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 - postprocessing - pixel shader</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				background-color: #000000;
				margin: 0px;
				overflow: hidden;
				font-family:Monospace;
				font-size:13px;
				/*text-align:center;*/
				font-weight: lighter;
			}

			a {
				color: gray;
				font-weight: bold;
			}

			#info {
				color: gray;
				position: absolute;
				bottom: 0px;
				width: 100%;
				padding: 15px;
			}

			.dg.ac {
				z-index: 1 !important;
			}
		</style>
	</head>
	<body>

		<script src="../build/three.js"></script>

		<script src="js/shaders/CopyShader.js"></script>
		<script src="js/shaders/PixelShader.js"></script>
		<script src="js/postprocessing/EffectComposer.js"></script>
		<script src="js/postprocessing/RenderPass.js"></script>
		<script src="js/postprocessing/ShaderPass.js"></script>
		<script src="js/controls/TrackballControls.js"></script>
		<script src='js/libs/dat.gui.min.js'></script>

		<div id="container"></div>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - pixel shader example<br/>
			shader by <a href="http://wongbryan.github.io">wongbryan</a>
		</div>

		<script>

			var camera, scene, renderer, gui, composer;
			var pixelPass, params;

			var group;

			init();
			animate();

			function updateGUI() {

				pixelPass.uniforms.pixelSize.value = params.pixelSize;

			}

			function resize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();
				renderer.setSize( window.innerWidth, window.innerHeight );

				pixelPass.uniforms.resolution.value.set( window.innerWidth, window.innerHeight ).multiplyScalar( window.devicePixelRatio );

			}

			function init() {

				var container = document.getElementById( 'container' );
				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setClearColor( 0xbfe7ff );
				container.appendChild( renderer.domElement );

				camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.set( 0, 0, 30 );
				controls = new THREE.TrackballControls( camera, renderer.domElement );
				controls.rotateSpeed = 2.0;
				controls.panSpeed = 0.8;
				controls.zoomSpeed = 1.5;

				scene = new THREE.Scene();

				var hemisphereLight = new THREE.HemisphereLight( 0xfceafc, 0x000000, .8 );
				scene.add( hemisphereLight );

				var dirLight = new THREE.DirectionalLight( 0xffffff, .5 );
				dirLight.position.set( 150, 75, 150 );
				scene.add( dirLight );

				var dirLight2 = new THREE.DirectionalLight( 0xffffff, .2 );
				dirLight2.position.set( - 150, 75, - 150 );
				scene.add( dirLight2 );

				var dirLight3 = new THREE.DirectionalLight( 0xffffff, .1 );
				dirLight3.position.set( 0, 125, 0 );
				scene.add( dirLight3 );

				var geometries = [
					new THREE.SphereGeometry( 1, 64, 64 ),
					new THREE.BoxGeometry( 1, 1, 1 ),
					new THREE.ConeGeometry( 1, 1, 32 ),
					new THREE.TetrahedronGeometry( 1 ),
					new THREE.TorusKnotGeometry( 1, .4 )
				];

				group = new THREE.Group();

				for ( var i = 0; i < 25; i ++ ) {

					var geom = geometries[ Math.floor( Math.random() * geometries.length ) ];
					var color = new THREE.Color();
					color.setHSL( Math.random(), .7 + .2 * Math.random(), .5 + .1 * Math.random() );
					var mat = new THREE.MeshPhongMaterial( { color: color, shininess: 200 } );
					var mesh = new THREE.Mesh( geom, mat );
					var s = 4 + Math.random() * 10;
					mesh.scale.set( s, s, s );

					mesh.position.set( Math.random() - 0.5, Math.random() - 0.5, Math.random() - 0.5 ).normalize();
					mesh.position.multiplyScalar( Math.random() * 200 );
					mesh.rotation.set( Math.random() * 2, Math.random() * 2, Math.random() * 2 );
					group.add( mesh );

				}

				scene.add( group );

				composer = new THREE.EffectComposer( renderer );
				composer.addPass( new THREE.RenderPass( scene, camera ) );

				pixelPass = new THREE.ShaderPass( THREE.PixelShader );
				pixelPass.uniforms.resolution.value = new THREE.Vector2( window.innerWidth, window.innerHeight );
				pixelPass.uniforms.resolution.value.multiplyScalar( window.devicePixelRatio );
				pixelPass.renderToScreen = true;
				composer.addPass( pixelPass );

				window.addEventListener( 'resize', resize );

				params = {
					pixelSize: 128,
					postprocessing: true
				};
				gui = new dat.GUI();
				gui.add( params, 'pixelSize' ).min( 2 ).max( 256 ).step( 2 );
				gui.add( params, 'postprocessing' );

			}

			function update() {

				controls.update();
				updateGUI();

				group.rotation.y += .0015;
				group.rotation.z += .001;

			}

			function animate() {

				update();

				if ( params.postprocessing ) {

					composer.render();

				} else {

					renderer.render( scene, camera );

				}

				window.requestAnimationFrame( animate );

			}

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