//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGGePolygonEx类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGGePolygonEx类声明
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _TGGEPOLYGONEX_H_
#define _TGGEPOLYGONEX_H_

#ifndef _TGGEPOLY_H_
#include "TGGePoly.h"
#endif

#ifndef _TENTITYSET_H_
#include "TEntitySet.h"
#endif

#ifndef _TGGETRIANGLE_H_
#include "TGGeTriangle.h"
#endif

#ifndef _TLOOPLIST_H_
#include "TLoopList.h"
#endif


// 多边形的三角形化
class GEOAPI TGGePolygonEx : public TGGePoly 
{
public:
	TGGePolygonEx();
	TGGePolygonEx(TGGePoly &src);
	TGGePolygonEx(TEntitySet &ent);
	TGGePolygonEx(const TGGePolygonEx &src);
	virtual ~TGGePolygonEx();

	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;
	virtual void CopyFrom(const TGGeEntity* pSrc);
	
	TADSGePoint3d * operator [](int nIndex);
	const TADSGePoint3d & operator [](int nIndex) const;
	TGGePolygonEx & operator = (const TGGePolygonEx &src);
		
    // 求法向量，用来作为坐标变换
    int GetNormal(TVector3D &vtNormal) const;

	int Make(const TCHAR *szLay);

	// b2D--TRUE, 已经是二维；否则是三维，需要坐标变换
    int Trianglize(TDPtrList<TGGeTriangle> &lstTris, BOOL b2D = FALSE) const;
	int SubTrianglize(TDPtrList<TGGeTriangle> &lstTris);

	int GetInsidePoint(TADSGePoint3d &ptRet, BOOL b2D = FALSE) const;
	int SubGetInsidePoint(TADSGePoint3d &ptRet);

	//是否为凸多边形，2D
	BOOL IsConvex() const; 
	BOOL IsVisible(int idx) const;
	
	void Reset();
	void Reverse();
	void Ecs2Wcs(TVector3D vtEcs);
	void Wcs2Ecs(TVector3D vtEcs);
  
	void SetVisible(int idx, BOOL bVis);
	
	void RemoveNode(int nIndex);
	void AppendNode(const TADSGePoint3d &pt, int nIndex = 1);

	double GetEdgeLength(int idx) const;
	double GetAngle(int idx) const;
	TADSGePoint3d GetVertex(int idx) const;
	TLoopList<int>& GetVisibleFlag();
	
public:
	// 1--visible; 0-invisible  
	TLoopList<int> m_lstVisibleFlag; 
};

#endif