Updated builds.

build/three.js

@@ -8845,6 +8845,154 @@ THREE.BufferGeometry.prototype = {
 
 	},
 
+	fromGeometry: function ( geometry, settings ) {
+
+		settings = settings || { 'vertexColors': THREE.NoColors };
+
+		var vertices = geometry.vertices;
+		var faces = geometry.faces;
+		var faceVertexUvs = geometry.faceVertexUvs;
+		var vertexColors = settings.vertexColors;
+		var hasFaceVertexUv = faceVertexUvs[ 0 ].length > 0;
+		var hasFaceVertexNormals = faces[ 0 ].vertexNormals.length == 3;
+
+		var positions = new Float32Array( faces.length * 3 * 3 );
+		this.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
+
+		var normals = new Float32Array( faces.length * 3 * 3 );
+		this.addAttribute( 'normal', new THREE.BufferAttribute( normals, 3 ) );
+
+		if ( vertexColors !== THREE.NoColors ) {
+
+			var colors = new Float32Array( faces.length * 3 * 3 );
+			this.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );
+
+		}
+
+		if ( hasFaceVertexUv === true ) {
+
+			var uvs = new Float32Array( faces.length * 3 * 2 );
+			this.addAttribute( 'uvs', new THREE.BufferAttribute( uvs, 2 ) );			
+
+		}
+
+		for ( var i = 0, i2 = 0, i3 = 0; i < faces.length; i ++, i2 += 6, i3 += 9 ) {
+
+			var face = faces[ i ];
+
+			var a = vertices[ face.a ];
+			var b = vertices[ face.b ];
+			var c = vertices[ face.c ];
+
+			positions[ i3     ] = a.x;
+			positions[ i3 + 1 ] = a.y;
+			positions[ i3 + 2 ] = a.z;
+			
+			positions[ i3 + 3 ] = b.x;
+			positions[ i3 + 4 ] = b.y;
+			positions[ i3 + 5 ] = b.z;
+			
+			positions[ i3 + 6 ] = c.x;
+			positions[ i3 + 7 ] = c.y;
+			positions[ i3 + 8 ] = c.z;
+
+			if ( hasFaceVertexNormals === true ) {
+
+				var na = face.vertexNormals[ 0 ];
+				var nb = face.vertexNormals[ 1 ];
+				var nc = face.vertexNormals[ 2 ];
+
+				normals[ i3     ] = na.x;
+				normals[ i3 + 1 ] = na.y;
+				normals[ i3 + 2 ] = na.z;
+
+				normals[ i3 + 3 ] = nb.x;
+				normals[ i3 + 4 ] = nb.y;
+				normals[ i3 + 5 ] = nb.z;
+
+				normals[ i3 + 6 ] = nc.x;
+				normals[ i3 + 7 ] = nc.y;
+				normals[ i3 + 8 ] = nc.z;
+
+			} else {
+
+				var n = face.normal;
+
+				normals[ i3     ] = n.x;
+				normals[ i3 + 1 ] = n.y;
+				normals[ i3 + 2 ] = n.z;
+
+				normals[ i3 + 3 ] = n.x;
+				normals[ i3 + 4 ] = n.y;
+				normals[ i3 + 5 ] = n.z;
+
+				normals[ i3 + 6 ] = n.x;
+				normals[ i3 + 7 ] = n.y;
+				normals[ i3 + 8 ] = n.z;
+
+			}
+
+			if ( vertexColors === THREE.FaceColors ) {
+
+				var fc = face.color;
+
+				colors[ i3     ] = fc.r;
+				colors[ i3 + 1 ] = fc.g;
+				colors[ i3 + 2 ] = fc.b;
+
+				colors[ i3 + 3 ] = fc.r;
+				colors[ i3 + 4 ] = fc.g;
+				colors[ i3 + 5 ] = fc.b;
+
+				colors[ i3 + 6 ] = fc.r;
+				colors[ i3 + 7 ] = fc.g;
+				colors[ i3 + 8 ] = fc.b;
+
+			} else if ( vertexColors === THREE.VertexColors ) {
+
+				var vca = face.vertexColors[ 0 ];
+				var vcb = face.vertexColors[ 1 ];
+				var vcc = face.vertexColors[ 2 ];
+
+				colors[ i3     ] = vca.r;
+				colors[ i3 + 1 ] = vca.g;
+				colors[ i3 + 2 ] = vca.b;
+
+				colors[ i3 + 3 ] = vcb.r;
+				colors[ i3 + 4 ] = vcb.g;
+				colors[ i3 + 5 ] = vcb.b;
+
+				colors[ i3 + 6 ] = vcc.r;
+				colors[ i3 + 7 ] = vcc.g;
+				colors[ i3 + 8 ] = vcc.b;
+
+			}
+
+			if ( hasFaceVertexUv === true ) {
+
+				var uva = faceVertexUvs[ 0 ][ i ][ 0 ];
+				var uvb = faceVertexUvs[ 0 ][ i ][ 1 ];
+				var uvc = faceVertexUvs[ 0 ][ i ][ 2 ];
+
+				uvs[ i2     ] = uva.x;
+				uvs[ i2 + 1 ] = uva.y;
+			
+				uvs[ i2 + 2 ] = uvb.x;
+				uvs[ i2 + 3 ] = uvb.y;
+			
+				uvs[ i2 + 4 ] = uvc.x;
+				uvs[ i2 + 5 ] = uvc.y;
+
+			}
+
+		}
+
+		this.computeBoundingSphere()
+
+		return this;
+
+	},
+
 	computeBoundingBox: function () {
 
 		if ( this.boundingBox === null ) {