examples/webgl_loader_prwm.html

<!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">
		<style>
			html, body {
				padding:0;
				margin:0;
				background:#000000;
			}

			.models {
				position:absolute;
				top:10px;
				left:12px;
				z-index:2;
				font-family: "Arial", "Helvetica Neue", "Helvetica", sans-serif;
				font-size:13px;
			}

			.notes {
				position:absolute;
				left:12px;
				bottom:10px;
				z-index:2;
				font-family: "Arial", "Helvetica Neue", "Helvetica", sans-serif;
				font-size:13px;
				text-align:left;
				color:#FFFFFF;
				max-width:300px;
			}

			.notes a, .notes a:visited {
				color:#FFFFFF;
			}

			.models strong {
				color:#FFFFFF;
				text-transform: uppercase;
			}

			.models a, .models a:visited {
				color:#FFFFFF;
				margin-left:12px;
				text-decoration: none;
			}

			.models a:hover, .models a:focus {
				text-decoration: underline;
			}
		</style>
	</head>

	<body>


		<div class="models">
			<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>
		<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.<br><br>
			This platform endianness is <strong id="endianness"></strong>.<br><br>
			See your console for stats.<br><br>
			<a href="https://github.com/kchapelier/PRWM" target="_blank" rel="noopener noreferrer">Specifications and implementations</a>
		</div>

		<script src="../build/three.js"></script>
		<script src="js/loaders/PRWMLoader.js"></script>

		<script>

			var container;

			var camera, scene, renderer;

			var mouseX = 0, mouseY = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;


			init();
			animate();


			function init() {

				document.getElementById( 'endianness' ).innerHTML = THREE.PRWMLoader.isBigEndianPlatform() ? 'big-endian' : 'little-endian';
				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();

				var ambient = new THREE.AmbientLight( 0x101030 );
				scene.add( ambient );

				var directionalLight = new THREE.DirectionalLight( 0xffeedd );
				directionalLight.position.set( 0, 0, 1 );
				scene.add( directionalLight );

				// model

				var loader = new THREE.PRWMLoader();
				var material = new THREE.MeshPhongMaterial( {} );
				var busy = false;
				var mesh = null;

				var onProgress = function ( xhr ) {

					if ( xhr.lengthComputable ) {

						var 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' );

						}

					}

				};

				var 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( 1 );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );

				//

				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, false );

			}

			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>