> The difficulty imo resides> with the use of isosurfaces which have overhangs. A height_field would> be easier in this case.
Do you specifically want overhangs or not? If not then you can rewrite
your isosurface function instead of f(x,y,z) put something like
y-f(x,0,z) which will guarantee no overhangs (more like a height field).
You'll need to change the function details though to get a similar shape
as before.
