Thanks for all those links. I'll need some time flicking through
those, especially if I want to understand them... :-)


--
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights
Email: Tim### [at] gmxde

>
> > The difficult thing is that I need a system which will convert
> > 4 corners to one patch.
> >
>
> Don't know what exactly you want to achieve but how about generating a
> grid of curves that goes through all given control points (heights).
>
> http://users.pandora.be/desi-iii/SecretsE.html
>
> Third section of the page (this would also be a nice spline/curve type
> for a future POV-Ray version).
>
>
> From this grid it should be possible to construct a Gordon Surface:
>
> http://www.math.hmc.edu/
> ~gu/math142/mellon/Application_to_CAGD/Surface_Construction_Schem.html#g
> ordon
>
> http://olli.informatik.uni-
> oldenburg.de/Grafiti3/grafiti/flow11/page3.html
>
> http://www.cg.tuwien.ac.at/studentwork/CESCG99/MKuklisova/clanok.html
> http://www.cg.tuwien.ac.at/studentwork/CESCG99/MKuklisova/node1.html
>
> Due to lack of mathematical skills I've not been able to come up with a
> macro that can generate these surfaces :(
>
> Ingo

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