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233 lines
6.1 KiB
233 lines
6.1 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - ShadowMapViewer example </title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - ShadowMapViewer example by <a href="https://github.com/arya-s">arya-s</a>
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</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { ShadowMapViewer } from 'three/addons/utils/ShadowMapViewer.js';
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let camera, scene, renderer, clock, stats;
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let dirLight, spotLight;
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let torusKnot, cube;
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let dirLightShadowMapViewer, spotLightShadowMapViewer;
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init();
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animate();
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function init() {
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initScene();
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initShadowMapViewers();
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initMisc();
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document.body.appendChild( renderer.domElement );
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window.addEventListener( 'resize', onWindowResize );
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}
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function initScene() {
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 0, 15, 35 );
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scene = new THREE.Scene();
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// Lights
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scene.add( new THREE.AmbientLight( 0x404040 ) );
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spotLight = new THREE.SpotLight( 0xffffff );
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spotLight.name = 'Spot Light';
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spotLight.angle = Math.PI / 5;
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spotLight.penumbra = 0.3;
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spotLight.position.set( 10, 10, 5 );
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spotLight.castShadow = true;
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spotLight.shadow.camera.near = 8;
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spotLight.shadow.camera.far = 30;
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spotLight.shadow.mapSize.width = 1024;
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spotLight.shadow.mapSize.height = 1024;
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scene.add( spotLight );
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scene.add( new THREE.CameraHelper( spotLight.shadow.camera ) );
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dirLight = new THREE.DirectionalLight( 0xffffff, 1 );
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dirLight.name = 'Dir. Light';
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dirLight.position.set( 0, 10, 0 );
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dirLight.castShadow = true;
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dirLight.shadow.camera.near = 1;
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dirLight.shadow.camera.far = 10;
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dirLight.shadow.camera.right = 15;
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dirLight.shadow.camera.left = - 15;
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dirLight.shadow.camera.top = 15;
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dirLight.shadow.camera.bottom = - 15;
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dirLight.shadow.mapSize.width = 1024;
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dirLight.shadow.mapSize.height = 1024;
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scene.add( dirLight );
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scene.add( new THREE.CameraHelper( dirLight.shadow.camera ) );
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// Geometry
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let geometry = new THREE.TorusKnotGeometry( 25, 8, 75, 20 );
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let material = new THREE.MeshPhongMaterial( {
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color: 0xff0000,
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shininess: 150,
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specular: 0x222222
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} );
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torusKnot = new THREE.Mesh( geometry, material );
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torusKnot.scale.multiplyScalar( 1 / 18 );
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torusKnot.position.y = 3;
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torusKnot.castShadow = true;
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torusKnot.receiveShadow = true;
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scene.add( torusKnot );
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geometry = new THREE.BoxGeometry( 3, 3, 3 );
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cube = new THREE.Mesh( geometry, material );
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cube.position.set( 8, 3, 8 );
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cube.castShadow = true;
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cube.receiveShadow = true;
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scene.add( cube );
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geometry = new THREE.BoxGeometry( 10, 0.15, 10 );
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material = new THREE.MeshPhongMaterial( {
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color: 0xa0adaf,
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shininess: 150,
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specular: 0x111111
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} );
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const ground = new THREE.Mesh( geometry, material );
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ground.scale.multiplyScalar( 3 );
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ground.castShadow = false;
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ground.receiveShadow = true;
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scene.add( ground );
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}
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function initShadowMapViewers() {
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dirLightShadowMapViewer = new ShadowMapViewer( dirLight );
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spotLightShadowMapViewer = new ShadowMapViewer( spotLight );
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resizeShadowMapViewers();
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}
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function initMisc() {
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.BasicShadowMap;
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// Mouse control
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.target.set( 0, 2, 0 );
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controls.update();
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clock = new THREE.Clock();
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stats = new Stats();
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document.body.appendChild( stats.dom );
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}
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function resizeShadowMapViewers() {
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const size = window.innerWidth * 0.15;
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dirLightShadowMapViewer.position.x = 10;
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dirLightShadowMapViewer.position.y = 10;
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dirLightShadowMapViewer.size.width = size;
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dirLightShadowMapViewer.size.height = size;
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dirLightShadowMapViewer.update(); //Required when setting position or size directly
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spotLightShadowMapViewer.size.set( size, size );
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spotLightShadowMapViewer.position.set( size + 20, 10 );
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// spotLightShadowMapViewer.update(); //NOT required because .set updates automatically
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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resizeShadowMapViewers();
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dirLightShadowMapViewer.updateForWindowResize();
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spotLightShadowMapViewer.updateForWindowResize();
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}
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function renderScene() {
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renderer.render( scene, camera );
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}
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function renderShadowMapViewers() {
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dirLightShadowMapViewer.render( renderer );
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spotLightShadowMapViewer.render( renderer );
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}
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function render() {
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const delta = clock.getDelta();
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renderScene();
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renderShadowMapViewers();
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torusKnot.rotation.x += 0.25 * delta;
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torusKnot.rotation.y += 2 * delta;
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torusKnot.rotation.z += 1 * delta;
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cube.rotation.x += 0.25 * delta;
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cube.rotation.y += 2 * delta;
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cube.rotation.z += 1 * delta;
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}
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</script>
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</body>
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</html>
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