102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
//-------------------------------------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TPGeArc2D 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: TPGeArc2D 声明
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// = Maintainers:
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//
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//-------------------------------------------------------------------------------------------------------+
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#ifndef _TPGEARC2D_H_
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#define _TPGEARC2D_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 _TPGECIRCLE2D_H_
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#include "TPGeCircle2D.h"
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#endif
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class GEOAPI TPGeArc2D : public TPGeCurve2D
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{
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DECLARE_RUN_TIME_CLASS(TPGeArc2D)
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public:
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//construct
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TPGeArc2D();
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TPGeArc2D(const TGPoint&pt,double radius,double sA,double cA,bool bUnClockWise=true);
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TPGeArc2D(const TGPoint&sPt,const TGPoint&ePt,double angle);
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TPGeArc2D(const TGPoint&pt0,const TGPoint&pt1,const TGPoint&pt2);
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TPGeArc2D(const TPGeCircle2D& c);
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virtual TPGeCurve2D* GetExtendCurve() const;
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//与起始角的夹角,存在区间[0,centralAngle]
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virtual void Pa2Pt(double pa,TGPoint&pt) const;
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//返回区间[0,2PI)
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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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virtual bool IsClosed() const;
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virtual bool IsClockwise() 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 double Length() const;
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virtual double Area() const;
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virtual double GetMLinePrec() const;
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virtual double GetElev() const;
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virtual TGMLine2D* PLinearize(double paDist=0) const;
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virtual TPGeCurve2D* GetSubCurve(double pa0,double pa1) const;
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//override TGObject2D
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virtual void SetElev(double elev);
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//override TGObject
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virtual bool IsValid() const;
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virtual void TransformBy(const TGMatrix&matrix);
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virtual TGObject * Clone() const;
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virtual bool Intersect(const TGObject&obj,TGObjectList&res) const;
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virtual bool IsInclude(const TGObject&obj) const;
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//测试GR_IN/GR_INSIDE/GR_OUTSIDE/GR_LEFT/GR_RIGHT
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virtual GRelation HitTest(const TGPoint&pt) const;
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virtual bool GetExtend2D(TPGeExtend2D&ext) const;
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//edit
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void Init(const TGPoint&sPt,const TGPoint&ePt,double angle);
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//起点，中间点，终点
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void Init(const TGPoint&pt0,const TGPoint&pt1,const TGPoint&pt2);
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void SetStartAngle(double angle);
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//query
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double GetEndAngle() const;
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TGPoint GetStartPoint() const;
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TGPoint GetEndPoint() const;
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TGPoint GetMidPoint() const;
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public:
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//弧继承所在圆的曲线方向
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TPGeCircle2D circle;
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//[0,2PI),正向弧度或负向弧度
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double startAngle;
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//(0,2PI],终止角与起始角的夹角
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double centralAngle;
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private:
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double GetAnglePrecFromRadius(double dradius)const;
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double GetParaPrecFromLength(double dlength)const;
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bool IsParaInSeg(double dpa,double dprec)const;
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};
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#endif
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