coordinate For Pixel
Calculate a geographical coordinate(i.e., longitude-latitude pair) that corresponds to a screen coordinate.
The screen coordinate is in MapOptions.size platform pixels relative to the top left of the map (not of the whole screen).
Map must be fully loaded for getting an altitude-compliant result if using 3D terrain.
Return
Returns a geographical coordinate corresponding to the x y coordinates on the screen.
Parameters
pixel
A screen coordinate represented by x y coordinates.