DK11 for Delphi | GisInterfaces.IGIS_Viewer.LocateEx | Methods | Properties
Locate shapes on layers that are near _ptg, but closer than _prec distance. Still only the best one candidate is chosen from each layer.
// Delphi public function LocateEx( const _ptg : TGIS_Point; const _prec : Double; const _visible : Boolean ) : TGIS_ShapeAbstractList;
// C++ Builder public: TGIS_ShapeAbstractList* LocateEx( TGIS_Point* const _ptg, const double _prec, const bool _visible ) = 0;
Name | Type | Description |
---|---|---|
_ptg | TGIS_Point | reference point /searching point/ |
_prec | 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 | Boolean | if true the only visible shapes will be evaluated; shapes turned of by query of hidden will be ignored |
Type | Description |
---|---|
TGIS_ShapeAbstractList | Allocated list of shapes from all viewer layers |