#pragma once
#include "itembreakcurve.h"


namespace NItem
{
class CItemExtendCurve :
	public CItemBreakCurve
{
public:
	CItemExtendCurve(CSigmaDoc * ppDoc);
	virtual ~CItemExtendCurve(void);

	void DoLButtonUp(CDC *pDC) override;
	void OnRButtonDown(UINT nFlags, CPoint point) override;
	BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) override;
	int ProcessCurve(CCurveEx* pCurve, COne* pOne, CPoint2D* pPoint) override;
	int  GetSubMenu() override;
	BOOL OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) override;

	double maxExtendLength;
	int m_nExtendIdea;

	BOOL ExtendCurve(CCurveEx* pBaseCurve, CCurveEx* pExtendCurve, int nExtendIdea);

	int ExtendCurve(CPositionList& baseList);
	POSITION FindBaseCurve(CPtrList& list, CCurveEx* pCurve, BOOL bIsTail);

	bool m_bExtendCurveFinished = false; // 每次执行线段延伸，都会创建一个新的对象，所以不用担心它在上面执行时被置为 true
};

};