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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgpu - fat lines</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="container"></div>
- <div id="info"><a href="https://threejs.org" target="_blank">three.js</a> - fat lines</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 } from 'three/tsl';
- import Stats from 'three/addons/libs/stats.module.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { Line2 } from 'three/addons/lines/webgpu/Line2.js';
- import { LineGeometry } from 'three/addons/lines/LineGeometry.js';
- import * as GeometryUtils from 'three/addons/utils/GeometryUtils.js';
- let line, renderer, scene, camera, camera2, controls, backgroundNode;
- let line1;
- let matLine, matLineBasic, matLineDashed;
- let stats;
- let gui;
- // viewport
- let insetWidth;
- let insetHeight;
- init();
- function init() {
- renderer = new THREE.WebGPURenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setClearColor( 0x000000, 0.0 );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- document.body.appendChild( renderer.domElement );
- scene = new THREE.Scene();
- camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
- camera.position.set( - 40, 0, 60 );
- camera2 = new THREE.PerspectiveCamera( 40, 1, 1, 1000 );
- camera2.position.copy( camera.position );
- controls = new OrbitControls( camera, renderer.domElement );
- controls.enableDamping = true;
- controls.minDistance = 10;
- controls.maxDistance = 500;
- backgroundNode = color( 0x222222 );
- // Position and THREE.Color Data
- const positions = [];
- const colors = [];
- const points = GeometryUtils.hilbert3D( new THREE.Vector3( 0, 0, 0 ), 20.0, 1, 0, 1, 2, 3, 4, 5, 6, 7 );
- const spline = new THREE.CatmullRomCurve3( points );
- const divisions = Math.round( 12 * points.length );
- const point = new THREE.Vector3();
- const lineColor = new THREE.Color();
- for ( let i = 0, l = divisions; i < l; i ++ ) {
- const t = i / l;
- spline.getPoint( t, point );
- positions.push( point.x, point.y, point.z );
- lineColor.setHSL( t, 1.0, 0.5, THREE.SRGBColorSpace );
- colors.push( lineColor.r, lineColor.g, lineColor.b );
- }
- // Line2 ( LineGeometry, LineMaterial )
- const geometry = new LineGeometry();
- geometry.setPositions( positions );
- geometry.setColors( colors );
- geometry.instanceCount = positions.length / 3 - 1;
- matLine = new THREE.Line2NodeMaterial( {
- color: 0xffffff,
- linewidth: 5, // in world units with size attenuation, pixels otherwise
- vertexColors: true,
- dashed: false,
- alphaToCoverage: true,
- } );
- line = new Line2( geometry, matLine );
- line.computeLineDistances();
- line.scale.set( 1, 1, 1 );
- scene.add( line );
- const geo = new THREE.BufferGeometry();
- geo.setAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
- geo.setAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );
- matLineBasic = new THREE.LineBasicNodeMaterial( { vertexColors: true } );
- matLineDashed = new THREE.LineDashedNodeMaterial( { vertexColors: true, scale: 2, dashSize: 1, gapSize: 1 } );
- line1 = new THREE.Line( geo, matLineBasic );
- line1.computeLineDistances();
- line1.visible = false;
- scene.add( line1 );
- //
- window.addEventListener( 'resize', onWindowResize );
- onWindowResize();
- stats = new Stats();
- document.body.appendChild( stats.dom );
- initGui();
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- insetWidth = window.innerHeight / 4; // square
- insetHeight = window.innerHeight / 4;
- camera2.aspect = insetWidth / insetHeight;
- camera2.updateProjectionMatrix();
- }
- function animate() {
- stats.update();
- // main scene
- renderer.setClearColor( 0x000000, 0 );
- renderer.setViewport( 0, 0, window.innerWidth, window.innerHeight );
- controls.update();
- renderer.autoClear = true;
- scene.backgroundNode = null;
- renderer.render( scene, camera );
- // inset scene
- const posY = window.innerHeight - insetHeight - 20;
- renderer.clearDepth(); // important!
- renderer.setScissorTest( true );
- renderer.setScissor( 20, posY, insetWidth, insetHeight );
- renderer.setViewport( 20, posY, insetWidth, insetHeight );
- camera2.position.copy( camera.position );
- camera2.quaternion.copy( camera.quaternion );
- renderer.autoClear = false;
- scene.backgroundNode = backgroundNode;
- renderer.render( scene, camera2 );
- renderer.setScissorTest( false );
- }
- //
- function initGui() {
- gui = new GUI();
- const param = {
- 'line type': 0,
- 'world units': false,
- 'width': 5,
- 'alphaToCoverage': true,
- 'dashed': false,
- 'dash offset': 0,
- 'dash scale': 1,
- 'dash / gap': 1
- };
- gui.add( param, 'line type', { 'LineGeometry': 0, '"line-strip"': 1 } ).onChange( function ( val ) {
- switch ( val ) {
- case 0:
- line.visible = true;
- line1.visible = false;
- break;
- case 1:
- line.visible = false;
- line1.visible = true;
- break;
- }
- } );
- gui.add( param, 'world units' ).onChange( function ( val ) {
- matLine.worldUnits = val;
- matLine.needsUpdate = true;
- } );
- gui.add( param, 'width', 1, 10 ).onChange( function ( val ) {
- matLine.linewidth = val;
- } );
- gui.add( param, 'alphaToCoverage' ).onChange( function ( val ) {
- matLine.alphaToCoverage = val;
- } );
- gui.add( param, 'dashed' ).onChange( function ( val ) {
- matLine.dashed = val;
- line1.material = val ? matLineDashed : matLineBasic;
- } );
- gui.add( param, 'dash scale', 0.5, 2, 0.1 ).onChange( function ( val ) {
- matLine.scale = val;
- matLineDashed.scale = val;
- } );
- gui.add( param, 'dash offset', 0, 5, 0.1 ).onChange( function ( val ) {
- matLine.dashOffset = val;
- matLineDashed.dashOffset = val;
- } );
- gui.add( param, 'dash / gap', { '2 : 1': 0, '1 : 1': 1, '1 : 2': 2 } ).onChange( function ( val ) {
- switch ( val ) {
- case 0:
- matLine.dashSize = 2;
- matLine.gapSize = 1;
- matLineDashed.dashSize = 2;
- matLineDashed.gapSize = 1;
- break;
- case 1:
- matLine.dashSize = 1;
- matLine.gapSize = 1;
- matLineDashed.dashSize = 1;
- matLineDashed.gapSize = 1;
- break;
- case 2:
- matLine.dashSize = 1;
- matLine.gapSize = 2;
- matLineDashed.dashSize = 1;
- matLineDashed.gapSize = 2;
- break;
- }
- } );
- }
- </script>
- </body>
- </html>
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