javascript
/
three.js
miroir de https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html>
	<title>three.js webgl - fly 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: #0080ff;
	}
	
	b { color:orange }
	
	</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 [fly camera]<br/><br/>
<b>WASD</b> move, <b>R|F</b> up | down, <b>Q|E</b> roll, <b>up|down</b> pitch, <b>left|right</b> yaw<br/>
</div>

<script type="text/javascript">

	if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

	var radius = 6371;
	var tilt = 0.41;
	var rotationSpeed = 0.02;

	var cloudsScale = 1.005;
	var moonScale = 0.23;

	var MARGIN = 0;
	var SCREEN_HEIGHT = window.innerHeight - MARGIN * 2;
	var SCREEN_WIDTH  = window.innerWidth;
	
	var ENABLE_LENSFLARES = false;

	var lensFlare, lensFlareRotate;
	
	var container, stats;
	var camera, scene, sceneCube, renderer;
	var geometry, meshPlanet, meshClouds, meshMoon;
	var dirLight, pointLight, ambientLight;
	var lastUpdate = new Date().getTime();

	var t, d, dPlanet, dMoon, dMoonVec = new THREE.Vector3();

	var postprocessing = { enabled : true, bloom: false };
	
	init();
	animate();

	function init() {
		
		container = document.createElement( 'div' );
        document.body.appendChild( container ); 

        camera = new THREE.FlyCamera({
		
			fov: 25, 
			aspect: SCREEN_WIDTH / SCREEN_HEIGHT,
			movementSpeed: 1000,
			domElement: container,
			rollSpeed: Math.PI / 24,
			autoForward: false,
			dragToLook: false,
			near: 50,
			far: 1e7

        });

        camera.position.z = radius * 5;

        scene = new THREE.Scene();
		scene.fog = new THREE.FogExp2( 0x000000, 0.00000025 );
		
        dirLight = new THREE.DirectionalLight( 0xffffff );
        dirLight.position.set( -1, 0, 1 );
        dirLight.position.normalize();
        scene.addLight( dirLight );

        pointLight = new THREE.PointLight( 0x000000 );
        pointLight.position.set( -5000, 0, 5000 );
        //scene.addLight( pointLight );
		
		ambientLight = new THREE.AmbientLight( 0x000000 );
		scene.addLight( ambientLight );

		var planetTexture   = THREE.ImageUtils.loadTexture( "textures/planets/earth_atmos_2048.jpg" );
		var cloudsTexture   = THREE.ImageUtils.loadTexture( "textures/planets/earth_clouds_1024.png" );
		var normalTexture   = THREE.ImageUtils.loadTexture( "textures/planets/earth_normal_2048.jpg" );
		var specularTexture = THREE.ImageUtils.loadTexture( "textures/planets/earth_specular_2048.jpg" );

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

		var shader = THREE.ShaderUtils.lib[ "normal" ];
		var 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[ "uPointLightPos" ].value = pointLight.position;
		uniforms[ "uPointLightColor" ].value = pointLight.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 parameters = { fragmentShader: shader.fragmentShader, vertexShader: shader.vertexShader, uniforms: uniforms };
		var materialNormalMap = new THREE.MeshShaderMaterial( parameters );

		// 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 );

		// stars
		
		var i, r = radius,
			starsGeometry = [ new THREE.Geometry(), new THREE.Geometry() ];
 
		for ( i = 0; i < 250; ++i ) {

			vector1 = new THREE.Vector3( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
			vector1.multiplyScalar( r );

			starsGeometry[ 0 ].vertices.push( new THREE.Vertex( vector1 ) );

		}

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

			vector1 = new THREE.Vector3( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
			vector1.multiplyScalar( r );

			starsGeometry[ 1 ].vertices.push( new THREE.Vertex( vector1 ) );

		}

		var stars;
		var 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[ i % 2 ], starsMaterials[ i % 6 ] );
			stars.rotation.x = Math.random() * 6;
			stars.rotation.y = Math.random() * 6;
			stars.rotation.z = Math.random() * 6;
			
			s = i * 10;
			stars.scale.set( s, s, s );
			
			stars.matrixAutoUpdate = false;
			stars.updateMatrix();
			
			scene.addObject( stars );
			
		}

		if ( ENABLE_LENSFLARES ) {
		
			lensFlare = new THREE.LensFlare( THREE.ImageUtils.loadTexture( "textures/lensflare/lensflare0.png" ), 700, 0.0, THREE.AdditiveBlending );
			
			lensFlare.add( THREE.ImageUtils.loadTexture( "textures/lensflare/lensflare2.png" ), 512, 0.0, THREE.AdditiveBlending );
			lensFlare.add( lensFlare.lensFlares[ 1 ].texture, 512, 0.0, THREE.AdditiveBlending );
			lensFlare.add( lensFlare.lensFlares[ 1 ].texture, 512, 0.0, THREE.AdditiveBlending );
			
			lensFlare.add( THREE.ImageUtils.loadTexture( "textures/lensflare/lensflare3.png" ), 60, 0.6, THREE.AdditiveBlending );
			lensFlare.add( lensFlare.lensFlares[ 4 ].texture, 70, 0.7, THREE.AdditiveBlending );
			lensFlare.add( lensFlare.lensFlares[ 4 ].texture, 120, 0.9, THREE.AdditiveBlending );
			lensFlare.add( lensFlare.lensFlares[ 4 ].texture, 70, 1.0, THREE.AdditiveBlending );
			
			lensFlare.customUpdateCallback = lensFlareUpdateCallback;
			lensFlare.position.set( 0, 0, -99000 );
			
			
			lensFlareRotate = new THREE.Object3D();
			lensFlareRotate.addChild( lensFlare );
			
			scene.addChild( lensFlareRotate );
			
			lensFlareRotate.rotation.x = Math.PI;
			lensFlareRotate.rotation.y = Math.PI / 2;
			
		}

        renderer = new THREE.WebGLRenderer( { clearAlpha: 1, clearColor: 0x000000 } );
        renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
        renderer.sortObjects = false;

		initPostprocessing();
		renderer.autoClear = false;

        container.appendChild( renderer.domElement );

        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 ) {

		SCREEN_HEIGHT = window.innerHeight;
		SCREEN_WIDTH  = window.innerWidth;

		renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );

		camera.aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
		camera.updateProjectionMatrix();

		initPostprocessing();

	}

	function initPostprocessing() {

		postprocessing.scene = new THREE.Scene();

		postprocessing.camera = new THREE.Camera();
		postprocessing.camera.projectionMatrix = THREE.Matrix4.makeOrtho( SCREEN_WIDTH / - 2, SCREEN_WIDTH / 2,  SCREEN_HEIGHT / 2, SCREEN_HEIGHT / - 2, -10000, 10000 );
		postprocessing.camera.position.z = 100;

		var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBAFormat };
		postprocessing.rtTexture1 = new THREE.WebGLRenderTarget( SCREEN_WIDTH, SCREEN_HEIGHT, pars );
		postprocessing.rtTexture2 = new THREE.WebGLRenderTarget( 512, 512, pars );
		postprocessing.rtTexture3 = new THREE.WebGLRenderTarget( 512, 512, pars );

		var screen_shader = THREE.ShaderUtils.lib["screen"];
		var screen_uniforms = THREE.UniformsUtils.clone( screen_shader.uniforms );

		screen_uniforms["tDiffuse"].texture = postprocessing.rtTexture1;
		screen_uniforms["opacity"].value = 1.0;

		postprocessing.materialScreen = new THREE.MeshShaderMaterial( {

			uniforms: screen_uniforms,
			vertexShader: screen_shader.vertexShader,
			fragmentShader: screen_shader.fragmentShader,
			blending: THREE.AdditiveBlending,
			transparent: true

		} );

		var convolution_shader = THREE.ShaderUtils.lib["convolution"];
		var convolution_uniforms = THREE.UniformsUtils.clone( convolution_shader.uniforms );

		postprocessing.blurx = new THREE.Vector2( 0.001953125, 0.0 ),
		postprocessing.blury = new THREE.Vector2( 0.0, 0.001953125 );

		convolution_uniforms["tDiffuse"].texture = postprocessing.rtTexture1;
		convolution_uniforms["uImageIncrement"].value = postprocessing.blurx;
		convolution_uniforms["cKernel"].value = THREE.ShaderUtils.buildKernel( 4.0 );

		postprocessing.materialConvolution = new THREE.MeshShaderMaterial( {

			uniforms: convolution_uniforms,
			vertexShader:   "#define KERNEL_SIZE 25.0\n" + convolution_shader.vertexShader,
			fragmentShader: "#define KERNEL_SIZE 25\n"   + convolution_shader.fragmentShader

		} );

		var film_shader = THREE.ShaderUtils.lib["film"];
		var film_uniforms = THREE.UniformsUtils.clone( film_shader.uniforms );

		film_uniforms["tDiffuse"].texture = postprocessing.rtTexture1;

		postprocessing.materialFilm = new THREE.MeshShaderMaterial( { uniforms: film_uniforms, vertexShader: film_shader.vertexShader, fragmentShader: film_shader.fragmentShader } );
		postprocessing.materialFilm.uniforms.grayscale.value = 0;
		postprocessing.materialFilm.uniforms.nIntensity.value = 0.35;
		postprocessing.materialFilm.uniforms.sIntensity.value = 0.75;
		postprocessing.materialFilm.uniforms.sCount.value = 2048;

		postprocessing.quad = new THREE.Mesh( new THREE.Plane( SCREEN_WIDTH, SCREEN_HEIGHT ), postprocessing.materialConvolution );
		postprocessing.quad.position.z = - 500;
		postprocessing.scene.addObject( postprocessing.quad );

	};

	function cap_bottom( val, bottom ) {
	
		return val < bottom ? bottom : val;

	};
	
	function lensFlareUpdateCallback( object ) {

		var f, fl = object.lensFlares.length;
		var flare;
		var vecX = -object.positionScreen.x * 2;
		var vecY = -object.positionScreen.y * 2; 


		for( f = 0; f < fl; f++ ) {
			   
			   flare = object.lensFlares[ f ];
			   
			   flare.x = object.positionScreen.x + vecX * flare.distance;
			   flare.y = object.positionScreen.y + vecY * flare.distance;

			   flare.rotation = 0;
			   
			   flare.opacity = cap_bottom( 1 - 0.01 * d / radius, 0 );

		}

		// hard coded stuff

		object.lensFlares[ 2 ].y += 0.025;
		object.lensFlares[ 3 ].rotation = object.positionScreen.x * 0.5 + 45 * Math.PI / 180;

	};

	function animate() {

		requestAnimationFrame( animate );
 
        render();
        stats.update();

	};

	
	function cap( val, bottom ) {
	
		return val > bottom ? val : bottom;

	};

	function render() {

		// rotate the planet and clouds

		t = this.getFrametime();

        meshPlanet.rotation.y += rotationSpeed * t; 
		meshClouds.rotation.y += 1.25 * rotationSpeed * t;
		
		// slow down as we approach the surface

		dPlanet = camera.position.length();

		dMoonVec.sub( camera.position, meshMoon.position );
		dMoon = dMoonVec.length();
		
		if ( dMoon < dPlanet ) {

			d = ( dMoon - radius * moonScale * 1.01 );

		} else {
		
			d = ( dPlanet - radius * 1.01 );

		}
		
        camera.movementSpeed = 0.33 * d;

		if ( ENABLE_LENSFLARES ) {
		
			lensFlareRotate.position.set( camera.position.x, camera.position.y, camera.position.z );
			
		}
		
		if ( postprocessing.enabled ) {

			renderer.clear();

			// Render scene into texture

			renderer.render( scene, camera, postprocessing.rtTexture1, true );

			if ( postprocessing.bloom ) {
			
				// Render quad with blured scene into texture (convolution pass 1)

				postprocessing.quad.materials = [ postprocessing.materialConvolution ];

				postprocessing.materialConvolution.uniforms.tDiffuse.texture = postprocessing.rtTexture1;
				postprocessing.materialConvolution.uniforms.uImageIncrement.value = postprocessing.blurx;

				renderer.render( postprocessing.scene, postprocessing.camera, postprocessing.rtTexture2, true );

				// Render quad with blured scene into texture (convolution pass 2)

				postprocessing.materialConvolution.uniforms.tDiffuse.texture = postprocessing.rtTexture2;
				postprocessing.materialConvolution.uniforms.uImageIncrement.value = postprocessing.blury;

				renderer.render( postprocessing.scene, postprocessing.camera, postprocessing.rtTexture3, true );

				// Render original scene with superimposed blur to texture

				postprocessing.quad.materials = [ postprocessing.materialScreen ];

				postprocessing.materialScreen.uniforms.tDiffuse.texture = postprocessing.rtTexture3;
				postprocessing.materialScreen.uniforms.opacity.value = 0.75;

				renderer.render( postprocessing.scene, postprocessing.camera, postprocessing.rtTexture1, false );

			}
			
			// Render to screen

			postprocessing.materialFilm.uniforms.time.value += 0.01;
			postprocessing.quad.materials = [ postprocessing.materialFilm ];

			postprocessing.materialScreen.uniforms.tDiffuse.texture = postprocessing.rtTexture1;
			renderer.render( postprocessing.scene, postprocessing.camera );

		} else {

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

		}

	};
	
	function getFrametime() {

        var now = new Date().getTime();
        var tdiff = ( now - lastUpdate ) / 1000;
        lastUpdate = now;
        return tdiff;

	};

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