/// <summary>
/// Format the given longitude
/// Possible formats:
/// d - Dezimalgrad, zum Beispiel -122.2°
/// g - Grad, Minuten, Sekunden, zum Beispiel 122°05'06.24"W
/// m - Grad, Dezimalminuten, zum Beispiel 122° 36.875' W
/// Grad, Dezimalgrad ohne Grad-Zeichen
/// </summary>
/// <param name="longitude"></param>
/// <param name="format">Format to be used: d, g or m</param>
/// <returns></returns>
public static string ToLongString(this SexagesimalCoordinate longitude, string format = "")
{
var longChar = longitude.DecimalValue >= 0 ? "O" : "W";
switch (format)
{
case "d":
return($"{longitude}°");
case "g":
return($"{Math.Abs(longitude.Degrees)}° {longitude.Minutes}' {longitude.Seconds:F2}\" {longChar}");
case "m":
return($"{Math.Abs(longitude.Degrees)}° {longitude.Minutes + longitude.Seconds / 60.0:F4}' {longChar}");
}
return($"{longitude}");
}
public static SexagesimalCoordinate Parse(string text)
{
text = text
.Trim()
.ToUpper()
.Replace(",", ".");
// -32° 18.385'
var match = new Regex(@"^([+-]?[0-9]+)\s*°\s*([0-9]+(\.([0-9]+))?)\s*'$").Match(text);
if (match.Success)
{
var degrees = int.Parse(match.Groups[1].Value, NumberStyles.Integer | NumberStyles.AllowLeadingSign);
var minutes = double.Parse(match.Groups[2].Value, NumberStyles.Float, CultureInfo.InvariantCulture);
var coordinate = new SexagesimalCoordinate(degrees, minutes);
return(coordinate);
}
// 32° 18.385' N
match = new Regex(@"^([+-]?[0-9]+)\s*°\s*([0-9]+(\.([0-9]+))?)\s*'\s*([NSOW])$").Match(text);
if (match.Success)
{
var degrees = int.Parse(match.Groups[1].Value, NumberStyles.Integer | NumberStyles.AllowLeadingSign);
var minutes = double.Parse(match.Groups[2].Value, NumberStyles.Float, CultureInfo.InvariantCulture);
if ("SW".Contains(match.Groups[5].Value))
{
degrees = -degrees;
}
var coordinate = new SexagesimalCoordinate(degrees, minutes)
{
Type = "NS".Contains(match.Groups[5].Value)
? SexagesimalCoordinate.CoordinateType.Latitude
: SexagesimalCoordinate.CoordinateType.Longitude
};
return(coordinate);
}
// 37°25'19.07"N
match = new Regex("^([0-9]+)\\s*°\\s*([0-9]+)\\s*'\\s*([0-9]+(\\.([0-9]+))?)\\s*\"\\s*([NSOW])$").Match(text);
if (match.Success)
{
var degrees = int.Parse(match.Groups[1].Value, NumberStyles.Integer | NumberStyles.AllowLeadingSign);
var minutes = int.Parse(match.Groups[2].Value, NumberStyles.Integer);
var seconds = double.Parse(match.Groups[3].Value, NumberStyles.Float, CultureInfo.InvariantCulture);
if ("SW".Contains(match.Groups[6].Value))
{
degrees = -degrees;
}
var coordinate = new SexagesimalCoordinate(degrees, minutes, seconds)
{
Type = "NS".Contains(match.Groups[6].Value)
? SexagesimalCoordinate.CoordinateType.Latitude
: SexagesimalCoordinate.CoordinateType.Longitude
};
return(coordinate);
}
// -37.7°
match = new Regex("^([+-]?[0-9]+(\\.([0-9]+))?)\\s*°?$").Match(text);
if (match.Success)
{
var degrees = double.Parse(match.Groups[1].Value, NumberStyles.Float | NumberStyles.AllowLeadingSign, CultureInfo.InvariantCulture);
var coordinate = new SexagesimalCoordinate(degrees);
return(coordinate);
}
// 37.7° S
match = new Regex("^([0-9]+(\\.([0-9]+))?)\\s*°?\\s*([NSOW])$").Match(text);
if (match.Success)
{
var degrees = double.Parse(match.Groups[1].Value, NumberStyles.Float | NumberStyles.AllowLeadingSign, CultureInfo.InvariantCulture);
if ("SW".Contains(match.Groups[4].Value))
{
degrees = -degrees;
}
var coordinate = new SexagesimalCoordinate(degrees)
{
Type = "NS".Contains(match.Groups[4].Value)
? SexagesimalCoordinate.CoordinateType.Latitude
: SexagesimalCoordinate.CoordinateType.Longitude
};
return(coordinate);
}
// 37 25 19.07
match = new Regex("^([0-9]+)\\s*([0-9]+)\\s*([0-9]+(\\.([0-9]+))?)\\s*([NSOW])?$").Match(text);
if (match.Success)
{
var degrees = int.Parse(match.Groups[1].Value, NumberStyles.Integer | NumberStyles.AllowLeadingSign);
var minutes = int.Parse(match.Groups[2].Value, NumberStyles.Integer);
var seconds = double.Parse(match.Groups[3].Value, NumberStyles.Float, CultureInfo.InvariantCulture);
if (!string.IsNullOrEmpty(match.Groups[6].Value) && "SW".Contains(match.Groups[6].Value))
{
degrees = -degrees;
}
var coordinate = new SexagesimalCoordinate(degrees, minutes, seconds)
{
Type = "NS".Contains(match.Groups[6].Value)
? SexagesimalCoordinate.CoordinateType.Latitude
: SexagesimalCoordinate.CoordinateType.Longitude
};
return(coordinate);
}
return(new SexagesimalCoordinate(0.0));
}
