valentina/widgets/vcontrolpointspline.h

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/************************************************************************
**
** @file vcontrolpointspline.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 VCONTROLPOINTSPLINE_H
#define VCONTROLPOINTSPLINE_H
#include <QGraphicsEllipseItem>
#include <QObject>
#include "../geometry/vsplinepath.h"
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class VControlPointSpline : public QObject, public QGraphicsEllipseItem
{
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Q_OBJECT
public:
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VControlPointSpline(const qint32 &indexSpline, SplinePoint::Position position,
const QPointF &controlPoint, const QPointF &splinePoint,
QGraphicsItem * parent = 0);
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signals:
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void ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
const QPointF pos);
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public slots:
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void RefreshLine(const qint32 &indexSpline, SplinePoint::Position pos, const QPointF &controlPoint,
const QPointF &splinePoint);
void setEnabledPoint(bool enable);
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protected:
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qreal radius;
QGraphicsLineItem *controlLine;
virtual void hoverMoveEvent ( QGraphicsSceneHoverEvent * event );
virtual void hoverLeaveEvent ( QGraphicsSceneHoverEvent * event );
QVariant itemChange ( GraphicsItemChange change, const QVariant &value );
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private:
Q_DISABLE_COPY(VControlPointSpline)
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qint32 indexSpline;
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SplinePoint::Position position;
qint32 LineIntersectCircle(const QPointF &center, qreal radius, const QLineF &line, QPointF &p1,
QPointF &p2) const;
QPointF ClosestPoint(const QLineF &line, const QPointF &p) const;
QPointF addVector (const QPointF &p, const QPointF &p1, const QPointF &p2, qreal k) const;
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};
#endif // VCONTROLPOINTSPLINE_H