Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!uwvax!rennet.cs.wisc.edu!stuart
From: stuart@rennet.cs.wisc.edu (Stuart Friedberg)
Newsgroups: comp.graphics
Subject: Re: bspline program
Summary: Source for automatic b-spline curve generation
Message-ID: <6785@spool.cs.wisc.edu>
Date: 5 Dec 88 02:07:25 GMT
References: <737@mv04.ecf.toronto.edu> <277@istsists.ca>
Sender: news@spool.cs.wisc.edu
Reply-To: stuart@rennet.cs.wisc.edu (Stuart Friedberg)
Organization: U of Wisconsin CS Dept
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In article <277@istsists.ca> robbins@istsists.ca (John Robbins) writes:
>	I should be very interested to know of any code that does take a
>set of data points and with the minimum amount of operator intervention

I have used the following source for both open and close cubic
B-splines.  The method also works for cubic rational B-splines.

O. Lozover & K. Preiss,
"Automatic Construction of a Cubic B-Spline Representation for a General Curve"
Computers and Graphics, Vol. 7, No. 2, pp. 149-153, 1983

It is usually a simple task to generate code from a published algorithm
or set of equations.  It is usually hopeless to try to find code that
does what you want, in the languages you want, using the data
representation you want, for the graphics devices you want.

Stu Friedberg  stuart@cs.wisc.edu