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+<!DOCTYPE HTML>
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+<html lang="en">
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+ <head>
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+ <title>three.js - particles - sprites - webgl</title>
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+ <meta charset="utf-8">
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+ <style type="text/css">
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+ body {
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+ background-color: #000000;
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+ margin: 0px;
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+ overflow: hidden;
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+ font-family:Monospace;
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+ font-size:13px;
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+ text-align:center;
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+ font-weight: bold;
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+ text-align:center;
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+ }
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+
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+ a {
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+ color:#0078ff;
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+ }
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+
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+ #info {
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+ color:#fff;
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+ position: absolute;
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+ top: 0px; width: 100%;
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+ padding: 5px;
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+ z-index:100;
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+
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+ }
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+
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+ #oldie {
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+ font-family:monospace;
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+ font-size:13px;
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+
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+ text-align:center;
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+ background:#eee;
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+ color:#000;
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+ padding:1em;
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+
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+ width:475px;
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+ margin:5em auto 0;
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+
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+ display:none;
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+ }
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+
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+ </style>
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+ </head>
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+ <body>
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+
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+ <div id="info">
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+ <a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - webgl particle sprites example -
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+ snowflakes by <a href="http://en.wikipedia.org/wiki/File:Sketch_of_snow_crystal_by_Ren%C3%A9_Descartes.jpg">René Descartes</a>
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+ </div>
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+
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+ <center>
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+ <div id="oldie">
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+ Sorry, your browser doesn't support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>
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+ and <a href="http://www.whatwg.org/specs/web-workers/current-work/">Web Workers</a>.<br/>
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+ <br/>
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+ Please try in
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+ <a href="http://www.chromium.org/getting-involved/dev-channel">Chrome 9+</a> /
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+ <a href="http://www.mozilla.com/en-US/firefox/all-beta.html">Firefox 4+</a> /
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+ <a href="http://nightly.webkit.org/">Safari OSX 10.6+</a>
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+ </div>
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+ </center>
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+
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+ <script type="text/javascript" src="../build/ThreeExtras.js"></script>
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+ <script type="text/javascript" src="js/Stats.js"></script>
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+
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+ <script type="text/javascript">
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+
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+ if ( !is_browser_compatible() ) {
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+
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+ document.getElementById( "oldie" ).style.display = "block";
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+
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+ }
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+
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+ var container, stats;
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+ var camera, scene, renderer, particles, geometry, materials = [], parameters, i, h, color, sprite, size;
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+ var mouseX = 0, mouseY = 0;
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+
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+ var windowHalfX = window.innerWidth / 2;
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+ var windowHalfY = window.innerHeight / 2;
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+
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+ init();
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+ setInterval( loop, 1000 / 60 );
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+
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+ function init() {
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+
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+ container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ camera = new THREE.Camera( 75, window.innerWidth / window.innerHeight, 1, 3000 );
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+ camera.position.z = 1000;
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+
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+ scene = new THREE.Scene();
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+ scene.fog = new THREE.FogExp2( 0x000000, 0.0008 );
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+
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+ geometry = new THREE.Geometry();
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+
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+ sprite1 = ImageUtils.loadTexture( "textures/sprites/snowflake1.png" );
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+ sprite2 = ImageUtils.loadTexture( "textures/sprites/snowflake2.png" );
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+ sprite3 = ImageUtils.loadTexture( "textures/sprites/snowflake3.png" );
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+ sprite4 = ImageUtils.loadTexture( "textures/sprites/snowflake4.png" );
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+ sprite5 = ImageUtils.loadTexture( "textures/sprites/snowflake5.png" );
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+
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+ for ( i = 0; i < 2000; i++ ) {
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+
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+ vector = new THREE.Vector3( Math.random() * 2000 - 1000, Math.random() * 2000 - 1000, Math.random() * 2000 - 1000 );
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+ geometry.vertices.push( new THREE.Vertex( vector ) );
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+
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+ }
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+
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+ parameters = [ [ [1.0, 0.2, 1.0], sprite2, 20 ], [ [0.95, 0.1, 1], sprite3, 15 ], [ [0.90, 0.05, 1], sprite1, 10 ], [ [0.85, 0, 0.8], sprite5, 8 ], [ [0.80, 0, 0.7], sprite4, 5 ],
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+ ];
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+
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+ for ( i = 0; i < parameters.length; i++ ) {
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+
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+ color = parameters[i][0];
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+ sprite = parameters[i][1];
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+ size = parameters[i][2];
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+
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+ materials[i] = new THREE.ParticleBasicMaterial( { size: size, map: sprite, blending: THREE.AdditiveBlending } );
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+ materials[i].color.setHSV( color[0], color[1], color[2] );
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+
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+ particles = new THREE.ParticleSystem( geometry, materials[i] );
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+ particles.rotation.x = Math.random() * 6;
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+ particles.rotation.y = Math.random() * 6;
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+ particles.rotation.z = Math.random() * 6;
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+ particles.updateMatrix();
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+ scene.addObject( particles );
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+
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+ }
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+
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+ scene.addObject( particles );
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+
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+ renderer = new THREE.WebGLRenderer( { clearAlpha: 1 });
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ container.appendChild( renderer.domElement );
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+
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+ renderer.context.disable( renderer.context.DEPTH_TEST );
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+
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+ stats = new Stats();
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+ stats.domElement.style.position = 'absolute';
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+ stats.domElement.style.top = '0px';
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+ container.appendChild( stats.domElement );
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+
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+ document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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+ document.addEventListener( 'touchstart', onDocumentTouchStart, false );
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+ document.addEventListener( 'touchmove', onDocumentTouchMove, false );
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+
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+ }
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+
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+ function onDocumentMouseMove( event ) {
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+
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+ mouseX = event.clientX - windowHalfX;
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+ mouseY = event.clientY - windowHalfY;
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+
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+ }
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+
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+ function onDocumentTouchStart( event ) {
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+
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+ if ( event.touches.length == 1 ) {
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+
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+ event.preventDefault();
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+
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+ mouseX = event.touches[ 0 ].pageX - windowHalfX;
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+ mouseY = event.touches[ 0 ].pageY - windowHalfY;
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+
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+ }
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+ }
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+
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+ function onDocumentTouchMove( event ) {
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+
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+ if ( event.touches.length == 1 ) {
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+
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+ event.preventDefault();
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+
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+ mouseX = event.touches[ 0 ].pageX - windowHalfX;
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+ mouseY = event.touches[ 0 ].pageY - windowHalfY;
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+
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+ }
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+
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+ }
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+
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+ function loop() {
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+
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+ var time = new Date().getTime() * 0.00005;
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+
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+ camera.position.x += ( mouseX - camera.position.x ) * 0.05;
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+ camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
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+
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+ for( i = 0; i < scene.objects.length; i++ ) {
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+
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+ scene.objects[i].rotation.y = time * ( i < 4 ? i+1 : - (i+1) );
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+ scene.objects[i].updateMatrix();
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+
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+ }
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+
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+ for( i = 0; i < materials.length; i++ ) {
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+
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+ color = parameters[i][0];
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+
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+ h = ( 360 * ( color[0] + time ) % 360 ) / 360;
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+ materials[i].color.setHSV( h, color[1], color[2] );
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+
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+ }
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+
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+ renderer.render( scene, camera );
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+
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+ stats.update();
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+ }
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+
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+ function is_browser_compatible() {
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+
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+ // WebGL support
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+
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+ try { var test = new Float32Array(1); } catch(e) { return false; }
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+
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+ // Web workers
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+
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+ return !!window.Worker;
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+
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+ }
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+
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+ </script>
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+ </body>
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+</html>
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alteredq
