Inside settings the orientation values are three text boxes, however valid values have set ranges http://dev.w3.org/geo/api/spec-source-orientation.html#rotations We can offer range sliders to allow for a more usable experience. A similar control: http://www.youtube.com/watch?feature=player_detailpage&v=8b2FkMa-Yqo#t=311s
The 3D object GUI proposed in issue 101797 is a better choice, I'd say. *** This bug has been marked as a duplicate of bug 101797 ***