/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IProjection ReadProjection(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("PROJECTION");
tokenizer.ReadToken("[");
string className = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
tokenizer.ReadToken("PARAMETER");
List <ProjectionParameter> parameters = new List <ProjectionParameter>();
while (tokenizer.GetStringValue() == "PARAMETER")
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
parameters.Add(new ProjectionParameter(name, numericValue));
tokenizer.NextToken();
}
string authority = string.Empty;
return(new Projection(className, parameters, className, authority, -1L, string.Empty, string.Empty, string.Empty));
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IEllipsoid ReadEllipsoid(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double inverseFlattening = tokenizer.GetNumericValue();
tokenizer.NextToken();
string authority = string.Empty;
long authorityCode = -1L;
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return(new Ellipsoid(numericValue, 0, inverseFlattening, true, LinearUnit.Metre, name, authority, authorityCode, string.Empty, string.Empty, string.Empty));
}
/// <summary>
/// Returns a <see cref="T:Topology.CoordinateSystems.AngularUnit" /> given a piece of WKT.
/// </summary>
/// <param name="tokenizer">WktStreamTokenizer that has the WKT.</param>
/// <returns>An object that implements the IUnit interface.</returns>
private static IAngularUnit ReadAngularUnit(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
string authority = string.Empty;
long authorityCode = -1L;
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return new AngularUnit(numericValue, name, authority, authorityCode, string.Empty, string.Empty, string.Empty);
}
/// <summary>
/// Returns a <see cref="T:Topology.CoordinateSystems.AngularUnit" /> given a piece of WKT.
/// </summary>
/// <param name="tokenizer">WktStreamTokenizer that has the WKT.</param>
/// <returns>An object that implements the IUnit interface.</returns>
private static IAngularUnit ReadAngularUnit(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
string authority = string.Empty;
long authorityCode = -1L;
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return(new AngularUnit(numericValue, name, authority, authorityCode, string.Empty, string.Empty, string.Empty));
}
/// <summary>
/// Reads either 3, 6 or 7 parameter Bursa-Wolf values from TOWGS84 token
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static Wgs84ConversionInfo ReadWGS84ConversionInfo(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
Wgs84ConversionInfo info = new Wgs84ConversionInfo();
tokenizer.NextToken();
info.Dx = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Dy = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Dz = tokenizer.GetNumericValue();
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
info.Ex = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Ey = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Ez = tokenizer.GetNumericValue();
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
info.Ppm = tokenizer.GetNumericValue();
}
}
if (tokenizer.GetStringValue() != "]")
{
tokenizer.ReadToken("]");
}
return(info);
}
/// <summary>
/// Reads either 3, 6 or 7 parameter Bursa-Wolf values from TOWGS84 token
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static Wgs84ConversionInfo ReadWGS84ConversionInfo(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
Wgs84ConversionInfo info = new Wgs84ConversionInfo();
tokenizer.NextToken();
info.Dx = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Dy = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Dz = tokenizer.GetNumericValue();
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
info.Ex = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Ey = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
info.Ez = tokenizer.GetNumericValue();
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
info.Ppm = tokenizer.GetNumericValue();
}
}
if (tokenizer.GetStringValue() != "]")
{
tokenizer.ReadToken("]");
}
return info;
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IProjection ReadProjection(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("PROJECTION");
tokenizer.ReadToken("[");
string className = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
tokenizer.ReadToken("PARAMETER");
List<ProjectionParameter> parameters = new List<ProjectionParameter>();
while (tokenizer.GetStringValue() == "PARAMETER")
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
parameters.Add(new ProjectionParameter(name, numericValue));
tokenizer.NextToken();
}
string authority = string.Empty;
return new Projection(className, parameters, className, authority, -1L, string.Empty, string.Empty, string.Empty);
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IEllipsoid ReadEllipsoid(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double numericValue = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double inverseFlattening = tokenizer.GetNumericValue();
tokenizer.NextToken();
string authority = string.Empty;
long authorityCode = -1L;
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return new Ellipsoid(numericValue, 0, inverseFlattening, true, LinearUnit.Metre, name, authority, authorityCode, string.Empty, string.Empty, string.Empty);
}