javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - light probe</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="http://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - light probe
		</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import { GUI } from './jsm/libs/dat.gui.module.js';

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { LightProbeGenerator } from './jsm/lights/LightProbeGenerator.js';

			var mesh, renderer, scene, camera;

			var gui;

			var lightProbe;
			var directionalLight;

			// linear color space
			var API = {
				lightProbeIntensity: 1.0,
				directionalLightIntensity: 0.2,
				envMapIntensity: 1
			};

			init();

			function init() {

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

				// tone mapping
				//renderer.toneMapping = LinearToneMapping;
			 	//renderer.toneMappingExposure = API.exposure;

				// gamma
				renderer.gammaOutput = true;
				renderer.gammaFactor = 2.2; // approximate sRGB

				// scene
				scene = new THREE.Scene();

				// camera
				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 0, 0, 30 );

				// controls
				var controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );
				controls.minDistance = 10;
				controls.maxDistance = 50;
				controls.enablePan = false;

				// probe
				lightProbe = new THREE.LightProbe();
				scene.add( lightProbe );

				// light
				directionalLight = new THREE.DirectionalLight( 0xffffff, API.directionalLightIntensity );
				directionalLight.position.set( 10, 10, 10 );
				scene.add( directionalLight );

				// envmap
				var genCubeUrls = function ( prefix, postfix ) {

					return [
						prefix + 'px' + postfix, prefix + 'nx' + postfix,
						prefix + 'py' + postfix, prefix + 'ny' + postfix,
						prefix + 'pz' + postfix, prefix + 'nz' + postfix
					];

				};

				var urls = genCubeUrls( 'textures/cube/pisa/', '.png' );

				new THREE.CubeTextureLoader().load( urls, function ( cubeTexture ) {

					cubeTexture.encoding = THREE.sRGBEncoding;

					scene.background = cubeTexture;

					lightProbe.copy( LightProbeGenerator.fromCubeTexture( cubeTexture ) );

					var geometry = new THREE.SphereBufferGeometry( 5, 64, 32 );
					//var geometry = new TorusKnotBufferGeometry( 4, 1.5, 256, 32, 2, 3 );

					var material = new THREE.MeshStandardMaterial( {
						color: 0xffffff,
						metalness: 0,
						roughness: 0,
						envMap: cubeTexture,
						envMapIntensity: API.envMapIntensity,
					} );

					// mesh
					mesh = new THREE.Mesh( geometry, material );
					scene.add( mesh );

					render();

				} );


				// gui
				gui = new GUI();

				gui.width = 300;

				gui.domElement.style.userSelect = 'none';

				var fl = gui.addFolder( 'Intensity' );

				fl.add( API, 'lightProbeIntensity', 0, 1, 0.02 )
					.name( 'light probe' )
					.onChange( function () {

						lightProbe.intensity = API.lightProbeIntensity; render();

					} );

				fl.add( API, 'directionalLightIntensity', 0, 1, 0.02 )
					.name( 'directional light' )
					.onChange( function () {

						directionalLight.intensity = API.directionalLightIntensity; render();

					} );

				fl.add( API, 'envMapIntensity', 0, 1, 0.02 )
					.name( 'envMap' )
					.onChange( function () {

						mesh.material.envMapIntensity = API.envMapIntensity; render();

					} );

				fl.open();

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

			}

			function onWindowResize() {

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

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

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>