[comp.graphics] wanted: PD polyhedron intersection

glassner@arisia.Xerox.COM (Andrew Glassner) (01/31/91)

I would like to find a robust, public-domain polyhedron
intersector.  Input to the routine would be two polyhedra
(it's okay if they're restricted to be non-self-intersecting),
and the output is the set of 0 or more polyhedra representing
their intersection(s).  I can guarantee my input polyhedra will
be of genus 0.
This isn't an easy problem to solve in a numerically robust
fashion, but it is well understood, and several solutions are
well documented.  Nevertheless, it's still a tricky program to
write, and I don't want to spend time crafting my own code 
if reliable software already exists.  If anyone has or can point 
me to a stable public-domain routine for polyhedron intersection 
(either Pascal or C would be fine), I'd appreciate a note.  Thanks!

-Andrew Glassner  (glassner.pa@xerox.com)

(I want something public-domain because this is to be part of a
package that I would like to ultimately release back to public domain)