I'm trying to export camera from Rhino, as soon as the OBJ does not have camera information in it what I'm doing is just copy-paste the camera coordinates and rotation.
With the rotation I have troubles. So what I'm doing is I measure the angle between the Z axis and the camera direction in the ZX plane and ZY plane projection (the camera pointing down). That works only for the small angles, the bigger angle the bigger mistake. I do not touch the third camera coordinate because it is just aligned with the x coordinate.
I will be very appreciated for the help