<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - loaders - PRWM loader</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>
.notes {
position: fixed;
text-align: left;
bottom: 10px;
font-family: "Arial", "Helvetica Neue", "Helvetica", sans-serif;
}
</style>
</head>
<body>
<div id="info">
<strong>Models</strong>:
<a class="model" href="models/prwm/faceted-nefertiti.*.prwm">Faceted Nefertiti</a>,
<a class="model" href="models/prwm/smooth-suzanne.*.prwm">Smooth Suzanne</a>,
<a class="model" href="models/prwm/vive-controller.*.prwm">Vive Controller</a>
<div class="notes">
The parsing of PRWM file is especially fast when the endianness of the file is the same as the endianness of the client platform.
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>
This platform endianness is <strong id="endianness"></strong>.<br>
See your console for stats.
</div>
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { PRWMLoader } from 'three/addons/loaders/PRWMLoader.js';
let camera, scene, renderer;
let mouseX = 0, mouseY = 0;
let windowHalfX = window.innerWidth / 2;
let windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
document.getElementById( 'endianness' ).innerHTML = PRWMLoader.isBigEndianPlatform() ? 'big-endian' : 'little-endian';
const container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.z = 250;
// scene
scene = new THREE.Scene();
const ambient = new THREE.AmbientLight( 0x101030 );
scene.add( ambient );
const directionalLight = new THREE.DirectionalLight( 0xffeedd );
directionalLight.position.set( 0, 0, 1 );
scene.add( directionalLight );
// model
const loader = new PRWMLoader();
const material = new THREE.MeshPhongMaterial( {} );
let busy = false;
let mesh = null;
const onProgress = function ( xhr ) {
if ( xhr.lengthComputable ) {
const percentComplete = xhr.loaded / xhr.total * 100;
console.log( Math.round( percentComplete, 2 ) + '% downloaded' );
if ( xhr.loaded === xhr.total ) {
console.log( 'File size: ' + ( xhr.total / 1024 ).toFixed( 2 ) + 'kB' );
console.timeEnd( 'Download' );
}
}
};
const onError = function () {
busy = false;
};
function loadGeometry( url ) {
if ( busy ) return;
busy = true;
if ( mesh !== null ) {
scene.remove( mesh );
mesh.geometry.dispose();
}
console.log( '-- Loading', url );
console.time( 'Download' );
loader.load( url, function ( geometry ) {
mesh = new THREE.Mesh( geometry, material );
mesh.scale.set( 50, 50, 50 );
scene.add( mesh );
console.log( geometry.index ? 'indexed geometry' : 'non-indexed geometry' );
console.log( '# of vertices: ' + geometry.attributes.position.count );
console.log( '# of polygons: ' + ( geometry.index ? geometry.index.count / 3 : geometry.attributes.position.count / 3 ) );
busy = false;
}, onProgress, onError );
}
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove );
//
document.querySelectorAll( 'a.model' ).forEach( function ( anchor ) {
anchor.addEventListener( 'click', function ( e ) {
e.preventDefault();
loadGeometry( anchor.href );
} );
} );
//
// * is automatically replaced by 'le' or 'be' depending on the client platform's endianness
loadGeometry( './models/prwm/smooth-suzanne.*.prwm' );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX ) / 2;
mouseY = ( event.clientY - windowHalfY ) / 2;
}
//
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
</script>
</body>
</html>