169 lines
4.3 KiB
C++
169 lines
4.3 KiB
C++
//-------------------------------------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TGMLine2D 类
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// = Version : ver2.0
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// = Author : wlw
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// = CreateDate : 2002-09-09
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// = Description: TGMLine2D 声明
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// = Maintainers:
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//
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//-------------------------------------------------------------------------------------------------------+
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#ifndef _TGMLINE2D_H_
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#define _TGMLINE2D_H_
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#ifndef _TPGECURVE2D_H_
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#include "TPGeCurve2D.h"
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#endif
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#ifndef _TPGELINE2D_H_
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#include "TPGeLine2D.h"
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#endif
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#ifndef _TGPOINT_H_
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#include "TGPoint.h"
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#endif
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#ifndef _TARRAY_H_
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#include "TArray.h"
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#endif
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#ifndef _TTABLE_H_
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#include "TTable.h"
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#endif
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#ifndef _TGOBJECT_H_
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#include "TGObject.h"
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#endif
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#ifndef _TGOBJECTLIST_H_
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#include "TGObjectList.h"
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#endif
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#ifndef _TWFLAG_H_
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#include "TWFlag.h"
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#endif
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#ifndef _TPGEARC2D_H_
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#include "TPGeArc2D.h"
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#endif
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#ifndef _TPGEGLINERAY2D_H_
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#include "TPGeGLineRay2D.h"
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#endif
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#ifndef _TPGECIRCLE2D_H_
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#include "TPGeCircle2D.h"
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#endif
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class TGObject3D;
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class TGMatrix;
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class TPGeGLineSeg2D;
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class GEOAPI TGMLine2D : public TPGeCurve2D
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{
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DECLARE_RUN_TIME_CLASS(TGMLine2D)
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public:
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//contruct
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TGMLine2D(long vertexNum = 0,bool bClosed = false);
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TGMLine2D(const TArray<TGPoint>&vertexs,bool bClosed = false);
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TGMLine2D(const TTable<TGPoint>&vertexs,bool bClosed = false);
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virtual ~TGMLine2D();
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TGMLine2D& operator = (const TArray<TGPoint>&vertexs);
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TGMLine2D& operator = (const TTable<TGPoint>&vertexs);
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TGPoint& operator[](long i);
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virtual long Pa2Seg(double&pa) const;
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virtual void SetVertexNum(long num,bool bCopy = false);
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//消除相邻重合点,如使之有效返回true
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virtual bool RemoveDupPoint();
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virtual bool OffsetSeg(long i,double offset);
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//override TPGeCurve2D
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//参数区间为各段参数区间之和,即[0,GetSegNum()]
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virtual double Length() const;
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virtual void Pa2Pt(double pa,TGPoint&pt) const;
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virtual void Pt2Pa(const TGPoint&pt,double&pa) const;
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virtual void GetStartPoint(TGPoint&pt) const;
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virtual void GetEndPoint(TGPoint&pt) const;
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virtual void Reverse();
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virtual void GetTangent(double pa,TPGeLine2D&line) const;
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//对于!IS(CLOSE_CURVE),如果首尾结点相同，也将认为是自交!
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virtual bool IsSelfCross() const;
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virtual bool IsClosed() const;
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virtual bool Offset(double offset);
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virtual double Integration(double pa0,double pa1) const;
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virtual TGMLine2D* MLinearize(double paDist = 0) const;
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virtual TPGeCurve2D* GetSubCurve(double pa0,double pa1) const;
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virtual TGPoint GetSamplePoint() const;
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//override TGObject2D
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virtual void SetElev(double elev);
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virtual double GetElev() const;
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//override TGObject
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//节点数大于1，无相邻重合点
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virtual bool IsValid() const;
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//分解为TPGeGLineSeg2D
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virtual bool Explode(TGObjectList&res) const;
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virtual void TransformBy(const TGMatrix& pMatrix);
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virtual TGObject * Clone() const;
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virtual GRelation HitTest(const TGPoint&pt) const;
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virtual bool IsInclude(const TGObject&obj) const;
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virtual bool GetExtend2D(TPGeExtend2D&ext) const;
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//edit
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void SetClosed(bool bClosed = true);
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//query
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//pa转化为本地参数
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bool IsLinear() const;
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bool IsConcave() const;
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long GetVertexNum() const;
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long GetSegNum() const;
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void GetSegment(long i,TPGeLine2D&seg) const;
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const TGPoint& GetVertex(long i) const;
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//operator
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//closed and not selfcross
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void QuickCut(const TPGeGLine2D&line,TGObjectList&left,TGObjectList&right,TGObjectList&mid) const;
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void QuickCut(const TPGeGLineRay2D&line,TGObjectList&left,TGObjectList&right,TGObjectList&mid) const;
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void QuickCut(const TPGeGLineSeg2D& seg,TGObjectList&left,TGObjectList&right,TGObjectList&mid) const;
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void QuickCut(const TPGeArc2D&arc,TGObjectList&left,TGObjectList&right) const;
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void QuickCut(const TPGeCircle2D&circle,TGObjectList&left,TGObjectList&right) const;
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//分解为不自交段,如不自交则返回false
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bool ExplodeSelfcross(TGObjectList&oList) const;
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protected:
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TArray<TGPoint> points;//节点
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};
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inline long TGMLine2D::GetSegNum() const
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{
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if(GetVertexNum() < 2)
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{
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return 0;
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}
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else
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{
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return Is(CLOSED_CURVE) ? GetVertexNum() : GetVertexNum() - 1;
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}
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}
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inline void TGMLine2D::GetSegment(long i,TPGeLine2D&seg) const
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{
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if(i < points.GetLastIndex())
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{
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seg.SetPoint(points.GetAt(i),points.GetAt(i + 1));
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}
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else
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{
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seg.SetPoint(points.GetAt(i),points.GetAt(0));
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}
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}
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#endif |