Russell Jones wrote:
IDK about physics, but AIUI, Z points from side to side, Y points down and X points diagonally; it's Λ that points up.
Only if your computer screen is oriented vertically. If you're using a tablet in your lap, Λ points forward and Y points backwards. So obviously the code should interrogate the orientation sensor of the device it's running on, if it has one, to figure out the correct naming of the unit vector constants. -- Greg