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219 lines
5.5 KiB
219 lines
5.5 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 - loaders - PRWM loader</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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<style>
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.notes {
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position: fixed;
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text-align: left;
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bottom: 10px;
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font-family: "Arial", "Helvetica Neue", "Helvetica", sans-serif;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<strong>Models</strong>:
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<a class="model" href="models/prwm/faceted-nefertiti.*.prwm">Faceted Nefertiti</a>,
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<a class="model" href="models/prwm/smooth-suzanne.*.prwm">Smooth Suzanne</a>,
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<a class="model" href="models/prwm/vive-controller.*.prwm">Vive Controller</a>
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<div class="notes">
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The parsing of PRWM file is especially fast when the endianness of the file is the same as the endianness of the client platform.
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The loader will automatically replace the <strong>*</strong> in the model url by either <strong>le</strong> or <strong>be</strong> depending on the client platform's endianness to download the most appropriate file. <a href="https://github.com/kchapelier/PRWM" target="_blank" rel="noopener noreferrer">Specifications and implementations</a><br><br>
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This platform endianness is <strong id="endianness"></strong>.<br>
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See your console for stats.
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</div>
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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 { PRWMLoader } from 'three/addons/loaders/PRWMLoader.js';
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let camera, scene, renderer;
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let mouseX = 0, mouseY = 0;
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let windowHalfX = window.innerWidth / 2;
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let windowHalfY = window.innerHeight / 2;
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init();
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animate();
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function init() {
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document.getElementById( 'endianness' ).innerHTML = PRWMLoader.isBigEndianPlatform() ? 'big-endian' : 'little-endian';
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const container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
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camera.position.z = 250;
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// scene
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scene = new THREE.Scene();
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const ambient = new THREE.AmbientLight( 0x101030 );
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scene.add( ambient );
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const directionalLight = new THREE.DirectionalLight( 0xffeedd );
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directionalLight.position.set( 0, 0, 1 );
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scene.add( directionalLight );
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// model
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const loader = new PRWMLoader();
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const material = new THREE.MeshPhongMaterial( {} );
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let busy = false;
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let mesh = null;
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const onProgress = function ( xhr ) {
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if ( xhr.lengthComputable ) {
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const percentComplete = xhr.loaded / xhr.total * 100;
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console.log( Math.round( percentComplete, 2 ) + '% downloaded' );
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if ( xhr.loaded === xhr.total ) {
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console.log( 'File size: ' + ( xhr.total / 1024 ).toFixed( 2 ) + 'kB' );
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console.timeEnd( 'Download' );
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}
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}
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};
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const onError = function () {
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busy = false;
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};
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function loadGeometry( url ) {
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if ( busy ) return;
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busy = true;
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if ( mesh !== null ) {
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scene.remove( mesh );
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mesh.geometry.dispose();
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}
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console.log( '-- Loading', url );
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console.time( 'Download' );
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loader.load( url, function ( geometry ) {
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mesh = new THREE.Mesh( geometry, material );
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mesh.scale.set( 50, 50, 50 );
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scene.add( mesh );
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console.log( geometry.index ? 'indexed geometry' : 'non-indexed geometry' );
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console.log( '# of vertices: ' + geometry.attributes.position.count );
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console.log( '# of polygons: ' + ( geometry.index ? geometry.index.count / 3 : geometry.attributes.position.count / 3 ) );
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busy = false;
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}, onProgress, onError );
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}
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//
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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document.addEventListener( 'mousemove', onDocumentMouseMove );
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//
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document.querySelectorAll( 'a.model' ).forEach( function ( anchor ) {
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anchor.addEventListener( 'click', function ( e ) {
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e.preventDefault();
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loadGeometry( anchor.href );
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} );
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} );
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//
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// * is automatically replaced by 'le' or 'be' depending on the client platform's endianness
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loadGeometry( './models/prwm/smooth-suzanne.*.prwm' );
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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windowHalfX = window.innerWidth / 2;
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windowHalfY = window.innerHeight / 2;
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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 onDocumentMouseMove( event ) {
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mouseX = ( event.clientX - windowHalfX ) / 2;
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mouseY = ( event.clientY - windowHalfY ) / 2;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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function render() {
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camera.position.x += ( mouseX - camera.position.x ) * .05;
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camera.position.y += ( - mouseY - camera.position.y ) * .05;
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camera.lookAt( scene.position );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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