webvr js meetup initial commit

node_modules/three/examples/js/exporters/STLExporter.js

@@ -0,0 +1,75 @@
+/**
+ * @author kovacsv / http://kovacsv.hu/
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+THREE.STLExporter = function () {};
+
+THREE.STLExporter.prototype = {
+
+	constructor: THREE.STLExporter,
+
+	parse: ( function () {
+
+		var vector = new THREE.Vector3();
+		var normalMatrixWorld = new THREE.Matrix3();
+
+		return function parse( scene ) {
+
+			var output = '';
+
+			output += 'solid exported\n';
+
+			scene.traverse( function ( object ) {
+
+				if ( object instanceof THREE.Mesh ) {
+
+					var geometry = object.geometry;
+					var matrixWorld = object.matrixWorld;
+
+					if ( geometry instanceof THREE.Geometry ) {
+
+						var vertices = geometry.vertices;
+						var faces = geometry.faces;
+
+						normalMatrixWorld.getNormalMatrix( matrixWorld );
+
+						for ( var i = 0, l = faces.length; i < l; i ++ ) {
+
+							var face = faces[ i ];
+
+							vector.copy( face.normal ).applyMatrix3( normalMatrixWorld ).normalize();
+
+							output += '\tfacet normal ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
+							output += '\t\touter loop\n';
+
+							var indices = [ face.a, face.b, face.c ];
+
+							for ( var j = 0; j < 3; j ++ ) {
+
+								vector.copy( vertices[ indices[ j ] ] ).applyMatrix4( matrixWorld );
+
+								output += '\t\t\tvertex ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
+
+							}
+
+							output += '\t\tendloop\n';
+							output += '\tendfacet\n';
+
+						}
+
+					}
+
+				}
+
+			} );
+
+			output += 'endsolid exported\n';
+
+			return output;
+
+		};
+
+	}() )
+
+};