Re: [Quesa-develop] Textured TriMeshes

[Dair G. <da...@re...>]

Roger Holmes wrote:

>> Take a TriMesh in the shape of a cube (for example). I wish to put a
>> different texture on each square face, and have full independent
>> control over the u,v coords for that texture on that face.
=2E..
>They do not have to be the same vertex, they just have the same
>3D co-ordinates, that way you can have different normals and UVs
>on the vertices.

=46or the case of a cube, you can use a box geometry and just assign a
different texture to each face (see the createGeomTexturedBox function
in Geom Test.c: the uv parameterisation for a box maps the texture to
the whole face).

=46or the general case of a TriMesh, as Roger says you will need
"duplicate" vertices.

The Mesh geometry has the notion of "corners" which allow you to create
a vertex that has different attributes depend ing on the face which
refernces it - but ultimately this has to be turned into duplicate
vertices when submitting to an API like OpenGL or D3D.


-dair
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