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webgl_lines_dashed.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - dashed 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="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - dashed lines example</div>
<div id="container"></div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import Stats from 'three/addons/libs/stats.module.js';
import * as GeometryUtils from 'three/addons/utils/GeometryUtils.js';
let renderer, scene, camera, stats;
const objects = [];
const WIDTH = window.innerWidth, HEIGHT = window.innerHeight;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 60, WIDTH / HEIGHT, 1, 200 );
camera.position.z = 150;
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x111111 );
scene.fog = new THREE.Fog( 0x111111, 150, 200 );
const subdivisions = 6;
const recursion = 1;
const points = GeometryUtils.hilbert3D( new THREE.Vector3( 0, 0, 0 ), 25.0, recursion, 0, 1, 2, 3, 4, 5, 6, 7 );
const spline = new THREE.CatmullRomCurve3( points );
const samples = spline.getPoints( points.length * subdivisions );
const geometrySpline = new THREE.BufferGeometry().setFromPoints( samples );
const line = new THREE.Line( geometrySpline, new THREE.LineDashedMaterial( { color: 0xffffff, dashSize: 1, gapSize: 0.5 } ) );
line.computeLineDistances();
objects.push( line );
scene.add( line );
const geometryBox = box( 50, 50, 50 );
const lineSegments = new THREE.LineSegments( geometryBox, new THREE.LineDashedMaterial( { color: 0xffaa00, dashSize: 3, gapSize: 1 } ) );
lineSegments.computeLineDistances();
objects.push( lineSegments );
scene.add( lineSegments );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( WIDTH, HEIGHT );
const container = document.getElementById( 'container' );
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
//
window.addEventListener( 'resize', onWindowResize );
}
function box( width, height, depth ) {
width = width * 0.5,
height = height * 0.5,
depth = depth * 0.5;
const geometry = new THREE.BufferGeometry();
const position = [];
position.push(
- width, - height, - depth,
- width, height, - depth,
- width, height, - depth,
width, height, - depth,
width, height, - depth,
width, - height, - depth,
width, - height, - depth,
- width, - height, - depth,
- width, - height, depth,
- width, height, depth,
- width, height, depth,
width, height, depth,
width, height, depth,
width, - height, depth,
width, - height, depth,
- width, - height, depth,
- width, - height, - depth,
- width, - height, depth,
- width, height, - depth,
- width, height, depth,
width, height, - depth,
width, height, depth,
width, - height, - depth,
width, - height, depth
);
geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( position, 3 ) );
return geometry;
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
const time = Date.now() * 0.001;
scene.traverse( function ( object ) {
if ( object.isLine ) {
object.rotation.x = 0.25 * time;
object.rotation.y = 0.25 * time;
}
} );
renderer.render( scene, camera );
}
</script>
</body>
</html>