ABX wrote:
> Have you experimented with HF_Sphere macro from shapes.inc ?
> You can modify it to drop all triangles where all three vertices are
> outside section you choosed. Creation with necessary accuracy can take
> some time but created once it can be quickly reused in every next render.

  Thanks! This must be the best solution, I think. I was trying to do it 
directly with a height_field created internally with the function image 
type, but I was having many problems to obtain the right curvature.

  I was not aware of this macro. I'm reading the docs, but really slowly, 
and not arrived yet to the includes: thanks again!


-- 
Jaime Vives Piqueres

La Persistencia de la Ignorancia
http://www.ignorancia.org

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