User Tools

Site Tools


api:dk11:net:tatukgis.ndk.tgis_viewer.locate_tpoint_integer

TGIS_Viewer.Locate(TPoint, int) method

DK11 for .NET | TatukGIS.NDK.TGIS_Viewer.Locate | Overloads | Constructors | Fields | Methods | Properties | Events

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

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

Syntax

Implements IGIS_Viewer.Locate.

// C#
public TGIS_ShapeAbstract Locate(
  TPoint _pt,
  int _prec
);
' VisualBasic
Public Function Locate(
  ByVal _pt As TPoint,
  ByVal _prec As Integer
) As TGIS_ShapeAbstract
// Oxygene
public
  function Locate(
    _pt : TPoint;
    _prec : Integer
  ) : TGIS_ShapeAbstract;

Parameters

Name Type Description
_pt TPoint 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
TGIS_ShapeAbstract Located shape or nil

Remarks

If no shape is found on a layer, the searcher takes into account labels registered by the allocator (by extent). In order to disable this behavior, _visible must be set to False.

References

2022/11/30 19:27

Page Tools