javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - lights - point lights</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="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - point lights WebGL demo
		</div>

		<script type="module">
			import {
				Clock,
				Color,
				DirectionalLight,
				Fog,
				Mesh,
				MeshBasicMaterial,
				MeshPhongMaterial,
				MeshStandardMaterial,
				PerspectiveCamera,
				PlaneBufferGeometry,
				PointLight,
				Scene,
				SphereBufferGeometry,
				RepeatWrapping,
				RGBFormat,
				TextureLoader,
				TorusBufferGeometry,
				WebGLRenderer
			} from "../build/three.module.js";

			import Stats from './jsm/libs/stats.module.js';

			import { TrackballControls } from './jsm/controls/TrackballControls.js';

			var camera, scene, renderer, controls;
			var light1, light2, light3, light4, light5, light6;

			var clock = new Clock();

			var stats;

			init();
			animate();

			function init() {

				var container = document.getElementById( 'container' );

				// CAMERA

				camera = new PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 300 );
				camera.position.set( 0, 15, 150 );
				camera.lookAt( 0, 0, 0 );

				// SCENE

				scene = new Scene();
				scene.background = new Color( 0x040306 );
				scene.fog = new Fog( 0x040306, 10, 300 );

				// TEXTURES

				var textureLoader = new TextureLoader();

				var texture = textureLoader.load( "textures/disturb.jpg" );
				texture.repeat.set( 20, 10 );
				texture.wrapS = texture.wrapT = RepeatWrapping;
				texture.format = RGBFormat;

				// MATERIALS

				var groundMaterial = new MeshPhongMaterial( { color: 0xffffff, map: texture } );
				var objectMaterial = new MeshStandardMaterial( { color: 0xffffff, roughness: 0.5, metalness: 1.0 } );

				// GROUND

				var mesh = new Mesh( new PlaneBufferGeometry( 800, 400, 2, 2 ), groundMaterial );
				mesh.position.y = - 5;
				mesh.rotation.x = - Math.PI / 2;
				scene.add( mesh );

				// OBJECTS

				var objectGeometry = new TorusBufferGeometry( 1.5, 0.4, 8, 16 );

				for ( var i = 0; i < 5000; i ++ ) {

					var mesh = new Mesh( objectGeometry, objectMaterial );

					mesh.position.x = 400 * ( 0.5 - Math.random() );
					mesh.position.y = 50 * ( 0.5 - Math.random() ) + 25;
					mesh.position.z = 200 * ( 0.5 - Math.random() );

					mesh.rotation.y = 3.14 * ( 0.5 - Math.random() );
					mesh.rotation.x = 3.14 * ( 0.5 - Math.random() );

					mesh.matrixAutoUpdate = false;
					mesh.updateMatrix();
					scene.add( mesh );

				}

				// LIGHTS

				var intensity = 2.5;
				var distance = 100;
				var decay = 2.0;

				var c1 = 0xff0040, c2 = 0x0040ff, c3 = 0x80ff80, c4 = 0xffaa00, c5 = 0x00ffaa, c6 = 0xff1100;

				var sphere = new SphereBufferGeometry( 0.25, 16, 8 );

				light1 = new PointLight( c1, intensity, distance, decay );
				light1.add( new Mesh( sphere, new MeshBasicMaterial( { color: c1 } ) ) );
				scene.add( light1 );

				light2 = new PointLight( c2, intensity, distance, decay );
				light2.add( new Mesh( sphere, new MeshBasicMaterial( { color: c2 } ) ) );
				scene.add( light2 );

				light3 = new PointLight( c3, intensity, distance, decay );
				light3.add( new Mesh( sphere, new MeshBasicMaterial( { color: c3 } ) ) );
				scene.add( light3 );

				light4 = new PointLight( c4, intensity, distance, decay );
				light4.add( new Mesh( sphere, new MeshBasicMaterial( { color: c4 } ) ) );
				scene.add( light4 );

				light5 = new PointLight( c5, intensity, distance, decay );
				light5.add( new Mesh( sphere, new MeshBasicMaterial( { color: c5 } ) ) );
				scene.add( light5 );

				light6 = new PointLight( c6, intensity, distance, decay );
				light6.add( new Mesh( sphere, new MeshBasicMaterial( { color: c6 } ) ) );
				scene.add( light6 );

				var dlight = new DirectionalLight( 0xffffff, 0.05 );
				dlight.position.set( 0.5, 1, 0 ).normalize();
				scene.add( dlight );

				// RENDERER

				renderer = new WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				renderer.gammaInput = true;
				renderer.gammaOutput = true;

				// CONTROLS

				controls = new TrackballControls( camera, renderer.domElement );

				controls.rotateSpeed = 1.0;
				controls.zoomSpeed = 1.2;
				controls.panSpeed = 0.8;

				controls.noZoom = false;
				controls.noPan = false;

				controls.staticMoving = false;
				controls.dynamicDampingFactor = 0.15;

				controls.keys = [ 65, 83, 68 ];

				// STATS

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

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

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

				controls.handleResize();

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var time = Date.now() * 0.00025;
				var d = 150;

				light1.position.x = Math.sin( time * 0.7 ) * d;
				light1.position.z = Math.cos( time * 0.3 ) * d;

				light2.position.x = Math.cos( time * 0.3 ) * d;
				light2.position.z = Math.sin( time * 0.7 ) * d;

				light3.position.x = Math.sin( time * 0.7 ) * d;
				light3.position.z = Math.sin( time * 0.5 ) * d;

				light4.position.x = Math.sin( time * 0.3 ) * d;
				light4.position.z = Math.sin( time * 0.5 ) * d;

				light5.position.x = Math.cos( time * 0.3 ) * d;
				light5.position.z = Math.sin( time * 0.5 ) * d;

				light6.position.x = Math.cos( time * 0.7 ) * d;
				light6.position.z = Math.cos( time * 0.5 ) * d;

				controls.update( clock.getDelta() );

				renderer.render( scene, camera );

			}

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