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138 lines
3.9 KiB
138 lines
3.9 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - postprocessing - masking</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="container"></div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
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import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
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import { TexturePass } from 'three/addons/postprocessing/TexturePass.js';
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import { ClearPass } from 'three/addons/postprocessing/ClearPass.js';
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import { MaskPass, ClearMaskPass } from 'three/addons/postprocessing/MaskPass.js';
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import { CopyShader } from 'three/addons/shaders/CopyShader.js';
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let camera, composer, renderer;
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let box, torus;
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.z = 10;
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const scene1 = new THREE.Scene();
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const scene2 = new THREE.Scene();
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box = new THREE.Mesh( new THREE.BoxGeometry( 4, 4, 4 ) );
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scene1.add( box );
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torus = new THREE.Mesh( new THREE.TorusGeometry( 3, 1, 16, 32 ) );
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scene2.add( torus );
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renderer = new THREE.WebGLRenderer();
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renderer.setClearColor( 0xe0e0e0 );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.autoClear = false;
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document.body.appendChild( renderer.domElement );
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//
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const clearPass = new ClearPass();
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const clearMaskPass = new ClearMaskPass();
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const maskPass1 = new MaskPass( scene1, camera );
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const maskPass2 = new MaskPass( scene2, camera );
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const texture1 = new THREE.TextureLoader().load( 'textures/758px-Canestra_di_frutta_(Caravaggio).jpg' );
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texture1.minFilter = THREE.LinearFilter;
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const texture2 = new THREE.TextureLoader().load( 'textures/2294472375_24a3b8ef46_o.jpg' );
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const texturePass1 = new TexturePass( texture1 );
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const texturePass2 = new TexturePass( texture2 );
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const outputPass = new ShaderPass( CopyShader );
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const parameters = {
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stencilBuffer: true
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};
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const renderTarget = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, parameters );
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composer = new EffectComposer( renderer, renderTarget );
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composer.addPass( clearPass );
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composer.addPass( maskPass1 );
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composer.addPass( texturePass1 );
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composer.addPass( clearMaskPass );
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composer.addPass( maskPass2 );
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composer.addPass( texturePass2 );
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composer.addPass( clearMaskPass );
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composer.addPass( outputPass );
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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const width = window.innerWidth;
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const height = window.innerHeight;
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camera.aspect = width / height;
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camera.updateProjectionMatrix();
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renderer.setSize( width, height );
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composer.setSize( width, height );
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}
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function animate() {
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requestAnimationFrame( animate );
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const time = performance.now() * 0.001 + 6000;
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box.position.x = Math.cos( time / 1.5 ) * 2;
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box.position.y = Math.sin( time ) * 2;
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box.rotation.x = time;
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box.rotation.y = time / 2;
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torus.position.x = Math.cos( time ) * 2;
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torus.position.y = Math.sin( time / 1.5 ) * 2;
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torus.rotation.x = time;
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torus.rotation.y = time / 2;
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renderer.clear();
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composer.render( time );
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}
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</script>
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</body>
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</html>
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