//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGNPolygon2D 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGNPolygon2D 声明 凸多边形平面域
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGNPOLYGON2D_H_
#define _TGNPOLYGON2D_H_

#ifndef _TGPOLYGON2D_H_
#include "TGPolygon2D.h"
#endif

#ifndef _TGMLINE2D_H_
#include "TGMLine2D.h"
#endif

#ifndef _TGOBJECTLIST_H_
#include "TGObjectList.h"
#endif

#ifndef _TPGECURVE2D_H_
#include "TPGeCurve2D.h"
#endif

#ifndef _TGOBJECT_H_
#include "TGObject.h"
#endif

#ifndef _TWFLAG_H_
#include "TWFlag.h"
#endif

class GEOAPI TGNPolygon2D:public TGPolygon2D
{
public:
	//contruct
	TGNPolygon2D(long vertexNum=0);
	TGNPolygon2D(const TGMLine2D&ml,bool bCheck=true);
	TGNPolygon2D(const TGPolygon2D&poly);
	
	virtual ~TGNPolygon2D();

	//override TGRegion2D
	virtual void CutBy(const TPGeCurve2D&curve,TGObjectList&left,TGObjectList&right)const;

	//override TGObject
	virtual TGObject* Clone()const;
	virtual GRelation HitTest(const TGPoint&pt)const;
	virtual bool Explode(TGObjectList&res)const;
	virtual bool IsValid()const;
	virtual bool IsInclude(const TGObject&obj)const;
};
#endif