#pragma once
#include "GeLine.h"

class EntitySet;
class ADSGePointDir2d;
class GePoly2D;
class GeCurveSegment: public GeLine
{
public:

	GeCurveSegment(int flg = LS_FINITE);
	GeCurveSegment(const GeCurveSegment &src);
	GeCurveSegment(const EntitySet & ent, int flg = LS_FINITE);
	GeCurveSegment(const ADSGePoint3d &spt, const ADSGePoint3d &ept, ads_real dAng, int flg = LS_FINITE);

	virtual ~GeCurveSegment();

	GeCurveSegment & operator = (const GeLine &ln);
	GeCurveSegment & operator = (const GeArc &arc);
	GeCurveSegment & operator = (const GeCircle &cir);
	GeCurveSegment & operator = (const GeCurveSegment &src);

	bool operator == (const GeCurveSegment &src) const;

	//lfy 2010-08-31 增加line,arc的set函数
	GeCurveSegment & SetLine(const ADSGePoint3d& pt1, const ADSGePoint3d& pt2);
	GeCurveSegment & SetArc(const ADSGePoint3d &spt, const ADSGePoint3d &ept, ads_real dang);
	GeCurveSegment & SetCircle(const ADSGePoint3d& ptCen,double dRadius);
	
	
	virtual bool IsKindOf(GeEntity::TEntityId entType) const;
	virtual GeEntity::TEntityId Type() const;
	virtual void CopyFrom(const GeEntity* pSrc);

	virtual int Make(LPCTSTR lay = NULL) const;	
	virtual int MakeEntity(const EntitySet &e);
	
	virtual int HitTest2d(const ADSGePoint3d &ptTest) const;
	
	virtual int OSnap(int nMode, ADSGePoint3d &ptPick) const;

	virtual int GetExtend(ADSGePoint3d &low, ADSGePoint3d &up) const;

	virtual int Intersection(const GeArc* pArc, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;
	virtual int Intersection(const GeCircle* pCircle, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;

	virtual void TransformBy(ads_matrix mat);

	virtual void SetPoints(const ADSGePoint3d &ptStart, const ADSGePoint3d &ptEnd);

	//图形长度，周长
	virtual ads_real GetLength() const;	

	virtual ADSGePoint3d MidPoint() const; 

    // 与曲线方向有关的成员
	virtual GeArc GetArc() const;
	
	// 0--左（内）；1－右（外）；2－其他 ---> 枚举,下同
	virtual int OnWhichSide(const ADSGePoint3d &src) const;
	
	// 0－左；1－右；2－其他；与上面的区别是，弧段作为有限长，在圆外但在弦的左侧算左
	virtual int OnWhichSide1(const ADSGePoint3d &src) const;
    
    // 从端点开始沿曲线走过给定距离的点向量
    virtual int Polar(ads_real nDist, ADSGePointDir2d &res, int bFromStart = 1) const;

	virtual void AsPoly2D(GePoly2D &poly) const;

	virtual ads_real PathArea(ADSGePoint3d &tmpt) const;
	
	// 取得指向内部的方向，线和弧不支持圆。 pt--0:start; 1--end
	virtual ads_real IDirection(int pt) const; 
	
	// 曲线上的点pt的方向(切向)
	virtual ads_real Direction(const ADSGePoint3d &pt) const; 

	// 求通过pt点的法向
    virtual ads_real OrthoDirection(const ADSGePoint3d &pt) const;
     
	// 求到端点的沿曲线线位移, 在线内距离为正,否则为负, 和Polar配合使用
    // pt如果不在线上的话则先投影
    virtual ads_real PathDistance(const ADSGePoint3d &pt, int bFromStart = 1) const;
	
	virtual bool IsDirectionCurve();
    
	int Is(CurveType t) const;
	
	int MakeArrow(EntitySet &) const;

	int ProjectToMe(const ADSGePoint3d &src, ADSGePoint3d &res) const;

	int Intersection(const GeLine &, ads_point, ads_point) const ;
	int Intersection(const GeCurveSegment &, ads_point pt1, ads_point pt2) const;

	int GetSubSegment(const ADSGePoint3d &ptloc, ads_real dchordLen, GeCurveSegment &ptres) const;
	
	//Wcs到展开坐标系
	ADSGePoint3d Wcs2Ecs(ADSGePoint3d pt) const; 
	//展开坐标系到Wcs
	ADSGePoint3d Ecs2Wcs(ADSGePoint3d pt) const; 
	
	void Wcs2Ecs(const GePoly2D &polyWcs, GePoly2D &polyEcs) const;
	void Ecs2Wcs(const GePoly2D &polyEcs, GePoly2D &polyWcs) const;
	
	GeCircle GetCircle() const;
	GeLine GetLine() const;

	//点到曲线的距离, 负数为内/左侧
	double GetDist2Me(ADSGePoint3d ptMid) const;

    double GetChordLength(double nArcLen) const;

	CurveType GetCurveType() const;
	
	static resbuf *Mask(LPCTSTR lay = NULL);
	
	resbuf * AsFence(int nCirDiv = 20) const;

	AcDbCurve *AsAcDbCurve() const;

	GeCurveSegment Offset(ads_real dDist, int nflg) const;
	GeCurveSegment Offset(int lr, ads_real dDist, int nflg) const;

	double GetBulge() const;
	void SetBulge(const double dBulge);
public: 
	
	ads_real	  m_dBulge;  
};

class GeDirectionCurve : public GeCurveSegment
{
public:
	GeDirectionCurve(int flg = LS_FINITE);
	GeDirectionCurve(const GeArc &ar, int bMinus = 0);
	GeDirectionCurve(const GeDirectionCurve &src);
	GeDirectionCurve(const ADSGePoint3d &spt, const ADSGePoint3d &ept, ads_real dAng = 0.0, int flg = LS_FINITE);

	virtual ~GeDirectionCurve();

	virtual	int IsMinusArc() const;

	// 与曲线方向有关的成员
	virtual int  OnWhichSide(const ADSGePoint3d &src) const;
	virtual int  OnWhichSide1(const ADSGePoint3d &src) const;

	// 从端点开始沿曲线走过给定距离的点向量
	virtual int  Polar(ads_real nDist, ADSGePointDir2d &res, BOOL bFromStart = TRUE) const;

	virtual void Reverse();

	virtual void TransUCS(ads_matrix mat);
	virtual void TransUCS(const resbuf *, const resbuf *);

	virtual void AsPoly2D(GePoly2D &poly) const;

	virtual void SetPoints(const ADSGePoint3d &ptStart, const ADSGePoint3d &ptEnd);

	// 端点处朝曲线段内部的方向
	virtual ads_real IDirection(int pt) const;

	// 取得指向内部的方向支持Line,Arc，不支持Cir。 pt--0:start; 1--end
	virtual ads_real PathArea(ADSGePoint3d &tmpt) const;

	virtual ads_real Direction(const ADSGePoint3d &pt) const;

	// 求到端点的沿曲线线位移, 在线内距离为正,否则为负, 和Polar配合使用
	// pt如果不在线上的话则先投影
	virtual ads_real PathDistance(const ADSGePoint3d &pt, BOOL bFromStart = TRUE) const;

	// 求通过pt点的法向
	virtual ads_real OrthoDirection(const ADSGePoint3d &pt) const;

	// dist left<0 / right>0
	virtual GeCurveSegment GetCurve() const;
	virtual GeDirectionCurve Offset(ads_real dist, int flg) const;

	virtual bool IsDirectionCurve();

	GeArc  GetArc() const;
};