW(leaf.attributeArray("not_there"), openvdb::LookupError); + + CPPUNIT_ASSERT_THROW(constLeaf->attributeArray(/*pos=*/3), openvdb::LookupError); + CPPUNIT_ASSERT_THROW(constLeaf->attributeArray("not_there"), openvdb::LookupError); + + // test leaf can be successfully cast to TypedAttributeArray and check types + + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray(/*pos=*/0).type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray("P").type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray(/*pos=*/1).type(), + AttributeI::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(leaf.attributeArray("id").type(), + AttributeI::attributeType())); + + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray(/*pos=*/0).type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray("P").type(), + AttributeVec3s::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray(/*pos=*/1).type(), + AttributeI::attributeType())); + CPPUNIT_ASSERT(matchingNamePairs(constLeaf->attributeArray("id").type(), + AttributeI::attributeType())); + + // check invalid pos or name throws + + CPPUNIT_ASSERT_THROW(leaf.attributeArray(/*pos=*/2), openvdb::LookupError); + CPPUNIT_ASSERT_THROW(leaf.attributeArray("test"), openvdb::LookupError); + + CPPUNIT_ASSERT_THROW(constLeaf->attributeArray(/*pos=*/2), openvdb::LookupError); + CPPUNIT_ASSERT_THROW(constLeaf->attributeArray("test"), openvdb::LookupError); + + // check memory usage = attribute set + base leaf + + // leaf.initializeAttributes(descrA, /*arrayLength=*/100); + + const LeafType::BaseLeaf& baseLeaf = static_cast(leaf); + + const Index64 memUsage = baseLeaf.memUsage() + leaf.attributeSet().memUsage(); + + CPPUNIT_ASSERT_EQUAL(memUsage, leaf.memUsage()); +} + + +void +TestPointDataLeaf::testTopologyCopy() +{ + // test topology copy from a float Leaf + + { + using FloatLeaf = openvdb::FloatTree::LeafNodeType; + + // create a float leaf and activate some values + + FloatLeaf floatLeaf(openvdb::Coord(0, 0, 0)); + + floatLeaf.setValueOn(1); + floatLeaf.setValueOn(4); + floatLeaf.setValueOn(7); + floatLeaf.setValueOn(8); + + CPPUNIT_ASSERT_EQUAL(floatLeaf.onVoxelCount(), Index64(4)); + + // validate construction of a PointDataLeaf using a TopologyCopy + + LeafType leaf(floatLeaf, 0, openvdb::TopologyCopy()); + + CPPUNIT_ASSERT_EQUAL(leaf.onVoxelCount(), Index64(4)); + + LeafType leaf2(openvdb::Coord(8, 8, 8)); + + leaf2.setValueOn(1); + leaf2.setValueOn(4); + leaf2.setValueOn(7); + + CPPUNIT_ASSERT(!leaf.hasSameTopology(&leaf2)); + + leaf2.setValueOn(8); + + CPPUNIT_ASSERT(leaf.hasSameTopology(&leaf2)); + + // validate construction of a PointDataLeaf using an Off-On TopologyCopy + + LeafType leaf3(floatLeaf, 1, 2, openvdb::TopologyCopy()); + + CPPUNIT_ASSERT_EQUAL(leaf3.onVoxelCount(), Index64(4)); + } + + // test topology copy from a PointIndexLeaf + + { + // generate points + // (borrowed from PointIndexGrid unit test) + + const float voxelSize = 0.01f; + const openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + std::vector points = genPoints(40000); + + PointList pointList(points); + + // construct point index grid + + using PointIndexGrid = openvdb::tools::PointIndexGrid; + + PointIndexGrid::Ptr pointGridPtr = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + auto iter = pointGridPtr->tree().cbeginLeaf(); + + CPPUNIT_ASSERT(iter); + + // check that the active voxel counts match for all leaves + + for ( ; iter; ++iter) { + LeafType leaf(*iter); + + CPPUNIT_ASSERT_EQUAL(iter->onVoxelCount(), leaf.onVoxelCount()); + } + } +} + + +void +TestPointDataLeaf::testEquivalence() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeF = TypedAttributeArray; + using AttributeI = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.initializeAttributes(descrA, /*arrayLength=*/100); + + descrA = descrA->duplicateAppend("density", AttributeF::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density")); + + descrA = descrA->duplicateAppend("id", AttributeI::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id")); + + // manually activate some voxels + + leaf.setValueOn(1); + leaf.setValueOn(4); + leaf.setValueOn(7); + + // manually change some values in the density array + + TypedAttributeArray& attr = + TypedAttributeArray::cast(leaf.attributeArray("density")); + + attr.set(0, 5.0f); + attr.set(50, 2.0f); + attr.set(51, 8.1f); + + // check deep copy construction (topology and attributes) + + { + LeafType leaf2(leaf); + + CPPUNIT_ASSERT_EQUAL(leaf.onVoxelCount(), leaf2.onVoxelCount()); + CPPUNIT_ASSERT(leaf.hasSameTopology(&leaf2)); + + CPPUNIT_ASSERT_EQUAL(leaf.attributeSet().size(), leaf2.attributeSet().size()); + CPPUNIT_ASSERT_EQUAL(leaf.attributeSet().get(0)->size(), + leaf2.attributeSet().get(0)->size()); + } + + // check equivalence + + { + LeafType leaf2(leaf); + + CPPUNIT_ASSERT(leaf == leaf2); + + leaf2.setOrigin(openvdb::Coord(0, 8, 0)); + + CPPUNIT_ASSERT(leaf != leaf2); + } + + { + LeafType leaf2(leaf); + + CPPUNIT_ASSERT(leaf == leaf2); + + leaf2.setValueOn(10); + + CPPUNIT_ASSERT(leaf != leaf2); + } +} + + +void +TestPointDataLeaf::testIterators() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeF = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + const size_t size = LeafType::NUM_VOXELS; + + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.initializeAttributes(descrA, /*arrayLength=*/size/2); + + descrA = descrA->duplicateAppend("density", AttributeF::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density")); + + { // uniform monotonic offsets, only even active + int offset = 0; + + for (Index i = 0; i < size; i++) + { + if ((i % 2) == 0) { + leaf.setOffsetOn(i, ++offset); + } + else { + leaf.setOffsetOnly(i, ++offset); + leaf.setValueOff(i); + } + } + } + + { // test index on + LeafType::IndexOnIter iterOn(leaf.beginIndexOn()); + CPPUNIT_ASSERT_EQUAL(iterCount(iterOn), Index64(size/2)); + for (int i = 0; iterOn; ++iterOn, i += 2) { + CPPUNIT_ASSERT_EQUAL(*iterOn, Index32(i)); + } + } + + { // test index off + LeafType::IndexOffIter iterOff(leaf.beginIndexOff()); + CPPUNIT_ASSERT_EQUAL(iterCount(iterOff), Index64(size/2)); + for (int i = 1; iterOff; ++iterOff, i += 2) { + CPPUNIT_ASSERT_EQUAL(*iterOff, Index32(i)); + } + } + + { // test index all + LeafType::IndexAllIter iterAll(leaf.beginIndexAll()); + CPPUNIT_ASSERT_EQUAL(iterCount(iterAll), Index64(size)); + for (int i = 0; iterAll; ++iterAll, ++i) { + CPPUNIT_ASSERT_EQUAL(*iterAll, Index32(i)); + } + } + +} + + +void +TestPointDataLeaf::testReadWriteCompression() +{ + using namespace openvdb; + + util::NodeMask<3> valueMask; + util::NodeMask<3> childMask; + + io::StreamMetadata::Ptr nullMetadata; + io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata); + + { // simple read/write test + std::stringstream ss; + + Index count = 8*8*8; + std::unique_ptr srcBuf(new PointDataIndex32[count]); + + for (Index i = 0; i < count; i++) srcBuf[i] = i; + + { + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + + std::unique_ptr destBuf(new PointDataIndex32[count]); + + io::readCompressedValues(ss, destBuf.get(), count, valueMask, false); + + for (Index i = 0; i < count; i++) { + CPPUNIT_ASSERT_EQUAL(srcBuf.get()[i], destBuf.get()[i]); + } + } + + const char* charBuffer = reinterpret_cast(srcBuf.get()); + size_t referenceBytes = + compression::bloscCompressedSize(charBuffer, count*sizeof(PointDataIndex32)); + + { + ss.str(""); + + io::setStreamMetadataPtr(ss, streamMetadata); + + io::writeCompressedValuesSize(ss, srcBuf.get(), count); + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + int magic = 1924674; + ss.write(reinterpret_cast(&magic), sizeof(int)); + + std::unique_ptr destBuf(new PointDataIndex32[count]); + + uint16_t size; + ss.read(reinterpret_cast(&size), sizeof(uint16_t)); + if (size == std::numeric_limits::max()) size = 0; + + CPPUNIT_ASSERT_EQUAL(size_t(size), referenceBytes); + + io::readCompressedValues(ss, destBuf.get(), count, valueMask, false); + + int magic2; + ss.read(reinterpret_cast(&magic2), sizeof(int)); + + CPPUNIT_ASSERT_EQUAL(magic, magic2); + + for (Index i = 0; i < count; i++) { + CPPUNIT_ASSERT_EQUAL(srcBuf.get()[i], destBuf.get()[i]); + } + + io::setStreamMetadataPtr(ss, nullMetadata); + } + + { // repeat but using nullptr for destination to force seek behaviour + ss.str(""); + + io::setStreamMetadataPtr(ss, streamMetadata); + + io::writeCompressedValuesSize(ss, srcBuf.get(), count); + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + int magic = 3829250; + ss.write(reinterpret_cast(&magic), sizeof(int)); + + uint16_t size; + ss.read(reinterpret_cast(&size), sizeof(uint16_t)); + uint16_t actualSize(size); + if (size == std::numeric_limits::max()) actualSize = 0; + + CPPUNIT_ASSERT_EQUAL(size_t(actualSize), referenceBytes); + + streamMetadata->setPass(size); + + PointDataIndex32* forceSeek = nullptr; + io::readCompressedValues(ss, forceSeek, count, valueMask, false); + + int magic2; + ss.read(reinterpret_cast(&magic2), sizeof(int)); + + CPPUNIT_ASSERT_EQUAL(magic, magic2); + + io::setStreamMetadataPtr(ss, nullMetadata); + } + +#ifndef OPENVDB_USE_BLOSC + { // write to indicate Blosc compression + std::stringstream ssInvalid; + + uint16_t bytes16(100); // clamp to 16-bit unsigned integer + ssInvalid.write(reinterpret_cast(&bytes16), sizeof(uint16_t)); + + std::unique_ptr destBuf(new PointDataIndex32[count]); + CPPUNIT_ASSERT_THROW(io::readCompressedValues(ssInvalid, destBuf.get(), + count, valueMask, false), RuntimeError); + } +#endif + +#ifdef OPENVDB_USE_BLOSC + { // mis-matching destination bytes cause decompression failures + std::unique_ptr destBuf(new PointDataIndex32[count]); + + ss.str(""); + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + CPPUNIT_ASSERT_THROW(io::readCompressedValues(ss, destBuf.get(), + count+1, valueMask, false), RuntimeError); + + ss.str(""); + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + CPPUNIT_ASSERT_THROW(io::readCompressedValues(ss, destBuf.get(), + 1, valueMask, false), RuntimeError); + } +#endif + + { // seek + ss.str(""); + + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + + int test(10772832); + ss.write(reinterpret_cast(&test), sizeof(int)); + + PointDataIndex32* buf = nullptr; + + io::readCompressedValues(ss, buf, count, valueMask, false); + int test2; + ss.read(reinterpret_cast(&test2), sizeof(int)); + + CPPUNIT_ASSERT_EQUAL(test, test2); + } + } + + { // two values for non-compressible example + std::stringstream ss; + + Index count = 2; + std::unique_ptr srcBuf(new PointDataIndex32[count]); + + for (Index i = 0; i < count; i++) srcBuf[i] = i; + + io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false); + + std::unique_ptr destBuf(new PointDataIndex32[count]); + + io::readCompressedValues(ss, destBuf.get(), count, valueMask, false); + + for (Index i = 0; i < count; i++) { + CPPUNIT_ASSERT_EQUAL(srcBuf.get()[i], destBuf.get()[i]); + } + } + + { // throw at limit of 16-bit + std::stringstream ss; + PointDataIndex32* buf = nullptr; + Index count = std::numeric_limits::max(); + + CPPUNIT_ASSERT_THROW(io::writeCompressedValues(ss, buf, count, valueMask, childMask, false), + IoError); + CPPUNIT_ASSERT_THROW(io::readCompressedValues(ss, buf, count, valueMask, false), IoError); + } +} + + +void +TestPointDataLeaf::testIO() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeF = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + const size_t size = LeafType::NUM_VOXELS; + + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.initializeAttributes(descrA, /*arrayLength=*/size/2); + + descrA = descrA->duplicateAppend("density", AttributeF::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density")); + + // manually activate some voxels + + leaf.setOffsetOn(1, 10); + leaf.setOffsetOn(4, 20); + leaf.setOffsetOn(7, 5); + + // manually change some values in the density array + + TypedAttributeArray& attr = + TypedAttributeArray::cast(leaf.attributeArray("density")); + + attr.set(0, 5.0f); + attr.set(50, 2.0f); + attr.set(51, 8.1f); + + // read and write topology to disk + + { + LeafType leaf2(openvdb::Coord(0, 0, 0)); + + std::ostringstream ostr(std::ios_base::binary); + leaf.writeTopology(ostr); + + std::istringstream istr(ostr.str(), std::ios_base::binary); + leaf2.readTopology(istr); + + // check topology matches + + CPPUNIT_ASSERT_EQUAL(leaf.onVoxelCount(), leaf2.onVoxelCount()); + CPPUNIT_ASSERT(leaf2.isValueOn(4)); + CPPUNIT_ASSERT(!leaf2.isValueOn(5)); + + // check only topology (values and attributes still empty) + + CPPUNIT_ASSERT_EQUAL(leaf2.getValue(4), ValueType(0)); + CPPUNIT_ASSERT_EQUAL(leaf2.attributeSet().size(), size_t(0)); + } + + // read and write buffers to disk + + { + LeafType leaf2(openvdb::Coord(0, 0, 0)); + + io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata); + + std::ostringstream ostr(std::ios_base::binary); + io::setStreamMetadataPtr(ostr, streamMetadata); + io::setDataCompression(ostr, io::COMPRESS_BLOSC); + leaf.writeTopology(ostr); + for (Index b = 0; b < leaf.buffers(); b++) { + uint32_t pass = (uint32_t(leaf.buffers()) << 16) | uint32_t(b); + streamMetadata->setPass(pass); + leaf.writeBuffers(ostr); + } + { // error checking + streamMetadata->setPass(1000); + leaf.writeBuffers(ostr); + + io::StreamMetadata::Ptr meta; + io::setStreamMetadataPtr(ostr, meta); + CPPUNIT_ASSERT_THROW(leaf.writeBuffers(ostr), openvdb::IoError); + } + + std::istringstream istr(ostr.str(), std::ios_base::binary); + io::setStreamMetadataPtr(istr, streamMetadata); + io::setDataCompression(istr, io::COMPRESS_BLOSC); + + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + io::setCurrentVersion(istr); + + leaf2.readTopology(istr); + for (Index b = 0; b < leaf.buffers(); b++) { + uint32_t pass = (uint32_t(leaf.buffers()) << 16) | uint32_t(b); + streamMetadata->setPass(pass); + leaf2.readBuffers(istr); + } + + // check topology matches + + CPPUNIT_ASSERT_EQUAL(leaf.onVoxelCount(), leaf2.onVoxelCount()); + CPPUNIT_ASSERT(leaf2.isValueOn(4)); + CPPUNIT_ASSERT(!leaf2.isValueOn(5)); + + // check only topology (values and attributes still empty) + + CPPUNIT_ASSERT_EQUAL(leaf2.getValue(4), ValueType(20)); + CPPUNIT_ASSERT_EQUAL(leaf2.attributeSet().size(), size_t(2)); + } + + { // test multi-buffer IO + // create a new grid with a single origin leaf + + PointDataGrid::Ptr grid = PointDataGrid::create(); + grid->setName("points"); + grid->tree().addLeaf(new LeafType(leaf)); + + openvdb::GridCPtrVec grids; + grids.push_back(grid); + + // write to file + + { + io::File file("leaf.vdb"); + file.write(grids); + file.close(); + } + + { // read grids from file (using delayed loading) + PointDataGrid::Ptr gridFromDisk; + + { + io::File file("leaf.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("points"); + file.close(); + + gridFromDisk = openvdb::gridPtrCast(baseGrid); + } + + LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(leafFromDisk); + + CPPUNIT_ASSERT(leaf == *leafFromDisk); + } + + { // read grids from file and pre-fetch + PointDataGrid::Ptr gridFromDisk; + + { + io::File file("leaf.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("points"); + file.close(); + + gridFromDisk = openvdb::gridPtrCast(baseGrid); + } + + LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(leafFromDisk); + + const AttributeVec3s& position( + AttributeVec3s::cast(leafFromDisk->constAttributeArray("P"))); + const AttributeF& density( + AttributeF::cast(leafFromDisk->constAttributeArray("density"))); + + CPPUNIT_ASSERT(leafFromDisk->buffer().isOutOfCore()); +#if OPENVDB_USE_BLOSC + CPPUNIT_ASSERT(position.isOutOfCore()); + CPPUNIT_ASSERT(density.isOutOfCore()); +#else + // delayed-loading is only available on attribute arrays when using Blosc + CPPUNIT_ASSERT(!position.isOutOfCore()); + CPPUNIT_ASSERT(!density.isOutOfCore()); +#endif + + // prefetch voxel data only + prefetch(gridFromDisk->tree(), /*position=*/false, /*attributes=*/false); + + // ensure out-of-core data is now in-core after pre-fetching + + CPPUNIT_ASSERT(!leafFromDisk->buffer().isOutOfCore()); +#if OPENVDB_USE_BLOSC + CPPUNIT_ASSERT(position.isOutOfCore()); + CPPUNIT_ASSERT(density.isOutOfCore()); +#else + CPPUNIT_ASSERT(!position.isOutOfCore()); + CPPUNIT_ASSERT(!density.isOutOfCore()); +#endif + + { // re-open + io::File file("leaf.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("points"); + file.close(); + + gridFromDisk = openvdb::gridPtrCast(baseGrid); + } + + leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(leafFromDisk); + + const AttributeVec3s& position2( + AttributeVec3s::cast(leafFromDisk->constAttributeArray("P"))); + const AttributeF& density2( + AttributeF::cast(leafFromDisk->constAttributeArray("density"))); + + // prefetch voxel and position attribute data + prefetch(gridFromDisk->tree(), /*position=*/true, /*attribute=*/false); + + // ensure out-of-core voxel and position data is now in-core after pre-fetching + + CPPUNIT_ASSERT(!leafFromDisk->buffer().isOutOfCore()); + CPPUNIT_ASSERT(!position2.isOutOfCore()); +#if OPENVDB_USE_BLOSC + CPPUNIT_ASSERT(density2.isOutOfCore()); +#else + CPPUNIT_ASSERT(!density2.isOutOfCore()); +#endif + + { // re-open + io::File file("leaf.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("points"); + file.close(); + + gridFromDisk = openvdb::gridPtrCast(baseGrid); + } + + leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(leafFromDisk); + + const AttributeVec3s& position3( + AttributeVec3s::cast(leafFromDisk->constAttributeArray("P"))); + const AttributeF& density3( + AttributeF::cast(leafFromDisk->constAttributeArray("density"))); + + // prefetch all data + prefetch(gridFromDisk->tree()); + + // ensure out-of-core voxel and position data is now in-core after pre-fetching + + CPPUNIT_ASSERT(!leafFromDisk->buffer().isOutOfCore()); + CPPUNIT_ASSERT(!position3.isOutOfCore()); + CPPUNIT_ASSERT(!density3.isOutOfCore()); + } + + remove("leaf.vdb"); + } + + { // test multi-buffer IO with varying attribute storage per-leaf + // create a new grid with three leaf nodes + + PointDataGrid::Ptr grid = PointDataGrid::create(); + grid->setName("points"); + + Descriptor::Ptr descrB = Descriptor::create(AttributeVec3s::attributeType()); + + // create leaf nodes and initialize attributes using this descriptor + + LeafType leaf0(openvdb::Coord(0, 0, 0)); + LeafType leaf1(openvdb::Coord(0, 8, 0)); + LeafType leaf2(openvdb::Coord(0, 0, 8)); + + leaf0.initializeAttributes(descrB, /*arrayLength=*/2); + leaf1.initializeAttributes(descrB, /*arrayLength=*/2); + leaf2.initializeAttributes(descrB, /*arrayLength=*/2); + + descrB = descrB->duplicateAppend("density", AttributeF::attributeType()); + size_t index = descrB->find("density"); + + // append density attribute to leaf 0 and leaf 2 (not leaf 1) + + leaf0.appendAttribute(leaf0.attributeSet().descriptor(), descrB, index); + leaf2.appendAttribute(leaf2.attributeSet().descriptor(), descrB, index); + + // manually change some values in the density array for leaf 0 and leaf 2 + + TypedAttributeArray& attr0 = + TypedAttributeArray::cast(leaf0.attributeArray("density")); + + attr0.set(0, 2.0f); + attr0.set(1, 2.0f); + + attr0.compact(); + + // compact only the attribute array in the second leaf + + TypedAttributeArray& attr2 = + TypedAttributeArray::cast(leaf2.attributeArray("density")); + + attr2.set(0, 5.0f); + attr2.set(1, 5.0f); + + attr2.compact(); + + CPPUNIT_ASSERT(attr0.isUniform()); + CPPUNIT_ASSERT(attr2.isUniform()); + + grid->tree().addLeaf(new LeafType(leaf0)); + grid->tree().addLeaf(new LeafType(leaf1)); + grid->tree().addLeaf(new LeafType(leaf2)); + + openvdb::GridCPtrVec grids; + grids.push_back(grid); + + { // write to file + io::File file("leaf.vdb"); + file.write(grids); + file.close(); + } + + { // read grids from file (using delayed loading) + PointDataGrid::Ptr gridFromDisk; + + { + io::File file("leaf.vdb"); + file.open(); + openvdb::GridBase::Ptr baseGrid = file.readGrid("points"); + file.close(); + + gridFromDisk = openvdb::gridPtrCast(baseGrid); + } + + LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(leafFromDisk); + CPPUNIT_ASSERT(leaf0 == *leafFromDisk); + + leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 8, 0)); + CPPUNIT_ASSERT(leafFromDisk); + CPPUNIT_ASSERT(leaf1 == *leafFromDisk); + + leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 8)); + CPPUNIT_ASSERT(leafFromDisk); + CPPUNIT_ASSERT(leaf2 == *leafFromDisk); + } + + remove("leaf.vdb"); + } +} + + +void +TestPointDataLeaf::testSwap() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeF = TypedAttributeArray; + using AttributeI = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + const Index initialArrayLength = 100; + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.initializeAttributes(descrA, /*arrayLength=*/initialArrayLength); + + descrA = descrA->duplicateAppend("density", AttributeF::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density")); + + descrA = descrA->duplicateAppend("id", AttributeI::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id")); + + // swap out the underlying attribute set with a new attribute set with a matching + // descriptor + + CPPUNIT_ASSERT_EQUAL(initialArrayLength, leaf.attributeSet().get("density")->size()); + CPPUNIT_ASSERT_EQUAL(initialArrayLength, leaf.attributeSet().get("id")->size()); + + descrA = Descriptor::create(AttributeVec3s::attributeType()); + + const Index newArrayLength = initialArrayLength / 2; + + AttributeSet* newAttributeSet(new AttributeSet(descrA, /*arrayLength*/newArrayLength)); + + newAttributeSet->appendAttribute("density", AttributeF::attributeType()); + newAttributeSet->appendAttribute("id", AttributeI::attributeType()); + + leaf.replaceAttributeSet(newAttributeSet); + + CPPUNIT_ASSERT_EQUAL(newArrayLength, leaf.attributeSet().get("density")->size()); + CPPUNIT_ASSERT_EQUAL(newArrayLength, leaf.attributeSet().get("id")->size()); + + // ensure we refuse to swap when the attribute set is null + + CPPUNIT_ASSERT_THROW(leaf.replaceAttributeSet(nullptr), openvdb::ValueError); + + // ensure we refuse to swap when the descriptors do not match, + // unless we explicitly allow a mismatch. + + Descriptor::Ptr descrB = Descriptor::create(AttributeVec3s::attributeType()); + AttributeSet* attributeSet = new AttributeSet(descrB, newArrayLength); + + attributeSet->appendAttribute("extra", AttributeF::attributeType()); + + CPPUNIT_ASSERT_THROW(leaf.replaceAttributeSet(attributeSet), openvdb::ValueError); + + leaf.replaceAttributeSet(attributeSet, true); + CPPUNIT_ASSERT_EQUAL(const_cast(&leaf.attributeSet()), attributeSet); +} + +void +TestPointDataLeaf::testCopyOnWrite() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeF = TypedAttributeArray; + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // create a leaf and initialize attributes using this descriptor + + const Index initialArrayLength = 100; + LeafType leaf(openvdb::Coord(0, 0, 0)); + leaf.initializeAttributes(descrA, /*arrayLength=*/initialArrayLength); + + descrA = descrA->duplicateAppend("density", AttributeF::attributeType()); + leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density")); + + const AttributeSet& attributeSet = leaf.attributeSet(); + + CPPUNIT_ASSERT_EQUAL(attributeSet.size(), size_t(2)); + + // ensure attribute arrays are shared between leaf nodes until write + + const LeafType leafCopy(leaf); + + const AttributeSet& attributeSetCopy = leafCopy.attributeSet(); + + CPPUNIT_ASSERT(attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(attributeSetCopy.isShared(/*pos=*/1)); + + // test that from a const leaf, accesses to the attribute arrays do not + // make then unique + + const AttributeArray* constArray = attributeSetCopy.getConst(/*pos=*/1); + CPPUNIT_ASSERT(constArray); + + CPPUNIT_ASSERT(attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(attributeSetCopy.isShared(/*pos=*/1)); + + constArray = attributeSetCopy.get(/*pos=*/1); + + CPPUNIT_ASSERT(attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(attributeSetCopy.isShared(/*pos=*/1)); + + constArray = &(leafCopy.attributeArray(/*pos=*/1)); + + CPPUNIT_ASSERT(attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(attributeSetCopy.isShared(/*pos=*/1)); + + constArray = &(leafCopy.attributeArray("density")); + + CPPUNIT_ASSERT(attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(attributeSetCopy.isShared(/*pos=*/1)); + + // test makeUnique is called from non const getters + + AttributeArray* attributeArray = &(leaf.attributeArray(/*pos=*/1)); + CPPUNIT_ASSERT(attributeArray); + + CPPUNIT_ASSERT(!attributeSet.isShared(/*pos=*/1)); + CPPUNIT_ASSERT(!attributeSetCopy.isShared(/*pos=*/1)); +} + + +void +TestPointDataLeaf::testCopyDescriptor() +{ + using AttributeVec3s = TypedAttributeArray; + using AttributeS = TypedAttributeArray; + + using LeafNode = PointDataTree::LeafNodeType; + + PointDataTree tree; + + LeafNode* leaf = tree.touchLeaf(openvdb::Coord(0, 0, 0)); + LeafNode* leaf2 = tree.touchLeaf(openvdb::Coord(0, 8, 0)); + + // create a descriptor + + using Descriptor = AttributeSet::Descriptor; + + Descriptor::Inserter names; + names.add("density", AttributeS::attributeType()); + + Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType()); + + // initialize attributes using this descriptor + + leaf->initializeAttributes(descrA, /*arrayLength=*/100); + leaf2->initializeAttributes(descrA, /*arrayLength=*/50); + + // copy the PointDataTree and ensure that descriptors are shared + + PointDataTree tree2(tree); + + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), openvdb::Index32(2)); + + descrA->setGroup("test", size_t(1)); + + PointDataTree::LeafCIter iter2 = tree2.cbeginLeaf(); + CPPUNIT_ASSERT(iter2->attributeSet().descriptor().hasGroup("test")); + ++iter2; + CPPUNIT_ASSERT(iter2->attributeSet().descriptor().hasGroup("test")); + + // call makeDescriptorUnique and ensure that descriptors are no longer shared + + Descriptor::Ptr newDescriptor = makeDescriptorUnique(tree2); + CPPUNIT_ASSERT(newDescriptor); + + descrA->setGroup("test2", size_t(2)); + + iter2 = tree2.cbeginLeaf(); + CPPUNIT_ASSERT(!iter2->attributeSet().descriptor().hasGroup("test2")); + ++iter2; + CPPUNIT_ASSERT(!iter2->attributeSet().descriptor().hasGroup("test2")); +} + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointDataLeaf); diff --git a/openvdb/unittest/TestPointDelete.cc b/openvdb/unittest/TestPointDelete.cc new file mode 100644 index 00000000..551d8cdb --- /dev/null +++ b/openvdb/unittest/TestPointDelete.cc @@ -0,0 +1,249 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include + +#ifdef _MSC_VER +#include +#endif + +using namespace openvdb::points; + +class TestPointDelete: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointDelete); + CPPUNIT_TEST(testDeleteFromGroups); + + CPPUNIT_TEST_SUITE_END(); + + void testDeleteFromGroups(); +}; // class TestPointDelete + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointDelete); + +//////////////////////////////////////// + +void +TestPointDelete::testDeleteFromGroups() +{ + using openvdb::math::Vec3s; + using openvdb::tools::PointIndexGrid; + using openvdb::Index64; + + const float voxelSize(1.0); + openvdb::math::Transform::Ptr transform(openvdb::math::Transform::createLinearTransform(voxelSize)); + + const std::vector positions6Points = { + {1, 1, 1}, + {1, 2, 1}, + {2, 1, 1}, + {2, 2, 1}, + {100, 100, 100}, + {100, 101, 100} + }; + const PointAttributeVector pointList6Points(positions6Points); + + { + // delete from a tree with 2 leaves, checking that group membership is updated as + // expected + + PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList6Points, *transform); + + PointDataGrid::Ptr grid = + createPointDataGrid(*pointIndexGrid, pointList6Points, + *transform); + PointDataTree& tree = grid->tree(); + + // first test will delete 3 groups, with the third one empty. + + appendGroup(tree, "test1"); + appendGroup(tree, "test2"); + appendGroup(tree, "test3"); + appendGroup(tree, "test4"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + + std::vector membership1{1, 0, 0, 0, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership1, "test1"); + + std::vector membership2{0, 0, 1, 1, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership2, "test2"); + + std::vector groupsToDelete{"test1", "test2", "test3"}; + + deleteFromGroups(tree, groupsToDelete); + + // 4 points should have been deleted, so only 2 remain + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(2)); + + // check that first three groups are deleted but the last is not + + const PointDataTree::LeafCIter leafIterAfterDeletion = tree.cbeginLeaf(); + + AttributeSet attributeSetAfterDeletion = leafIterAfterDeletion->attributeSet(); + AttributeSet::Descriptor& descriptor = attributeSetAfterDeletion.descriptor(); + + CPPUNIT_ASSERT(!descriptor.hasGroup("test1")); + CPPUNIT_ASSERT(!descriptor.hasGroup("test2")); + CPPUNIT_ASSERT(!descriptor.hasGroup("test3")); + CPPUNIT_ASSERT(descriptor.hasGroup("test4")); + } + + { + // check deletion from a single leaf tree and that attribute values are preserved + // correctly after deletion + + std::vector positions4Points = { + {1, 1, 1}, + {1, 2, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + const PointAttributeVector pointList4Points(positions4Points); + + PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList4Points, *transform); + + PointDataGrid::Ptr grid = + createPointDataGrid(*pointIndexGrid, + pointList4Points, *transform); + PointDataTree& tree = grid->tree(); + + appendGroup(tree, "test"); + appendAttribute(tree, "testAttribute", TypedAttributeArray::attributeType()); + + CPPUNIT_ASSERT(tree.beginLeaf()); + + const PointDataTree::LeafIter leafIter = tree.beginLeaf(); + + AttributeWriteHandle + testAttributeWriteHandle(leafIter->attributeArray("testAttribute")); + + for(int i = 0; i < 4; i++) { + testAttributeWriteHandle.set(i,i+1); + } + + std::vector membership{0, 1, 1, 0}; + setGroup(tree, pointIndexGrid->tree(), membership, "test"); + + deleteFromGroup(tree, "test"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(2)); + + const PointDataTree::LeafCIter leafIterAfterDeletion = tree.cbeginLeaf(); + const AttributeSet attributeSetAfterDeletion = leafIterAfterDeletion->attributeSet(); + const AttributeSet::Descriptor& descriptor = attributeSetAfterDeletion.descriptor(); + + CPPUNIT_ASSERT(descriptor.find("testAttribute") != AttributeSet::INVALID_POS); + + AttributeHandle testAttributeHandle(*attributeSetAfterDeletion.get("testAttribute")); + + CPPUNIT_ASSERT_EQUAL(1, testAttributeHandle.get(0)); + CPPUNIT_ASSERT_EQUAL(4, testAttributeHandle.get(1)); + } + + { + // test the invert flag using data similar to that used in the first test + + PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList6Points, *transform); + PointDataGrid::Ptr grid = + createPointDataGrid(*pointIndexGrid, pointList6Points, + *transform); + PointDataTree& tree = grid->tree(); + + appendGroup(tree, "test1"); + appendGroup(tree, "test2"); + appendGroup(tree, "test3"); + appendGroup(tree, "test4"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + + std::vector membership1{1, 0, 1, 1, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership1, "test1"); + + std::vector membership2{0, 0, 1, 1, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership2, "test2"); + + std::vector groupsToDelete{"test1", "test3"}; + + deleteFromGroups(tree, groupsToDelete, /*invert=*/ true); + + const PointDataTree::LeafCIter leafIterAfterDeletion = tree.cbeginLeaf(); + const AttributeSet attributeSetAfterDeletion = leafIterAfterDeletion->attributeSet(); + const AttributeSet::Descriptor& descriptor = attributeSetAfterDeletion.descriptor(); + + // no groups should be dropped when invert = true + CPPUNIT_ASSERT_EQUAL(static_cast(descriptor.groupMap().size()), + static_cast(4)); + + // 4 points should remain since test1 and test3 have 4 members between then + CPPUNIT_ASSERT_EQUAL(static_cast(pointCount(tree)), + static_cast(4)); + } + + { + // similar to first test, but don't drop groups + + PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList6Points, *transform); + + PointDataGrid::Ptr grid = + createPointDataGrid(*pointIndexGrid, pointList6Points, + *transform); + PointDataTree& tree = grid->tree(); + + // first test will delete 3 groups, with the third one empty. + + appendGroup(tree, "test1"); + appendGroup(tree, "test2"); + appendGroup(tree, "test3"); + appendGroup(tree, "test4"); + + std::vector membership1{1, 0, 0, 0, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership1, "test1"); + + std::vector membership2{0, 0, 1, 1, 0, 1}; + + setGroup(tree, pointIndexGrid->tree(), membership2, "test2"); + + std::vector groupsToDelete{"test1", "test2", "test3"}; + + deleteFromGroups(tree, groupsToDelete, /*invert=*/ false, /*drop=*/ false); + + // 4 points should have been deleted, so only 2 remain + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(2)); + + // check that first three groups are deleted but the last is not + + const PointDataTree::LeafCIter leafIterAfterDeletion = tree.cbeginLeaf(); + + AttributeSet attributeSetAfterDeletion = leafIterAfterDeletion->attributeSet(); + AttributeSet::Descriptor& descriptor = attributeSetAfterDeletion.descriptor(); + + // all group should still be present + + CPPUNIT_ASSERT(descriptor.hasGroup("test1")); + CPPUNIT_ASSERT(descriptor.hasGroup("test2")); + CPPUNIT_ASSERT(descriptor.hasGroup("test3")); + CPPUNIT_ASSERT(descriptor.hasGroup("test4")); + } + +} diff --git a/openvdb/unittest/TestPointGroup.cc b/openvdb/unittest/TestPointGroup.cc new file mode 100644 index 00000000..e76c86cc --- /dev/null +++ b/openvdb/unittest/TestPointGroup.cc @@ -0,0 +1,699 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + +#include // for std::remove() +#include // for std::getenv() +#include +#include +#include +#include + +#ifdef _MSC_VER +#include +#endif + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointGroup: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointGroup); + CPPUNIT_TEST(testDescriptor); + CPPUNIT_TEST(testAppendDrop); + CPPUNIT_TEST(testCompact); + CPPUNIT_TEST(testSet); + CPPUNIT_TEST(testFilter); + + CPPUNIT_TEST_SUITE_END(); + + void testDescriptor(); + void testAppendDrop(); + void testCompact(); + void testSet(); + void testFilter(); +}; // class TestPointGroup + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointGroup); + +//////////////////////////////////////// + + +class FirstFilter +{ +public: + static bool initialized() { return true; } + + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template void reset(const LeafT&) { } + + template bool valid(const IterT& iter) const + { + return *iter == 0; + } +}; // class FirstFilter + + +//////////////////////////////////////// + + +namespace { + + bool testStringVector(std::vector& input) + { + return input.size() == 0; + } + + bool testStringVector(std::vector& input, const Name& name1) + { + if (input.size() != 1) return false; + if (input[0] != name1) return false; + return true; + } + + bool testStringVector(std::vector& input, const Name& name1, const Name& name2) + { + if (input.size() != 2) return false; + if (input[0] != name1) return false; + if (input[1] != name2) return false; + return true; + } + +} // namespace + + +void +TestPointGroup::testDescriptor() +{ + // test missing groups deletion + + { // no groups, empty Descriptor + std::vector groups; + AttributeSet::Descriptor descriptor; + deleteMissingPointGroups(groups, descriptor); + CPPUNIT_ASSERT(testStringVector(groups)); + } + + { // one group, empty Descriptor + std::vector groups{"group1"}; + AttributeSet::Descriptor descriptor; + deleteMissingPointGroups(groups, descriptor); + CPPUNIT_ASSERT(testStringVector(groups)); + } + + { // one group, Descriptor with same group + std::vector groups{"group1"}; + AttributeSet::Descriptor descriptor; + descriptor.setGroup("group1", 0); + deleteMissingPointGroups(groups, descriptor); + CPPUNIT_ASSERT(testStringVector(groups, "group1")); + } + + { // one group, Descriptor with different group + std::vector groups{"group1"}; + AttributeSet::Descriptor descriptor; + descriptor.setGroup("group2", 0); + deleteMissingPointGroups(groups, descriptor); + CPPUNIT_ASSERT(testStringVector(groups)); + } + + { // three groups, Descriptor with three groups, one different + std::vector groups{"group1", "group3", "group4"}; + AttributeSet::Descriptor descriptor; + descriptor.setGroup("group1", 0); + descriptor.setGroup("group2", 0); + descriptor.setGroup("group4", 0); + deleteMissingPointGroups(groups, descriptor); + CPPUNIT_ASSERT(testStringVector(groups, "group1", "group4")); + } +} + + +//////////////////////////////////////// + + +void +TestPointGroup::testAppendDrop() +{ + std::vector positions{{1, 1, 1}, {1, 10, 1}, {10, 1, 1}, {10, 10, 1}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check one leaf per point + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(4)); + + // retrieve first and last leaf attribute sets + + PointDataTree::LeafCIter leafIter = tree.cbeginLeaf(); + const AttributeSet& attributeSet = leafIter->attributeSet(); + + ++leafIter; + ++leafIter; + ++leafIter; + + const AttributeSet& attributeSet4 = leafIter->attributeSet(); + + { // throw on append or drop an empty group + CPPUNIT_ASSERT_THROW(appendGroup(tree, ""), openvdb::KeyError); + CPPUNIT_ASSERT_THROW(dropGroup(tree, ""), openvdb::KeyError); + } + + { // append a group + appendGroup(tree, "test"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(1)); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test")); + } + + { // append a group with non-unique name (repeat the append) + appendGroup(tree, "test"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(1)); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test")); + } + + { // append multiple groups + std::vector names{"test2", "test3"}; + + appendGroups(tree, names); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(3)); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test2")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test2")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test3")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test3")); + } + + { // append to a copy + PointDataTree tree2(tree); + + appendGroup(tree2, "copy1"); + + CPPUNIT_ASSERT(!attributeSet.descriptor().hasGroup("copy1")); + CPPUNIT_ASSERT(tree2.beginLeaf()->attributeSet().descriptor().hasGroup("copy1")); + } + + { // drop a group + dropGroup(tree, "test2"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(2)); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test3")); + CPPUNIT_ASSERT(attributeSet4.descriptor().hasGroup("test3")); + } + + { // drop multiple groups + std::vector names{"test", "test3"}; + + dropGroups(tree, names); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(0)); + } + + { // drop a copy + appendGroup(tree, "copy2"); + + PointDataTree tree2(tree); + + dropGroup(tree2, "copy2"); + + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("copy2")); + CPPUNIT_ASSERT(!tree2.beginLeaf()->attributeSet().descriptor().hasGroup("copy2")); + + dropGroup(tree, "copy2"); + } + + { // set group membership + appendGroup(tree, "test"); + + setGroup(tree, "test", true); + + GroupFilter filter("test", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(4)); + + setGroup(tree, "test", false); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(0)); + + dropGroup(tree, "test"); + } + + { // drop all groups + appendGroup(tree, "test"); + appendGroup(tree, "test2"); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(2)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(1)); + + dropGroups(tree); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(0)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(0)); + } + + { // check that newly added groups have empty group membership + + // recreate the grid with 3 points in one leaf + + positions = {{1, 1, 1}, {1, 2, 1}, {2, 1, 1}}; + grid = createPointDataGrid(positions, *transform); + PointDataTree& newTree = grid->tree(); + + appendGroup(newTree, "test"); + + // test that a completely new group (with a new group attribute) + // has empty membership + + CPPUNIT_ASSERT(newTree.cbeginLeaf()); + GroupFilter filter("test", newTree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(newTree, filter), Index64(0)); + + // check that membership in a group that was not created with a + // new attribute array is still empty. + // we will append a second group, set its membership, then + // drop it and append a new group with the same name again + + appendGroup(newTree, "test2"); + + PointDataTree::LeafIter leafIter2 = newTree.beginLeaf(); + CPPUNIT_ASSERT(leafIter2); + + GroupWriteHandle test2Handle = leafIter2->groupWriteHandle("test2"); + + test2Handle.set(0, true); + test2Handle.set(2, true); + + GroupFilter filter2("test2", newTree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(newTree, filter2), Index64(2)); + + // drop and re-add group + + dropGroup(newTree, "test2"); + appendGroup(newTree, "test2"); + + // check that group is fully cleared and does not have previously existing data + + CPPUNIT_ASSERT_EQUAL(pointCount(newTree, filter2), Index64(0)); + } + +} + + +void +TestPointGroup::testCompact() +{ + std::vector positions{{1, 1, 1}}; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + PointDataGrid::Ptr grid = createPointDataGrid(positions, *transform); + PointDataTree& tree = grid->tree(); + + // check one leaf + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), Index32(1)); + + // retrieve first and last leaf attribute sets + + PointDataTree::LeafCIter leafIter = tree.cbeginLeaf(); + const AttributeSet& attributeSet = leafIter->attributeSet(); + + std::stringstream ss; + + { // append nine groups + for (int i = 0; i < 8; i++) { + ss.str(""); + ss << "test" << i; + appendGroup(tree, ss.str()); + } + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(8)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(1)); + + appendGroup(tree, "test8"); + + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test0")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test7")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test8")); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(9)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(2)); + } + + { // drop first attribute then compact + dropGroup(tree, "test5", /*compact=*/false); + + CPPUNIT_ASSERT(!attributeSet.descriptor().hasGroup("test5")); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(8)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(2)); + + compactGroups(tree); + + CPPUNIT_ASSERT(!attributeSet.descriptor().hasGroup("test5")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test7")); + CPPUNIT_ASSERT(attributeSet.descriptor().hasGroup("test8")); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(8)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(1)); + } + + { // append seventeen groups, drop most of them, then compact + for (int i = 0; i < 17; i++) { + ss.str(""); + ss << "test" << i; + appendGroup(tree, ss.str()); + } + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(17)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(3)); + + // delete all but 0, 5, 9, 15 + + for (int i = 0; i < 17; i++) { + if (i == 0 || i == 5 || i == 9 || i == 15) continue; + ss.str(""); + ss << "test" << i; + dropGroup(tree, ss.str(), /*compact=*/false); + } + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(3)); + + // make a copy + + PointDataTree tree2(tree); + + // compact - should now occupy one attribute + + compactGroups(tree); + + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().groupMap().size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(attributeSet.descriptor().count(GroupAttributeArray::attributeType()), size_t(1)); + + // check descriptor has been deep copied + + CPPUNIT_ASSERT_EQUAL(tree2.cbeginLeaf()->attributeSet().descriptor().groupMap().size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(tree2.cbeginLeaf()->attributeSet().descriptor().count(GroupAttributeArray::attributeType()), size_t(3)); + } +} + + +void +TestPointGroup::testSet() +{ + // four points in the same leaf + + std::vector positions = { + {1, 1, 1}, + {1, 2, 1}, + {2, 1, 1}, + {2, 2, 1}, + {100, 100, 100}, + {100, 101, 100} + }; + + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + const PointAttributeVector pointList(positions); + + openvdb::tools::PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr grid = createPointDataGrid(*pointIndexGrid, pointList, *transform); + PointDataTree& tree = grid->tree(); + + appendGroup(tree, "test"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + GroupFilter filter("test", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(0)); + + // copy tree for descriptor sharing test + + PointDataTree tree2(tree); + + std::vector membership{1, 0, 1, 1, 0, 1}; + + // test add to group + + setGroup(tree, "test", true); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(6)); + + // test nothing is done if the index tree contains no valid indices + + tools::PointIndexGrid::Ptr tmpIndexGrid = tools::PointIndexGrid::create(); + setGroup(tree, tmpIndexGrid->tree(), {0,0,0,0,0,0}, "test", /*remove*/true); + CPPUNIT_ASSERT_EQUAL(Index64(6), pointCount(tree, filter)); + + // test throw on out of range index + + auto indexLeaf = tmpIndexGrid->tree().touchLeaf(tree.cbeginLeaf()->origin()); + indexLeaf->indices().emplace_back(membership.size()); + CPPUNIT_ASSERT_THROW(setGroup(tree, tmpIndexGrid->tree(), membership, "test"), IndexError); + CPPUNIT_ASSERT_EQUAL(Index64(6), pointCount(tree, filter)); + + // test remove flag + + setGroup(tree, pointIndexGrid->tree(), membership, "test", /*remove*/false); + CPPUNIT_ASSERT_EQUAL(Index64(6), pointCount(tree, filter)); + + setGroup(tree, pointIndexGrid->tree(), membership, "test", /*remove*/true); + CPPUNIT_ASSERT_EQUAL(Index64(4), pointCount(tree, filter)); + + setGroup(tree, pointIndexGrid->tree(), {0,1,0,0,1,0}, "test", /*remove*/false); + CPPUNIT_ASSERT_EQUAL(Index64(6), pointCount(tree, filter)); + + setGroup(tree, pointIndexGrid->tree(), membership, "test", /*remove*/true); + + // check that descriptor remains shared + + appendGroup(tree2, "copy1"); + + CPPUNIT_ASSERT(!tree.cbeginLeaf()->attributeSet().descriptor().hasGroup("copy1")); + + dropGroup(tree2, "copy1"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + GroupFilter filter2("test", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter2), Index64(4)); + + { // IO + // setup temp directory + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + std::string filename; + + // write out grid to a temp file + { + filename = tempDir + "/openvdb_test_point_load"; + + io::File fileOut(filename); + + GridCPtrVec grids{grid}; + + fileOut.write(grids); + } + + // read test groups + { + io::File fileIn(filename); + fileIn.open(); + + GridPtrVecPtr grids = fileIn.getGrids(); + + fileIn.close(); + + CPPUNIT_ASSERT_EQUAL(grids->size(), size_t(1)); + + PointDataGrid::Ptr inputGrid = GridBase::grid((*grids)[0]); + PointDataTree& treex = inputGrid->tree(); + + CPPUNIT_ASSERT(treex.cbeginLeaf()); + + const PointDataGrid::TreeType::LeafNodeType& leaf = *treex.cbeginLeaf(); + + const AttributeSet::Descriptor& descriptor = leaf.attributeSet().descriptor(); + + CPPUNIT_ASSERT(descriptor.hasGroup("test")); + CPPUNIT_ASSERT_EQUAL(descriptor.groupMap().size(), size_t(1)); + + CPPUNIT_ASSERT_EQUAL(pointCount(treex), Index64(6)); + GroupFilter filter3("test", leaf.attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(treex, filter3), Index64(4)); + } + std::remove(filename.c_str()); + } +} + + +void +TestPointGroup::testFilter() +{ + const float voxelSize(1.0); + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + PointDataGrid::Ptr grid; + + { // four points in the same leaf + std::vector positions = { + {1, 1, 1}, + {1, 2, 1}, + {2, 1, 1}, + {2, 2, 1}, + {100, 100, 100}, + {100, 101, 100} + }; + + const PointAttributeVector pointList(positions); + + openvdb::tools::PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + grid = createPointDataGrid(*pointIndexGrid, pointList, *transform); + } + + PointDataTree& tree = grid->tree(); + + { // first point filter + appendGroup(tree, "first"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + GroupFilter filter("first", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(0)); + + FirstFilter filter2; + + setGroupByFilter(tree, "first", filter2); + + auto iter = tree.cbeginLeaf(); + + for ( ; iter; ++iter) { + CPPUNIT_ASSERT_EQUAL(iter->groupPointCount("first"), Index64(1)); + } + + GroupFilter filter3("first", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter3), Index64(2)); + } + + const openvdb::BBoxd bbox(openvdb::Vec3d(0, 1.5, 0), openvdb::Vec3d(101, 100.5, 101)); + + { // bbox filter + appendGroup(tree, "bbox"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + GroupFilter filter("bbox", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(0)); + + BBoxFilter filter2(*transform, bbox); + + setGroupByFilter(tree, "bbox", filter2); + + GroupFilter filter3("bbox", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter3), Index64(3)); + } + + { // first point filter and bbox filter (intersection of the above two filters) + appendGroup(tree, "first_bbox"); + + CPPUNIT_ASSERT_EQUAL(pointCount(tree), Index64(6)); + GroupFilter filter("first_bbox", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter), Index64(0)); + + using FirstBBoxFilter = BinaryFilter; + + FirstFilter firstFilter; + BBoxFilter bboxFilter(*transform, bbox); + FirstBBoxFilter filter2(firstFilter, bboxFilter); + + setGroupByFilter(tree, "first_bbox", filter2); + + GroupFilter filter3("first_bbox", tree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(tree, filter3), Index64(1)); + + std::vector positions; + + for (auto iter = tree.cbeginLeaf(); iter; ++iter) { + GroupFilter filterx("first_bbox", iter->attributeSet()); + auto filterIndexIter = iter->beginIndexOn(filterx); + + auto handle = AttributeHandle::create(iter->attributeArray("P")); + + for ( ; filterIndexIter; ++filterIndexIter) { + const openvdb::Coord ijk = filterIndexIter.getCoord(); + positions.push_back(handle->get(*filterIndexIter) + ijk.asVec3d()); + } + } + + CPPUNIT_ASSERT_EQUAL(positions.size(), size_t(1)); + CPPUNIT_ASSERT_EQUAL(positions[0], Vec3f(100, 100, 100)); + } + + { // add 1000 points in three leafs (positions aren't important) + + std::vector positions(1000, {1, 1, 1}); + positions.insert(positions.end(), 1000, {1, 1, 9}); + positions.insert(positions.end(), 1000, {9, 9, 9}); + + const PointAttributeVector pointList(positions); + + openvdb::tools::PointIndexGrid::Ptr pointIndexGrid = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + grid = createPointDataGrid(*pointIndexGrid, pointList, *transform); + + PointDataTree& newTree = grid->tree(); + + CPPUNIT_ASSERT_EQUAL(pointCount(newTree), Index64(3000)); + + // random - maximum + + appendGroup(newTree, "random_maximum"); + + const Index64 target = 1001; + + setGroupByRandomTarget(newTree, "random_maximum", target); + + GroupFilter filter("random_maximum", newTree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(newTree, filter), target); + + // random - percentage + + appendGroup(newTree, "random_percentage"); + + setGroupByRandomPercentage(newTree, "random_percentage", 33.333333f); + + GroupFilter filter2("random_percentage", newTree.cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(pointCount(newTree, filter2), Index64(1000)); + } +} diff --git a/openvdb/unittest/TestPointIndexGrid.cc b/openvdb/unittest/TestPointIndexGrid.cc new file mode 100644 index 00000000..17f83939 --- /dev/null +++ b/openvdb/unittest/TestPointIndexGrid.cc @@ -0,0 +1,316 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include +#include +#include +#include "util.h" // for genPoints + + +struct TestPointIndexGrid: public CppUnit::TestCase +{ + CPPUNIT_TEST_SUITE(TestPointIndexGrid); + CPPUNIT_TEST(testPointIndexGrid); + CPPUNIT_TEST(testPointIndexFilter); + CPPUNIT_TEST(testWorldSpaceSearchAndUpdate); + CPPUNIT_TEST_SUITE_END(); + + void testPointIndexGrid(); + void testPointIndexFilter(); + void testWorldSpaceSearchAndUpdate(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointIndexGrid); + +//////////////////////////////////////// + +namespace { + +class PointList +{ +public: + typedef openvdb::Vec3R PosType; + + PointList(const std::vector& points) + : mPoints(&points) + { + } + + size_t size() const { + return mPoints->size(); + } + + void getPos(size_t n, PosType& xyz) const { + xyz = (*mPoints)[n]; + } + +protected: + std::vector const * const mPoints; +}; // PointList + + +template +bool hasDuplicates(const std::vector& items) +{ + std::vector vec(items); + std::sort(vec.begin(), vec.end()); + + size_t duplicates = 0; + for (size_t n = 1, N = vec.size(); n < N; ++n) { + if (vec[n] == vec[n-1]) ++duplicates; + } + return duplicates != 0; +} + + +template +struct WeightedAverageAccumulator { + typedef T ValueType; + WeightedAverageAccumulator(T const * const array, const T radius) + : mValues(array), mInvRadius(1.0/radius), mWeightSum(0.0), mValueSum(0.0) {} + + void reset() { mWeightSum = mValueSum = T(0.0); } + + void operator()(const T distSqr, const size_t pointIndex) { + const T weight = T(1.0) - openvdb::math::Sqrt(distSqr) * mInvRadius; + mWeightSum += weight; + mValueSum += weight * mValues[pointIndex]; + } + + T result() const { return mWeightSum > T(0.0) ? mValueSum / mWeightSum : T(0.0); } + +private: + T const * const mValues; + const T mInvRadius; + T mWeightSum, mValueSum; +}; // struct WeightedAverageAccumulator + +} // namespace + + + +//////////////////////////////////////// + + +void +TestPointIndexGrid::testPointIndexGrid() +{ + const float voxelSize = 0.01f; + const openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + // generate points + + std::vector points; + unittest_util::genPoints(40000, points); + + PointList pointList(points); + + + // construct data structure + typedef openvdb::tools::PointIndexGrid PointIndexGrid; + + PointIndexGrid::Ptr pointGridPtr = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + openvdb::CoordBBox bbox; + pointGridPtr->tree().evalActiveVoxelBoundingBox(bbox); + + // coord bbox search + + typedef PointIndexGrid::ConstAccessor ConstAccessor; + typedef openvdb::tools::PointIndexIterator<> PointIndexIterator; + + ConstAccessor acc = pointGridPtr->getConstAccessor(); + PointIndexIterator it(bbox, acc); + + CPPUNIT_ASSERT(it.test()); + CPPUNIT_ASSERT_EQUAL(points.size(), it.size()); + + // fractional bbox search + + openvdb::BBoxd region(bbox.min().asVec3d(), bbox.max().asVec3d()); + + // points are bucketed in a cell-centered fashion, we need to pad the + // coordinate range to get the same search region in the fractional bbox. + region.expand(voxelSize * 0.5); + + it.searchAndUpdate(region, acc, pointList, *transform); + + CPPUNIT_ASSERT(it.test()); + CPPUNIT_ASSERT_EQUAL(points.size(), it.size()); + + { + std::vector vec; + vec.reserve(it.size()); + for (; it; ++it) { + vec.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(vec.size(), it.size()); + CPPUNIT_ASSERT(!hasDuplicates(vec)); + } + + // radial search + openvdb::Vec3d center = region.getCenter(); + double radius = region.extents().x() * 0.5; + it.searchAndUpdate(center, radius, acc, pointList, *transform); + + CPPUNIT_ASSERT(it.test()); + CPPUNIT_ASSERT_EQUAL(points.size(), it.size()); + + { + std::vector vec; + vec.reserve(it.size()); + for (; it; ++it) { + vec.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(vec.size(), it.size()); + CPPUNIT_ASSERT(!hasDuplicates(vec)); + } + + + center = region.min(); + it.searchAndUpdate(center, radius, acc, pointList, *transform); + + CPPUNIT_ASSERT(it.test()); + + { + std::vector vec; + vec.reserve(it.size()); + for (; it; ++it) { + vec.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(vec.size(), it.size()); + CPPUNIT_ASSERT(!hasDuplicates(vec)); + + // check that no points where missed. + + std::vector indexMask(points.size(), 0); + for (size_t n = 0, N = vec.size(); n < N; ++n) { + indexMask[vec[n]] = 1; + } + + const double r2 = radius * radius; + openvdb::Vec3R v; + for (size_t n = 0, N = indexMask.size(); n < N; ++n) { + v = center - transform->worldToIndex(points[n]); + if (indexMask[n] == 0) { + CPPUNIT_ASSERT(!(v.lengthSqr() < r2)); + } else { + CPPUNIT_ASSERT(v.lengthSqr() < r2); + } + } + } + + + // Check partitioning + + CPPUNIT_ASSERT(openvdb::tools::isValidPartition(pointList, *pointGridPtr)); + + points[10000].x() += 1.5; // manually modify a few points. + points[20000].x() += 1.5; + points[30000].x() += 1.5; + + CPPUNIT_ASSERT(!openvdb::tools::isValidPartition(pointList, *pointGridPtr)); + + PointIndexGrid::Ptr pointGrid2Ptr = + openvdb::tools::getValidPointIndexGrid(pointList, pointGridPtr); + + CPPUNIT_ASSERT(openvdb::tools::isValidPartition(pointList, *pointGrid2Ptr)); +} + + +void +TestPointIndexGrid::testPointIndexFilter() +{ + // generate points + const float voxelSize = 0.01f; + const size_t pointCount = 10000; + const openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + std::vector points; + unittest_util::genPoints(pointCount, points); + + PointList pointList(points); + + // construct data structure + typedef openvdb::tools::PointIndexGrid PointIndexGrid; + + PointIndexGrid::Ptr pointGridPtr = + openvdb::tools::createPointIndexGrid(pointList, *transform); + + + std::vector pointDensity(pointCount, 1.0); + + openvdb::tools::PointIndexFilter + filter(pointList, pointGridPtr->tree(), pointGridPtr->transform()); + + const double radius = 3.0 * voxelSize; + + WeightedAverageAccumulator + accumulator(&pointDensity.front(), radius); + + double sum = 0.0; + for (size_t n = 0, N = points.size(); n < N; ++n) { + accumulator.reset(); + filter.searchAndApply(points[n], radius, accumulator); + sum += accumulator.result(); + } + + CPPUNIT_ASSERT_DOUBLES_EQUAL(sum, double(points.size()), 1e-6); +} + + +void +TestPointIndexGrid::testWorldSpaceSearchAndUpdate() +{ + // Create random particles in a cube. + openvdb::math::Rand01<> rnd(0); + + const size_t N = 1000000; + std::vector pos; + pos.reserve(N); + + // Create a box to query points. + openvdb::BBoxd wsBBox(openvdb::Vec3d(0.25), openvdb::Vec3d(0.75)); + + std::set indexListA; + + for (size_t i = 0; i < N; ++i) { + openvdb::Vec3d p(rnd(), rnd(), rnd()); + pos.push_back(p); + + if (wsBBox.isInside(p)) { + indexListA.insert(i); + } + } + + // Create a point index grid + const double dx = 0.025; + openvdb::math::Transform::Ptr transform = openvdb::math::Transform::createLinearTransform(dx); + + PointList pointArray(pos); + openvdb::tools::PointIndexGrid::Ptr pointIndexGrid + = openvdb::tools::createPointIndexGrid(pointArray, *transform); + + // Search for points within the box. + openvdb::tools::PointIndexGrid::ConstAccessor acc = pointIndexGrid->getConstAccessor(); + + openvdb::tools::PointIndexIterator pointIndexIter; + pointIndexIter.worldSpaceSearchAndUpdate(wsBBox, acc, pointArray, pointIndexGrid->transform()); + + std::set indexListB; + for (; pointIndexIter; ++pointIndexIter) { + indexListB.insert(*pointIndexIter); + } + + CPPUNIT_ASSERT_EQUAL(indexListA.size(), indexListB.size()); +} + diff --git a/openvdb/unittest/TestPointMask.cc b/openvdb/unittest/TestPointMask.cc new file mode 100644 index 00000000..9d9c9f37 --- /dev/null +++ b/openvdb/unittest/TestPointMask.cc @@ -0,0 +1,352 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointMask: public CppUnit::TestCase +{ +public: + + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointMask); + CPPUNIT_TEST(testMask); + CPPUNIT_TEST(testMaskDeformer); + CPPUNIT_TEST_SUITE_END(); + + void testMask(); + void testMaskDeformer(); + +}; // class TestPointMask + + +void +TestPointMask::testMask() +{ + std::vector positions = { + {1, 1, 1}, + {1, 5, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + const PointAttributeVector pointList(positions); + + const float voxelSize = 0.1f; + openvdb::math::Transform::Ptr transform( + openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + + { // simple topology copy + auto mask = convertPointsToMask(*points); + + CPPUNIT_ASSERT_EQUAL(points->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(4)); + } + + { // mask grid instead of bool grid + auto mask = convertPointsToMask(*points); + + CPPUNIT_ASSERT_EQUAL(points->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(4)); + } + + { // identical transform + auto mask = convertPointsToMask(*points, *transform); + + CPPUNIT_ASSERT_EQUAL(points->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(4)); + } + + // assign point 3 to new group "test" + + appendGroup(points->tree(), "test"); + + std::vector groups{0,0,1,0}; + + setGroup(points->tree(), pointIndexGrid->tree(), groups, "test"); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + { // convert in turn "test" and not "test" + MultiGroupFilter filter(includeGroups, excludeGroups, + points->tree().cbeginLeaf()->attributeSet()); + auto mask = convertPointsToMask(*points, filter); + + CPPUNIT_ASSERT_EQUAL(points->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(1)); + + MultiGroupFilter filter2(excludeGroups, includeGroups, + points->tree().cbeginLeaf()->attributeSet()); + mask = convertPointsToMask(*points, filter2); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(3)); + } + + { // use a much larger voxel size that splits the points into two regions + const float newVoxelSize(4); + openvdb::math::Transform::Ptr newTransform( + openvdb::math::Transform::createLinearTransform(newVoxelSize)); + + auto mask = convertPointsToMask(*points, *newTransform); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(2)); + + MultiGroupFilter filter(includeGroups, excludeGroups, + points->tree().cbeginLeaf()->attributeSet()); + mask = convertPointsToMask(*points, *newTransform, filter); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(1)); + + MultiGroupFilter filter2(excludeGroups, includeGroups, + points->tree().cbeginLeaf()->attributeSet()); + mask = convertPointsToMask(*points, *newTransform, filter2); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(2)); + } +} + + +struct StaticVoxelDeformer +{ + StaticVoxelDeformer(const Vec3d& position) + : mPosition(position) { } + + template + void reset(LeafT& /*leaf*/, size_t /*idx*/) { } + + template + void apply(Vec3d& position, IterT&) const { position = mPosition; } + +private: + Vec3d mPosition; +}; + +template +struct YOffsetDeformer +{ + YOffsetDeformer(const Vec3d& offset) : mOffset(offset) { } + + template + void reset(LeafT& /*leaf*/, size_t /*idx*/) { } + + template + void apply(Vec3d& position, IterT&) const { position += mOffset; } + + Vec3d mOffset; +}; + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace points { + +// configure both voxel deformers to be applied in index-space + +template<> +struct DeformerTraits { + static const bool IndexSpace = true; +}; + +template<> +struct DeformerTraits> { + static const bool IndexSpace = true; +}; + +} // namespace points +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +void +TestPointMask::testMaskDeformer() +{ + // This test validates internal functionality that is used in various applications, such as + // building masks and producing count grids. Note that by convention, methods that live + // in an "internal" namespace are typically not promoted as part of the public API + // and thus do not receive the same level of rigour in avoiding breaking API changes. + + std::vector positions = { + {1, 1, 1}, + {1, 5, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + const PointAttributeVector pointList(positions); + + const float voxelSize = 0.1f; + openvdb::math::Transform::Ptr transform( + openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + + // assign point 3 to new group "test" + + appendGroup(points->tree(), "test"); + + std::vector groups{0,0,1,0}; + + setGroup(points->tree(), pointIndexGrid->tree(), groups, "test"); + + NullFilter nullFilter; + + { // null deformer + NullDeformer deformer; + + auto mask = point_mask_internal::convertPointsToScalar( + *points, *transform, nullFilter, deformer); + + auto mask2 = convertPointsToMask(*points); + + CPPUNIT_ASSERT_EQUAL(points->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT(mask->tree().hasSameTopology(mask2->tree())); + CPPUNIT_ASSERT(mask->tree().hasSameTopology(points->tree())); + } + + { // static voxel deformer + // collapse all points into a random voxel at (9, 13, 106) + StaticVoxelDeformer deformer(Vec3d(9, 13, 106)); + + auto mask = point_mask_internal::convertPointsToScalar( + *points, *transform, nullFilter, deformer); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(1)); + CPPUNIT_ASSERT(!mask->tree().cbeginLeaf()->isValueOn(Coord(9, 13, 105))); + CPPUNIT_ASSERT(mask->tree().cbeginLeaf()->isValueOn(Coord(9, 13, 106))); + } + + { // +y offset deformer + Vec3d offset(0, 41.7, 0); + YOffsetDeformer deformer(offset); + + auto mask = point_mask_internal::convertPointsToScalar( + *points, *transform, nullFilter, deformer); + + // (repeat with deformer configured as world-space) + YOffsetDeformer deformerWS(offset * voxelSize); + + auto maskWS = point_mask_internal::convertPointsToScalar( + *points, *transform, nullFilter, deformerWS); + + CPPUNIT_ASSERT_EQUAL(mask->tree().activeVoxelCount(), Index64(4)); + CPPUNIT_ASSERT_EQUAL(maskWS->tree().activeVoxelCount(), Index64(4)); + + std::vector maskVoxels; + std::vector maskVoxelsWS; + std::vector pointVoxels; + + for (auto leaf = mask->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + maskVoxels.emplace_back(iter.getCoord()); + } + } + + for (auto leaf = maskWS->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + maskVoxelsWS.emplace_back(iter.getCoord()); + } + } + + for (auto leaf = points->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + pointVoxels.emplace_back(iter.getCoord()); + } + } + + std::sort(maskVoxels.begin(), maskVoxels.end()); + std::sort(maskVoxelsWS.begin(), maskVoxelsWS.end()); + std::sort(pointVoxels.begin(), pointVoxels.end()); + + CPPUNIT_ASSERT_EQUAL(maskVoxels.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(maskVoxelsWS.size(), size_t(4)); + CPPUNIT_ASSERT_EQUAL(pointVoxels.size(), size_t(4)); + + for (int i = 0; i < int(pointVoxels.size()); i++) { + Coord newCoord(pointVoxels[i]); + newCoord.x() = static_cast(newCoord.x() + offset.x()); + newCoord.y() = static_cast(math::Round(newCoord.y() + offset.y())); + newCoord.z() = static_cast(newCoord.z() + offset.z()); + CPPUNIT_ASSERT_EQUAL(maskVoxels[i], newCoord); + CPPUNIT_ASSERT_EQUAL(maskVoxelsWS[i], newCoord); + } + + // use a different transform to verify deformers and transforms can be used together + + const float newVoxelSize = 0.02f; + openvdb::math::Transform::Ptr newTransform( + openvdb::math::Transform::createLinearTransform(newVoxelSize)); + + auto mask2 = point_mask_internal::convertPointsToScalar( + *points, *newTransform, nullFilter, deformer); + + CPPUNIT_ASSERT_EQUAL(mask2->tree().activeVoxelCount(), Index64(4)); + + std::vector maskVoxels2; + + for (auto leaf = mask2->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + maskVoxels2.emplace_back(iter.getCoord()); + } + } + + std::sort(maskVoxels2.begin(), maskVoxels2.end()); + + for (int i = 0; i < int(maskVoxels.size()); i++) { + Coord newCoord(pointVoxels[i]); + newCoord.x() = static_cast((newCoord.x() + offset.x()) * 5); + newCoord.y() = static_cast(math::Round((newCoord.y() + offset.y()) * 5)); + newCoord.z() = static_cast((newCoord.z() + offset.z()) * 5); + CPPUNIT_ASSERT_EQUAL(maskVoxels2[i], newCoord); + } + + // only use points in group "test" + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + MultiGroupFilter filter(includeGroups, excludeGroups, + points->tree().cbeginLeaf()->attributeSet()); + + auto mask3 = point_mask_internal::convertPointsToScalar( + *points, *transform, filter, deformer); + + CPPUNIT_ASSERT_EQUAL(mask3->tree().activeVoxelCount(), Index64(1)); + + for (auto leaf = mask3->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + Coord newCoord(pointVoxels[2]); + newCoord.x() = static_cast(newCoord.x() + offset.x()); + newCoord.y() = static_cast(math::Round(newCoord.y() + offset.y())); + newCoord.z() = static_cast(newCoord.z() + offset.z()); + CPPUNIT_ASSERT_EQUAL(iter.getCoord(), newCoord); + } + } + } +} + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointMask); diff --git a/openvdb/unittest/TestPointMove.cc b/openvdb/unittest/TestPointMove.cc new file mode 100644 index 00000000..4820c40a --- /dev/null +++ b/openvdb/unittest/TestPointMove.cc @@ -0,0 +1,1176 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include "util.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointMove: public CppUnit::TestCase +{ +public: + + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointMove); + CPPUNIT_TEST(testCachedDeformer); + CPPUNIT_TEST(testMoveLocal); + CPPUNIT_TEST(testMoveGlobal); + CPPUNIT_TEST(testCustomDeformer); + CPPUNIT_TEST(testPointData); + CPPUNIT_TEST(testPointOrder); + CPPUNIT_TEST_SUITE_END(); + + void testCachedDeformer(); + void testMoveLocal(); + void testMoveGlobal(); + void testCustomDeformer(); + void testPointData(); + void testPointOrder(); +}; // class TestPointMove + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointMove); + + +//////////////////////////////////////// + + +namespace { + +struct OffsetDeformer +{ + OffsetDeformer(const Vec3d& _offset) + : offset(_offset){ } + + template + void reset(const LeafT&, size_t /*idx*/) { } + + template + void apply(Vec3d& position, const IndexIterT&) const + { + position += offset; + } + + Vec3d offset; +}; // struct OffsetDeformer + +template +struct OffsetFilteredDeformer +{ + OffsetFilteredDeformer(const Vec3d& _offset, + const FilterT& _filter) + : offset(_offset) + , filter(_filter) { } + + template + void reset(const LeafT& leaf, size_t /*idx*/) + { + filter.template reset(leaf); + } + + template + void apply(Vec3d& position, const IndexIterT& iter) const + { + if (!filter.template valid(iter)) return; + position += offset; + } + + //void finalize() const { } + + Vec3d offset; + FilterT filter; +}; // struct OffsetFilteredDeformer + + +PointDataGrid::Ptr +positionsToGrid(const std::vector& positions, const float voxelSize = 1.0) +{ + const PointAttributeVector pointList(positions); + + openvdb::math::Transform::Ptr transform( + openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + + // assign point 3 to new group "test" if more than 3 points + + if (positions.size() > 3) { + appendGroup(points->tree(), "test"); + + std::vector groups(positions.size(), 0); + groups[2] = 1; + + setGroup(points->tree(), pointIndexGrid->tree(), groups, "test"); + } + + return points; +} + + +std::vector +gridToPositions(const PointDataGrid::Ptr& points, bool sort = true) +{ + std::vector positions; + + for (auto leaf = points->tree().beginLeaf(); leaf; ++leaf) { + + const openvdb::points::AttributeArray& positionArray = + leaf->constAttributeArray("P"); + openvdb::points::AttributeHandle positionHandle(positionArray); + + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + openvdb::Vec3f voxelPosition = positionHandle.get(*iter); + openvdb::Vec3d xyz = iter.getCoord().asVec3d(); + openvdb::Vec3f worldPosition = points->transform().indexToWorld(voxelPosition + xyz); + + positions.push_back(worldPosition); + } + } + + if (sort) std::sort(positions.begin(), positions.end()); + return positions; +} + + +std::vector +applyOffset(const std::vector& positions, const Vec3s& offset) +{ + std::vector newPositions; + + for (const auto& it : positions) { + newPositions.emplace_back(it + offset); + } + + std::sort(newPositions.begin(), newPositions.end()); + return newPositions; +} + + +template +inline void +ASSERT_APPROX_EQUAL(const std::vector& a, const std::vector& b, + const Index lineNumber, const double /*tolerance*/ = 1e-6) +{ + std::stringstream ss; + ss << "Assertion Line Number: " << lineNumber; + + CPPUNIT_ASSERT_EQUAL_MESSAGE(ss.str(), a.size(), b.size()); + + for (int i = 0; i < a.size(); i++) { + CPPUNIT_ASSERT_MESSAGE(ss.str(), math::isApproxEqual(a[i], b[i])); + } +} + + +template +inline void +ASSERT_APPROX_EQUAL(const std::vector>& a, const std::vector>& b, + const Index lineNumber, const double /*tolerance*/ = 1e-6) +{ + std::stringstream ss; + ss << "Assertion Line Number: " << lineNumber; + + CPPUNIT_ASSERT_EQUAL_MESSAGE(ss.str(), a.size(), b.size()); + + for (size_t i = 0; i < a.size(); i++) { + CPPUNIT_ASSERT_MESSAGE(ss.str(), math::isApproxEqual(a[i], b[i])); + } +} + +struct NullObject { }; + +// A dummy iterator that can be used to match LeafIter and IndexIter interfaces +struct DummyIter +{ + DummyIter(Index _index): index(_index) { } + //Index pos() const { return index; } + Index operator*() const { return index; } + Index index; +}; + +struct OddIndexFilter +{ + static bool initialized() { return true; } + static index::State state() { return index::PARTIAL; } + template + static index::State state(const LeafT&) { return index::PARTIAL; } + + template + void reset(const LeafT&) { } + template + bool valid(const IterT& iter) const { + return ((*iter) % 2) == 1; + } +}; + +} // namespace + + +void +TestPointMove::testCachedDeformer() +{ + NullObject nullObject; + + // create an empty cache and CachedDeformer + CachedDeformer::Cache cache; + CPPUNIT_ASSERT(cache.leafs.empty()); + + CachedDeformer cachedDeformer(cache); + + // check initialization is as expected + CPPUNIT_ASSERT(cachedDeformer.mLeafVec == nullptr); + CPPUNIT_ASSERT(cachedDeformer.mLeafMap == nullptr); + + // throw when resetting cachedDeformer with an empty cache + CPPUNIT_ASSERT_THROW(cachedDeformer.reset(nullObject, size_t(0)), openvdb::IndexError); + + // manually create one leaf in the cache + cache.leafs.resize(1); + auto& leaf = cache.leafs[0]; + CPPUNIT_ASSERT(leaf.vecData.empty()); + CPPUNIT_ASSERT(leaf.mapData.empty()); + CPPUNIT_ASSERT_EQUAL(Index(0), leaf.totalSize); + + // reset should no longer throw and leaf vec pointer should now be non-null + CPPUNIT_ASSERT_NO_THROW(cachedDeformer.reset(nullObject, size_t(0))); + CPPUNIT_ASSERT(cachedDeformer.mLeafMap == nullptr); + CPPUNIT_ASSERT(cachedDeformer.mLeafVec != nullptr); + CPPUNIT_ASSERT(cachedDeformer.mLeafVec->empty()); + + // nothing stored in the cache so position is unchanged + DummyIter indexIter(0); + Vec3d position(0,0,0); + Vec3d newPosition(position); + cachedDeformer.apply(newPosition, indexIter); + CPPUNIT_ASSERT(math::isApproxEqual(position, newPosition)); + + // insert a new value into the leaf vector and verify tbe position is deformed + Vec3d deformedPosition(5,10,15); + leaf.vecData.push_back(deformedPosition); + cachedDeformer.apply(newPosition, indexIter); + CPPUNIT_ASSERT(math::isApproxEqual(deformedPosition, newPosition)); + + // insert a new value into the leaf map and verify the position is deformed as before + Vec3d newDeformedPosition(2,3,4); + leaf.mapData.insert({0, newDeformedPosition}); + newPosition.setZero(); + cachedDeformer.apply(newPosition, indexIter); + CPPUNIT_ASSERT(math::isApproxEqual(deformedPosition, newPosition)); + + // now reset the cached deformer and verify the value is updated + // (map has precedence over vector) + cachedDeformer.reset(nullObject, size_t(0)); + CPPUNIT_ASSERT(cachedDeformer.mLeafMap != nullptr); + CPPUNIT_ASSERT(cachedDeformer.mLeafVec == nullptr); + newPosition.setZero(); + cachedDeformer.apply(newPosition, indexIter); + CPPUNIT_ASSERT(math::isApproxEqual(newDeformedPosition, newPosition)); + + // four points, some same leaf, some different + const float voxelSize = 1.0f; + std::vector positions = { + {5, 2, 3}, + {2, 4, 1}, + {50, 5, 1}, + {3, 20, 1}, + }; + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + // evaluate with null deformer and no filter + + NullDeformer nullDeformer; + NullFilter nullFilter; + cachedDeformer.evaluate(*points, nullDeformer, nullFilter); + + CPPUNIT_ASSERT_EQUAL(size_t(points->tree().leafCount()), cache.leafs.size()); + + int leafIndex = 0; + for (auto leafIter = points->tree().cbeginLeaf(); leafIter; ++leafIter) { + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + AttributeHandle handle(leafIter->constAttributeArray("P")); + Vec3f pos(handle.get(*iter) + iter.getCoord().asVec3s()); + Vec3f cachePosition = cache.leafs[leafIndex].vecData[*iter]; + CPPUNIT_ASSERT(math::isApproxEqual(pos, cachePosition)); + } + leafIndex++; + } + + // evaluate with Offset deformer and no filter + + Vec3d yOffset(1,2,3); + OffsetDeformer yOffsetDeformer(yOffset); + + cachedDeformer.evaluate(*points, yOffsetDeformer, nullFilter); + + CPPUNIT_ASSERT_EQUAL(size_t(points->tree().leafCount()), cache.leafs.size()); + + leafIndex = 0; + for (auto leafIter = points->tree().cbeginLeaf(); leafIter; ++leafIter) { + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + AttributeHandle handle(leafIter->constAttributeArray("P")); + Vec3f pos(handle.get(*iter) + iter.getCoord().asVec3s() + yOffset); + Vec3f cachePosition = cache.leafs[leafIndex].vecData[*iter]; + CPPUNIT_ASSERT(math::isApproxEqual(pos, cachePosition)); + } + leafIndex++; + } + + // evaluate with Offset deformer and OddIndex filter + + OddIndexFilter oddFilter; + cachedDeformer.evaluate(*points, yOffsetDeformer, oddFilter); + + CPPUNIT_ASSERT_EQUAL(size_t(points->tree().leafCount()), cache.leafs.size()); + + leafIndex = 0; + for (auto leafIter = points->tree().cbeginLeaf(); leafIter; ++leafIter) { + for (auto iter = leafIter->beginIndexOn(); iter; ++iter) { + AttributeHandle handle(leafIter->constAttributeArray("P")); + Vec3f pos(handle.get(*iter) + iter.getCoord().asVec3s() + yOffset); + Vec3f cachePosition = cache.leafs[leafIndex].vecData[*iter]; + CPPUNIT_ASSERT(math::isApproxEqual(pos, cachePosition)); + } + leafIndex++; + } +} + + +void +TestPointMove::testMoveLocal() +{ + // This test is for points that only move locally, meaning that + // they remain in the leaf from which they originated + + { // single point, y offset, same voxel + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {10, 10, 10}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // two points, y offset, same voxel + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {10, 10, 10}, + {10, 10.1f, 10}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // two points, y offset, different voxels + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {10, 10, 10}, + {10, 11, 10}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, y offset, same voxel, only third point is kept + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {10, 10, 10}, + {10, 10.1f, 10}, + {10, 10.2f, 10}, + {10, 10.3f, 10}, + }; + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[2]+offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + movePoints(*points, deformer, filter); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, y offset, different voxels, only third point is kept + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {10, 10, 10}, + {10, 11, 10}, + {10, 12, 10}, + {10, 13, 10}, + }; + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[2]+offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + movePoints(*points, deformer, filter); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, y offset, different voxels, only third point is moved + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + + std::vector positions = { + {10, 10, 10}, + {10, 11, 10}, + {10, 12, 10}, + {10, 13, 10}, + }; + + std::vector desiredPositions(positions); + desiredPositions[2] = Vec3s(positions[2] + offset); + + std::sort(desiredPositions.begin(), desiredPositions.end()); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + OffsetFilteredDeformer deformer(offset, filter); + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } +} + + +void +TestPointMove::testMoveGlobal() +{ + { // four points, all different leafs + const float voxelSize = 0.1f; + Vec3d offset(0, 10.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {1, 1, 1}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, all different leafs, only third point is kept + const float voxelSize = 0.1f; + Vec3d offset(0, 10.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {1, 1, 1}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[2]+offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + movePoints(*points, deformer, filter); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, all different leafs, third point is deleted + const float voxelSize = 0.1f; + Vec3d offset(0, 10.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {1, 1, 1}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[0]+offset); + desiredPositions.emplace_back(positions[1]+offset); + desiredPositions.emplace_back(positions[3]+offset); + + std::vector includeGroups; + std::vector excludeGroups{"test"}; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + movePoints(*points, deformer, filter); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // six points, some same leaf, some different + const float voxelSize = 1.0f; + Vec3d offset(0, 0.1, 0); + OffsetDeformer deformer(offset); + + std::vector positions = { + {1, 1, 1}, + {1.01f, 1.01f, 1.01f}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2.01f, 1.01f, 1.01f}, + {2, 2, 1}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, all different leafs, only third point is moved + const float voxelSize = 0.1f; + Vec3d offset(0, 10.1, 0); + + std::vector positions = { + {1, 1, 1}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + std::vector desiredPositions(positions); + desiredPositions[2] = Vec3s(positions[2] + offset); + + std::sort(desiredPositions.begin(), desiredPositions.end()); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + OffsetFilteredDeformer deformer(offset, filter); + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + + { // four points, all different leafs, only third point is kept but not moved + const float voxelSize = 0.1f; + Vec3d offset(0, 10.1, 0); + + std::vector positions = { + {1, 1, 1}, + {1, 5.05f, 1}, + {2, 1, 1}, + {2, 2, 1}, + }; + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[2]); + + std::sort(desiredPositions.begin(), desiredPositions.end()); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + // these groups mark which points are kept + + std::vector includeGroups{"test"}; + std::vector excludeGroups; + + // these groups mark which points are moved + + std::vector moveIncludeGroups; + std::vector moveExcludeGroups{"test"}; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter moveFilter(moveIncludeGroups, moveExcludeGroups, leaf->attributeSet()); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + OffsetFilteredDeformer deformer(offset, moveFilter); + movePoints(*points, deformer, filter); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } +} + + +namespace { + +// Custom Deformer with reset and apply counters +struct CustomDeformer +{ + using LeafT = PointDataGrid::TreeType::LeafNodeType; + + CustomDeformer(const openvdb::Vec3d& offset, + tbb::atomic& resetCalls, + tbb::atomic& applyCalls) + : mOffset(offset) + , mResetCalls(resetCalls) + , mApplyCalls(applyCalls) { } + + template + void reset(const LeafT& /*leaf*/, size_t /*idx*/) + { + mResetCalls++; + } + + template + void apply(Vec3d& position, const IndexIterT&) const + { + // ensure reset has been called at least once + if (mResetCalls > 0) { + position += mOffset; + } + mApplyCalls++; + } + + const openvdb::Vec3d mOffset; + tbb::atomic& mResetCalls; + tbb::atomic& mApplyCalls; +}; // struct CustomDeformer + +// Custom Deformer that always returns the position supplied in the constructor +struct StaticDeformer +{ + StaticDeformer(const openvdb::Vec3d& position) + : mPosition(position) { } + + template + void reset(const LeafT& /*leaf*/, size_t /*idx*/) { } + + template + void apply(Vec3d& position, const IndexIterT&) const + { + position = mPosition; + } + + const openvdb::Vec3d mPosition; +}; // struct StaticDeformer + +} // namespace + +void +TestPointMove::testCustomDeformer() +{ + { // four points, some same leaf, some different, custom deformer + const float voxelSize = 1.0f; + Vec3d offset(4.5,3.2,1.85); + + std::vector positions = { + {5, 2, 3}, + {2, 4, 1}, + {50, 5, 1}, + {3, 20, 1}, + }; + + std::vector desiredPositions = applyOffset(positions, offset); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + PointDataGrid::Ptr cachedPoints = points->deepCopy(); + + const int leafCount = points->tree().leafCount(); + const int pointCount = int(positions.size()); + + tbb::atomic resetCalls, applyCalls; + resetCalls = 0; + applyCalls = 0; + + // this deformer applies an offset and tracks the number of calls + + CustomDeformer deformer(offset, resetCalls, applyCalls); + + movePoints(*points, deformer); + + CPPUNIT_ASSERT(2*leafCount == resetCalls); + CPPUNIT_ASSERT(2*pointCount == applyCalls); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + + // use CachedDeformer + + resetCalls = 0; + applyCalls = 0; + + CachedDeformer::Cache cache; + CachedDeformer cachedDeformer(cache); + NullFilter filter; + cachedDeformer.evaluate(*cachedPoints, deformer, filter); + + movePoints(*cachedPoints, cachedDeformer); + + CPPUNIT_ASSERT(leafCount == resetCalls); + CPPUNIT_ASSERT(pointCount == applyCalls); + + std::vector cachedPositions = gridToPositions(cachedPoints); + + ASSERT_APPROX_EQUAL(desiredPositions, cachedPositions, __LINE__); + } + + { + { // four points, some same leaf, some different, static deformer + const float voxelSize = 1.0f; + Vec3d newPosition(15.2,18.3,-100.9); + + std::vector positions = { + {5, 2, 3}, + {2, 4, 1}, + {50, 5, 1}, + {3, 20, 1}, + }; + + std::vector desiredPositions(positions.size(), newPosition); + + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + StaticDeformer deformer(newPosition); + + movePoints(*points, deformer); + + std::vector actualPositions = gridToPositions(points); + + ASSERT_APPROX_EQUAL(desiredPositions, actualPositions, __LINE__); + } + } +} + + +namespace { + +// Custom deformer that stores a map of current positions to new positions +struct AssignDeformer +{ + AssignDeformer(const std::map& _values) + : values(_values) { } + + template + void reset(const LeafT&, size_t /*idx*/) { } + + template + void apply(Vec3d& position, const IndexIterT&) const + { + position = values.at(position); + } + + std::map values; +}; // struct AssignDeformer + +} + + +void +TestPointMove::testPointData() +{ + // four points, some same leaf, some different + // spatial order is (1, 0, 3, 2) + + const float voxelSize = 1.0f; + std::vector positions = { + {5, 2, 3}, + {2, 4, 1}, + {50, 5, 1}, + {3, 20, 1}, + }; + + // simple reversing deformer + + std::map remap; + remap.insert({positions[0], positions[3]}); + remap.insert({positions[1], positions[2]}); + remap.insert({positions[2], positions[1]}); + remap.insert({positions[3], positions[0]}); + + AssignDeformer deformer(remap); + + { // reversing point positions results in the same iteration order due to spatial organisation + PointDataGrid::Ptr points = positionsToGrid(positions, voxelSize); + + std::vector initialPositions = gridToPositions(points, /*sort=*/false); + + std::vector includeGroups; + std::vector excludeGroups; + + movePoints(*points, deformer); + + std::vector finalPositions1 = gridToPositions(points, /*sort=*/false); + + ASSERT_APPROX_EQUAL(initialPositions, finalPositions1, __LINE__); + + // now we delete the third point while sorting, using the test group + + excludeGroups.push_back("test"); + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter filter(includeGroups, excludeGroups, leaf->attributeSet()); + movePoints(*points, deformer, filter); + + std::vector desiredPositions; + desiredPositions.emplace_back(positions[0]); + desiredPositions.emplace_back(positions[1]); + desiredPositions.emplace_back(positions[3]); + + std::vector finalPositions2 = gridToPositions(points, /*sort=*/false); + + std::sort(desiredPositions.begin(), desiredPositions.end()); + std::sort(finalPositions2.begin(), finalPositions2.end()); + + ASSERT_APPROX_EQUAL(desiredPositions, finalPositions2, __LINE__); + } + + { // additional point data - integer "id", float "pscale", "odd" and "even" groups + + std::vector id; + id.push_back(0); + id.push_back(1); + id.push_back(2); + id.push_back(3); + + std::vector radius; + radius.push_back(0.1f); + radius.push_back(0.15f); + radius.push_back(0.2f); + radius.push_back(0.5f); + + // manually construct point data grid instead of using positionsToGrid() + + const PointAttributeVector pointList(positions); + + openvdb::math::Transform::Ptr transform( + openvdb::math::Transform::createLinearTransform(voxelSize)); + + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + auto idAttributeType = + openvdb::points::TypedAttributeArray::attributeType(); + openvdb::points::appendAttribute(points->tree(), "id", idAttributeType); + + // create a wrapper around the id vector + openvdb::points::PointAttributeVector idWrapper(id); + + openvdb::points::populateAttribute>( + points->tree(), pointIndexGrid->tree(), "id", idWrapper); + + // use fixed-point codec for radius + // note that this attribute type is not registered by default so needs to be + // explicitly registered. + using Codec = openvdb::points::FixedPointCodec; + openvdb::points::TypedAttributeArray::registerType(); + auto radiusAttributeType = + openvdb::points::TypedAttributeArray::attributeType(); + openvdb::points::appendAttribute(points->tree(), "pscale", radiusAttributeType); + + // create a wrapper around the radius vector + openvdb::points::PointAttributeVector radiusWrapper(radius); + + openvdb::points::populateAttribute>( + points->tree(), pointIndexGrid->tree(), "pscale", radiusWrapper); + + appendGroup(points->tree(), "odd"); + appendGroup(points->tree(), "even"); + appendGroup(points->tree(), "nonzero"); + + std::vector oddGroups(positions.size(), 0); + oddGroups[1] = 1; + oddGroups[3] = 1; + std::vector evenGroups(positions.size(), 0); + evenGroups[0] = 1; + evenGroups[2] = 1; + std::vector nonZeroGroups(positions.size(), 1); + nonZeroGroups[0] = 0; + + setGroup(points->tree(), pointIndexGrid->tree(), evenGroups, "even"); + setGroup(points->tree(), pointIndexGrid->tree(), oddGroups, "odd"); + setGroup(points->tree(), pointIndexGrid->tree(), nonZeroGroups, "nonzero"); + + movePoints(*points, deformer); + + // extract data + + std::vector id2; + std::vector radius2; + std::vector oddGroups2; + std::vector evenGroups2; + std::vector nonZeroGroups2; + + for (auto leaf = points->tree().cbeginLeaf(); leaf; ++leaf) { + + AttributeHandle idHandle(leaf->constAttributeArray("id")); + AttributeHandle pscaleHandle(leaf->constAttributeArray("pscale")); + GroupHandle oddHandle(leaf->groupHandle("odd")); + GroupHandle evenHandle(leaf->groupHandle("even")); + GroupHandle nonZeroHandle(leaf->groupHandle("nonzero")); + + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + id2.push_back(idHandle.get(*iter)); + radius2.push_back(pscaleHandle.get(*iter)); + oddGroups2.push_back(oddHandle.get(*iter) ? 1 : 0); + evenGroups2.push_back(evenHandle.get(*iter) ? 1 : 0); + nonZeroGroups2.push_back(nonZeroHandle.get(*iter) ? 1 : 0); + } + } + + // new reversed order is (2, 3, 0, 1) + + CPPUNIT_ASSERT_EQUAL(2, id2[0]); + CPPUNIT_ASSERT_EQUAL(3, id2[1]); + CPPUNIT_ASSERT_EQUAL(0, id2[2]); + CPPUNIT_ASSERT_EQUAL(1, id2[3]); + + CPPUNIT_ASSERT(math::isApproxEqual(radius[0], radius2[2], 1e-3f)); + CPPUNIT_ASSERT(math::isApproxEqual(radius[1], radius2[3], 1e-3f)); + CPPUNIT_ASSERT(math::isApproxEqual(radius[2], radius2[0], 1e-3f)); + CPPUNIT_ASSERT(math::isApproxEqual(radius[3], radius2[1], 1e-3f)); + + CPPUNIT_ASSERT_EQUAL(short(0), oddGroups2[0]); + CPPUNIT_ASSERT_EQUAL(short(1), oddGroups2[1]); + CPPUNIT_ASSERT_EQUAL(short(0), oddGroups2[2]); + CPPUNIT_ASSERT_EQUAL(short(1), oddGroups2[3]); + + CPPUNIT_ASSERT_EQUAL(short(1), evenGroups2[0]); + CPPUNIT_ASSERT_EQUAL(short(0), evenGroups2[1]); + CPPUNIT_ASSERT_EQUAL(short(1), evenGroups2[2]); + CPPUNIT_ASSERT_EQUAL(short(0), evenGroups2[3]); + + CPPUNIT_ASSERT_EQUAL(short(1), nonZeroGroups2[0]); + CPPUNIT_ASSERT_EQUAL(short(1), nonZeroGroups2[1]); + CPPUNIT_ASSERT_EQUAL(short(0), nonZeroGroups2[2]); + CPPUNIT_ASSERT_EQUAL(short(1), nonZeroGroups2[3]); + } + + { // larger data set with a cached deformer and group filtering + std::vector newPositions; + const int count = 10000; + unittest_util::genPoints(count, newPositions); + + // manually construct point data grid instead of using positionsToGrid() + + const PointAttributeVector pointList(newPositions); + + openvdb::math::Transform::Ptr transform( + openvdb::math::Transform::createLinearTransform(/*voxelSize=*/0.1)); + + tools::PointIndexGrid::Ptr pointIndexGrid = + tools::createPointIndexGrid(pointList, *transform); + + PointDataGrid::Ptr points = + createPointDataGrid(*pointIndexGrid, + pointList, *transform); + + appendGroup(points->tree(), "odd"); + + std::vector oddGroups(newPositions.size(), 0); + for (size_t i = 1; i < newPositions.size(); i += 2) { + oddGroups[i] = 1; + } + + setGroup(points->tree(), pointIndexGrid->tree(), oddGroups, "odd"); + + std::vector includeGroups{"odd"}; + std::vector excludeGroups; + + auto leaf = points->tree().cbeginLeaf(); + MultiGroupFilter advectFilter(includeGroups, excludeGroups, leaf->attributeSet()); + OffsetDeformer offsetDeformer(Vec3d(0, 1, 0)); + + CachedDeformer::Cache cache; + CachedDeformer cachedDeformer(cache); + + cachedDeformer.evaluate(*points, offsetDeformer, advectFilter); + + double ySumBefore = 0.0; + double ySumAfter = 0.0; + + for (auto leaf = points->tree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle handle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + Vec3d position = handle.get(*iter) + iter.getCoord().asVec3s(); + position = transform->indexToWorld(position); + ySumBefore += position.y(); + } + } + + movePoints(*points, cachedDeformer); + + for (auto leaf = points->tree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle handle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + Vec3d position = handle.get(*iter) + iter.getCoord().asVec3s(); + position = transform->indexToWorld(position); + ySumAfter += position.y(); + } + } + + // total increase in Y should be approximately count / 2 + // (only odd points are being moved 1.0 in Y) + double increaseInY = ySumAfter - ySumBefore; + + CPPUNIT_ASSERT_DOUBLES_EQUAL(increaseInY, static_cast(count) / 2.0, + /*tolerance=*/double(0.01)); + } +} + + +void +TestPointMove::testPointOrder() +{ + struct Local + { + using GridT = points::PointDataGrid; + + static void populate(std::vector& positions, const GridT& points, + const math::Transform& transform, bool /*threaded*/) + { + auto newPoints1 = points.deepCopy(); + + points::NullDeformer nullDeformer; + points::NullFilter nullFilter; + points::movePoints(*newPoints1, transform, nullDeformer, nullFilter); + + size_t totalPoints = points::pointCount(newPoints1->tree()); + + positions.reserve(totalPoints); + + for (auto leaf = newPoints1->tree().cbeginLeaf(); leaf; ++leaf) { + AttributeHandle handle(leaf->constAttributeArray("P")); + for (auto iter = leaf->beginIndexOn(); iter; ++iter) { + positions.push_back(handle.get(*iter)); + } + } + } + }; + + auto sourceTransform = math::Transform::createLinearTransform(/*voxelSize=*/0.1); + auto targetTransform = math::Transform::createLinearTransform(/*voxelSize=*/1.0); + + auto mask = MaskGrid::create(); + mask->setTransform(sourceTransform); + mask->denseFill(CoordBBox(Coord(-20,-20,-20), Coord(20,20,20)), true); + + auto points = points::denseUniformPointScatter(*mask, /*pointsPerVoxel=*/8); + + // three copies of the points, two multi-threaded and one single-threaded + std::vector positions1; + std::vector positions2; + std::vector positions3; + + Local::populate(positions1, *points, *targetTransform, true); + Local::populate(positions2, *points, *targetTransform, true); + Local::populate(positions3, *points, *targetTransform, false); + + // verify all sequences are identical to confirm that points are ordered deterministically + + ASSERT_APPROX_EQUAL(positions1, positions2, __LINE__); + ASSERT_APPROX_EQUAL(positions1, positions3, __LINE__); +} diff --git a/openvdb/unittest/TestPointPartitioner.cc b/openvdb/unittest/TestPointPartitioner.cc new file mode 100644 index 00000000..35b8981b --- /dev/null +++ b/openvdb/unittest/TestPointPartitioner.cc @@ -0,0 +1,98 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include + + +class TestPointPartitioner: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestPointPartitioner); + CPPUNIT_TEST(testPartitioner); + CPPUNIT_TEST_SUITE_END(); + + void testPartitioner(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointPartitioner); + +//////////////////////////////////////// + +namespace { + +struct PointList { + typedef openvdb::Vec3s PosType; + + PointList(const std::vector& points) : mPoints(&points) {} + + size_t size() const { return mPoints->size(); } + + void getPos(size_t n, PosType& xyz) const { xyz = (*mPoints)[n]; } + +protected: + std::vector const * const mPoints; +}; // PointList + +} // namespace + +//////////////////////////////////////// + + +void +TestPointPartitioner::testPartitioner() +{ + const size_t pointCount = 10000; + const float voxelSize = 0.1f; + + std::vector points(pointCount, openvdb::Vec3s(0.f)); + for (size_t n = 1; n < pointCount; ++n) { + points[n].x() = points[n-1].x() + voxelSize; + } + + PointList pointList(points); + + const openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + typedef openvdb::tools::UInt32PointPartitioner PointPartitioner; + + PointPartitioner::Ptr partitioner = + PointPartitioner::create(pointList, *transform); + + CPPUNIT_ASSERT(!partitioner->empty()); + + // The default interpretation should be cell-centered. + CPPUNIT_ASSERT(partitioner->usingCellCenteredTransform()); + + const size_t expectedPageCount = pointCount / (1u << PointPartitioner::LOG2DIM); + + CPPUNIT_ASSERT_EQUAL(expectedPageCount, partitioner->size()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), partitioner->origin(0)); + + PointPartitioner::IndexIterator it = partitioner->indices(0); + + CPPUNIT_ASSERT(it.test()); + CPPUNIT_ASSERT_EQUAL(it.size(), size_t(1 << PointPartitioner::LOG2DIM)); + + PointPartitioner::IndexIterator itB = partitioner->indices(0); + + CPPUNIT_ASSERT_EQUAL(++it, ++itB); + CPPUNIT_ASSERT(it != ++itB); + + std::vector indices; + + for (it.reset(); it; ++it) { + indices.push_back(*it); + } + + CPPUNIT_ASSERT_EQUAL(it.size(), indices.size()); + + size_t idx = 0; + for (itB.reset(); itB; ++itB) { + CPPUNIT_ASSERT_EQUAL(indices[idx++], *itB); + } +} + diff --git a/openvdb/unittest/TestPointSample.cc b/openvdb/unittest/TestPointSample.cc new file mode 100644 index 00000000..fc9f37ea --- /dev/null +++ b/openvdb/unittest/TestPointSample.cc @@ -0,0 +1,551 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include "util.h" +#include +#include + +using namespace openvdb; + +class TestPointSample: public CppUnit::TestCase +{ +public: + + void setUp() override { initialize(); } + void tearDown() override { uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointSample); + CPPUNIT_TEST(testPointSample); + CPPUNIT_TEST(testPointSampleWithGroups); + + CPPUNIT_TEST_SUITE_END(); + + void testPointSample(); + void testPointSampleWithGroups(); + +}; // class TestPointSample + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointSample); + + +namespace +{ + +/// Utility function to quickly create a very simple grid (with specified value type), set a value +/// at its origin and then create and sample to an attribute +/// +template +typename points::AttributeHandle::Ptr +testAttribute(points::PointDataGrid& points, const std::string& attributeName, + const math::Transform::Ptr xform, const ValueType& val) +{ + using TreeT = typename tree::Tree4::Type; + using GridT = Grid; + + typename GridT::Ptr grid = GridT::create(); + + grid->setTransform(xform); + grid->tree().setValue(Coord(0,0,0), val); + + points::boxSample(points, *grid, attributeName); + + return(points::AttributeHandle::create( + points.tree().cbeginLeaf()->attributeArray(attributeName))); +} + +} // anonymous namespace + + +void +TestPointSample::testPointSample() +{ + using points::PointDataGrid; + using points::NullCodec; + + const float voxelSize = 0.1f; + math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize)); + + { + // check that all supported grid types can be sampled. + // This check will use very basic grids with a point at a cell-centered positions + + // create test point grid with a single point + + std::vector pointPositions{Vec3f(0.0f, 0.0f, 0.0f)}; + PointDataGrid::Ptr points = points::createPointDataGrid( + pointPositions, *transform); + + CPPUNIT_ASSERT(points); + + // bool + + points::AttributeHandle::Ptr boolHandle = + testAttribute(*points, "test_bool", transform, true); + + CPPUNIT_ASSERT(boolHandle->get(0)); + + // int16 + +#if (defined _MSC_VER) || (defined __INTEL_COMPILER) || (defined __clang__) + // GCC warns warns of narrowing conversions from int to int16_t, + // and GCC 4.8, at least, ignores the -Wconversion suppression pragma. + // So for now, skip this test if compiling with GCC. + points::AttributeHandle::Ptr int16Handle = + testAttribute(*points, "test_int16", transform, int16_t(10)); + + CPPUNIT_ASSERT_EQUAL(int16Handle->get(0), int16_t(10)); +#endif + + // int32 + + points::AttributeHandle::Ptr int32Handle = + testAttribute(*points, "test_Int32", transform, Int32(3)); + + CPPUNIT_ASSERT_EQUAL(Int32(3), int32Handle->get(0)); + + // int64 + + points::AttributeHandle::Ptr int64Handle = + testAttribute(*points, "test_Int64", transform, Int64(2)); + + CPPUNIT_ASSERT_EQUAL(Int64(2), int64Handle->get(0)); + + // double + + points::AttributeHandle::Ptr doubleHandle = + testAttribute(*points, "test_double", transform, 4.0); + + CPPUNIT_ASSERT_EQUAL(4.0, doubleHandle->get(0)); + + // Vec3i + + points::AttributeHandle::Ptr vec3iHandle = + testAttribute(*points, "test_vec3i", transform, math::Vec3i(9, 8, 7)); + + CPPUNIT_ASSERT_EQUAL(vec3iHandle->get(0), math::Vec3i(9, 8, 7)); + + // Vec3f + + points::AttributeHandle::Ptr vec3fHandle = + testAttribute(*points, "test_vec3f", transform, Vec3f(111.0f, 222.0f, 333.0f)); + + CPPUNIT_ASSERT_EQUAL(vec3fHandle->get(0), Vec3f(111.0f, 222.0f, 333.0f)); + + // Vec3d + + points::AttributeHandle::Ptr vec3dHandle = + testAttribute(*points, "test_vec3d", transform, Vec3d(1.0, 2.0, 3.0)); + + CPPUNIT_ASSERT(math::isApproxEqual(Vec3d(1.0, 2.0, 3.0), vec3dHandle->get(0))); + } + + { + // empty source grid + + std::vector pointPositions{Vec3f(0.0f, 0.0f, 0.0f)}; + + PointDataGrid::Ptr points = points::createPointDataGrid( + pointPositions, *transform); + + points::appendAttribute(points->tree(), "test"); + + VectorGrid::Ptr testGrid = VectorGrid::create(); + + points::boxSample(*points, *testGrid, "test"); + + points::AttributeHandle::Ptr handle = + points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("test")); + + CPPUNIT_ASSERT(math::isApproxEqual(Vec3f(0.0f, 0.0f, 0.0f), handle->get(0))); + } + + { + // empty point grid + + std::vector pointPositions; + PointDataGrid::Ptr points = points::createPointDataGrid( + pointPositions, *transform); + + CPPUNIT_ASSERT(points); + + FloatGrid::Ptr testGrid = FloatGrid::create(1.0); + + points::appendAttribute(points->tree(), "test"); + + CPPUNIT_ASSERT_NO_THROW(points::boxSample(*points, *testGrid, "test")); + } + + { + // exception if one tries to sample to "P" attribute + + std::vector pointPositions{Vec3f(0.0f, 0.0f, 0.0f)}; + + PointDataGrid::Ptr points = points::createPointDataGrid( + pointPositions, *transform); + + CPPUNIT_ASSERT(points); + + FloatGrid::Ptr testGrid = FloatGrid::create(1.0); + + CPPUNIT_ASSERT_THROW_MESSAGE("Cannot sample onto the \"P\" attribute", + points::boxSample(*points, *testGrid, "P"), RuntimeError); + + // name of the grid is used if no attribute is provided + + testGrid->setName("test_grid"); + + CPPUNIT_ASSERT(!points->tree().cbeginLeaf()->hasAttribute("test_grid")); + + points::boxSample(*points, *testGrid); + + CPPUNIT_ASSERT(points->tree().cbeginLeaf()->hasAttribute("test_grid")); + + // name fails if the grid is called "P" + + testGrid->setName("P"); + + CPPUNIT_ASSERT_THROW_MESSAGE("Cannot sample onto the \"P\" attribute", + points::boxSample(*points, *testGrid), RuntimeError); + } + + { + // test non-cell centered points with scalar data and matching transform + // use various sampling orders + + std::vector pointPositions{Vec3f(0.03f, 0.0f, 0.0f), Vec3f(0.11f, 0.03f, 0.0f)}; + + PointDataGrid::Ptr points = points::createPointDataGrid( + pointPositions, *transform); + + CPPUNIT_ASSERT(points); + + FloatGrid::Ptr testGrid = FloatGrid::create(); + + testGrid->setTransform(transform); + testGrid->tree().setValue(Coord(-1,0,0), -1.0f); + testGrid->tree().setValue(Coord(0,0,0), 1.0f); + testGrid->tree().setValue(Coord(1,0,0), 2.0f); + testGrid->tree().setValue(Coord(2,0,0), 4.0f); + testGrid->tree().setValue(Coord(0,1,0), 3.0f); + + points::appendAttribute(points->tree(), "test"); + points::AttributeHandle::Ptr handle = + points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("test")); + + CPPUNIT_ASSERT(handle.get()); + + FloatGrid::ConstAccessor testGridAccessor = testGrid->getConstAccessor(); + + // check nearest-neighbour sampling + + points::pointSample(*points, *testGrid, "test"); + + float expected = tools::PointSampler::sample(testGridAccessor, Vec3f(0.3f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(0), 1e-6); + + expected = tools::PointSampler::sample(testGridAccessor, Vec3f(1.1f, 0.3f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(1), 1e-6); + + // check tri-linear sampling + + points::boxSample(*points, *testGrid, "test"); + + expected = tools::BoxSampler::sample(testGridAccessor, Vec3f(0.3f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(0), 1e-6); + + expected = tools::BoxSampler::sample(testGridAccessor, Vec3f(1.1f, 0.3f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(1), 1e-6); + + // check tri-quadratic sampling + + points::quadraticSample(*points, *testGrid, "test"); + + expected = tools::QuadraticSampler::sample(testGridAccessor, Vec3f(0.3f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(0), 1e-6); + + expected = tools::QuadraticSampler::sample(testGridAccessor, Vec3f(1.1f, 0.3f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(1), 1e-6); + } + + { + // staggered grid and mismatching transforms + + std::vector pointPositions{Vec3f(0.03f, 0.0f, 0.0f), Vec3f(0.0f, 0.03f, 0.0f), + Vec3f(0.0f, 0.0f, 0.03f),}; + + PointDataGrid::Ptr points = + points::createPointDataGrid(pointPositions, + *transform); + + CPPUNIT_ASSERT(points); + + VectorGrid::Ptr testGrid = VectorGrid::create(); + + testGrid->setGridClass(GRID_STAGGERED); + testGrid->tree().setValue(Coord(0,0,0), Vec3f(1.0f, 2.0f, 3.0f)); + testGrid->tree().setValue(Coord(0,1,0), Vec3f(1.5f, 2.5f, 3.5f)); + testGrid->tree().setValue(Coord(0,0,1), Vec3f(2.0f, 3.0f, 4.0)); + + points::appendAttribute(points->tree(), "test"); + + points::AttributeHandle::Ptr handle = + points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("test")); + + CPPUNIT_ASSERT(handle.get()); + + Vec3fGrid::ConstAccessor testGridAccessor = testGrid->getConstAccessor(); + + // nearest-neighbour staggered sampling + + points::pointSample(*points, *testGrid, "test"); + + Vec3f expected = tools::StaggeredPointSampler::sample(testGridAccessor, + Vec3f(0.03f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(0))); + + expected = tools::StaggeredPointSampler::sample(testGridAccessor, Vec3f(0.0f, 0.03f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(1))); + + // tri-linear staggered sampling + + points::boxSample(*points, *testGrid, "test"); + + expected = tools::StaggeredBoxSampler::sample(testGridAccessor, + Vec3f(0.03f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(0))); + + expected = tools::StaggeredBoxSampler::sample(testGridAccessor, Vec3f(0.0f, 0.03f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(1))); + + // tri-quadratic staggered sampling + + points::quadraticSample(*points, *testGrid, "test"); + + expected = tools::StaggeredQuadraticSampler::sample(testGridAccessor, + Vec3f(0.03f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(0))); + + expected = tools::StaggeredQuadraticSampler::sample(testGridAccessor, + Vec3f(0.0f, 0.03f, 0.0f)); + + CPPUNIT_ASSERT(math::isApproxEqual(expected, handle->get(1))); + } + + { + // value type of grid and attribute type don't match + + std::vector pointPositions{Vec3f(0.3f, 0.0f, 0.0f)}; + + math::Transform::Ptr transform2(math::Transform::createLinearTransform(1.0f)); + PointDataGrid::Ptr points = + points::createPointDataGrid(pointPositions, + *transform2); + + CPPUNIT_ASSERT(points); + + FloatGrid::Ptr testFloatGrid = FloatGrid::create(); + + testFloatGrid->setTransform(transform2); + testFloatGrid->tree().setValue(Coord(0,0,0), 1.1f); + testFloatGrid->tree().setValue(Coord(1,0,0), 2.8f); + testFloatGrid->tree().setValue(Coord(0,1,0), 3.4f); + + points::appendAttribute(points->tree(), "testint"); + points::boxSample(*points, *testFloatGrid, "testint"); + points::AttributeHandle::Ptr handle = points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("testint")); + + CPPUNIT_ASSERT(handle.get()); + + FloatGrid::ConstAccessor testFloatGridAccessor = testFloatGrid->getConstAccessor(); + + // check against box sampler values + + const float sampledValue = tools::BoxSampler::sample(testFloatGridAccessor, + Vec3f(0.3f, 0.0f, 0.0f)); + const int expected = static_cast(math::Round(sampledValue)); + + CPPUNIT_ASSERT_EQUAL(expected, handle->get(0)); + + // check mismatching grid type using vector types + + Vec3fGrid::Ptr testVec3fGrid = Vec3fGrid::create(); + + testVec3fGrid->setTransform(transform2); + testVec3fGrid->tree().setValue(Coord(0,0,0), Vec3f(1.0f, 2.0f, 3.0f)); + testVec3fGrid->tree().setValue(Coord(1,0,0), Vec3f(1.5f, 2.5f, 3.5f)); + testVec3fGrid->tree().setValue(Coord(0,1,0), Vec3f(2.0f, 3.0f, 4.0f)); + + points::appendAttribute(points->tree(), "testvec3d"); + points::boxSample(*points, *testVec3fGrid, "testvec3d"); + points::AttributeHandle::Ptr handle2 = points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("testvec3d")); + + Vec3fGrid::ConstAccessor testVec3fGridAccessor = testVec3fGrid->getConstAccessor(); + const Vec3d expected2 = static_cast(tools::BoxSampler::sample(testVec3fGridAccessor, + Vec3f(0.3f, 0.0f, 0.0f))); + + CPPUNIT_ASSERT(math::isExactlyEqual(expected2, handle2->get(0))); + + // check implicit casting of types for sampling using sampleGrid() + + points::appendAttribute(points->tree(), "testvec3d2"); + points::sampleGrid(/*linear*/1, *points, *testVec3fGrid, "testvec3d2"); + points::AttributeHandle::Ptr handle3 = points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("testvec3d2")); + + CPPUNIT_ASSERT(math::isExactlyEqual(expected2, handle3->get(0))); + + // check explicit casting of types for sampling using sampleGrid() + + points::sampleGrid( + /*linear*/1, *points, *testVec3fGrid, "testvec3d3"); + points::AttributeHandle::Ptr handle4 = points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("testvec3d3")); + + CPPUNIT_ASSERT(math::isExactlyEqual(expected2, handle4->get(0))); + + // check invalid casting of types + + points::appendAttribute(points->tree(), "testfloat"); + + // The following is a substitute for CPPUNIT_ASSERT_THROW_MESSAGE(), + // which generates a compiler warning when the expected exception type + // is std::exception. + try { + points::boxSample(*points, *testVec3fGrid, "testfloat"); + CPPUNIT_FAIL("expected exception not thrown:" + " cannot sample a vec3s grid on to a float attribute"); + } catch (std::exception&) { + } catch (...) { + CPPUNIT_FAIL("expected std::exception or derived"); + } + + // check invalid existing attribute type (Vec4s attribute) + + points::TypedAttributeArray::registerType(); + points::appendAttribute(points->tree(), "testv4f"); + CPPUNIT_ASSERT_THROW(points::boxSample(*points, *testVec3fGrid, "testv4f"), TypeError); + } + + { // sample a non-standard grid type (a Vec4 grid) + using Vec4STree = tree::Tree4::Type; + using Vec4SGrid = Grid; + Vec4SGrid::registerGrid(); + points::TypedAttributeArray::registerType(); + + std::vector pointPositions{Vec3f(0.3f, 0.0f, 0.0f)}; + + math::Transform::Ptr transform2(math::Transform::createLinearTransform(1.0f)); + PointDataGrid::Ptr points = + points::createPointDataGrid(pointPositions, + *transform2); + + auto testVec4fGrid = Vec4SGrid::create(); + testVec4fGrid->setTransform(transform2); + testVec4fGrid->tree().setValue(Coord(0,0,0), Vec4s(1.0f, 2.0f, 3.0f, 4.0f)); + testVec4fGrid->tree().setValue(Coord(1,0,0), Vec4s(1.5f, 2.5f, 3.5f, 4.5f)); + testVec4fGrid->tree().setValue(Coord(0,1,0), Vec4s(2.0f, 3.0f, 4.0f, 5.0f)); + + points::boxSample(*points, *testVec4fGrid, "testvec4f"); + points::AttributeHandle::Ptr handle2 = points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("testvec4f")); + + Vec4SGrid::ConstAccessor testVec4fGridAccessor = testVec4fGrid->getConstAccessor(); + const Vec4s expected2 = static_cast(tools::BoxSampler::sample(testVec4fGridAccessor, + Vec3f(0.3f, 0.0f, 0.0f))); + + CPPUNIT_ASSERT(math::isExactlyEqual(expected2, handle2->get(0))); + } +} + +void +TestPointSample::testPointSampleWithGroups() +{ + using points::PointDataGrid; + + std::vector pointPositions{Vec3f(0.03f, 0.0f, 0.0f), Vec3f(0.0f, 0.03f, 0.0f), + Vec3f(0.0f, 0.0f, 0.0f)}; + + math::Transform::Ptr transform(math::Transform::createLinearTransform(0.1f)); + PointDataGrid::Ptr points = points::createPointDataGrid(pointPositions, *transform); + + CPPUNIT_ASSERT(points); + + DoubleGrid::Ptr testGrid = DoubleGrid::create(); + + testGrid->setTransform(transform); + testGrid->tree().setValue(Coord(0,0,0), 1.0); + testGrid->tree().setValue(Coord(1,0,0), 2.0); + testGrid->tree().setValue(Coord(0,1,0), 3.0); + + points::appendGroup(points->tree(), "group1"); + + auto leaf = points->tree().beginLeaf(); + + points::GroupWriteHandle group1Handle = leaf->groupWriteHandle("group1"); + + group1Handle.set(0, true); + group1Handle.set(1, false); + group1Handle.set(2, true); + + points::appendAttribute(points->tree(), "test_include"); + + std::vector includeGroups({"group1"}); + std::vector excludeGroups; + points::MultiGroupFilter filter1(includeGroups, excludeGroups, leaf->attributeSet()); + points::boxSample(*points, *testGrid, "test_include", filter1); + + points::AttributeHandle::Ptr handle = + points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("test_include")); + + DoubleGrid::ConstAccessor testGridAccessor = testGrid->getConstAccessor(); + + double expected = tools::BoxSampler::sample(testGridAccessor, Vec3f(0.3f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(0), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, handle->get(1), 1e-6); + + expected = tools::BoxSampler::sample(testGridAccessor, Vec3f(0.0f, 0.0f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle->get(2), 1e-6); + + points::appendAttribute(points->tree(), "test_exclude"); + + // test with group treated as "exclusion" group + + points::MultiGroupFilter filter2(excludeGroups, includeGroups, leaf->attributeSet()); + points::boxSample(*points, *testGrid, "test_exclude", filter2); + + points::AttributeHandle::Ptr handle2 = + points::AttributeHandle::create( + points->tree().cbeginLeaf()->attributeArray("test_exclude")); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, handle2->get(0), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, handle2->get(2), 1e-6); + + expected = tools::BoxSampler::sample(testGridAccessor, Vec3f(0.0f, 0.3f, 0.0f)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, handle2->get(1), 1e-6); +} diff --git a/openvdb/unittest/TestPointScatter.cc b/openvdb/unittest/TestPointScatter.cc new file mode 100644 index 00000000..2787934a --- /dev/null +++ b/openvdb/unittest/TestPointScatter.cc @@ -0,0 +1,703 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include + +#include + +#include +#include +#include + +#include +#include + +using namespace openvdb; +using namespace openvdb::points; + +class TestPointScatter: public CppUnit::TestCase +{ +public: + + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestPointScatter); + CPPUNIT_TEST(testUniformPointScatter); + CPPUNIT_TEST(testDenseUniformPointScatter); + CPPUNIT_TEST(testNonUniformPointScatter); + CPPUNIT_TEST_SUITE_END(); + + void testUniformPointScatter(); + void testDenseUniformPointScatter(); + void testNonUniformPointScatter(); + +}; // class TestPointScatter + + +void +TestPointScatter::testUniformPointScatter() +{ + const Index64 total = 50; + const math::CoordBBox boxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves + + // Test the free function for all default grid types - 50 points across 27 voxels + // ensures all voxels receive points + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + DoubleGrid grid; + grid.sparseFill(boxBounds, 0.0, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + FloatGrid grid; + grid.sparseFill(boxBounds, 0.0f, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + Int32Grid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + Int64Grid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + MaskGrid grid; + grid.sparseFill(boxBounds, /*maskBuffer*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + StringGrid grid; + grid.sparseFill(boxBounds, "", /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + Vec3DGrid grid; + grid.sparseFill(boxBounds, Vec3d(), /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + Vec3IGrid grid; + grid.sparseFill(boxBounds, Vec3i(), /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + Vec3SGrid grid; + grid.sparseFill(boxBounds, Vec3f(), /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + { + PointDataGrid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::uniformPointScatter(grid, total); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + } + + // Test 0 produces empty grid + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::uniformPointScatter(grid, 0); + CPPUNIT_ASSERT(points->empty()); + } + + // Test single point scatter and topology + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::uniformPointScatter(grid, 1); + CPPUNIT_ASSERT_EQUAL(Index32(1), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), pointCount(points->tree())); + } + + // Test a grid containing tiles scatters correctly + + BoolGrid grid; + grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); + + const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; + + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES), grid.activeVoxelCount()); + + auto points = points::uniformPointScatter(grid, total); + +#ifndef OPENVDB_2_ABI_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(Index64(0), points->tree().activeTileCount()); +#endif + CPPUNIT_ASSERT_EQUAL(Index32(1), points->tree().leafCount()); + CPPUNIT_ASSERT(Index64(NUM_VALUES) > points->tree().activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + + // Explicitly check P attribute + + const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + const auto* array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + + using PositionArrayT = TypedAttributeArray; + CPPUNIT_ASSERT(array->isType()); + + size_t size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(total), size); + + AttributeHandle::Ptr pHandle = + AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.5f); + CPPUNIT_ASSERT(P[0] <= 0.5f); + CPPUNIT_ASSERT(P[1] >=-0.5f); + CPPUNIT_ASSERT(P[1] <= 0.5f); + CPPUNIT_ASSERT(P[2] >=-0.5f); + CPPUNIT_ASSERT(P[2] <= 0.5f); + } + + // Test the rng seed + + const Vec3f firstPosition = pHandle->get(0); + points = points::uniformPointScatter(grid, total, /*seed*/1); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(total), size); + pHandle = AttributeHandle::create(*array); + + const Vec3f secondPosition = pHandle->get(0); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); + + // Test spread + + points = points::uniformPointScatter(grid, total, /*seed*/1, /*spread*/0.2f); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(total), size); + + pHandle = AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.2f); + CPPUNIT_ASSERT(P[0] <= 0.2f); + CPPUNIT_ASSERT(P[1] >=-0.2f); + CPPUNIT_ASSERT(P[1] <= 0.2f); + CPPUNIT_ASSERT(P[2] >=-0.2f); + CPPUNIT_ASSERT(P[2] <= 0.2f); + } + + // Test mt11213b + + using mt11213b = std::mersenne_twister_engine; + + points = points::uniformPointScatter(grid, total); + + CPPUNIT_ASSERT_EQUAL(Index32(1), points->tree().leafCount()); + CPPUNIT_ASSERT(Index64(NUM_VALUES) > points->tree().activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(total, pointCount(points->tree())); + + // Test no remainder - grid contains one tile, scatter NUM_VALUES points + + points = points::uniformPointScatter(grid, Index64(NUM_VALUES)); + + CPPUNIT_ASSERT_EQUAL(Index32(1), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES), pointCount(points->tree())); + + const auto* const leaf = points->tree().probeConstLeaf(math::Coord(0)); + CPPUNIT_ASSERT(leaf); + CPPUNIT_ASSERT(leaf->isDense()); + + const auto* const data = leaf->buffer().data(); + CPPUNIT_ASSERT_EQUAL(Index32(1), Index32(data[1] - data[0])); + + for (size_t i = 1; i < NUM_VALUES; ++i) { + const Index32 offset = data[i] - data[i - 1]; + CPPUNIT_ASSERT_EQUAL(Index32(1), offset); + } +} + +void +TestPointScatter::testDenseUniformPointScatter() +{ + const Index32 pointsPerVoxel = 8; + const math::CoordBBox boxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves + + // Test the free function for all default grid types + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + DoubleGrid grid; + grid.sparseFill(boxBounds, 0.0, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + FloatGrid grid; + grid.sparseFill(boxBounds, 0.0f, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Int32Grid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Int64Grid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + MaskGrid grid; + grid.sparseFill(boxBounds, /*maskBuffer*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + StringGrid grid; + grid.sparseFill(boxBounds, "", /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Vec3DGrid grid; + grid.sparseFill(boxBounds, Vec3d(), /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Vec3IGrid grid; + grid.sparseFill(boxBounds, Vec3i(), /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Vec3SGrid grid; + grid.sparseFill(boxBounds, Vec3f(), /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + PointDataGrid grid; + grid.sparseFill(boxBounds, 0, /*active*/true); + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + + // Test 0 produces empty grid + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::denseUniformPointScatter(grid, 0.0f); + CPPUNIT_ASSERT(points->empty()); + } + + // Test topology between 0 - 1 + + { + BoolGrid grid; + grid.sparseFill(boxBounds, false, /*active*/true); + auto points = points::denseUniformPointScatter(grid, 0.8f); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + // Note that a value of 22 is precomputed as the number of active + // voxels/points produced by a value of 0.8 + CPPUNIT_ASSERT_EQUAL(Index64(22), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(22), pointCount(points->tree())); + + // Test below 0 throws + + CPPUNIT_ASSERT_THROW(points::denseUniformPointScatter(grid, -0.1f), openvdb::ValueError); + } + + // Test a grid containing tiles scatters correctly + + BoolGrid grid; + grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); + grid.tree().setValueOn(math::Coord(8,0,0)); // add another leaf + + const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; + + CPPUNIT_ASSERT_EQUAL(Index32(1), grid.tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), grid.activeVoxelCount()); + + auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); + + const Index64 expectedCount = Index64(pointsPerVoxel * (NUM_VALUES + 1)); + +#ifndef OPENVDB_2_ABI_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(Index64(0), points->tree().activeTileCount()); +#endif + CPPUNIT_ASSERT_EQUAL(Index32(2), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(expectedCount, pointCount(points->tree())); + + // Explicitly check P attribute + + const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + const auto* array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + + using PositionArrayT = TypedAttributeArray; + CPPUNIT_ASSERT(array->isType()); + + size_t size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + + AttributeHandle::Ptr pHandle = + AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.5f); + CPPUNIT_ASSERT(P[0] <= 0.5f); + CPPUNIT_ASSERT(P[1] >=-0.5f); + CPPUNIT_ASSERT(P[1] <= 0.5f); + CPPUNIT_ASSERT(P[2] >=-0.5f); + CPPUNIT_ASSERT(P[2] <= 0.5f); + } + + // Test the rng seed + + const Vec3f firstPosition = pHandle->get(0); + points = points::denseUniformPointScatter(grid, pointsPerVoxel, /*seed*/1); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + pHandle = AttributeHandle::create(*array); + + const Vec3f secondPosition = pHandle->get(0); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); + + // Test spread + + points = points::denseUniformPointScatter(grid, pointsPerVoxel, /*seed*/1, /*spread*/0.2f); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + + pHandle = AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.2f); + CPPUNIT_ASSERT(P[0] <= 0.2f); + CPPUNIT_ASSERT(P[1] >=-0.2f); + CPPUNIT_ASSERT(P[1] <= 0.2f); + CPPUNIT_ASSERT(P[2] >=-0.2f); + CPPUNIT_ASSERT(P[2] <= 0.2f); + } + + // Test mt11213b + + using mt11213b = std::mersenne_twister_engine; + + points = points::denseUniformPointScatter(grid, pointsPerVoxel); + + CPPUNIT_ASSERT_EQUAL(Index32(2), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(expectedCount, pointCount(points->tree())); +} + +void +TestPointScatter::testNonUniformPointScatter() +{ + const Index32 pointsPerVoxel = 8; + const math::CoordBBox totalBoxBounds(math::Coord(-2), math::Coord(2)); // 125 voxels across 8 leaves + const math::CoordBBox activeBoxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves + + // Test the free function for all default scalar grid types + + { + BoolGrid grid; + grid.sparseFill(totalBoxBounds, false, /*active*/true); + grid.sparseFill(activeBoxBounds, true, /*active*/true); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + DoubleGrid grid; + grid.sparseFill(totalBoxBounds, 0.0, /*active*/true); + grid.sparseFill(activeBoxBounds, 1.0, /*active*/true); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + FloatGrid grid; + grid.sparseFill(totalBoxBounds, 0.0f, /*active*/true); + grid.sparseFill(activeBoxBounds, 1.0f, /*active*/true); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Int32Grid grid; + grid.sparseFill(totalBoxBounds, 0, /*active*/true); + grid.sparseFill(activeBoxBounds, 1, /*active*/true); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + Int64Grid grid; + grid.sparseFill(totalBoxBounds, 0, /*active*/true); + grid.sparseFill(activeBoxBounds, 1, /*active*/true); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + { + MaskGrid grid; + grid.sparseFill(totalBoxBounds, /*maskBuffer*/0); + grid.sparseFill(activeBoxBounds, /*maskBuffer*/1); + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + CPPUNIT_ASSERT_EQUAL(Index32(8), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(27), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 27), pointCount(points->tree())); + } + + BoolGrid grid; + + // Test below 0 throws + + CPPUNIT_ASSERT_THROW(points::nonUniformPointScatter(grid, -0.1f), openvdb::ValueError); + + // Test a grid containing tiles scatters correctly + + grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); + grid.tree().setValueOn(math::Coord(8,0,0), true); // add another leaf + + const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; + + CPPUNIT_ASSERT_EQUAL(Index32(1), grid.tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), grid.activeVoxelCount()); + + auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); + + const Index64 expectedCount = Index64(pointsPerVoxel * (NUM_VALUES + 1)); + +#ifndef OPENVDB_2_ABI_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(Index64(0), points->tree().activeTileCount()); +#endif + CPPUNIT_ASSERT_EQUAL(Index32(2), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(expectedCount, pointCount(points->tree())); + + // Explicitly check P attribute + + const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + const auto* array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + + using PositionArrayT = TypedAttributeArray; + CPPUNIT_ASSERT(array->isType()); + + size_t size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + + AttributeHandle::Ptr pHandle = + AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.5f); + CPPUNIT_ASSERT(P[0] <= 0.5f); + CPPUNIT_ASSERT(P[1] >=-0.5f); + CPPUNIT_ASSERT(P[1] <= 0.5f); + CPPUNIT_ASSERT(P[2] >=-0.5f); + CPPUNIT_ASSERT(P[2] <= 0.5f); + } + + // Test the rng seed + + const Vec3f firstPosition = pHandle->get(0); + points = points::nonUniformPointScatter(grid, pointsPerVoxel, /*seed*/1); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + pHandle = AttributeHandle::create(*array); + + const Vec3f secondPosition = pHandle->get(0); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); + CPPUNIT_ASSERT(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); + + // Test spread + + points = points::nonUniformPointScatter(grid, pointsPerVoxel, /*seed*/1, /*spread*/0.2f); + + attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); + CPPUNIT_ASSERT_EQUAL(size_t(1), attributeSet->size()); + array = attributeSet->getConst(0); + CPPUNIT_ASSERT(array); + CPPUNIT_ASSERT(array->isType()); + + size = array->size(); + CPPUNIT_ASSERT_EQUAL(size_t(pointsPerVoxel * NUM_VALUES), size); + + pHandle = AttributeHandle::create(*array); + for (size_t i = 0; i < size; ++i) { + const Vec3f P = pHandle->get(Index(i)); + CPPUNIT_ASSERT(P[0] >=-0.2f); + CPPUNIT_ASSERT(P[0] <= 0.2f); + CPPUNIT_ASSERT(P[1] >=-0.2f); + CPPUNIT_ASSERT(P[1] <= 0.2f); + CPPUNIT_ASSERT(P[2] >=-0.2f); + CPPUNIT_ASSERT(P[2] <= 0.2f); + } + + // Test varying counts + + Int32Grid countGrid; + + // tets negative values equate to 0 + countGrid.tree().setValueOn(Coord(0), -1); + for (int i = 1; i < 8; ++i) { + countGrid.tree().setValueOn(Coord(i), i); + } + + points = points::nonUniformPointScatter(countGrid, pointsPerVoxel); + + CPPUNIT_ASSERT_EQUAL(Index32(1), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(7), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(pointsPerVoxel * 28), pointCount(points->tree())); + + for (int i = 1; i < 8; ++i) { + CPPUNIT_ASSERT(points->tree().isValueOn(Coord(i))); + auto& value = points->tree().getValue(Coord(i)); + Index32 expected(0); + for (Index32 j = i; j > 0; --j) expected += j; + CPPUNIT_ASSERT_EQUAL(Index32(expected * pointsPerVoxel), Index32(value)); + } + + // Test mt11213b + + using mt11213b = std::mersenne_twister_engine; + + points = points::nonUniformPointScatter(grid, pointsPerVoxel); + + CPPUNIT_ASSERT_EQUAL(Index32(2), points->tree().leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(NUM_VALUES + 1), points->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(expectedCount, pointCount(points->tree())); +} + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointScatter); diff --git a/openvdb/unittest/TestPointsToMask.cc b/openvdb/unittest/TestPointsToMask.cc new file mode 100644 index 00000000..61e6ccf9 --- /dev/null +++ b/openvdb/unittest/TestPointsToMask.cc @@ -0,0 +1,172 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include // for math::Random01 +#include +#include +#include +#include +#include +#include +#include "util.h" // for genPoints + + +struct TestPointsToMask: public CppUnit::TestCase +{ + CPPUNIT_TEST_SUITE(TestPointsToMask); + CPPUNIT_TEST(testPointsToMask); + CPPUNIT_TEST_SUITE_END(); + + void testPointsToMask(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPointsToMask); + +//////////////////////////////////////// + +namespace { + +class PointList +{ +public: + PointList(const std::vector& points) : mPoints(&points) {} + + size_t size() const { return mPoints->size(); } + + void getPos(size_t n, openvdb::Vec3R& xyz) const { xyz = (*mPoints)[n]; } +protected: + std::vector const * const mPoints; +}; // PointList + +} // namespace + + + +//////////////////////////////////////// + + +void +TestPointsToMask::testPointsToMask() +{ + {// BoolGrid + // generate one point + std::vector points; + points.push_back( openvdb::Vec3R(-19.999, 4.50001, 6.71) ); + //points.push_back( openvdb::Vec3R( 20,-4.5,-5.2) ); + PointList pointList(points); + + // construct an empty mask grid + openvdb::BoolGrid grid( false ); + const float voxelSize = 0.1f; + grid.setTransform( openvdb::math::Transform::createLinearTransform(voxelSize) ); + CPPUNIT_ASSERT( grid.empty() ); + + // generate mask from points + openvdb::tools::PointsToMask mask( grid ); + mask.addPoints( pointList ); + CPPUNIT_ASSERT(!grid.empty() ); + CPPUNIT_ASSERT_EQUAL( 1, int(grid.activeVoxelCount()) ); + openvdb::BoolGrid::ValueOnCIter iter = grid.cbeginValueOn(); + //std::cerr << "Coord = " << iter.getCoord() << std::endl; + const openvdb::Coord p(-200, 45, 67); + CPPUNIT_ASSERT( iter.getCoord() == p ); + CPPUNIT_ASSERT(grid.tree().isValueOn( p ) ); + } + + {// MaskGrid + // generate one point + std::vector points; + points.push_back( openvdb::Vec3R(-19.999, 4.50001, 6.71) ); + //points.push_back( openvdb::Vec3R( 20,-4.5,-5.2) ); + PointList pointList(points); + + // construct an empty mask grid + openvdb::MaskGrid grid( false ); + const float voxelSize = 0.1f; + grid.setTransform( openvdb::math::Transform::createLinearTransform(voxelSize) ); + CPPUNIT_ASSERT( grid.empty() ); + + // generate mask from points + openvdb::tools::PointsToMask<> mask( grid ); + mask.addPoints( pointList ); + CPPUNIT_ASSERT(!grid.empty() ); + CPPUNIT_ASSERT_EQUAL( 1, int(grid.activeVoxelCount()) ); + openvdb::TopologyGrid::ValueOnCIter iter = grid.cbeginValueOn(); + //std::cerr << "Coord = " << iter.getCoord() << std::endl; + const openvdb::Coord p(-200, 45, 67); + CPPUNIT_ASSERT( iter.getCoord() == p ); + CPPUNIT_ASSERT(grid.tree().isValueOn( p ) ); + } + + + // generate shared transformation + openvdb::Index64 voxelCount = 0; + const float voxelSize = 0.001f; + const openvdb::math::Transform::Ptr xform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + // generate lots of points + std::vector points; + unittest_util::genPoints(15000000, points); + PointList pointList(points); + + //openvdb::util::CpuTimer timer; + {// serial BoolGrid + // construct an empty mask grid + openvdb::BoolGrid grid( false ); + grid.setTransform( xform ); + CPPUNIT_ASSERT( grid.empty() ); + + // generate mask from points + openvdb::tools::PointsToMask mask( grid ); + //timer.start("\nSerial BoolGrid"); + mask.addPoints( pointList, 0 ); + //timer.stop(); + + CPPUNIT_ASSERT(!grid.empty() ); + //grid.print(std::cerr, 3); + voxelCount = grid.activeVoxelCount(); + } + {// parallel BoolGrid + // construct an empty mask grid + openvdb::BoolGrid grid( false ); + grid.setTransform( xform ); + CPPUNIT_ASSERT( grid.empty() ); + + // generate mask from points + openvdb::tools::PointsToMask mask( grid ); + //timer.start("\nParallel BoolGrid"); + mask.addPoints( pointList ); + //timer.stop(); + + CPPUNIT_ASSERT(!grid.empty() ); + //grid.print(std::cerr, 3); + CPPUNIT_ASSERT_EQUAL( voxelCount, grid.activeVoxelCount() ); + } + {// parallel MaskGrid + // construct an empty mask grid + openvdb::MaskGrid grid( false ); + grid.setTransform( xform ); + CPPUNIT_ASSERT( grid.empty() ); + + // generate mask from points + openvdb::tools::PointsToMask<> mask( grid ); + //timer.start("\nParallel MaskGrid"); + mask.addPoints( pointList ); + //timer.stop(); + + CPPUNIT_ASSERT(!grid.empty() ); + //grid.print(std::cerr, 3); + CPPUNIT_ASSERT_EQUAL( voxelCount, grid.activeVoxelCount() ); + } + {// parallel create TopologyGrid + //timer.start("\nParallel Create MaskGrid"); + openvdb::MaskGrid::Ptr grid = openvdb::tools::createPointMask(pointList, *xform); + //timer.stop(); + + CPPUNIT_ASSERT(!grid->empty() ); + //grid->print(std::cerr, 3); + CPPUNIT_ASSERT_EQUAL( voxelCount, grid->activeVoxelCount() ); + } +} diff --git a/openvdb/unittest/TestPoissonSolver.cc b/openvdb/unittest/TestPoissonSolver.cc new file mode 100644 index 00000000..201bae9b --- /dev/null +++ b/openvdb/unittest/TestPoissonSolver.cc @@ -0,0 +1,511 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file unittest/TestPoissonSolver.cc +/// @authors D.J. Hill, Peter Cucka + +#include +#include +#include +//#include // for math::isApproxEqual() +#include // for JacobiPreconditioner +#include // for csgDifference/Union/Intersection +#include // for tools::createLevelSetSphere() +#include // for tools::sdfToFogVolume() +#include // for createLevelSetBox() +#include // for tools::erodeVoxels() +#include +#include // for boost::math::constants::pi +#include + + +class TestPoissonSolver: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestPoissonSolver); + CPPUNIT_TEST(testIndexTree); + CPPUNIT_TEST(testTreeToVectorToTree); + CPPUNIT_TEST(testLaplacian); + CPPUNIT_TEST(testSolve); + CPPUNIT_TEST(testSolveWithBoundaryConditions); + CPPUNIT_TEST(testSolveWithSegmentedDomain); + CPPUNIT_TEST_SUITE_END(); + + void testIndexTree(); + void testTreeToVectorToTree(); + void testLaplacian(); + void testSolve(); + void testSolveWithBoundaryConditions(); + void testSolveWithSegmentedDomain(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPoissonSolver); + + +//////////////////////////////////////// + + +void +TestPoissonSolver::testIndexTree() +{ + using namespace openvdb; + using tools::poisson::VIndex; + + using VIdxTree = FloatTree::ValueConverter::Type; + using LeafNodeType = VIdxTree::LeafNodeType; + + VIdxTree tree; + /// @todo populate tree + tree::LeafManager leafManager(tree); + + VIndex testOffset = 0; + for (size_t n = 0, N = leafManager.leafCount(); n < N; ++n) { + const LeafNodeType& leaf = leafManager.leaf(n); + for (LeafNodeType::ValueOnCIter it = leaf.cbeginValueOn(); it; ++it, testOffset++) { + CPPUNIT_ASSERT_EQUAL(testOffset, *it); + } + } + + //if (testOffset != VIndex(tree.activeVoxelCount())) { + // std::cout << "--Testing offsetmap - " + // << testOffset<<" != " + // << tree.activeVoxelCount() + // << " has active tile count " + // << tree.activeTileCount()<::Type; + + FloatGrid::Ptr sphere = tools::createLevelSetSphere( + /*radius=*/10.f, /*center=*/Vec3f(0.f), /*voxelSize=*/0.25f); + tools::sdfToFogVolume(*sphere); + FloatTree& inputTree = sphere->tree(); + + const Index64 numVoxels = inputTree.activeVoxelCount(); + + // Generate an index tree. + VIdxTree::Ptr indexTree = tools::poisson::createIndexTree(inputTree); + CPPUNIT_ASSERT(bool(indexTree)); + + // Copy the values of the active voxels of the tree into a vector. + math::pcg::VectorS::Ptr vec = + tools::poisson::createVectorFromTree(inputTree, *indexTree); + CPPUNIT_ASSERT_EQUAL(math::pcg::SizeType(numVoxels), vec->size()); + + { + // Convert the vector back to a tree. + FloatTree::Ptr inputTreeCopy = tools::poisson::createTreeFromVector( + *vec, *indexTree, /*bg=*/0.f); + + // Check that voxel values were preserved. + FloatGrid::ConstAccessor inputAcc = sphere->getConstAccessor(); + for (FloatTree::ValueOnCIter it = inputTreeCopy->cbeginValueOn(); it; ++it) { + const Coord ijk = it.getCoord(); + //if (!math::isApproxEqual(*it, inputTree.getValue(ijk))) { + // std::cout << " value error " << *it << " " + // << inputTree.getValue(ijk) << std::endl; + //} + CPPUNIT_ASSERT_DOUBLES_EQUAL(inputAcc.getValue(ijk), *it, /*tolerance=*/1.0e-6); + } + } +} + + +void +TestPoissonSolver::testLaplacian() +{ + using namespace openvdb; + using tools::poisson::VIndex; + + using VIdxTree = FloatTree::ValueConverter::Type; + + // For two different problem sizes, N = 8 and N = 20... + for (int N = 8; N <= 20; N += 12) { + // Construct an N x N x N volume in which the value of voxel (i, j, k) + // is sin(i) * sin(j) * sin(k), using a voxel spacing of pi / N. + const double delta = boost::math::constants::pi() / N; + FloatTree inputTree(/*background=*/0.f); + Coord ijk(0); + Int32 &i = ijk[0], &j = ijk[1], &k = ijk[2]; + for (i = 1; i < N; ++i) { + for (j = 1; j < N; ++j) { + for (k = 1; k < N; ++k) { + inputTree.setValue(ijk, static_cast( + std::sin(delta * i) * std::sin(delta * j) * std::sin(delta * k))); + } + } + } + const Index64 numVoxels = inputTree.activeVoxelCount(); + + // Generate an index tree. + VIdxTree::Ptr indexTree = tools::poisson::createIndexTree(inputTree); + CPPUNIT_ASSERT(bool(indexTree)); + + // Copy the values of the active voxels of the tree into a vector. + math::pcg::VectorS::Ptr source = + tools::poisson::createVectorFromTree(inputTree, *indexTree); + CPPUNIT_ASSERT_EQUAL(math::pcg::SizeType(numVoxels), source->size()); + + // Create a mask of the interior voxels of the source tree. + BoolTree interiorMask(/*background=*/false); + interiorMask.fill(CoordBBox(Coord(2), Coord(N-2)), /*value=*/true, /*active=*/true); + + // Compute the Laplacian of the source: + // D^2 sin(i) * sin(j) * sin(k) = -3 sin(i) * sin(j) * sin(k) + tools::poisson::LaplacianMatrix::Ptr laplacian = + tools::poisson::createISLaplacian(*indexTree, interiorMask, /*staggered=*/true); + laplacian->scale(1.0 / (delta * delta)); // account for voxel spacing + CPPUNIT_ASSERT_EQUAL(math::pcg::SizeType(numVoxels), laplacian->size()); + + math::pcg::VectorS result(source->size()); + laplacian->vectorMultiply(*source, result); + + // Dividing the result by the source should produce a vector of uniform value -3. + // Due to finite differencing, the actual ratio will be somewhat different, though. + const math::pcg::VectorS& src = *source; + const float expected = // compute the expected ratio using one of the corner voxels + float((3.0 * src[1] - 6.0 * src[0]) / (delta * delta * src[0])); + for (math::pcg::SizeType n = 0; n < result.size(); ++n) { + result[n] /= src[n]; + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, result[n], /*tolerance=*/1.0e-4); + } + } +} + + +void +TestPoissonSolver::testSolve() +{ + using namespace openvdb; + + FloatGrid::Ptr sphere = tools::createLevelSetSphere( + /*radius=*/10.f, /*center=*/Vec3f(0.f), /*voxelSize=*/0.25f); + tools::sdfToFogVolume(*sphere); + + math::pcg::State result = math::pcg::terminationDefaults(); + result.iterations = 100; + result.relativeError = result.absoluteError = 1.0e-4; + + FloatTree::Ptr outTree = tools::poisson::solve(sphere->tree(), result); + + CPPUNIT_ASSERT(result.success); + CPPUNIT_ASSERT(result.iterations < 60); +} + + +//////////////////////////////////////// + + +namespace { + +struct BoundaryOp { + void operator()(const openvdb::Coord& ijk, const openvdb::Coord& neighbor, + double& source, double& diagonal) const + { + if (neighbor.x() == ijk.x() && neighbor.z() == ijk.z()) { + // Workaround for spurious GCC 4.8 -Wstrict-overflow warning: + const openvdb::Coord::ValueType dy = (ijk.y() - neighbor.y()); + if (dy > 0) source -= 1.0; + else diagonal -= 1.0; + } + } +}; + + +template +void +doTestSolveWithBoundaryConditions() +{ + using namespace openvdb; + + using ValueType = typename TreeType::ValueType; + + // Solve for the pressure in a cubic tank of liquid that is open at the top. + // Boundary conditions are P = 0 at the top, dP/dy = -1 at the bottom + // and dP/dx = 0 at the sides. + // + // P = 0 + // +------+ (N,-1,N) + // /| /| + // (0,-1,0) +------+ | + // | | | | dP/dx = 0 + // dP/dx = 0 | +----|-+ + // |/ |/ + // (0,-N-1,0) +------+ (N,-N-1,0) + // dP/dy = -1 + + const int N = 9; + const ValueType zero = zeroVal(); + const double epsilon = math::Delta::value(); + + TreeType source(/*background=*/zero); + source.fill(CoordBBox(Coord(0, -N-1, 0), Coord(N, -1, N)), /*value=*/zero); + + math::pcg::State state = math::pcg::terminationDefaults(); + state.iterations = 100; + state.relativeError = state.absoluteError = epsilon; + + util::NullInterrupter interrupter; + + typename TreeType::Ptr solution = tools::poisson::solveWithBoundaryConditions( + source, BoundaryOp(), state, interrupter, /*staggered=*/true); + + CPPUNIT_ASSERT(state.success); + CPPUNIT_ASSERT(state.iterations < 60); + + // Verify that P = -y throughout the solution space. + for (typename TreeType::ValueOnCIter it = solution->cbeginValueOn(); it; ++it) { + CPPUNIT_ASSERT_DOUBLES_EQUAL( + double(-it.getCoord().y()), double(*it), /*tolerance=*/10.0 * epsilon); + } +} + +} // unnamed namespace + + +void +TestPoissonSolver::testSolveWithBoundaryConditions() +{ + doTestSolveWithBoundaryConditions(); + doTestSolveWithBoundaryConditions(); +} + + +namespace { + +openvdb::FloatGrid::Ptr +newCubeLS( + const int outerLength, // in voxels + const int innerLength, // in voxels + const openvdb::Vec3I& centerIS, // in index space + const float dx, // grid spacing + bool openTop) +{ + using namespace openvdb; + + using BBox = math::BBox; + + // World space dimensions and center for this box + const float outerWS = dx * float(outerLength); + const float innerWS = dx * float(innerLength); + Vec3f centerWS(centerIS); + centerWS *= dx; + + // Construct world space bounding boxes + BBox outerBBox( + Vec3f(-outerWS / 2, -outerWS / 2, -outerWS / 2), + Vec3f( outerWS / 2, outerWS / 2, outerWS / 2)); + BBox innerBBox; + if (openTop) { + innerBBox = BBox( + Vec3f(-innerWS / 2, -innerWS / 2, -innerWS / 2), + Vec3f( innerWS / 2, innerWS / 2, outerWS)); + } else { + innerBBox = BBox( + Vec3f(-innerWS / 2, -innerWS / 2, -innerWS / 2), + Vec3f( innerWS / 2, innerWS / 2, innerWS / 2)); + } + outerBBox.translate(centerWS); + innerBBox.translate(centerWS); + + math::Transform::Ptr xform = math::Transform::createLinearTransform(dx); + FloatGrid::Ptr cubeLS = tools::createLevelSetBox(outerBBox, *xform); + FloatGrid::Ptr inside = tools::createLevelSetBox(innerBBox, *xform); + tools::csgDifference(*cubeLS, *inside); + + return cubeLS; +} + + +class LSBoundaryOp +{ +public: + LSBoundaryOp(const openvdb::FloatTree& lsTree): mLS(&lsTree) {} + LSBoundaryOp(const LSBoundaryOp& other): mLS(other.mLS) {} + + void operator()(const openvdb::Coord& ijk, const openvdb::Coord& neighbor, + double& source, double& diagonal) const + { + // Doing nothing is equivalent to imposing dP/dn = 0 boundary condition + + if (neighbor.x() == ijk.x() && neighbor.y() == ijk.y()) { // on top or bottom + if (mLS->getValue(neighbor) <= 0.f) { + // closed boundary + source -= 1.0; + } else { + // open boundary + diagonal -= 1.0; + } + } + } + +private: + const openvdb::FloatTree* mLS; +}; + +} // unnamed namespace + + +void +TestPoissonSolver::testSolveWithSegmentedDomain() +{ + // In fluid simulations, incompressibility is enforced by the pressure, which is + // computed as a solution of a Poisson equation. Often, procedural animation + // of objects (e.g., characters) interacting with liquid will result in boundary + // conditions that describe multiple disjoint regions: regions of free surface flow + // and regions of trapped fluid. It is this second type of region for which + // there may be no consistent pressure (e.g., a shrinking watertight region + // filled with incompressible liquid). + // + // This unit test demonstrates how to use a level set and topological tools + // to separate the well-posed problem of a liquid with a free surface + // from the possibly ill-posed problem of fully enclosed liquid regions. + // + // For simplicity's sake, the physical boundaries are idealized as three + // non-overlapping cubes, one with an open top and two that are fully closed. + // All three contain incompressible liquid (x), and one of the closed cubes + // will be partially filled so that two of the liquid regions have a free surface + // (Dirichlet boundary condition on one side) while the totally filled cube + // would have no free surface (Neumann boundary conditions on all sides). + // ________________ ________________ + // __ __ | __________ | | __________ | + // | |x x x x x | | | | | | | |x x x x x | | + // | |x x x x x | | | |x x x x x | | | |x x x x x | | + // | |x x x x x | | | |x x x x x | | | |x x x x x | | + // | —————————— | | —————————— | | —————————— | + // |________________| |________________| |________________| + // + // The first two regions are clearly well-posed, while the third region + // may have no solution (or multiple solutions). + // -D.J.Hill + + using namespace openvdb; + + using PreconditionerType = + math::pcg::IncompleteCholeskyPreconditioner; + + // Grid spacing + const float dx = 0.05f; + + // Construct the solid boundaries in a single grid. + FloatGrid::Ptr solidBoundary; + { + // Create three non-overlapping cubes. + const int outerDim = 41; + const int innerDim = 31; + FloatGrid::Ptr + openDomain = newCubeLS(outerDim, innerDim, /*ctr=*/Vec3I(0, 0, 0), dx, /*open=*/true), + closedDomain0 = newCubeLS(outerDim, innerDim, /*ctr=*/Vec3I(60, 0, 0), dx, false), + closedDomain1 = newCubeLS(outerDim, innerDim, /*ctr=*/Vec3I(120, 0, 0), dx, false); + + // Union all three cubes into one grid. + tools::csgUnion(*openDomain, *closedDomain0); + tools::csgUnion(*openDomain, *closedDomain1); + + // Strictly speaking the solidBoundary level set should be rebuilt + // (with tools::levelSetRebuild()) after the csgUnions to insure a proper + // signed distance field, but we will forgo the rebuild in this example. + solidBoundary = openDomain; + } + + // Generate the source for the Poisson solver. + // For a liquid simulation this will be the divergence of the velocity field + // and will coincide with the liquid location. + // + // We activate by hand cells in distinct solution regions. + + FloatTree source(/*background=*/0.f); + + // The source is active in the union of the following "liquid" regions: + + // Fill the open box. + const int N = 15; + CoordBBox liquidInOpenDomain(Coord(-N, -N, -N), Coord(N, N, N)); + source.fill(liquidInOpenDomain, 0.f); + + // Totally fill closed box 0. + CoordBBox liquidInClosedDomain0(Coord(-N, -N, -N), Coord(N, N, N)); + liquidInClosedDomain0.translate(Coord(60, 0, 0)); + source.fill(liquidInClosedDomain0, 0.f); + + // Half fill closed box 1. + CoordBBox liquidInClosedDomain1(Coord(-N, -N, -N), Coord(N, N, 0)); + liquidInClosedDomain1.translate(Coord(120, 0, 0)); + source.fill(liquidInClosedDomain1, 0.f); + + // Compute the number of voxels in the well-posed region of the source. + const Index64 expectedWellPosedVolume = + liquidInOpenDomain.volume() + liquidInClosedDomain1.volume(); + + // Generate a mask that defines the solution domain. + // Inactive values of the source map to false and active values map to true. + const BoolTree totalSourceDomain(source, /*inactive=*/false, /*active=*/true, TopologyCopy()); + + // Extract the "interior regions" from the solid boundary. + // The result will correspond to the the walls of the boxes unioned with inside of the full box. + const BoolTree::ConstPtr interiorMask = tools::extractEnclosedRegion( + solidBoundary->tree(), /*isovalue=*/float(0), &totalSourceDomain); + + // Identify the well-posed part of the problem. + BoolTree wellPosedDomain(source, /*inactive=*/false, /*active=*/true, TopologyCopy()); + wellPosedDomain.topologyDifference(*interiorMask); + CPPUNIT_ASSERT_EQUAL(expectedWellPosedVolume, wellPosedDomain.activeVoxelCount()); + + // Solve the well-posed Poisson equation. + + const double epsilon = math::Delta::value(); + math::pcg::State state = math::pcg::terminationDefaults(); + state.iterations = 200; + state.relativeError = state.absoluteError = epsilon; + + util::NullInterrupter interrupter; + + // Define boundary conditions that are consistent with solution = 0 + // at the liquid/air boundary and with a linear response with depth. + LSBoundaryOp boundaryOp(solidBoundary->tree()); + + // Compute the solution + FloatTree::Ptr wellPosedSolutionP = + tools::poisson::solveWithBoundaryConditionsAndPreconditioner( + source, wellPosedDomain, boundaryOp, state, interrupter, /*staggered=*/true); + + CPPUNIT_ASSERT_EQUAL(expectedWellPosedVolume, wellPosedSolutionP->activeVoxelCount()); + CPPUNIT_ASSERT(state.success); + CPPUNIT_ASSERT(state.iterations < 68); + + // Verify that the solution is linear with depth. + for (FloatTree::ValueOnCIter it = wellPosedSolutionP->cbeginValueOn(); it; ++it) { + Index32 depth; + if (liquidInOpenDomain.isInside(it.getCoord())) { + depth = 1 + liquidInOpenDomain.max().z() - it.getCoord().z(); + } else { + depth = 1 + liquidInClosedDomain1.max().z() - it.getCoord().z(); + } + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(depth), double(*it), /*tolerance=*/10.0 * epsilon); + } + +#if 0 + // Optionally, one could attempt to compute the solution in the enclosed regions. + { + // Identify the potentially ill-posed part of the problem. + BoolTree illPosedDomain(source, /*inactive=*/false, /*active=*/true, TopologyCopy()); + illPosedDomain.topologyIntersection(source); + + // Solve the Poisson equation in the two unconnected regions. + FloatTree::Ptr illPosedSoln = + tools::poisson::solveWithBoundaryConditionsAndPreconditioner( + source, illPosedDomain, LSBoundaryOp(*solidBoundary->tree()), + state, interrupter, /*staggered=*/true); + } +#endif +} diff --git a/openvdb/unittest/TestPotentialFlow.cc b/openvdb/unittest/TestPotentialFlow.cc new file mode 100644 index 00000000..963532ae --- /dev/null +++ b/openvdb/unittest/TestPotentialFlow.cc @@ -0,0 +1,429 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file unittest/TestPotentialFlow.cc + +#include +#include +#include +#include + + +class TestPotentialFlow: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestPotentialFlow); + CPPUNIT_TEST(testMask); + CPPUNIT_TEST(testNeumannVelocities); + CPPUNIT_TEST(testUniformStream); + CPPUNIT_TEST(testFlowAroundSphere); + CPPUNIT_TEST_SUITE_END(); + void testMask(); + void testNeumannVelocities(); + void testUniformStream(); + void testFlowAroundSphere(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPotentialFlow); + + +void +TestPotentialFlow::testMask() +{ + using namespace openvdb; + + const float radius = 1.5f; + const Vec3f center(0.0f, 0.0f, 0.0f); + const float voxelSize = 0.25f; + const float halfWidth = 3.0f; + + FloatGrid::Ptr sphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + + const int dilation = 5; + + MaskGrid::Ptr mask = tools::createPotentialFlowMask(*sphere, dilation); + MaskGrid::Ptr defaultMask = tools::createPotentialFlowMask(*sphere); + CPPUNIT_ASSERT(*mask == *defaultMask); + + auto acc = mask->getAccessor(); + + // the isosurface of this sphere is at y = 6 + // this mask forms a band dilated outwards from the isosurface by 5 voxels + + CPPUNIT_ASSERT(!acc.isValueOn(Coord(0, 5, 0))); + CPPUNIT_ASSERT(acc.isValueOn(Coord(0, 6, 0))); + CPPUNIT_ASSERT(acc.isValueOn(Coord(0, 10, 0))); + CPPUNIT_ASSERT(!acc.isValueOn(Coord(0, 11, 0))); + + { // error on non-uniform voxel size + FloatGrid::Ptr nonUniformSphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + math::Transform::Ptr nonUniformTransform(new math::Transform( + math::MapBase::Ptr(new math::ScaleMap(Vec3d(0.1, 0.2, 0.3))))); + nonUniformSphere->setTransform(nonUniformTransform); + + CPPUNIT_ASSERT_THROW(tools::createPotentialFlowMask(*nonUniformSphere, dilation), + openvdb::ValueError); + } + + // this is the minimum mask of one voxel either side of the isosurface + + mask = tools::createPotentialFlowMask(*sphere, 2); + + acc = mask->getAccessor(); + + CPPUNIT_ASSERT(!acc.isValueOn(Coord(0, 5, 0))); + CPPUNIT_ASSERT(acc.isValueOn(Coord(0, 6, 0))); + CPPUNIT_ASSERT(acc.isValueOn(Coord(0, 7, 0))); + CPPUNIT_ASSERT(!acc.isValueOn(Coord(0, 8, 0))); + + // these should all produce the same masks as the dilation value is clamped + + MaskGrid::Ptr negativeMask = tools::createPotentialFlowMask(*sphere, -1); + MaskGrid::Ptr zeroMask = tools::createPotentialFlowMask(*sphere, 0); + MaskGrid::Ptr oneMask = tools::createPotentialFlowMask(*sphere, 1); + + CPPUNIT_ASSERT(*negativeMask == *mask); + CPPUNIT_ASSERT(*zeroMask == *mask); + CPPUNIT_ASSERT(*oneMask == *mask); +} + + +void +TestPotentialFlow::testNeumannVelocities() +{ + using namespace openvdb; + + const float radius = 1.5f; + const Vec3f center(0.0f, 0.0f, 0.0f); + const float voxelSize = 0.25f; + const float halfWidth = 3.0f; + + FloatGrid::Ptr sphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + + MaskGrid::Ptr domain = tools::createPotentialFlowMask(*sphere); + + { + // test identical potential from a wind velocity supplied through grid or background value + + Vec3d windVelocityValue(0, 0, 10); + + Vec3dTree::Ptr windTree(new Vec3dTree(sphere->tree(), zeroVal(), TopologyCopy())); + dilateVoxels(*windTree, 2, tools::NN_FACE_EDGE_VERTEX); + windTree->voxelizeActiveTiles(); + + for (auto leaf = windTree->beginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->beginValueOn(); iter; ++iter) { + iter.setValue(windVelocityValue); + } + } + + Vec3dGrid::Ptr windGrid(Vec3dGrid::create(windTree)); + windGrid->setTransform(sphere->transform().copy()); + + auto windPotentialFromGrid = tools::createPotentialFlowNeumannVelocities( + *sphere, *domain, windGrid, Vec3d(0)); + + CPPUNIT_ASSERT_EQUAL(windPotentialFromGrid->transform(), sphere->transform()); + + auto windPotentialFromBackground = tools::createPotentialFlowNeumannVelocities( + *sphere, *domain, Vec3dGrid::Ptr(), windVelocityValue); + + auto accessor = windPotentialFromGrid->getConstAccessor(); + auto accessor2 = windPotentialFromBackground->getConstAccessor(); + + CPPUNIT_ASSERT_EQUAL(windPotentialFromGrid->activeVoxelCount(), + windPotentialFromBackground->activeVoxelCount()); + + for (auto leaf = windPotentialFromGrid->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL(accessor.isValueOn(iter.getCoord()), + accessor2.isValueOn(iter.getCoord())); + CPPUNIT_ASSERT_EQUAL(accessor.getValue(iter.getCoord()), + accessor2.getValue(iter.getCoord())); + } + } + + // test potential from a wind velocity supplied through grid background value + + Vec3dTree::Ptr emptyWindTree( + new Vec3dTree(sphere->tree(), windVelocityValue, TopologyCopy())); + Vec3dGrid::Ptr emptyWindGrid(Vec3dGrid::create(emptyWindTree)); + emptyWindGrid->setTransform(sphere->transform().copy()); + + auto windPotentialFromGridBackground = tools::createPotentialFlowNeumannVelocities( + *sphere, *domain, emptyWindGrid, Vec3d(0)); + + CPPUNIT_ASSERT_EQUAL(windPotentialFromGridBackground->transform(), sphere->transform()); + + accessor = windPotentialFromGridBackground->getConstAccessor(); + accessor2 = windPotentialFromBackground->getConstAccessor(); + + CPPUNIT_ASSERT_EQUAL(windPotentialFromGridBackground->activeVoxelCount(), + windPotentialFromBackground->activeVoxelCount()); + + for (auto leaf = windPotentialFromGridBackground->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL(accessor.isValueOn(iter.getCoord()), + accessor2.isValueOn(iter.getCoord())); + CPPUNIT_ASSERT_EQUAL(accessor.getValue(iter.getCoord()), + accessor2.getValue(iter.getCoord())); + } + } + + // test potential values are double when applying wind velocity + // through grid and background values + + auto windPotentialFromBoth = tools::createPotentialFlowNeumannVelocities( + *sphere, *domain, windGrid, windVelocityValue); + + tools::prune(windPotentialFromBoth->tree(), Vec3d(1e-3)); + tools::prune(windPotentialFromBackground->tree(), Vec3d(1e-3)); + + accessor = windPotentialFromBoth->getConstAccessor(); + accessor2 = windPotentialFromBackground->getConstAccessor(); + + for (auto leaf = windPotentialFromBoth->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL(accessor.isValueOn(iter.getCoord()), + accessor2.isValueOn(iter.getCoord())); + CPPUNIT_ASSERT_EQUAL(accessor.getValue(iter.getCoord()), + accessor2.getValue(iter.getCoord()) * 2); + } + } + + CPPUNIT_ASSERT(*windPotentialFromBoth == *windPotentialFromBackground); + } + + Vec3dGrid::Ptr zeroVelocity = Vec3dGrid::create(Vec3d(0)); + + { // error if grid is not a levelset + FloatGrid::Ptr nonLevelSetSphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + nonLevelSetSphere->setGridClass(GRID_FOG_VOLUME); + + CPPUNIT_ASSERT_THROW(tools::createPotentialFlowNeumannVelocities( + *nonLevelSetSphere, *domain, zeroVelocity, Vec3d(5)), openvdb::TypeError); + } + + { // accept double level set grid + DoubleGrid::Ptr doubleSphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + + CPPUNIT_ASSERT_NO_THROW(tools::createPotentialFlowNeumannVelocities( + *doubleSphere, *domain, zeroVelocity, Vec3d(5))); + } + + { // zero boundary velocities and background velocity + Vec3d zeroVelocityValue(zeroVal()); + auto neumannVelocities = tools::createPotentialFlowNeumannVelocities( + *sphere, *domain, zeroVelocity, zeroVelocityValue); + CPPUNIT_ASSERT_EQUAL(neumannVelocities->activeVoxelCount(), Index64(0)); + } +} + + +void +TestPotentialFlow::testUniformStream() +{ + // this unit test checks the scalar potential and velocity flow field + // for a uniform stream which consists of a 100x100x100 cube of + // neumann voxels with constant velocity (0, 0, 1) + + using namespace openvdb; + + auto transform = math::Transform::createLinearTransform(1.0); + + auto mask = MaskGrid::create(false); + mask->setTransform(transform); + auto maskAccessor = mask->getAccessor(); + + auto neumann = Vec3dGrid::create(Vec3d(0)); + auto neumannAccessor = neumann->getAccessor(); + + for (int i = -50; i < 50; i++) { + for (int j = -50; j < 50; j++) { + for (int k = -50; k < 50; k++) { + Coord ijk(i, j, k); + maskAccessor.setValueOn(ijk, true); + neumannAccessor.setValueOn(ijk, Vec3d(0, 0, 1)); + } + } + } + + openvdb::math::pcg::State state = math::pcg::terminationDefaults(); + + state.iterations = 2000; + state.absoluteError = 1e-8; + + auto potential = tools::computeScalarPotential(*mask, *neumann, state); + + // check convergence + + CPPUNIT_ASSERT(state.success); + CPPUNIT_ASSERT(state.iterations > 0 && state.iterations < 1000); + CPPUNIT_ASSERT(state.absoluteError < 1e-6); + + CPPUNIT_ASSERT_EQUAL(potential->activeVoxelCount(), mask->activeVoxelCount()); + + // for uniform flow along the z-axis, the scalar potential should be equal to the z co-ordinate + + for (auto leaf = potential->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + const double staggeredZ = iter.getCoord().z() + 0.5; + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue(), staggeredZ, /*tolerance*/0.1)); + } + } + + auto flow = tools::computePotentialFlow(*potential, *neumann); + + CPPUNIT_ASSERT_EQUAL(flow->activeVoxelCount(), mask->activeVoxelCount()); + + // flow velocity should be equal to the input velocity (0, 0, 1) + + for (auto leaf = flow->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue().x(), 0.0, /*tolerance*/1e-6)); + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue().y(), 0.0, /*tolerance*/1e-6)); + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue().z(), 1.0, /*tolerance*/1e-6)); + } + } +} + + +void +TestPotentialFlow::testFlowAroundSphere() +{ + using namespace openvdb; + + const float radius = 1.5f; + const Vec3f center(0.0f, 0.0f, 0.0f); + const float voxelSize = 0.25f; + const float halfWidth = 3.0f; + + const int dilation = 50; + + FloatGrid::Ptr sphere = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + + MaskGrid::Ptr domain = tools::createPotentialFlowMask(*sphere, dilation); + + { // compute potential flow for a global wind velocity around a sphere + + Vec3f windVelocity(0, 0, 1); + Vec3fGrid::Ptr neumann = tools::createPotentialFlowNeumannVelocities(*sphere, + *domain, Vec3fGrid::Ptr(), windVelocity); + + openvdb::math::pcg::State state = math::pcg::terminationDefaults(); + + state.iterations = 2000; + state.absoluteError = 1e-8; + + FloatGrid::Ptr potential = tools::computeScalarPotential(*domain, *neumann, state); + + // compute a laplacian of the potential within the domain (excluding neumann voxels) + // and ensure it evaluates to zero + + auto mask = BoolGrid::create(/*background=*/false); + mask->setTransform(potential->transform().copy()); + mask->topologyUnion(*potential); + + auto dilatedSphereMask = tools::interiorMask(*sphere); + tools::dilateActiveValues(dilatedSphereMask->tree(), 1); + mask->topologyDifference(*dilatedSphereMask); + + FloatGrid::Ptr laplacian = tools::laplacian(*potential, *mask); + + for (auto leaf = laplacian->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue(), 0.0f, /*tolerance*/1e-3f)); + } + } + + Vec3fGrid::Ptr flowVel = tools::computePotentialFlow(*potential, *neumann); + + // compute the divergence of the flow velocity within the domain + // (excluding neumann voxels and exterior voxels) + // and ensure it evaluates to zero + + tools::erodeVoxels(mask->tree(), 2, tools::NN_FACE); + + FloatGrid::Ptr divergence = tools::divergence(*flowVel, *mask); + + for (auto leaf = divergence->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue(), 0.0f, /*tolerance*/0.1f)); + } + } + + // check the background velocity has been applied correctly + + Vec3fGrid::Ptr flowVelBackground = + tools::computePotentialFlow(*potential, *neumann, windVelocity); + + CPPUNIT_ASSERT_EQUAL(flowVelBackground->activeVoxelCount(), + flowVelBackground->activeVoxelCount()); + + auto maskAccessor = mask->getConstAccessor(); + + auto accessor = flowVel->getConstAccessor(); + auto accessor2 = flowVelBackground->getConstAccessor(); + + for (auto leaf = flowVelBackground->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + // ignore values near the neumann boundary + if (!maskAccessor.isValueOn(iter.getCoord())) continue; + + const Vec3f value1 = accessor.getValue(iter.getCoord()); + const Vec3f value2 = accessor2.getValue(iter.getCoord()) + windVelocity; + + CPPUNIT_ASSERT(math::isApproxEqual(value1.x(), value2.x(), /*tolerance=*/1e-3f)); + CPPUNIT_ASSERT(math::isApproxEqual(value1.y(), value2.y(), /*tolerance=*/1e-3f)); + CPPUNIT_ASSERT(math::isApproxEqual(value1.z(), value2.z(), /*tolerance=*/1e-3f)); + } + } + } + + { // check double-precision solve + DoubleGrid::Ptr sphereDouble = + tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + + Vec3d windVelocity(0, 0, 1); + Vec3dGrid::Ptr neumann = tools::createPotentialFlowNeumannVelocities(*sphereDouble, + *domain, Vec3dGrid::Ptr(), windVelocity); + + openvdb::math::pcg::State state = math::pcg::terminationDefaults(); + + state.iterations = 2000; + state.absoluteError = 1e-8; + + DoubleGrid::Ptr potential = tools::computeScalarPotential(*domain, *neumann, state); + + CPPUNIT_ASSERT(potential); + + // compute a laplacian of the potential within the domain (excluding neumann voxels) + // and ensure it evaluates to zero + + auto mask = BoolGrid::create(/*background=*/false); + mask->setTransform(potential->transform().copy()); + mask->topologyUnion(*potential); + + auto dilatedSphereMask = tools::interiorMask(*sphereDouble); + tools::dilateActiveValues(dilatedSphereMask->tree(), 1); + mask->topologyDifference(*dilatedSphereMask); + + DoubleGrid::Ptr laplacian = tools::laplacian(*potential, *mask); + + for (auto leaf = laplacian->tree().cbeginLeaf(); leaf; ++leaf) { + for (auto iter = leaf->cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(math::isApproxEqual(iter.getValue(), 0.0, /*tolerance*/1e-5)); + } + } + + Vec3dGrid::Ptr flowVel = tools::computePotentialFlow(*potential, *neumann); + + CPPUNIT_ASSERT(flowVel); + } +} diff --git a/openvdb/unittest/TestPrePostAPI.cc b/openvdb/unittest/TestPrePostAPI.cc new file mode 100644 index 00000000..113b8d0d --- /dev/null +++ b/openvdb/unittest/TestPrePostAPI.cc @@ -0,0 +1,686 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include + + +class TestPrePostAPI: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestPrePostAPI); + + CPPUNIT_TEST(testMat4); + CPPUNIT_TEST(testMat4Rotate); + CPPUNIT_TEST(testMat4Scale); + CPPUNIT_TEST(testMat4Shear); + CPPUNIT_TEST(testMaps); + CPPUNIT_TEST(testLinearTransform); + CPPUNIT_TEST(testFrustumTransform); + + CPPUNIT_TEST_SUITE_END(); + + void testMat4(); + void testMat4Rotate(); + void testMat4Scale(); + void testMat4Shear(); + void testMaps(); + void testLinearTransform(); + void testFrustumTransform(); + //void testIsType(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestPrePostAPI); + + +void +TestPrePostAPI::testMat4() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + + Mat4d m = Mat4d::identity(); + Mat4d minv = Mat4d::identity(); + + // create matrix with pre-API + // Translate Shear Rotate Translate Scale matrix + m.preScale(Vec3d(1, 2, 3)); + m.preTranslate(Vec3d(2, 3, 4)); + m.preRotate(X_AXIS, 20); + m.preShear(X_AXIS, Y_AXIS, 2); + m.preTranslate(Vec3d(2, 2, 2)); + + // create inverse using the post-API + minv.postScale(Vec3d(1.f, 1.f/2.f, 1.f/3.f)); + minv.postTranslate(-Vec3d(2, 3, 4)); + minv.postRotate(X_AXIS,-20); + minv.postShear(X_AXIS, Y_AXIS, -2); + minv.postTranslate(-Vec3d(2, 2, 2)); + + Mat4d mtest = minv * m; + + // verify that the results is an identity + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][0], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][1], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][2], 1, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][3], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][2], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][3], 1, TOL); +} + + +void +TestPrePostAPI::testMat4Rotate() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + Mat4d rx, ry, rz; + const double angle1 = 20. * M_PI / 180.; + const double angle2 = 64. * M_PI / 180.; + const double angle3 = 125. *M_PI / 180.; + rx.setToRotation(Vec3d(1,0,0), angle1); + ry.setToRotation(Vec3d(0,1,0), angle2); + rz.setToRotation(Vec3d(0,0,1), angle3); + + Mat4d shear = Mat4d::identity(); + shear.setToShear(X_AXIS, Z_AXIS, 2.0); + shear.preShear(Y_AXIS, X_AXIS, 3.0); + shear.preTranslate(Vec3d(2,4,1)); + + const Mat4d preResult = rz*ry*rx*shear; + Mat4d mpre = shear; + mpre.preRotate(X_AXIS, angle1); + mpre.preRotate(Y_AXIS, angle2); + mpre.preRotate(Z_AXIS, angle3); + + CPPUNIT_ASSERT( mpre.eq(preResult, TOL) ); + + const Mat4d postResult = shear*rx*ry*rz; + Mat4d mpost = shear; + mpost.postRotate(X_AXIS, angle1); + mpost.postRotate(Y_AXIS, angle2); + mpost.postRotate(Z_AXIS, angle3); + + CPPUNIT_ASSERT( mpost.eq(postResult, TOL) ); + + CPPUNIT_ASSERT( !mpost.eq(mpre, TOL)); + +} + + +void +TestPrePostAPI::testMat4Scale() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + Mat4d mpre, mpost; + double* pre = mpre.asPointer(); + double* post = mpost.asPointer(); + for (int i = 0; i < 16; ++i) { + pre[i] = double(i); + post[i] = double(i); + } + + Mat4d scale = Mat4d::identity(); + scale.setToScale(Vec3d(2, 3, 5.5)); + Mat4d preResult = scale * mpre; + Mat4d postResult = mpost * scale; + + mpre.preScale(Vec3d(2, 3, 5.5)); + mpost.postScale(Vec3d(2, 3, 5.5)); + + CPPUNIT_ASSERT( mpre.eq(preResult, TOL) ); + CPPUNIT_ASSERT( mpost.eq(postResult, TOL) ); +} + + +void +TestPrePostAPI::testMat4Shear() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + Mat4d mpre, mpost; + double* pre = mpre.asPointer(); + double* post = mpost.asPointer(); + for (int i = 0; i < 16; ++i) { + pre[i] = double(i); + post[i] = double(i); + } + + Mat4d shear = Mat4d::identity(); + shear.setToShear(X_AXIS, Z_AXIS, 13.); + Mat4d preResult = shear * mpre; + Mat4d postResult = mpost * shear; + + mpre.preShear(X_AXIS, Z_AXIS, 13.); + mpost.postShear(X_AXIS, Z_AXIS, 13.); + + CPPUNIT_ASSERT( mpre.eq(preResult, TOL) ); + CPPUNIT_ASSERT( mpost.eq(postResult, TOL) ); +} + + +void +TestPrePostAPI::testMaps() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + + { // pre translate + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + const Vec3d trans(1,2,3); + Mat4d correct = Mat4d::identity(); + correct.preTranslate(trans); + { + MapBase::Ptr base = usm.preTranslate(trans); + Mat4d result = (base->getAffineMap())->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.preTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.preTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.preTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.preTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // post translate + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + const Vec3d trans(1,2,3); + Mat4d correct = Mat4d::identity(); + correct.postTranslate(trans); + { + const Mat4d result = usm.postTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.postTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.postTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.postTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.postTranslate(trans)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // pre scale + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + const Vec3d scale(1,2,3); + Mat4d correct = Mat4d::identity(); + correct.preScale(scale); + { + const Mat4d result = usm.preScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.preScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.preScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.preScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.preScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // post scale + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + const Vec3d scale(1,2,3); + Mat4d correct = Mat4d::identity(); + correct.postScale(scale); + { + const Mat4d result = usm.postScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.postScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.postScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.postScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.postScale(scale)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // pre shear + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + Mat4d correct = Mat4d::identity(); + correct.preShear(X_AXIS, Z_AXIS, 13.); + { + const Mat4d result = usm.preShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.preShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.preShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.preShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.preShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // post shear + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + Mat4d correct = Mat4d::identity(); + correct.postShear(X_AXIS, Z_AXIS, 13.); + { + const Mat4d result = usm.postShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = + ustm.postShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.postShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.postShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.postShear(13., X_AXIS, Z_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // pre rotate + const double angle1 = 20. * M_PI / 180.; + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + Mat4d correct = Mat4d::identity(); + correct.preRotate(X_AXIS, angle1); + { + const Mat4d result = usm.preRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.preRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.preRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.preRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.preRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } + { // post rotate + const double angle1 = 20. * M_PI / 180.; + UniformScaleMap usm; + UniformScaleTranslateMap ustm; + ScaleMap sm; + ScaleTranslateMap stm; + AffineMap am; + + Mat4d correct = Mat4d::identity(); + correct.postRotate(X_AXIS, angle1); + { + const Mat4d result = usm.postRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = ustm.postRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = sm.postRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = stm.postRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + { + const Mat4d result = am.postRotate(angle1, X_AXIS)->getAffineMap()->getConstMat4(); + CPPUNIT_ASSERT( correct.eq(result, TOL)); + } + } +} + + +void +TestPrePostAPI::testLinearTransform() +{ + using namespace openvdb::math; + + double TOL = 1e-7; + { + Transform::Ptr t = Transform::createLinearTransform(1.f); + Transform::Ptr tinv = Transform::createLinearTransform(1.f); + + // create matrix with pre-API + // Translate Shear Rotate Translate Scale matrix + t->preScale(Vec3d(1, 2, 3)); + t->preTranslate(Vec3d(2, 3, 4)); + t->preRotate(20); + t->preShear(2, X_AXIS, Y_AXIS); + t->preTranslate(Vec3d(2, 2, 2)); + + // create inverse using the post-API + tinv->postScale(Vec3d(1.f, 1.f/2.f, 1.f/3.f)); + tinv->postTranslate(-Vec3d(2, 3, 4)); + tinv->postRotate(-20); + tinv->postShear(-2, X_AXIS, Y_AXIS); + tinv->postTranslate(-Vec3d(2, 2, 2)); + + + // test this by verifying that equvilent interal matrix + // represenations are inverses + Mat4d m = t->baseMap()->getAffineMap()->getMat4(); + Mat4d minv = tinv->baseMap()->getAffineMap()->getMat4(); + + Mat4d mtest = minv * m; + + // verify that the results is an identity + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][0], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][1], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][2], 1, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][3], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][2], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][3], 1, TOL); + } + + { + Transform::Ptr t = Transform::createLinearTransform(1.f); + + Mat4d m = Mat4d::identity(); + + // create matrix with pre-API + // Translate Shear Rotate Translate Scale matrix + m.preScale(Vec3d(1, 2, 3)); + m.preTranslate(Vec3d(2, 3, 4)); + m.preRotate(X_AXIS, 20); + m.preShear(X_AXIS, Y_AXIS, 2); + m.preTranslate(Vec3d(2, 2, 2)); + + t->preScale(Vec3d(1,2,3)); + t->preMult(m); + t->postMult(m); + + Mat4d minv = Mat4d::identity(); + + // create inverse using the post-API + minv.postScale(Vec3d(1.f, 1.f/2.f, 1.f/3.f)); + minv.postTranslate(-Vec3d(2, 3, 4)); + minv.postRotate(X_AXIS,-20); + minv.postShear(X_AXIS, Y_AXIS, -2); + minv.postTranslate(-Vec3d(2, 2, 2)); + + t->preMult(minv); + t->postMult(minv); + + Mat4d mtest = t->baseMap()->getAffineMap()->getMat4(); + + + // verify that the results is the scale + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][0], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][1], 2, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][2], 3, 1e-6); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][3], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][0], 0, 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][1], 0, 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][2], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][3], 1, TOL); + } + + +} + + +void +TestPrePostAPI::testFrustumTransform() +{ + using namespace openvdb::math; + + using BBoxd = BBox; + + double TOL = 1e-7; + { + + BBoxd bbox(Vec3d(-5,-5,0), Vec3d(5,5,10)); + Transform::Ptr t = Transform::createFrustumTransform( + bbox, /* taper*/ 1, /*depth*/10, /* voxel size */1.f); + Transform::Ptr tinv = Transform::createFrustumTransform( + bbox, /* taper*/ 1, /*depth*/10, /* voxel size */1.f); + + + // create matrix with pre-API + // Translate Shear Rotate Translate Scale matrix + t->preScale(Vec3d(1, 2, 3)); + t->preTranslate(Vec3d(2, 3, 4)); + t->preRotate(20); + t->preShear(2, X_AXIS, Y_AXIS); + t->preTranslate(Vec3d(2, 2, 2)); + + // create inverse using the post-API + tinv->postScale(Vec3d(1.f, 1.f/2.f, 1.f/3.f)); + tinv->postTranslate(-Vec3d(2, 3, 4)); + tinv->postRotate(-20); + tinv->postShear(-2, X_AXIS, Y_AXIS); + tinv->postTranslate(-Vec3d(2, 2, 2)); + + + // test this by verifying that equvilent interal matrix + // represenations are inverses + NonlinearFrustumMap::Ptr frustum = + openvdb::StaticPtrCast(t->baseMap()); + NonlinearFrustumMap::Ptr frustuminv = + openvdb::StaticPtrCast(tinv->baseMap()); + + Mat4d m = frustum->secondMap().getMat4(); + Mat4d minv = frustuminv->secondMap().getMat4(); + + Mat4d mtest = minv * m; + + // verify that the results is an identity + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][0], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][1], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][2], 1, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][3], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][2], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][3], 1, TOL); + } + + { + + BBoxd bbox(Vec3d(-5,-5,0), Vec3d(5,5,10)); + Transform::Ptr t = Transform::createFrustumTransform( + bbox, /* taper*/ 1, /*depth*/10, /* voxel size */1.f); + + + Mat4d m = Mat4d::identity(); + + // create matrix with pre-API + // Translate Shear Rotate Translate Scale matrix + m.preScale(Vec3d(1, 2, 3)); + m.preTranslate(Vec3d(2, 3, 4)); + m.preRotate(X_AXIS, 20); + m.preShear(X_AXIS, Y_AXIS, 2); + m.preTranslate(Vec3d(2, 2, 2)); + + t->preScale(Vec3d(1,2,3)); + t->preMult(m); + t->postMult(m); + + Mat4d minv = Mat4d::identity(); + + // create inverse using the post-API + minv.postScale(Vec3d(1.f, 1.f/2.f, 1.f/3.f)); + minv.postTranslate(-Vec3d(2, 3, 4)); + minv.postRotate(X_AXIS,-20); + minv.postShear(X_AXIS, Y_AXIS, -2); + minv.postTranslate(-Vec3d(2, 2, 2)); + + t->preMult(minv); + t->postMult(minv); + + NonlinearFrustumMap::Ptr frustum = + openvdb::StaticPtrCast(t->baseMap()); + Mat4d mtest = frustum->secondMap().getMat4(); + + // verify that the results is the scale + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][0], 1, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][1], 2, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][2], 3, 1e-6); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[0][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][2], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[1][3], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][0], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][1], 0, TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[2][3], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][0], 0, 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][1], 0, 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][2], 0, TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(mtest[3][3], 1, TOL); + } + + +} diff --git a/openvdb/unittest/TestQuadraticInterp.cc b/openvdb/unittest/TestQuadraticInterp.cc new file mode 100644 index 00000000..87c2b623 --- /dev/null +++ b/openvdb/unittest/TestQuadraticInterp.cc @@ -0,0 +1,330 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file TestQuadraticInterp.cc + +#include +#include +#include +#include + +// CPPUNIT_TEST_SUITE() invokes CPPUNIT_TESTNAMER_DECL() to generate a suite name +// from the FixtureType. But if FixtureType is a templated type, the generated name +// can become long and messy. This macro overrides the normal naming logic, +// instead invoking FixtureType::testSuiteName(), which should be a static member +// function that returns a std::string containing the suite name for the specific +// template instantiation. +#undef CPPUNIT_TESTNAMER_DECL +#define CPPUNIT_TESTNAMER_DECL( variableName, FixtureType ) \ + CPPUNIT_NS::TestNamer variableName( FixtureType::testSuiteName() ) + + +namespace { +// Absolute tolerance for floating-point equality comparisons +const double TOLERANCE = 1.0e-5; +} + + +//////////////////////////////////////// + + +template +class TestQuadraticInterp: public CppUnit::TestCase +{ +public: + typedef typename GridType::ValueType ValueT; + typedef typename GridType::Ptr GridPtr; + struct TestVal { float x, y, z; ValueT expected; }; + + static std::string testSuiteName() + { + std::string name = openvdb::typeNameAsString(); + if (!name.empty()) name[0] = static_cast(::toupper(name[0])); + return "TestQuadraticInterp" + name; + } + + CPPUNIT_TEST_SUITE(TestQuadraticInterp); + CPPUNIT_TEST(test); + CPPUNIT_TEST(testConstantValues); + CPPUNIT_TEST(testFillValues); + CPPUNIT_TEST(testNegativeIndices); + CPPUNIT_TEST_SUITE_END(); + + void test(); + void testConstantValues(); + void testFillValues(); + void testNegativeIndices(); + +private: + void executeTest(const GridPtr&, const TestVal*, size_t numVals) const; + + /// Initialize an arbitrary ValueType from a scalar. + static inline ValueT constValue(double d) { return ValueT(d); } + + /// Compare two numeric values for equality within an absolute tolerance. + static inline bool relEq(const ValueT& v1, const ValueT& v2) + { return fabs(v1 - v2) <= TOLERANCE; } +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestQuadraticInterp); +CPPUNIT_TEST_SUITE_REGISTRATION(TestQuadraticInterp); +CPPUNIT_TEST_SUITE_REGISTRATION(TestQuadraticInterp); + + +//////////////////////////////////////// + + +/// Specialization for Vec3s grids +template<> +inline openvdb::Vec3s +TestQuadraticInterp::constValue(double d) +{ + return openvdb::Vec3s(float(d), float(d), float(d)); +} + +/// Specialization for Vec3s grids +template<> +inline bool +TestQuadraticInterp::relEq( + const openvdb::Vec3s& v1, const openvdb::Vec3s& v2) +{ + return v1.eq(v2, float(TOLERANCE)); +} + + +/// Sample the given tree at various locations and assert if +/// any of the sampled values don't match the expected values. +template +void +TestQuadraticInterp::executeTest(const GridPtr& grid, + const TestVal* testVals, size_t numVals) const +{ + openvdb::tools::GridSampler interpolator(*grid); + //openvdb::tools::QuadraticInterp interpolator(*tree); + + for (size_t i = 0; i < numVals; ++i) { + const TestVal& val = testVals[i]; + const ValueT actual = interpolator.sampleVoxel(val.x, val.y, val.z); + if (!relEq(val.expected, actual)) { + std::ostringstream ostr; + ostr << std::setprecision(10) + << "sampleVoxel(" << val.x << ", " << val.y << ", " << val.z + << "): expected " << val.expected << ", got " << actual; + CPPUNIT_FAIL(ostr.str()); + } + } +} + + +template +void +TestQuadraticInterp::test() +{ + const ValueT + one = constValue(1), + two = constValue(2), + three = constValue(3), + four = constValue(4), + fillValue = constValue(256); + + GridPtr grid(new GridType(fillValue)); + typename GridType::TreeType& tree = grid->tree(); + + tree.setValue(openvdb::Coord(10, 10, 10), one); + + tree.setValue(openvdb::Coord(11, 10, 10), two); + tree.setValue(openvdb::Coord(11, 11, 10), two); + tree.setValue(openvdb::Coord(10, 11, 10), two); + tree.setValue(openvdb::Coord( 9, 11, 10), two); + tree.setValue(openvdb::Coord( 9, 10, 10), two); + tree.setValue(openvdb::Coord( 9, 9, 10), two); + tree.setValue(openvdb::Coord(10, 9, 10), two); + tree.setValue(openvdb::Coord(11, 9, 10), two); + + tree.setValue(openvdb::Coord(10, 10, 11), three); + tree.setValue(openvdb::Coord(11, 10, 11), three); + tree.setValue(openvdb::Coord(11, 11, 11), three); + tree.setValue(openvdb::Coord(10, 11, 11), three); + tree.setValue(openvdb::Coord( 9, 11, 11), three); + tree.setValue(openvdb::Coord( 9, 10, 11), three); + tree.setValue(openvdb::Coord( 9, 9, 11), three); + tree.setValue(openvdb::Coord(10, 9, 11), three); + tree.setValue(openvdb::Coord(11, 9, 11), three); + + tree.setValue(openvdb::Coord(10, 10, 9), four); + tree.setValue(openvdb::Coord(11, 10, 9), four); + tree.setValue(openvdb::Coord(11, 11, 9), four); + tree.setValue(openvdb::Coord(10, 11, 9), four); + tree.setValue(openvdb::Coord( 9, 11, 9), four); + tree.setValue(openvdb::Coord( 9, 10, 9), four); + tree.setValue(openvdb::Coord( 9, 9, 9), four); + tree.setValue(openvdb::Coord(10, 9, 9), four); + tree.setValue(openvdb::Coord(11, 9, 9), four); + + const TestVal testVals[] = { + { 10.5f, 10.5f, 10.5f, constValue(1.703125) }, + { 10.0f, 10.0f, 10.0f, one }, + { 11.0f, 10.0f, 10.0f, two }, + { 11.0f, 11.0f, 10.0f, two }, + { 11.0f, 11.0f, 11.0f, three }, + { 9.0f, 11.0f, 9.0f, four }, + { 9.0f, 10.0f, 9.0f, four }, + { 10.1f, 10.0f, 10.0f, constValue(1.01) }, + { 10.8f, 10.8f, 10.8f, constValue(2.513344) }, + { 10.1f, 10.8f, 10.5f, constValue(1.8577) }, + { 10.8f, 10.1f, 10.5f, constValue(1.8577) }, + { 10.5f, 10.1f, 10.8f, constValue(2.2927) }, + { 10.5f, 10.8f, 10.1f, constValue(1.6977) }, + }; + const size_t numVals = sizeof(testVals) / sizeof(TestVal); + + executeTest(grid, testVals, numVals); +} + + +template +void +TestQuadraticInterp::testConstantValues() +{ + const ValueT + two = constValue(2), + fillValue = constValue(256); + + GridPtr grid(new GridType(fillValue)); + typename GridType::TreeType& tree = grid->tree(); + + tree.setValue(openvdb::Coord(10, 10, 10), two); + + tree.setValue(openvdb::Coord(11, 10, 10), two); + tree.setValue(openvdb::Coord(11, 11, 10), two); + tree.setValue(openvdb::Coord(10, 11, 10), two); + tree.setValue(openvdb::Coord( 9, 11, 10), two); + tree.setValue(openvdb::Coord( 9, 10, 10), two); + tree.setValue(openvdb::Coord( 9, 9, 10), two); + tree.setValue(openvdb::Coord(10, 9, 10), two); + tree.setValue(openvdb::Coord(11, 9, 10), two); + + tree.setValue(openvdb::Coord(10, 10, 11), two); + tree.setValue(openvdb::Coord(11, 10, 11), two); + tree.setValue(openvdb::Coord(11, 11, 11), two); + tree.setValue(openvdb::Coord(10, 11, 11), two); + tree.setValue(openvdb::Coord( 9, 11, 11), two); + tree.setValue(openvdb::Coord( 9, 10, 11), two); + tree.setValue(openvdb::Coord( 9, 9, 11), two); + tree.setValue(openvdb::Coord(10, 9, 11), two); + tree.setValue(openvdb::Coord(11, 9, 11), two); + + tree.setValue(openvdb::Coord(10, 10, 9), two); + tree.setValue(openvdb::Coord(11, 10, 9), two); + tree.setValue(openvdb::Coord(11, 11, 9), two); + tree.setValue(openvdb::Coord(10, 11, 9), two); + tree.setValue(openvdb::Coord( 9, 11, 9), two); + tree.setValue(openvdb::Coord( 9, 10, 9), two); + tree.setValue(openvdb::Coord( 9, 9, 9), two); + tree.setValue(openvdb::Coord(10, 9, 9), two); + tree.setValue(openvdb::Coord(11, 9, 9), two); + + const TestVal testVals[] = { + { 10.5f, 10.5f, 10.5f, two }, + { 10.0f, 10.0f, 10.0f, two }, + { 10.1f, 10.0f, 10.0f, two }, + { 10.8f, 10.8f, 10.8f, two }, + { 10.1f, 10.8f, 10.5f, two }, + { 10.8f, 10.1f, 10.5f, two }, + { 10.5f, 10.1f, 10.8f, two }, + { 10.5f, 10.8f, 10.1f, two } + }; + const size_t numVals = sizeof(testVals) / sizeof(TestVal); + + executeTest(grid, testVals, numVals); +} + + +template +void +TestQuadraticInterp::testFillValues() +{ + const ValueT fillValue = constValue(256); + + GridPtr grid(new GridType(fillValue)); + + const TestVal testVals[] = { + { 10.5f, 10.5f, 10.5f, fillValue }, + { 10.0f, 10.0f, 10.0f, fillValue }, + { 10.1f, 10.0f, 10.0f, fillValue }, + { 10.8f, 10.8f, 10.8f, fillValue }, + { 10.1f, 10.8f, 10.5f, fillValue }, + { 10.8f, 10.1f, 10.5f, fillValue }, + { 10.5f, 10.1f, 10.8f, fillValue }, + { 10.5f, 10.8f, 10.1f, fillValue } + }; + const size_t numVals = sizeof(testVals) / sizeof(TestVal); + + executeTest(grid, testVals, numVals); +} + + +template +void +TestQuadraticInterp::testNegativeIndices() +{ + const ValueT + one = constValue(1), + two = constValue(2), + three = constValue(3), + four = constValue(4), + fillValue = constValue(256); + + GridPtr grid(new GridType(fillValue)); + typename GridType::TreeType& tree = grid->tree(); + + tree.setValue(openvdb::Coord(-10, -10, -10), one); + + tree.setValue(openvdb::Coord(-11, -10, -10), two); + tree.setValue(openvdb::Coord(-11, -11, -10), two); + tree.setValue(openvdb::Coord(-10, -11, -10), two); + tree.setValue(openvdb::Coord( -9, -11, -10), two); + tree.setValue(openvdb::Coord( -9, -10, -10), two); + tree.setValue(openvdb::Coord( -9, -9, -10), two); + tree.setValue(openvdb::Coord(-10, -9, -10), two); + tree.setValue(openvdb::Coord(-11, -9, -10), two); + + tree.setValue(openvdb::Coord(-10, -10, -11), three); + tree.setValue(openvdb::Coord(-11, -10, -11), three); + tree.setValue(openvdb::Coord(-11, -11, -11), three); + tree.setValue(openvdb::Coord(-10, -11, -11), three); + tree.setValue(openvdb::Coord( -9, -11, -11), three); + tree.setValue(openvdb::Coord( -9, -10, -11), three); + tree.setValue(openvdb::Coord( -9, -9, -11), three); + tree.setValue(openvdb::Coord(-10, -9, -11), three); + tree.setValue(openvdb::Coord(-11, -9, -11), three); + + tree.setValue(openvdb::Coord(-10, -10, -9), four); + tree.setValue(openvdb::Coord(-11, -10, -9), four); + tree.setValue(openvdb::Coord(-11, -11, -9), four); + tree.setValue(openvdb::Coord(-10, -11, -9), four); + tree.setValue(openvdb::Coord( -9, -11, -9), four); + tree.setValue(openvdb::Coord( -9, -10, -9), four); + tree.setValue(openvdb::Coord( -9, -9, -9), four); + tree.setValue(openvdb::Coord(-10, -9, -9), four); + tree.setValue(openvdb::Coord(-11, -9, -9), four); + + const TestVal testVals[] = { + { -10.5f, -10.5f, -10.5f, constValue(-104.75586) }, + { -10.0f, -10.0f, -10.0f, one }, + { -11.0f, -10.0f, -10.0f, two }, + { -11.0f, -11.0f, -10.0f, two }, + { -11.0f, -11.0f, -11.0f, three }, + { -9.0f, -11.0f, -9.0f, four }, + { -9.0f, -10.0f, -9.0f, four }, + { -10.1f, -10.0f, -10.0f, constValue(-10.28504) }, + { -10.8f, -10.8f, -10.8f, constValue(-62.84878) }, + { -10.1f, -10.8f, -10.5f, constValue(-65.68951) }, + { -10.8f, -10.1f, -10.5f, constValue(-65.68951) }, + { -10.5f, -10.1f, -10.8f, constValue(-65.40736) }, + { -10.5f, -10.8f, -10.1f, constValue(-66.30510) }, + }; + const size_t numVals = sizeof(testVals) / sizeof(TestVal); + + executeTest(grid, testVals, numVals); +} diff --git a/openvdb/unittest/TestQuantizedUnitVec.cc b/openvdb/unittest/TestQuantizedUnitVec.cc new file mode 100644 index 00000000..5547ba6d --- /dev/null +++ b/openvdb/unittest/TestQuantizedUnitVec.cc @@ -0,0 +1,146 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +class TestQuantizedUnitVec: public CppUnit::TestFixture +{ +public: + CPPUNIT_TEST_SUITE(TestQuantizedUnitVec); + CPPUNIT_TEST(testQuantization); + CPPUNIT_TEST_SUITE_END(); + + void testQuantization(); + +private: + // Generate a random number in the range [0, 1]. + double randNumber() { return double(rand()) / (double(RAND_MAX) + 1.0); } +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestQuantizedUnitVec); + + +//////////////////////////////////////// + + +namespace { +const uint16_t + MASK_XSIGN = 0x8000, // 1000000000000000 + MASK_YSIGN = 0x4000, // 0100000000000000 + MASK_ZSIGN = 0x2000; // 0010000000000000 +} + + +//////////////////////////////////////// + + +void +TestQuantizedUnitVec::testQuantization() +{ + using namespace openvdb; + using namespace openvdb::math; + + // + // Check sign bits + // + Vec3s unitVec = Vec3s(-1.0, -1.0, -1.0); + unitVec.normalize(); + + uint16_t quantizedVec = QuantizedUnitVec::pack(unitVec); + + CPPUNIT_ASSERT((quantizedVec & MASK_XSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_YSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_ZSIGN)); + + unitVec[0] = -unitVec[0]; + unitVec[2] = -unitVec[2]; + quantizedVec = QuantizedUnitVec::pack(unitVec); + + CPPUNIT_ASSERT(!(quantizedVec & MASK_XSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_YSIGN)); + CPPUNIT_ASSERT(!(quantizedVec & MASK_ZSIGN)); + + unitVec[1] = -unitVec[1]; + quantizedVec = QuantizedUnitVec::pack(unitVec); + + CPPUNIT_ASSERT(!(quantizedVec & MASK_XSIGN)); + CPPUNIT_ASSERT(!(quantizedVec & MASK_YSIGN)); + CPPUNIT_ASSERT(!(quantizedVec & MASK_ZSIGN)); + + QuantizedUnitVec::flipSignBits(quantizedVec); + + CPPUNIT_ASSERT((quantizedVec & MASK_XSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_YSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_ZSIGN)); + + unitVec[2] = -unitVec[2]; + quantizedVec = QuantizedUnitVec::pack(unitVec); + QuantizedUnitVec::flipSignBits(quantizedVec); + + CPPUNIT_ASSERT((quantizedVec & MASK_XSIGN)); + CPPUNIT_ASSERT((quantizedVec & MASK_YSIGN)); + CPPUNIT_ASSERT(!(quantizedVec & MASK_ZSIGN)); + + // + // Check conversion error + // + const double tol = 0.05; // component error tolerance + + const int numNormals = 40000; + + + // init + srand(0); + const int n = int(std::sqrt(double(numNormals))); + const double xScale = (2.0 * M_PI) / double(n); + const double yScale = M_PI / double(n); + + double x, y, theta, phi; + Vec3s n0, n1; + + // generate random normals, by uniformly distributing points on a unit-sphere. + + // loop over a [0 to n) x [0 to n) grid. + for (int a = 0; a < n; ++a) { + for (int b = 0; b < n; ++b) { + + // jitter, move to random pos. inside the current cell + x = double(a) + randNumber(); + y = double(b) + randNumber(); + + // remap to a lat/long map + theta = y * yScale; // [0 to PI] + phi = x * xScale; // [0 to 2PI] + + // convert to cartesian coordinates on a unit sphere. + // spherical coordinate triplet (r=1, theta, phi) + n0[0] = float(std::sin(theta)*std::cos(phi)); + n0[1] = float(std::sin(theta)*std::sin(phi)); + n0[2] = float(std::cos(theta)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, n0.length(), 1e-6); + + n1 = QuantizedUnitVec::unpack(QuantizedUnitVec::pack(n0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, n1.length(), 1e-6); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(n0[0], n1[0], tol); + CPPUNIT_ASSERT_DOUBLES_EQUAL(n0[1], n1[1], tol); + CPPUNIT_ASSERT_DOUBLES_EQUAL(n0[2], n1[2], tol); + + float sumDiff = std::abs(n0[0] - n1[0]) + std::abs(n0[1] - n1[1]) + + std::abs(n0[2] - n1[2]); + + CPPUNIT_ASSERT(sumDiff < (2.0 * tol)); + } + } +} diff --git a/openvdb/unittest/TestQuat.cc b/openvdb/unittest/TestQuat.cc new file mode 100644 index 00000000..12d39586 --- /dev/null +++ b/openvdb/unittest/TestQuat.cc @@ -0,0 +1,282 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +using namespace openvdb::math; + +class TestQuat: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE( TestQuat ); + CPPUNIT_TEST( testConstructor ); + CPPUNIT_TEST( testAxisAngle ); + CPPUNIT_TEST( testOpPlus ); + CPPUNIT_TEST( testOpMinus ); + CPPUNIT_TEST( testOpMultiply ); + CPPUNIT_TEST( testInvert ); + CPPUNIT_TEST( testEulerAngles ); + CPPUNIT_TEST_SUITE_END(); + + void testConstructor(); + void testAxisAngle(); + void testOpPlus(); + void testOpMinus(); + void testOpMultiply(); + void testInvert(); + void testEulerAngles(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestQuat); + + +void +TestQuat::testConstructor() +{ + { + Quat qq(1.23f, 2.34f, 3.45f, 4.56f); + CPPUNIT_ASSERT( isExactlyEqual(qq.x(), 1.23f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.y(), 2.34f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.z(), 3.45f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.w(), 4.56f) ); + } + + { + float a[] = { 1.23f, 2.34f, 3.45f, 4.56f }; + Quat qq(a); + CPPUNIT_ASSERT( isExactlyEqual(qq.x(), 1.23f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.y(), 2.34f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.z(), 3.45f) ); + CPPUNIT_ASSERT( isExactlyEqual(qq.w(), 4.56f) ); + } +} + + +void +TestQuat::testAxisAngle() +{ + float TOL = 1e-6f; + + Quat q1(1.0f, 2.0f, 3.0f, 4.0f); + Quat q2(1.2f, 2.3f, 3.4f, 4.5f); + + Vec3s v(1, 2, 3); + v.normalize(); + float a = float(M_PI / 4.f); + + Quat q(v,a); + float b = q.angle(); + Vec3s vv = q.axis(); + + CPPUNIT_ASSERT( isApproxEqual(a, b, TOL) ); + CPPUNIT_ASSERT( v.eq(vv, TOL) ); + + q1.setAxisAngle(v,a); + b = q1.angle(); + vv = q1.axis(); + CPPUNIT_ASSERT( isApproxEqual(a, b, TOL) ); + CPPUNIT_ASSERT( v.eq(vv, TOL) ); +} + + +void +TestQuat::testOpPlus() +{ + Quat q1(1.0f, 2.0f, 3.0f, 4.0f); + Quat q2(1.2f, 2.3f, 3.4f, 4.5f); + + Quat q = q1 + q2; + + float + x=q1.x()+q2.x(), y=q1.y()+q2.y(), z=q1.z()+q2.z(), w=q1.w()+q2.w(); + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); + + q = q1; + q += q2; + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); + + q.add(q1,q2); + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); +} + + +void +TestQuat::testOpMinus() +{ + Quat q1(1.0f, 2.0f, 3.0f, 4.0f); + Quat q2(1.2f, 2.3f, 3.4f, 4.5f); + + Quat q = q1 - q2; + + float + x=q1.x()-q2.x(), y=q1.y()-q2.y(), z=q1.z()-q2.z(), w=q1.w()-q2.w(); + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); + + q = q1; + q -= q2; + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); + + q.sub(q1,q2); + CPPUNIT_ASSERT( isExactlyEqual(q.x(), x) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), y) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), z) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), w) ); +} + + +void +TestQuat::testOpMultiply() +{ + Quat q1(1.0f, 2.0f, 3.0f, 4.0f); + Quat q2(1.2f, 2.3f, 3.4f, 4.5f); + + Quat q = q1 * 1.5f; + + CPPUNIT_ASSERT( isExactlyEqual(q.x(), float(1.5f)*q1.x()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), float(1.5f)*q1.y()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), float(1.5f)*q1.z()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), float(1.5f)*q1.w()) ); + + q = q1; + q *= 1.5f; + CPPUNIT_ASSERT( isExactlyEqual(q.x(), float(1.5f)*q1.x()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), float(1.5f)*q1.y()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), float(1.5f)*q1.z()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), float(1.5f)*q1.w()) ); + + q.scale(1.5f, q1); + CPPUNIT_ASSERT( isExactlyEqual(q.x(), float(1.5f)*q1.x()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.y(), float(1.5f)*q1.y()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.z(), float(1.5f)*q1.z()) ); + CPPUNIT_ASSERT( isExactlyEqual(q.w(), float(1.5f)*q1.w()) ); +} + + +void +TestQuat::testInvert() +{ + float TOL = 1e-6f; + + Quat q1(1.0f, 2.0f, 3.0f, 4.0f); + Quat q2(1.2f, 2.3f, 3.4f, 4.5f); + + + q1 = q2; + q2 = q2.inverse(); + + Quat q = q1*q2; + + CPPUNIT_ASSERT( q.eq( Quat(0,0,0,1), TOL ) ); + + q1.normalize(); + q2 = q1.conjugate(); + q = q1*q2; + CPPUNIT_ASSERT( q.eq( Quat(0,0,0,1), TOL ) ); +} + + +void +TestQuat::testEulerAngles() +{ + + { + double TOL = 1e-7; + + Mat4d rx, ry, rz; + const double angle1 = 20. * M_PI / 180.; + const double angle2 = 64. * M_PI / 180.; + const double angle3 = 125. *M_PI / 180.; + rx.setToRotation(Vec3d(1,0,0), angle1); + ry.setToRotation(Vec3d(0,1,0), angle2); + rz.setToRotation(Vec3d(0,0,1), angle3); + + Mat4d r = rx * ry * rz; + + const Quat rot(r.getMat3()); + Vec3d result = rot.eulerAngles(ZYX_ROTATION); + + rx.setToRotation(Vec3d(1,0,0), result[0]); + ry.setToRotation(Vec3d(0,1,0), result[1]); + rz.setToRotation(Vec3d(0,0,1), result[2]); + + Mat4d rtest = rx * ry * rz; + + CPPUNIT_ASSERT(r.eq(rtest, TOL)); + } + + { + double TOL = 1e-7; + + Mat4d rx, ry, rz; + const double angle1 = 20. * M_PI / 180.; + const double angle2 = 64. * M_PI / 180.; + const double angle3 = 125. *M_PI / 180.; + rx.setToRotation(Vec3d(1,0,0), angle1); + ry.setToRotation(Vec3d(0,1,0), angle2); + rz.setToRotation(Vec3d(0,0,1), angle3); + + Mat4d r = rz * ry * rx; + + const Quat rot(r.getMat3()); + Vec3d result = rot.eulerAngles(XYZ_ROTATION); + + rx.setToRotation(Vec3d(1,0,0), result[0]); + ry.setToRotation(Vec3d(0,1,0), result[1]); + rz.setToRotation(Vec3d(0,0,1), result[2]); + + Mat4d rtest = rz * ry * rx; + + CPPUNIT_ASSERT(r.eq(rtest, TOL)); + } + + { + double TOL = 1e-7; + + Mat4d rx, ry, rz; + const double angle1 = 20. * M_PI / 180.; + const double angle2 = 64. * M_PI / 180.; + const double angle3 = 125. *M_PI / 180.; + rx.setToRotation(Vec3d(1,0,0), angle1); + ry.setToRotation(Vec3d(0,1,0), angle2); + rz.setToRotation(Vec3d(0,0,1), angle3); + + Mat4d r = rz * rx * ry; + + const Quat rot(r.getMat3()); + Vec3d result = rot.eulerAngles(YXZ_ROTATION); + + rx.setToRotation(Vec3d(1,0,0), result[0]); + ry.setToRotation(Vec3d(0,1,0), result[1]); + rz.setToRotation(Vec3d(0,0,1), result[2]); + + Mat4d rtest = rz * rx * ry; + + CPPUNIT_ASSERT(r.eq(rtest, TOL)); + } + + { + const Quat rot(X_AXIS, 1.0); + Vec3s result = rot.eulerAngles(XZY_ROTATION); + CPPUNIT_ASSERT_EQUAL(result, Vec3s(1,0,0)); + } + +} diff --git a/openvdb/unittest/TestRay.cc b/openvdb/unittest/TestRay.cc new file mode 100644 index 00000000..330c17b4 --- /dev/null +++ b/openvdb/unittest/TestRay.cc @@ -0,0 +1,463 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +#define ASSERT_DOUBLES_APPROX_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/1.e-6); + +class TestRay : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestRay); + CPPUNIT_TEST(testInfinity); + CPPUNIT_TEST(testRay); + CPPUNIT_TEST(testTimeSpan); + CPPUNIT_TEST(testDDA); + CPPUNIT_TEST_SUITE_END(); + + void testInfinity(); + void testRay(); + void testTimeSpan(); + void testDDA(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestRay); + +// the Ray class makes use of infinity=1/0 so we test for it +void +TestRay::testInfinity() +{ + // This code generates compiler warnings which is why it's not + // enabled by default. + /* + const double one=1, zero = 0, infinity = one / zero; + CPPUNIT_ASSERT_DOUBLES_EQUAL( infinity , infinity,0);//not a NAN + CPPUNIT_ASSERT_DOUBLES_EQUAL( infinity , infinity+1,0);//not a NAN + CPPUNIT_ASSERT_DOUBLES_EQUAL( infinity , infinity*10,0);//not a NAN + CPPUNIT_ASSERT( zero < infinity); + CPPUNIT_ASSERT( zero > -infinity); + CPPUNIT_ASSERT_DOUBLES_EQUAL( zero , one/infinity,0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( zero , -one/infinity,0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( infinity , one/zero,0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-infinity , -one/zero,0); + + std::cerr << "inf: " << infinity << "\n"; + std::cerr << "1 / inf: " << one / infinity << "\n"; + std::cerr << "1 / (-inf): " << one / (-infinity) << "\n"; + std::cerr << " inf * 0: " << infinity * 0 << "\n"; + std::cerr << "-inf * 0: " << (-infinity) * 0 << "\n"; + std::cerr << "(inf): " << (bool)(infinity) << "\n"; + std::cerr << "inf == inf: " << (infinity == infinity) << "\n"; + std::cerr << "inf > 0: " << (infinity > 0) << "\n"; + std::cerr << "-inf > 0: " << ((-infinity) > 0) << "\n"; + */ +} + +void TestRay::testRay() +{ + using namespace openvdb; + typedef double RealT; + typedef math::Ray RayT; + typedef RayT::Vec3T Vec3T; + typedef math::BBox BBoxT; + + {//default constructor + RayT ray; + CPPUNIT_ASSERT(ray.eye() == Vec3T(0,0,0)); + CPPUNIT_ASSERT(ray.dir() == Vec3T(1,0,0)); + ASSERT_DOUBLES_APPROX_EQUAL( math::Delta::value(), ray.t0()); + ASSERT_DOUBLES_APPROX_EQUAL( std::numeric_limits::max(), ray.t1()); + } + + {// simple construction + + Vec3T eye(1.5,1.5,1.5), dir(1.5,1.5,1.5); dir.normalize(); + RealT t0=0.1, t1=12589.0; + + RayT ray(eye, dir, t0, t1); + CPPUNIT_ASSERT(ray.eye()==eye); + CPPUNIT_ASSERT(ray.dir()==dir); + ASSERT_DOUBLES_APPROX_EQUAL( t0, ray.t0()); + ASSERT_DOUBLES_APPROX_EQUAL( t1, ray.t1()); + } + + {// test transformation + math::Transform::Ptr xform = math::Transform::createLinearTransform(); + + xform->preRotate(M_PI, math::Y_AXIS ); + xform->postTranslate(math::Vec3d(1, 2, 3)); + xform->preScale(Vec3R(0.1, 0.2, 0.4)); + + Vec3T eye(9,1,1), dir(1,2,0); + dir.normalize(); + RealT t0=0.1, t1=12589.0; + + RayT ray0(eye, dir, t0, t1); + CPPUNIT_ASSERT( ray0.test(t0)); + CPPUNIT_ASSERT( ray0.test(t1)); + CPPUNIT_ASSERT( ray0.test(0.5*(t0+t1))); + CPPUNIT_ASSERT(!ray0.test(t0-1)); + CPPUNIT_ASSERT(!ray0.test(t1+1)); + //std::cerr << "Ray0: " << ray0 << std::endl; + RayT ray1 = ray0.applyMap( *(xform->baseMap()) ); + //std::cerr << "Ray1: " << ray1 << std::endl; + RayT ray2 = ray1.applyInverseMap( *(xform->baseMap()) ); + //std::cerr << "Ray2: " << ray2 << std::endl; + + ASSERT_DOUBLES_APPROX_EQUAL( eye[0], ray2.eye()[0]); + ASSERT_DOUBLES_APPROX_EQUAL( eye[1], ray2.eye()[1]); + ASSERT_DOUBLES_APPROX_EQUAL( eye[2], ray2.eye()[2]); + + ASSERT_DOUBLES_APPROX_EQUAL( dir[0], ray2.dir()[0]); + ASSERT_DOUBLES_APPROX_EQUAL( dir[1], ray2.dir()[1]); + ASSERT_DOUBLES_APPROX_EQUAL( dir[2], ray2.dir()[2]); + + ASSERT_DOUBLES_APPROX_EQUAL( dir[0], 1.0/ray2.invDir()[0]); + ASSERT_DOUBLES_APPROX_EQUAL( dir[1], 1.0/ray2.invDir()[1]); + ASSERT_DOUBLES_APPROX_EQUAL( dir[2], 1.0/ray2.invDir()[2]); + + ASSERT_DOUBLES_APPROX_EQUAL( t0, ray2.t0()); + ASSERT_DOUBLES_APPROX_EQUAL( t1, ray2.t1()); + } + + {// test transformation + + // This is the index to world transform + math::Transform::Ptr xform = math::Transform::createLinearTransform(); + xform->postRotate(M_PI, math::Y_AXIS ); + xform->postTranslate(math::Vec3d(1, 2, 3)); + xform->postScale(Vec3R(0.1, 0.1, 0.1));//voxel size + + // Define a ray in world space + Vec3T eye(9,1,1), dir(1,2,0); + dir.normalize(); + RealT t0=0.1, t1=12589.0; + RayT ray0(eye, dir, t0, t1); + //std::cerr << "\nWorld Ray0: " << ray0 << std::endl; + CPPUNIT_ASSERT( ray0.test(t0)); + CPPUNIT_ASSERT( ray0.test(t1)); + CPPUNIT_ASSERT( ray0.test(0.5*(t0+t1))); + CPPUNIT_ASSERT(!ray0.test(t0-1)); + CPPUNIT_ASSERT(!ray0.test(t1+1)); + Vec3T xyz0[3] = {ray0.start(), ray0.mid(), ray0.end()}; + + // Transform the ray to index space + RayT ray1 = ray0.applyInverseMap( *(xform->baseMap()) ); + //std::cerr << "\nIndex Ray1: " << ray1 << std::endl; + Vec3T xyz1[3] = {ray1.start(), ray1.mid(), ray1.end()}; + + for (int i=0; i<3; ++i) { + Vec3T pos = xform->baseMap()->applyMap(xyz1[i]); + //std::cerr << "world0 ="< DDAType; + const RayType::Vec3T eye( 0, 0, 0); + for (int s = -1; s<=1; s+=2) { + for (int a = 0; a<3; ++a) { + const int d[3]={s*(a==0), s*(a==1), s*(a==2)}; + const RayType::Vec3T dir(d[0], d[1], d[2]); + RayType ray(eye, dir); + DDAType dda(ray); + //std::cerr << "\nray: "<= h.min(j) && data[i] < h.max(j)) bin[j]++; + } + for (int i=0; i<5; ++i) CPPUNIT_ASSERT_EQUAL(bin[i],int(h.count(i))); + //h.print("test"); + } + {//Test print of Histogram + openvdb::math::Stats s; + const int N=500000; + for (int i=0; i + void operator()(const GridT::ValueOnCIter& it, StatsT& stats) const + { + typedef openvdb::math::ISGradient GradT; + if (it.isVoxelValue()) { + stats.add(GradT::result(acc, it.getCoord()).length()); + } else { + openvdb::CoordBBox bbox = it.getBoundingBox(); + openvdb::Coord xyz; + int &x = xyz[0], &y = xyz[1], &z = xyz[2]; + for (x = bbox.min()[0]; x <= bbox.max()[0]; ++x) { + for (y = bbox.min()[1]; y <= bbox.max()[1]; ++y) { + for (z = bbox.min()[2]; z <= bbox.max()[2]; ++z) { + stats.add(GradT::result(acc, xyz).length()); + } + } + } + } + } +}; + +} // unnamed namespace + +void +TestStats::testGridExtrema() +{ + using namespace openvdb; + + const int DIM = 109; + { + const float background = 0.0; + FloatGrid grid(background); + { + // Compute active value statistics for a grid with a single active voxel. + grid.tree().setValue(Coord(0), /*value=*/42.0); + math::Extrema ex = tools::extrema(grid.cbeginValueOn()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(42.0, ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(42.0, ex.max(), /*tolerance=*/0.0); + + // Compute inactive value statistics for a grid with only background voxels. + grid.tree().setValueOff(Coord(0), background); + ex = tools::extrema(grid.cbeginValueOff()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ex.max(), /*tolerance=*/0.0); + } + + // Compute active value statistics for a grid with two active voxel populations + // of the same size but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), /*value=*/1.0); + grid.fill(CoordBBox::createCube(Coord(-300), DIM), /*value=*/-3.0); + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Extrema ex = tools::extrema(grid.cbeginValueOn(), threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(-3.0), ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), ex.max(), /*tolerance=*/0.0); + } + + // Compute active value statistics for just the positive values. + for (int threaded = 0; threaded <= 1; ++threaded) { + struct Local { + static void addIfPositive(const FloatGrid::ValueOnCIter& it, math::Extrema& ex) + { + const float f = *it; + if (f > 0.0) { + if (it.isVoxelValue()) ex.add(f); + else ex.add(f, it.getVoxelCount()); + } + } + }; + math::Extrema ex = + tools::extrema(grid.cbeginValueOn(), &Local::addIfPositive, threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), ex.max(), /*tolerance=*/0.0); + } + + // Compute active value statistics for the first-order gradient. + for (int threaded = 0; threaded <= 1; ++threaded) { + // First, using a custom ValueOp... + math::Extrema ex = tools::extrema(grid.cbeginValueOn(), GradOp(grid), threaded); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + double(9.0 + 9.0 + 9.0), ex.max() * ex.max(), /*tol=*/1.0e-3); + // max gradient is (dx, dy, dz) = (-3 - 0, -3 - 0, -3 - 0) + + // ...then using tools::opStatistics(). + typedef math::ISOpMagnitude > MathOp; + ex = tools::opExtrema(grid.cbeginValueOn(), MathOp(), threaded); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + double(9.0 + 9.0 + 9.0), ex.max() * ex.max(), /*tolerance=*/1.0e-3); + // max gradient is (dx, dy, dz) = (-3 - 0, -3 - 0, -3 - 0) + } + } + { + const Vec3s background(0.0); + Vec3SGrid grid(background); + + // Compute active vector magnitude statistics for a vector-valued grid + // with two active voxel populations of the same size but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), Vec3s(3.0, 0.0, 4.0)); // length = 5 + grid.fill(CoordBBox::createCube(Coord(-300), DIM), Vec3s(1.0, 2.0, 2.0)); // length = 3 + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Extrema ex = tools::extrema(grid.cbeginValueOn(), threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(3.0), ex.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(5.0), ex.max(), /*tolerance=*/0.0); + } + } +} + +void +TestStats::testGridStats() +{ + using namespace openvdb; + + const int DIM = 109; + { + const float background = 0.0; + FloatGrid grid(background); + { + // Compute active value statistics for a grid with a single active voxel. + grid.tree().setValue(Coord(0), /*value=*/42.0); + math::Stats stats = tools::statistics(grid.cbeginValueOn()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(42.0, stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(42.0, stats.max(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(42.0, stats.mean(), /*tolerance=*/1.0e-8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, stats.variance(), /*tolerance=*/1.0e-8); + + // Compute inactive value statistics for a grid with only background voxels. + grid.tree().setValueOff(Coord(0), background); + stats = tools::statistics(grid.cbeginValueOff()); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, stats.max(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, stats.mean(), /*tolerance=*/1.0e-8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, stats.variance(), /*tolerance=*/1.0e-8); + } + + // Compute active value statistics for a grid with two active voxel populations + // of the same size but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), /*value=*/1.0); + grid.fill(CoordBBox::createCube(Coord(-300), DIM), /*value=*/-3.0); + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Stats stats = tools::statistics(grid.cbeginValueOn(), threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(-3.0), stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), stats.max(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(-1.0), stats.mean(), /*tolerance=*/1.0e-8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(4.0), stats.variance(), /*tolerance=*/1.0e-8); + } + + // Compute active value statistics for just the positive values. + for (int threaded = 0; threaded <= 1; ++threaded) { + struct Local { + static void addIfPositive(const FloatGrid::ValueOnCIter& it, math::Stats& stats) + { + const float f = *it; + if (f > 0.0) { + if (it.isVoxelValue()) stats.add(f); + else stats.add(f, it.getVoxelCount()); + } + } + }; + math::Stats stats = + tools::statistics(grid.cbeginValueOn(), &Local::addIfPositive, threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), stats.max(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), stats.mean(), /*tolerance=*/1.0e-8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), stats.variance(), /*tolerance=*/1.0e-8); + } + + // Compute active value statistics for the first-order gradient. + for (int threaded = 0; threaded <= 1; ++threaded) { + // First, using a custom ValueOp... + math::Stats stats = tools::statistics(grid.cbeginValueOn(), GradOp(grid), threaded); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + double(9.0 + 9.0 + 9.0), stats.max() * stats.max(), /*tol=*/1.0e-3); + // max gradient is (dx, dy, dz) = (-3 - 0, -3 - 0, -3 - 0) + + // ...then using tools::opStatistics(). + typedef math::ISOpMagnitude > MathOp; + stats = tools::opStatistics(grid.cbeginValueOn(), MathOp(), threaded); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0.0), stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL( + double(9.0 + 9.0 + 9.0), stats.max() * stats.max(), /*tolerance=*/1.0e-3); + // max gradient is (dx, dy, dz) = (-3 - 0, -3 - 0, -3 - 0) + } + } + { + const Vec3s background(0.0); + Vec3SGrid grid(background); + + // Compute active vector magnitude statistics for a vector-valued grid + // with two active voxel populations of the same size but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), Vec3s(3.0, 0.0, 4.0)); // length = 5 + grid.fill(CoordBBox::createCube(Coord(-300), DIM), Vec3s(1.0, 2.0, 2.0)); // length = 3 + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Stats stats = tools::statistics(grid.cbeginValueOn(), threaded); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(3.0), stats.min(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(5.0), stats.max(), /*tolerance=*/0.0); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(4.0), stats.mean(), /*tolerance=*/1.0e-8); + CPPUNIT_ASSERT_DOUBLES_EQUAL(double(1.0), stats.variance(), /*tolerance=*/1.0e-8); + } + } +} + + +namespace { + +template +inline void +doTestGridOperatorStats(const GridT& grid, const OpT& op) +{ + openvdb::math::Stats serialStats = + openvdb::tools::opStatistics(grid.cbeginValueOn(), op, /*threaded=*/false); + + openvdb::math::Stats parallelStats = + openvdb::tools::opStatistics(grid.cbeginValueOn(), op, /*threaded=*/true); + + // Verify that the results from threaded and serial runs are equivalent. + CPPUNIT_ASSERT_EQUAL(serialStats.size(), parallelStats.size()); + ASSERT_DOUBLES_EXACTLY_EQUAL(serialStats.min(), parallelStats.min()); + ASSERT_DOUBLES_EXACTLY_EQUAL(serialStats.max(), parallelStats.max()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(serialStats.mean(), parallelStats.mean(), /*tolerance=*/1.0e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(serialStats.variance(), parallelStats.variance(), 1.0e-6); +} + +} + +void +TestStats::testGridOperatorStats() +{ + using namespace openvdb; + + typedef math::UniformScaleMap MapType; + MapType map; + + const int DIM = 109; + { + // Test operations on a scalar grid. + const float background = 0.0; + FloatGrid grid(background); + grid.fill(CoordBBox::createCube(Coord(0), DIM), /*value=*/1.0); + grid.fill(CoordBBox::createCube(Coord(-300), DIM), /*value=*/-3.0); + + { // Magnitude of gradient computed via first-order differencing + typedef math::MapAdapter, MapType>, double> OpT; + doTestGridOperatorStats(grid, OpT(map)); + } + { // Magnitude of index-space gradient computed via first-order differencing + typedef math::ISOpMagnitude > OpT; + doTestGridOperatorStats(grid, OpT()); + } + { // Laplacian of index-space gradient computed via second-order central differencing + typedef math::ISLaplacian OpT; + doTestGridOperatorStats(grid, OpT()); + } + } + { + // Test operations on a vector grid. + const Vec3s background(0.0); + Vec3SGrid grid(background); + grid.fill(CoordBBox::createCube(Coord(0), DIM), Vec3s(3.0, 0.0, 4.0)); // length = 5 + grid.fill(CoordBBox::createCube(Coord(-300), DIM), Vec3s(1.0, 2.0, 2.0)); // length = 3 + + { // Divergence computed via first-order differencing + typedef math::MapAdapter, double> OpT; + doTestGridOperatorStats(grid, OpT(map)); + } + { // Magnitude of curl computed via first-order differencing + typedef math::MapAdapter, MapType>, double> OpT; + doTestGridOperatorStats(grid, OpT(map)); + } + { // Magnitude of index-space curl computed via first-order differencing + typedef math::ISOpMagnitude > OpT; + doTestGridOperatorStats(grid, OpT()); + } + } +} + + +void +TestStats::testGridHistogram() +{ + using namespace openvdb; + + const int DIM = 109; + { + const float background = 0.0; + FloatGrid grid(background); + { + const double value = 42.0; + + // Compute a histogram of the active values of a grid with a single active voxel. + grid.tree().setValue(Coord(0), value); + math::Histogram hist = tools::histogram(grid.cbeginValueOn(), + /*min=*/0.0, /*max=*/100.0); + + for (int i = 0, N = int(hist.numBins()); i < N; ++i) { + uint64_t expected = ((hist.min(i) <= value && value <= hist.max(i)) ? 1 : 0); + CPPUNIT_ASSERT_EQUAL(expected, hist.count(i)); + } + } + + // Compute a histogram of the active values of a grid with two + // active voxel populations of the same size but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), /*value=*/1.0); + grid.fill(CoordBBox::createCube(Coord(-300), DIM), /*value=*/3.0); + + CPPUNIT_ASSERT_EQUAL(uint64_t(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Histogram hist = tools::histogram(grid.cbeginValueOn(), + /*min=*/0.0, /*max=*/10.0, /*numBins=*/9, threaded); + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), hist.size()); + for (int i = 0, N = int(hist.numBins()); i < N; ++i) { + if (i == 0 || i == 2) { + CPPUNIT_ASSERT_EQUAL(uint64_t(DIM * DIM * DIM), hist.count(i)); + } else { + CPPUNIT_ASSERT_EQUAL(uint64_t(0), hist.count(i)); + } + } + } + } + { + const Vec3s background(0.0); + Vec3SGrid grid(background); + + // Compute a histogram of vector magnitudes of the active values of a + // vector-valued grid with two active voxel populations of the same size + // but two different values. + grid.fill(CoordBBox::createCube(Coord(0), DIM), Vec3s(3.0, 0.0, 4.0)); // length = 5 + grid.fill(CoordBBox::createCube(Coord(-300), DIM), Vec3s(1.0, 2.0, 2.0)); // length = 3 + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), grid.activeVoxelCount()); + + for (int threaded = 0; threaded <= 1; ++threaded) { + math::Histogram hist = tools::histogram(grid.cbeginValueOn(), + /*min=*/0.0, /*max=*/10.0, /*numBins=*/9, threaded); + + CPPUNIT_ASSERT_EQUAL(Index64(2 * DIM * DIM * DIM), hist.size()); + for (int i = 0, N = int(hist.numBins()); i < N; ++i) { + if (i == 2 || i == 4) { + CPPUNIT_ASSERT_EQUAL(uint64_t(DIM * DIM * DIM), hist.count(i)); + } else { + CPPUNIT_ASSERT_EQUAL(uint64_t(0), hist.count(i)); + } + } + } + } +} diff --git a/openvdb/unittest/TestStream.cc b/openvdb/unittest/TestStream.cc new file mode 100644 index 00000000..0efc5c66 --- /dev/null +++ b/openvdb/unittest/TestStream.cc @@ -0,0 +1,248 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include // for remove() +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(a, b) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((a), (b), /*tolerance=*/0.0); + + +class TestStream: public CppUnit::TestCase +{ +public: + void setUp() override; + void tearDown() override; + + CPPUNIT_TEST_SUITE(TestStream); + CPPUNIT_TEST(testWrite); + CPPUNIT_TEST(testRead); + CPPUNIT_TEST(testFileReadFromStream); + CPPUNIT_TEST_SUITE_END(); + + void testWrite(); + void testRead(); + void testFileReadFromStream(); + +private: + static openvdb::GridPtrVecPtr createTestGrids(openvdb::MetaMap::Ptr&); + static void verifyTestGrids(openvdb::GridPtrVecPtr, openvdb::MetaMap::Ptr); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestStream); + + +//////////////////////////////////////// + + +void +TestStream::setUp() +{ + openvdb::uninitialize(); + + openvdb::Int32Grid::registerGrid(); + openvdb::FloatGrid::registerGrid(); + + openvdb::StringMetadata::registerType(); + openvdb::Int32Metadata::registerType(); + openvdb::Int64Metadata::registerType(); + openvdb::Vec3IMetadata::registerType(); + openvdb::io::DelayedLoadMetadata::registerType(); + + // Register maps + openvdb::math::MapRegistry::clear(); + openvdb::math::AffineMap::registerMap(); + openvdb::math::ScaleMap::registerMap(); + openvdb::math::UniformScaleMap::registerMap(); + openvdb::math::TranslationMap::registerMap(); + openvdb::math::ScaleTranslateMap::registerMap(); + openvdb::math::UniformScaleTranslateMap::registerMap(); + openvdb::math::NonlinearFrustumMap::registerMap(); +} + + +void +TestStream::tearDown() +{ + openvdb::uninitialize(); +} + + +//////////////////////////////////////// + + +openvdb::GridPtrVecPtr +TestStream::createTestGrids(openvdb::MetaMap::Ptr& metadata) +{ + using namespace openvdb; + + // Create trees + Int32Tree::Ptr tree1(new Int32Tree(1)); + FloatTree::Ptr tree2(new FloatTree(2.0)); + + // Set some values + tree1->setValue(Coord(0, 0, 0), 5); + tree1->setValue(Coord(100, 0, 0), 6); + tree2->setValue(Coord(0, 0, 0), 10); + tree2->setValue(Coord(0, 100, 0), 11); + + // Create grids + GridBase::Ptr + grid1 = createGrid(tree1), + grid2 = createGrid(tree1), // instance of grid1 + grid3 = createGrid(tree2); + grid1->setName("density"); + grid2->setName("density_copy"); + grid3->setName("temperature"); + + // Create transforms + math::Transform::Ptr trans1 = math::Transform::createLinearTransform(0.1); + math::Transform::Ptr trans2 = math::Transform::createLinearTransform(0.1); + grid1->setTransform(trans1); + grid2->setTransform(trans2); + grid3->setTransform(trans2); + + metadata.reset(new MetaMap); + metadata->insertMeta("author", StringMetadata("Einstein")); + metadata->insertMeta("year", Int32Metadata(2009)); + + GridPtrVecPtr grids(new GridPtrVec); + grids->push_back(grid1); + grids->push_back(grid2); + grids->push_back(grid3); + + return grids; +} + + +void +TestStream::verifyTestGrids(openvdb::GridPtrVecPtr grids, openvdb::MetaMap::Ptr meta) +{ + using namespace openvdb; + + CPPUNIT_ASSERT(grids.get() != nullptr); + CPPUNIT_ASSERT(meta.get() != nullptr); + + // Verify the metadata. + CPPUNIT_ASSERT_EQUAL(2, int(meta->metaCount())); + CPPUNIT_ASSERT_EQUAL(std::string("Einstein"), meta->metaValue("author")); + CPPUNIT_ASSERT_EQUAL(2009, meta->metaValue("year")); + + // Verify the grids. + CPPUNIT_ASSERT_EQUAL(3, int(grids->size())); + + GridBase::Ptr grid = findGridByName(*grids, "density"); + CPPUNIT_ASSERT(grid.get() != nullptr); + Int32Tree::Ptr density = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(density.get() != nullptr); + + grid.reset(); + grid = findGridByName(*grids, "density_copy"); + CPPUNIT_ASSERT(grid.get() != nullptr); + CPPUNIT_ASSERT(gridPtrCast(grid)->treePtr().get() != nullptr); + // Verify that "density_copy" is an instance of (i.e., shares a tree with) "density". + CPPUNIT_ASSERT_EQUAL(density, gridPtrCast(grid)->treePtr()); + + grid.reset(); + grid = findGridByName(*grids, "temperature"); + CPPUNIT_ASSERT(grid.get() != nullptr); + FloatTree::Ptr temperature = gridPtrCast(grid)->treePtr(); + CPPUNIT_ASSERT(temperature.get() != nullptr); + + ASSERT_DOUBLES_EXACTLY_EQUAL(5, density->getValue(Coord(0, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(6, density->getValue(Coord(100, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(10, temperature->getValue(Coord(0, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(11, temperature->getValue(Coord(0, 100, 0))); +} + + +//////////////////////////////////////// + + +void +TestStream::testWrite() +{ + using namespace openvdb; + + // Create test grids and stream them to a string. + MetaMap::Ptr meta; + GridPtrVecPtr grids = createTestGrids(meta); + std::ostringstream ostr(std::ios_base::binary); + io::Stream(ostr).write(*grids, *meta); + //std::ofstream file("debug.vdb2", std::ios_base::binary); + //file << ostr.str(); + + // Stream the grids back in. + std::istringstream is(ostr.str(), std::ios_base::binary); + io::Stream strm(is); + meta = strm.getMetadata(); + grids = strm.getGrids(); + + verifyTestGrids(grids, meta); +} + + +void +TestStream::testRead() +{ + using namespace openvdb; + + // Create test grids and write them to a file. + MetaMap::Ptr meta; + GridPtrVecPtr grids = createTestGrids(meta); + const char* filename = "something.vdb2"; + io::File(filename).write(*grids, *meta); + SharedPtr scopedFile(filename, ::remove); + + // Stream the grids back in. + std::ifstream is(filename, std::ios_base::binary); + io::Stream strm(is); + meta = strm.getMetadata(); + grids = strm.getGrids(); + + verifyTestGrids(grids, meta); +} + + +/// Stream grids to a file using io::Stream, then read the file back using io::File. +void +TestStream::testFileReadFromStream() +{ + using namespace openvdb; + + MetaMap::Ptr meta; + GridPtrVecPtr grids; + + // Create test grids and stream them to a file (and then close the file). + const char* filename = "something.vdb2"; + SharedPtr scopedFile(filename, ::remove); + { + std::ofstream os(filename, std::ios_base::binary); + grids = createTestGrids(meta); + io::Stream(os).write(*grids, *meta); + } + + // Read the grids back in. + io::File file(filename); + CPPUNIT_ASSERT(file.inputHasGridOffsets()); + CPPUNIT_ASSERT_THROW(file.getGrids(), IoError); + + file.open(); + meta = file.getMetadata(); + grids = file.getGrids(); + + CPPUNIT_ASSERT(!file.inputHasGridOffsets()); + CPPUNIT_ASSERT(meta.get() != nullptr); + CPPUNIT_ASSERT(grids.get() != nullptr); + CPPUNIT_ASSERT(!grids->empty()); + + verifyTestGrids(grids, meta); +} diff --git a/openvdb/unittest/TestStreamCompression.cc b/openvdb/unittest/TestStreamCompression.cc new file mode 100644 index 00000000..470a92c2 --- /dev/null +++ b/openvdb/unittest/TestStreamCompression.cc @@ -0,0 +1,660 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + +#include // io::COMPRESS_BLOSC + +#ifdef __clang__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wunused-macros" +#endif +// Boost.Interprocess uses a header-only portion of Boost.DateTime +#define BOOST_DATE_TIME_NO_LIB +#ifdef __clang__ +#pragma GCC diagnostic pop +#endif +#include +#include +#include +#include +#include +#include +#include +#include // for BOOST_VERSION + +#include + +#ifdef _MSC_VER +#include // open_existing_file(), close_file() +// boost::interprocess::detail was renamed to boost::interprocess::ipcdetail in Boost 1.48. +// Ensure that both namespaces exist. +namespace boost { namespace interprocess { namespace detail {} namespace ipcdetail {} } } +#include +#else +#include // for struct stat +#include // for stat() +#include // for unlink() +#endif + +#include +#include // for std::iota() + +#ifdef OPENVDB_USE_BLOSC +#include +// A Blosc optimization introduced in 1.11.0 uses a slightly smaller block size for +// HCR codecs (LZ4, ZLIB, ZSTD), which otherwise fails a few regression test cases +#if BLOSC_VERSION_MAJOR > 1 || (BLOSC_VERSION_MAJOR == 1 && BLOSC_VERSION_MINOR > 10) +#define BLOSC_HCR_BLOCKSIZE_OPTIMIZATION +#endif +// Blosc 1.14+ writes backwards-compatible data by default. +// http://blosc.org/posts/new-forward-compat-policy/ +#if BLOSC_VERSION_MAJOR > 1 || (BLOSC_VERSION_MAJOR == 1 && BLOSC_VERSION_MINOR >= 14) +#define BLOSC_BACKWARDS_COMPATIBLE +#endif +#endif + +/// @brief io::MappedFile has a private constructor, so this unit tests uses a matching proxy +class ProxyMappedFile +{ +public: + explicit ProxyMappedFile(const std::string& filename) + : mImpl(new Impl(filename)) { } + +private: + class Impl + { + public: + Impl(const std::string& filename) + : mMap(filename.c_str(), boost::interprocess::read_only) + , mRegion(mMap, boost::interprocess::read_only) + { + mLastWriteTime = 0; + const char* regionFilename = mMap.get_name(); +#ifdef _MSC_VER + using namespace boost::interprocess::detail; + using namespace boost::interprocess::ipcdetail; + using openvdb::Index64; + + if (void* fh = open_existing_file(regionFilename, boost::interprocess::read_only)) { + FILETIME mtime; + if (GetFileTime(fh, nullptr, nullptr, &mtime)) { + mLastWriteTime = (Index64(mtime.dwHighDateTime) << 32) | mtime.dwLowDateTime; + } + close_file(fh); + } +#else + struct stat info; + if (0 == ::stat(regionFilename, &info)) { + mLastWriteTime = openvdb::Index64(info.st_mtime); + } +#endif + } + + using Notifier = std::function; + boost::interprocess::file_mapping mMap; + boost::interprocess::mapped_region mRegion; + bool mAutoDelete = false; + Notifier mNotifier; + mutable tbb::atomic mLastWriteTime; + }; // class Impl + std::unique_ptr mImpl; +}; // class ProxyMappedFile + +using namespace openvdb; +using namespace openvdb::compression; + +class TestStreamCompression: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestStreamCompression); + CPPUNIT_TEST(testBlosc); + CPPUNIT_TEST(testPagedStreams); + + CPPUNIT_TEST_SUITE_END(); + + void testBlosc(); + void testPagedStreams(); +}; // class TestStreamCompression + +CPPUNIT_TEST_SUITE_REGISTRATION(TestStreamCompression); + + +//////////////////////////////////////// + + +void +TestStreamCompression::testBlosc() +{ + // ensure that the library and unit tests are both built with or without Blosc enabled +#ifdef OPENVDB_USE_BLOSC + CPPUNIT_ASSERT(bloscCanCompress()); +#else + CPPUNIT_ASSERT(!bloscCanCompress()); +#endif + + const int count = 256; + + { // valid buffer + // compress + + std::unique_ptr uncompressedBuffer(new int[count]); + + for (int i = 0; i < count; i++) { + uncompressedBuffer.get()[i] = i / 2; + } + + size_t uncompressedBytes = count * sizeof(int); + size_t compressedBytes; + + size_t testCompressedBytes = bloscCompressedSize( + reinterpret_cast(uncompressedBuffer.get()), uncompressedBytes); + + std::unique_ptr compressedBuffer = bloscCompress( + reinterpret_cast(uncompressedBuffer.get()), uncompressedBytes, compressedBytes); + +#ifdef OPENVDB_USE_BLOSC + CPPUNIT_ASSERT(compressedBytes < uncompressedBytes); + CPPUNIT_ASSERT(compressedBuffer); + CPPUNIT_ASSERT_EQUAL(testCompressedBytes, compressedBytes); + + // uncompressedSize + + CPPUNIT_ASSERT_EQUAL(uncompressedBytes, bloscUncompressedSize(compressedBuffer.get())); + + // decompress + + std::unique_ptr newUncompressedBuffer = + bloscDecompress(compressedBuffer.get(), uncompressedBytes); + + // incorrect number of expected bytes + CPPUNIT_ASSERT_THROW(newUncompressedBuffer = + bloscDecompress(compressedBuffer.get(), 1), openvdb::RuntimeError); + + CPPUNIT_ASSERT(newUncompressedBuffer); +#else + CPPUNIT_ASSERT(!compressedBuffer); + CPPUNIT_ASSERT_EQUAL(testCompressedBytes, size_t(0)); + + // uncompressedSize + + CPPUNIT_ASSERT_THROW(bloscUncompressedSize(compressedBuffer.get()), openvdb::RuntimeError); + + // decompress + + std::unique_ptr newUncompressedBuffer; + CPPUNIT_ASSERT_THROW( + newUncompressedBuffer = bloscDecompress(compressedBuffer.get(), uncompressedBytes), + openvdb::RuntimeError); + + CPPUNIT_ASSERT(!newUncompressedBuffer); +#endif + } + + { // one value (below minimum bytes) + std::unique_ptr uncompressedBuffer(new int[1]); + uncompressedBuffer.get()[0] = 10; + + size_t compressedBytes; + + std::unique_ptr compressedBuffer = bloscCompress( + reinterpret_cast(uncompressedBuffer.get()), sizeof(int), compressedBytes); + + CPPUNIT_ASSERT(!compressedBuffer); + CPPUNIT_ASSERT_EQUAL(compressedBytes, size_t(0)); + } + + { // padded buffer + std::unique_ptr largeBuffer(new char[2048]); + + for (int paddedCount = 1; paddedCount < 256; paddedCount++) { + + std::unique_ptr newTest(new char[paddedCount]); + for (int i = 0; i < paddedCount; i++) newTest.get()[i] = char(0); + +#ifdef OPENVDB_USE_BLOSC + size_t compressedBytes; + std::unique_ptr compressedBuffer = bloscCompress( + newTest.get(), paddedCount, compressedBytes); + + // compress into a large buffer to check for any padding issues + size_t compressedSizeBytes; + bloscCompress(largeBuffer.get(), compressedSizeBytes, size_t(2048), + newTest.get(), paddedCount); + + // regardless of compression, these numbers should always match + CPPUNIT_ASSERT_EQUAL(compressedSizeBytes, compressedBytes); + + // no compression performed due to buffer being too small + if (paddedCount <= BLOSC_MINIMUM_BYTES) { + CPPUNIT_ASSERT(!compressedBuffer); + } + else { + CPPUNIT_ASSERT(compressedBuffer); + CPPUNIT_ASSERT(compressedBytes > 0); + CPPUNIT_ASSERT(int(compressedBytes) < paddedCount); + + std::unique_ptr uncompressedBuffer = bloscDecompress( + compressedBuffer.get(), paddedCount); + + CPPUNIT_ASSERT(uncompressedBuffer); + + for (int i = 0; i < paddedCount; i++) { + CPPUNIT_ASSERT_EQUAL((uncompressedBuffer.get())[i], newTest[i]); + } + } +#endif + } + } + + { // invalid buffer (out of range) + + // compress + + std::vector smallBuffer; + smallBuffer.reserve(count); + + for (int i = 0; i < count; i++) smallBuffer[i] = i; + + size_t invalidBytes = INT_MAX - 1; + + size_t testCompressedBytes = bloscCompressedSize( + reinterpret_cast(&smallBuffer[0]), invalidBytes); + + CPPUNIT_ASSERT_EQUAL(testCompressedBytes, size_t(0)); + + std::unique_ptr buffer = bloscCompress( + reinterpret_cast(&smallBuffer[0]), invalidBytes, testCompressedBytes); + + CPPUNIT_ASSERT(!buffer); + CPPUNIT_ASSERT_EQUAL(testCompressedBytes, size_t(0)); + + // decompress + +#ifdef OPENVDB_USE_BLOSC + std::unique_ptr compressedBuffer = bloscCompress( + reinterpret_cast(&smallBuffer[0]), count * sizeof(int), testCompressedBytes); + + CPPUNIT_ASSERT_THROW(buffer = bloscDecompress( + reinterpret_cast(compressedBuffer.get()), invalidBytes - 16), + openvdb::RuntimeError); + + CPPUNIT_ASSERT(!buffer); + + CPPUNIT_ASSERT_THROW(bloscDecompress( + reinterpret_cast(compressedBuffer.get()), count * sizeof(int) + 1), + openvdb::RuntimeError); +#endif + } + + { // uncompressible buffer + const int uncompressedCount = 32; + + std::vector values; + values.reserve(uncompressedCount); // 128 bytes + + for (int i = 0; i < uncompressedCount; i++) values.push_back(i*10000); + + std::random_shuffle(values.begin(), values.end()); + + std::unique_ptr uncompressedBuffer(new int[values.size()]); + + for (size_t i = 0; i < values.size(); i++) uncompressedBuffer.get()[i] = values[i]; + + size_t uncompressedBytes = values.size() * sizeof(int); + size_t compressedBytes; + + std::unique_ptr compressedBuffer = bloscCompress( + reinterpret_cast(uncompressedBuffer.get()), uncompressedBytes, compressedBytes); + + CPPUNIT_ASSERT(!compressedBuffer); + CPPUNIT_ASSERT_EQUAL(compressedBytes, size_t(0)); + } +} + + +void +TestStreamCompression::testPagedStreams() +{ + { // one small value + std::ostringstream ostr(std::ios_base::binary); + PagedOutputStream ostream(ostr); + + int foo = 5; + ostream.write(reinterpret_cast(&foo), sizeof(int)); + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(0)); + + ostream.flush(); + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(sizeof(int))); + } + + { // small values up to page threshold + std::ostringstream ostr(std::ios_base::binary); + PagedOutputStream ostream(ostr); + + for (int i = 0; i < PageSize; i++) { + uint8_t oneByte = 255; + ostream.write(reinterpret_cast(&oneByte), sizeof(uint8_t)); + } + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(0)); + + std::vector values; + values.assign(PageSize, uint8_t(255)); + size_t compressedSize = compression::bloscCompressedSize( + reinterpret_cast(&values[0]), PageSize); + + uint8_t oneMoreByte(255); + ostream.write(reinterpret_cast(&oneMoreByte), sizeof(char)); + + if (compressedSize == 0) { + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(PageSize)); + } + else { + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(compressedSize)); + } + } + + { // one large block at exactly page threshold + std::ostringstream ostr(std::ios_base::binary); + PagedOutputStream ostream(ostr); + + std::vector values; + values.assign(PageSize, uint8_t(255)); + ostream.write(reinterpret_cast(&values[0]), values.size()); + + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(0)); + } + + { // two large blocks at page threshold + 1 byte + std::ostringstream ostr(std::ios_base::binary); + PagedOutputStream ostream(ostr); + + std::vector values; + values.assign(PageSize + 1, uint8_t(255)); + ostream.write(reinterpret_cast(&values[0]), values.size()); + + size_t compressedSize = compression::bloscCompressedSize( + reinterpret_cast(&values[0]), values.size()); + +#ifndef OPENVDB_USE_BLOSC + compressedSize = values.size(); +#endif + + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(compressedSize)); + + ostream.write(reinterpret_cast(&values[0]), values.size()); + + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(compressedSize * 2)); + + uint8_t oneMoreByte(255); + ostream.write(reinterpret_cast(&oneMoreByte), sizeof(uint8_t)); + + ostream.flush(); + + CPPUNIT_ASSERT_EQUAL(ostr.tellp(), std::streampos(compressedSize * 2 + 1)); + } + + { // one full page + std::stringstream ss(std::ios_base::out | std::ios_base::in | std::ios_base::binary); + + // write + + PagedOutputStream ostreamSizeOnly(ss); + ostreamSizeOnly.setSizeOnly(true); + + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(0)); + + std::vector values; + values.resize(PageSize); + std::iota(values.begin(), values.end(), 0); // ascending integer values + ostreamSizeOnly.write(reinterpret_cast(&values[0]), values.size()); + ostreamSizeOnly.flush(); + +#ifdef OPENVDB_USE_BLOSC + // two integers - compressed size and uncompressed size + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(sizeof(int)*2)); +#else + // one integer - uncompressed size + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(sizeof(int))); +#endif + + PagedOutputStream ostream(ss); + ostream.write(reinterpret_cast(&values[0]), values.size()); + ostream.flush(); + +#ifdef OPENVDB_USE_BLOSC +#ifdef BLOSC_BACKWARDS_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(5400)); +#else +#ifdef BLOSC_HCR_BLOCKSIZE_OPTIMIZATION + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(4422)); +#else + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(4452)); +#endif +#endif +#else + CPPUNIT_ASSERT_EQUAL(ss.tellp(), std::streampos(PageSize+sizeof(int))); +#endif + + // read + + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(0)); + + PagedInputStream istream(ss); + istream.setSizeOnly(true); + + PageHandle::Ptr handle = istream.createHandle(values.size()); + +#ifdef OPENVDB_USE_BLOSC + // two integers - compressed size and uncompressed size + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(sizeof(int)*2)); +#else + // one integer - uncompressed size + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(sizeof(int))); +#endif + + istream.read(handle, values.size(), false); + +#ifdef OPENVDB_USE_BLOSC +#ifdef BLOSC_BACKWARDS_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(5400)); +#else +#ifdef BLOSC_HCR_BLOCKSIZE_OPTIMIZATION + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(4422)); +#else + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(4452)); +#endif +#endif +#else + CPPUNIT_ASSERT_EQUAL(ss.tellg(), std::streampos(PageSize+sizeof(int))); +#endif + + std::unique_ptr newValues(reinterpret_cast(handle->read().release())); + + CPPUNIT_ASSERT(newValues); + + for (size_t i = 0; i < values.size(); i++) { + CPPUNIT_ASSERT_EQUAL(values[i], newValues.get()[i]); + } + } + + std::string tempDir; + if (const char* dir = std::getenv("TMPDIR")) tempDir = dir; +#ifdef _MSC_VER + if (tempDir.empty()) { + char tempDirBuffer[MAX_PATH+1]; + int tempDirLen = GetTempPath(MAX_PATH+1, tempDirBuffer); + CPPUNIT_ASSERT(tempDirLen > 0 && tempDirLen <= MAX_PATH); + tempDir = tempDirBuffer; + } +#else + if (tempDir.empty()) tempDir = P_tmpdir; +#endif + + { + std::string filename = tempDir + "/openvdb_page1"; + io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata); + + { // ascending values up to 10 million written in blocks of PageSize/3 + std::ofstream fileout(filename.c_str(), std::ios_base::binary); + + io::setStreamMetadataPtr(fileout, streamMetadata); + io::setDataCompression(fileout, openvdb::io::COMPRESS_BLOSC); + + std::vector values; + values.resize(10*1000*1000); + std::iota(values.begin(), values.end(), 0); // ascending integer values + + // write page sizes + + PagedOutputStream ostreamSizeOnly(fileout); + ostreamSizeOnly.setSizeOnly(true); + + CPPUNIT_ASSERT_EQUAL(fileout.tellp(), std::streampos(0)); + + int increment = PageSize/3; + + for (size_t i = 0; i < values.size(); i += increment) { + if (size_t(i+increment) > values.size()) { + ostreamSizeOnly.write( + reinterpret_cast(&values[0]+i), values.size() - i); + } + else { + ostreamSizeOnly.write(reinterpret_cast(&values[0]+i), increment); + } + } + ostreamSizeOnly.flush(); + +#ifdef OPENVDB_USE_BLOSC + int pages = static_cast(fileout.tellp() / (sizeof(int)*2)); +#else + int pages = static_cast(fileout.tellp() / (sizeof(int))); +#endif + + CPPUNIT_ASSERT_EQUAL(pages, 10); + + // write + + PagedOutputStream ostream(fileout); + + for (size_t i = 0; i < values.size(); i += increment) { + if (size_t(i+increment) > values.size()) { + ostream.write(reinterpret_cast(&values[0]+i), values.size() - i); + } + else { + ostream.write(reinterpret_cast(&values[0]+i), increment); + } + } + + ostream.flush(); + +#ifdef OPENVDB_USE_BLOSC +#ifdef BLOSC_BACKWARDS_COMPATIBLE + CPPUNIT_ASSERT_EQUAL(fileout.tellp(), std::streampos(51480)); +#else +#ifdef BLOSC_HCR_BLOCKSIZE_OPTIMIZATION + CPPUNIT_ASSERT_EQUAL(fileout.tellp(), std::streampos(42424)); +#else + CPPUNIT_ASSERT_EQUAL(fileout.tellp(), std::streampos(42724)); +#endif +#endif +#else + CPPUNIT_ASSERT_EQUAL(fileout.tellp(), std::streampos(values.size()+sizeof(int)*pages)); +#endif + + // abuse File being a friend of MappedFile to get around the private constructor + ProxyMappedFile* proxy = new ProxyMappedFile(filename); + SharedPtr mappedFile(reinterpret_cast(proxy)); + + // read + + std::ifstream filein(filename.c_str(), std::ios_base::in | std::ios_base::binary); + io::setStreamMetadataPtr(filein, streamMetadata); + io::setMappedFilePtr(filein, mappedFile); + + CPPUNIT_ASSERT_EQUAL(filein.tellg(), std::streampos(0)); + + PagedInputStream istreamSizeOnly(filein); + istreamSizeOnly.setSizeOnly(true); + + std::vector handles; + + for (size_t i = 0; i < values.size(); i += increment) { + if (size_t(i+increment) > values.size()) { + handles.push_back(istreamSizeOnly.createHandle(values.size() - i)); + } + else { + handles.push_back(istreamSizeOnly.createHandle(increment)); + } + } + +#ifdef OPENVDB_USE_BLOSC + // two integers - compressed size and uncompressed size + CPPUNIT_ASSERT_EQUAL(filein.tellg(), std::streampos(pages*sizeof(int)*2)); +#else + // one integer - uncompressed size + CPPUNIT_ASSERT_EQUAL(filein.tellg(), std::streampos(pages*sizeof(int))); +#endif + + PagedInputStream istream(filein); + + int pageHandle = 0; + + for (size_t i = 0; i < values.size(); i += increment) { + if (size_t(i+increment) > values.size()) { + istream.read(handles[pageHandle++], values.size() - i); + } + else { + istream.read(handles[pageHandle++], increment); + } + } + + // first three handles live in the same page + + Page& page0 = handles[0]->page(); + Page& page1 = handles[1]->page(); + Page& page2 = handles[2]->page(); + Page& page3 = handles[3]->page(); + + CPPUNIT_ASSERT(page0.isOutOfCore()); + CPPUNIT_ASSERT(page1.isOutOfCore()); + CPPUNIT_ASSERT(page2.isOutOfCore()); + CPPUNIT_ASSERT(page3.isOutOfCore()); + + handles[0]->read(); + + // store the Page shared_ptr + + Page::Ptr page = handles[0]->mPage; + + // verify use count is four (one plus three handles) + + CPPUNIT_ASSERT_EQUAL(page.use_count(), long(4)); + + // on reading from the first handle, all pages referenced + // in the first three handles are in-core + + CPPUNIT_ASSERT(!page0.isOutOfCore()); + CPPUNIT_ASSERT(!page1.isOutOfCore()); + CPPUNIT_ASSERT(!page2.isOutOfCore()); + CPPUNIT_ASSERT(page3.isOutOfCore()); + + handles[1]->read(); + + CPPUNIT_ASSERT(handles[0]->mPage); + + handles[2]->read(); + + handles.erase(handles.begin()); + handles.erase(handles.begin()); + handles.erase(handles.begin()); + + // after all three handles have been read, + // page should have just one use count (itself) + + CPPUNIT_ASSERT_EQUAL(page.use_count(), long(1)); + } + std::remove(filename.c_str()); + } +} diff --git a/openvdb/unittest/TestStringMetadata.cc b/openvdb/unittest/TestStringMetadata.cc new file mode 100644 index 00000000..6d319405 --- /dev/null +++ b/openvdb/unittest/TestStringMetadata.cc @@ -0,0 +1,43 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestStringMetadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestStringMetadata); + CPPUNIT_TEST(test); + CPPUNIT_TEST_SUITE_END(); + + void test(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestStringMetadata); + +void +TestStringMetadata::test() +{ + using namespace openvdb; + + Metadata::Ptr m(new StringMetadata("testing")); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("string") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("string") == 0); + + StringMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value().compare("testing") == 0); + s->value() = "testing2"; + CPPUNIT_ASSERT(s->value().compare("testing2") == 0); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value().compare("testing2") == 0); +} diff --git a/openvdb/unittest/TestTools.cc b/openvdb/unittest/TestTools.cc new file mode 100644 index 00000000..b0858c09 --- /dev/null +++ b/openvdb/unittest/TestTools.cc @@ -0,0 +1,2936 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include // for csunion() +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include +#include +#include // for std::sort +#include +#include + + +// Uncomment to test on models from our web-site +//#define TestTools_DATA_PATH "/home/kmu/src/openvdb/data/" +//#define TestTools_DATA_PATH "/usr/pic1/Data/OpenVDB/LevelSetModels/" + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + +class TestTools: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestTools); + CPPUNIT_TEST(testDilateVoxels); + CPPUNIT_TEST(testDilateActiveValues); + CPPUNIT_TEST(testErodeVoxels); + CPPUNIT_TEST(testActivate); + CPPUNIT_TEST(testFilter); + CPPUNIT_TEST(testFloatApply); + CPPUNIT_TEST(testInteriorMask); + CPPUNIT_TEST(testLevelSetSphere); + CPPUNIT_TEST(testLevelSetPlatonic); + CPPUNIT_TEST(testLevelSetAdvect); + CPPUNIT_TEST(testLevelSetMeasure); + CPPUNIT_TEST(testLevelSetMorph); + CPPUNIT_TEST(testMagnitude); + CPPUNIT_TEST(testMaskedMagnitude); + CPPUNIT_TEST(testNormalize); + CPPUNIT_TEST(testMaskedNormalize); + CPPUNIT_TEST(testPointAdvect); + CPPUNIT_TEST(testPointScatter); + CPPUNIT_TEST(testPrune); + CPPUNIT_TEST(testVolumeAdvect); + CPPUNIT_TEST(testTransformValues); + CPPUNIT_TEST(testVectorApply); + CPPUNIT_TEST(testAccumulate); + CPPUNIT_TEST(testUtil); + CPPUNIT_TEST(testVectorTransformer); + + CPPUNIT_TEST_SUITE_END(); + + void testDilateVoxels(); + void testDilateActiveValues(); + void testErodeVoxels(); + void testActivate(); + void testFilter(); + void testFloatApply(); + void testInteriorMask(); + void testLevelSetSphere(); + void testLevelSetPlatonic(); + void testLevelSetAdvect(); + void testLevelSetMeasure(); + void testLevelSetMorph(); + void testMagnitude(); + void testMaskedMagnitude(); + void testNormalize(); + void testMaskedNormalize(); + void testPointAdvect(); + void testPointScatter(); + void testPrune(); + void testVolumeAdvect(); + void testTransformValues(); + void testVectorApply(); + void testAccumulate(); + void testUtil(); + void testVectorTransformer(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTools); + + +#if 0 +namespace { + +// Simple helper class to write out numbered vdbs +template +class FrameWriter +{ +public: + FrameWriter(int version, typename GridT::Ptr grid): + mFrame(0), mVersion(version), mGrid(grid) + {} + + void operator()(const std::string& name, float time, size_t n) + { + std::ostringstream ostr; + ostr << name << "_" << mVersion << "_" << mFrame << ".vdb"; + openvdb::io::File file(ostr.str()); + openvdb::GridPtrVec grids; + grids.push_back(mGrid); + file.write(grids); + std::cerr << "\nWrote \"" << ostr.str() << "\" with time = " + << time << " after CFL-iterations = " << n << std::endl; + ++mFrame; + } + +private: + int mFrame, mVersion; + typename GridT::Ptr mGrid; +}; + +} // unnamed namespace +#endif + + +void +TestTools::testDilateVoxels() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Index32; + using openvdb::Index64; + + using Tree543f = openvdb::tree::Tree4::Type; + + Tree543f::Ptr tree(new Tree543f); + openvdb::tools::changeBackground(*tree, /*background=*/5.0); + CPPUNIT_ASSERT(tree->empty()); + + const openvdb::Index leafDim = Tree543f::LeafNodeType::DIM; + CPPUNIT_ASSERT_EQUAL(1 << 3, int(leafDim)); + + { + // Set and dilate a single voxel at the center of a leaf node. + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(7), tree->activeVoxelCount()); + } + { + // Create an active, leaf node-sized tile. + tree->clear(); + tree->fill(CoordBBox(Coord(0), Coord(leafDim - 1)), 1.0); + CPPUNIT_ASSERT_EQUAL(Index32(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + tree->setValue(Coord(leafDim, leafDim - 1, leafDim - 1), 1.0); + + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim + 1), + tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + openvdb::tools::dilateVoxels(*tree); + + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim + 1 + 5), + tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + } + { + // Set and dilate a single voxel at each of the eight corners of a leaf node. + for (int i = 0; i < 8; ++i) { + tree->clear(); + + openvdb::Coord xyz( + i & 1 ? leafDim - 1 : 0, + i & 2 ? leafDim - 1 : 0, + i & 4 ? leafDim - 1 : 0); + tree->setValue(xyz, 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(7), tree->activeVoxelCount()); + } + } + { + tree->clear(); + tree->setValue(Coord(0), 1.0); + tree->setValue(Coord( 1, 0, 0), 1.0); + tree->setValue(Coord(-1, 0, 0), 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(3), tree->activeVoxelCount()); + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(17), tree->activeVoxelCount()); + } + { + struct Info { int activeVoxelCount, leafCount, nonLeafCount; }; + Info iterInfo[11] = { + { 1, 1, 3 }, + { 7, 1, 3 }, + { 25, 1, 3 }, + { 63, 1, 3 }, + { 129, 4, 3 }, + { 231, 7, 9 }, + { 377, 7, 9 }, + { 575, 7, 9 }, + { 833, 10, 9 }, + { 1159, 16, 9 }, + { 1561, 19, 15 }, + }; + + // Perform repeated dilations, starting with a single voxel. + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + for (int i = 0; i < 11; ++i) { + CPPUNIT_ASSERT_EQUAL(iterInfo[i].activeVoxelCount, int(tree->activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(iterInfo[i].leafCount, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(iterInfo[i].nonLeafCount, int(tree->nonLeafCount())); + + openvdb::tools::dilateVoxels(*tree); + } + } + + {// dialte a narrow band of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + openvdb::tools::dilateVoxels(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() > count); + } + + {// dilate a fog volume of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + openvdb::tools::sdfToFogVolume(grid); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + //std::cerr << "\nBefore: active voxel count = " << count << std::endl; + //grid.print(std::cerr,5); + openvdb::tools::dilateVoxels(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() > count); + //std::cerr << "\nAfter: active voxel count = " + // << grid.tree().activeVoxelCount() << std::endl; + } +// {// Test a grid from a file that has proven to be challenging +// openvdb::initialize(); +// openvdb::io::File file("/usr/home/kmuseth/Data/vdb/dilation.vdb"); +// file.open(); +// openvdb::GridBase::Ptr baseGrid = file.readGrid(file.beginName().gridName()); +// file.close(); +// openvdb::FloatGrid::Ptr grid = openvdb::gridPtrCast(baseGrid); +// const openvdb::Index64 count = grid->tree().activeVoxelCount(); +// //std::cerr << "\nBefore: active voxel count = " << count << std::endl; +// //grid->print(std::cerr,5); +// openvdb::tools::dilateVoxels(grid->tree()); +// CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); +// //std::cerr << "\nAfter: active voxel count = " +// // << grid->tree().activeVoxelCount() << std::endl; +// } + + {// test dilateVoxels6 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::Morphology m(tree1); + m.dilateVoxels6(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n= openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=1) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6), tree1.activeVoxelCount()); + } + } + } + } + {// test dilateVoxels18 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::Morphology m(tree1); + m.dilateVoxels18(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n= openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=2) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12), tree1.activeVoxelCount()); + } + } + } + } + {// test dilateVoxels26 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::Morphology m(tree1); + m.dilateVoxels26(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n = openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=3) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12 + 8), tree1.activeVoxelCount()); + } + } + } + } + /* + // Performance test + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateVoxels6"); + openvdb::tools::dilateVoxels(grid->tree()); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + // grid->print(std::cerr, 3); + } + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateVoxels18"); + openvdb::tools::dilateVoxels(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + //grid->print(std::cerr, 3); + } + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateVoxels26"); + openvdb::tools::dilateVoxels(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + //grid->print(std::cerr, 3); + } + */ + +#ifdef TestTools_DATA_PATH + { + openvdb::initialize();//required whenever I/O of OpenVDB files is performed! + const std::string path(TestTools_DATA_PATH); + std::vector filenames; + filenames.push_back("armadillo.vdb"); + filenames.push_back("buddha.vdb"); + filenames.push_back("bunny.vdb"); + filenames.push_back("crawler.vdb"); + filenames.push_back("dragon.vdb"); + filenames.push_back("iss.vdb"); + filenames.push_back("utahteapot.vdb"); + openvdb::util::CpuTimer timer; + for ( size_t i=0; i\"" << filenames[i] << "\" =====================" << std::endl; + std::cerr << "Reading \"" << filenames[i] << "\" ...\n"; + openvdb::io::File file( path + filenames[i] ); + file.open(false);//disable delayed loading + openvdb::FloatGrid::Ptr model = openvdb::gridPtrCast(file.getGrids()->at(0)); + openvdb::MaskTree mask(model->tree(), false, true, openvdb::TopologyCopy() ); + timer.start("Calling dilateVoxels on grid"); + openvdb::tools::dilateVoxels(model->tree(), 1, openvdb::tools::NN_FACE); + timer.stop(); + //model->tree().print(std::cout, 3); + timer.start("Calling dilateVoxels on mask"); + openvdb::tools::dilateVoxels(mask, 1, openvdb::tools::NN_FACE); + timer.stop(); + //mask.print(std::cout, 3); + CPPUNIT_ASSERT_EQUAL(model->activeVoxelCount(), mask.activeVoxelCount()); + } + } +#endif +} + +void +TestTools::testDilateActiveValues() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Index32; + using openvdb::Index64; + + using Tree543f = openvdb::tree::Tree4::Type; + + Tree543f::Ptr tree(new Tree543f); + openvdb::tools::changeBackground(*tree, /*background=*/5.0); + CPPUNIT_ASSERT(tree->empty()); + + const openvdb::Index leafDim = Tree543f::LeafNodeType::DIM; + CPPUNIT_ASSERT_EQUAL(1 << 3, int(leafDim)); + + { + // Set and dilate a single voxel at the center of a leaf node. + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + openvdb::tools::dilateActiveValues(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(7), tree->activeVoxelCount()); + } + { + // Create an active, leaf node-sized tile. + tree->clear(); + tree->fill(CoordBBox(Coord(0), Coord(leafDim - 1)), 1.0); + CPPUNIT_ASSERT_EQUAL(Index32(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + // This has no effect + openvdb::tools::dilateActiveValues(*tree, 1, openvdb::tools::NN_FACE, openvdb::tools::IGNORE_TILES); + + CPPUNIT_ASSERT_EQUAL(Index32(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + } + { + // Create an active, leaf node-sized tile. + tree->clear(); + tree->fill(CoordBBox(Coord(0), Coord(leafDim - 1)), 1.0); + CPPUNIT_ASSERT_EQUAL(Index32(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + // Adds 6 faces of voxels, each of size leafDim^2 + openvdb::tools::dilateActiveValues(*tree, 1, openvdb::tools::NN_FACE, openvdb::tools::EXPAND_TILES); + + CPPUNIT_ASSERT_EQUAL(Index32(1+6), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64((leafDim + 6) * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree->activeTileCount()); + + } + { + // Create an active, leaf node-sized tile. + tree->clear(); + tree->fill(CoordBBox(Coord(0), Coord(leafDim - 1)), 1.0); + CPPUNIT_ASSERT_EQUAL(Index32(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64(leafDim * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + // Adds 6 faces of voxels, each of size leafDim^2 + openvdb::tools::dilateActiveValues(*tree, 1, openvdb::tools::NN_FACE, openvdb::tools::PRESERVE_TILES); + + CPPUNIT_ASSERT_EQUAL(Index32(6), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index64((leafDim + 6) * leafDim * leafDim), tree->activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeTileCount()); + + } + { + // Set and dilate a single voxel at each of the eight corners of a leaf node. + for (int i = 0; i < 8; ++i) { + tree->clear(); + + openvdb::Coord xyz( + i & 1 ? leafDim - 1 : 0, + i & 2 ? leafDim - 1 : 0, + i & 4 ? leafDim - 1 : 0); + tree->setValue(xyz, 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + + openvdb::tools::dilateActiveValues(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(7), tree->activeVoxelCount()); + } + } + { + tree->clear(); + tree->setValue(Coord(0), 1.0); + tree->setValue(Coord( 1, 0, 0), 1.0); + tree->setValue(Coord(-1, 0, 0), 1.0); + CPPUNIT_ASSERT_EQUAL(Index64(3), tree->activeVoxelCount()); + openvdb::tools::dilateActiveValues(*tree); + CPPUNIT_ASSERT_EQUAL(Index64(17), tree->activeVoxelCount()); + } + { + struct Info { int activeVoxelCount, leafCount, nonLeafCount; }; + Info iterInfo[11] = { + { 1, 1, 3 }, + { 7, 1, 3 }, + { 25, 1, 3 }, + { 63, 1, 3 }, + { 129, 4, 3 }, + { 231, 7, 9 }, + { 377, 7, 9 }, + { 575, 7, 9 }, + { 833, 10, 9 }, + { 1159, 16, 9 }, + { 1561, 19, 15 }, + }; + + // Perform repeated dilations, starting with a single voxel. + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + for (int i = 0; i < 11; ++i) { + CPPUNIT_ASSERT_EQUAL(iterInfo[i].activeVoxelCount, int(tree->activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(iterInfo[i].leafCount, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(iterInfo[i].nonLeafCount, int(tree->nonLeafCount())); + + openvdb::tools::dilateActiveValues(*tree); + } + } + + {// dialte a narrow band of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + openvdb::tools::dilateActiveValues(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() > count); + } + + {// dilate a fog volume of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + openvdb::tools::sdfToFogVolume(grid); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + //std::cerr << "\nBefore: active voxel count = " << count << std::endl; + //grid.print(std::cerr,5); + openvdb::tools::dilateActiveValues(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() > count); + //std::cerr << "\nAfter: active voxel count = " + // << grid.tree().activeVoxelCount() << std::endl; + } +// {// Test a grid from a file that has proven to be challenging +// openvdb::initialize(); +// openvdb::io::File file("/usr/home/kmuseth/Data/vdb/dilation.vdb"); +// file.open(); +// openvdb::GridBase::Ptr baseGrid = file.readGrid(file.beginName().gridName()); +// file.close(); +// openvdb::FloatGrid::Ptr grid = openvdb::gridPtrCast(baseGrid); +// const openvdb::Index64 count = grid->tree().activeVoxelCount(); +// //std::cerr << "\nBefore: active voxel count = " << count << std::endl; +// //grid->print(std::cerr,5); +// openvdb::tools::dilateActiveValues(grid->tree()); +// CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); +// //std::cerr << "\nAfter: active voxel count = " +// // << grid->tree().activeVoxelCount() << std::endl; +// } + + {// test dilateVoxels6 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::dilateActiveValues(tree1, 1, openvdb::tools::NN_FACE); + //openvdb::tools::Morphology m(tree1); + //m.dilateVoxels6(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n= openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=1) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6), tree1.activeVoxelCount()); + } + } + } + } + {// test dilateVoxels18 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::dilateActiveValues(tree1, 1, openvdb::tools::NN_FACE_EDGE); + //openvdb::tools::Morphology m(tree1); + //m.dilateVoxels18(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n= openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=2) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12), tree1.activeVoxelCount()); + } + } + } + } + {// test dilateVoxels26 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + Tree543f tree1(0.0f); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree1.activeVoxelCount()); + tree1.setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.isValueOn(ijk)); + openvdb::tools::dilateActiveValues(tree1, 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + //openvdb::tools::Morphology m(tree1); + //m.dilateVoxels26(); + for (int i=-1; i<=1; ++i) { + for (int j=-1; j<=1; ++j) { + for (int k=-1; k<=1; ++k) { + const openvdb::Coord xyz = ijk.offsetBy(i,j,k), d=ijk-xyz; + const int n = openvdb::math::Abs(d[0]) + + openvdb::math::Abs(d[1]) + + openvdb::math::Abs(d[2]); + if (n<=3) { + CPPUNIT_ASSERT( tree1.isValueOn(xyz)); + } else { + CPPUNIT_ASSERT(!tree1.isValueOn(xyz)); + } + } + } + } + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12 + 8), tree1.activeVoxelCount()); + } + } + } + } + /* + // Performance test + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateActiveValues6"); + openvdb::tools::dilateActiveValues(grid->tree(), 1, openvdb::tools::NN_FACE); + //openvdb::tools::dilateVoxels(grid->tree()); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + // grid->print(std::cerr, 3); + } + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateActiveValues18"); + openvdb::tools::dilateActiveValues(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE); + //openvdb::tools::dilateVoxels(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + //grid->print(std::cerr, 3); + } + {// dialte a narrow band of a sphere + const float radius = 335.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 0.5f, width = 3.25f; + openvdb::FloatGrid::Ptr grid = + openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, width); + //grid->print(std::cerr, 3); + const openvdb::Index64 count = grid->tree().activeVoxelCount(); + openvdb::util::CpuTimer t; + t.start("sphere dilateActiveValues26"); + openvdb::tools::dilateActiveValues(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + //openvdb::tools::dilateVoxels(grid->tree(), 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + t.stop(); + CPPUNIT_ASSERT(grid->tree().activeVoxelCount() > count); + //grid->print(std::cerr, 3); + } + */ + #ifdef TestTools_DATA_PATH + { + openvdb::initialize();//required whenever I/O of OpenVDB files is performed! + const std::string path(TestTools_DATA_PATH); + std::vector filenames; + filenames.push_back("armadillo.vdb"); + filenames.push_back("buddha.vdb"); + filenames.push_back("bunny.vdb"); + filenames.push_back("crawler.vdb"); + filenames.push_back("dragon.vdb"); + filenames.push_back("iss.vdb"); + filenames.push_back("utahteapot.vdb"); + openvdb::util::CpuTimer timer; + for ( size_t i=0; i\"" << filenames[i] << "\" =====================" << std::endl; + std::cerr << "Reading \"" << filenames[i] << "\" ...\n"; + openvdb::io::File file( path + filenames[i] ); + file.open(false);//disable delayed loading + openvdb::FloatGrid::Ptr model = openvdb::gridPtrCast(file.getGrids()->at(0)); + openvdb::MaskTree mask(model->tree(), false, true, openvdb::TopologyCopy() ); + timer.start("Calling dilateActiveValues on grid"); + openvdb::tools::dilateActiveValues(model->tree(), 1, openvdb::tools::NN_FACE); + timer.stop(); + //model->tree().print(std::cout, 3); + timer.start("Calling dilateActiveValues on mask"); + openvdb::tools::dilateActiveValues(mask, 1, openvdb::tools::NN_FACE); + timer.stop(); + //mask.print(std::cout, 3); + CPPUNIT_ASSERT_EQUAL(model->activeVoxelCount(), mask.activeVoxelCount()); + } + } +#endif + +} + +void +TestTools::testErodeVoxels() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Index32; + using openvdb::Index64; + + using TreeType = openvdb::tree::Tree4::Type; + + TreeType::Ptr tree(new TreeType); + openvdb::tools::changeBackground(*tree, /*background=*/5.0); + CPPUNIT_ASSERT(tree->empty()); + + const int leafDim = TreeType::LeafNodeType::DIM; + CPPUNIT_ASSERT_EQUAL(1 << 3, leafDim); + + { + // Set, dilate and erode a single voxel at the center of a leaf node. + tree->clear(); + CPPUNIT_ASSERT_EQUAL(0, int(tree->activeVoxelCount())); + + tree->setValue(Coord(leafDim >> 1), 1.0); + CPPUNIT_ASSERT_EQUAL(1, int(tree->activeVoxelCount())); + + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(7, int(tree->activeVoxelCount())); + + openvdb::tools::erodeVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(1, int(tree->activeVoxelCount())); + + openvdb::tools::erodeVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(0, int(tree->activeVoxelCount())); + } + { + // Create an active, leaf node-sized tile. + tree->clear(); + tree->fill(CoordBBox(Coord(0), Coord(leafDim - 1)), 1.0); + CPPUNIT_ASSERT_EQUAL(0, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(leafDim * leafDim * leafDim, int(tree->activeVoxelCount())); + + tree->setValue(Coord(leafDim, leafDim - 1, leafDim - 1), 1.0); + CPPUNIT_ASSERT_EQUAL(1, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(leafDim * leafDim * leafDim + 1,int(tree->activeVoxelCount())); + + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(3, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(leafDim * leafDim * leafDim + 1 + 5,int(tree->activeVoxelCount())); + + openvdb::tools::erodeVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(1, int(tree->leafCount())); + CPPUNIT_ASSERT_EQUAL(leafDim * leafDim * leafDim + 1, int(tree->activeVoxelCount())); + } + { + // Set and dilate a single voxel at each of the eight corners of a leaf node. + for (int i = 0; i < 8; ++i) { + tree->clear(); + + openvdb::Coord xyz( + i & 1 ? leafDim - 1 : 0, + i & 2 ? leafDim - 1 : 0, + i & 4 ? leafDim - 1 : 0); + tree->setValue(xyz, 1.0); + CPPUNIT_ASSERT_EQUAL(1, int(tree->activeVoxelCount())); + + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(7, int(tree->activeVoxelCount())); + + openvdb::tools::erodeVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(1, int(tree->activeVoxelCount())); + } + } + { + // Set three active voxels and dilate and erode + tree->clear(); + tree->setValue(Coord(0), 1.0); + tree->setValue(Coord( 1, 0, 0), 1.0); + tree->setValue(Coord(-1, 0, 0), 1.0); + CPPUNIT_ASSERT_EQUAL(3, int(tree->activeVoxelCount())); + + openvdb::tools::dilateVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(17, int(tree->activeVoxelCount())); + + openvdb::tools::erodeVoxels(*tree); + CPPUNIT_ASSERT_EQUAL(3, int(tree->activeVoxelCount())); + } + { + struct Info { + void test(TreeType::Ptr aTree) { + CPPUNIT_ASSERT_EQUAL(activeVoxelCount, int(aTree->activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(leafCount, int(aTree->leafCount())); + CPPUNIT_ASSERT_EQUAL(nonLeafCount, int(aTree->nonLeafCount())); + } + int activeVoxelCount, leafCount, nonLeafCount; + }; + Info iterInfo[12] = { + { 0, 0, 1 },//an empty tree only contains a root node + { 1, 1, 3 }, + { 7, 1, 3 }, + { 25, 1, 3 }, + { 63, 1, 3 }, + { 129, 4, 3 }, + { 231, 7, 9 }, + { 377, 7, 9 }, + { 575, 7, 9 }, + { 833, 10, 9 }, + { 1159, 16, 9 }, + { 1561, 19, 15 }, + }; + + // Perform repeated dilations, starting with a single voxel. + tree->clear(); + iterInfo[0].test(tree); + + tree->setValue(Coord(leafDim >> 1), 1.0); + iterInfo[1].test(tree); + + for (int i = 2; i < 12; ++i) { + openvdb::tools::dilateVoxels(*tree); + iterInfo[i].test(tree); + } + for (int i = 10; i >= 0; --i) { + openvdb::tools::erodeVoxels(*tree); + iterInfo[i].test(tree); + } + + // Now try it using the resursive calls + for (int i = 2; i < 12; ++i) { + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + openvdb::tools::dilateVoxels(*tree, i-1); + iterInfo[i].test(tree); + } + for (int i = 10; i >= 0; --i) { + tree->clear(); + tree->setValue(Coord(leafDim >> 1), 1.0); + openvdb::tools::dilateVoxels(*tree, 10); + openvdb::tools::erodeVoxels(*tree, 11-i); + iterInfo[i].test(tree); + } + } + + {// erode a narrow band of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + openvdb::tools::erodeVoxels(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() < count); + } + + {// erode a fog volume of a sphere + using GridType = openvdb::Grid; + GridType grid(tree->background()); + unittest_util::makeSphere(/*dim=*/openvdb::Coord(64, 64, 64), + /*center=*/openvdb::Vec3f(0, 0, 0), + /*radius=*/20, grid, /*dx=*/1.0f, + unittest_util::SPHERE_DENSE_NARROW_BAND); + openvdb::tools::sdfToFogVolume(grid); + const openvdb::Index64 count = grid.tree().activeVoxelCount(); + openvdb::tools::erodeVoxels(grid.tree()); + CPPUNIT_ASSERT(grid.tree().activeVoxelCount() < count); + } + + {//erode6 + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + tree->clear(); + const openvdb::Coord ijk(x,y,z); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree->activeVoxelCount()); + tree->setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + CPPUNIT_ASSERT(tree->isValueOn(ijk)); + openvdb::tools::dilateVoxels(*tree, 1, openvdb::tools::NN_FACE); + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6), tree->activeVoxelCount()); + openvdb::tools::erodeVoxels( *tree, 1, openvdb::tools::NN_FACE); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + CPPUNIT_ASSERT(tree->isValueOn(ijk)); + } + } + } + } + +#if 0 + {//erode18 + /// @todo Not implemented yet + for (int iter=1; iter<4; ++iter) { + for (int x=0; x<8; ++x) { + for (int y=0; y<8; ++y) { + for (int z=0; z<8; ++z) { + const openvdb::Coord ijk(x,y,z); + tree->clear(); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree->activeVoxelCount()); + tree->setValue(ijk, 1.0f); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + CPPUNIT_ASSERT(tree->isValueOn(ijk)); + //openvdb::tools::dilateVoxels(*tree, iter, openvdb::tools::NN_FACE_EDGE); + openvdb::tools::dilateVoxels(*tree, iter, openvdb::tools::NN_FACE); + //std::cerr << "Dilated to: " << tree->activeVoxelCount() << std::endl; + //if (iter==1) { + // CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12), tree->activeVoxelCount()); + //} + openvdb::tools::erodeVoxels( *tree, iter, openvdb::tools::NN_FACE_EDGE); + CPPUNIT_ASSERT_EQUAL(Index64(1), tree->activeVoxelCount()); + CPPUNIT_ASSERT(tree->isValueOn(ijk)); + } + } + } + } + } +#endif +#if 0 + {//erode26 + /// @todo Not implemented yet + tree->clear(); + tree->setValue(openvdb::Coord(3,4,5), 1.0f); + openvdb::tools::dilateVoxels(*tree, 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + CPPUNIT_ASSERT_EQUAL(Index64(1 + 6 + 12 + 8), tree->activeVoxelCount()); + openvdb::tools::erodeVoxels( *tree, 1, openvdb::tools::NN_FACE_EDGE_VERTEX); + //openvdb::tools::dilateVoxels(*tree, 12, openvdb::tools::NN_FACE_EDGE); + //openvdb::tools::erodeVoxels( *tree, 12, openvdb::tools::NN_FACE_EDGE); + CPPUNIT_ASSERT_EQUAL(1, int(tree->activeVoxelCount())); + CPPUNIT_ASSERT(tree->isValueOn(openvdb::Coord(3,4,5))); + } +#endif +} + + +void +TestTools::testActivate() +{ + using namespace openvdb; + + const Vec3s background(0.0, -1.0, 1.0), foreground(42.0); + + Vec3STree tree(background); + + const CoordBBox bbox1(Coord(-200), Coord(-181)), bbox2(Coord(51), Coord(373)); + + // Set some non-background active voxels. + tree.fill(bbox1, Vec3s(0.0), /*active=*/true); + + // Mark some background voxels as active. + tree.fill(bbox2, background, /*active=*/true); + CPPUNIT_ASSERT_EQUAL(bbox2.volume() + bbox1.volume(), tree.activeVoxelCount()); + + // Deactivate all voxels with the background value. + tools::deactivate(tree, background, /*tolerance=*/Vec3s(1.0e-6f)); + // Verify that there are no longer any active voxels with the background value. + CPPUNIT_ASSERT_EQUAL(bbox1.volume(), tree.activeVoxelCount()); + + // Set some voxels to the foreground value but leave them inactive. + tree.fill(bbox2, foreground, /*active=*/false); + // Verify that there are no active voxels with the background value. + CPPUNIT_ASSERT_EQUAL(bbox1.volume(), tree.activeVoxelCount()); + + // Activate all voxels with the foreground value. + tools::activate(tree, foreground); + // Verify that the expected number of voxels are active. + CPPUNIT_ASSERT_EQUAL(bbox1.volume() + bbox2.volume(), tree.activeVoxelCount()); +} + +void +TestTools::testFilter() +{ + openvdb::FloatGrid::Ptr referenceGrid = openvdb::FloatGrid::create(/*background=*/5.0); + + const openvdb::Coord dim(40); + const openvdb::Vec3f center(25.0f, 20.0f, 20.0f); + const float radius = 10.0f; + unittest_util::makeSphere( + dim, center, radius, *referenceGrid, unittest_util::SPHERE_DENSE); + const openvdb::FloatTree& sphere = referenceGrid->tree(); + + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(sphere.activeVoxelCount())); + openvdb::Coord xyz; + + {// test Filter::offsetFilter + openvdb::FloatGrid::Ptr grid = referenceGrid->deepCopy(); + openvdb::FloatTree& tree = grid->tree(); + openvdb::tools::Filter filter(*grid); + const float offset = 2.34f; + filter.setGrainSize(0);//i.e. disable threading + filter.offset(offset); + for (int x=0; x0.0001f) std::cerr << " failed at " << xyz << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0f, delta, /*tolerance=*/0.0001); + } + } + } + filter.setGrainSize(1);//i.e. enable threading + filter.offset(-offset);//default is multi-threaded + for (int x=0; x0.0001f) std::cerr << " failed at " << xyz << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0f, delta, /*tolerance=*/0.0001); + } + } + } + //std::cerr << "Successfully completed TestTools::testFilter offset test" << std::endl; + } + {// test Filter::median + openvdb::FloatGrid::Ptr filteredGrid = referenceGrid->deepCopy(); + openvdb::FloatTree& filteredTree = filteredGrid->tree(); + const int width = 2; + openvdb::math::DenseStencil stencil(*referenceGrid, width); + openvdb::tools::Filter filter(*filteredGrid); + filter.median(width, /*interations=*/1); + std::vector tmp; + for (int x=0; xdeepCopy(); + openvdb::FloatTree& filteredTree = filteredGrid->tree(); + const int width = 2; + openvdb::math::DenseStencil stencil(*referenceGrid, width); + openvdb::tools::Filter filter(*filteredGrid); + filter.mean(width, /*interations=*/1); + for (int x=0; xactiveVoxelCount()); + + // For a level set, tools::interiorMask() should return a mask + // of the interior of the isosurface. + lsgrid.setGridClass(GRID_LEVEL_SET); + mask = tools::interiorMask(lsgrid); + CPPUNIT_ASSERT_EQUAL(intBand.volume(), mask->activeVoxelCount()); +} + + +void +TestTools::testLevelSetSphere() +{ + const float radius = 4.3f; + const openvdb::Vec3f center(15.8f, 13.2f, 16.7f); + const float voxelSize = 1.5f, width = 3.25f; + const int dim = 32; + + openvdb::FloatGrid::Ptr grid1 = + openvdb::tools::createLevelSetSphere(radius, center, voxelSize, width); + + /// Also test ultra slow makeSphere in unittest/util.h + openvdb::FloatGrid::Ptr grid2 = openvdb::createLevelSet(voxelSize, width); + unittest_util::makeSphere( + openvdb::Coord(dim), center, radius, *grid2, unittest_util::SPHERE_SPARSE_NARROW_BAND); + + const float outside = grid1->background(), inside = -outside; + for (int i=0; itree().getValue(openvdb::Coord(i,j,k)); + const float val2 = grid2->tree().getValue(openvdb::Coord(i,j,k)); + if (dist > outside) { + CPPUNIT_ASSERT_DOUBLES_EQUAL( outside, val1, 0.0001); + CPPUNIT_ASSERT_DOUBLES_EQUAL( outside, val2, 0.0001); + } else if (dist < inside) { + CPPUNIT_ASSERT_DOUBLES_EQUAL( inside, val1, 0.0001); + CPPUNIT_ASSERT_DOUBLES_EQUAL( inside, val2, 0.0001); + } else { + CPPUNIT_ASSERT_DOUBLES_EQUAL( dist, val1, 0.0001); + CPPUNIT_ASSERT_DOUBLES_EQUAL( dist, val2, 0.0001); + } + } + } + } + + CPPUNIT_ASSERT_EQUAL(grid1->activeVoxelCount(), grid2->activeVoxelCount()); +}// testLevelSetSphere + +void +TestTools::testLevelSetPlatonic() +{ + using namespace openvdb; + + const float scale = 0.5f; + const Vec3f center(1.0f, 2.0f, 3.0f); + const float voxelSize = 0.025f, width = 2.0f, background = width*voxelSize; + const Coord ijk(int(center[0]/voxelSize), + int(center[1]/voxelSize), + int(center[2]/voxelSize));// inside + + // The tests below are not particularly good (a visual inspection + // in Houdini is much better) but at least it exercises the code + // and performs an elementary suite of tests. + + {// test tetrahedron + FloatGrid::Ptr ls = tools::createLevelSetTetrahedron(scale, center, + voxelSize, width); + CPPUNIT_ASSERT(ls->activeVoxelCount() > 0); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-ls->background(), ls->tree().getValue(ijk), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ls->background(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ls->background(),ls->tree().getValue(Coord(0)), 1e-6); + } + {// test cube + FloatGrid::Ptr ls = tools::createLevelSetCube(scale, center, + voxelSize, width); + CPPUNIT_ASSERT(ls->activeVoxelCount() > 0); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-ls->background(),ls->tree().getValue(ijk), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ls->background(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ls->background(),ls->tree().getValue(Coord(0)), 1e-6); + } + {// test octahedron + FloatGrid::Ptr ls = tools::createLevelSetOctahedron(scale, center, + voxelSize, width); + CPPUNIT_ASSERT(ls->activeVoxelCount() > 0); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-ls->background(),ls->tree().getValue(ijk), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ls->background(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ls->background(),ls->tree().getValue(Coord(0)), 1e-6); + } + {// test icosahedron + FloatGrid::Ptr ls = tools::createLevelSetIcosahedron(scale, center, + voxelSize, width); + CPPUNIT_ASSERT(ls->activeVoxelCount() > 0); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-ls->background(),ls->tree().getValue(ijk), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ls->background(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ls->background(),ls->tree().getValue(Coord(0)), 1e-6); + } + {// test dodecahedron + FloatGrid::Ptr ls = tools::createLevelSetDodecahedron(scale, center, + voxelSize, width); + CPPUNIT_ASSERT(ls->activeVoxelCount() > 0); + CPPUNIT_ASSERT(ls->tree().isValueOff(ijk)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-ls->background(),ls->tree().getValue(ijk), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, ls->background(), 1e-6); + CPPUNIT_ASSERT_DOUBLES_EQUAL(ls->background(),ls->tree().getValue(Coord(0)), 1e-6); + } + +}// testLevelSetPlatonic + +void +TestTools::testLevelSetAdvect() +{ + // Uncomment sections below to run this (time-consuming) test + using namespace openvdb; + + const int dim = 128; + const Vec3f center(0.35f, 0.35f, 0.35f); + const float radius = 0.15f, voxelSize = 1.0f/(dim-1); + const float halfWidth = 3.0f, gamma = halfWidth*voxelSize; + + using GridT = FloatGrid; + //using VectT = Vec3fGrid; + + {//test tracker::resize + GridT::Ptr grid = tools::createLevelSetSphere(radius, center, voxelSize, halfWidth); + using TrackerT = tools::LevelSetTracker; + TrackerT tracker(*grid); + tracker.setSpatialScheme(math::FIRST_BIAS); + tracker.setTemporalScheme(math::TVD_RK1); + + ASSERT_DOUBLES_EXACTLY_EQUAL( gamma, grid->background()); + ASSERT_DOUBLES_EXACTLY_EQUAL( halfWidth, tracker.getHalfWidth()); + + CPPUNIT_ASSERT(!tracker.resize()); + + {// check range of on values in a sphere w/o mask + tools::CheckRange c(-gamma, gamma); + tools::Diagnose d(*grid); + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check norm of gradient of sphere w/o mask + tools::CheckNormGrad c(*grid, 0.9f, 1.1f); + tools::Diagnose d(*grid); + std::string str = d.check(c, false, true, false, false); + //std::cerr << "NormGrad:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + + CPPUNIT_ASSERT(tracker.resize(4)); + + ASSERT_DOUBLES_EXACTLY_EQUAL( 4*voxelSize, grid->background()); + ASSERT_DOUBLES_EXACTLY_EQUAL( 4.0f, tracker.getHalfWidth()); + + {// check range of on values in a sphere w/o mask + const float g = gamma + voxelSize; + tools::CheckRange c(-g, g); + tools::Diagnose d(*grid); + std::string str = d.check(c); + //std::cerr << "Values out of range:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + {// check norm of gradient of sphere w/o mask + tools::CheckNormGrad c(*grid, 0.4f, 1.1f); + tools::Diagnose d(*grid); + std::string str = d.check(c, false, true, false, false); + //std::cerr << "NormGrad:\n" << str; + CPPUNIT_ASSERT(str.empty()); + CPPUNIT_ASSERT_EQUAL(0, int(d.valueCount())); + CPPUNIT_ASSERT_EQUAL(0, int(d.failureCount())); + } + } + /* + {//test tracker + GridT::Ptr grid = openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + using TrackerT = openvdb::tools::LevelSetTracker; + TrackerT tracker(*grid); + tracker.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + tracker.setTemporalScheme(openvdb::math::TVD_RK1); + + FrameWriter fw(dim, grid); fw("Tracker",0, 0); + //for (float t = 0, dt = 0.005f; !grid->empty() && t < 3.0f; t += dt) { + // fw("Enright", t + dt, advect.advect(t, t + dt)); + //} + for (float t = 0, dt = 0.5f; !grid->empty() && t < 1.0f; t += dt) { + tracker.track(); + fw("Tracker", 0, 0); + } + */ + + /* + {//test EnrightField + GridT::Ptr grid = openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + using FieldT = openvdb::tools::EnrightField; + FieldT field; + + using AdvectT = openvdb::tools::LevelSetAdvection; + AdvectT advect(*grid, field); + advect.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + advect.setTemporalScheme(openvdb::math::TVD_RK2); + advect.setTrackerSpatialScheme(openvdb::math::HJWENO5_BIAS); + advect.setTrackerTemporalScheme(openvdb::math::TVD_RK1); + + FrameWriter fw(dim, grid); fw("Enright",0, 0); + //for (float t = 0, dt = 0.005f; !grid->empty() && t < 3.0f; t += dt) { + // fw("Enright", t + dt, advect.advect(t, t + dt)); + //} + for (float t = 0, dt = 0.5f; !grid->empty() && t < 1.0f; t += dt) { + fw("Enright", t + dt, advect.advect(t, t + dt)); + } + } + */ + /* + {// test DiscreteGrid - Aligned + GridT::Ptr grid = openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + VectT vect(openvdb::Vec3f(1,0,0)); + using FieldT = openvdb::tools::DiscreteField; + FieldT field(vect); + using AdvectT = openvdb::tools::LevelSetAdvection; + AdvectT advect(*grid, field); + advect.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + advect.setTemporalScheme(openvdb::math::TVD_RK2); + + FrameWriter fw(dim, grid); fw("Aligned",0, 0); + //for (float t = 0, dt = 0.005f; !grid->empty() && t < 3.0f; t += dt) { + // fw("Aligned", t + dt, advect.advect(t, t + dt)); + //} + for (float t = 0, dt = 0.5f; !grid->empty() && t < 1.0f; t += dt) { + fw("Aligned", t + dt, advect.advect(t, t + dt)); + } + } + */ + /* + {// test DiscreteGrid - Transformed + GridT::Ptr grid = openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + VectT vect(openvdb::Vec3f(0,0,0)); + VectT::Accessor acc = vect.getAccessor(); + for (openvdb::Coord ijk(0); ijk[0]; + FieldT field(vect); + using AdvectT = openvdb::tools::LevelSetAdvection; + AdvectT advect(*grid, field); + advect.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + advect.setTemporalScheme(openvdb::math::TVD_RK2); + + FrameWriter fw(dim, grid); fw("Xformed",0, 0); + //for (float t = 0, dt = 0.005f; !grid->empty() && t < 3.0f; t += dt) { + // fw("Xformed", t + dt, advect.advect(t, t + dt)); + //} + for (float t = 0, dt = 0.5f; !grid->empty() && t < 1.0f; t += dt) { + fw("Xformed", t + dt, advect.advect(t, t + dt)); + } + } + */ +}//testLevelSetAdvect + + +//////////////////////////////////////// + +void +TestTools::testLevelSetMorph() +{ + using GridT = openvdb::FloatGrid; + {//test morphing overlapping but aligned spheres + const int dim = 64; + const openvdb::Vec3f C1(0.35f, 0.35f, 0.35f), C2(0.4f, 0.4f, 0.4f); + const float radius = 0.15f, voxelSize = 1.0f/(dim-1); + + GridT::Ptr source = openvdb::tools::createLevelSetSphere(radius, C1, voxelSize); + GridT::Ptr target = openvdb::tools::createLevelSetSphere(radius, C2, voxelSize); + + using MorphT = openvdb::tools::LevelSetMorphing; + MorphT morph(*source, *target); + morph.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTemporalScheme(openvdb::math::TVD_RK3); + morph.setTrackerSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTrackerTemporalScheme(openvdb::math::TVD_RK2); + + const std::string name("SphereToSphere"); + //FrameWriter fw(dim, source); + //fw(name, 0.0f, 0); + //util::CpuTimer timer; + const float tMax = 0.05f/voxelSize; + //std::cerr << "\nt-max = " << tMax << std::endl; + //timer.start("\nMorphing"); + for (float t = 0, dt = 0.1f; !source->empty() && t < tMax; t += dt) { + morph.advect(t, t + dt); + //fw(name, t + dt, morph.advect(t, t + dt)); + } + // timer.stop(); + + const float invDx = 1.0f/voxelSize; + openvdb::math::Stats s; + for (GridT::ValueOnCIter it = source->tree().cbeginValueOn(); it; ++it) { + s.add( invDx*(*it - target->tree().getValue(it.getCoord())) ); + } + for (GridT::ValueOnCIter it = target->tree().cbeginValueOn(); it; ++it) { + s.add( invDx*(*it - target->tree().getValue(it.getCoord())) ); + } + //s.print("Morph"); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, s.min(), 0.50); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, s.max(), 0.50); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, s.avg(), 0.02); + /* + openvdb::math::Histogram h(s, 30); + for (GridT::ValueOnCIter it = source->tree().cbeginValueOn(); it; ++it) { + h.add( invDx*(*it - target->tree().getValue(it.getCoord())) ); + } + for (GridT::ValueOnCIter it = target->tree().cbeginValueOn(); it; ++it) { + h.add( invDx*(*it - target->tree().getValue(it.getCoord())) ); + } + h.print("Morph"); + */ + } + /* + // Uncomment sections below to run this (very time-consuming) test + {//test morphing between the bunny and the buddha models loaded from files + util::CpuTimer timer; + openvdb::initialize();//required whenever I/O of OpenVDB files is performed! + openvdb::io::File sourceFile("/usr/pic1/Data/OpenVDB/LevelSetModels/bunny.vdb"); + sourceFile.open(); + GridT::Ptr source = openvdb::gridPtrCast(sourceFile.getGrids()->at(0)); + + openvdb::io::File targetFile("/usr/pic1/Data/OpenVDB/LevelSetModels/buddha.vdb"); + targetFile.open(); + GridT::Ptr target = openvdb::gridPtrCast(targetFile.getGrids()->at(0)); + + using MorphT = openvdb::tools::LevelSetMorphing; + MorphT morph(*source, *target); + morph.setSpatialScheme(openvdb::math::FIRST_BIAS); + //morph.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTemporalScheme(openvdb::math::TVD_RK2); + morph.setTrackerSpatialScheme(openvdb::math::FIRST_BIAS); + //morph.setTrackerSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTrackerTemporalScheme(openvdb::math::TVD_RK2); + + const std::string name("Bunny2Buddha"); + FrameWriter fw(1, source); + fw(name, 0.0f, 0); + for (float t = 0, dt = 1.0f; !source->empty() && t < 300.0f; t += dt) { + timer.start("Morphing"); + const int cflCount = morph.advect(t, t + dt); + timer.stop(); + fw(name, t + dt, cflCount); + } + } + */ + /* + // Uncomment sections below to run this (very time-consuming) test + {//test morphing between the dragon and the teapot models loaded from files + util::CpuTimer timer; + openvdb::initialize();//required whenever I/O of OpenVDB files is performed! + openvdb::io::File sourceFile("/usr/pic1/Data/OpenVDB/LevelSetModels/dragon.vdb"); + sourceFile.open(); + GridT::Ptr source = openvdb::gridPtrCast(sourceFile.getGrids()->at(0)); + + openvdb::io::File targetFile("/usr/pic1/Data/OpenVDB/LevelSetModels/utahteapot.vdb"); + targetFile.open(); + GridT::Ptr target = openvdb::gridPtrCast(targetFile.getGrids()->at(0)); + + using MorphT = openvdb::tools::LevelSetMorphing; + MorphT morph(*source, *target); + morph.setSpatialScheme(openvdb::math::FIRST_BIAS); + //morph.setSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTemporalScheme(openvdb::math::TVD_RK2); + //morph.setTrackerSpatialScheme(openvdb::math::HJWENO5_BIAS); + morph.setTrackerSpatialScheme(openvdb::math::FIRST_BIAS); + morph.setTrackerTemporalScheme(openvdb::math::TVD_RK2); + + const std::string name("Dragon2Teapot"); + FrameWriter fw(5, source); + fw(name, 0.0f, 0); + for (float t = 0, dt = 0.4f; !source->empty() && t < 110.0f; t += dt) { + timer.start("Morphing"); + const int cflCount = morph.advect(t, t + dt); + timer.stop(); + fw(name, t + dt, cflCount); + } + } + + */ +}//testLevelSetMorph + +//////////////////////////////////////// + +void +TestTools::testLevelSetMeasure() +{ + const double percentage = 0.1/100.0;//i.e. 0.1% + using GridT = openvdb::FloatGrid; + const int dim = 256; + openvdb::Real area, volume, mean, gauss; + + // First sphere + openvdb::Vec3f C(0.35f, 0.35f, 0.35f); + openvdb::Real r = 0.15, voxelSize = 1.0/(dim-1); + const openvdb::Real Pi = boost::math::constants::pi(); + GridT::Ptr sphere = openvdb::tools::createLevelSetSphere(float(r), C, float(voxelSize)); + + using MeasureT = openvdb::tools::LevelSetMeasure; + MeasureT m(*sphere); + + /// Test area and volume of sphere in world units + area = 4*Pi*r*r; + volume = 4.0/3.0*Pi*r*r*r; + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "\nVolume of sphere = " << volume << " " << v << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(), percentage*volume); + + // Test area, volume and average mean curvature of sphere in world units + mean = 1.0/r; + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "radius in world units = " << r << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << mean << " " << cm << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(), percentage*mean); + + // Test area, volume, average mean curvature and average gaussian curvature of sphere in world units + gauss = 1.0/(r*r); + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "radius in world units = " << r << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << mean << " " << cm << std::endl; + //std::cerr << "Avg gaussian curvature of sphere = " << gauss << " " << cg << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(), percentage*mean); + CPPUNIT_ASSERT_DOUBLES_EQUAL(gauss, m.avgGaussianCurvature(), percentage*gauss); + CPPUNIT_ASSERT_EQUAL(0, m.genus()); + + // Test measures of sphere in voxel units + r /= voxelSize; + area = 4*Pi*r*r; + volume = 4.0/3.0*Pi*r*r*r; + mean = 1.0/r; + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << curv << " " << cm << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(false), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(false), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(false), percentage*mean); + + gauss = 1.0/(r*r); + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "radius in voxel units = " << r << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << mean << " " << cm << std::endl; + //std::cerr << "Avg gaussian curvature of sphere = " << gauss << " " << cg << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(false), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(false), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(false), percentage*mean); + CPPUNIT_ASSERT_DOUBLES_EQUAL(gauss, m.avgGaussianCurvature(false), percentage*gauss); + CPPUNIT_ASSERT_EQUAL(0, m.genus()); + + // Second sphere + C = openvdb::Vec3f(5.4f, 6.4f, 8.4f); + r = 0.57; + sphere = openvdb::tools::createLevelSetSphere(float(r), C, float(voxelSize)); + m.init(*sphere); + + // Test all measures of sphere in world units + area = 4*Pi*r*r; + volume = 4.0/3.0*Pi*r*r*r; + mean = 1.0/r; + gauss = 1.0/(r*r); + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "radius in world units = " << r << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << mean << " " << cm << std::endl; + //std::cerr << "Avg gaussian curvature of sphere = " << gauss << " " << cg << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(), percentage*mean); + CPPUNIT_ASSERT_DOUBLES_EQUAL(gauss, m.avgGaussianCurvature(), percentage*gauss); + CPPUNIT_ASSERT_EQUAL(0, m.genus()); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(area, openvdb::tools::levelSetArea(*sphere), percentage*area); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(volume,openvdb::tools::levelSetVolume(*sphere),percentage*volume); + //CPPUNIT_ASSERT_EQUAL(0, openvdb::tools::levelSetGenus(*sphere)); + + // Test all measures of sphere in voxel units + r /= voxelSize; + area = 4*Pi*r*r; + volume = 4.0/3.0*Pi*r*r*r; + mean = 1.0/r; + gauss = 1.0/(r*r); + //std::cerr << "\nArea of sphere = " << area << " " << a << std::endl; + //std::cerr << "Volume of sphere = " << volume << " " << v << std::endl; + //std::cerr << "radius in voxel units = " << r << std::endl; + //std::cerr << "Avg mean curvature of sphere = " << mean << " " << cm << std::endl; + //std::cerr << "Avg gaussian curvature of sphere = " << gauss << " " << cg << std::endl; + // Test accuracy of computed measures to within 0.1% of the exact measure. + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, m.area(false), percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume, m.volume(false), percentage*volume); + CPPUNIT_ASSERT_DOUBLES_EQUAL(mean, m.avgMeanCurvature(false), percentage*mean); + CPPUNIT_ASSERT_DOUBLES_EQUAL(gauss, m.avgGaussianCurvature(false), percentage*gauss); + CPPUNIT_ASSERT_DOUBLES_EQUAL(area, openvdb::tools::levelSetArea(*sphere,false), + percentage*area); + CPPUNIT_ASSERT_DOUBLES_EQUAL(volume,openvdb::tools::levelSetVolume(*sphere,false), + percentage*volume); + CPPUNIT_ASSERT_EQUAL(0, openvdb::tools::levelSetGenus(*sphere)); + + // Read level set from file + /* + util::CpuTimer timer; + openvdb::initialize();//required whenever I/O of OpenVDB files is performed! + openvdb::io::File sourceFile("/usr/pic1/Data/OpenVDB/LevelSetModels/venusstatue.vdb"); + sourceFile.open(); + GridT::Ptr model = openvdb::gridPtrCast(sourceFile.getGrids()->at(0)); + m.reinit(*model); + + //m.setGrainSize(1); + timer.start("\nParallel measure of area and volume"); + m.measure(a, v, false); + timer.stop(); + std::cerr << "Model: area = " << a << ", volume = " << v << std::endl; + + timer.start("\nParallel measure of area, volume and curvature"); + m.measure(a, v, c, false); + timer.stop(); + std::cerr << "Model: area = " << a << ", volume = " << v + << ", average curvature = " << c << std::endl; + + m.setGrainSize(0); + timer.start("\nSerial measure of area and volume"); + m.measure(a, v, false); + timer.stop(); + std::cerr << "Model: area = " << a << ", volume = " << v << std::endl; + + timer.start("\nSerial measure of area, volume and curvature"); + m.measure(a, v, c, false); + timer.stop(); + std::cerr << "Model: area = " << a << ", volume = " << v + << ", average curvature = " << c << std::endl; + */ + + {// testing total genus of multiple disjoint level set spheres with different radius + const float dx = 0.5f, r = 50.0f; + auto grid = openvdb::createLevelSet(dx); + CPPUNIT_ASSERT_THROW(openvdb::tools::levelSetGenus(*grid), openvdb::RuntimeError); + for (int i=1; i<=3; ++i) { + auto sphere = openvdb::tools::createLevelSetSphere(r+float(i)*5.0f , openvdb::Vec3f(100.0f*float(i)), dx); + openvdb::tools::csgUnion(*grid, *sphere); + const int x = openvdb::tools::levelSetEulerCharacteristic(*grid);// since they are not overlapping re-normalization is not required + //std::cerr << "Euler characteristics of " << i << " sphere(s) = " << x << std::endl; + CPPUNIT_ASSERT_EQUAL(2*i, x); + } + } + {// testing total genus of multiple disjoint level set cubes of different size + const float dx = 0.5f, size = 50.0f; + auto grid = openvdb::createLevelSet(dx); + CPPUNIT_ASSERT_THROW(openvdb::tools::levelSetGenus(*grid), openvdb::RuntimeError); + for (int i=1; i<=2; ++i) { + auto shape = openvdb::tools::createLevelSetCube(size, openvdb::Vec3f(100.0f*float(i)), dx); + openvdb::tools::csgUnion(*grid, *shape); + const int x = openvdb::tools::levelSetEulerCharacteristic(*grid); + //std::cerr << "Euler characteristics of " << i << " cubes(s) = " << x << std::endl; + CPPUNIT_ASSERT_EQUAL(2*i, x); + } + } + {// testing Euler characteristic and total genus of multiple intersecting (connected) level set spheres + const float dx = 0.5f, r = 50.0f; + auto grid = openvdb::createLevelSet(dx); + CPPUNIT_ASSERT_THROW(openvdb::tools::levelSetGenus(*grid), openvdb::RuntimeError); + for (int i=1; i<=4; ++i) { + auto sphere = openvdb::tools::createLevelSetSphere( r , openvdb::Vec3f(30.0f*float(i), 0.0f, 0.0f), dx); + openvdb::tools::csgUnion(*grid, *sphere); + const int genus = openvdb::tools::levelSetGenus(*grid); + const int x = openvdb::tools::levelSetEulerCharacteristic(*grid); + //std::cerr << "Genus of " << i << " sphere(s) = " << genus << std::endl; + CPPUNIT_ASSERT_EQUAL(0, genus); + //std::cerr << "Euler characteristics of " << i << " sphere(s) = " << genus << std::endl; + CPPUNIT_ASSERT_EQUAL(2, x); + } + } + +}//testLevelSetMeasure + +void +TestTools::testMagnitude() +{ + using namespace openvdb; + { + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + VectorGrid::Ptr gradGrid = tools::gradient(*grid); + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(gradGrid->activeVoxelCount())); + + FloatGrid::Ptr mag = tools::magnitude(*gradGrid); + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(mag->activeVoxelCount())); + + FloatGrid::ConstAccessor accessor = mag->getConstAccessor(); + + Coord xyz(35,30,30); + float v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, v, 0.01); + + xyz.reset(35,10,40); + v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, v, 0.01); + } + { + // Test on a grid with (only) tile values. + + Vec3fGrid grid; + Vec3fTree& tree = grid.tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Vec3f v(1.f, 2.f, 2.f); + const float expectedLength = v.length(); + + tree.addTile(/*level=*/1, Coord(-100), v, /*active=*/true); + tree.addTile(/*level=*/1, Coord(100), v, /*active=*/true); + + CPPUNIT_ASSERT(!tree.empty()); + + FloatGrid::Ptr length = tools::magnitude(grid); + + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(length->activeVoxelCount())); + + for (auto it = length->cbeginValueOn(); it; ++it) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedLength, *it, 1.0e-6); + } + } +} + + +void +TestTools::testMaskedMagnitude() +{ + using namespace openvdb; + { + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0); + FloatTree& tree = grid->tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Coord dim(64,64,64); + const Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=0.0f; + unittest_util::makeSphere(dim, center, radius, *grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT(!tree.empty()); + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + + VectorGrid::Ptr gradGrid = tools::gradient(*grid); + CPPUNIT_ASSERT_EQUAL(int(tree.activeVoxelCount()), int(gradGrid->activeVoxelCount())); + + // create a masking grid + const CoordBBox maskbbox(Coord(35, 30, 30), Coord(41, 41, 41)); + BoolGrid::Ptr maskGrid = BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + // compute the magnitude in masked region + FloatGrid::Ptr mag = tools::magnitude(*gradGrid, *maskGrid); + + FloatGrid::ConstAccessor accessor = mag->getConstAccessor(); + + // test in the masked region + Coord xyz(35,30,30); + CPPUNIT_ASSERT(maskbbox.isInside(xyz)); + float v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, v, 0.01); + + // test outside the masked region + xyz.reset(35,10,40); + CPPUNIT_ASSERT(!maskbbox.isInside(xyz)); + v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, v, 0.01); + } + { + // Test on a grid with (only) tile values. + + Vec3fGrid grid; + Vec3fTree& tree = grid.tree(); + CPPUNIT_ASSERT(tree.empty()); + + const Vec3f v(1.f, 2.f, 2.f); + const float expectedLength = v.length(); + + tree.addTile(/*level=*/1, Coord(100), v, /*active=*/true); + const int expectedActiveVoxelCount = int(tree.activeVoxelCount()); + tree.addTile(/*level=*/1, Coord(-100), v, /*active=*/true); + + CPPUNIT_ASSERT(!tree.empty()); + + BoolGrid mask; + mask.fill(CoordBBox(Coord(90), Coord(200)), true, true); + + FloatGrid::Ptr length = tools::magnitude(grid, mask); + + CPPUNIT_ASSERT_EQUAL(expectedActiveVoxelCount, int(length->activeVoxelCount())); + + for (auto it = length->cbeginValueOn(); it; ++it) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedLength, *it, 1.0e-6); + } + } +} + + +void +TestTools::testNormalize() +{ + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(5.0); + openvdb::FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=10.0f; + unittest_util::makeSphere( + dim,center,radius,*grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + openvdb::Coord xyz(10, 20, 30); + + openvdb::VectorGrid::Ptr grad = openvdb::tools::gradient(*grid); + + using Vec3Type = openvdb::VectorGrid::ValueType; + + using ValueIter = openvdb::VectorGrid::ValueOnIter; + + struct Local { + static inline Vec3Type op(const Vec3Type &x) { return x * 2.0f; } + static inline void visit(const ValueIter& it) { it.setValue(op(*it)); } + }; + + openvdb::tools::foreach(grad->beginValueOn(), Local::visit, true); + + openvdb::VectorGrid::ConstAccessor accessor = grad->getConstAccessor(); + + xyz = openvdb::Coord(35,10,40); + Vec3Type v = accessor.getValue(xyz); + //std::cerr << "\nPassed testNormalize(" << xyz << ")=" << v.length() << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0,v.length(),0.001); + openvdb::VectorGrid::Ptr norm = openvdb::tools::normalize(*grad); + + accessor = norm->getConstAccessor(); + v = accessor.getValue(xyz); + //std::cerr << "\nPassed testNormalize(" << xyz << ")=" << v.length() << std::endl; + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, v.length(), 0.0001); +} + + +void +TestTools::testMaskedNormalize() +{ + openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(5.0); + openvdb::FloatTree& tree = grid->tree(); + + const openvdb::Coord dim(64,64,64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius=10.0f; + unittest_util::makeSphere( + dim,center,radius,*grid, unittest_util::SPHERE_DENSE); + + CPPUNIT_ASSERT_EQUAL(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount())); + openvdb::Coord xyz(10, 20, 30); + + openvdb::VectorGrid::Ptr grad = openvdb::tools::gradient(*grid); + + using Vec3Type = openvdb::VectorGrid::ValueType; + + using ValueIter = openvdb::VectorGrid::ValueOnIter; + + struct Local { + static inline Vec3Type op(const Vec3Type &x) { return x * 2.0f; } + static inline void visit(const ValueIter& it) { it.setValue(op(*it)); } + }; + + openvdb::tools::foreach(grad->beginValueOn(), Local::visit, true); + + openvdb::VectorGrid::ConstAccessor accessor = grad->getConstAccessor(); + + xyz = openvdb::Coord(35,10,40); + Vec3Type v = accessor.getValue(xyz); + + // create a masking grid + + const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41)); + openvdb::BoolGrid::Ptr maskGrid = openvdb::BoolGrid::create(false); + maskGrid->fill(maskbbox, true/*value*/, true/*activate*/); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0,v.length(),0.001); + + // compute the normalized valued in the masked region + openvdb::VectorGrid::Ptr norm = openvdb::tools::normalize(*grad, *maskGrid); + + accessor = norm->getConstAccessor(); + { // outside the masked region + CPPUNIT_ASSERT(!maskbbox.isInside(xyz)); + v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, v.length(), 0.0001); + } + { // inside the masked region + xyz.reset(35, 30, 30); + v = accessor.getValue(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, v.length(), 0.0001); + } +} + +//////////////////////////////////////// + + +void +TestTools::testPointAdvect() +{ + { + // Setup: Advect a number of points in a uniform velocity field (1,1,1). + // over a time dt=1 with each of the 4 different advection schemes. + // Points initialized at latice points. + // + // Uses: FloatTree (velocity), collocated sampling, advection + // + // Expected: All advection schemes will have the same result. Each point will + // be advanced to a new latice point. The i-th point will be at (i+1,i+1,i+1) + // + + const size_t numPoints = 2000000; + + // create a uniform velocity field in SINGLE PRECISION + const openvdb::Vec3f velocityBackground(1, 1, 1); + openvdb::Vec3fGrid::Ptr velocityGrid = openvdb::Vec3fGrid::create(velocityBackground); + + // using all the default template arguments + openvdb::tools::PointAdvect<> advectionTool(*velocityGrid); + + // create points + std::vector pointList(numPoints); /// larger than the tbb chunk size + for (size_t i = 0; i < numPoints; i++) { + pointList[i] = openvdb::Vec3f(float(i), float(i), float(i)); + } + + for (unsigned int order = 1; order < 5; ++order) { + // check all four time integrations schemes + // construct an advection tool. By default the number of cpt iterations is zero + advectionTool.setIntegrationOrder(order); + advectionTool.advect(pointList, /*dt=*/1.0, /*iterations=*/1); + + // check locations + for (size_t i = 0; i < numPoints; i++) { + openvdb::Vec3f expected(float(i + 1), float(i + 1), float(i + 1)); + CPPUNIT_ASSERT_EQUAL(expected, pointList[i]); + } + // reset values + for (size_t i = 0; i < numPoints; i++) { + pointList[i] = openvdb::Vec3f(float(i), float(i), float(i)); + } + } + + } + + { + // Setup: Advect a number of points in a uniform velocity field (1,1,1). + // over a time dt=1 with each of the 4 different advection schemes. + // And then project the point location onto the x-y plane + // Points initialized at latice points. + // + // Uses: DoubleTree (velocity), staggered sampling, constraint projection, advection + // + // Expected: All advection schemes will have the same result. Modes 1-4: Each point will + // be advanced to a new latice point and projected to x-y plane. + // The i-th point will be at (i+1,i+1,0). For mode 0 (no advection), i-th point + // will be found at (i, i, 0) + + const size_t numPoints = 4; + + // create a uniform velocity field in DOUBLE PRECISION + const openvdb::Vec3d velocityBackground(1, 1, 1); + openvdb::Vec3dGrid::Ptr velocityGrid = openvdb::Vec3dGrid::create(velocityBackground); + + // create a simple (horizontal) constraint field valid for a + // (-10,10)x(-10,10)x(-10,10) + const openvdb::Vec3d cptBackground(0, 0, 0); + openvdb::Vec3dGrid::Ptr cptGrid = openvdb::Vec3dGrid::create(cptBackground); + openvdb::Vec3dTree& cptTree = cptGrid->tree(); + + // create points + std::vector pointList(numPoints); + for (unsigned int i = 0; i < numPoints; i++) pointList[i] = openvdb::Vec3d(i, i, i); + + // Initialize the constraint field in a [-10,10]x[-10,10]x[-10,10] box + // this test will only work if the points remain in the box + openvdb::Coord ijk(0, 0, 0); + for (int i = -10; i < 11; i++) { + ijk.setX(i); + for (int j = -10; j < 11; j++) { + ijk.setY(j); + for (int k = -10; k < 11; k++) { + ijk.setZ(k); + // set the value as projection onto the x-y plane + cptTree.setValue(ijk, openvdb::Vec3d(i, j, 0)); + } + } + } + + // construct an advection tool. By default the number of cpt iterations is zero + openvdb::tools::ConstrainedPointAdvect, true> constrainedAdvectionTool(*velocityGrid, *cptGrid, 0); + constrainedAdvectionTool.setThreaded(false); + + // change the number of constraint interation from default 0 to 5 + constrainedAdvectionTool.setConstraintIterations(5); + + // test the pure-projection mode (order = 0) + constrainedAdvectionTool.setIntegrationOrder(0); + + // change the number of constraint interation (from 0 to 5) + constrainedAdvectionTool.setConstraintIterations(5); + + constrainedAdvectionTool.advect(pointList, /*dt=*/1.0, /*iterations=*/1); + + // check locations + for (unsigned int i = 0; i < numPoints; i++) { + openvdb::Vec3d expected(i, i, 0); // location (i, i, i) projected on to x-y plane + for (int n=0; n<3; ++n) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected[n], pointList[i][n], /*tolerance=*/1e-6); + } + } + + // reset values + for (unsigned int i = 0; i < numPoints; i++) pointList[i] = openvdb::Vec3d(i, i, i); + + // test all four time integrations schemes + for (unsigned int order = 1; order < 5; ++order) { + + constrainedAdvectionTool.setIntegrationOrder(order); + + constrainedAdvectionTool.advect(pointList, /*dt=*/1.0, /*iterations=*/1); + + // check locations + for (unsigned int i = 0; i < numPoints; i++) { + openvdb::Vec3d expected(i+1, i+1, 0); // location (i,i,i) projected onto x-y plane + for (int n=0; n<3; ++n) { + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected[n], pointList[i][n], /*tolerance=*/1e-6); + } + } + // reset values + for (unsigned int i = 0; i < numPoints; i++) pointList[i] = openvdb::Vec3d(i, i, i); + } + } +} + + +//////////////////////////////////////// + + +namespace { + + struct PointList + { + struct Point { double x,y,z; }; + std::vector list; + openvdb::Index64 size() const { return openvdb::Index64(list.size()); } + void add(const openvdb::Vec3d &p) { Point q={p[0],p[1],p[2]}; list.push_back(q); } + }; +} + + +void +TestTools::testPointScatter() +{ + using GridType = openvdb::FloatGrid; + const openvdb::Coord dim(64, 64, 64); + const openvdb::Vec3f center(35.0f, 30.0f, 40.0f); + const float radius = 20.0; + using RandGen = std::mersenne_twister_engine; // mt11213b + RandGen mtRand; + + GridType::Ptr grid = GridType::create(/*background=*/2.0); + unittest_util::makeSphere( + dim, center, radius, *grid, unittest_util::SPHERE_DENSE_NARROW_BAND); + + {// test fixed point count scattering + const openvdb::Index64 pointCount = 1000; + PointList points; + openvdb::tools::UniformPointScatter scatter(points, pointCount, mtRand); + scatter.operator()(*grid); + CPPUNIT_ASSERT_EQUAL( pointCount, scatter.getPointCount() ); + CPPUNIT_ASSERT_EQUAL( pointCount, points.size() ); + } + {// test uniform density scattering + const float density = 1.0f;//per volume = per voxel since voxel size = 1 + PointList points; + openvdb::tools::UniformPointScatter scatter(points, density, mtRand); + scatter.operator()(*grid); + CPPUNIT_ASSERT_EQUAL( scatter.getVoxelCount(), scatter.getPointCount() ); + CPPUNIT_ASSERT_EQUAL( scatter.getVoxelCount(), points.size() ); + } + {// test non-uniform density scattering + const float density = 1.0f;//per volume = per voxel since voxel size = 1 + PointList points; + openvdb::tools::NonUniformPointScatter scatter(points, density, mtRand); + scatter.operator()(*grid); + CPPUNIT_ASSERT( scatter.getVoxelCount() < scatter.getPointCount() ); + CPPUNIT_ASSERT_EQUAL( scatter.getPointCount(), points.size() ); + } + {// test dense uniform scattering + const size_t pointsPerVoxel = 8; + PointList points; + openvdb::tools::DenseUniformPointScatter + scatter(points, pointsPerVoxel, mtRand); + scatter.operator()(*grid); + CPPUNIT_ASSERT_EQUAL( scatter.getVoxelCount()*pointsPerVoxel, scatter.getPointCount() ); + CPPUNIT_ASSERT_EQUAL( scatter.getPointCount(), points.size() ); + } +} + +//////////////////////////////////////// + +void +TestTools::testVolumeAdvect() +{ + using namespace openvdb; + + Vec3fGrid velocity(Vec3f(1.0f, 0.0f, 0.0f)); + using GridT = FloatGrid; + using AdvT = tools::VolumeAdvection; + using SamplerT = tools::Sampler<1>; + + {//test non-uniform grids (throws) + GridT::Ptr density0 = GridT::create(0.0f); + density0->transform().preScale(Vec3d(1.0, 2.0, 3.0));//i.e. non-uniform voxels + AdvT a(velocity); + CPPUNIT_ASSERT_THROW((a.advect(*density0, 0.1f)), RuntimeError); + } + + {// test spatialOrder and temporalOrder + AdvT a(velocity); + + // Default should be SEMI + CPPUNIT_ASSERT_EQUAL(1, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(1, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::SEMI); + CPPUNIT_ASSERT_EQUAL(1, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(1, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::MID); + CPPUNIT_ASSERT_EQUAL(1, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(2, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::RK3); + CPPUNIT_ASSERT_EQUAL(1, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(3, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::RK4); + CPPUNIT_ASSERT_EQUAL(1, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(4, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::MAC); + CPPUNIT_ASSERT_EQUAL(2, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(2, a.temporalOrder()); + CPPUNIT_ASSERT( a.isLimiterOn()); + + a.setIntegrator(tools::Scheme::BFECC); + CPPUNIT_ASSERT_EQUAL(2, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(2, a.temporalOrder()); + CPPUNIT_ASSERT( a.isLimiterOn()); + + a.setLimiter(tools::Scheme::NO_LIMITER); + CPPUNIT_ASSERT_EQUAL(2, a.spatialOrder()); + CPPUNIT_ASSERT_EQUAL(2, a.temporalOrder()); + CPPUNIT_ASSERT(!a.isLimiterOn()); + } + + {//test RK4 advect without a mask + GridT::Ptr density0 = GridT::create(0.0f), density1; + density0->fill(CoordBBox(Coord(0),Coord(6)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord( 3,3,3)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(24,3,3)), 0.0f); + CPPUNIT_ASSERT( density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT(!density0->tree().isValueOn(Coord(24,3,3))); + + AdvT a(velocity); + a.setIntegrator(tools::Scheme::RK4); + for (int i=1; i<=240; ++i) { + density1 = a.advect(*density0, 0.1f); + //std::ostringstream ostr; + //ostr << "densityAdvect" << "_" << i << ".vdb"; + //std::cerr << "Writing " << ostr.str() << std::endl; + //openvdb::io::File file(ostr.str()); + //openvdb::GridPtrVec grids; + //grids.push_back(density1); + //file.write(grids); + density0 = density1; + } + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(3,3,3)), 0.0f); + CPPUNIT_ASSERT(density0->tree().getValue(Coord(24,3,3)) > 0.0f); + CPPUNIT_ASSERT(!density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT( density0->tree().isValueOn(Coord(24,3,3))); + } + {//test MAC advect without a mask + GridT::Ptr density0 = GridT::create(0.0f), density1; + density0->fill(CoordBBox(Coord(0),Coord(6)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord( 3,3,3)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(24,3,3)), 0.0f); + CPPUNIT_ASSERT( density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT(!density0->tree().isValueOn(Coord(24,3,3))); + + AdvT a(velocity); + a.setIntegrator(tools::Scheme::BFECC); + for (int i=1; i<=240; ++i) { + density1 = a.advect(*density0, 0.1f); + //std::ostringstream ostr; + //ostr << "densityAdvect" << "_" << i << ".vdb"; + //std::cerr << "Writing " << ostr.str() << std::endl; + //openvdb::io::File file(ostr.str()); + //openvdb::GridPtrVec grids; + //grids.push_back(density1); + //file.write(grids); + density0 = density1; + } + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(3,3,3)), 0.0f); + CPPUNIT_ASSERT(density0->tree().getValue(Coord(24,3,3)) > 0.0f); + CPPUNIT_ASSERT(!density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT( density0->tree().isValueOn(Coord(24,3,3))); + } + {//test advect with a mask + GridT::Ptr density0 = GridT::create(0.0f), density1; + density0->fill(CoordBBox(Coord(0),Coord(6)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord( 3,3,3)), 1.0f); + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(24,3,3)), 0.0f); + CPPUNIT_ASSERT( density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT(!density0->tree().isValueOn(Coord(24,3,3))); + + BoolGrid::Ptr mask = BoolGrid::create(false); + mask->fill(CoordBBox(Coord(4,0,0),Coord(30,8,8)), true); + + AdvT a(velocity); + a.setGrainSize(0); + a.setIntegrator(tools::Scheme::MAC); + //a.setIntegrator(tools::Scheme::BFECC); + //a.setIntegrator(tools::Scheme::RK4); + for (int i=1; i<=240; ++i) { + density1 = a.advect(*density0, *mask, 0.1f); + //std::ostringstream ostr; + //ostr << "densityAdvectMask" << "_" << i << ".vdb"; + //std::cerr << "Writing " << ostr.str() << std::endl; + //openvdb::io::File file(ostr.str()); + //openvdb::GridPtrVec grids; + //grids.push_back(density1); + //file.write(grids); + density0 = density1; + } + CPPUNIT_ASSERT_EQUAL(density0->tree().getValue(Coord(3,3,3)), 1.0f); + CPPUNIT_ASSERT(density0->tree().getValue(Coord(24,3,3)) > 0.0f); + CPPUNIT_ASSERT(density0->tree().isValueOn(Coord( 3,3,3))); + CPPUNIT_ASSERT(density0->tree().isValueOn(Coord(24,3,3))); + } + + /* + {//benchmark on a sphere + util::CpuTimer timer; + GridT::Ptr density0 = GridT::create(0.0f), density1; + density0->fill(CoordBBox(Coord(0), Coord(600)), 1.0f); + timer.start("densify"); + density0->tree().voxelizeActiveTiles(); + timer.stop(); + AdvT a(velocity); + a.setGrainSize(1); + //a.setLimiter(tools::Scheme::NO_LIMITER); + //a.setIntegrator(tools::Scheme::MAC); + //a.setIntegrator(tools::Scheme::BFECC); + a.setIntegrator(tools::Scheme::RK4); + + for (int i=1; i<=10; ++i) { + timer.start("Volume Advection"); + density1 = a.advect(*density0, 0.1f); + timer.stop(); + std::ostringstream ostr; + ostr << "densityAdvectMask" << "_" << i << ".vdb"; + std::cerr << "Writing " << ostr.str() << std::endl; + io::File file(ostr.str()); + GridPtrVec grids; + grids.push_back(density1); + file.write(grids); + density0.swap(density1); + } + } + */ +}// testVolumeAdvect + +//////////////////////////////////////// + + +void +TestTools::testFloatApply() +{ + using ValueIter = openvdb::FloatTree::ValueOnIter; + + struct Local { + static inline float op(float x) { return x * 2.f; } + static inline void visit(const ValueIter& it) { it.setValue(op(*it)); } + }; + + const float background = 1.0; + openvdb::FloatTree tree(background); + + const int MIN = -1000, MAX = 1000, STEP = 50; + openvdb::Coord xyz; + for (int z = MIN; z < MAX; z += STEP) { + xyz.setZ(z); + for (int y = MIN; y < MAX; y += STEP) { + xyz.setY(y); + for (int x = MIN; x < MAX; x += STEP) { + xyz.setX(x); + tree.setValue(xyz, float(x + y + z)); + } + } + } + /// @todo set some tile values + + openvdb::tools::foreach(tree.begin(), Local::visit, /*threaded=*/true); + + float expected = Local::op(background); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, tree.background(), /*tolerance=*/0.0); + //expected = Local::op(-background); + //CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, -tree.background(), /*tolerance=*/0.0); + + for (openvdb::FloatTree::ValueOnCIter it = tree.cbeginValueOn(); it; ++it) { + xyz = it.getCoord(); + expected = Local::op(float(xyz[0] + xyz[1] + xyz[2])); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, it.getValue(), /*tolerance=*/0.0); + } +} + + +//////////////////////////////////////// + + +namespace { + +template +struct MatMul { + openvdb::math::Mat3s mat; + MatMul(const openvdb::math::Mat3s& _mat): mat(_mat) {} + openvdb::Vec3s xform(const openvdb::Vec3s& v) const { return mat.transform(v); } + void operator()(const IterT& it) const { it.setValue(xform(*it)); } +}; + +} + + +void +TestTools::testVectorApply() +{ + using ValueIter = openvdb::VectorTree::ValueOnIter; + + const openvdb::Vec3s background(1, 1, 1); + openvdb::VectorTree tree(background); + + const int MIN = -1000, MAX = 1000, STEP = 80; + openvdb::Coord xyz; + for (int z = MIN; z < MAX; z += STEP) { + xyz.setZ(z); + for (int y = MIN; y < MAX; y += STEP) { + xyz.setY(y); + for (int x = MIN; x < MAX; x += STEP) { + xyz.setX(x); + tree.setValue(xyz, openvdb::Vec3s(float(x), float(y), float(z))); + } + } + } + /// @todo set some tile values + + MatMul op(openvdb::math::Mat3s(1, 2, 3, -1, -2, -3, 3, 2, 1)); + openvdb::tools::foreach(tree.beginValueOn(), op, /*threaded=*/true); + + openvdb::Vec3s expected; + for (openvdb::VectorTree::ValueOnCIter it = tree.cbeginValueOn(); it; ++it) { + xyz = it.getCoord(); + expected = op.xform(openvdb::Vec3s(float(xyz[0]), float(xyz[1]), float(xyz[2]))); + CPPUNIT_ASSERT_EQUAL(expected, it.getValue()); + } +} + + +//////////////////////////////////////// + + +namespace { + +struct AccumSum { + int64_t sum; int joins; + AccumSum(): sum(0), joins(0) {} + void operator()(const openvdb::Int32Tree::ValueOnCIter& it) + { + if (it.isVoxelValue()) sum += *it; + else sum += (*it) * it.getVoxelCount(); + } + void join(AccumSum& other) { sum += other.sum; joins += 1 + other.joins; } +}; + + +struct AccumLeafVoxelCount { + using LeafRange = openvdb::tree::LeafManager::LeafRange; + openvdb::Index64 count; + AccumLeafVoxelCount(): count(0) {} + void operator()(const LeafRange::Iterator& it) { count += it->onVoxelCount(); } + void join(AccumLeafVoxelCount& other) { count += other.count; } +}; + +} + + +void +TestTools::testAccumulate() +{ + using namespace openvdb; + + const int value = 2; + Int32Tree tree(/*background=*/0); + tree.fill(CoordBBox::createCube(Coord(0), 198), value, /*active=*/true); + + const int64_t expected = tree.activeVoxelCount() * value; + { + AccumSum op; + tools::accumulate(tree.cbeginValueOn(), op, /*threaded=*/false); + CPPUNIT_ASSERT_EQUAL(expected, op.sum); + CPPUNIT_ASSERT_EQUAL(0, op.joins); + } + { + AccumSum op; + tools::accumulate(tree.cbeginValueOn(), op, /*threaded=*/true); + CPPUNIT_ASSERT_EQUAL(expected, op.sum); + } + { + AccumLeafVoxelCount op; + tree::LeafManager mgr(tree); + tools::accumulate(mgr.leafRange().begin(), op, /*threaded=*/true); + CPPUNIT_ASSERT_EQUAL(tree.activeLeafVoxelCount(), op.count); + } +} + + +//////////////////////////////////////// + + +namespace { + +template +struct FloatToVec +{ + using ValueT = typename InIterT::ValueT; + using Accessor = typename openvdb::tree::ValueAccessor; + + // Transform a scalar value into a vector value. + static openvdb::Vec3s toVec(const ValueT& v) { return openvdb::Vec3s(v, v*2, v*3); } + + FloatToVec() { numTiles = 0; } + + void operator()(const InIterT& it, Accessor& acc) + { + if (it.isVoxelValue()) { // set a single voxel + acc.setValue(it.getCoord(), toVec(*it)); + } else { // fill an entire tile + numTiles.fetch_and_increment(); + openvdb::CoordBBox bbox; + it.getBoundingBox(bbox); + acc.tree().fill(bbox, toVec(*it)); + } + } + + tbb::atomic numTiles; +}; + +} + + +void +TestTools::testTransformValues() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Vec3s; + + using Tree323f = openvdb::tree::Tree4::Type; + using Tree323v = openvdb::tree::Tree4::Type; + + const float background = 1.0; + Tree323f ftree(background); + + const int MIN = -1000, MAX = 1000, STEP = 80; + Coord xyz; + for (int z = MIN; z < MAX; z += STEP) { + xyz.setZ(z); + for (int y = MIN; y < MAX; y += STEP) { + xyz.setY(y); + for (int x = MIN; x < MAX; x += STEP) { + xyz.setX(x); + ftree.setValue(xyz, float(x + y + z)); + } + } + } + // Set some tile values. + ftree.fill(CoordBBox(Coord(1024), Coord(1024 + 8 - 1)), 3 * 1024); // level-1 tile + ftree.fill(CoordBBox(Coord(2048), Coord(2048 + 32 - 1)), 3 * 2048); // level-2 tile + ftree.fill(CoordBBox(Coord(3072), Coord(3072 + 256 - 1)), 3 * 3072); // level-3 tile + + for (int shareOp = 0; shareOp <= 1; ++shareOp) { + FloatToVec op; + Tree323v vtree; + openvdb::tools::transformValues(ftree.cbeginValueOn(), vtree, op, + /*threaded=*/true, shareOp); + + // The tile count is accurate only if the functor is shared. Otherwise, + // it is initialized to zero in the main thread and never changed. + CPPUNIT_ASSERT_EQUAL(shareOp ? 3 : 0, int(op.numTiles)); + + Vec3s expected; + for (Tree323v::ValueOnCIter it = vtree.cbeginValueOn(); it; ++it) { + xyz = it.getCoord(); + expected = op.toVec(float(xyz[0] + xyz[1] + xyz[2])); + CPPUNIT_ASSERT_EQUAL(expected, it.getValue()); + } + // Check values inside the tiles. + CPPUNIT_ASSERT_EQUAL(op.toVec(3 * 1024), vtree.getValue(Coord(1024 + 4))); + CPPUNIT_ASSERT_EQUAL(op.toVec(3 * 2048), vtree.getValue(Coord(2048 + 16))); + CPPUNIT_ASSERT_EQUAL(op.toVec(3 * 3072), vtree.getValue(Coord(3072 + 128))); + } +} + + +//////////////////////////////////////// + + +void +TestTools::testUtil() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Vec3s; + + using CharTree = openvdb::tree::Tree4::Type; + + // Test boolean operators + CharTree treeA(false), treeB(false); + + treeA.fill(CoordBBox(Coord(-10), Coord(10)), true); + treeA.voxelizeActiveTiles(); + + treeB.fill(CoordBBox(Coord(-10), Coord(10)), true); + treeB.voxelizeActiveTiles(); + + const size_t voxelCountA = treeA.activeVoxelCount(); + const size_t voxelCountB = treeB.activeVoxelCount(); + + CPPUNIT_ASSERT_EQUAL(voxelCountA, voxelCountB); + + CharTree::Ptr tree = openvdb::util::leafTopologyDifference(treeA, treeB); + CPPUNIT_ASSERT(tree->activeVoxelCount() == 0); + + tree = openvdb::util::leafTopologyIntersection(treeA, treeB); + CPPUNIT_ASSERT(tree->activeVoxelCount() == voxelCountA); + + treeA.fill(CoordBBox(Coord(-10), Coord(22)), true); + treeA.voxelizeActiveTiles(); + + const size_t voxelCount = treeA.activeVoxelCount(); + + tree = openvdb::util::leafTopologyDifference(treeA, treeB); + CPPUNIT_ASSERT(tree->activeVoxelCount() == (voxelCount - voxelCountA)); + + tree = openvdb::util::leafTopologyIntersection(treeA, treeB); + CPPUNIT_ASSERT(tree->activeVoxelCount() == voxelCountA); +} + + +//////////////////////////////////////// + + +void +TestTools::testVectorTransformer() +{ + using namespace openvdb; + + Mat4d xform = Mat4d::identity(); + xform.preTranslate(Vec3d(0.1, -2.5, 3)); + xform.preScale(Vec3d(0.5, 1.1, 2)); + xform.preRotate(math::X_AXIS, 30.0 * M_PI / 180.0); + xform.preRotate(math::Y_AXIS, 300.0 * M_PI / 180.0); + + Mat4d invXform = xform.inverse(); + invXform = invXform.transpose(); + + { + // Set some vector values in a grid, then verify that tools::transformVectors() + // transforms them as expected for each VecType. + + const Vec3s refVec0(0, 0, 0), refVec1(1, 0, 0), refVec2(0, 1, 0), refVec3(0, 0, 1); + + Vec3SGrid grid; + Vec3SGrid::Accessor acc = grid.getAccessor(); + +#define resetGrid() \ + { \ + grid.clear(); \ + acc.setValue(Coord(0), refVec0); \ + acc.setValue(Coord(1), refVec1); \ + acc.setValue(Coord(2), refVec2); \ + acc.setValue(Coord(3), refVec3); \ + } + + // Verify that grid values are in world space by default. + CPPUNIT_ASSERT(grid.isInWorldSpace()); + + resetGrid(); + grid.setVectorType(VEC_INVARIANT); + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT(acc.getValue(Coord(0)).eq(refVec0)); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(refVec1)); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(refVec2)); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(refVec3)); + + resetGrid(); + grid.setVectorType(VEC_COVARIANT); + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT(acc.getValue(Coord(0)).eq(invXform.transform3x3(refVec0))); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(invXform.transform3x3(refVec1))); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(invXform.transform3x3(refVec2))); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(invXform.transform3x3(refVec3))); + + resetGrid(); + grid.setVectorType(VEC_COVARIANT_NORMALIZE); + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT_EQUAL(refVec0, acc.getValue(Coord(0))); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(invXform.transform3x3(refVec1).unit())); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(invXform.transform3x3(refVec2).unit())); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(invXform.transform3x3(refVec3).unit())); + + resetGrid(); + grid.setVectorType(VEC_CONTRAVARIANT_RELATIVE); + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT(acc.getValue(Coord(0)).eq(xform.transform3x3(refVec0))); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(xform.transform3x3(refVec1))); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(xform.transform3x3(refVec2))); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(xform.transform3x3(refVec3))); + + resetGrid(); + grid.setVectorType(VEC_CONTRAVARIANT_ABSOLUTE); + /// @todo This doesn't really test the behavior w.r.t. homogeneous coords. + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT(acc.getValue(Coord(0)).eq(xform.transformH(refVec0))); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(xform.transformH(refVec1))); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(xform.transformH(refVec2))); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(xform.transformH(refVec3))); + + // Verify that transformVectors() has no effect on local-space grids. + resetGrid(); + grid.setVectorType(VEC_CONTRAVARIANT_RELATIVE); + grid.setIsInWorldSpace(false); + tools::transformVectors(grid, xform); + CPPUNIT_ASSERT(acc.getValue(Coord(0)).eq(refVec0)); + CPPUNIT_ASSERT(acc.getValue(Coord(1)).eq(refVec1)); + CPPUNIT_ASSERT(acc.getValue(Coord(2)).eq(refVec2)); + CPPUNIT_ASSERT(acc.getValue(Coord(3)).eq(refVec3)); + +#undef resetGrid + } + { + // Verify that transformVectors() operates only on vector-valued grids. + FloatGrid scalarGrid; + CPPUNIT_ASSERT_THROW(tools::transformVectors(scalarGrid, xform), TypeError); + } +} + + +//////////////////////////////////////// + + +void +TestTools::testPrune() +{ + /// @todo Add more unit-tests! + + using namespace openvdb; + + {// try prunning a tree with const values + const float value = 5.345f; + + FloatTree tree(value); + CPPUNIT_ASSERT_EQUAL(Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(Index32(1), tree.nonLeafCount()); // root node + CPPUNIT_ASSERT(tree.empty()); + + tree.fill(CoordBBox(Coord(-10), Coord(10)), value, /*active=*/false); + CPPUNIT_ASSERT(!tree.empty()); + + tools::prune(tree); + + CPPUNIT_ASSERT_EQUAL(Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(Index32(1), tree.nonLeafCount()); // root node + CPPUNIT_ASSERT(tree.empty()); + } + + {// Prune a tree with a single leaf node with random values in the range [0,1] + using LeafNodeT = tree::LeafNode; + const float val = 1.0, tol = 1.1f; + + // Fill a leaf node with random values in the range [0,1] + LeafNodeT *leaf = new LeafNodeT(Coord(0), val, true); + math::Random01 r(145); + std::vector data(LeafNodeT::NUM_VALUES); + for (Index i=0; isetValueOnly(i, v); + } + + // Insert leaf node into an empty tree + FloatTree tree(val); + tree.addLeaf(leaf); + + CPPUNIT_ASSERT_EQUAL(Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(Index32(3), tree.nonLeafCount()); // root+2*internal + + tools::prune(tree);// tolerance is zero + + CPPUNIT_ASSERT_EQUAL(Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(Index32(3), tree.nonLeafCount()); // root+2*internal + + tools::prune(tree, tol); + + CPPUNIT_ASSERT_EQUAL(Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(Index32(3), tree.nonLeafCount()); // root+2*internal + + std::sort(data.begin(), data.end()); + const float median = data[(LeafNodeT::NUM_VALUES-1)>>1]; + + ASSERT_DOUBLES_EXACTLY_EQUAL(median, tree.getValue(Coord(0))); + } + + /* + {// Benchmark serial prune + util::CpuTimer timer; + initialize();//required whenever I/O of OpenVDB files is performed! + io::File sourceFile("/usr/pic1/Data/OpenVDB/LevelSetModels/crawler.vdb"); + sourceFile.open(false);//disable delayed loading + FloatGrid::Ptr grid = gridPtrCast(sourceFile.getGrids()->at(0)); + const Index32 leafCount = grid->tree().leafCount(); + + timer.start("\nSerial tolerance prune"); + grid->tree().prune(); + timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, grid->tree().leafCount()); + } + {// Benchmark parallel prune + util::CpuTimer timer; + initialize();//required whenever I/O of OpenVDB files is performed! + io::File sourceFile("/usr/pic1/Data/OpenVDB/LevelSetModels/crawler.vdb"); + sourceFile.open(false);//disable delayed loading + FloatGrid::Ptr grid = gridPtrCast(sourceFile.getGrids()->at(0)); + const Index32 leafCount = grid->tree().leafCount(); + + timer.start("\nParallel tolerance prune"); + tools::prune(grid->tree()); + timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, grid->tree().leafCount()); + } + */ +} diff --git a/openvdb/unittest/TestTopologyToLevelSet.cc b/openvdb/unittest/TestTopologyToLevelSet.cc new file mode 100644 index 00000000..839c29b1 --- /dev/null +++ b/openvdb/unittest/TestTopologyToLevelSet.cc @@ -0,0 +1,54 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include + + +class TopologyToLevelSet: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TopologyToLevelSet); + CPPUNIT_TEST(testConversion); + CPPUNIT_TEST_SUITE_END(); + + void testConversion(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TopologyToLevelSet); + +void +TopologyToLevelSet::testConversion() +{ + typedef openvdb::tree::Tree4::Type Tree543b; + typedef openvdb::Grid BoolGrid; + + typedef openvdb::tree::Tree4::Type Tree543f; + typedef openvdb::Grid FloatGrid; + + ///// + + const float voxelSize = 0.1f; + const openvdb::math::Transform::Ptr transform = + openvdb::math::Transform::createLinearTransform(voxelSize); + + BoolGrid maskGrid(false); + maskGrid.setTransform(transform); + + // Define active region + maskGrid.fill(openvdb::CoordBBox(openvdb::Coord(0), openvdb::Coord(7)), true); + maskGrid.tree().voxelizeActiveTiles(); + + FloatGrid::Ptr sdfGrid = openvdb::tools::topologyToLevelSet(maskGrid); + + CPPUNIT_ASSERT(sdfGrid.get() != NULL); + CPPUNIT_ASSERT(!sdfGrid->empty()); + CPPUNIT_ASSERT_EQUAL(int(openvdb::GRID_LEVEL_SET), int(sdfGrid->getGridClass())); + + // test inside coord value + CPPUNIT_ASSERT(sdfGrid->tree().getValue(openvdb::Coord(3,3,3)) < 0.0f); + + // test outside coord value + CPPUNIT_ASSERT(sdfGrid->tree().getValue(openvdb::Coord(10,10,10)) > 0.0f); +} + diff --git a/openvdb/unittest/TestTransform.cc b/openvdb/unittest/TestTransform.cc new file mode 100644 index 00000000..ecef2d77 --- /dev/null +++ b/openvdb/unittest/TestTransform.cc @@ -0,0 +1,535 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include + + +class TestTransform: public CppUnit::TestCase +{ +public: + virtual void setUp(); + virtual void tearDown(); + + CPPUNIT_TEST_SUITE(TestTransform); + CPPUNIT_TEST(testLinearTransform); + CPPUNIT_TEST(testTransformEquality); + CPPUNIT_TEST(testBackwardCompatibility); + CPPUNIT_TEST(testIsIdentity); + CPPUNIT_TEST(testBoundingBoxes); + CPPUNIT_TEST_SUITE_END(); + + void testLinearTransform(); + void testTransformEquality(); + void testBackwardCompatibility(); + void testIsIdentity(); + void testBoundingBoxes(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTransform); + + +//////////////////////////////////////// + + +void +TestTransform::setUp() +{ + openvdb::math::MapRegistry::clear(); + openvdb::math::AffineMap::registerMap(); + openvdb::math::ScaleMap::registerMap(); + openvdb::math::UniformScaleMap::registerMap(); + openvdb::math::TranslationMap::registerMap(); + openvdb::math::ScaleTranslateMap::registerMap(); + openvdb::math::UniformScaleTranslateMap::registerMap(); +} + + +void +TestTransform::tearDown() +{ + openvdb::math::MapRegistry::clear(); +} + + +////openvdb:://////////////////////////////////// + + +void +TestTransform::testLinearTransform() +{ + using namespace openvdb; + double TOL = 1e-7; + + // Test: Scaling + math::Transform::Ptr t = math::Transform::createLinearTransform(0.5); + + Vec3R voxelSize = t->voxelSize(); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[2], TOL); + + CPPUNIT_ASSERT(t->hasUniformScale()); + + // world to index space + Vec3R xyz(-1.0, 2.0, 4.0); + xyz = t->worldToIndex(xyz); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-2.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 4.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 8.0, xyz[2], TOL); + + xyz = Vec3R(-0.7, 2.4, 4.7); + + // cell centered conversion + Coord ijk = t->worldToIndexCellCentered(xyz); + CPPUNIT_ASSERT_EQUAL(Coord(-1, 5, 9), ijk); + + // node centrered conversion + ijk = t->worldToIndexNodeCentered(xyz); + CPPUNIT_ASSERT_EQUAL(Coord(-2, 4, 9), ijk); + + // index to world space + ijk = Coord(4, 2, -8); + xyz = t->indexToWorld(ijk); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 2.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-4.0, xyz[2], TOL); + + // I/O test + { + std::stringstream + ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); + + t->write(ss); + + t = math::Transform::createLinearTransform(); + + // Since we wrote only a fragment of a VDB file (in particular, we didn't + // write the header), set the file format version number explicitly. + io::setCurrentVersion(ss); + + t->read(ss); + } + + // check map type + CPPUNIT_ASSERT_EQUAL(math::UniformScaleMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[2], TOL); + + ////////// + + // Test: Scale, translation & rotation + t = math::Transform::createLinearTransform(2.0); + + // rotate, 180 deg, (produces a diagonal matrix that can be simplified into a scale map) + // with diagonal -2, 2, -2 + const double PI = std::atan(1.0)*4; + t->preRotate(PI, math::Y_AXIS); + + // this is just a rotation so it will have uniform scale + CPPUNIT_ASSERT(t->hasUniformScale()); + + CPPUNIT_ASSERT_EQUAL(math::ScaleMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[2], TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[2], TOL); + + // translate + t->postTranslate(Vec3d(1.0, 0.0, 1.0)); + + CPPUNIT_ASSERT_EQUAL(math::ScaleTranslateMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[2], TOL); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.5, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.5, xyz[2], TOL); + + + // I/O test + { + std::stringstream + ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); + + t->write(ss); + + t = math::Transform::createLinearTransform(); + + // Since we wrote only a fragment of a VDB file (in particular, we didn't + // write the header), set the file format version number explicitly. + io::setCurrentVersion(ss); + + t->read(ss); + } + + // check map type + CPPUNIT_ASSERT_EQUAL(math::ScaleTranslateMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[2], TOL); + + xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.5, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.5, xyz[2], TOL); + + // new transform + t = math::Transform::createLinearTransform(1.0); + + // rotate 90 deg + t->preRotate( std::atan(1.0) * 2 , math::Y_AXIS); + + // check map type + CPPUNIT_ASSERT_EQUAL(math::AffineMap::mapType(), t->baseMap()->type()); + + xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[2], TOL); + + // I/O test + { + std::stringstream + ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); + + t->write(ss); + + t = math::Transform::createLinearTransform(); + + CPPUNIT_ASSERT_EQUAL(math::UniformScaleMap::mapType(), t->baseMap()->type()); + + xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, xyz[2], TOL); + + // Since we wrote only a fragment of a VDB file (in particular, we didn't + // write the header), set the file format version number explicitly. + io::setCurrentVersion(ss); + + t->read(ss); + } + + // check map type + CPPUNIT_ASSERT_EQUAL(math::AffineMap::mapType(), t->baseMap()->type()); + + xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[2], TOL); +} + + +//////////////////////////////////////// + +void +TestTransform::testTransformEquality() +{ + using namespace openvdb; + + // maps created in different ways may be equivalent + math::Transform::Ptr t1 = math::Transform::createLinearTransform(0.5); + math::Mat4d mat = math::Mat4d::identity(); + mat.preScale(math::Vec3d(0.5, 0.5, 0.5)); + math::Transform::Ptr t2 = math::Transform::createLinearTransform(mat); + + CPPUNIT_ASSERT( *t1 == *t2); + + // test that the auto-convert to the simplest form worked + CPPUNIT_ASSERT( t1->mapType() == t2->mapType()); + + + mat.preScale(math::Vec3d(1., 1., .4)); + math::Transform::Ptr t3 = math::Transform::createLinearTransform(mat); + + CPPUNIT_ASSERT( *t1 != *t3); + + // test equality between different but equivalent maps + math::UniformScaleTranslateMap::Ptr ustmap( + new math::UniformScaleTranslateMap(1.0, math::Vec3d(0,0,0))); + math::Transform::Ptr t4( new math::Transform( ustmap) ); + CPPUNIT_ASSERT( t4->baseMap()->isType() ); + math::Transform::Ptr t5( new math::Transform); // constructs with a scale map + CPPUNIT_ASSERT( t5->baseMap()->isType() ); + + CPPUNIT_ASSERT( *t5 == *t4); + + CPPUNIT_ASSERT( t5->mapType() != t4->mapType() ); + + // test inequatlity of two maps of the same type + math::UniformScaleTranslateMap::Ptr ustmap2( + new math::UniformScaleTranslateMap(1.0, math::Vec3d(1,0,0))); + math::Transform::Ptr t6( new math::Transform( ustmap2) ); + CPPUNIT_ASSERT( t6->baseMap()->isType() ); + CPPUNIT_ASSERT( *t6 != *t4); + + // test comparison of linear to nonlinear map + openvdb::BBoxd bbox(math::Vec3d(0), math::Vec3d(100)); + math::Transform::Ptr frustum = math::Transform::createFrustumTransform(bbox, 0.25, 10); + + CPPUNIT_ASSERT( *frustum != *t1 ); + + +} +//////////////////////////////////////// + +void +TestTransform::testBackwardCompatibility() +{ + using namespace openvdb; + double TOL = 1e-7; + + // Register maps + math::MapRegistry::clear(); + math::AffineMap::registerMap(); + math::ScaleMap::registerMap(); + math::TranslationMap::registerMap(); + math::ScaleTranslateMap::registerMap(); + + std::stringstream + ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); + + + ////////// + + // Construct and write out an old transform that gets converted + // into a ScaleMap on read. + + // First write the old transform type name + writeString(ss, Name("LinearTransform")); + + // Second write the old transform's base class membes. + Coord tmpMin(0), tmpMax(1); + ss.write(reinterpret_cast(&tmpMin), sizeof(Coord::ValueType) * 3); + ss.write(reinterpret_cast(&tmpMax), sizeof(Coord::ValueType) * 3); + + // Last write out the old linear transform's members + math::Mat4d tmpLocalToWorld = math::Mat4d::identity(), + tmpWorldToLocal = math::Mat4d::identity(), + tmpVoxelToLocal = math::Mat4d::identity(), + tmpLocalToVoxel = math::Mat4d::identity(); + + tmpVoxelToLocal.preScale(math::Vec3d(0.5, 0.5, 0.5)); + + tmpLocalToWorld.write(ss); + tmpWorldToLocal.write(ss); + tmpVoxelToLocal.write(ss); + tmpLocalToVoxel.write(ss); + + // Read in the old transform and converting it to the new map based implementation. + + math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); + + t->read(ss); + + // check map type + CPPUNIT_ASSERT_EQUAL(math::UniformScaleMap::mapType(), t->baseMap()->type()); + + Vec3d voxelSize = t->voxelSize(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, voxelSize[2], TOL); + + Vec3d xyz = t->worldToIndex(Vec3d(-1.0, 2.0, 4.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(-2.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 4.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 8.0, xyz[2], TOL); + + + ////////// + + // Construct and write out an old transform that gets converted + // into a ScaleTranslateMap on read. + + ss.clear(); + writeString(ss, Name("LinearTransform")); + ss.write(reinterpret_cast(&tmpMin), sizeof(Coord::ValueType) * 3); + ss.write(reinterpret_cast(&tmpMax), sizeof(Coord::ValueType) * 3); + tmpLocalToWorld = math::Mat4d::identity(), + tmpWorldToLocal = math::Mat4d::identity(), + tmpVoxelToLocal = math::Mat4d::identity(), + tmpLocalToVoxel = math::Mat4d::identity(); + + tmpVoxelToLocal.preScale(math::Vec3d(2.0, 2.0, 2.0)); + tmpLocalToWorld.setTranslation(math::Vec3d(1.0, 0.0, 1.0)); + + tmpLocalToWorld.write(ss); + tmpWorldToLocal.write(ss); + tmpVoxelToLocal.write(ss); + tmpLocalToVoxel.write(ss); + + // Read in the old transform and converting it to the new map based implementation. + + t = math::Transform::createLinearTransform(); // rest transform + t->read(ss); + + CPPUNIT_ASSERT_EQUAL(math::UniformScaleTranslateMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.0, voxelSize[2], TOL); + + xyz = t->worldToIndex(Vec3d(1.0, 1.0, 1.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.5, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(0.0, xyz[2], TOL); + + + ////////// + + // Construct and write out an old transform that gets converted + // into a AffineMap on read. + + ss.clear(); + writeString(ss, Name("LinearTransform")); + ss.write(reinterpret_cast(&tmpMin), sizeof(Coord::ValueType) * 3); + ss.write(reinterpret_cast(&tmpMax), sizeof(Coord::ValueType) * 3); + tmpLocalToWorld = math::Mat4d::identity(), + tmpWorldToLocal = math::Mat4d::identity(), + tmpVoxelToLocal = math::Mat4d::identity(), + tmpLocalToVoxel = math::Mat4d::identity(); + + tmpVoxelToLocal.preScale(math::Vec3d(1.0, 1.0, 1.0)); + tmpLocalToWorld.preRotate( math::Y_AXIS, std::atan(1.0) * 2); + + tmpLocalToWorld.write(ss); + tmpWorldToLocal.write(ss); + tmpVoxelToLocal.write(ss); + tmpLocalToVoxel.write(ss); + + // Read in the old transform and converting it to the new map based implementation. + + t = math::Transform::createLinearTransform(); // rest transform + t->read(ss); + + CPPUNIT_ASSERT_EQUAL(math::AffineMap::mapType(), t->baseMap()->type()); + + voxelSize = t->voxelSize(); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, voxelSize[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, voxelSize[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, voxelSize[2], TOL); + + xyz = t->worldToIndex(Vec3d(1.0, 1.0, 1.0)); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(-1.0, xyz[0], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[1], TOL); + CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, xyz[2], TOL); +} + + +void +TestTransform::testIsIdentity() +{ + using namespace openvdb; + math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); + + CPPUNIT_ASSERT(t->isIdentity()); + + t->preScale(Vec3d(2,2,2)); + + CPPUNIT_ASSERT(!t->isIdentity()); + + t->preScale(Vec3d(0.5,0.5,0.5)); + CPPUNIT_ASSERT(t->isIdentity()); + + BBoxd bbox(math::Vec3d(-5,-5,0), Vec3d(5,5,10)); + math::Transform::Ptr f = math::Transform::createFrustumTransform(bbox, + /*taper*/ 1, + /*depth*/ 1, + /*voxel size*/ 1); + f->preScale(Vec3d(10,10,10)); + + CPPUNIT_ASSERT(f->isIdentity()); + + // rotate by PI/2 + f->postRotate(std::atan(1.0)*2, math::Y_AXIS); + CPPUNIT_ASSERT(!f->isIdentity()); + + f->postRotate(std::atan(1.0)*6, math::Y_AXIS); + CPPUNIT_ASSERT(f->isIdentity()); +} + + +void +TestTransform::testBoundingBoxes() +{ + using namespace openvdb; + + { + math::Transform::ConstPtr t = math::Transform::createLinearTransform(0.5); + + const BBoxd bbox(Vec3d(-8.0), Vec3d(16.0)); + + BBoxd xBBox = t->indexToWorld(bbox); + CPPUNIT_ASSERT_EQUAL(Vec3d(-4.0), xBBox.min()); + CPPUNIT_ASSERT_EQUAL(Vec3d(8.0), xBBox.max()); + + xBBox = t->worldToIndex(xBBox); + CPPUNIT_ASSERT_EQUAL(bbox.min(), xBBox.min()); + CPPUNIT_ASSERT_EQUAL(bbox.max(), xBBox.max()); + } + { + const double PI = std::atan(1.0) * 4.0, SQRT2 = std::sqrt(2.0); + + math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); + t->preRotate(PI / 4.0, math::Z_AXIS); + + const BBoxd bbox(Vec3d(-10.0), Vec3d(10.0)); + + BBoxd xBBox = t->indexToWorld(bbox); // expand in x and y by sqrt(2) + CPPUNIT_ASSERT(Vec3d(-10.0 * SQRT2, -10.0 * SQRT2, -10.0).eq(xBBox.min())); + CPPUNIT_ASSERT(Vec3d(10.0 * SQRT2, 10.0 * SQRT2, 10.0).eq(xBBox.max())); + + xBBox = t->worldToIndex(xBBox); // expand again in x and y by sqrt(2) + CPPUNIT_ASSERT(Vec3d(-20.0, -20.0, -10.0).eq(xBBox.min())); + CPPUNIT_ASSERT(Vec3d(20.0, 20.0, 10.0).eq(xBBox.max())); + } + + /// @todo frustum transform +} + + +//////////////////////////////////////// + + +/// @todo Test the new frustum transform. +/* +void +TestTransform::testNonlinearTransform() +{ + using namespace openvdb; + double TOL = 1e-7; +} +*/ diff --git a/openvdb/unittest/TestTree.cc b/openvdb/unittest/TestTree.cc new file mode 100644 index 00000000..bb111350 --- /dev/null +++ b/openvdb/unittest/TestTree.cc @@ -0,0 +1,3166 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include // for remove() +#include +#include +#include +#include +#include +#include +#include // for tools::setValueOnMin(), et al. +#include +#include // for io::RealToHalf +#include // for Abs() +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + + +using ValueType = float; +using LeafNodeType = openvdb::tree::LeafNode; +using InternalNodeType1 = openvdb::tree::InternalNode; +using InternalNodeType2 = openvdb::tree::InternalNode; +using RootNodeType = openvdb::tree::RootNode; + + +class TestTree: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestTree); + CPPUNIT_TEST(testChangeBackground); + CPPUNIT_TEST(testHalf); + CPPUNIT_TEST(testValues); + CPPUNIT_TEST(testSetValue); + CPPUNIT_TEST(testSetValueOnly); + CPPUNIT_TEST(testSetValueInPlace); + CPPUNIT_TEST(testEvalMinMax); + CPPUNIT_TEST(testResize); + CPPUNIT_TEST(testHasSameTopology); + CPPUNIT_TEST(testTopologyCopy); + CPPUNIT_TEST(testIterators); + CPPUNIT_TEST(testIO); + CPPUNIT_TEST(testNegativeIndexing); + CPPUNIT_TEST(testDeepCopy); + CPPUNIT_TEST(testMerge); + CPPUNIT_TEST(testVoxelizeActiveTiles); + CPPUNIT_TEST(testTopologyUnion); + CPPUNIT_TEST(testTopologyIntersection); + CPPUNIT_TEST(testTopologyDifference); + CPPUNIT_TEST(testFill); + CPPUNIT_TEST(testSignedFloodFill); + CPPUNIT_TEST(testPruneInactive); + CPPUNIT_TEST(testPruneLevelSet); + CPPUNIT_TEST(testTouchLeaf); + CPPUNIT_TEST(testProbeLeaf); + CPPUNIT_TEST(testAddLeaf); + CPPUNIT_TEST(testAddTile); + CPPUNIT_TEST(testGetNodes); + CPPUNIT_TEST(testStealNodes); + CPPUNIT_TEST(testProcessBBox); + CPPUNIT_TEST(testStealNode); +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + CPPUNIT_TEST(testNodeCount); +#endif + CPPUNIT_TEST(testRootNode); + CPPUNIT_TEST(testInternalNode); + CPPUNIT_TEST_SUITE_END(); + + void testChangeBackground(); + void testHalf(); + void testValues(); + void testSetValue(); + void testSetValueOnly(); + void testSetValueInPlace(); + void testEvalMinMax(); + void testResize(); + void testHasSameTopology(); + void testTopologyCopy(); + void testIterators(); + void testIO(); + void testNegativeIndexing(); + void testDeepCopy(); + void testMerge(); + void testVoxelizeActiveTiles(); + void testTopologyUnion(); + void testTopologyIntersection(); + void testTopologyDifference(); + void testFill(); + void testSignedFloodFill(); + void testPruneLevelSet(); + void testPruneInactive(); + void testTouchLeaf(); + void testProbeLeaf(); + void testAddLeaf(); + void testAddTile(); + void testGetNodes(); + void testStealNodes(); + void testProcessBBox(); + void testStealNode(); +#if OPENVDB_ABI_VERSION_NUMBER >= 7 + void testNodeCount(); +#endif + void testRootNode(); + void testInternalNode(); + +private: + template void testWriteHalf(); + template void doTestMerge(openvdb::MergePolicy); + template void doTestTopologyDifference(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTree); + +void +TestTree::testChangeBackground() +{ + const int dim = 128; + const openvdb::Vec3f center(0.35f, 0.35f, 0.35f); + const float + radius = 0.15f, + voxelSize = 1.0f / (dim-1), + halfWidth = 4, + gamma = halfWidth * voxelSize; + using GridT = openvdb::FloatGrid; + const openvdb::Coord inside(int(center[0]*dim), int(center[1]*dim), int(center[2]*dim)); + const openvdb::Coord outside(dim); + + {//changeBackground + GridT::Ptr grid = openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, halfWidth); + openvdb::FloatTree& tree = grid->tree(); + + CPPUNIT_ASSERT(grid->tree().isValueOff(outside)); + ASSERT_DOUBLES_EXACTLY_EQUAL( gamma, tree.getValue(outside)); + + CPPUNIT_ASSERT(tree.isValueOff(inside)); + ASSERT_DOUBLES_EXACTLY_EQUAL(-gamma, tree.getValue(inside)); + + const float background = gamma*3.43f; + openvdb::tools::changeBackground(tree, background); + + CPPUNIT_ASSERT(grid->tree().isValueOff(outside)); + ASSERT_DOUBLES_EXACTLY_EQUAL( background, tree.getValue(outside)); + + CPPUNIT_ASSERT(tree.isValueOff(inside)); + ASSERT_DOUBLES_EXACTLY_EQUAL(-background, tree.getValue(inside)); + } + + {//changeLevelSetBackground + GridT::Ptr grid = openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, halfWidth); + openvdb::FloatTree& tree = grid->tree(); + + CPPUNIT_ASSERT(grid->tree().isValueOff(outside)); + ASSERT_DOUBLES_EXACTLY_EQUAL( gamma, tree.getValue(outside)); + + CPPUNIT_ASSERT(tree.isValueOff(inside)); + ASSERT_DOUBLES_EXACTLY_EQUAL(-gamma, tree.getValue(inside)); + + const float v1 = gamma*3.43f, v2 = -gamma*6.457f; + openvdb::tools::changeAsymmetricLevelSetBackground(tree, v1, v2); + + CPPUNIT_ASSERT(grid->tree().isValueOff(outside)); + ASSERT_DOUBLES_EXACTLY_EQUAL( v1, tree.getValue(outside)); + + CPPUNIT_ASSERT(tree.isValueOff(inside)); + ASSERT_DOUBLES_EXACTLY_EQUAL( v2, tree.getValue(inside)); + } +} + + +void +TestTree::testHalf() +{ + testWriteHalf(); + testWriteHalf(); + testWriteHalf(); + testWriteHalf(); + testWriteHalf(); + testWriteHalf(); + + // Verify that non-floating-point grids are saved correctly. + testWriteHalf(); + testWriteHalf(); + testWriteHalf(); +} + + +template +void +TestTree::testWriteHalf() +{ + using GridType = openvdb::Grid; + using ValueT = typename TreeType::ValueType; + ValueT background(5); + GridType grid(background); + + unittest_util::makeSphere(openvdb::Coord(64, 64, 64), + openvdb::Vec3f(35, 30, 40), + /*radius=*/10, grid, + /*dx=*/1.0f, unittest_util::SPHERE_DENSE); + CPPUNIT_ASSERT(!grid.tree().empty()); + + // Write grid blocks in both float and half formats. + std::ostringstream outFull(std::ios_base::binary); + grid.setSaveFloatAsHalf(false); + grid.writeBuffers(outFull); + outFull.flush(); + const size_t fullBytes = outFull.str().size(); + CPPUNIT_ASSERT_MESSAGE("wrote empty full float buffers", fullBytes > 0); + + std::ostringstream outHalf(std::ios_base::binary); + grid.setSaveFloatAsHalf(true); + grid.writeBuffers(outHalf); + outHalf.flush(); + const size_t halfBytes = outHalf.str().size(); + CPPUNIT_ASSERT_MESSAGE("wrote empty half float buffers", halfBytes > 0); + + if (openvdb::io::RealToHalf::isReal) { + // Verify that the half float file is "significantly smaller" than the full float file. + std::ostringstream ostr; + ostr << "half float buffers not significantly smaller than full float (" + << halfBytes << " vs. " << fullBytes << " bytes)"; + CPPUNIT_ASSERT_MESSAGE(ostr.str(), halfBytes < size_t(0.75 * double(fullBytes))); + } else { + // For non-real data types, "half float" and "full float" file sizes should be the same. + CPPUNIT_ASSERT_MESSAGE("full float and half float file sizes differ for data of type " + + std::string(openvdb::typeNameAsString()), halfBytes == fullBytes); + } + + // Read back the half float data (converting back to full float in the process), + // then write it out again in half float format. Verify that the resulting file + // is identical to the original half float file. + { + openvdb::Grid gridCopy(grid); + gridCopy.setSaveFloatAsHalf(true); + std::istringstream is(outHalf.str(), std::ios_base::binary); + + // Since the input stream doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(is); + + gridCopy.readBuffers(is); + + std::ostringstream outDiff(std::ios_base::binary); + gridCopy.writeBuffers(outDiff); + outDiff.flush(); + + CPPUNIT_ASSERT_MESSAGE("half-from-full and half-from-half buffers differ", + outHalf.str() == outDiff.str()); + } +} + + +void +TestTree::testValues() +{ + ValueType background=5.0f; + + { + const openvdb::Coord c0(5,10,20), c1(50000,20000,30000); + RootNodeType root_node(background); + const float v0=0.234f, v1=4.5678f; + CPPUNIT_ASSERT(root_node.empty()); + ASSERT_DOUBLES_EXACTLY_EQUAL(root_node.getValue(c0), background); + ASSERT_DOUBLES_EXACTLY_EQUAL(root_node.getValue(c1), background); + root_node.setValueOn(c0, v0); + root_node.setValueOn(c1, v1); + ASSERT_DOUBLES_EXACTLY_EQUAL(v0,root_node.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(v1,root_node.getValue(c1)); + int count=0; + for (int i =0; i<256; ++i) { + for (int j=0; j<256; ++j) { + for (int k=0; k<256; ++k) { + if (root_node.getValue(openvdb::Coord(i,j,k))<1.0f) ++count; + } + } + } + CPPUNIT_ASSERT(count == 1); + } + + { + const openvdb::Coord min(-30,-25,-60), max(60,80,100); + const openvdb::Coord c0(-5,-10,-20), c1(50,20,90), c2(59,67,89); + const float v0=0.234f, v1=4.5678f, v2=-5.673f; + RootNodeType root_node(background); + CPPUNIT_ASSERT(root_node.empty()); + ASSERT_DOUBLES_EXACTLY_EQUAL(background,root_node.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background,root_node.getValue(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background,root_node.getValue(c2)); + root_node.setValueOn(c0, v0); + root_node.setValueOn(c1, v1); + root_node.setValueOn(c2, v2); + ASSERT_DOUBLES_EXACTLY_EQUAL(v0,root_node.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(v1,root_node.getValue(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(v2,root_node.getValue(c2)); + int count=0; + for (int i =min[0]; i(const T& other) const { return value > other.value; } + bool operator==(const T& other) const { return value == other.value; } + + friend std::ostream& operator<<(std::ostream &stream, const T& other) + { + stream << other.value; + return stream; + } +}; + +} // namespace + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace math { + +OPENVDB_EXACT_IS_APPROX_EQUAL(FloatThrowOnCopy) + +} // namespace math +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +void +TestTree::testSetValueInPlace() +{ + using FloatThrowOnCopyTree = openvdb::tree::Tree4::Type; + using FloatThrowOnCopyGrid = openvdb::Grid; + + FloatThrowOnCopyGrid::registerGrid(); + + FloatThrowOnCopyTree tree; + const openvdb::Coord c0(5, 10, 20), c1(-5,-10,-20); + + // tile values can legitimately be copied to assess whether a change in value + // requires the tile to be voxelized, so activate and voxelize active tiles first + + tree.setActiveState(c0, true); + tree.setActiveState(c1, true); + + tree.voxelizeActiveTiles(/*threaded=*/true); + + CPPUNIT_ASSERT_NO_THROW(tree.modifyValue(c0, + [](FloatThrowOnCopy& lhs) { lhs.value = 1.4f; } + )); + + CPPUNIT_ASSERT_NO_THROW(tree.modifyValueAndActiveState(c1, + [](FloatThrowOnCopy& lhs, bool& b) { lhs.value = 2.7f; b = false; } + )); + + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.4f, tree.getValue(c0).value, 1.0e-7); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.7f, tree.getValue(c1).value, 1.0e-7); + + CPPUNIT_ASSERT(tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + + // use slower de-allocation to ensure that no value copying occurs + + tree.root().clear(); +} + +namespace { + +/// Helper function to test openvdb::tree::Tree::evalMinMax() for various tree types +template +void +evalMinMaxTest() +{ + using ValueT = typename TreeT::ValueType; + + struct Local { + static bool isEqual(const ValueT& a, const ValueT& b) { + using namespace openvdb; // for operator>() + return !(math::Abs(a - b) > zeroVal()); + } + }; + + const ValueT + zero = openvdb::zeroVal(), + minusTwo = zero + (-2), + plusTwo = zero + 2, + five = zero + 5; + + TreeT tree(/*background=*/five); + + // No set voxels (defaults to min = max = zero) + ValueT minVal = five, maxVal = five; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT(Local::isEqual(minVal, zero)); + CPPUNIT_ASSERT(Local::isEqual(maxVal, zero)); + + // Only one set voxel + tree.setValue(openvdb::Coord(0, 0, 0), minusTwo); + minVal = maxVal = five; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT(Local::isEqual(minVal, minusTwo)); + CPPUNIT_ASSERT(Local::isEqual(maxVal, minusTwo)); + + // Multiple set voxels, single value + tree.setValue(openvdb::Coord(10, 10, 10), minusTwo); + minVal = maxVal = five; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT(Local::isEqual(minVal, minusTwo)); + CPPUNIT_ASSERT(Local::isEqual(maxVal, minusTwo)); + + // Multiple set voxels, multiple values + tree.setValue(openvdb::Coord(10, 10, 10), plusTwo); + tree.setValue(openvdb::Coord(-10, -10, -10), zero); + minVal = maxVal = five; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT(Local::isEqual(minVal, minusTwo)); + CPPUNIT_ASSERT(Local::isEqual(maxVal, plusTwo)); +} + +/// Specialization for boolean trees +template<> +void +evalMinMaxTest() +{ + openvdb::BoolTree tree(/*background=*/false); + + // No set voxels (defaults to min = max = zero) + bool minVal = true, maxVal = false; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(false, minVal); + CPPUNIT_ASSERT_EQUAL(false, maxVal); + + // Only one set voxel + tree.setValue(openvdb::Coord(0, 0, 0), true); + minVal = maxVal = false; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(true, minVal); + CPPUNIT_ASSERT_EQUAL(true, maxVal); + + // Multiple set voxels, single value + tree.setValue(openvdb::Coord(-10, -10, -10), true); + minVal = maxVal = false; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(true, minVal); + CPPUNIT_ASSERT_EQUAL(true, maxVal); + + // Multiple set voxels, multiple values + tree.setValue(openvdb::Coord(10, 10, 10), false); + minVal = true; maxVal = false; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(false, minVal); + CPPUNIT_ASSERT_EQUAL(true, maxVal); +} + +/// Specialization for string trees +template<> +void +evalMinMaxTest() +{ + const std::string + echidna("echidna"), loris("loris"), pangolin("pangolin"); + + openvdb::StringTree tree(/*background=*/loris); + + // No set voxels (defaults to min = max = zero) + std::string minVal, maxVal; + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(std::string(), minVal); + CPPUNIT_ASSERT_EQUAL(std::string(), maxVal); + + // Only one set voxel + tree.setValue(openvdb::Coord(0, 0, 0), pangolin); + minVal.clear(); maxVal.clear(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(pangolin, minVal); + CPPUNIT_ASSERT_EQUAL(pangolin, maxVal); + + // Multiple set voxels, single value + tree.setValue(openvdb::Coord(-10, -10, -10), pangolin); + minVal.clear(); maxVal.clear(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(pangolin, minVal); + CPPUNIT_ASSERT_EQUAL(pangolin, maxVal); + + // Multiple set voxels, multiple values + tree.setValue(openvdb::Coord(10, 10, 10), echidna); + minVal.clear(); maxVal.clear(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(echidna, minVal); + CPPUNIT_ASSERT_EQUAL(pangolin, maxVal); +} + +/// Specialization for Coord trees +template<> +void +evalMinMaxTest() +{ + using CoordTree = openvdb::tree::Tree4::Type; + const openvdb::Coord backg(5,4,-6), a(5,4,-7), b(5,5,-6); + + CoordTree tree(backg); + + // No set voxels (defaults to min = max = zero) + openvdb::Coord minVal=openvdb::Coord::max(), maxVal=openvdb::Coord::min(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), minVal); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(0), maxVal); + + // Only one set voxel + tree.setValue(openvdb::Coord(0, 0, 0), a); + minVal=openvdb::Coord::max(); + maxVal=openvdb::Coord::min(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(a, minVal); + CPPUNIT_ASSERT_EQUAL(a, maxVal); + + // Multiple set voxels + tree.setValue(openvdb::Coord(-10, -10, -10), b); + minVal=openvdb::Coord::max(); + maxVal=openvdb::Coord::min(); + tree.evalMinMax(minVal, maxVal); + CPPUNIT_ASSERT_EQUAL(a, minVal); + CPPUNIT_ASSERT_EQUAL(b, maxVal); +} + +} // unnamed namespace + +void +TestTree::testEvalMinMax() +{ + evalMinMaxTest(); + evalMinMaxTest(); + evalMinMaxTest(); + evalMinMaxTest(); + evalMinMaxTest(); + evalMinMaxTest(); + evalMinMaxTest(); +} + + +void +TestTree::testResize() +{ + ValueType background=5.0f; + //use this when resize is implemented + RootNodeType root_node(background); + CPPUNIT_ASSERT(root_node.getLevel()==3); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, root_node.getValue(openvdb::Coord(5,10,20))); + //fprintf(stdout,"Root grid dim=(%i,%i,%i)\n", + // root_node.getGridDim(0), root_node.getGridDim(1), root_node.getGridDim(2)); + root_node.setValueOn(openvdb::Coord(5,10,20),0.234f); + ASSERT_DOUBLES_EXACTLY_EQUAL(root_node.getValue(openvdb::Coord(5,10,20)) , 0.234f); + root_node.setValueOn(openvdb::Coord(500,200,300),4.5678f); + ASSERT_DOUBLES_EXACTLY_EQUAL(root_node.getValue(openvdb::Coord(500,200,300)) , 4.5678f); + { + ValueType sum=0.0f; + for (RootNodeType::ChildOnIter root_iter = root_node.beginChildOn(); + root_iter.test(); ++root_iter) + { + for (InternalNodeType2::ChildOnIter internal_iter2 = root_iter->beginChildOn(); + internal_iter2.test(); ++internal_iter2) + { + for (InternalNodeType1::ChildOnIter internal_iter1 = + internal_iter2->beginChildOn(); internal_iter1.test(); ++internal_iter1) + { + for (LeafNodeType::ValueOnIter block_iter = + internal_iter1->beginValueOn(); block_iter.test(); ++block_iter) + { + sum += *block_iter; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL(sum, (0.234f + 4.5678f)); + } + + CPPUNIT_ASSERT(root_node.getLevel()==3); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, root_node.getValue(openvdb::Coord(5,11,20))); + { + ValueType sum=0.0f; + for (RootNodeType::ChildOnIter root_iter = root_node.beginChildOn(); + root_iter.test(); ++root_iter) + { + for (InternalNodeType2::ChildOnIter internal_iter2 = root_iter->beginChildOn(); + internal_iter2.test(); ++internal_iter2) + { + for (InternalNodeType1::ChildOnIter internal_iter1 = + internal_iter2->beginChildOn(); internal_iter1.test(); ++internal_iter1) + { + for (LeafNodeType::ValueOnIter block_iter = + internal_iter1->beginValueOn(); block_iter.test(); ++block_iter) + { + sum += *block_iter; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL(sum, (0.234f + 4.5678f)); + } + +} + + +void +TestTree::testHasSameTopology() +{ + // Test using trees of the same type. + { + const float background1=5.0f; + openvdb::FloatTree tree1(background1); + + const float background2=6.0f; + openvdb::FloatTree tree2(background2); + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + tree1.setValue(openvdb::Coord(-10,40,845),3.456f); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(-10,40,845),-3.456f); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + tree1.setValue(openvdb::Coord(1,-500,-8), 1.0f); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(1,-500,-8),1.0f); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + } + // Test using trees of different types. + { + const float background1=5.0f; + openvdb::FloatTree tree1(background1); + + const openvdb::Vec3f background2(1.0f,3.4f,6.0f); + openvdb::Vec3fTree tree2(background2); + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + tree1.setValue(openvdb::Coord(-10,40,845),3.456f); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(-10,40,845),openvdb::Vec3f(1.0f,2.0f,-3.0f)); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + tree1.setValue(openvdb::Coord(1,-500,-8), 1.0f); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(1,-500,-8),openvdb::Vec3f(1.0f,2.0f,-3.0f)); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + } +} + + +void +TestTree::testTopologyCopy() +{ + // Test using trees of the same type. + { + const float background1=5.0f; + openvdb::FloatTree tree1(background1); + tree1.setValue(openvdb::Coord(-10,40,845),3.456f); + tree1.setValue(openvdb::Coord(1,-50,-8), 1.0f); + + const float background2=6.0f, setValue2=3.0f; + openvdb::FloatTree tree2(tree1,background2,setValue2,openvdb::TopologyCopy()); + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + ASSERT_DOUBLES_EXACTLY_EQUAL(background2, tree2.getValue(openvdb::Coord(1,2,3))); + ASSERT_DOUBLES_EXACTLY_EQUAL(setValue2, tree2.getValue(openvdb::Coord(-10,40,845))); + ASSERT_DOUBLES_EXACTLY_EQUAL(setValue2, tree2.getValue(openvdb::Coord(1,-50,-8))); + + tree1.setValue(openvdb::Coord(1,-500,-8), 1.0f); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(1,-500,-8),1.0f); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + } + // Test using trees of different types. + { + const openvdb::Vec3f background1(1.0f,3.4f,6.0f); + openvdb::Vec3fTree tree1(background1); + tree1.setValue(openvdb::Coord(-10,40,845),openvdb::Vec3f(3.456f,-2.3f,5.6f)); + tree1.setValue(openvdb::Coord(1,-50,-8), openvdb::Vec3f(1.0f,3.0f,4.5f)); + + const float background2=6.0f, setValue2=3.0f; + openvdb::FloatTree tree2(tree1,background2,setValue2,openvdb::TopologyCopy()); + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + + ASSERT_DOUBLES_EXACTLY_EQUAL(background2, tree2.getValue(openvdb::Coord(1,2,3))); + ASSERT_DOUBLES_EXACTLY_EQUAL(setValue2, tree2.getValue(openvdb::Coord(-10,40,845))); + ASSERT_DOUBLES_EXACTLY_EQUAL(setValue2, tree2.getValue(openvdb::Coord(1,-50,-8))); + + tree1.setValue(openvdb::Coord(1,-500,-8), openvdb::Vec3f(1.0f,0.0f,-3.0f)); + CPPUNIT_ASSERT(!tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(!tree2.hasSameTopology(tree1)); + + tree2.setValue(openvdb::Coord(1,-500,-8), 1.0f); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree2)); + CPPUNIT_ASSERT(tree2.hasSameTopology(tree1)); + } +} + + +void +TestTree::testIterators() +{ + ValueType background=5.0f; + RootNodeType root_node(background); + root_node.setValueOn(openvdb::Coord(5,10,20),0.234f); + root_node.setValueOn(openvdb::Coord(50000,20000,30000),4.5678f); + { + ValueType sum=0.0f; + for (RootNodeType::ChildOnIter root_iter = root_node.beginChildOn(); + root_iter.test(); ++root_iter) + { + for (InternalNodeType2::ChildOnIter internal_iter2 = root_iter->beginChildOn(); + internal_iter2.test(); ++internal_iter2) + { + for (InternalNodeType1::ChildOnIter internal_iter1 = + internal_iter2->beginChildOn(); internal_iter1.test(); ++internal_iter1) + { + for (LeafNodeType::ValueOnIter block_iter = + internal_iter1->beginValueOn(); block_iter.test(); ++block_iter) + { + sum += *block_iter; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL((0.234f + 4.5678f), sum); + } + { + // As above, but using dense iterators. + ValueType sum = 0.0f, val = 0.0f; + for (RootNodeType::ChildAllIter rootIter = root_node.beginChildAll(); + rootIter.test(); ++rootIter) + { + if (!rootIter.isChildNode()) continue; + + for (InternalNodeType2::ChildAllIter internalIter2 = + rootIter.probeChild(val)->beginChildAll(); internalIter2; ++internalIter2) + { + if (!internalIter2.isChildNode()) continue; + + for (InternalNodeType1::ChildAllIter internalIter1 = + internalIter2.probeChild(val)->beginChildAll(); internalIter1; ++internalIter1) + { + if (!internalIter1.isChildNode()) continue; + + for (LeafNodeType::ValueOnIter leafIter = + internalIter1.probeChild(val)->beginValueOn(); leafIter; ++leafIter) + { + sum += *leafIter; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL((0.234f + 4.5678f), sum); + } + { + ValueType v_sum=0.0f; + openvdb::Coord xyz0, xyz1, xyz2, xyz3, xyzSum(0, 0, 0); + for (RootNodeType::ChildOnIter root_iter = root_node.beginChildOn(); + root_iter.test(); ++root_iter) + { + root_iter.getCoord(xyz3); + for (InternalNodeType2::ChildOnIter internal_iter2 = root_iter->beginChildOn(); + internal_iter2.test(); ++internal_iter2) + { + internal_iter2.getCoord(xyz2); + xyz2 = xyz2 - internal_iter2.parent().origin(); + for (InternalNodeType1::ChildOnIter internal_iter1 = + internal_iter2->beginChildOn(); internal_iter1.test(); ++internal_iter1) + { + internal_iter1.getCoord(xyz1); + xyz1 = xyz1 - internal_iter1.parent().origin(); + for (LeafNodeType::ValueOnIter block_iter = + internal_iter1->beginValueOn(); block_iter.test(); ++block_iter) + { + block_iter.getCoord(xyz0); + xyz0 = xyz0 - block_iter.parent().origin(); + v_sum += *block_iter; + xyzSum = xyzSum + xyz0 + xyz1 + xyz2 + xyz3; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL((0.234f + 4.5678f), v_sum); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(5 + 50000, 10 + 20000, 20 + 30000), xyzSum); + } +} + + +void +TestTree::testIO() +{ + const char* filename = "testIO.dbg"; + openvdb::SharedPtr scopedFile(filename, ::remove); + { + ValueType background=5.0f; + RootNodeType root_node(background); + root_node.setValueOn(openvdb::Coord(5,10,20),0.234f); + root_node.setValueOn(openvdb::Coord(50000,20000,30000),4.5678f); + + std::ofstream os(filename, std::ios_base::binary); + root_node.writeTopology(os); + root_node.writeBuffers(os); + CPPUNIT_ASSERT(!os.fail()); + } + { + ValueType background=2.0f; + RootNodeType root_node(background); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, root_node.getValue(openvdb::Coord(5,10,20))); + { + std::ifstream is(filename, std::ios_base::binary); + // Since the test file doesn't include a VDB header with file format version info, + // tag the input stream explicitly with the current version number. + openvdb::io::setCurrentVersion(is); + root_node.readTopology(is); + root_node.readBuffers(is); + CPPUNIT_ASSERT(!is.fail()); + } + + ASSERT_DOUBLES_EXACTLY_EQUAL(0.234f, root_node.getValue(openvdb::Coord(5,10,20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(5.0f, root_node.getValue(openvdb::Coord(5,11,20))); + ValueType sum=0.0f; + for (RootNodeType::ChildOnIter root_iter = root_node.beginChildOn(); + root_iter.test(); ++root_iter) + { + for (InternalNodeType2::ChildOnIter internal_iter2 = root_iter->beginChildOn(); + internal_iter2.test(); ++internal_iter2) + { + for (InternalNodeType1::ChildOnIter internal_iter1 = + internal_iter2->beginChildOn(); internal_iter1.test(); ++internal_iter1) + { + for (LeafNodeType::ValueOnIter block_iter = + internal_iter1->beginValueOn(); block_iter.test(); ++block_iter) + { + sum += *block_iter; + } + } + } + } + ASSERT_DOUBLES_EXACTLY_EQUAL(sum, (0.234f + 4.5678f)); + } +} + + +void +TestTree::testNegativeIndexing() +{ + ValueType background=5.0f; + openvdb::FloatTree tree(background); + CPPUNIT_ASSERT(tree.empty()); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree.getValue(openvdb::Coord(5,-10,20)), background); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree.getValue(openvdb::Coord(-5000,2000,3000)), background); + tree.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree.setValue(openvdb::Coord( 5, 10,-20),0.3f); + tree.setValue(openvdb::Coord(-5,-10, 20),0.4f); + tree.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree.setValue(openvdb::Coord(-5,-10,-20),0.7f); + tree.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.0f, tree.getValue(openvdb::Coord( 5, 10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.1f, tree.getValue(openvdb::Coord(-5, 10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.2f, tree.getValue(openvdb::Coord( 5,-10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.3f, tree.getValue(openvdb::Coord( 5, 10,-20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.4f, tree.getValue(openvdb::Coord(-5,-10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.5f, tree.getValue(openvdb::Coord(-5, 10,-20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.6f, tree.getValue(openvdb::Coord( 5,-10,-20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.7f, tree.getValue(openvdb::Coord(-5,-10,-20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord(-5000, 2000,-3000))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord( 5000,-2000,-3000))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord(-5000,-2000, 3000))); + int count=0; + for (int i =-25; i<25; ++i) { + for (int j=-25; j<25; ++j) { + for (int k=-25; k<25; ++k) { + if (tree.getValue(openvdb::Coord(i,j,k))<1.0f) { + //fprintf(stderr,"(%i,%i,%i)=%f\n",i,j,k,tree.getValue(openvdb::Coord(i,j,k))); + ++count; + } + } + } + } + CPPUNIT_ASSERT(count == 8); + int count2 = 0; + openvdb::Coord xyz; + for (openvdb::FloatTree::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + ++count2; + xyz = iter.getCoord(); + //std::cerr << xyz << " = " << *iter << "\n"; + } + CPPUNIT_ASSERT(count2 == 11); + CPPUNIT_ASSERT(tree.activeVoxelCount() == 11); + { + count2 = 0; + for (openvdb::FloatTree::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + ++count2; + xyz = iter.getCoord(); + //std::cerr << xyz << " = " << *iter << "\n"; + } + CPPUNIT_ASSERT(count2 == 11); + CPPUNIT_ASSERT(tree.activeVoxelCount() == 11); + } +} + + +void +TestTree::testDeepCopy() +{ + // set up a tree + const float fillValue1=5.0f; + openvdb::FloatTree tree1(fillValue1); + tree1.setValue(openvdb::Coord(-10,40,845), 3.456f); + tree1.setValue(openvdb::Coord(1,-50,-8), 1.0f); + + // make a deep copy of the tree + openvdb::TreeBase::Ptr newTree = tree1.copy(); + + // cast down to the concrete type to query values + openvdb::FloatTree *pTree2 = dynamic_cast(newTree.get()); + + // compare topology + CPPUNIT_ASSERT(tree1.hasSameTopology(*pTree2)); + CPPUNIT_ASSERT(pTree2->hasSameTopology(tree1)); + + // trees should be equal + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue1, pTree2->getValue(openvdb::Coord(1,2,3))); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.456f, pTree2->getValue(openvdb::Coord(-10,40,845))); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0f, pTree2->getValue(openvdb::Coord(1,-50,-8))); + + // change 1 value in tree2 + openvdb::Coord changeCoord(1, -500, -8); + pTree2->setValue(changeCoord, 1.0f); + + // topology should no longer match + CPPUNIT_ASSERT(!tree1.hasSameTopology(*pTree2)); + CPPUNIT_ASSERT(!pTree2->hasSameTopology(tree1)); + + // query changed value and make sure it's different between trees + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue1, tree1.getValue(changeCoord)); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0f, pTree2->getValue(changeCoord)); +} + + +void +TestTree::testMerge() +{ + ValueType background=5.0f; + openvdb::FloatTree tree0(background), tree1(background), tree2(background); + CPPUNIT_ASSERT(tree2.empty()); + tree0.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree0.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree0.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree0.setValue(openvdb::Coord( 5, 10,-20),0.3f); + tree1.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree1.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree1.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree1.setValue(openvdb::Coord( 5, 10,-20),0.3f); + + tree0.setValue(openvdb::Coord(-5,-10, 20),0.4f); + tree0.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree0.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree0.setValue(openvdb::Coord(-5,-10,-20),0.7f); + tree0.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree0.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree0.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + tree2.setValue(openvdb::Coord(-5,-10, 20),0.4f); + tree2.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree2.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree2.setValue(openvdb::Coord(-5,-10,-20),0.7f); + tree2.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + + CPPUNIT_ASSERT(tree0.leafCount()!=tree1.leafCount()); + CPPUNIT_ASSERT(tree0.leafCount()!=tree2.leafCount()); + + CPPUNIT_ASSERT(!tree2.empty()); + tree1.merge(tree2, openvdb::MERGE_ACTIVE_STATES); + CPPUNIT_ASSERT(tree2.empty()); + CPPUNIT_ASSERT(tree0.leafCount()==tree1.leafCount()); + CPPUNIT_ASSERT(tree0.nonLeafCount()==tree1.nonLeafCount()); + CPPUNIT_ASSERT(tree0.activeLeafVoxelCount()==tree1.activeLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveLeafVoxelCount()==tree1.inactiveLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.activeVoxelCount()==tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveVoxelCount()==tree1.inactiveVoxelCount()); + + for (openvdb::FloatTree::ValueOnCIter iter0 = tree0.cbeginValueOn(); iter0; ++iter0) { + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter0,tree1.getValue(iter0.getCoord())); + } + + // Test active tile support. + { + using namespace openvdb; + FloatTree treeA(/*background*/0.0), treeB(/*background*/0.0); + + treeA.fill(CoordBBox(Coord(16,16,16), Coord(31,31,31)), /*value*/1.0); + treeB.fill(CoordBBox(Coord(0,0,0), Coord(15,15,15)), /*value*/1.0); + + CPPUNIT_ASSERT_EQUAL(4096, int(treeA.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(4096, int(treeB.activeVoxelCount())); + + treeA.merge(treeB, MERGE_ACTIVE_STATES); + + CPPUNIT_ASSERT_EQUAL(8192, int(treeA.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(0, int(treeB.activeVoxelCount())); + } + + doTestMerge(openvdb::MERGE_NODES); + doTestMerge(openvdb::MERGE_ACTIVE_STATES); + doTestMerge(openvdb::MERGE_ACTIVE_STATES_AND_NODES); + + doTestMerge(openvdb::MERGE_NODES); + doTestMerge(openvdb::MERGE_ACTIVE_STATES); + doTestMerge(openvdb::MERGE_ACTIVE_STATES_AND_NODES); +} + + +template +void +TestTree::doTestMerge(openvdb::MergePolicy policy) +{ + using namespace openvdb; + + TreeType treeA, treeB; + + using RootT = typename TreeType::RootNodeType; + using LeafT = typename TreeType::LeafNodeType; + + const typename TreeType::ValueType val(1); + const int + depth = static_cast(treeA.treeDepth()), + leafDim = static_cast(LeafT::dim()), + leafSize = static_cast(LeafT::size()); + // Coords that are in a different top-level branch than (0, 0, 0) + const Coord pos(static_cast(RootT::getChildDim())); + + treeA.setValueOff(pos, val); + treeA.setValueOff(-pos, val); + + treeB.setValueOff(Coord(0), val); + treeB.fill(CoordBBox(pos, pos.offsetBy(leafDim - 1)), val, /*active=*/true); + treeB.setValueOn(-pos, val); + + // treeA treeB . + // . + // R R . + // / \ /|\ . + // I I I I I . + // / \ / | \ . + // I I I I I . + // / \ / | on x SIZE . + // L L L L . + // off off on off . + + CPPUNIT_ASSERT_EQUAL(0, int(treeA.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(leafSize + 1, int(treeB.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(2, int(treeA.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(treeB.leafCount())); + CPPUNIT_ASSERT_EQUAL(2*(depth-2)+1, int(treeA.nonLeafCount())); // 2 branches (II+II+R) + CPPUNIT_ASSERT_EQUAL(3*(depth-2)+1, int(treeB.nonLeafCount())); // 3 branches (II+II+II+R) + + treeA.merge(treeB, policy); + + // MERGE_NODES MERGE_ACTIVE_STATES MERGE_ACTIVE_STATES_AND_NODES . + // . + // R R R . + // /|\ /|\ /|\ . + // I I I I I I I I I . + // / | \ / | \ / | \ . + // I I I I I I I I I . + // / | \ / | on x SIZE / | \ . + // L L L L L L L L . + // off off off on off on off on x SIZE . + + switch (policy) { + case MERGE_NODES: + CPPUNIT_ASSERT_EQUAL(0, int(treeA.activeVoxelCount())); + CPPUNIT_ASSERT_EQUAL(2 + 1, int(treeA.leafCount())); // 1 leaf node stolen from B + CPPUNIT_ASSERT_EQUAL(3*(depth-2)+1, int(treeA.nonLeafCount())); // 3 branches (II+II+II+R) + break; + case MERGE_ACTIVE_STATES: + CPPUNIT_ASSERT_EQUAL(2, int(treeA.leafCount())); // 1 leaf stolen, 1 replaced with tile + CPPUNIT_ASSERT_EQUAL(3*(depth-2)+1, int(treeA.nonLeafCount())); // 3 branches (II+II+II+R) + CPPUNIT_ASSERT_EQUAL(leafSize + 1, int(treeA.activeVoxelCount())); + break; + case MERGE_ACTIVE_STATES_AND_NODES: + CPPUNIT_ASSERT_EQUAL(2 + 1, int(treeA.leafCount())); // 1 leaf node stolen from B + CPPUNIT_ASSERT_EQUAL(3*(depth-2)+1, int(treeA.nonLeafCount())); // 3 branches (II+II+II+R) + CPPUNIT_ASSERT_EQUAL(leafSize + 1, int(treeA.activeVoxelCount())); + break; + } + CPPUNIT_ASSERT(treeB.empty()); +} + + +void +TestTree::testVoxelizeActiveTiles() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + // Use a small custom tree so we don't run out of memory when + // tiles are converted to dense leafs :) + using MyTree = openvdb::tree::Tree4::Type; + float background=5.0f; + const Coord xyz[] = {Coord(-1,-2,-3),Coord( 1, 2, 3)}; + //check two leaf nodes and two tiles at each level 1, 2 and 3 + const int tile_size[4]={0, 1<<2, 1<<(2*2), 1<<(3*2)}; + // serial version + for (int level=0; level<=3; ++level) { + + MyTree tree(background); + CPPUNIT_ASSERT_EQUAL(-1,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(-1,tree.getValueDepth(xyz[1])); + + if (level==0) { + tree.setValue(xyz[0], 1.0f); + tree.setValue(xyz[1], 1.0f); + } else { + const int n = tile_size[level]; + tree.fill(CoordBBox::createCube(Coord(-n,-n,-n), n), 1.0f, true); + tree.fill(CoordBBox::createCube(Coord( 0, 0, 0), n), 1.0f, true); + } + + CPPUNIT_ASSERT_EQUAL(3-level,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(3-level,tree.getValueDepth(xyz[1])); + + tree.voxelizeActiveTiles(false); + + CPPUNIT_ASSERT_EQUAL(3 ,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(3 ,tree.getValueDepth(xyz[1])); + } + // multi-threaded version + for (int level=0; level<=3; ++level) { + + MyTree tree(background); + CPPUNIT_ASSERT_EQUAL(-1,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(-1,tree.getValueDepth(xyz[1])); + + if (level==0) { + tree.setValue(xyz[0], 1.0f); + tree.setValue(xyz[1], 1.0f); + } else { + const int n = tile_size[level]; + tree.fill(CoordBBox::createCube(Coord(-n,-n,-n), n), 1.0f, true); + tree.fill(CoordBBox::createCube(Coord( 0, 0, 0), n), 1.0f, true); + } + + CPPUNIT_ASSERT_EQUAL(3-level,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(3-level,tree.getValueDepth(xyz[1])); + + tree.voxelizeActiveTiles(true); + + CPPUNIT_ASSERT_EQUAL(3 ,tree.getValueDepth(xyz[0])); + CPPUNIT_ASSERT_EQUAL(3 ,tree.getValueDepth(xyz[1])); + } +#if 0 + const CoordBBox bbox(openvdb::Coord(-30,-50,-30), openvdb::Coord(530,610,623)); + {// benchmark serial + MyTree tree(background); + tree.sparseFill( bbox, 1.0f, /*state*/true); + openvdb::util::CpuTimer timer("\nserial voxelizeActiveTiles"); + tree.voxelizeActiveTiles(/*threaded*/false); + timer.stop(); + } + {// benchmark parallel + MyTree tree(background); + tree.sparseFill( bbox, 1.0f, /*state*/true); + openvdb::util::CpuTimer timer("\nparallel voxelizeActiveTiles"); + tree.voxelizeActiveTiles(/*threaded*/true); + timer.stop(); + } +#endif +} + + +void +TestTree::testTopologyUnion() +{ + {//super simple test with only two active values + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + tree1.setValue(openvdb::Coord( 8, 11, 11), 2.0f); + openvdb::FloatTree tree2(tree1); + + tree1.topologyUnion(tree0); + + for (openvdb::FloatTree::ValueOnCIter iter = tree0.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(tree1.isValueOn(iter.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree2.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(tree1.isValueOn(iter.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree2.getValue(iter.getCoord())); + } + } + {// test using setValue + ValueType background=5.0f; + openvdb::FloatTree tree0(background), tree1(background), tree2(background); + CPPUNIT_ASSERT(tree2.empty()); + // tree0 = tree1.topologyUnion(tree2) + tree0.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree0.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree0.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree0.setValue(openvdb::Coord( 5, 10,-20),0.3f); + tree1.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree1.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree1.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree1.setValue(openvdb::Coord( 5, 10,-20),0.3f); + + tree0.setValue(openvdb::Coord(-5,-10, 20),background); + tree0.setValue(openvdb::Coord(-5, 10,-20),background); + tree0.setValue(openvdb::Coord( 5,-10,-20),background); + tree0.setValue(openvdb::Coord(-5,-10,-20),background); + tree0.setValue(openvdb::Coord(-5000, 2000,-3000),background); + tree0.setValue(openvdb::Coord( 5000,-2000,-3000),background); + tree0.setValue(openvdb::Coord(-5000,-2000, 3000),background); + tree2.setValue(openvdb::Coord(-5,-10, 20),0.4f); + tree2.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree2.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree2.setValue(openvdb::Coord(-5,-10,-20),0.7f); + tree2.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + + // tree3 has the same topology as tree2 but a different value type + const openvdb::Vec3f background2(1.0f,3.4f,6.0f), vec_val(3.1f,5.3f,-9.5f); + openvdb::Vec3fTree tree3(background2); + for (openvdb::FloatTree::ValueOnCIter iter2 = tree2.cbeginValueOn(); iter2; ++iter2) { + tree3.setValue(iter2.getCoord(), vec_val); + } + + CPPUNIT_ASSERT(tree0.leafCount()!=tree1.leafCount()); + CPPUNIT_ASSERT(tree0.leafCount()!=tree2.leafCount()); + CPPUNIT_ASSERT(tree0.leafCount()!=tree3.leafCount()); + + CPPUNIT_ASSERT(!tree2.empty()); + CPPUNIT_ASSERT(!tree3.empty()); + openvdb::FloatTree tree1_copy(tree1); + + //tree1.topologyUnion(tree2);//should make tree1 = tree0 + tree1.topologyUnion(tree3);//should make tree1 = tree0 + + CPPUNIT_ASSERT(tree0.leafCount()==tree1.leafCount()); + CPPUNIT_ASSERT(tree0.nonLeafCount()==tree1.nonLeafCount()); + CPPUNIT_ASSERT(tree0.activeLeafVoxelCount()==tree1.activeLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveLeafVoxelCount()==tree1.inactiveLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.activeVoxelCount()==tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveVoxelCount()==tree1.inactiveVoxelCount()); + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree0)); + CPPUNIT_ASSERT(tree0.hasSameTopology(tree1)); + + for (openvdb::FloatTree::ValueOnCIter iter2 = tree2.cbeginValueOn(); iter2; ++iter2) { + CPPUNIT_ASSERT(tree1.isValueOn(iter2.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter1 = tree1.cbeginValueOn(); iter1; ++iter1) { + CPPUNIT_ASSERT(tree0.isValueOn(iter1.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter0 = tree0.cbeginValueOn(); iter0; ++iter0) { + CPPUNIT_ASSERT(tree1.isValueOn(iter0.getCoord())); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter0,tree1.getValue(iter0.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1_copy.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(tree1.isValueOn(iter.getCoord())); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree1.getValue(iter.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree3.isValueOn(p) || tree1_copy.isValueOn(p)); + } + } + { + ValueType background=5.0f; + openvdb::FloatTree tree0(background), tree1(background), tree2(background); + CPPUNIT_ASSERT(tree2.empty()); + // tree0 = tree1.topologyUnion(tree2) + tree0.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree0.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree0.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree0.setValue(openvdb::Coord( 5, 10,-20),0.3f); + tree1.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree1.setValue(openvdb::Coord(-5, 10, 20),0.1f); + tree1.setValue(openvdb::Coord( 5,-10, 20),0.2f); + tree1.setValue(openvdb::Coord( 5, 10,-20),0.3f); + + tree0.setValue(openvdb::Coord(-5,-10, 20),background); + tree0.setValue(openvdb::Coord(-5, 10,-20),background); + tree0.setValue(openvdb::Coord( 5,-10,-20),background); + tree0.setValue(openvdb::Coord(-5,-10,-20),background); + tree0.setValue(openvdb::Coord(-5000, 2000,-3000),background); + tree0.setValue(openvdb::Coord( 5000,-2000,-3000),background); + tree0.setValue(openvdb::Coord(-5000,-2000, 3000),background); + tree2.setValue(openvdb::Coord(-5,-10, 20),0.4f); + tree2.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree2.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree2.setValue(openvdb::Coord(-5,-10,-20),0.7f); + tree2.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + + // tree3 has the same topology as tree2 but a different value type + const openvdb::Vec3f background2(1.0f,3.4f,6.0f), vec_val(3.1f,5.3f,-9.5f); + openvdb::Vec3fTree tree3(background2); + + for (openvdb::FloatTree::ValueOnCIter iter2 = tree2.cbeginValueOn(); iter2; ++iter2) { + tree3.setValue(iter2.getCoord(), vec_val); + } + + openvdb::FloatTree tree4(tree1);//tree4 = tree1 + openvdb::FloatTree tree5(tree1);//tree5 = tree1 + + tree1.topologyUnion(tree3);//should make tree1 = tree0 + + CPPUNIT_ASSERT(tree1.hasSameTopology(tree0)); + + for (openvdb::Vec3fTree::ValueOnCIter iter3 = tree3.cbeginValueOn(); iter3; ++iter3) { + tree4.setValueOn(iter3.getCoord()); + const openvdb::Coord p = iter3.getCoord(); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree1.getValue(p),tree5.getValue(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree4.getValue(p),tree5.getValue(p)); + } + + CPPUNIT_ASSERT(tree4.hasSameTopology(tree0)); + + for (openvdb::FloatTree::ValueOnCIter iter4 = tree4.cbeginValueOn(); iter4; ++iter4) { + const openvdb::Coord p = iter4.getCoord(); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree0.getValue(p),tree5.getValue(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree1.getValue(p),tree5.getValue(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree4.getValue(p),tree5.getValue(p)); + } + + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree3.isValueOn(p) || tree4.isValueOn(p)); + } + } + {// test overlapping spheres + const float background=5.0f, R0=10.0f, R1=5.6f; + const openvdb::Vec3f C0(35.0f, 30.0f, 40.0f), C1(22.3f, 30.5f, 31.0f); + const openvdb::Coord dim(32, 32, 32); + openvdb::FloatGrid grid0(background); + openvdb::FloatGrid grid1(background); + unittest_util::makeSphere(dim, C0, R0, grid0, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + unittest_util::makeSphere(dim, C1, R1, grid1, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + openvdb::FloatTree& tree0 = grid0.tree(); + openvdb::FloatTree& tree1 = grid1.tree(); + openvdb::FloatTree tree0_copy(tree0); + + tree0.topologyUnion(tree1); + + const openvdb::Index64 n0 = tree0_copy.activeVoxelCount(); + const openvdb::Index64 n = tree0.activeVoxelCount(); + const openvdb::Index64 n1 = tree1.activeVoxelCount(); + + //fprintf(stderr,"Union of spheres: n=%i, n0=%i n1=%i n0+n1=%i\n",n,n0,n1, n0+n1); + + CPPUNIT_ASSERT( n > n0 ); + CPPUNIT_ASSERT( n > n1 ); + CPPUNIT_ASSERT( n < n0 + n1 ); + + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree0.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree0.getValue(p), tree0_copy.getValue(p)); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree0_copy.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree0.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(tree0.getValue(p), *iter); + } + } + + {// test union of a leaf and a tile + if (openvdb::FloatTree::DEPTH > 2) { + const int leafLevel = openvdb::FloatTree::DEPTH - 1; + const int tileLevel = leafLevel - 1; + const openvdb::Coord xyz(0); + + openvdb::FloatTree tree0; + tree0.addTile(tileLevel, xyz, /*value=*/0, /*activeState=*/true); + CPPUNIT_ASSERT(tree0.isValueOn(xyz)); + + openvdb::FloatTree tree1; + tree1.touchLeaf(xyz)->setValuesOn(); + CPPUNIT_ASSERT(tree1.isValueOn(xyz)); + + tree0.topologyUnion(tree1); + CPPUNIT_ASSERT(tree0.isValueOn(xyz)); + CPPUNIT_ASSERT_EQUAL(tree0.getValueDepth(xyz), leafLevel); + } + } + +}// testTopologyUnion + +void +TestTree::testTopologyIntersection() +{ + {//no overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + tree1.setValue(openvdb::Coord( 8, 11, 11), 2.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree1.activeVoxelCount()); + + tree1.topologyIntersection(tree0); + + CPPUNIT_ASSERT_EQUAL(tree1.activeVoxelCount(), openvdb::Index64(0)); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(tree1.empty()); + } + {//two overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + + tree1.setValue(openvdb::Coord( 8, 11, 11), 2.0f); + tree1.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree0.activeVoxelCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(2), tree1.activeVoxelCount() ); + + tree1.topologyIntersection(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + } + {//4 overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + tree0.setValue(openvdb::Coord( 400, 30, 20), 2.0f); + tree0.setValue(openvdb::Coord( 8, 11, 11), 3.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree0.leafCount() ); + + tree1.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree1.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree1.setValue(openvdb::Coord( 8, 11, 11), 6.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree1.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree1.leafCount() ); + + tree1.topologyIntersection(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(3), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(2), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(2), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(2), tree1.activeVoxelCount() ); + } + {//passive tile + const ValueType background=0.0f; + const openvdb::Index64 dim = openvdb::FloatTree::RootNodeType::ChildNodeType::DIM; + openvdb::FloatTree tree0(background), tree1(background); + tree0.fill(openvdb::CoordBBox(openvdb::Coord(0),openvdb::Coord(dim-1)),2.0f, false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree0.leafCount() ); + + tree1.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree1.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree1.setValue(openvdb::Coord( dim, 11, 11), 6.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree1.activeVoxelCount()); + + tree1.topologyIntersection(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(0), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(0), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(tree1.empty()); + } + {//active tile + const ValueType background=0.0f; + const openvdb::Index64 dim = openvdb::FloatTree::RootNodeType::ChildNodeType::DIM; + openvdb::FloatTree tree0(background), tree1(background); + tree1.fill(openvdb::CoordBBox(openvdb::Coord(0),openvdb::Coord(dim-1)),2.0f, true); + CPPUNIT_ASSERT_EQUAL(dim*dim*dim, tree1.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree1.leafCount() ); + + tree0.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree0.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree0.setValue(openvdb::Coord( dim, 11, 11), 6.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree0.leafCount() ); + + tree1.topologyIntersection(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(2), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(2), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + } + {// use tree with different voxel type + ValueType background=5.0f; + openvdb::FloatTree tree0(background), tree1(background), tree2(background); + CPPUNIT_ASSERT(tree2.empty()); + // tree0 = tree1.topologyIntersection(tree2) + tree0.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree0.setValue(openvdb::Coord(-5, 10,-20),0.1f); + tree0.setValue(openvdb::Coord( 5,-10,-20),0.2f); + tree0.setValue(openvdb::Coord(-5,-10,-20),0.3f); + + tree1.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree1.setValue(openvdb::Coord(-5, 10,-20),0.1f); + tree1.setValue(openvdb::Coord( 5,-10,-20),0.2f); + tree1.setValue(openvdb::Coord(-5,-10,-20),0.3f); + + tree2.setValue(openvdb::Coord( 5, 10, 20),0.4f); + tree2.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree2.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree2.setValue(openvdb::Coord(-5,-10,-20),0.7f); + + tree2.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + + openvdb::FloatTree tree1_copy(tree1); + + // tree3 has the same topology as tree2 but a different value type + const openvdb::Vec3f background2(1.0f,3.4f,6.0f), vec_val(3.1f,5.3f,-9.5f); + openvdb::Vec3fTree tree3(background2); + for (openvdb::FloatTree::ValueOnCIter iter = tree2.cbeginValueOn(); iter; ++iter) { + tree3.setValue(iter.getCoord(), vec_val); + } + + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(4), tree0.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(4), tree1.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree2.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree3.leafCount()); + + + //tree1.topologyInterection(tree2);//should make tree1 = tree0 + tree1.topologyIntersection(tree3);//should make tree1 = tree0 + + CPPUNIT_ASSERT(tree0.leafCount()==tree1.leafCount()); + CPPUNIT_ASSERT(tree0.nonLeafCount()==tree1.nonLeafCount()); + CPPUNIT_ASSERT(tree0.activeLeafVoxelCount()==tree1.activeLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveLeafVoxelCount()==tree1.inactiveLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.activeVoxelCount()==tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveVoxelCount()==tree1.inactiveVoxelCount()); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree0)); + CPPUNIT_ASSERT(tree0.hasSameTopology(tree1)); + + for (openvdb::FloatTree::ValueOnCIter iter = tree0.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree1.isValueOn(p)); + CPPUNIT_ASSERT(tree2.isValueOn(p)); + CPPUNIT_ASSERT(tree3.isValueOn(p)); + CPPUNIT_ASSERT(tree1_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree1.getValue(p)); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1_copy.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(tree1.isValueOn(iter.getCoord())); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree1.getValue(iter.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree0.isValueOn(p)); + CPPUNIT_ASSERT(tree2.isValueOn(p)); + CPPUNIT_ASSERT(tree3.isValueOn(p)); + CPPUNIT_ASSERT(tree1_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree0.getValue(p)); + } + } + + {// test overlapping spheres + const float background=5.0f, R0=10.0f, R1=5.6f; + const openvdb::Vec3f C0(35.0f, 30.0f, 40.0f), C1(22.3f, 30.5f, 31.0f); + const openvdb::Coord dim(32, 32, 32); + openvdb::FloatGrid grid0(background); + openvdb::FloatGrid grid1(background); + unittest_util::makeSphere(dim, C0, R0, grid0, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + unittest_util::makeSphere(dim, C1, R1, grid1, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + openvdb::FloatTree& tree0 = grid0.tree(); + openvdb::FloatTree& tree1 = grid1.tree(); + openvdb::FloatTree tree0_copy(tree0); + + tree0.topologyIntersection(tree1); + + const openvdb::Index64 n0 = tree0_copy.activeVoxelCount(); + const openvdb::Index64 n = tree0.activeVoxelCount(); + const openvdb::Index64 n1 = tree1.activeVoxelCount(); + + //fprintf(stderr,"Intersection of spheres: n=%i, n0=%i n1=%i n0+n1=%i\n",n,n0,n1, n0+n1); + + CPPUNIT_ASSERT( n < n0 ); + CPPUNIT_ASSERT( n < n1 ); + + for (openvdb::FloatTree::ValueOnCIter iter = tree0.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree1.isValueOn(p)); + CPPUNIT_ASSERT(tree0_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter, tree0_copy.getValue(p)); + } + } + + {// Test based on boolean grids + openvdb::CoordBBox bigRegion(openvdb::Coord(-9), openvdb::Coord(10)); + openvdb::CoordBBox smallRegion(openvdb::Coord( 1), openvdb::Coord(10)); + + openvdb::BoolGrid::Ptr gridBig = openvdb::BoolGrid::create(false); + gridBig->fill(bigRegion, true/*value*/, true /*make active*/); + CPPUNIT_ASSERT_EQUAL(8, int(gridBig->tree().activeTileCount())); + CPPUNIT_ASSERT_EQUAL((20 * 20 * 20), int(gridBig->activeVoxelCount())); + + openvdb::BoolGrid::Ptr gridSmall = openvdb::BoolGrid::create(false); + gridSmall->fill(smallRegion, true/*value*/, true /*make active*/); + CPPUNIT_ASSERT_EQUAL(0, int(gridSmall->tree().activeTileCount())); + CPPUNIT_ASSERT_EQUAL((10 * 10 * 10), int(gridSmall->activeVoxelCount())); + + // change the topology of gridBig by intersecting with gridSmall + gridBig->topologyIntersection(*gridSmall); + + // Should be unchanged + CPPUNIT_ASSERT_EQUAL(0, int(gridSmall->tree().activeTileCount())); + CPPUNIT_ASSERT_EQUAL((10 * 10 * 10), int(gridSmall->activeVoxelCount())); + + // In this case the interesection should be exactly "small" + CPPUNIT_ASSERT_EQUAL(0, int(gridBig->tree().activeTileCount())); + CPPUNIT_ASSERT_EQUAL((10 * 10 * 10), int(gridBig->activeVoxelCount())); + + } + +}// testTopologyIntersection + +void +TestTree::testTopologyDifference() +{ + {//no overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + tree1.setValue(openvdb::Coord( 8, 11, 11), 2.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree1.activeVoxelCount()); + + tree1.topologyDifference(tree0); + + CPPUNIT_ASSERT_EQUAL(tree1.activeVoxelCount(), openvdb::Index64(1)); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + } + {//two overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + + tree1.setValue(openvdb::Coord( 8, 11, 11), 2.0f); + tree1.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree0.activeVoxelCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(2), tree1.activeVoxelCount() ); + + CPPUNIT_ASSERT( tree0.isValueOn(openvdb::Coord( 500, 300, 200))); + CPPUNIT_ASSERT( tree1.isValueOn(openvdb::Coord( 500, 300, 200))); + CPPUNIT_ASSERT( tree1.isValueOn(openvdb::Coord( 8, 11, 11))); + + tree1.topologyDifference(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT( tree0.isValueOn(openvdb::Coord( 500, 300, 200))); + CPPUNIT_ASSERT(!tree1.isValueOn(openvdb::Coord( 500, 300, 200))); + CPPUNIT_ASSERT( tree1.isValueOn(openvdb::Coord( 8, 11, 11))); + + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + } + {//4 overlapping voxels + const ValueType background=0.0f; + openvdb::FloatTree tree0(background), tree1(background); + tree0.setValue(openvdb::Coord( 500, 300, 200), 1.0f); + tree0.setValue(openvdb::Coord( 400, 30, 20), 2.0f); + tree0.setValue(openvdb::Coord( 8, 11, 11), 3.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree0.leafCount() ); + + tree1.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree1.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree1.setValue(openvdb::Coord( 8, 11, 11), 6.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree1.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree1.leafCount() ); + + tree1.topologyDifference(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(3), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT(!tree1.empty()); + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(1), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree1.activeVoxelCount() ); + } + {//passive tile + const ValueType background=0.0f; + const openvdb::Index64 dim = openvdb::FloatTree::RootNodeType::ChildNodeType::DIM; + openvdb::FloatTree tree0(background), tree1(background); + tree0.fill(openvdb::CoordBBox(openvdb::Coord(0),openvdb::Coord(dim-1)),2.0f, false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), tree0.activeVoxelCount()); + CPPUNIT_ASSERT(!tree0.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), tree0.root().onTileCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree0.leafCount() ); + + tree1.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree1.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree1.setValue(openvdb::Coord( dim, 11, 11), 6.0f); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree1.activeVoxelCount()); + CPPUNIT_ASSERT(!tree1.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree1.leafCount() ); + + tree1.topologyDifference(tree0); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(3), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(3), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(3), tree1.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(3), tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + } + {//active tile + const ValueType background=0.0f; + const openvdb::Index64 dim = openvdb::FloatTree::RootNodeType::ChildNodeType::DIM; + openvdb::FloatTree tree0(background), tree1(background); + tree1.fill(openvdb::CoordBBox(openvdb::Coord(0),openvdb::Coord(dim-1)),2.0f, true); + CPPUNIT_ASSERT_EQUAL(dim*dim*dim, tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree1.root().onTileCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree0.leafCount() ); + + tree0.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree0.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree0.setValue(openvdb::Coord( int(dim), 11, 11), 6.0f); + CPPUNIT_ASSERT(!tree0.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree0.leafCount() ); + CPPUNIT_ASSERT( tree0.isValueOn(openvdb::Coord( int(dim), 11, 11))); + CPPUNIT_ASSERT(!tree1.isValueOn(openvdb::Coord( int(dim), 11, 11))); + + tree1.topologyDifference(tree0); + + CPPUNIT_ASSERT(tree1.root().onTileCount() > 1); + CPPUNIT_ASSERT_EQUAL( dim*dim*dim - 2, tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + openvdb::tools::pruneInactive(tree1); + CPPUNIT_ASSERT_EQUAL( dim*dim*dim - 2, tree1.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + } + {//active tile + const ValueType background=0.0f; + const openvdb::Index64 dim = openvdb::FloatTree::RootNodeType::ChildNodeType::DIM; + openvdb::FloatTree tree0(background), tree1(background); + tree1.fill(openvdb::CoordBBox(openvdb::Coord(0),openvdb::Coord(dim-1)),2.0f, true); + CPPUNIT_ASSERT_EQUAL(dim*dim*dim, tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree1.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(1), tree1.root().onTileCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree0.leafCount() ); + + tree0.setValue(openvdb::Coord( 500, 301, 200), 4.0f); + tree0.setValue(openvdb::Coord( 400, 30, 20), 5.0f); + tree0.setValue(openvdb::Coord( dim, 11, 11), 6.0f); + CPPUNIT_ASSERT(!tree0.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(3), tree0.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree0.leafCount() ); + + tree0.topologyDifference(tree1); + + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(1), tree0.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree0.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree0.empty()); + openvdb::tools::pruneInactive(tree0); + CPPUNIT_ASSERT_EQUAL( openvdb::Index32(1), tree0.leafCount() ); + CPPUNIT_ASSERT_EQUAL( openvdb::Index64(1), tree0.activeVoxelCount() ); + CPPUNIT_ASSERT(!tree1.empty()); + } + {// use tree with different voxel type + ValueType background=5.0f; + openvdb::FloatTree tree0(background), tree1(background), tree2(background); + CPPUNIT_ASSERT(tree2.empty()); + // tree0 = tree1.topologyIntersection(tree2) + tree0.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree0.setValue(openvdb::Coord(-5, 10,-20),0.1f); + tree0.setValue(openvdb::Coord( 5,-10,-20),0.2f); + tree0.setValue(openvdb::Coord(-5,-10,-20),0.3f); + + tree1.setValue(openvdb::Coord( 5, 10, 20),0.0f); + tree1.setValue(openvdb::Coord(-5, 10,-20),0.1f); + tree1.setValue(openvdb::Coord( 5,-10,-20),0.2f); + tree1.setValue(openvdb::Coord(-5,-10,-20),0.3f); + + tree2.setValue(openvdb::Coord( 5, 10, 20),0.4f); + tree2.setValue(openvdb::Coord(-5, 10,-20),0.5f); + tree2.setValue(openvdb::Coord( 5,-10,-20),0.6f); + tree2.setValue(openvdb::Coord(-5,-10,-20),0.7f); + + tree2.setValue(openvdb::Coord(-5000, 2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord( 5000,-2000,-3000),4.5678f); + tree2.setValue(openvdb::Coord(-5000,-2000, 3000),4.5678f); + + openvdb::FloatTree tree1_copy(tree1); + + // tree3 has the same topology as tree2 but a different value type + const openvdb::Vec3f background2(1.0f,3.4f,6.0f), vec_val(3.1f,5.3f,-9.5f); + openvdb::Vec3fTree tree3(background2); + for (openvdb::FloatTree::ValueOnCIter iter = tree2.cbeginValueOn(); iter; ++iter) { + tree3.setValue(iter.getCoord(), vec_val); + } + + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(4), tree0.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(4), tree1.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree2.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree3.leafCount()); + + + //tree1.topologyInterection(tree2);//should make tree1 = tree0 + tree1.topologyIntersection(tree3);//should make tree1 = tree0 + + CPPUNIT_ASSERT(tree0.leafCount()==tree1.leafCount()); + CPPUNIT_ASSERT(tree0.nonLeafCount()==tree1.nonLeafCount()); + CPPUNIT_ASSERT(tree0.activeLeafVoxelCount()==tree1.activeLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveLeafVoxelCount()==tree1.inactiveLeafVoxelCount()); + CPPUNIT_ASSERT(tree0.activeVoxelCount()==tree1.activeVoxelCount()); + CPPUNIT_ASSERT(tree0.inactiveVoxelCount()==tree1.inactiveVoxelCount()); + CPPUNIT_ASSERT(tree1.hasSameTopology(tree0)); + CPPUNIT_ASSERT(tree0.hasSameTopology(tree1)); + + for (openvdb::FloatTree::ValueOnCIter iter = tree0.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree1.isValueOn(p)); + CPPUNIT_ASSERT(tree2.isValueOn(p)); + CPPUNIT_ASSERT(tree3.isValueOn(p)); + CPPUNIT_ASSERT(tree1_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree1.getValue(p)); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1_copy.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT(tree1.isValueOn(iter.getCoord())); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree1.getValue(iter.getCoord())); + } + for (openvdb::FloatTree::ValueOnCIter iter = tree1.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree0.isValueOn(p)); + CPPUNIT_ASSERT(tree2.isValueOn(p)); + CPPUNIT_ASSERT(tree3.isValueOn(p)); + CPPUNIT_ASSERT(tree1_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter,tree0.getValue(p)); + } + } + {// test overlapping spheres + const float background=5.0f, R0=10.0f, R1=5.6f; + const openvdb::Vec3f C0(35.0f, 30.0f, 40.0f), C1(22.3f, 30.5f, 31.0f); + const openvdb::Coord dim(32, 32, 32); + openvdb::FloatGrid grid0(background); + openvdb::FloatGrid grid1(background); + unittest_util::makeSphere(dim, C0, R0, grid0, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + unittest_util::makeSphere(dim, C1, R1, grid1, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + openvdb::FloatTree& tree0 = grid0.tree(); + openvdb::FloatTree& tree1 = grid1.tree(); + openvdb::FloatTree tree0_copy(tree0); + + tree0.topologyDifference(tree1); + + const openvdb::Index64 n0 = tree0_copy.activeVoxelCount(); + const openvdb::Index64 n = tree0.activeVoxelCount(); + + CPPUNIT_ASSERT( n < n0 ); + + for (openvdb::FloatTree::ValueOnCIter iter = tree0.cbeginValueOn(); iter; ++iter) { + const openvdb::Coord p = iter.getCoord(); + CPPUNIT_ASSERT(tree1.isValueOff(p)); + CPPUNIT_ASSERT(tree0_copy.isValueOn(p)); + ASSERT_DOUBLES_EXACTLY_EQUAL(*iter, tree0_copy.getValue(p)); + } + } +} // testTopologyDifference + + +//////////////////////////////////////// + + +void +TestTree::testFill() +{ + // Use a custom tree configuration to ensure we flood-fill at all levels! + using LeafT = openvdb::tree::LeafNode;//4^3 + using InternalT = openvdb::tree::InternalNode;//4^3 + using RootT = openvdb::tree::RootNode;// child nodes are 16^3 + using TreeT = openvdb::tree::Tree; + + const float outside = 2.0f, inside = -outside; + const openvdb::CoordBBox + bbox{openvdb::Coord{-3, -50, 30}, openvdb::Coord{13, 11, 323}}, + otherBBox{openvdb::Coord{400, 401, 402}, openvdb::Coord{600}}; + + {// sparse fill + openvdb::Grid::Ptr grid = openvdb::Grid::create(outside); + TreeT& tree = grid->tree(); + CPPUNIT_ASSERT(!tree.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), tree.activeVoxelCount()); + for (openvdb::CoordBBox::Iterator ijk(bbox); ijk; ++ijk) { + ASSERT_DOUBLES_EXACTLY_EQUAL(outside, tree.getValue(*ijk)); + } + tree.sparseFill(bbox, inside, /*active=*/true); + CPPUNIT_ASSERT(tree.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(bbox.volume()), tree.activeVoxelCount()); + for (openvdb::CoordBBox::Iterator ijk(bbox); ijk; ++ijk) { + ASSERT_DOUBLES_EXACTLY_EQUAL(inside, tree.getValue(*ijk)); + } + } + {// dense fill + openvdb::Grid::Ptr grid = openvdb::Grid::create(outside); + TreeT& tree = grid->tree(); + CPPUNIT_ASSERT(!tree.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(0), tree.activeVoxelCount()); + for (openvdb::CoordBBox::Iterator ijk(bbox); ijk; ++ijk) { + ASSERT_DOUBLES_EXACTLY_EQUAL(outside, tree.getValue(*ijk)); + } + + // Add some active tiles. + tree.sparseFill(otherBBox, inside, /*active=*/true); + CPPUNIT_ASSERT(tree.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(otherBBox.volume(), tree.activeVoxelCount()); + + tree.denseFill(bbox, inside, /*active=*/true); + + // In OpenVDB 4.0.0 and earlier, denseFill() densified active tiles + // throughout the tree. Verify that it no longer does that. + CPPUNIT_ASSERT(tree.hasActiveTiles()); // i.e., otherBBox + + CPPUNIT_ASSERT_EQUAL(bbox.volume() + otherBBox.volume(), tree.activeVoxelCount()); + for (openvdb::CoordBBox::Iterator ijk(bbox); ijk; ++ijk) { + ASSERT_DOUBLES_EXACTLY_EQUAL(inside, tree.getValue(*ijk)); + } + + tree.clear(); + CPPUNIT_ASSERT(!tree.hasActiveTiles()); + tree.sparseFill(otherBBox, inside, /*active=*/true); + CPPUNIT_ASSERT(tree.hasActiveTiles()); + tree.denseFill(bbox, inside, /*active=*/false); + CPPUNIT_ASSERT(tree.hasActiveTiles()); // i.e., otherBBox + CPPUNIT_ASSERT_EQUAL(otherBBox.volume(), tree.activeVoxelCount()); + + // In OpenVDB 4.0.0 and earlier, denseFill() filled sparsely if given + // an inactive fill value. Verify that it now fills densely. + const int leafDepth = int(tree.treeDepth()) - 1; + for (openvdb::CoordBBox::Iterator ijk(bbox); ijk; ++ijk) { + CPPUNIT_ASSERT_EQUAL(leafDepth, tree.getValueDepth(*ijk)); + ASSERT_DOUBLES_EXACTLY_EQUAL(inside, tree.getValue(*ijk)); + } + } + +}// testFill + +void +TestTree::testSignedFloodFill() +{ + // Use a custom tree configuration to ensure we flood-fill at all levels! + using LeafT = openvdb::tree::LeafNode;//4^3 + using InternalT = openvdb::tree::InternalNode;//4^3 + using RootT = openvdb::tree::RootNode;// child nodes are 16^3 + using TreeT = openvdb::tree::Tree; + + const float outside = 2.0f, inside = -outside, radius = 20.0f; + + {//first test flood filling of a leaf node + + const LeafT::ValueType fill0=5, fill1=-fill0; + openvdb::tools::SignedFloodFillOp sff(fill0, fill1); + + int D = LeafT::dim(), C=D/2; + openvdb::Coord origin(0,0,0), left(0,0,C-1), right(0,0,C); + LeafT leaf(origin,fill0); + for (int i=0; i::Ptr grid = openvdb::Grid::create(outside); + TreeT& tree = grid->tree(); + const RootT& root = tree.root(); + const openvdb::Coord dim(3*16, 3*16, 3*16); + const openvdb::Coord C(16+8,16+8,16+8); + + CPPUNIT_ASSERT(!tree.isValueOn(C)); + CPPUNIT_ASSERT(root.getTableSize()==0); + + //make narrow band of sphere without setting sign for the background values! + openvdb::Grid::Accessor acc = grid->getAccessor(); + const openvdb::Vec3f center(static_cast(C[0]), + static_cast(C[1]), + static_cast(C[2])); + openvdb::Coord xyz; + for (xyz[0]=0; xyz[0]transform().indexToWorld(xyz); + const float dist = float((p-center).length() - radius); + if (fabs(dist) > outside) continue; + acc.setValue(xyz, dist); + } + } + } + // Check narrow band with incorrect background + const size_t size_before = root.getTableSize(); + CPPUNIT_ASSERT(size_before>0); + CPPUNIT_ASSERT(!tree.isValueOn(C)); + ASSERT_DOUBLES_EXACTLY_EQUAL(outside,tree.getValue(C)); + for (xyz[0]=0; xyz[0]transform().indexToWorld(xyz); + const float dist = float((p-center).length() - radius); + const float val = acc.getValue(xyz); + if (dist < inside) { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, outside); + } else if (dist>outside) { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, outside); + } else { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, dist ); + } + } + } + } + + CPPUNIT_ASSERT(tree.getValueDepth(C) == -1);//i.e. background value + openvdb::tools::signedFloodFill(tree); + CPPUNIT_ASSERT(tree.getValueDepth(C) == 0);//added inside tile to root + + // Check narrow band with correct background + for (xyz[0]=0; xyz[0]transform().indexToWorld(xyz); + const float dist = float((p-center).length() - radius); + const float val = acc.getValue(xyz); + if (dist < inside) { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, inside); + } else if (dist>outside) { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, outside); + } else { + ASSERT_DOUBLES_EXACTLY_EQUAL( val, dist ); + } + } + } + } + + CPPUNIT_ASSERT(root.getTableSize()>size_before);//added inside root tiles + CPPUNIT_ASSERT(!tree.isValueOn(C)); + ASSERT_DOUBLES_EXACTLY_EQUAL(inside,tree.getValue(C)); +} + + +void +TestTree::testPruneInactive() +{ + using openvdb::Coord; + using openvdb::Index32; + using openvdb::Index64; + + const float background = 5.0; + + openvdb::FloatTree tree(background); + + // Verify that the newly-constructed tree is empty and that pruning it has no effect. + CPPUNIT_ASSERT(tree.empty()); + openvdb::tools::prune(tree); + CPPUNIT_ASSERT(tree.empty()); + openvdb::tools::pruneInactive(tree); + CPPUNIT_ASSERT(tree.empty()); + + // Set some active values. + tree.setValue(Coord(-5, 10, 20), 0.1f); + tree.setValue(Coord(-5,-10, 20), 0.4f); + tree.setValue(Coord(-5, 10,-20), 0.5f); + tree.setValue(Coord(-5,-10,-20), 0.7f); + tree.setValue(Coord( 5, 10, 20), 0.0f); + tree.setValue(Coord( 5,-10, 20), 0.2f); + tree.setValue(Coord( 5,-10,-20), 0.6f); + tree.setValue(Coord( 5, 10,-20), 0.3f); + // Verify that the tree has the expected numbers of active voxels and leaf nodes. + CPPUNIT_ASSERT_EQUAL(Index64(8), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(8), tree.leafCount()); + + // Verify that prune() has no effect, since the values are all different. + openvdb::tools::prune(tree); + CPPUNIT_ASSERT_EQUAL(Index64(8), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(8), tree.leafCount()); + // Verify that pruneInactive() has no effect, since the values are active. + openvdb::tools::pruneInactive(tree); + CPPUNIT_ASSERT_EQUAL(Index64(8), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(8), tree.leafCount()); + + // Make some of the active values inactive, without changing their values. + tree.setValueOff(Coord(-5, 10, 20)); + tree.setValueOff(Coord(-5,-10, 20)); + tree.setValueOff(Coord(-5, 10,-20)); + tree.setValueOff(Coord(-5,-10,-20)); + CPPUNIT_ASSERT_EQUAL(Index64(4), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(8), tree.leafCount()); + // Verify that prune() has no effect, since the values are still different. + openvdb::tools::prune(tree); + CPPUNIT_ASSERT_EQUAL(Index64(4), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(8), tree.leafCount()); + // Verify that pruneInactive() prunes the nodes containing only inactive voxels. + openvdb::tools::pruneInactive(tree); + CPPUNIT_ASSERT_EQUAL(Index64(4), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(4), tree.leafCount()); + + // Make all of the active values inactive, without changing their values. + tree.setValueOff(Coord( 5, 10, 20)); + tree.setValueOff(Coord( 5,-10, 20)); + tree.setValueOff(Coord( 5,-10,-20)); + tree.setValueOff(Coord( 5, 10,-20)); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(4), tree.leafCount()); + // Verify that prune() has no effect, since the values are still different. + openvdb::tools::prune(tree); + CPPUNIT_ASSERT_EQUAL(Index64(0), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Index32(4), tree.leafCount()); + // Verify that pruneInactive() prunes all of the remaining leaf nodes. + openvdb::tools::pruneInactive(tree); + CPPUNIT_ASSERT(tree.empty()); +} + +void +TestTree::testPruneLevelSet() +{ + const float background=10.0f, R=5.6f; + const openvdb::Vec3f C(12.3f, 15.5f, 10.0f); + const openvdb::Coord dim(32, 32, 32); + + openvdb::FloatGrid grid(background); + unittest_util::makeSphere(dim, C, R, grid, + 1.0f, unittest_util::SPHERE_SPARSE_NARROW_BAND); + openvdb::FloatTree& tree = grid.tree(); + + openvdb::Index64 count = 0; + openvdb::Coord xyz; + for (xyz[0]=0; xyz[0]beginValueOn(); vIter; ++vIter) { + if (fabs(*vIter)setValueOff(vIter.pos(), *vIter > 0.0f ? background : -background); + ++removed; + } + } + // The following version is slower since it employs + // FloatTree::ValueOnIter that visits both tiles and voxels and + // also uses random acceess to set the voxels off. + /* + for (openvdb::FloatTree::ValueOnIter i = tree.beginValueOn(); i; ++i) { + if (fabs(*i) 0.0f ? background : -background); + ++removed2; + } + */ + + CPPUNIT_ASSERT_EQUAL(leafCount, tree.leafCount()); + //std::cerr << "Leaf count=" << tree.leafCount() << std::endl; + CPPUNIT_ASSERT_EQUAL(tree.activeVoxelCount(), count-removed); + CPPUNIT_ASSERT_EQUAL(tree.activeLeafVoxelCount(), count-removed); + + openvdb::tools::pruneLevelSet(tree); + + CPPUNIT_ASSERT(tree.leafCount() < leafCount); + //std::cerr << "Leaf count=" << tree.leafCount() << std::endl; + CPPUNIT_ASSERT_EQUAL(tree.activeVoxelCount(), count-removed); + CPPUNIT_ASSERT_EQUAL(tree.activeLeafVoxelCount(), count-removed); + + openvdb::FloatTree::ValueOnCIter i = tree.cbeginValueOn(); + for (; i; ++i) CPPUNIT_ASSERT( *i < new_width); + + for (xyz[0]=0; xyz[0]getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + CPPUNIT_ASSERT(tree->touchLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(!tree->isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree->getValue(xyz)); + } + {// test accessor + openvdb::FloatTree::Ptr tree(new openvdb::FloatTree(background)); + openvdb::tree::ValueAccessor acc(*tree); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + CPPUNIT_ASSERT(acc.touchLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(!acc.isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, acc.getValue(xyz)); + } +} + + +void +TestTree::testProbeLeaf() +{ + const float background=10.0f, value = 2.0f; + const openvdb::Coord xyz(-20,30,10); + {// test Tree::probeLeaf + openvdb::FloatTree::Ptr tree(new openvdb::FloatTree(background)); + CPPUNIT_ASSERT_EQUAL(-1, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + CPPUNIT_ASSERT(tree->probeLeaf(xyz) == nullptr); + CPPUNIT_ASSERT_EQUAL(-1, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + tree->setValue(xyz, value); + CPPUNIT_ASSERT_EQUAL( 3, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(tree->probeLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, tree->getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(tree->isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree->getValue(xyz)); + } + {// test Tree::probeConstLeaf + const openvdb::FloatTree tree1(background); + CPPUNIT_ASSERT_EQUAL(-1, tree1.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree1.leafCount())); + CPPUNIT_ASSERT(tree1.probeConstLeaf(xyz) == nullptr); + CPPUNIT_ASSERT_EQUAL(-1, tree1.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree1.leafCount())); + openvdb::FloatTree tmp(tree1); + tmp.setValue(xyz, value); + const openvdb::FloatTree tree2(tmp); + CPPUNIT_ASSERT_EQUAL( 3, tree2.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree2.leafCount())); + CPPUNIT_ASSERT(tree2.probeConstLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, tree2.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree2.leafCount())); + CPPUNIT_ASSERT(tree2.isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree2.getValue(xyz)); + } + {// test ValueAccessor::probeLeaf + openvdb::FloatTree::Ptr tree(new openvdb::FloatTree(background)); + openvdb::tree::ValueAccessor acc(*tree); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + CPPUNIT_ASSERT(acc.probeLeaf(xyz) == nullptr); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree->leafCount())); + acc.setValue(xyz, value); + CPPUNIT_ASSERT_EQUAL( 3, acc.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(acc.probeLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, acc.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree->leafCount())); + CPPUNIT_ASSERT(acc.isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(xyz)); + } + {// test ValueAccessor::probeConstLeaf + const openvdb::FloatTree tree1(background); + openvdb::tree::ValueAccessor acc1(tree1); + CPPUNIT_ASSERT_EQUAL(-1, acc1.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree1.leafCount())); + CPPUNIT_ASSERT(acc1.probeConstLeaf(xyz) == nullptr); + CPPUNIT_ASSERT_EQUAL(-1, acc1.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 0, int(tree1.leafCount())); + openvdb::FloatTree tmp(tree1); + tmp.setValue(xyz, value); + const openvdb::FloatTree tree2(tmp); + openvdb::tree::ValueAccessor acc2(tree2); + CPPUNIT_ASSERT_EQUAL( 3, acc2.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree2.leafCount())); + CPPUNIT_ASSERT(acc2.probeConstLeaf(xyz) != nullptr); + CPPUNIT_ASSERT_EQUAL( 3, acc2.getValueDepth(xyz)); + CPPUNIT_ASSERT_EQUAL( 1, int(tree2.leafCount())); + CPPUNIT_ASSERT(acc2.isValueOn(xyz)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc2.getValue(xyz)); + } +} + + +void +TestTree::testAddLeaf() +{ + using namespace openvdb; + + using LeafT = FloatTree::LeafNodeType; + + const Coord ijk(100); + FloatGrid grid; + FloatTree& tree = grid.tree(); + + tree.setValue(ijk, 5.0); + const LeafT* oldLeaf = tree.probeLeaf(ijk); + CPPUNIT_ASSERT(oldLeaf != nullptr); + ASSERT_DOUBLES_EXACTLY_EQUAL(5.0, oldLeaf->getValue(ijk)); + + LeafT* newLeaf = new LeafT; + newLeaf->setOrigin(oldLeaf->origin()); + newLeaf->fill(3.0); + + tree.addLeaf(newLeaf); + CPPUNIT_ASSERT_EQUAL(newLeaf, tree.probeLeaf(ijk)); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.0, tree.getValue(ijk)); +} + + +void +TestTree::testAddTile() +{ + using namespace openvdb; + + const Coord ijk(100); + FloatGrid grid; + FloatTree& tree = grid.tree(); + + tree.setValue(ijk, 5.0); + CPPUNIT_ASSERT(tree.probeLeaf(ijk) != nullptr); + + const Index lvl = FloatTree::DEPTH >> 1; + OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN + if (lvl > 0) tree.addTile(lvl,ijk, 3.0, /*active=*/true); + else tree.addTile(1,ijk, 3.0, /*active=*/true); + OPENVDB_NO_UNREACHABLE_CODE_WARNING_END + + CPPUNIT_ASSERT(tree.probeLeaf(ijk) == nullptr); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.0, tree.getValue(ijk)); +} + + +struct BBoxOp +{ + std::vector bbox; + std::vector level; + + // This method is required by Tree::visitActiveBBox + // Since it will return false if LEVEL==0 it will never descent to + // the active voxels. In other words the smallest BBoxes + // correspond to LeafNodes or active tiles at LEVEL=1 + template + inline bool descent() { return LEVEL>0; } + + // This method is required by Tree::visitActiveBBox + template + inline void operator()(const openvdb::CoordBBox &_bbox) { + bbox.push_back(_bbox); + level.push_back(LEVEL); + } +}; + +void +TestTree::testProcessBBox() +{ + using openvdb::Coord; + using openvdb::CoordBBox; + //check two leaf nodes and two tiles at each level 1, 2 and 3 + const int size[4]={1<<3, 1<<3, 1<<(3+4), 1<<(3+4+5)}; + for (int level=0; level<=3; ++level) { + openvdb::FloatTree tree; + const int n = size[level]; + const CoordBBox bbox[]={CoordBBox::createCube(Coord(-n,-n,-n), n), + CoordBBox::createCube(Coord( 0, 0, 0), n)}; + if (level==0) { + tree.setValue(Coord(-1,-2,-3), 1.0f); + tree.setValue(Coord( 1, 2, 3), 1.0f); + } else { + tree.fill(bbox[0], 1.0f, true); + tree.fill(bbox[1], 1.0f, true); + } + BBoxOp op; + tree.visitActiveBBox(op); + CPPUNIT_ASSERT_EQUAL(2, int(op.bbox.size())); + + for (int i=0; i<2; ++i) { + //std::cerr <<"\nLevel="< and Tree::getNodes()"); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::vector + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector and Tree::getNodes()"); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() const with std::vector + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector and Tree::getNodes() const"); + const FloatTree& tmp = tree; + tmp.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::vector and std::vector::reserve + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector, std::vector::reserve and Tree::getNodes"); + array.reserve(tree.leafCount()); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::deque + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::getNodes"); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::deque + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::getNodes"); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(size_t(1), array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + } + {//testing Tree::getNodes() with std::deque + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::getNodes"); + tree.getNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(size_t(1), array.size()); + CPPUNIT_ASSERT_EQUAL(leafCount, size_t(tree.leafCount())); + } + /* + {//testing Tree::getNodes() with std::deque where T is not part of the tree configuration + using NodeT = openvdb::tree::LeafNode; + std::deque array; + tree.getNodes(array);//should NOT compile since NodeT is not part of the FloatTree configuration + } + {//testing Tree::getNodes() const with std::deque where T is not part of the tree configuration + using NodeT = openvdb::tree::LeafNode; + std::deque array; + const FloatTree& tmp = tree; + tmp.getNodes(array);//should NOT compile since NodeT is not part of the FloatTree configuration + } + */ +}// testGetNodes + +void +TestTree::testStealNodes() +{ + //openvdb::util::CpuTimer timer; + using openvdb::CoordBBox; + using openvdb::Coord; + using openvdb::Vec3f; + using openvdb::FloatGrid; + using openvdb::FloatTree; + + const Vec3f center(0.35f, 0.35f, 0.35f); + const float radius = 0.15f; + const int dim = 128, half_width = 5; + const float voxel_size = 1.0f/dim; + + FloatGrid::Ptr grid = FloatGrid::create(/*background=*/half_width*voxel_size); + const FloatTree& tree = grid->tree(); + grid->setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/voxel_size)); + + unittest_util::makeSphere( + Coord(dim), center, radius, *grid, unittest_util::SPHERE_SPARSE_NARROW_BAND); + const size_t leafCount = tree.leafCount(); + const size_t voxelCount = tree.activeVoxelCount(); + + {//testing Tree::stealNodes() with std::vector + FloatTree tree2 = tree; + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector and Tree::stealNodes()"); + tree2.stealNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::stealNodes() with std::vector + FloatTree tree2 = tree; + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector and Tree::stealNodes()"); + tree2.stealNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::stealNodes() const with std::vector + FloatTree tree2 = tree; + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector and Tree::stealNodes() const"); + tree2.stealNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::stealNodes() with std::vector and std::vector::reserve + FloatTree tree2 = tree; + std::vector array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::vector, std::vector::reserve and Tree::stealNodes"); + array.reserve(tree2.leafCount()); + tree2.stealNodes(array, 0.0f, false); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::deque + FloatTree tree2 = tree; + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::stealNodes"); + tree2.stealNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(leafCount, array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + size_t sum = 0; + for (size_t i=0; ionVoxelCount(); + CPPUNIT_ASSERT_EQUAL(voxelCount, sum); + } + {//testing Tree::getNodes() with std::deque + FloatTree tree2 = tree; + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::stealNodes"); + tree2.stealNodes(array, 0.0f, true); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(size_t(1), array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + } + {//testing Tree::getNodes() with std::deque + FloatTree tree2 = tree; + std::deque array; + CPPUNIT_ASSERT_EQUAL(size_t(0), array.size()); + //timer.start("\nstd::deque and Tree::stealNodes"); + tree2.stealNodes(array); + //timer.stop(); + CPPUNIT_ASSERT_EQUAL(size_t(1), array.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), size_t(tree2.leafCount())); + } + /* + {//testing Tree::stealNodes() with std::deque where T is not part of the tree configuration + FloatTree tree2 = tree; + using NodeT = openvdb::tree::LeafNode; + std::deque array; + //should NOT compile since NodeT is not part of the FloatTree configuration + tree2.stealNodes(array, 0.0f, true); + } + */ +}// testStealNodes + +void +TestTree::testStealNode() +{ + using openvdb::Index; + using openvdb::FloatTree; + + const float background=0.0f, value = 5.6f, epsilon=0.000001f; + const openvdb::Coord xyz(-23,42,70); + + {// stal a LeafNode + using NodeT = FloatTree::LeafNodeType; + CPPUNIT_ASSERT_EQUAL(Index(0), NodeT::getLevel()); + + FloatTree tree(background); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + + tree.setValue(xyz, value); + CPPUNIT_ASSERT_EQUAL(Index(1), tree.leafCount()); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, tree.getValue(xyz), epsilon); + + NodeT* node = tree.root().stealNode(xyz, background, false); + CPPUNIT_ASSERT(node != nullptr); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, node->getValue(xyz), epsilon); + CPPUNIT_ASSERT(node->isValueOn(xyz)); + delete node; + } + {// steal a bottom InternalNode + using NodeT = FloatTree::RootNodeType::ChildNodeType::ChildNodeType; + CPPUNIT_ASSERT_EQUAL(Index(1), NodeT::getLevel()); + + FloatTree tree(background); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + + tree.setValue(xyz, value); + CPPUNIT_ASSERT_EQUAL(Index(1), tree.leafCount()); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, tree.getValue(xyz), epsilon); + + NodeT* node = tree.root().stealNode(xyz, background, false); + CPPUNIT_ASSERT(node != nullptr); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, node->getValue(xyz), epsilon); + CPPUNIT_ASSERT(node->isValueOn(xyz)); + delete node; + } + {// steal a top InternalNode + using NodeT = FloatTree::RootNodeType::ChildNodeType; + CPPUNIT_ASSERT_EQUAL(Index(2), NodeT::getLevel()); + + FloatTree tree(background); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + + tree.setValue(xyz, value); + CPPUNIT_ASSERT_EQUAL(Index(1), tree.leafCount()); + CPPUNIT_ASSERT(tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, tree.getValue(xyz), epsilon); + + NodeT* node = tree.root().stealNode(xyz, background, false); + CPPUNIT_ASSERT(node != nullptr); + CPPUNIT_ASSERT_EQUAL(Index(0), tree.leafCount()); + CPPUNIT_ASSERT(!tree.isValueOn(xyz)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(background, tree.getValue(xyz), epsilon); + CPPUNIT_ASSERT(tree.root().stealNode(xyz, value, false) == nullptr); + CPPUNIT_ASSERT_DOUBLES_EQUAL(value, node->getValue(xyz), epsilon); + CPPUNIT_ASSERT(node->isValueOn(xyz)); + delete node; + } +} + +#if OPENVDB_ABI_VERSION_NUMBER >= 7 +void +TestTree::testNodeCount() +{ + //openvdb::util::CpuTimer timer;// use for benchmark test + + const openvdb::Vec3f center(0.0f, 0.0f, 0.0f); + const float radius = 1.0f; + //const int dim = 4096, halfWidth = 3;// use for benchmark test + const int dim = 512, halfWidth = 3;// use for unit test + //timer.start("\nGenerate level set sphere");// use for benchmark test + auto grid = openvdb::tools::createLevelSetSphere(radius, center, radius/dim, halfWidth); + //timer.stop();// use for benchmark test + auto& tree = grid->tree(); + + std::vector dims; + tree.getNodeLog2Dims(dims); + std::vector nodeCount1(dims.size()); + //timer.start("Old technique");// use for benchmark test + for (auto it = tree.cbeginNode(); it; ++it) ++(nodeCount1[dims.size()-1-it.getDepth()]); + //timer.restart("New technique");// use for benchmark test + const auto nodeCount2 = tree.nodeCount(); + //timer.stop();// use for benchmark test + CPPUNIT_ASSERT_EQUAL(nodeCount1.size(), nodeCount2.size()); + //for (size_t i=0; i children; + root.stealNodes(children); + CPPUNIT_ASSERT(root.empty()); + + // insert the root node children directly + for (ChildType* child : children) { + root.addChild(child); + } + CPPUNIT_ASSERT_EQUAL(openvdb::Index(2), root.getTableSize()); + + { // verify the coordinates of the root node children + auto rootIter = root.cbeginChildOn(); + CPPUNIT_ASSERT_EQUAL(c0, rootIter.getCoord()); + ++rootIter; + CPPUNIT_ASSERT_EQUAL(c1, rootIter.getCoord()); + } + } + + { // test inserting tiles and replacing them with child nodes + RootNodeType root(0.0f); + CPPUNIT_ASSERT(root.empty()); + + // no-op + root.addChild(nullptr); + + // populate the root node by inserting tiles + root.addTile(c0, /*value=*/1.0f, /*state=*/true); + root.addTile(c1, /*value=*/2.0f, /*state=*/true); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(2), root.getTableSize()); + CPPUNIT_ASSERT(root.hasActiveTiles()); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0f, root.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(2.0f, root.getValue(c1)); + + // insert child nodes with the same coordinates + root.addChild(new ChildType(c0, 3.0f)); + root.addChild(new ChildType(c1, 4.0f)); + + // insert a new child at c0 + root.addChild(new ChildType(c0, 5.0f)); + + // verify active tiles have been replaced by child nodes + CPPUNIT_ASSERT_EQUAL(openvdb::Index(2), root.getTableSize()); + CPPUNIT_ASSERT(!root.hasActiveTiles()); + + { // verify the coordinates of the root node children + auto rootIter = root.cbeginChildOn(); + CPPUNIT_ASSERT_EQUAL(c0, rootIter.getCoord()); + ASSERT_DOUBLES_EXACTLY_EQUAL(5.0f, root.getValue(c0)); + ++rootIter; + CPPUNIT_ASSERT_EQUAL(c1, rootIter.getCoord()); + } + } +} + +void +TestTree::testInternalNode() +{ + const openvdb::Coord c0(1000, 1000, 1000); + const openvdb::Coord c1(896, 896, 896); + + using InternalNodeType = InternalNodeType1; + using ChildType = LeafNodeType; + + { // test inserting child nodes directly and indirectly + openvdb::Coord c2 = c1.offsetBy(8,0,0); + openvdb::Coord c3 = c1.offsetBy(16,16,16); + + InternalNodeType internalNode(c1, 0.0f); + internalNode.touchLeaf(c2); + internalNode.touchLeaf(c3); + + CPPUNIT_ASSERT_EQUAL(openvdb::Index(2), internalNode.leafCount()); + CPPUNIT_ASSERT(!internalNode.hasActiveTiles()); + + { // verify c0 and c1 are the root node coordinates + auto childIter = internalNode.cbeginChildOn(); + CPPUNIT_ASSERT_EQUAL(c2, childIter.getCoord()); + ++childIter; + CPPUNIT_ASSERT_EQUAL(c3, childIter.getCoord()); + } + + // copy the internal node + InternalNodeType internalNodeCopy(internalNode); + + // steal the internal node children leaving it empty again + std::vector children; + internalNode.stealNodes(children, 0.0f, false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), internalNode.leafCount()); + + // insert the root node children directly + for (ChildType* child : children) { + internalNode.addChild(child); + } + CPPUNIT_ASSERT_EQUAL(openvdb::Index(2), internalNode.leafCount()); + + { // verify the coordinates of the root node children + auto childIter = internalNode.cbeginChildOn(); + CPPUNIT_ASSERT_EQUAL(c2, childIter.getCoord()); + ++childIter; + CPPUNIT_ASSERT_EQUAL(c3, childIter.getCoord()); + } + } + + { // test inserting a tile and replacing with a child node + InternalNodeType internalNode(c1, 0.0f); + CPPUNIT_ASSERT(!internalNode.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), internalNode.leafCount()); + + // add a tile + internalNode.addTile(openvdb::Index(0), /*value=*/1.0f, /*state=*/true); + CPPUNIT_ASSERT(internalNode.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(0), internalNode.leafCount()); + + // replace the tile with a child node + CPPUNIT_ASSERT(internalNode.addChild(new ChildType(c1, 2.0f))); + CPPUNIT_ASSERT(!internalNode.hasActiveTiles()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index(1), internalNode.leafCount()); + CPPUNIT_ASSERT_EQUAL(c1, internalNode.cbeginChildOn().getCoord()); + ASSERT_DOUBLES_EXACTLY_EQUAL(2.0f, internalNode.cbeginChildOn()->getValue(0)); + + // replace the child node with another child node + CPPUNIT_ASSERT(internalNode.addChild(new ChildType(c1, 3.0f))); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.0f, internalNode.cbeginChildOn()->getValue(0)); + } + + { // test inserting child nodes that do and do not belong to the internal node + InternalNodeType internalNode(c1, 0.0f); + + // succeed if child belongs to this internal node + CPPUNIT_ASSERT(internalNode.addChild(new ChildType(c0.offsetBy(8,0,0)))); + CPPUNIT_ASSERT(internalNode.probeLeaf(c0.offsetBy(8,0,0))); + openvdb::Index index1 = internalNode.coordToOffset(c0); + openvdb::Index index2 = internalNode.coordToOffset(c0.offsetBy(8,0,0)); + CPPUNIT_ASSERT(!internalNode.isChildMaskOn(index1)); + CPPUNIT_ASSERT(internalNode.isChildMaskOn(index2)); + + // fail otherwise + CPPUNIT_ASSERT(!internalNode.addChild(new ChildType(c0.offsetBy(8000,0,0)))); + } +} + +// Copyright (c) DreamWorks Animation LLC +// All rights reserved. This software is distributed under the +// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ ) diff --git a/openvdb/unittest/TestTreeCombine.cc b/openvdb/unittest/TestTreeCombine.cc new file mode 100644 index 00000000..5eef312c --- /dev/null +++ b/openvdb/unittest/TestTreeCombine.cc @@ -0,0 +1,1044 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include "util.h" // for unittest_util::makeSphere() +#include // for std::max() and std::min() +#include // for std::isnan() and std::isinf() +#include // for std::numeric_limits +#include +#include +#include + +#define TEST_CSG_VERBOSE 0 + +#if TEST_CSG_VERBOSE +#include +#include +#endif + +namespace { +using Float433Tree = openvdb::tree::Tree4::Type; +using Float433Grid = openvdb::Grid; +} + + +class TestTreeCombine: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); Float433Grid::registerGrid(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestTreeCombine); + CPPUNIT_TEST(testCombine); + CPPUNIT_TEST(testCombine2); + CPPUNIT_TEST(testCompMax); + CPPUNIT_TEST(testCompMin); + CPPUNIT_TEST(testCompSum); + CPPUNIT_TEST(testCompProd); + CPPUNIT_TEST(testCompDiv); + CPPUNIT_TEST(testCompDivByZero); + CPPUNIT_TEST(testCompReplace); + CPPUNIT_TEST(testBoolTree); +#ifdef DWA_OPENVDB + CPPUNIT_TEST(testCsg); +#endif + CPPUNIT_TEST(testCsgCopy); + CPPUNIT_TEST(testCompActiveLeafVoxels); + CPPUNIT_TEST_SUITE_END(); + + void testCombine(); + void testCombine2(); + void testCompMax(); + void testCompMin(); + void testCompSum(); + void testCompProd(); + void testCompDiv(); + void testCompDivByZero(); + void testCompReplace(); + void testBoolTree(); + void testCsg(); + void testCsgCopy(); + void testCompActiveLeafVoxels(); + +private: + template + void testComp(const TreeComp&, const ValueComp&); + + template + void testCompRepl(); + + template + typename TreeT::Ptr + visitCsg(const TreeT& a, const TreeT& b, const TreeT& ref, const VisitorT&); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTreeCombine); + + +//////////////////////////////////////// + + +namespace { +namespace Local { + +template +struct OrderDependentCombineOp { + OrderDependentCombineOp() {} + void operator()(const ValueT& a, const ValueT& b, ValueT& result) const { + result = a + ValueT(100) * b; // result is order-dependent on A and B + } +}; + +/// Test Tree::combine(), which takes a functor that accepts three arguments +/// (the a, b and result values). +template +void combine(TreeT& a, TreeT& b) +{ + a.combine(b, OrderDependentCombineOp()); +} + +/// Test Tree::combineExtended(), which takes a functor that accepts a single +/// CombineArgs argument, in which the functor can return a computed active state +/// for the output value. +template +void extendedCombine(TreeT& a, TreeT& b) +{ + using ValueT = typename TreeT::ValueType; + struct ArgsOp { + static void order(openvdb::CombineArgs& args) { + // The result is order-dependent on A and B. + args.setResult(args.a() + ValueT(100) * args.b()); + args.setResultIsActive(args.aIsActive() || args.bIsActive()); + } + }; + a.combineExtended(b, ArgsOp::order); +} + +template void compMax(TreeT& a, TreeT& b) { openvdb::tools::compMax(a, b); } +template void compMin(TreeT& a, TreeT& b) { openvdb::tools::compMin(a, b); } +template void compSum(TreeT& a, TreeT& b) { openvdb::tools::compSum(a, b); } +template void compMul(TreeT& a, TreeT& b) { openvdb::tools::compMul(a, b); }\ +template void compDiv(TreeT& a, TreeT& b) { openvdb::tools::compDiv(a, b); }\ + +inline float orderf(float a, float b) { return a + 100.0f * b; } +inline float maxf(float a, float b) { return std::max(a, b); } +inline float minf(float a, float b) { return std::min(a, b); } +inline float sumf(float a, float b) { return a + b; } +inline float mulf(float a, float b) { return a * b; } +inline float divf(float a, float b) { return a / b; } + +inline openvdb::Vec3f orderv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { return a+100.0f*b; } +inline openvdb::Vec3f maxv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { + const float aMag = a.lengthSqr(), bMag = b.lengthSqr(); + return (aMag > bMag ? a : (bMag > aMag ? b : std::max(a, b))); +} +inline openvdb::Vec3f minv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { + const float aMag = a.lengthSqr(), bMag = b.lengthSqr(); + return (aMag < bMag ? a : (bMag < aMag ? b : std::min(a, b))); +} +inline openvdb::Vec3f sumv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { return a + b; } +inline openvdb::Vec3f mulv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { return a * b; } +inline openvdb::Vec3f divv(const openvdb::Vec3f& a, const openvdb::Vec3f& b) { return a / b; } + +} // namespace Local +} // unnamed namespace + + +void +TestTreeCombine::testCombine() +{ + testComp(Local::combine, Local::orderf); + testComp(Local::combine, Local::orderv); + + testComp(Local::extendedCombine, Local::orderf); + testComp(Local::extendedCombine, Local::orderv); +} + + +void +TestTreeCombine::testCompMax() +{ + testComp(Local::compMax, Local::maxf); + testComp(Local::compMax, Local::maxv); +} + + +void +TestTreeCombine::testCompMin() +{ + testComp(Local::compMin, Local::minf); + testComp(Local::compMin, Local::minv); +} + + +void +TestTreeCombine::testCompSum() +{ + testComp(Local::compSum, Local::sumf); + testComp(Local::compSum, Local::sumv); +} + + +void +TestTreeCombine::testCompProd() +{ + testComp(Local::compMul, Local::mulf); + testComp(Local::compMul, Local::mulv); +} + + +void +TestTreeCombine::testCompDiv() +{ + testComp(Local::compDiv, Local::divf); + testComp(Local::compDiv, Local::divv); +} + + +void +TestTreeCombine::testCompDivByZero() +{ + const openvdb::Coord c0(0), c1(1), c2(2), c3(3), c4(4); + + // Verify that integer-valued grids behave well w.r.t. division by zero. + { + const openvdb::Int32 inf = std::numeric_limits::max(); + + openvdb::Int32Tree a(/*background=*/1), b(0); + + a.setValueOn(c0); + a.setValueOn(c1); + a.setValueOn(c2, -1); + a.setValueOn(c3, -1); + a.setValueOn(c4, 0); + b.setValueOn(c1); + b.setValueOn(c3); + + openvdb::tools::compDiv(a, b); + + CPPUNIT_ASSERT_EQUAL( inf, a.getValue(c0)); // 1 / 0 + CPPUNIT_ASSERT_EQUAL( inf, a.getValue(c1)); // 1 / 0 + CPPUNIT_ASSERT_EQUAL(-inf, a.getValue(c2)); // -1 / 0 + CPPUNIT_ASSERT_EQUAL(-inf, a.getValue(c3)); // -1 / 0 + CPPUNIT_ASSERT_EQUAL( 0, a.getValue(c4)); // 0 / 0 + } + { + const openvdb::Index32 zero(0), inf = std::numeric_limits::max(); + + openvdb::UInt32Tree a(/*background=*/1), b(0); + + a.setValueOn(c0); + a.setValueOn(c1); + a.setValueOn(c2, zero); + b.setValueOn(c1); + + openvdb::tools::compDiv(a, b); + + CPPUNIT_ASSERT_EQUAL( inf, a.getValue(c0)); // 1 / 0 + CPPUNIT_ASSERT_EQUAL( inf, a.getValue(c1)); // 1 / 0 + CPPUNIT_ASSERT_EQUAL(zero, a.getValue(c2)); // 0 / 0 + } + + // Verify that non-integer-valued grids don't use integer division semantics. + { + openvdb::FloatTree a(/*background=*/1.0), b(0.0); + + a.setValueOn(c0); + a.setValueOn(c1); + a.setValueOn(c2, -1.0); + a.setValueOn(c3, -1.0); + a.setValueOn(c4, 0.0); + b.setValueOn(c1); + b.setValueOn(c3); + + openvdb::tools::compDiv(a, b); + + CPPUNIT_ASSERT(std::isinf(a.getValue(c0))); // 1 / 0 + CPPUNIT_ASSERT(std::isinf(a.getValue(c1))); // 1 / 0 + CPPUNIT_ASSERT(std::isinf(a.getValue(c2))); // -1 / 0 + CPPUNIT_ASSERT(std::isinf(a.getValue(c3))); // -1 / 0 + CPPUNIT_ASSERT(std::isnan(a.getValue(c4))); // 0 / 0 + } +} + + +void +TestTreeCombine::testCompReplace() +{ + testCompRepl(); + testCompRepl(); +} + + +template +void +TestTreeCombine::testComp(const TreeComp& comp, const ValueComp& op) +{ + using ValueT = typename TreeT::ValueType; + + const ValueT + zero = openvdb::zeroVal(), + minusOne = zero + (-1), + minusTwo = zero + (-2), + one = zero + 1, + three = zero + 3, + four = zero + 4, + five = zero + 5; + + { + TreeT aTree(/*background=*/one); + aTree.setValueOn(openvdb::Coord(0, 0, 0), three); + aTree.setValueOn(openvdb::Coord(0, 0, 1), three); + aTree.setValueOn(openvdb::Coord(0, 0, 2), aTree.background()); + aTree.setValueOn(openvdb::Coord(0, 1, 2), aTree.background()); + aTree.setValueOff(openvdb::Coord(1, 0, 0), three); + aTree.setValueOff(openvdb::Coord(1, 0, 1), three); + + TreeT bTree(five); + bTree.setValueOn(openvdb::Coord(0, 0, 0), minusOne); + bTree.setValueOn(openvdb::Coord(0, 1, 0), four); + bTree.setValueOn(openvdb::Coord(0, 1, 2), minusTwo); + bTree.setValueOff(openvdb::Coord(1, 0, 0), minusOne); + bTree.setValueOff(openvdb::Coord(1, 1, 0), four); + + // Call aTree.compMax(bTree), aTree.compSum(bTree), etc. + comp(aTree, bTree); + + // a = 3 (On), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(op(three, minusOne), aTree.getValue(openvdb::Coord(0, 0, 0))); + + // a = 3 (On), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(three, five), aTree.getValue(openvdb::Coord(0, 0, 1))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 0, 1))); + + // a = 1 (On, = bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(one, five), aTree.getValue(openvdb::Coord(0, 0, 2))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 0, 2))); + + // a = 1 (On, = bg), b = -2 (On) + CPPUNIT_ASSERT_EQUAL(op(one, minusTwo), aTree.getValue(openvdb::Coord(0, 1, 2))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 1, 2))); + + // a = 1 (bg), b = 4 (On) + CPPUNIT_ASSERT_EQUAL(op(one, four), aTree.getValue(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 1, 0))); + + // a = 3 (Off), b = -1 (Off) + CPPUNIT_ASSERT_EQUAL(op(three, minusOne), aTree.getValue(openvdb::Coord(1, 0, 0))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 0, 0))); + + // a = 3 (Off), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(three, five), aTree.getValue(openvdb::Coord(1, 0, 1))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 0, 1))); + + // a = 1 (bg), b = 4 (Off) + CPPUNIT_ASSERT_EQUAL(op(one, four), aTree.getValue(openvdb::Coord(1, 1, 0))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 1, 0))); + + // a = 1 (bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(one, five), aTree.getValue(openvdb::Coord(1000, 1, 2))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1000, 1, 2))); + } + + // As above, but combining the A grid into the B grid + { + TreeT aTree(/*bg=*/one); + aTree.setValueOn(openvdb::Coord(0, 0, 0), three); + aTree.setValueOn(openvdb::Coord(0, 0, 1), three); + aTree.setValueOn(openvdb::Coord(0, 0, 2), aTree.background()); + aTree.setValueOn(openvdb::Coord(0, 1, 2), aTree.background()); + aTree.setValueOff(openvdb::Coord(1, 0, 0), three); + aTree.setValueOff(openvdb::Coord(1, 0, 1), three); + + TreeT bTree(five); + bTree.setValueOn(openvdb::Coord(0, 0, 0), minusOne); + bTree.setValueOn(openvdb::Coord(0, 1, 0), four); + bTree.setValueOn(openvdb::Coord(0, 1, 2), minusTwo); + bTree.setValueOff(openvdb::Coord(1, 0, 0), minusOne); + bTree.setValueOff(openvdb::Coord(1, 1, 0), four); + + // Call bTree.compMax(aTree), bTree.compSum(aTree), etc. + comp(bTree, aTree); + + // a = 3 (On), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(op(minusOne, three), bTree.getValue(openvdb::Coord(0, 0, 0))); + + // a = 3 (On), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(five, three), bTree.getValue(openvdb::Coord(0, 0, 1))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 0, 1))); + + // a = 1 (On, = bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(five, one), bTree.getValue(openvdb::Coord(0, 0, 2))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 0, 2))); + + // a = 1 (On, = bg), b = -2 (On) + CPPUNIT_ASSERT_EQUAL(op(minusTwo, one), bTree.getValue(openvdb::Coord(0, 1, 2))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 1, 2))); + + // a = 1 (bg), b = 4 (On) + CPPUNIT_ASSERT_EQUAL(op(four, one), bTree.getValue(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 1, 0))); + + // a = 3 (Off), b = -1 (Off) + CPPUNIT_ASSERT_EQUAL(op(minusOne, three), bTree.getValue(openvdb::Coord(1, 0, 0))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 0, 0))); + + // a = 3 (Off), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(five, three), bTree.getValue(openvdb::Coord(1, 0, 1))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 0, 1))); + + // a = 1 (bg), b = 4 (Off) + CPPUNIT_ASSERT_EQUAL(op(four, one), bTree.getValue(openvdb::Coord(1, 1, 0))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 1, 0))); + + // a = 1 (bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(op(five, one), bTree.getValue(openvdb::Coord(1000, 1, 2))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1000, 1, 2))); + } +} + + +//////////////////////////////////////// + + +void +TestTreeCombine::testCombine2() +{ + using openvdb::Coord; + using openvdb::Vec3d; + + struct Local { + static void floatAverage(const float& a, const float& b, float& result) + { result = 0.5f * (a + b); } + static void vec3dAverage(const Vec3d& a, const Vec3d& b, Vec3d& result) + { result = 0.5 * (a + b); } + static void vec3dFloatMultiply(const Vec3d& a, const float& b, Vec3d& result) + { result = a * b; } + static void vec3dBoolMultiply(const Vec3d& a, const bool& b, Vec3d& result) + { result = a * b; } + }; + + const Coord c0(0, 0, 0), c1(0, 0, 1), c2(0, 1, 0), c3(1, 0, 0), c4(1000, 1, 2); + + openvdb::FloatTree aFloatTree(/*bg=*/1.0), bFloatTree(5.0), outFloatTree(1.0); + aFloatTree.setValue(c0, 3.0); + aFloatTree.setValue(c1, 3.0); + bFloatTree.setValue(c0, -1.0); + bFloatTree.setValue(c2, 4.0); + outFloatTree.combine2(aFloatTree, bFloatTree, Local::floatAverage); + + const float tolerance = 0.0; + // Average of set value 3 and set value -1 + CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, outFloatTree.getValue(c0), tolerance); + // Average of set value 3 and bg value 5 + CPPUNIT_ASSERT_DOUBLES_EQUAL(4.0, outFloatTree.getValue(c1), tolerance); + // Average of bg value 1 and set value 4 + CPPUNIT_ASSERT_DOUBLES_EQUAL(2.5, outFloatTree.getValue(c2), tolerance); + // Average of bg value 1 and bg value 5 + CPPUNIT_ASSERT(outFloatTree.isValueOff(c3)); + CPPUNIT_ASSERT(outFloatTree.isValueOff(c4)); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, outFloatTree.getValue(c3), tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(3.0, outFloatTree.getValue(c4), tolerance); + + // As above, but combining vector grids: + const Vec3d zero(0), one(1), two(2), three(3), four(4), five(5); + openvdb::Vec3DTree aVecTree(/*bg=*/one), bVecTree(five), outVecTree(one); + aVecTree.setValue(c0, three); + aVecTree.setValue(c1, three); + bVecTree.setValue(c0, -1.0 * one); + bVecTree.setValue(c2, four); + outVecTree.combine2(aVecTree, bVecTree, Local::vec3dAverage); + + // Average of set value 3 and set value -1 + CPPUNIT_ASSERT_EQUAL(one, outVecTree.getValue(c0)); + // Average of set value 3 and bg value 5 + CPPUNIT_ASSERT_EQUAL(four, outVecTree.getValue(c1)); + // Average of bg value 1 and set value 4 + CPPUNIT_ASSERT_EQUAL(2.5 * one, outVecTree.getValue(c2)); + // Average of bg value 1 and bg value 5 + CPPUNIT_ASSERT(outVecTree.isValueOff(c3)); + CPPUNIT_ASSERT(outVecTree.isValueOff(c4)); + CPPUNIT_ASSERT_EQUAL(three, outVecTree.getValue(c3)); + CPPUNIT_ASSERT_EQUAL(three, outVecTree.getValue(c4)); + + // Multiply the vector tree by the scalar tree. + { + openvdb::Vec3DTree vecTree(one); + vecTree.combine2(outVecTree, outFloatTree, Local::vec3dFloatMultiply); + + // Product of set value (1, 1, 1) and set value 1 + CPPUNIT_ASSERT(vecTree.isValueOn(c0)); + CPPUNIT_ASSERT_EQUAL(one, vecTree.getValue(c0)); + // Product of set value (4, 4, 4) and set value 4 + CPPUNIT_ASSERT(vecTree.isValueOn(c1)); + CPPUNIT_ASSERT_EQUAL(4 * 4 * one, vecTree.getValue(c1)); + // Product of set value (2.5, 2.5, 2.5) and set value 2.5 + CPPUNIT_ASSERT(vecTree.isValueOn(c2)); + CPPUNIT_ASSERT_EQUAL(2.5 * 2.5 * one, vecTree.getValue(c2)); + // Product of bg value (3, 3, 3) and bg value 3 + CPPUNIT_ASSERT(vecTree.isValueOff(c3)); + CPPUNIT_ASSERT(vecTree.isValueOff(c4)); + CPPUNIT_ASSERT_EQUAL(3 * 3 * one, vecTree.getValue(c3)); + CPPUNIT_ASSERT_EQUAL(3 * 3 * one, vecTree.getValue(c4)); + } + + // Multiply the vector tree by a boolean tree. + { + openvdb::BoolTree boolTree(0); + boolTree.setValue(c0, true); + boolTree.setValue(c1, false); + boolTree.setValue(c2, true); + + openvdb::Vec3DTree vecTree(one); + vecTree.combine2(outVecTree, boolTree, Local::vec3dBoolMultiply); + + // Product of set value (1, 1, 1) and set value 1 + CPPUNIT_ASSERT(vecTree.isValueOn(c0)); + CPPUNIT_ASSERT_EQUAL(one, vecTree.getValue(c0)); + // Product of set value (4, 4, 4) and set value 0 + CPPUNIT_ASSERT(vecTree.isValueOn(c1)); + CPPUNIT_ASSERT_EQUAL(zero, vecTree.getValue(c1)); + // Product of set value (2.5, 2.5, 2.5) and set value 1 + CPPUNIT_ASSERT(vecTree.isValueOn(c2)); + CPPUNIT_ASSERT_EQUAL(2.5 * one, vecTree.getValue(c2)); + // Product of bg value (3, 3, 3) and bg value 0 + CPPUNIT_ASSERT(vecTree.isValueOff(c3)); + CPPUNIT_ASSERT(vecTree.isValueOff(c4)); + CPPUNIT_ASSERT_EQUAL(zero, vecTree.getValue(c3)); + CPPUNIT_ASSERT_EQUAL(zero, vecTree.getValue(c4)); + } + + // Verify that a vector tree can't be combined into a scalar tree + // (although the reverse is allowed). + { + struct Local2 { + static void f(const float& a, const Vec3d&, float& result) { result = a; } + }; + openvdb::FloatTree floatTree(5.0), outTree; + openvdb::Vec3DTree vecTree(one); + CPPUNIT_ASSERT_THROW(outTree.combine2(floatTree, vecTree, Local2::f), openvdb::TypeError); + } +} + + +//////////////////////////////////////// + + +void +TestTreeCombine::testBoolTree() +{ + openvdb::BoolGrid::Ptr sphere = openvdb::BoolGrid::create(); + + unittest_util::makeSphere(/*dim=*/openvdb::Coord(32), + /*ctr=*/openvdb::Vec3f(0), + /*radius=*/20.0, *sphere, + unittest_util::SPHERE_SPARSE_NARROW_BAND); + + openvdb::BoolGrid::Ptr + aGrid = sphere->copy(), + bGrid = sphere->copy(); + + // CSG operations work only on level sets with a nonzero inside and outside values. + CPPUNIT_ASSERT_THROW(openvdb::tools::csgUnion(aGrid->tree(), bGrid->tree()), + openvdb::ValueError); + CPPUNIT_ASSERT_THROW(openvdb::tools::csgIntersection(aGrid->tree(), bGrid->tree()), + openvdb::ValueError); + CPPUNIT_ASSERT_THROW(openvdb::tools::csgDifference(aGrid->tree(), bGrid->tree()), + openvdb::ValueError); + + openvdb::tools::compSum(aGrid->tree(), bGrid->tree()); + + bGrid = sphere->copy(); + openvdb::tools::compMax(aGrid->tree(), bGrid->tree()); + + int mismatches = 0; + openvdb::BoolGrid::ConstAccessor acc = sphere->getConstAccessor(); + for (openvdb::BoolGrid::ValueAllCIter it = aGrid->cbeginValueAll(); it; ++it) { + if (*it != acc.getValue(it.getCoord())) ++mismatches; + } + CPPUNIT_ASSERT_EQUAL(0, mismatches); +} + + +//////////////////////////////////////// + + +template +void +TestTreeCombine::testCompRepl() +{ + using ValueT = typename TreeT::ValueType; + + const ValueT + zero = openvdb::zeroVal(), + minusOne = zero + (-1), + one = zero + 1, + three = zero + 3, + four = zero + 4, + five = zero + 5; + + { + TreeT aTree(/*bg=*/one); + aTree.setValueOn(openvdb::Coord(0, 0, 0), three); + aTree.setValueOn(openvdb::Coord(0, 0, 1), three); + aTree.setValueOn(openvdb::Coord(0, 0, 2), aTree.background()); + aTree.setValueOn(openvdb::Coord(0, 1, 2), aTree.background()); + aTree.setValueOff(openvdb::Coord(1, 0, 0), three); + aTree.setValueOff(openvdb::Coord(1, 0, 1), three); + + TreeT bTree(five); + bTree.setValueOn(openvdb::Coord(0, 0, 0), minusOne); + bTree.setValueOn(openvdb::Coord(0, 1, 0), four); + bTree.setValueOn(openvdb::Coord(0, 1, 2), minusOne); + bTree.setValueOff(openvdb::Coord(1, 0, 0), minusOne); + bTree.setValueOff(openvdb::Coord(1, 1, 0), four); + + // Copy active voxels of bTree into aTree. + openvdb::tools::compReplace(aTree, bTree); + + // a = 3 (On), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(minusOne, aTree.getValue(openvdb::Coord(0, 0, 0))); + + // a = 3 (On), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(three, aTree.getValue(openvdb::Coord(0, 0, 1))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 0, 1))); + + // a = 1 (On, = bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(one, aTree.getValue(openvdb::Coord(0, 0, 2))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 0, 2))); + + // a = 1 (On, = bg), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(minusOne, aTree.getValue(openvdb::Coord(0, 1, 2))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 1, 2))); + + // a = 1 (bg), b = 4 (On) + CPPUNIT_ASSERT_EQUAL(four, aTree.getValue(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(aTree.isValueOn(openvdb::Coord(0, 1, 0))); + + // a = 3 (Off), b = -1 (Off) + CPPUNIT_ASSERT_EQUAL(three, aTree.getValue(openvdb::Coord(1, 0, 0))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 0, 0))); + + // a = 3 (Off), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(three, aTree.getValue(openvdb::Coord(1, 0, 1))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 0, 1))); + + // a = 1 (bg), b = 4 (Off) + CPPUNIT_ASSERT_EQUAL(one, aTree.getValue(openvdb::Coord(1, 1, 0))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1, 1, 0))); + + // a = 1 (bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(one, aTree.getValue(openvdb::Coord(1000, 1, 2))); + CPPUNIT_ASSERT(aTree.isValueOff(openvdb::Coord(1000, 1, 2))); + } + + // As above, but combining the A grid into the B grid + { + TreeT aTree(/*background=*/one); + aTree.setValueOn(openvdb::Coord(0, 0, 0), three); + aTree.setValueOn(openvdb::Coord(0, 0, 1), three); + aTree.setValueOn(openvdb::Coord(0, 0, 2), aTree.background()); + aTree.setValueOn(openvdb::Coord(0, 1, 2), aTree.background()); + aTree.setValueOff(openvdb::Coord(1, 0, 0), three); + aTree.setValueOff(openvdb::Coord(1, 0, 1), three); + + TreeT bTree(five); + bTree.setValueOn(openvdb::Coord(0, 0, 0), minusOne); + bTree.setValueOn(openvdb::Coord(0, 1, 0), four); + bTree.setValueOn(openvdb::Coord(0, 1, 2), minusOne); + bTree.setValueOff(openvdb::Coord(1, 0, 0), minusOne); + bTree.setValueOff(openvdb::Coord(1, 1, 0), four); + + // Copy active voxels of aTree into bTree. + openvdb::tools::compReplace(bTree, aTree); + + // a = 3 (On), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(three, bTree.getValue(openvdb::Coord(0, 0, 0))); + + // a = 3 (On), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(three, bTree.getValue(openvdb::Coord(0, 0, 1))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 0, 1))); + + // a = 1 (On, = bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(one, bTree.getValue(openvdb::Coord(0, 0, 2))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 0, 2))); + + // a = 1 (On, = bg), b = -1 (On) + CPPUNIT_ASSERT_EQUAL(one, bTree.getValue(openvdb::Coord(0, 1, 2))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 1, 2))); + + // a = 1 (bg), b = 4 (On) + CPPUNIT_ASSERT_EQUAL(four, bTree.getValue(openvdb::Coord(0, 1, 0))); + CPPUNIT_ASSERT(bTree.isValueOn(openvdb::Coord(0, 1, 0))); + + // a = 3 (Off), b = -1 (Off) + CPPUNIT_ASSERT_EQUAL(minusOne, bTree.getValue(openvdb::Coord(1, 0, 0))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 0, 0))); + + // a = 3 (Off), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(five, bTree.getValue(openvdb::Coord(1, 0, 1))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 0, 1))); + + // a = 1 (bg), b = 4 (Off) + CPPUNIT_ASSERT_EQUAL(four, bTree.getValue(openvdb::Coord(1, 1, 0))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1, 1, 0))); + + // a = 1 (bg), b = 5 (bg) + CPPUNIT_ASSERT_EQUAL(five, bTree.getValue(openvdb::Coord(1000, 1, 2))); + CPPUNIT_ASSERT(bTree.isValueOff(openvdb::Coord(1000, 1, 2))); + } +} + + +//////////////////////////////////////// + + +void +TestTreeCombine::testCsg() +{ + using TreeT = openvdb::FloatTree; + using TreePtr = TreeT::Ptr; + using GridT = openvdb::Grid; + + struct Local { + static TreePtr readFile(const std::string& fname) { + std::string filename(fname), gridName("LevelSet"); + size_t space = filename.find_last_of(' '); + if (space != std::string::npos) { + gridName = filename.substr(space + 1); + filename.erase(space); + } + + TreePtr tree; + openvdb::io::File file(filename); + file.open(); + if (openvdb::GridBase::Ptr basePtr = file.readGrid(gridName)) { + if (GridT::Ptr gridPtr = openvdb::gridPtrCast(basePtr)) { + tree = gridPtr->treePtr(); + } + } + file.close(); + return tree; + } + + //static void writeFile(TreePtr tree, const std::string& filename) { + // openvdb::io::File file(filename); + // openvdb::GridPtrVec grids; + // GridT::Ptr grid = openvdb::createGrid(tree); + // grid->setName("LevelSet"); + // grids.push_back(grid); + // file.write(grids); + //} + + static void visitorUnion(TreeT& a, TreeT& b) { openvdb::tools::csgUnion(a, b); } + static void visitorIntersect(TreeT& a, TreeT& b) { openvdb::tools::csgIntersection(a, b); } + static void visitorDiff(TreeT& a, TreeT& b) { openvdb::tools::csgDifference(a, b); } + }; + + TreePtr smallTree1, smallTree2, largeTree1, largeTree2, refTree, outTree; + +#if TEST_CSG_VERBOSE + openvdb::util::CpuTimer timer; + timer.start(); +#endif + + const std::string testDir("/work/rd/fx_tools/vdb_unittest/TestGridCombine::testCsg/"); + smallTree1 = Local::readFile(testDir + "small1.vdb2 LevelSet"); + CPPUNIT_ASSERT(smallTree1.get() != nullptr); + smallTree2 = Local::readFile(testDir + "small2.vdb2 Cylinder"); + CPPUNIT_ASSERT(smallTree2.get() != nullptr); + largeTree1 = Local::readFile(testDir + "large1.vdb2 LevelSet"); + CPPUNIT_ASSERT(largeTree1.get() != nullptr); + largeTree2 = Local::readFile(testDir + "large2.vdb2 LevelSet"); + CPPUNIT_ASSERT(largeTree2.get() != nullptr); + +#if TEST_CSG_VERBOSE + std::cerr << "file read: " << timer.milliseconds() << " msec\n"; +#endif + +#if TEST_CSG_VERBOSE + std::cerr << "\n\n"; +#endif + refTree = Local::readFile(testDir + "small_union.vdb2"); + outTree = visitCsg(*smallTree1, *smallTree2, *refTree, Local::visitorUnion); + //Local::writeFile(outTree, "small_union_out.vdb2"); + refTree = Local::readFile(testDir + "large_union.vdb2"); + outTree = visitCsg(*largeTree1, *largeTree2, *refTree, Local::visitorUnion); + //Local::writeFile(outTree, "large_union_out.vdb2"); + +#if TEST_CSG_VERBOSE + std::cerr << "\n\n"; +#endif + refTree = Local::readFile(testDir + "small_intersection.vdb2"); + outTree = visitCsg(*smallTree1, *smallTree2, *refTree, Local::visitorIntersect); + //Local::writeFile(outTree, "small_intersection_out.vdb2"); + refTree = Local::readFile(testDir + "large_intersection.vdb2"); + outTree = visitCsg(*largeTree1, *largeTree2, *refTree, Local::visitorIntersect); + //Local::writeFile(outTree, "large_intersection_out.vdb2"); + +#if TEST_CSG_VERBOSE + std::cerr << "\n\n"; +#endif + refTree = Local::readFile(testDir + "small_difference.vdb2"); + outTree = visitCsg(*smallTree1, *smallTree2, *refTree, Local::visitorDiff); + //Local::writeFile(outTree, "small_difference_out.vdb2"); + refTree = Local::readFile(testDir + "large_difference.vdb2"); + outTree = visitCsg(*largeTree1, *largeTree2, *refTree, Local::visitorDiff); + //Local::writeFile(outTree, "large_difference_out.vdb2"); +} + + +template +typename TreeT::Ptr +TestTreeCombine::visitCsg(const TreeT& aInputTree, const TreeT& bInputTree, + const TreeT& refTree, const VisitorT& visitor) +{ + using TreePtr = typename TreeT::Ptr; + +#if TEST_CSG_VERBOSE + openvdb::util::CpuTimer timer; + timer.start(); +#endif + TreePtr aTree(new TreeT(aInputTree)); + TreeT bTree(bInputTree); +#if TEST_CSG_VERBOSE + std::cerr << "deep copy: " << timer.milliseconds() << " msec\n"; +#endif + +#if (TEST_CSG_VERBOSE > 1) + std::cerr << "\nA grid:\n"; + aTree->print(std::cerr, /*verbose=*/3); + std::cerr << "\nB grid:\n"; + bTree.print(std::cerr, /*verbose=*/3); + std::cerr << "\nExpected:\n"; + refTree.print(std::cerr, /*verbose=*/3); + std::cerr << "\n"; +#endif + + // Compute the CSG combination of the two grids. +#if TEST_CSG_VERBOSE + timer.start(); +#endif + visitor(*aTree, bTree); +#if TEST_CSG_VERBOSE + std::cerr << "combine: " << timer.milliseconds() << " msec\n"; +#endif +#if (TEST_CSG_VERBOSE > 1) + std::cerr << "\nActual:\n"; + aTree->print(std::cerr, /*verbose=*/3); +#endif + + std::ostringstream aInfo, refInfo; + aTree->print(aInfo, /*verbose=*/2); + refTree.print(refInfo, /*verbose=*/2); + + CPPUNIT_ASSERT_EQUAL(refInfo.str(), aInfo.str()); + + CPPUNIT_ASSERT(aTree->hasSameTopology(refTree)); + + return aTree; +} + + +//////////////////////////////////////// + + +void +TestTreeCombine::testCsgCopy() +{ + const float voxelSize = 0.2f; + const float radius = 3.0f; + openvdb::Vec3f center(0.0f, 0.0f, 0.0f); + + openvdb::FloatGrid::Ptr gridA = + openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + + openvdb::Coord ijkA = gridA->transform().worldToIndexNodeCentered(center); + CPPUNIT_ASSERT(gridA->tree().getValue(ijkA) < 0.0f); // center is inside + + center.x() += 3.5f; + + openvdb::FloatGrid::Ptr gridB = + openvdb::tools::createLevelSetSphere(radius, center, voxelSize); + + openvdb::Coord ijkB = gridA->transform().worldToIndexNodeCentered(center); + CPPUNIT_ASSERT(gridB->tree().getValue(ijkB) < 0.0f); // center is inside + + openvdb::FloatGrid::Ptr unionGrid = openvdb::tools::csgUnionCopy(*gridA, *gridB); + openvdb::FloatGrid::Ptr intersectionGrid = openvdb::tools::csgIntersectionCopy(*gridA, *gridB); + openvdb::FloatGrid::Ptr differenceGrid = openvdb::tools::csgDifferenceCopy(*gridA, *gridB); + + CPPUNIT_ASSERT(unionGrid.get() != nullptr); + CPPUNIT_ASSERT(intersectionGrid.get() != nullptr); + CPPUNIT_ASSERT(differenceGrid.get() != nullptr); + + CPPUNIT_ASSERT(!unionGrid->empty()); + CPPUNIT_ASSERT(!intersectionGrid->empty()); + CPPUNIT_ASSERT(!differenceGrid->empty()); + + // test inside / outside sign + + CPPUNIT_ASSERT(unionGrid->tree().getValue(ijkA) < 0.0f); + CPPUNIT_ASSERT(unionGrid->tree().getValue(ijkB) < 0.0f); + + CPPUNIT_ASSERT(!(intersectionGrid->tree().getValue(ijkA) < 0.0f)); + CPPUNIT_ASSERT(!(intersectionGrid->tree().getValue(ijkB) < 0.0f)); + + CPPUNIT_ASSERT(differenceGrid->tree().getValue(ijkA) < 0.0f); + CPPUNIT_ASSERT(!(differenceGrid->tree().getValue(ijkB) < 0.0f)); +} + + +//////////////////////////////////////// + +void +TestTreeCombine::testCompActiveLeafVoxels() +{ + {//replace float tree (default argument) + openvdb::FloatTree srcTree(0.0f), dstTree(0.0f); + + dstTree.setValue(openvdb::Coord(1,1,1), 1.0f); + srcTree.setValue(openvdb::Coord(1,1,1), 2.0f); + srcTree.setValue(openvdb::Coord(8,8,8), 3.0f); + + CPPUNIT_ASSERT_EQUAL(1, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(1.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(0.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(!dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + + openvdb::tools::compActiveLeafVoxels(srcTree, dstTree); + + CPPUNIT_ASSERT_EQUAL(2, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(3.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + } + {//replace float tree (lambda expression) + openvdb::FloatTree srcTree(0.0f), dstTree(0.0f); + + dstTree.setValue(openvdb::Coord(1,1,1), 1.0f); + srcTree.setValue(openvdb::Coord(1,1,1), 2.0f); + srcTree.setValue(openvdb::Coord(8,8,8), 3.0f); + + CPPUNIT_ASSERT_EQUAL(1, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(1.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(0.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(!dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + + openvdb::tools::compActiveLeafVoxels(srcTree, dstTree, [](float &d, float s){d=s;}); + + CPPUNIT_ASSERT_EQUAL(2, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(3.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + } + {//add float tree + openvdb::FloatTree srcTree(0.0f), dstTree(0.0f); + + dstTree.setValue(openvdb::Coord(1,1,1), 1.0f); + srcTree.setValue(openvdb::Coord(1,1,1), 2.0f); + srcTree.setValue(openvdb::Coord(8,8,8), 3.0f); + + CPPUNIT_ASSERT_EQUAL(1, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(1.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(0.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(!dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + + openvdb::tools::compActiveLeafVoxels(srcTree, dstTree, [](float &d, float s){d+=s;}); + + CPPUNIT_ASSERT_EQUAL(2, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(3.0f, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(3.0f, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + } + { + using BufferT = openvdb::FloatTree::LeafNodeType::Buffer; + CPPUNIT_ASSERT((std::is_same::value)); + } + { + using BufferT = openvdb::Vec3fTree::LeafNodeType::Buffer; + CPPUNIT_ASSERT((std::is_same::value)); + } + { + using BufferT = openvdb::BoolTree::LeafNodeType::Buffer; + CPPUNIT_ASSERT(!(std::is_same::value)); + } + { + using BufferT = openvdb::MaskTree::LeafNodeType::Buffer; + CPPUNIT_ASSERT(!(std::is_same::value)); + } + {//replace bool tree + openvdb::BoolTree srcTree(false), dstTree(false); + + dstTree.setValue(openvdb::Coord(1,1,1), true); + srcTree.setValue(openvdb::Coord(1,1,1), false); + srcTree.setValue(openvdb::Coord(8,8,8), true); + //(9,8,8) is inactive but true so it should have no effect + srcTree.setValueOnly(openvdb::Coord(9,8,8), true); + + CPPUNIT_ASSERT_EQUAL(1, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(true, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(false, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(!dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT_EQUAL(true, srcTree.getValue(openvdb::Coord(9, 8, 8))); + CPPUNIT_ASSERT(!srcTree.isValueOn(openvdb::Coord(9, 8, 8))); + + using Word = openvdb::BoolTree::LeafNodeType::Buffer::WordType; + openvdb::tools::compActiveLeafVoxels(srcTree, dstTree, [](Word &d, Word s){d=s;}); + + CPPUNIT_ASSERT_EQUAL(2, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(false, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(true, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + } + {// mask tree + openvdb::MaskTree srcTree(false), dstTree(false); + + dstTree.setValueOn(openvdb::Coord(1,1,1)); + srcTree.setValueOn(openvdb::Coord(1,1,1)); + srcTree.setValueOn(openvdb::Coord(8,8,8)); + + CPPUNIT_ASSERT_EQUAL(1, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(2, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(true, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(false, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(!dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + + openvdb::tools::compActiveLeafVoxels(srcTree, dstTree); + + CPPUNIT_ASSERT_EQUAL(2, int(dstTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(0, int(srcTree.leafCount())); + CPPUNIT_ASSERT_EQUAL(true, dstTree.getValue(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(1, 1, 1))); + CPPUNIT_ASSERT_EQUAL(true, dstTree.getValue(openvdb::Coord(8, 8, 8))); + CPPUNIT_ASSERT(dstTree.isValueOn(openvdb::Coord(8, 8, 8))); + } +} + + +//////////////////////////////////////// + diff --git a/openvdb/unittest/TestTreeGetSetValues.cc b/openvdb/unittest/TestTreeGetSetValues.cc new file mode 100644 index 00000000..b9bf87af --- /dev/null +++ b/openvdb/unittest/TestTreeGetSetValues.cc @@ -0,0 +1,436 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include // for tools::setValueOnMin() et al. +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + + +class TestTreeGetSetValues: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestTreeGetSetValues); + CPPUNIT_TEST(testGetValues); + CPPUNIT_TEST(testSetValues); + CPPUNIT_TEST(testUnsetValues); + CPPUNIT_TEST(testFill); + CPPUNIT_TEST(testSetActiveStates); + CPPUNIT_TEST(testHasActiveTiles); + CPPUNIT_TEST_SUITE_END(); + + void testGetBackground(); + void testGetValues(); + void testSetValues(); + void testUnsetValues(); + void testFill(); + void testSetActiveStates(); + void testHasActiveTiles(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTreeGetSetValues); + +namespace { +typedef openvdb::tree::Tree4::Type Tree323f; // 8^3 x 4^3 x 8^3 +} + + +void +TestTreeGetSetValues::testGetBackground() +{ + const float background = 256.0f; + Tree323f tree(background); + + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.background()); +} + + +void +TestTreeGetSetValues::testGetValues() +{ + Tree323f tree(/*background=*/256.0f); + + tree.setValue(openvdb::Coord(0, 0, 0), 1.0); + tree.setValue(openvdb::Coord(1, 0, 0), 1.5); + tree.setValue(openvdb::Coord(0, 0, 8), 2.0); + tree.setValue(openvdb::Coord(1, 0, 8), 2.5); + tree.setValue(openvdb::Coord(0, 0, 16), 3.0); + tree.setValue(openvdb::Coord(1, 0, 16), 3.5); + tree.setValue(openvdb::Coord(0, 0, 24), 4.0); + tree.setValue(openvdb::Coord(1, 0, 24), 4.5); + + ASSERT_DOUBLES_EXACTLY_EQUAL(1.0, tree.getValue(openvdb::Coord(0, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(1.5, tree.getValue(openvdb::Coord(1, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(2.0, tree.getValue(openvdb::Coord(0, 0, 8))); + ASSERT_DOUBLES_EXACTLY_EQUAL(2.5, tree.getValue(openvdb::Coord(1, 0, 8))); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.0, tree.getValue(openvdb::Coord(0, 0, 16))); + ASSERT_DOUBLES_EXACTLY_EQUAL(3.5, tree.getValue(openvdb::Coord(1, 0, 16))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.0, tree.getValue(openvdb::Coord(0, 0, 24))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5, tree.getValue(openvdb::Coord(1, 0, 24))); +} + + +void +TestTreeGetSetValues::testSetValues() +{ + using namespace openvdb; + + const float background = 256.0; + Tree323f tree(background); + + for (int activeTile = 0; activeTile < 2; ++activeTile) { + if (activeTile) tree.fill(CoordBBox(Coord(0), Coord(31)), background, /*active=*/true); + + tree.setValue(openvdb::Coord(0, 0, 0), 1.0); + tree.setValue(openvdb::Coord(1, 0, 0), 1.5); + tree.setValue(openvdb::Coord(0, 0, 8), 2.0); + tree.setValue(openvdb::Coord(1, 0, 8), 2.5); + tree.setValue(openvdb::Coord(0, 0, 16), 3.0); + tree.setValue(openvdb::Coord(1, 0, 16), 3.5); + tree.setValue(openvdb::Coord(0, 0, 24), 4.0); + tree.setValue(openvdb::Coord(1, 0, 24), 4.5); + + const int expectedActiveCount = (!activeTile ? 8 : 32 * 32 * 32); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + + float val = 1.f; + for (Tree323f::LeafCIter iter = tree.cbeginLeaf(); iter; ++iter) { + ASSERT_DOUBLES_EXACTLY_EQUAL(val, iter->getValue(openvdb::Coord(0, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(val+0.5, iter->getValue(openvdb::Coord(1, 0, 0))); + val = val + 1.f; + } + } +} + + +void +TestTreeGetSetValues::testUnsetValues() +{ + using namespace openvdb; + + const float background = 256.0; + Tree323f tree(background); + + for (int activeTile = 0; activeTile < 2; ++activeTile) { + if (activeTile) tree.fill(CoordBBox(Coord(0), Coord(31)), background, /*active=*/true); + + Coord setCoords[8] = { + Coord(0, 0, 0), + Coord(1, 0, 0), + Coord(0, 0, 8), + Coord(1, 0, 8), + Coord(0, 0, 16), + Coord(1, 0, 16), + Coord(0, 0, 24), + Coord(1, 0, 24) + }; + + for (int i = 0; i < 8; ++i) { + tree.setValue(setCoords[i], 1.0); + } + const int expectedActiveCount = (!activeTile ? 8 : 32 * 32 * 32); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + + // Unset some voxels. + for (int i = 0; i < 8; i += 2) { + tree.setValueOff(setCoords[i]); + } + CPPUNIT_ASSERT_EQUAL(expectedActiveCount - 4, int(tree.activeVoxelCount())); + + // Unset some voxels, but change their values. + for (int i = 0; i < 8; i += 2) { + tree.setValueOff(setCoords[i], background); + } + CPPUNIT_ASSERT_EQUAL(expectedActiveCount - 4, int(tree.activeVoxelCount())); + for (int i = 0; i < 8; i += 2) { + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(setCoords[i])); + } + } +} + + +void +TestTreeGetSetValues::testFill() +{ + using openvdb::CoordBBox; + using openvdb::Coord; + + const float background = 256.0; + Tree323f tree(background); + + // Fill from (-2,-2,-2) to (2,2,2) with active value 2. + tree.fill(CoordBBox(Coord(-2), Coord(2)), 2.0); + Coord xyz, xyzMin = Coord::max(), xyzMax = Coord::min(); + for (Tree323f::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + xyz = iter.getCoord(); + xyzMin = std::min(xyzMin, xyz); + xyzMax = std::max(xyz, xyzMax); + ASSERT_DOUBLES_EXACTLY_EQUAL(2.0, *iter); + } + CPPUNIT_ASSERT_EQUAL(openvdb::Index64(5*5*5), tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Coord(-2), xyzMin); + CPPUNIT_ASSERT_EQUAL(Coord( 2), xyzMax); + + // Fill from (1,1,1) to (3,3,3) with active value 3. + tree.fill(CoordBBox(Coord(1), Coord(3)), 3.0); + xyzMin = Coord::max(); xyzMax = Coord::min(); + for (Tree323f::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + xyz = iter.getCoord(); + xyzMin = std::min(xyzMin, xyz); + xyzMax = std::max(xyz, xyzMax); + const float expectedValue = (xyz[0] >= 1 && xyz[1] >= 1 && xyz[2] >= 1 + && xyz[0] <= 3 && xyz[1] <= 3 && xyz[2] <= 3) ? 3.0 : 2.0; + ASSERT_DOUBLES_EXACTLY_EQUAL(expectedValue, *iter); + } + openvdb::Index64 expectedCount = + 5*5*5 // (-2,-2,-2) to (2,2,2) + + 3*3*3 // (1,1,1) to (3,3,3) + - 2*2*2; // (1,1,1) to (2,2,2) overlap + CPPUNIT_ASSERT_EQUAL(expectedCount, tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Coord(-2), xyzMin); + CPPUNIT_ASSERT_EQUAL(Coord( 3), xyzMax); + + // Fill from (10,10,10) to (20,20,20) with active value 10. + tree.fill(CoordBBox(Coord(10), Coord(20)), 10.0); + xyzMin = Coord::max(); xyzMax = Coord::min(); + for (Tree323f::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + xyz = iter.getCoord(); + xyzMin = std::min(xyzMin, xyz); + xyzMax = std::max(xyz, xyzMax); + float expectedValue = 2.0; + if (xyz[0] >= 1 && xyz[1] >= 1 && xyz[2] >= 1 + && xyz[0] <= 3 && xyz[1] <= 3 && xyz[2] <= 3) + { + expectedValue = 3.0; + } else if (xyz[0] >= 10 && xyz[1] >= 10 && xyz[2] >= 10 + && xyz[0] <= 20 && xyz[1] <= 20 && xyz[2] <= 20) + { + expectedValue = 10.0; + } + ASSERT_DOUBLES_EXACTLY_EQUAL(expectedValue, *iter); + } + expectedCount = + 5*5*5 // (-2,-2,-2) to (2,2,2) + + 3*3*3 // (1,1,1) to (3,3,3) + - 2*2*2 // (1,1,1) to (2,2,2) overlap + + 11*11*11; // (10,10,10) to (20,20,20) + CPPUNIT_ASSERT_EQUAL(expectedCount, tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Coord(-2), xyzMin); + CPPUNIT_ASSERT_EQUAL(Coord(20), xyzMax); + + // "Undo" previous fill from (10,10,10) to (20,20,20). + tree.fill(CoordBBox(Coord(10), Coord(20)), background, /*active=*/false); + xyzMin = Coord::max(); xyzMax = Coord::min(); + for (Tree323f::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + xyz = iter.getCoord(); + xyzMin = std::min(xyzMin, xyz); + xyzMax = std::max(xyz, xyzMax); + const float expectedValue = (xyz[0] >= 1 && xyz[1] >= 1 && xyz[2] >= 1 + && xyz[0] <= 3 && xyz[1] <= 3 && xyz[2] <= 3) ? 3.0 : 2.0; + ASSERT_DOUBLES_EXACTLY_EQUAL(expectedValue, *iter); + } + expectedCount = + 5*5*5 // (-2,-2,-2) to (2,2,2) + + 3*3*3 // (1,1,1) to (3,3,3) + - 2*2*2; // (1,1,1) to (2,2,2) overlap + CPPUNIT_ASSERT_EQUAL(expectedCount, tree.activeVoxelCount()); + CPPUNIT_ASSERT_EQUAL(Coord(-2), xyzMin); + CPPUNIT_ASSERT_EQUAL(Coord( 3), xyzMax); + + // The following tests assume a [3,2,3] tree configuration. + + tree.clear(); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); // root node + + // Partially fill a single leaf node. + tree.fill(CoordBBox(Coord(8), Coord(14)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + // Completely fill the leaf node, replacing it with a tile. + tree.fill(CoordBBox(Coord(8), Coord(15)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + { + const int activeVoxelCount = int(tree.activeVoxelCount()); + + // Fill a single voxel of the tile with a different (active) value. + tree.fill(CoordBBox(Coord(10), Coord(10)), 1.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + CPPUNIT_ASSERT_EQUAL(activeVoxelCount, int(tree.activeVoxelCount())); + // Fill the voxel with an inactive value. + tree.fill(CoordBBox(Coord(10), Coord(10)), 1.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + CPPUNIT_ASSERT_EQUAL(activeVoxelCount - 1, int(tree.activeVoxelCount())); + + // Completely fill the leaf node, replacing it with a tile again. + tree.fill(CoordBBox(Coord(8), Coord(15)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + } + + // Expand by one voxel, creating seven neighboring leaf nodes. + tree.fill(CoordBBox(Coord(8), Coord(16)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + // Completely fill the internal node containing the tile, replacing it with + // a tile at the next level of the tree. + tree.fill(CoordBBox(Coord(0), Coord(31)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(2), tree.nonLeafCount()); + + // Expand by one voxel, creating a layer of leaf nodes on three faces. + tree.fill(CoordBBox(Coord(0), Coord(32)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(5*5 + 4*5 + 4*4), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(2 + 7), tree.nonLeafCount()); // +7 internal nodes + + // Completely fill the second-level internal node, replacing it with a root-level tile. + tree.fill(CoordBBox(Coord(0), Coord(255)), 0.0); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); + + // Repeat, filling with an inactive value. + + tree.clear(); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); // root node + + // Partially fill a single leaf node. + tree.fill(CoordBBox(Coord(8), Coord(14)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + // Completely fill the leaf node, replacing it with a tile. + tree.fill(CoordBBox(Coord(8), Coord(15)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + // Expand by one voxel, creating seven neighboring leaf nodes. + tree.fill(CoordBBox(Coord(8), Coord(16)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(7), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(3), tree.nonLeafCount()); + + // Completely fill the internal node containing the tile, replacing it with + // a tile at the next level of the tree. + tree.fill(CoordBBox(Coord(0), Coord(31)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(2), tree.nonLeafCount()); + + // Expand by one voxel, creating a layer of leaf nodes on three faces. + tree.fill(CoordBBox(Coord(0), Coord(32)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(5*5 + 4*5 + 4*4), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(2 + 7), tree.nonLeafCount()); // +7 internal nodes + + // Completely fill the second-level internal node, replacing it with a root-level tile. + tree.fill(CoordBBox(Coord(0), Coord(255)), 0.0, /*active=*/false); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); + + tree.clear(); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); // root node + CPPUNIT_ASSERT(tree.empty()); + + // Partially fill a region with inactive background values. + tree.fill(CoordBBox(Coord(27), Coord(254)), background, /*active=*/false); + // Confirm that after pruning, the tree is empty. + openvdb::tools::prune(tree); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(0), tree.leafCount()); + CPPUNIT_ASSERT_EQUAL(openvdb::Index32(1), tree.nonLeafCount()); // root node + CPPUNIT_ASSERT(tree.empty()); +} + + +// Verify that setting voxels inside active tiles works correctly. +// In particular, it should preserve the active states of surrounding voxels. +void +TestTreeGetSetValues::testSetActiveStates() +{ + using namespace openvdb; + + const float background = 256.0; + Tree323f tree(background); + + const Coord xyz(10); + const float val = 42.0; + const int expectedActiveCount = 32 * 32 * 32; + +#define RESET_TREE() \ + tree.fill(CoordBBox(Coord(0), Coord(31)), background, /*active=*/true) // create an active tile + + RESET_TREE(); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + + tree.setValueOff(xyz); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount - 1, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(xyz)); + + RESET_TREE(); + tree.setValueOn(xyz); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(xyz)); + + RESET_TREE(); + tree.setValueOff(xyz, val); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount - 1, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(val, tree.getValue(xyz)); + + RESET_TREE(); + tree.setActiveState(xyz, true); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(xyz)); + + RESET_TREE(); + tree.setActiveState(xyz, false); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount - 1, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(xyz)); + + RESET_TREE(); + tree.setValueOn(xyz, val); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(val, tree.getValue(xyz)); + + RESET_TREE(); + tools::setValueOnMin(tree, xyz, val); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(std::min(val, background), tree.getValue(xyz)); + + RESET_TREE(); + tools::setValueOnMax(tree, xyz, val); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(std::max(val, background), tree.getValue(xyz)); + + RESET_TREE(); + tools::setValueOnSum(tree, xyz, val); + CPPUNIT_ASSERT_EQUAL(expectedActiveCount, int(tree.activeVoxelCount())); + ASSERT_DOUBLES_EXACTLY_EQUAL(val + background, tree.getValue(xyz)); + +#undef RESET_TREE +} + + +void +TestTreeGetSetValues::testHasActiveTiles() +{ + Tree323f tree(/*background=*/256.0f); + + CPPUNIT_ASSERT(!tree.hasActiveTiles()); + + // Fill from (-2,-2,-2) to (2,2,2) with active value 2. + tree.fill(openvdb::CoordBBox(openvdb::Coord(-2), openvdb::Coord(2)), 2.0f); + CPPUNIT_ASSERT(!tree.hasActiveTiles()); + + // Fill from (-200,-200,-200) to (-4,-4,-4) with active value 3. + tree.fill(openvdb::CoordBBox(openvdb::Coord(-200), openvdb::Coord(-4)), 3.0f); + CPPUNIT_ASSERT(tree.hasActiveTiles()); +} diff --git a/openvdb/unittest/TestTreeIterators.cc b/openvdb/unittest/TestTreeIterators.cc new file mode 100644 index 00000000..6fd1e5a9 --- /dev/null +++ b/openvdb/unittest/TestTreeIterators.cc @@ -0,0 +1,582 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include // for tools::createLevelSetSphere() + + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0) + + +class TestTreeIterators: public CppUnit::TestCase +{ +public: + virtual void setUp() { openvdb::initialize(); } + virtual void tearDown() { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestTreeIterators); + CPPUNIT_TEST(testLeafIterator); + CPPUNIT_TEST(testEmptyLeafIterator); + CPPUNIT_TEST(testOnlyNegative); + CPPUNIT_TEST(testValueAllIterator); + CPPUNIT_TEST(testValueOnIterator); + CPPUNIT_TEST(testValueOffIterator); + CPPUNIT_TEST(testModifyValue); + CPPUNIT_TEST(testDepthBounds); + CPPUNIT_TEST_SUITE_END(); + + void testLeafIterator(); + void testEmptyLeafIterator(); + void testOnlyNegative(); + void testValueAllIterator(); + void testValueOnIterator(); + void testValueOffIterator(); + void testModifyValue(); + void testDepthBounds(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTreeIterators); + + +typedef openvdb::FloatTree TreeType; + + +void +TestTreeIterators::testLeafIterator() +{ + const float fillValue = 256.0f; + + TreeType tree(fillValue); + + tree.setValue(openvdb::Coord(0, 0, 0), 1.0); + tree.setValue(openvdb::Coord(1, 0, 0), 1.5); + tree.setValue(openvdb::Coord(0, 0, 8), 2.0); + tree.setValue(openvdb::Coord(1, 0, 8), 2.5); + tree.setValue(openvdb::Coord(0, 0, 16), 3.0); + tree.setValue(openvdb::Coord(1, 0, 16), 3.5); + tree.setValue(openvdb::Coord(0, 0, 24), 4.0); + tree.setValue(openvdb::Coord(1, 0, 24), 4.5); + + float val = 1.f; + for (TreeType::LeafCIter iter = tree.cbeginLeaf(); iter; ++iter) { + const TreeType::LeafNodeType* leaf = iter.getLeaf(); + CPPUNIT_ASSERT(leaf != NULL); + ASSERT_DOUBLES_EXACTLY_EQUAL(val, leaf->getValue(openvdb::Coord(0, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(val + 0.5, iter->getValue(openvdb::Coord(1, 0, 0))); + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue, iter->getValue(openvdb::Coord(1, 1, 1))); + val = val + 1.f; + } +} + + +// Test the leaf iterator over a tree without any leaf nodes. +void +TestTreeIterators::testEmptyLeafIterator() +{ + using namespace openvdb; + + TreeType tree(/*fillValue=*/256.0); + + std::vector dims; + tree.getNodeLog2Dims(dims); + CPPUNIT_ASSERT_EQUAL(4, int(dims.size())); + + // Start with an iterator over an empty tree. + TreeType::LeafCIter iter = tree.cbeginLeaf(); + CPPUNIT_ASSERT(!iter); + + // Using sparse fill, add internal nodes but no leaf nodes to the tree. + + // Fill the region subsumed by a level-2 internal node (assuming a four-level tree). + Index log2Sum = dims[1] + dims[2] + dims[3]; + CoordBBox bbox(Coord(0), Coord((1 << log2Sum) - 1)); + tree.fill(bbox, /*value=*/1.0); + iter = tree.cbeginLeaf(); + CPPUNIT_ASSERT(!iter); + + // Fill the region subsumed by a level-1 internal node. + log2Sum = dims[2] + dims[3]; + bbox.reset(Coord(0), Coord((1 << log2Sum) - 1)); + tree.fill(bbox, /*value=*/2.0); + iter = tree.cbeginLeaf(); + CPPUNIT_ASSERT(!iter); +} + + +void +TestTreeIterators::testOnlyNegative() +{ + using openvdb::Index64; + + const float fillValue = 5.0f; + + TreeType tree(fillValue); + + CPPUNIT_ASSERT(tree.empty()); + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue, tree.getValue(openvdb::Coord(5, -10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(fillValue, tree.getValue(openvdb::Coord(-500, 200, 300))); + + tree.setValue(openvdb::Coord(-5, 10, 20), 0.1f); + tree.setValue(openvdb::Coord( 5, -10, 20), 0.2f); + tree.setValue(openvdb::Coord( 5, 10, -20), 0.3f); + tree.setValue(openvdb::Coord(-5, -10, 20), 0.4f); + tree.setValue(openvdb::Coord(-5, 10, -20), 0.5f); + tree.setValue(openvdb::Coord( 5, -10, -20), 0.6f); + tree.setValue(openvdb::Coord(-5, -10, -20), 0.7f); + tree.setValue(openvdb::Coord(-500, 200, -300), 4.5678f); + tree.setValue(openvdb::Coord( 500, -200, -300), 4.5678f); + tree.setValue(openvdb::Coord(-500, -200, 300), 4.5678f); + + ASSERT_DOUBLES_EXACTLY_EQUAL(0.1f, tree.getValue(openvdb::Coord(-5, 10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.2f, tree.getValue(openvdb::Coord( 5, -10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.3f, tree.getValue(openvdb::Coord( 5, 10, -20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.4f, tree.getValue(openvdb::Coord(-5, -10, 20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.5f, tree.getValue(openvdb::Coord(-5, 10, -20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.6f, tree.getValue(openvdb::Coord( 5, -10, -20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.7f, tree.getValue(openvdb::Coord(-5, -10, -20))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord(-500, 200, -300))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord( 500, -200, -300))); + ASSERT_DOUBLES_EXACTLY_EQUAL(4.5678f, tree.getValue(openvdb::Coord(-500, -200, 300))); + + int count = 0; + for (int i = -25; i < 25; ++i) { + for (int j = -25; j < 25; ++j) { + for (int k = -25; k < 25; ++k) { + if (tree.getValue(openvdb::Coord(i, j, k)) < 1.0f) { + //fprintf(stderr, "(%i, %i, %i) = %f\n", + // i, j, k, tree.getValue(openvdb::Coord(i, j, k))); + ++count; + } + } + } + } + CPPUNIT_ASSERT_EQUAL(7, count); + + openvdb::Coord xyz; + int count2 = 0; + for (TreeType::ValueOnCIter iter = tree.cbeginValueOn();iter; ++iter) { + ++count2; + xyz = iter.getCoord(); + //std::cerr << xyz << " = " << *iter << "\n"; + } + CPPUNIT_ASSERT_EQUAL(10, count2); + CPPUNIT_ASSERT_EQUAL(Index64(10), tree.activeVoxelCount()); +} + + +void +TestTreeIterators::testValueAllIterator() +{ + const openvdb::Index DIM0 = 3, DIM1 = 2, DIM2 = 3; + + typedef openvdb::tree::Tree4::Type Tree323f; + + typedef Tree323f::RootNodeType RootT; + typedef RootT::ChildNodeType Int1T; + typedef Int1T::ChildNodeType Int2T; + typedef Int2T::ChildNodeType LeafT; + + Tree323f tree(/*fillValue=*/256.0f); + tree.setValue(openvdb::Coord(4), 0.0f); + tree.setValue(openvdb::Coord(-4), -1.0f); + + const size_t expectedNumOff = + 2 * ((1 << (3 * DIM2)) - 1) // 2 8x8x8 InternalNodes - 1 child pointer each + + 2 * ((1 << (3 * DIM1)) - 1) // 2 4x4x4 InternalNodes - 1 child pointer each + + 2 * ((1 << (3 * DIM0)) - 1); // 2 8x8x8 LeafNodes - 1 active value each + + { + Tree323f::ValueAllIter iter = tree.beginValueAll(); + CPPUNIT_ASSERT(iter.test()); + + // Read all tile and voxel values through a non-const value iterator. + size_t numOn = 0, numOff = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(iter.getLevel() <= 3); + const openvdb::Index iterLevel = iter.getLevel(); + for (openvdb::Index lvl = 0; lvl <= 3; ++lvl) { + RootT* root; Int1T* int1; Int2T* int2; LeafT* leaf; + iter.getNode(root); CPPUNIT_ASSERT(root != NULL); + iter.getNode(int1); CPPUNIT_ASSERT(iterLevel < 3 ? int1 != NULL: int1 == NULL); + iter.getNode(int2); CPPUNIT_ASSERT(iterLevel < 2 ? int2 != NULL: int2 == NULL); + iter.getNode(leaf); CPPUNIT_ASSERT(iterLevel < 1 ? leaf != NULL: leaf == NULL); + } + + if (iter.isValueOn()) { + ++numOn; + const float f = iter.getValue(); + if (openvdb::math::isZero(f)) { + CPPUNIT_ASSERT(iter.getCoord() == openvdb::Coord(4)); + CPPUNIT_ASSERT(iter.isVoxelValue()); + } else { + ASSERT_DOUBLES_EXACTLY_EQUAL(-1.0f, f); + CPPUNIT_ASSERT(iter.getCoord() == openvdb::Coord(-4)); + CPPUNIT_ASSERT(iter.isVoxelValue()); + } + } else { + ++numOff; + + // For every tenth inactive value, check that the size of + // the tile or voxel is as expected. + if (numOff % 10 == 0) { + const int dim[4] = { + 1, 1 << DIM0, 1 << (DIM1 + DIM0), 1 << (DIM2 + DIM1 + DIM0) + }; + const int lvl = iter.getLevel(); + CPPUNIT_ASSERT(lvl < 4); + openvdb::CoordBBox bbox; + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL( + bbox.extents(), openvdb::Coord(dim[lvl], dim[lvl], dim[lvl])); + } + } + } + CPPUNIT_ASSERT_EQUAL(2, int(numOn)); + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } + { + Tree323f::ValueAllCIter iter = tree.cbeginValueAll(); + CPPUNIT_ASSERT(iter.test()); + + // Read all tile and voxel values through a const value iterator. + size_t numOn = 0, numOff = 0; + for ( ; iter.test(); iter.next()) { + if (iter.isValueOn()) ++numOn; else ++numOff; + } + CPPUNIT_ASSERT_EQUAL(2, int(numOn)); + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } + { + Tree323f::ValueAllIter iter = tree.beginValueAll(); + CPPUNIT_ASSERT(iter.test()); + + // Read all tile and voxel values through a non-const value iterator + // and overwrite all active values. + size_t numOn = 0, numOff = 0; + for ( ; iter; ++iter) { + if (iter.isValueOn()) { + iter.setValue(iter.getValue() - 5); + ++numOn; + } else { + ++numOff; + } + } + CPPUNIT_ASSERT_EQUAL(2, int(numOn)); + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } +} + + +void +TestTreeIterators::testValueOnIterator() +{ + typedef openvdb::tree::Tree4::Type Tree323f; + + Tree323f tree(/*fillValue=*/256.0f); + + { + Tree323f::ValueOnIter iter = tree.beginValueOn(); + CPPUNIT_ASSERT(!iter.test()); // empty tree + } + + const int STEP = 8/*100*/, NUM_STEPS = 10; + for (int i = 0; i < NUM_STEPS; ++i) { + tree.setValue(openvdb::Coord(STEP * i), 0.0f); + } + + { + Tree323f::ValueOnIter iter = tree.beginValueOn(); + CPPUNIT_ASSERT(iter.test()); + + // Read all active tile and voxel values through a non-const value iterator. + int numOn = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(iter.isVoxelValue()); + CPPUNIT_ASSERT(iter.isValueOn()); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.0f, iter.getValue()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(STEP * numOn), iter.getCoord()); + ++numOn; + } + CPPUNIT_ASSERT_EQUAL(NUM_STEPS, numOn); + } + { + Tree323f::ValueOnCIter iter = tree.cbeginValueOn(); + CPPUNIT_ASSERT(iter.test()); + + // Read all active tile and voxel values through a const value iterator. + int numOn = 0; + for ( ; iter.test(); iter.next()) { + CPPUNIT_ASSERT(iter.isVoxelValue()); + CPPUNIT_ASSERT(iter.isValueOn()); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.0f, iter.getValue()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(STEP * numOn), iter.getCoord()); + ++numOn; + } + CPPUNIT_ASSERT_EQUAL(NUM_STEPS, numOn); + } + { + Tree323f::ValueOnIter iter = tree.beginValueOn(); + CPPUNIT_ASSERT(iter.test()); + + // Read all active tile and voxel values through a non-const value iterator + // and overwrite the values. + int numOn = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(iter.isVoxelValue()); + CPPUNIT_ASSERT(iter.isValueOn()); + ASSERT_DOUBLES_EXACTLY_EQUAL(0.0f, iter.getValue()); + iter.setValue(5.0f); + ASSERT_DOUBLES_EXACTLY_EQUAL(5.0f, iter.getValue()); + CPPUNIT_ASSERT_EQUAL(openvdb::Coord(STEP * numOn), iter.getCoord()); + ++numOn; + } + CPPUNIT_ASSERT_EQUAL(NUM_STEPS, numOn); + } +} + + +void +TestTreeIterators::testValueOffIterator() +{ + const openvdb::Index DIM0 = 3, DIM1 = 2, DIM2 = 3; + + typedef openvdb::tree::Tree4::Type Tree323f; + + Tree323f tree(/*fillValue=*/256.0f); + tree.setValue(openvdb::Coord(4), 0.0f); + tree.setValue(openvdb::Coord(-4), -1.0f); + + const size_t expectedNumOff = + 2 * ((1 << (3 * DIM2)) - 1) // 2 8x8x8 InternalNodes - 1 child pointer each + + 2 * ((1 << (3 * DIM1)) - 1) // 2 4x4x4 InternalNodes - 1 child pointer each + + 2 * ((1 << (3 * DIM0)) - 1); // 2 8x8x8 LeafNodes - 1 active value each + + { + Tree323f::ValueOffIter iter = tree.beginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + // Read all inactive tile and voxel values through a non-const value iterator. + size_t numOff = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(!iter.isValueOn()); + ++numOff; + // For every tenth inactive value, check that the size of + // the tile or voxel is as expected. + if (numOff % 10 == 0) { + const int dim[4] = { + 1, 1 << DIM0, 1 << (DIM1 + DIM0), 1 << (DIM2 + DIM1 + DIM0) + }; + const int lvl = iter.getLevel(); + CPPUNIT_ASSERT(lvl < 4); + openvdb::CoordBBox bbox; + iter.getBoundingBox(bbox); + CPPUNIT_ASSERT_EQUAL(bbox.extents(), openvdb::Coord(dim[lvl], dim[lvl], dim[lvl])); + } + } + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } + { + Tree323f::ValueOffCIter iter = tree.cbeginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + // Read all inactive tile and voxel values through a const value iterator. + size_t numOff = 0; + for ( ; iter.test(); iter.next(), ++numOff) { + CPPUNIT_ASSERT(!iter.isValueOn()); + } + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } + { + Tree323f::ValueOffIter iter = tree.beginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + // Read all inactive tile and voxel values through a non-const value iterator + // and overwrite the values. + size_t numOff = 0; + for ( ; iter; ++iter, ++numOff) { + iter.setValue(iter.getValue() - 5); + iter.setValueOff(); + } + for (iter = tree.beginValueOff(); iter; ++iter, --numOff); + CPPUNIT_ASSERT_EQUAL(size_t(0), numOff); + } +} + + +void +TestTreeIterators::testModifyValue() +{ + using openvdb::Coord; + + const openvdb::Index DIM0 = 3, DIM1 = 2, DIM2 = 3; + { + typedef openvdb::tree::Tree4::Type IntTree323f; + + IntTree323f tree(/*background=*/256); + tree.addTile(/*level=*/3, Coord(-1), /*value=*/ 4, /*active=*/true); + tree.addTile(/*level=*/2, Coord(1 << (DIM0 + DIM1)), /*value=*/-3, /*active=*/true); + tree.addTile(/*level=*/1, Coord(1 << DIM0), /*value=*/ 2, /*active=*/true); + tree.addTile(/*level=*/0, Coord(0), /*value=*/-1, /*active=*/true); + + struct Local { static inline void negate(int32_t& n) { n = -n; } }; + + for (IntTree323f::ValueAllIter iter = tree.beginValueAll(); iter; ++iter) { + iter.modifyValue(Local::negate); + } + + for (IntTree323f::ValueAllCIter iter = tree.cbeginValueAll(); iter; ++iter) { + const int32_t val = *iter; + if (val < 0) CPPUNIT_ASSERT((-val) % 2 == 0); // negative values are even + else CPPUNIT_ASSERT(val % 2 == 1); // positive values are odd + } + + // Because modifying values through a const iterator is not allowed, + // uncommenting the following line should result in a static assertion failure: + //tree.cbeginValueOn().modifyValue(Local::negate); + } + { + typedef openvdb::tree::Tree4::Type BoolTree323f; + + BoolTree323f tree; + tree.addTile(/*level=*/3, Coord(-1), /*value=*/false, /*active=*/true); + tree.addTile(/*level=*/2, Coord(1 << (DIM0 + DIM1)), /*value=*/ true, /*active=*/true); + tree.addTile(/*level=*/1, Coord(1 << DIM0), /*value=*/false, /*active=*/true); + tree.addTile(/*level=*/0, Coord(0), /*value=*/ true, /*active=*/true); + + struct Local { static inline void negate(bool& b) { b = !b; } }; + + for (BoolTree323f::ValueAllIter iter = tree.beginValueAll(); iter; ++iter) { + iter.modifyValue(Local::negate); + } + + CPPUNIT_ASSERT(!tree.getValue(Coord(0))); + CPPUNIT_ASSERT( tree.getValue(Coord(1 << DIM0))); + CPPUNIT_ASSERT(!tree.getValue(Coord(1 << (DIM0 + DIM1)))); + CPPUNIT_ASSERT( tree.getValue(Coord(-1))); + + // Because modifying values through a const iterator is not allowed, + // uncommenting the following line should result in a static assertion failure: + //tree.cbeginValueOn().modifyValue(Local::negate); + } + { + typedef openvdb::tree::Tree4::Type StringTree323f; + + StringTree323f tree(/*background=*/""); + tree.addTile(/*level=*/3, Coord(-1), /*value=*/"abc", /*active=*/true); + tree.addTile(/*level=*/2, Coord(1 << (DIM0 + DIM1)), /*value=*/"abc", /*active=*/true); + tree.addTile(/*level=*/1, Coord(1 << DIM0), /*value=*/"abc", /*active=*/true); + tree.addTile(/*level=*/0, Coord(0), /*value=*/"abc", /*active=*/true); + + struct Local { static inline void op(std::string& s) { s.append("def"); } }; + + for (StringTree323f::ValueOnIter iter = tree.beginValueOn(); iter; ++iter) { + iter.modifyValue(Local::op); + } + + const std::string expectedVal("abcdef"); + for (StringTree323f::ValueOnCIter iter = tree.cbeginValueOn(); iter; ++iter) { + CPPUNIT_ASSERT_EQUAL(expectedVal, *iter); + } + for (StringTree323f::ValueOffCIter iter = tree.cbeginValueOff(); iter; ++iter) { + CPPUNIT_ASSERT((*iter).empty()); + } + } +} + + +void +TestTreeIterators::testDepthBounds() +{ + const openvdb::Index DIM0 = 3, DIM1 = 2, DIM2 = 3; + + typedef openvdb::tree::Tree4::Type Tree323f; + + Tree323f tree(/*fillValue=*/256.0f); + tree.setValue(openvdb::Coord(4), 0.0f); + tree.setValue(openvdb::Coord(-4), -1.0f); + + const size_t + numDepth1 = 2 * ((1 << (3 * DIM2)) - 1), // 2 8x8x8 InternalNodes - 1 child pointer each + numDepth2 = 2 * ((1 << (3 * DIM1)) - 1), // 2 4x4x4 InternalNodes - 1 child pointer each + numDepth3 = 2 * ((1 << (3 * DIM0)) - 1), // 2 8x8x8 LeafNodes - 1 active value each + expectedNumOff = numDepth1 + numDepth2 + numDepth3; + + { + Tree323f::ValueOffCIter iter = tree.cbeginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + // Read all inactive tile and voxel values through a non-const value iterator. + size_t numOff = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(!iter.isValueOn()); + ++numOff; + } + CPPUNIT_ASSERT_EQUAL(expectedNumOff, numOff); + } + { + // Repeat, setting the minimum iterator depth to 2. + Tree323f::ValueOffCIter iter = tree.cbeginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + iter.setMinDepth(2); + CPPUNIT_ASSERT(iter.test()); + + size_t numOff = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(!iter.isValueOn()); + ++numOff; + const int depth = iter.getDepth(); + CPPUNIT_ASSERT(depth > 1); + } + CPPUNIT_ASSERT_EQUAL(expectedNumOff - numDepth1, numOff); + } + { + // Repeat, setting the minimum and maximum depths to 2. + Tree323f::ValueOffCIter iter = tree.cbeginValueOff(); + CPPUNIT_ASSERT(iter.test()); + + iter.setMinDepth(2); + CPPUNIT_ASSERT(iter.test()); + + iter.setMaxDepth(2); + CPPUNIT_ASSERT(iter.test()); + + size_t numOff = 0; + for ( ; iter; ++iter) { + CPPUNIT_ASSERT(!iter.isValueOn()); + ++numOff; + const int depth = iter.getDepth(); + CPPUNIT_ASSERT_EQUAL(2, depth); + } + CPPUNIT_ASSERT_EQUAL(expectedNumOff - numDepth1 - numDepth3, numOff); + } + { + // FX-7884 regression test + using namespace openvdb; + + const float radius = 4.3f, voxelSize = 0.1f, width = 2.0f; + const Vec3f center(15.8f, 13.2f, 16.7f); + FloatGrid::Ptr sphereGrid = tools::createLevelSetSphere( + radius, center, voxelSize, width); + const FloatTree& sphereTree = sphereGrid->tree(); + + FloatGrid::ValueOffIter iter = sphereGrid->beginValueOff(); + iter.setMaxDepth(2); + for ( ; iter; ++iter) { + const Coord ijk = iter.getCoord(); + ASSERT_DOUBLES_EXACTLY_EQUAL(sphereTree.getValue(ijk), *iter); + } + } + { + // FX-10221 regression test + // This code generated an infinite loop in OpenVDB 5.1.0 and earlier: + openvdb::FloatTree emptyTree; + auto iter = emptyTree.cbeginValueAll(); + iter.setMinDepth(2); + CPPUNIT_ASSERT(!iter); + } +} diff --git a/openvdb/unittest/TestTreeVisitor.cc b/openvdb/unittest/TestTreeVisitor.cc new file mode 100644 index 00000000..b9a8af27 --- /dev/null +++ b/openvdb/unittest/TestTreeVisitor.cc @@ -0,0 +1,344 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file TestTreeVisitor.h +/// +/// @author Peter Cucka + +#include +#include +#include +#include +#include +#include +#include + + +class TestTreeVisitor: public CppUnit::TestCase +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestTreeVisitor); + CPPUNIT_TEST(testVisitTreeBool); + CPPUNIT_TEST(testVisitTreeInt32); + CPPUNIT_TEST(testVisitTreeFloat); + CPPUNIT_TEST(testVisitTreeVec2I); + CPPUNIT_TEST(testVisitTreeVec3S); + CPPUNIT_TEST(testVisit2Trees); + CPPUNIT_TEST_SUITE_END(); + + void testVisitTreeBool() { visitTree(); } + void testVisitTreeInt32() { visitTree(); } + void testVisitTreeFloat() { visitTree(); } + void testVisitTreeVec2I() { visitTree(); } + void testVisitTreeVec3S() { visitTree(); } + void testVisit2Trees(); + +private: + template TreeT createTestTree() const; + template void visitTree(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTreeVisitor); + + +//////////////////////////////////////// + + +template +TreeT +TestTreeVisitor::createTestTree() const +{ + using ValueT = typename TreeT::ValueType; + const ValueT zero = openvdb::zeroVal(), one = zero + 1; + + // Create a sparse test tree comprising the eight corners of + // a 200 x 200 x 200 cube. + TreeT tree(/*background=*/one); + tree.setValue(openvdb::Coord( 0, 0, 0), /*value=*/zero); + tree.setValue(openvdb::Coord(200, 0, 0), zero); + tree.setValue(openvdb::Coord( 0, 200, 0), zero); + tree.setValue(openvdb::Coord( 0, 0, 200), zero); + tree.setValue(openvdb::Coord(200, 0, 200), zero); + tree.setValue(openvdb::Coord( 0, 200, 200), zero); + tree.setValue(openvdb::Coord(200, 200, 0), zero); + tree.setValue(openvdb::Coord(200, 200, 200), zero); + + // Verify that the bounding box of all On values is 200 x 200 x 200. + openvdb::CoordBBox bbox; + CPPUNIT_ASSERT(tree.evalActiveVoxelBoundingBox(bbox)); + CPPUNIT_ASSERT(bbox.min() == openvdb::Coord(0, 0, 0)); + CPPUNIT_ASSERT(bbox.max() == openvdb::Coord(200, 200, 200)); + + return tree; +} + + +//////////////////////////////////////// + + +namespace { + +/// Single-tree visitor that accumulates node counts +class Visitor +{ +public: + using NodeMap = std::map >; + + Visitor(): mSkipLeafNodes(false) { reset(); } + + void reset() + { + mSkipLeafNodes = false; + mNodes.clear(); + mNonConstIterUseCount = mConstIterUseCount = 0; + } + + void setSkipLeafNodes(bool b) { mSkipLeafNodes = b; } + + template + bool operator()(IterT& iter) + { + incrementIterUseCount(std::is_const::value); + CPPUNIT_ASSERT(iter.getParentNode() != nullptr); + + if (mSkipLeafNodes && iter.parent().getLevel() == 1) return true; + + using ValueT = typename IterT::NonConstValueType; + using ChildT = typename IterT::ChildNodeType; + ValueT value; + if (const ChildT* child = iter.probeChild(value)) { + insertChild(child); + } + return false; + } + + openvdb::Index leafCount() const + { + NodeMap::const_iterator it = mNodes.find(0); + return openvdb::Index((it != mNodes.end()) ? it->second.size() : 0); + } + openvdb::Index nonLeafCount() const + { + openvdb::Index count = 1; // root node + for (NodeMap::const_iterator i = mNodes.begin(), e = mNodes.end(); i != e; ++i) { + if (i->first != 0) count = openvdb::Index(count + i->second.size()); + } + return count; + } + + bool usedOnlyConstIterators() const + { + return (mConstIterUseCount > 0 && mNonConstIterUseCount == 0); + } + bool usedOnlyNonConstIterators() const + { + return (mConstIterUseCount == 0 && mNonConstIterUseCount > 0); + } + +private: + template + void insertChild(const ChildT* child) + { + if (child != nullptr) { + const openvdb::Index level = child->getLevel(); + if (!mSkipLeafNodes || level > 0) { + mNodes[level].insert(child); + } + } + } + + void incrementIterUseCount(bool isConst) + { + if (isConst) ++mConstIterUseCount; else ++mNonConstIterUseCount; + } + + bool mSkipLeafNodes; + NodeMap mNodes; + int mNonConstIterUseCount, mConstIterUseCount; +}; + +/// Specialization for LeafNode iterators, whose ChildNodeType is void +/// (therefore can't call child->getLevel()) +template<> inline void Visitor::insertChild(const void*) {} + +} // unnamed namespace + + +template +void +TestTreeVisitor::visitTree() +{ + TreeT tree = createTestTree(); + { + // Traverse the tree, accumulating node counts. + Visitor visitor; + const_cast(tree).visit(visitor); + + CPPUNIT_ASSERT(visitor.usedOnlyConstIterators()); + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.leafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.nonLeafCount()); + } + { + // Traverse the tree, accumulating node counts as above, + // but using non-const iterators. + Visitor visitor; + tree.visit(visitor); + + CPPUNIT_ASSERT(visitor.usedOnlyNonConstIterators()); + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.leafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.nonLeafCount()); + } + { + // Traverse the tree, accumulating counts of non-leaf nodes only. + Visitor visitor; + visitor.setSkipLeafNodes(true); + const_cast(tree).visit(visitor); + + CPPUNIT_ASSERT(visitor.usedOnlyConstIterators()); + CPPUNIT_ASSERT_EQUAL(0U, visitor.leafCount()); // leaf nodes were skipped + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.nonLeafCount()); + } +} + + +//////////////////////////////////////// + + +namespace { + +/// Two-tree visitor that accumulates node counts +class Visitor2 +{ +public: + using NodeMap = std::map >; + + Visitor2() { reset(); } + + void reset() + { + mSkipALeafNodes = mSkipBLeafNodes = false; + mANodeCount.clear(); + mBNodeCount.clear(); + } + + void setSkipALeafNodes(bool b) { mSkipALeafNodes = b; } + void setSkipBLeafNodes(bool b) { mSkipBLeafNodes = b; } + + openvdb::Index aLeafCount() const { return leafCount(/*useA=*/true); } + openvdb::Index bLeafCount() const { return leafCount(/*useA=*/false); } + openvdb::Index aNonLeafCount() const { return nonLeafCount(/*useA=*/true); } + openvdb::Index bNonLeafCount() const { return nonLeafCount(/*useA=*/false); } + + template + int operator()(AIterT& aIter, BIterT& bIter) + { + CPPUNIT_ASSERT(aIter.getParentNode() != nullptr); + CPPUNIT_ASSERT(bIter.getParentNode() != nullptr); + + typename AIterT::NodeType& aNode = aIter.parent(); + typename BIterT::NodeType& bNode = bIter.parent(); + + const openvdb::Index aLevel = aNode.getLevel(), bLevel = bNode.getLevel(); + mANodeCount[aLevel].insert(&aNode); + mBNodeCount[bLevel].insert(&bNode); + + int skipBranch = 0; + if (aLevel == 1 && mSkipALeafNodes) skipBranch = (skipBranch | 1); + if (bLevel == 1 && mSkipBLeafNodes) skipBranch = (skipBranch | 2); + return skipBranch; + } + +private: + openvdb::Index leafCount(bool useA) const + { + const NodeMap& theMap = (useA ? mANodeCount : mBNodeCount); + NodeMap::const_iterator it = theMap.find(0); + if (it != theMap.end()) return openvdb::Index(it->second.size()); + return 0; + } + openvdb::Index nonLeafCount(bool useA) const + { + openvdb::Index count = 0; + const NodeMap& theMap = (useA ? mANodeCount : mBNodeCount); + for (NodeMap::const_iterator i = theMap.begin(), e = theMap.end(); i != e; ++i) { + if (i->first != 0) count = openvdb::Index(count + i->second.size()); + } + return count; + } + + bool mSkipALeafNodes, mSkipBLeafNodes; + NodeMap mANodeCount, mBNodeCount; +}; + +} // unnamed namespace + + +void +TestTreeVisitor::testVisit2Trees() +{ + using TreeT = openvdb::FloatTree; + using Tree2T = openvdb::VectorTree; + using ValueT = TreeT::ValueType; + + // Create a test tree. + TreeT tree = createTestTree(); + // Create another test tree of a different type but with the same topology. + Tree2T tree2 = createTestTree(); + + // Traverse both trees. + Visitor2 visitor; + tree.visit2(tree2, visitor); + + //CPPUNIT_ASSERT(visitor.usedOnlyConstIterators()); + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.aLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), visitor.bLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.aNonLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.nonLeafCount(), visitor.bNonLeafCount()); + + visitor.reset(); + + // Change the topology of the first tree. + tree.setValue(openvdb::Coord(-200, -200, -200), openvdb::zeroVal()); + + // Traverse both trees. + tree.visit2(tree2, visitor); + + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.aLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), visitor.bLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.aNonLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.nonLeafCount(), visitor.bNonLeafCount()); + + visitor.reset(); + + // Traverse the two trees in the opposite order. + tree2.visit2(tree, visitor); + + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), visitor.aLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.bLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.nonLeafCount(), visitor.aNonLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.bNonLeafCount()); + + // Repeat, skipping leaf nodes of tree2. + visitor.reset(); + visitor.setSkipALeafNodes(true); + tree2.visit2(tree, visitor); + + CPPUNIT_ASSERT_EQUAL(0U, visitor.aLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.leafCount(), visitor.bLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.nonLeafCount(), visitor.aNonLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.bNonLeafCount()); + + // Repeat, skipping leaf nodes of tree. + visitor.reset(); + visitor.setSkipBLeafNodes(true); + tree2.visit2(tree, visitor); + + CPPUNIT_ASSERT_EQUAL(tree2.leafCount(), visitor.aLeafCount()); + CPPUNIT_ASSERT_EQUAL(0U, visitor.bLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree2.nonLeafCount(), visitor.aNonLeafCount()); + CPPUNIT_ASSERT_EQUAL(tree.nonLeafCount(), visitor.bNonLeafCount()); +} diff --git a/openvdb/unittest/TestTypes.cc b/openvdb/unittest/TestTypes.cc new file mode 100644 index 00000000..f8bc271c --- /dev/null +++ b/openvdb/unittest/TestTypes.cc @@ -0,0 +1,468 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include // for std::ref() +#include + + +using namespace openvdb; + +class TestTypes: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestTypes); + CPPUNIT_TEST(testVecTraits); + CPPUNIT_TEST(testQuatTraits); + CPPUNIT_TEST(testMatTraits); + CPPUNIT_TEST(testValueTraits); + CPPUNIT_TEST(testTypeList); + CPPUNIT_TEST_SUITE_END(); + + void testVecTraits(); + void testQuatTraits(); + void testMatTraits(); + void testValueTraits(); + void testTypeList(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestTypes); + + +namespace { struct Dummy {}; } + + +void +TestTypes::testVecTraits() +{ + { // VecTraits - IsVec + + // standard types (Vec3s, etc) + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + + // some less common types (Vec3U16, etc) + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + CPPUNIT_ASSERT(VecTraits::IsVec); + + // some non-vector types + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + CPPUNIT_ASSERT(!VecTraits::IsVec); + } + + { // VecTraits - Size + + // standard types (Vec3s, etc) + CPPUNIT_ASSERT(VecTraits::Size == 3); + CPPUNIT_ASSERT(VecTraits::Size == 3); + CPPUNIT_ASSERT(VecTraits::Size == 3); + CPPUNIT_ASSERT(VecTraits::Size == 2); + CPPUNIT_ASSERT(VecTraits::Size == 2); + CPPUNIT_ASSERT(VecTraits::Size == 2); + CPPUNIT_ASSERT(VecTraits::Size == 4); + CPPUNIT_ASSERT(VecTraits::Size == 4); + CPPUNIT_ASSERT(VecTraits::Size == 4); + + // some less common types (Vec3U16, etc) + CPPUNIT_ASSERT(VecTraits::Size == 2); + CPPUNIT_ASSERT(VecTraits::Size == 3); + CPPUNIT_ASSERT(VecTraits::Size == 4); + + // some non-vector types + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + CPPUNIT_ASSERT(VecTraits::Size == 1); + } + + { // VecTraits - ElementType + + // standard types (Vec3s, etc) + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + + // some less common types (Vec3U16, etc) + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, uint16_t>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, half>::value)); + + // some non-vector types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, bool>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Quats>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Mat4d>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, ValueMask>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Dummy>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Byte>::value)); + } +} + + +void +TestTypes::testQuatTraits() +{ + { // QuatTraits - IsQuat + + // standard types (Quats, etc) + CPPUNIT_ASSERT(QuatTraits::IsQuat); + CPPUNIT_ASSERT(QuatTraits::IsQuat); + + // some non-quaternion types + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + CPPUNIT_ASSERT(!QuatTraits::IsQuat); + } + + { // QuatTraits - Size + + // standard types (Quats, etc) + CPPUNIT_ASSERT(QuatTraits::Size == 4); + CPPUNIT_ASSERT(QuatTraits::Size == 4); + + // some non-quaternion types + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + CPPUNIT_ASSERT(QuatTraits::Size == 1); + } + + { // QuatTraits - ElementType + + // standard types (Quats, etc) + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + + // some non-matrix types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec3s>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec4d>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec2i>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec3U16>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, bool>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Mat4s>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, ValueMask>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Dummy>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Byte>::value)); + } +} + + +void +TestTypes::testMatTraits() +{ + { // MatTraits - IsMat + + // standard types (Mat4d, etc) + CPPUNIT_ASSERT(MatTraits::IsMat); + CPPUNIT_ASSERT(MatTraits::IsMat); + CPPUNIT_ASSERT(MatTraits::IsMat); + CPPUNIT_ASSERT(MatTraits::IsMat); + + // some non-matrix types + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + CPPUNIT_ASSERT(!MatTraits::IsMat); + } + + { // MatTraits - Size + + // standard types (Mat4d, etc) + CPPUNIT_ASSERT(MatTraits::Size == 3); + CPPUNIT_ASSERT(MatTraits::Size == 3); + CPPUNIT_ASSERT(MatTraits::Size == 4); + CPPUNIT_ASSERT(MatTraits::Size == 4); + + // some non-matrix types + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + CPPUNIT_ASSERT(MatTraits::Size == 1); + } + + { // MatTraits - ElementType + + // standard types (Mat4d, etc) + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + + // some non-matrix types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec3s>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec4d>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec2i>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Vec3U16>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, int>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, bool>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Quats>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, ValueMask>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Dummy>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Byte>::value)); + } +} + + +void +TestTypes::testValueTraits() +{ + { // ValueTraits - IsVec, IsQuat, IsMat, IsScalar + + // vector types + CPPUNIT_ASSERT(ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + CPPUNIT_ASSERT(ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + CPPUNIT_ASSERT(ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + + // quaternion types + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + + // matrix types + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(ValueTraits::IsMat); + CPPUNIT_ASSERT(!ValueTraits::IsScalar); + + // scalar types + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(ValueTraits::IsScalar); + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(ValueTraits::IsScalar); + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(ValueTraits::IsScalar); + CPPUNIT_ASSERT(!ValueTraits::IsVec); + CPPUNIT_ASSERT(!ValueTraits::IsQuat); + CPPUNIT_ASSERT(!ValueTraits::IsMat); + CPPUNIT_ASSERT(ValueTraits::IsScalar); + } + + { // ValueTraits - Size + + // vector types + CPPUNIT_ASSERT(ValueTraits::Size == 3); + CPPUNIT_ASSERT(ValueTraits::Size == 4); + CPPUNIT_ASSERT(ValueTraits::Size == 3); + + // quaternion types + CPPUNIT_ASSERT(ValueTraits::Size == 4); + CPPUNIT_ASSERT(ValueTraits::Size == 4); + + // matrix types + CPPUNIT_ASSERT(ValueTraits::Size == 3); + CPPUNIT_ASSERT(ValueTraits::Size == 4); + + // scalar types + CPPUNIT_ASSERT(ValueTraits::Size == 1); + CPPUNIT_ASSERT(ValueTraits::Size == 1); + CPPUNIT_ASSERT(ValueTraits::Size == 1); + CPPUNIT_ASSERT(ValueTraits::Size == 1); + } + + { // ValueTraits - Elements + + // vector types + CPPUNIT_ASSERT(ValueTraits::Elements == 3); + CPPUNIT_ASSERT(ValueTraits::Elements == 4); + CPPUNIT_ASSERT(ValueTraits::Elements == 3); + + // quaternion types + CPPUNIT_ASSERT(ValueTraits::Elements == 4); + CPPUNIT_ASSERT(ValueTraits::Elements == 4); + + // matrix types + CPPUNIT_ASSERT(ValueTraits::Elements == 3*3); + CPPUNIT_ASSERT(ValueTraits::Elements == 4*4); + + // scalar types + CPPUNIT_ASSERT(ValueTraits::Elements == 1); + CPPUNIT_ASSERT(ValueTraits::Elements == 1); + CPPUNIT_ASSERT(ValueTraits::Elements == 1); + CPPUNIT_ASSERT(ValueTraits::Elements == 1); + } + + { // ValueTraits - ElementType + + // vector types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, uint16_t>::value)); + + // quaternion types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + + // matrix types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, float>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + + // scalar types + CPPUNIT_ASSERT(bool(std::is_same::ElementType, double>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, bool>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, ValueMask>::value)); + CPPUNIT_ASSERT(bool(std::is_same::ElementType, Dummy>::value)); + } +} + + +//////////////////////////////////////// + + +namespace { + +template char typeCode() { return '.'; } +template<> char typeCode() { return 'b'; } +template<> char typeCode() { return 'c'; } +template<> char typeCode() { return 'd'; } +template<> char typeCode() { return 'f'; } +template<> char typeCode() { return 'i'; } +template<> char typeCode() { return 'l'; } + + +struct TypeCodeOp +{ + std::string codes; + template void operator()(const T&) { codes.push_back(typeCode()); } +}; + + +template +inline std::string +typeSetAsString() +{ + TypeCodeOp op; + TSet::foreach(std::ref(op)); + return op.codes; +} + +} // anonymous namespace + + +void +TestTypes::testTypeList() +{ + using T0 = TypeList<>; + CPPUNIT_ASSERT_EQUAL(std::string(), typeSetAsString()); + + using T1 = TypeList; + CPPUNIT_ASSERT_EQUAL(std::string("i"), typeSetAsString()); + + using T2 = TypeList; + CPPUNIT_ASSERT_EQUAL(std::string("f"), typeSetAsString()); + + using T3 = TypeList; + CPPUNIT_ASSERT_EQUAL(std::string("bd"), typeSetAsString()); + + using T4 = T1::Append; + CPPUNIT_ASSERT_EQUAL(std::string("if"), typeSetAsString()); + CPPUNIT_ASSERT_EQUAL(std::string("fi"), typeSetAsString>()); + + using T5 = T3::Append; + CPPUNIT_ASSERT_EQUAL(std::string("bdif"), typeSetAsString()); + + using T6 = T5::Append; + CPPUNIT_ASSERT_EQUAL(std::string("bdifbdif"), typeSetAsString()); + + using T7 = T5::Append; + CPPUNIT_ASSERT_EQUAL(std::string("bdifcl"), typeSetAsString()); + + using T8 = T5::Append::Append; + CPPUNIT_ASSERT_EQUAL(std::string("bdifcl"), typeSetAsString()); + + using T9 = T8::Remove>; + CPPUNIT_ASSERT_EQUAL(std::string("bdifcl"), typeSetAsString()); + + using T10 = T8::Remove; + CPPUNIT_ASSERT_EQUAL(std::string("bdifcl"), typeSetAsString()); + + using T11 = T8::Remove::Remove; + CPPUNIT_ASSERT_EQUAL(std::string("bdfl"), typeSetAsString()); + + using T12 = T8::Remove; + CPPUNIT_ASSERT_EQUAL(std::string("bdfl"), typeSetAsString()); + + using T13 = T8::Remove>; + CPPUNIT_ASSERT_EQUAL(std::string("bdfl"), typeSetAsString()); +} diff --git a/openvdb/unittest/TestUtil.cc b/openvdb/unittest/TestUtil.cc new file mode 100644 index 00000000..bb077a3b --- /dev/null +++ b/openvdb/unittest/TestUtil.cc @@ -0,0 +1,674 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include + +//#define BENCHMARK_PAGED_ARRAY + +// For benchmark comparisons +#ifdef BENCHMARK_PAGED_ARRAY +#include // for std::deque +#include // for std::vector +#include // for tbb::concurrent_vector +#endif + +class TestUtil: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestUtil); + CPPUNIT_TEST(testFormats); + CPPUNIT_TEST(testCpuTimer); + CPPUNIT_TEST(testPagedArray); + CPPUNIT_TEST(testPagedArrayPushBack); + CPPUNIT_TEST_SUITE_END(); + + void testCpuTimer(); + void testFormats(); + void testPagedArray(); + void testPagedArrayPushBack(); + + using RangeT = tbb::blocked_range; + + // Multi-threading ArrayT::push_back + template + struct ArrayPushBack { + ArrayPushBack(ArrayT& array) : mArray(&array) {} + void parallel(size_t size) {tbb::parallel_for(RangeT(size_t(0), size, mArray->pageSize()), *this);} + void serial(size_t size) { (*this)(RangeT(size_t(0), size)); } + void unsafe(size_t size) { for (size_t i=0; i!=size; ++i) mArray->push_back_unsafe(i); } + void operator()(const RangeT& r) const { + for (size_t i=r.begin(), n=r.end(); i!=n; ++i) mArray->push_back(i); + } + ArrayT* mArray; + }; + + // Multi-threading ArrayT::ValueBuffer::push_back + template + struct BufferPushBack { + BufferPushBack(ArrayT& array) : mBuffer(array) {} + void parallel(size_t size) { + tbb::parallel_for(RangeT(size_t(0), size, mBuffer.parent().pageSize()), *this); + } + void serial(size_t size) { (*this)(RangeT(size_t(0), size)); } + void operator()(const RangeT& r) const { + for (size_t i=r.begin(), n=r.end(); i!=n; ++i) mBuffer.push_back(i); + } + mutable typename ArrayT::ValueBuffer mBuffer;//local instance + }; + + // Thread Local Storage version of BufferPushBack + template + struct TLS_BufferPushBack { + using PoolT = tbb::enumerable_thread_specific; + TLS_BufferPushBack(ArrayT &array) : mArray(&array), mPool(nullptr) {} + void parallel(size_t size) { + typename ArrayT::ValueBuffer exemplar(*mArray);//dummy used for initialization + mPool = new PoolT(exemplar);//thread local storage pool of ValueBuffers + tbb::parallel_for(RangeT(size_t(0), size, mArray->pageSize()), *this); + for (auto i=mPool->begin(); i!=mPool->end(); ++i) i->flush(); + delete mPool; + } + void operator()(const RangeT& r) const { + typename PoolT::reference buffer = mPool->local(); + for (size_t i=r.begin(), n=r.end(); i!=n; ++i) buffer.push_back(i); + } + ArrayT *mArray; + PoolT *mPool; + }; +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestUtil); + +void +TestUtil::testFormats() +{ + {// TODO: add unit tests for printBytes + } + {// TODO: add a unit tests for printNumber + } + {// test long format printTime + const int width = 4, precision = 1, verbose = 1; + const int days = 1; + const int hours = 3; + const int minutes = 59; + const int seconds = 12; + const double milliseconds = 347.6; + const double mseconds = milliseconds + (seconds + (minutes + (hours + days*24)*60)*60)*1000.0; + std::ostringstream ostr1, ostr2; + CPPUNIT_ASSERT_EQUAL(4, openvdb::util::printTime(ostr2, mseconds, "Completed in ", "", width, precision, verbose )); + ostr1 << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + ostr1 << "Completed in " << days << " day, " << hours << " hours, " << minutes << " minutes, " + << seconds << " seconds and " << std::setw(width) << milliseconds << " milliseconds (" << mseconds << "ms)"; + //std::cerr << ostr2.str() << std::endl; + CPPUNIT_ASSERT_EQUAL(ostr1.str(), ostr2.str()); + } + {// test compact format printTime + const int width = 4, precision = 1, verbose = 0; + const int days = 1; + const int hours = 3; + const int minutes = 59; + const int seconds = 12; + const double milliseconds = 347.6; + const double mseconds = milliseconds + (seconds + (minutes + (hours + days*24)*60)*60)*1000.0; + std::ostringstream ostr1, ostr2; + CPPUNIT_ASSERT_EQUAL(4, openvdb::util::printTime(ostr2, mseconds, "Completed in ", "", width, precision, verbose )); + ostr1 << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + ostr1 << "Completed in " << days << "d " << hours << "h " << minutes << "m " + << std::setw(width) << (seconds + milliseconds/1000.0) << "s"; + //std::cerr << ostr2.str() << std::endl; + CPPUNIT_ASSERT_EQUAL(ostr1.str(), ostr2.str()); + } +} + +void +TestUtil::testCpuTimer() +{ + const int expected = 159, tolerance = 20;//milliseconds + const tbb::tick_count::interval_t sec(expected/1000.0); + { + openvdb::util::CpuTimer timer; + tbb::this_tbb_thread::sleep(sec); + const int actual1 = static_cast(timer.milliseconds()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(expected, actual1, tolerance); + tbb::this_tbb_thread::sleep(sec); + const int actual2 = static_cast(timer.milliseconds()); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2*expected, actual2, tolerance); + } + { + openvdb::util::CpuTimer timer; + tbb::this_tbb_thread::sleep(sec); + auto t1 = timer.restart(); + tbb::this_tbb_thread::sleep(sec); + tbb::this_tbb_thread::sleep(sec); + auto t2 = timer.restart(); + CPPUNIT_ASSERT_DOUBLES_EQUAL(2*t1, t2, tolerance); + } +} + +void +TestUtil::testPagedArrayPushBack() +{ +#ifdef BENCHMARK_PAGED_ARRAY + const size_t problemSize = 256000; + openvdb::util::CpuTimer timer; + std::cerr << "\nProblem size for benchmark: " << problemSize << std::endl; +#else + const size_t problemSize = 256000; +#endif + {//parallel PagedArray::push_back + using ArrayT = openvdb::util::PagedArray; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("3: Parallel PagedArray::push_back with default page size"); +#endif + {// for some reason this: + ArrayPushBack tmp(d); + tmp.parallel(problemSize); + }// is faster than: + //tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + // [&d](const tbb::blocked_range &range){ + // for (size_t i=range.begin(); i!=range.end(); ++i) d.push_back(i);}); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + CPPUNIT_ASSERT_EQUAL(size_t(10), d.log2PageSize()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort with a default page size"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0, n=d.size(); i> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + } +} + +void +TestUtil::testPagedArray() +{ +#ifdef BENCHMARK_PAGED_ARRAY + const size_t problemSize = 2560000; + openvdb::util::CpuTimer timer; + std::cerr << "\nProblem size for benchmark: " << problemSize << std::endl; +#else + const size_t problemSize = 256000; +#endif + + {//serial PagedArray::push_back (check return value) + openvdb::util::PagedArray d; + CPPUNIT_ASSERT(d.isEmpty()); + CPPUNIT_ASSERT_EQUAL(size_t(0), d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(8), d.log2PageSize()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("1: Serial PagedArray::push_back with default page size"); +#endif + {// for some reason this: + ArrayPushBack tmp(d); + tmp.serial(problemSize); + }// is faster than: + //for (size_t i=0; i> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + for (size_t i=0, n=d.size(); i; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("2: Serial PagedArray::push_back_unsafe with default page size"); +#endif + {// for some reason this: + ArrayPushBack tmp(d); + tmp.unsafe(problemSize); + }// is faster than: + //openvdb::util::PagedArray d; + //for (size_t i=0; i; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("3: Parallel PagedArray::push_back with default page size"); +#endif + //{// for some reason this: + // ArrayPushBack tmp(d); + // tmp.parallel(problemSize); + //}// is faster than: + tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + [&d](const tbb::blocked_range &range){ + for (size_t i=range.begin(); i!=range.end(); ++i) d.push_back(i);}); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + CPPUNIT_ASSERT_EQUAL(size_t(10), d.log2PageSize()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort with a default page size"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0, n=d.size(); i> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + + } + {//parallel PagedArray::push_back with page size of only 8 + using ArrayT = openvdb::util::PagedArray; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("4: Parallel PagedArray::push_back with page size of only 8"); +#endif + {// for some reason this: + ArrayPushBack tmp(d); + tmp.parallel(problemSize); + }// is faster than: + //tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + // [&d](const tbb::blocked_range &range){ + // for (size_t i=range.begin(); i!=range.end(); ++i) d.push_back(i);}); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + CPPUNIT_ASSERT_EQUAL(size_t(3), d.log2PageSize()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort with a page size of only 8"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0, n=d.size(); i> log2PageSize + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + } +#ifdef BENCHMARK_PAGED_ARRAY + {//benchmark against a std::vector + timer.start("5: Serial std::vector::push_back"); + std::vector v; + for (size_t i=0; i d; + for (size_t i=0; i d2; + CPPUNIT_ASSERT_EQUAL(size_t(0), d2.size()); + d2.resize(1234); + CPPUNIT_ASSERT_EQUAL(size_t(1234), d2.size()); + } + {//benchmark against a tbb::concurrent_vector::push_back + timer.start("7: Serial tbb::concurrent_vector::push_back"); + tbb::concurrent_vector v; + for (size_t i=0; i; + tbb::parallel_for(tbb::blocked_range(0, problemSize, ArrayT::pageSize()), + [&v](const tbb::blocked_range &range){ + for (size_t i=range.begin(); i!=range.end(); ++i) v.push_back(i);}); + timer.stop(); + tbb::parallel_sort(v.begin(), v.end()); + for (size_t i=0; i; + ArrayT d; + + CPPUNIT_ASSERT_EQUAL(size_t(0), d.size()); + d.resize(problemSize); + CPPUNIT_ASSERT_EQUAL(problemSize, d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<> log2PageSize + CPPUNIT_ASSERT_EQUAL((problemSize-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + d.clear(); + CPPUNIT_ASSERT_EQUAL(size_t(0), d.size()); +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("9: Serial PagedArray::ValueBuffer::push_back"); +#endif + {// for some reason this: + BufferPushBack tmp(d); + tmp.serial(problemSize); + // is faster than: + //ArrayT::ValueBuffer buffer(d); + //for (size_t i=0, n=problemSize; i>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + + } + {//parallel PagedArray::ValueBuffer::push_back + using ArrayT = openvdb::util::PagedArray; + ArrayT d; +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("10: Parallel PagedArray::ValueBuffer::push_back"); +#endif + {// for some reason this: + BufferPushBack tmp(d); + tmp.parallel(problemSize); + }// is faster than: + //tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + // [&d](const tbb::blocked_range &r){ + // typename ArrayT::ValueBuffer buffer(d); + // for (size_t i=r.begin(), n=r.end(); i!=n; ++i) buffer.push_back(i);}); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + + CPPUNIT_ASSERT_EQUAL(problemSize, d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + // Test sorting +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0; i> log2PageSize + CPPUNIT_ASSERT_EQUAL(size_t(1)+(problemSize>>d.log2PageSize()), d.pageCount()); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + // test PagedArray::fill + const size_t v = 13; + d.fill(v); + for (size_t i=0, n=d.capacity(); i; + ArrayT d; + CPPUNIT_ASSERT_EQUAL(size_t(0), d.size()); + { + ArrayT::ValueBuffer vc(d); + vc.push_back(1); + vc.push_back(2); + CPPUNIT_ASSERT_EQUAL(size_t(0), d.size()); + vc.flush(); + CPPUNIT_ASSERT_EQUAL(size_t(2), d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1), d[0]); + CPPUNIT_ASSERT_EQUAL(size_t(2), d[1]); + } + CPPUNIT_ASSERT_EQUAL(size_t(2), d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1), d[0]); + CPPUNIT_ASSERT_EQUAL(size_t(2), d[1]); + } + {//thread-local-storage PagedArray::ValueBuffer::push_back followed by parallel sort + using ArrayT = openvdb::util::PagedArray; + ArrayT d; + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("11: Parallel TLS PagedArray::ValueBuffer::push_back"); +#endif + {// for some reason this: + TLS_BufferPushBack tmp(d); + tmp.parallel(problemSize); + }// is faster than: + //ArrayT::ValueBuffer exemplar(d);//dummy used for initialization + ///tbb::enumerable_thread_specific pool(exemplar);//thread local storage pool of ValueBuffers + //tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + // [&pool](const tbb::blocked_range &range){ + // ArrayT::ValueBuffer &buffer = pool.local(); + // for (size_t i=range.begin(); i!=range.end(); ++i) buffer.push_back(i);}); + //for (auto i=pool.begin(); i!=pool.end(); ++i) i->flush(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + //std::cerr << "Number of threads for TLS = " << (buffer.end()-buffer.begin()) << std::endl; + //d.print(); + CPPUNIT_ASSERT_EQUAL(problemSize, d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + + // Not guaranteed to pass + //size_t unsorted = 0; + //for (size_t i=0, n=d.size(); i 0 ); + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0, n=d.size(); i; + ArrayT d, d2; + + tbb::parallel_for(tbb::blocked_range(0, problemSize, d.pageSize()), + [&d](const tbb::blocked_range &range){ + ArrayT::ValueBuffer buffer(d); + for (size_t i=range.begin(); i!=range.end(); ++i) buffer.push_back(i);}); + CPPUNIT_ASSERT_EQUAL(problemSize, d.size()); + CPPUNIT_ASSERT_EQUAL(size_t(1)<>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d.pageCount()*d.pageSize(), d.capacity()); + CPPUNIT_ASSERT(!d.isPartiallyFull()); + d.push_back(problemSize); + CPPUNIT_ASSERT(d.isPartiallyFull()); + + tbb::parallel_for(tbb::blocked_range(problemSize+1, 2*problemSize+1, d2.pageSize()), + [&d2](const tbb::blocked_range &range){ + ArrayT::ValueBuffer buffer(d2); + for (size_t i=range.begin(); i!=range.end(); ++i) buffer.push_back(i);}); + //for (size_t i=d.size(), n=i+problemSize; i>d2.log2PageSize(), d2.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(d2.pageCount()*d2.pageSize(), d2.capacity()); + + //d.print(); + //d2.print(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel PagedArray::merge"); +#endif + d.merge(d2); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + CPPUNIT_ASSERT(d.isPartiallyFull()); + + //d.print(); + //d2.print(); + CPPUNIT_ASSERT_EQUAL(2*problemSize+1, d.size()); + CPPUNIT_ASSERT_EQUAL((d.size()-1)>>d.log2PageSize(), d.pageCount()-1); + CPPUNIT_ASSERT_EQUAL(size_t(0), d2.size()); + CPPUNIT_ASSERT_EQUAL(size_t(0), d2.pageCount()); + +#ifdef BENCHMARK_PAGED_ARRAY + timer.start("parallel sort of merged array"); +#endif + d.sort(); +#ifdef BENCHMARK_PAGED_ARRAY + timer.stop(); +#endif + for (size_t i=0, n=d.size(); i array; + for (int i=0; i<100000; ++i) array.push_back(i); + for (int i=0; i<100000; ++i) CPPUNIT_ASSERT_EQUAL(i, array[i]); + } + {//2A + openvdb::util::PagedArray array; + openvdb::util::PagedArray::ValueBuffer buffer(array); + for (int i=0; i<100000; ++i) buffer.push_back(i); + buffer.flush(); + for (int i=0; i<100000; ++i) CPPUNIT_ASSERT_EQUAL(i, array[i]); + } + {//2B + openvdb::util::PagedArray array; + {//local scope of a single thread + openvdb::util::PagedArray::ValueBuffer buffer(array); + for (int i=0; i<100000; ++i) buffer.push_back(i); + } + for (int i=0; i<100000; ++i) CPPUNIT_ASSERT_EQUAL(i, array[i]); + } + {//3A + openvdb::util::PagedArray array; + array.resize(100000); + for (int i=0; i<100000; ++i) array[i] = i; + for (int i=0; i<100000; ++i) CPPUNIT_ASSERT_EQUAL(i, array[i]); + } + {//3B + using ArrayT = openvdb::util::PagedArray; + ArrayT array; + array.resize(100000); + for (ArrayT::Iterator i=array.begin(); i!=array.end(); ++i) *i = int(i.pos()); + for (int i=0; i<100000; ++i) CPPUNIT_ASSERT_EQUAL(i, array[i]); + } + } +} diff --git a/openvdb/unittest/TestValueAccessor.cc b/openvdb/unittest/TestValueAccessor.cc new file mode 100644 index 00000000..032e1a39 --- /dev/null +++ b/openvdb/unittest/TestValueAccessor.cc @@ -0,0 +1,568 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include + +#define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/0.0); + + +using ValueType = float; +using Tree2Type = openvdb::tree::Tree< + openvdb::tree::RootNode< + openvdb::tree::LeafNode > >; +using Tree3Type = openvdb::tree::Tree< + openvdb::tree::RootNode< + openvdb::tree::InternalNode< + openvdb::tree::LeafNode, 4> > >; +using Tree4Type = openvdb::tree::Tree4::Type; +using Tree5Type = openvdb::tree::Tree< + openvdb::tree::RootNode< + openvdb::tree::InternalNode< + openvdb::tree::InternalNode< + openvdb::tree::InternalNode< + openvdb::tree::LeafNode, 4>, 5>, 5> > >; +using TreeType = Tree4Type; + + +using namespace openvdb::tree; + +class TestValueAccessor: public CppUnit::TestFixture +{ +public: + void setUp() override { openvdb::initialize(); } + void tearDown() override { openvdb::uninitialize(); } + + CPPUNIT_TEST_SUITE(TestValueAccessor); + + CPPUNIT_TEST(testTree2Accessor); + CPPUNIT_TEST(testTree2AccessorRW); + CPPUNIT_TEST(testTree2ConstAccessor); + CPPUNIT_TEST(testTree2ConstAccessorRW); + + CPPUNIT_TEST(testTree3Accessor); + CPPUNIT_TEST(testTree3AccessorRW); + CPPUNIT_TEST(testTree3ConstAccessor); + CPPUNIT_TEST(testTree3ConstAccessorRW); + + CPPUNIT_TEST(testTree4Accessor); + CPPUNIT_TEST(testTree4AccessorRW); + CPPUNIT_TEST(testTree4ConstAccessor); + CPPUNIT_TEST(testTree4ConstAccessorRW); + + CPPUNIT_TEST(testTree5Accessor); + CPPUNIT_TEST(testTree5AccessorRW); + CPPUNIT_TEST(testTree5ConstAccessor); + CPPUNIT_TEST(testTree5ConstAccessorRW); + + CPPUNIT_TEST(testTree3Accessor2); + CPPUNIT_TEST(testTree3ConstAccessor2); + CPPUNIT_TEST(testTree4Accessor2); + CPPUNIT_TEST(testTree4ConstAccessor2); + CPPUNIT_TEST(testTree4Accessor1); + CPPUNIT_TEST(testTree4ConstAccessor1); + CPPUNIT_TEST(testTree4Accessor0); + CPPUNIT_TEST(testTree4ConstAccessor0); + CPPUNIT_TEST(testTree5Accessor2); + CPPUNIT_TEST(testTree5ConstAccessor2); + CPPUNIT_TEST(testTree4Accessor12);//cache node level 2 + CPPUNIT_TEST(testTree5Accessor213);//cache node level 1 and 3 + + CPPUNIT_TEST(testMultithreadedAccessor); + CPPUNIT_TEST(testAccessorRegistration); + CPPUNIT_TEST(testGetNode); + + CPPUNIT_TEST_SUITE_END(); + // cache all node levels + void testTree2Accessor() { accessorTest >(); } + void testTree2AccessorRW() { accessorTest >(); } + void testTree2ConstAccessor() { constAccessorTest >(); } + void testTree2ConstAccessorRW() { constAccessorTest >(); } + // cache all node levels + void testTree3Accessor() { accessorTest >(); } + void testTree3AccessorRW() { accessorTest >(); } + void testTree3ConstAccessor() { constAccessorTest >(); } + void testTree3ConstAccessorRW() { constAccessorTest >(); } + // cache all node levels + void testTree4Accessor() { accessorTest >(); } + void testTree4AccessorRW() { accessorTest >(); } + void testTree4ConstAccessor() { constAccessorTest >(); } + void testTree4ConstAccessorRW() { constAccessorTest >(); } + // cache all node levels + void testTree5Accessor() { accessorTest >(); } + void testTree5AccessorRW() { accessorTest >(); } + void testTree5ConstAccessor() { constAccessorTest >(); } + void testTree5ConstAccessorRW() { constAccessorTest >(); } + + // Test odd combinations of trees and ValueAccessors + // cache node level 0 and 1 + void testTree3Accessor2() + { + accessorTest >(); + accessorTest >(); + } + void testTree3ConstAccessor2() + { + constAccessorTest >(); + constAccessorTest >(); + } + void testTree4Accessor2() + { + accessorTest >(); + accessorTest >(); + } + void testTree4ConstAccessor2() + { + constAccessorTest >(); + constAccessorTest >(); + } + void testTree5Accessor2() + { + accessorTest >(); + accessorTest >(); + } + void testTree5ConstAccessor2() + { + constAccessorTest >(); + constAccessorTest >(); + } + // only cache leaf level + void testTree4Accessor1() + { + accessorTest >(); + accessorTest >(); + } + void testTree4ConstAccessor1() + { + constAccessorTest >(); + constAccessorTest >(); + } + // disable node caching + void testTree4Accessor0() + { + accessorTest >(); + accessorTest >(); + } + void testTree4ConstAccessor0() + { + constAccessorTest >(); + constAccessorTest >(); + } + //cache node level 2 + void testTree4Accessor12() + { + accessorTest >(); + accessorTest >(); + } + //cache node level 1 and 3 + void testTree5Accessor213() + { + accessorTest >(); + accessorTest >(); + } + + void testMultithreadedAccessor(); + void testAccessorRegistration(); + void testGetNode(); + +private: + template void accessorTest(); + template void constAccessorTest(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestValueAccessor); + + +//////////////////////////////////////// + + +namespace { + +struct Plus +{ + float addend; + Plus(float f): addend(f) {} + inline void operator()(float& f) const { f += addend; } + inline void operator()(float& f, bool& b) const { f += addend; b = false; } +}; + +} + + +template +void +TestValueAccessor::accessorTest() +{ + using TreeType = typename AccessorT::TreeType; + const int leafDepth = int(TreeType::DEPTH) - 1; + // subtract one because getValueDepth() returns 0 for values at the root + + const ValueType background = 5.0f, value = -9.345f; + const openvdb::Coord c0(5, 10, 20), c1(500000, 200000, 300000); + + { + TreeType tree(background); + CPPUNIT_ASSERT(!tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c1)); + tree.setValue(c0, value); + CPPUNIT_ASSERT(tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c1)); + } + { + TreeType tree(background); + AccessorT acc(tree); + ValueType v; + + CPPUNIT_ASSERT(!tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT(!acc.isCached(c1)); + CPPUNIT_ASSERT(!acc.probeValue(c0,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT(!acc.probeValue(c1,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(!acc.isVoxel(c0)); + CPPUNIT_ASSERT(!acc.isVoxel(c1)); + + acc.setValue(c0, value); + + CPPUNIT_ASSERT(tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c1)); + CPPUNIT_ASSERT(acc.probeValue(c0,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, v); + CPPUNIT_ASSERT(!acc.probeValue(c1,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); // leaf-level voxel value + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c1)); // background value + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(openvdb::Coord(7, 10, 20))); + const int depth = leafDepth == 1 ? -1 : leafDepth - 1; + CPPUNIT_ASSERT_EQUAL(depth, acc.getValueDepth(openvdb::Coord(8, 10, 20))); + CPPUNIT_ASSERT( acc.isVoxel(c0)); // leaf-level voxel value + CPPUNIT_ASSERT(!acc.isVoxel(c1)); + CPPUNIT_ASSERT( acc.isVoxel(openvdb::Coord(7, 10, 20))); + CPPUNIT_ASSERT(!acc.isVoxel(openvdb::Coord(8, 10, 20))); + + ASSERT_DOUBLES_EXACTLY_EQUAL(background, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c1)); // uncached background value + CPPUNIT_ASSERT(!acc.isValueOn(c1)); // inactive background value + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c0)); + CPPUNIT_ASSERT( + (acc.numCacheLevels()>0) == acc.isCached(c0)); // active, leaf-level voxel value + CPPUNIT_ASSERT(acc.isValueOn(c0)); + + acc.setValue(c1, value); + + CPPUNIT_ASSERT(acc.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c1)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(acc.isVoxel(c0)); + CPPUNIT_ASSERT(acc.isVoxel(c1)); + + tree.setValueOff(c1); + + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + CPPUNIT_ASSERT( acc.isValueOn(c0)); + CPPUNIT_ASSERT(!acc.isValueOn(c1)); + + acc.setValueOn(c1); + + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + CPPUNIT_ASSERT( acc.isValueOn(c0)); + CPPUNIT_ASSERT( acc.isValueOn(c1)); + + acc.modifyValueAndActiveState(c1, Plus(-value)); // subtract value & mark inactive + CPPUNIT_ASSERT(!acc.isValueOn(c1)); + + acc.modifyValue(c1, Plus(-value)); // subtract value again & mark active + + CPPUNIT_ASSERT(acc.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(-value, tree.getValue(c1)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(-value, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(acc.isVoxel(c0)); + CPPUNIT_ASSERT(acc.isVoxel(c1)); + + acc.setValueOnly(c1, 3*value); + + CPPUNIT_ASSERT(acc.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(3*value, tree.getValue(c1)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(3*value, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(acc.isVoxel(c0)); + CPPUNIT_ASSERT(acc.isVoxel(c1)); + + acc.clear(); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT(!acc.isCached(c1)); + } +} + + +template +void +TestValueAccessor::constAccessorTest() +{ + using TreeType = typename std::remove_const::type; + const int leafDepth = int(TreeType::DEPTH) - 1; + // subtract one because getValueDepth() returns 0 for values at the root + + const ValueType background = 5.0f, value = -9.345f; + const openvdb::Coord c0(5, 10, 20), c1(500000, 200000, 300000); + ValueType v; + + TreeType tree(background); + AccessorT acc(tree); + + CPPUNIT_ASSERT(!tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, tree.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT(!acc.isCached(c1)); + CPPUNIT_ASSERT(!acc.probeValue(c0,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT(!acc.probeValue(c1,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(!acc.isVoxel(c0)); + CPPUNIT_ASSERT(!acc.isVoxel(c1)); + + tree.setValue(c0, value); + + CPPUNIT_ASSERT(tree.isValueOn(c0)); + CPPUNIT_ASSERT(!tree.isValueOn(c1)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT(acc.isValueOn(c0)); + CPPUNIT_ASSERT(!acc.isValueOn(c1)); + CPPUNIT_ASSERT(acc.probeValue(c0,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(value, v); + CPPUNIT_ASSERT(!acc.probeValue(c1,v)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, v); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(-1, acc.getValueDepth(c1)); + CPPUNIT_ASSERT( acc.isVoxel(c0)); + CPPUNIT_ASSERT(!acc.isVoxel(c1)); + + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c0)); + ASSERT_DOUBLES_EXACTLY_EQUAL(background, acc.getValue(c1)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c0)); + CPPUNIT_ASSERT(!acc.isCached(c1)); + CPPUNIT_ASSERT(acc.isValueOn(c0)); + CPPUNIT_ASSERT(!acc.isValueOn(c1)); + + tree.setValue(c1, value); + + ASSERT_DOUBLES_EXACTLY_EQUAL(value, acc.getValue(c1)); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT((acc.numCacheLevels()>0) == acc.isCached(c1)); + CPPUNIT_ASSERT(acc.isValueOn(c0)); + CPPUNIT_ASSERT(acc.isValueOn(c1)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c0)); + CPPUNIT_ASSERT_EQUAL(leafDepth, acc.getValueDepth(c1)); + CPPUNIT_ASSERT(acc.isVoxel(c0)); + CPPUNIT_ASSERT(acc.isVoxel(c1)); + + // The next two lines should not compile, because the acc references a const tree: + //acc.setValue(c1, value); + //acc.setValueOff(c1); + + acc.clear(); + CPPUNIT_ASSERT(!acc.isCached(c0)); + CPPUNIT_ASSERT(!acc.isCached(c1)); +} + + +void +TestValueAccessor::testMultithreadedAccessor() +{ +#define MAX_COORD 5000 + + using AccessorT = openvdb::tree::ValueAccessorRW; + // Substituting the following alias typically results in assertion failures: + //using AccessorT = openvdb::tree::ValueAccessor; + + // Task to perform multiple reads through a shared accessor + struct ReadTask: public tbb::task { + AccessorT& acc; + ReadTask(AccessorT& c): acc(c) {} + tbb::task* execute() + { + for (int i = -MAX_COORD; i < MAX_COORD; ++i) { + ASSERT_DOUBLES_EXACTLY_EQUAL(double(i), acc.getValue(openvdb::Coord(i))); + } + return nullptr; + } + }; + // Task to perform multiple writes through a shared accessor + struct WriteTask: public tbb::task { + AccessorT& acc; + WriteTask(AccessorT& c): acc(c) {} + tbb::task* execute() + { + for (int i = -MAX_COORD; i < MAX_COORD; ++i) { + float f = acc.getValue(openvdb::Coord(i)); + ASSERT_DOUBLES_EXACTLY_EQUAL(float(i), f); + acc.setValue(openvdb::Coord(i), float(i)); + ASSERT_DOUBLES_EXACTLY_EQUAL(float(i), acc.getValue(openvdb::Coord(i))); + } + return nullptr; + } + }; + // Parent task to spawn multiple parallel read and write tasks + struct RootTask: public tbb::task { + AccessorT& acc; + RootTask(AccessorT& c): acc(c) {} + tbb::task* execute() + { + ReadTask* r[3]; WriteTask* w[3]; + for (int i = 0; i < 3; ++i) { + r[i] = new(allocate_child()) ReadTask(acc); + w[i] = new(allocate_child()) WriteTask(acc); + } + set_ref_count(6 /*children*/ + 1 /*wait*/); + for (int i = 0; i < 3; ++i) { + spawn(*r[i]); spawn(*w[i]); + } + wait_for_all(); + return nullptr; + } + }; + + Tree4Type tree(/*background=*/0.5); + AccessorT acc(tree); + // Populate the tree. + for (int i = -MAX_COORD; i < MAX_COORD; ++i) { + acc.setValue(openvdb::Coord(i), float(i)); + } + + // Run multiple read and write tasks in parallel. + RootTask& root = *new(tbb::task::allocate_root()) RootTask(acc); + tbb::task::spawn_root_and_wait(root); + +#undef MAX_COORD +} + + +void +TestValueAccessor::testAccessorRegistration() +{ + using openvdb::Index; + + const float background = 5.0f, value = -9.345f; + const openvdb::Coord c0(5, 10, 20); + + openvdb::FloatTree::Ptr tree(new openvdb::FloatTree(background)); + openvdb::tree::ValueAccessor acc(*tree); + + // Set a single leaf voxel via the accessor and verify that + // the cache is populated. + acc.setValue(c0, value); + CPPUNIT_ASSERT_EQUAL(Index(1), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(tree->root().getLevel(), tree->nonLeafCount()); + CPPUNIT_ASSERT(acc.getNode() != nullptr); + + // Reset the voxel to the background value and verify that no nodes + // have been deleted and that the cache is still populated. + tree->setValueOff(c0, background); + CPPUNIT_ASSERT_EQUAL(Index(1), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(tree->root().getLevel(), tree->nonLeafCount()); + CPPUNIT_ASSERT(acc.getNode() != nullptr); + + // Prune the tree and verify that only the root node remains and that + // the cache has been cleared. + openvdb::tools::prune(*tree); + //tree->prune(); + CPPUNIT_ASSERT_EQUAL(Index(0), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(Index(1), tree->nonLeafCount()); // root node only + CPPUNIT_ASSERT(acc.getNode() == nullptr); + + // Set the leaf voxel again and verify that the cache is repopulated. + acc.setValue(c0, value); + CPPUNIT_ASSERT_EQUAL(Index(1), tree->leafCount()); + CPPUNIT_ASSERT_EQUAL(tree->root().getLevel(), tree->nonLeafCount()); + CPPUNIT_ASSERT(acc.getNode() != nullptr); + + // Delete the tree and verify that the cache has been cleared. + tree.reset(); + CPPUNIT_ASSERT(acc.getTree() == nullptr); + CPPUNIT_ASSERT(acc.getNode() == nullptr); + CPPUNIT_ASSERT(acc.getNode() == nullptr); +} + + +void +TestValueAccessor::testGetNode() +{ + using LeafT = Tree4Type::LeafNodeType; + + const ValueType background = 5.0f, value = -9.345f; + const openvdb::Coord c0(5, 10, 20); + + Tree4Type tree(background); + tree.setValue(c0, value); + { + openvdb::tree::ValueAccessor acc(tree); + // Prime the cache. + acc.getValue(c0); + // Verify that the cache contains a leaf node. + LeafT* node = acc.getNode(); + CPPUNIT_ASSERT(node != nullptr); + + // Erase the leaf node from the cache and verify that it is gone. + acc.eraseNode(); + node = acc.getNode(); + CPPUNIT_ASSERT(node == nullptr); + } + { + // As above, but with a const tree. + openvdb::tree::ValueAccessor acc(tree); + acc.getValue(c0); + const LeafT* node = acc.getNode(); + CPPUNIT_ASSERT(node != nullptr); + + acc.eraseNode(); + node = acc.getNode(); + CPPUNIT_ASSERT(node == nullptr); + } +} diff --git a/openvdb/unittest/TestVec2Metadata.cc b/openvdb/unittest/TestVec2Metadata.cc new file mode 100644 index 00000000..285f7eda --- /dev/null +++ b/openvdb/unittest/TestVec2Metadata.cc @@ -0,0 +1,97 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestVec2Metadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestVec2Metadata); + CPPUNIT_TEST(testVec2i); + CPPUNIT_TEST(testVec2s); + CPPUNIT_TEST(testVec2d); + CPPUNIT_TEST_SUITE_END(); + + void testVec2i(); + void testVec2s(); + void testVec2d(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestVec2Metadata); + +void +TestVec2Metadata::testVec2i() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec2IMetadata(openvdb::Vec2i(1, 1))); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("vec2i") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("vec2i") == 0); + + Vec2IMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2i(1, 1)); + s->value() = openvdb::Vec2i(2, 2); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2i(2, 2)); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2i(2, 2)); +} + +void +TestVec2Metadata::testVec2s() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec2SMetadata(openvdb::Vec2s(1, 1))); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("vec2s") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("vec2s") == 0); + + Vec2SMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2s(1, 1)); + s->value() = openvdb::Vec2s(2, 2); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2s(2, 2)); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2s(2, 2)); +} + +void +TestVec2Metadata::testVec2d() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec2DMetadata(openvdb::Vec2d(1, 1))); + Metadata::Ptr m2 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast(m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m2.get()) != 0); + + CPPUNIT_ASSERT(m->typeName().compare("vec2d") == 0); + CPPUNIT_ASSERT(m2->typeName().compare("vec2d") == 0); + + Vec2DMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2d(1, 1)); + s->value() = openvdb::Vec2d(2, 2); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2d(2, 2)); + + m2->copy(*s); + + s = dynamic_cast(m2.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec2d(2, 2)); +} diff --git a/openvdb/unittest/TestVec3Metadata.cc b/openvdb/unittest/TestVec3Metadata.cc new file mode 100644 index 00000000..535e6bf4 --- /dev/null +++ b/openvdb/unittest/TestVec3Metadata.cc @@ -0,0 +1,97 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include + +class TestVec3Metadata : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestVec3Metadata); + CPPUNIT_TEST(testVec3i); + CPPUNIT_TEST(testVec3s); + CPPUNIT_TEST(testVec3d); + CPPUNIT_TEST_SUITE_END(); + + void testVec3i(); + void testVec3s(); + void testVec3d(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestVec3Metadata); + +void +TestVec3Metadata::testVec3i() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec3IMetadata(openvdb::Vec3i(1, 1, 1))); + Metadata::Ptr m3 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast( m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m3.get()) != 0); + + CPPUNIT_ASSERT( m->typeName().compare("vec3i") == 0); + CPPUNIT_ASSERT(m3->typeName().compare("vec3i") == 0); + + Vec3IMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3i(1, 1, 1)); + s->value() = openvdb::Vec3i(3, 3, 3); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3i(3, 3, 3)); + + m3->copy(*s); + + s = dynamic_cast(m3.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3i(3, 3, 3)); +} + +void +TestVec3Metadata::testVec3s() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec3SMetadata(openvdb::Vec3s(1, 1, 1))); + Metadata::Ptr m3 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast( m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m3.get()) != 0); + + CPPUNIT_ASSERT( m->typeName().compare("vec3s") == 0); + CPPUNIT_ASSERT(m3->typeName().compare("vec3s") == 0); + + Vec3SMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3s(1, 1, 1)); + s->value() = openvdb::Vec3s(3, 3, 3); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3s(3, 3, 3)); + + m3->copy(*s); + + s = dynamic_cast(m3.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3s(3, 3, 3)); +} + +void +TestVec3Metadata::testVec3d() +{ + using namespace openvdb; + + Metadata::Ptr m(new Vec3DMetadata(openvdb::Vec3d(1, 1, 1))); + Metadata::Ptr m3 = m->copy(); + + CPPUNIT_ASSERT(dynamic_cast( m.get()) != 0); + CPPUNIT_ASSERT(dynamic_cast(m3.get()) != 0); + + CPPUNIT_ASSERT( m->typeName().compare("vec3d") == 0); + CPPUNIT_ASSERT(m3->typeName().compare("vec3d") == 0); + + Vec3DMetadata *s = dynamic_cast(m.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3d(1, 1, 1)); + s->value() = openvdb::Vec3d(3, 3, 3); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3d(3, 3, 3)); + + m3->copy(*s); + + s = dynamic_cast(m3.get()); + CPPUNIT_ASSERT(s->value() == openvdb::Vec3d(3, 3, 3)); +} diff --git a/openvdb/unittest/TestVolumeRayIntersector.cc b/openvdb/unittest/TestVolumeRayIntersector.cc new file mode 100644 index 00000000..0cd9fbb2 --- /dev/null +++ b/openvdb/unittest/TestVolumeRayIntersector.cc @@ -0,0 +1,301 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file unittest/TestVolumeRayIntersector.cc +/// @author Ken Museth + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include + + +#define ASSERT_DOUBLES_APPROX_EQUAL(expected, actual) \ + CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/1.e-6); + + +class TestVolumeRayIntersector : public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestVolumeRayIntersector); + CPPUNIT_TEST(testAll); + CPPUNIT_TEST_SUITE_END(); + + void testAll(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestVolumeRayIntersector); + +void +TestVolumeRayIntersector::testAll() +{ + using namespace openvdb; + typedef math::Ray RayT; + typedef RayT::Vec3Type Vec3T; + + {//one single leaf node + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0,0,0), 1.0f); + grid.tree().setValue(Coord(7,7,7), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL( 9.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//same as above but with dilation + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0,0,0), 1.0f); + grid.tree().setValue(Coord(7,7,7), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid, 1); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 0.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//one single leaf node + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(1,1,1), 1.0f); + grid.tree().setValue(Coord(7,3,3), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL( 9.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//same as above but with dilation + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(1,1,1), 1.0f); + grid.tree().setValue(Coord(7,3,3), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid, 1); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//two adjacent leaf nodes + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0,0,0), 1.0f); + grid.tree().setValue(Coord(8,0,0), 1.0f); + grid.tree().setValue(Coord(15,7,7), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//two adjacent leafs followed by a gab and leaf + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0*8,0,0), 1.0f); + grid.tree().setValue(Coord(1*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8+7,7,7), 1.0f); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1); + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL(25.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(33.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + {//two adjacent leafs followed by a gab, a leaf and an active tile + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0*8,0,0), 1.0f); + grid.tree().setValue(Coord(1*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8,0,0), 1.0f); + grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1); + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL(25.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(41.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + + {//two adjacent leafs followed by a gab, a leaf and an active tile + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0*8,0,0), 1.0f); + grid.tree().setValue(Coord(1*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8,0,0), 1.0f); + grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + + std::vector list; + inter.hits(list); + CPPUNIT_ASSERT(list.size() == 2); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, list[0].t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, list[0].t1); + ASSERT_DOUBLES_APPROX_EQUAL(25.0, list[1].t0); + ASSERT_DOUBLES_APPROX_EQUAL(41.0, list[1].t1); + } + + {//same as above but now with std::deque instead of std::vector + FloatGrid grid(0.0f); + + grid.tree().setValue(Coord(0*8,0,0), 1.0f); + grid.tree().setValue(Coord(1*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8,0,0), 1.0f); + grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true); + + const Vec3T dir( 1.0, 0.0, 0.0); + const Vec3T eye(-1.0, 0.0, 0.0); + const RayT ray(eye, dir);//ray in index space + tools::VolumeRayIntersector inter(grid); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + + std::deque list; + inter.hits(list); + CPPUNIT_ASSERT(list.size() == 2); + ASSERT_DOUBLES_APPROX_EQUAL( 1.0, list[0].t0); + ASSERT_DOUBLES_APPROX_EQUAL(17.0, list[0].t1); + ASSERT_DOUBLES_APPROX_EQUAL(25.0, list[1].t0); + ASSERT_DOUBLES_APPROX_EQUAL(41.0, list[1].t1); + } + + {// Test submitted by "Jan" @ GitHub + FloatGrid grid(0.0f); + grid.tree().setValue(Coord(0*8,0,0), 1.0f); + grid.tree().setValue(Coord(1*8,0,0), 1.0f); + grid.tree().setValue(Coord(3*8,0,0), 1.0f); + tools::VolumeRayIntersector inter(grid); + + const Vec3T dir(-1.0, 0.0, 0.0); + const Vec3T eye(50.0, 0.0, 0.0); + const RayT ray(eye, dir); + CPPUNIT_ASSERT(inter.setIndexRay(ray)); + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL(18.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(26.0, t1); + CPPUNIT_ASSERT(inter.march(t0, t1)); + ASSERT_DOUBLES_APPROX_EQUAL(34.0, t0); + ASSERT_DOUBLES_APPROX_EQUAL(50.0, t1); + CPPUNIT_ASSERT(!inter.march(t0, t1)); + } + + {// Test submitted by "Trevor" @ GitHub + + FloatGrid::Ptr grid = createGrid(0.0f); + grid->tree().setValue(Coord(0,0,0), 1.0f); + tools::dilateVoxels(grid->tree()); + tools::VolumeRayIntersector inter(*grid); + + //std::cerr << "BBox = " << inter.bbox() << std::endl; + + const Vec3T eye(-0.25, -0.25, 10.0); + const Vec3T dir( 0.00, 0.00, -1.0); + const RayT ray(eye, dir); + CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox + + double t0=0, t1=0; + CPPUNIT_ASSERT(!inter.march(t0, t1));// misses leafs + } + + {// Test submitted by "Trevor" @ GitHub + + FloatGrid::Ptr grid = createGrid(0.0f); + grid->tree().setValue(Coord(0,0,0), 1.0f); + tools::dilateVoxels(grid->tree()); + tools::VolumeRayIntersector inter(*grid); + + //GridPtrVec grids; + //grids.push_back(grid); + //io::File vdbfile("trevor_v1.vdb"); + //vdbfile.write(grids); + + //std::cerr << "BBox = " << inter.bbox() << std::endl; + + const Vec3T eye(0.75, 0.75, 10.0); + const Vec3T dir( 0.00, 0.00, -1.0); + const RayT ray(eye, dir); + CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox + + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1));// misses leafs + //std::cerr << "t0=" << t0 << " t1=" << t1 << std::endl; + } + + {// Test derived from the test submitted by "Trevor" @ GitHub + + FloatGrid grid(0.0f); + grid.fill(math::CoordBBox(Coord(-1,-1,-1),Coord(1,1,1)), 1.0f); + tools::VolumeRayIntersector inter(grid); + //std::cerr << "BBox = " << inter.bbox() << std::endl; + + const Vec3T eye(-0.25, -0.25, 10.0); + const Vec3T dir( 0.00, 0.00, -1.0); + const RayT ray(eye, dir); + CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox + + double t0=0, t1=0; + CPPUNIT_ASSERT(inter.march(t0, t1));// hits leafs + //std::cerr << "t0=" << t0 << " t1=" << t1 << std::endl; + } +} diff --git a/openvdb/unittest/TestVolumeToMesh.cc b/openvdb/unittest/TestVolumeToMesh.cc new file mode 100644 index 00000000..5b7fa93e --- /dev/null +++ b/openvdb/unittest/TestVolumeToMesh.cc @@ -0,0 +1,126 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include + +#include + +class TestVolumeToMesh: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestVolumeToMesh); + CPPUNIT_TEST(testAuxiliaryDataCollection); + CPPUNIT_TEST(testUniformMeshing); + CPPUNIT_TEST_SUITE_END(); + + void testAuxiliaryDataCollection(); + void testUniformMeshing(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestVolumeToMesh); + + +//////////////////////////////////////// + + +void +TestVolumeToMesh::testAuxiliaryDataCollection() +{ + typedef openvdb::tree::Tree4::Type FloatTreeType; + typedef FloatTreeType::ValueConverter::Type BoolTreeType; + + const float iso = 0.0f; + const openvdb::Coord ijk(0,0,0); + + FloatTreeType inputTree(1.0f); + inputTree.setValue(ijk, -1.0f); + + BoolTreeType intersectionTree(false); + + openvdb::tools::volume_to_mesh_internal::identifySurfaceIntersectingVoxels( + intersectionTree, inputTree, iso); + + CPPUNIT_ASSERT_EQUAL(size_t(8), size_t(intersectionTree.activeVoxelCount())); + + typedef FloatTreeType::ValueConverter::Type Int16TreeType; + typedef FloatTreeType::ValueConverter::Type Index32TreeType; + + Int16TreeType signFlagsTree(0); + Index32TreeType pointIndexTree(99999); + + openvdb::tools::volume_to_mesh_internal::computeAuxiliaryData( + signFlagsTree, pointIndexTree, intersectionTree, inputTree, iso); + + const int flags = int(signFlagsTree.getValue(ijk)); + + CPPUNIT_ASSERT(bool(flags & openvdb::tools::volume_to_mesh_internal::INSIDE)); + CPPUNIT_ASSERT(bool(flags & openvdb::tools::volume_to_mesh_internal::EDGES)); + CPPUNIT_ASSERT(bool(flags & openvdb::tools::volume_to_mesh_internal::XEDGE)); + CPPUNIT_ASSERT(bool(flags & openvdb::tools::volume_to_mesh_internal::YEDGE)); + CPPUNIT_ASSERT(bool(flags & openvdb::tools::volume_to_mesh_internal::ZEDGE)); +} + + +void +TestVolumeToMesh::testUniformMeshing() +{ + typedef openvdb::tree::Tree4::Type FloatTreeType; + typedef openvdb::Grid FloatGridType; + + FloatGridType grid(1.0f); + + // test voxel region meshing + + openvdb::CoordBBox bbox(openvdb::Coord(1), openvdb::Coord(6)); + + grid.tree().fill(bbox, -1.0f); + + std::vector points; + std::vector quads; + std::vector triangles; + + openvdb::tools::volumeToMesh(grid, points, quads); + + CPPUNIT_ASSERT(!points.empty()); + CPPUNIT_ASSERT_EQUAL(size_t(216), quads.size()); + + + points.clear(); + quads.clear(); + triangles.clear(); + grid.clear(); + + + // test tile region meshing + + grid.tree().addTile(FloatTreeType::LeafNodeType::LEVEL + 1, openvdb::Coord(0), -1.0f, true); + + openvdb::tools::volumeToMesh(grid, points, quads); + + CPPUNIT_ASSERT(!points.empty()); + CPPUNIT_ASSERT_EQUAL(size_t(384), quads.size()); + + + points.clear(); + quads.clear(); + triangles.clear(); + grid.clear(); + + + // test tile region and bool volume meshing + + typedef FloatTreeType::ValueConverter::Type BoolTreeType; + typedef openvdb::Grid BoolGridType; + + BoolGridType maskGrid(false); + + maskGrid.tree().addTile(BoolTreeType::LeafNodeType::LEVEL + 1, openvdb::Coord(0), true, true); + + openvdb::tools::volumeToMesh(maskGrid, points, quads); + + CPPUNIT_ASSERT(!points.empty()); + CPPUNIT_ASSERT_EQUAL(size_t(384), quads.size()); +} diff --git a/openvdb/unittest/TestVolumeToSpheres.cc b/openvdb/unittest/TestVolumeToSpheres.cc new file mode 100644 index 00000000..aec47964 --- /dev/null +++ b/openvdb/unittest/TestVolumeToSpheres.cc @@ -0,0 +1,243 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include + +#include +#include // for createLevelSetSphere +#include // for sdfToFogVolume +#include // for fillWithSpheres + +#include +#include +#include +#include + + +class TestVolumeToSpheres: public CppUnit::TestCase +{ +public: + CPPUNIT_TEST_SUITE(TestVolumeToSpheres); + CPPUNIT_TEST(testFromLevelSet); + CPPUNIT_TEST(testFromFog); + CPPUNIT_TEST(testMinimumSphereCount); + CPPUNIT_TEST(testClosestSurfacePoint); + CPPUNIT_TEST_SUITE_END(); + + void testFromLevelSet(); + void testFromFog(); + void testMinimumSphereCount(); + void testClosestSurfacePoint(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(TestVolumeToSpheres); + + +//////////////////////////////////////// + + +void +TestVolumeToSpheres::testFromLevelSet() +{ + const float + radius = 20.0f, + voxelSize = 1.0f, + halfWidth = 3.0f; + const openvdb::Vec3f center(15.0f, 13.0f, 16.0f); + + openvdb::FloatGrid::ConstPtr grid = openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, halfWidth); + + const bool overlapping = false; + const int instanceCount = 10000; + const float + isovalue = 0.0f, + minRadius = 5.0f, + maxRadius = std::numeric_limits::max(); + const openvdb::Vec2i sphereCount(1, 100); + + { + std::vector spheres; + + openvdb::tools::fillWithSpheres(*grid, spheres, sphereCount, overlapping, + minRadius, maxRadius, isovalue, instanceCount); + + CPPUNIT_ASSERT_EQUAL(1, int(spheres.size())); + + //for (size_t i=0; i< spheres.size(); ++i) { + // std::cout << "\nSphere #" << i << ": " << spheres[i] << std::endl; + //} + + const auto tolerance = 2.0 * voxelSize; + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[0], spheres[0][0], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[1], spheres[0][1], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[2], spheres[0][2], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(radius, spheres[0][3], tolerance); + } + { + // Verify that an isovalue outside the narrow band still produces a valid sphere. + std::vector spheres; + openvdb::tools::fillWithSpheres(*grid, spheres, sphereCount, + overlapping, minRadius, maxRadius, 1.5f * halfWidth, instanceCount); + CPPUNIT_ASSERT_EQUAL(1, int(spheres.size())); + } + { + // Verify that an isovalue inside the narrow band produces no spheres. + std::vector spheres; + openvdb::tools::fillWithSpheres(*grid, spheres, sphereCount, + overlapping, minRadius, maxRadius, -1.5f * halfWidth, instanceCount); + CPPUNIT_ASSERT_EQUAL(0, int(spheres.size())); + } +} + + +void +TestVolumeToSpheres::testFromFog() +{ + const float + radius = 20.0f, + voxelSize = 1.0f, + halfWidth = 3.0f; + const openvdb::Vec3f center(15.0f, 13.0f, 16.0f); + + auto grid = openvdb::tools::createLevelSetSphere( + radius, center, voxelSize, halfWidth); + openvdb::tools::sdfToFogVolume(*grid); + + const bool overlapping = false; + const int instanceCount = 10000; + const float + isovalue = 0.01f, + minRadius = 5.0f, + maxRadius = std::numeric_limits::max(); + const openvdb::Vec2i sphereCount(1, 100); + + { + std::vector spheres; + openvdb::tools::fillWithSpheres(*grid, spheres, sphereCount, overlapping, + minRadius, maxRadius, isovalue, instanceCount); + + //for (size_t i=0; i< spheres.size(); ++i) { + // std::cout << "\nSphere #" << i << ": " << spheres[i] << std::endl; + //} + + CPPUNIT_ASSERT_EQUAL(1, int(spheres.size())); + + const auto tolerance = 2.0 * voxelSize; + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[0], spheres[0][0], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[1], spheres[0][1], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(center[2], spheres[0][2], tolerance); + CPPUNIT_ASSERT_DOUBLES_EQUAL(radius, spheres[0][3], tolerance); + } + { + // Verify that an isovalue outside the narrow band still produces valid spheres. + std::vector spheres; + openvdb::tools::fillWithSpheres(*grid, spheres, sphereCount, overlapping, + minRadius, maxRadius, 10.0f, instanceCount); + CPPUNIT_ASSERT(!spheres.empty()); + } +} + + +void +TestVolumeToSpheres::testMinimumSphereCount() +{ + using namespace openvdb; + { + auto grid = tools::createLevelSetSphere(/*radius=*/5.0f, + /*center=*/Vec3f(15.0f, 13.0f, 16.0f), /*voxelSize=*/1.0f, /*halfWidth=*/3.0f); + + // Verify that the requested minimum number of spheres is generated, for various minima. + const int maxSphereCount = 100; + for (int minSphereCount = 1; minSphereCount < 20; minSphereCount += 5) { + std::vector spheres; + tools::fillWithSpheres(*grid, spheres, Vec2i(minSphereCount, maxSphereCount), + /*overlapping=*/true, /*minRadius=*/2.0f); + + // Given the relatively large minimum radius, the actual sphere count + // should be no larger than the requested mimimum count. + CPPUNIT_ASSERT_EQUAL(minSphereCount, int(spheres.size())); + //CPPUNIT_ASSERT(int(spheres.size()) >= minSphereCount); + CPPUNIT_ASSERT(int(spheres.size()) <= maxSphereCount); + } + } + { + // One step in the sphere packing algorithm is to erode the active voxel mask + // of the input grid. Previously, for very small grids this sometimes resulted in + // an empty mask and therefore no spheres. Verify that that no longer happens + // (as long as the minimum sphere count is nonzero). + + FloatGrid grid; + CoordBBox bbox(Coord(1), Coord(2)); + grid.fill(bbox, 1.0f); + + const float minRadius = 1.0f; + const Vec2i sphereCount(5, 100); + + std::vector spheres; + tools::fillWithSpheres(grid, spheres, sphereCount, /*overlapping=*/true, minRadius); + + CPPUNIT_ASSERT(int(spheres.size()) >= sphereCount[0]); + } +} + + +void +TestVolumeToSpheres::testClosestSurfacePoint() +{ + using namespace openvdb; + + const float voxelSize = 1.0f; + const Vec3f center{0.0f}; // ensure multiple internal nodes + + for (const float radius: { 8.0f, 50.0f }) { + // Construct a spherical level set. + const auto sphere = tools::createLevelSetSphere(radius, center, voxelSize); + CPPUNIT_ASSERT(sphere); + + // Construct the corners of a cube that exactly encloses the sphere. + const std::vector corners{ + { -radius, -radius, -radius }, + { -radius, -radius, radius }, + { -radius, radius, -radius }, + { -radius, radius, radius }, + { radius, -radius, -radius }, + { radius, -radius, radius }, + { radius, radius, -radius }, + { radius, radius, radius }, + }; + // Compute the distance from a corner of the cube to the surface of the sphere. + const auto distToSurface = Vec3d{radius}.length() - radius; + + auto csp = tools::ClosestSurfacePoint::create(*sphere); + CPPUNIT_ASSERT(csp); + + // Move each corner point to the closest surface point. + auto points = corners; + std::vector distances; + bool ok = csp->searchAndReplace(points, distances); + CPPUNIT_ASSERT(ok); + CPPUNIT_ASSERT_EQUAL(8, int(points.size())); + CPPUNIT_ASSERT_EQUAL(8, int(distances.size())); + + for (auto d: distances) { + CPPUNIT_ASSERT((std::abs(d - distToSurface) / distToSurface) < 0.01); // rel err < 1% + } + for (int i = 0; i < 8; ++i) { + const auto intersection = corners[i] + distToSurface * (center - corners[i]).unit(); + CPPUNIT_ASSERT(points[i].eq(intersection, /*tolerance=*/0.1)); + } + + // Place a point inside the sphere. + points.clear(); + distances.clear(); + points.emplace_back(1, 0, 0); + ok = csp->searchAndReplace(points, distances); + CPPUNIT_ASSERT(ok); + CPPUNIT_ASSERT_EQUAL(1, int(points.size())); + CPPUNIT_ASSERT_EQUAL(1, int(distances.size())); + CPPUNIT_ASSERT((std::abs(radius - 1 - distances[0]) / (radius - 1)) < 0.01); + CPPUNIT_ASSERT(points[0].eq(Vec3R{radius, 0, 0}, /*tolerance=*/0.5)); + ///< @todo off by half a voxel in y and z + } +} diff --git a/openvdb/unittest/main.cc b/openvdb/unittest/main.cc new file mode 100644 index 00000000..fd4f9883 --- /dev/null +++ b/openvdb/unittest/main.cc @@ -0,0 +1,246 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include // for std::shuffle() +#include // for std::round() +#include // for EXIT_SUCCESS +#include // for strrchr() +#include +#include +#include +#include +#include +#include + + +namespace { + +using StringVec = std::vector; + + +void +usage(const char* progName, std::ostream& ostrm) +{ + ostrm << +"Usage: " << progName << " [options]\n" << +"Which: runs OpenVDB library unit tests\n" << +"Options:\n" << +" -f file read whitespace-separated names of tests to be run\n" << +" from the given file (\"#\" comments are supported)\n" << +" -l list all available tests\n" << +" -shuffle run tests in random order\n" << +" -t test specific suite or test to run, e.g., \"-t TestGrid\"\n" << +" or \"-t TestGrid::testGetGrid\" (default: run all tests)\n" << +" -v verbose output\n"; +#ifdef OPENVDB_USE_LOG4CPLUS + ostrm << +"\n" << +" -error log fatal and non-fatal errors (default: log only fatal errors)\n" << +" -warn log warnings and errors\n" << +" -info log info messages, warnings and errors\n" << +" -debug log debugging messages, info messages, warnings and errors\n"; +#endif +} + + +void +getTestNames(StringVec& nameVec, const CppUnit::Test* test) +{ + if (test) { + const int numChildren = test->getChildTestCount(); + if (numChildren == 0) { + nameVec.push_back(test->getName()); + } else { + for (int i = 0; i < test->getChildTestCount(); ++i) { + getTestNames(nameVec, test->getChildTestAt(i)); + } + } + } +} + + +/// Listener that prints the name, elapsed time, and error status of each test +class TimedTestProgressListener: public CppUnit::TestListener +{ +public: + void startTest(CppUnit::Test* test) override + { + mFailed = false; + std::cout << test->getName() << std::flush; + mTimer.start(); + } + + void addFailure(const CppUnit::TestFailure& failure) override + { + std::cout << " : " << (failure.isError() ? "error" : "assertion"); + mFailed = true; + } + + void endTest(CppUnit::Test*) override + { + if (!mFailed) { + // Print elapsed time only for successful tests. + const double msec = std::round(mTimer.milliseconds()); + if (msec > 1.0) { + openvdb::util::printTime(std::cout, msec, " : OK (", ")", + /*width=*/0, /*precision=*/(msec > 1000.0 ? 1 : 0), /*verbose=*/0); + } else { + std::cout << " : OK (<1ms)"; + } + } + std::cout << std::endl; + } + +private: + openvdb::util::CpuTimer mTimer; + bool mFailed = false; +}; + + +int +run(int argc, char* argv[]) +{ + const char* progName = argv[0]; + if (const char* ptr = ::strrchr(progName, '/')) progName = ptr + 1; + + bool shuffle = false, verbose = false; + StringVec tests; + for (int i = 1; i < argc; ++i) { + const std::string arg = argv[i]; + if (arg == "-l") { + StringVec allTests; + getTestNames(allTests, + CppUnit::TestFactoryRegistry::getRegistry().makeTest()); + for (const auto& name: allTests) { std::cout << name << "\n"; } + return EXIT_SUCCESS; + } else if (arg == "-shuffle") { + shuffle = true; + } else if (arg == "-v") { + verbose = true; + } else if (arg == "-t") { + if (i + 1 < argc) { + ++i; + tests.push_back(argv[i]); + } else { + OPENVDB_LOG_FATAL("missing test name after \"-t\""); + usage(progName, std::cerr); + return EXIT_FAILURE; + } + } else if (arg == "-f") { + if (i + 1 < argc) { + ++i; + std::ifstream file{argv[i]}; + if (file.fail()) { + OPENVDB_LOG_FATAL("unable to read file " << argv[i]); + return EXIT_FAILURE; + } + while (file) { + // Read a whitespace-separated string from the file. + std::string test; + file >> test; + if (!test.empty()) { + if (test[0] != '#') { + tests.push_back(test); + } else { + // If the string starts with a comment symbol ("#"), + // skip it and jump to the end of the line. + while (file) { if (file.get() == '\n') break; } + } + } + } + } else { + OPENVDB_LOG_FATAL("missing filename after \"-f\""); + usage(progName, std::cerr); + return EXIT_FAILURE; + } + } else if (arg == "-h" || arg == "-help" || arg == "--help") { + usage(progName, std::cout); + return EXIT_SUCCESS; + } else { + OPENVDB_LOG_FATAL("unrecognized option \"" << arg << "\""); + usage(progName, std::cerr); + return EXIT_FAILURE; + } + } + + try { + CppUnit::TestFactoryRegistry& registry = + CppUnit::TestFactoryRegistry::getRegistry(); + + auto* root = registry.makeTest(); + if (!root) { + throw std::runtime_error( + "CppUnit test registry was not initialized properly"); + } + + if (!shuffle) { + if (tests.empty()) tests.push_back(""); + } else { + // Get the names of all selected tests and their children. + StringVec allTests; + if (tests.empty()) { + getTestNames(allTests, root); + } else { + for (const auto& name: tests) { + getTestNames(allTests, root->findTest(name)); + } + } + // Randomly shuffle the list of names. + std::random_device randDev; + std::mt19937 generator(randDev()); + std::shuffle(allTests.begin(), allTests.end(), generator); + tests.swap(allTests); + } + + CppUnit::TestRunner runner; + runner.addTest(root); + + CppUnit::TestResult controller; + + CppUnit::TestResultCollector result; + controller.addListener(&result); + + CppUnit::TextTestProgressListener progress; + TimedTestProgressListener vProgress; + if (verbose) { + controller.addListener(&vProgress); + } else { + controller.addListener(&progress); + } + + for (size_t i = 0; i < tests.size(); ++i) { + runner.run(controller, tests[i]); + } + + CppUnit::CompilerOutputter outputter(&result, std::cerr); + outputter.write(); + + return result.wasSuccessful() ? EXIT_SUCCESS : EXIT_FAILURE; + + } catch (std::exception& e) { + OPENVDB_LOG_FATAL(e.what()); + return EXIT_FAILURE; + } +} + +} // anonymous namespace + + +int +main(int argc, char *argv[]) +{ + openvdb::logging::initialize(argc, argv); + + return run(argc, argv); +} diff --git a/openvdb/unittest/util.h b/openvdb/unittest/util.h new file mode 100644 index 00000000..a2d0021b --- /dev/null +++ b/openvdb/unittest/util.h @@ -0,0 +1,140 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_UNITTEST_UTIL_HAS_BEEN_INCLUDED +#define OPENVDB_UNITTEST_UTIL_HAS_BEEN_INCLUDED + +#include +#include // for math::Random01 +#include // for pruneLevelSet +#include + +namespace unittest_util { + +enum SphereMode { SPHERE_DENSE, SPHERE_DENSE_NARROW_BAND, SPHERE_SPARSE_NARROW_BAND }; + +/// @brief Generates the signed distance to a sphere located at @a center +/// and with a specified @a radius (both in world coordinates). Only voxels +/// in the domain [0,0,0] -> @a dim are considered. Also note that the +/// level set is either dense, dense narrow-band or sparse narrow-band. +/// +/// @note This method is VERY SLOW and should only be used for debugging purposes! +/// However it works for any transform and even with open level sets. +/// A faster approch for closed narrow band generation is to only set voxels +/// sparsely and then use grid::signedFloodFill to define the sign +/// of the background values and tiles! This is implemented in openvdb/tools/LevelSetSphere.h +template +inline void +makeSphere(const openvdb::Coord& dim, const openvdb::Vec3f& center, float radius, + GridType& grid, SphereMode mode) +{ + typedef typename GridType::ValueType ValueT; + const ValueT + zero = openvdb::zeroVal(), + outside = grid.background(), + inside = -outside; + + typename GridType::Accessor acc = grid.getAccessor(); + openvdb::Coord xyz; + for (xyz[0]=0; xyz[0] +inline void +makeSphere(const openvdb::Coord& dim, const openvdb::Vec3f& center, + float radius, openvdb::BoolGrid& grid, SphereMode) +{ + openvdb::BoolGrid::Accessor acc = grid.getAccessor(); + openvdb::Coord xyz; + for (xyz[0]=0; xyz[0]((p-center).length() - radius); + if (dist <= 0) acc.setValue(xyz, true); + } + } + } +} + +// This method will soon be replaced by the one above!!!!! +template +inline void +makeSphere(const openvdb::Coord& dim, const openvdb::Vec3f& center, float radius, + GridType &grid, float dx, SphereMode mode) +{ + grid.setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/dx)); + makeSphere(dim, center, radius, grid, mode); +} + +// Generate random points by uniformly distributing points +// on a unit-sphere. +inline void genPoints(const int numPoints, std::vector& points) +{ + // init + openvdb::math::Random01 randNumber(0); + const int n = int(std::sqrt(double(numPoints))); + const double xScale = (2.0 * M_PI) / double(n); + const double yScale = M_PI / double(n); + + double x, y, theta, phi; + openvdb::Vec3R pos; + + points.reserve(n*n); + + // loop over a [0 to n) x [0 to n) grid. + for (int a = 0; a < n; ++a) { + for (int b = 0; b < n; ++b) { + + // jitter, move to random pos. inside the current cell + x = double(a) + randNumber(); + y = double(b) + randNumber(); + + // remap to a lat/long map + theta = y * yScale; // [0 to PI] + phi = x * xScale; // [0 to 2PI] + + // convert to cartesian coordinates on a unit sphere. + // spherical coordinate triplet (r=1, theta, phi) + pos[0] = std::sin(theta)*std::cos(phi); + pos[1] = std::sin(theta)*std::sin(phi); + pos[2] = std::cos(theta); + + points.push_back(pos); + } + } +} + +// @todo makePlane + +} // namespace unittest_util + +#endif // OPENVDB_UNITTEST_UTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/util/CpuTimer.h b/openvdb/util/CpuTimer.h new file mode 100644 index 00000000..3db8afc6 --- /dev/null +++ b/openvdb/util/CpuTimer.h @@ -0,0 +1,174 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED + +#include +#include +#include +#include // for std::cerr +#include // for ostringstream +#include // for setprecision +#include "Formats.h"// for printTime + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +/// @brief Simple timer for basic profiling. +/// +/// @code +/// util::CpuTimer timer; +/// // code here will not be timed! +/// timer.start("algorithm"); +/// // code to be timed goes here +/// timer.stop(); +/// @endcode +/// +/// or to time multiple blocks of code +/// +/// @code +/// util::CpuTimer timer("algorithm 1"); +/// // code to be timed goes here +/// timer.restart("algorithm 2"); +/// // code to be timed goes here +/// timer.stop(); +/// @endcode +/// +/// or to measure speedup between multiple runs +/// +/// @code +/// util::CpuTimer timer("algorithm 1"); +/// // code for the first run goes here +/// const double t1 = timer.restart("algorithm 2"); +/// // code for the second run goes here +/// const double t2 = timer.stop(); +/// std::cerr << "Algorithm 1 is " << (t2/t1) +/// << " timers faster than algorithm 2\n"; +/// @endcode +/// +/// or to measure multiple blocks of code with deferred output +/// +/// @code +/// util::CpuTimer timer(); +/// // code here will not be timed! +/// timer.start(); +/// // code for the first run goes here +/// const double t1 = timer.restart();//time in milliseconds +/// // code for the second run goes here +/// const double t2 = timer.restart();//time in milliseconds +/// // code here will not be timed! +/// util::printTime(std::cout, t1, "Algorithm 1 completed in "); +/// util::printTime(std::cout, t2, "Algorithm 2 completed in "); +/// @endcode +class CpuTimer +{ +public: + + /// @brief Initiate timer + CpuTimer(std::ostream& os = std::cerr) : mOutStream(os), mT0(tbb::tick_count::now()) {} + + /// @brief Prints message and start timer. + /// + /// @note Should normally be followed by a call to stop() + CpuTimer(const std::string& msg, std::ostream& os = std::cerr) : mOutStream(os), mT0() { this->start(msg); } + + /// @brief Start timer. + /// + /// @note Should normally be followed by a call to milliseconds() or stop(std::string) + inline void start() { mT0 = tbb::tick_count::now(); } + + /// @brief Print message and start timer. + /// + /// @note Should normally be followed by a call to stop() + inline void start(const std::string& msg) + { + mOutStream << msg << " ..."; + this->start(); + } + + /// @brief Return Time difference in milliseconds since construction or start was called. + /// + /// @note Combine this method with start() to get timing without any outputs. + inline double milliseconds() const + { + tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0; + return 1000.0*dt.seconds(); + } + + /// @brief Return Time difference in seconds since construction or start was called. + /// + /// @note Combine this method with start() to get timing without any outputs. + inline double seconds() const + { + tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0; + return dt.seconds(); + } + + /// @brief This method is identical to milliseconds() - deprecated + OPENVDB_DEPRECATED inline double delta() const { return this->milliseconds(); } + + inline std::string time() const + { + const double msec = this->milliseconds(); + std::ostringstream os; + printTime(os, msec, "", "", 4, 1, 1); + return os.str(); + } + + /// @brief Returns and prints time in milliseconds since construction or start was called. + /// + /// @note Combine this method with start(std::string) to print at start and stop of task being timed. + inline double stop() const + { + const double msec = this->milliseconds(); + printTime(mOutStream, msec, " completed in ", "\n", 4, 3, 1); + return msec; + } + + /// @brief Returns and prints time in milliseconds since construction or start was called. + /// + /// @note Combine this method with start() to delay output of task being timed. + inline double stop(const std::string& msg) const + { + const double msec = this->milliseconds(); + mOutStream << msg << " ..."; + printTime(mOutStream, msec, " completed in ", "\n", 4, 3, 1); + return msec; + } + + /// @brief Re-start timer. + /// @return time in milliseconds since previous start or restart. + /// + /// @note Should normally be followed by a call to stop() or restart() + inline double restart() + { + const double msec = this->milliseconds(); + this->start(); + return msec; + } + + /// @brief Stop previous timer, print message and re-start timer. + /// @return time in milliseconds since previous start or restart. + /// + /// @note Should normally be followed by a call to stop() or restart() + inline double restart(const std::string& msg) + { + const double delta = this->stop(); + this->start(msg); + return delta; + } + +private: + std::ostream& mOutStream; + tbb::tick_count mT0; +};// CpuTimer + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#endif // OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED diff --git a/openvdb/util/Formats.cc b/openvdb/util/Formats.cc new file mode 100644 index 00000000..e7b87331 --- /dev/null +++ b/openvdb/util/Formats.cc @@ -0,0 +1,148 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Formats.h" +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +int +printBytes(std::ostream& os, uint64_t bytes, + const std::string& head, const std::string& tail, + bool exact, int width, int precision) +{ + const uint64_t one = 1; + int group = 0; + + // Write to a string stream so that I/O manipulators like + // std::setprecision() don't alter the output stream. + std::ostringstream ostr; + ostr << head; + ostr << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + if (bytes >> 40) { + ostr << std::setw(width) << (double(bytes) / double(one << 40)) << " TB"; + group = 4; + } else if (bytes >> 30) { + ostr << std::setw(width) << (double(bytes) / double(one << 30)) << " GB"; + group = 3; + } else if (bytes >> 20) { + ostr << std::setw(width) << (double(bytes) / double(one << 20)) << " MB"; + group = 2; + } else if (bytes >> 10) { + ostr << std::setw(width) << (double(bytes) / double(one << 10)) << " KB"; + group = 1; + } else { + ostr << std::setw(width) << bytes << " Bytes"; + } + if (exact && group) ostr << " (" << bytes << " Bytes)"; + ostr << tail; + + os << ostr.str(); + + return group; +} + + +int +printNumber(std::ostream& os, uint64_t number, + const std::string& head, const std::string& tail, + bool exact, int width, int precision) +{ + int group = 0; + + // Write to a string stream so that I/O manipulators like + // std::setprecision() don't alter the output stream. + std::ostringstream ostr; + ostr << head; + ostr << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + if (number / UINT64_C(1000000000000)) { + ostr << std::setw(width) << (double(number) / 1000000000000.0) << " trillion"; + group = 4; + } else if (number / UINT64_C(1000000000)) { + ostr << std::setw(width) << (double(number) / 1000000000.0) << " billion"; + group = 3; + } else if (number / UINT64_C(1000000)) { + ostr << std::setw(width) << (double(number) / 1000000.0) << " million"; + group = 2; + } else if (number / UINT64_C(1000)) { + ostr << std::setw(width) << (double(number) / 1000.0) << " thousand"; + group = 1; + } else { + ostr << std::setw(width) << number; + } + if (exact && group) ostr << " (" << number << ")"; + ostr << tail; + + os << ostr.str(); + + return group; +} + +int +printTime(std::ostream& os, double milliseconds, + const std::string& head, const std::string& tail, + int width, int precision, int verbose) + { + int group = 0; + + // Write to a string stream so that I/O manipulators like + // std::setprecision() don't alter the output stream. + std::ostringstream ostr; + ostr << head; + ostr << std::setprecision(precision) << std::setiosflags(std::ios::fixed); + + if (milliseconds >= 1000.0) {// one second or longer + const uint32_t seconds = static_cast(milliseconds / 1000.0) % 60 ; + const uint32_t minutes = static_cast(milliseconds / (1000.0*60)) % 60; + const uint32_t hours = static_cast(milliseconds / (1000.0*60*60)) % 24; + const uint32_t days = static_cast(milliseconds / (1000.0*60*60*24)); + if (days>0) { + ostr << days << (verbose==0 ? "d " : days>1 ? " days, " : " day, "); + group = 4; + } + if (hours>0) { + ostr << hours << (verbose==0 ? "h " : hours>1 ? " hours, " : " hour, "); + if (!group) group = 3; + } + if (minutes>0) { + ostr << minutes << (verbose==0 ? "m " : minutes>1 ? " minutes, " : " minute, "); + if (!group) group = 2; + } + if (seconds>0) { + if (verbose) { + ostr << seconds << (seconds>1 ? " seconds and " : " second and "); + const double msec = milliseconds - (seconds + (minutes + (hours + days * 24) * 60) * 60) * 1000.0; + ostr << std::setw(width) << msec << " milliseconds (" << milliseconds << "ms)"; + } else { + const double sec = milliseconds/1000.0 - (minutes + (hours + days * 24) * 60) * 60; + ostr << std::setw(width) << sec << "s"; + } + } else {// zero seconds + const double msec = milliseconds - (minutes + (hours + days * 24) * 60) * 60 * 1000.0; + if (verbose) { + ostr << std::setw(width) << msec << " milliseconds (" << milliseconds << "ms)"; + } else { + ostr << std::setw(width) << msec << "ms"; + } + } + if (!group) group = 1; + } else {// less than a second + ostr << std::setw(width) << milliseconds << (verbose ? " milliseconds" : "ms"); + } + + ostr << tail; + + os << ostr.str(); + + return group; + } + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/util/Formats.h b/openvdb/util/Formats.h new file mode 100644 index 00000000..e603891a --- /dev/null +++ b/openvdb/util/Formats.h @@ -0,0 +1,124 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file Formats.h +/// +/// @brief Utility routines to output nicely-formatted numeric values + + +#ifndef OPENVDB_UTIL_FORMATS_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_FORMATS_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +/// Output a byte count with the correct binary suffix (KB, MB, GB or TB). +/// @param os the output stream +/// @param bytes the byte count to be output +/// @param head a string to be output before the numeric text +/// @param tail a string to be output after the numeric text +/// @param exact if true, also output the unmodified count, e.g., "4.6 KB (4620 Bytes)" +/// @param width a fixed width for the numeric text +/// @param precision the number of digits after the decimal point +/// @return 0, 1, 2, 3 or 4, denoting the order of magnitude of the count. +OPENVDB_API int +printBytes(std::ostream& os, uint64_t bytes, + const std::string& head = "", + const std::string& tail = "\n", + bool exact = false, int width = 8, int precision = 3); + +/// Output a number with the correct SI suffix (thousand, million, billion or trillion) +/// @param os the output stream +/// @param number the number to be output +/// @param head a string to be output before the numeric text +/// @param tail a string to be output after the numeric text +/// @param exact if true, also output the unmodified count, e.g., "4.6 Thousand (4620)" +/// @param width a fixed width for the numeric text +/// @param precision the number of digits after the decimal point +/// @return 0, 1, 2, 3 or 4, denoting the order of magnitude of the number. +OPENVDB_API int +printNumber(std::ostream& os, uint64_t number, + const std::string& head = "", + const std::string& tail = "\n", + bool exact = true, int width = 8, int precision = 3); + +/// Output a time in milliseconds with the correct suffix (days, hours, minutes, seconds and milliseconds) +/// @param os the output stream +/// @param milliseconds the time to be output +/// @param head a string to be output before the time +/// @param tail a string to be output after the time +/// @param width a fixed width for the numeric text +/// @param precision the number of digits after the decimal point +/// @param verbose verbose level, 0 is compact format and 1 is long format +/// @return 0, 1, 2, 3, or 4 denoting the order of magnitude of the time. +OPENVDB_API int +printTime(std::ostream& os, double milliseconds, + const std::string& head = "", + const std::string& tail = "\n", + int width = 4, int precision = 1, int verbose = 0); + + +//////////////////////////////////////// + + +/// @brief I/O manipulator that formats integer values with thousands separators +template +class FormattedInt +{ +public: + static char sep() { return ','; } + + FormattedInt(IntT n): mInt(n) {} + + std::ostream& put(std::ostream& os) const + { + // Convert the integer to a string. + std::ostringstream ostr; + ostr << mInt; + std::string s = ostr.str(); + // Prefix the string with spaces if its length is not a multiple of three. + size_t padding = (s.size() % 3) ? 3 - (s.size() % 3) : 0; + s = std::string(padding, ' ') + s; + // Construct a new string in which groups of three digits are followed + // by a separator character. + ostr.str(""); + for (size_t i = 0, N = s.size(); i < N; ) { + ostr << s[i]; + ++i; + if (i >= padding && i % 3 == 0 && i < s.size()) { + ostr << sep(); + } + } + // Remove any padding that was added and output the string. + s = ostr.str(); + os << s.substr(padding, s.size()); + return os; + } + +private: + IntT mInt; +}; + +template +std::ostream& operator<<(std::ostream& os, const FormattedInt& n) { return n.put(os); } + +/// @return an I/O manipulator that formats the given integer value for output to a stream. +template +FormattedInt formattedInt(IntT n) { return FormattedInt(n); } + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_FORMATS_HAS_BEEN_INCLUDED diff --git a/openvdb/util/MapsUtil.h b/openvdb/util/MapsUtil.h new file mode 100644 index 00000000..16c2c8e1 --- /dev/null +++ b/openvdb/util/MapsUtil.h @@ -0,0 +1,294 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file MapsUtil.h + +#ifndef OPENVDB_UTIL_MAPSUTIL_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_MAPSUTIL_HAS_BEEN_INCLUDED + +#include +#include // for std::min(), std::max() +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +// Utility methods for calculating bounding boxes + +/// @brief Calculate an axis-aligned bounding box in the given map's domain +/// (e.g., index space) from an axis-aligned bounding box in its range +/// (e.g., world space) +template +inline void +calculateBounds(const MapType& map, const BBoxd& in, BBoxd& out) +{ + const Vec3d& min = in.min(); + const Vec3d& max = in.max(); + + // the pre-image of the 8 corners of the box + Vec3d corners[8]; + corners[0] = in.min();; + corners[1] = Vec3d(min(0), min(1), min(2)); + corners[2] = Vec3d(max(0), max(1), min(2)); + corners[3] = Vec3d(min(0), max(1), min(2)); + corners[4] = Vec3d(min(0), min(1), max(2)); + corners[5] = Vec3d(max(0), min(1), max(2)); + corners[6] = max; + corners[7] = Vec3d(min(0), max(1), max(2)); + + Vec3d pre_image; + Vec3d& out_min = out.min(); + Vec3d& out_max = out.max(); + out_min = map.applyInverseMap(corners[0]); + out_max = min; + for (int i = 1; i < 8; ++i) { + pre_image = map.applyInverseMap(corners[i]); + for (int j = 0; j < 3; ++j) { + out_min(j) = std::min( out_min(j), pre_image(j)); + out_max(j) = std::max( out_max(j), pre_image(j)); + } + } +} + + +/// @brief Calculate an axis-aligned bounding box in the given map's domain +/// from a spherical bounding box in its range. +template +inline void +calculateBounds(const MapType& map, const Vec3d& center, const Real radius, BBoxd& out) +{ + // On return, out gives a bounding box in continuous index space + // that encloses the sphere. + // + // the image of a sphere under the inverse of the linearMap will be an ellipsoid. + + if (math::is_linear::value) { + // I want to find extrema for three functions f(x', y', z') = x', or = y', or = z' + // with the constraint that g = (x-xo)^2 + (y-yo)^2 + (z-zo)^2 = r^2. + // Where the point x,y,z is the image of x',y',z' + // Solve: \lambda Grad(g) = Grad(f) and g = r^2. + // Note: here (x,y,z) is the image of (x',y',z'), and the gradient + // is w.r.t the (') space. + // + // This can be solved exactly: e_a^T (x' -xo') =\pm r\sqrt(e_a^T J^(-1)J^(-T)e_a) + // where e_a is one of the three unit vectors. - djh. + + /// find the image of the center of the sphere + Vec3d center_pre_image = map.applyInverseMap(center); + + std::vector coordinate_units; + coordinate_units.push_back(Vec3d(1,0,0)); + coordinate_units.push_back(Vec3d(0,1,0)); + coordinate_units.push_back(Vec3d(0,0,1)); + + Vec3d& out_min = out.min(); + Vec3d& out_max = out.max(); + for (int direction = 0; direction < 3; ++direction) { + Vec3d temp = map.applyIJT(coordinate_units[direction]); + double offset = + radius * sqrt(temp.x()*temp.x() + temp.y()*temp.y() + temp.z()*temp.z()); + out_min(direction) = center_pre_image(direction) - offset; + out_max(direction) = center_pre_image(direction) + offset; + } + + } else { + // This is some unknown map type. In this case, we form an axis-aligned + // bounding box for the sphere in world space and find the pre-images of + // the corners in index space. From these corners we compute an axis-aligned + // bounding box in index space. + BBoxd bounding_box(center - radius*Vec3d(1,1,1), center + radius*Vec3d(1,1,1)); + calculateBounds(map, bounding_box, out); + } +} + + +namespace { // anonymous namespace for this helper function + +/// @brief Find the intersection of a line passing through the point +/// (x=0, z=−1/g) with the circle +/// (x − xo)² + (z − zo)² = r² +/// at a point tangent to the circle. +/// @return 0 if the focal point (0, -1/g) is inside the circle, +/// 1 if the focal point touches the circle, or 2 when both points are found. +inline int +findTangentPoints(const double g, const double xo, const double zo, + const double r, double& xp, double& zp, double& xm, double& zm) +{ + double x2 = xo * xo; + double r2 = r * r; + double xd = g * xo; + double xd2 = xd*xd; + double zd = g * zo + 1.; + double zd2 = zd*zd; + double rd2 = r2*g*g; + + double distA = xd2 + zd2; + double distB = distA - rd2; + + if (distB > 0) { + double discriminate = sqrt(distB); + + xp = xo - xo*rd2/distA + r * zd *discriminate / distA; + xm = xo - xo*rd2/distA - r * zd *discriminate / distA; + + zp = (zo*zd2 + zd*g*(x2 - r2) - xo*xo*g - r*xd*discriminate) / distA; + zm = (zo*zd2 + zd*g*(x2 - r2) - xo*xo*g + r*xd*discriminate) / distA; + + return 2; + + } if (0 >= distB && distB >= -1e-9) { + // the circle touches the focal point (x=0, z = -1/g) + xp = 0; xm = 0; + zp = -1/g; zm = -1/g; + + return 1; + } + + return 0; +} + +} // end anonymous namespace + + +/// @brief Calculate an axis-aligned bounding box in index space +/// from a spherical bounding box in world space. +/// @note This specialization is optimized for a frustum map +template<> +inline void +calculateBounds(const math::NonlinearFrustumMap& frustum, + const Vec3d& center, const Real radius, BBoxd& out) +{ + // The frustum is a nonlinear map followed by a uniform scale, rotation, translation. + // First we invert the translation, rotation and scale to find the spherical pre-image + // of the sphere in "local" coordinates where the frustum is aligned with the near plane + // on the z=0 plane and the "camera" is located at (x=0, y=0, z=-1/g). + + // check that the internal map has no shear. + const math::AffineMap& secondMap = frustum.secondMap(); + // test if the linear part has shear or non-uniform scaling + if (!frustum.hasSimpleAffine()) { + + // In this case, we form an axis-aligned bounding box for sphere in world space + // and find the pre_images of the corners in voxel space. From these corners we + // compute an axis-algined bounding box in voxel-spae + BBoxd bounding_box(center - radius*Vec3d(1,1,1), center + radius*Vec3d(1,1,1)); + calculateBounds(frustum, bounding_box, out); + return; + } + + // for convenience + Vec3d& out_min = out.min(); + Vec3d& out_max = out.max(); + + Vec3d centerLS = secondMap.applyInverseMap(center); + Vec3d voxelSize = secondMap.voxelSize(); + + // all the voxels have the same size since we know this is a simple affine map + double radiusLS = radius / voxelSize(0); + + double gamma = frustum.getGamma(); + double xp; + double zp; + double xm; + double zm; + int soln_number; + + // the bounding box in index space for the points in the frustum + const BBoxd& bbox = frustum.getBBox(); + // initialize min and max + const double x_min = bbox.min().x(); + const double y_min = bbox.min().y(); + const double z_min = bbox.min().z(); + + const double x_max = bbox.max().x(); + const double y_max = bbox.max().y(); + const double z_max = bbox.max().z(); + + out_min.x() = x_min; + out_max.x() = x_max; + out_min.y() = y_min; + out_max.y() = y_max; + + Vec3d extreme; + Vec3d extreme2; + Vec3d pre_image; + // find the x-range + soln_number = findTangentPoints(gamma, centerLS.x(), centerLS.z(), radiusLS, xp, zp, xm, zm); + if (soln_number == 2) { + extreme.x() = xp; + extreme.y() = centerLS.y(); + extreme.z() = zp; + + // location in world space of the tangent point + extreme2 = secondMap.applyMap(extreme); + // convert back to voxel space + pre_image = frustum.applyInverseMap(extreme2); + out_max.x() = std::max(x_min, std::min(x_max, pre_image.x())); + + extreme.x() = xm; + extreme.y() = centerLS.y(); + extreme.z() = zm; + // location in world space of the tangent point + extreme2 = secondMap.applyMap(extreme); + + // convert back to voxel space + pre_image = frustum.applyInverseMap(extreme2); + out_min.x() = std::max(x_min, std::min(x_max, pre_image.x())); + + } else if (soln_number == 1) { + // the circle was tangent at the focal point + } else if (soln_number == 0) { + // the focal point was inside the circle + } + + // find the y-range + soln_number = findTangentPoints(gamma, centerLS.y(), centerLS.z(), radiusLS, xp, zp, xm, zm); + if (soln_number == 2) { + extreme.x() = centerLS.x(); + extreme.y() = xp; + extreme.z() = zp; + + // location in world space of the tangent point + extreme2 = secondMap.applyMap(extreme); + // convert back to voxel space + pre_image = frustum.applyInverseMap(extreme2); + out_max.y() = std::max(y_min, std::min(y_max, pre_image.y())); + + extreme.x() = centerLS.x(); + extreme.y() = xm; + extreme.z() = zm; + extreme2 = secondMap.applyMap(extreme); + + // convert back to voxel space + pre_image = frustum.applyInverseMap(extreme2); + out_min.y() = std::max(y_min, std::min(y_max, pre_image.y())); + + } else if (soln_number == 1) { + // the circle was tangent at the focal point + } else if (soln_number == 0) { + // the focal point was inside the circle + } + + // the near and far + // the closest point. The front of the frustum is at 0 in index space + double near_dist = std::max(centerLS.z() - radiusLS, 0.); + // the farthest point. The back of the frustum is at mDepth in index space + double far_dist = std::min(centerLS.z() + radiusLS, frustum.getDepth() ); + + Vec3d near_point(0.f, 0.f, near_dist); + Vec3d far_point(0.f, 0.f, far_dist); + + out_min.z() = std::max(z_min, frustum.applyInverseMap(secondMap.applyMap(near_point)).z()); + out_max.z() = std::min(z_max, frustum.applyInverseMap(secondMap.applyMap(far_point)).z()); + +} + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_MAPSUTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/util/Name.h b/openvdb/util/Name.h new file mode 100644 index 00000000..c5e362a6 --- /dev/null +++ b/openvdb/util/Name.h @@ -0,0 +1,41 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_UTIL_NAME_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_NAME_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +typedef std::string Name; + +inline Name +readString(std::istream& is) +{ + uint32_t size; + is.read(reinterpret_cast(&size), sizeof(uint32_t)); + std::string buffer(size, ' '); + if (size>0) is.read(&buffer[0], size); + return buffer; +} + + +inline void +writeString(std::ostream& os, const Name& name) +{ + uint32_t size = uint32_t(name.size()); + os.write(reinterpret_cast(&size), sizeof(uint32_t)); + os.write(&name[0], size); +} + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_NAME_HAS_BEEN_INCLUDED diff --git a/openvdb/util/NodeMasks.h b/openvdb/util/NodeMasks.h new file mode 100644 index 00000000..6434fb6f --- /dev/null +++ b/openvdb/util/NodeMasks.h @@ -0,0 +1,1415 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @author Ken Museth +/// +/// @file NodeMasks.h + +#ifndef OPENVDB_UTIL_NODEMASKS_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_NODEMASKS_HAS_BEEN_INCLUDED + +#include // for std::min() +#include +#include +#include // for cout +#include +#include +//#include +//#include // for ffs + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +/// Return the number of on bits in the given 8-bit value. +inline Index32 +CountOn(Byte v) +{ +#if defined(OPENVDB_USE_SSE42) && defined(_MSC_VER) + return __popcnt16(v); +#elif defined(OPENVDB_USE_SSE42) && (defined(__GNUC__) || defined(__clang__)) + return __builtin_popcount(v); +#else + // Software Implementation - Simple LUT + static const Byte numBits[256] = { +#define COUNTONB2(n) n, n+1, n+1, n+2 +#define COUNTONB4(n) COUNTONB2(n), COUNTONB2(n+1), COUNTONB2(n+1), COUNTONB2(n+2) +#define COUNTONB6(n) COUNTONB4(n), COUNTONB4(n+1), COUNTONB4(n+1), COUNTONB4(n+2) + COUNTONB6(0), COUNTONB6(1), COUNTONB6(1), COUNTONB6(2) + }; + return numBits[v]; +#undef COUNTONB6 +#undef COUNTONB4 +#undef COUNTONB2 +#endif +} + +/// Return the number of off bits in the given 8-bit value. +inline Index32 CountOff(Byte v) { return CountOn(static_cast(~v)); } + +/// Return the number of on bits in the given 32-bit value. +inline Index32 +CountOn(Index32 v) +{ + v = v - ((v >> 1) & 0x55555555U); + v = (v & 0x33333333U) + ((v >> 2) & 0x33333333U); + return (((v + (v >> 4)) & 0xF0F0F0FU) * 0x1010101U) >> 24; +} + +/// Return the number of off bits in the given 32-bit value. +inline Index32 CountOff(Index32 v) { return CountOn(~v); } + +/// Return the number of on bits in the given 64-bit value. +inline Index32 +CountOn(Index64 v) +{ +#if defined(OPENVDB_USE_SSE42) && defined(_MSC_VER) && defined(_M_X64) + v = __popcnt64(v); +#elif defined(OPENVDB_USE_SSE42) && (defined(__GNUC__) || defined(__clang__)) + v = __builtin_popcountll(v); +#else + // Software Implementation + v = v - ((v >> 1) & UINT64_C(0x5555555555555555)); + v = (v & UINT64_C(0x3333333333333333)) + ((v >> 2) & UINT64_C(0x3333333333333333)); + v = (((v + (v >> 4)) & UINT64_C(0xF0F0F0F0F0F0F0F)) * UINT64_C(0x101010101010101)) >> 56; +#endif + return static_cast(v); +} + +/// Return the number of off bits in the given 64-bit value. +inline Index32 CountOff(Index64 v) { return CountOn(~v); } + +/// Return the least significant on bit of the given 8-bit value. +inline Index32 +FindLowestOn(Byte v) +{ + assert(v); +#if defined(OPENVDB_USE_SSE42) && defined(_MSC_VER) + unsigned long index; + _BitScanForward(&index, static_cast(v)); + return static_cast(index); +#elif defined(OPENVDB_USE_SSE42) && (defined(__GNUC__) || defined(__clang__)) + return __builtin_ctz(v); +#else + // Software Implementation + static const Byte DeBruijn[8] = {0, 1, 6, 2, 7, 5, 4, 3}; + return DeBruijn[Byte((v & -v) * 0x1DU) >> 5]; +#endif +} + +/// Return the least significant on bit of the given 32-bit value. +inline Index32 +FindLowestOn(Index32 v) +{ + assert(v); + //return ffs(v); + static const Byte DeBruijn[32] = { + 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, + 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9 + }; + return DeBruijn[Index32((v & -v) * 0x077CB531U) >> 27]; +} + +/// Return the least significant on bit of the given 64-bit value. +inline Index32 +FindLowestOn(Index64 v) +{ + assert(v); +#if defined(OPENVDB_USE_SSE42) && defined(_MSC_VER) + unsigned long index; + _BitScanForward64(&index, v); + return static_cast(index); +#elif defined(OPENVDB_USE_SSE42) && (defined(__GNUC__) || defined(__clang__)) + return static_cast(__builtin_ctzll(v)); +#else + // Software Implementation + static const Byte DeBruijn[64] = { + 0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28, + 62, 5, 39, 46, 44, 42, 22, 9, 24, 35, 59, 56, 49, 18, 29, 11, + 63, 52, 6, 26, 37, 40, 33, 47, 61, 45, 43, 21, 23, 58, 17, 10, + 51, 25, 36, 32, 60, 20, 57, 16, 50, 31, 19, 15, 30, 14, 13, 12, + }; + return DeBruijn[Index64((v & -v) * UINT64_C(0x022FDD63CC95386D)) >> 58]; +#endif +} + +/// Return the most significant on bit of the given 32-bit value. +inline Index32 +FindHighestOn(Index32 v) +{ + static const Byte DeBruijn[32] = { + 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, + 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 + }; + v |= v >> 1; // first round down to one less than a power of 2 + v |= v >> 2; + v |= v >> 4; + v |= v >> 8; + v |= v >> 16; + return DeBruijn[Index32(v * 0x07C4ACDDU) >> 27]; +} + + +//////////////////////////////////////// + + +/// Base class for the bit mask iterators +template +class BaseMaskIterator +{ +protected: + Index32 mPos; // bit position + const NodeMask* mParent; // this iterator can't change the parent_mask! + +public: + BaseMaskIterator(): mPos(NodeMask::SIZE), mParent(nullptr) {} + BaseMaskIterator(const BaseMaskIterator&) = default; + BaseMaskIterator(Index32 pos, const NodeMask* parent): mPos(pos), mParent(parent) + { + assert((parent == nullptr && pos == 0) || (parent != nullptr && pos <= NodeMask::SIZE)); + } + bool operator==(const BaseMaskIterator &iter) const {return mPos == iter.mPos;} + bool operator!=(const BaseMaskIterator &iter) const {return mPos != iter.mPos;} + bool operator< (const BaseMaskIterator &iter) const {return mPos < iter.mPos;} + BaseMaskIterator& operator=(const BaseMaskIterator& iter) + { + mPos = iter.mPos; mParent = iter.mParent; return *this; + } + Index32 offset() const { return mPos; } + Index32 pos() const { return mPos; } + bool test() const { assert(mPos <= NodeMask::SIZE); return (mPos != NodeMask::SIZE); } + operator bool() const { return this->test(); } +}; // class BaseMaskIterator + + +/// @note This happens to be a const-iterator! +template +class OnMaskIterator: public BaseMaskIterator +{ +private: + using BaseType = BaseMaskIterator; + using BaseType::mPos;//bit position; + using BaseType::mParent;//this iterator can't change the parent_mask! +public: + OnMaskIterator() : BaseType() {} + OnMaskIterator(Index32 pos,const NodeMask *parent) : BaseType(pos,parent) {} + void increment() + { + assert(mParent != nullptr); + mPos = mParent->findNextOn(mPos+1); + assert(mPos <= NodeMask::SIZE); + } + void increment(Index n) { while(n-- && this->next()) ; } + bool next() + { + this->increment(); + return this->test(); + } + bool operator*() const {return true;} + OnMaskIterator& operator++() + { + this->increment(); + return *this; + } +}; // class OnMaskIterator + + +template +class OffMaskIterator: public BaseMaskIterator +{ +private: + using BaseType = BaseMaskIterator; + using BaseType::mPos;//bit position; + using BaseType::mParent;//this iterator can't change the parent_mask! +public: + OffMaskIterator() : BaseType() {} + OffMaskIterator(Index32 pos,const NodeMask *parent) : BaseType(pos,parent) {} + void increment() + { + assert(mParent != nullptr); + mPos=mParent->findNextOff(mPos+1); + assert(mPos <= NodeMask::SIZE); + } + void increment(Index n) { while(n-- && this->next()) ; } + bool next() + { + this->increment(); + return this->test(); + } + bool operator*() const {return false;} + OffMaskIterator& operator++() + { + this->increment(); + return *this; + } +}; // class OffMaskIterator + + +template +class DenseMaskIterator: public BaseMaskIterator +{ +private: + using BaseType = BaseMaskIterator; + using BaseType::mPos;//bit position; + using BaseType::mParent;//this iterator can't change the parent_mask! + +public: + DenseMaskIterator() : BaseType() {} + DenseMaskIterator(Index32 pos,const NodeMask *parent) : BaseType(pos,parent) {} + void increment() + { + assert(mParent != nullptr); + mPos += 1;//careful - the increment might go beyond the end + assert(mPos<= NodeMask::SIZE); + } + void increment(Index n) { while(n-- && this->next()) ; } + bool next() + { + this->increment(); + return this->test(); + } + bool operator*() const {return mParent->isOn(mPos);} + DenseMaskIterator& operator++() + { + this->increment(); + return *this; + } +}; // class DenseMaskIterator + + +/// @brief Bit mask for the internal and leaf nodes of VDB. This +/// is a 64-bit implementation. +/// +/// @note A template specialization for Log2Dim=1 and Log2Dim=2 are +/// given below. +template +class NodeMask +{ +public: + static_assert(Log2Dim > 2, "expected NodeMask template specialization, got base template"); + + static const Index32 LOG2DIM = Log2Dim; + static const Index32 DIM = 1<> 6;// 2^6=64 + using Word = Index64; + +private: + + // The bits are represented as a linear array of Words, and the + // size of a Word is 32 or 64 bits depending on the platform. + // The BIT_MASK is defined as the number of bits in a Word - 1 + //static const Index32 BIT_MASK = sizeof(void*) == 8 ? 63 : 31; + //static const Index32 LOG2WORD = BIT_MASK == 63 ? 6 : 5; + //static const Index32 WORD_COUNT = SIZE >> LOG2WORD; + //using Word = boost::mpl::if_c::type; + + Word mWords[WORD_COUNT];//only member data! + +public: + /// Default constructor sets all bits off + NodeMask() { this->setOff(); } + /// All bits are set to the specified state + NodeMask(bool on) { this->set(on); } + /// Copy constructor + NodeMask(const NodeMask &other) { *this = other; } + /// Destructor + ~NodeMask() {} + /// Assignment operator + NodeMask& operator=(const NodeMask& other) + { + Index32 n = WORD_COUNT; + const Word* w2 = other.mWords; + for (Word* w1 = mWords; n--; ++w1, ++w2) *w1 = *w2; + return *this; + } + + using OnIterator = OnMaskIterator; + using OffIterator = OffMaskIterator; + using DenseIterator = DenseMaskIterator; + + OnIterator beginOn() const { return OnIterator(this->findFirstOn(),this); } + OnIterator endOn() const { return OnIterator(SIZE,this); } + OffIterator beginOff() const { return OffIterator(this->findFirstOff(),this); } + OffIterator endOff() const { return OffIterator(SIZE,this); } + DenseIterator beginDense() const { return DenseIterator(0,this); } + DenseIterator endDense() const { return DenseIterator(SIZE,this); } + + bool operator == (const NodeMask &other) const + { + int n = WORD_COUNT; + for (const Word *w1=mWords, *w2=other.mWords; n-- && *w1++ == *w2++;) ; + return n == -1; + } + + bool operator != (const NodeMask &other) const { return !(*this == other); } + + // + // Bitwise logical operations + // + + /// @brief Apply a functor to the words of the this and the other mask. + /// + /// @details An example that implements the "operator&=" method: + /// @code + /// struct Op { inline void operator()(W &w1, const W& w2) const { w1 &= w2; } }; + /// @endcode + template + const NodeMask& foreach(const NodeMask& other, const WordOp& op) + { + Word *w1 = mWords; + const Word *w2 = other.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2) op( *w1, *w2); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const WordOp& op) + { + Word *w1 = mWords; + const Word *w2 = other1.mWords, *w3 = other2.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2, ++w3) op( *w1, *w2, *w3); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const NodeMask& other3, + const WordOp& op) + { + Word *w1 = mWords; + const Word *w2 = other1.mWords, *w3 = other2.mWords, *w4 = other3.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2, ++w3, ++w4) op( *w1, *w2, *w3, *w4); + return *this; + } + /// @brief Bitwise intersection + const NodeMask& operator&=(const NodeMask& other) + { + Word *w1 = mWords; + const Word *w2 = other.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2) *w1 &= *w2; + return *this; + } + /// @brief Bitwise union + const NodeMask& operator|=(const NodeMask& other) + { + Word *w1 = mWords; + const Word *w2 = other.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2) *w1 |= *w2; + return *this; + } + /// @brief Bitwise difference + const NodeMask& operator-=(const NodeMask& other) + { + Word *w1 = mWords; + const Word *w2 = other.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2) *w1 &= ~*w2; + return *this; + } + /// @brief Bitwise XOR + const NodeMask& operator^=(const NodeMask& other) + { + Word *w1 = mWords; + const Word *w2 = other.mWords; + for (Index32 n = WORD_COUNT; n--; ++w1, ++w2) *w1 ^= *w2; + return *this; + } + NodeMask operator!() const { NodeMask m(*this); m.toggle(); return m; } + NodeMask operator&(const NodeMask& other) const { NodeMask m(*this); m &= other; return m; } + NodeMask operator|(const NodeMask& other) const { NodeMask m(*this); m |= other; return m; } + NodeMask operator^(const NodeMask& other) const { NodeMask m(*this); m ^= other; return m; } + + /// Return the byte size of this NodeMask + static Index32 memUsage() { return static_cast(WORD_COUNT*sizeof(Word)); } + /// Return the total number of on bits + Index32 countOn() const + { + Index32 sum = 0, n = WORD_COUNT; + for (const Word* w = mWords; n--; ++w) sum += CountOn(*w); + return sum; + } + /// Return the total number of on bits + Index32 countOff() const { return SIZE-this->countOn(); } + /// Set the nth bit on + void setOn(Index32 n) { + assert( (n >> 6) < WORD_COUNT ); + mWords[n >> 6] |= Word(1) << (n & 63); + } + /// Set the nth bit off + void setOff(Index32 n) { + assert( (n >> 6) < WORD_COUNT ); + mWords[n >> 6] &= ~(Word(1) << (n & 63)); + } + /// Set the nth bit to the specified state + void set(Index32 n, bool On) { On ? this->setOn(n) : this->setOff(n); } + /// Set all bits to the specified state + void set(bool on) + { + const Word state = on ? ~Word(0) : Word(0); + Index32 n = WORD_COUNT; + for (Word* w = mWords; n--; ++w) *w = state; + } + /// Set all bits on + void setOn() + { + Index32 n = WORD_COUNT; + for (Word* w = mWords; n--; ++w) *w = ~Word(0); + } + /// Set all bits off + void setOff() + { + Index32 n = WORD_COUNT; + for (Word* w = mWords; n--; ++w) *w = Word(0); + } + /// Toggle the state of the nth bit + void toggle(Index32 n) { + assert( (n >> 6) < WORD_COUNT ); + mWords[n >> 6] ^= Word(1) << (n & 63); + } + /// Toggle the state of all bits in the mask + void toggle() + { + Index32 n = WORD_COUNT; + for (Word* w = mWords; n--; ++w) *w = ~*w; + } + /// Set the first bit on + void setFirstOn() { this->setOn(0); } + /// Set the last bit on + void setLastOn() { this->setOn(SIZE-1); } + /// Set the first bit off + void setFirstOff() { this->setOff(0); } + /// Set the last bit off + void setLastOff() { this->setOff(SIZE-1); } + /// Return @c true if the nth bit is on + bool isOn(Index32 n) const + { + assert( (n >> 6) < WORD_COUNT ); + return 0 != (mWords[n >> 6] & (Word(1) << (n & 63))); + } + /// Return @c true if the nth bit is off + bool isOff(Index32 n) const {return !this->isOn(n); } + /// Return @c true if all the bits are on + bool isOn() const + { + int n = WORD_COUNT; + for (const Word *w = mWords; n-- && *w++ == ~Word(0);) ; + return n == -1; + } + /// Return @c true if all the bits are off + bool isOff() const + { + int n = WORD_COUNT; + for (const Word *w = mWords; n-- && *w++ == Word(0);) ; + return n == -1; + } + /// Return @c true if bits are either all off OR all on. + /// @param isOn Takes on the values of all bits if the method + /// returns true - else it is undefined. + bool isConstant(bool &isOn) const + { + isOn = (mWords[0] == ~Word(0));//first word has all bits on + if ( !isOn && mWords[0] != Word(0)) return false;//early out + const Word *w = mWords + 1, *n = mWords + WORD_COUNT; + while( wnth word of the bit mask, for a word of arbitrary size. + template + WordT getWord(Index n) const + { + assert(n*8*sizeof(WordT) < SIZE); + return reinterpret_cast(mWords)[n]; + } + template + WordT& getWord(Index n) + { + assert(n*8*sizeof(WordT) < SIZE); + return reinterpret_cast(mWords)[n]; + } + //@} + + void save(std::ostream& os) const + { + os.write(reinterpret_cast(mWords), this->memUsage()); + } + void load(std::istream& is) { is.read(reinterpret_cast(mWords), this->memUsage()); } + void seek(std::istream& is) const { is.seekg(this->memUsage(), std::ios_base::cur); } + /// @brief simple print method for debugging + void printInfo(std::ostream& os=std::cout) const + { + os << "NodeMask: Dim=" << DIM << " Log2Dim=" << Log2Dim + << " Bit count=" << SIZE << " word count=" << WORD_COUNT << std::endl; + } + void printBits(std::ostream& os=std::cout, Index32 max_out=80u) const + { + const Index32 n=(SIZE>max_out ? max_out : SIZE); + for (Index32 i=0; i < n; ++i) { + if ( !(i & 63) ) + os << "||"; + else if ( !(i%8) ) + os << "|"; + os << this->isOn(i); + } + os << "|" << std::endl; + } + void printAll(std::ostream& os=std::cout, Index32 max_out=80u) const + { + this->printInfo(os); + this->printBits(os, max_out); + } + + Index32 findNextOn(Index32 start) const + { + Index32 n = start >> 6;//initiate + if (n >= WORD_COUNT) return SIZE; // check for out of bounds + Index32 m = start & 63; + Word b = mWords[n]; + if (b & (Word(1) << m)) return start;//simpel case: start is on + b &= ~Word(0) << m;// mask out lower bits + while(!b && ++n> 6;//initiate + if (n >= WORD_COUNT) return SIZE; // check for out of bounds + Index32 m = start & 63; + Word b = ~mWords[n]; + if (b & (Word(1) << m)) return start;//simpel case: start is on + b &= ~Word(0) << m;// mask out lower bits + while(!b && ++n +class NodeMask<1> +{ +public: + + static const Index32 LOG2DIM = 1; + static const Index32 DIM = 2; + static const Index32 SIZE = 8; + static const Index32 WORD_COUNT = 1; + using Word = Byte; + +private: + + Byte mByte;//only member data! + +public: + /// Default constructor sets all bits off + NodeMask() : mByte(0x00U) {} + /// All bits are set to the specified state + NodeMask(bool on) : mByte(on ? 0xFFU : 0x00U) {} + /// Copy constructor + NodeMask(const NodeMask &other) : mByte(other.mByte) {} + /// Destructor + ~NodeMask() {} + /// Assignment operator + void operator = (const NodeMask &other) { mByte = other.mByte; } + + using OnIterator = OnMaskIterator; + using OffIterator = OffMaskIterator; + using DenseIterator = DenseMaskIterator; + + OnIterator beginOn() const { return OnIterator(this->findFirstOn(),this); } + OnIterator endOn() const { return OnIterator(SIZE,this); } + OffIterator beginOff() const { return OffIterator(this->findFirstOff(),this); } + OffIterator endOff() const { return OffIterator(SIZE,this); } + DenseIterator beginDense() const { return DenseIterator(0,this); } + DenseIterator endDense() const { return DenseIterator(SIZE,this); } + + bool operator == (const NodeMask &other) const { return mByte == other.mByte; } + + bool operator != (const NodeMask &other) const {return mByte != other.mByte; } + + // + // Bitwise logical operations + // + + /// @brief Apply a functor to the words of the this and the other mask. + /// + /// @details An example that implements the "operator&=" method: + /// @code + /// struct Op { inline void operator()(Word &w1, const Word& w2) const { w1 &= w2; } }; + /// @endcode + template + const NodeMask& foreach(const NodeMask& other, const WordOp& op) + { + op(mByte, other.mByte); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const WordOp& op) + { + op(mByte, other1.mByte, other2.mByte); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const NodeMask& other3, + const WordOp& op) + { + op(mByte, other1.mByte, other2.mByte, other3.mByte); + return *this; + } + /// @brief Bitwise intersection + const NodeMask& operator&=(const NodeMask& other) + { + mByte &= other.mByte; + return *this; + } + /// @brief Bitwise union + const NodeMask& operator|=(const NodeMask& other) + { + mByte |= other.mByte; + return *this; + } + /// @brief Bitwise difference + const NodeMask& operator-=(const NodeMask& other) + { + mByte &= static_cast(~other.mByte); + return *this; + } + /// @brief Bitwise XOR + const NodeMask& operator^=(const NodeMask& other) + { + mByte ^= other.mByte; + return *this; + } + NodeMask operator!() const { NodeMask m(*this); m.toggle(); return m; } + NodeMask operator&(const NodeMask& other) const { NodeMask m(*this); m &= other; return m; } + NodeMask operator|(const NodeMask& other) const { NodeMask m(*this); m |= other; return m; } + NodeMask operator^(const NodeMask& other) const { NodeMask m(*this); m ^= other; return m; } + /// Return the byte size of this NodeMask + static Index32 memUsage() { return 1; } + /// Return the total number of on bits + Index32 countOn() const { return CountOn(mByte); } + /// Return the total number of on bits + Index32 countOff() const { return CountOff(mByte); } + /// Set the nth bit on + void setOn(Index32 n) { + assert( n < 8 ); + mByte = static_cast(mByte | 0x01U << (n & 7)); + } + /// Set the nth bit off + void setOff(Index32 n) { + assert( n < 8 ); + mByte = static_cast(mByte & ~(0x01U << (n & 7))); + } + /// Set the nth bit to the specified state + void set(Index32 n, bool On) { On ? this->setOn(n) : this->setOff(n); } + /// Set all bits to the specified state + void set(bool on) { mByte = on ? 0xFFU : 0x00U; } + /// Set all bits on + void setOn() { mByte = 0xFFU; } + /// Set all bits off + void setOff() { mByte = 0x00U; } + /// Toggle the state of the nth bit + void toggle(Index32 n) { + assert( n < 8 ); + mByte = static_cast(mByte ^ 0x01U << (n & 7)); + } + /// Toggle the state of all bits in the mask + void toggle() { mByte = static_cast(~mByte); } + /// Set the first bit on + void setFirstOn() { this->setOn(0); } + /// Set the last bit on + void setLastOn() { this->setOn(7); } + /// Set the first bit off + void setFirstOff() { this->setOff(0); } + /// Set the last bit off + void setLastOff() { this->setOff(7); } + /// Return true if the nth bit is on + bool isOn(Index32 n) const + { + assert( n < 8 ); + return mByte & (0x01U << (n & 7)); + } + /// Return true if the nth bit is off + bool isOff(Index32 n) const {return !this->isOn(n); } + /// Return true if all the bits are on + bool isOn() const { return mByte == 0xFFU; } + /// Return true if all the bits are off + bool isOff() const { return mByte == 0; } + /// Return @c true if bits are either all off OR all on. + /// @param isOn Takes on the values of all bits if the method + /// returns true - else it is undefined. + bool isConstant(bool &isOn) const + { + isOn = this->isOn(); + return isOn || this->isOff(); + } + Index32 findFirstOn() const { return mByte ? FindLowestOn(mByte) : 8; } + Index32 findFirstOff() const + { + const Byte b = static_cast(~mByte); + return b ? FindLowestOn(b) : 8; + } + /* + //@{ + /// Return the nth word of the bit mask, for a word of arbitrary size. + /// @note This version assumes WordT=Byte and n=0! + template + WordT getWord(Index n) const + { + static_assert(sizeof(WordT) == sizeof(Byte), "expected word size to be one byte"); + assert(n == 0); + return reinterpret_cast(mByte); + } + template + WordT& getWord(Index n) + { + static_assert(sizeof(WordT) == sizeof(Byte), "expected word size to be one byte"); + assert(n == 0); + return reinterpret_cast(mByte); + } + //@} + */ + void save(std::ostream& os) const { os.write(reinterpret_cast(&mByte), 1); } + void load(std::istream& is) { is.read(reinterpret_cast(&mByte), 1); } + void seek(std::istream& is) const { is.seekg(1, std::ios_base::cur); } + /// @brief simple print method for debugging + void printInfo(std::ostream& os=std::cout) const + { + os << "NodeMask: Dim=2, Log2Dim=1, Bit count=8, Word count=1"<isOn(i); + os << "||" << std::endl; + } + void printAll(std::ostream& os=std::cout) const + { + this->printInfo(os); + this->printBits(os); + } + + Index32 findNextOn(Index32 start) const + { + if (start>=8) return 8; + const Byte b = static_cast(mByte & (0xFFU << start)); + return b ? FindLowestOn(b) : 8; + } + + Index32 findNextOff(Index32 start) const + { + if (start>=8) return 8; + const Byte b = static_cast(~mByte & (0xFFU << start)); + return b ? FindLowestOn(b) : 8; + } + +};// NodeMask<1> + + +/// @brief Template specialization of NodeMask for Log2Dim=2, i.e. 4^3 nodes +template<> +class NodeMask<2> +{ +public: + + static const Index32 LOG2DIM = 2; + static const Index32 DIM = 4; + static const Index32 SIZE = 64; + static const Index32 WORD_COUNT = 1; + using Word = Index64; + +private: + + Word mWord;//only member data! + +public: + /// Default constructor sets all bits off + NodeMask() : mWord(UINT64_C(0x00)) {} + /// All bits are set to the specified state + NodeMask(bool on) : mWord(on ? UINT64_C(0xFFFFFFFFFFFFFFFF) : UINT64_C(0x00)) {} + /// Copy constructor + NodeMask(const NodeMask &other) : mWord(other.mWord) {} + /// Destructor + ~NodeMask() {} + /// Assignment operator + void operator = (const NodeMask &other) { mWord = other.mWord; } + + using OnIterator = OnMaskIterator; + using OffIterator = OffMaskIterator; + using DenseIterator = DenseMaskIterator; + + OnIterator beginOn() const { return OnIterator(this->findFirstOn(),this); } + OnIterator endOn() const { return OnIterator(SIZE,this); } + OffIterator beginOff() const { return OffIterator(this->findFirstOff(),this); } + OffIterator endOff() const { return OffIterator(SIZE,this); } + DenseIterator beginDense() const { return DenseIterator(0,this); } + DenseIterator endDense() const { return DenseIterator(SIZE,this); } + + bool operator == (const NodeMask &other) const { return mWord == other.mWord; } + + bool operator != (const NodeMask &other) const {return mWord != other.mWord; } + + // + // Bitwise logical operations + // + + /// @brief Apply a functor to the words of the this and the other mask. + /// + /// @details An example that implements the "operator&=" method: + /// @code + /// struct Op { inline void operator()(Word &w1, const Word& w2) const { w1 &= w2; } }; + /// @endcode + template + const NodeMask& foreach(const NodeMask& other, const WordOp& op) + { + op(mWord, other.mWord); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const WordOp& op) + { + op(mWord, other1.mWord, other2.mWord); + return *this; + } + template + const NodeMask& foreach(const NodeMask& other1, const NodeMask& other2, const NodeMask& other3, + const WordOp& op) + { + op(mWord, other1.mWord, other2.mWord, other3.mWord); + return *this; + } + /// @brief Bitwise intersection + const NodeMask& operator&=(const NodeMask& other) + { + mWord &= other.mWord; + return *this; + } + /// @brief Bitwise union + const NodeMask& operator|=(const NodeMask& other) + { + mWord |= other.mWord; + return *this; + } + /// @brief Bitwise difference + const NodeMask& operator-=(const NodeMask& other) + { + mWord &= ~other.mWord; + return *this; + } + /// @brief Bitwise XOR + const NodeMask& operator^=(const NodeMask& other) + { + mWord ^= other.mWord; + return *this; + } + NodeMask operator!() const { NodeMask m(*this); m.toggle(); return m; } + NodeMask operator&(const NodeMask& other) const { NodeMask m(*this); m &= other; return m; } + NodeMask operator|(const NodeMask& other) const { NodeMask m(*this); m |= other; return m; } + NodeMask operator^(const NodeMask& other) const { NodeMask m(*this); m ^= other; return m; } + /// Return the byte size of this NodeMask + static Index32 memUsage() { return 8; } + /// Return the total number of on bits + Index32 countOn() const { return CountOn(mWord); } + /// Return the total number of on bits + Index32 countOff() const { return CountOff(mWord); } + /// Set the nth bit on + void setOn(Index32 n) { + assert( n < 64 ); + mWord |= UINT64_C(0x01) << (n & 63); + } + /// Set the nth bit off + void setOff(Index32 n) { + assert( n < 64 ); + mWord &= ~(UINT64_C(0x01) << (n & 63)); + } + /// Set the nth bit to the specified state + void set(Index32 n, bool On) { On ? this->setOn(n) : this->setOff(n); } + /// Set all bits to the specified state + void set(bool on) { mWord = on ? UINT64_C(0xFFFFFFFFFFFFFFFF) : UINT64_C(0x00); } + /// Set all bits on + void setOn() { mWord = UINT64_C(0xFFFFFFFFFFFFFFFF); } + /// Set all bits off + void setOff() { mWord = UINT64_C(0x00); } + /// Toggle the state of the nth bit + void toggle(Index32 n) { + assert( n < 64 ); + mWord ^= UINT64_C(0x01) << (n & 63); + } + /// Toggle the state of all bits in the mask + void toggle() { mWord = ~mWord; } + /// Set the first bit on + void setFirstOn() { this->setOn(0); } + /// Set the last bit on + void setLastOn() { this->setOn(63); } + /// Set the first bit off + void setFirstOff() { this->setOff(0); } + /// Set the last bit off + void setLastOff() { this->setOff(63); } + /// Return true if the nth bit is on + bool isOn(Index32 n) const + { + assert( n < 64 ); + return 0 != (mWord & (UINT64_C(0x01) << (n & 63))); + } + /// Return true if the nth bit is off + bool isOff(Index32 n) const {return !this->isOn(n); } + /// Return true if all the bits are on + bool isOn() const { return mWord == UINT64_C(0xFFFFFFFFFFFFFFFF); } + /// Return true if all the bits are off + bool isOff() const { return mWord == 0; } + /// Return @c true if bits are either all off OR all on. + /// @param isOn Takes on the values of all bits if the method + /// returns true - else it is undefined. + bool isConstant(bool &isOn) const + { isOn = this->isOn(); + return isOn || this->isOff(); + } + Index32 findFirstOn() const { return mWord ? FindLowestOn(mWord) : 64; } + Index32 findFirstOff() const + { + const Word w = ~mWord; + return w ? FindLowestOn(w) : 64; + } + //@{ + /// Return the nth word of the bit mask, for a word of arbitrary size. + template + WordT getWord(Index n) const + { + assert(n*8*sizeof(WordT) < SIZE); + return reinterpret_cast(&mWord)[n]; + } + template + WordT& getWord(Index n) + { + assert(n*8*sizeof(WordT) < SIZE); + return reinterpret_cast(mWord)[n]; + } + //@} + void save(std::ostream& os) const { os.write(reinterpret_cast(&mWord), 8); } + void load(std::istream& is) { is.read(reinterpret_cast(&mWord), 8); } + void seek(std::istream& is) const { is.seekg(8, std::ios_base::cur); } + /// @brief simple print method for debugging + void printInfo(std::ostream& os=std::cout) const + { + os << "NodeMask: Dim=4, Log2Dim=2, Bit count=64, Word count=1"<isOn(i); + } + os << "||" << std::endl; + } + void printAll(std::ostream& os=std::cout) const + { + this->printInfo(os); + this->printBits(os); + } + + Index32 findNextOn(Index32 start) const + { + if (start>=64) return 64; + const Word w = mWord & (UINT64_C(0xFFFFFFFFFFFFFFFF) << start); + return w ? FindLowestOn(w) : 64; + } + + Index32 findNextOff(Index32 start) const + { + if (start>=64) return 64; + const Word w = ~mWord & (UINT64_C(0xFFFFFFFFFFFFFFFF) << start); + return w ? FindLowestOn(w) : 64; + } + +};// NodeMask<2> + + +// Unlike NodeMask above this RootNodeMask has a run-time defined size. +// It is only included for backward compatibility and will likely be +// deprecated in the future! +// This class is 32-bit specefic, hence the use if Index32 vs Index! +class RootNodeMask +{ +protected: + Index32 mBitSize, mIntSize; + Index32 *mBits; + +public: + RootNodeMask(): mBitSize(0), mIntSize(0), mBits(nullptr) {} + RootNodeMask(Index32 bit_size): + mBitSize(bit_size), mIntSize(((bit_size-1)>>5)+1), mBits(new Index32[mIntSize]) + { + for (Index32 i=0; i>5)+1; + delete [] mBits; + mBits = new Index32[mIntSize]; + for (Index32 i=0; igetBitSize()), mParent(parent) { assert(pos <= mBitSize); } + bool operator==(const BaseIterator &iter) const {return mPos == iter.mPos;} + bool operator!=(const BaseIterator &iter) const {return mPos != iter.mPos;} + bool operator< (const BaseIterator &iter) const {return mPos < iter.mPos;} + BaseIterator& operator=(const BaseIterator& iter) { + mPos = iter.mPos; + mBitSize = iter.mBitSize; + mParent = iter.mParent; + return *this; + } + + Index32 offset() const {return mPos;} + + Index32 pos() const {return mPos;} + + bool test() const { + assert(mPos <= mBitSize); + return (mPos != mBitSize); + } + + operator bool() const {return this->test();} + }; // class BaseIterator + + /// @note This happens to be a const-iterator! + class OnIterator: public BaseIterator + { + protected: + using BaseIterator::mPos;//bit position; + using BaseIterator::mBitSize;//bit size; + using BaseIterator::mParent;//this iterator can't change the parent_mask! + public: + OnIterator() : BaseIterator() {} + OnIterator(Index32 pos,const RootNodeMask *parent) : BaseIterator(pos,parent) {} + void increment() { + assert(mParent != nullptr); + mPos=mParent->findNextOn(mPos+1); + assert(mPos <= mBitSize); + } + void increment(Index n) { + for (Index i=0; inext(); ++i) {} + } + bool next() { + this->increment(); + return this->test(); + } + bool operator*() const {return true;} + OnIterator& operator++() { + this->increment(); + return *this; + } + }; // class OnIterator + + class OffIterator: public BaseIterator + { + protected: + using BaseIterator::mPos;//bit position; + using BaseIterator::mBitSize;//bit size; + using BaseIterator::mParent;//this iterator can't change the parent_mask! + public: + OffIterator() : BaseIterator() {} + OffIterator(Index32 pos,const RootNodeMask *parent) : BaseIterator(pos,parent) {} + void increment() { + assert(mParent != nullptr); + mPos=mParent->findNextOff(mPos+1); + assert(mPos <= mBitSize); + } + void increment(Index n) { + for (Index i=0; inext(); ++i) {} + } + bool next() { + this->increment(); + return this->test(); + } + bool operator*() const {return true;} + OffIterator& operator++() { + this->increment(); + return *this; + } + }; // class OffIterator + + class DenseIterator: public BaseIterator + { + protected: + using BaseIterator::mPos;//bit position; + using BaseIterator::mBitSize;//bit size; + using BaseIterator::mParent;//this iterator can't change the parent_mask! + public: + DenseIterator() : BaseIterator() {} + DenseIterator(Index32 pos,const RootNodeMask *parent) : BaseIterator(pos,parent) {} + void increment() { + assert(mParent != nullptr); + mPos += 1;//carefull - the increament might go beyond the end + assert(mPos<= mBitSize); + } + void increment(Index n) { + for (Index i=0; inext(); ++i) {} + } + bool next() { + this->increment(); + return this->test(); + } + bool operator*() const {return mParent->isOn(mPos);} + DenseIterator& operator++() { + this->increment(); + return *this; + } + }; // class DenseIterator + + OnIterator beginOn() const { return OnIterator(this->findFirstOn(),this); } + OnIterator endOn() const { return OnIterator(mBitSize,this); } + OffIterator beginOff() const { return OffIterator(this->findFirstOff(),this); } + OffIterator endOff() const { return OffIterator(mBitSize,this); } + DenseIterator beginDense() const { return DenseIterator(0,this); } + DenseIterator endDense() const { return DenseIterator(mBitSize,this); } + + bool operator == (const RootNodeMask &B) const { + if (mBitSize != B.mBitSize) return false; + for (Index32 i=0; i(mIntSize*sizeof(Index32) + sizeof(*this)); + } + + Index32 countOn() const { + assert(mBits); + Index32 n=0; + for (Index32 i=0; i< mIntSize; ++i) n += CountOn(mBits[i]); + return n; + } + + Index32 countOff() const { return mBitSize-this->countOn(); } + + void setOn(Index32 i) { + assert(mBits); + assert( (i>>5) < mIntSize); + mBits[i>>5] |= 1<<(i&31); + } + + void setOff(Index32 i) { + assert(mBits); + assert( (i>>5) < mIntSize); + mBits[i>>5] &= ~(1<<(i&31)); + } + + void set(Index32 i, bool On) { On ? this->setOn(i) : this->setOff(i); } + + void setOn() { + assert(mBits); + for (Index32 i=0; i>5) < mIntSize); + mBits[i>>5] ^= 1<<(i&31); + } + void toggle() { + assert(mBits); + for (Index32 i=0; isetOn(0); } + void setLastOn() { this->setOn(mBitSize-1); } + void setFirstOff() { this->setOff(0); } + void setLastOff() { this->setOff(mBitSize-1); } + bool isOn(Index32 i) const { + assert(mBits); + assert( (i>>5) < mIntSize); + return ( mBits[i >> 5] & (1<<(i&31)) ); + } + bool isOff(Index32 i) const { + assert(mBits); + assert( (i>>5) < mIntSize); + return ( ~mBits[i >> 5] & (1<<(i&31)) ); + } + + bool isOn() const { + if (!mBits) return false;//undefined is off + for (Index32 i=0; i(mBits), mIntSize * sizeof(Index32)); + } + void load(std::istream& is) { + assert(mBits); + is.read(reinterpret_cast(mBits), mIntSize * sizeof(Index32)); + } + void seek(std::istream& is) const { + assert(mBits); + is.seekg(mIntSize * sizeof(Index32), std::ios_base::cur); + } + /// @brief simple print method for debugging + void printInfo(std::ostream& os=std::cout) const { + os << "RootNodeMask: Bit-size="<isOn(i); + } + os << "|" << std::endl; + } + + void printAll(std::ostream& os=std::cout, Index32 max_out=80u) const { + this->printInfo(os); + this->printBits(os,max_out); + } + + Index32 findNextOn(Index32 start) const { + assert(mBits); + Index32 n = start >> 5, m = start & 31;//initiate + if (n>=mIntSize) return mBitSize; // check for out of bounds + Index32 b = mBits[n]; + if (b & (1<> 5, m = start & 31;//initiate + if (n>=mIntSize) return mBitSize; // check for out of bounds + Index32 b = ~mBits[n]; + if (b & (1<(sizeof(Index32*)+(2+mIntSize)*sizeof(Index32));//in bytes + } +}; // class RootNodeMask + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_NODEMASKS_HAS_BEEN_INCLUDED diff --git a/openvdb/util/NullInterrupter.h b/openvdb/util/NullInterrupter.h new file mode 100644 index 00000000..6f2da9f4 --- /dev/null +++ b/openvdb/util/NullInterrupter.h @@ -0,0 +1,59 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file NullInterrupter.h + +#ifndef OPENVDB_UTIL_NULL_INTERRUPTER_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_NULL_INTERRUPTER_HAS_BEEN_INCLUDED + +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +/// @brief Dummy NOOP interrupter class defining interface +/// +/// This shows the required interface for the @c InterrupterType template argument +/// using by several threaded applications (e.g. tools/PointAdvect.h). The host +/// application calls start() at the beginning of an interruptible operation, end() +/// at the end of the operation, and wasInterrupted() periodically during the operation. +/// If any call to wasInterrupted() returns @c true, the operation will be aborted. +/// @note This Dummy interrupter will NEVER interrupt since wasInterrupted() always +/// returns false! +struct NullInterrupter +{ + /// Default constructor + NullInterrupter () {} + /// Signal the start of an interruptible operation. + /// @param name an optional descriptive name for the operation + void start(const char* name = nullptr) { (void)name; } + /// Signal the end of an interruptible operation. + void end() {} + /// Check if an interruptible operation should be aborted. + /// @param percent an optional (when >= 0) percentage indicating + /// the fraction of the operation that has been completed + /// @note this method is assumed to be thread-safe. The current + /// implementation is clearly a NOOP and should compile out during + /// optimization! + inline bool wasInterrupted(int percent = -1) { (void)percent; return false; } +}; + +/// This method allows NullInterrupter::wasInterrupted to be compiled +/// out when client code only has a pointer (vs reference) to the interrupter. +/// +/// @note This is a free-standing function since C++ doesn't allow for +/// partial template specialization (in client code of the interrupter). +template +inline bool wasInterrupted(T* i, int percent = -1) { return i && i->wasInterrupted(percent); } + +/// Specialization for NullInterrupter +template<> +inline bool wasInterrupted(util::NullInterrupter*, int) { return false; } + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_NULL_INTERRUPTER_HAS_BEEN_INCLUDED diff --git a/openvdb/util/PagedArray.h b/openvdb/util/PagedArray.h new file mode 100644 index 00000000..9a8cf82a --- /dev/null +++ b/openvdb/util/PagedArray.h @@ -0,0 +1,749 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +/// +/// @file PagedArray.h +/// +/// @author Ken Museth +/// +/// @brief Concurrent, page-based, dynamically-sized linear data +/// structure with O(1) random access and STL-compliant +/// iterators. It is primarily intended for applications +/// that involve multi-threading push_back of (a possibly +/// unkown number of) elements into a dynamically growing +/// linear array, and fast random access to said elements. + +#ifndef OPENVDB_UTIL_PAGED_ARRAY_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_PAGED_ARRAY_HAS_BEEN_INCLUDED + +#include +#include // SharedPtr +#include +#include +#include +#include // std::swap +#include +#include +#include +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +//////////////////////////////////////// + + +/// @brief Concurrent, page-based, dynamically-sized linear data structure +/// with O(1) random access and STL-compliant iterators. It is +/// primarily intended for applications that concurrently insert +/// (a possibly unkown number of) elements into a dynamically +/// growing linear array, and fast random access to said elements. +/// +/// @note Multiple threads can grow the page-table and push_back +/// new elements concurrently. A ValueBuffer provides accelerated +/// and threadsafe push_back at the cost of potentially re-ordering +/// elements (when multiple instances are used). +/// +/// @details This data structure employes contiguous pages of elements +/// (a std::deque) which avoids moving data when the +/// capacity is out-grown and new pages are allocated. The +/// size of the pages can be controlled with the Log2PageSize +/// template parameter (defaults to 1024 elements of type ValueT). +/// +/// There are three fundamentally different ways to insert elements to +/// this container - each with different advanteges and disadvanteges. +/// +/// The simplest way to insert elements is to use PagedArray::push_back e.g. +/// @code +/// PagedArray array; +/// for (size_t i=0; i<100000; ++i) array.push_back(i); +/// @endcode +/// or with TBB task-based multi-threading +/// @code +/// PagedArray array; +/// tbb::parallel_for( +/// tbb::blocked_range(0, 10000, array.pageSize()), +/// [&array](const tbb::blocked_range& range) { +/// for (size_t i=range.begin(); i!=range.end(); ++i) array.push_back(i); +/// } +/// ); +/// @endcode +/// PagedArray::push_back has the advantage that it's thread-safe and +/// preserves the ordering of the inserted elements. In fact it returns +/// the linear offset to the added element which can then be used for +/// fast O(1) random access. The disadvantage is it's the slowest of +/// the three different ways of inserting elements. +/// +/// The fastest way (by far) to insert elements by means of a PagedArray::ValueBuffer, e.g. +/// @code +/// PagedArray array; +/// PagedArray::ValueBuffer buffer(array); +/// for (size_t i=0; i<100000; ++i) buffer.push_back(i); +/// buffer.flush(); +/// @endcode +/// or +/// @code +/// PagedArray array; +/// { +/// //local scope of a single thread +/// PagedArray::ValueBuffer buffer(array); +/// for (size_t i=0; i<100000; ++i) buffer.push_back(i); +/// } +/// @endcode +/// or with TBB task-based multi-threading +/// @code +/// PagedArray array; +/// tbb::parallel_for( +/// tbb::blocked_range(0, 10000, array.pageSize()), +/// [&array](const tbb::blocked_range& range) { +/// PagedArray::ValueBuffer buffer(array); +/// for (size_t i=range.begin(); i!=range.end(); ++i) buffer.push_back(i); +/// } +/// ); +/// @endcode +/// or with TBB thread-local storage for even better performance (due +/// to fewer concurrent instantiations of partially full ValueBuffers) +/// @code +/// PagedArray array; +/// PagedArray::ValueBuffer exemplar(array);//dummy used for initialization +/// tbb::enumerable_thread_specific::ValueBuffer> +/// pool(exemplar);//thread local storage pool of ValueBuffers +/// tbb::parallel_for( +/// tbb::blocked_range(0, 10000, array.pageSize()), +/// [&pool](const tbb::blocked_range& range) { +/// PagedArray::ValueBuffer &buffer = pool.local(); +/// for (size_t i=range.begin(); i!=range.end(); ++i) buffer.push_back(i); +/// } +/// ); +/// for (auto i=pool.begin(); i!=pool.end(); ++i) i->flush(); +/// @endcode +/// This technique generally outperforms PagedArray::push_back, +/// std::vector::push_back, std::deque::push_back and even +/// tbb::concurrent_vector::push_back. Additionally it +/// is thread-safe as long as each thread has it's own instance of a +/// PagedArray::ValueBuffer. The only disadvantage is the ordering of +/// the elements is undefined if multiple instance of a +/// PagedArray::ValueBuffer are employed. This is typically the case +/// in the context of multi-threading, where the +/// ordering of inserts are undefined anyway. Note that a local scope +/// can be used to guarentee that the ValueBuffer has inserted all its +/// elements by the time the scope ends. Alternatively the ValueBuffer +/// can be explicitly flushed by calling ValueBuffer::flush. +/// +/// The third way to insert elements is to resize the container and use +/// random access, e.g. +/// @code +/// PagedArray array; +/// array.resize(100000); +/// for (int i=0; i<100000; ++i) array[i] = i; +/// @endcode +/// or in terms of the random access iterator +/// @code +/// PagedArray array; +/// array.resize(100000); +/// for (auto i=array.begin(); i!=array.end(); ++i) *i = i.pos(); +/// @endcode +/// While this approach is both fast and thread-safe it suffers from the +/// major disadvantage that the problem size, i.e. number of elements, needs to +/// be known in advance. If that's the case you might as well consider +/// using std::vector or a raw c-style array! In other words the +/// PagedArray is most useful in the context of applications that +/// involve multi-threading of dynamically growing linear arrays that +/// require fast random access. + +template +class PagedArray +{ +private: + class Page; + + // must allow mutiple threads to call operator[] as long as only one thread calls push_back + using PageTableT = std::deque; + +public: + using ValueType = ValueT; + using Ptr = SharedPtr; + + /// @brief Default constructor + PagedArray() : mCapacity{0} { mSize = 0; } + + /// @brief Destructor removed all allocated pages + ~PagedArray() { this->clear(); } + + // Disallow copy construction and assignment + PagedArray(const PagedArray&) = delete; + PagedArray& operator=(const PagedArray&) = delete; + + /// @brief Return a shared pointer to a new instance of this class + static Ptr create() { return Ptr(new PagedArray); } + + /// @brief Caches values into a local memory Page to improve + /// performance of push_back into a PagedArray. + /// + /// @note The ordering of inserted elements is undefined when + /// multiple ValueBuffers are used! + /// + /// @warning By design this ValueBuffer is not threadsafe so + /// make sure to create an instance per thread! + class ValueBuffer; + + /// Const std-compliant iterator + class ConstIterator; + + /// Non-const std-compliant iterator + class Iterator; + + /// @brief Thread safe insertion, adds a new element at + /// the end and increases the container size by one and + /// returns the linear offset for the inserted element. + /// + /// @param value value to be added to this PagedArray + /// + /// @details Constant time complexity. May allocate a new page. + size_t push_back(const ValueType& value) + { + const size_t index = mSize.fetch_and_increment(); + if (index >= mCapacity) this->grow(index); + (*mPageTable[index >> Log2PageSize])[index] = value; + return index; + } + + /// @brief Slightly faster than the thread-safe push_back above. + /// + /// @param value value to be added to this PagedArray + /// + /// @note For best performance consider using the ValueBuffer! + /// + /// @warning Not thread-safe! + size_t push_back_unsafe(const ValueType& value) + { + const size_t index = mSize.fetch_and_increment(); + if (index >= mCapacity) { + mPageTable.push_back( new Page() ); + mCapacity += Page::Size; + } + (*mPageTable[index >> Log2PageSize])[index] = value; + return index; + } + + /// @brief Reduce the page table to fix the current size. + /// + /// @warning Not thread-safe! + void shrink_to_fit(); + + /// @brief Return a reference to the value at the specified offset + /// + /// @param i linear offset of the value to be accessed. + /// + /// @note This random access has constant time complexity. + /// + /// @warning It is assumed that the i'th element is already allocated! + ValueType& operator[](size_t i) + { + assert(i>Log2PageSize])[i]; + } + + /// @brief Return a const-reference to the value at the specified offset + /// + /// @param i linear offset of the value to be accessed. + /// + /// @note This random access has constant time complexity. + /// + /// @warning It is assumed that the i'th element is already allocated! + const ValueType& operator[](size_t i) const + { + assert(i>Log2PageSize])[i]; + } + + /// @brief Set all elements in the page table to the specified value + /// + /// @param v value to be filled in all the existing pages of this PagedArray. + /// + /// @note Multi-threaded + void fill(const ValueType& v) + { + auto op = [&](const tbb::blocked_range& r){ + for(size_t i=r.begin(); i!=r.end(); ++i) mPageTable[i]->fill(v); + }; + tbb::parallel_for(tbb::blocked_range(0, this->pageCount()), op); + } + + /// @brief Copy the first @a count values in this PageArray into + /// a raw c-style array, assuming it to be at least @a count + /// elements long. + /// + /// @param p pointer to an array that will used as the destination of the copy. + /// @param count number of elements to be copied. + /// + bool copy(ValueType *p, size_t count) const + { + size_t last_page = count >> Log2PageSize; + if (last_page >= this->pageCount()) return false; + auto op = [&](const tbb::blocked_range& r){ + for (size_t i=r.begin(); i!=r.end(); ++i) { + mPageTable[i]->copy(p+i*Page::Size, Page::Size); + } + }; + if (size_t m = count & Page::Mask) {//count is not divisible by page size + tbb::parallel_for(tbb::blocked_range(0, last_page, 32), op); + mPageTable[last_page]->copy(p+last_page*Page::Size, m); + } else { + tbb::parallel_for(tbb::blocked_range(0, last_page+1, 32), op); + } + return true; + } + void copy(ValueType *p) const { this->copy(p, mSize); } + + /// @brief Resize this array to the specified size. + /// + /// @param size number of elements that this PageArray will contain. + /// + /// @details Will grow or shrink the page table to contain + /// the specified number of elements. It will affect the size(), + /// iteration will go over all those elements, push_back will + /// insert after them and operator[] can be used directly access + /// them. + /// + /// @note No reserve method is implemented due to efficiency concerns + /// (especially for the ValueBuffer) from having to deal with empty pages. + /// + /// @warning Not thread-safe! + void resize(size_t size) + { + mSize = size; + if (size > mCapacity) { + this->grow(size-1); + } else { + this->shrink_to_fit(); + } + } + + /// @brief Resize this array to the specified size and initialize + /// all values to @a v. + /// + /// @param size number of elements that this PageArray will contain. + /// @param v value of all the @a size values. + /// + /// @details Will grow or shrink the page table to contain + /// the specified number of elements. It will affect the size(), + /// iteration will go over all those elements, push_back will + /// insert after them and operator[] can be used directly access them. + /// + /// @note No reserve method is implemented due to efficiency concerns + /// (especially for the ValueBuffer) from having to deal with empty pages. + /// + /// @warning Not thread-safe! + void resize(size_t size, const ValueType& v) + { + this->resize(size); + this->fill(v); + } + + /// @brief Return the number of elements in this array. + size_t size() const { return mSize; } + + /// @brief Return the maximum number of elements that this array + /// can contain without allocating more memory pages. + size_t capacity() const { return mCapacity; } + + /// @brief Return the number of additional elements that can be + /// added to this array without allocating more memory pages. + size_t freeCount() const { return mCapacity - mSize; } + + /// @brief Return the number of allocated memory pages. + size_t pageCount() const { return mPageTable.size(); } + + /// @brief Return the number of elements per memory page. + static size_t pageSize() { return Page::Size; } + + /// @brief Return log2 of the number of elements per memory page. + static size_t log2PageSize() { return Log2PageSize; } + + /// @brief Return the memory footprint of this array in bytes. + size_t memUsage() const + { + return sizeof(*this) + mPageTable.size() * Page::memUsage(); + } + + /// @brief Return true if the container contains no elements. + bool isEmpty() const { return mSize == 0; } + + /// @brief Return true if the page table is partially full, i.e. the + /// last non-empty page contains less than pageSize() elements. + /// + /// @details When the page table is partially full calling merge() + /// or using a ValueBuffer will rearrange the ordering of + /// existing elements. + bool isPartiallyFull() const { return (mSize & Page::Mask) > 0; } + + /// @brief Removes all elements from the array and delete all pages. + /// + /// @warning Not thread-safe! + void clear() + { + for (size_t i=0, n=mPageTable.size(); ibegin(), this->end(), std::less() ); } + + /// @brief Parallel sort of all the elements in descending order. + void invSort() { tbb::parallel_sort(this->begin(), this->end(), std::greater()); } + + //@{ + /// @brief Parallel sort of all the elements based on a custom + /// functor with the api: + /// @code bool operator()(const ValueT& a, const ValueT& b) @endcode + /// which returns true if a comes before b. + template + void sort(Functor func) { tbb::parallel_sort(this->begin(), this->end(), func ); } + //@} + + /// @brief Transfer all the elements (and pages) from the other array to this array. + /// + /// @param other non-const reference to the PagedArray that will be merged into this PagedArray. + /// + /// @note The other PagedArray is empty on return. + /// + /// @warning The ordering of elements is undefined if this page table is partially full! + void merge(PagedArray& other); + + /// @brief Print information for debugging + void print(std::ostream& os = std::cout) const + { + os << "PagedArray:\n" + << "\tSize: " << this->size() << " elements\n" + << "\tPage table: " << this->pageCount() << " pages\n" + << "\tPage size: " << this->pageSize() << " elements\n" + << "\tCapacity: " << this->capacity() << " elements\n" + << "\tFootprint: " << this->memUsage() << " bytes\n"; + } + +private: + + friend class ValueBuffer; + + void grow(size_t index) + { + tbb::spin_mutex::scoped_lock lock(mGrowthMutex); + while(index >= mCapacity) { + mPageTable.push_back( new Page() ); + mCapacity += Page::Size; + } + } + + void add_full(Page*& page, size_t size); + + void add_partially_full(Page*& page, size_t size); + + void add(Page*& page, size_t size) { + tbb::spin_mutex::scoped_lock lock(mGrowthMutex); + if (size == Page::Size) {//page is full + this->add_full(page, size); + } else if (size>0) {//page is only partially full + this->add_partially_full(page, size); + } + } + PageTableT mPageTable;//holds points to allocated pages + tbb::atomic mSize;// current number of elements in array + size_t mCapacity;//capacity of array given the current page count + tbb::spin_mutex mGrowthMutex;//Mutex-lock required to grow pages +}; // Public class PagedArray + +//////////////////////////////////////////////////////////////////////////////// + +template +void PagedArray::shrink_to_fit() +{ + if (mPageTable.size() > (mSize >> Log2PageSize) + 1) { + tbb::spin_mutex::scoped_lock lock(mGrowthMutex); + const size_t pageCount = (mSize >> Log2PageSize) + 1; + if (mPageTable.size() > pageCount) { + delete mPageTable.back(); + mPageTable.pop_back(); + mCapacity -= Page::Size; + } + } +} + +template +void PagedArray::merge(PagedArray& other) +{ + if (&other != this && !other.isEmpty()) { + tbb::spin_mutex::scoped_lock lock(mGrowthMutex); + // extract last partially full page if it exists + Page* page = nullptr; + const size_t size = mSize & Page::Mask; //number of elements in the last page + if ( size > 0 ) { + page = mPageTable.back(); + mPageTable.pop_back(); + mSize -= size; + } + // transfer all pages from the other page table + mPageTable.insert(mPageTable.end(), other.mPageTable.begin(), other.mPageTable.end()); + mSize += other.mSize; + mCapacity = Page::Size*mPageTable.size(); + other.mSize = 0; + other.mCapacity = 0; + PageTableT().swap(other.mPageTable); + // add back last partially full page + if (page) this->add_partially_full(page, size); + } +} + +template +void PagedArray::add_full(Page*& page, size_t size) +{ + assert(size == Page::Size);//page must be full + if (mSize & Page::Mask) {//page-table is partially full + Page*& tmp = mPageTable.back(); + std::swap(tmp, page);//swap last table entry with page + } + mPageTable.push_back(page); + mCapacity += Page::Size; + mSize += size; + page = nullptr; +} + +template +void PagedArray::add_partially_full(Page*& page, size_t size) +{ + assert(size > 0 && size < Page::Size);//page must be partially full + if (size_t m = mSize & Page::Mask) {//page table is also partially full + ValueT *s = page->data(), *t = mPageTable.back()->data() + m; + for (size_t i=std::min(mSize+size, mCapacity)-mSize; i; --i) *t++ = *s++; + if (mSize+size > mCapacity) {//grow page table + mPageTable.push_back( new Page() ); + t = mPageTable.back()->data(); + for (size_t i=mSize+size-mCapacity; i; --i) *t++ = *s++; + mCapacity += Page::Size; + } + } else {//page table is full so simply append page + mPageTable.push_back( page ); + mCapacity += Page::Size; + page = nullptr; + } + mSize += size; +} + +//////////////////////////////////////////////////////////////////////////////// + +// Public member-class of PagedArray +template +class PagedArray:: +ValueBuffer +{ +public: + using PagedArrayType = PagedArray; + /// @brief Constructor from a PageArray + ValueBuffer(PagedArray& parent) : mParent(&parent), mPage(new Page()), mSize(0) {} + /// @warning This copy-constructor is shallow in the sense that no + /// elements are copied, i.e. size = 0. + ValueBuffer(const ValueBuffer& other) : mParent(other.mParent), mPage(new Page()), mSize(0) {} + /// @brief Destructor that transfers an buffered values to the parent PagedArray. + ~ValueBuffer() { mParent->add(mPage, mSize); delete mPage; } + + ValueBuffer& operator=(const ValueBuffer&) = delete;// disallow copy assignment + + /// @brief Add a value to the buffer and increment the size. + /// + /// @details If the internal memory page is full it will + /// automaically flush the page to the parent PagedArray. + void push_back(const ValueT& v) { + (*mPage)[mSize++] = v; + if (mSize == Page::Size) this->flush(); + } + /// @brief Manually transfers the values in this buffer to the parent PagedArray. + /// + /// @note This method is also called by the destructor and + /// push_back so it should only be called if one manually wants to + /// sync up the buffer with the array, e.g. during debugging. + void flush() { + mParent->add(mPage, mSize); + if (mPage == nullptr) mPage = new Page(); + mSize = 0; + } + /// @brief Return a reference to the parent PagedArray + PagedArrayType& parent() const { return *mParent; } + /// @brief Return the current number of elements cached in this buffer. + size_t size() const { return mSize; } +private: + PagedArray* mParent; + Page* mPage; + size_t mSize; +};// Public class PagedArray::ValueBuffer + +//////////////////////////////////////////////////////////////////////////////// + +// Const std-compliant iterator +// Public member-class of PagedArray +template +class PagedArray:: +ConstIterator : public std::iterator +{ +public: + using BaseT = std::iterator; + using difference_type = typename BaseT::difference_type; + // constructors and assignment + ConstIterator() : mPos(0), mParent(nullptr) {} + ConstIterator(const PagedArray& parent, size_t pos=0) : mPos(pos), mParent(&parent) {} + ConstIterator(const ConstIterator& other) : mPos(other.mPos), mParent(other.mParent) {} + ConstIterator& operator=(const ConstIterator& other) { + mPos=other.mPos; + mParent=other.mParent; + return *this; + } + // prefix + ConstIterator& operator++() { ++mPos; return *this; } + ConstIterator& operator--() { --mPos; return *this; } + // postfix + ConstIterator operator++(int) { ConstIterator tmp(*this); ++mPos; return tmp; } + ConstIterator operator--(int) { ConstIterator tmp(*this); --mPos; return tmp; } + // value access + const ValueT& operator*() const { return (*mParent)[mPos]; } + const ValueT* operator->() const { return &(this->operator*()); } + const ValueT& operator[](const difference_type& pos) const { return (*mParent)[mPos+pos]; } + // offset + ConstIterator& operator+=(const difference_type& pos) { mPos += pos; return *this; } + ConstIterator& operator-=(const difference_type& pos) { mPos -= pos; return *this; } + ConstIterator operator+(const difference_type &pos) const { return Iterator(*mParent,mPos+pos); } + ConstIterator operator-(const difference_type &pos) const { return Iterator(*mParent,mPos-pos); } + difference_type operator-(const ConstIterator& other) const { return mPos - other.pos(); } + // comparisons + bool operator==(const ConstIterator& other) const { return mPos == other.mPos; } + bool operator!=(const ConstIterator& other) const { return mPos != other.mPos; } + bool operator>=(const ConstIterator& other) const { return mPos >= other.mPos; } + bool operator<=(const ConstIterator& other) const { return mPos <= other.mPos; } + bool operator< (const ConstIterator& other) const { return mPos < other.mPos; } + bool operator> (const ConstIterator& other) const { return mPos > other.mPos; } + // non-std methods + bool isValid() const { return mParent != nullptr && mPos < mParent->size(); } + size_t pos() const { return mPos; } +private: + size_t mPos; + const PagedArray* mParent; +};// Public class PagedArray::ConstIterator + +//////////////////////////////////////////////////////////////////////////////// + +// Non-const std-compliant iterator +// Public member-class of PagedArray +template +class PagedArray:: +Iterator : public std::iterator +{ +public: + using BaseT = std::iterator; + using difference_type = typename BaseT::difference_type; + // constructors and assignment + Iterator() : mPos(0), mParent(nullptr) {} + Iterator(PagedArray& parent, size_t pos=0) : mPos(pos), mParent(&parent) {} + Iterator(const Iterator& other) : mPos(other.mPos), mParent(other.mParent) {} + Iterator& operator=(const Iterator& other) { + mPos=other.mPos; + mParent=other.mParent; + return *this; + } + // prefix + Iterator& operator++() { ++mPos; return *this; } + Iterator& operator--() { --mPos; return *this; } + // postfix + Iterator operator++(int) { Iterator tmp(*this); ++mPos; return tmp; } + Iterator operator--(int) { Iterator tmp(*this); --mPos; return tmp; } + // value access + ValueT& operator*() const { return (*mParent)[mPos]; } + ValueT* operator->() const { return &(this->operator*()); } + ValueT& operator[](const difference_type& pos) const { return (*mParent)[mPos+pos]; } + // offset + Iterator& operator+=(const difference_type& pos) { mPos += pos; return *this; } + Iterator& operator-=(const difference_type& pos) { mPos -= pos; return *this; } + Iterator operator+(const difference_type &pos) const { return Iterator(*mParent, mPos+pos); } + Iterator operator-(const difference_type &pos) const { return Iterator(*mParent, mPos-pos); } + difference_type operator-(const Iterator& other) const { return mPos - other.pos(); } + // comparisons + bool operator==(const Iterator& other) const { return mPos == other.mPos; } + bool operator!=(const Iterator& other) const { return mPos != other.mPos; } + bool operator>=(const Iterator& other) const { return mPos >= other.mPos; } + bool operator<=(const Iterator& other) const { return mPos <= other.mPos; } + bool operator< (const Iterator& other) const { return mPos < other.mPos; } + bool operator> (const Iterator& other) const { return mPos > other.mPos; } + // non-std methods + bool isValid() const { return mParent != nullptr && mPos < mParent->size(); } + size_t pos() const { return mPos; } + private: + size_t mPos; + PagedArray* mParent; +};// Public class PagedArray::Iterator + +//////////////////////////////////////////////////////////////////////////////// + +// Private member-class of PagedArray implementing a memory page +template +class PagedArray:: +Page +{ +public: + static const size_t Size = 1UL << Log2PageSize; + static const size_t Mask = Size - 1UL; + static size_t memUsage() { return sizeof(ValueT)*Size; } + // Raw memory allocation without any initialization + Page() : mData(reinterpret_cast(new char[sizeof(ValueT)*Size])) {} + ~Page() { delete [] mData; } + Page(const Page&) = delete;//copy construction is not implemented + Page& operator=(const Page&) = delete;//copy assignment is not implemented + ValueT& operator[](const size_t i) { return mData[i & Mask]; } + const ValueT& operator[](const size_t i) const { return mData[i & Mask]; } + void fill(const ValueT& v) { + ValueT* dst = mData; + for (size_t i=Size; i; --i) *dst++ = v; + } + ValueT* data() { return mData; } + // Copy the first n elements of this Page to dst (which is assumed to large + // enough to hold the n elements). + void copy(ValueType *dst, size_t n) const { + const ValueT* src = mData; + for (size_t i=n; i; --i) *dst++ = *src++; + } +protected: + ValueT* mData; +};// Private class PagedArray::Page + +//////////////////////////////////////////////////////////////////////////////// + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_PAGED_ARRAY_HAS_BEEN_INCLUDED diff --git a/openvdb/util/Util.cc b/openvdb/util/Util.cc new file mode 100644 index 00000000..ec56bf80 --- /dev/null +++ b/openvdb/util/Util.cc @@ -0,0 +1,46 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Util.h" +#include + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +const Index32 INVALID_IDX = std::numeric_limits::max(); + +const Coord COORD_OFFSETS[26] = +{ + Coord( 1, 0, 0), /// Voxel-face adjacent neghbours + Coord(-1, 0, 0), /// 0 to 5 + Coord( 0, 1, 0), + Coord( 0, -1, 0), + Coord( 0, 0, 1), + Coord( 0, 0, -1), + Coord( 1, 0, -1), /// Voxel-edge adjacent neghbours + Coord(-1, 0, -1), /// 6 to 17 + Coord( 1, 0, 1), + Coord(-1, 0, 1), + Coord( 1, 1, 0), + Coord(-1, 1, 0), + Coord( 1, -1, 0), + Coord(-1, -1, 0), + Coord( 0, -1, 1), + Coord( 0, -1, -1), + Coord( 0, 1, 1), + Coord( 0, 1, -1), + Coord(-1, -1, -1), /// Voxel-corner adjacent neghbours + Coord(-1, -1, 1), /// 18 to 25 + Coord( 1, -1, 1), + Coord( 1, -1, -1), + Coord(-1, 1, -1), + Coord(-1, 1, 1), + Coord( 1, 1, 1), + Coord( 1, 1, -1) +}; + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb diff --git a/openvdb/util/Util.h b/openvdb/util/Util.h new file mode 100644 index 00000000..b7eaee3b --- /dev/null +++ b/openvdb/util/Util.h @@ -0,0 +1,135 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_UTIL_UTIL_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_UTIL_HAS_BEEN_INCLUDED + +#include +#include +#include +#include // for tree::pruneInactive + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace util { + +OPENVDB_API extern const Index32 INVALID_IDX; + +/// @brief coordinate offset table for neighboring voxels +OPENVDB_API extern const Coord COORD_OFFSETS[26]; + + +//////////////////////////////////////// + + +/// Return @a voxelCoord rounded to the closest integer coordinates. +inline Coord +nearestCoord(const Vec3d& voxelCoord) +{ + Coord ijk; + ijk[0] = int(std::floor(voxelCoord[0])); + ijk[1] = int(std::floor(voxelCoord[1])); + ijk[2] = int(std::floor(voxelCoord[2])); + return ijk; +} + + +//////////////////////////////////////// + + +/// @brief Functor for use with tools::foreach() to compute the boolean intersection +/// between the value masks of corresponding leaf nodes in two trees +template +class LeafTopologyIntOp +{ +public: + LeafTopologyIntOp(const TreeType2& tree): mOtherTree(&tree) {} + + inline void operator()(const typename TreeType1::LeafIter& lIter) const + { + const Coord xyz = lIter->origin(); + const typename TreeType2::LeafNodeType* leaf = mOtherTree->probeConstLeaf(xyz); + if (leaf) {//leaf node + lIter->topologyIntersection(*leaf, zeroVal()); + } else if (!mOtherTree->isValueOn(xyz)) {//inactive tile + lIter->setValuesOff(); + } + } + +private: + const TreeType2* mOtherTree; +}; + + +/// @brief Functor for use with tools::foreach() to compute the boolean difference +/// between the value masks of corresponding leaf nodes in two trees +template +class LeafTopologyDiffOp +{ +public: + LeafTopologyDiffOp(const TreeType2& tree): mOtherTree(&tree) {} + + inline void operator()(const typename TreeType1::LeafIter& lIter) const + { + const Coord xyz = lIter->origin(); + const typename TreeType2::LeafNodeType* leaf = mOtherTree->probeConstLeaf(xyz); + if (leaf) {//leaf node + lIter->topologyDifference(*leaf, zeroVal()); + } else if (mOtherTree->isValueOn(xyz)) {//active tile + lIter->setValuesOff(); + } + } + +private: + const TreeType2* mOtherTree; +}; + + +//////////////////////////////////////// + + +/// @brief Perform a boolean intersection between two leaf nodes' topology masks. +/// @return a pointer to a new, boolean-valued tree containing the overlapping voxels. +template +inline typename TreeType1::template ValueConverter::Type::Ptr +leafTopologyIntersection(const TreeType1& lhs, const TreeType2& rhs, bool threaded = true) +{ + typedef typename TreeType1::template ValueConverter::Type BoolTreeType; + + typename BoolTreeType::Ptr topologyTree(new BoolTreeType( + lhs, /*inactiveValue=*/false, /*activeValue=*/true, TopologyCopy())); + + tools::foreach(topologyTree->beginLeaf(), + LeafTopologyIntOp(rhs), threaded); + + tools::pruneInactive(*topologyTree, threaded); + return topologyTree; +} + + +/// @brief Perform a boolean difference between two leaf nodes' topology masks. +/// @return a pointer to a new, boolean-valued tree containing the non-overlapping +/// voxels from the lhs. +template +inline typename TreeType1::template ValueConverter::Type::Ptr +leafTopologyDifference(const TreeType1& lhs, const TreeType2& rhs, bool threaded = true) +{ + typedef typename TreeType1::template ValueConverter::Type BoolTreeType; + + typename BoolTreeType::Ptr topologyTree(new BoolTreeType( + lhs, /*inactiveValue=*/false, /*activeValue=*/true, TopologyCopy())); + + tools::foreach(topologyTree->beginLeaf(), + LeafTopologyDiffOp(rhs), threaded); + + tools::pruneInactive(*topologyTree, threaded); + return topologyTree; +} + +} // namespace util +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_UTIL_HAS_BEEN_INCLUDED diff --git a/openvdb/util/logging.h b/openvdb/util/logging.h new file mode 100644 index 00000000..171d815c --- /dev/null +++ b/openvdb/util/logging.h @@ -0,0 +1,319 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_UTIL_LOGGING_HAS_BEEN_INCLUDED +#define OPENVDB_UTIL_LOGGING_HAS_BEEN_INCLUDED + +#include + +#ifdef OPENVDB_USE_LOG4CPLUS + +#include +#include +#include +#include +#include +#include +#include // for std::remove() +#include // for ::strrchr() +#include +#include +#include +#include + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace logging { + +/// @brief Message severity level +enum class Level { + Debug = log4cplus::DEBUG_LOG_LEVEL, + Info = log4cplus::INFO_LOG_LEVEL, + Warn = log4cplus::WARN_LOG_LEVEL, + Error = log4cplus::ERROR_LOG_LEVEL, + Fatal = log4cplus::FATAL_LOG_LEVEL +}; + + +namespace internal { + +/// @brief log4cplus layout that outputs text in different colors +/// for different log levels, using ANSI escape codes +class ColoredPatternLayout: public log4cplus::PatternLayout +{ +public: + explicit ColoredPatternLayout(const std::string& progName_, bool useColor = true) + : log4cplus::PatternLayout( + progName_.empty() ? std::string{"%5p: %m%n"} : (progName_ + " %5p: %m%n")) + , mUseColor(useColor) + , mProgName(progName_) + { + } + + ~ColoredPatternLayout() override {} + + const std::string& progName() const { return mProgName; } + + void formatAndAppend(log4cplus::tostream& strm, + const log4cplus::spi::InternalLoggingEvent& event) override + { + if (!mUseColor) { + log4cplus::PatternLayout::formatAndAppend(strm, event); + return; + } + log4cplus::tostringstream s; + switch (event.getLogLevel()) { + case log4cplus::DEBUG_LOG_LEVEL: s << "\033[32m"; break; // green + case log4cplus::ERROR_LOG_LEVEL: + case log4cplus::FATAL_LOG_LEVEL: s << "\033[31m"; break; // red + case log4cplus::INFO_LOG_LEVEL: s << "\033[36m"; break; // cyan + case log4cplus::WARN_LOG_LEVEL: s << "\033[35m"; break; // magenta + } + log4cplus::PatternLayout::formatAndAppend(s, event); + strm << s.str() << "\033[0m" << std::flush; + } + +// Disable deprecation warnings for std::auto_ptr. +#if defined(__ICC) + #pragma warning push + #pragma warning disable:1478 +#elif defined(__clang__) + #pragma clang diagnostic push + #pragma clang diagnostic ignored "-Wdeprecated-declarations" +#elif defined(__GNUC__) + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + +#if defined(LOG4CPLUS_VERSION) && defined(LOG4CPLUS_MAKE_VERSION) + #if LOG4CPLUS_VERSION >= LOG4CPLUS_MAKE_VERSION(2, 0, 0) + // In log4cplus 2.0.0, std::auto_ptr was replaced with std::unique_ptr. + using Ptr = std::unique_ptr; + #else + using Ptr = std::auto_ptr; + #endif +#else + using Ptr = std::auto_ptr; +#endif + + static Ptr create(const std::string& progName_, bool useColor = true) + { + return Ptr{new ColoredPatternLayout{progName_, useColor}}; + } + +#if defined(__ICC) + #pragma warning pop +#elif defined(__clang__) + #pragma clang diagnostic pop +#elif defined(__GNUC__) + #pragma GCC diagnostic pop +#endif + +private: + bool mUseColor = true; + std::string mProgName; +}; // class ColoredPatternLayout + + +inline log4cplus::Logger +getLogger() +{ + return log4cplus::Logger::getInstance(LOG4CPLUS_TEXT("openvdb")); +} + + +inline log4cplus::SharedAppenderPtr +getAppender() +{ + return getLogger().getAppender(LOG4CPLUS_TEXT("OPENVDB")); +} + +} // namespace internal + + +/// @brief Return the current logging level. +inline Level +getLevel() +{ + switch (internal::getLogger().getLogLevel()) { + case log4cplus::DEBUG_LOG_LEVEL: return Level::Debug; + case log4cplus::INFO_LOG_LEVEL: return Level::Info; + case log4cplus::WARN_LOG_LEVEL: return Level::Warn; + case log4cplus::ERROR_LOG_LEVEL: return Level::Error; + case log4cplus::FATAL_LOG_LEVEL: break; + } + return Level::Fatal; +} + + +/// @brief Set the logging level. (Lower-level messages will be suppressed.) +inline void +setLevel(Level lvl) +{ + internal::getLogger().setLogLevel(static_cast(lvl)); +} + + +/// @brief If "-debug", "-info", "-warn", "-error" or "-fatal" is found +/// in the given array of command-line arguments, set the logging level +/// appropriately and remove the relevant argument(s) from the array. +inline void +setLevel(int& argc, char* argv[]) +{ + for (int i = 1; i < argc; ++i) { // note: skip argv[0] + const std::string arg{argv[i]}; + bool remove = true; + if (arg == "-debug") { setLevel(Level::Debug); } + else if (arg == "-error") { setLevel(Level::Error); } + else if (arg == "-fatal") { setLevel(Level::Fatal); } + else if (arg == "-info") { setLevel(Level::Info); } + else if (arg == "-warn") { setLevel(Level::Warn); } + else { remove = false; } + if (remove) argv[i] = nullptr; + } + auto end = std::remove(argv + 1, argv + argc, nullptr); + argc = static_cast(end - argv); +} + + +/// @brief Specify a program name to be displayed in log messages. +inline void +setProgramName(const std::string& progName, bool useColor = true) +{ + // Change the layout of the OpenVDB appender to use colored text + // and to incorporate the supplied program name. + if (auto appender = internal::getAppender()) { + appender->setLayout(internal::ColoredPatternLayout::create(progName, useColor)); + } +} + + +/// @brief Initialize the logging system if it is not already initialized. +inline void +initialize(bool useColor = true) +{ + log4cplus::initialize(); + + if (internal::getAppender()) return; // already initialized + + // Create the OpenVDB logger if it doesn't already exist. + auto logger = internal::getLogger(); + + // Disable "additivity", so that OpenVDB-related messages are directed + // to the OpenVDB logger only and are not forwarded up the logger tree. + logger.setAdditivity(false); + + // Attach a console appender to the OpenVDB logger. + if (auto appender = log4cplus::SharedAppenderPtr{new log4cplus::ConsoleAppender}) { + appender->setName(LOG4CPLUS_TEXT("OPENVDB")); + logger.addAppender(appender); + } + + setLevel(Level::Warn); + setProgramName("", useColor); +} + + +/// @brief Initialize the logging system from command-line arguments. +/// @details If "-debug", "-info", "-warn", "-error" or "-fatal" is found +/// in the given array of command-line arguments, set the logging level +/// appropriately and remove the relevant argument(s) from the array. +inline void +initialize(int& argc, char* argv[], bool useColor = true) +{ + initialize(); + + setLevel(argc, argv); + + auto progName = (argc > 0 ? argv[0] : ""); + if (const char* ptr = ::strrchr(progName, '/')) progName = ptr + 1; + setProgramName(progName, useColor); +} + +} // namespace logging +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + + +#define OPENVDB_LOG(level, message) \ + do { \ + auto _log = openvdb::logging::internal::getLogger(); \ + if (_log.isEnabledFor(log4cplus::level##_LOG_LEVEL)) { \ + std::ostringstream _buf; \ + _buf << message; \ + _log.forcedLog(log4cplus::level##_LOG_LEVEL, _buf.str(), __FILE__, __LINE__); \ + } \ + } while (0); + +/// Log an info message of the form 'someVar << "some text" << ...'. +#define OPENVDB_LOG_INFO(message) OPENVDB_LOG(INFO, message) +/// Log a warning message of the form 'someVar << "some text" << ...'. +#define OPENVDB_LOG_WARN(message) OPENVDB_LOG(WARN, message) +/// Log an error message of the form 'someVar << "some text" << ...'. +#define OPENVDB_LOG_ERROR(message) OPENVDB_LOG(ERROR, message) +/// Log a fatal error message of the form 'someVar << "some text" << ...'. +#define OPENVDB_LOG_FATAL(message) OPENVDB_LOG(FATAL, message) +#ifdef DEBUG +/// In debug builds only, log a debugging message of the form 'someVar << "text" << ...'. +#define OPENVDB_LOG_DEBUG(message) OPENVDB_LOG(DEBUG, message) +#else +/// In debug builds only, log a debugging message of the form 'someVar << "text" << ...'. +#define OPENVDB_LOG_DEBUG(message) +#endif +/// @brief Log a debugging message in both debug and optimized builds. +/// @warning Don't use this in performance-critical code. +#define OPENVDB_LOG_DEBUG_RUNTIME(message) OPENVDB_LOG(DEBUG, message) + +#else // ifdef OPENVDB_USE_LOG4CPLUS + +#include + +#define OPENVDB_LOG_INFO(mesg) +#define OPENVDB_LOG_WARN(mesg) do { std::cerr << "WARNING: " << mesg << std::endl; } while (0); +#define OPENVDB_LOG_ERROR(mesg) do { std::cerr << "ERROR: " << mesg << std::endl; } while (0); +#define OPENVDB_LOG_FATAL(mesg) do { std::cerr << "FATAL: " << mesg << std::endl; } while (0); +#define OPENVDB_LOG_DEBUG(mesg) +#define OPENVDB_LOG_DEBUG_RUNTIME(mesg) + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace logging { + +enum class Level { Debug, Info, Warn, Error, Fatal }; + +inline Level getLevel() { return Level::Warn; } +inline void setLevel(Level) {} +inline void setLevel(int&, char*[]) {} +inline void setProgramName(const std::string&, bool = true) {} +inline void initialize() {} +inline void initialize(int&, char*[], bool = true) {} + +} // namespace logging +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_USE_LOG4CPLUS + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { +namespace logging { + +/// @brief A LevelScope object sets the logging level to a given level +/// and restores it to the current level when the object goes out of scope. +struct LevelScope +{ + Level level; + explicit LevelScope(Level newLevel): level(getLevel()) { setLevel(newLevel); } + ~LevelScope() { setLevel(level); } +}; + +} // namespace logging +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_UTIL_LOGGING_HAS_BEEN_INCLUDED diff --git a/openvdb/version.h b/openvdb/version.h new file mode 100644 index 00000000..2e662bff --- /dev/null +++ b/openvdb/version.h @@ -0,0 +1,219 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +/// @file version.h +/// @brief Library and file format version numbers +/// +/// @details +/// When the library is built with the latest ABI, its namespace has the form +/// openvdb::vX_Y, where @e X and @e Y are the major and minor version numbers. +/// +/// The library can be built using an older ABI by changing the value of the +/// @b OPENVDB_ABI_VERSION_NUMBER macro (e.g., via -DOPENVDB_ABI_VERSION_NUMBER=N). +/// In that case, the namespace has the form openvdb::vX_YabiN, +/// where N is the ABI version number. +/// The ABI version must be set consistently when building code that depends on OpenVDB. +/// +/// The ABI version number defaults to the library major version number, +/// which gets incremented whenever changes are made to the ABI of the +/// Grid class or related classes (Tree, Transform, Metadata, etc.). +/// Setting the ABI version number to an earlier library version number +/// disables grid ABI changes made since that library version. +/// The OpenVDB 1.x ABI is no longer supported, and support for other old ABIs +/// might also eventually be dropped. +/// +/// The library minor version number gets incremented whenever a change is made +/// to any aspect of the public API (not just the grid API) that necessitates +/// changes to client code. Changes to APIs in private or internal namespaces +/// do not trigger a minor version number increment; such APIs should not be used +/// in client code. +/// +/// A patch version number increment indicates a change—usually a new feature +/// or a bug fix—that does not necessitate changes to client code but rather +/// only recompilation of that code (because the library namespace incorporates +/// the version number). +/// +/// The file format version number gets incremented when it becomes possible +/// to write files that cannot safely be read with older versions of the library. +/// Not all files written in a newer format are incompatible with older libraries, however. +/// And in general, files containing grids of unknown type can be read safely, +/// although the unknown grids will not be accessible. + +#ifndef OPENVDB_VERSION_HAS_BEEN_INCLUDED +#define OPENVDB_VERSION_HAS_BEEN_INCLUDED + +#include "Platform.h" +#include // uint32_t + + +// Library major, minor and patch version numbers +#define OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER 7 +#define OPENVDB_LIBRARY_MINOR_VERSION_NUMBER 0 +#define OPENVDB_LIBRARY_PATCH_VERSION_NUMBER 0 + +// If OPENVDB_ABI_VERSION_NUMBER is already defined (e.g., via -DOPENVDB_ABI_VERSION_NUMBER=N) +// use that ABI version. Otherwise, use this library version's default ABI. +#ifdef OPENVDB_ABI_VERSION_NUMBER + #if OPENVDB_ABI_VERSION_NUMBER > OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER + #error expected OPENVDB_ABI_VERSION_NUMBER <= OPENVDB_LIBRARY_MAJOR VERSION_NUMBER + #endif +#else + // Older versions of the library used the macros OPENVDB_2_ABI_COMPATIBLE + // and OPENVDB_3_ABI_COMPATIBLE. For now, continue to support them. + #if defined OPENVDB_2_ABI_COMPATIBLE ///< @todo deprecated + #define OPENVDB_ABI_VERSION_NUMBER 2 + #elif defined OPENVDB_3_ABI_COMPATIBLE ///< @todo deprecated + #define OPENVDB_ABI_VERSION_NUMBER 3 + #else + #define OPENVDB_ABI_VERSION_NUMBER OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER + #endif +#endif + +// If using an OPENVDB_ABI_VERSION_NUMBER that has been deprecated, issue a message +// directive. Note that an error is also set in openvdb.cc which enforces stricter +// behavior during compilation of the library. Both can be optionally suppressed +// by defining OPENVDB_USE_DEPRECATED_ABI. +#ifndef OPENVDB_USE_DEPRECATED_ABI + #if OPENVDB_ABI_VERSION_NUMBER == 4 + PRAGMA(message("NOTE: ABI = 4 is deprecated, define OPENVDB_USE_DEPRECATED_ABI " + "to suppress this message")) + #endif +#endif + +#if OPENVDB_ABI_VERSION_NUMBER == OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER + /// @brief The version namespace name for this library version + /// @hideinitializer + /// + /// When the ABI version number matches the library major version number, + /// symbols are named as in the following examples: + /// - @b openvdb::vX_Y::Vec3i + /// - @b openvdb::vX_Y::io::File + /// - @b openvdb::vX_Y::tree::Tree + /// + /// where X and Y are the major and minor version numbers. + /// + /// When the ABI version number does not match the library major version number, + /// symbol names include the ABI version: + /// - @b openvdb::vX_YabiN::Vec3i + /// - @b openvdb::vX_YabiN::io::File + /// - @b openvdb::vX_YabiN::tree::Tree + /// + /// where X, Y and N are the major, minor and ABI version numbers, respectively. + #define OPENVDB_VERSION_NAME \ + OPENVDB_PREPROC_CONCAT(v, \ + OPENVDB_PREPROC_CONCAT(OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER, \ + OPENVDB_PREPROC_CONCAT(_, OPENVDB_LIBRARY_MINOR_VERSION_NUMBER))) +#else + // This duplication of code is necessary to avoid issues with recursive macro expansion. + #define OPENVDB_VERSION_NAME \ + OPENVDB_PREPROC_CONCAT(v, \ + OPENVDB_PREPROC_CONCAT(OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER, \ + OPENVDB_PREPROC_CONCAT(_, \ + OPENVDB_PREPROC_CONCAT(OPENVDB_LIBRARY_MINOR_VERSION_NUMBER, \ + OPENVDB_PREPROC_CONCAT(abi, OPENVDB_ABI_VERSION_NUMBER))))) +#endif + +/// @brief Library version number string of the form ".." +/// @details This is a macro rather than a static constant because we typically +/// want the compile-time version number, not the runtime version number +/// (although the two are usually the same). +/// @hideinitializer +#define OPENVDB_LIBRARY_VERSION_STRING \ + OPENVDB_PREPROC_STRINGIFY(OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER) "." \ + OPENVDB_PREPROC_STRINGIFY(OPENVDB_LIBRARY_MINOR_VERSION_NUMBER) "." \ + OPENVDB_PREPROC_STRINGIFY(OPENVDB_LIBRARY_PATCH_VERSION_NUMBER) + +/// @brief Library version number string of the form "..abi" +/// @details This is a macro rather than a static constant because we typically +/// want the compile-time version number, not the runtime version number +/// (although the two are usually the same). +/// @hideinitializer +#define OPENVDB_LIBRARY_ABI_VERSION_STRING \ + OPENVDB_LIBRARY_VERSION_STRING "abi" OPENVDB_PREPROC_STRINGIFY(OPENVDB_ABI_VERSION_NUMBER) + +/// Library version number as a packed integer ("%02x%02x%04x", major, minor, patch) +#define OPENVDB_LIBRARY_VERSION_NUMBER \ + ((OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER << 24) | \ + ((OPENVDB_LIBRARY_MINOR_VERSION_NUMBER & 0xFF) << 16) | \ + (OPENVDB_LIBRARY_PATCH_VERSION_NUMBER & 0xFFFF)) + + +/// By default, the @b OPENVDB_REQUIRE_VERSION_NAME macro is undefined, and +/// symbols from the version namespace are promoted to the top-level namespace +/// so that, for example, @b openvdb::v5_0::io::File can be referred to +/// simply as @b openvdb::io::File. +/// +/// When @b OPENVDB_REQUIRE_VERSION_NAME is defined, symbols must be +/// fully namespace-qualified. +/// @hideinitializer +#ifdef OPENVDB_REQUIRE_VERSION_NAME +#define OPENVDB_USE_VERSION_NAMESPACE +#else +// The empty namespace clause below ensures that OPENVDB_VERSION_NAME +// is recognized as a namespace name. +#define OPENVDB_USE_VERSION_NAMESPACE \ + namespace OPENVDB_VERSION_NAME {} \ + using namespace OPENVDB_VERSION_NAME; +#endif + + +namespace openvdb { +OPENVDB_USE_VERSION_NAMESPACE +namespace OPENVDB_VERSION_NAME { + +/// @brief The magic number is stored in the first four bytes of every VDB file. +/// @details This can be used to quickly test whether we have a valid file or not. +const int32_t OPENVDB_MAGIC = 0x56444220; + +// Library major, minor and patch version numbers +const uint32_t + OPENVDB_LIBRARY_MAJOR_VERSION = OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER, + OPENVDB_LIBRARY_MINOR_VERSION = OPENVDB_LIBRARY_MINOR_VERSION_NUMBER, + OPENVDB_LIBRARY_PATCH_VERSION = OPENVDB_LIBRARY_PATCH_VERSION_NUMBER; +/// Library version number as a packed integer ("%02x%02x%04x", major, minor, patch) +const uint32_t OPENVDB_LIBRARY_VERSION = OPENVDB_LIBRARY_VERSION_NUMBER; +// ABI version number +const uint32_t OPENVDB_ABI_VERSION = OPENVDB_ABI_VERSION_NUMBER; + +/// @brief The current version number of the VDB file format +/// @details This can be used to enable various backwards compatibility switches +/// or to reject files that cannot be read. +const uint32_t OPENVDB_FILE_VERSION = 224; + +/// Notable file format version numbers +enum { + OPENVDB_FILE_VERSION_ROOTNODE_MAP = 213, + OPENVDB_FILE_VERSION_INTERNALNODE_COMPRESSION = 214, + OPENVDB_FILE_VERSION_SIMPLIFIED_GRID_TYPENAME = 215, + OPENVDB_FILE_VERSION_GRID_INSTANCING = 216, + OPENVDB_FILE_VERSION_BOOL_LEAF_OPTIMIZATION = 217, + OPENVDB_FILE_VERSION_BOOST_UUID = 218, + OPENVDB_FILE_VERSION_NO_GRIDMAP = 219, + OPENVDB_FILE_VERSION_NEW_TRANSFORM = 219, + OPENVDB_FILE_VERSION_SELECTIVE_COMPRESSION = 220, + OPENVDB_FILE_VERSION_FLOAT_FRUSTUM_BBOX = 221, + OPENVDB_FILE_VERSION_NODE_MASK_COMPRESSION = 222, + OPENVDB_FILE_VERSION_BLOSC_COMPRESSION = 223, + OPENVDB_FILE_VERSION_POINT_INDEX_GRID = 223, + OPENVDB_FILE_VERSION_MULTIPASS_IO = 224 +}; + + +/// Return a library version number string of the form "..". +inline constexpr const char* getLibraryVersionString() { return OPENVDB_LIBRARY_VERSION_STRING; } +/// Return a library version number string of the form "..abi". +inline constexpr const char* getLibraryAbiVersionString() { + return OPENVDB_LIBRARY_ABI_VERSION_STRING; +} + + +struct VersionId { + uint32_t first, second; + VersionId(): first(0), second(0) {} + VersionId(uint32_t major, uint32_t minor): first(major), second(minor) {} +}; + +} // namespace OPENVDB_VERSION_NAME +} // namespace openvdb + +#endif // OPENVDB_VERSION_HAS_BEEN_INCLUDED diff --git a/openvdb/viewer/Camera.cc b/openvdb/viewer/Camera.cc new file mode 100644 index 00000000..44215368 --- /dev/null +++ b/openvdb/viewer/Camera.cc @@ -0,0 +1,249 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Camera.h" + +#include + +#ifdef OPENVDB_USE_GLFW_3 +#define GLFW_INCLUDE_GLU +#include +#else // if !defined(OPENVDB_USE_GLFW_3) +#if defined(__APPLE__) || defined(MACOSX) +#include +#include +#else +#include +#include +#endif +#include +#endif // !defined(OPENVDB_USE_GLFW_3) + + +namespace openvdb_viewer { + +const double Camera::sDeg2rad = M_PI / 180.0; + + +Camera::Camera() + : mFov(65.0) + , mNearPlane(0.1) + , mFarPlane(10000.0) + , mTarget(openvdb::Vec3d(0.0)) + , mLookAt(mTarget) + , mUp(openvdb::Vec3d(0.0, 1.0, 0.0)) + , mForward(openvdb::Vec3d(0.0, 0.0, 1.0)) + , mRight(openvdb::Vec3d(1.0, 0.0, 0.0)) + , mEye(openvdb::Vec3d(0.0, 0.0, -1.0)) + , mTumblingSpeed(0.5) + , mZoomSpeed(0.2) + , mStrafeSpeed(0.05) + , mHead(30.0) + , mPitch(45.0) + , mTargetDistance(25.0) + , mDistance(mTargetDistance) + , mMouseDown(false) + , mStartTumbling(false) + , mZoomMode(false) + , mChanged(true) + , mNeedsDisplay(true) + , mMouseXPos(0.0) + , mMouseYPos(0.0) +#if GLFW_VERSION_MAJOR >= 3 + , mWindow(nullptr) +#endif +{ +} + + +void +Camera::lookAt(const openvdb::Vec3d& p, double dist) +{ + mLookAt = p; + mDistance = dist; + mNeedsDisplay = true; +} + + +void +Camera::lookAtTarget() +{ + mLookAt = mTarget; + mDistance = mTargetDistance; + mNeedsDisplay = true; +} + + +void +Camera::setSpeed(double zoomSpeed, double strafeSpeed, double tumblingSpeed) +{ + mZoomSpeed = std::max(0.0001, mDistance * zoomSpeed); + mStrafeSpeed = std::max(0.0001, mDistance * strafeSpeed); + mTumblingSpeed = std::max(0.2, mDistance * tumblingSpeed); + mTumblingSpeed = std::min(1.0, mDistance * tumblingSpeed); +} + + +void +Camera::setTarget(const openvdb::Vec3d& p, double dist) +{ + mTarget = p; + mTargetDistance = dist; +} + + +void +Camera::aim() +{ +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow == nullptr) return; +#endif + + // Get the window size + int width, height; +#if GLFW_VERSION_MAJOR >= 3 + glfwGetFramebufferSize(mWindow, &width, &height); +#else + glfwGetWindowSize(&width, &height); +#endif + + // Make sure that height is non-zero to avoid division by zero + height = std::max(1, height); + + glViewport(0, 0, width, height); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + // Set up the projection matrix + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + // Window aspect (assumes square pixels) + double aspectRatio = double(width) / double(height); + + // Set perspective view (fov is in degrees in the y direction.) + gluPerspective(mFov, aspectRatio, mNearPlane, mFarPlane); + + if (mChanged) { + + mChanged = false; + + mEye[0] = mLookAt[0] + mDistance * std::cos(mHead * sDeg2rad) * std::cos(mPitch * sDeg2rad); + mEye[1] = mLookAt[1] + mDistance * std::sin(mHead * sDeg2rad); + mEye[2] = mLookAt[2] + mDistance * std::cos(mHead * sDeg2rad) * std::sin(mPitch * sDeg2rad); + + mForward = mLookAt - mEye; + mForward.normalize(); + + mUp[1] = std::cos(mHead * sDeg2rad) > 0 ? 1.0 : -1.0; + mRight = mForward.cross(mUp); + } + + // Set up modelview matrix + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + gluLookAt(mEye[0], mEye[1], mEye[2], + mLookAt[0], mLookAt[1], mLookAt[2], + mUp[0], mUp[1], mUp[2]); + mNeedsDisplay = false; +} + + +void +Camera::keyCallback(int key, int) +{ +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow == nullptr) return; + int state = glfwGetKey(mWindow, key); +#else + int state = glfwGetKey(key); +#endif + switch (state) { + case GLFW_PRESS: + switch(key) { + case GLFW_KEY_SPACE: + mZoomMode = true; + break; + } + break; + case GLFW_RELEASE: + switch(key) { + case GLFW_KEY_SPACE: + mZoomMode = false; + break; + } + break; + } + mChanged = true; +} + + +void +Camera::mouseButtonCallback(int button, int action) +{ + if (button == GLFW_MOUSE_BUTTON_LEFT) { + if (action == GLFW_PRESS) mMouseDown = true; + else if (action == GLFW_RELEASE) mMouseDown = false; + } else if (button == GLFW_MOUSE_BUTTON_RIGHT) { + if (action == GLFW_PRESS) { + mMouseDown = true; + mZoomMode = true; + } else if (action == GLFW_RELEASE) { + mMouseDown = false; + mZoomMode = false; + } + } + if (action == GLFW_RELEASE) mMouseDown = false; + + mStartTumbling = true; + mChanged = true; +} + + +void +Camera::mousePosCallback(int x, int y) +{ + if (mStartTumbling) { + mMouseXPos = x; + mMouseYPos = y; + mStartTumbling = false; + } + + double dx, dy; + dx = x - mMouseXPos; + dy = y - mMouseYPos; + + if (mMouseDown && !mZoomMode) { + mNeedsDisplay = true; + mHead += dy * mTumblingSpeed; + mPitch += dx * mTumblingSpeed; + } else if (mMouseDown && mZoomMode) { + mNeedsDisplay = true; + mLookAt += (dy * mUp - dx * mRight) * mStrafeSpeed; + } + + mMouseXPos = x; + mMouseYPos = y; + mChanged = true; +} + + +void +Camera::mouseWheelCallback(int pos, int prevPos) +{ + double speed = std::abs(prevPos - pos); + + if (prevPos < pos) { + mDistance += speed * mZoomSpeed; + } else { + double temp = mDistance - speed * mZoomSpeed; + mDistance = std::max(0.0, temp); + } + setSpeed(); + + mChanged = true; + mNeedsDisplay = true; +} + +} // namespace openvdb_viewer diff --git a/openvdb/viewer/Camera.h b/openvdb/viewer/Camera.h new file mode 100644 index 00000000..d9905045 --- /dev/null +++ b/openvdb/viewer/Camera.h @@ -0,0 +1,66 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 +// +/// @file Camera.h +/// @brief Basic GL camera class + +#ifndef OPENVDB_VIEWER_CAMERA_HAS_BEEN_INCLUDED +#define OPENVDB_VIEWER_CAMERA_HAS_BEEN_INCLUDED + +#include + +#ifdef OPENVDB_USE_GLFW_3 +struct GLFWwindow; // forward declaration +#endif + + +namespace openvdb_viewer { + +class Camera +{ +public: + Camera(); + +#ifdef OPENVDB_USE_GLFW_3 + void setWindow(GLFWwindow* w) { mWindow = w; } +#endif + + void aim(); + + void lookAt(const openvdb::Vec3d& p, double dist = 1.0); + void lookAtTarget(); + + void setTarget(const openvdb::Vec3d& p, double dist = 1.0); + + void setNearFarPlanes(double n, double f) { mNearPlane = n; mFarPlane = f; } + void setFieldOfView(double degrees) { mFov = degrees; } + void setSpeed(double zoomSpeed = 0.1, double strafeSpeed = 0.002, double tumblingSpeed = 0.02); + + void keyCallback(int key, int action); + void mouseButtonCallback(int button, int action); + void mousePosCallback(int x, int y); + void mouseWheelCallback(int pos, int prevPos); + + bool needsDisplay() const { return mNeedsDisplay; } + +private: + // Camera parameters + double mFov, mNearPlane, mFarPlane; + openvdb::Vec3d mTarget, mLookAt, mUp, mForward, mRight, mEye; + double mTumblingSpeed, mZoomSpeed, mStrafeSpeed; + double mHead, mPitch, mTargetDistance, mDistance; + + // Input states + bool mMouseDown, mStartTumbling, mZoomMode, mChanged, mNeedsDisplay; + double mMouseXPos, mMouseYPos; + +#ifdef OPENVDB_USE_GLFW_3 + GLFWwindow* mWindow; +#endif + + static const double sDeg2rad; +}; // class Camera + +} // namespace openvdb_viewer + +#endif // OPENVDB_VIEWER_CAMERA_HAS_BEEN_INCLUDED diff --git a/openvdb/viewer/ClipBox.cc b/openvdb/viewer/ClipBox.cc new file mode 100644 index 00000000..33e99c1d --- /dev/null +++ b/openvdb/viewer/ClipBox.cc @@ -0,0 +1,266 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "ClipBox.h" + + +namespace openvdb_viewer { + +ClipBox::ClipBox() + : mStepSize(1.0) + , mBBox() + , mXIsActive(false) + , mYIsActive(false) + , mZIsActive(false) + , mShiftIsDown(false) + , mCtrlIsDown(false) +{ + GLdouble front [] = { 0.0, 0.0, 1.0, 0.0}; + std::copy(front, front + 4, mFrontPlane); + + GLdouble back [] = { 0.0, 0.0,-1.0, 0.0}; + std::copy(back, back + 4, mBackPlane); + + GLdouble left [] = { 1.0, 0.0, 0.0, 0.0}; + std::copy(left, left + 4, mLeftPlane); + + GLdouble right [] = {-1.0, 0.0, 0.0, 0.0}; + std::copy(right, right + 4, mRightPlane); + + GLdouble top [] = { 0.0, 1.0, 0.0, 0.0}; + std::copy(top, top + 4, mTopPlane); + + GLdouble bottom [] = { 0.0,-1.0, 0.0, 0.0}; + std::copy(bottom, bottom + 4, mBottomPlane); +} + + +void +ClipBox::setBBox(const openvdb::BBoxd& bbox) +{ + mBBox = bbox; + reset(); +} + + +void +ClipBox::update(double steps) +{ + if (mXIsActive) { + GLdouble s = steps * mStepSize.x() * 4.0; + + if (mShiftIsDown || mCtrlIsDown) { + mLeftPlane[3] -= s; + mLeftPlane[3] = -std::min(-mLeftPlane[3], (mRightPlane[3] - mStepSize.x())); + mLeftPlane[3] = -std::max(-mLeftPlane[3], mBBox.min().x()); + } + + if (!mShiftIsDown || mCtrlIsDown) { + mRightPlane[3] += s; + mRightPlane[3] = std::min(mRightPlane[3], mBBox.max().x()); + mRightPlane[3] = std::max(mRightPlane[3], (-mLeftPlane[3] + mStepSize.x())); + } + } + + if (mYIsActive) { + GLdouble s = steps * mStepSize.y() * 4.0; + + if (mShiftIsDown || mCtrlIsDown) { + mTopPlane[3] -= s; + mTopPlane[3] = -std::min(-mTopPlane[3], (mBottomPlane[3] - mStepSize.y())); + mTopPlane[3] = -std::max(-mTopPlane[3], mBBox.min().y()); + } + + if (!mShiftIsDown || mCtrlIsDown) { + mBottomPlane[3] += s; + mBottomPlane[3] = std::min(mBottomPlane[3], mBBox.max().y()); + mBottomPlane[3] = std::max(mBottomPlane[3], (-mTopPlane[3] + mStepSize.y())); + } + } + + if (mZIsActive) { + GLdouble s = steps * mStepSize.z() * 4.0; + + if (mShiftIsDown || mCtrlIsDown) { + mFrontPlane[3] -= s; + mFrontPlane[3] = -std::min(-mFrontPlane[3], (mBackPlane[3] - mStepSize.z())); + mFrontPlane[3] = -std::max(-mFrontPlane[3], mBBox.min().z()); + } + + if (!mShiftIsDown || mCtrlIsDown) { + mBackPlane[3] += s; + mBackPlane[3] = std::min(mBackPlane[3], mBBox.max().z()); + mBackPlane[3] = std::max(mBackPlane[3], (-mFrontPlane[3] + mStepSize.z())); + } + } +} + + +void +ClipBox::reset() +{ + mFrontPlane[3] = std::abs(mBBox.min().z()); + mBackPlane[3] = mBBox.max().z(); + + mLeftPlane[3] = std::abs(mBBox.min().x()); + mRightPlane[3] = mBBox.max().x(); + + mTopPlane[3] = std::abs(mBBox.min().y()); + mBottomPlane[3] = mBBox.max().y(); +} + + +void +ClipBox::update() const +{ + glClipPlane(GL_CLIP_PLANE0, mFrontPlane); + glClipPlane(GL_CLIP_PLANE1, mBackPlane); + glClipPlane(GL_CLIP_PLANE2, mLeftPlane); + glClipPlane(GL_CLIP_PLANE3, mRightPlane); + glClipPlane(GL_CLIP_PLANE4, mTopPlane); + glClipPlane(GL_CLIP_PLANE5, mBottomPlane); +} + + +void +ClipBox::enableClipping() const +{ + update(); + if (-mFrontPlane[3] > mBBox.min().z()) glEnable(GL_CLIP_PLANE0); + if (mBackPlane[3] < mBBox.max().z()) glEnable(GL_CLIP_PLANE1); + if (-mLeftPlane[3] > mBBox.min().x()) glEnable(GL_CLIP_PLANE2); + if (mRightPlane[3] < mBBox.max().x()) glEnable(GL_CLIP_PLANE3); + if (-mTopPlane[3] > mBBox.min().y()) glEnable(GL_CLIP_PLANE4); + if (mBottomPlane[3] < mBBox.max().y()) glEnable(GL_CLIP_PLANE5); +} + + +void +ClipBox::disableClipping() const +{ + glDisable(GL_CLIP_PLANE0); + glDisable(GL_CLIP_PLANE1); + glDisable(GL_CLIP_PLANE2); + glDisable(GL_CLIP_PLANE3); + glDisable(GL_CLIP_PLANE4); + glDisable(GL_CLIP_PLANE5); +} + + +void +ClipBox::render() +{ + bool drawBbox = false; + + const GLenum geoMode = GL_LINE_LOOP; + + glColor3d(0.1, 0.1, 0.9); + if (-mFrontPlane[3] > mBBox.min().z()) { + glBegin(geoMode); + glVertex3d(mBBox.min().x(), mBBox.min().y(), -mFrontPlane[3]); + glVertex3d(mBBox.min().x(), mBBox.max().y(), -mFrontPlane[3]); + glVertex3d(mBBox.max().x(), mBBox.max().y(), -mFrontPlane[3]); + glVertex3d(mBBox.max().x(), mBBox.min().y(), -mFrontPlane[3]); + glEnd(); + drawBbox = true; + } + + if (mBackPlane[3] < mBBox.max().z()) { + glBegin(geoMode); + glVertex3d(mBBox.min().x(), mBBox.min().y(), mBackPlane[3]); + glVertex3d(mBBox.min().x(), mBBox.max().y(), mBackPlane[3]); + glVertex3d(mBBox.max().x(), mBBox.max().y(), mBackPlane[3]); + glVertex3d(mBBox.max().x(), mBBox.min().y(), mBackPlane[3]); + glEnd(); + drawBbox = true; + } + + glColor3d(0.9, 0.1, 0.1); + if (-mLeftPlane[3] > mBBox.min().x()) { + glBegin(geoMode); + glVertex3d(-mLeftPlane[3], mBBox.min().y(), mBBox.min().z()); + glVertex3d(-mLeftPlane[3], mBBox.max().y(), mBBox.min().z()); + glVertex3d(-mLeftPlane[3], mBBox.max().y(), mBBox.max().z()); + glVertex3d(-mLeftPlane[3], mBBox.min().y(), mBBox.max().z()); + glEnd(); + drawBbox = true; + } + + if (mRightPlane[3] < mBBox.max().x()) { + glBegin(geoMode); + glVertex3d(mRightPlane[3], mBBox.min().y(), mBBox.min().z()); + glVertex3d(mRightPlane[3], mBBox.max().y(), mBBox.min().z()); + glVertex3d(mRightPlane[3], mBBox.max().y(), mBBox.max().z()); + glVertex3d(mRightPlane[3], mBBox.min().y(), mBBox.max().z()); + glEnd(); + drawBbox = true; + } + + glColor3d(0.1, 0.9, 0.1); + if (-mTopPlane[3] > mBBox.min().y()) { + glBegin(geoMode); + glVertex3d(mBBox.min().x(), -mTopPlane[3], mBBox.min().z()); + glVertex3d(mBBox.min().x(), -mTopPlane[3], mBBox.max().z()); + glVertex3d(mBBox.max().x(), -mTopPlane[3], mBBox.max().z()); + glVertex3d(mBBox.max().x(), -mTopPlane[3], mBBox.min().z()); + glEnd(); + drawBbox = true; + } + + if (mBottomPlane[3] < mBBox.max().y()) { + glBegin(geoMode); + glVertex3d(mBBox.min().x(), mBottomPlane[3], mBBox.min().z()); + glVertex3d(mBBox.min().x(), mBottomPlane[3], mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBottomPlane[3], mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBottomPlane[3], mBBox.min().z()); + glEnd(); + drawBbox = true; + } + + if (drawBbox) { + glColor3d(0.5, 0.5, 0.5); + glBegin(GL_LINE_LOOP); + glVertex3d(mBBox.min().x(), mBBox.min().y(), mBBox.min().z()); + glVertex3d(mBBox.min().x(), mBBox.min().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.min().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.min().y(), mBBox.min().z()); + glEnd(); + + glBegin(GL_LINE_LOOP); + glVertex3d(mBBox.min().x(), mBBox.max().y(), mBBox.min().z()); + glVertex3d(mBBox.min().x(), mBBox.max().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.max().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.max().y(), mBBox.min().z()); + glEnd(); + + glBegin(GL_LINES); + glVertex3d(mBBox.min().x(), mBBox.min().y(), mBBox.min().z()); + glVertex3d(mBBox.min().x(), mBBox.max().y(), mBBox.min().z()); + glVertex3d(mBBox.min().x(), mBBox.min().y(), mBBox.max().z()); + glVertex3d(mBBox.min().x(), mBBox.max().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.min().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.max().y(), mBBox.max().z()); + glVertex3d(mBBox.max().x(), mBBox.min().y(), mBBox.min().z()); + glVertex3d(mBBox.max().x(), mBBox.max().y(), mBBox.min().z()); + glEnd(); + } +} + + +//////////////////////////////////////// + + +bool +ClipBox::mouseButtonCallback(int /*button*/, int /*action*/) +{ + return false; // unhandled +} + + +bool +ClipBox::mousePosCallback(int /*x*/, int /*y*/) +{ + return false; // unhandled +} + +} // namespace openvdb_viewer diff --git a/openvdb/viewer/ClipBox.h b/openvdb/viewer/ClipBox.h new file mode 100644 index 00000000..68a53fe6 --- /dev/null +++ b/openvdb/viewer/ClipBox.h @@ -0,0 +1,60 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_VIEWER_CLIPBOX_HAS_BEEN_INCLUDED +#define OPENVDB_VIEWER_CLIPBOX_HAS_BEEN_INCLUDED + +#include + +#if defined(__APPLE__) || defined(MACOSX) +#include +#include +#else +#include +#include +#endif + + +namespace openvdb_viewer { + +class ClipBox +{ +public: + ClipBox(); + + void enableClipping() const; + void disableClipping() const; + + void setBBox(const openvdb::BBoxd&); + void setStepSize(const openvdb::Vec3d& s) { mStepSize = s; } + + void render(); + + void update(double steps); + void reset(); + + bool isActive() const { return (mXIsActive || mYIsActive ||mZIsActive); } + + bool& activateXPlanes() { return mXIsActive; } + bool& activateYPlanes() { return mYIsActive; } + bool& activateZPlanes() { return mZIsActive; } + + bool& shiftIsDown() { return mShiftIsDown; } + bool& ctrlIsDown() { return mCtrlIsDown; } + + bool mouseButtonCallback(int button, int action); + bool mousePosCallback(int x, int y); + +private: + void update() const; + + openvdb::Vec3d mStepSize; + openvdb::BBoxd mBBox; + bool mXIsActive, mYIsActive, mZIsActive, mShiftIsDown, mCtrlIsDown; + GLdouble mFrontPlane[4], mBackPlane[4], mLeftPlane[4], mRightPlane[4], + mTopPlane[4], mBottomPlane[4]; +}; // class ClipBox + +} // namespace openvdb_viewer + +#endif // OPENVDB_VIEWER_CLIPBOX_HAS_BEEN_INCLUDED diff --git a/openvdb/viewer/Font.cc b/openvdb/viewer/Font.cc new file mode 100644 index 00000000..a9876e57 --- /dev/null +++ b/openvdb/viewer/Font.cc @@ -0,0 +1,169 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Font.h" + +#include // for OPENVDB_START_THREADSAFE_STATIC_WRITE + + +namespace openvdb_viewer { + +GLuint BitmapFont13::sOffset = 0; + +GLubyte BitmapFont13::sCharacters[95][13] = { + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18 }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x36, 0x36, 0x36 }, + { 0x00, 0x00, 0x00, 0x66, 0x66, 0xFF, 0x66, 0x66, 0xFF, 0x66, 0x66, 0x00, 0x00 }, + { 0x00, 0x00, 0x18, 0x7E, 0xFF, 0x1B, 0x1F, 0x7E, 0xF8, 0xD8, 0xFF, 0x7E, 0x18 }, + { 0x00, 0x00, 0x0E, 0x1B, 0xDB, 0x6E, 0x30, 0x18, 0x0C, 0x76, 0xDB, 0xD8, 0x70 }, + { 0x00, 0x00, 0x7F, 0xC6, 0xCF, 0xD8, 0x70, 0x70, 0xD8, 0xCC, 0xCC, 0x6C, 0x38 }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x1C, 0x0C, 0x0E }, + { 0x00, 0x00, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x18, 0x0C }, + { 0x00, 0x00, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x18, 0x30 }, + { 0x00, 0x00, 0x00, 0x00, 0x99, 0x5A, 0x3C, 0xFF, 0x3C, 0x5A, 0x99, 0x00, 0x00 }, + { 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0xFF, 0xFF, 0x18, 0x18, 0x18, 0x00, 0x00 }, + { 0x00, 0x00, 0x30, 0x18, 0x1C, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x60, 0x60, 0x30, 0x30, 0x18, 0x18, 0x0C, 0x0C, 0x06, 0x06, 0x03, 0x03 }, + { 0x00, 0x00, 0x3C, 0x66, 0xC3, 0xE3, 0xF3, 0xDB, 0xCF, 0xC7, 0xC3, 0x66, 0x3C }, + { 0x00, 0x00, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x38, 0x18 }, + { 0x00, 0x00, 0xFF, 0xC0, 0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0xE7, 0x7E }, + { 0x00, 0x00, 0x7E, 0xE7, 0x03, 0x03, 0x07, 0x7E, 0x07, 0x03, 0x03, 0xE7, 0x7E }, + { 0x00, 0x00, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0xFF, 0xCC, 0x6C, 0x3C, 0x1C, 0x0C }, + { 0x00, 0x00, 0x7E, 0xE7, 0x03, 0x03, 0x07, 0xFE, 0xC0, 0xC0, 0xC0, 0xC0, 0xFF }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC3, 0xC3, 0xC7, 0xFE, 0xC0, 0xC0, 0xC0, 0xE7, 0x7E }, + { 0x00, 0x00, 0x30, 0x30, 0x30, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x03, 0x03, 0xFF }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC3, 0xC3, 0xE7, 0x7E, 0xE7, 0xC3, 0xC3, 0xE7, 0x7E }, + { 0x00, 0x00, 0x7E, 0xE7, 0x03, 0x03, 0x03, 0x7F, 0xE7, 0xC3, 0xC3, 0xE7, 0x7E }, + { 0x00, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x30, 0x18, 0x1C, 0x1C, 0x00, 0x00, 0x1C, 0x1C, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06 }, + { 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60 }, + { 0x00, 0x00, 0x18, 0x00, 0x00, 0x18, 0x18, 0x0C, 0x06, 0x03, 0xC3, 0xC3, 0x7E }, + { 0x00, 0x00, 0x3F, 0x60, 0xCF, 0xDB, 0xD3, 0xDD, 0xC3, 0x7E, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC3, 0xC3, 0xC3, 0xC3, 0xFF, 0xC3, 0xC3, 0xC3, 0x66, 0x3C, 0x18 }, + { 0x00, 0x00, 0xFE, 0xC7, 0xC3, 0xC3, 0xC7, 0xFE, 0xC7, 0xC3, 0xC3, 0xC7, 0xFE }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xE7, 0x7E }, + { 0x00, 0x00, 0xFC, 0xCE, 0xC7, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC7, 0xCE, 0xFC }, + { 0x00, 0x00, 0xFF, 0xC0, 0xC0, 0xC0, 0xC0, 0xFC, 0xC0, 0xC0, 0xC0, 0xC0, 0xFF }, + { 0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xFC, 0xC0, 0xC0, 0xC0, 0xFF }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC3, 0xC3, 0xCF, 0xC0, 0xC0, 0xC0, 0xC0, 0xE7, 0x7E }, + { 0x00, 0x00, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xFF, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3 }, + { 0x00, 0x00, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7E }, + { 0x00, 0x00, 0x7C, 0xEE, 0xC6, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06 }, + { 0x00, 0x00, 0xC3, 0xC6, 0xCC, 0xD8, 0xF0, 0xE0, 0xF0, 0xD8, 0xCC, 0xC6, 0xC3 }, + { 0x00, 0x00, 0xFF, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0 }, + { 0x00, 0x00, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xDB, 0xFF, 0xFF, 0xE7, 0xC3 }, + { 0x00, 0x00, 0xC7, 0xC7, 0xCF, 0xCF, 0xDF, 0xDB, 0xFB, 0xF3, 0xF3, 0xE3, 0xE3 }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xE7, 0x7E }, + { 0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xFE, 0xC7, 0xC3, 0xC3, 0xC7, 0xFE }, + { 0x00, 0x00, 0x3F, 0x6E, 0xDF, 0xDB, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0x66, 0x3C }, + { 0x00, 0x00, 0xC3, 0xC6, 0xCC, 0xD8, 0xF0, 0xFE, 0xC7, 0xC3, 0xC3, 0xC7, 0xFE }, + { 0x00, 0x00, 0x7E, 0xE7, 0x03, 0x03, 0x07, 0x7E, 0xE0, 0xC0, 0xC0, 0xE7, 0x7E }, + { 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xFF }, + { 0x00, 0x00, 0x7E, 0xE7, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3 }, + { 0x00, 0x00, 0x18, 0x3C, 0x3C, 0x66, 0x66, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3 }, + { 0x00, 0x00, 0xC3, 0xE7, 0xFF, 0xFF, 0xDB, 0xDB, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3 }, + { 0x00, 0x00, 0xC3, 0x66, 0x66, 0x3C, 0x3C, 0x18, 0x3C, 0x3C, 0x66, 0x66, 0xC3 }, + { 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, 0x3C, 0x66, 0x66, 0xC3 }, + { 0x00, 0x00, 0xFF, 0xC0, 0xC0, 0x60, 0x30, 0x7E, 0x0C, 0x06, 0x03, 0x03, 0xFF }, + { 0x00, 0x00, 0x3C, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x3C }, + { 0x00, 0x03, 0x03, 0x06, 0x06, 0x0C, 0x0C, 0x18, 0x18, 0x30, 0x30, 0x60, 0x60 }, + { 0x00, 0x00, 0x3C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x3C }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC3, 0x66, 0x3C, 0x18 }, + { 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x38, 0x30, 0x70 }, + { 0x00, 0x00, 0x7F, 0xC3, 0xC3, 0x7F, 0x03, 0xC3, 0x7E, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xFE, 0xC3, 0xC3, 0xC3, 0xC3, 0xFE, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0 }, + { 0x00, 0x00, 0x7E, 0xC3, 0xC0, 0xC0, 0xC0, 0xC3, 0x7E, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x7F, 0xC3, 0xC3, 0xC3, 0xC3, 0x7F, 0x03, 0x03, 0x03, 0x03, 0x03 }, + { 0x00, 0x00, 0x7F, 0xC0, 0xC0, 0xFE, 0xC3, 0xC3, 0x7E, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x30, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x30, 0x30, 0x30, 0x33, 0x1E }, + { 0x7E, 0xC3, 0x03, 0x03, 0x7F, 0xC3, 0xC3, 0xC3, 0x7E, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xFE, 0xC0, 0xC0, 0xC0, 0xC0 }, + { 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x18, 0x00 }, + { 0x38, 0x6C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x00 }, + { 0x00, 0x00, 0xC6, 0xCC, 0xF8, 0xF0, 0xD8, 0xCC, 0xC6, 0xC0, 0xC0, 0xC0, 0xC0 }, + { 0x00, 0x00, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78 }, + { 0x00, 0x00, 0xDB, 0xDB, 0xDB, 0xDB, 0xDB, 0xDB, 0xFE, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xFC, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x7C, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x7C, 0x00, 0x00, 0x00, 0x00 }, + { 0xC0, 0xC0, 0xC0, 0xFE, 0xC3, 0xC3, 0xC3, 0xC3, 0xFE, 0x00, 0x00, 0x00, 0x00 }, + { 0x03, 0x03, 0x03, 0x7F, 0xC3, 0xC3, 0xC3, 0xC3, 0x7F, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xE0, 0xFE, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xFE, 0x03, 0x03, 0x7E, 0xC0, 0xC0, 0x7F, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x1C, 0x36, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x30, 0x30, 0x30, 0x00 }, + { 0x00, 0x00, 0x7E, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0xC6, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x18, 0x3C, 0x3C, 0x66, 0x66, 0xC3, 0xC3, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC3, 0xE7, 0xFF, 0xDB, 0xC3, 0xC3, 0xC3, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xC3, 0x66, 0x3C, 0x18, 0x3C, 0x66, 0xC3, 0x00, 0x00, 0x00, 0x00 }, + { 0xC0, 0x60, 0x60, 0x30, 0x18, 0x3C, 0x66, 0x66, 0xC3, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0xFF, 0x60, 0x30, 0x18, 0x0C, 0x06, 0xFF, 0x00, 0x00, 0x00, 0x00 }, + { 0x00, 0x00, 0x0F, 0x18, 0x18, 0x18, 0x38, 0xF0, 0x38, 0x18, 0x18, 0x18, 0x0F }, + { 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18 }, + { 0x00, 0x00, 0xF0, 0x18, 0x18, 0x18, 0x1C, 0x0F, 0x1C, 0x18, 0x18, 0x18, 0xF0 }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x8F, 0xF1, 0x60, 0x00, 0x00, 0x00 } +}; // sCharacters + + +void +BitmapFont13::initialize() +{ + OPENVDB_START_THREADSAFE_STATIC_WRITE + + glShadeModel(GL_FLAT); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + BitmapFont13::sOffset = glGenLists(128); + + for (GLuint c = 32; c < 127; ++c) { + glNewList(c + BitmapFont13::sOffset, GL_COMPILE); + glBitmap(8, 13, 0.0, 2.0, 10.0, 0.0, BitmapFont13::sCharacters[c-32]); + glEndList(); + } + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE +} + + +void +BitmapFont13::enableFontRendering() +{ + glPushMatrix(); + GLint vp[4] = { 0, 0, 0, 0 }; + glGetIntegerv(GL_VIEWPORT, vp); + const int width = vp[2], height = std::max(1, vp[3]); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, width, 0, height, -1.0, 1.0); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + //glShadeModel(GL_FLAT); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); +} + + +void +BitmapFont13::disableFontRendering() +{ + glFlush(); + glPopMatrix(); +} + + +void +BitmapFont13::print(GLint px, GLint py, const std::string& str) +{ + glRasterPos2i(px, py); + glPushAttrib(GL_LIST_BIT); + glListBase(BitmapFont13::sOffset); + glCallLists(GLsizei(str.length()), GL_UNSIGNED_BYTE, + reinterpret_cast(str.c_str())); + glPopAttrib(); +} + +} // namespace openvdb_viewer diff --git a/openvdb/viewer/Font.h b/openvdb/viewer/Font.h new file mode 100644 index 00000000..a0e59eda --- /dev/null +++ b/openvdb/viewer/Font.h @@ -0,0 +1,39 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_VIEWER_FONT_HAS_BEEN_INCLUDED +#define OPENVDB_VIEWER_FONT_HAS_BEEN_INCLUDED + +#include + +#if defined(__APPLE__) || defined(MACOSX) +#include +#include +#else +#include +#include +#endif + + +namespace openvdb_viewer { + +class BitmapFont13 +{ +public: + BitmapFont13() {} + + static void initialize(); + + static void enableFontRendering(); + static void disableFontRendering(); + + static void print(GLint px, GLint py, const std::string&); + +private: + static GLuint sOffset; + static GLubyte sCharacters[95][13]; +}; + +} // namespace openvdb_viewer + +#endif // OPENVDB_VIEWER_FONT_HAS_BEEN_INCLUDED diff --git a/openvdb/viewer/RenderModules.cc b/openvdb/viewer/RenderModules.cc new file mode 100644 index 00000000..e9f8ef3a --- /dev/null +++ b/openvdb/viewer/RenderModules.cc @@ -0,0 +1,1665 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "RenderModules.h" + +#include +#include +#include +#include +#include +#include +#include +#include // for std::min() +#include // for std::abs(), std::fabs(), std::floor() +#include +#include // for std::is_const + + +namespace openvdb_viewer { + +namespace util { + +/// Helper class used internally by processTypedGrid() +template +struct GridProcessor { + static inline void call(OpType& op, openvdb::GridBase::Ptr grid) { +#ifdef _MSC_VER + op.operator()(openvdb::gridPtrCast(grid)); +#else + op.template operator()(openvdb::gridPtrCast(grid)); +#endif + } +}; + +/// Helper class used internally by processTypedGrid() +template +struct GridProcessor { + static inline void call(OpType& op, openvdb::GridBase::ConstPtr grid) { +#ifdef _MSC_VER + op.operator()(openvdb::gridConstPtrCast(grid)); +#else + op.template operator()(openvdb::gridConstPtrCast(grid)); +#endif + } +}; + + +/// Helper function used internally by processTypedGrid() +template +inline void +doProcessTypedGrid(GridPtrType grid, OpType& op) +{ + GridProcessor::value>::call(op, grid); +} + + +//////////////////////////////////////// + + +/// @brief Utility function that, given a generic grid pointer, +/// calls a functor on the fully-resolved grid +/// +/// Usage: +/// @code +/// struct PruneOp { +/// template +/// void operator()(typename GridT::Ptr grid) const { grid->tree()->prune(); } +/// }; +/// +/// processTypedGrid(myGridPtr, PruneOp()); +/// @endcode +/// +/// @return @c false if the grid type is unknown or unhandled. +template +bool +processTypedGrid(GridPtrType grid, OpType& op) +{ + using namespace openvdb; + if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) { + doProcessTypedGrid(grid, op); + } + else return false; + return true; +} + + +/// @brief Utility function that, given a generic grid pointer, calls +/// a functor on the fully-resolved grid, provided that the grid's +/// voxel values are scalars +template +bool +processTypedScalarGrid(GridPtrType grid, OpType& op) +{ + using namespace openvdb; + if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else return false; + return true; +} + + +/// @brief Utility function that, given a generic grid pointer, calls +/// a functor on the fully-resolved grid, provided that the grid's +/// voxel values are scalars or PointIndex objects +template +bool +processTypedScalarOrPointDataGrid(GridPtrType grid, OpType& op) +{ + using namespace openvdb; + if (processTypedScalarGrid(grid, op)) return true; + if (grid->template isType()) { + doProcessTypedGrid(grid, op); + return true; + } + return false; +} + + +/// @brief Utility function that, given a generic grid pointer, calls +/// a functor on the fully-resolved grid, provided that the grid's +/// voxel values are vectors +template +bool +processTypedVectorGrid(GridPtrType grid, OpType& op) +{ + using namespace openvdb; + if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else if (grid->template isType()) doProcessTypedGrid(grid, op); + else return false; + return true; +} + +template +class MinMaxVoxel +{ +public: + using LeafArray = openvdb::tree::LeafManager; + using ValueType = typename TreeType::ValueType; + + // LeafArray = openvdb::tree::LeafManager leafs(myTree) + MinMaxVoxel(LeafArray&); + + void runParallel(); + void runSerial(); + + const ValueType& minVoxel() const { return mMin; } + const ValueType& maxVoxel() const { return mMax; } + + inline MinMaxVoxel(const MinMaxVoxel&, tbb::split); + inline void operator()(const tbb::blocked_range&); + inline void join(const MinMaxVoxel&); + +private: + LeafArray& mLeafArray; + ValueType mMin, mMax; +}; + + +template +MinMaxVoxel::MinMaxVoxel(LeafArray& leafs) + : mLeafArray(leafs) + , mMin(std::numeric_limits::max()) + , mMax(-mMin) +{ +} + + +template +inline +MinMaxVoxel::MinMaxVoxel(const MinMaxVoxel& rhs, tbb::split) + : mLeafArray(rhs.mLeafArray) + , mMin(std::numeric_limits::max()) + , mMax(-mMin) +{ +} + + +template +void +MinMaxVoxel::runParallel() +{ + tbb::parallel_reduce(mLeafArray.getRange(), *this); +} + + +template +void +MinMaxVoxel::runSerial() +{ + (*this)(mLeafArray.getRange()); +} + + +template +inline void +MinMaxVoxel::operator()(const tbb::blocked_range& range) +{ + typename TreeType::LeafNodeType::ValueOnCIter iter; + + for (size_t n = range.begin(); n < range.end(); ++n) { + iter = mLeafArray.leaf(n).cbeginValueOn(); + for (; iter; ++iter) { + const ValueType value = iter.getValue(); + mMin = std::min(mMin, value); + mMax = std::max(mMax, value); + } + } +} + + +template +inline void +MinMaxVoxel::join(const MinMaxVoxel& rhs) +{ + mMin = std::min(mMin, rhs.mMin); + mMax = std::max(mMax, rhs.mMax); +} + +} // namespace util + + +//////////////////////////////////////// + + +// BufferObject + +BufferObject::BufferObject(): + mVertexBuffer(0), + mNormalBuffer(0), + mIndexBuffer(0), + mColorBuffer(0), + mPrimType(GL_POINTS), + mPrimNum(0) +{ +} + +BufferObject::~BufferObject() { clear(); } + +void +BufferObject::render() const +{ + if (mPrimNum == 0 || !glIsBuffer(mIndexBuffer) || !glIsBuffer(mVertexBuffer)) { + OPENVDB_LOG_DEBUG_RUNTIME("request to render empty or uninitialized buffer"); + return; + } + + const bool usesColorBuffer = glIsBuffer(mColorBuffer); + const bool usesNormalBuffer = glIsBuffer(mNormalBuffer); + + glBindBuffer(GL_ARRAY_BUFFER, mVertexBuffer); + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(3, GL_FLOAT, 0, nullptr); + + if (usesColorBuffer) { + glBindBuffer(GL_ARRAY_BUFFER, mColorBuffer); + glEnableClientState(GL_COLOR_ARRAY); + glColorPointer(3, GL_FLOAT, 0, nullptr); + } + + if (usesNormalBuffer) { + glEnableClientState(GL_NORMAL_ARRAY); + glBindBuffer(GL_ARRAY_BUFFER, mNormalBuffer); + glNormalPointer(GL_FLOAT, 0, nullptr); + } + + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer); + glDrawElements(mPrimType, mPrimNum, GL_UNSIGNED_INT, nullptr); + + // disable client-side capabilities + if (usesColorBuffer) glDisableClientState(GL_COLOR_ARRAY); + if (usesNormalBuffer) glDisableClientState(GL_NORMAL_ARRAY); + + // release vbo's + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); +} + +void +BufferObject::genIndexBuffer(const std::vector& v, GLenum primType) +{ + // clear old buffer + if (glIsBuffer(mIndexBuffer) == GL_TRUE) glDeleteBuffers(1, &mIndexBuffer); + + // gen new buffer + glGenBuffers(1, &mIndexBuffer); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer); + if (glIsBuffer(mIndexBuffer) == GL_FALSE) throw "Error: Unable to create index buffer"; + + // upload data + glBufferData(GL_ELEMENT_ARRAY_BUFFER, + sizeof(GLuint) * v.size(), &v[0], GL_STATIC_DRAW); // upload data + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to upload index buffer data"; + + // release buffer + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + + mPrimNum = GLsizei(v.size()); + mPrimType = primType; +} + +void +BufferObject::genVertexBuffer(const std::vector& v) +{ + if (glIsBuffer(mVertexBuffer) == GL_TRUE) glDeleteBuffers(1, &mVertexBuffer); + + glGenBuffers(1, &mVertexBuffer); + glBindBuffer(GL_ARRAY_BUFFER, mVertexBuffer); + if (glIsBuffer(mVertexBuffer) == GL_FALSE) throw "Error: Unable to create vertex buffer"; + + glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * v.size(), &v[0], GL_STATIC_DRAW); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to upload vertex buffer data"; + + glBindBuffer(GL_ARRAY_BUFFER, 0); +} + +void +BufferObject::genNormalBuffer(const std::vector& v) +{ + if (glIsBuffer(mNormalBuffer) == GL_TRUE) glDeleteBuffers(1, &mNormalBuffer); + + glGenBuffers(1, &mNormalBuffer); + glBindBuffer(GL_ARRAY_BUFFER, mNormalBuffer); + if (glIsBuffer(mNormalBuffer) == GL_FALSE) throw "Error: Unable to create normal buffer"; + + glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * v.size(), &v[0], GL_STATIC_DRAW); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to upload normal buffer data"; + + glBindBuffer(GL_ARRAY_BUFFER, 0); +} + +void +BufferObject::genColorBuffer(const std::vector& v) +{ + if (glIsBuffer(mColorBuffer) == GL_TRUE) glDeleteBuffers(1, &mColorBuffer); + + glGenBuffers(1, &mColorBuffer); + glBindBuffer(GL_ARRAY_BUFFER, mColorBuffer); + if (glIsBuffer(mColorBuffer) == GL_FALSE) throw "Error: Unable to create color buffer"; + + glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * v.size(), &v[0], GL_STATIC_DRAW); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to upload color buffer data"; + + glBindBuffer(GL_ARRAY_BUFFER, 0); +} + +void +BufferObject::clear() +{ + if (glIsBuffer(mIndexBuffer) == GL_TRUE) glDeleteBuffers(1, &mIndexBuffer); + if (glIsBuffer(mVertexBuffer) == GL_TRUE) glDeleteBuffers(1, &mVertexBuffer); + if (glIsBuffer(mColorBuffer) == GL_TRUE) glDeleteBuffers(1, &mColorBuffer); + if (glIsBuffer(mNormalBuffer) == GL_TRUE) glDeleteBuffers(1, &mNormalBuffer); + + mPrimType = GL_POINTS; + mPrimNum = 0; +} + + +//////////////////////////////////////// + + +ShaderProgram::ShaderProgram(): + mProgram(0), + mVertShader(0), + mFragShader(0) +{ +} + +ShaderProgram::~ShaderProgram() { clear(); } + +void +ShaderProgram::setVertShader(const std::string& s) +{ + mVertShader = glCreateShader(GL_VERTEX_SHADER); + if (glIsShader(mVertShader) == GL_FALSE) throw "Error: Unable to create shader program."; + + GLint length = GLint(s.length()); + const char *str = s.c_str(); + glShaderSource(mVertShader, 1, &str, &length); + + glCompileShader(mVertShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to compile vertex shader."; +} + +void +ShaderProgram::setFragShader(const std::string& s) +{ + mFragShader = glCreateShader(GL_FRAGMENT_SHADER); + if (glIsShader(mFragShader) == GL_FALSE) throw "Error: Unable to create shader program."; + + GLint length = GLint(s.length()); + const char *str = s.c_str(); + glShaderSource(mFragShader, 1, &str, &length); + + glCompileShader(mFragShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to compile fragment shader."; +} + +void +ShaderProgram::build() +{ + mProgram = glCreateProgram(); + if (glIsProgram(mProgram) == GL_FALSE) throw "Error: Unable to create shader program."; + + if (glIsShader(mVertShader) == GL_TRUE) glAttachShader(mProgram, mVertShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to attach vertex shader."; + + if (glIsShader(mFragShader) == GL_TRUE) glAttachShader(mProgram, mFragShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to attach fragment shader."; + + + glLinkProgram(mProgram); + + GLint linked = 0; + glGetProgramiv(mProgram, GL_LINK_STATUS, &linked); + + if (!linked) throw "Error: Unable to link shader program."; +} + +void +ShaderProgram::build(const std::vector& attributes) +{ + mProgram = glCreateProgram(); + if (glIsProgram(mProgram) == GL_FALSE) throw "Error: Unable to create shader program."; + + for (GLuint n = 0, N = GLuint(attributes.size()); n < N; ++n) { + glBindAttribLocation(mProgram, n, attributes[n]); + } + + if (glIsShader(mVertShader) == GL_TRUE) glAttachShader(mProgram, mVertShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to attach vertex shader."; + + if (glIsShader(mFragShader) == GL_TRUE) glAttachShader(mProgram, mFragShader); + if (GL_NO_ERROR != glGetError()) throw "Error: Unable to attach fragment shader."; + + glLinkProgram(mProgram); + + GLint linked; + glGetProgramiv(mProgram, GL_LINK_STATUS, &linked); + + if (!linked) throw "Error: Unable to link shader program."; +} + +void +ShaderProgram::startShading() const +{ + if (glIsProgram(mProgram) == GL_FALSE) { + throw "Error: called startShading() on uncompiled shader program."; + } + glUseProgram(mProgram); +} + +void +ShaderProgram::stopShading() const +{ + glUseProgram(0); +} + +void +ShaderProgram::clear() +{ + GLsizei numShaders = 0; + GLuint shaders[2] = { 0, 0 }; + + glGetAttachedShaders(mProgram, 2, &numShaders, shaders); + + // detach and remove shaders + for (GLsizei n = 0; n < numShaders; ++n) { + + glDetachShader(mProgram, shaders[n]); + + if (glIsShader(shaders[n]) == GL_TRUE) glDeleteShader(shaders[n]); + } + + // remove program + if (glIsProgram(mProgram)) glDeleteProgram(mProgram); +} + + +//////////////////////////////////////// + +// ViewportModule + +ViewportModule::ViewportModule(): + mAxisGnomonScale(1.5), + mGroundPlaneScale(8.0) +{ +} + + +void +ViewportModule::render() +{ + if (!mIsVisible) return; + + /// @todo use VBO's + + // Ground plane + glPushMatrix(); + glScalef(mGroundPlaneScale, mGroundPlaneScale, mGroundPlaneScale); + glColor3d(0.6, 0.6, 0.6); + + OPENVDB_NO_FP_EQUALITY_WARNING_BEGIN + + float step = 0.125; + for (float x = -1; x < 1.125; x+=step) { + + if (std::fabs(x) == 0.5 || std::fabs(x) == 0.0) { + glLineWidth(1.5); + } else { + glLineWidth(1.0); + } + + glBegin(GL_LINES); + glVertex3f(x, 0, 1); + glVertex3f(x, 0, -1); + glVertex3f(1, 0, x); + glVertex3f(-1, 0, x); + glEnd(); + } + + OPENVDB_NO_FP_EQUALITY_WARNING_END + + + glPopMatrix(); + + // Axis gnomon + GLfloat modelview[16]; + glGetFloatv(GL_MODELVIEW_MATRIX, &modelview[0]); + + // Stash current viewport settigs. + GLint viewport[4]; + glGetIntegerv(GL_VIEWPORT, &viewport[0]); + + GLint width = viewport[2] / 20; + GLint height = viewport[3] / 20; + glViewport(0, 0, width, height); + + + glPushMatrix(); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + + GLfloat campos[3] = { modelview[2], modelview[6], modelview[10] }; + GLfloat up[3] = { modelview[1], modelview[5], modelview[9] }; + + gluLookAt(campos[0], campos[1], campos[2], 0.0, 0.0, 0.0, up[0], up[1], up[2]); + + glScalef(mAxisGnomonScale, mAxisGnomonScale, mAxisGnomonScale); + + glLineWidth(1.0); + + glBegin(GL_LINES); + glColor3f(1.0f, 0.0f, 0.0f); + glVertex3f(0, 0, 0); + glVertex3f(1, 0, 0); + + glColor3f(0.0f, 1.0f, 0.0f ); + glVertex3f(0, 0, 0); + glVertex3f(0, 1, 0); + + glColor3f(0.0f, 0.0f, 1.0f); + glVertex3f(0, 0, 0); + glVertex3f(0, 0, 1); + glEnd(); + + glLineWidth(1.0); + + // reset viewport + glPopMatrix(); + glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); + +} + + +//////////////////////////////////////// + + +class TreeTopologyOp +{ +public: + TreeTopologyOp(BufferObject& buffer) : mBuffer(&buffer) {} + + template + void operator()(typename GridType::ConstPtr grid) + { + using openvdb::Index64; + + Index64 nodeCount = grid->tree().leafCount() + grid->tree().nonLeafCount(); + const Index64 N = nodeCount * 8 * 3; + + std::vector points(N); + std::vector colors(N); + std::vector indices(N); + + + openvdb::Vec3d ptn; + openvdb::Vec3s color; + openvdb::CoordBBox bbox; + Index64 pOffset = 0, iOffset = 0, cOffset = 0, idx = 0; + + for (typename GridType::TreeType::NodeCIter iter = grid->tree().cbeginNode(); iter; ++iter) + { + iter.getBoundingBox(bbox); + + // Nodes are rendered as cell-centered + const openvdb::Vec3d min(bbox.min().x()-0.5, bbox.min().y()-0.5, bbox.min().z()-0.5); + const openvdb::Vec3d max(bbox.max().x()+0.5, bbox.max().y()+0.5, bbox.max().z()+0.5); + + // corner 1 + ptn = grid->indexToWorld(min); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 2 + ptn = openvdb::Vec3d(min.x(), min.y(), max.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 3 + ptn = openvdb::Vec3d(max.x(), min.y(), max.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 4 + ptn = openvdb::Vec3d(max.x(), min.y(), min.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 5 + ptn = openvdb::Vec3d(min.x(), max.y(), min.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 6 + ptn = openvdb::Vec3d(min.x(), max.y(), max.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 7 + ptn = grid->indexToWorld(max); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + // corner 8 + ptn = openvdb::Vec3d(max.x(), max.y(), min.z()); + ptn = grid->indexToWorld(ptn); + points[pOffset++] = static_cast(ptn[0]); + points[pOffset++] = static_cast(ptn[1]); + points[pOffset++] = static_cast(ptn[2]); + + + // edge 1 + indices[iOffset++] = GLuint(idx); + indices[iOffset++] = GLuint(idx + 1); + // edge 2 + indices[iOffset++] = GLuint(idx + 1); + indices[iOffset++] = GLuint(idx + 2); + // edge 3 + indices[iOffset++] = GLuint(idx + 2); + indices[iOffset++] = GLuint(idx + 3); + // edge 4 + indices[iOffset++] = GLuint(idx + 3); + indices[iOffset++] = GLuint(idx); + // edge 5 + indices[iOffset++] = GLuint(idx + 4); + indices[iOffset++] = GLuint(idx + 5); + // edge 6 + indices[iOffset++] = GLuint(idx + 5); + indices[iOffset++] = GLuint(idx + 6); + // edge 7 + indices[iOffset++] = GLuint(idx + 6); + indices[iOffset++] = GLuint(idx + 7); + // edge 8 + indices[iOffset++] = GLuint(idx + 7); + indices[iOffset++] = GLuint(idx + 4); + // edge 9 + indices[iOffset++] = GLuint(idx); + indices[iOffset++] = GLuint(idx + 4); + // edge 10 + indices[iOffset++] = GLuint(idx + 1); + indices[iOffset++] = GLuint(idx + 5); + // edge 11 + indices[iOffset++] = GLuint(idx + 2); + indices[iOffset++] = GLuint(idx + 6); + // edge 12 + indices[iOffset++] = GLuint(idx + 3); + indices[iOffset++] = GLuint(idx + 7); + + // node vertex color + const int level = iter.getLevel(); + color = sNodeColors[(level == 0) ? 3 : (level == 1) ? 2 : 1]; + + for (Index64 n = 0; n < 8; ++n) { + colors[cOffset++] = color[0]; + colors[cOffset++] = color[1]; + colors[cOffset++] = color[2]; + } + + idx += 8; + } // end node iteration + + // gen buffers and upload data to GPU + mBuffer->genVertexBuffer(points); + mBuffer->genColorBuffer(colors); + mBuffer->genIndexBuffer(indices, GL_LINES); + } + +private: + BufferObject *mBuffer; + + static openvdb::Vec3s sNodeColors[]; +}; // TreeTopologyOp + + +openvdb::Vec3s TreeTopologyOp::sNodeColors[] = { + openvdb::Vec3s(0.045f, 0.045f, 0.045f), // root + openvdb::Vec3s(0.0432f, 0.33f, 0.0411023f), // first internal node level + openvdb::Vec3s(0.871f, 0.394f, 0.01916f), // intermediate internal node levels + openvdb::Vec3s(0.00608299f, 0.279541f, 0.625f) // leaf nodes +}; + + +//////////////////////////////////////// + +// Tree topology render module + +TreeTopologyModule::TreeTopologyModule(const openvdb::GridBase::ConstPtr& grid): + mGrid(grid), + mIsInitialized(false) +{ + mShader.setVertShader( + "#version 120\n" + "void main() {\n" + "gl_FrontColor = gl_Color;\n" + "gl_Position = ftransform();\n" + "gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n" + "}\n"); + + mShader.setFragShader( + "#version 120\n" + "void main() {\n" + "gl_FragColor = gl_Color;}\n"); + + mShader.build(); +} + + +void +TreeTopologyModule::init() +{ + mIsInitialized = true; + + // extract grid topology + TreeTopologyOp drawTopology(mBufferObject); + + if (!util::processTypedGrid(mGrid, drawTopology)) { + OPENVDB_LOG_INFO("Ignoring unrecognized grid type" + " during tree topology module initialization."); + } +} + + +void +TreeTopologyModule::render() +{ + if (!mIsVisible) return; + if (!mIsInitialized) init(); + + mShader.startShading(); + + mBufferObject.render(); + + mShader.stopShading(); +} + + +//////////////////////////////////////// + + +template +class PointGenerator +{ +public: + using LeafManagerType = openvdb::tree::LeafManager; + + PointGenerator( + std::vector& points, + std::vector& indices, + LeafManagerType& leafs, + std::vector& indexMap, + const openvdb::math::Transform& transform, + openvdb::Index64 voxelsPerLeaf = TreeType::LeafNodeType::NUM_VOXELS) + : mPoints(points) + , mIndices(indices) + , mLeafs(leafs) + , mIndexMap(indexMap) + , mTransform(transform) + , mVoxelsPerLeaf(voxelsPerLeaf) + { + } + + void runParallel() + { + tbb::parallel_for(mLeafs.getRange(), *this); + } + + + inline void operator()(const typename LeafManagerType::RangeType& range) const + { + using openvdb::Index64; + + using ValueOnCIter = typename TreeType::LeafNodeType::ValueOnCIter; + + openvdb::Vec3d pos; + size_t index = 0; + Index64 activeVoxels = 0; + + for (size_t n = range.begin(); n < range.end(); ++n) { + + index = mIndexMap[n]; + ValueOnCIter it = mLeafs.leaf(n).cbeginValueOn(); + + activeVoxels = mLeafs.leaf(n).onVoxelCount(); + + if (activeVoxels <= mVoxelsPerLeaf) { + + for ( ; it; ++it) { + pos = mTransform.indexToWorld(it.getCoord()); + insertPoint(pos, index); + ++index; + } + + } else if (1 == mVoxelsPerLeaf) { + + pos = mTransform.indexToWorld(it.getCoord()); + insertPoint(pos, index); + + } else { + + std::vector coords; + coords.reserve(static_cast(activeVoxels)); + for ( ; it; ++it) { coords.push_back(it.getCoord()); } + + pos = mTransform.indexToWorld(coords[0]); + insertPoint(pos, index); + ++index; + + pos = mTransform.indexToWorld(coords[static_cast(activeVoxels-1)]); + insertPoint(pos, index); + ++index; + + Index64 r = Index64(std::floor(double(mVoxelsPerLeaf) / double(activeVoxels))); + for (Index64 i = 1, I = mVoxelsPerLeaf - 2; i < I; ++i) { + pos = mTransform.indexToWorld(coords[static_cast(i * r)]); + insertPoint(pos, index); + ++index; + } + } + } + } + +private: + void insertPoint(const openvdb::Vec3d& pos, size_t index) const + { + mIndices[index] = GLuint(index); + const size_t element = index * 3; + mPoints[element ] = static_cast(pos[0]); + mPoints[element + 1] = static_cast(pos[1]); + mPoints[element + 2] = static_cast(pos[2]); + } + + std::vector& mPoints; + std::vector& mIndices; + LeafManagerType& mLeafs; + std::vector& mIndexMap; + const openvdb::math::Transform& mTransform; + const openvdb::Index64 mVoxelsPerLeaf; +}; // PointGenerator + + +template +class NormalGenerator +{ +public: + using AccessorType = typename GridType::ConstAccessor; + using Grad = openvdb::math::ISGradient; + + NormalGenerator(const AccessorType& acc): mAccessor(acc) {} + + NormalGenerator(const NormalGenerator&) = delete; + NormalGenerator& operator=(const NormalGenerator&) = delete; + + void operator()(const openvdb::Coord& ijk, openvdb::Vec3d& normal) + { + openvdb::Vec3d v{Grad::result(mAccessor, ijk)}; + const double length = v.length(); + if (length > 1.0e-7) { + v *= 1.0 / length; + normal = v; + } + } + +private: + const AccessorType& mAccessor; +}; // class NormalGenerator + +// Specialization for PointDataGrids, for which normals are not generated +template<> +class NormalGenerator +{ +public: + NormalGenerator(const openvdb::points::PointDataGrid::ConstAccessor&) {} + NormalGenerator(const NormalGenerator&) = delete; + NormalGenerator& operator=(const NormalGenerator&) = delete; + void operator()(const openvdb::Coord&, openvdb::Vec3d&) {} +}; + + +template +class PointAttributeGenerator +{ +public: + using ValueType = typename GridType::ValueType; + + PointAttributeGenerator( + std::vector& points, + std::vector& colors, + const GridType& grid, + ValueType minValue, + ValueType maxValue, + openvdb::Vec3s (&colorMap)[4], + bool isLevelSet = false) + : mPoints(points) + , mColors(colors) + , mNormals(nullptr) + , mGrid(grid) + , mAccessor(grid.tree()) + , mMinValue(minValue) + , mMaxValue(maxValue) + , mColorMap(colorMap) + , mIsLevelSet(isLevelSet) + , mZeroValue(openvdb::zeroVal()) + { + init(); + } + + PointAttributeGenerator( + std::vector& points, + std::vector& colors, + std::vector& normals, + const GridType& grid, + ValueType minValue, + ValueType maxValue, + openvdb::Vec3s (&colorMap)[4], + bool isLevelSet = false) + : mPoints(points) + , mColors(colors) + , mNormals(&normals) + , mGrid(grid) + , mAccessor(grid.tree()) + , mMinValue(minValue) + , mMaxValue(maxValue) + , mColorMap(colorMap) + , mIsLevelSet(isLevelSet) + , mZeroValue(openvdb::zeroVal()) + { + init(); + } + + void runParallel() + { + tbb::parallel_for(tbb::blocked_range(0, (mPoints.size() / 3)), *this); + } + + inline void operator()(const tbb::blocked_range& range) const + { + openvdb::Coord ijk; + openvdb::Vec3d pos, normal(0.0, -1.0, 0.0); + openvdb::Vec3s color(0.9f, 0.3f, 0.3f); + float w = 0.0; + NormalGenerator computeNormal{mAccessor}; + + size_t e1, e2, e3, voxelNum = 0; + for (size_t n = range.begin(); n < range.end(); ++n) { + e1 = 3 * n; + e2 = e1 + 1; + e3 = e2 + 1; + + pos[0] = mPoints[e1]; + pos[1] = mPoints[e2]; + pos[2] = mPoints[e3]; + + pos = mGrid.worldToIndex(pos); + ijk[0] = int(pos[0]); + ijk[1] = int(pos[1]); + ijk[2] = int(pos[2]); + + const ValueType& value = mAccessor.getValue(ijk); + + if (value < mZeroValue) { // is negative + if (mIsLevelSet) { + color = mColorMap[1]; + } else { + w = (float(value) - mOffset[1]) * mScale[1]; + color = openvdb::Vec3s(w * mColorMap[0] + (1.0 - w) * mColorMap[1]); + } + } else { + if (mIsLevelSet) { + color = mColorMap[2]; + } else { + w = (float(value) - mOffset[0]) * mScale[0]; + color = openvdb::Vec3s(w * mColorMap[2] + (1.0 - w) * mColorMap[3]); + } + } + + mColors[e1] = color[0]; + mColors[e2] = color[1]; + mColors[e3] = color[2]; + + if (mNormals) { + if ((voxelNum % 2) == 0) { computeNormal(ijk, normal); } + ++voxelNum; + (*mNormals)[e1] = static_cast(normal[0]); + (*mNormals)[e2] = static_cast(normal[1]); + (*mNormals)[e3] = static_cast(normal[2]); + } + } + } + +private: + + void init() + { + mOffset[0] = static_cast(std::min(mZeroValue, mMinValue)); + mScale[0] = static_cast( + 1.0 / (std::abs(float(std::max(mZeroValue, mMaxValue)) - mOffset[0]))); + mOffset[1] = static_cast(std::min(mZeroValue, mMinValue)); + mScale[1] = static_cast( + 1.0 / (std::abs(float(std::max(mZeroValue, mMaxValue)) - mOffset[1]))); + } + + std::vector& mPoints; + std::vector& mColors; + std::vector* mNormals; + + const GridType& mGrid; + openvdb::tree::ValueAccessor mAccessor; + + ValueType mMinValue, mMaxValue; + openvdb::Vec3s (&mColorMap)[4]; + const bool mIsLevelSet; + + ValueType mZeroValue; + float mOffset[2], mScale[2]; +}; // PointAttributeGenerator + + +//////////////////////////////////////// + + +class ActiveScalarValuesOp +{ +public: + ActiveScalarValuesOp( + BufferObject& interiorBuffer, BufferObject& surfaceBuffer) + : mInteriorBuffer(&interiorBuffer) + , mSurfaceBuffer(&surfaceBuffer) + { + } + + template + void operator()(typename GridType::ConstPtr grid) + { + using openvdb::Index64; + + const Index64 maxVoxelPoints = 26000000; + + openvdb::Vec3s colorMap[4]; + colorMap[0] = openvdb::Vec3s(0.3f, 0.9f, 0.3f); // green + colorMap[1] = openvdb::Vec3s(0.9f, 0.3f, 0.3f); // red + colorMap[2] = openvdb::Vec3s(0.9f, 0.9f, 0.3f); // yellow + colorMap[3] = openvdb::Vec3s(0.3f, 0.3f, 0.9f); // blue + + ////////// + + using ValueType = typename GridType::ValueType; + using TreeType = typename GridType::TreeType; + using BoolTreeT = typename TreeType::template ValueConverter::Type; + + const TreeType& tree = grid->tree(); + const bool isLevelSetGrid = grid->getGridClass() == openvdb::GRID_LEVEL_SET; + + ValueType minValue, maxValue; + openvdb::tree::LeafManager leafs(tree); + + { + util::MinMaxVoxel minmax(leafs); + minmax.runParallel(); + minValue = minmax.minVoxel(); + maxValue = minmax.maxVoxel(); + } + + openvdb::Index64 voxelsPerLeaf = TreeType::LeafNodeType::NUM_VOXELS; + + if (!isLevelSetGrid) { + + typename BoolTreeT::Ptr interiorMask(new BoolTreeT(false)); + + { // Generate Interior Points + interiorMask->topologyUnion(tree); + interiorMask->voxelizeActiveTiles(); + + if (interiorMask->activeLeafVoxelCount() > maxVoxelPoints) { + voxelsPerLeaf = std::max(1, + (maxVoxelPoints / interiorMask->leafCount())); + } + + openvdb::tools::erodeVoxels(*interiorMask, 2); + + openvdb::tree::LeafManager maskleafs(*interiorMask); + std::vector indexMap(maskleafs.leafCount()); + size_t voxelCount = 0; + for (Index64 l = 0, L = maskleafs.leafCount(); l < L; ++l) { + indexMap[l] = voxelCount; + voxelCount += std::min(maskleafs.leaf(l).onVoxelCount(), voxelsPerLeaf); + } + + std::vector points(voxelCount * 3), colors(voxelCount * 3); + std::vector indices(voxelCount); + + PointGenerator pointGen( + points, indices, maskleafs, indexMap, grid->transform(), voxelsPerLeaf); + pointGen.runParallel(); + + + PointAttributeGenerator attributeGen( + points, colors, *grid, minValue, maxValue, colorMap); + attributeGen.runParallel(); + + + // gen buffers and upload data to GPU + mInteriorBuffer->genVertexBuffer(points); + mInteriorBuffer->genColorBuffer(colors); + mInteriorBuffer->genIndexBuffer(indices, GL_POINTS); + } + + { // Generate Surface Points + typename BoolTreeT::Ptr surfaceMask(new BoolTreeT(false)); + surfaceMask->topologyUnion(tree); + surfaceMask->voxelizeActiveTiles(); + + openvdb::tree::ValueAccessor interiorAcc(*interiorMask); + for (typename BoolTreeT::LeafIter leafIt = surfaceMask->beginLeaf(); + leafIt; ++leafIt) + { + const typename BoolTreeT::LeafNodeType* leaf = + interiorAcc.probeConstLeaf(leafIt->origin()); + if (leaf) leafIt->topologyDifference(*leaf, false); + } + openvdb::tools::pruneInactive(*surfaceMask); + + openvdb::tree::LeafManager maskleafs(*surfaceMask); + std::vector indexMap(maskleafs.leafCount()); + size_t voxelCount = 0; + for (Index64 l = 0, L = maskleafs.leafCount(); l < L; ++l) { + indexMap[l] = voxelCount; + voxelCount += std::min(maskleafs.leaf(l).onVoxelCount(), voxelsPerLeaf); + } + + std::vector + points(voxelCount * 3), + colors(voxelCount * 3), + normals(voxelCount * 3); + std::vector indices(voxelCount); + + PointGenerator pointGen( + points, indices, maskleafs, indexMap, grid->transform(), voxelsPerLeaf); + pointGen.runParallel(); + + PointAttributeGenerator attributeGen( + points, colors, normals, *grid, minValue, maxValue, colorMap); + attributeGen.runParallel(); + + mSurfaceBuffer->genVertexBuffer(points); + mSurfaceBuffer->genColorBuffer(colors); + mSurfaceBuffer->genNormalBuffer(normals); + mSurfaceBuffer->genIndexBuffer(indices, GL_POINTS); + } + + return; + } + + // Level set rendering + if (tree.activeLeafVoxelCount() > maxVoxelPoints) { + voxelsPerLeaf = std::max(1, (maxVoxelPoints / tree.leafCount())); + } + + std::vector indexMap(leafs.leafCount()); + size_t voxelCount = 0; + for (Index64 l = 0, L = leafs.leafCount(); l < L; ++l) { + indexMap[l] = voxelCount; + voxelCount += std::min(leafs.leaf(l).onVoxelCount(), voxelsPerLeaf); + } + + std::vector + points(voxelCount * 3), + colors(voxelCount * 3), + normals(voxelCount * 3); + std::vector indices(voxelCount); + + PointGenerator pointGen( + points, indices, leafs, indexMap, grid->transform(), voxelsPerLeaf); + pointGen.runParallel(); + + PointAttributeGenerator attributeGen( + points, colors, normals, *grid, minValue, maxValue, colorMap, isLevelSetGrid); + attributeGen.runParallel(); + + mSurfaceBuffer->genVertexBuffer(points); + mSurfaceBuffer->genColorBuffer(colors); + mSurfaceBuffer->genNormalBuffer(normals); + mSurfaceBuffer->genIndexBuffer(indices, GL_POINTS); + } + +private: + BufferObject *mInteriorBuffer; + BufferObject *mSurfaceBuffer; +}; // ActiveScalarValuesOp + + +class ActiveVectorValuesOp +{ +public: + ActiveVectorValuesOp(BufferObject& vectorBuffer) + : mVectorBuffer(&vectorBuffer) + { + } + + template + void operator()(typename GridType::ConstPtr grid) + { + using openvdb::Index64; + + using ValueType = typename GridType::ValueType; + using TreeType = typename GridType::TreeType; + using BoolTreeT = typename TreeType::template ValueConverter::Type; + + + const TreeType& tree = grid->tree(); + + double length = 0.0; + { + ValueType minVal, maxVal; + tree.evalMinMax(minVal, maxVal); + length = maxVal.length(); + } + + typename BoolTreeT::Ptr mask(new BoolTreeT(false)); + mask->topologyUnion(tree); + mask->voxelizeActiveTiles(); + + ///@todo thread and restructure. + + const Index64 voxelCount = mask->activeLeafVoxelCount(); + + const Index64 pointCount = voxelCount * 2; + std::vector points(pointCount*3), colors(pointCount*3); + std::vector indices(pointCount); + + openvdb::Coord ijk; + openvdb::Vec3d pos, color, normal; + openvdb::tree::LeafManager leafs(*mask); + + openvdb::tree::ValueAccessor acc(tree); + + Index64 idx = 0, pt = 0, cc = 0; + for (Index64 l = 0, L = leafs.leafCount(); l < L; ++l) { + typename BoolTreeT::LeafNodeType::ValueOnIter iter = leafs.leaf(l).beginValueOn(); + for (; iter; ++iter) { + ijk = iter.getCoord(); + ValueType vec = acc.getValue(ijk); + + pos = grid->indexToWorld(ijk); + + points[idx++] = static_cast(pos[0]); + points[idx++] = static_cast(pos[1]); + points[idx++] = static_cast(pos[2]); + + indices[pt] = GLuint(pt); + ++pt; + indices[pt] = GLuint(pt); + + ++pt; + double w = vec.length() / length; + vec.normalize(); + pos += grid->voxelSize()[0] * 0.9 * vec; + + points[idx++] = static_cast(pos[0]); + points[idx++] = static_cast(pos[1]); + points[idx++] = static_cast(pos[2]); + + + color = w * openvdb::Vec3d(0.9, 0.3, 0.3) + + (1.0 - w) * openvdb::Vec3d(0.3, 0.3, 0.9); + + colors[cc++] = static_cast(color[0] * 0.3); + colors[cc++] = static_cast(color[1] * 0.3); + colors[cc++] = static_cast(color[2] * 0.3); + + colors[cc++] = static_cast(color[0]); + colors[cc++] = static_cast(color[1]); + colors[cc++] = static_cast(color[2]); + } + } + + mVectorBuffer->genVertexBuffer(points); + mVectorBuffer->genColorBuffer(colors); + mVectorBuffer->genIndexBuffer(indices, GL_LINES); + } + +private: + BufferObject *mVectorBuffer; + +}; // ActiveVectorValuesOp + + +class PointDataOp +{ +public: + using GLfloatVec = std::vector; + using GLuintVec = std::vector; + +private: + struct VectorAttributeWrapper + { + using ValueType = openvdb::Vec3f; + + struct Handle + { + explicit Handle(VectorAttributeWrapper& attribute): + mValues(attribute.mValues), mIndices(attribute.mIndices) {} + + void set(openvdb::Index offset, openvdb::Index/*unused*/, const ValueType& value) + { + if (mIndices) (*mIndices)[offset] = static_cast(offset); + offset *= 3; + for (int i = 0; i < 3; ++i, ++offset) { mValues[offset] = value[i]; } + } + private: + GLfloatVec& mValues; + GLuintVec* mIndices; + }; // struct Handle + + explicit VectorAttributeWrapper(GLfloatVec& values, GLuintVec* indices = nullptr): + mValues(values), mIndices(indices) {} + + void expand() {} + void compact() {} + private: + GLfloatVec& mValues; + GLuintVec* mIndices; + }; // struct VectorAttributeWrapper + +public: + explicit PointDataOp(BufferObject& buffer) : mBuffer(&buffer) {} + + template + void operator()(typename GridType::ConstPtr grid) + { + const typename GridType::TreeType& tree = grid->tree(); + + // obtain cumulative point offsets and total points + std::vector pointOffsets; + const openvdb::Index64 total = openvdb::points::pointOffsets(pointOffsets, tree); + + // @todo use glDrawArrays with GL_POINTS to avoid generating indices + GLfloatVec values(total * 3); + GLuintVec indices(total); + + VectorAttributeWrapper positionWrapper{values, &indices}; + openvdb::points::convertPointDataGridPosition(positionWrapper, *grid, pointOffsets, 0); + + // gen buffers and upload data to GPU + mBuffer->genVertexBuffer(values); + mBuffer->genIndexBuffer(indices, GL_POINTS); + + const auto leafIter = tree.cbeginLeaf(); + if (!leafIter) return; + + const size_t colorIdx = leafIter->attributeSet().find("Cd"); + if (colorIdx == openvdb::points::AttributeSet::INVALID_POS) return; + + const auto& colorArray = leafIter->constAttributeArray(colorIdx); + if (colorArray.template hasValueType()) { + VectorAttributeWrapper colorWrapper{values}; + openvdb::points::convertPointDataGridAttribute(colorWrapper, tree, pointOffsets, + /*startOffset=*/0, static_cast(colorIdx)); + + // gen color buffer + mBuffer->genColorBuffer(values); + } + } + +private: + BufferObject* mBuffer; +}; // PointDataOp + + +//////////////////////////////////////// + +// Active value render module + +VoxelModule::VoxelModule(const openvdb::GridBase::ConstPtr& grid): + mGrid(grid), + mIsInitialized(false) +{ + mFlatShader.setVertShader( + "#version 120\n" + "void main() {\n" + "gl_FrontColor = gl_Color;\n" + "gl_Position = ftransform();\n" + "gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n" + "}\n"); + + mFlatShader.setFragShader( + "#version 120\n" + "void main() {\n" + "gl_FragColor = gl_Color;}\n"); + + mFlatShader.build(); + + mSurfaceShader.setVertShader( + "#version 120\n" + "varying vec3 normal;\n" + "void main() {\n" + "gl_FrontColor = gl_Color;\n" + "normal = normalize(gl_NormalMatrix * gl_Normal);\n" + "gl_Position = ftransform();\n" + "gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n" + "}\n"); + + + mSurfaceShader.setFragShader( + "#version 120\n" + "varying vec3 normal;\n" + "void main() {\n" + "vec3 normalized_normal = normalize(normal);\n" + "float w = 0.5 * (1.0 + dot(normalized_normal, vec3(0.0, 1.0, 0.0)));\n" + "vec4 diffuseColor = w * gl_Color + (1.0 - w) * (gl_Color * 0.3);\n" + "gl_FragColor = diffuseColor;\n" + "}\n"); + + mSurfaceShader.build(); +} + + +void +VoxelModule::init() +{ + mIsInitialized = true; + + if (mGrid->isType()) { + mSurfaceBuffer.clear(); + PointDataOp drawPoints(mInteriorBuffer); + util::doProcessTypedGrid(mGrid, drawPoints); + } else { + ActiveScalarValuesOp drawScalars(mInteriorBuffer, mSurfaceBuffer); + if (!util::processTypedScalarOrPointDataGrid(mGrid, drawScalars)) { + ActiveVectorValuesOp drawVectors(mVectorBuffer); + if (!util::processTypedVectorGrid(mGrid, drawVectors)) { + OPENVDB_LOG_INFO("Ignoring unrecognized grid type " << mGrid->type() + << " during active value module initialization."); + } + } + } +} + + +void +VoxelModule::render() +{ + if (!mIsVisible) return; + if (!mIsInitialized) init(); + + mFlatShader.startShading(); + mInteriorBuffer.render(); + mVectorBuffer.render(); + mFlatShader.stopShading(); + + mSurfaceShader.startShading(); + mSurfaceBuffer.render(); + mSurfaceShader.stopShading(); +} + + +//////////////////////////////////////// + + +class MeshOp +{ +public: + MeshOp(BufferObject& buffer) : mBuffer(&buffer) {} + + template + void operator()(typename GridType::ConstPtr grid) + { + using openvdb::Index64; + + openvdb::tools::VolumeToMesh mesher( + grid->getGridClass() == openvdb::GRID_LEVEL_SET ? 0.0 : 0.01); + mesher(*grid); + + // Copy points and generate point normals. + std::vector points(mesher.pointListSize() * 3); + std::vector normals(mesher.pointListSize() * 3); + + openvdb::tree::ValueAccessor acc(grid->tree()); + openvdb::math::GenericMap map(grid->transform()); + openvdb::Coord ijk; + + for (Index64 n = 0, i = 0, N = mesher.pointListSize(); n < N; ++n) { + const openvdb::Vec3s& p = mesher.pointList()[n]; + points[i++] = p[0]; + points[i++] = p[1]; + points[i++] = p[2]; + } + + // Copy primitives + openvdb::tools::PolygonPoolList& polygonPoolList = mesher.polygonPoolList(); + Index64 numQuads = 0; + for (Index64 n = 0, N = mesher.polygonPoolListSize(); n < N; ++n) { + numQuads += polygonPoolList[n].numQuads(); + } + + std::vector indices; + indices.reserve(numQuads * 4); + openvdb::Vec3d normal, e1, e2; + + for (Index64 n = 0, N = mesher.polygonPoolListSize(); n < N; ++n) { + const openvdb::tools::PolygonPool& polygons = polygonPoolList[n]; + for (Index64 i = 0, I = polygons.numQuads(); i < I; ++i) { + const openvdb::Vec4I& quad = polygons.quad(i); + indices.push_back(quad[0]); + indices.push_back(quad[1]); + indices.push_back(quad[2]); + indices.push_back(quad[3]); + + e1 = mesher.pointList()[quad[1]]; + e1 -= mesher.pointList()[quad[0]]; + e2 = mesher.pointList()[quad[2]]; + e2 -= mesher.pointList()[quad[1]]; + normal = e1.cross(e2); + + const double length = normal.length(); + if (length > 1.0e-7) normal *= (1.0 / length); + + for (int v = 0; v < 4; ++v) { + normals[quad[v]*3] = static_cast(-normal[0]); + normals[quad[v]*3+1] = static_cast(-normal[1]); + normals[quad[v]*3+2] = static_cast(-normal[2]); + } + } + } + + // Construct and transfer GPU buffers. + mBuffer->genVertexBuffer(points); + mBuffer->genNormalBuffer(normals); + mBuffer->genIndexBuffer(indices, GL_QUADS); + } + +private: + BufferObject *mBuffer; + + static openvdb::Vec3s sNodeColors[]; + +}; // MeshOp + + +//////////////////////////////////////// + +// Meshing module + +MeshModule::MeshModule(const openvdb::GridBase::ConstPtr& grid): + mGrid(grid), + mIsInitialized(false) +{ + mShader.setVertShader( + "#version 120\n" + "varying vec3 normal;\n" + "void main() {\n" + "normal = normalize(gl_NormalMatrix * gl_Normal);\n" + "gl_Position = ftransform();\n" + "gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n" + "}\n"); + + mShader.setFragShader( + "#version 120\n" + "varying vec3 normal;\n" + "const vec4 skyColor = vec4(0.9, 0.9, 1.0, 1.0);\n" + "const vec4 groundColor = vec4(0.3, 0.3, 0.2, 1.0);\n" + "void main() {\n" + "vec3 normalized_normal = normalize(normal);\n" + "float w = 0.5 * (1.0 + dot(normalized_normal, vec3(0.0, 1.0, 0.0)));\n" + "vec4 diffuseColor = w * skyColor + (1.0 - w) * groundColor;\n" + "gl_FragColor = diffuseColor;\n" + "}\n"); + + mShader.build(); +} + + +void +MeshModule::init() +{ + mIsInitialized = true; + + MeshOp drawMesh(mBufferObject); + + if (!util::processTypedScalarGrid(mGrid, drawMesh)) { + OPENVDB_LOG_INFO( + "Ignoring non-scalar grid type during mesh module initialization."); + } +} + + +void +MeshModule::render() +{ + if (!mIsVisible) return; + if (!mIsInitialized) init(); + + mShader.startShading(); + + mBufferObject.render(); + + mShader.stopShading(); +} + +} // namespace openvdb_viewer diff --git a/openvdb/viewer/RenderModules.h b/openvdb/viewer/RenderModules.h new file mode 100644 index 00000000..0f2a3ce0 --- /dev/null +++ b/openvdb/viewer/RenderModules.h @@ -0,0 +1,182 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_VIEWER_RENDERMODULES_HAS_BEEN_INCLUDED +#define OPENVDB_VIEWER_RENDERMODULES_HAS_BEEN_INCLUDED + +#include +#include +#include +#include +#include +#include +#include +#include + +#if defined(__APPLE__) || defined(MACOSX) +#include +#include +#else +#include +#include +#endif + + +namespace openvdb_viewer { + +// OpenGL helper objects + +class BufferObject +{ +public: + BufferObject(); + ~BufferObject(); + + void render() const; + + /// @note accepted @c primType: GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, + /// GL_LINES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_TRIANGLES, + /// GL_QUAD_STRIP, GL_QUADS and GL_POLYGON + void genIndexBuffer(const std::vector&, GLenum primType); + + void genVertexBuffer(const std::vector&); + void genNormalBuffer(const std::vector&); + void genColorBuffer(const std::vector&); + + void clear(); + +private: + GLuint mVertexBuffer, mNormalBuffer, mIndexBuffer, mColorBuffer; + GLenum mPrimType; + GLsizei mPrimNum; +}; + + +class ShaderProgram +{ +public: + ShaderProgram(); + ~ShaderProgram(); + + void setVertShader(const std::string&); + void setFragShader(const std::string&); + + void build(); + void build(const std::vector& attributes); + + void startShading() const; + void stopShading() const; + + void clear(); + +private: + GLuint mProgram, mVertShader, mFragShader; +}; + + +//////////////////////////////////////// + + +/// @brief interface class +class RenderModule +{ +public: + virtual ~RenderModule() {} + + virtual void render() = 0; + + bool visible() { return mIsVisible; } + void setVisible(bool b) { mIsVisible = b; } + +protected: + RenderModule(): mIsVisible(true) {} + + bool mIsVisible; +}; + + +//////////////////////////////////////// + + +/// @brief Basic render module, axis gnomon and ground plane. +class ViewportModule: public RenderModule +{ +public: + ViewportModule(); + ~ViewportModule() override = default; + + void render() override; + +private: + float mAxisGnomonScale, mGroundPlaneScale; +}; + + +//////////////////////////////////////// + + +/// @brief Tree topology render module +class TreeTopologyModule: public RenderModule +{ +public: + TreeTopologyModule(const openvdb::GridBase::ConstPtr&); + ~TreeTopologyModule() override = default; + + void render() override; + +private: + void init(); + + const openvdb::GridBase::ConstPtr& mGrid; + BufferObject mBufferObject; + bool mIsInitialized; + ShaderProgram mShader; +}; + + +//////////////////////////////////////// + + +/// @brief Module to render active voxels as points +class VoxelModule: public RenderModule +{ +public: + VoxelModule(const openvdb::GridBase::ConstPtr&); + ~VoxelModule() override = default; + + void render() override; + +private: + void init(); + + const openvdb::GridBase::ConstPtr& mGrid; + BufferObject mInteriorBuffer, mSurfaceBuffer, mVectorBuffer; + bool mIsInitialized; + ShaderProgram mFlatShader, mSurfaceShader; +}; + + +//////////////////////////////////////// + + +/// @brief Surfacing render module +class MeshModule: public RenderModule +{ +public: + MeshModule(const openvdb::GridBase::ConstPtr&); + ~MeshModule() override = default; + + void render() override; + +private: + void init(); + + const openvdb::GridBase::ConstPtr& mGrid; + BufferObject mBufferObject; + bool mIsInitialized; + ShaderProgram mShader; +}; + +} // namespace openvdb_viewer + +#endif // OPENVDB_VIEWER_RENDERMODULES_HAS_BEEN_INCLUDED diff --git a/openvdb/viewer/Viewer.cc b/openvdb/viewer/Viewer.cc new file mode 100644 index 00000000..21cd9fa8 --- /dev/null +++ b/openvdb/viewer/Viewer.cc @@ -0,0 +1,1219 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#include "Viewer.h" + +#include "Camera.h" +#include "ClipBox.h" +#include "Font.h" +#include "RenderModules.h" +#include // for formattedInt() +#include +#include +#include +#include // for OPENVDB_LIBRARY_MAJOR_VERSION, etc. +#include +#include +#include // for fabs() +#include // for std::setprecision() +#include +#include +#include +#include +#include +#include +#include + +#ifdef OPENVDB_USE_GLFW_3 +//#define GLFW_INCLUDE_GLU +#include +#else // if !defined(OPENVDB_USE_GLFW_3) +#if defined(__APPLE__) || defined(MACOSX) +#include +#include +#else +#include +#include +#endif +#include +#endif // !defined(OPENVDB_USE_GLFW_3) + + +namespace openvdb_viewer { + +class ViewerImpl +{ +public: + using CameraPtr = std::shared_ptr; + using ClipBoxPtr = std::shared_ptr; + using RenderModulePtr = std::shared_ptr; + + ViewerImpl(); + + void init(const std::string& progName); + + std::string getVersionString() const; + + bool isOpen() const; + bool open(int width = 900, int height = 800); + void view(const openvdb::GridCPtrVec&); + void handleEvents(); + void close(); + + void resize(int width, int height); + + void showPrevGrid(); + void showNextGrid(); + + bool needsDisplay(); + void setNeedsDisplay(); + + void toggleRenderModule(size_t n); + void toggleInfoText(); + + // Internal + void render(); + void interrupt(); + void setWindowTitle(double fps = 0.0); + void showNthGrid(size_t n); + void updateCutPlanes(int wheelPos); + void swapBuffers(); + + void keyCallback(int key, int action); + void mouseButtonCallback(int button, int action); + void mousePosCallback(int x, int y); + void mouseWheelCallback(int pos); + void windowSizeCallback(int width, int height); + void windowRefreshCallback(); + + static openvdb::BBoxd worldSpaceBBox(const openvdb::math::Transform&, + const openvdb::CoordBBox&); + static void sleep(double seconds); + +private: + bool mDidInit; + CameraPtr mCamera; + ClipBoxPtr mClipBox; + RenderModulePtr mViewportModule; + std::vector mRenderModules; + openvdb::GridCPtrVec mGrids; + size_t mGridIdx, mUpdates; + std::string mGridName, mProgName, mGridInfo, mTransformInfo, mTreeInfo; + int mWheelPos; + bool mShiftIsDown, mCtrlIsDown, mShowInfo; + bool mInterrupt; +#if GLFW_VERSION_MAJOR >= 3 + GLFWwindow* mWindow; +#endif +}; // class ViewerImpl + + +class ThreadManager +{ +public: + ThreadManager(); + + void view(const openvdb::GridCPtrVec& gridList); + void close(); + void resize(int width, int height); + +private: + void doView(); + static void* doViewTask(void* arg); + + tbb::atomic mRedisplay; + bool mClose, mHasThread; + boost::thread mThread; + openvdb::GridCPtrVec mGrids; +}; + + +//////////////////////////////////////// + + +namespace { + +ViewerImpl* sViewer = nullptr; +ThreadManager* sThreadMgr = nullptr; +tbb::mutex sLock; + + +#if GLFW_VERSION_MAJOR >= 3 +void +keyCB(GLFWwindow*, int key, int /*scancode*/, int action, int /*modifiers*/) +#else +void +keyCB(int key, int action) +#endif +{ + if (sViewer) sViewer->keyCallback(key, action); +} + + +#if GLFW_VERSION_MAJOR >= 3 +void +mouseButtonCB(GLFWwindow*, int button, int action, int /*modifiers*/) +#else +void +mouseButtonCB(int button, int action) +#endif +{ + if (sViewer) sViewer->mouseButtonCallback(button, action); +} + + +#if GLFW_VERSION_MAJOR >= 3 +void +mousePosCB(GLFWwindow*, double x, double y) +{ + if (sViewer) sViewer->mousePosCallback(int(x), int(y)); +} +#else +void +mousePosCB(int x, int y) +{ + if (sViewer) sViewer->mousePosCallback(x, y); +} +#endif + + +#if GLFW_VERSION_MAJOR >= 3 +void +mouseWheelCB(GLFWwindow*, double /*xoffset*/, double yoffset) +{ + if (sViewer) sViewer->mouseWheelCallback(int(yoffset)); +} +#else +void +mouseWheelCB(int pos) +{ + if (sViewer) sViewer->mouseWheelCallback(pos); +} +#endif + + +#if GLFW_VERSION_MAJOR >= 3 +void +windowSizeCB(GLFWwindow*, int width, int height) +#else +void +windowSizeCB(int width, int height) +#endif +{ + if (sViewer) sViewer->windowSizeCallback(width, height); +} + + +#if GLFW_VERSION_MAJOR >= 3 +void +windowRefreshCB(GLFWwindow*) +#else +void +windowRefreshCB() +#endif +{ + if (sViewer) sViewer->windowRefreshCallback(); +} + +} // unnamed namespace + + +//////////////////////////////////////// + + +Viewer +init(const std::string& progName, bool background) +{ + if (sViewer == nullptr) { + tbb::mutex::scoped_lock lock(sLock); + if (sViewer == nullptr) { + OPENVDB_START_THREADSAFE_STATIC_WRITE + sViewer = new ViewerImpl; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + } + } + sViewer->init(progName); + + if (background) { + if (sThreadMgr == nullptr) { + tbb::mutex::scoped_lock lock(sLock); + if (sThreadMgr == nullptr) { + OPENVDB_START_THREADSAFE_STATIC_WRITE + sThreadMgr = new ThreadManager; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + } + } + } else { + if (sThreadMgr != nullptr) { + tbb::mutex::scoped_lock lock(sLock); + delete sThreadMgr; + OPENVDB_START_THREADSAFE_STATIC_WRITE + sThreadMgr = nullptr; + OPENVDB_FINISH_THREADSAFE_STATIC_WRITE + } + } + + return Viewer(); +} + + +void +exit() +{ +#if GLFW_VERSION_MAJOR >= 3 + // Prior to GLFW 3, glfwTerminate() was called automatically from + // an atexit() function installed by glfwInit(), so this was not needed. + // But GLFW 3 does not register an atexit() function. + glfwTerminate(); +#endif +} + + +//////////////////////////////////////// + + +Viewer::Viewer() +{ + OPENVDB_LOG_DEBUG_RUNTIME("constructed Viewer from thread " << boost::this_thread::get_id()); +} + + +void +Viewer::open(int width, int height) +{ + if (sViewer) sViewer->open(width, height); +} + + +void +Viewer::view(const openvdb::GridCPtrVec& grids) +{ + if (sThreadMgr) { + sThreadMgr->view(grids); + } else if (sViewer) { + sViewer->view(grids); + } +} + + +void +Viewer::handleEvents() +{ + if (sViewer) sViewer->handleEvents(); +} + + +void +Viewer::close() +{ + if (sThreadMgr) sThreadMgr->close(); + else if (sViewer) sViewer->close(); +} + + +void +Viewer::resize(int width, int height) +{ + if (sViewer) sViewer->resize(width, height); +} + + +std::string +Viewer::getVersionString() const +{ + std::string version; + if (sViewer) version = sViewer->getVersionString(); + return version; +} + + +//////////////////////////////////////// + + +ThreadManager::ThreadManager() + : mClose(false) + , mHasThread(false) +{ + mRedisplay = false; +} + + +void +ThreadManager::view(const openvdb::GridCPtrVec& gridList) +{ + if (!sViewer) return; + + mGrids = gridList; + mClose = false; + mRedisplay = true; + + if (!mHasThread) { + mThread = boost::thread(doViewTask, this); + mHasThread = true; + } +} + + +void +ThreadManager::close() +{ + if (!sViewer) return; + + // Tell the viewer thread to exit. + mRedisplay = false; + mClose = true; + // Tell the viewer to terminate its event loop. + sViewer->interrupt(); + + if (mHasThread) { + mThread.join(); + mHasThread = false; + } + + // Tell the viewer to close its window. + sViewer->close(); +} + + +void +ThreadManager::doView() +{ + // This function runs in its own thread. + // The mClose and mRedisplay flags are set from the main thread. + while (!mClose) { + if (mRedisplay.compare_and_swap(/*set to*/false, /*if*/true)) { + if (sViewer) sViewer->view(mGrids); + } + sViewer->sleep(0.5/*sec*/); + } +} + + +//static +void* +ThreadManager::doViewTask(void* arg) +{ + if (ThreadManager* self = static_cast(arg)) { + self->doView(); + } + return nullptr; +} + + +//////////////////////////////////////// + + +ViewerImpl::ViewerImpl() + : mDidInit(false) + , mCamera(new Camera) + , mClipBox(new ClipBox) + , mGridIdx(0) + , mUpdates(0) + , mWheelPos(0) + , mShiftIsDown(false) + , mCtrlIsDown(false) + , mShowInfo(true) + , mInterrupt(false) +#if GLFW_VERSION_MAJOR >= 3 + , mWindow(nullptr) +#endif +{ +} + + +void +ViewerImpl::init(const std::string& progName) +{ + mProgName = progName; + + if (!mDidInit) { +#if GLFW_VERSION_MAJOR >= 3 + struct Local { + static void errorCB(int error, const char* descr) { + OPENVDB_LOG_ERROR("GLFW Error " << error << ": " << descr); + } + }; + glfwSetErrorCallback(Local::errorCB); +#endif + if (glfwInit() == GL_TRUE) { + OPENVDB_LOG_DEBUG_RUNTIME("initialized GLFW from thread " + << boost::this_thread::get_id()); + mDidInit = true; + } else { + OPENVDB_LOG_ERROR("GLFW initialization failed"); + } + } + mViewportModule.reset(new ViewportModule); +} + + +std::string +ViewerImpl::getVersionString() const +{ + std::ostringstream ostr; + + ostr << "OpenVDB: " << + openvdb::OPENVDB_LIBRARY_MAJOR_VERSION << "." << + openvdb::OPENVDB_LIBRARY_MINOR_VERSION << "." << + openvdb::OPENVDB_LIBRARY_PATCH_VERSION; + + int major, minor, rev; + glfwGetVersion(&major, &minor, &rev); + ostr << ", " << "GLFW: " << major << "." << minor << "." << rev; + + if (mDidInit) { + ostr << ", " << "OpenGL: "; +#if GLFW_VERSION_MAJOR >= 3 + std::shared_ptr wPtr; + GLFWwindow* w = mWindow; + if (!w) { + wPtr.reset(glfwCreateWindow(100, 100, "", nullptr, nullptr), &glfwDestroyWindow); + w = wPtr.get(); + } + if (w) { + ostr << glfwGetWindowAttrib(w, GLFW_CONTEXT_VERSION_MAJOR) << "." + << glfwGetWindowAttrib(w, GLFW_CONTEXT_VERSION_MINOR) << "." + << glfwGetWindowAttrib(w, GLFW_CONTEXT_REVISION); + } +#else + if (!glfwGetWindowParam(GLFW_OPENED)) { + if (glfwOpenWindow(100, 100, 8, 8, 8, 8, 24, 0, GLFW_WINDOW)) { + ostr << glGetString(GL_VERSION); + glfwCloseWindow(); + } + } else { + ostr << glGetString(GL_VERSION); + } +#endif + } + return ostr.str(); +} + + +#if GLFW_VERSION_MAJOR >= 3 +bool +ViewerImpl::open(int width, int height) +{ + if (mWindow == nullptr) { + glfwWindowHint(GLFW_RED_BITS, 8); + glfwWindowHint(GLFW_GREEN_BITS, 8); + glfwWindowHint(GLFW_BLUE_BITS, 8); + glfwWindowHint(GLFW_ALPHA_BITS, 8); + glfwWindowHint(GLFW_DEPTH_BITS, 32); + glfwWindowHint(GLFW_STENCIL_BITS, 0); + + mWindow = glfwCreateWindow( + width, height, mProgName.c_str(), /*monitor=*/nullptr, /*share=*/nullptr); + + OPENVDB_LOG_DEBUG_RUNTIME("created window " << std::hex << mWindow << std::dec + << " from thread " << boost::this_thread::get_id()); + + if (mWindow != nullptr) { + // Temporarily make the new window the current context, then create a font. + std::shared_ptr curWindow( + glfwGetCurrentContext(), glfwMakeContextCurrent); + glfwMakeContextCurrent(mWindow); + BitmapFont13::initialize(); + } + } + mCamera->setWindow(mWindow); + + if (mWindow != nullptr) { + glfwSetKeyCallback(mWindow, keyCB); + glfwSetMouseButtonCallback(mWindow, mouseButtonCB); + glfwSetCursorPosCallback(mWindow, mousePosCB); + glfwSetScrollCallback(mWindow, mouseWheelCB); + glfwSetWindowSizeCallback(mWindow, windowSizeCB); + glfwSetWindowRefreshCallback(mWindow, windowRefreshCB); + } + return (mWindow != nullptr); +} +#else // if GLFW_VERSION_MAJOR <= 2 +bool +ViewerImpl::open(int width, int height) +{ + if (!glfwGetWindowParam(GLFW_OPENED)) { + if (!glfwOpenWindow(width, height, + 8, 8, 8, 8, // # of R,G,B, & A bits + 32, 0, // # of depth & stencil buffer bits + GLFW_WINDOW)) // either GLFW_WINDOW or GLFW_FULLSCREEN + { + return false; + } + } + glfwSetWindowTitle(mProgName.c_str()); + + BitmapFont13::initialize(); + + glfwSetKeyCallback(keyCB); + glfwSetMouseButtonCallback(mouseButtonCB); + glfwSetMousePosCallback(mousePosCB); + glfwSetMouseWheelCallback(mouseWheelCB); + glfwSetWindowSizeCallback(windowSizeCB); + glfwSetWindowRefreshCallback(windowRefreshCB); + + return true; +} +#endif + + +bool +ViewerImpl::isOpen() const +{ +#if GLFW_VERSION_MAJOR >= 3 + return (mWindow != nullptr); +#else + return glfwGetWindowParam(GLFW_OPENED); +#endif +} + + +// Set a flag so as to break out of the event loop on the next iteration. +// (Useful only if the event loop is running in a separate thread.) +void +ViewerImpl::interrupt() +{ + mInterrupt = true; +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow) glfwSetWindowShouldClose(mWindow, true); +#endif +} + + +void +ViewerImpl::handleEvents() +{ +#if GLFW_VERSION_MAJOR >= 3 + glfwPollEvents(); +#endif +} + + +void +ViewerImpl::close() +{ +#if GLFW_VERSION_MAJOR >= 3 + OPENVDB_LOG_DEBUG_RUNTIME("about to close window " << std::hex << mWindow << std::dec + << " from thread " << boost::this_thread::get_id()); +#else + OPENVDB_LOG_DEBUG_RUNTIME("about to close window from thread " + << boost::this_thread::get_id()); +#endif + + mViewportModule.reset(); + mRenderModules.clear(); +#if GLFW_VERSION_MAJOR >= 3 + mCamera->setWindow(nullptr); + GLFWwindow* win = mWindow; + mWindow = nullptr; + glfwDestroyWindow(win); + OPENVDB_LOG_DEBUG_RUNTIME("destroyed window " << std::hex << win << std::dec + << " from thread " << boost::this_thread::get_id()); +#else + glfwCloseWindow(); +#endif +} + + +//////////////////////////////////////// + + +void +ViewerImpl::view(const openvdb::GridCPtrVec& gridList) +{ + if (!isOpen()) return; + + mGrids = gridList; + mGridIdx = size_t(-1); + mGridName.clear(); + + // Compute the combined bounding box of all the grids. + openvdb::BBoxd bbox(openvdb::Vec3d(0.0), openvdb::Vec3d(0.0)); + if (!gridList.empty()) { + bbox = worldSpaceBBox( + gridList[0]->transform(), gridList[0]->evalActiveVoxelBoundingBox()); + openvdb::Vec3d voxelSize = gridList[0]->voxelSize(); + + for (size_t n = 1; n < gridList.size(); ++n) { + bbox.expand(worldSpaceBBox(gridList[n]->transform(), + gridList[n]->evalActiveVoxelBoundingBox())); + + voxelSize = minComponent(voxelSize, gridList[n]->voxelSize()); + } + mClipBox->setStepSize(voxelSize); + } + mClipBox->setBBox(bbox); + +#if GLFW_VERSION_MAJOR >= 3 + // Prepare window for rendering. + glfwMakeContextCurrent(mWindow); +#endif + + { + // set up camera + openvdb::Vec3d extents = bbox.extents(); + double maxExtent = std::max(extents[0], std::max(extents[1], extents[2])); + mCamera->setTarget(bbox.getCenter(), maxExtent); + mCamera->lookAtTarget(); + mCamera->setSpeed(); + } + + swapBuffers(); + setNeedsDisplay(); + + + ////////// + + // Screen color + glClearColor(0.85f, 0.85f, 0.85f, 0.0f); + + glDepthFunc(GL_LESS); + glEnable(GL_DEPTH_TEST); + glShadeModel(GL_SMOOTH); + + glPointSize(4); + glLineWidth(2); + ////////// + + // construct render modules + showNthGrid(/*n=*/0); + + + // main loop + + size_t frame = 0; + double time = glfwGetTime(); + + glfwSwapInterval(1); + +#if GLFW_VERSION_MAJOR >= 3 + OPENVDB_LOG_DEBUG_RUNTIME("starting to render in window " << std::hex << mWindow << std::dec + << " from thread " << boost::this_thread::get_id()); +#else + OPENVDB_LOG_DEBUG_RUNTIME("starting to render from thread " << boost::this_thread::get_id()); +#endif + + mInterrupt = false; + for (bool stop = false; !stop; ) { + if (needsDisplay()) render(); + + // eval fps + ++frame; + double elapsed = glfwGetTime() - time; + if (elapsed > 1.0) { + time = glfwGetTime(); + setWindowTitle(/*fps=*/double(frame) / elapsed); + frame = 0; + } + + // Swap front and back buffers + swapBuffers(); + + sleep(0.01/*sec*/); + + // Exit if the Esc key is pressed or the window is closed. +#if GLFW_VERSION_MAJOR >= 3 + handleEvents(); + stop = (mInterrupt || glfwWindowShouldClose(mWindow)); +#else + stop = (mInterrupt || glfwGetKey(GLFW_KEY_ESC) || !glfwGetWindowParam(GLFW_OPENED)); +#endif + } + +#if GLFW_VERSION_MAJOR >= 3 + if (glfwGetCurrentContext() == mWindow) { ///< @todo not thread-safe + // Detach this viewer's GL context. + glfwMakeContextCurrent(nullptr); + OPENVDB_LOG_DEBUG_RUNTIME("detached window " << std::hex << mWindow << std::dec + << " from thread " << boost::this_thread::get_id()); + } +#endif + +#if GLFW_VERSION_MAJOR >= 3 + OPENVDB_LOG_DEBUG_RUNTIME("finished rendering in window " << std::hex << mWindow << std::dec + << " from thread " << boost::this_thread::get_id()); +#else + OPENVDB_LOG_DEBUG_RUNTIME("finished rendering from thread " << boost::this_thread::get_id()); +#endif +} + + +//////////////////////////////////////// + + +void +ViewerImpl::resize(int width, int height) +{ +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow) glfwSetWindowSize(mWindow, width, height); +#else + glfwSetWindowSize(width, height); +#endif +} + + +//////////////////////////////////////// + + +void +ViewerImpl::render() +{ +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow == nullptr) return; + + // Prepare window for rendering. + glfwMakeContextCurrent(mWindow); +#endif + + mCamera->aim(); + + // draw scene + mViewportModule->render(); // ground plane. + + mClipBox->render(); + mClipBox->enableClipping(); + + for (size_t n = 0, N = mRenderModules.size(); n < N; ++n) { + mRenderModules[n]->render(); + } + + mClipBox->disableClipping(); + + // Render text + + if (mShowInfo) { + BitmapFont13::enableFontRendering(); + + glColor3d(0.2, 0.2, 0.2); + + int width, height; +#if GLFW_VERSION_MAJOR >= 3 + glfwGetFramebufferSize(mWindow, &width, &height); +#else + glfwGetWindowSize(&width, &height); +#endif + + BitmapFont13::print(10, height - 13 - 10, mGridInfo); + BitmapFont13::print(10, height - 13 - 30, mTransformInfo); + BitmapFont13::print(10, height - 13 - 50, mTreeInfo); + + // Indicate via their hotkeys which render modules are enabled. + std::string keys = "123"; + for (auto n: {0, 1, 2}) { if (!mRenderModules[n]->visible()) keys[n] = ' '; } + BitmapFont13::print(width - 10 - 30, 10, keys); + glColor3d(0.75, 0.75, 0.75); + BitmapFont13::print(width - 10 - 30, 10, "123"); + + BitmapFont13::disableFontRendering(); + } +} + + +//////////////////////////////////////// + + +//static +void +ViewerImpl::sleep(double secs) +{ + secs = fabs(secs); + int isecs = int(secs); + boost::this_thread::sleep(boost::posix_time::seconds(isecs)); +} + + +//////////////////////////////////////// + + +//static +openvdb::BBoxd +ViewerImpl::worldSpaceBBox(const openvdb::math::Transform& xform, const openvdb::CoordBBox& bbox) +{ + openvdb::Vec3d pMin = openvdb::Vec3d(std::numeric_limits::max()); + openvdb::Vec3d pMax = -pMin; + + const openvdb::Coord& min = bbox.min(); + const openvdb::Coord& max = bbox.max(); + openvdb::Coord ijk; + + // corner 1 + openvdb::Vec3d ptn = xform.indexToWorld(min); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 2 + ijk[0] = min.x(); + ijk[1] = min.y(); + ijk[2] = max.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 3 + ijk[0] = max.x(); + ijk[1] = min.y(); + ijk[2] = max.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 4 + ijk[0] = max.x(); + ijk[1] = min.y(); + ijk[2] = min.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 5 + ijk[0] = min.x(); + ijk[1] = max.y(); + ijk[2] = min.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 6 + ijk[0] = min.x(); + ijk[1] = max.y(); + ijk[2] = max.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + + // corner 7 + ptn = xform.indexToWorld(max); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + // corner 8 + ijk[0] = max.x(); + ijk[1] = max.y(); + ijk[2] = min.z(); + ptn = xform.indexToWorld(ijk); + for (int i = 0; i < 3; ++i) { + if (ptn[i] < pMin[i]) pMin[i] = ptn[i]; + if (ptn[i] > pMax[i]) pMax[i] = ptn[i]; + } + + return openvdb::BBoxd(pMin, pMax); +} + + +//////////////////////////////////////// + + +void +ViewerImpl::updateCutPlanes(int wheelPos) +{ + double speed = std::abs(mWheelPos - wheelPos); + if (mWheelPos < wheelPos) mClipBox->update(speed); + else mClipBox->update(-speed); + setNeedsDisplay(); +} + + +//////////////////////////////////////// + + +void +ViewerImpl::swapBuffers() +{ +#if GLFW_VERSION_MAJOR >= 3 + glfwSwapBuffers(mWindow); +#else + glfwSwapBuffers(); +#endif +} + + +//////////////////////////////////////// + + +void +ViewerImpl::setWindowTitle(double fps) +{ + std::ostringstream ss; + ss << mProgName << ": " + << (mGridName.empty() ? std::string("OpenVDB") : mGridName) + << " (" << (mGridIdx + 1) << " of " << mGrids.size() << ") @ " + << std::setprecision(1) << std::fixed << fps << " fps"; +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow) glfwSetWindowTitle(mWindow, ss.str().c_str()); +#else + glfwSetWindowTitle(ss.str().c_str()); +#endif +} + + +//////////////////////////////////////// + + +void +ViewerImpl::showPrevGrid() +{ + if (const size_t numGrids = mGrids.size()) { + size_t idx = ((numGrids + mGridIdx) - 1) % numGrids; + showNthGrid(idx); + } +} + + +void +ViewerImpl::showNextGrid() +{ + if (const size_t numGrids = mGrids.size()) { + size_t idx = (mGridIdx + 1) % numGrids; + showNthGrid(idx); + } +} + + +void +ViewerImpl::showNthGrid(size_t n) +{ + if (mGrids.empty()) return; + n = n % mGrids.size(); + if (n == mGridIdx) return; + + mGridName = mGrids[n]->getName(); + mGridIdx = n; + + // save render settings + std::vector active(mRenderModules.size()); + for (size_t i = 0, I = active.size(); i < I; ++i) { + active[i] = mRenderModules[i]->visible(); + } + + mRenderModules.clear(); + mRenderModules.push_back(RenderModulePtr(new TreeTopologyModule(mGrids[n]))); + mRenderModules.push_back(RenderModulePtr(new MeshModule(mGrids[n]))); + mRenderModules.push_back(RenderModulePtr(new VoxelModule(mGrids[n]))); + + if (active.empty()) { + for (size_t i = 1, I = mRenderModules.size(); i < I; ++i) { + mRenderModules[i]->setVisible(false); + } + } else { + for (size_t i = 0, I = active.size(); i < I; ++i) { + mRenderModules[i]->setVisible(active[i]); + } + } + + // Collect info + { + std::ostringstream ostrm; + std::string s = mGrids[n]->getName(); + const openvdb::GridClass cls = mGrids[n]->getGridClass(); + if (!s.empty()) ostrm << s << " / "; + ostrm << mGrids[n]->valueType() << " / "; + if (cls == openvdb::GRID_UNKNOWN) ostrm << " class unknown"; + else ostrm << " " << openvdb::GridBase::gridClassToString(cls); + mGridInfo = ostrm.str(); + } + { + openvdb::Coord dim = mGrids[n]->evalActiveVoxelDim(); + std::ostringstream ostrm; + ostrm << dim[0] << " x " << dim[1] << " x " << dim[2] + << " / voxel size " << std::setprecision(4) << mGrids[n]->voxelSize()[0] + << " (" << mGrids[n]->transform().mapType() << ")"; + mTransformInfo = ostrm.str(); + } + { + std::ostringstream ostrm; + const openvdb::Index64 count = mGrids[n]->activeVoxelCount(); + ostrm << openvdb::util::formattedInt(count) + << " active voxel" << (count == 1 ? "" : "s"); + mTreeInfo = ostrm.str(); + } + { + if (mGrids[n]->isType()) { + const openvdb::points::PointDataGrid::ConstPtr points = + openvdb::gridConstPtrCast(mGrids[n]); + const openvdb::Index64 count = openvdb::points::pointCount(points->tree()); + std::ostringstream ostrm; + ostrm << " / " << openvdb::util::formattedInt(count) + << " point" << (count == 1 ? "" : "s"); + mTreeInfo.append(ostrm.str()); + } + } + + setWindowTitle(); +} + + +//////////////////////////////////////// + + +void +ViewerImpl::keyCallback(int key, int action) +{ + mCamera->keyCallback(key, action); + +#if GLFW_VERSION_MAJOR >= 3 + if (mWindow == nullptr) return; + const bool keyPress = (glfwGetKey(mWindow, key) == GLFW_PRESS); + /// @todo Should use "modifiers" argument to keyCB(). + mShiftIsDown = glfwGetKey(mWindow, GLFW_KEY_LEFT_SHIFT); + mCtrlIsDown = glfwGetKey(mWindow, GLFW_KEY_LEFT_CONTROL); +#else + const bool keyPress = glfwGetKey(key) == GLFW_PRESS; + mShiftIsDown = glfwGetKey(GLFW_KEY_LSHIFT); + mCtrlIsDown = glfwGetKey(GLFW_KEY_LCTRL); +#endif + + if (keyPress) { + switch (key) { + case '1': case GLFW_KEY_KP_1: + toggleRenderModule(0); + break; + case '2': case GLFW_KEY_KP_2: + toggleRenderModule(1); + break; + case '3': case GLFW_KEY_KP_3: + toggleRenderModule(2); + break; + case 'c': case 'C': + mClipBox->reset(); + break; + case 'h': case 'H': // center home + mCamera->lookAt(openvdb::Vec3d(0.0), 10.0); + break; + case 'g': case 'G': // center geometry + mCamera->lookAtTarget(); + break; + case 'i': case 'I': + toggleInfoText(); + break; + case GLFW_KEY_LEFT: + showPrevGrid(); + break; + case GLFW_KEY_RIGHT: + showNextGrid(); + break; +#if GLFW_VERSION_MAJOR >= 3 + case GLFW_KEY_ESCAPE: + glfwSetWindowShouldClose(mWindow, true); + break; +#endif + } + } + + switch (key) { + case 'x': case 'X': + mClipBox->activateXPlanes() = keyPress; + break; + case 'y': case 'Y': + mClipBox->activateYPlanes() = keyPress; + break; + case 'z': case 'Z': + mClipBox->activateZPlanes() = keyPress; + break; + } + + mClipBox->shiftIsDown() = mShiftIsDown; + mClipBox->ctrlIsDown() = mCtrlIsDown; + + setNeedsDisplay(); +} + + +void +ViewerImpl::mouseButtonCallback(int button, int action) +{ + mCamera->mouseButtonCallback(button, action); + mClipBox->mouseButtonCallback(button, action); + if (mCamera->needsDisplay()) setNeedsDisplay(); +} + + +void +ViewerImpl::mousePosCallback(int x, int y) +{ + bool handled = mClipBox->mousePosCallback(x, y); + if (!handled) mCamera->mousePosCallback(x, y); + if (mCamera->needsDisplay()) setNeedsDisplay(); +} + + +void +ViewerImpl::mouseWheelCallback(int pos) +{ +#if GLFW_VERSION_MAJOR >= 3 + pos += mWheelPos; +#endif + if (mClipBox->isActive()) { + updateCutPlanes(pos); + } else { + mCamera->mouseWheelCallback(pos, mWheelPos); + if (mCamera->needsDisplay()) setNeedsDisplay(); + } + + mWheelPos = pos; +} + + +void +ViewerImpl::windowSizeCallback(int, int) +{ + setNeedsDisplay(); +} + + +void +ViewerImpl::windowRefreshCallback() +{ + setNeedsDisplay(); +} + + +//////////////////////////////////////// + + +bool +ViewerImpl::needsDisplay() +{ + if (mUpdates < 2) { + mUpdates += 1; + return true; + } + return false; +} + + +void +ViewerImpl::setNeedsDisplay() +{ + mUpdates = 0; +} + + +void +ViewerImpl::toggleRenderModule(size_t n) +{ + mRenderModules[n]->setVisible(!mRenderModules[n]->visible()); +} + + +void +ViewerImpl::toggleInfoText() +{ + mShowInfo = !mShowInfo; +} + +} // namespace openvdb_viewer diff --git a/openvdb/viewer/Viewer.h b/openvdb/viewer/Viewer.h new file mode 100644 index 00000000..4b45be4e --- /dev/null +++ b/openvdb/viewer/Viewer.h @@ -0,0 +1,62 @@ +// Copyright Contributors to the OpenVDB Project +// SPDX-License-Identifier: MPL-2.0 + +#ifndef OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED +#define OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED + +#include +#include + + +namespace openvdb_viewer { + +class Viewer; + +enum { DEFAULT_WIDTH = 900, DEFAULT_HEIGHT = 800 }; + + +/// @brief Initialize and return a viewer. +/// @param progName the name of the calling program (for use in info displays) +/// @param background if true, run the viewer in a separate thread +/// @note Currently, the viewer window is a singleton (but that might change +/// in the future), so although this function returns a new Viewer instance +/// on each call, all instances are associated with the same window. +Viewer init(const std::string& progName, bool background); + +/// @brief Destroy all viewer windows and release resources. +/// @details This should be called from the main thread before your program exits. +void exit(); + + +/// Manager for a window that displays OpenVDB grids +class Viewer +{ +public: + /// Set the size of and open the window associated with this viewer. + void open(int width = DEFAULT_WIDTH, int height = DEFAULT_HEIGHT); + + /// Display the given grids. + void view(const openvdb::GridCPtrVec&); + + /// @brief Process any pending user input (keyboard, mouse, etc.) + /// in the window associated with this viewer. + void handleEvents(); + + /// @brief Close the window associated with this viewer. + /// @warning The window associated with this viewer might be shared with other viewers. + void close(); + + /// Resize the window associated with this viewer. + void resize(int width, int height); + + /// Return a string with version number information. + std::string getVersionString() const; + +private: + friend Viewer init(const std::string&, bool); + Viewer(); +}; + +} // namespace openvdb_viewer + +#endif // OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED diff --git a/scenes/bacilli_on_agar.py b/scenes/bacilli_on_agar.py new file mode 100644 index 00000000..35d80ea4 --- /dev/null +++ b/scenes/bacilli_on_agar.py @@ -0,0 +1,143 @@ +# +# Simple flip with level set and basic resampling +# +from manta import * + +# solver params +dim = 3 +res = 64 +#res = 128 +gs = vec3(res,res,res) + +if (dim==2): + gs.z=1 + +s = Solver(name='main', gridSize = gs, dim=dim) +s.timestep = 0.8 +minParticles = pow(2,dim) + +# save particles for separate surface generation pass? +saveParts = False + +# size of particles +radiusFactor = 1.0 + +# prepare grids and particles +flags = s.create(FlagGrid) +phi = s.create(LevelsetGrid) + +vel = s.create(MACGrid) +velOld = s.create(MACGrid) +pressure = s.create(RealGrid) +tmpVec3 = s.create(VecGrid) +tstGrid = s.create(RealGrid) + +pp = s.create(BasicParticleSystem) +pVel = pp.create(PdataVec3) +# test real value, not necessary for simulation +pTest = pp.create(PdataReal) +mesh = s.create(Mesh) + +# acceleration data for particle nbs +pindex = s.create(ParticleIndexSystem) +gpi = s.create(IntGrid) + +# scene setup, 0=breaking dam, 1=drop into pool +setup = 1 +bWidth=1 +flags.initDomain(boundaryWidth=bWidth) +fluidVel = 0 +fluidSetVel = 0 + +if setup==0: + # breaking dam + fluidbox = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(0.4,0.6,1)) # breaking dam + #fluidbox = Box( parent=s, p0=gs*vec3(0.4,0.72,0.4), p1=gs*vec3(0.6,0.92,0.6)) # centered falling block + phi = fluidbox.computeLevelset() +elif setup==1: + # falling drop + fluidBasin = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(1.0,0.1,1.0)) # basin + dropCenter = vec3(0.5,0.3,0.5) + dropRadius = 0.1 + fluidDrop = Sphere( parent=s , center=gs*dropCenter, radius=res*dropRadius) + fluidVel = Sphere( parent=s , center=gs*dropCenter, radius=res*(dropRadius+0.05) ) + fluidSetVel= vec3(0,-1,0) + phi = fluidBasin.computeLevelset() + phi.join( fluidDrop.computeLevelset() ) + +flags.updateFromLevelset(phi) +#setOpenBound(flags,bWidth,'xX',FlagOutflow|FlagEmpty) +sampleLevelsetWithParticles( phi=phi, flags=flags, parts=pp, discretization=2, randomness=0.05 ) + +if fluidVel!=0: + # set initial velocity + fluidVel.applyToGrid( grid=vel , value=fluidSetVel ) + mapGridToPartsVec3(source=vel, parts=pp, target=pVel ) + +# testing the real channel while resampling - original particles +# will have a value of 0.1, new particle will get a value from the tstGrid +testInitGridWithPos(tstGrid) +pTest.setConst( 0.1 ) + +# save reference any grid, to automatically determine grid size +if saveParts: + pressure.save( 'ref_flipParts_0000.uni' ); + +if 1 and (GUI): + gui = Gui() + gui.show() + #gui.pause() + + +#main loop +for t in range(2500): + mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) + + # FLIP + pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) + + # make sure we have velocities throught liquid region + mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) + extrapolateMACFromWeight( vel=vel , distance=2, weight=tmpVec3 ) # note, tmpVec3 could be free'd now... + markFluidCells( parts=pp, flags=flags ) + + # create approximate surface level set, resample particles + gridParticleIndex( parts=pp , flags=flags, indexSys=pindex, index=gpi ) + unionParticleLevelset( pp, pindex, flags, gpi, phi , radiusFactor ) + resetOutflow(flags=flags,parts=pp,index=gpi,indexSys=pindex) + # extend levelset somewhat, needed by particle resampling in adjustNumber + extrapolateLsSimple(phi=phi, distance=4, inside=True); + + # forces & pressure solve + addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) + setWallBcs(flags=flags, vel=vel) + solvePressure(flags=flags, vel=vel, pressure=pressure, phi=phi) + setWallBcs(flags=flags, vel=vel) + + # set source grids for resampling, used in adjustNumber! + pVel.setSource( vel, isMAC=True ) + pTest.setSource( tstGrid ); + adjustNumber( parts=pp, vel=vel, flags=flags, minParticles=1*minParticles, maxParticles=2*minParticles, phi=phi, radiusFactor=radiusFactor ) + + # make sure we have proper velocities + extrapolateMACSimple( flags=flags, vel=vel ) + + flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) + + if (dim==3): + phi.createMesh(mesh) + + #s.printMemInfo() + s.step() + + # file_name = './frames/particles-frame-%d.nptxt' % s.frame + # pp.save(file_name) + + # generate data for flip03_gen.py surface generation scene + # if saveParts: + # pp.save( 'flipParts_%04d.uni' % t ); + + # if 0 and (GUI): + # gui.screenshot( 'flip02_%04d.png' % t ); + + diff --git a/scenes/flip01_simple.py b/scenes/flip01_simple.py index 3a5091cd..67311677 100644 --- a/scenes/flip01_simple.py +++ b/scenes/flip01_simple.py @@ -12,6 +12,7 @@ if (dim==2): gs.z=1 particleNumber = 3 # use more particles in 2d + s = Solver(name='main', gridSize = gs, dim=dim) s.timestep = 0.5 diff --git a/scenes/flip02_surface.py b/scenes/flip02_surface.py index 1e3ab11d..cc0ef7c5 100644 --- a/scenes/flip02_surface.py +++ b/scenes/flip02_surface.py @@ -8,6 +8,7 @@ res = 64 #res = 128 gs = vec3(res,res,res) + if (dim==2): gs.z=1 s = Solver(name='main', gridSize = gs, dim=dim) diff --git a/scenes/freesurface.py b/scenes/freesurface.py index 473938fb..40179144 100644 --- a/scenes/freesurface.py +++ b/scenes/freesurface.py @@ -16,7 +16,7 @@ # scene file params ghostFluid = True -doOpen = False +doOpen = True accuracy = 5e-4 # using fast marching is more accurate, but currently causes asymmetries useMarching = False diff --git a/scenes/view_particles_in_notebook.ipynb b/scenes/view_particles_in_notebook.ipynb index 45413390..1d43789c 100644 --- a/scenes/view_particles_in_notebook.ipynb +++ b/scenes/view_particles_in_notebook.ipynb @@ -48,7 +48,7 @@ "application/vnd.jupyter.widget-view+json": { "version_major": 2, "version_minor": 0, - "model_id": "7abf44e35b4c430aba7bf0c6d17fba96" + "model_id": "6df76752d32a4d45bcf5b02a7c842838" } }, "metadata": {} @@ -57,8 +57,8 @@ "source": [ "# View 50 frames at a time\n", "\n", - "start = 0\n", - "stop = 49\n", + "start = 49\n", + "stop = 99\n", "\n", "if start > 0:\n", " offset = start\n", From 0cb6c17f59f436bd652a995e66a5030f6bd9792a Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Fri, 31 Jul 2020 15:43:30 -0400 Subject: [PATCH 08/15] =?UTF-8?q?The=20Bacilli=20on=20Agar=20scene=20is=20?= =?UTF-8?q?specified.=20=20Started=20work=20on=20implementing=20the=20FLIP?= =?UTF-8?q?=20and=20shape=20matching=20coupled=20method=20described=20in?= =?UTF-8?q?=20Gao,=20Y.,=20Li,=20S.,=20Qin,=20H.=20et=20al.=20An=20efficie?= =?UTF-8?q?nt=20FLIP=20and=20shape=20matching=20coupled=20method=20for=20f?= =?UTF-8?q?luid=E2=80=93solid=20and=20two-phase=20fluid=20simulations.=20V?= =?UTF-8?q?is=20Comput=2035,=201741=E2=80=931753=20(2019).=20https://doi.o?= =?UTF-8?q?rg/10.1007/s00371-018-1569-8.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- scenes/bacilli_on_agar.2.py | 147 ++++++++++++++++++++++++++++++++++++ scenes/bacilli_on_agar.py | 143 ----------------------------------- scenes/flip01_simple.py | 4 +- scenes/flip03_gen.py | 2 +- scenes/flip06_obstacle.py | 18 ++--- scenes/meshload.py | 3 +- scenes/movingObstacle.py | 4 +- source/grid.h | 1 + source/plugin/pbd.cpp | 93 +++++++++++++++++++++++ 9 files changed, 257 insertions(+), 158 deletions(-) create mode 100644 scenes/bacilli_on_agar.2.py delete mode 100644 scenes/bacilli_on_agar.py create mode 100644 source/plugin/pbd.cpp diff --git a/scenes/bacilli_on_agar.2.py b/scenes/bacilli_on_agar.2.py new file mode 100644 index 00000000..4b89e5be --- /dev/null +++ b/scenes/bacilli_on_agar.2.py @@ -0,0 +1,147 @@ +# +# Bacilli on Agar +# + +from manta import * + +# solver params +dim = 3 +res = 64 +# res = 128 +gs = vec3(res,res,res) + +if (dim==2): + gs.z=1 + +solver = Solver(name='main', gridSize = gs, dim=dim) +solver.timestep = 0.8 +minParticles = pow(2,dim) + +# save particles for separate surface generation pass? +saveParts = False + +# size of particles +radiusFactor = 1.0 + +# prepare grids and particles +flags = solver.create(FlagGrid) +phi = solver.create(LevelsetGrid) +vel = solver.create(MACGrid) +velOld = solver.create(MACGrid) +pressure = solver.create(RealGrid) +tmpVec3 = solver.create(VecGrid) +force = solver.create(VecGrid) +pp = solver.create(BasicParticleSystem) +pVel = pp.create(PdataVec3) +mesh = solver.create(Mesh) + +# acceleration data for particle nbs +pindex = solver.create(ParticleIndexSystem) +gpi = solver.create(IntGrid) +bWidth=1 +flags.initDomain(boundaryWidth=bWidth) +fluidVel = 0 +fluidSetVel = 0 + +# The scale is 1 = 10 micrometer (1 x 10E-7 meter) +# Agar +agar = Box(parent=solver, p0=gs*vec3(0,0,0), p1=gs*vec3(1.0,0.1,1.0)) +phi = agar.computeLevelset() + +# Bacillus +center = vec3(0.5,0.1125,0.5) +radius = 0.0125 +zpoint = vec3(0, 0, 0.1) +# The mantaflow cylinder has a capsule-like geometry +bacillus = Cylinder(parent=solver, center=gs*center, radius=res*radius, z=gs*zpoint) +phiBacillus = bacillus.computeLevelset() +setObstacleFlags(flags=flags, phiObs=phiBacillus) + +# Join the agar and bacillus levelsets +phi.join(phiBacillus) + +flags.updateFromLevelset(phi) +sampleLevelsetWithParticles(phi=phi, flags=flags, parts=pp, discretization=2, randomness=0.05) + +# save reference any grid, to automatically determine grid size +if saveParts: + pressure.save('ref_flipParts_0000.uni'); + +if 1 and (GUI): + gui = Gui() + gui.show() + gui.pause() + + +#main loop +for t in range(2500): + # mantaMsg('\nFrame %i, simulation time %f' % (solver.frame, solver.timeTotal)) + + # Algorithm 1 in Gao, 2018 + # 1: Advect velocities of particles + pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) + + # 2: Enforce external forces (gravity) + addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) + + if t == 3: + force.setConst(vec3(0.0, 0.0, 0.5)) + addForceField(flags=flags, vel=vel, force=force) + + # 3: Verify fluid and solid particle flags via Fsolid, Ffluid + # 4: Map all the particles to grid ug ← up, xg ← xp + # 5: Compute level set Φ and velocity on grid ug + # 6: Project up ← ug,xp ← xg0 + ugΔt + # 7: if particle ∈ Fsolid then + # 8: Project shape matching constraint + # 9: Compute target position g + # 10: Update x∗+=α 􏰉g − x 􏰊 + # 11: Update u p∗ ← ( u p , ( x p∗ − x p0 ) / Δ t ) + # 12: else continue + # 13: Correct boundary conditions + # 14: Conduct the mechanism of penetration prevention + # 15: Update the velocities and positions of all particles + # 16: Update particles’ flags + + # make sure we have velocities throughout liquid region + mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) + extrapolateMACFromWeight(vel=vel , distance=2, weight=tmpVec3) # note, tmpVec3 could be free'd now... + markFluidCells(parts=pp, flags=flags) + + # create approximate surface level set, resample particles + gridParticleIndex(parts=pp , flags=flags, indexSys=pindex, index=gpi) + unionParticleLevelset(pp, pindex, flags, gpi, phi , radiusFactor) + resetOutflow(flags=flags,parts=pp,index=gpi,indexSys=pindex) + # extend levelset somewhat, needed by particle resampling in adjustNumber + extrapolateLsSimple(phi=phi, distance=4, inside=True); + + # forces & pressure solve + + + + + setWallBcs(flags=flags, vel=vel) + solvePressure(flags=flags, vel=vel, pressure=pressure, phi=phi) + + # set source grids for resampling, used in adjustNumber! + pVel.setSource( vel, isMAC=True ) + adjustNumber( parts=pp, vel=vel, flags=flags, minParticles=1*minParticles, maxParticles=2*minParticles, phi=phi, radiusFactor=radiusFactor ) + + # make sure we have proper velocities + extrapolateMACSimple( flags=flags, vel=vel ) + + flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) + + if (dim==3): + phi.createMesh(mesh) + mesh.fromShape(bacillus, append=True) + + #solver.printMemInfo() + solver.step() + + # generate data for flip03_gen.py surface generation scene + # if saveParts: + # pp.save( 'flipParts_%04d.uni' % t ); + + + diff --git a/scenes/bacilli_on_agar.py b/scenes/bacilli_on_agar.py deleted file mode 100644 index 35d80ea4..00000000 --- a/scenes/bacilli_on_agar.py +++ /dev/null @@ -1,143 +0,0 @@ -# -# Simple flip with level set and basic resampling -# -from manta import * - -# solver params -dim = 3 -res = 64 -#res = 128 -gs = vec3(res,res,res) - -if (dim==2): - gs.z=1 - -s = Solver(name='main', gridSize = gs, dim=dim) -s.timestep = 0.8 -minParticles = pow(2,dim) - -# save particles for separate surface generation pass? -saveParts = False - -# size of particles -radiusFactor = 1.0 - -# prepare grids and particles -flags = s.create(FlagGrid) -phi = s.create(LevelsetGrid) - -vel = s.create(MACGrid) -velOld = s.create(MACGrid) -pressure = s.create(RealGrid) -tmpVec3 = s.create(VecGrid) -tstGrid = s.create(RealGrid) - -pp = s.create(BasicParticleSystem) -pVel = pp.create(PdataVec3) -# test real value, not necessary for simulation -pTest = pp.create(PdataReal) -mesh = s.create(Mesh) - -# acceleration data for particle nbs -pindex = s.create(ParticleIndexSystem) -gpi = s.create(IntGrid) - -# scene setup, 0=breaking dam, 1=drop into pool -setup = 1 -bWidth=1 -flags.initDomain(boundaryWidth=bWidth) -fluidVel = 0 -fluidSetVel = 0 - -if setup==0: - # breaking dam - fluidbox = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(0.4,0.6,1)) # breaking dam - #fluidbox = Box( parent=s, p0=gs*vec3(0.4,0.72,0.4), p1=gs*vec3(0.6,0.92,0.6)) # centered falling block - phi = fluidbox.computeLevelset() -elif setup==1: - # falling drop - fluidBasin = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(1.0,0.1,1.0)) # basin - dropCenter = vec3(0.5,0.3,0.5) - dropRadius = 0.1 - fluidDrop = Sphere( parent=s , center=gs*dropCenter, radius=res*dropRadius) - fluidVel = Sphere( parent=s , center=gs*dropCenter, radius=res*(dropRadius+0.05) ) - fluidSetVel= vec3(0,-1,0) - phi = fluidBasin.computeLevelset() - phi.join( fluidDrop.computeLevelset() ) - -flags.updateFromLevelset(phi) -#setOpenBound(flags,bWidth,'xX',FlagOutflow|FlagEmpty) -sampleLevelsetWithParticles( phi=phi, flags=flags, parts=pp, discretization=2, randomness=0.05 ) - -if fluidVel!=0: - # set initial velocity - fluidVel.applyToGrid( grid=vel , value=fluidSetVel ) - mapGridToPartsVec3(source=vel, parts=pp, target=pVel ) - -# testing the real channel while resampling - original particles -# will have a value of 0.1, new particle will get a value from the tstGrid -testInitGridWithPos(tstGrid) -pTest.setConst( 0.1 ) - -# save reference any grid, to automatically determine grid size -if saveParts: - pressure.save( 'ref_flipParts_0000.uni' ); - -if 1 and (GUI): - gui = Gui() - gui.show() - #gui.pause() - - -#main loop -for t in range(2500): - mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) - - # FLIP - pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) - - # make sure we have velocities throught liquid region - mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) - extrapolateMACFromWeight( vel=vel , distance=2, weight=tmpVec3 ) # note, tmpVec3 could be free'd now... - markFluidCells( parts=pp, flags=flags ) - - # create approximate surface level set, resample particles - gridParticleIndex( parts=pp , flags=flags, indexSys=pindex, index=gpi ) - unionParticleLevelset( pp, pindex, flags, gpi, phi , radiusFactor ) - resetOutflow(flags=flags,parts=pp,index=gpi,indexSys=pindex) - # extend levelset somewhat, needed by particle resampling in adjustNumber - extrapolateLsSimple(phi=phi, distance=4, inside=True); - - # forces & pressure solve - addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) - setWallBcs(flags=flags, vel=vel) - solvePressure(flags=flags, vel=vel, pressure=pressure, phi=phi) - setWallBcs(flags=flags, vel=vel) - - # set source grids for resampling, used in adjustNumber! - pVel.setSource( vel, isMAC=True ) - pTest.setSource( tstGrid ); - adjustNumber( parts=pp, vel=vel, flags=flags, minParticles=1*minParticles, maxParticles=2*minParticles, phi=phi, radiusFactor=radiusFactor ) - - # make sure we have proper velocities - extrapolateMACSimple( flags=flags, vel=vel ) - - flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) - - if (dim==3): - phi.createMesh(mesh) - - #s.printMemInfo() - s.step() - - # file_name = './frames/particles-frame-%d.nptxt' % s.frame - # pp.save(file_name) - - # generate data for flip03_gen.py surface generation scene - # if saveParts: - # pp.save( 'flipParts_%04d.uni' % t ); - - # if 0 and (GUI): - # gui.screenshot( 'flip02_%04d.png' % t ); - - diff --git a/scenes/flip01_simple.py b/scenes/flip01_simple.py index 67311677..e427b0ef 100644 --- a/scenes/flip01_simple.py +++ b/scenes/flip01_simple.py @@ -29,8 +29,8 @@ # scene setup flags.initDomain(boundaryWidth=0) # enable one of the following -fluidbox = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(0.4,0.6,1)) # breaking dam -#fluidbox = Box( parent=s, p0=gs*vec3(0.4,0.72,0.4), p1=gs*vec3(0.6,0.92,0.6)) # centered falling block +# fluidbox = Box( parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(0.4,0.6,1)) # breaking dam +fluidbox = Box( parent=s, p0=gs*vec3(0.4,0.72,0.4), p1=gs*vec3(0.6,0.92,0.6)) # centered falling block phiInit = fluidbox.computeLevelset() flags.updateFromLevelset(phiInit) # phiInit is not needed from now on! diff --git a/scenes/flip03_gen.py b/scenes/flip03_gen.py index 732d5fd4..551f1f38 100644 --- a/scenes/flip03_gen.py +++ b/scenes/flip03_gen.py @@ -21,7 +21,7 @@ upres = 2.0 # output file name so that blender can directly read it... -meshfile = 'fluidsurface_final_%04d.bobj.gz' +meshfile = 'frames/fluidsurface_final_%04d.bobj.gz' # resolution for level set / output mesh refName = ("ref_" + (partfile % 0) ) diff --git a/scenes/flip06_obstacle.py b/scenes/flip06_obstacle.py index ee642071..b2ad4ed7 100644 --- a/scenes/flip06_obstacle.py +++ b/scenes/flip06_obstacle.py @@ -146,14 +146,14 @@ s.step() - if (lastFrame!=s.frame): - # generate data for flip03_gen.py surface generation scene - if saveParts: - pp.save( 'flipParts_%04d.uni' % s.frame ); - if 0 and (GUI): - gui.screenshot( 'flip06_%04d.png' % s.frame ); - - #s.printMemInfo() - lastFrame = s.frame; + # if (lastFrame!=s.frame): + # # generate data for flip03_gen.py surface generation scene + # if saveParts: + # pp.save( 'flipParts_%04d.uni' % s.frame ); + # if 0 and (GUI): + # gui.screenshot( 'flip06_%04d.png' % s.frame ); + + # #s.printMemInfo() + # lastFrame = s.frame; diff --git a/scenes/meshload.py b/scenes/meshload.py index c07a0883..89e2b3fa 100644 --- a/scenes/meshload.py +++ b/scenes/meshload.py @@ -5,7 +5,8 @@ import os # mesh to load -meshfile = '../resources/simpletorus.obj' +# meshfile = '../resources/simpletorus.obj' +meshfile = './resources/simpletorus.obj' mantaMsg("Loading %s. Note: relative path by default, assumes this scene is called from the 'scenes' directory.") # resolution for level set / output mesh diff --git a/scenes/movingObstacle.py b/scenes/movingObstacle.py index 70699e6c..c40eec38 100644 --- a/scenes/movingObstacle.py +++ b/scenes/movingObstacle.py @@ -3,7 +3,7 @@ # from manta import * -dim = 2 +dim = 3 res = 50 gs = vec3(res,res, 1 if dim==2 else res ) s = Solver(name='main', gridSize = gs, dim=dim) @@ -37,7 +37,7 @@ #gui.pause() #main loop -for t in range(400): +for t in range(1000): mantaMsg('\nFrame %i' % (s.frame)) advectSemiLagrange(flags=flags, vel=vel, grid=density, order=2) diff --git a/source/grid.h b/source/grid.h index 16104922..1fc99364 100644 --- a/source/grid.h +++ b/source/grid.h @@ -298,6 +298,7 @@ PYTHON() class FlagGrid : public Grid { TypeOutflow = 16, TypeOpen = 32, TypeStick = 64, + TypeSolid = 128, // internal use only, for fast marching TypeReserved = 256, // 2^10 - 2^14 reserved for moving obstacles diff --git a/source/plugin/pbd.cpp b/source/plugin/pbd.cpp new file mode 100644 index 00000000..85f57e95 --- /dev/null +++ b/source/plugin/pbd.cpp @@ -0,0 +1,93 @@ +/****************************************************************************** + * + * Plugins for Position-Based Dynamics (PDB) + * Copyright 2020 Cesar Rodriguez, James Mossell + * + * The implementation is based on the publication An efficient FLIP and shape + * matching coupled method for fluid-solid and two-phase fluid simulations by + * Yang Gao, Shuai Li, Hong Qin, Yinghao Xu, and Aimin Hao + * https://doi.org/10.1007/s00371-018-1569-8 + * + * This source code is free and distributed under the terms of the + * Apache License, Version 2.0 + * http://www.apache.org/licenses/LICENSE-2.0 + * + * + ******************************************************************************/ + +#include "vectorbase.h" +#include "grid.h" +#include "kernel.h" +#include + +using namespace std; + +namespace Manta { + + //! add constant force between fl/fl and fl/em cells + KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { + bool curFluid = flags.isFluid(i,j,k); + bool curEmpty = flags.isEmpty(i,j,k); + if (!curFluid && !curEmpty) return; + if (exclude && ((*exclude)(i,j,k) < 0.)) return; + + if (flags.isFluid(i-1,j,k) || (curFluid && flags.isEmpty(i-1,j,k))) + vel(i,j,k).x = (additive) ? vel(i,j,k).x+force.x : force.x; + if (flags.isFluid(i,j-1,k) || (curFluid && flags.isEmpty(i,j-1,k))) + vel(i,j,k).y = (additive) ? vel(i,j,k).y+force.y : force.y; + if (vel.is3D() && (flags.isFluid(i,j,k-1) || (curFluid && flags.isEmpty(i,j,k-1)))) + vel(i,j,k).z = (additive) ? vel(i,j,k).z+force.z : force.z; + } + + //! add gravity forces to all fluid cells, optionally adapts to different grid sizes automatically + PYTHON() void addGravity(const FlagGrid& flags, MACGrid& vel, Vec3 gravity, const Grid* exclude=NULL, bool scale=true) { + float gridScale = (scale) ? flags.getDx() : 1; + Vec3 f = gravity * flags.getParent()->getDt() / gridScale; + KnApplyForce(flags, vel, f, exclude, true); + } + + + //! Semi-Lagrange interpolation kernel + KERNEL(bnd=1) template + void SemiLagrange (const FlagGrid& flags, const MACGrid& vel, Grid& dst, const Grid& src, Real dt, bool isLevelset, int orderSpace, int orderTrace) + { + if (orderTrace == 1) { + // traceback position + Vec3 pos = Vec3(i+0.5f,j+0.5f,k+0.5f) - vel.getCentered(i,j,k) * dt; + dst(i,j,k) = src.getInterpolatedHi(pos, orderSpace); + } else if (orderTrace == 2) { + // backtracing using explicit midpoint + Vec3 p0 = Vec3(i+0.5f,j+0.5f,k+0.5f); + Vec3 p1 = p0 - vel.getCentered(i,j,k)*dt*0.5; + Vec3 p2 = p0 - vel.getInterpolated(p1)*dt; + dst(i,j,k) = src.getInterpolatedHi(p2, orderSpace); + } else { + assertMsg(false, "Unknown backtracing order "<getType() & GridBase::TypeReal) { + fnAdvectSemiLagrange< Grid >(flags->getParent(), *flags, *vel, *((Grid*) grid), order, strength, orderSpace, clampMode, orderTrace); + } + else if (grid->getType() & GridBase::TypeMAC) { + fnAdvectSemiLagrange< MACGrid >(flags->getParent(), *flags, *vel, *((MACGrid*) grid), order, strength, orderSpace, clampMode, orderTrace); + } + else if (grid->getType() & GridBase::TypeVec3) { + fnAdvectSemiLagrange< Grid >(flags->getParent(), *flags, *vel, *((Grid*) grid), order, strength, orderSpace, clampMode, orderTrace); + } + else + errMsg("AdvectSemiLagrange: Grid Type is not supported (only Real, Vec3, MAC, Levelset)"); + } + +} // end namespace DDF + From a3f9526c8d13007a15adb74520841cbb90709cdd Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Fri, 31 Jul 2020 21:00:21 -0400 Subject: [PATCH 09/15] Implementing the FLIP and shape matching coupled method for fluid-solid simulations. --- scenes/bacilli_on_agar.2.py | 52 +++++++++++++++++-------------------- source/plugin/pbd.cpp | 47 +++++++++++++++++++++++++++++---- 2 files changed, 66 insertions(+), 33 deletions(-) diff --git a/scenes/bacilli_on_agar.2.py b/scenes/bacilli_on_agar.2.py index 4b89e5be..b5fb5a67 100644 --- a/scenes/bacilli_on_agar.2.py +++ b/scenes/bacilli_on_agar.2.py @@ -80,29 +80,7 @@ # Algorithm 1 in Gao, 2018 # 1: Advect velocities of particles pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) - - # 2: Enforce external forces (gravity) - addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) - - if t == 3: - force.setConst(vec3(0.0, 0.0, 0.5)) - addForceField(flags=flags, vel=vel, force=force) - - # 3: Verify fluid and solid particle flags via Fsolid, Ffluid - # 4: Map all the particles to grid ug ← up, xg ← xp - # 5: Compute level set Φ and velocity on grid ug - # 6: Project up ← ug,xp ← xg0 + ugΔt - # 7: if particle ∈ Fsolid then - # 8: Project shape matching constraint - # 9: Compute target position g - # 10: Update x∗+=α 􏰉g − x 􏰊 - # 11: Update u p∗ ← ( u p , ( x p∗ − x p0 ) / Δ t ) - # 12: else continue - # 13: Correct boundary conditions - # 14: Conduct the mechanism of penetration prevention - # 15: Update the velocities and positions of all particles - # 16: Update particles’ flags - + # make sure we have velocities throughout liquid region mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) extrapolateMACFromWeight(vel=vel , distance=2, weight=tmpVec3) # note, tmpVec3 could be free'd now... @@ -115,11 +93,6 @@ # extend levelset somewhat, needed by particle resampling in adjustNumber extrapolateLsSimple(phi=phi, distance=4, inside=True); - # forces & pressure solve - - - - setWallBcs(flags=flags, vel=vel) solvePressure(flags=flags, vel=vel, pressure=pressure, phi=phi) @@ -129,9 +102,32 @@ # make sure we have proper velocities extrapolateMACSimple( flags=flags, vel=vel ) + + # 2: Enforce external forces (gravity) + addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) + if t == 3: + force.setConst(vec3(0.0, 0.0, 0.5)) + addForceField(flags=flags, vel=vel, force=force) + + # 3: Verify fluid and solid particle flags via Fsolid, Ffluid + # 4: Map all the particles to grid ug ← up, xg ← xp + # 5: Compute level set Φ and velocity on grid ug + # 6: Project up ← ug,xp ← xg0 + ugΔt + # 7: if particle ∈ Fsolid then + # 8: Project shape matching constraint + # 9: Compute target position g + # 10: Update x∗+=α 􏰉g − x 􏰊 + # 11: Update u p∗ ← ( u p , ( x p∗ − x p0 ) / Δ t ) + # 12: else continue + # 13: Correct boundary conditions + # 14: Conduct the mechanism of penetration prevention + + # 15: Update the velocities and positions of all particles flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) + # 16: Update particles’ flags + if (dim==3): phi.createMesh(mesh) mesh.fromShape(bacillus, append=True) diff --git a/source/plugin/pbd.cpp b/source/plugin/pbd.cpp index 85f57e95..745f3bf4 100644 --- a/source/plugin/pbd.cpp +++ b/source/plugin/pbd.cpp @@ -1,11 +1,13 @@ /****************************************************************************** * - * Plugins for Position-Based Dynamics (PDB) + * Plugins for Position-Based Dynamics (PBD) * Copyright 2020 Cesar Rodriguez, James Mossell * - * The implementation is based on the publication An efficient FLIP and shape - * matching coupled method for fluid-solid and two-phase fluid simulations by - * Yang Gao, Shuai Li, Hong Qin, Yinghao Xu, and Aimin Hao + * The implementation is based on the publication: + * + * Gao, Y., Li, S., Qin, H. et al. An efficient FLIP and shape matching + * coupled method for fluid–solid and two-phase fluid simulations. + * Vis Comput 35, 1741–1753 (2019). * https://doi.org/10.1007/s00371-018-1569-8 * * This source code is free and distributed under the terms of the @@ -22,7 +24,42 @@ using namespace std; -namespace Manta { +namespace Manta { + +KERNEL (bnd=boundaryWidth) +void KnUpdateFlagsSolid(FlagGrid& flags, const MACGrid* fractions, const Grid& phiObs, const Grid* phiOut, const Grid* phiIn, int boundaryWidth) { + + bool isObs = false; + if(fractions) { + Real f = 0.; + f += fractions->get(i ,j,k).x; + f += fractions->get(i+1,j,k).x; + f += fractions->get(i,j ,k).y; + f += fractions->get(i,j+1,k).y; + if (flags.is3D()) { + f += fractions->get(i,j,k ).z; + f += fractions->get(i,j,k+1).z; } + if(f==0.) isObs = true; + } else { + if(phiObs(i,j,k) < 0.) isObs = true; + } + + bool isOutflow = false; + bool isInflow = false; + if (phiOut && (*phiOut)(i,j,k) < 0.) isOutflow = true; + if (phiIn && (*phiIn)(i,j,k) < 0.) isInflow = true; + + if (isObs) flags(i,j,k) = FlagGrid::TypeObstacle; + else if (isInflow) flags(i,j,k) = (FlagGrid::TypeFluid | FlagGrid::TypeInflow); + else if (isOutflow) flags(i,j,k) = (FlagGrid::TypeEmpty | FlagGrid::TypeOutflow); + else flags(i,j,k) = FlagGrid::TypeEmpty; +} + +//! update obstacle and outflow flags from levelsets +//! optionally uses fill fractions for obstacle +PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiObs, const MACGrid* fractions=NULL, const Grid* phiOut=NULL, const Grid* phiIn=NULL, int boundaryWidth=1) { + KnUpdateFlagsSolid(flags, fractions, phiObs, phiOut, phiIn, boundaryWidth); +} //! add constant force between fl/fl and fl/em cells KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { From 05d0c7c132767d5b3cac0f16dc5a84fb31684333 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Mon, 28 Sep 2020 16:23:40 -0400 Subject: [PATCH 10/15] Ignoring the Results folder in the Notebook folder. --- .gitignore | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/.gitignore b/.gitignore index 727f6f1d..9da37fe2 100644 --- a/.gitignore +++ b/.gitignore @@ -10,8 +10,7 @@ waveletNoiseTileDouble.bin build doc tensorflow/mantaGen/datasets -scenes/results -scenes/frames +notebooks/results # macos .DS_Store From f01845a02c675659ee9cb645c3453269496c084f Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Mon, 28 Sep 2020 16:28:55 -0400 Subject: [PATCH 11/15] Added a solid flag. Added an algorithm for setting solid flags from a levelset based on the geometry of a cylinder. Working on managing the solid flags with a position-based dynamics algorithm. --- CMakeLists.txt | 1 + notebooks/flags.ipynb | 69 +++++ .../view_particles_in_notebook.ipynb | 0 scenes/bacilli_on_agar.2.py | 37 +-- source/grid.cpp | 2 +- source/grid.h | 16 +- source/particle.h | 1 + source/plugin/pbd.cpp | 235 +++++++++++------- 8 files changed, 248 insertions(+), 113 deletions(-) create mode 100644 notebooks/flags.ipynb rename {scenes => notebooks}/view_particles_in_notebook.ipynb (100%) diff --git a/CMakeLists.txt b/CMakeLists.txt index 8324169b..0a11aecd 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -214,6 +214,7 @@ set(PP_SOURCES source/plugin/vortexplugins.cpp source/plugin/waveletturbulence.cpp source/plugin/waves.cpp + source/plugin/pbd.cpp source/python/defines.py source/test.cpp ) diff --git a/notebooks/flags.ipynb b/notebooks/flags.ipynb new file mode 100644 index 00000000..2dfb9fff --- /dev/null +++ b/notebooks/flags.ipynb @@ -0,0 +1,69 @@ +{ + "metadata": { + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.7.6-final" + }, + "orig_nbformat": 2, + "kernelspec": { + "name": "python_defaultSpec_1600384803676", + "display_name": "Python 3.7.6 64-bit ('anaconda3': conda)" + } + }, + "nbformat": 4, + "nbformat_minor": 2, + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "metadata": {}, + "outputs": [], + "source": [ + "import numpy as np" + ] + }, + { + "cell_type": "code", + "execution_count": 8, + "metadata": {}, + "outputs": [], + "source": [ + "file = np.load('./results/flags.npz')" + ] + }, + { + "cell_type": "code", + "execution_count": 11, + "metadata": { + "tags": [] + }, + "outputs": [ + { + "output_type": "stream", + "name": "stdout", + "text": "arr_0\niteration\n" + } + ], + "source": [ + "for data in file:\n", + " print(data)\n", + " print(\"iteration\")" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": {}, + "outputs": [], + "source": [] + } + ] +} \ No newline at end of file diff --git a/scenes/view_particles_in_notebook.ipynb b/notebooks/view_particles_in_notebook.ipynb similarity index 100% rename from scenes/view_particles_in_notebook.ipynb rename to notebooks/view_particles_in_notebook.ipynb diff --git a/scenes/bacilli_on_agar.2.py b/scenes/bacilli_on_agar.2.py index b5fb5a67..7431b929 100644 --- a/scenes/bacilli_on_agar.2.py +++ b/scenes/bacilli_on_agar.2.py @@ -49,13 +49,12 @@ phi = agar.computeLevelset() # Bacillus -center = vec3(0.5,0.1125,0.5) -radius = 0.0125 +center = vec3(0.5,0.2,0.5) +radius = 0.05 zpoint = vec3(0, 0, 0.1) -# The mantaflow cylinder has a capsule-like geometry -bacillus = Cylinder(parent=solver, center=gs*center, radius=res*radius, z=gs*zpoint) +bacillus = Cylinder(parent=solver, center=gs*center, radius=res*radius, z=gs*zpoint) # The mantaflow cylinder has a capsule-like geometry phiBacillus = bacillus.computeLevelset() -setObstacleFlags(flags=flags, phiObs=phiBacillus) +setSolidFlags(flags=flags, phiSolid=phiBacillus) # Join the agar and bacillus levelsets phi.join(phiBacillus) @@ -63,10 +62,6 @@ flags.updateFromLevelset(phi) sampleLevelsetWithParticles(phi=phi, flags=flags, parts=pp, discretization=2, randomness=0.05) -# save reference any grid, to automatically determine grid size -if saveParts: - pressure.save('ref_flipParts_0000.uni'); - if 1 and (GUI): gui = Gui() gui.show() @@ -74,8 +69,11 @@ #main loop -for t in range(2500): +for t in range(2500): # mantaMsg('\nFrame %i, simulation time %f' % (solver.frame, solver.timeTotal)) + + # if t==0: + # flags.printGrid() # Algorithm 1 in Gao, 2018 # 1: Advect velocities of particles @@ -106,15 +104,18 @@ # 2: Enforce external forces (gravity) addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) - if t == 3: - force.setConst(vec3(0.0, 0.0, 0.5)) - addForceField(flags=flags, vel=vel, force=force) + # if t == 3: + # force.setConst(vec3(0.0, 0.0, 0.5)) + # addForceField(flags=flags, vel=vel, force=force) + # This is likely FLIP # 3: Verify fluid and solid particle flags via Fsolid, Ffluid # 4: Map all the particles to grid ug ← up, xg ← xp # 5: Compute level set Φ and velocity on grid ug # 6: Project up ← ug,xp ← xg0 + ugΔt # 7: if particle ∈ Fsolid then + + # This is PBD # 8: Project shape matching constraint # 9: Compute target position g # 10: Update x∗+=α 􏰉g − x 􏰊 @@ -130,14 +131,14 @@ if (dim==3): phi.createMesh(mesh) - mesh.fromShape(bacillus, append=True) + # mesh.fromShape(bacillus, append=True) #solver.printMemInfo() - solver.step() - # generate data for flip03_gen.py surface generation scene - # if saveParts: - # pp.save( 'flipParts_%04d.uni' % t ); + if t == 20: + flags.printGrid() + + solver.step() diff --git a/source/grid.cpp b/source/grid.cpp index 84844a8a..2f56f732 100644 --- a/source/grid.cpp +++ b/source/grid.cpp @@ -843,7 +843,7 @@ void FlagGrid::initBoundaries(const int &boundaryWidth, const int *types) { void FlagGrid::updateFromLevelset(LevelsetGrid& levelset) { FOR_IDX(*this) { - if (!isObstacle(idx) && !isOutflow(idx)) { + if (!isObstacle(idx) && !isOutflow(idx) && !isSolid(idx)) { const Real phi = levelset[idx]; if (phi <= levelset.invalidTimeValue()) continue; diff --git a/source/grid.h b/source/grid.h index 1fc99364..d223c7e5 100644 --- a/source/grid.h +++ b/source/grid.h @@ -312,10 +312,14 @@ PYTHON() class FlagGrid : public Grid { inline bool isObstacle(int i, int j, int k) const { return get(i,j,k) & TypeObstacle; } inline bool isObstacle(const Vec3i& pos) const { return get(pos) & TypeObstacle; } inline bool isObstacle(const Vec3& pos) const { return getAt(pos) & TypeObstacle; } - inline bool isFluid(IndexInt idx) const { return get(idx) & TypeFluid; } - inline bool isFluid(int i, int j, int k) const { return get(i,j,k) & TypeFluid; } - inline bool isFluid(const Vec3i& pos) const { return get(pos) & TypeFluid; } - inline bool isFluid(const Vec3& pos) const { return getAt(pos) & TypeFluid; } + + // Major Hack!!! + + inline bool isFluid(IndexInt idx) const { return get(idx) & (TypeFluid || TypeSolid); } + inline bool isFluid(int i, int j, int k) const { return get(i,j,k) & (TypeFluid || TypeSolid); } + inline bool isFluid(const Vec3i& pos) const { return get(pos) & (TypeFluid || TypeSolid); } + inline bool isFluid(const Vec3& pos) const { return getAt(pos) & (TypeFluid || TypeSolid); } + inline bool isInflow(IndexInt idx) const { return get(idx) & TypeInflow; } inline bool isInflow(int i, int j, int k) const { return get(i,j,k) & TypeInflow; } inline bool isInflow(const Vec3i& pos) const { return get(pos) & TypeInflow; } @@ -336,6 +340,10 @@ PYTHON() class FlagGrid : public Grid { inline bool isStick(int i, int j, int k) const { return get(i,j,k) & TypeStick; } inline bool isStick(const Vec3i& pos) const { return get(pos) & TypeStick; } inline bool isStick(const Vec3& pos) const { return getAt(pos) & TypeStick; } + inline bool isSolid(IndexInt idx) const { return get(idx) & TypeSolid; } + inline bool isSolid(int i, int j, int k) const { return get(i,j,k) & TypeSolid; } + inline bool isSolid(const Vec3i& pos) const { return get(pos) & TypeSolid; } + inline bool isSolid(const Vec3& pos) const { return getAt(pos) & TypeSolid; } void InitMinXWall(const int &boundaryWidth, Grid& phiWalls); diff --git a/source/particle.h b/source/particle.h index fb88fcda..ba484f5a 100644 --- a/source/particle.h +++ b/source/particle.h @@ -521,6 +521,7 @@ void ParticleSystem::advectInGrid( { // position clamp requires old positions, backup ParticleDataImpl *posOld = NULL; + if(!deleteInObstacle) { posOld = new ParticleDataImpl(this->getParent()); posOld->resize(mData.size()); diff --git a/source/plugin/pbd.cpp b/source/plugin/pbd.cpp index 745f3bf4..06854f49 100644 --- a/source/plugin/pbd.cpp +++ b/source/plugin/pbd.cpp @@ -25,106 +25,161 @@ using namespace std; namespace Manta { + //--------------------- Kernel Plugins --------------------------- -KERNEL (bnd=boundaryWidth) -void KnUpdateFlagsSolid(FlagGrid& flags, const MACGrid* fractions, const Grid& phiObs, const Grid* phiOut, const Grid* phiIn, int boundaryWidth) { - - bool isObs = false; - if(fractions) { - Real f = 0.; - f += fractions->get(i ,j,k).x; - f += fractions->get(i+1,j,k).x; - f += fractions->get(i,j ,k).y; - f += fractions->get(i,j+1,k).y; - if (flags.is3D()) { - f += fractions->get(i,j,k ).z; - f += fractions->get(i,j,k+1).z; } - if(f==0.) isObs = true; - } else { - if(phiObs(i,j,k) < 0.) isObs = true; - } + // KERNEL (bnd=boundaryWidth) + // void knUpdateFlagsSolid(FlagGrid& flags, const Grid& phiSolid, int boundaryWidth) { + // bool isSolid; + + // if(phiSolid(i,j,k) < 0.) isSolid = true; - bool isOutflow = false; - bool isInflow = false; - if (phiOut && (*phiOut)(i,j,k) < 0.) isOutflow = true; - if (phiIn && (*phiIn)(i,j,k) < 0.) isInflow = true; - - if (isObs) flags(i,j,k) = FlagGrid::TypeObstacle; - else if (isInflow) flags(i,j,k) = (FlagGrid::TypeFluid | FlagGrid::TypeInflow); - else if (isOutflow) flags(i,j,k) = (FlagGrid::TypeEmpty | FlagGrid::TypeOutflow); - else flags(i,j,k) = FlagGrid::TypeEmpty; -} - -//! update obstacle and outflow flags from levelsets -//! optionally uses fill fractions for obstacle -PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiObs, const MACGrid* fractions=NULL, const Grid* phiOut=NULL, const Grid* phiIn=NULL, int boundaryWidth=1) { - KnUpdateFlagsSolid(flags, fractions, phiObs, phiOut, phiIn, boundaryWidth); -} - - //! add constant force between fl/fl and fl/em cells - KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { - bool curFluid = flags.isFluid(i,j,k); - bool curEmpty = flags.isEmpty(i,j,k); - if (!curFluid && !curEmpty) return; - if (exclude && ((*exclude)(i,j,k) < 0.)) return; - - if (flags.isFluid(i-1,j,k) || (curFluid && flags.isEmpty(i-1,j,k))) - vel(i,j,k).x = (additive) ? vel(i,j,k).x+force.x : force.x; - if (flags.isFluid(i,j-1,k) || (curFluid && flags.isEmpty(i,j-1,k))) - vel(i,j,k).y = (additive) ? vel(i,j,k).y+force.y : force.y; - if (vel.is3D() && (flags.isFluid(i,j,k-1) || (curFluid && flags.isEmpty(i,j,k-1)))) - vel(i,j,k).z = (additive) ? vel(i,j,k).z+force.z : force.z; - } + // if (isSolid) flags(i,j,k) = FlagGrid::TypeSolid; - //! add gravity forces to all fluid cells, optionally adapts to different grid sizes automatically - PYTHON() void addGravity(const FlagGrid& flags, MACGrid& vel, Vec3 gravity, const Grid* exclude=NULL, bool scale=true) { - float gridScale = (scale) ? flags.getDx() : 1; - Vec3 f = gravity * flags.getParent()->getDt() / gridScale; - KnApplyForce(flags, vel, f, exclude, true); - } + // } + KERNEL (bnd=boundaryWidth) + void KnUpdateFlagsSolid(FlagGrid& flags, const MACGrid* fractions, const Grid& phiSolid, const Grid* phiOut, const Grid* phiIn, int boundaryWidth) { - //! Semi-Lagrange interpolation kernel - KERNEL(bnd=1) template - void SemiLagrange (const FlagGrid& flags, const MACGrid& vel, Grid& dst, const Grid& src, Real dt, bool isLevelset, int orderSpace, int orderTrace) - { - if (orderTrace == 1) { - // traceback position - Vec3 pos = Vec3(i+0.5f,j+0.5f,k+0.5f) - vel.getCentered(i,j,k) * dt; - dst(i,j,k) = src.getInterpolatedHi(pos, orderSpace); - } else if (orderTrace == 2) { - // backtracing using explicit midpoint - Vec3 p0 = Vec3(i+0.5f,j+0.5f,k+0.5f); - Vec3 p1 = p0 - vel.getCentered(i,j,k)*dt*0.5; - Vec3 p2 = p0 - vel.getInterpolated(p1)*dt; - dst(i,j,k) = src.getInterpolatedHi(p2, orderSpace); + bool isSolid = false; + + if(fractions) { + Real f = 0.; + f += fractions->get(i ,j,k).x; + f += fractions->get(i+1,j,k).x; + f += fractions->get(i,j ,k).y; + f += fractions->get(i,j+1,k).y; + if (flags.is3D()) { + f += fractions->get(i,j,k ).z; + f += fractions->get(i,j,k+1).z; } + if(f==0.) isSolid = true; } else { - assertMsg(false, "Unknown backtracing order "<getType() & GridBase::TypeReal) { - fnAdvectSemiLagrange< Grid >(flags->getParent(), *flags, *vel, *((Grid*) grid), order, strength, orderSpace, clampMode, orderTrace); - } - else if (grid->getType() & GridBase::TypeMAC) { - fnAdvectSemiLagrange< MACGrid >(flags->getParent(), *flags, *vel, *((MACGrid*) grid), order, strength, orderSpace, clampMode, orderTrace); - } - else if (grid->getType() & GridBase::TypeVec3) { - fnAdvectSemiLagrange< Grid >(flags->getParent(), *flags, *vel, *((Grid*) grid), order, strength, orderSpace, clampMode, orderTrace); - } - else - errMsg("AdvectSemiLagrange: Grid Type is not supported (only Real, Vec3, MAC, Levelset)"); + //! update obstacle and outflow flags from levelsets + //! optionally uses fill fractions for obstacle + PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiSolid, const MACGrid* fractions=NULL, const Grid* phiOut=NULL, const Grid* phiIn=NULL, int boundaryWidth=1){ + KnUpdateFlagsSolid(flags, fractions, phiSolid, phiOut, phiIn, boundaryWidth); } + // Update solid flags from levelsets + // PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiSolid, int boundaryWidth=1) { + // knUpdateFlagsSolid(flags, phiSolid, boundaryWidth); + // } + + // PYTHON() bool initShapeMatchingConstraint( + // const Vector3r x0[], const Real invMasses[], int numPoints, + // Vector3r &restCm, Matrix3r &invRestMat) + // { + // invRestMat.setIdentity(); + + // // center of mass + // restCm.setZero(); + // Real wsum = 0.0; + // for (int i = 0; i < numPoints; i++) { + // Real wi = static_cast(1.0) / (invMasses[i] + eps); + // restCm += x0[i] * wi; + // wsum += wi; + // } + // if (wsum == 0.0) + // return false; + // restCm /= wsum; + + // // A + // Matrix3r A; + // A.setZero(); + // for (int i = 0; i < numPoints; i++) { + // const Vector3r qi = x0[i] - restCm; + // Real wi = static_cast(1.0) / (invMasses[i] + eps); + // Real x2 = wi * qi[0] * qi[0]; + // Real y2 = wi * qi[1] * qi[1]; + // Real z2 = wi * qi[2] * qi[2]; + // Real xy = wi * qi[0] * qi[1]; + // Real xz = wi * qi[0] * qi[2]; + // Real yz = wi * qi[1] * qi[2]; + // A(0, 0) += x2; A(0, 1) += xy; A(0, 2) += xz; + // A(1, 0) += xy; A(1, 1) += y2; A(1, 2) += yz; + // A(2, 0) += xz; A(2, 1) += yz; A(2, 2) += z2; + // } + // Real det = A.determinant(); + // if (fabs(det) > eps) + // { + // invRestMat = A.inverse(); + // return true; + // } + // return false; + // } + + // PYTHON() bool solveShapeMatchingConstraint( + // const Vector3r x0[], const Vector3r x[], const Real invMasses[], int numPoints, + // const Vector3r &restCm, + // const Matrix3r &invRestMat, + // const Real stiffness, + // const bool allowStretch, + // Vector3r corr[], Matrix3r *rot) + // { + // for (int i = 0; i < numPoints; i++) + // corr[i].setZero(); + + // // center of mass + // Vector3r cm(0.0, 0.0, 0.0); + // Real wsum = 0.0; + // for (int i = 0; i < numPoints; i++) + // { + // Real wi = static_cast(1.0) / (invMasses[i] + eps); + // cm += x[i] * wi; + // wsum += wi; + // } + // if (wsum == 0.0) + // return false; + // cm /= wsum; + + // // A + // Matrix3r mat; + // mat.setZero(); + // for (int i = 0; i < numPoints; i++) { + // Vector3r q = x0[i] - restCm; + // Vector3r p = x[i] - cm; + + // Real w = static_cast(1.0) / (invMasses[i] + eps); + // p *= w; + + // mat(0, 0) += p[0] * q[0]; mat(0, 1) += p[0] * q[1]; mat(0, 2) += p[0] * q[2]; + // mat(1, 0) += p[1] * q[0]; mat(1, 1) += p[1] * q[1]; mat(1, 2) += p[1] * q[2]; + // mat(2, 0) += p[2] * q[0]; mat(2, 1) += p[2] * q[1]; mat(2, 2) += p[2] * q[2]; + // } + + // mat = mat * invRestMat; + + // Matrix3r R, U, D; + // R = mat; + // if (allowStretch) + // R = mat; + // else + // //MathFunctions::polarDecomposition(mat, R, U, D); + // MathFunctions::polarDecompositionStable(mat, eps, R); + + // for (int i = 0; i < numPoints; i++) { + // Vector3r goal = cm + R * (x0[i] - restCm); + // corr[i] = (goal - x[i]) * stiffness; + // } + + // if (rot) + // *rot = R; + + // return true; + // } + } // end namespace DDF From 153aeabde101d3e8e7e9cf98063960003f700adb Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Thu, 15 Oct 2020 17:05:30 -0400 Subject: [PATCH 12/15] The solid flag is used in the sampleFlagsWithParticles and addGravity functions. Added a new markSolidCells function. --- scenes/bacilli_on_agar.3.py | 111 ++++++++++++++++++++++++++++++++++++ source/grid.h | 15 +++-- source/plugin/extforces.cpp | 34 ++++++++++- source/plugin/flip.cpp | 91 ++++++++++++++++++++++++++++- 4 files changed, 243 insertions(+), 8 deletions(-) create mode 100644 scenes/bacilli_on_agar.3.py diff --git a/scenes/bacilli_on_agar.3.py b/scenes/bacilli_on_agar.3.py new file mode 100644 index 00000000..5a474ab3 --- /dev/null +++ b/scenes/bacilli_on_agar.3.py @@ -0,0 +1,111 @@ +# +# Very simple flip without level set +# and without any particle resampling +# +from manta import * + +# solver params +dim = 3 +particleNumber = 2 +res = 64 +gs = vec3(res,res,res) + +if (dim==2): + gs.z=1 + particleNumber = 3 # use more particles in 2d + +s = Solver(name='main', gridSize = gs, dim=dim) +s.timestep = 0.5 + +# prepare grids and particles +flags = s.create(FlagGrid) +vel = s.create(MACGrid) +velOld = s.create(MACGrid) +pressure = s.create(RealGrid) +tmpVec3 = s.create(VecGrid) +pp = s.create(BasicParticleSystem) +# add velocity data to particles +pVel = pp.create(PdataVec3) +mesh = s.create(Mesh) + +# scene setup +flags.initDomain(boundaryWidth=0) + +# The scale is 1 = 10 micrometer (1 x 10E-7 meter) +# Agar +agar = Box(parent=s, p0=gs*vec3(0,0,0), p1=gs*vec3(1.0,0.1,1.0)) +phi = agar.computeLevelset() + +# Bacillus +center = vec3(0.5,0.2,0.5) +radius = 0.05 +zpoint = vec3(0, 0, 0.1) +# The mantaflow cylinder has a capsule-like geometry +bacillus = Cylinder(parent=s, center=gs*center, radius=res*radius, z=gs*zpoint) +phiBacillus = bacillus.computeLevelset() + +# Fluid Cylinder +centerTwo = vec3(0.3,0.2,0.5) +cylinder = Cylinder(parent=s, center=gs*centerTwo, radius=res*radius, z=gs*zpoint) +phiCylinder = cylinder.computeLevelset() + +# Set the flags to solid for the bacillus +setSolidFlags(flags=flags, phiSolid=phiBacillus) + +# Join the agar and fluid cylinder levelsets +phi.join(phiCylinder) + +# Set the flags to fluid for the agar and cylinder +flags.updateFromLevelset(phi) + +# There's no resamplig here, so we need _LOTS_ of particles... +sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) + + +if (GUI): + gui = Gui() + gui.show() + gui.pause() + +if (dim==3): + phi.createMesh(mesh) + +#main loop +for t in range(2500): + # mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) + + # Algorithm 1 in Gao, 2018 + + # 1: Advect velocities of particles + # 2: Enforce external forces (gravity) + # 3: Verify fluid and solid particle flags via Fsolid, Ffluid + # 4: Map all the particles to grid ug ← up, xg ← xp + # 6: Project up ← ug,xp ← xg0 + ugΔt + # 7: if particle ∈ Fsolid then + # 8: Project shape matching constraint + # 9: Compute target position g + # 10: Update x∗+=α 􏰉g − x 􏰊 + # 11: Update u p∗ ← ( u p , ( x p∗ − x p0 ) / Δ t ) + # 12: else continue + # 13: Correct boundary conditions + # 14: Conduct the mechanism of penetration prevention + # 15: Update the velocities and positions of all particles + # 16: Update particles’ flags + + pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) + mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) + extrapolateMACFromWeight( vel=vel , distance=2, weight=tmpVec3 ) + + markFluidCells(parts=pp, flags=flags) + markSolidCells(parts=pp, flags=flags) + + addGravity(flags=flags, vel=vel, gravity=(0,-0.002,0)) + setWallBcs(flags=flags, vel=vel) + solvePressure(flags=flags, vel=vel, pressure=pressure) + # setWallBcs(flags=flags, vel=vel) + + extrapolateMACSimple( flags=flags, vel=vel ) + flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97) + + s.step() + diff --git a/source/grid.h b/source/grid.h index d223c7e5..c8bd6ec1 100644 --- a/source/grid.h +++ b/source/grid.h @@ -313,33 +313,36 @@ PYTHON() class FlagGrid : public Grid { inline bool isObstacle(const Vec3i& pos) const { return get(pos) & TypeObstacle; } inline bool isObstacle(const Vec3& pos) const { return getAt(pos) & TypeObstacle; } - // Major Hack!!! - - inline bool isFluid(IndexInt idx) const { return get(idx) & (TypeFluid || TypeSolid); } - inline bool isFluid(int i, int j, int k) const { return get(i,j,k) & (TypeFluid || TypeSolid); } - inline bool isFluid(const Vec3i& pos) const { return get(pos) & (TypeFluid || TypeSolid); } - inline bool isFluid(const Vec3& pos) const { return getAt(pos) & (TypeFluid || TypeSolid); } + inline bool isFluid(IndexInt idx) const { return get(idx) & TypeFluid; } + inline bool isFluid(int i, int j, int k) const { return get(i,j,k) & TypeFluid; } + inline bool isFluid(const Vec3i& pos) const { return get(pos) & TypeFluid; } + inline bool isFluid(const Vec3& pos) const { return getAt(pos) & TypeFluid; } inline bool isInflow(IndexInt idx) const { return get(idx) & TypeInflow; } inline bool isInflow(int i, int j, int k) const { return get(i,j,k) & TypeInflow; } inline bool isInflow(const Vec3i& pos) const { return get(pos) & TypeInflow; } inline bool isInflow(const Vec3& pos) const { return getAt(pos) & TypeInflow; } + inline bool isEmpty(IndexInt idx) const { return get(idx) & TypeEmpty; } inline bool isEmpty(int i, int j, int k) const { return get(i,j,k) & TypeEmpty; } inline bool isEmpty(const Vec3i& pos) const { return get(pos) & TypeEmpty; } inline bool isEmpty(const Vec3& pos) const { return getAt(pos) & TypeEmpty; } + inline bool isOutflow(IndexInt idx) const { return get(idx) & TypeOutflow; } inline bool isOutflow(int i, int j, int k) const { return get(i, j, k) & TypeOutflow; } inline bool isOutflow(const Vec3i& pos) const { return get(pos) & TypeOutflow; } inline bool isOutflow(const Vec3& pos) const { return getAt(pos) & TypeOutflow; } + inline bool isOpen(IndexInt idx) const { return get(idx) & TypeOpen; } inline bool isOpen(int i, int j, int k) const { return get(i, j, k) & TypeOpen; } inline bool isOpen(const Vec3i& pos) const { return get(pos) & TypeOpen; } inline bool isOpen(const Vec3& pos) const { return getAt(pos) & TypeOpen; } + inline bool isStick(IndexInt idx) const { return get(idx) & TypeStick; } inline bool isStick(int i, int j, int k) const { return get(i,j,k) & TypeStick; } inline bool isStick(const Vec3i& pos) const { return get(pos) & TypeStick; } inline bool isStick(const Vec3& pos) const { return getAt(pos) & TypeStick; } + inline bool isSolid(IndexInt idx) const { return get(idx) & TypeSolid; } inline bool isSolid(int i, int j, int k) const { return get(i,j,k) & TypeSolid; } inline bool isSolid(const Vec3i& pos) const { return get(pos) & TypeSolid; } diff --git a/source/plugin/extforces.cpp b/source/plugin/extforces.cpp index 731a8ceb..6849a540 100644 --- a/source/plugin/extforces.cpp +++ b/source/plugin/extforces.cpp @@ -43,18 +43,50 @@ KERNEL(bnd=1) void KnApplyForceField(const FlagGrid& flags, MACGrid& vel, const } //! add constant force between fl/fl and fl/em cells +// KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { +// bool curFluid = flags.isFluid(i,j,k); +// bool curEmpty = flags.isEmpty(i,j,k); +// if (!curFluid && !curEmpty) return; +// if (exclude && ((*exclude)(i,j,k) < 0.)) return; + +// if (flags.isFluid(i-1,j,k) || (curFluid && flags.isEmpty(i-1,j,k))) +// vel(i,j,k).x = (additive) ? vel(i,j,k).x+force.x : force.x; +// if (flags.isFluid(i,j-1,k) || (curFluid && flags.isEmpty(i,j-1,k))) +// vel(i,j,k).y = (additive) ? vel(i,j,k).y+force.y : force.y; +// if (vel.is3D() && (flags.isFluid(i,j,k-1) || (curFluid && flags.isEmpty(i,j,k-1)))) +// vel(i,j,k).z = (additive) ? vel(i,j,k).z+force.z : force.z; +// } + KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { bool curFluid = flags.isFluid(i,j,k); + bool curSolid = flags.isSolid(i,j,k); bool curEmpty = flags.isEmpty(i,j,k); - if (!curFluid && !curEmpty) return; + + if (!curFluid && !curEmpty && !curSolid) return; if (exclude && ((*exclude)(i,j,k) < 0.)) return; + // fl/fl and fl/em if (flags.isFluid(i-1,j,k) || (curFluid && flags.isEmpty(i-1,j,k))) vel(i,j,k).x = (additive) ? vel(i,j,k).x+force.x : force.x; + if (flags.isFluid(i,j-1,k) || (curFluid && flags.isEmpty(i,j-1,k))) vel(i,j,k).y = (additive) ? vel(i,j,k).y+force.y : force.y; + if (vel.is3D() && (flags.isFluid(i,j,k-1) || (curFluid && flags.isEmpty(i,j,k-1)))) vel(i,j,k).z = (additive) ? vel(i,j,k).z+force.z : force.z; + + // solid/solid and solid/em + + if (flags.isSolid(i-1,j,k) || (curSolid && flags.isEmpty(i-1,j,k))) + vel(i,j,k).x = (additive) ? vel(i,j,k).x+force.x : force.x; + + if (flags.isSolid(i,j-1,k) || (curSolid && flags.isEmpty(i,j-1,k))) + vel(i,j,k).y = (additive) ? vel(i,j,k).y+force.y : force.y; + + if (vel.is3D() && (flags.isSolid(i,j,k-1) || (curSolid && flags.isEmpty(i,j,k-1)))) + vel(i,j,k).z = (additive) ? vel(i,j,k).z+force.z : force.z; + + // fluid/solid } //! add gravity forces to all fluid cells, optionally adapts to different grid sizes automatically diff --git a/source/plugin/flip.cpp b/source/plugin/flip.cpp index 0c9c2415..08b71225 100644 --- a/source/plugin/flip.cpp +++ b/source/plugin/flip.cpp @@ -29,6 +29,31 @@ namespace Manta { // init //! note - this is a simplified version , sampleLevelsetWithParticles has more functionality +// PYTHON() void sampleFlagsWithParticles(const FlagGrid& flags, BasicParticleSystem& parts, +// const int discretization, const Real randomness) +// { +// const bool is3D = flags.is3D(); +// const Real jlen = randomness / discretization; +// const Vec3 disp (1.0 / discretization, 1.0 / discretization, 1.0/discretization); +// RandomStream mRand(9832); + +// FOR_IJK_BND(flags, 0) { +// if (flags.isObstacle(i,j,k)) continue; +// if (flags.isFluid(i,j,k)) { +// const Vec3 pos (i,j,k); +// for (int dk=0; dk<(is3D ? discretization : 1); dk++) +// for (int dj=0; dj* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { +// // remove all fluid and solid cells +// knClearFluidSolidFlags(flags, 0); + +// // mark all particles in flaggrid as fluid +// for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { + // remove all solid cells + knClearSolidFlags(flags, 0); + + // mark all particles in flaggrid as solid + for(IndexInt idx=0; idx& grid) { FOR_IJK(grid) { grid(i,j,k) = norm( Vec3(i,j,k) ); } @@ -564,6 +652,7 @@ void knMapLinearVec3ToMACGrid(const BasicParticleSystem& p, const FlagGrid& flag const ParticleDataImpl& pvel, const ParticleDataImpl* ptype, const int exclude) { unusedParameter(flags); + if (!p.isActive(idx) || (ptype && ((*ptype)[idx] & exclude))) return; vel.setInterpolated( p[idx].pos, pvel[idx], &tmp[0] ); } From 28ab35255b73f35f77a011a44b8a01407c6770d5 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Fri, 16 Oct 2020 03:45:54 -0400 Subject: [PATCH 13/15] Particles that are part of a solid can be tracked over time. Need to modify the pressure solver to include TypeSolid particles. --- scenes/bacilli_on_agar.3.py | 44 +++++++++++++++------ source/grid.h | 2 +- source/plugin/extforces.cpp | 2 +- source/plugin/flip.cpp | 78 ++++++++++++++++++++++--------------- source/plugin/pbd.cpp | 16 +++++++- 5 files changed, 94 insertions(+), 48 deletions(-) diff --git a/scenes/bacilli_on_agar.3.py b/scenes/bacilli_on_agar.3.py index 5a474ab3..a3a048de 100644 --- a/scenes/bacilli_on_agar.3.py +++ b/scenes/bacilli_on_agar.3.py @@ -49,10 +49,14 @@ cylinder = Cylinder(parent=s, center=gs*centerTwo, radius=res*radius, z=gs*zpoint) phiCylinder = cylinder.computeLevelset() +# phi.join(phiBacillus) + # Set the flags to solid for the bacillus setSolidFlags(flags=flags, phiSolid=phiBacillus) +# setSolidFlags(flags=flags, phiSolid=phi) -# Join the agar and fluid cylinder levelsets +# Join the agar, bacillus, and fluid cylinder levelsets +phi.join(phiBacillus) phi.join(phiCylinder) # Set the flags to fluid for the agar and cylinder @@ -61,21 +65,30 @@ # There's no resamplig here, so we need _LOTS_ of particles... sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) - +indices = [] + +for index in range(pp.pySize()): + inSolid = isParticleInSolid(index=index, particles=pp, flags=flags) + + if inSolid: + indices.append(index) + +# print(indices) + if (GUI): gui = Gui() gui.show() gui.pause() -if (dim==3): - phi.createMesh(mesh) +# if (dim==3): +# phi.createMesh(mesh) #main loop for t in range(2500): # mantaMsg('\nFrame %i, simulation time %f' % (s.frame, s.timeTotal)) # Algorithm 1 in Gao, 2018 - + # 1: Advect velocities of particles # 2: Enforce external forces (gravity) # 3: Verify fluid and solid particle flags via Fsolid, Ffluid @@ -92,20 +105,27 @@ # 15: Update the velocities and positions of all particles # 16: Update particles’ flags + # FLIP pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) extrapolateMACFromWeight( vel=vel , distance=2, weight=tmpVec3 ) - markFluidCells(parts=pp, flags=flags) - markSolidCells(parts=pp, flags=flags) + clearSolidFlags(flags = flags) + + for index in indices: + markCellSolid(index=index, particles=pp, flags=flags) addGravity(flags=flags, vel=vel, gravity=(0,-0.002,0)) + + # pressure solve setWallBcs(flags=flags, vel=vel) solvePressure(flags=flags, vel=vel, pressure=pressure) - # setWallBcs(flags=flags, vel=vel) - - extrapolateMACSimple( flags=flags, vel=vel ) - flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97) + setWallBcs(flags=flags, vel=vel) - s.step() + # we dont have any levelset, ie no extrapolation, so make sure the velocities are valid + extrapolateMACSimple(flags=flags, vel=vel) + + # FLIP velocity update + flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) + s.step() \ No newline at end of file diff --git a/source/grid.h b/source/grid.h index c8bd6ec1..46e8af42 100644 --- a/source/grid.h +++ b/source/grid.h @@ -343,7 +343,7 @@ PYTHON() class FlagGrid : public Grid { inline bool isStick(const Vec3i& pos) const { return get(pos) & TypeStick; } inline bool isStick(const Vec3& pos) const { return getAt(pos) & TypeStick; } - inline bool isSolid(IndexInt idx) const { return get(idx) & TypeSolid; } + PYTHON() inline bool isSolid(IndexInt idx) const { return get(idx) & TypeSolid; } inline bool isSolid(int i, int j, int k) const { return get(i,j,k) & TypeSolid; } inline bool isSolid(const Vec3i& pos) const { return get(pos) & TypeSolid; } inline bool isSolid(const Vec3& pos) const { return getAt(pos) & TypeSolid; } diff --git a/source/plugin/extforces.cpp b/source/plugin/extforces.cpp index 6849a540..9fbe11d9 100644 --- a/source/plugin/extforces.cpp +++ b/source/plugin/extforces.cpp @@ -42,7 +42,7 @@ KERNEL(bnd=1) void KnApplyForceField(const FlagGrid& flags, MACGrid& vel, const vel(i,j,k).z = (additive) ? vel(i,j,k).z+forceZ : forceZ; } -//! add constant force between fl/fl and fl/em cells +// ! add constant force between fl/fl and fl/em cells // KERNEL(bnd=1) void KnApplyForce(const FlagGrid& flags, MACGrid& vel, Vec3 force, const Grid* exclude, bool additive) { // bool curFluid = flags.isFluid(i,j,k); // bool curEmpty = flags.isEmpty(i,j,k); diff --git a/source/plugin/flip.cpp b/source/plugin/flip.cpp index 08b71225..837037fe 100644 --- a/source/plugin/flip.cpp +++ b/source/plugin/flip.cpp @@ -161,11 +161,6 @@ PYTHON() void sampleShapeWithParticles(const Shape& shape, const FlagGrid& flags } //! mark fluid cells and helpers -KERNEL() void knClearFluidFlags(FlagGrid& flags, int dummy=0) { - if (flags.isFluid(i,j,k)) { - flags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeEmpty) & ~FlagGrid::TypeFluid; - } -} KERNEL(bnd=1) void knSetNbObstacle(FlagGrid& nflags, const FlagGrid& flags, const Grid& phiObs) { if ( phiObs(i,j,k)>0. ) return; @@ -182,11 +177,18 @@ void knSetNbObstacle(FlagGrid& nflags, const FlagGrid& flags, const Grid& if(set) nflags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeFluid) & ~FlagGrid::TypeEmpty; } } + +KERNEL() void knClearFluidFlags(FlagGrid& flags, int dummy=0) { + if (flags.isFluid(i,j,k)) { + flags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeEmpty) & ~FlagGrid::TypeFluid; + } +} + PYTHON() void markFluidCells(const BasicParticleSystem& parts, FlagGrid& flags, const Grid* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { // remove all fluid cells knClearFluidFlags(flags, 0); - // mark all particles in flaggrid as fluid + // mark fluid particles in flaggrid as fluid for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { +// // remove all solid cells +// knClearSolidFlags(flags, 0); + +// // Mark particles in a solid as solid in the flaggrid +// for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { +PYTHON() void clearSolidFlags(FlagGrid& flags, int dummy = 0) { // remove all solid cells knClearSolidFlags(flags, 0); - - // mark all particles in flaggrid as solid - for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { + Vec3i p = toVec3i(particles.getPos(index)); + flags(p) = FlagGrid::TypeSolid; } // for testing purposes only... diff --git a/source/plugin/pbd.cpp b/source/plugin/pbd.cpp index 06854f49..f49515f8 100644 --- a/source/plugin/pbd.cpp +++ b/source/plugin/pbd.cpp @@ -20,6 +20,7 @@ #include "vectorbase.h" #include "grid.h" #include "kernel.h" +#include "particle.h" #include using namespace std; @@ -67,12 +68,23 @@ namespace Manta { else flags(i,j,k) = FlagGrid::TypeEmpty; } - //! update obstacle and outflow flags from levelsets - //! optionally uses fill fractions for obstacle PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiSolid, const MACGrid* fractions=NULL, const Grid* phiOut=NULL, const Grid* phiIn=NULL, int boundaryWidth=1){ KnUpdateFlagsSolid(flags, fractions, phiSolid, phiOut, phiIn, boundaryWidth); } + PYTHON() bool isParticleInSolid(const int index, const BasicParticleSystem& particles, FlagGrid& flags) { + bool inSolid; + + Vec3i position = toVec3i(particles.getPos(index)); + + if (flags.isSolid(position)) + inSolid = true; + else + inSolid = false; + + return inSolid; + } + // Update solid flags from levelsets // PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiSolid, int boundaryWidth=1) { // knUpdateFlagsSolid(flags, phiSolid, boundaryWidth); From e055f31b32812ae1b3cecb880b8a0e9c2ed67eda Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Sun, 18 Oct 2020 21:55:48 -0400 Subject: [PATCH 14/15] Particles in a ParticleSystem can store if a particle is in a solid object. The Position-based Dynamics plugin has functions that keep cells in a flag grid with the TypeSolid status when there are particles in the cell that have a PSOLID status (ie. part of a solid object). --- scenes/bacilli_on_agar.2.py | 144 ------------------------------------ scenes/bacilli_on_agar.3.py | 22 ++---- source/particle.h | 2 + source/plugin/flip.cpp | 72 ------------------ source/plugin/pbd.cpp | 59 ++++++++++++--- source/python/defines.py | 2 + 6 files changed, 60 insertions(+), 241 deletions(-) delete mode 100644 scenes/bacilli_on_agar.2.py diff --git a/scenes/bacilli_on_agar.2.py b/scenes/bacilli_on_agar.2.py deleted file mode 100644 index 7431b929..00000000 --- a/scenes/bacilli_on_agar.2.py +++ /dev/null @@ -1,144 +0,0 @@ -# -# Bacilli on Agar -# - -from manta import * - -# solver params -dim = 3 -res = 64 -# res = 128 -gs = vec3(res,res,res) - -if (dim==2): - gs.z=1 - -solver = Solver(name='main', gridSize = gs, dim=dim) -solver.timestep = 0.8 -minParticles = pow(2,dim) - -# save particles for separate surface generation pass? -saveParts = False - -# size of particles -radiusFactor = 1.0 - -# prepare grids and particles -flags = solver.create(FlagGrid) -phi = solver.create(LevelsetGrid) -vel = solver.create(MACGrid) -velOld = solver.create(MACGrid) -pressure = solver.create(RealGrid) -tmpVec3 = solver.create(VecGrid) -force = solver.create(VecGrid) -pp = solver.create(BasicParticleSystem) -pVel = pp.create(PdataVec3) -mesh = solver.create(Mesh) - -# acceleration data for particle nbs -pindex = solver.create(ParticleIndexSystem) -gpi = solver.create(IntGrid) -bWidth=1 -flags.initDomain(boundaryWidth=bWidth) -fluidVel = 0 -fluidSetVel = 0 - -# The scale is 1 = 10 micrometer (1 x 10E-7 meter) -# Agar -agar = Box(parent=solver, p0=gs*vec3(0,0,0), p1=gs*vec3(1.0,0.1,1.0)) -phi = agar.computeLevelset() - -# Bacillus -center = vec3(0.5,0.2,0.5) -radius = 0.05 -zpoint = vec3(0, 0, 0.1) -bacillus = Cylinder(parent=solver, center=gs*center, radius=res*radius, z=gs*zpoint) # The mantaflow cylinder has a capsule-like geometry -phiBacillus = bacillus.computeLevelset() -setSolidFlags(flags=flags, phiSolid=phiBacillus) - -# Join the agar and bacillus levelsets -phi.join(phiBacillus) - -flags.updateFromLevelset(phi) -sampleLevelsetWithParticles(phi=phi, flags=flags, parts=pp, discretization=2, randomness=0.05) - -if 1 and (GUI): - gui = Gui() - gui.show() - gui.pause() - - -#main loop -for t in range(2500): - # mantaMsg('\nFrame %i, simulation time %f' % (solver.frame, solver.timeTotal)) - - # if t==0: - # flags.printGrid() - - # Algorithm 1 in Gao, 2018 - # 1: Advect velocities of particles - pp.advectInGrid(flags=flags, vel=vel, integrationMode=IntRK4, deleteInObstacle=False ) - - # make sure we have velocities throughout liquid region - mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) - extrapolateMACFromWeight(vel=vel , distance=2, weight=tmpVec3) # note, tmpVec3 could be free'd now... - markFluidCells(parts=pp, flags=flags) - - # create approximate surface level set, resample particles - gridParticleIndex(parts=pp , flags=flags, indexSys=pindex, index=gpi) - unionParticleLevelset(pp, pindex, flags, gpi, phi , radiusFactor) - resetOutflow(flags=flags,parts=pp,index=gpi,indexSys=pindex) - # extend levelset somewhat, needed by particle resampling in adjustNumber - extrapolateLsSimple(phi=phi, distance=4, inside=True); - - setWallBcs(flags=flags, vel=vel) - solvePressure(flags=flags, vel=vel, pressure=pressure, phi=phi) - - # set source grids for resampling, used in adjustNumber! - pVel.setSource( vel, isMAC=True ) - adjustNumber( parts=pp, vel=vel, flags=flags, minParticles=1*minParticles, maxParticles=2*minParticles, phi=phi, radiusFactor=radiusFactor ) - - # make sure we have proper velocities - extrapolateMACSimple( flags=flags, vel=vel ) - - # 2: Enforce external forces (gravity) - addGravity(flags=flags, vel=vel, gravity=(0,-0.001,0)) - - # if t == 3: - # force.setConst(vec3(0.0, 0.0, 0.5)) - # addForceField(flags=flags, vel=vel, force=force) - - # This is likely FLIP - # 3: Verify fluid and solid particle flags via Fsolid, Ffluid - # 4: Map all the particles to grid ug ← up, xg ← xp - # 5: Compute level set Φ and velocity on grid ug - # 6: Project up ← ug,xp ← xg0 + ugΔt - # 7: if particle ∈ Fsolid then - - # This is PBD - # 8: Project shape matching constraint - # 9: Compute target position g - # 10: Update x∗+=α 􏰉g − x 􏰊 - # 11: Update u p∗ ← ( u p , ( x p∗ − x p0 ) / Δ t ) - # 12: else continue - # 13: Correct boundary conditions - # 14: Conduct the mechanism of penetration prevention - - # 15: Update the velocities and positions of all particles - flipVelocityUpdate(vel=vel, velOld=velOld, flags=flags, parts=pp, partVel=pVel, flipRatio=0.97 ) - - # 16: Update particles’ flags - - if (dim==3): - phi.createMesh(mesh) - # mesh.fromShape(bacillus, append=True) - - #solver.printMemInfo() - - if t == 20: - flags.printGrid() - - solver.step() - - - diff --git a/scenes/bacilli_on_agar.3.py b/scenes/bacilli_on_agar.3.py index a3a048de..bae14f2a 100644 --- a/scenes/bacilli_on_agar.3.py +++ b/scenes/bacilli_on_agar.3.py @@ -1,7 +1,8 @@ # -# Very simple flip without level set -# and without any particle resampling +# Bacilli on Agar # +# + from manta import * # solver params @@ -26,7 +27,7 @@ pp = s.create(BasicParticleSystem) # add velocity data to particles pVel = pp.create(PdataVec3) -mesh = s.create(Mesh) +mesh = s.create(Mesh) # scene setup flags.initDomain(boundaryWidth=0) @@ -65,15 +66,7 @@ # There's no resamplig here, so we need _LOTS_ of particles... sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) -indices = [] - -for index in range(pp.pySize()): - inSolid = isParticleInSolid(index=index, particles=pp, flags=flags) - - if inSolid: - indices.append(index) - -# print(indices) +setStatusOfParticlesInSolid(particles=pp, flags=flags) if (GUI): gui = Gui() @@ -110,11 +103,8 @@ mapPartsToMAC(vel=vel, flags=flags, velOld=velOld, parts=pp, partVel=pVel, weight=tmpVec3 ) extrapolateMACFromWeight( vel=vel , distance=2, weight=tmpVec3 ) markFluidCells(parts=pp, flags=flags) - clearSolidFlags(flags = flags) + markSolidCells(particles=pp, flags=flags) - for index in indices: - markCellSolid(index=index, particles=pp, flags=flags) - addGravity(flags=flags, vel=vel, gravity=(0,-0.002,0)) # pressure solve diff --git a/source/particle.h b/source/particle.h index ba484f5a..5ff39b7b 100644 --- a/source/particle.h +++ b/source/particle.h @@ -38,6 +38,7 @@ PYTHON() class ParticleBase : public PbClass { PBUBBLE = (1<<2), PFOAM = (1<<3), PTRACER = (1<<4), + PSOLID = (1<<5), PDELETE = (1<<10), // mark as deleted, will be deleted in next compress() step PINVALID = (1<<30), // unused }; @@ -124,6 +125,7 @@ PYTHON() template class ParticleSystem : public ParticleBase { inline bool isBubble(IndexInt idx) const { DEBUG_ONLY(checkPartIndex(idx)); return (mData[idx].flag & PBUBBLE); } inline bool isFoam(IndexInt idx) const { DEBUG_ONLY(checkPartIndex(idx)); return (mData[idx].flag & PFOAM); } inline bool isTracer(IndexInt idx) const { DEBUG_ONLY(checkPartIndex(idx)); return (mData[idx].flag & PTRACER); } + inline bool isSolid(IndexInt idx) const { DEBUG_ONLY(checkPartIndex(idx)); return (mData[idx].flag & PSOLID); } //! update status inline void setStatus(IndexInt idx, const int status) { DEBUG_ONLY(checkPartIndex(idx)); mData[idx].flag = status; } diff --git a/source/plugin/flip.cpp b/source/plugin/flip.cpp index 837037fe..51bb24df 100644 --- a/source/plugin/flip.cpp +++ b/source/plugin/flip.cpp @@ -207,83 +207,11 @@ PYTHON() void markFluidCells(const BasicParticleSystem& parts, FlagGrid& flags, } } -// KERNEL() void knClearFluidSolidFlags(FlagGrid& flags, int dummy=0) { -// if (flags.isFluid(i,j,k)) { -// flags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeEmpty) & ~FlagGrid::TypeFluid); -// } - -// if (flags.isSolid(i,j,k)) { -// flags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeEmpty) & ~FlagGrid::TypeSolid; -// } -// } - -// PYTHON() void markFluidSolidCells(const BasicParticleSystem& parts, FlagGrid& flags, const Grid* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { -// // remove all fluid and solid cells -// knClearFluidSolidFlags(flags, 0); - -// // mark all particles in flaggrid as fluid -// // for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { -// // remove all solid cells -// knClearSolidFlags(flags, 0); - -// // Mark particles in a solid as solid in the flaggrid -// for(IndexInt idx=0; idx* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { - Vec3i p = toVec3i(particles.getPos(index)); - flags(p) = FlagGrid::TypeSolid; -} - // for testing purposes only... PYTHON() void testInitGridWithPos(Grid& grid) { FOR_IJK(grid) { grid(i,j,k) = norm( Vec3(i,j,k) ); } } - - //! helper to calculate particle radius factor to cover the diagonal of a cell in 2d/3d inline Real calculateRadiusFactor(const Grid& grid, Real factor) { return (grid.is3D() ? sqrt(3.) : sqrt(2.) ) * (factor+.01); // note, a 1% safety factor is added here diff --git a/source/plugin/pbd.cpp b/source/plugin/pbd.cpp index f49515f8..d04597d9 100644 --- a/source/plugin/pbd.cpp +++ b/source/plugin/pbd.cpp @@ -72,19 +72,60 @@ namespace Manta { KnUpdateFlagsSolid(flags, fractions, phiSolid, phiOut, phiIn, boundaryWidth); } - PYTHON() bool isParticleInSolid(const int index, const BasicParticleSystem& particles, FlagGrid& flags) { - bool inSolid; + PYTHON() void setStatusOfParticlesInSolid(BasicParticleSystem& particles, const FlagGrid& flags) { - Vec3i position = toVec3i(particles.getPos(index)); - - if (flags.isSolid(position)) - inSolid = true; - else - inSolid = false; + for(IndexInt index=0; index < particles.size(); index++) { + Vec3i position = toVec3i(particles.getPos(index)); + + if (flags.isSolid(position)) + particles.setStatus(index, particles.PSOLID); + } + } + + KERNEL() void knClearSolidFlags(FlagGrid& flags, int dummy=0) { + if (flags.isSolid(i,j,k)) { + flags(i,j,k) = (flags(i,j,k) | FlagGrid::TypeEmpty) & ~FlagGrid::TypeSolid; + } + } - return inSolid; + PYTHON() void markSolidCells(const BasicParticleSystem& particles, FlagGrid& flags, const Grid* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { + // remove all solid cells + knClearSolidFlags(flags, 0); + + // Mark particles in a solid as solid in the flaggrid + for(IndexInt index = 0; index < particles.size(); index++) { + if (!particles.isActive(index) || (ptype && ((*ptype)[index] & exclude))) continue; + + Vec3i position = toVec3i(particles.getPos(index)); + + if (particles.isSolid(index) && flags.isInBounds(position)) + flags(position) = FlagGrid::TypeSolid; + } } + // PYTHON() bool isParticleInSolid(const int index, const BasicParticleSystem& particles, FlagGrid& flags) { + // bool inSolid; + + // Vec3i position = toVec3i(particles.getPos(index)); + + // if (flags.isSolid(position)) + // inSolid = true; + // else + // inSolid = false; + + // return inSolid; + // } + + // PYTHON() void clearSolidFlags(FlagGrid& flags, int dummy = 0) { + // // remove all solid cells + // knClearSolidFlags(flags, 0); + // } + + // PYTHON() void markCellSolid(const int index, const BasicParticleSystem& particles, FlagGrid& flags, const Grid* phiObs=NULL, const ParticleDataImpl* ptype=NULL, const int exclude=0) { + // Vec3i p = toVec3i(particles.getPos(index)); + // flags(p) = FlagGrid::TypeSolid; + // } + // Update solid flags from levelsets // PYTHON() void setSolidFlags(FlagGrid& flags, const Grid& phiSolid, int boundaryWidth=1) { // knUpdateFlagsSolid(flags, phiSolid, boundaryWidth); diff --git a/source/python/defines.py b/source/python/defines.py index ec4299e9..d93eccda 100644 --- a/source/python/defines.py +++ b/source/python/defines.py @@ -28,6 +28,7 @@ FlagInflow = 8 FlagOutflow = 16 FlagStick = 64 +FlagSolid = 128 FlagReserved = 256 # and same for FlagGrid::CellType enum names: TypeFluid = 1 @@ -36,6 +37,7 @@ TypeInflow = 8 TypeOutflow = 16 TypeStick = 64 +TypeSolid = 128 TypeReserved = 256 # integration mode From e97f451499b2e55de435f0e5409ba05ae5137540 Mon Sep 17 00:00:00 2001 From: "Cesar A. Rodriguez" Date: Wed, 21 Oct 2020 18:31:27 -0400 Subject: [PATCH 15/15] Renamed pbd.cpp to solids.cpp. Added code to the setWallBcs function for handling solids. Working through the solvePressure function to have it work with solids. --- CMakeLists.txt | 2 +- scenes/bacilli_on_agar.3.py | 6 +-- source/plugin/extforces.cpp | 60 +++++++++++++++++++---- source/plugin/pressure.cpp | 68 ++++++++++++++++++++++++++- source/plugin/{pbd.cpp => solids.cpp} | 0 5 files changed, 120 insertions(+), 16 deletions(-) rename source/plugin/{pbd.cpp => solids.cpp} (100%) diff --git a/CMakeLists.txt b/CMakeLists.txt index 0a11aecd..c3c8794f 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -214,7 +214,7 @@ set(PP_SOURCES source/plugin/vortexplugins.cpp source/plugin/waveletturbulence.cpp source/plugin/waves.cpp - source/plugin/pbd.cpp + source/plugin/solids.cpp source/python/defines.py source/test.cpp ) diff --git a/scenes/bacilli_on_agar.3.py b/scenes/bacilli_on_agar.3.py index bae14f2a..a8271814 100644 --- a/scenes/bacilli_on_agar.3.py +++ b/scenes/bacilli_on_agar.3.py @@ -63,7 +63,7 @@ # Set the flags to fluid for the agar and cylinder flags.updateFromLevelset(phi) -# There's no resamplig here, so we need _LOTS_ of particles... +# There's no resampling here, so we need _LOTS_ of particles... sampleFlagsWithParticles(flags=flags, parts=pp, discretization=particleNumber, randomness=0.2) setStatusOfParticlesInSolid(particles=pp, flags=flags) @@ -108,9 +108,9 @@ addGravity(flags=flags, vel=vel, gravity=(0,-0.002,0)) # pressure solve - setWallBcs(flags=flags, vel=vel) + # setWallBcs(flags=flags, vel=vel) solvePressure(flags=flags, vel=vel, pressure=pressure) - setWallBcs(flags=flags, vel=vel) + # setWallBcs(flags=flags, vel=vel) # we dont have any levelset, ie no extrapolation, so make sure the velocities are valid extrapolateMACSimple(flags=flags, vel=vel) diff --git a/source/plugin/extforces.cpp b/source/plugin/extforces.cpp index 9fbe11d9..92e9821e 100644 --- a/source/plugin/extforces.cpp +++ b/source/plugin/extforces.cpp @@ -218,9 +218,11 @@ PYTHON() void setInflowBcs(MACGrid& vel, string dir, Vec3 value) { KERNEL() void KnSetWallBcs(const FlagGrid& flags, MACGrid& vel, const MACGrid* obvel) { bool curFluid = flags.isFluid(i,j,k); + bool curSolid = flags.isSolid(i,j,k); bool curObs = flags.isObstacle(i,j,k); Vec3 bcsVel(0.,0.,0.); - if (!curFluid && !curObs) return; + + if (!curFluid && !curSolid && !curObs) return; if (obvel) { bcsVel.x = (*obvel)(i,j,k).x; @@ -229,16 +231,21 @@ KERNEL() void KnSetWallBcs(const FlagGrid& flags, MACGrid& vel, const MACGrid* o } // we use i>0 instead of bnd=1 to check outer wall - if (i>0 && flags.isObstacle(i-1,j,k)) vel(i,j,k).x = bcsVel.x; - if (i>0 && curObs && flags.isFluid(i-1,j,k)) vel(i,j,k).x = bcsVel.x; - if (j>0 && flags.isObstacle(i,j-1,k)) vel(i,j,k).y = bcsVel.y; - if (j>0 && curObs && flags.isFluid(i,j-1,k)) vel(i,j,k).y = bcsVel.y; - - if(!vel.is3D()) { vel(i,j,k).z = 0; } else { - if (k>0 && flags.isObstacle(i,j,k-1)) vel(i,j,k).z = bcsVel.z; - if (k>0 && curObs && flags.isFluid(i,j,k-1)) vel(i,j,k).z = bcsVel.z; } + if (i > 0 && flags.isObstacle(i-1,j,k)) vel(i,j,k).x = bcsVel.x; + if (i > 0 && curObs && flags.isFluid(i-1,j,k)) vel(i,j,k).x = bcsVel.x; + if (i > 0 && curObs && flags.isSolid(i-1,j,k)) vel(i,j,k).x = bcsVel.x; + if (j > 0 && flags.isObstacle(i,j-1,k)) vel(i,j,k).y = bcsVel.y; + if (j > 0 && curObs && flags.isFluid(i,j-1,k)) vel(i,j,k).y = bcsVel.y; + if (j > 0 && curObs && flags.isSolid(i,j-1,k)) vel(i,j,k).y = bcsVel.y; + + if(!vel.is3D()) {vel(i,j,k).z = 0;} + else { + if (k > 0 && flags.isObstacle(i,j,k-1)) vel(i,j,k).z = bcsVel.z; + if (k > 0 && curObs && flags.isFluid(i,j,k-1)) vel(i,j,k).z = bcsVel.z; + if (k > 0 && curObs && flags.isSolid(i,j,k-1)) vel(i,j,k).z = bcsVel.z; + } - if (curFluid) { + if (curFluid || curSolid) { if ((i>0 && flags.isStick(i-1,j,k)) || (i0 && flags.isStick(i,j-1,k)) || (j0 instead of bnd=1 to check outer wall +// if (i>0 && flags.isObstacle(i-1,j,k)) vel(i,j,k).x = bcsVel.x; +// if (i>0 && curObs && flags.isFluid(i-1,j,k)) vel(i,j,k).x = bcsVel.x; +// if (j>0 && flags.isObstacle(i,j-1,k)) vel(i,j,k).y = bcsVel.y; +// if (j>0 && curObs && flags.isFluid(i,j-1,k)) vel(i,j,k).y = bcsVel.y; + +// if(!vel.is3D()) { vel(i,j,k).z = 0; } else { +// if (k>0 && flags.isObstacle(i,j,k-1)) vel(i,j,k).z = bcsVel.z; +// if (k>0 && curObs && flags.isFluid(i,j,k-1)) vel(i,j,k).z = bcsVel.z; } + +// if (curFluid) { +// if ((i>0 && flags.isStick(i-1,j,k)) || (i0 && flags.isStick(i,j-1,k)) || (j0 && flags.isStick(i,j,k-1)) || (k* phiObs, const int &boundaryWidth=0) diff --git a/source/plugin/pressure.cpp b/source/plugin/pressure.cpp index 63a8201b..47243f53 100644 --- a/source/plugin/pressure.cpp +++ b/source/plugin/pressure.cpp @@ -106,8 +106,71 @@ void knCorrectVelocity(const FlagGrid& flags, MACGrid& vel, const Grid& pr else vel[idx].z = 0.f; } } + + if(flags.isSolid(idx)) { + if( flags.isSolid(i-1,j,k)) vel[idx].x -= (pressure[idx] - pressure(i-1,j,k)); + if( flags.isSolid(i,j-1,k)) vel[idx].y -= (pressure[idx] - pressure(i,j-1,k)); + if(flags.is3D() && flags.isSolid(i,j,k-1)) vel[idx].z -= (pressure[idx] - pressure(i,j,k-1)); + + if( flags.isEmpty(i-1,j,k)) vel[idx].x -= pressure[idx]; + if( flags.isEmpty(i,j-1,k)) vel[idx].y -= pressure[idx]; + if(flags.is3D() && flags.isEmpty(i,j,k-1)) vel[idx].z -= pressure[idx]; + } else if(flags.isEmpty(idx)&&!flags.isOutflow(idx)) { // don't change velocities in outflow cells + if(flags.isSolid(i-1,j,k)) vel[idx].x += pressure(i-1,j,k); + else vel[idx].x = 0.f; + if(flags.isSolid(i,j-1,k)) vel[idx].y += pressure(i,j-1,k); + else vel[idx].y = 0.f; + if(flags.is3D()) { + if(flags.isSolid(i,j,k-1)) vel[idx].z += pressure(i,j,k-1); + else vel[idx].z = 0.f; + } + } } +// KERNEL(bnd = 1) +// void knCorrectVelocity(const FlagGrid& flags, MACGrid& vel, const Grid& pressure) +// { +// const IndexInt idx = flags.index(i,j,k); +// if(flags.isFluid(idx)) { +// if( flags.isFluid(i-1,j,k)) vel[idx].x -= (pressure[idx] - pressure(i-1,j,k)); +// if( flags.isFluid(i,j-1,k)) vel[idx].y -= (pressure[idx] - pressure(i,j-1,k)); +// if(flags.is3D() && flags.isFluid(i,j,k-1)) vel[idx].z -= (pressure[idx] - pressure(i,j,k-1)); + +// if( flags.isEmpty(i-1,j,k)) vel[idx].x -= pressure[idx]; +// if( flags.isEmpty(i,j-1,k)) vel[idx].y -= pressure[idx]; +// if(flags.is3D() && flags.isEmpty(i,j,k-1)) vel[idx].z -= pressure[idx]; +// } else if(flags.isEmpty(idx)&&!flags.isOutflow(idx)) { // don't change velocities in outflow cells +// if(flags.isFluid(i-1,j,k)) vel[idx].x += pressure(i-1,j,k); +// else vel[idx].x = 0.f; +// if(flags.isFluid(i,j-1,k)) vel[idx].y += pressure(i,j-1,k); +// else vel[idx].y = 0.f; +// if(flags.is3D()) { +// if(flags.isFluid(i,j,k-1)) vel[idx].z += pressure(i,j,k-1); +// else vel[idx].z = 0.f; +// } +// } + +// if(flags.isSolid(idx)) { +// if( flags.isSolid(i-1,j,k)) vel[idx].x -= (pressure[idx] - pressure(i-1,j,k)); +// if( flags.isSolid(i,j-1,k)) vel[idx].y -= (pressure[idx] - pressure(i,j-1,k)); +// if(flags.is3D() && flags.isSolid(i,j,k-1)) vel[idx].z -= (pressure[idx] - pressure(i,j,k-1)); + +// if( flags.isEmpty(i-1,j,k)) vel[idx].x -= pressure[idx]; +// if( flags.isEmpty(i,j-1,k)) vel[idx].y -= pressure[idx]; +// if(flags.is3D() && flags.isEmpty(i,j,k-1)) vel[idx].z -= pressure[idx]; +// } else if(flags.isEmpty(idx)&&!flags.isOutflow(idx)) { // don't change velocities in outflow cells +// if(flags.isSolid(i-1,j,k)) vel[idx].x += pressure(i-1,j,k); +// else vel[idx].x = 0.f; +// if(flags.isSolid(i,j-1,k)) vel[idx].y += pressure(i,j-1,k); +// else vel[idx].y = 0.f; +// if(flags.is3D()) { +// if(flags.isSolid(i,j,k-1)) vel[idx].z += pressure(i,j,k-1); +// else vel[idx].z = 0.f; +// } +// } +// } + + // ***************************************************************************** // Ghost fluid helpers @@ -360,7 +423,7 @@ PYTHON() void solvePressureSystem( topCenter - Vec3i(0,2,0) }; for (Vec3i pos : preferredPos) { - if(flags.isFluid(pos)) { + if(flags.isFluid(pos) || flags.isSolid(pos)) { fixPidx = flags.index(pos); break; } @@ -369,7 +432,7 @@ PYTHON() void solvePressureSystem( // 2) Then search whole domain if(fixPidx == -1) { FOR_IJK_BND(flags,1) { - if(flags.isFluid(i,j,k)) { + if(flags.isFluid(i,j,k) || flags.isSolid(i,j,k)) { fixPidx = flags.index(i,j,k); // break FOR_IJK_BND loop i = flags.getSizeX()-1; @@ -468,6 +531,7 @@ PYTHON() void correctVelocity( const Real surfTens = 0.) { knCorrectVelocity(flags, vel, pressure); + if(phi) { knCorrectVelocityGhostFluid(vel, flags, pressure, *phi, gfClamp, curv, surfTens); // improve behavior of clamping for large time steps: diff --git a/source/plugin/pbd.cpp b/source/plugin/solids.cpp similarity index 100% rename from source/plugin/pbd.cpp rename to source/plugin/solids.cpp