Public Types¶

enum Mode { Polygon, Path }
Preferred mode of the fitting algorithm.

Public Member Functions¶

virtual ~QwtCurveFitter ()
Destructor. Mode mode () const
virtual QPolygonF fitCurve (const QPolygonF &polygon) const =0
virtual QPainterPath fitCurvePath (const QPolygonF &polygon) const =0

Protected Member Functions¶

QwtCurveFitter (Mode mode)

enum QwtCurveFitter::Mode¶

Preferred mode of the fitting algorithm. Even if a QPainterPath can always be created from a QPolygonF the overhead of the conversion can be avoided by indicating the preference of the implementation to the application code.

Enumerator

Polygon

The fitting algorithm creates a polygon - the implementation of fitCurvePath() simply wraps the polygon into a path.

See also

Path

The fitting algorithm creates a painter path - the implementation of fitCurve() extracts a polygon from the path.

See also

Definition at line 32 of file qwt_curve_fitter.h.

QwtCurveFitter::QwtCurveFitter (Mode mode) [explicit], [protected]¶

Constructor

Parameters

Definition at line 16 of file qwt_curve_fitter.cpp.

virtual QPolygonF QwtCurveFitter::fitCurve (const QPolygonF & polygon) const [pure virtual]¶

Find a curve which has the best fit to a series of data points

Parameters

Returns

See also

Implemented in QwtWeedingCurveFitter, QwtSplineCurveFitter, and QwtPolarFitter.

virtual QPainterPath QwtCurveFitter::fitCurvePath (const QPolygonF & polygon) const [pure virtual]¶

Find a curve path which has the best fit to a series of data points

Parameters

Returns

See also

Implemented in QwtWeedingCurveFitter, QwtSplineCurveFitter, and QwtPolarFitter.

QwtCurveFitter::Mode QwtCurveFitter::mode () const¶

Returns

Definition at line 27 of file qwt_curve_fitter.cpp.