<title>three.js webgl - trackball camera - earth</title>

<style type="text/css">

body {

background: #FFF;

color: #EEE;

padding: 0;

margin: 0;

font-weight: bold;

overflow: hidden;

font-family: Monospace;

font-size: 13px;

text-align: center;

}

#info {

position: absolute;

top: 0px;

width: 100%;

padding: 5px;

z-index: 100;

}

a { color: green; }

b { color: green; }

</style>

<script type="text/javascript" src="../build/Three.js"></script>

<script type="text/javascript" src="../src/extras/cameras/TrackballCamera.js"></script>

<script type="text/javascript" src="js/Detector.js"></script>

<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>

<script type="text/javascript" src="js/Stats.js"></script>

<div id="info">

<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - earth [trackball camera]<br/><br/>

<b>MOVE</b> mouse & press <b>LEFT/SHIFT:</b> rotate, <b>MIDDLE/ALT:</b> zoom, <b>RIGHT/CTRL:</b> pan</div>

<script type="text/javascript">

if ( !Detector.webgl ) {

Detector.addGetWebGLMessage();

return;

}

var radius = 6371,

tilt = 0.41,

rotationSpeed = 0.1,

cloudsScale = 1.005,

moonScale = 0.23,

height = window.innerHeight,

width = window.innerWidth,

container, stats,

camera, scene, renderer,

geometry, meshPlanet, meshClouds, meshMoon, meshMoon2, meshMoon3,

dirLight, ambientLight,

time = new Date().getTime();

window.onload = function() {

init();

animate();

}

function init() {

container = document.createElement( 'div' );

document.body.appendChild( container );

scene = new THREE.Scene();

renderer = new THREE.WebGLRenderer( { clearAlpha: 1, clearColor: 0x000000 } );

renderer.setSize( width, height );

renderer.sortObjects = false;

renderer.autoClear = false;

container.appendChild( renderer.domElement );

camera = new THREE.TrackballCamera({

fov: 25,

aspect: width / height,

near: 50,

far: 1e7,

rotateSpeed: 0.6,

zoomSpeed: 1.2,

panSpeed: 0.2,

noZoom: false,

noPan: false,

staticMoving: false,

dynamicDampingFactor: 0.2,

minDistance: radius * 1.1,

maxDistance: radius * 100,

keys: [ 16, 18, 17 ], // [ rotateKey, zoomKey, panKey ],

domElement: renderer.domElement,

});

camera.position.z = radius * 7;

dirLight = new THREE.DirectionalLight( 0xFFFFFF );

dirLight.position.set( -1, 0, 1 );

dirLight.position.normalize();

scene.addLight( dirLight );

ambientLight = new THREE.AmbientLight( 0xFFFFFF );

scene.addLight( ambientLight );

var planetTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_atmos_2048.jpg" ),

cloudsTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_clouds_1024.png" ),

normalTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_normal_2048.jpg" ),

specularTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_specular_2048.jpg" ),

moonTexture = THREE.ImageUtils.loadTexture( "textures/planets/moon_1024.jpg" );

var shader = THREE.ShaderUtils.lib[ "normal" ],

uniforms = THREE.UniformsUtils.clone( shader.uniforms );

uniforms[ "tNormal" ].texture = normalTexture;

uniforms[ "uNormalScale" ].value = 0.85;

uniforms[ "tDiffuse" ].texture = planetTexture;

uniforms[ "tSpecular" ].texture = specularTexture;

uniforms[ "enableAO" ].value = false;

uniforms[ "enableDiffuse" ].value = true;

uniforms[ "enableSpecular" ].value = true;

uniforms[ "uDirLightPos" ].value = dirLight.position;

uniforms[ "uDirLightColor" ].value = dirLight.color;

uniforms[ "uAmbientLightColor" ].value = ambientLight.color;

uniforms[ "uDiffuseColor" ].value.setHex( 0xffffff );

uniforms[ "uSpecularColor" ].value.setHex( 0xaaaaaa );

uniforms[ "uAmbientColor" ].value.setHex( 0x000000 );

uniforms[ "uShininess" ].value = 30;

var materialNormalMap = new THREE.MeshShaderMaterial({

fragmentShader: shader.fragmentShader,

vertexShader: shader.vertexShader,

uniforms: uniforms

});

// planet

geometry = new THREE.Sphere( radius, 100, 50 );

geometry.computeTangents();

meshPlanet = new THREE.Mesh( geometry, materialNormalMap );

meshPlanet.rotation.y = 1.3;

meshPlanet.rotation.z = tilt;

scene.addObject( meshPlanet );

// clouds

var materialClouds = new THREE.MeshLambertMaterial( { color: 0xffffff, map: cloudsTexture, transparent:true } );

meshClouds = new THREE.Mesh( geometry, materialClouds );

meshClouds.scale.set( cloudsScale, cloudsScale, cloudsScale );

meshClouds.rotation.z = tilt;

scene.addObject( meshClouds );

// moon

var materialMoon = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );

meshMoon = new THREE.Mesh( geometry, materialMoon );

meshMoon.position.set( radius * 5, 0, 0 );

meshMoon.scale.set( moonScale, moonScale, moonScale );

scene.addObject( meshMoon );

// moon2

var materialMoon2 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );

meshMoon2 = new THREE.Mesh( geometry, materialMoon );

meshMoon2.position.set( -radius * 7, 0, radius * 3 );

meshMoon2.scale.set( moonScale, moonScale, moonScale );

scene.addObject( meshMoon2 );

// moon3

var materialMoon3 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: moonTexture } );

meshMoon3 = new THREE.Mesh( geometry, materialMoon );

meshMoon3.position.set( radius, 0, -radius * 10 );

meshMoon3.scale.set( moonScale, moonScale, moonScale );

scene.addObject( meshMoon3 );

// stars

var i,

vector,

starsGeometry = new THREE.Geometry();

for ( i = 0; i < 1500; i++ ) {

vector = new THREE.Vector3( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );

vector.multiplyScalar( radius );

starsGeometry.vertices.push( new THREE.Vertex( vector ) );

}

var stars,

starsMaterials = [

new THREE.ParticleBasicMaterial( { color: 0x555555, size: 2, sizeAttenuation: false } ),

new THREE.ParticleBasicMaterial( { color: 0x555555, size: 1, sizeAttenuation: false } ),

new THREE.ParticleBasicMaterial( { color: 0x333333, size: 2, sizeAttenuation: false } ),

new THREE.ParticleBasicMaterial( { color: 0x3a3a3a, size: 1, sizeAttenuation: false } ),

new THREE.ParticleBasicMaterial( { color: 0x1a1a1a, size: 2, sizeAttenuation: false } ),

new THREE.ParticleBasicMaterial( { color: 0x1a1a1a, size: 1, sizeAttenuation: false } )

];

for ( i = 10; i < 30; i++ ) {

stars = new THREE.ParticleSystem( starsGeometry, starsMaterials[ i % 6 ] );

stars.rotation.x = Math.random() * 6;

stars.rotation.y = Math.random() * 6;

stars.rotation.z = Math.random() * 6;

var s = i * 10;

stars.scale.set( s, s, s );

stars.matrixAutoUpdate = false;

stars.updateMatrix();

scene.addObject( stars );

}

stats = new Stats();

stats.domElement.style.position = 'absolute';

stats.domElement.style.top = '0px';

stats.domElement.style.zIndex = 100;

container.appendChild( stats.domElement );

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

};

function onWindowResize( event ) {

width = window.innerWidth;

height = window.innerHeight;

renderer.setSize( width, height );

camera.aspect = width / height;

camera.updateProjectionMatrix();

camera.screen.width = width;

camera.screen.height = height;

camera.radius = ( width + height ) / 4;

};

function animate() {

requestAnimationFrame( animate );

render();

stats.update();

};

function render() {

var t = new Date().getTime(),

dt = ( t - time ) / 1000;

time = t;

meshPlanet.rotation.y += rotationSpeed * dt;

meshClouds.rotation.y += 1.25 * rotationSpeed * dt;

var angle = dt * rotationSpeed;

meshMoon.position = rotateY( meshMoon.position, angle * 2 );

meshMoon.rotation.y += angle;

meshMoon2.position = rotateY( meshMoon2.position, -angle * 1.5 );

meshMoon2.rotation.y += angle;

meshMoon3.position = rotateY( meshMoon3.position, angle );

meshMoon3.rotation.y += angle;

renderer.clear();

renderer.render( scene, camera );

};

function rotateY( vector, angle ) {

return new THREE.Vector3(

Math.cos( angle ) * vector.x - Math.sin( angle ) * vector.z,

0,

Math.sin( angle ) * vector.x + Math.cos( angle ) * vector.z

);

};