Tile coordinate convert code

coordinateUtil.cs

private (double, double) convertWsg84Coordinate(double x, double y, double z)
{
  double lat = Math.Asin(z / Math.Sqrt(x * x + y * y + z * z)) * (180 / Math.PI);
  double lot = -Math.Atan2(y, x) * (180 / Math.PI);
  return (lat, lot);
}

//wsg84 coordinate
public (string, string) calculateTileIdLatLot(double lat, double lot, int level)
{
  double xId = Math.Truncate(((lot + 180) / 36) * Math.Pow(2, level));
  double yId = Math.Truncate(((lat + 90) / 36) * Math.Pow(2, level));

  var formatCoordinate = getTileName(xId, yId);
  return formatCoordinate;
}
private (string, string) getCoordinateFormat(double x, double y)
{
  string formatYCoordinateName = (Math.Log10(x) + 1 > 5 ? "00000000.##" : "0000.##");
  string formatXCoordinateName = (Math.Log10(y) + 1 > 5 ? "00000000.##" : "0000.##");
  return (formatXCoordinateName, formatYCoordinateName);
}

        public (string, string) getTileName(double xCoordinate, double yCoordinate)
        {
            var formatCoordinate = getCoordinateFormat(xCoordinate, yCoordinate);
            return (xCoordinate.ToString(formatCoordinate.Item2), yCoordinate.ToString(formatCoordinate.Item1));
        }