Re: Polyhedral Cone

In article <[EMAIL PROTECTED]>,
 "Liu Tong" <[EMAIL PROTECTED]> writes:
 >Where can I find an algorithm for the conversion between Face Normal
 >Representation of a cone and the Positive Span Representation of a cone?
 >Thanks very much!
 >
 >--
 >Liu Tong
 >
 >
this is computational geometry. there are several resources for software
maybe here:
 CGAL web page: http://www.cgal.org/

there is a FAQ:
 http://www.eskimo.com/~scs/C-faq/top.html
 
 "The C-FAQ Book" ISBN 0-201-84519-9

there is another newsgroup:
news:comp.graphics.algorithms

and there is 
Joe O'Rourke's textbook "Computational Geometry in C"

hth
peter