[dennispcarlton@gmail.com]

I need to display an irregular shaped point cloud (xyz points) surface in 3d, with contours/isolines. In the examples using heightmaps, data is always either square or rectangular.  Should I be using a heightmap, or some other type of mesh to display these surfaces? For example if my cloud of points forms a circle, I want only show those points within the circle in the 3d surface and not draw anything outside the circle.