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


			
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							<!DOCTYPE HTML>
<html lang="en">
	<head>
		<title>three.js webgl - shadow map</title>
		<meta charset="utf-8">
		<style type="text/css">
			body {
				font-family: Monospace;
				background-color: #000;
				color: #fff;
				margin: 0px;
				overflow: hidden;
			}
			#info {
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				z-index: 100;
				display:block;
			}
			#info a { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
		</style>
	</head>

	<body>

		<div id="info">
		<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - shadowmap - models by <a href="http://mirada.com/">mirada</a> from <a href="http://ro.me">rome</a></br>
		move camera with WASD / RF + mouse
		</div>

		<script type="text/javascript" src="../build/Three.js"></script>

		<script type="text/javascript" src="js/Detector.js"></script>
		<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
		<script type="text/javascript" src="js/Stats.js"></script>

		<script type="text/javascript" src="fonts/helvetiker_bold.typeface.js"></script>

		<script type="text/javascript">

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

			var SHADOW_MAP_WIDTH = 1024, SHADOW_MAP_HEIGHT = 1024;

			var MARGIN = 100;

			var SCREEN_WIDTH = window.innerWidth;
			var SCREEN_HEIGHT = window.innerHeight - 2 * MARGIN;
			var FLOOR = -250;

			var camera, scene, renderer;
			var container, stats;

			var NEAR = 5, FAR = 3000;

			var sceneHUD, cameraOrtho, hudMaterial;

			var initPos = new THREE.Vector3( 700, 50, 1900 );
			var initLight = new THREE.Vector3( 0, 1500, 1000 );
			var deltaCam = new THREE.Vector3();

			var morphs = [];

			var light;

			init();
			animate();


			function init() {

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

				// SCENE CAMERA

				camera = new THREE.FirstPersonCamera( { fov: 23, aspect: SCREEN_WIDTH / SCREEN_HEIGHT, near: NEAR, far: FAR,
														lookSpeed: 0.0125, movementSpeed: 500, noFly: false, lookVertical: true,
														constrainVertical: true, verticalMin: 1.5, verticalMax: 2.0
														} );

				camera.position.set( 700, 50, 1900 );
				camera.lon = -110;

				// SHADOW TEXTURE

				var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBAFormat };
				shadowTexture = new THREE.WebGLRenderTarget( SHADOW_MAP_WIDTH, SHADOW_MAP_HEIGHT, pars );

				// SCENE

				scene = new THREE.Scene();
				scene.fog = new THREE.Fog( 0xffaa55, 1000, FAR );
				THREE.ColorUtils.adjustHSV( scene.fog.color, 0.02, -0.15, -0.65 );

				// LIGHTS

				var ambient = new THREE.AmbientLight( 0x444444 );
				scene.addLight( ambient );

				light = new THREE.SpotLight( 0xffffff );
				light.position.set( 0, 1500, 1000 );
				light.target.position.set( 0, 0, 0 );
				light.castShadow = true;
				scene.addLight( light );

				createHUD();
				createScene();

				// RENDERER

				renderer = new THREE.WebGLRenderer( { clearColor: 0x000000, clearAlpha: 1, antialias: false } );
				renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
				renderer.domElement.style.position = "relative";
				renderer.domElement.style.top = MARGIN + 'px';
				container.appendChild( renderer.domElement );

				renderer.setClearColor( scene.fog.color, 1 );
				renderer.autoClear = false;

				renderer.shadowCameraNear = 3;
				renderer.shadowCameraFar = camera.far;
				renderer.shadowCameraFov = 50;

				renderer.shadowMapBias = 0.0039;
				renderer.shadowMapDarkness = 0.5;
				renderer.shadowMapWidth = SHADOW_MAP_WIDTH;
				renderer.shadowMapHeight = SHADOW_MAP_HEIGHT;

				renderer.shadowMapEnabled = true;
				renderer.shadowMapSoft = true;

				// STATS

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				stats.domElement.style.zIndex = 100;
				//container.appendChild( stats.domElement );

			}

			function createHUD() {

				cameraOrtho = new THREE.Camera( 45, SHADOW_MAP_WIDTH / SHADOW_MAP_HEIGHT, NEAR, FAR );
				cameraOrtho.projectionMatrix = THREE.Matrix4.makeOrtho( SCREEN_WIDTH / - 2, SCREEN_WIDTH / 2,  SCREEN_HEIGHT / 2, SCREEN_HEIGHT / - 2, -10, 1000 );
				cameraOrtho.position.z = 10;

				var shader = THREE.ShaderUtils.lib[ "screen" ];
				var uniforms = new THREE.UniformsUtils.clone( shader.uniforms );

				hudMaterial = new THREE.MeshShaderMaterial( { vertexShader: shader.vertexShader, fragmentShader: shader.fragmentShader, uniforms: uniforms } );

				var hudGeo = new THREE.PlaneGeometry( SHADOW_MAP_WIDTH / 2, SHADOW_MAP_HEIGHT / 2 );
				var hudMesh = new THREE.Mesh( hudGeo, hudMaterial );
				hudMesh.position.x = ( SCREEN_WIDTH - SHADOW_MAP_WIDTH / 2 ) * -0.5;
				hudMesh.position.y = ( SCREEN_HEIGHT - SHADOW_MAP_HEIGHT / 2 ) * -0.5;

				sceneHUD = new THREE.Scene();
				sceneHUD.addObject( hudMesh );

			}

			function createScene( ) {

				// GROUND

				var geometry = new THREE.PlaneGeometry( 100, 100 );
				var planeMaterial = new THREE.MeshLambertMaterial( { color: 0xffdd99 } );
				THREE.ColorUtils.adjustHSV( planeMaterial.color, 0, 0, 0.9 );

				var ground = new THREE.Mesh( geometry, planeMaterial );

				ground.position.set( 0, FLOOR, 0 );
				ground.rotation.x = -1.57;
				ground.scale.set( 100, 100, 100 );

				ground.castShadow = false;
				ground.receiveShadow = true;

				scene.addObject( ground );

				// TEXT

				var textGeo = new THREE.TextGeometry( "THREE.JS", {

					size: 200,
					height: 50,
					curveSegments: 7,

					font: "helvetiker",
					weight: "bold",
					style: "normal",

					bevelThickness: 1,
					bevelSize: 5,
					bevelEnabled: true

				});

				var textMaterial = new THREE.MeshPhongMaterial( { color: 0xff0000, specular: 0xffffff, ambient: 0xaa0000 } );

				var mesh = new THREE.Mesh( textGeo, textMaterial );
				mesh.position.y = FLOOR + 67;

				mesh.castShadow = true;
				mesh.receiveShadow = true;

				scene.addObject( mesh );

				// CUBES

				var mesh = new THREE.Mesh( new THREE.CubeGeometry( 1500, 220, 150 ), planeMaterial );

				mesh.position.y = FLOOR - 50;
				mesh.position.z = 20;

				mesh.castShadow = true;
				mesh.receiveShadow = true;

				scene.addObject( mesh );

				var mesh = new THREE.Mesh( new THREE.CubeGeometry( 1600, 170, 250 ), planeMaterial );

				mesh.position.y = FLOOR - 50;
				mesh.position.z = 20;

				mesh.castShadow = true;
				mesh.receiveShadow = true;

				scene.addObject( mesh );

				// MORPHS

				function addMorph( geometry, speed, duration, x, y, z, fudgeColor ) {

					var material = new THREE.MeshLambertMaterial( { color: 0xffaa55, morphTargets: true, vertexColors: THREE.FaceColors } );

					if ( fudgeColor ) THREE.ColorUtils.adjustHSV( material.color, 0, 0.5 - Math.random(), 0.5 - Math.random() );

					var meshAnim = new THREE.Mesh( geometry, material );

					meshAnim.position.set( x, y, z );
					meshAnim.rotation.y = 1.57;

					meshAnim.castShadow = true;
					meshAnim.receiveShadow = false;

					scene.addObject( meshAnim );

					morphs.push( { mesh: meshAnim, lastKeyframe: 0, currentKeyframe: 0,
								   offset: Math.random() * 6, speed: speed, duration: duration,
								   oldTime: new Date().getTime() } );

				}

				function morphColorsToFaceColors( geometry ) {

					if ( geometry.morphColors && geometry.morphColors.length ) {

						var colorMap = geometry.morphColors[ 0 ];

						for ( var i = 0; i < colorMap.colors.length; i ++ ) {

							geometry.faces[ i ].color = colorMap.colors[ i ];

						}

					}

				}

				var loader = new THREE.JSONLoader();

				loader.load( { model: "models/animated/horse.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );

					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, 300, true );
					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, 450, true );
					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, 600, true );

					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, -300, true );
					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, -450, true );
					addMorph( geometry, 0.55, 1000, 100 - Math.random() * 1000, FLOOR, -600, true );

				} } );

				/*
				loader.load( { model: "obj/morphs/fox.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.2, 1000, 100 - Math.random() * 500, FLOOR - 5, 600 );

				} } );

				loader.load( { model: "obj/morphs/shdw3walk.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.04, 2000, -500, FLOOR + 60, 245 );

				} } );

				loader.load( { model: "obj/morphs/flamingo.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.5, 1000, 500 - Math.random() * 500, FLOOR + 350, 40 );

				} } );

				loader.load( { model: "obj/morphs/stork.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.35, 1000, 500 - Math.random() * 500, FLOOR + 350, 340 );

				} } );

				loader.load( { model: "obj/morphs/mountainlion.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.4, 1000, 500 - Math.random() * 500, FLOOR - 5, 700 );

				} } );

				loader.load( { model: "obj/morphs/bearBrown.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.3, 2500, -500, FLOOR - 5, -750 );

				} } );

				loader.load( { model: "obj/morphs/parrot.js", callback: function( geometry ) {

					morphColorsToFaceColors( geometry );
					addMorph( geometry, 0.45, 500, 500 - Math.random() * 500, FLOOR + 300, 700 );

				} } );

				*/

			}


			var t = 0, newTime, delta;


			function updateMorph( morph ) {

				// Alternate morph targets

				var interpolation = morph.duration / ( morph.mesh.geometry.morphTargets.length - 1 );

				var time = ( new Date().getTime()  + morph.offset * 100 ) % morph.duration;
				var keyframe = Math.floor( time / interpolation ) + 1;

				var mesh = morph.mesh;

				if ( keyframe != morph.currentKeyframe ) {

					mesh.morphTargetInfluences[ morph.lastKeyframe ] = 0;
					mesh.morphTargetInfluences[ morph.currentKeyframe ] = 1;
					mesh.morphTargetInfluences[ keyframe ] = 0;

					morph.lastKeyframe = morph.currentKeyframe;
					morph.currentKeyframe = keyframe;

				}

				mesh.morphTargetInfluences[ keyframe ] = ( time % interpolation ) / interpolation;
				mesh.morphTargetInfluences[ morph.lastKeyframe ] = 1 - mesh.morphTargetInfluences[ keyframe ];

				var newTime = new Date().getTime();
				delta = newTime - morph.oldTime;
				morph.oldTime = newTime;

				mesh.position.x += morph.speed * delta;

				if ( mesh.position.x  > 2000 )  {

					mesh.position.x = -1000 - Math.random() * 500;

				}

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				for ( var i = 0; i < morphs.length; i++ ) updateMorph( morphs[ i ] );

				renderer.clear();
				renderer.render( scene, camera );

				// Render debug HUD with shadow map

				//hudMaterial.uniforms.tDiffuse.texture = renderer.shadowMap[ 0 ];
				//renderer.render( sceneHUD, cameraOrtho );

			}

		</script>

	</body>
</html>