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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 webgl - level-of-details</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:#000;
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+ color:#fff;
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+ padding:0;
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+ margin:0;
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+ font-weight: bold;
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+ overflow:hidden;
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+ }
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+
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+ #info {
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+ position: absolute;
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+ top: 0px; width: 100%;
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+ color: #ffffff;
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+ padding: 5px;
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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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+ z-index:100;
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+ }
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+
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+ a { color:red }
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+
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+ </style>
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+ </head>
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+
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+ <body>
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+ <div id="info">
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+ <a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - level-of-details WebGL example
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+ </div>
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+
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+
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+ <script type="text/javascript" src="../build/Three.js"></script>
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+
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+ <script type="text/javascript" src="js/Detector.js"></script>
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+ <script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
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+ <script type="text/javascript" src="js/Stats.js"></script>
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+
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+ <!--
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+ <script type="text/javascript" src="../src/extras/geometries/Curve.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/CurvePath.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/Path.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/Shape.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/TextPath.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/ExtrudeGeometry.js"></script>
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+ <script type="text/javascript" src="../src/extras/geometries/TextGeometry.js"></script>
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+ -->
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+
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+
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+ <!-- load the font file from canvas-text -->
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+
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+ <script type="text/javascript" src="fonts/helvetiker_regular.typeface.js"></script>
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+
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+ <script type="text/javascript">
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+
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+ if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
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+
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+ var container, stats;
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+
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+ var camera, scene, renderer;
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+
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+ var geometry, objects;
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+
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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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+ document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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+
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+ init();
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+ animate();
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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( 45, window.innerWidth / window.innerHeight, 1, 15000 );
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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.Fog( 0x000000, 1, 15000 );
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+
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+ var light = new THREE.PointLight( 0xff2200 );
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+ light.position.set( 0, 0, 0 );
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+ scene.addLight( light );
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+
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+ var light = new THREE.DirectionalLight( 0xffffff );
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+ light.position.set( 0, 0, 1 );
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+ light.position.normalize();
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+ scene.addLight( light );
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+
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+ var wireMaterial = new THREE.MeshLambertMaterial( { color: 0x000000, wireframe: true } );
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+
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+ function getOptionsWithSegments(x,b, bevel) {
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+ return {
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+
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+ size: 80,
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+ height: 20,
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+ curveSegments: x,
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+ font: "helvetiker",
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+ bevelSegments: b,
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+ bevelEnabled: bevel,
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+ bevelThickness:8,
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+ bevelSize: 3,
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+ steps: 1,
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+ amount: 20,
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+
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+ };
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+ };
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+
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+ var theText = "&"; // Try $ :)
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+
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+ // we could use TextPath and ExtrudeGeometry if we wish to optimize stuff futher
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+ var geometry = [
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+
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+ [ new THREE.TextGeometry( theText, getOptionsWithSegments(8, 6, true)),
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+ 300, [ new THREE.MeshPhongMaterial( { color: 0xffee00 } ), wireMaterial ] ],
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+ [ new THREE.TextGeometry( theText, getOptionsWithSegments(5,2, true)),
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+ 800, [ new THREE.MeshLambertMaterial( { color: 0xffaa00 } ), wireMaterial ]],
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+ [ new THREE.TextGeometry( theText, getOptionsWithSegments(2,1, true)),
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+ 1000, [ new THREE.MeshLambertMaterial( { color: 0x005500 } ), wireMaterial ] ],
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+ [ new THREE.TextGeometry( theText, getOptionsWithSegments(2,1,false)),
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+ 2000, [ new THREE.MeshLambertMaterial( { color: 0x0055ff } ), wireMaterial ]],
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+ [ new THREE.TextGeometry( theText, getOptionsWithSegments(1,1, false)),
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+ 10000, [ new THREE.MeshLambertMaterial( { color: 0xff1100 } ), wireMaterial ]]
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+
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+ ];
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+
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+ var i, j, mesh, lod;
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+
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+ for ( j = 0; j < 1000; j ++ ) {
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+
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+ lod = new THREE.LOD();
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+
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+ for ( i = 0; i < geometry.length; i++ ) {
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+
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+ mesh = new THREE.Mesh( geometry[ i ][ 0 ], geometry[ i ][ 2 ] );
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+ mesh.scale.set( 1.5, 1.5, 1.5 );
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+ mesh.updateMatrix();
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+ mesh.matrixAutoUpdate = false;
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+ lod.add( mesh, geometry[ i ][ 1 ] );
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+
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+ }
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+
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+ lod.position.x = 10000 * ( 0.5 - Math.random() );
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+ lod.position.y = 7500 * ( 0.5 - Math.random() );
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+ lod.position.z = 10000 * ( 0.5 - Math.random() );
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+ lod.updateMatrix();
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+ lod.matrixAutoUpdate = false;
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+ scene.addObject( lod );
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+
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+ }
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+
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+
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+
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+ renderer = new THREE.WebGLRenderer( { clearColor:0x000000, clearAlpha: 1 } );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.sortObjects = false;
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+ container.appendChild( renderer.domElement );
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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 ) * 10;
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+ mouseY = ( event.clientY - windowHalfY ) * 10;
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+
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+ }
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+
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+ function animate() {
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+
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+ requestAnimationFrame( animate );
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+ render();
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+
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+ }
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+
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+ function render() {
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+
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+ camera.position.x += ( mouseX - camera.position.x ) * .005;
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+ camera.position.y += ( - mouseY - camera.position.y ) * .01;
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ function log( text ) {
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+
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+ var e = document.getElementById("log");
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+ e.innerHTML = text + "<br/>" + e.innerHTML;
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+
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+ }
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+
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+ </script>
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+
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+ </body>
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+</html>
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zz85