Le 2022-04-28 à 17:29, Kenneth a écrit :

> warp{...} for example). For mesh and mesh2 objects, the model requires an
> inside_vector for the media to show up. Unfortunately, bicubic_patch objects
> either don't work or don't show the media.
> 

There is a simple explanation for the bicubic_patch : That object only 
have a surface, it have zero thickness.
The same will happen with the triangle primitive.

Even if you have an union of them forming a completely closed shape, 
they'll never have an interior.

What would be required is the possibility to integrate bicubic_patch in 
a mesh.

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