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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgpu - halftone</title>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Halftone
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.webgpu.js",
- "three/tsl": "../build/three.webgpu.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { color, mix, normalWorld, output, Fn, uniform, vec4, rotate, screenCoordinate, screenSize } from 'three/tsl';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
- let camera, scene, renderer, controls, clock, halftoneSettings;
- init();
- function init() {
- camera = new THREE.PerspectiveCamera( 25, window.innerWidth / window.innerHeight, 0.1, 100 );
- camera.position.set( 6, 3, 10 );
- scene = new THREE.Scene();
- clock = new THREE.Clock();
- const gui = new GUI();
- // lights
- const ambientLight = new THREE.AmbientLight( '#ffffff', 3 );
- scene.add( ambientLight );
- const directionalLight = new THREE.DirectionalLight( '#ffffff', 8 );
- directionalLight.position.set( 4, 3, 1 );
- scene.add( directionalLight );
- const lightsFolder = gui.addFolder( '💡 lights' );
- lightsFolder.add( ambientLight, 'intensity', 0, 10, 0.001 ).name( 'ambientIntensity' );
- lightsFolder.add( directionalLight, 'intensity', 0, 20, 0.001 ).name( 'directionalIntensity' );
- // halftone settings
- halftoneSettings = [
- // purple shade
- {
- count: 140,
- color: '#fb00ff',
- direction: new THREE.Vector3( - 0.4, - 1, 0.5 ),
- start: 1,
- end: 0,
- mixLow: 0,
- mixHigh: 0.5,
- radius: 0.8
- },
- // cyan highlight
- {
- count: 180,
- color: '#94ffd1',
- direction: new THREE.Vector3( 0.5, 0.5, - 0.2 ),
- start: 0.55,
- end: 0.2,
- mixLow: 0.5,
- mixHigh: 1,
- radius: 0.8
- }
- ];
- for ( const index in halftoneSettings ) {
- const settings = halftoneSettings[ index ];
- // uniforms
- const uniforms = {};
- uniforms.count = uniform( settings.count );
- uniforms.color = uniform( color( settings.color ) );
- uniforms.direction = uniform( settings.direction );
- uniforms.start = uniform( settings.start );
- uniforms.end = uniform( settings.end );
- uniforms.mixLow = uniform( settings.mixLow );
- uniforms.mixHigh = uniform( settings.mixHigh );
- uniforms.radius = uniform( settings.radius );
- settings.uniforms = uniforms;
- // debug
- const folder = gui.addFolder( `⚪️ halftone ${index}` );
- folder.addColor( { color: uniforms.color.value.getHexString( THREE.SRGBColorSpace ) }, 'color' )
- .onChange( value => uniforms.color.value.set( value ) );
- folder.add( uniforms.count, 'value', 1, 200, 1 ).name( 'count' );
- folder.add( uniforms.direction.value, 'x', - 1, 1, 0.01 ).listen();
- folder.add( uniforms.direction.value, 'y', - 1, 1, 0.01 ).listen();
- folder.add( uniforms.direction.value, 'z', - 1, 1, 0.01 ).listen();
- folder.add( uniforms.start, 'value', - 1, 1, 0.01 ).name( 'start' );
- folder.add( uniforms.end, 'value', - 1, 1, 0.01 ).name( 'end' );
- folder.add( uniforms.mixLow, 'value', 0, 1, 0.01 ).name( 'mixLow' );
- folder.add( uniforms.mixHigh, 'value', 0, 1, 0.01 ).name( 'mixHigh' );
- folder.add( uniforms.radius, 'value', 0, 1, 0.01 ).name( 'radius' );
- }
- // halftone functions
- const halftone = Fn( ( [ count, color, direction, start, end, radius, mixLow, mixHigh ] ) => {
- // grid pattern
- let gridUv = screenCoordinate.xy.div( screenSize.yy ).mul( count );
- gridUv = rotate( gridUv, Math.PI * 0.25 ).mod( 1 );
- // orientation strength
- const orientationStrength = normalWorld
- .dot( direction.normalize() )
- .remapClamp( end, start, 0, 1 );
- // mask
- const mask = gridUv
- .sub( 0.5 )
- .length()
- .step( orientationStrength.mul( radius ).mul( 0.5 ) )
- .mul( mix( mixLow, mixHigh, orientationStrength ) );
- return vec4( color, mask );
-
- } );
- const halftones = Fn( ( [ input ] ) => {
- const halftonesOutput = input;
- for ( const settings of halftoneSettings ) {
- const halfToneOutput = halftone( settings.uniforms.count, settings.uniforms.color, settings.uniforms.direction, settings.uniforms.start, settings.uniforms.end, settings.uniforms.radius, settings.uniforms.mixLow, settings.uniforms.mixHigh );
- halftonesOutput.rgb.assign( mix( halftonesOutput.rgb, halfToneOutput.rgb, halfToneOutput.a ) );
- }
- return halftonesOutput;
- } );
- // default material
- const defaultMaterial = new THREE.MeshStandardNodeMaterial( { color: '#ff622e' } );
- defaultMaterial.outputNode = halftones( output );
- const folder = gui.addFolder( '🎨 default material' );
- folder.addColor( { color: defaultMaterial.color.getHexString( THREE.SRGBColorSpace ) }, 'color' )
- .onChange( value => defaultMaterial.color.set( value ) );
- // objects
- const torusKnot = new THREE.Mesh(
- new THREE.TorusKnotGeometry( 0.6, 0.25, 128, 32 ),
- defaultMaterial
- );
- torusKnot.position.x = 3;
- scene.add( torusKnot );
- const sphere = new THREE.Mesh(
- new THREE.SphereGeometry( 1, 64, 64 ),
- defaultMaterial
- );
- sphere.position.x = - 3;
- scene.add( sphere );
- const gltfLoader = new GLTFLoader();
- gltfLoader.load(
- './models/gltf/Michelle.glb',
- ( gltf ) => {
- const model = gltf.scene;
- model.position.y = - 2;
- model.scale.setScalar( 2.5, 2.5, 2.5 );
- model.traverse( ( child ) => {
- if ( child.isMesh )
- child.material.outputNode = halftones( output );
- } );
- scene.add( model );
-
- }
- );
- // renderer
- renderer = new THREE.WebGPURenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- renderer.setClearColor( '#000000' );
- document.body.appendChild( renderer.domElement );
- controls = new OrbitControls( camera, renderer.domElement );
- controls.enableDamping = true;
- controls.minDistance = 0.1;
- controls.maxDistance = 50;
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- async function animate() {
-
- controls.update();
- const time = clock.getElapsedTime();
- halftoneSettings[ 1 ].uniforms.direction.value.x = Math.cos( time );
- halftoneSettings[ 1 ].uniforms.direction.value.y = Math.sin( time );
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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