/// <summary>
/// 是否相等
/// </summary>
/// <param name="obj"></param>
/// <returns>True if equal</returns>
public override bool Equals(object obj)
{
if (!(obj is ProjectedCs))
{
return(false);
}
ProjectedCs pcs = obj as ProjectedCs;
if (pcs.Dimension != this.Dimension)
{
return(false);
}
for (int i = 0; i < pcs.Dimension; i++)
{
if (pcs.Axes[i].Orientation.Direction != this.Axes[i].Orientation.Direction)
{
return(false);
}
if (!pcs.Axes[i].Unit.Equals(this.Axes[i].Unit))
{
return(false);
}
}
return(pcs.GeographicCs.Equals(this.GeographicCs) &&
pcs.HorizontalDatum.Equals(this.HorizontalDatum) &&
pcs.LinearUnit.Equals(this.LinearUnit) &&
pcs.Projection.Equals(this.Projection));
}
/// <summary>
///
/// </summary>
/// <param name="tokenizer"></param>
/// <returns></returns>
private static ProjectedCs ReadProjectedCoordinateSystem(WktStreamTokenizer tokenizer)
{
/*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");
GeographicCs geographicCS = ReadGeographicCoordinateSystem(tokenizer);
tokenizer.ReadToken(",");
Projection projection = ReadProjection(tokenizer);
Unit unit = ReadLinearUnit(tokenizer);
string authority = String.Empty;
long authorityCode = -1;
tokenizer.NextToken();
List <IAxis> axes = new List <IAxis>(2);
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
while (tokenizer.GetStringValue() == "AXIS")
{
axes.Add(ReadAxis(tokenizer));
tokenizer.NextToken();
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
}
}
if (tokenizer.GetStringValue() == ",")
{
tokenizer.NextToken();
}
if (tokenizer.GetStringValue() == "AUTHORITY")
{
tokenizer.ReadAuthority(ref authority, ref authorityCode);
tokenizer.ReadToken("]");
}
}
//This is default axis values if not specified.
if (axes.Count == 0)
{
axes.Add(new Axis("X", Direction.East));
axes.Add(new Axis("Y", Direction.North));
}
ProjectedCs projectedCS = new ProjectedCs(geographicCS.HorizontalDatum, geographicCS, unit as LinearUnit, projection, axes, name, authorityCode + "");
return(projectedCS);
}
