api:dk11:net:tatukgis.ndk.winforms.tgis_viewerwnd.locateex_tgis_point_double_boolean
Table of Contents
TGIS_ViewerWnd.LocateEx method
DK11 for .NET | TatukGIS.NDK.WinForms.TGIS_ViewerWnd.LocateEx | Constructors | Fields | Methods | Properties | Events
Locate shapes on layers that are near _ptg, but closer than _prec distance. Still only the best one candidate is chosen from each layer.
Available also on: Delphi FMX | Java | ActiveX.
Syntax
Implements IGIS_Viewer.LocateEx.
// C# public TObjectList<TGIS_ShapeAbstract> LocateEx( TGIS_Point _ptg, double _prec, bool _visible );
' VisualBasic Public Function LocateEx( ByVal _ptg As TGIS_Point, ByVal _prec As Double, ByVal _visible As Boolean ) As TObjectList(Of TGIS_ShapeAbstract>
// Oxygene public function LocateEx( _ptg : TGIS_Point; _prec : Double; _visible : Boolean ) : TGIS_ShapeAbstractList;
Parameters
| Name | Type | Description |
|---|---|---|
| _ptg | TGIS_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 |
| _visible | bool Boolean | if true the only visible shapes will be evaluated; shapes turned of by query of hidden will be ignored |
Result
| Type | Description |
|---|---|
| TObjectList<TGIS_ShapeAbstract> TGIS_ShapeAbstractList |
Remarks
returned list should be freed by a calling application.
2020/05/22 01:17