diagramBackup/diagramCavas/include/graphicsItem/electricConnectLineItem.h

#ifndef ELECTRICCONNECTLINEITEM_H
#define ELECTRICCONNECTLINEITEM_H

#include <QPainterPath>
#include <QUuid>
#include "graphicsBaseItem.h"

class ElectricConnectLineItem : public GraphicsProjectModelItem
{
public:
    ElectricConnectLineItem(QGraphicsItem *parent = 0);
    ElectricConnectLineItem(const ElectricConnectLineItem&);        //暂不拷贝位置关系,由线自己计算
    virtual ~ElectricConnectLineItem();
    virtual ElectricConnectLineItem* clone() const override;

    void setStartPoint(const QPointF& p);
    void setEndPoint(const QPointF& p);
    QPainterPath getPoints(void) const { return m_points; }

    void moveLine(QPointF);             //鼠标点击拖动
    void resetCurLine(){_curLine = QPoint();}
    void calculatePath();
    void generateAvoidancePath(const QPointF& start, const QPointF& end,const QList<QRectF>& obstacleShapes);   // 使用形状进行避障
    double calculatePathLength(const QList<QPointF>& path);
    bool lineIntersectsRect(const QLineF& line, const QRectF& rect);
    bool isSegmentSafe(const QPointF& p1, const QPointF& p2,const QList<QRectF>& components);
    bool isPathSafe(const QList<QPointF>& path,const QList<QRectF>& components);
    bool segmentPenetratesComponent(const QLineF& segment,const QRectF& component);
    QRectF getTotalComponentsBounds(const QList<QRectF>& components);
    void collectRectilinearPaths(const QPointF& start, const QPointF& end,const QList<QRectF>& components,QMultiMap<double, QList<QPointF>>& paths);
    void addPathIfRectilinear(const QList<QPointF>& path,QMultiMap<double, QList<QPointF>>& paths);
    void collectBypassPaths(const QPointF& start, const QPointF& end,const QList<QRectF>& components,QMultiMap<double, QList<QPointF>>& paths);
    void generateForcedRectilinearBypass(const QPointF& start, const QPointF& end,const QList<QRectF>& components);
    QRectF findFirstBlockingComponent(const QPointF& start, const QPointF& end,const QList<QRectF>& components);

    virtual QPainterPath shape() const override;
    virtual QRectF boundingRect() const override;
    virtual void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*) override;

protected:
    void initial();
private:
    QPainterPath        m_points;
    QPainterPath        m_pointsBoundingRect;       //包裹点的矩形集合
    QList<QPointF>      m_lstPoints;
    QPoint              _curLine;               //参数1用点序号表示的当前线段起始点,参数2表示线段方向

};

#endif