code: public static void transform(Matrix4d rotTrans, Point3d[] x) {
  		for (Point3d p : x) {
  			rotTrans.transform(p);
  		}
  	}
docs: Transform all points with a 4x4 transformation matrix.
  
  @param rotTrans
  4x4 transformation matrix
  @param x
  array of points. Point objects will be modified