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api:dk11:delphi:gislayervector.tgis_shape.getsnappoint_tgis_point_double_double

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TGIS_Shape.GetSnapPoint method

DK11 for Delphi | GisLayerVector.TGIS_Shape.GetSnapPoint | Constructors | Fields | Methods | Properties

Retrieving a snap point.

Available also on: .NET | Java | ActiveX.

Syntax

// Delphi
public
  function GetSnapPoint(
    const _ptg : TGIS_Point;
    const _prec : Double;
    var _dist : Double
  ) : TGIS_Point; virtual;
// C++ Builder
public:
  virtual TGIS_Point* GetSnapPoint(
    TGIS_Point* const _ptg,
    const double _prec,
    double &_dist
  );

Parameters

Name Type Description
_ptg TGIS_Point point for which we are seeking a snap point ;
_prec Double snapping precision; only points closer to _ptg then _prec can be found ;
_dist Double achieved precision

Result

Type Description
TGIS_Point Found snap point. If such point cannot be localized then same as _ptg.

Remarks

Snap point is the best point in the shape for which we can perform snapping.

2020/05/07 01:09

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