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


			
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							<!DOCTYPE HTML>
<html lang="en">
	<head>
		<title>three.js webgl - geometry - text</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
		<style type="text/css">
			body {
				font-family: Monospace;
				background-color: #000;
				color: #fff;
				margin: 0px;
				overflow: hidden;
			}
			#info {
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				z-index: 100;
				display:block;
			}
			#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
		</style>
	</head>
	<body>

		<div id="info">
		<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - procedural 3D text by <a href="http://www.lab4games.net/zz85/blog" target="_blank">zz85</a> &amp; alteredq 
		(fonts from <a href="http://typeface.neocracy.org/">typeface.js</a> and <a href="http://en.wikipedia.org/wiki/Droid_%28font%29">Droid</a>)
		<br/>type to enter new text, drag to spin the text
		<br/><span class="button" id="color">change color</span>, 
			<span class="button" id="font">change font</span>, 
			<span class="button" id="weight">change weight</span>, 
			<span class="button" id="postprocessing">change postprocessing</span>, 
			<a id="permalink" href="#">permalink</a>
		</div>


		<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>
		      
		<!-- load the font file from canvas-text -->

		<!--
		
		
		-->
		<script type="text/javascript" src="fonts/gentilis_bold.typeface.js"></script>
		<script type="text/javascript" src="fonts/gentilis_regular.typeface.js"></script>
		<script type="text/javascript" src="fonts/optimer_bold.typeface.js"></script>
		<script type="text/javascript" src="fonts/optimer_regular.typeface.js"></script>
		<script type="text/javascript" src="fonts/helvetiker_bold.typeface.js"></script>
		<script type="text/javascript" src="fonts/helvetiker_regular.typeface.js"></script>
		<script type="text/javascript" src="fonts/droid/droid_sans_regular.typeface.js"></script>
		<script type="text/javascript" src="fonts/droid/droid_sans_bold.typeface.js"></script>
		<script type="text/javascript" src="fonts/droid/droid_serif_regular.typeface.js"></script>
		<script type="text/javascript" src="fonts/droid/droid_serif_bold.typeface.js"></script>
		

		<script type="text/javascript">

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

			var container, stats, permalink, hex, color;

			var camera, scene, renderer;

			var textMesh1, textMesh2, textGeo, textMaterial, parent;

			var firstLetter = true;
			
			var text = "three.js",
				height = 20,
				size = 80,
				hover = 30,
				curveSegments = 6,
				font = "optimer", 		// helvetiker, optimer, gentilis, droid sans, droid serif
				weight = "bold",		// normal bold
				style = "normal";		// normal italic

			var mirror = true;
			
			var fontMap = {
			"helvetiker"  : 0,
			"optimer"  	  : 1,
			"gentilis" 	  : 2,
			"droid sans"  : 3,
			"droid serif" : 4
			
			};
			
			var weightMap = {
			"normal"	: 0,
			"bold"		: 1
			}

			var reverseFontMap = {};
			var reverseWeightMap = {};
			
			for ( var i in fontMap ) reverseFontMap[ fontMap[i] ] = i;
			for ( var i in weightMap ) reverseWeightMap[ weightMap[i] ] = i;
			
			var targetRotation = 0;
			var targetRotationOnMouseDown = 0;

			var mouseX = 0;
			var mouseXOnMouseDown = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

			var postprocessing = { enabled : true };
			var glow = 0.9;

			init();
			animate();

			function capitalize( txt ) {
			
				return txt.substring( 0, 1 ).toUpperCase() + txt.substring( 1 );

			}
			
			function decimalToHex( d ) {
  
				var hex = Number( d ).toString( 16 );
				hex = "000000".substr( 0, 6 - hex.length ) + hex; 
				return hex.toUpperCase();

			}
			
			function init() {

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

				permalink = document.getElementById( "permalink" );
				
				camera = new THREE.Camera( 30, window.innerWidth / window.innerHeight, 1, 1500 );
				camera.position.y = 400;
				camera.position.z = 700;
				camera.target.position.y = 100;

				scene = new THREE.Scene();
				
				scene.fog = new THREE.Fog( 0x000000, 250, 1400 );

				var dirLight = new THREE.DirectionalLight( 0xffffff, 0.125 );
				dirLight.position.set( 0, 0, 1 );
				dirLight.position.normalize();
				scene.addLight( dirLight );

				var pointLight = new THREE.PointLight( 0xffffff, 1.5 );
				pointLight.position.set( 0, 100, 50 );
				scene.addLight( pointLight );				

				//text = capitalize( font ) + " " + capitalize( weight );
				//text = "abcdefghijklmnopqrstuvwxyz0123456789";
				//text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

				// Get text from hash

				var hash = document.location.hash.substr( 1 );
				
				if ( hash.length !== 0 ) {
                   
					var colorhash  = hash.substring( 0, 6 );
					var fonthash   = hash.substring( 6, 7 );
					var weighthash = hash.substring( 7, 8 );
					var pphash 	   = hash.substring( 8, 9 );
					var texthash   = hash.substring( 10 );					

					hex = colorhash;
					pointLight.color.setHex( parseInt( colorhash, 16 ) );
					
					font = reverseFontMap[ parseInt( fonthash ) ];
					weight = reverseWeightMap[ parseInt( weighthash ) ];
					
					postprocessing.enabled = parseInt( pphash );
					
					text = decodeURI( texthash );

					updatePermalink();

				} else {

					pointLight.color.setHSV( Math.random(), 0.95, 0.85 );					
					pointLight.color.updateHex();
					hex = decimalToHex( pointLight.color.hex );

				}
				
                textGeo = new THREE.Text( text, {

					size: size, 
					height: height,
					curveSegments: curveSegments,
					font: font,
					weight: weight,
					style: style

				});
				
                textMaterial = new THREE.MeshPhongMaterial( { color: 0xffffff, wireframe: false } );
				
				parent = new THREE.Object3D();
				
				textMesh1 = new THREE.Mesh( textGeo, textMaterial );

                textMesh1.position.x = 0;
                textMesh1.position.y = hover;
                textMesh1.position.z = 0;

                textMesh1.rotation.x = 0;
                textMesh1.rotation.y = Math.PI * 2;

                parent.addChild( textMesh1 );

				if ( mirror ) {

					textMesh2 = new THREE.Mesh( textGeo, textMaterial );

					textMesh2.position.x = 0;
					textMesh2.position.y = -hover;
					textMesh2.position.z = height;

					textMesh2.rotation.x = Math.PI;
					textMesh2.rotation.y = Math.PI * 2;

					parent.addChild( textMesh2 );
					
				}

				parent.position.y = 100;
				scene.addChild( parent );

				var plane = new THREE.Mesh( new THREE.Plane( 10000, 10000 ), new THREE.MeshBasicMaterial( { color: 0xffffff, opacity: 0.5, transparent: true } ) );
				plane.rotation.x = -1.57;
				plane.position.y = 100;
				scene.addChild( plane );

				renderer = new THREE.WebGLRenderer( { antialias: false } );
                renderer.setSize( window.innerWidth, window.innerHeight );
				
				renderer.setClearColor( scene.fog.color, 1 );

				container.appendChild( renderer.domElement );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				//container.appendChild( stats.domElement );

				document.addEventListener( 'mousedown', onDocumentMouseDown, false );
				document.addEventListener( 'touchstart', onDocumentTouchStart, false );
				document.addEventListener( 'touchmove', onDocumentTouchMove, false );
				document.addEventListener( 'keypress', onDocumentKeyPress, false );
				document.addEventListener( 'keydown', onDocumentKeyDown, false );

				document.getElementById( "color" ).addEventListener( 'click', function() {
				
					pointLight.color.setHSV( Math.random(), 0.95, 0.85 );
					pointLight.color.updateHex();
					hex = decimalToHex( pointLight.color.hex );
					
					updatePermalink();					
					
				}, false );

				document.getElementById( "font" ).addEventListener( 'click', function() {
				
					if ( font == "helvetiker" ) {

						font = "optimer";

					} else if ( font == "optimer" ) {
						
						font = "gentilis";
						
					} else if ( font == "gentilis" ) {
						
						font = "droid sans";
						
					} else if ( font == "droid sans" ) {
						
						font = "droid serif";

					} else {
					
						font = "helvetiker";
						
					}
					
					refreshText();
					
				}, false );

				document.getElementById( "weight" ).addEventListener( 'click', function() {
				
					if ( weight == "bold" ) {

						weight = "normal";

					} else {
					
						weight = "bold";
						
					}
					
					refreshText();
					
				}, false );

				document.getElementById( "postprocessing" ).addEventListener( 'click', function() {
				
					postprocessing.enabled = !postprocessing.enabled;
					updatePermalink();
					
				}, false );

				initPostprocessing();
				renderer.autoClear = false;

			}
			
			//
			
			function boolToNum( b ) {
				
				return b ? 1 : 0;

			}
			
			function updatePermalink() {
			
				var link = hex + fontMap[ font ] + weightMap[ weight ] + boolToNum( postprocessing.enabled ) + "#" + encodeURI( text );
				
				permalink.href = "#" + link;
				window.location.hash = link;

			}

			function onDocumentKeyDown( event ) {

				if ( firstLetter ) {
				
					firstLetter = false;
					text = "";

				}
				
				var keyCode = event.keyCode;
				
				// backspace

				if ( keyCode == 8 ) {

					event.preventDefault();

					text = text.substring( 0, text.length - 1 );
					refreshText();

					return false;
					
				}

			}
			
			function onDocumentKeyPress( event ) {
				
				var keyCode = event.which;
				
				// backspace

				if ( keyCode == 8 ) {
					
					event.preventDefault();					
					
				} else {
				
					var ch = String.fromCharCode( keyCode );
					text += ch;

					refreshText();

				}

			}
			
			function refreshText() {

				updatePermalink();
				
				scene.removeChild( textMesh1 );

                textGeo = new THREE.Text( text, {

					size: size, 
					height: height,
					curveSegments: curveSegments,
					font: font,
					weight: weight,
					style: style

				});

				textMesh1 = new THREE.Mesh( textGeo, textMaterial );

                textMesh1.position.x = 0;
                textMesh1.position.y = hover;
                textMesh1.position.z = 0;

                textMesh1.rotation.x = 0;
                textMesh1.rotation.y = Math.PI * 2;

				parent.addChild( textMesh1 );

				if ( mirror ) {

					scene.removeChild( textMesh2 );

					textMesh2 = new THREE.Mesh( textGeo, textMaterial );

					textMesh2.position.x = 0;
					textMesh2.position.y = -hover;
					textMesh2.position.z = height;

					textMesh2.rotation.x = Math.PI;
					textMesh2.rotation.y = Math.PI * 2;
					
					
					parent.addChild( textMesh2 );
					
				}

			}
			
			function onDocumentMouseDown( event ) {

				event.preventDefault();

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
				document.addEventListener( 'mouseout', onDocumentMouseOut, false );

				mouseXOnMouseDown = event.clientX - windowHalfX;
				targetRotationOnMouseDown = targetRotation;

			}

			function onDocumentMouseMove( event ) {

				mouseX = event.clientX - windowHalfX;

				targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;

			}

			function onDocumentMouseUp( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );

			}

			function onDocumentMouseOut( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );

			}

			function onDocumentTouchStart( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
					targetRotationOnMouseDown = targetRotation;

				}

			}

			function onDocumentTouchMove( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;

				}

			}

			//
			
			function initPostprocessing() {

				postprocessing.scene = new THREE.Scene();

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

				var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat };
				postprocessing.rtTexture1 = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, 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 = 0.15;
				postprocessing.materialFilm.uniforms.sIntensity.value = 0.25;
				postprocessing.materialFilm.uniforms.sCount.value = 2048;

				//postprocessing.materialFilm.uniforms.nIntensity.value = 0;
				//postprocessing.materialFilm.uniforms.sIntensity.value = 0;

				postprocessing.materialScreen.uniforms.opacity.value = glow;

				postprocessing.quad = new THREE.Mesh( new THREE.Plane( window.innerWidth, window.innerHeight ), postprocessing.materialConvolution );
				postprocessing.quad.position.z = - 500;
				postprocessing.scene.addObject( postprocessing.quad );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			var delta, time, oldTime;

			function render() {

				if ( ! oldTime ) oldTime = new Date().getTime();

				time = new Date().getTime();
				delta = 0.1 * ( time - oldTime );
				oldTime = time;
				
				parent.rotation.y += ( targetRotation - parent.rotation.y ) * 0.05;
				
				if ( postprocessing.enabled ) {

					renderer.clear();

					// Render scene into texture

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

					// Render quad with blured scene into texture (convolution pass 1)

					postprocessing.quad.materials[ 0 ] = 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[ 0 ] = postprocessing.materialScreen;

					postprocessing.materialScreen.uniforms.tDiffuse.texture = postprocessing.rtTexture3;

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

					// Render to screen

					postprocessing.materialFilm.uniforms.time.value += 0.01;
					postprocessing.quad.materials[ 0 ] = postprocessing.materialFilm;

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

				} else {

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

				}				

			}

		</script>

	</body>
</html>