Getting UV coordinates of a triangle from screen coordinates

[Pyritie]

Alrighty, so here's what I want. I'm basically trying to make a "model painting" tool so by click-dragging on the screen you can paint on the model's texture.

I already know that I need to get a triangle from the collision manager. I know how to do that. But how do I get the texture coordinates of the closest texel based on a point on that triangle?

[porcus]

1.)pick the triangle
2.)check which triangle from the meshbuffers of your mesh matches the
picked triangle
3.)get the uv coordinates via TCoords (http://irrlicht.sourceforge.net/docu/st ... ertex.html)

[Pyritie]

Mkay, I'll give it a shot.

[Pyritie]

2.)check which triangle from the meshbuffers of your mesh matches the
picked triangle

Is there a way to do that without having to go through each vertex? D:

[Pyritie]

Mhh, I talked with bitplane over irc and it seems the most feasable way to do this is to stick every triangle in the mesh into a map and then use that to get the mesh triangle from the triangleselector triangle. Urgh.

I'll post the code when I'm done with this, in case anyone else wants it.