javascript
/
three.js
-ын хуулбар https://github.com/tazdij/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - exporter - ply</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> webgl - exporter - ply<br/><br/>
			<button id="exportASCII">export ASCII</button> <button id="exportBinaryBigEndian">export binary (Big Endian)</button> <button id="exportBinaryLittleEndian">export binary (Little Endian)</button>
		</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"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { PLYExporter } from './jsm/exporters/PLYExporter.js';

			let scene, camera, renderer, exporter, mesh;

			init();
			animate();

			function init() {

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 200, 100, 200 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0xa0a0a0 );
				scene.fog = new THREE.Fog( 0xa0a0a0, 200, 1000 );

				exporter = new PLYExporter();

				//

				const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x444444 );
				hemiLight.position.set( 0, 200, 0 );
				scene.add( hemiLight );

				const directionalLight = new THREE.DirectionalLight( 0xffffff );
				directionalLight.position.set( 0, 200, 100 );
				directionalLight.castShadow = true;
				directionalLight.shadow.camera.top = 180;
				directionalLight.shadow.camera.bottom = - 100;
				directionalLight.shadow.camera.left = - 120;
				directionalLight.shadow.camera.right = 120;
				scene.add( directionalLight );

				// ground

				const ground = new THREE.Mesh( new THREE.PlaneGeometry( 2000, 2000 ), new THREE.MeshPhongMaterial( { color: 0x999999, depthWrite: false } ) );
				ground.rotation.x = - Math.PI / 2;
				ground.receiveShadow = true;
				scene.add( ground );

				const grid = new THREE.GridHelper( 2000, 20, 0x000000, 0x000000 );
				grid.material.opacity = 0.2;
				grid.material.transparent = true;
				scene.add( grid );

				// export mesh

				const geometry = new THREE.BoxGeometry( 50, 50, 50 );
				const material = new THREE.MeshPhongMaterial( { vertexColors: true } );

				// color vertices based on vertex positions
				const colors = geometry.getAttribute( 'position' ).array.slice();
				for ( let i = 0, l = colors.length; i < l; i ++ ) {

					if ( colors[ i ] > 0 ) colors[ i ] = 0.5;
					else colors[ i ] = 0;

				}
				geometry.setAttribute( 'color', new THREE.BufferAttribute( colors, 3, false ) );

				mesh = new THREE.Mesh( geometry, material );
				mesh.castShadow = true;
				mesh.position.y = 25;
				scene.add( mesh );

				//

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.outputEncoding = THREE.sRGBEncoding;
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.shadowMap.enabled = true;
				document.body.appendChild( renderer.domElement );

				//

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.target.set( 0, 25, 0 );
				controls.update();

				//

				window.addEventListener( 'resize', onWindowResize );

				const buttonExportASCII = document.getElementById( 'exportASCII' );
				buttonExportASCII.addEventListener( 'click', exportASCII );

				const buttonExportBinaryBE = document.getElementById( 'exportBinaryBigEndian' );
				buttonExportBinaryBE.addEventListener( 'click', exportBinaryBigEndian );

				const buttonExportBinaryLE = document.getElementById( 'exportBinaryLittleEndian' );
				buttonExportBinaryLE.addEventListener( 'click', exportBinaryLittleEndian );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				requestAnimationFrame( animate );
				renderer.render( scene, camera );

			}

			function exportASCII() {

				exporter.parse( mesh, function ( result ) {

					saveString( result, 'box.ply' );

				} );

			}

			function exportBinaryBigEndian() {

				exporter.parse( mesh, function ( result ) {

					saveArrayBuffer( result, 'box.ply' );

				}, { binary: true } );

			}

			function exportBinaryLittleEndian() {

				exporter.parse( mesh, function ( result ) {

					saveArrayBuffer( result, 'box.ply' );

				}, { binary: true, littleEndian: true } );

			}

			const link = document.createElement( 'a' );
			link.style.display = 'none';
			document.body.appendChild( link );

			function save( blob, filename ) {

				link.href = URL.createObjectURL( blob );
				link.download = filename;
				link.click();

			}

			function saveString( text, filename ) {

				save( new Blob( [ text ], { type: 'text/plain' } ), filename );

			}

			function saveArrayBuffer( buffer, filename ) {

				save( new Blob( [ buffer ], { type: 'application/octet-stream' } ), filename );

			}

		</script>

	</body>
</html>