//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGGeLinearEnt.h
// = Version	:   ver2.0
// = Author		:   xlc
// = CreateDate	:   2002-09-09
// = Description:   线性图形基类TGGeLinearEnt类的声明
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _TGGELINEARENT_H_
#define _TGGELINEARENT_H_

#ifndef _TGGECURVE_H_
#include "TGGeCurve.h"
#endif

class TGGeArc;
class TGGeCircle;
class GEOAPI TGGeLinearEnt : public TGGeCurve
{
public:
	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;

	virtual void TransformBy(ads_matrix mat);
	virtual int GetExtend(TADSGePoint3d &ptlow, TADSGePoint3d &ptup) const;
	//图形长度，周长
	virtual ads_real GetLength() const;		
	virtual int Make(const TCHAR *szlay = NULL) const;
	virtual int MakeEntity(const TEntitySet* pEntity) const;

	//  0--错误；1－左边；2－右边；3－起始点；4－终止点；5－线内；6－起始侧延长线；7－终止侧延长线
	virtual int HitTest2d(const TADSGePoint3d &ptTest) const;

	virtual TADSGePoint3d MidPoint() const;
	virtual void SetPoints(const TADSGePoint3d& pt1, const TADSGePoint3d& pt2);
	virtual int OSnap(int nMode, TADSGePoint3d &ptPick) const;
	virtual int Intersection(const TGGeArc* pArc, ads_point ptrp1 = NULL, ads_point ptrp2 = NULL) const;
	virtual int Intersection(const TGGeCircle* pCircle, ads_point ptrp1 = NULL, ads_point ptrp2 = NULL) const;
	virtual void CopyFrom(const TGGeEntity* pImpSrc);

protected:
			 TGGeLinearEnt();
	virtual ~TGGeLinearEnt();
};

#endif