valentina/src/libs/vgeometry/vabstractcubicbezier.h

/************************************************************************
 **
 **  @file   vabstractcubicbezier.h
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   8 3, 2016
 **
 **  @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) 2016 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 VABSTRACTCUBICBEZIER_H
#define VABSTRACTCUBICBEZIER_H

#include "vabstractcurve.h"

class VPointF;

class VAbstractCubicBezier : public VAbstractCurve
{
public:
    VAbstractCubicBezier(const GOType &type, const quint32 &idObject = NULL_ID, const Draw &mode = Draw::Calculation);
    VAbstractCubicBezier(const VAbstractCubicBezier &curve);
    VAbstractCubicBezier& operator= (const VAbstractCubicBezier &curve);
    virtual ~VAbstractCubicBezier();

    virtual VPointF GetP1 () const =0;
    virtual VPointF GetP4 () const =0;

    QPointF CutSpline ( qreal length, QPointF &spl1p2, QPointF &spl1p3, QPointF &spl2p2, QPointF &spl2p3) const;

    virtual QString NameForHistory(const QString &toolName) const Q_DECL_OVERRIDE;

    qreal GetParmT(qreal length) const;
    qreal LengthT(qreal t) const;

protected:
    virtual void CreateName() Q_DECL_OVERRIDE;

    static qreal            CalcSqDistance(qreal x1, qreal y1, qreal x2, qreal y2);
    static void             PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4,
                                          qreal y4, qint16 level, QVector<qreal> &px, QVector<qreal> &py);
    static QVector<QPointF> GetCubicBezierPoints(const QPointF &p1, const QPointF &p2, const QPointF &p3,
                                                 const QPointF &p4);
    static qreal            LengthBezier(const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4);

    virtual QPointF GetControlPoint1() const =0;
    virtual QPointF GetControlPoint2() const =0;
};

#endif // VABSTRACTCUBICBEZIER_H