From 61ca6974b7d617798c62ada2ed8f53a8adb767ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eberhard=20Gr=C3=A4ther?= <ebsigraether@hotmail.com>
Date: Sun, 29 May 2011 15:49:26 +0200
Subject: [PATCH] added modified earth example for TrackballCamera

---
 examples/webgl_trackballcamera_earth.html | 338 ++++++++++++++++++++++
 1 file changed, 338 insertions(+)
 create mode 100644 examples/webgl_trackballcamera_earth.html
diff --git a/examples/webgl_trackballcamera_earth.html b/examples/webgl_trackballcamera_earth.html
new file mode 100644
index 00000000..24999fd9
--- /dev/null
+++ b/examples/webgl_trackballcamera_earth.html
@@ -0,0 +1,338 @@
+<!DOCTYPE html>
+<html>
+	<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>
+
+</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/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
+		);
+
+	};
+
+</script>
+</body>
+</html>
