This is cool and could be very helpful. (The CSG isosurface include file
does the same thing, but requires using a different syntax to create objects
with.)
Perhaps you can easily tell which direction the closest surface is in for
some primitives by using known facts about them. Spheres and cylinders, for
example, should be easy to do this for.
- Slime
[ http://www.slimeland.com/ ]
