qwt_spline_cubic.h

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/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#ifndef QWT_SPLINE_CUBIC_H
#define QWT_SPLINE_CUBIC_H

#include "qwt_global.h"
#include "qwt_spline.h"

class QWT_EXPORT QwtSplineCubic : public QwtSplineC2
{
  public:
    QwtSplineCubic();
    virtual ~QwtSplineCubic();

    virtual uint locality() const QWT_OVERRIDE;

    virtual QPainterPath painterPath( const QPolygonF& ) const QWT_OVERRIDE;
    virtual QVector< QLineF > bezierControlLines( const QPolygonF& points ) const QWT_OVERRIDE;

    // calculating the parametric equations
    virtual QVector< QwtSplinePolynomial > polynomials( const QPolygonF& ) const QWT_OVERRIDE;
    virtual QVector< double > slopes( const QPolygonF& ) const QWT_OVERRIDE;
    virtual QVector< double > curvatures( const QPolygonF& ) const QWT_OVERRIDE;

  private:
    class PrivateData;
    PrivateData* m_data;
};

#endif