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+<!DOCTYPE html>
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+<html>
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+ <title>three.js webgl - trackball camera - earth</title>
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+
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+ <style type="text/css">
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+
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+ body {
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+ background: #FFF;
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+ color: #EEE;
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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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+ font-family: Monospace;
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+ font-size: 13px;
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+ text-align: center;
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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;
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+ width: 100%;
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+ padding: 5px;
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+ z-index: 100;
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+ }
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+
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+ a { color: green; }
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+ b { color: green; }
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+
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+ </style>
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+
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+ <script type="text/javascript" src="../build/Three.js"></script>
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+ <script type="text/javascript" src="../src/extras/cameras/TrackballCamera.js"></script>
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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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+</head>
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+
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+<body>
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+
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+<div id="info">
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+ <a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - earth [trackball camera]<br/><br/>
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+<b>MOVE</b> mouse & press <b>LEFT/SHIFT:</b> rotate, <b>MIDDLE/ALT:</b> zoom, <b>RIGHT/CTRL:</b> pan</div>
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+
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+<script type="text/javascript">
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+
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+ if ( !Detector.webgl ) {
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+
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+ Detector.addGetWebGLMessage();
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+ return;
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+
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+ }
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+
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+ var radius = 6371,
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+ tilt = 0.41,
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+ rotationSpeed = 0.1,
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+
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+ cloudsScale = 1.005,
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+ moonScale = 0.23,
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+
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+ height = window.innerHeight,
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+ width = window.innerWidth,
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+
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+ container, stats,
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+
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+ camera, scene, renderer,
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+ geometry, meshPlanet, meshClouds, meshMoon, meshMoon2, meshMoon3,
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+ dirLight, ambientLight,
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+
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+ time = new Date().getTime();
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+
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+ window.onload = function() {
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+
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+ init();
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+ animate();
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+
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+ }
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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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+
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+ scene = new THREE.Scene();
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+
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+
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+ renderer = new THREE.WebGLRenderer( { clearAlpha: 1, clearColor: 0x000000 } );
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+ renderer.setSize( width, height );
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+ renderer.sortObjects = false;
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+ renderer.autoClear = false;
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+ container.appendChild( renderer.domElement );
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+
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+
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+ camera = new THREE.TrackballCamera({
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+
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+ fov: 25,
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+ aspect: width / height,
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+ near: 50,
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+ far: 1e7,
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+
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+ rotateSpeed: 0.6,
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+ zoomSpeed: 1.2,
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+ panSpeed: 0.2,
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+
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+ noZoom: false,
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+ noPan: false,
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+
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+ staticMoving: false,
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+ dynamicDampingFactor: 0.2,
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+
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+ minDistance: radius * 1.1,
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+ maxDistance: radius * 100,
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+
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+ keys: [ 16, 18, 17 ], // [ rotateKey, zoomKey, panKey ],
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+
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+ domElement: renderer.domElement,
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+
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+ });
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+
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+ camera.position.z = radius * 7;
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+
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+
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+ dirLight = new THREE.DirectionalLight( 0xFFFFFF );
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+ dirLight.position.set( -1, 0, 1 );
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+ dirLight.position.normalize();
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+ scene.addLight( dirLight );
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+
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+ ambientLight = new THREE.AmbientLight( 0xFFFFFF );
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+ scene.addLight( ambientLight );
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+
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+ var planetTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_atmos_2048.jpg" ),
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+ cloudsTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_clouds_1024.png" ),
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+ normalTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_normal_2048.jpg" ),
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+ specularTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_specular_2048.jpg" ),
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+ moonTexture = THREE.ImageUtils.loadTexture( "textures/planets/moon_1024.jpg" );
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+
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+ var shader = THREE.ShaderUtils.lib[ "normal" ],
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+ uniforms = THREE.UniformsUtils.clone( shader.uniforms );
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+
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+ uniforms[ "tNormal" ].texture = normalTexture;
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+ uniforms[ "uNormalScale" ].value = 0.85;
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+
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+ uniforms[ "tDiffuse" ].texture = planetTexture;
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+ uniforms[ "tSpecular" ].texture = specularTexture;
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+
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+ uniforms[ "enableAO" ].value = false;
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+ uniforms[ "enableDiffuse" ].value = true;
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+ uniforms[ "enableSpecular" ].value = true;
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+
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+ uniforms[ "uDirLightPos" ].value = dirLight.position;
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+ uniforms[ "uDirLightColor" ].value = dirLight.color;
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+
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+ uniforms[ "uAmbientLightColor" ].value = ambientLight.color;
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+
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+ uniforms[ "uDiffuseColor" ].value.setHex( 0xffffff );
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+ uniforms[ "uSpecularColor" ].value.setHex( 0xaaaaaa );
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+ uniforms[ "uAmbientColor" ].value.setHex( 0x000000 );
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+
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+ uniforms[ "uShininess" ].value = 30;
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+
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+ var materialNormalMap = new THREE.MeshShaderMaterial({
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+ fragmentShader: shader.fragmentShader,
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+ vertexShader: shader.vertexShader,
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+ uniforms: uniforms
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+ });
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+
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+
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+ // planet
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+
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+ geometry = new THREE.Sphere( radius, 100, 50 );
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+ geometry.computeTangents();
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+
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+ meshPlanet = new THREE.Mesh( geometry, materialNormalMap );
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+ meshPlanet.rotation.y = 1.3;
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+ meshPlanet.rotation.z = tilt;
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+ scene.addObject( meshPlanet );
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+
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+
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+ // clouds
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+
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+ var materialClouds = new THREE.MeshLambertMaterial( { color: 0xffffff, map: cloudsTexture, transparent:true } );
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+
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+ meshClouds = new THREE.Mesh( geometry, materialClouds );
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+ meshClouds.scale.set( cloudsScale, cloudsScale, cloudsScale );
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+ meshClouds.rotation.z = tilt;
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+ scene.addObject( meshClouds );
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+
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+
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+ // moon
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+
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+ var materialMoon = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );
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+
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+ meshMoon = new THREE.Mesh( geometry, materialMoon );
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+ meshMoon.position.set( radius * 5, 0, 0 );
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+ meshMoon.scale.set( moonScale, moonScale, moonScale );
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+ scene.addObject( meshMoon );
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+
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+
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+ // moon2
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+
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+ var materialMoon2 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );
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+
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+ meshMoon2 = new THREE.Mesh( geometry, materialMoon );
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+ meshMoon2.position.set( -radius * 7, 0, radius * 3 );
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+ meshMoon2.scale.set( moonScale, moonScale, moonScale );
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+ scene.addObject( meshMoon2 );
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+
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+
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+ // moon3
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+
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+ var materialMoon3 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );
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+
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+ meshMoon3 = new THREE.Mesh( geometry, materialMoon );
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+ meshMoon3.position.set( radius, 0, -radius * 10 );
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+ meshMoon3.scale.set( moonScale, moonScale, moonScale );
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+ scene.addObject( meshMoon3 );
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+
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+
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+ // stars
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+
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+ var i,
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+ vector,
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+ starsGeometry = new THREE.Geometry();
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+
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+ for ( i = 0; i < 1500; i++ ) {
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+
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+ vector = new THREE.Vector3( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
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+ vector.multiplyScalar( radius );
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+
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+ starsGeometry.vertices.push( new THREE.Vertex( vector ) );
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+
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+ }
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+
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+ var stars,
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+ starsMaterials = [
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+ new THREE.ParticleBasicMaterial( { color: 0x555555, size: 2, sizeAttenuation: false } ),
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+ new THREE.ParticleBasicMaterial( { color: 0x555555, size: 1, sizeAttenuation: false } ),
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+ new THREE.ParticleBasicMaterial( { color: 0x333333, size: 2, sizeAttenuation: false } ),
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+ new THREE.ParticleBasicMaterial( { color: 0x3a3a3a, size: 1, sizeAttenuation: false } ),
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+ new THREE.ParticleBasicMaterial( { color: 0x1a1a1a, size: 2, sizeAttenuation: false } ),
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+ new THREE.ParticleBasicMaterial( { color: 0x1a1a1a, size: 1, sizeAttenuation: false } )
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+ ];
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+
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+ for ( i = 10; i < 30; i++ ) {
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+
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+ stars = new THREE.ParticleSystem( starsGeometry, starsMaterials[ i % 6 ] );
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+
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+ stars.rotation.x = Math.random() * 6;
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+ stars.rotation.y = Math.random() * 6;
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+ stars.rotation.z = Math.random() * 6;
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+
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+ var s = i * 10;
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+ stars.scale.set( s, s, s );
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+
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+ stars.matrixAutoUpdate = false;
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+ stars.updateMatrix();
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+
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+ scene.addObject( stars );
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+
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+ }
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+
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+ stats = new Stats();
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+ stats.domElement.style.position = 'absolute';
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+ stats.domElement.style.top = '0px';
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+ stats.domElement.style.zIndex = 100;
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+ container.appendChild( stats.domElement );
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+
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+ window.addEventListener( 'resize', onWindowResize, false );
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+
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+ };
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+
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+ function onWindowResize( event ) {
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+
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+ width = window.innerWidth;
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+ height = window.innerHeight;
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+
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+ renderer.setSize( width, height );
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+
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+ camera.aspect = width / height;
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+ camera.updateProjectionMatrix();
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+
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+ camera.screen.width = width;
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+ camera.screen.height = height;
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+
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+ camera.radius = ( width + height ) / 4;
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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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+
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+ render();
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+ stats.update();
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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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+ var t = new Date().getTime(),
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+ dt = ( t - time ) / 1000;
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+ time = t;
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+
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+ meshPlanet.rotation.y += rotationSpeed * dt;
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+ meshClouds.rotation.y += 1.25 * rotationSpeed * dt;
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+
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+ var angle = dt * rotationSpeed;
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+
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+ meshMoon.position = rotateY( meshMoon.position, angle * 2 );
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+ meshMoon.rotation.y += angle;
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+
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+ meshMoon2.position = rotateY( meshMoon2.position, -angle * 1.5 );
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+ meshMoon2.rotation.y += angle;
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+
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+ meshMoon3.position = rotateY( meshMoon3.position, angle );
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+ meshMoon3.rotation.y += angle;
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+
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+ renderer.clear();
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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 rotateY( vector, angle ) {
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+
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+ return new THREE.Vector3(
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+ Math.cos( angle ) * vector.x - Math.sin( angle ) * vector.z,
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+ 0,
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+ Math.sin( angle ) * vector.x + Math.cos( angle ) * vector.z
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+ );
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+
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+ };
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+
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+</script>
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+</body>
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+</html>
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Eberhard Gräther