code: function(mat,updateNormals) {
  				if(updateNormals === undefined){
  					updateNormals = true;
  				}
  				var l = this.vertices.length;
  				for(var i=0;i<l;i++){
  					var v = this.vertices[i];
  					v.set(mat.applyTo(v));
  				}
  				if(updateNormals){
  					this.computeFaceNormals();
  				}
  				return this;
  			}
docs: Applies the given matrix transform to all mesh vertices. If the
  updateNormals flag is true, all face normals are updated automatically,
  however vertex normals need a manual update.
  @param mat
  @param updateNormals
  @return itself