title: approach for array of arrays
body: <p>I'm doing this graphics project in which I have a set of points(in 3 coordinates)and have to transform them via matrix arithmetic.Each point needs to be transformed(rotation,scaling etc) and stored back.The obvious approach I figured was to use a 2-D array of size n by 3 matrix where every row would contain 3 values (x,y,z).Is there any better approach using vectors or structs?</p>