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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - buffergeometry - lines</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: #cccccc;
- font-family:Monospace;
- font-size:13px;
- text-align:center;
- background-color: #000000;
- 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://threejs.org" target="_blank">three.js</a> webgl - buffergeometry - lines</div>
- <script src="../build/three.js"></script>
- <script src="js/Detector.js"></script>
- <script src="js/libs/stats.min.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( 27, window.innerWidth / window.innerHeight, 1, 4000 );
- camera.position.z = 2750;
- scene = new THREE.Scene();
- var segments = 10000;
- var geometry = new THREE.BufferGeometry();
- var material = new THREE.LineBasicMaterial({ vertexColors: THREE.VertexColors });
- var positions = new Float32Array( segments * 3 );
- var colors = new Float32Array( segments * 3 );
- var r = 800;
- for ( var i = 0; i < segments; i ++ ) {
- var x = Math.random() * r - r / 2;
- var y = Math.random() * r - r / 2;
- var z = Math.random() * r - r / 2;
- // positions
- positions[ i * 3 ] = x;
- positions[ i * 3 + 1 ] = y;
- positions[ i * 3 + 2 ] = z;
- // colors
- colors[ i * 3 ] = ( x / r ) + 0.5;
- colors[ i * 3 + 1 ] = ( y / r ) + 0.5;
- colors[ i * 3 + 2 ] = ( z / r ) + 0.5;
- }
- geometry.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
- geometry.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );
- geometry.computeBoundingSphere();
- mesh = new THREE.Line( geometry, material );
- scene.add( mesh );
- //
- renderer = new THREE.WebGLRenderer( { antialias: false } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.gammaInput = true;
- renderer.gammaOutput = true;
- container.appendChild( renderer.domElement );
- //
- stats = new Stats();
- container.appendChild( stats.dom );
- //
- window.addEventListener( 'resize', onWindowResize, false );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- //
- function animate() {
- requestAnimationFrame( animate );
- render();
- stats.update();
- }
- function render() {
- var time = Date.now() * 0.001;
- mesh.rotation.x = time * 0.25;
- mesh.rotation.y = time * 0.5;
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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