examples/webgl_lines_dashed.html

<!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">
		<style>
			body {
				color: #ffffff;
				font-family:Monospace;
				font-size:13px;
				text-align:center;
				font-weight: bold;

				background-color: #000000;
				margin: 0px;
				overflow: hidden;
			}
			#info {
				color: #fff;
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
				z-index:100;
			}

		</style>
	</head>

	<body>
		<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - dashed lines example</div>
		<div id="container"></div>

		<script src="../build/three.js"></script>

		<script src="js/geometries/hilbert3D.js"></script>

		<script src="js/WebGL.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var renderer, scene, camera, stats;
			var objects = [];

			var 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 );

				var subdivisions = 6;
				var recursion = 1;

				var points = hilbert3D( new THREE.Vector3( 0, 0, 0 ), 25.0, recursion, 0, 1, 2, 3, 4, 5, 6, 7 );
				var spline = new THREE.CatmullRomCurve3( points );

				var samples = spline.getPoints( points.length * subdivisions );
				var geometrySpline = new THREE.BufferGeometry().setFromPoints( samples );

				var line = new THREE.Line( geometrySpline, new THREE.LineDashedMaterial( { color: 0xffffff, dashSize: 1, gapSize: 0.5 } ) );
				line.computeLineDistances();

				objects.push( line );
				scene.add( line );

				var geometryCube = cube( 50 );

				var lineSegments = new THREE.LineSegments( geometryCube, 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 );

				var container = document.getElementById( 'container' );
				container.appendChild( renderer.domElement );

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function cube( size ) {

				var h = size * 0.5;

				var geometry = new THREE.BufferGeometry();
				var position = [];

				position.push(
					- h, - h, - h,
					- h, h, - h,

					- h, h, - h,
					h, h, - h,

					h, h, - h,
					h, - h, - h,

					h, - h, - h,
					- h, - h, - h,

					- h, - h, h,
					- h, h, h,

					- h, h, h,
					h, h, h,

					h, h, h,
					h, - h, h,

					h, - h, h,
					- h, - h, h,

					- h, - h, - h,
					- h, - h, h,

					- h, h, - h,
					- h, h, h,

					h, h, - h,
					h, h, h,

					h, - h, - h,
					h, - h, h
				 );

				geometry.addAttribute( '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() {

				var 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>