javascript
/
three.js
огледало од https://github.com/tazdij/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - buffergeometry</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: #808080;
				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;
			}

			a {

				color: #0080ff;
			}

		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> webgl - buffergeometry</div>

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

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

		<script>

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

			var container, stats;

			var camera, scene, renderer;

			var mesh;

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 20, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 1800;

				scene = new THREE.Scene();

				var triangles = 10000;

				var geometry = new THREE.BufferGeometry();
				geometry.attributes = {
					index: {
						itemSize: 1,
						array: new Int16Array( triangles * 3 ),
						numItems: triangles * 3
					},
					position: {
						itemSize: 3,
						array: new Float32Array( triangles * 3 * 3 ),
						numItems: triangles * 3 * 3
					}
				}

				var indices = geometry.attributes.index.array;

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

					indices[ i ] = i;

				}

				var positions = geometry.attributes.position.array;

				for ( var i = 0; i < positions.length; i += 9 ) {

					var x = Math.random() * 400 - 200;
					var y = Math.random() * 400 - 200;
					var z = Math.random() * 400 - 200;

					positions[ i ] = x + Math.random() * 40 - 20;
					positions[ i + 1 ] = y + Math.random() * 40 - 20;
					positions[ i + 2 ] = z + Math.random() * 40 - 20;

					positions[ i + 3 ] = x + Math.random() * 40 - 20;
					positions[ i + 4 ] = y + Math.random() * 40 - 20;
					positions[ i + 5 ] = z + Math.random() * 40 - 20;

					positions[ i + 6 ] = x + Math.random() * 40 - 20;
					positions[ i + 7 ] = y + Math.random() * 40 - 20;
					positions[ i + 8 ] = z + Math.random() * 40 - 20;

				}

				geometry.offsets = [{
					start: 0,
					count: triangles * 3,
					index: 0
				}]

				geometry.computeBoundingSphere();
				geometry.computeVertexNormals();

				var material = new THREE.MeshNormalMaterial( { side: THREE.DoubleSide } );

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

				renderer = new THREE.WebGLRenderer( { antialias: false } );
				renderer.setSize( window.innerWidth, window.innerHeight );

				container.appendChild( renderer.domElement );

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

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				mesh.rotation.x += 0.01;
				mesh.rotation.y += 0.02;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>