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From: seth@miro.Berkeley.EDU (Seth Teller)
Newsgroups: comp.graphics
Subject: help with NURBS on SGI h/w
Keywords: NURBS, surface evaluation
Message-ID: <1991Feb19.221646.19527@agate.berkeley.edu>
Date: 19 Feb 91 22:16:46 GMT
Sender: usenet@agate.berkeley.edu (USENET Administrator)
Reply-To: seth@miro.Berkeley.EDU (Seth Teller)
Organization: University of California at Berkeley
Lines: 22

In <44374@ut-emx.uucp> blake@ccwf.cc.utexas.edu (Blake Freeburg) writes:
> I need some help using the SG lib on an RS/6000 and drawing a nurbs surface.
> blake

In <216@usna.NAVY.MIL>, Prof. David F. Rogers (Aerospace) <dfr@usna> writes:
>> You don't need to use the SGI hardware to do this efficiently. Look in
>> the December issue of Computer Aided Design for the paper Dynamic Rational
>> B-spline Surfaces by Rogers and Adlum. It's all there for the taking.
>> Dave Rogers

this seems like poor (or at least not necessarily good) advice.  hundreds
of person-hours have gone into the sgi library so that people like blake
can draw surfaces with simple procedure calls.  why refer them to something
unknown (with all due respect)?

i didn't write the sgi nurbs implementation, but i have several years'
experience working with it and contributing to the development of its
interface and functionality.  please don't sell it so short.

seth

ps blake, example code is on its way.


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