TGIS_CSProjAbstract.TGIS_CSProjAbstract() constructor

DK for .NET | TatukGIS.NDK.TGIS_CSProjAbstract.Create | Constructors | Fields | Methods | Properties

Creates an instance of the projection object with WGS84 datum and initializes projection parameters from EPSG code or WKT string.

Available also on: Delphi | Java | ActiveX | Python.

// C#
public virtual TGIS_CSProjAbstract(
  int _epsg,
  string _wkt
);

' VisualBasic
Public Overridable Sub New(
  ByVal _epsg As Integer,
  ByVal _wkt As String
)

// Oxygene
public
  constructor (
    _epsg : Integer;
    _wkt : String
  ); virtual;

PURPOSE: Initialize projection instance with standard datum (WGS84) and coordinate system definition from EPSG or WKT sources.

BEHAVIOR: Sets Datum=WGS84 by default. If _epsg is provided, loads projection parameters from EPSG database. Otherwise parses WKT string to extract projection type and parameters. Validation errors stored in Error property.

USAGE: Direct instantiation is via subclasses. Framework typically creates instances via factory: TGIS_CSFactory.Create(epsg) returns correctly typed projection.

CONSTRAINTS: WGS84 is hardcoded default; use Datum property to change. EPSG lookup requires loaded EPSG database. Invalid EPSG codes or WKT fail gracefully, setting Error property.