OpenGL + Camera view + Google map + Overlay + Menu
Overlay crashed each other with button in the same code.
Functions of Button were replaced to menu.
And overlay crashed with the code of rotational map, too.
Rotational map was not selected. Actually, Rotational map is some confused to see where here are.
And rotated map as 180 degree has reversed touch point.
Touch point has to be rotated in map at the same time.
Overlay with button and rotational map is not applied yet.