User Tools

Site Tools


Table of Contents

TGIS_Shape.Distance2PartCS method

DK11 for Delphi | GisLayerVector.TGIS_Shape.Distance2PartCS | Constructors | Fields | Methods | Properties

Calculate the WGS84 distance between a point and a part in the current shape.

Available also on: .NET | Java | ActiveX.


// Delphi
  function Distance2PartCS(
    const _ptg : TGIS_Point;
    const _prec : Double;
    const _part : Integer;
    var _proj : TGIS_Point
  ) : Double; virtual; abstract;
// C++ Builder
  virtual double Distance2PartCS(
    TGIS_Point* const _ptg,
    const double _prec,
    const int _part,
    TGIS_Point* &_proj
  ) = 0;


Name Type Description
_ptg TGIS_Point reference point
_prec Double precision /not longer distance than/; point inside polygon is always not greater than _prec; if _prec less then 0 then being outside/inside polygon means the same;
_part Integer part number to which the distance will be computed
_proj TGIS_Point point projected to a nearest element of the shape


Type Description
Double Distance in meters (if CS of layers are known).
2020/05/07 01:09

Page Tools