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Added particle sprites WebGL example.

alteredq 14 years ago
parent
c8a85ebffd
commit
74fe85f7ef
6 changed files with 228 additions and 0 deletions
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      examples/particles_sprites_gl.html
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      examples/textures/sprites/snowflake1.png
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      examples/textures/sprites/snowflake2.png
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      examples/textures/sprites/snowflake3.png
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      examples/textures/sprites/snowflake4.png
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      examples/textures/sprites/snowflake5.png

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

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examples/textures/sprites/snowflake1.png
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examples/textures/sprites/snowflake2.png
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examples/textures/sprites/snowflake3.png
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examples/textures/sprites/snowflake4.png
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examples/textures/sprites/snowflake5.png
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