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From: kellow@rockne.helios.nd.edu (John Kellow)
Newsgroups: comp.graphics
Subject: Bezier Surface Patches -> NURBS ??
Message-ID: <1991Mar14.225606.26325@news.nd.edu>
Date: 14 Mar 91 22:56:06 GMT
Sender: news@news.nd.edu (USENET News System)
Organization: University of Notre Dame,  Notre Dame
Lines: 17



I am trying to convert some bezier surface patch data to NURB surface
patches and I was wondering if someone could point me to a good reference
on doing this (or even some examples of source code).  I have a book 
entitled "Curves and Surfaces for Computer Aided Geometric Design" by G. Farin
but I find it very technical and I don't quite see the relationship between
the bezier control points and the NURB control points (and knot vectors).

I think what I have is an array of control points representing bezier curves
with degree up to 7.  Any advice (even "its too complicated, you're wasting
your time") would be most appreciated.


John Kellow
kellow@ndcheg.cheg.nd.edu