3-D geometry/graphing software... where?

[Loki Jorgenson Rm421]

I am searching for some proficient 3-D graphing software which is
public-domain or, at worst, very cheap.  The actual hardware specific
drivers are not as important as the processing algorithms (projection/
rotation/line-hiding/etc ).  Does anybody have some or know the
where-abouts of some?

	Reply Email direct, please.

Thanks in advance,


Loki Jorgenson				node:  loki at physicsa.mcgill.ca
Physics, McGill University	fax:   (514) 398-3733
Montreal Quebec CANADA		phone: (514) 398-6531