We had trouble with the evolution to two dimensional forms for shaping flow. With both one and two dimensions, the problem is the same: designers use shapes without using form, and it is very difficult to avoid cheating. This temptation is worse with the shapes associated with two dimensional flow, we think because the effect is actually harder to read. As a result, what we did was spend time on one project concerned with this technique exclusively. Then jumping to the 3D cases. All of those use 2D methods as well as the 3D. | ||