First the best wishes for 2009.

Is it with mesh2 objects possible to give the out-site en the in-site 
different textures? What can I do with the texture_list?

Thanks...
Wijnand Nijs

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"Wijnand Nijs" <w.n### [at] alf4alldemonnl> wrote in message 
news:495cdbc8$1@news.povray.org...
> First the best wishes for 2009.
>
> Is it with mesh2 objects possible to give the out-site en the in-site 
> different textures? What can I do with the texture_list?

Yes, you can give the inside and outside of a POV-Ray object different 
textures. By default they're the same, but you can use the 
'interior_texture'  object modifier to specify a different texture for the 
interior surfaces. Your mesh2 will need to have consistently defined 
normals.

The texture_list enables you to specify different textures for use in the 
mesh2 object. Each texture gets an index that can be used in the 
face_indices section to assign a different texture to the different faces in 
the mesh2 object, or optionally different textures for each of the vertices 
of each face. From the help: "To specify a texture for an individual mesh 
triangle, specify a single integer texture index following the face-index 
vector for that triangle. To specify three textures for vertex-texture 
interpolation, specify three integer texture indices (separated by commas) 
following the face-index vector for that triangle."

I don't know how the two things work together if both are specified on the 
same mesh2 object (I've never tried that). I would guess that you get a 
single interior texture and that it would use the texture_list textures for 
the outside.

Regards,
Chris B.

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Wijnand Nijs <w.n### [at] alf4alldemonnl> wrote:
> First the best wishes for 2009.
>
> Is it with mesh2 objects possible to give the out-site en the in-site
> different textures? What can I do with the texture_list?

IIRC this is possible if your mesh does not make use of the texture_list, so
that you specify a single texture for the whole mesh instead. However, if
someone knows how to get this into the texture_list, I'd be glad to hear about
it.

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Thanks Chris and Clipka. For test results see p.b.images.

Chris B schreef:
> 
> "Wijnand Nijs" <w.n### [at] alf4alldemonnl> wrote in message 
> news:495cdbc8$1@news.povray.org...
>> First the best wishes for 2009.
>>
>> Is it with mesh2 objects possible to give the out-site en the in-site 
>> different textures? What can I do with the texture_list?
> 
> Yes, you can give the inside and outside of a POV-Ray object different 
> textures. By default they're the same, but you can use the 
> 'interior_texture'  object modifier to specify a different texture for 
> the interior surfaces. Your mesh2 will need to have consistently defined 
> normals.
> 
> The texture_list enables you to specify different textures for use in 
> the mesh2 object. Each texture gets an index that can be used in the 
> face_indices section to assign a different texture to the different 
> faces in the mesh2 object, or optionally different textures for each of 
> the vertices of each face. From the help: "To specify a texture for an 
> individual mesh triangle, specify a single integer texture index 
> following the face-index vector for that triangle. To specify three 
> textures for vertex-texture interpolation, specify three integer texture 
> indices (separated by commas) following the face-index vector for that 
> triangle."
> 
> I don't know how the two things work together if both are specified on 
> the same mesh2 object (I've never tried that). I would guess that you 
> get a single interior texture and that it would use the texture_list 
> textures for the outside.
> 
> Regards,
> Chris B.

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"clipka" <nomail@nomail> wrote in message 
news:web.495da8747707fe405510c690@news.povray.org...
> Wijnand Nijs <w.n### [at] alf4alldemonnl> wrote:
>> First the best wishes for 2009.
>>
>> Is it with mesh2 objects possible to give the out-site en the in-site
>> different textures? What can I do with the texture_list?
>
> IIRC this is possible if your mesh does not make use of the texture_list, 
> so
> that you specify a single texture for the whole mesh instead. However, if
> someone knows how to get this into the texture_list, I'd be glad to hear 
> about
> it.

The code sample I've added to the thread in povray.binaries.images uses 
both, but I don't see any way of getting interior textures to map to the 
texture_list inside the mesh2 definition.

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