/// <summary> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IHorizontalDatum ReadHorizontalDatum(WktStreamTokenizer tokenizer) { Wgs84ConversionInfo info = null; string authority = string.Empty; long authorityCode = -1L; tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("SPHEROID"); IEllipsoid ellipsoid = ReadEllipsoid(tokenizer); tokenizer.NextToken(); while (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); if (tokenizer.GetStringValue() == "TOWGS84") { info = ReadWGS84ConversionInfo(tokenizer); tokenizer.NextToken(); } else if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } return(new HorizontalDatum(ellipsoid, info, DatumType.HD_Geocentric, 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> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IGeographicCoordinateSystem ReadGeographicCoordinateSystem(WktStreamTokenizer tokenizer) { tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("DATUM"); IHorizontalDatum horizontalDatum = ReadHorizontalDatum(tokenizer); tokenizer.ReadToken(","); tokenizer.ReadToken("PRIMEM"); IPrimeMeridian primeMeridian = ReadPrimeMeridian(tokenizer); tokenizer.ReadToken(","); tokenizer.ReadToken("UNIT"); IAngularUnit angularUnit = ReadAngularUnit(tokenizer); string authority = string.Empty; long authorityCode = -1L; tokenizer.NextToken(); List <AxisInfo> axisInfo = new List <AxisInfo>(2); if (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); while (tokenizer.GetStringValue() == "AXIS") { axisInfo.Add(ReadAxis(tokenizer)); tokenizer.NextToken(); } if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } if (axisInfo.Count == 0) { axisInfo.Add(new AxisInfo("Lon", AxisOrientationEnum.East)); axisInfo.Add(new AxisInfo("Lat", AxisOrientationEnum.North)); } return(new GeographicCoordinateSystem(angularUnit, horizontalDatum, primeMeridian, axisInfo, name, authority, authorityCode, string.Empty, string.Empty, string.Empty)); }
/// <summary> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IProjectedCoordinateSystem ReadProjectedCoordinateSystem(WktStreamTokenizer tokenizer) { tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("GEOGCS"); IGeographicCoordinateSystem geographicCoordinateSystem = ReadGeographicCoordinateSystem(tokenizer); tokenizer.ReadToken(","); IProjection projection = ReadProjection(tokenizer); IUnit unit = ReadLinearUnit(tokenizer); string authority = string.Empty; long authorityCode = -1L; tokenizer.NextToken(); List <AxisInfo> axisInfo = new List <AxisInfo>(2); if (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); while (tokenizer.GetStringValue() == "AXIS") { axisInfo.Add(ReadAxis(tokenizer)); tokenizer.NextToken(); } if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } if (axisInfo.Count == 0) { axisInfo.Add(new AxisInfo("X", AxisOrientationEnum.East)); axisInfo.Add(new AxisInfo("Y", AxisOrientationEnum.North)); } return(new ProjectedCoordinateSystem(geographicCoordinateSystem.HorizontalDatum, geographicCoordinateSystem, unit as LinearUnit, projection, axisInfo, name, authority, authorityCode, 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> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IProjectedCoordinateSystem ReadProjectedCoordinateSystem(WktStreamTokenizer tokenizer) { tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("GEOGCS"); IGeographicCoordinateSystem geographicCoordinateSystem = ReadGeographicCoordinateSystem(tokenizer); tokenizer.ReadToken(","); IProjection projection = ReadProjection(tokenizer); IUnit unit = ReadLinearUnit(tokenizer); string authority = string.Empty; long authorityCode = -1L; tokenizer.NextToken(); List<AxisInfo> axisInfo = new List<AxisInfo>(2); if (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); while (tokenizer.GetStringValue() == "AXIS") { axisInfo.Add(ReadAxis(tokenizer)); tokenizer.NextToken(); } if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } if (axisInfo.Count == 0) { axisInfo.Add(new AxisInfo("X", AxisOrientationEnum.East)); axisInfo.Add(new AxisInfo("Y", AxisOrientationEnum.North)); } return new ProjectedCoordinateSystem(geographicCoordinateSystem.HorizontalDatum, geographicCoordinateSystem, unit as LinearUnit, projection, axisInfo, name, authority, authorityCode, string.Empty, string.Empty, string.Empty); }
/// <summary> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IHorizontalDatum ReadHorizontalDatum(WktStreamTokenizer tokenizer) { Wgs84ConversionInfo info = null; string authority = string.Empty; long authorityCode = -1L; tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("SPHEROID"); IEllipsoid ellipsoid = ReadEllipsoid(tokenizer); tokenizer.NextToken(); while (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); if (tokenizer.GetStringValue() == "TOWGS84") { info = ReadWGS84ConversionInfo(tokenizer); tokenizer.NextToken(); } else if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } return new HorizontalDatum(ellipsoid, info, DatumType.HD_Geocentric, name, authority, authorityCode, string.Empty, string.Empty, string.Empty); }
/// <summary> /// /// </summary> /// <param name="tokenizer"></param> /// <returns></returns> private static IGeographicCoordinateSystem ReadGeographicCoordinateSystem(WktStreamTokenizer tokenizer) { tokenizer.ReadToken("["); string name = tokenizer.ReadDoubleQuotedWord(); tokenizer.ReadToken(","); tokenizer.ReadToken("DATUM"); IHorizontalDatum horizontalDatum = ReadHorizontalDatum(tokenizer); tokenizer.ReadToken(","); tokenizer.ReadToken("PRIMEM"); IPrimeMeridian primeMeridian = ReadPrimeMeridian(tokenizer); tokenizer.ReadToken(","); tokenizer.ReadToken("UNIT"); IAngularUnit angularUnit = ReadAngularUnit(tokenizer); string authority = string.Empty; long authorityCode = -1L; tokenizer.NextToken(); List<AxisInfo> axisInfo = new List<AxisInfo>(2); if (tokenizer.GetStringValue() == ",") { tokenizer.NextToken(); while (tokenizer.GetStringValue() == "AXIS") { axisInfo.Add(ReadAxis(tokenizer)); tokenizer.NextToken(); } if (tokenizer.GetStringValue() == "AUTHORITY") { tokenizer.ReadAuthority(ref authority, ref authorityCode); tokenizer.ReadToken("]"); } } if (axisInfo.Count == 0) { axisInfo.Add(new AxisInfo("Lon", AxisOrientationEnum.East)); axisInfo.Add(new AxisInfo("Lat", AxisOrientationEnum.North)); } return new GeographicCoordinateSystem(angularUnit, horizontalDatum, primeMeridian, axisInfo, name, authority, authorityCode, 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); }