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api:dk11:activex:tatukgis_xdk11.igis_viewer.locate_3_itpoint_integer

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IGIS_Viewer.Locate_3 method

DK11 for ActiveX | TatukGIS_XDK11.IGIS_Viewer.Locate_3 | Methods | Properties

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

Available also on: Delphi | .NET | Java.

Syntax

// C#
public ITGIS_ShapeAbstract Locate_3(
  ITPoint _pt,
  int _prec
);
' VisualBasic
Public Function Locate_3(
  ByVal _pt As ITPoint,
  ByVal _prec As Integer
) As ITGIS_ShapeAbstract
// Oxygene
public
  function Locate_3(
    _pt : ITPoint;
    _prec : Integer
  ) : ITGIS_ShapeAbstract;

Parameters

Name Type Description
_pt ITPoint reference point /searching point/ in pixels
_prec int
Integer
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 pixels

Result

Type Description
ITGIS_ShapeAbstract Located shape or nil

Remarks

If locate is called upon active paint operations then result could be null. But Locate and paint process are using the same vector enumerator context.

It is recommended to check InPaint property before calling this Locate.

2020/05/07 01:03

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