//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGPLine2D 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGPLine2D 声明
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGPLINE2D_H_
#define _TGPLINE2D_H_

#ifndef _TGMLINE2D_H_
#include "TGMLine2D.h"
#endif

#ifndef _TGPOINT_H_
#include "TGPoint.h"
#endif

#ifndef _TPGECIRCLE2D_H_
#include "TPGeCircle2D.h"
#endif

#ifndef _TPGEARC2D_H_
#include "TPGeArc2D.h"
#endif

#ifndef _TARRAY_H_
#include "TArray.h"
#endif

#ifndef _TTABLE_H_
#include "TTable.h"
#endif

#ifndef _TPGELINE2D_H_
#include "TPGeLine2D.h"
#endif

#ifndef _TPGECURVE2D_H_
#include "TPGeCurve2D.h"
#endif

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

#ifndef _TGOBJECTLIST_H_
#include "TGObjectList.h"
#endif

#ifndef _TPGEGLINERAY2D_H_
#include "TPGeGLineRay2D.h"
#endif

#ifndef _TPGEGLINESEG2D_H_
#include "TPGeGLineSeg2D.h"
#endif

class GEOAPI TGPLine2D : public TGMLine2D
{
	DECLARE_RUN_TIME_CLASS(TGPLine2D)
public:
	//contruct
	TGPLine2D(long vertexNum=0,bool bClosed=false);
	TGPLine2D(const TArray<TGPoint>& vertexs,bool bClosed=false);
	TGPLine2D(const TTable<TGPoint>& vertexs,bool bClosed=false);
	TGPLine2D(const TArray<TGPoint>& vertexs,const TArray<double>& angles,bool bClosed=false);
	TGPLine2D(const TTable<TGPoint>& vertexs,const TTable<double>& angles,bool bClosed=false);
	TGPLine2D(const TGMLine2D& mLine); 
	TGPLine2D(const TPGeCircle2D& cir);
	TGPLine2D(const TPGeArc2D& arc);
	virtual ~TGPLine2D();

	//override TGMLine2D
	virtual void SetVertexNum(long num,bool bCopy=false);
	
	//消除相邻重合点,如使之有效返回true
	virtual bool RemoveDupPoint();
	
	virtual bool OffsetSeg(long i,double offset);

	//override TPGeCurve2D

	//参数区间为各段参数区间之和,即[0,GetSegNum()],弧段参数规范到[0,1]
	virtual void Pa2Pt(double pa,TGPoint& pt) const;
	virtual void Pt2Pa(const TGPoint& pt,double& pa) const;

	virtual void Reverse();
	virtual void GetTangent(double pa,TPGeLine2D& line) const;

	//只有相邻段有且只有一点交(封闭且段数为2时，有两点交)
	virtual bool IsSelfCross() const;
	virtual double Integration(double pa0,double pa1) const;
	
	//如果paDist>0,paDist为弧度间隔,不是曲线参数间隔!
	virtual TGMLine2D* MLinearize(double paDist=0) const;
	virtual TGMLine2D* PLinearize(double paDist=0) const;
	virtual TPGeCurve2D* GetSubCurve(double pa0,double pa1) const;
	virtual bool Offset(double offset);

	//override TGObject
	
	//节点数大于1，无相邻重合点，所有包络角在(-PI2,PI2)区间
	virtual bool IsValid() const;

	//分解为TPGeGLineSeg2D或TPGeArc2D
	virtual bool Explode(TGObjectList& res) const;

	virtual TGObject * Clone() const;

	virtual GRelation HitTest(const TGPoint& pt) const;
	virtual bool IsInclude(const TGObject& obj) const;
	virtual bool GetExtend2D(TPGeExtend2D& ext) const;

	//edit
	double& operator ()(long i);
	void SetClosed(bool bClosed=true,double angle=0);
	//query
	double GetBulge(long i) const;
	bool IsArc(long i) const;
	void GetSegment(long i,TPGeArc2D& seg) const;
	void GetSegment(long i,TPGeLine2D& seg) const;
	
	//外部释放
	TPGeCurve2D* GetSegment(long i) const;
	bool IsArcExist() const;
	//operate
	void QuickCut(const TPGeGLine2D& line,TGObjectList& left,TGObjectList& right,TGObjectList& mid) const;
	void QuickCut(const TPGeGLineRay2D& line,TGObjectList& left,TGObjectList& right,TGObjectList& mid) const;
	void QuickCut(const TPGeGLineSeg2D& seg,TGObjectList& left,TGObjectList& right,TGObjectList& mid) const;

protected:
	//包络角(-PI2,PI2)
	TArray<double> bulges;
};


inline void TGPLine2D::GetSegment(long i,TPGeArc2D& seg) const
{
	seg.Init(points.GetAt(i),points.GetAt((i+1)%points.GetLength()),GetBulge(i));
}

inline TPGeCurve2D* TGPLine2D::GetSegment(long i) const
{
	if(IsArc(i))
	{
		return new TPGeArc2D(points.GetAt(i),points.GetAt((i+1)%points.GetLength()),GetBulge(i));
	}
	else
	{
		return new TPGeGLineSeg2D(points.GetAt(i),points.GetAt((i+1)%points.GetLength()));
	}
}
#endif