javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - postprocessing - afterimage</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 {
				margin: 0px;
				background-color: #000000;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

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

		<script src="js/shaders/CopyShader.js"></script>
		<script src="js/shaders/AfterimageShader.js"></script>

		<script src="js/postprocessing/EffectComposer.js"></script>
		<script src="js/postprocessing/RenderPass.js"></script>
		<script src="js/postprocessing/MaskPass.js"></script>
		<script src="js/postprocessing/ShaderPass.js"></script>
		<script src="js/postprocessing/AfterimagePass.js"></script>

		<script src="js/libs/dat.gui.min.js" type="text/javascript" charset="utf-8"></script>

		<script>

			var camera, scene, renderer, composer;
			var mesh;

			var afterimagePass;

			var params = {

				enable: true

			};

			init();
			createGUI();
			animate();

			function init() {

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.z = 400;

				scene = new THREE.Scene();
				scene.fog = new THREE.Fog( 0x000000, 1, 1000 );

				var geometry = new THREE.BoxBufferGeometry( 150, 150, 150, 2, 2, 2 );
				var material = new THREE.MeshNormalMaterial();
				mesh = new THREE.Mesh( geometry, material );
				scene.add( mesh );

				// postprocessing

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

				afterimagePass = new THREE.AfterimagePass();
				composer.addPass( afterimagePass );

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function createGUI() {

				var gui = new dat.GUI( { name: 'Damp setting' } );
				gui.add( afterimagePass.uniforms[ "damp" ], 'value', 0, 1 ).step( 0.001 );
				gui.add( params, 'enable' );

			}

			function onWindowResize() {

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

				renderer.setSize( window.innerWidth, window.innerHeight );
				composer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				requestAnimationFrame( animate );

				mesh.rotation.x += 0.005;
				mesh.rotation.y += 0.01;

				if ( params.enable ) {

					composer.render();

				} else {

					renderer.render( scene, camera );

				}

			}

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