Tex coords in OglModel

[Alex Bilger]

Hello,

OglModel has a Data for defining triangles. How can I tell an OglModel which texture coordinate is associated to each of the local triangles vertices?
In particular, two triangles can share a vertex, but this common vertex can be associated with a different texture coordinate depending on the triangle. Can OglModel handle that?
I tested with a file loaded in the ‘filename’ attribute and it works. But I want to be able to do it with only Datas.

Thanks a lot,

Alex

[Alex Bilger]

A temporary solution is to break the topology so that each vertex is used once and only once by a triangle. The problem is we end up with duplicated vertices and Phong shading does not work (each triangle is independent and does not share anything with another triangle).

[Hugo]

Hi Alex,

we discussed it (indirectly) morning in the Sofa-dev meeting.

We were talking about the Loader and Exporter: avoiding duplication of codes in loaders and exporters while keeping optimal components. OglModel came in the discussion since it not only loads obj files but textures as well …

Maybe Fred could help on this. Let’s keep in touch.
Cheers,

Hugo

[Author]

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