Drawing triangles quickly

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amitjf

thank you very much. somewhy the algorithm for finding the facing triangles is not fine, because... it just wrong, it colours me some wrong triangles and some wont be coloured. When using the function I refer to the camera pivot and not the camera itselfs as its parent is the pivot.
EDIT:
Wait checking again.... don't respond

EDIT:
Checked and yes it not workin right
In every place im placing the camera it shows the same. just rotating the camera change the colors