Locate a shape (more precise).
// Delphi public function LocateEx( const _ptg : TGIS_Point; const _prec : Double; const _uid : TGIS_Uid; var _dist : Double; var _part : Integer; var _proj : TGIS_Point ) : TGIS_Shape; overload; virtual;
// C++ Builder public: virtual TGIS_Shape* LocateEx( TGIS_Point* const _ptg, const double _prec, TGIS_Uid* const _uid, double &_dist, int &_part, TGIS_Point* &_proj ) /* overload */;
|_ptg||TGIS_Point||reference point /searching point/ if the layer has been attached to the Viewer then expected _ptg units are in a Viewer coordinate space; otherwise expected _ptg units are in a Layer coordinate space|
|_prec||Double||precision /not a longer distance than/; point inside a polygon is always not greater than _dist; if _prec is less then 0, then being outside/inside polygon means the same _prec units are calculated same way as _ptg|
|_uid||TGIS_Uid||Uid of reference shape or -1; thanks to this, is possible to find nearest shape, excluding shape given by _uid.|
|_dist||Double||reached distance between _pt and shape in Result; 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 _dist units are calculated same way as _ptg|
|_part||Integer||number of the part closest to a given point|
|_proj||TGIS_Point||point projected to the nearest element of a shape|
|TGIS_Shape||Found shape or nil.|
Use this method to locate a shape that is near _ptg but also on _prec distance. It finds a shape using FindFirst method in extent corrected by _prec and _ptg params.
See Locate for example.