/// <summary> /// Checks whether the values of this instance is equal to the values of another instance. /// Only parameters used for coordinate system are used for comparison. /// Name, abbreviation, authority, alias and remarks are ignored in the comparison. /// </summary> /// <param name="obj"></param> /// <returns>True if equal</returns> public override bool EqualParams(object obj) { if (!(obj is SharpMap.CoordinateSystems.PrimeMeridian)) { return(false); } PrimeMeridian prime = obj as PrimeMeridian; return(prime.AngularUnit.EqualParams(this.AngularUnit) && prime.Longitude == this.Longitude); }
/// <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; }