Regular API function

Description	Retrieves the navigation and selection mode for the mouse. See also sim.setNavigationMode.
C synopsis	simInt simGetNavigationMode()
C parameters	None
C return value	navigation mode if operation was successful, -1 otherwise
Lua synopsis	int navigationMode=sim.getNavigationMode()
Lua parameters	Similar to the C-function counterpart
Lua return values	Similar to the C-function counterpart.