//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, SH Software Co. Ltd.
// = FileName	:   XRegion2D 类
// = Version	:   ver2.0
// = Author		:   zjq
// = CreateDate	:   2002-09-09
// = Description:   XRegion2D 类声明
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _XREGION2D_H_
#define _XREGION2D_H_

#ifndef _XPOLY2D_H_
#include "XPoly2D.h"
#endif

#ifndef _DLIST_H_
#include "DList.h" 
#endif

class GEOAPI XRegion2D : public XPoly2D
{
public:
	
	XRegion2D();

	XRegion2D(const XPoly2D & poly);

	virtual ~XRegion2D();

	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;
	
	void AppendHole(XPoly2D * pPoly);

	void ClearHole();

	long GetHoleNum()const;

	const XPoly2D& GetHole(long i)const;
	XPoly2D& GetHole(long i);

	int HitTest2d(XPoint pt)const;

	virtual double Area()const;

	bool IsValid()const;
    
	//外部负责释放
	virtual AcDbRegion *AsRegion() const;
public:
	DList<XPoly2D> m_lstHole;
};

#endif