//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGPolygonEx2D 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGPolygonEx2D 声明 可有洞的多边形平面联通域
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGPOLYGONEX2D_H_
#define _TGPOLYGONEX2D_H_

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

#ifndef _TGREGION2D_H_
#include "TGRegion2D.h"
#endif

#ifndef _TPDLIST_H_
#include "TPDList.h"
#endif

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

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

#ifndef _TPGEGLINE2D_H_
#include "TPGeGLine2D.h"
#endif

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

class GEOAPI TGPolygonEx2D : public TGPolygon2D
{
	DECLARE_RUN_TIME_CLASS(TGPolygonEx2D)
public:
	//contruct
	TGPolygonEx2D(long vertexNum = 0);
	//检查是否逆时针方向曲线
	TGPolygonEx2D(const TGMLine2D&ml,bool bCheck=true);
	TGPolygonEx2D(const TGPolygonEx2D&poly);
	TGPolygonEx2D(const TGPolygon2D&poly);
	virtual ~TGPolygonEx2D();

	//override TGRegion2D
	virtual long GetBoundaryNum() const;
	virtual bool Inter(const TGRegion2D&face,TGObjectList&res) const;
	virtual void SubtractBy(const TGRegion2D&face,TGObjectList&res) const;
	virtual void CutBy(const TPGeCurve2D&curve,TGObjectList&left,TGObjectList&right) const;

	virtual TGRegion2D* Union(const TGRegion2D&face) const;
	virtual TPGeCurve2D* GetBoundary(long i) const;

	//override TGObject
	virtual bool IsValid() const;
	virtual TGObject* Clone() const;
	
	//分解为TGPolygon2D
	virtual bool Explode(TGObjectList&oList) const;

	//edit
	//检查有效性，如果不成功，内部自动释放pMl
	bool AppendHole(TGMLine2D*pMl,bool bCheck=true);
	void ClearHole();
	void DelHole(long i);

	TGMLine2D* FetchHole(long i);
	TGMLine2D& Hole(long i) const;
	
	//operate
	bool Inter(const TGPolygon2D&poly,TGObjectList&res) const;
	bool Inter(const TGPolygonEx2D&poly,TGObjectList&res) const;
	
	TGRegion2D* Union(const TGPolygon2D&poly) const;
	TGRegion2D* Union(const TGPolygonEx2D&poly) const;
	
	void SubtractBy(const TGPolygon2D&poly,TGObjectList&res) const;
	void SubtractBy(const TGPolygonEx2D&poly,TGObjectList&res) const;
	
	//只适用于边界线之间无交情况
	void QuickCutBy(const TPGeGLine2D&line,TGObjectList&left,TGObjectList&right) const;

protected:
	TPDList<TGMLine2D> hole;

};
#endif