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webgl_materials_variations_phong.html 6.7 KB
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simple material variations for phong and physical.  
Ben Houston 已提交
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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">
		<style>
					body {
				color: #fff;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #fff;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
			}
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - Phong Material Variantions by <a href="http://clara.io/" target="_blank">Ben Houston</a>.</div>


		<script src="../build/three.min.js"></script>
		<script src="js/controls/OrbitControls.js"></script>
		<script src="js/geometries/TextGeometry.js"></script>
		<script src="js/utils/FontUtils.js"></script>
		<script src="fonts/gentilis_regular.typeface.js"></script>

		<script src="js/Detector.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

			var container, stats;

			var camera, scene, renderer, controls, objects = [];
			var particleLight;

			init();
			animate();

			function init() {

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

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

				scene = new THREE.Scene();

				// Materials

				var imgTexture = THREE.ImageUtils.loadTexture( "textures/planets/moon_1024.jpg" );
				imgTexture.wrapS = imgTexture.wrapT = THREE.RepeatWrapping;
				imgTexture.anisotropy = 16;
				imgTexture = null;

				var shininess = 50, specular = 0x333333, bumpScale = 1, shading = THREE.SmoothShading;

				var materials = [];

				var path = "textures/cube/SwedishRoyalCastle/";
				var format = '.jpg';
				var urls = [
						path + 'px' + format, path + 'nx' + format,
						path + 'py' + format, path + 'ny' + format,
						path + 'pz' + format, path + 'nz' + format
					];

				var reflectionCube = THREE.ImageUtils.loadTextureCube( urls );
				reflectionCube.format = THREE.RGBFormat;
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add variations with cubeMap on phong.  
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simple material variations for phong and physical.  
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				var cubeWidth = 400;
				var numberOfSphersPerSide = 5;
				var sphereRadius = ( cubeWidth / numberOfSphersPerSide ) * 0.8 * 0.5;
				var stepSize = 1.0 / numberOfSphersPerSide;

				var geometry = new THREE.SphereBufferGeometry( sphereRadius, 32, 16 );
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add variations with cubeMap on phong.  
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				var localReflectionCube;
				
				for( var alpha = 0, alphaIndex = 0; alpha <= 1.0; alpha += stepSize, alphaIndex ++ ) {

					if( alphaIndex % 2 === 0 ) {
						localReflectionCube = null;
					}
					else {
						localReflectionCube = reflectionCube;
					}
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simple material variations for phong and physical.  
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					var specularShininess = Math.pow( 2, alpha * 10 );

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

						var specularColor = new THREE.Color( beta * 0.2, beta * 0.2, beta * 0.2 );
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						var reflectivity = beta;
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						for( var gamma = 0; gamma <= 1.0; gamma += stepSize ) {

							// basic monochromatic energy preservation
							var diffuseColor = new THREE.Color( 0, 0, gamma ).multiplyScalar( 1 - beta * 0.2 );
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							var material = new THREE.MeshPhongMaterial( { map: imgTexture, bumpMap: imgTexture, bumpScale: bumpScale, color: diffuseColor, specular: specularColor, reflectivity: reflectivity, shininess: specularShininess, shading: THREE.SmoothShading, envMap: localReflectionCube  } )
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simple material variations for phong and physical.  
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							var mesh = new THREE.Mesh( geometry, material );

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

							objects.push( mesh );

							scene.add( mesh );
						}
					}
				}
	
	
				function addLabel( name, location ) {
					var textGeo = new THREE.TextGeometry( name, {

						size: 20,
						height: 5,
						curveSegments: 10,

						font: 'gentilis',
						weight: 'normal',
						style: 'normal',

						material: 0,
						extrudeMaterial: 1

					});

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

				addLabel( "-shininess", new THREE.Vector3( -350, 0, 0 ) );
				addLabel( "+shininess", new THREE.Vector3( 350, 0, 0 ) );
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				addLabel( "-specular, -reflectivity", new THREE.Vector3( 0, -300, 0 ) );
				addLabel( "+specular, +reflectivity", new THREE.Vector3( 0, 300, 0 ) );
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simple material variations for phong and physical.  
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				addLabel( "-diffuse", new THREE.Vector3( 0, 0, -300 ) );
				addLabel( "+diffuse", new THREE.Vector3( 0, 0, 300 ) );

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

				// Lights

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

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

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

				//

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setClearColor( 0x0a0a0a );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.sortObjects = true;

				container.appendChild( renderer.domElement );

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

				//

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';

				container.appendChild( stats.domElement );

				controls = new THREE.OrbitControls( camera );
				controls.target.set( 0, 0, 0 );
				controls.update();

				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 );

				for ( var i = 0, l = objects.length; i < l; i ++ ) {

					var object = objects[ i ];

					object.rotation.y += 0.005;

				}

				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>