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api:dk11:activex:tatukgis_xdk11.itgis_viewerwnd.locate_itgis_point_double

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ITGIS_ViewerWnd.Locate method

DK11 for ActiveX | TatukGIS_XDK11.ITGIS_ViewerWnd.Locate | Methods | Properties

Locate a shape that is near _ptg, but is closer than _prec distance.

Available also on: Delphi FMX | .NET WinForms | Java.

Syntax

// C#
public ITGIS_ShapeAbstract Locate(
  ITGIS_Point _ptg,
  double _prec
);
' VisualBasic
Public Function Locate(
  ByVal _ptg As ITGIS_Point,
  ByVal _prec As Double
) As ITGIS_ShapeAbstract
// Oxygene
public
  function Locate(
    _ptg : ITGIS_Point;
    _prec : Double
  ) : ITGIS_ShapeAbstract;

Parameters

Name Type Description
_ptg ITGIS_Point reference point /searching point/
_prec double
Double
precision /not a longer distance than/; for points inside the polygon (if _prec >= 0) the distance will be multiply by 0.95 (to prefer points inside the polygon) but will not be bigger then _prec; for point distance will be multiplied by 0.9 to prefer points over lines and polygons; precision is express in map units

Result

Type Description
ITGIS_ShapeAbstract Located shape or nil

Remarks

To improve performance sections visibility can be used to choose layer to call its Locate method.

2020/05/22 01:05