kurtz le pirate <kur### [at] gmailcom> wrote:
> hello,
>
> i would try to make a ribbon that follows a curve defined by a 3d spline.
>
> which method to use?

Are you thinking of something similar to what is shown in this thread ?

http://news.povray.org/povray.binaries.images/thread/%3Cweb.4d04e35320256a0cc734aecd0%40news.povray.org%3E/
From: Tor Olav Kristensen
Subject: Spacing of points along natural cubic splines
Date: 12 Dec 2010 15:05:01

If so, then follow the link to the message thread with the source code.

These searches may also be relevant:

https://www.google.com/search?q="frenet+frame"+along+spline
https://www.google.com/search?q="orthogonal+axes"+spline

https://www.google.com/search?q=arc+length+parameterization+spline
https://www.google.com/search?q=spline+reparameterization

--
Tor Olav
http://subcube.com

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