> Tom is talking about a calculation in 2D that has a 3D symmetric > representation where a rectangle that lies on R=0 will map to the entire > coffee can. It is a one to many mapping that, to my knowledge, is not > simple in DX. It is possible, though somewhat crude.
sorry if i've been missing the point. can you explain to me if this is the approximation you are talking about? take N identical 2D sheets of quads, and stack them into a 3D volume of cubes so the data values are constant along the stacking axis, and then warp that volume into a sphere or torus. or something different? nancy
