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webgl_postprocessing_afterimage.html
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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>