urho3d/Urho3D — pull request #136 by hjmediastudios (2014-01-19 01:04:17+00:00)
Title: Added a convenience function to find the angle between two vectors.

In working with more code where +Y is not necessarily up, I've been often using a convenience function in my personal branch that returns the angle between two vectors. This might be useful for others, as well, so I've decided to propose it as a change.