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webgl_shadowmap_vsm.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - VSM Shadows example </title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<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> - VSM Shadows example by <a href="https://github.com/supereggbert">Paul Brunt</a>
</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 Stats from 'three/addons/libs/stats.module.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
let camera, scene, renderer, clock, stats;
let dirLight, spotLight;
let torusKnot, dirGroup;
init();
animate();
function init() {
initScene();
initMisc();
// Init gui
const gui = new GUI();
const config = {
spotlightRadius: 4,
spotlightSamples: 8,
dirlightRadius: 4,
dirlightSamples: 8
};
const spotlightFolder = gui.addFolder( 'Spotlight' );
spotlightFolder.add( config, 'spotlightRadius' ).name( 'radius' ).min( 0 ).max( 25 ).onChange( function ( value ) {
spotLight.shadow.radius = value;
} );
spotlightFolder.add( config, 'spotlightSamples', 1, 25, 1 ).name( 'samples' ).onChange( function ( value ) {
spotLight.shadow.blurSamples = value;
} );
spotlightFolder.open();
const dirlightFolder = gui.addFolder( 'Directional Light' );
dirlightFolder.add( config, 'dirlightRadius' ).name( 'radius' ).min( 0 ).max( 25 ).onChange( function ( value ) {
dirLight.shadow.radius = value;
} );
dirlightFolder.add( config, 'dirlightSamples', 1, 25, 1 ).name( 'samples' ).onChange( function ( value ) {
dirLight.shadow.blurSamples = value;
} );
dirlightFolder.open();
document.body.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize );
}
function initScene() {
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.set( 0, 10, 30 );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x222244 );
scene.fog = new THREE.Fog( 0x222244, 50, 100 );
// Lights
scene.add( new THREE.AmbientLight( 0x444444 ) );
spotLight = new THREE.SpotLight( 0xff8888 );
spotLight.angle = Math.PI / 5;
spotLight.penumbra = 0.3;
spotLight.position.set( 8, 10, 5 );
spotLight.castShadow = true;
spotLight.shadow.camera.near = 8;
spotLight.shadow.camera.far = 200;
spotLight.shadow.mapSize.width = 256;
spotLight.shadow.mapSize.height = 256;
spotLight.shadow.bias = - 0.002;
spotLight.shadow.radius = 4;
scene.add( spotLight );
dirLight = new THREE.DirectionalLight( 0x8888ff );
dirLight.position.set( 3, 12, 17 );
dirLight.castShadow = true;
dirLight.shadow.camera.near = 0.1;
dirLight.shadow.camera.far = 500;
dirLight.shadow.camera.right = 17;
dirLight.shadow.camera.left = - 17;
dirLight.shadow.camera.top = 17;
dirLight.shadow.camera.bottom = - 17;
dirLight.shadow.mapSize.width = 512;
dirLight.shadow.mapSize.height = 512;
dirLight.shadow.radius = 4;
dirLight.shadow.bias = - 0.0005;
dirGroup = new THREE.Group();
dirGroup.add( dirLight );
scene.add( dirGroup );
// Geometry
const geometry = new THREE.TorusKnotGeometry( 25, 8, 75, 20 );
const material = new THREE.MeshPhongMaterial( {
color: 0x999999,
shininess: 0,
specular: 0x222222
} );
torusKnot = new THREE.Mesh( geometry, material );
torusKnot.scale.multiplyScalar( 1 / 18 );
torusKnot.position.y = 3;
torusKnot.castShadow = true;
torusKnot.receiveShadow = true;
scene.add( torusKnot );
const cylinderGeometry = new THREE.CylinderGeometry( 0.75, 0.75, 7, 32 );
const pillar1 = new THREE.Mesh( cylinderGeometry, material );
pillar1.position.set( 8, 3.5, 8 );
pillar1.castShadow = true;
pillar1.receiveShadow = true;
const pillar2 = pillar1.clone();
pillar2.position.set( 8, 3.5, - 8 );
const pillar3 = pillar1.clone();
pillar3.position.set( - 8, 3.5, 8 );
const pillar4 = pillar1.clone();
pillar4.position.set( - 8, 3.5, - 8 );
scene.add( pillar1 );
scene.add( pillar2 );
scene.add( pillar3 );
scene.add( pillar4 );
const planeGeometry = new THREE.PlaneGeometry( 200, 200 );
const planeMaterial = new THREE.MeshPhongMaterial( {
color: 0x999999,
shininess: 0,
specular: 0x111111
} );
const ground = new THREE.Mesh( planeGeometry, planeMaterial );
ground.rotation.x = - Math.PI / 2;
ground.scale.multiplyScalar( 3 );
ground.castShadow = true;
ground.receiveShadow = true;
scene.add( ground );
}
function initMisc() {
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.VSMShadowMap;
// Mouse control
const controls = new OrbitControls( camera, renderer.domElement );
controls.target.set( 0, 2, 0 );
controls.update();
clock = new THREE.Clock();
stats = new Stats();
document.body.appendChild( stats.dom );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate( time ) {
requestAnimationFrame( animate );
const delta = clock.getDelta();
torusKnot.rotation.x += 0.25 * delta;
torusKnot.rotation.y += 0.5 * delta;
torusKnot.rotation.z += 1 * delta;
dirGroup.rotation.y += 0.7 * delta;
dirLight.position.z = 17 + Math.sin( time * 0.001 ) * 5;
renderer.render( scene, camera );
stats.update();
}
</script>
</body>
</html>