valentina_old/src/geometry/vspline.h

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/************************************************************************
**
** @file vspline.h
** @author Roman Telezhinsky <dismine@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 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/>.
**
*************************************************************************/
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#ifndef VSPLINE_H
#define VSPLINE_H
#include "vpointf.h"
#include "vgobject.h"
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#include <QHash>
#include <QLineF>
#include <QPainterPath>
class QString;
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#define M_2PI 6.28318530717958647692528676655900576
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/**
* @brief VSpline class that implements the spline.
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*/
class VSpline :public VGObject
{
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public:
/**
* @brief VSpline default constructor
*/
VSpline();
/**
* @brief VSpline constructor.
* @param spline spline from which the copy.
*/
VSpline (const VSpline &spline );
/**
* @brief VSpline constructor.
* @param p1 first point spline.
* @param p4 last point spline.
* @param angle1 angle from first point to first control point.
* @param angle2 angle from second point to second control point.
* @param kCurve coefficient of curvature spline.
* @param kAsm1 coefficient of length first control line.
* @param kAsm2 coefficient of length second control line.
*/
VSpline (VPointF p1, VPointF p4, qreal angle1, qreal angle2, qreal kAsm1, qreal kAsm2, qreal kCurve,
quint32 idObject = 0, Draw::Draws mode = Draw::Calculation);
/**
* @brief VSpline constructor.
* @param p1 first point spline.
* @param p2 first control point.
* @param p3 second control point.
* @param p4 second point spline.
*/
VSpline (VPointF p1, QPointF p2, QPointF p3, VPointF p4, qreal kCurve, quint32 idObject = 0,
Draw::Draws mode = Draw::Calculation);
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/**
* @brief GetP1 return first spline point.
* @return first point.
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*/
VPointF GetP1 () const {return p1;}
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/**
* @brief GetP2 return first control point.
* @return first control point.
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*/
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inline QPointF GetP2 () const {return p2;}
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/**
* @brief GetP3 return second control point.
* @return second control point.
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*/
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inline QPointF GetP3 () const {return p3;}
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/**
* @brief GetP4 return last spline point.
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* @return остання точка сплайну.
*/
inline VPointF GetP4 () const {return p4;}
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/**
* @brief GetAngle1 return first angle control line.
* @return angle.
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*/
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inline qreal GetAngle1 () const {return angle1;}
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/**
* @brief GetAngle2 return second angle control line.
* @return angle.
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*/
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inline qreal GetAngle2() const {return angle2;}
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/**
* @brief GetLength return length of spline.
* @return length.
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*/
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qreal GetLength () const;
/**
* @brief name return spline name. Used for variables.
* @return name.
*/
QString name () const;
/**
* @brief GetKasm1 return coefficient of length first control line.
* @return coefficient.
*/
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inline qreal GetKasm1() const {return kAsm1;}
/**
* @brief GetKasm2 return coefficient of length second control line.
* @return coefficient.
*/
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inline qreal GetKasm2() const {return kAsm2;}
/**
* @brief GetKcurve return coefficient of curvature spline.
* @return coefficient
*/
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inline qreal GetKcurve() const {return kCurve;}
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/**
* @brief CrossingSplLine check intersection spline with line.
* @param line line.
* @param intersectionPoint intersection point.
* @return result intersection.
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*/
QLineF::IntersectType CrossingSplLine(const QLineF &line, QPointF *intersectionPoint ) const;
qreal LengthT(qreal t) const;
/**
* @brief CutSpline cut spline. GetPointP1() of base spline will return first point for first spline, GetPointP4()
* of base spline will return forth point of second spline.
* @param length length first spline
* @param spl1p2 second point of first spline
* @param spl1p3 third point of first spline
* @param spl2p2 second point of second spline
* @param spl2p3 third point of second spline
* @return point of cutting. This point is forth point of first spline and first point of second spline.
*/
QPointF CutSpline ( qreal length, QPointF &spl1p2, QPointF &spl1p3, QPointF &spl2p2, QPointF &spl2p3) const;
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/**
* @brief GetPoints return list with spline points.
* @return list of points.
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*/
QVector<QPointF> GetPoints () const;
/**
* @brief GetPath return QPainterPath for this spline.
* @return path.
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*/
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QPainterPath GetPath() const;
/**
* @brief SplinePoints return list with spline points.
* @param p1 first spline point.
* @param p4 last spline point.
* @param angle1 angle from first point to first control point.
* @param angle2 angle from second point to second control point.
* @param kAsm1 coefficient of length first control line.
* @param kAsm2 coefficient of length second control line.
* @param kCurve coefficient of curvature spline.
* @return
*/
static QVector<QPointF> SplinePoints(const QPointF &p1, const QPointF &p4, qreal angle1, qreal angle2, qreal kAsm1,
qreal kAsm2, qreal kCurve);
/**
* @brief operator = assignmeant operator
* @param spl spline
* @return spline
*/
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VSpline &operator=(const VSpline &spl);
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protected:
/**
* @brief GetPoints return list with spline points.
* @param p1 first spline point.
* @param p2 first control point.
* @param p3 second control point.
* @param p4 last spline point.
* @return list of points.
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*/
static QVector<QPointF> GetPoints (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 );
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private:
/**
* @brief p1 first spline point.
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*/
VPointF p1;
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/**
* @brief p2 first control point.
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*/
QPointF p2;
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/**
* @brief p3 second control point.
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*/
QPointF p3;
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/**
* @brief p4 last spline point.
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*/
VPointF p4;
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/**
* @brief angle1 first angle control line.
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*/
qreal angle1;
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/**
* @brief angle2 second angle control line.
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*/
qreal angle2;
/**
* @brief kAsm1 coefficient of length first control line.
*/
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qreal kAsm1;
/**
* @brief kAsm2 coefficient of length second control line.
*/
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qreal kAsm2;
/**
* @brief kCurve coefficient of curvature spline.
*/
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qreal kCurve;
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/**
* @brief LengthBezier return spline length using 4 spline point.
* @param p1 first spline point
* @param p2 first control point.
* @param p3 second control point.
* @param p4 last spline point.
* @return length.
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*/
qreal LengthBezier (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 ) const;
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/**
* @brief PointBezier_r find spline point using four point of spline.
* @param x1 х coordinate first point.
* @param y1 у coordinate first point.
* @param x2 х coordinate first control point.
* @param y2 у coordinate first control point.
* @param x3 х coordinate second control point.
* @param y3 у coordinate second control point.
* @param x4 х coordinate last point.
* @param y4 у coordinate last point.
* @param level level of recursion. In the begin 0.
* @param px list х coordinat spline points.
* @param py list у coordinat spline points.
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*/
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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);
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/**
* @brief CalcSqDistance calculate squared distance.
* @param x1 х coordinate first point.
* @param y1 у coordinate first point.
* @param x2 х coordinate second point.
* @param y2 у coordinate second point.
* @return squared length.
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*/
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static qreal CalcSqDistance ( qreal x1, qreal y1, qreal x2, qreal y2);
/**
* @brief CreateName create spline name.
*/
void CreateName();
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};
#endif // VSPLINE_H