private static int GetYFromSquare(MapSquare square, double zoom)
{
double latitude = square.BottomLatitude * Math.PI / 180.0;
return((int)Math.Round((1.0f - (System.Math.Log(System.Math.Tan(latitude) + (1.0f / System.Math.Cos(latitude)))) / System.Math.PI) / 2f * (double)zoom));
}
private static int GetXFromSquare(MapSquare square, double zoom)
{
return((int)Math.Round(((square.LeftLongitude + 180.0) / 360.0) * (double)zoom));
}
public bool Contains(MapSquare otherSquare)
{
return(_topLatitude >= otherSquare.TopLatitude && _bottomLatitude <= otherSquare.BottomLatitude && _leftLongitude <= otherSquare.LeftLongitude && _rightLongitude >= otherSquare.RightLongitude);
}
public MapTile(MapSquare square, double zoom)
{
_zoom = GetTileZoom(zoom);
_xNumber = GetXFromSquare(square, Math.Pow(2, _zoom));
_yNumber = GetYFromSquare(square, Math.Pow(2, _zoom));
}
public bool Intersects(MapSquare otherSquare)
{
return((_topLatitude <= otherSquare.BottomLatitude && _bottomLatitude >= otherSquare.TopLatitude) && (_rightLongitude <= otherSquare.LeftLongitude && _leftLongitude >= otherSquare.RightLongitude));
}
