gboolean khmaps_coord_to_mapcoord ( const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
void khmaps_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest );
gboolean khmaps_coord_to_mapcoord ( const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest );
void khmaps_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest );