my objective is to create a convex hull out of a 3D set of points.
The function TetGenConvexHull  does the big part, the only problem is that it only creates triangles from the given points.
If the set of points represents a cube, the function doesn't create 6 squares as facets, but 12 triangles, of which two are always on the same plane.
This makes it harder to understand what is what during visualization (superfluous lines).
Is there a way to solve this problem?