private static CoordinateSystem ReadCoordinateSystem(string coordinateSystem, WktStreamTokenizer tokenizer, bool includeAuthority)
{
CoordinateSystem returnCS = null;
switch (coordinateSystem)
{
case "VERT_CS":
VerticalCoordinateSystem verticalCS = ReadVerticalCoordinateSystem(tokenizer, includeAuthority);
returnCS = verticalCS;
break;
case "GEOGCS":
GeographicCoordinateSystem geographicCS = ReadGeographicCoordinateSystem(tokenizer, includeAuthority);
returnCS = geographicCS;
break;
case "PROJCS":
ProjectedCoordinateSystem projectedCS = ReadProjectedCoordinateSystem(tokenizer, includeAuthority);
returnCS = projectedCS;
break;
case "COMPD_CS":
CompoundCoordinateSystem compoundCS = ReadCompoundCoordinateSystem(tokenizer, includeAuthority);
returnCS = compoundCS;
break;
case "GEOCCS":
case "FITTED_CS":
case "LOCAL_CS":
throw new InvalidOperationException(String.Format("{0} coordinate system is not recongized.", coordinateSystem));
}
return(returnCS);
}
private static VerticalCoordinateSystem ReadVerticalCoordinateSystem(WktStreamTokenizer tokenizer, bool includeAuthority)
{
//VERT_CS["Newlyn",
//VERT_DATUM["Ordnance Datum Newlyn",2005,AUTHORITY["EPSG","5101"]]
//UNIT["metre",1,AUTHORITY["EPSG","9001"]]
//AUTHORITY["EPSG","5701"]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.ReadToken("VERT_DATUM");
VerticalDatum verticalDatum = ReadVerticalDatum(tokenizer, includeAuthority);
tokenizer.ReadToken("UNIT");
Unit unit = ReadUnit(tokenizer, includeAuthority);
string authority = String.Empty;
string authorityCode = String.Empty;
if (includeAuthority)
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
}
tokenizer.ReadToken("]");
VerticalCoordinateSystem verticalCS = new VerticalCoordinateSystem(name, verticalDatum, String.Empty, authority, authorityCode, String.Empty, String.Empty);
return(verticalCS);
}
private static void WriteVerticalCoordinateSystem(VerticalCoordinateSystem verticalCoordinateSystem, bool esri, IndentedTextWriter writer)
{
writer.WriteLine("VERT_CS[");
writer.Indent = writer.Indent + 1;
writer.WriteLine(String.Format("\"{0}\",", verticalCoordinateSystem.Name));
WriteDatum(verticalCoordinateSystem.VerticalDatum, esri, writer);
WriteUnit(verticalCoordinateSystem.VerticalUnit, esri, writer);
//writer.WriteLine(String.Format("AUTHORITY[\"{0}\",\"{1}\"]", verticalCoordinateSystem.Authority, verticalCoordinateSystem.AuthorityCode));
WriteAuthority(verticalCoordinateSystem, esri, writer);
writer.Indent = writer.Indent - 1;
writer.WriteLine("]");
}
public static object Create(string wkt)
{
object returnObject = null;
bool includeAuthority = (wkt.ToLower().IndexOf("authority") != -1);
StringReader reader = new StringReader(wkt);
WktStreamTokenizer tokenizer = new WktStreamTokenizer(reader);
tokenizer.NextToken();
string objectName = tokenizer.GetStringValue();
switch (objectName)
{
case "UNIT":
Unit unit = ReadUnit(tokenizer, includeAuthority);
returnObject = unit;
break;
case "VERT_DATUM":
VerticalDatum verticalDatum = ReadVerticalDatum(tokenizer, includeAuthority);
returnObject = verticalDatum;
break;
case "SPHEROID":
Ellipsoid ellipsoid = ReadEllipsoid(tokenizer, includeAuthority);
returnObject = ellipsoid;
break;
case "TOWGS84":
WGS84ConversionInfo wgsInfo = ReadWGS84ConversionInfo(tokenizer, includeAuthority);
returnObject = wgsInfo;
break;
case "DATUM":
HorizontalDatum horizontalDatum = ReadHorizontalDatum(tokenizer, includeAuthority);
returnObject = horizontalDatum;
break;
case "PRIMEM":
PrimeMeridian primeMeridian = ReadPrimeMeridian(tokenizer, includeAuthority);
returnObject = primeMeridian;
break;
case "VERT_CS":
VerticalCoordinateSystem verticalCS = ReadVerticalCoordinateSystem(tokenizer, includeAuthority);
returnObject = verticalCS;
break;
case "GEOGCS":
GeographicCoordinateSystem geographicCS = ReadGeographicCoordinateSystem(tokenizer, includeAuthority);
returnObject = geographicCS;
break;
case "PROJCS":
ProjectedCoordinateSystem projectedCS = ReadProjectedCoordinateSystem(tokenizer, includeAuthority);
returnObject = projectedCS;
break;
case "COMPD_CS":
CompoundCoordinateSystem compoundCS = ReadCompoundCoordinateSystem(tokenizer, includeAuthority);
returnObject = compoundCS;
break;
case "GEOCCS":
case "FITTED_CS":
case "LOCAL_CS":
throw new NotSupportedException(String.Format("{0} is not implemented.", objectName));
default:
throw new ParseException(String.Format("'{0'} is not recongnized.", objectName));
}
reader.Close();
return(returnObject);
}
