javascript
/
three.js
spiegel van https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials</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> - Physical Material Variations by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.<br/><br/>
		Note: Every second sphere has an IBL environment map on it.</div>

		<script type="module">
			import {
				AmbientLight,
				Color,
				DirectionalLight,
				FontLoader,
				LinearFilter,
				Mesh,
				MeshBasicMaterial,
				MeshPhysicalMaterial,
				PerspectiveCamera,
				PointLight,
				Scene,
				SphereBufferGeometry,
				TextBufferGeometry,
				UnsignedByteType,
				Uncharted2ToneMapping,
				Vector3,
				WebGLRenderer,
			} from "../build/three.module.js";

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

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { HDRCubeTextureLoader } from './jsm/loaders/HDRCubeTextureLoader.js';
			import { PMREMGenerator } from './jsm/pmrem/PMREMGenerator.js';
			import { PMREMCubeUVPacker } from './jsm/pmrem/PMREMCubeUVPacker.js';

			var container, stats;

			var camera, scene, renderer;
			var particleLight;

			var loader = new FontLoader();
			loader.load( 'fonts/gentilis_regular.typeface.json', function ( font ) {

				init( font );
				animate();

			} );

			function init( font ) {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.set( 0.0, 400, 400 * 3.5 );

				//

				var genCubeUrls = function ( prefix, postfix ) {

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

				};

				scene = new Scene();

				var hdrUrls = genCubeUrls( './textures/cube/pisaHDR/', '.hdr' );
				var hdrCubeRenderTarget = null;

				new HDRCubeTextureLoader()
					.setType( UnsignedByteType )
					.load( hdrUrls, function ( hdrCubeMap ) {

						var pmremGenerator = new PMREMGenerator( hdrCubeMap );
						pmremGenerator.update( renderer );

						var pmremCubeUVPacker = new PMREMCubeUVPacker( pmremGenerator.cubeLods );
						pmremCubeUVPacker.update( renderer );

						hdrCubeRenderTarget = pmremCubeUVPacker.CubeUVRenderTarget;

						// Materials

						var cubeWidth = 400;
						var numberOfSphersPerSide = 5;
						var sphereRadius = ( cubeWidth / numberOfSphersPerSide ) * 0.8 * 0.5;
						var stepSize = 1.0 / numberOfSphersPerSide;

						var geometry = new SphereBufferGeometry( sphereRadius, 32, 16 );

						var index = 0;

						for ( var alpha = 0; alpha <= 1.0; alpha += stepSize ) {

							for ( var beta = 0; beta <= 1.0; beta += stepSize ) {

								for ( var gamma = 0; gamma <= 1.0; gamma += stepSize ) {

									var diffuseColor = new Color().setHSL( alpha, 0.5, 0.25 );

									var material = new MeshPhysicalMaterial( {
										color: diffuseColor,
										metalness: 0,
										roughness: 0.5,
										clearCoat: 1.0 - alpha,
										clearCoatRoughness: 1.0 - beta,
										reflectivity: 1.0 - gamma,
										envMap: ( index % 2 ) == 1 ? hdrCubeRenderTarget.texture : null
									} );

									index ++;

									var mesh = new Mesh( geometry, material );

									mesh.position.x = alpha * 400 - 200;
									mesh.position.y = beta * 400 - 200;
									mesh.position.z = gamma * 400 - 200;

									scene.add( mesh );

								}
								index ++;

							}
							index ++;

						}

						hdrCubeMap.magFilter = LinearFilter;
						hdrCubeMap.needsUpdate = true;
						scene.background = hdrCubeMap;

						pmremGenerator.dispose();
						pmremCubeUVPacker.dispose();

					} );

				function addLabel( name, location ) {

					var textGeo = new TextBufferGeometry( name, {

						font: font,

						size: 20,
						height: 1,
						curveSegments: 1

					} );

					var textMaterial = new MeshBasicMaterial( { color: 0xffffff } );
					var textMesh = new Mesh( textGeo, textMaterial );
					textMesh.position.copy( location );
					scene.add( textMesh );

				}

				addLabel( "+clearCoat", new Vector3( - 350, 0, 0 ) );
				addLabel( "-clearCoat", new Vector3( 350, 0, 0 ) );

				addLabel( "+clearCoatRoughness", new Vector3( 0, - 300, 0 ) );
				addLabel( "-clearCoatRoughness", new Vector3( 0, 300, 0 ) );

				addLabel( "+reflectivity", new Vector3( 0, 0, - 300 ) );
				addLabel( "-reflectivity", new Vector3( 0, 0, 300 ) );

				particleLight = new Mesh( new SphereBufferGeometry( 4, 8, 8 ), new MeshBasicMaterial( { color: 0xffffff } ) );
				scene.add( particleLight );

				// Lights

				scene.add( new AmbientLight( 0x222222 ) );

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

				var pointLight = new PointLight( 0xffffff, 2, 800 );
				particleLight.add( pointLight );

				//

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

				renderer.gammaOutput = true;
				renderer.toneMapping = Uncharted2ToneMapping;
				renderer.toneMappingExposure = 0.75;

				//

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

				var controls = new OrbitControls( camera, renderer.domElement );

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

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var timer = Date.now() * 0.00025;

				//camera.position.x = Math.cos( timer ) * 800;
				//camera.position.z = Math.sin( timer ) * 800;

				camera.lookAt( scene.position );

				particleLight.position.x = Math.sin( timer * 7 ) * 300;
				particleLight.position.y = Math.cos( timer * 5 ) * 400;
				particleLight.position.z = Math.cos( timer * 3 ) * 300;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>