Add a THREE loader for PLY ASCII files.

examples/js/loaders/PLYLoader.js

@@ -0,0 +1,172 @@
+/**
+ * @author Wei Meng / http://about.me/menway
+ *
+ * Description: A THREE loader for PLY ASCII files (known as the Polygon File Format or the Stanford Triangle Format).
+ *
+ * Currently only supports ASCII encoded files.
+ *
+ * Limitations: ASCII decoding assumes file is UTF-8.
+ *
+ * Usage:
+ * 	var loader = new THREE.PLYLoader();
+ * 	loader.addEventListener( 'load', function ( event ) {
+ *
+ * 		var geometry = event.content;
+ * 		scene.add( new THREE.Mesh( geometry ) );
+ *
+ * 	} );
+ * 	loader.load( './models/ply/ascii/dolphins.ply' );
+ */
+
+
+THREE.PLYLoader = function () {
+
+	THREE.EventDispatcher.call( this );
+
+};
+
+THREE.PLYLoader.prototype = {
+
+	constructor: THREE.PLYLoader,
+
+	load: function ( url, callback ) {
+
+		var scope = this;
+		var request = new XMLHttpRequest();
+
+		request.addEventListener( 'load', function ( event ) {
+
+            var geometry;
+            geometry = scope.parse( event.target.response );
+
+			scope.dispatchEvent( { type: 'load', content: geometry } );
+
+			if ( callback ) callback( geometry );
+
+		}, false );
+
+		request.addEventListener( 'progress', function ( event ) {
+
+			scope.dispatchEvent( { type: 'progress', loaded: event.loaded, total: event.total } );
+
+		}, false );
+
+		request.addEventListener( 'error', function () {
+
+			scope.dispatchEvent( { type: 'error', message: 'Couldn\'t load URL [' + url + ']' } );
+
+		}, false );
+
+		request.open( 'GET', url, true );
+		request.responseType = "arraybuffer";
+		request.send( null );
+
+	},
+
+	bin2str: function (buf) {
+
+		var array_buffer = new Uint8Array(buf);
+		var str = '';
+		for(var i = 0; i < buf.byteLength; i++) {
+			str += String.fromCharCode(array_buffer[i]); // implicitly assumes little-endian
+		}
+		
+		return str;
+
+	},
+
+	isASCII: function(buf){
+
+		// currently only supports ASCII encoded files.
+		return true;
+		
+    },
+
+	parse: function (buf) {
+
+		if( this.isASCII(buf) )	{
+			var str = this.bin2str(buf);
+			return this.parseASCII(str);
+		} else {
+			return this.parseBinary(buf);
+		}
+
+    },
+
+	parseASCII: function ( data ) {
+
+		// PLY ascii format specification, as per http://en.wikipedia.org/wiki/PLY_(file_format)	
+
+		var geometry = new THREE.Geometry();
+
+		var result;
+
+		var patternHeader = /ply([\s\S]*)end_header/;
+		var header = "";
+		if ( ( result = patternHeader.exec( data ) ) != null ) {
+			header = result [ 1 ];
+		}
+		
+		var patternBody = /end_header([\s\S]*)$/;
+		var body = "";
+		if ( ( result = patternBody.exec( data ) ) != null ) {
+			body = result [ 1 ];
+		}
+		
+		var patternVertexCount = /element[\s]+vertex[\s]+(\d+)/g;
+		var vertexCount = 0;
+		if ( ( result = patternVertexCount.exec( header ) ) != null ) {
+			vertexCount = parseInt( result[ 1 ] );
+		}
+
+		var patternFaceCount = /element[\s]+face[\s]+(\d+)/g;
+		var faceCount = 0;
+		if ( ( result = patternFaceCount.exec( header ) ) != null ) {
+			faceCount = parseInt( result[ 1 ] );
+		}
+		
+		if ( vertexCount != 0 && faceCount != 0 ) {
+			// Vertex			
+			// assume x y z
+			var patternVertex = /([-+]?[0-9]+\.?[0-9]*([eE][-+]?[0-9]+)?)+[\s]+([-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?)+[\s]+([-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?)+/g;
+			for ( var i = 0; i < vertexCount; i++) {
+				if ( ( result = patternVertex.exec( body ) ) != null ) {
+					geometry.vertices.push( new THREE.Vector3( parseFloat( result[ 1 ] ), parseFloat( result[ 3 ] ), parseFloat( result[ 5 ] ) ) );
+				} else {
+					console.error('Vertex error: vertex count mismatch.');
+					return geometry;
+				}
+			}
+			
+			// Face
+			// assume 3 index0 index1 index2
+			var patternFace = /3[\s]+([-+]?[0-9]+)[\s]+([-+]?[0-9]+)[\s]+([-+]?[0-9]+)/g;
+			for (var i = 0; i < faceCount; i++) {
+				if ( ( result = patternFace.exec( body ) ) != null ) {
+					geometry.faces.push( new THREE.Face3( parseInt( result[ 1 ] ), parseInt( result[ 2 ] ), parseInt( result[ 3 ] ) ) );
+				} else {
+					console.error('Face error: vertex count mismatch.');
+					return geometry;
+				}
+			}
+			
+		} else {
+			console.error( 'Header error: vertexCount(' + vertexCount + '), faceCount(' + faceCount + ').' );
+		}
+
+		geometry.computeCentroids();
+		geometry.computeBoundingSphere();
+
+		return geometry;
+
+	},
+
+	parseBinary: function (buf) {
+
+		// not supported yet
+		console.error('Not supported yet.');
+		
+	}
+
+
+};

examples/models/ply/ascii/dolphins.ply

@@ -0,0 +1,2553 @@
+ply
+format ascii 1.0
+element vertex 855
+property float32 x
+property float32 y
+property float32 z
+element face 1689
+property list uint8 int32 vertex_indices
+end_header
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examples/webgl_loader_ply.html

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+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>three.js webgl - PLY</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<style>
+			body {
+				font-family: Monospace;
+				background-color: #000000;
+				margin: 0px;
+				overflow: hidden;
+			}
+
+			#info {
+				color: #fff;
+				position: absolute;
+				top: 10px;
+				width: 100%;
+				text-align: center;
+				z-index: 100;
+				display:block;
+
+			}
+
+			a { color: skyblue }
+			.button { background:#999; color:#eee; padding:0.2em 0.5em; cursor:pointer }
+			.highlight { background:orange; color:#fff; }
+
+			span {
+				display: inline-block;
+				width: 60px;
+				float: left;
+				text-align: center;
+			}
+
+		</style>
+	</head>
+	<body>
+		<div id="info">
+			<a href="http://threejs.org" target="_blank">three.js</a> -
+			PLY loader test by <a href="https://github.com/menway">Wei Meng</a>. Image from <a href="http://people.sc.fsu.edu/~jburkardt/data/ply/ply.html">John Burkardt</a>
+		</div>
+
+		<script src="../build/three.min.js"></script>
+
+		<script src="js/loaders/PLYLoader.js"></script>
+
+		<script src="js/Detector.js"></script>
+		<script src="js/libs/stats.min.js"></script>
+
+		<script>
+
+			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
+
+			var container, stats;
+
+			var camera, cameraTarget, scene, renderer;
+
+			init();
+			animate();
+
+			function init() {
+
+				container = document.createElement( 'div' );
+				document.body.appendChild( container );
+
+				camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 15 );
+				camera.position.set( 3, 0.15, 3 );
+
+				cameraTarget = new THREE.Vector3( 0, -0.25, 0 );
+
+				scene = new THREE.Scene();
+				scene.fog = new THREE.Fog( 0x72645b, 2, 15 );
+
+
+				// Ground
+
+				var plane = new THREE.Mesh( new THREE.PlaneGeometry( 40, 40 ), new THREE.MeshPhongMaterial( { ambient: 0x999999, color: 0x999999, specular: 0x101010 } ) );
+				plane.rotation.x = -Math.PI/2;
+				plane.position.y = -0.5;
+				scene.add( plane );
+
+				plane.receiveShadow = true;
+
+
+				// PLY file
+
+				var loader = new THREE.PLYLoader();
+				loader.addEventListener( 'load', function ( event ) {
+
+					var geometry = event.content;
+					var material = new THREE.MeshPhongMaterial( { ambient: 0x0055ff, color: 0x0055ff, specular: 0x111111, shininess: 200 } );
+					var mesh = new THREE.Mesh( geometry, material );
+
+					mesh.position.set( 0, - 0.25, 0 );
+					mesh.rotation.set( 0, - Math.PI / 2, 0 );
+					mesh.scale.set( 0.001, 0.001, 0.001 );
+
+					mesh.castShadow = true;
+					mesh.receiveShadow = true;
+
+					scene.add( mesh );
+
+				} );
+				loader.load( './models/ply/ascii/dolphins.ply' );
+
+				// Lights
+
+				scene.add( new THREE.AmbientLight( 0x777777 ) );
+
+				addShadowedLight( 1, 1, 1, 0xffffff, 1.35 );
+				addShadowedLight( 0.5, 1, -1, 0xffaa00, 1 );
+
+				// renderer
+
+				renderer = new THREE.WebGLRenderer( { antialias: true, alpha: false } );
+				renderer.setSize( window.innerWidth, window.innerHeight );
+
+				renderer.setClearColor( scene.fog.color, 1 );
+
+				renderer.gammaInput = true;
+				renderer.gammaOutput = true;
+				renderer.physicallyBasedShading = true;
+
+				renderer.shadowMapEnabled = true;
+				renderer.shadowMapCullFace = THREE.CullFaceBack;
+
+				container.appendChild( renderer.domElement );
+
+				// stats
+
+				stats = new Stats();
+				stats.domElement.style.position = 'absolute';
+				stats.domElement.style.top = '0px';
+				container.appendChild( stats.domElement );
+
+				// resize
+
+				window.addEventListener( 'resize', onWindowResize, false );
+
+			}
+
+			function addShadowedLight( x, y, z, color, intensity ) {
+
+				var directionalLight = new THREE.DirectionalLight( color, intensity );
+				directionalLight.position.set( x, y, z )
+				scene.add( directionalLight );
+
+				directionalLight.castShadow = true;
+				// directionalLight.shadowCameraVisible = true;
+
+				var d = 1;
+				directionalLight.shadowCameraLeft = -d;
+				directionalLight.shadowCameraRight = d;
+				directionalLight.shadowCameraTop = d;
+				directionalLight.shadowCameraBottom = -d;
+
+				directionalLight.shadowCameraNear = 1;
+				directionalLight.shadowCameraFar = 4;
+
+				directionalLight.shadowMapWidth = 1024;
+				directionalLight.shadowMapHeight = 1024;
+
+				directionalLight.shadowBias = -0.005;
+				directionalLight.shadowDarkness = 0.15;
+
+			}
+
+			function onWindowResize() {
+
+				camera.aspect = window.innerWidth / window.innerHeight;
+				camera.updateProjectionMatrix();
+
+				renderer.setSize( window.innerWidth, window.innerHeight );
+
+			}
+
+			function animate() {
+
+				requestAnimationFrame( animate );
+
+				render();
+				stats.update();
+
+			}
+
+			function render() {
+
+				var timer = Date.now() * 0.0005;
+
+				camera.position.x = Math.sin( timer ) * 3;
+				camera.position.z = Math.cos( timer ) * 3;
+
+				camera.lookAt( cameraTarget );
+
+				renderer.render( scene, camera );
+
+			}
+
+		</script>
+	</body>
+</html>