samien
/
three.js
peilaus alkaen https://github.com/mrdoob/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - dynamic lights</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<meta property="og:title" content="three.js webgpu - dynamic lights">
		<meta property="og:type" content="website">
		<meta property="og:url" content="https://threejs.org/examples/webgpu_lights_dynamic.html">
		<meta property="og:image" content="https://threejs.org/examples/screenshots/webgpu_lights_dynamic.jpg">
		<link type="text/css" rel="stylesheet" href="example.css">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org/" target="_blank" rel="noopener" class="logo-link"></a>

			<div class="title-wrapper">
				<a href="https://threejs.org/" target="_blank" rel="noopener">three.js</a><span>Dynamic Lights</span>
			</div>

			<small>
				Opt-in DynamicLighting avoids shader recompilation when adding/removing supported lights.<br />
				100 meshes with 50 unique PBR materials. Use the Inspector to explore the scene.
			</small>
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.webgpu.js",
					"three/webgpu": "../build/three.webgpu.js",
					"three/tsl": "../build/three.tsl.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three/webgpu';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { DynamicLighting } from 'three/addons/lighting/DynamicLighting.js';
			import { Inspector } from 'three/addons/inspector/Inspector.js';
			import Stats from 'three/addons/libs/stats.module.js';

			let camera, scene, renderer, controls, timer, stats;

			const pointLights = [];
			let autoAddInterval = null;

			const params = {
				dynamic: true,
				autoAdd: false,
				lightCount: 2,
				addLight() {

					addLight();

				},
				removeLight() {

					removeLight();

				},
				removeAll() {

					removeAllLights();

				}
			};

			init();

			function init() {

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 200 );
				camera.position.set( 0, 15, 30 );

				scene = new THREE.Scene();

				timer = new THREE.Timer();
				timer.connect( document );

				// Stats

				stats = new Stats();
				document.body.appendChild( stats.dom );

				// Floor

				const floorGeometry = new THREE.PlaneGeometry( 120, 120 );
				const floorMaterial = new THREE.MeshStandardMaterial( { color: 0x444444, roughness: 0.8 } );
				const floor = new THREE.Mesh( floorGeometry, floorMaterial );
				floor.rotation.x = - Math.PI / 2;
				scene.add( floor );

				// Shared geometries

				const sphereGeometry = new THREE.SphereGeometry( 0.8, 128, 128 );
				const boxGeometry = new THREE.BoxGeometry( 1.2, 1.2, 1.2, 64, 64, 64 );
				const torusGeometry = new THREE.TorusGeometry( 0.6, 0.25, 128, 128 );
				const cylinderGeometry = new THREE.CylinderGeometry( 0.5, 0.5, 1.4, 128, 64 );
				const coneGeometry = new THREE.ConeGeometry( 0.6, 1.4, 128, 64 );

				const geometries = [ sphereGeometry, boxGeometry, torusGeometry, cylinderGeometry, coneGeometry ];

				// 100 meshes — first 50 with unique PBR materials, remaining 50 reuse them

				const uniqueMaterials = [];

				for ( let i = 0; i < 50; i ++ ) {

					const material = new THREE.MeshStandardMaterial( {
						color: new THREE.Color().setHSL( i / 50, 0.6 + Math.random() * 0.4, 0.35 + Math.random() * 0.3 ),
						roughness: Math.random(),
						metalness: Math.random(),
					} );
					material.name = 'Standard_' + i;

					uniqueMaterials.push( material );

				}

				const meshesPerRing = 10;

				for ( let i = 0; i < 100; i ++ ) {

					const material = i < 50 ? uniqueMaterials[ i ] : uniqueMaterials[ i - 50 ];
					const geometry = geometries[ i % geometries.length ];
					const mesh = new THREE.Mesh( geometry, material );

					const ring = Math.floor( i / meshesPerRing );
					const indexInRing = i % meshesPerRing;
					const angle = ( indexInRing / meshesPerRing ) * Math.PI * 2 + ring * 0.3;
					const radius = 6 + ring * 4;

					mesh.position.set(
						Math.cos( angle ) * radius,
						0.7 + Math.random() * 2,
						Math.sin( angle ) * radius
					);

					mesh.rotation.set(
						Math.random() * Math.PI,
						Math.random() * Math.PI,
						0
					);

					scene.add( mesh );

				}

				// Center sphere

				const centerMaterial = new THREE.MeshStandardMaterial( { color: 0xffffff, roughness: 0.1, metalness: 0.9 } );
				const centerSphere = new THREE.Mesh( new THREE.SphereGeometry( 2, 128, 128 ), centerMaterial );
				centerSphere.position.y = 2;
				scene.add( centerSphere );

				// Ambient light

				scene.add( new THREE.AmbientLight( 0x404040, 0.5 ) );

				// Start with a couple point lights

				addLight();
				addLight();

				// Renderer

				createRenderer();

				// Inspector GUI

				window.addEventListener( 'resize', onWindowResize );

			}

			function createRenderer() {

				renderer = new THREE.WebGPURenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				renderer.inspector = new Inspector();
				document.body.appendChild( renderer.domElement );

				if ( params.dynamic ) renderer.lighting = new DynamicLighting();

				// Inspector GUI

				const gui = renderer.inspector.createParameters( 'Dynamic Lights' );

				gui.add( params, 'dynamic' ).name( 'dynamic mode' ).onChange( () => {

					renderer.dispose();
					document.body.removeChild( renderer.domElement );
					clearInterval( autoAddInterval );
					autoAddInterval = null;
					params.autoAdd = false;
					createRenderer();

				} );

				gui.add( params, 'autoAdd' ).name( 'auto-add lights' ).onChange( ( value ) => {

					if ( value ) {

						autoAddInterval = setInterval( () => {

							addLight();

						}, 500 );

					} else {

						clearInterval( autoAddInterval );
						autoAddInterval = null;

					}

				} );

				gui.add( params, 'addLight' ).name( 'add light' );
				gui.add( params, 'removeLight' ).name( 'remove light' );
				gui.add( params, 'removeAll' ).name( 'remove all lights' );
				gui.add( params, 'lightCount' ).name( 'point lights' ).listen();

				controls = new OrbitControls( camera, renderer.domElement );
				controls.enableDamping = true;
				controls.target.set( 0, 2, 0 );
				controls.update();

			}

			function addLight() {

				const color = new THREE.Color().setHSL( Math.random(), 0.8, 0.5 );
				const light = new THREE.PointLight( color, 1000 );

				const angle = Math.random() * Math.PI * 2;
				const radius = 5 + Math.random() * 20;
				light.position.set(
					Math.cos( angle ) * radius,
					1 + Math.random() * 6,
					Math.sin( angle ) * radius
				);

				light.userData.angle = angle;
				light.userData.radius = radius;
				light.userData.speed = 0.2 + Math.random() * 0.8;
				light.userData.baseY = light.position.y;

				// Visual indicator
				const sphere = new THREE.Mesh(
					new THREE.SphereGeometry( 0.15, 8, 8 ),
					new THREE.MeshBasicMaterial( { color: color } )
				);
				light.add( sphere );

				scene.add( light );
				pointLights.push( light );

				params.lightCount = pointLights.length;

			}

			function removeLight() {

				if ( pointLights.length === 0 ) return;

				const light = pointLights.pop();
				scene.remove( light );
				light.dispose();

				params.lightCount = pointLights.length;

			}

			function removeAllLights() {

				while ( pointLights.length > 0 ) {

					const light = pointLights.pop();
					scene.remove( light );
					light.dispose();

				}

				params.lightCount = 0;

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				timer.update();

				const time = timer.getElapsed();

				controls.update();

				// Animate lights

				for ( let i = 0; i < pointLights.length; i ++ ) {

					const light = pointLights[ i ];
					const d = light.userData;
					const t = time * d.speed + d.angle;

					light.position.x = Math.cos( t ) * d.radius;
					light.position.z = Math.sin( t ) * d.radius;
					light.position.y = d.baseY + Math.sin( t * 2 ) * 0.5;

				}

				renderer.render( scene, camera );

				stats.update();

			}

		</script>
	</body>
</html>