qwt_spline_approximation.h

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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * 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_APPROXIMATION_H
#define QWT_SPLINE_APPROXIMATION_H 1

#include "qwt_global.h"
#include <qpainterpath.h>

class QwtSplineParametrization;

class QWT_EXPORT QwtSplineApproximation
{
public:
    enum BoundaryType
    {
        ConditionalBoundaries,
        PeriodicPolygon,

        ClosedPolygon
    };

    QwtSplineApproximation();
    virtual ~QwtSplineApproximation();

    void setParametrization( int type );
    void setParametrization( QwtSplineParametrization * );
    const QwtSplineParametrization *parametrization() const;

    void setBoundaryType( BoundaryType );
    BoundaryType boundaryType() const;

    virtual QPainterPath painterPath( const QPolygonF & ) const = 0;
    virtual uint locality() const;

private:
    Q_DISABLE_COPY(QwtSplineApproximation)

    class PrivateData;
    PrivateData *d_data;
};

#endif