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186 lines
4.3 KiB
186 lines
4.3 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 - dashed lines</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"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - dashed lines example</div>
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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 Stats from 'three/addons/libs/stats.module.js';
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import * as GeometryUtils from 'three/addons/utils/GeometryUtils.js';
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let renderer, scene, camera, stats;
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const objects = [];
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const WIDTH = window.innerWidth, HEIGHT = window.innerHeight;
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 60, WIDTH / HEIGHT, 1, 200 );
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camera.position.z = 150;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0x111111 );
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scene.fog = new THREE.Fog( 0x111111, 150, 200 );
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const subdivisions = 6;
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const recursion = 1;
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const points = GeometryUtils.hilbert3D( new THREE.Vector3( 0, 0, 0 ), 25.0, recursion, 0, 1, 2, 3, 4, 5, 6, 7 );
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const spline = new THREE.CatmullRomCurve3( points );
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const samples = spline.getPoints( points.length * subdivisions );
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const geometrySpline = new THREE.BufferGeometry().setFromPoints( samples );
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const line = new THREE.Line( geometrySpline, new THREE.LineDashedMaterial( { color: 0xffffff, dashSize: 1, gapSize: 0.5 } ) );
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line.computeLineDistances();
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objects.push( line );
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scene.add( line );
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const geometryBox = box( 50, 50, 50 );
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const lineSegments = new THREE.LineSegments( geometryBox, new THREE.LineDashedMaterial( { color: 0xffaa00, dashSize: 3, gapSize: 1 } ) );
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lineSegments.computeLineDistances();
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objects.push( lineSegments );
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scene.add( lineSegments );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( WIDTH, HEIGHT );
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const container = document.getElementById( 'container' );
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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function box( width, height, depth ) {
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width = width * 0.5,
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height = height * 0.5,
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depth = depth * 0.5;
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const geometry = new THREE.BufferGeometry();
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const position = [];
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position.push(
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- width, - height, - depth,
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- width, height, - depth,
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- width, height, - depth,
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width, height, - depth,
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width, height, - depth,
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width, - height, - depth,
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width, - height, - depth,
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- width, - height, - depth,
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- width, - height, depth,
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- width, height, depth,
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- width, height, depth,
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width, height, depth,
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width, height, depth,
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width, - height, depth,
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width, - height, depth,
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- width, - height, depth,
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- width, - height, - depth,
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- width, - height, depth,
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- width, height, - depth,
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- width, height, depth,
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width, height, - depth,
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width, height, depth,
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width, - height, - depth,
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width, - height, depth
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);
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geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( position, 3 ) );
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return geometry;
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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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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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const time = Date.now() * 0.001;
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scene.traverse( function ( object ) {
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if ( object.isLine ) {
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object.rotation.x = 0.25 * time;
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object.rotation.y = 0.25 * time;
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}
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} );
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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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