internal static GeographicCoordinateSystem ReadGeographicCoordinateSystem(WktStreamTokenizer tokenizer, bool includeAuthority)
{
//GEOGCS["OSGB 1936",
//DATUM["OSGB 1936",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6277"]]
//PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]]
//UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]]
//AXIS["Geodetic latitude","NORTH"]
//AXIS["Geodetic longitude","EAST"]
//AUTHORITY["EPSG","4277"]
//]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.ReadToken("DATUM");
HorizontalDatum horizontalDatum = ReadHorizontalDatum(tokenizer, includeAuthority);
tokenizer.ReadToken(",");
tokenizer.ReadToken("PRIMEM");
PrimeMeridian primeMeridian = ReadPrimeMeridian(tokenizer, includeAuthority);
tokenizer.ReadToken(",");
tokenizer.ReadToken("UNIT");
Unit angularUnit = ReadUnit(tokenizer, includeAuthority);
AxisInfo axisInfo1 = null, axisInfo2 = null;
if (tokenizer.TryReadToken(","))
{
if (tokenizer.TryReadToken("AXIS"))
{
axisInfo1 = ReadAxisInfo(tokenizer);
}
if (tokenizer.TryReadToken(","))
{
if (tokenizer.TryReadToken("AXIS"))
{
axisInfo2 = ReadAxisInfo(tokenizer);
}
}
}
string authority = String.Empty;
string authorityCode = String.Empty;
if (includeAuthority)
{
tokenizer.ReadToken(",");
tokenizer.ReadAuthority(ref authority, ref authorityCode);
}
tokenizer.ReadToken("]");
GeographicCoordinateSystem geographicCS = new GeographicCoordinateSystem(angularUnit as AngularUnit, horizontalDatum,
primeMeridian, axisInfo1, axisInfo2, String.Empty, authority, authorityCode, name, String.Empty, String.Empty);
return(geographicCS);
}
internal GeographicCoordinateSystem(string name,
AngularUnit angularUnit,
HorizontalDatum horizontalDatum,
PrimeMeridian primeMeridian,
AxisInfo axis0,
AxisInfo axis1)
:
this(angularUnit, horizontalDatum, primeMeridian, axis0, axis1, String.Empty, String.Empty, String.Empty, name, String.Empty, String.Empty)
{
}
private static void WriteAxis(AxisInfo axis, bool esri, IndentedTextWriter writer)
{
if (esri)
{
return;
}
if (axis == null)
{
return;
}
string axisOrientation = String.Empty;
switch (axis.Orientation)
{
case AxisOrientation.Down:
axisOrientation = "DOWN";
break;
case AxisOrientation.East:
axisOrientation = "EAST";
break;
case AxisOrientation.North:
axisOrientation = "NORTH";
break;
case AxisOrientation.Other:
axisOrientation = "OTHER";
break;
case AxisOrientation.South:
axisOrientation = "SOUTH";
break;
case AxisOrientation.Up:
axisOrientation = "UP";
break;
case AxisOrientation.West:
axisOrientation = "WEST";
break;
default:
throw new InvalidOperationException("This should not exist");
}
writer.WriteLine(String.Format("AXIS[\"{0}\",\"{1}\"]", axis.Name, axisOrientation));
}
private static AxisInfo ReadAxisInfo(WktStreamTokenizer tokenizer)
{
//AXIS["Geodetic longitude","EAST"]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
string orientationString = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken("]");
AxisOrientation orientation = (AxisOrientation)Enum.Parse(typeof(AxisOrientation), orientationString, true);
AxisInfo axis = new AxisInfo(name, orientation);
return(axis);
}
internal GeographicCoordinateSystem(
AngularUnit angularUnit,
HorizontalDatum horizontalDatum,
PrimeMeridian primeMeridian,
AxisInfo axis0,
AxisInfo axis1,
string remarks, string authority, string authorityCode, string name, string alias, string abbreviation)
: base(remarks, authority, authorityCode, name, alias, abbreviation)
{
_angularUnit = angularUnit;
_horizontalDatum = horizontalDatum;
_primeMeridian = primeMeridian;
_axisInfo = new AxisInfo[] { axis0, axis1 };
// define the envelope.
_defaultEnvelope = new Envelope(-180, -90, 180, 90);
}
public VerticalCoordinateSystem(string name,
VerticalDatum verticaldatum,
AxisInfo axisinfo,
LinearUnit linearUnit,
string remarks, string authority, string authorityCode, string alias, string abbreviation)
: base(remarks, authority, authorityCode, name, alias, abbreviation)
{
if (verticaldatum == null)
{
throw new ArgumentNullException("verticaldatum");
}
_verticaldatum = verticaldatum;
_axisinfo = new AxisInfo[1] {
axisinfo
};
_units = linearUnit;
}
internal VerticalCoordinateSystem(string name, VerticalDatum verticaldatum, AxisInfo axisinfo, LinearUnit units)
: base(name, String.Empty, String.Empty, String.Empty, String.Empty, String.Empty)
{
if (verticaldatum == null)
{
throw new ArgumentNullException("verticaldatum");
}
if (units == null)
{
throw new ArgumentNullException("units");
}
_name = name;
_verticaldatum = verticaldatum;
_axisinfo = new AxisInfo[1] {
axisinfo
};
_units = units;
}
private static void Write(object obj, bool esri, IndentedTextWriter writer)
{
if (obj is CoordinateSystem)
{
WriteCoordinateSystem(obj as CoordinateSystem, esri, writer);
}
else if (obj is Datum)
{
WriteDatum(obj as Datum, esri, writer);
}
else if (obj is Ellipsoid)
{
WriteEllipsoid(obj as Ellipsoid, esri, writer);
}
else if (obj is AxisInfo)
{
AxisInfo info = (AxisInfo)obj;
WriteAxis(info, esri, writer);
}
else if (obj is WGS84ConversionInfo)
{
WGS84ConversionInfo info = (WGS84ConversionInfo)obj;
WriteWGS84ConversionInfo(info, esri, writer);
}
else if (obj is Unit)
{
WriteUnit(obj as Unit, esri, writer);
}
else if (obj is PrimeMeridian)
{
WritePrimeMeridian(obj as PrimeMeridian, esri, writer);
}
else
{
throw new NotImplementedException(String.Format("Cannot convert {0} to WKT.", obj.GetType().FullName));
}
}
private static ProjectedCoordinateSystem ReadProjectedCoordinateSystem(WktStreamTokenizer tokenizer, bool includeAuthority)
{
//PROJCS[
// "OSGB 1936 / British National Grid",
// GEOGCS[
// "OSGB 1936",
// DATUM[...]
// PRIMEM[...]
// AXIS["Geodetic latitude",NORTH]
// AXIS["Geodetic longitude",EAST]
// AUTHORITY["EPSG","4277"]
// ],
// PROJECTION["Transverse Mercator"],
// PARAMETER["latitude_of_natural_origin",49],
// PARAMETER["longitude_of_natural_origin",-2],
// PARAMETER["scale_factor_at_natural_origin",0.999601272],
// PARAMETER["false_easting",400000],
// PARAMETER["false_northing",-100000],
// AXIS["Easting",EAST],
// AXIS["Northing",NORTH],
// AUTHORITY["EPSG","27700"]
//]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.ReadToken("GEOGCS");
GeographicCoordinateSystem geographicCS = ReadGeographicCoordinateSystem(tokenizer, includeAuthority);
tokenizer.ReadToken(",");
Projection projection = ReadProjection(tokenizer, includeAuthority);
tokenizer.ReadToken("UNIT");
Unit unit = ReadUnit(tokenizer, includeAuthority);
AxisInfo axisInfo1 = null, axisInfo2 = null;
if (tokenizer.TryReadToken(","))
{
if (tokenizer.TryReadToken("AXIS"))
{
axisInfo1 = ReadAxisInfo(tokenizer);
}
if (tokenizer.TryReadToken(","))
{
if (tokenizer.TryReadToken("AXIS"))
{
axisInfo2 = ReadAxisInfo(tokenizer);
}
}
}
string authority = String.Empty;
string authorityCode = String.Empty;
if (includeAuthority)
{
tokenizer.ReadToken(",");
tokenizer.ReadAuthority(ref authority, ref authorityCode);
}
tokenizer.ReadToken("]");
int axisInfoDim = 0;
if (axisInfo1 != null)
{
axisInfoDim = 1;
}
if (axisInfo2 != null)
{
axisInfoDim = 2;
}
AxisInfo[] axisArray = new AxisInfo[axisInfoDim];
if (axisInfo1 != null)
{
axisArray[0] = axisInfo1;
}
if (axisInfo2 != null)
{
axisArray[1] = axisInfo2;
}
ProjectedCoordinateSystem projectedCS = new ProjectedCoordinateSystem(geographicCS.HorizontalDatum, axisArray, geographicCS, unit as LinearUnit, projection, String.Empty, authority, authorityCode, name, String.Empty, String.Empty);
return(projectedCS);
}