Hi.
In the manual in vec_for_angle, theres a place in wich you can see the algorithm for calculation of vertex trough pan and tilt

Do someone knows where I can see the algorithm for vec_to_angle?
This function is clever in a way I cant describe.

I've added the algorithm:

http://manual.3dgamestudio.net/avec_to_angle.htm

real math ^^

Thank a lot for this, but
How did you avoid the crash when VECTOR.y is equal to 0 in the ANGLE.pan?

With a case differentiation. And also, better use atan2 when you really program this algorithm. Such subtleties don't appear in an algorithm description.

Ok thanks a lot, this is exactly what I was looking for