Help finding uv coordinates of a specific point.
Posted: Thu Jul 20, 2006 12:26 am
Hello all,
I want to find uv coordinates of a specific point in a mesh, I don't want uv coordinates of a vertex, i can do that already, so if I have a triangle and i click in the middle i want uv coordinates of that point.
What I do at the moment is :
-Get the point where the user clicked and the triangle selected using ISceneCollisionManager::getCollisionPoint()
-Then I traverse the mesh vertices comparing the vertices returned by getCollisionPoint, when a vertex matches i get the uv coordinates.
This is what I have at the moment, the collision point, and the three vertices of the triangle collided including uv coordinates.
Now I don't how to continue with the problem
Also the mesh has transformations applied so i think it's more difficult. I need to find the uv coordinate of that exact point but i really don't know much about 3dgfx, so i dont know if i have to work with the matrices or apply some formula.
Sorry for the crappy english, I hope it's 'understandable' (is that a word?
)
I want to find uv coordinates of a specific point in a mesh, I don't want uv coordinates of a vertex, i can do that already, so if I have a triangle and i click in the middle i want uv coordinates of that point.
What I do at the moment is :
-Get the point where the user clicked and the triangle selected using ISceneCollisionManager::getCollisionPoint()
-Then I traverse the mesh vertices comparing the vertices returned by getCollisionPoint, when a vertex matches i get the uv coordinates.
This is what I have at the moment, the collision point, and the three vertices of the triangle collided including uv coordinates.
Now I don't how to continue with the problem
Also the mesh has transformations applied so i think it's more difficult. I need to find the uv coordinate of that exact point but i really don't know much about 3dgfx, so i dont know if i have to work with the matrices or apply some formula.Sorry for the crappy english, I hope it's 'understandable' (is that a word?
)
