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webxr_vr_handinput_pointerdrag.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js ve - handinput - point and drag</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> vr - handinput - point and drag<br />
(Oculus Browser 15.1+)
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { VRButton } from 'three/addons/webxr/VRButton.js';
import { XRControllerModelFactory } from 'three/addons/webxr/XRControllerModelFactory.js';
import { OculusHandModel } from 'three/addons/webxr/OculusHandModel.js';
import { OculusHandPointerModel } from 'three/addons/webxr/OculusHandPointerModel.js';
import { createText } from 'three/addons/webxr/Text2D.js';
import { World, System, Component, TagComponent, Types } from 'three/addons/libs/ecsy.module.js';
class Object3D extends Component { }
Object3D.schema = {
object: { type: Types.Ref }
};
class Button extends Component { }
Button.schema = {
// button states: [none, hovered, pressed]
currState: { type: Types.String, default: 'none' },
prevState: { type: Types.String, default: 'none' },
action: { type: Types.Ref, default: () => { } }
};
class ButtonSystem extends System {
execute( /*delta, time*/ ) {
this.queries.buttons.results.forEach( entity => {
const button = entity.getMutableComponent( Button );
const buttonMesh = entity.getComponent( Object3D ).object;
if ( button.currState == 'none' ) {
buttonMesh.scale.set( 1, 1, 1 );
} else {
buttonMesh.scale.set( 1.1, 1.1, 1.1 );
}
if ( button.currState == 'pressed' && button.prevState != 'pressed' ) {
button.action();
}
// preserve prevState, clear currState
// HandRaySystem will update currState
button.prevState = button.currState;
button.currState = 'none';
} );
}
}
ButtonSystem.queries = {
buttons: {
components: [ Button ]
}
};
class Draggable extends Component { }
Draggable.schema = {
// draggable states: [detached, hovered, to-be-attached, attached, to-be-detached]
state: { type: Types.String, default: 'none' },
originalParent: { type: Types.Ref, default: null },
attachedPointer: { type: Types.Ref, default: null }
};
class DraggableSystem extends System {
execute( /*delta, time*/ ) {
this.queries.draggable.results.forEach( entity => {
const draggable = entity.getMutableComponent( Draggable );
const object = entity.getComponent( Object3D ).object;
if ( draggable.originalParent == null ) {
draggable.originalParent = object.parent;
}
switch ( draggable.state ) {
case 'to-be-attached':
draggable.attachedPointer.children[ 0 ].attach( object );
draggable.state = 'attached';
break;
case 'to-be-detached':
draggable.originalParent.attach( object );
draggable.state = 'detached';
break;
default:
object.scale.set( 1, 1, 1 );
}
} );
}
}
DraggableSystem.queries = {
draggable: {
components: [ Draggable ]
}
};
class Intersectable extends TagComponent { }
class HandRaySystem extends System {
init( attributes ) {
this.handPointers = attributes.handPointers;
}
execute( /*delta, time*/ ) {
this.handPointers.forEach( hp => {
let distance = null;
let intersectingEntity = null;
this.queries.intersectable.results.forEach( entity => {
const object = entity.getComponent( Object3D ).object;
const intersections = hp.intersectObject( object, false );
if ( intersections && intersections.length > 0 ) {
if ( distance == null || intersections[ 0 ].distance < distance ) {
distance = intersections[ 0 ].distance;
intersectingEntity = entity;
}
}
} );
if ( distance ) {
hp.setCursor( distance );
if ( intersectingEntity.hasComponent( Button ) ) {
const button = intersectingEntity.getMutableComponent( Button );
if ( hp.isPinched() ) {
button.currState = 'pressed';
} else if ( button.currState != 'pressed' ) {
button.currState = 'hovered';
}
}
if ( intersectingEntity.hasComponent( Draggable ) ) {
const draggable = intersectingEntity.getMutableComponent( Draggable );
const object = intersectingEntity.getComponent( Object3D ).object;
object.scale.set( 1.1, 1.1, 1.1 );
if ( hp.isPinched() ) {
if ( ! hp.isAttached() && draggable.state != 'attached' ) {
draggable.state = 'to-be-attached';
draggable.attachedPointer = hp;
hp.setAttached( true );
}
} else {
if ( hp.isAttached() && draggable.state == 'attached' ) {
console.log( 'hello' );
draggable.state = 'to-be-detached';
draggable.attachedPointer = null;
hp.setAttached( false );
}
}
}
} else {
hp.setCursor( 1.5 );
}
} );
}
}
HandRaySystem.queries = {
intersectable: {
components: [ Intersectable ]
}
};
class HandsInstructionText extends TagComponent { }
class InstructionSystem extends System {
init( attributes ) {
this.controllers = attributes.controllers;
}
execute( /*delta, time*/ ) {
let visible = false;
this.controllers.forEach( controller => {
if ( controller.visible ) {
visible = true;
}
} );
this.queries.instructionTexts.results.forEach( entity => {
const object = entity.getComponent( Object3D ).object;
object.visible = visible;
} );
}
}
InstructionSystem.queries = {
instructionTexts: {
components: [ HandsInstructionText ]
}
};
class OffsetFromCamera extends Component { }
OffsetFromCamera.schema = {
x: { type: Types.Number, default: 0 },
y: { type: Types.Number, default: 0 },
z: { type: Types.Number, default: 0 },
};
class NeedCalibration extends TagComponent { }
class CalibrationSystem extends System {
init( attributes ) {
this.camera = attributes.camera;
this.renderer = attributes.renderer;
}
execute( /*delta, time*/ ) {
this.queries.needCalibration.results.forEach( entity => {
if ( this.renderer.xr.getSession() ) {
const offset = entity.getComponent( OffsetFromCamera );
const object = entity.getComponent( Object3D ).object;
const xrCamera = this.renderer.xr.getCamera();
object.position.x = xrCamera.position.x + offset.x;
object.position.y = xrCamera.position.y + offset.y;
object.position.z = xrCamera.position.z + offset.z;
entity.removeComponent( NeedCalibration );
}
} );
}
}
CalibrationSystem.queries = {
needCalibration: {
components: [ NeedCalibration ]
}
};
class Randomizable extends TagComponent { }
class RandomizerSystem extends System {
init( /*attributes*/ ) {
this.needRandomizing = true;
}
execute( /*delta, time*/ ) {
if ( ! this.needRandomizing ) {
return;
}
this.queries.randomizable.results.forEach( entity => {
const object = entity.getComponent( Object3D ).object;
object.material.color.setHex( Math.random() * 0xffffff );
object.position.x = Math.random() * 2 - 1;
object.position.y = Math.random() * 2;
object.position.z = Math.random() * 2 - 1;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.x = Math.random() + 0.5;
object.scale.y = Math.random() + 0.5;
object.scale.z = Math.random() + 0.5;
this.needRandomizing = false;
} );
}
}
RandomizerSystem.queries = {
randomizable: {
components: [ Randomizable ]
}
};
const world = new World();
const clock = new THREE.Clock();
let camera, scene, renderer;
init();
animate();
function makeButtonMesh( x, y, z, color ) {
const geometry = new THREE.BoxGeometry( x, y, z );
const material = new THREE.MeshPhongMaterial( { color: color } );
const buttonMesh = new THREE.Mesh( geometry, material );
return buttonMesh;
}
function init() {
const container = document.createElement( 'div' );
document.body.appendChild( container );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x444444 );
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 10 );
camera.position.set( 0, 1.2, 0.3 );
scene.add( new THREE.HemisphereLight( 0x808080, 0x606060 ) );
const light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 0, 6, 0 );
light.castShadow = true;
light.shadow.camera.top = 2;
light.shadow.camera.bottom = - 2;
light.shadow.camera.right = 2;
light.shadow.camera.left = - 2;
light.shadow.mapSize.set( 4096, 4096 );
scene.add( light );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.outputEncoding = THREE.sRGBEncoding;
renderer.shadowMap.enabled = true;
renderer.xr.enabled = true;
renderer.xr.cameraAutoUpdate = false;
container.appendChild( renderer.domElement );
document.body.appendChild( VRButton.createButton( renderer ) );
// controllers
const controller1 = renderer.xr.getController( 0 );
scene.add( controller1 );
const controller2 = renderer.xr.getController( 1 );
scene.add( controller2 );
const controllerModelFactory = new XRControllerModelFactory();
// Hand 1
const controllerGrip1 = renderer.xr.getControllerGrip( 0 );
controllerGrip1.add( controllerModelFactory.createControllerModel( controllerGrip1 ) );
scene.add( controllerGrip1 );
const hand1 = renderer.xr.getHand( 0 );
hand1.add( new OculusHandModel( hand1 ) );
const handPointer1 = new OculusHandPointerModel( hand1, controller1 );
hand1.add( handPointer1 );
scene.add( hand1 );
// Hand 2
const controllerGrip2 = renderer.xr.getControllerGrip( 1 );
controllerGrip2.add( controllerModelFactory.createControllerModel( controllerGrip2 ) );
scene.add( controllerGrip2 );
const hand2 = renderer.xr.getHand( 1 );
hand2.add( new OculusHandModel( hand2 ) );
const handPointer2 = new OculusHandPointerModel( hand2, controller2 );
hand2.add( handPointer2 );
scene.add( hand2 );
// setup objects in scene and entities
const floorGeometry = new THREE.PlaneGeometry( 4, 4 );
const floorMaterial = new THREE.MeshPhongMaterial( { color: 0x222222 } );
const floor = new THREE.Mesh( floorGeometry, floorMaterial );
floor.rotation.x = - Math.PI / 2;
floor.receiveShadow = true;
scene.add( floor );
const menuGeometry = new THREE.PlaneGeometry( 0.24, 0.5 );
const menuMaterial = new THREE.MeshPhongMaterial( {
opacity: 0,
transparent: true,
} );
const menuMesh = new THREE.Mesh( menuGeometry, menuMaterial );
menuMesh.position.set( 0.4, 1, - 1 );
menuMesh.rotation.y = - Math.PI / 12;
scene.add( menuMesh );
const resetButton = makeButtonMesh( 0.2, 0.1, 0.01, 0x355c7d );
const resetButtonText = createText( 'reset', 0.06 );
resetButton.add( resetButtonText );
resetButtonText.position.set( 0, 0, 0.0051 );
resetButton.position.set( 0, - 0.06, 0 );
menuMesh.add( resetButton );
const exitButton = makeButtonMesh( 0.2, 0.1, 0.01, 0xff0000 );
const exitButtonText = createText( 'exit', 0.06 );
exitButton.add( exitButtonText );
exitButtonText.position.set( 0, 0, 0.0051 );
exitButton.position.set( 0, - 0.18, 0 );
menuMesh.add( exitButton );
const instructionText = createText( 'This is a WebXR Hands demo, please explore with hands.', 0.04 );
instructionText.position.set( 0, 1.6, - 0.6 );
scene.add( instructionText );
const exitText = createText( 'Exiting session...', 0.04 );
exitText.position.set( 0, 1.5, - 0.6 );
exitText.visible = false;
scene.add( exitText );
world
.registerComponent( Object3D )
.registerComponent( Button )
.registerComponent( Intersectable )
.registerComponent( HandsInstructionText )
.registerComponent( OffsetFromCamera )
.registerComponent( NeedCalibration )
.registerComponent( Randomizable )
.registerComponent( Draggable );
world
.registerSystem( RandomizerSystem )
.registerSystem( InstructionSystem, { controllers: [ controllerGrip1, controllerGrip2 ] } )
.registerSystem( CalibrationSystem, { renderer: renderer, camera: camera } )
.registerSystem( ButtonSystem )
.registerSystem( DraggableSystem )
.registerSystem( HandRaySystem, { handPointers: [ handPointer1, handPointer2 ] } );
for ( let i = 0; i < 20; i ++ ) {
const object = new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.15 ), new THREE.MeshLambertMaterial( { color: 0xffffff } ) );
scene.add( object );
const entity = world.createEntity();
entity.addComponent( Intersectable );
entity.addComponent( Randomizable );
entity.addComponent( Object3D, { object: object } );
entity.addComponent( Draggable );
}
const menuEntity = world.createEntity();
menuEntity.addComponent( Intersectable );
menuEntity.addComponent( OffsetFromCamera, { x: 0.4, y: 0, z: - 1 } );
menuEntity.addComponent( NeedCalibration );
menuEntity.addComponent( Object3D, { object: menuMesh } );
const rbEntity = world.createEntity();
rbEntity.addComponent( Intersectable );
rbEntity.addComponent( Object3D, { object: resetButton } );
const rbAction = function () {
world.getSystem( RandomizerSystem ).needRandomizing = true;
};
rbEntity.addComponent( Button, { action: rbAction } );
const ebEntity = world.createEntity();
ebEntity.addComponent( Intersectable );
ebEntity.addComponent( Object3D, { object: exitButton } );
const ebAction = function () {
exitText.visible = true;
setTimeout( function () {
exitText.visible = false; renderer.xr.getSession().end();
}, 2000 );
};
ebEntity.addComponent( Button, { action: ebAction } );
const itEntity = world.createEntity();
itEntity.addComponent( HandsInstructionText );
itEntity.addComponent( Object3D, { object: instructionText } );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
renderer.setAnimationLoop( render );
}
function render() {
const delta = clock.getDelta();
const elapsedTime = clock.elapsedTime;
renderer.xr.updateCamera( camera );
world.execute( delta, elapsedTime );
renderer.render( scene, camera );
}
</script>
</body>
</html>