Alain <aze### [at] qwertyorg> wrote:

> > Alain<aze### [at] qwertyorg>  wrote:

>
> Quick and dirty:
> - Remove the call to the other macro.
> - Start your prism.
> - Call the macro twice: once with the inside radius of your wall and
> travel it to create the iner part of the prism. (use a loop)
> - SAVE the first point!
> - Call the macro a second time with the outside radius and travel the
> spline backward to create the outside of the prism.
> - Close the prism by adding the last point equal to the first one.
> - Add any needed transformation and texturing.
> - Finish the prism.
>
> That's for a prism using a linear_spline interpolation.
> If you want to use a cubic_spline interpolation, then the last TWO
> points must repeat the first two points. The first and last points are
> controls, the second and secont to last are real points.
>
>
> Alain

Interesting! This is what I am looking for. Let me see if I can get it to work.
Thanks...

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