valentina/src/libs/vgeometry/vspline.h

/************************************************************************
 **
 **  @file   vspline.h
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   November 15, 2013
 **
 **  @brief
 **  @copyright
 **  This source code is part of the Valentine project, a pattern making
 **  program, whose allow create and modeling patterns of clothing.
 **  Copyright (C) 2013-2015 Valentina project
 **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
 **
 **  Valentina is free software: you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License as published by
 **  the Free Software Foundation, either version 3 of the License, or
 **  (at your option) any later version.
 **
 **  Valentina is distributed in the hope that it will be useful,
 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 **  GNU General Public License for more details.
 **
 **  You should have received a copy of the GNU General Public License
 **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
 **
 *************************************************************************/

#ifndef VSPLINE_H
#define VSPLINE_H

#include "vabstractcubicbezier.h"
#include "vpointf.h"
#include <QLineF>
#include <QPointF>

class QPainterPath;
class VSplineData;

/**
 * @brief VSpline class that implements the spline.
 */
class VSpline :public VAbstractCubicBezier
{
public:
    VSpline();
    VSpline (const VSpline &spline );
    VSpline (VPointF p1, VPointF p4, qreal angle1, qreal angle2, qreal kAsm1, qreal kAsm2, qreal kCurve,
             quint32 idObject = 0, Draw mode = Draw::Calculation);
    VSpline (VPointF p1, QPointF p2, QPointF p3, VPointF p4, quint32 idObject = 0,
             Draw mode = Draw::Calculation);
    VSpline (VPointF p1, VPointF p4, qreal angle1, const QString &angle1Formula, qreal angle2,
             const QString &angle2Formula, qreal c1Length, const QString &c1LengthFormula, qreal c2Length,
             const QString &c2LengthFormula, quint32 idObject = 0, Draw mode = Draw::Calculation);
    virtual ~VSpline();
    VSpline &operator=(const VSpline &spl);

    virtual VPointF GetP1 () const Q_DECL_OVERRIDE;
    void            SetP1 (const VPointF &p);

    QPointF GetP2 () const;
    QPointF GetP3 () const;

    virtual VPointF GetP4 () const Q_DECL_OVERRIDE;
    void            SetP4 (const VPointF &p);

    virtual qreal GetStartAngle () const Q_DECL_OVERRIDE;
    virtual qreal GetEndAngle() const Q_DECL_OVERRIDE;

    QString GetStartAngleFormula () const;
    QString GetEndAngleFormula() const;

    void    SetStartAngle(qreal angle, const QString &formula);
    void    SetEndAngle(qreal angle, const QString &formula);

    qreal   GetC1Length() const;
    qreal   GetC2Length() const;

    QString GetC1LengthFormula() const;
    QString GetC2LengthFormula() const;

    void    SetC1Length(qreal length, const QString &formula);
    void    SetC2Length(qreal length, const QString &formula);

    virtual qreal   GetLength () const Q_DECL_OVERRIDE;
    qreal   GetKasm1() const;
    qreal   GetKasm2() const;
    qreal   GetKcurve() const;

    using VAbstractCubicBezier::CutSpline;
    QPointF CutSpline ( qreal length, VSpline &spl1, VSpline &spl2) const;

    virtual QVector<QPointF> GetPoints () const Q_DECL_OVERRIDE;
    // cppcheck-suppress unusedFunction
    static QVector<QPointF> SplinePoints(const QPointF &p1, const QPointF &p4, qreal angle1, qreal angle2, qreal kAsm1,
                                         qreal kAsm2, qreal kCurve);
    qreal   ParamT(const QPointF &pBt) const;

protected:
    virtual QPointF GetControlPoint1() const Q_DECL_OVERRIDE;
    virtual QPointF GetControlPoint2() const Q_DECL_OVERRIDE;
private:
    QSharedDataPointer<VSplineData> d;
    QVector<qreal> CalcT(qreal curveCoord1, qreal curveCoord2, qreal curveCoord3, qreal curveCoord4,
                         qreal pointCoord) const;
    static qint32  Cubic(QVector<qreal> &x, qreal a, qreal b, qreal c);
    static int     Sign(long double ld);
};

Q_DECLARE_TYPEINFO(VSpline, Q_MOVABLE_TYPE);

#endif // VSPLINE_H