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33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
35 lines
1017 B
C++
35 lines
1017 B
C++
/******************************************************************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_SPLINE_BASIS_H
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#define QWT_SPLINE_BASIS_H
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#include "qwt_global.h"
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#include "qwt_spline.h"
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/*!
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\brief An approximation using a basis spline
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QwtSplineBasis approximates a set of points by a polynomials with C2 continuity
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( = first and second derivatives are equal ) at the end points.
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The end points of the spline do not match the original points.
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*/
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class QWT_EXPORT QwtSplineBasis : public QwtSpline
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{
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public:
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QwtSplineBasis();
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virtual ~QwtSplineBasis();
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virtual QPainterPath painterPath( const QPolygonF& ) const QWT_OVERRIDE;
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virtual uint locality() const QWT_OVERRIDE;
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};
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#endif
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