/*
* /// <summary>
* ///
* /// </summary>
* /// <param name="tokenizer"></param>
* /// <returns></returns>
* private static ICompoundCoordinateSystem ReadCompoundCoordinateSystem(WktStreamTokenizer tokenizer)
* {
*
* //COMPD_CS[
* //"OSGB36 / British National Grid + ODN",
* //PROJCS[]
* //VERT_CS[]
* //AUTHORITY["EPSG","7405"]
* //]
*
* tokenizer.ReadToken("[");
* string name=tokenizer.ReadDoubleQuotedWord();
* tokenizer.ReadToken(",");
* tokenizer.NextToken();
* string headCSCode = tokenizer.GetStringValue();
* ICoordinateSystem headCS = ReadCoordinateSystem(headCSCode,tokenizer);
* tokenizer.ReadToken(",");
* tokenizer.NextToken();
* string tailCSCode = tokenizer.GetStringValue();
* ICoordinateSystem tailCS = ReadCoordinateSystem(tailCSCode,tokenizer);
* tokenizer.ReadToken(",");
* string authority=String.Empty;
* string authorityCode=String.Empty;
* tokenizer.ReadAuthority(ref authority, ref authorityCode);
* tokenizer.ReadToken("]");
* ICompoundCoordinateSystem compoundCS = new CompoundCoordinateSystem(headCS,tailCS,String.Empty,authority,authorityCode,name,String.Empty,String.Empty);
* return compoundCS;
*
* }*/
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IEllipsoid ReadEllipsoid(WktStreamTokenizer tokenizer)
{
//SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double majorAxis = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double e = tokenizer.GetNumericValue();
//
//tokenizer.ReadToken(",");
tokenizer.NextToken();
string authority = String.Empty;
long authorityCode = -1;
if (tokenizer.GetStringValue() == ",") //Read authority
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
IEllipsoid ellipsoid = new Ellipsoid(majorAxis, 0.0, e, true, LinearUnit.Metre, name, authority, authorityCode, String.Empty, string.Empty, string.Empty);
return(ellipsoid);
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IProjection ReadProjection(WktStreamTokenizer tokenizer)
{
//tokenizer.NextToken();// PROJECTION
tokenizer.ReadToken("PROJECTION");
tokenizer.ReadToken("["); //[
string projectionName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken("]"); //]
tokenizer.ReadToken(","); //,
tokenizer.ReadToken("PARAMETER");
List <ProjectionParameter> paramList = new List <ProjectionParameter>();
while (tokenizer.GetStringValue() == "PARAMETER")
{
tokenizer.ReadToken("[");
string paramName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double paramValue = tokenizer.GetNumericValue();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
paramList.Add(new ProjectionParameter(paramName, paramValue));
tokenizer.NextToken();
}
string authority = String.Empty;
long authorityCode = -1;
IProjection projection = new Projection(projectionName, paramList, projectionName, authority, authorityCode, String.Empty, String.Empty, string.Empty);
return(projection);
}
/// <summary>
/// Returns a <see cref="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 unitName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double unitsPerUnit = tokenizer.GetNumericValue();
string authority = String.Empty;
long authorityCode = -1;
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return(new AngularUnit(unitsPerUnit, unitName, 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)
{
//TOWGS84[0,0,0,0,0,0,0]
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 IPrimeMeridian ReadPrimeMeridian(WktStreamTokenizer tokenizer)
{
//PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double longitude = tokenizer.GetNumericValue();
tokenizer.NextToken();
string authority = String.Empty;
long authorityCode = -1;
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
// make an assumption about the Angular units - degrees.
IPrimeMeridian primeMeridian = new PrimeMeridian(longitude, AngularUnit.Degrees, name, authority, authorityCode, String.Empty, String.Empty, String.Empty);
return(primeMeridian);
}
/// <summary>
/// Returns the next number in the stream.
/// </summary>
/// <param name="tokenizer">Tokenizer over a stream of text in Well-known text format. The next token
/// must be a number.</param>
/// <returns>Returns the next number in the stream.</returns>
/// <remarks>
/// ParseException is thrown if the next token is not a number.
/// </remarks>
private static double GetNextNumber(WktStreamTokenizer tokenizer)
{
tokenizer.NextToken();
return tokenizer.GetNumericValue();
}
/// <summary>
/// Returns the next number in the stream.
/// </summary>
/// <param name="tokenizer">Tokenizer over a stream of text in Well-known text format. The next token
/// must be a number.</param>
/// <returns>Returns the next number in the stream.</returns>
/// <remarks>
/// ParseException is thrown if the next token is not a number.
/// </remarks>
private static double GetNextNumber(WktStreamTokenizer tokenizer)
{
tokenizer.NextToken();
return(tokenizer.GetNumericValue());
}
/// <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)
{
//TOWGS84[0,0,0,0,0,0,0]
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>
/// Returns a IUnit 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 IUnit ReadUnit(WktStreamTokenizer tokenizer)
{
tokenizer.ReadToken("[");
string unitName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double unitsPerUnit = tokenizer.GetNumericValue();
string authority = String.Empty;
long authorityCode = -1;
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
return new Unit(unitsPerUnit, unitName, authority, authorityCode, String.Empty, String.Empty, String.Empty);
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IProjection ReadProjection(WktStreamTokenizer tokenizer)
{
//tokenizer.NextToken();// PROJECTION
tokenizer.ReadToken("PROJECTION");
tokenizer.ReadToken("[");//[
string projectionName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken("]");//]
tokenizer.ReadToken(",");//,
tokenizer.ReadToken("PARAMETER");
List<ProjectionParameter> paramList = new List<ProjectionParameter>();
while (tokenizer.GetStringValue() == "PARAMETER")
{
tokenizer.ReadToken("[");
string paramName = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double paramValue = tokenizer.GetNumericValue();
tokenizer.ReadToken("]");
tokenizer.ReadToken(",");
paramList.Add(new ProjectionParameter(paramName, paramValue));
tokenizer.NextToken();
}
string authority = String.Empty;
long authorityCode = -1;
IProjection projection = new Projection(projectionName, paramList, projectionName, authority, authorityCode, String.Empty, String.Empty, string.Empty);
return projection;
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IPrimeMeridian ReadPrimeMeridian(WktStreamTokenizer tokenizer)
{
//PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double longitude = tokenizer.GetNumericValue();
tokenizer.NextToken();
string authority = String.Empty;
long authorityCode = -1;
if (tokenizer.GetStringValue() == ",")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
// make an assumption about the Angular units - degrees.
IPrimeMeridian primeMeridian = new PrimeMeridian(longitude, AngularUnit.Degrees, name, authority, authorityCode, String.Empty, String.Empty, String.Empty);
return primeMeridian;
}
/*
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static ICompoundCoordinateSystem ReadCompoundCoordinateSystem(WktStreamTokenizer tokenizer)
{
//COMPD_CS[
//"OSGB36 / British National Grid + ODN",
//PROJCS[]
//VERT_CS[]
//AUTHORITY["EPSG","7405"]
//]
tokenizer.ReadToken("[");
string name=tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
string headCSCode = tokenizer.GetStringValue();
ICoordinateSystem headCS = ReadCoordinateSystem(headCSCode,tokenizer);
tokenizer.ReadToken(",");
tokenizer.NextToken();
string tailCSCode = tokenizer.GetStringValue();
ICoordinateSystem tailCS = ReadCoordinateSystem(tailCSCode,tokenizer);
tokenizer.ReadToken(",");
string authority=String.Empty;
string authorityCode=String.Empty;
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
ICompoundCoordinateSystem compoundCS = new CompoundCoordinateSystem(headCS,tailCS,String.Empty,authority,authorityCode,name,String.Empty,String.Empty);
return compoundCS;
}*/
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static IEllipsoid ReadEllipsoid(WktStreamTokenizer tokenizer)
{
//SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]]
tokenizer.ReadToken("[");
string name = tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double majorAxis = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double e = tokenizer.GetNumericValue();
//
//tokenizer.ReadToken(",");
tokenizer.NextToken();
string authority = String.Empty;
long authorityCode = -1;
if (tokenizer.GetStringValue() == ",") //Read authority
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
IEllipsoid ellipsoid = new Ellipsoid(majorAxis, 0.0, e, true, LinearUnit.Metre, name, authority, authorityCode, String.Empty, string.Empty, string.Empty);
return ellipsoid;
}
