Hi, I am really stuck on 3D math, and I am making a flight sim game in OpenGL, and I realized I don't know how to code the movement of the plane. For instance: when i turn the plane upwards how would I calculate the path it would travel on? I know rotation on the y axis, but a can't figure it out on the x axis(the problem above). I would appreciate any help, this is making my head hurt :-). Thanks!