kurtz le pirate <kur### [at] gmailcom> wrote:

> But I'm still struggling with the color story.

You're doing exactly the right things for your geometry.   Make sure you get the
normals set correctly for the smooth_triangles, so you get a nice smooth
surface.
Let me know if you're struggling there - I got it right a while back after
struggling with that myself - for the Bezier patch paper, IIRC.

What I was trying to suggest in my first post was:

"By using the texture_list it is possible to specify a texture per triangle or
even per vertex in the mesh. In the latter case the three textures per triangle
will be interpolated. To let POV-Ray know what texture to apply to a triangle,
the index of a texture is added to the face_indices list, after the face index
it belongs to.

http://www.povray.org/documentation/view/3.7.1/68/

scroll down to:

1.3.2.2.3 A separate texture per triangle


Presumably POV-Ray will interpolate the textures across the triangle surface
between the 3 vertices.

For anything more advanced that you may need, I'd suggest looking at hgpovray38
by Jerome Grimbert (LeForgeron)
https://wiki.povray.org/content/User:Le_Forgeron#Which_colourspace_.3F




- Bill

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