public bool IsSame(Spheroid sp)
{
return(sp != null && (
(Math.Abs(SemiminorAxis - sp.SemiminorAxis) < MINI_DOUBLE &&
Math.Abs(SemimajorAxis - sp.SemimajorAxis) < MINI_DOUBLE) ||
(Math.Abs(SemimajorAxis - sp.SemimajorAxis) < MINI_DOUBLE &&
Math.Abs(InverseFlattening - sp.InverseFlattening) < MINI_DOUBLE)));
}
public object Clone()
{
Spheroid sp = new Spheroid();
sp.InverseFlattening = this.InverseFlattening;
sp.Name = this.Name;
sp.SemimajorAxis = this.SemimajorAxis;
sp.SemiminorAxis = this.SemiminorAxis;
return(sp);
}
public object Clone()
{
Spheroid sp = null;
if (this.Spheroid != null)
{
sp = this.Spheroid.Clone() as Spheroid;
}
return(new Datum(this.Name, sp));
}
private Datum GetDatum(string name, Dictionary <string, string> nameValuePairs)
{
Spheroid spheroid = null;
if (nameValuePairs.ContainsKey("a") && nameValuePairs.ContainsKey("b") && nameValuePairs.ContainsKey("f"))
{
spheroid = new Spheroid();
spheroid.SemimajorAxis = double.Parse(nameValuePairs["a"]);
spheroid.SemiminorAxis = double.Parse(nameValuePairs["b"]);
spheroid.InverseFlattening = 1 / double.Parse(nameValuePairs["f"]);
}
else
{
spheroid = GetSheroidByDatum(name);
}
return(new Datum(name, spheroid));
}
public Datum(string name, Spheroid spheroid)
{
Name = name;
Spheroid = spheroid;
}
//DATUM["D_WGS_1984",
// SPHEROID["WGS_1984",6378137.0,298.257223563]
// ]
public Datum(WktItem wktItem)
{
Spheroid = new Spheroid(wktItem.GetWktItem("SPHEROID"));
Name = (wktItem.Value.Split(',')[0]).Replace("\"", string.Empty);
}
