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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - USDZ exporter</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">
- <style>
- body {
- background-color: #eee;
- }
- #info {
- color: #222;
- }
- a {
- color: #00f
- }
- #button {
- position: absolute;
- bottom: 15px;
- left: calc(50% - 40px);
- }
- </style>
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - USDZ exporter<br />
- Battle Damaged Sci-fi Helmet by
- <a href="https://sketchfab.com/theblueturtle_" target="_blank" rel="noopener">theblueturtle_</a>
- </div>
- <a id="link" rel="ar" href="" download="asset.usdz">
- <img id="button" width="100" src="files/arkit.png">
- </a>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
- import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
- import { USDZExporter } from 'three/addons/exporters/USDZExporter.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- let camera, scene, renderer;
- const params = {
- exportUSDZ: exportUSDZ
- };
- init();
- render();
- function init() {
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.toneMapping = THREE.ACESFilmicToneMapping;
- document.body.appendChild( renderer.domElement );
- camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
- camera.position.set( - 2.5, 0.6, 3.0 );
- const pmremGenerator = new THREE.PMREMGenerator( renderer );
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0xf0f0f0 );
- scene.environment = pmremGenerator.fromScene( new RoomEnvironment(), 0.04 ).texture;
- const loader = new GLTFLoader().setPath( 'models/gltf/DamagedHelmet/glTF/' );
- loader.load( 'DamagedHelmet.gltf', async function ( gltf ) {
- scene.add( gltf.scene );
- const shadowMesh = createSpotShadowMesh();
- shadowMesh.position.y = - 1.1;
- shadowMesh.position.z = - 0.25;
- shadowMesh.scale.setScalar( 2 );
- scene.add( shadowMesh );
- render();
- // USDZ
- const exporter = new USDZExporter();
- const arraybuffer = await exporter.parseAsync( gltf.scene );
- const blob = new Blob( [ arraybuffer ], { type: 'application/octet-stream' } );
- const link = document.getElementById( 'link' );
- link.href = URL.createObjectURL( blob );
- } );
- const controls = new OrbitControls( camera, renderer.domElement );
- controls.addEventListener( 'change', render ); // use if there is no animation loop
- controls.minDistance = 2;
- controls.maxDistance = 10;
- controls.target.set( 0, - 0.15, - 0.2 );
- controls.update();
- window.addEventListener( 'resize', onWindowResize );
- const isIOS = /iPad|iPhone|iPod/.test( navigator.userAgent );
- if ( isIOS === false ) {
- const gui = new GUI();
- gui.add( params, 'exportUSDZ' ).name( 'Export USDZ' );
- gui.open();
- }
- }
- function createSpotShadowMesh() {
- const canvas = document.createElement( 'canvas' );
- canvas.width = 128;
- canvas.height = 128;
- const context = canvas.getContext( '2d' );
- const gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
- gradient.addColorStop( 0.1, 'rgba(130,130,130,1)' );
- gradient.addColorStop( 1, 'rgba(255,255,255,1)' );
- context.fillStyle = gradient;
- context.fillRect( 0, 0, canvas.width, canvas.height );
- const shadowTexture = new THREE.CanvasTexture( canvas );
- const geometry = new THREE.PlaneGeometry();
- const material = new THREE.MeshBasicMaterial( {
- map: shadowTexture, blending: THREE.MultiplyBlending, toneMapped: false
- } );
- const mesh = new THREE.Mesh( geometry, material );
- mesh.rotation.x = - Math.PI / 2;
- return mesh;
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- render();
- }
- function exportUSDZ() {
- const link = document.getElementById( 'link' );
- link.click();
- }
- //
- function render() {
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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