//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGMeshEdge3D Àà
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGMeshEdge3D ÉùÃ÷
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGMESHEDGE3D_H_
#define _TGMESHEDGE3D_H_

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

class TPGeCurve3D;
class TGMesh3D;
class TGMeshNode3D;

class GEOAPI TGMeshEdge3D : public TWFlag
{
	friend class TPGeCurveMesh3D;
public:
	
	TGMeshEdge3D(const TPGeCurve3D* pCurve,TGMeshNode3D* pNode1,TGMeshNode3D*pNode2);
	virtual ~TGMeshEdge3D();

	const TPGeCurve3D* GetCurve()const;
	const TGMeshNode3D* GetNode(int i=1)const;
	bool IsLine()const;
	TGMeshNode3D* GetNextNode(TGMeshNode3D*pNode)const;

	bool operator > (const TGMeshEdge3D&edge)const;
	bool operator < (const TGMeshEdge3D&edge)const;

	TGMeshEdge3D* FindNextEdge(TGMeshNode3D* &pNodeStart,TGMesh3D*pMesh);
	TGMeshEdge3D* FindPreEdge(TGMeshNode3D* &pNodeStart,TGMesh3D*pMesh);
	TGMesh3D* FindMesh(int i=1);

	TGMesh3D* FindSDMesh();
	TGMeshEdge3D* FindNextSDEdge(TGMesh3D*pMesh);
	TGMeshEdge3D* FindPreSDEdge(TGMesh3D*pMesh);

public:
	TGMesh3D *m_pMesh1,*m_pMesh2;

protected:
	const TPGeCurve3D *m_pCurve;
	TGMeshNode3D *m_pNode1,*m_pNode2;
};
#endif