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webgl_postprocessing_backgrounds.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - postprocessing backgrounds</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: #000;
overflow: hidden;
font-family:Monospace;
font-size:13px;
margin: 0px;
text-align:center;
overflow: hidden;
}
a { color: #88f; }
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
display:block;
}
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Backgrounds: ClearPass, TexturePass and CubeTexturePass by <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a>
</div>
<div id="container"></div>
<script src="../build/three.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src="js/libs/dat.gui.min.js"></script>
<script src="js/shaders/CopyShader.js"></script>
<script src="js/postprocessing/EffectComposer.js"></script>
<script src="js/postprocessing/ClearPass.js"></script>
<script src="js/postprocessing/RenderPass.js"></script>
<script src="js/postprocessing/TexturePass.js"></script>
<script src="js/postprocessing/CubeTexturePass.js"></script>
<script src="js/postprocessing/ShaderPass.js"></script>
<script src="js/controls/OrbitControls.js"></script>
<script>
var scene, renderer, composer;
var clearPass, texturePass, renderPass;
var cameraP, cubeTexturePassP;
//var cameraO, cubeTexturePassO;
var gui, stats;
var params = {
clearPass: true,
clearColor: 'white',
clearAlpha: 1.0,
texturePass: true,
texturePassOpacity: 1.0,
cubeTexturePass: true,
cubeTexturePassOpacity: 1.0,
renderPass: true
//autoRotate: true,
//camera: 'perspective'
};
init();
animate();
clearGui();
function clearGui() {
if ( gui ) gui.destroy();
gui = new dat.GUI();
gui.add( params, "clearPass" );
gui.add( params, "clearColor", [ 'black', 'white', 'blue', 'green', 'red' ] );
gui.add( params, "clearAlpha", 0, 1 );
gui.add( params, "texturePass" );
gui.add( params, "texturePassOpacity", 0, 1 );
gui.add( params, "cubeTexturePass" );
gui.add( params, "cubeTexturePassOpacity", 0, 1 );
gui.add( params, "renderPass" );
//gui.add( params, "autoRotate" );
//gui.add( params, 'camera', [ 'perspective', 'orthographic' ] );
gui.open();
}
function init() {
var container = document.getElementById( "container" );
var width = window.innerWidth || 1;
var height = window.innerHeight || 1;
var aspect = width / height;
var devicePixelRatio = window.devicePixelRatio || 1;
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( devicePixelRatio );
renderer.setSize( width, height );
document.body.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
//
cameraP = new THREE.PerspectiveCamera( 65, aspect, 1, 10 );
cameraP.position.z = 7;
// cameraO = new THREE.OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 3, 10 );
// cameraO.position.z = 7;
// var fov = THREE.Math.degToRad( cameraP.fov );
// var hyperfocus = ( cameraP.near + cameraP.far ) / 2;
// var _height = 2 * Math.tan( fov / 2 ) * hyperfocus;
// cameraO.zoom = height / _height;
scene = new THREE.Scene();
var group = new THREE.Group();
scene.add( group );
var light = new THREE.PointLight( 0xddffdd, 1.0 );
light.position.z = 70;
light.position.y = - 70;
light.position.x = - 70;
scene.add( light );
var light2 = new THREE.PointLight( 0xffdddd, 1.0 );
light2.position.z = 70;
light2.position.x = - 70;
light2.position.y = 70;
scene.add( light2 );
var light3 = new THREE.PointLight( 0xddddff, 1.0 );
light3.position.z = 70;
light3.position.x = 70;
light3.position.y = - 70;
scene.add( light3 );
var geometry = new THREE.SphereBufferGeometry( 1, 48, 24 );
var material = new THREE.MeshStandardMaterial();
material.roughness = 0.5 * Math.random() + 0.25;
material.metalness = 0;
material.color.setHSL( Math.random(), 1.0, 0.3 );
var mesh = new THREE.Mesh( geometry, material );
group.add( mesh );
// postprocessing
var genCubeUrls = function ( prefix, postfix ) {
return [
prefix + 'px' + postfix, prefix + 'nx' + postfix,
prefix + 'py' + postfix, prefix + 'ny' + postfix,
prefix + 'pz' + postfix, prefix + 'nz' + postfix
];
};
composer = new THREE.EffectComposer( renderer );
clearPass = new THREE.ClearPass( params.clearColor, params.clearAlpha );
composer.addPass( clearPass );
texturePass = new THREE.TexturePass();
composer.addPass( texturePass );
var textureLoader = new THREE.TextureLoader();
textureLoader.load( "textures/hardwood2_diffuse.jpg", function ( map ) {
texturePass.map = map;
} );
cubeTexturePassP = new THREE.CubeTexturePass( cameraP );
composer.addPass( cubeTexturePassP );
var ldrUrls = genCubeUrls( "textures/cube/pisa/", ".png" );
new THREE.CubeTextureLoader().load( ldrUrls, function ( ldrCubeMap ) {
cubeTexturePassP.envMap = ldrCubeMap;
console.log( "loaded envmap" );
} );
renderPass = new THREE.RenderPass( scene, cameraP );
renderPass.clear = false;
composer.addPass( renderPass );
var copyPass = new THREE.ShaderPass( THREE.CopyShader );
composer.addPass( copyPass );
var controls = new THREE.OrbitControls( cameraP, renderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
var width = window.innerWidth;
var height = window.innerHeight;
var aspect = width / height;
cameraP.aspect = aspect;
cameraP.updateProjectionMatrix();
/*cameraO.left = - height * aspect;
cameraO.right = height * aspect;
cameraO.top = height;
cameraO.bottom = - height;
cameraO.updateProjectionMatrix();*/
renderer.setSize( width, height );
var pixelRatio = renderer.getPixelRatio();
var newWidth = Math.floor( width / pixelRatio ) || 1;
var newHeight = Math.floor( height / pixelRatio ) || 1;
composer.setSize( newWidth, newHeight );
}
function animate() {
requestAnimationFrame( animate );
stats.begin();
cameraP.updateMatrixWorld( true );
var newColor = clearPass.clearColor;
switch ( params.clearColor ) {
case 'blue': newColor = 0x0000ff; break;
case 'red': newColor = 0xff0000; break;
case 'green': newColor = 0x00ff00; break;
case 'white': newColor = 0xffffff; break;
case 'black': newColor = 0x000000; break;
}
clearPass.enabled = params.clearPass;
clearPass.clearColor = newColor;
clearPass.clearAlpha = params.clearAlpha;
texturePass.enabled = params.texturePass;
texturePass.opacity = params.texturePassOpacity;
cubeTexturePassP.enabled = params.cubeTexturePass;
cubeTexturePassP.opacity = params.cubeTexturePassOpacity;
renderPass.enabled = params.renderPass;
composer.render();
stats.end();
}
</script>
</body>
</html>