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

#ifndef _TGGESHAPE_H_
#include "TGGeShape.h"
#endif

#ifndef _TADSGEPOINT3D_H_
#include "TADSGePoint3d.h"
#endif

class TGGeArc;
class TGGeLine;
class TEntitySet;

class GEOAPI TGGeCircle : public TGGeShape
{	
public:
	TGGeCircle();
	TGGeCircle(const TGGeCircle &src);
	TGGeCircle(const ads_point, const ads_point);
	TGGeCircle(const ads_point ptcenter,double dradius);
	TGGeCircle(const TEntitySet &entCircle, ads_matrix mat = NULL);
	TGGeCircle(const TADSGePoint3d &pt1, const TADSGePoint3d &pt2, const TADSGePoint3d &pt3);
	virtual ~TGGeCircle();
	
	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;
	virtual void CopyFrom(const TGGeEntity* pSrc);
		
	virtual ShapeType GetShapeType() const;

	virtual int Intersection(const TGGeLine* pLine, ads_point ptrp1 = NULL, ads_point ptrp2 = NULL) const;
	virtual int Intersection(const TGGeArc* pArc, ads_point ptrp1 = NULL, ads_point ptrp2 = NULL) const;
	virtual int Intersection(const TGGeCircle* pCir, ads_point ptrp1 = NULL, ads_point ptrp2 = NULL) const;
	
	virtual int GetExtend(ads_point lowPt, ads_point upPt) const;
	virtual int GetSubArc(const TADSGePoint3d& ptloc, ads_real dchordLen, TGGeArc& xarcres) const;
	
	virtual int Make(const TCHAR* szlay = NULL) const;
	virtual int Modify(const TEntitySet* pEntity) const;      
	virtual int MakeEntity(const TEntitySet* pEntity) const;
	
	virtual void Center(ads_point ptCen);
	//图形长度，周长
	virtual ads_real GetLength() const;

	virtual	ads_real Area() const;
	
	virtual	int HitTest2d(const TADSGePoint3d &ptTest) const;
	virtual	int OSnap(int nMode, TADSGePoint3d &ptPick) const;
	
	//第一象限点圆心变换,求半径
	virtual	void TransUCS(ads_matrix mat);

	int      operator !() const;
	TGGeCircle& operator = (const TGGeCircle &src);
	bool     operator == (const TGGeCircle &src) const;

	TGGeCircle Offset(ads_real dist) const;

	TADSGePoint3d GetCenterPt();
	TADSGePoint3d GetCenterPt() const;
	void SetCenterPt(TADSGePoint3d pt);
	
	double GetRadius() const;
	double GetRadius();
	void SetRadius(double dR);
	bool Set(const TADSGePoint3d &ptStart, const TADSGePoint3d &ptOn, const TADSGePoint3d &ptEnd);
	void Set(const TADSGePoint3d &diaPt1, const TADSGePoint3d &diaPt2);

	int PtOnCircle(const TADSGePoint3d &pt);
public:
	TADSGePoint3d m_ptCenter;
	double m_dRadius;
};

inline TGGeEntity::TEntityId TGGeCircle::Type() const
{
	return TGGeEntity::eCircle;
}

#endif