I'm working on an IK system, and I'm getting some weird behaviors in cases where an axis of rotation (determined from a cross product) flips. In these cases, I would like to detect
So the question is, given two vectors, A and B, which are both orthogonal to an axis N, is it possible to know for which values cross(A, B) is in the same direction as N, and for which values it is in the opposite direction?
In other words, imagine A and B are vectors in a plane. A is fixed, and B is rotating freely in the plane. Is it possible, only knowing the values of A and B, to know whether cross(A, B) is pointing ""into"" or ""out of"" the plane?
