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165 lines
4.0 KiB
HTML
165 lines
4.0 KiB
HTML
<html lang="en">
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<head>
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<title>three.js webgpu - custom lighting model</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="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - custom lighting model
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</div>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.webgpu.js",
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"three/webgpu": "../build/three.webgpu.js",
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"three/tsl": "../build/three.tsl.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 { color, lights } from 'three/tsl';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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class CustomLightingModel extends THREE.LightingModel {
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direct( { lightColor, reflectedLight }, stack ) {
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reflectedLight.directDiffuse.addAssign( lightColor );
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}
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}
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let camera, scene, renderer;
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let light1, light2, light3;
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init();
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function init() {
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camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 10 );
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camera.position.z = 1.5;
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scene = new THREE.Scene();
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// lights
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const sphereGeometry = new THREE.SphereGeometry( 0.02, 16, 8 );
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const addLight = ( hexColor ) => {
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const material = new THREE.NodeMaterial();
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material.colorNode = color( hexColor );
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material.lightsNode = lights(); // ignore scene lights
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const mesh = new THREE.Mesh( sphereGeometry, material );
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const light = new THREE.PointLight( hexColor, 0.1, 1 );
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light.add( mesh );
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scene.add( light );
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return light;
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};
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light1 = addLight( 0xffaa00 );
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light2 = addLight( 0x0040ff );
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light3 = addLight( 0x80ff80 );
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//light nodes ( selective lights )
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const allLightsNode = lights( [ light1, light2, light3 ] );
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// points
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const points = [];
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for ( let i = 0; i < 500_000; i ++ ) {
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const point = new THREE.Vector3().random().subScalar( 0.5 ).multiplyScalar( 3 );
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points.push( point );
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}
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const geometryPoints = new THREE.BufferGeometry().setFromPoints( points );
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const materialPoints = new THREE.PointsNodeMaterial();
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// custom lighting model
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const lightingModel = new CustomLightingModel();
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const lightingModelContext = allLightsNode.context( { lightingModel } );
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materialPoints.lightsNode = lightingModelContext;
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//
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const pointCloud = new THREE.Points( geometryPoints, materialPoints );
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scene.add( pointCloud );
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//
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renderer = new THREE.WebGPURenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.setAnimationLoop( animate );
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document.body.appendChild( renderer.domElement );
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// controls
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 0;
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controls.maxDistance = 4;
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// events
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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const time = Date.now() * 0.001;
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const scale = .5;
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light1.position.x = Math.sin( time * 0.7 ) * scale;
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light1.position.y = Math.cos( time * 0.5 ) * scale;
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light1.position.z = Math.cos( time * 0.3 ) * scale;
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light2.position.x = Math.cos( time * 0.3 ) * scale;
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light2.position.y = Math.sin( time * 0.5 ) * scale;
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light2.position.z = Math.sin( time * 0.7 ) * scale;
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light3.position.x = Math.sin( time * 0.7 ) * scale;
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light3.position.y = Math.cos( time * 0.3 ) * scale;
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light3.position.z = Math.sin( time * 0.5 ) * scale;
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scene.rotation.y = time * 0.1;
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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