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> Le_Forgeron <jgr### [at] freefr> wrote:
>> If I got the problem exposed in "Smoothing bicubic_patchs, A pain":
>> * you have four non-coplanar points, each pair of the external 4 sided
>> figure connected by cubic splines (each pair is adjacent on its spline,
>> no intermediate point on the spline)
>>
>>
>> Challenge: have a nice surface which joins each splines.
>>
>>
>> For start, an illustration of a possible setting.
>
> Yes, and now if you iteratively made that smaller, you'd approach the true
> surface. I think with smooth_triangles it would look fairly decent.
>
> How you subdivide such rectangles is the challenge, because you have to
> interpolate along the splines.
>
http://hof.povray.org/btfh02.html
This is an image that someone made with the first version of my macro
years ago. Unfortunately, real life has kept me away from this project
and I did not continue with it, I have left the project abandoned for
quite some time. In that image smooth_triangle is used and the mesh is
made from cylinders and spheres. I'm going to try to subdivide the mesh
and see how it looks. I'm rewriting from scratch and there's still a
long way to go to implement tessellations like that. Patience.
Bruno Gimeno
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