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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RG_SPLINE_H_
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#define _RG_SPLINE_H_
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#include "base/FastVector.h"
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class TQPoint;
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class PointList;
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namespace Rosegarden
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{
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class Spline
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{
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public:
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typedef FastVector<TQPoint> PointList;
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/**
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* Calculate a set of polyline points to approximate
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* a Bezier spline. Caller takes ownership of returned
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* heap-allocated container.
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*/
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static PointList *calculate(const TQPoint &start, const TQPoint &finish,
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const PointList &controlPoints,
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TQPoint &topLeft, TQPoint &bottomRight);
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private:
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static void calculateSegment
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(PointList *acc,
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const TQPoint &start, const TQPoint &finish, const TQPoint &control,
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TQPoint &topLeft, TQPoint &bottomRight);
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static void calculateSegmentSub
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(PointList *acc,
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const TQPoint &start, const TQPoint &finish, const TQPoint &control, int n,
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TQPoint &topLeft, TQPoint &bottomRight);
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};
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}
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#endif
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