mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-16 19:17:57 +01:00
174 lines
3.7 KiB
HTML
174 lines
3.7 KiB
HTML
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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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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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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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#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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a { color:red }
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</style>
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</head>
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<body>
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<div id="info">
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<a href="http://threejs.org" target="_blank">three.js</a> - level-of-details WebGL example
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</div>
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<script src="../build/three.min.js"></script>
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<script src="js/controls/FlyControls.js"></script>
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<script src="js/Detector.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script>
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if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
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var container, stats;
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var camera, scene, renderer;
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var geometry, objects;
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var controls, clock = new THREE.Clock();
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 15000 );
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camera.position.z = 1000;
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controls = new THREE.FlyControls( camera );
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controls.movementSpeed = 1000;
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controls.rollSpeed = Math.PI / 10;
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scene = new THREE.Scene();
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scene.fog = new THREE.Fog( 0x000000, 1, 15000 );
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scene.autoUpdate = false;
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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.add( light );
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var light = new THREE.DirectionalLight( 0xffffff );
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light.position.set( 0, 0, 1 ).normalize();
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scene.add( light );
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var geometry = [
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[ new THREE.IcosahedronGeometry( 100, 4 ), 50 ],
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[ new THREE.IcosahedronGeometry( 100, 3 ), 300 ],
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[ new THREE.IcosahedronGeometry( 100, 2 ), 1000 ],
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[ new THREE.IcosahedronGeometry( 100, 1 ), 2000 ],
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[ new THREE.IcosahedronGeometry( 100, 0 ), 8000 ]
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];
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var material = new THREE.MeshLambertMaterial( { color: 0xffffff, wireframe: true } );
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var i, j, mesh, lod;
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for ( j = 0; j < 1000; j ++ ) {
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lod = new THREE.LOD();
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for ( i = 0; i < geometry.length; i ++ ) {
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mesh = new THREE.Mesh( geometry[ i ][ 0 ], material );
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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.addLevel( mesh, geometry[ i ][ 1 ] );
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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.add( lod );
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}
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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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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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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function render() {
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controls.update( clock.getDelta() );
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scene.updateMatrixWorld();
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scene.traverse( function ( object ) {
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if ( object instanceof THREE.LOD ) {
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object.update( camera );
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}
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} );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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