javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


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

	<style type="text/css">

		body {
			background: #000;
			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="js/Detector.js"></script>
	<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
	<script type="text/javascript" src="js/Stats.js"></script>

</head>

<body>

<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/A:</b> rotate, <b>MIDDLE/S:</b> zoom, <b>RIGHT/D:</b> pan
</div>

<script type="text/javascript">

	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,
	dirLight, ambientLight,

	time = new Date().getTime();

	window.onload = function() {

		if ( !Detector.webgl ) {

			Detector.addGetWebGLMessage();
			return;

		}

		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: 1.0,
			zoomSpeed: 1.2,
			panSpeed: 0.2,

			noZoom: false,
			noPan: false,

			staticMoving: false,
			dynamicDampingFactor: 0.3,

			minDistance: radius * 1.1,
			maxDistance: radius * 100,

			keys: [ 65, 83, 68 ], // [ 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[ "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,
			lights: true
		});


		// planet

		geometry = new THREE.SphereGeometry( 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 );


		// 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 = new THREE.Vector3(
			Math.cos( angle ) * meshMoon.position.x - Math.sin( angle ) * meshMoon.position.z,
			0,
			Math.sin( angle ) * meshMoon.position.x + Math.cos( angle ) * meshMoon.position.z
		);
		meshMoon.rotation.y -= angle;

		renderer.clear();
		renderer.render( scene, camera );

	};

</script>
</body>
</html>