toLatLng method
Implementation
@override
LatLng toLatLng(TileIndex tile) {
final x = tile.x;
final y = tile.y;
final xx = x - 0.5;
final yy = 0.5 - y;
final lat = 90.0 - 360.0 * atan(exp(-yy * 2.0 * pi)) / pi;
final lng = 360.0 * xx;
return LatLng(lat, lng);
}