"Bald Eagle" <cre### [at] netscapenet> wrote:
> Thank, Ingo - for this and all the other attached work.
> The spline + shape from the docs is very informative.
>
> The sor is a centripetal Catmull rom cubic Hermite spline with a tension, or
> exponent of 0.5.
>
> I'm not sure what cubic_spline is, but having played with that one in the past,
> it may not be.  I'm pretty sure that TOK has implemented the natural cubic
> spline.
>...

Yes, I did - some years ago ;-)

Newsgroup: povray.text.scene-files
From: Tor Olav Kristensen
Subject: Even spacing of points along natural cubic splines
Date: 2010-12-12 09:30:00
http://news.povray.org/povray.text.scene-files/thread/%3Cweb.4d04dadb31d78932c734aecd0%40news.povray.org%3E/

--
Tor Olav
http://subcube.com
https://github

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