47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, SH Software Co. Ltd.
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// = FileName : CBArc.h
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// = Version : ver2.0
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// = Author : zjq
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// = CreateDate : 2002-09-09
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// = Description: 类的声明 圆弧描述，坐标系：UCS
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#ifndef _BARC_H_
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#define _BARC_H_
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class GEOAPI CBArc
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{
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public:
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CBArc();
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CBArc(AcGePoint3d& cen,double radius,double startAng,double centAng);
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virtual ~CBArc();
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CBArc& operator = (const CBArc& arc);
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//返回相对于起点沿圆弧方向s坐标处的点，S>=0
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AcGePoint3d GetPtAtS(double s);
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//返回相对于起点沿圆弧方向detaAng角度处的点
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AcGePoint3d GetPtAtAngle(double detaAng) const;
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AcGePoint3d GetStartPoint() const; //取起点
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AcGePoint3d GetEndPoint() const; //取尾点
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double Length();
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double GetMinX() const; //最小X值
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double GetMaxX() const; //最大X值
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double GetMinY() const; //最小Y值
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double GetMaxY() const; //最大Y值
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public:
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double m_R; //半径
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double m_startAngle; //起始点角度
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double m_centAngle; //圆心角,>0:逆时针；<0：顺时针
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AcGePoint3d m_centPt; //圆心
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AcGePoint3d m_startPt; //起点坐标
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AcGePoint3d m_endPt; //终点坐标
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};
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#endif
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