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31 lines
1.2 KiB
C++
31 lines
1.2 KiB
C++
#ifndef VCONTROLPOINTSPLINE_H
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#define VCONTROLPOINTSPLINE_H
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#include <QGraphicsEllipseItem>
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#include <QGraphicsLineItem>
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#include <QObject>
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#include "../options.h"
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class VControlPointSpline : public QObject, public QGraphicsEllipseItem
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{
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Q_OBJECT
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public:
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VControlPointSpline(const QPointF &controlPoint, const QPointF &splinePoint, QGraphicsItem * parent = 0);
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void RefreshLine(const QPointF &controlPoint, const QPointF &splinePoint);
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signals:
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void ControlPointChangePosition(const QPointF pos);
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protected:
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qreal radius;
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QGraphicsLineItem *controlLine;
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virtual void hoverMoveEvent ( QGraphicsSceneHoverEvent * event );
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virtual void hoverLeaveEvent ( QGraphicsSceneHoverEvent * event );
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QVariant itemChange ( GraphicsItemChange change, const QVariant &value );
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private:
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qint32 LineIntersectCircle(QPointF center, qreal radius, QLineF line, QPointF &p1,
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QPointF &p2) const;
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QPointF ClosestPoint(QLineF line, QPointF p) const;
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QPointF addVector (QPointF p, QPointF p1, QPointF p2, qreal k) const;
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};
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#endif // VCONTROLPOINTSPLINE_H
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