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207 lines
5.2 KiB
207 lines
5.2 KiB
2 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 - exporter - ply</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">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - exporter - ply
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</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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { PLYExporter } from 'three/addons/exporters/PLYExporter.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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let scene, camera, renderer, exporter, mesh;
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const params = {
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exportASCII: exportASCII,
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exportBinaryBigEndian: exportBinaryBigEndian,
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exportBinaryLittleEndian: exportBinaryLittleEndian
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};
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 200, 100, 200 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xa0a0a0 );
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scene.fog = new THREE.Fog( 0xa0a0a0, 200, 1000 );
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exporter = new PLYExporter();
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//
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const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x444444 );
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hemiLight.position.set( 0, 200, 0 );
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scene.add( hemiLight );
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const directionalLight = new THREE.DirectionalLight( 0xffffff );
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directionalLight.position.set( 0, 200, 100 );
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directionalLight.castShadow = true;
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directionalLight.shadow.camera.top = 180;
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directionalLight.shadow.camera.bottom = - 100;
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directionalLight.shadow.camera.left = - 120;
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directionalLight.shadow.camera.right = 120;
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scene.add( directionalLight );
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// ground
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const ground = new THREE.Mesh( new THREE.PlaneGeometry( 2000, 2000 ), new THREE.MeshPhongMaterial( { color: 0x999999, depthWrite: false } ) );
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ground.rotation.x = - Math.PI / 2;
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ground.receiveShadow = true;
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scene.add( ground );
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const grid = new THREE.GridHelper( 2000, 20, 0x000000, 0x000000 );
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grid.material.opacity = 0.2;
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grid.material.transparent = true;
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scene.add( grid );
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// export mesh
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const geometry = new THREE.BoxGeometry( 50, 50, 50 );
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const material = new THREE.MeshPhongMaterial( { vertexColors: true } );
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// color vertices based on vertex positions
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const colors = geometry.getAttribute( 'position' ).array.slice();
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for ( let i = 0, l = colors.length; i < l; i ++ ) {
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if ( colors[ i ] > 0 ) colors[ i ] = 0.5;
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else colors[ i ] = 0;
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}
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geometry.setAttribute( 'color', new THREE.BufferAttribute( colors, 3, false ) );
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mesh = new THREE.Mesh( geometry, material );
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mesh.castShadow = true;
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mesh.position.y = 25;
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scene.add( mesh );
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//
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.outputEncoding = THREE.sRGBEncoding;
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.shadowMap.enabled = true;
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document.body.appendChild( renderer.domElement );
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//
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.target.set( 0, 25, 0 );
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controls.update();
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//
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window.addEventListener( 'resize', onWindowResize );
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const gui = new GUI();
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gui.add( params, 'exportASCII' ).name( 'Export PLY (ASCII)' );
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gui.add( params, 'exportBinaryBigEndian' ).name( 'Export PLY (Binary BE)' );
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gui.add( params, 'exportBinaryLittleEndian' ).name( 'Export PLY (Binary LE)' );
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gui.open();
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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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renderer.render( scene, camera );
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}
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function exportASCII() {
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exporter.parse( mesh, function ( result ) {
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saveString( result, 'box.ply' );
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} );
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}
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function exportBinaryBigEndian() {
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exporter.parse( mesh, function ( result ) {
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saveArrayBuffer( result, 'box.ply' );
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}, { binary: true } );
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}
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function exportBinaryLittleEndian() {
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exporter.parse( mesh, function ( result ) {
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saveArrayBuffer( result, 'box.ply' );
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}, { binary: true, littleEndian: true } );
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}
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const link = document.createElement( 'a' );
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link.style.display = 'none';
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document.body.appendChild( link );
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function save( blob, filename ) {
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link.href = URL.createObjectURL( blob );
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link.download = filename;
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link.click();
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}
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function saveString( text, filename ) {
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save( new Blob( [ text ], { type: 'text/plain' } ), filename );
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}
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function saveArrayBuffer( buffer, filename ) {
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save( new Blob( [ buffer ], { type: 'application/octet-stream' } ), filename );
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}
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</script>
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</body>
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</html>
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