Calculates the ScreenOrientation from a camera pose. It is assumed that LandscapeLeft is the natural camera
orientation, so for example in identity pose. For the edge case screen facing up it will return Portrait and for
screen facing down it will return PortraitUpsideDown.
Calculates the ScreenOrientation from a camera pose. It is assumed that LandscapeLeft is the natural camera
orientation, so for example in identity pose. For the edge case screen facing up it will return Portrait and for
screen facing down it will return PortraitUpsideDown.