javascript
/
three.js
oglindă de https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - multiple elements</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			* {
				box-sizing: border-box;
				-moz-box-sizing: border-box;
			}

			body {
				color: #000;
				font-family:Monospace;
				font-size:13px;

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

			#info {
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
				text-align:center;
			}

			#content {
				position: absolute;
				top: 0px; width: 100%;
				z-index: 1;
				padding: 2em;
			}

			a {

				color: #0080ff;
			}

			#c {
				position: fixed;
				left: 0px;
				width: 100%;
				height: 100%;
			}

			.list-item {
				margin: 1em;
				padding: 2em;
				display: -webkit-flex;
				display: flex;
				flex-direction: row;
				-webkit-flex-direction: row;
			}

			.list-item .scene {
				width: 200px;
				height: 200px;
				flex: 0 0 auto;
				-webkit-flex: 0 0 auto;
			}
			.list-item .description {
				font-family: sans-serif;
				font-size: large;
				padding-left: 2em;
				flex: 1 1 auto;
				-webkit-flex: 1 1 auto;
			}

			@media only screen and (max-width : 600px) {
				#content {
					width: 100%;
				}
				.list-item {
					margin: 0.5em;
					padding: 0.5em;
					flex-direction: column;
					-webkit-flex-direction: column;
				}
				.list-item .description {
					padding-left: 0em;
				}
			}
		</style>
	</head>
	<body>

		<canvas id="c"></canvas>
		<div id="content">
			<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - multiple elements - webgl</div>
		</div>

		<script src="../build/three.min.js"></script>

		<script src="js/Detector.js"></script>

		<script id="template" type="notjs">
			<div class="scene"></div>
			<div class="description">some random text about this object, scene, whatever</div>
		</script>
		<script>

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

			var canvas;

			var scenes = [], camera, renderer, emptyScene;

			init();
			animate();

			function init() {

				canvas = document.getElementById( "c" );

				camera = new THREE.PerspectiveCamera( 75, 1, 0.1, 100 );
				camera.position.z = 1.5;

				var geometries = [
					new THREE.BoxGeometry( 1, 1, 1 ),
					new THREE.SphereGeometry( 0.5, 12, 12 ),
					new THREE.DodecahedronGeometry( 0.5 ),
					new THREE.CylinderGeometry( 0.5, 0.5, 1, 12 ),
				];

				var template = document.getElementById("template").text;
				var content = document.getElementById("content");

				var emptyScene = new THREE.Scene();

				var numScenes = 100;

				for ( var ii =  0; ii < numScenes; ++ii ) {

					var scene = new THREE.Scene();

					// make a list item.
					var element = document.createElement( "div" );
					element.innerHTML = template;
					element.className = "list-item";

					// Look up the element that represents the area
					// we want to render the scene
					scene.element = element.querySelector(".scene");
					content.appendChild(element);

					// add one random mesh to each scene
					var geometry = geometries[ geometries.length * Math.random() | 0 ];
					var material = new THREE.MeshLambertMaterial( { color: randColor() } );

					scene.add( new THREE.Mesh( geometry, material ) );

					light = new THREE.DirectionalLight( 0xffffff );
					light.position.set( 0.5, 0.8, 1 );
					scene.add( light );

					light = new THREE.DirectionalLight( 0xffffff );
					light.position.set( -0.5, -0.8, -1 );
					scene.add( light );

					scenes.push( scene );
				}


				renderer = new THREE.WebGLRenderer( { canvas: canvas, antialias: true } );
				renderer.setClearColor( 0xFFFFFF );

			}

			function updateSize() {

				var width = canvas.clientWidth;
				var height = canvas.clientHeight;

				if ( canvas.width !== width || canvas.height != height ) {

					renderer.setSize ( width, height, false );

				}

			}

			function animate() {

				render();

				requestAnimationFrame( animate );
			}

			function render() {

				updateSize();

				renderer.setClearColor( 0xFFFFFF );
				renderer.clear( true );
				renderer.setClearColor( 0xE0E0E0 );

				renderer.enableScissorTest( true );
				scenes.forEach( function( scene ) {
					// so something moves
					scene.children[0].rotation.x = Date.now() * 0.00111;
					scene.children[0].rotation.z = Date.now() * 0.001;

					// get the element that is a place holder for where we want to
					// draw the scene
					var element = scene.element;

					// get its position relative to the page's viewport
					var rect = element.getBoundingClientRect();

					// check if it's offscreen. If so skip it
					if ( rect.bottom < 0 || rect.top  > renderer.domElement.clientHeight ||
						 rect.right  < 0 || rect.left > renderer.domElement.clientWidth ) {
					  return;  // it's off screen
					}

					// set the viewport
					var width  = rect.right - rect.left;
					var height = rect.bottom - rect.top;
					var left   = rect.left;
					var bottom = renderer.domElement.clientHeight - rect.bottom;

					camera.aspect = width / height;
					camera.updateProjectionMatrix();
					renderer.setViewport( left, bottom, width, height );
					renderer.setScissor( left, bottom, width, height );
					renderer.render( scene, camera );

				} );
				renderer.enableScissorTest( false );

			}

			function rand( min, max ) {
				if ( max == undefined ) {
					max = min;
					min = 0;
				}

				return Math.random() * ( max - min ) + min;
			}

			function randColor() {
				var colors = [ rand( 256 ), rand ( 256 ), rand( 256 ) ];
				colors[ Math.random() * 3 | 0 ] = 255;
				return ( colors[0] << 16 ) |
					   ( colors[1] <<  8 ) |
					   ( colors[2] <<  0 ) ;
			}

		</script>

	</body>
</html>