Base class for spline interpolation. More...

#include <qwt_spline.h>

Inheritance diagram for QwtSplineInterpolating:

Public Member Functions
	QwtSplineInterpolating ()
	Constructor .

virtual	~QwtSplineInterpolating ()
	Destructor .

virtual QPolygonF	equidistantPolygon (const QPolygonF &, double distance, bool withNodes) const
	Find an interpolated polygon with "equidistant" points.

virtual QPolygonF	polygon (const QPolygonF &, double tolerance) const override
	Interpolate a curve by a polygon.

virtual QPainterPath	painterPath (const QPolygonF &) const override
	Interpolate a curve with Bezier curves.

virtual QVector< QLineF >	bezierControlLines (const QPolygonF &) const =0
	Interpolate a curve with Bezier curves.

Public Member Functions inherited from QwtSpline
	QwtSpline ()
	Constructor.

virtual	~QwtSpline ()
	Destructor.

void	setParametrization (int type)
	Set parametrization by type.

void	setParametrization (QwtSplineParametrization *)
	Set parametrization object.

const QwtSplineParametrization *	parametrization () const
	Get parametrization.

void	setBoundaryType (BoundaryType)
	Set boundary type.

BoundaryType	boundaryType () const
	Get boundary type.

void	setBoundaryValue (BoundaryPosition, double value)
	Set boundary value.

double	boundaryValue (BoundaryPosition) const
	Get boundary value.

void	setBoundaryCondition (BoundaryPosition, int condition)
	Set boundary condition.

int	boundaryCondition (BoundaryPosition) const
	Get boundary condition.

void	setBoundaryConditions (int condition, double valueBegin=0.0, double valueEnd=0.0)
	Set boundary conditions for both ends.

virtual uint	locality () const
	Get locality (number of points used for calculation)

Additional Inherited Members
Public Types inherited from QwtSpline
enum	BoundaryType { ConditionalBoundaries , PeriodicPolygon , ClosedPolygon }
	Boundary type specifying the spline at its endpoints. More...

enum	BoundaryPosition { AtBeginning , AtEnd }
	position of a boundary condition More...

enum	BoundaryCondition { Clamped1 , Clamped2 , Clamped3 , LinearRunout }
	Boundary condition. More...

Detailed Description

Base class for spline interpolation.

Constructor & Destructor Documentation

◆ QwtSplineInterpolating()

QwtSplineInterpolating::QwtSplineInterpolating ( )

Constructor .

◆ ~QwtSplineInterpolating()

QwtSplineInterpolating::~QwtSplineInterpolating ( )

virtual

Destructor .

Member Function Documentation

◆ bezierControlLines()

QVector< QLineF > QwtSplineInterpolating::bezierControlLines ( const QPolygonF & points ) const

pure virtual

Interpolate a curve with Bezier curves.

Interpolates a polygon piecewise with cubic Bezier curves and returns the 2 control points of each curve as QLineF.

Parameters

points Control points

Returns: Control points of the interpolating Bezier curves

Implemented in QwtSplineC1, QwtSplineC2, QwtSplineLocal, QwtSplinePleasing, and QwtSplineCubic.

◆ equidistantPolygon()

QPolygonF QwtSplineInterpolating::equidistantPolygon	(	const QPolygonF &	points,
		double	distance,
		bool	withNodes
	)		const

virtual

Find an interpolated polygon with "equidistant" points.

Reimplemented in QwtSplineC1, and QwtSplineC2.

◆ painterPath()

QPainterPath QwtSplineInterpolating::painterPath ( const QPolygonF & points ) const

overridevirtual

Interpolate a curve with Bezier curves.

Implements QwtSpline.

Reimplemented in QwtSplineC1, QwtSplineC2, QwtSplineCubic, QwtSplineLocal, and QwtSplinePleasing.

◆ polygon()

QPolygonF QwtSplineInterpolating::polygon	(	const QPolygonF &	points,
		double	tolerance
	)		const

overridevirtual

Interpolate a curve by a polygon.

Reimplemented from QwtSpline.

The documentation for this class was generated from the following files:

/home/runner/work/QWT/QWT/src/plot/qwt_spline.h
/home/runner/work/QWT/QWT/src/plot/qwt_spline.cpp

Public Member Functions

Additional Inherited Members