public static Meridian Create(IPrimeMeridianInfo primeMeridian)
{
if(primeMeridian == null) throw new ArgumentNullException("primeMeridian");
Contract.Ensures(Contract.Result<Meridian>() != null);
var lon = primeMeridian.Longitude;
if (primeMeridian.Unit.Name != "degrees") {
var conversion = SimpleUnitConversionGenerator.FindConversion(primeMeridian.Unit, OgcAngularUnit.DefaultDegrees);
if (conversion != null) {
lon = conversion.TransformValue(lon);
}
else {
throw new InvalidOperationException("Could not convert meridian unit.");
}
}
var result = new Meridian(lon, primeMeridian.Name);
if (primeMeridian.Authority != null) {
int epsgCode;
if (primeMeridian.Authority.Name == "EPSG" && Int32.TryParse(primeMeridian.Authority.Code, out epsgCode))
result.Code = epsgCode;
}
return result;
}
/// <summary>
/// Creates a new instance of GeographicInfo
/// </summary>
public GeographicInfo()
{
_datum = new Datum();
_meridian = new Meridian();
_unit = new AngularUnit();
}
/// <summary>
/// Creates a new instance of GeographicInfo
/// </summary>
public GeographicInfo()
{
_datum = new Datum();
_meridian = new Meridian();
_unit = new AngularUnit();
}
/// <summary>
/// Returns a representaion of this object as a Proj4 string.
/// </summary>
/// <returns></returns>
public string ToProj4String()
{
return(Meridian.ToProj4String() + Datum.ToProj4String());
}
/// <summary>
/// Generates an esri string from the information in this geographic info class, including the name, datum, meridian, and unit.
/// </summary>
/// <returns></returns>
public string ToEsriString()
{
return(@"GEOGCS[""" + _name + @"""," + Datum.ToEsriString() + "," + Meridian.ToEsriString() + "," + Unit.ToEsriString() + "]");
}
public Proj4MeridianWrapper(Meridian meridian)
: base(meridian.Name ?? "Unknown", new AuthorityTag("PROJ4", meridian.Code.ToString(CultureInfo.InvariantCulture)))
{
Contract.Requires(meridian != null);
Core = meridian;
}