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