156 lines
3.9 KiB
C++
156 lines
3.9 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, SH Software Co. Ltd.
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// = FileName : XArc弧类
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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: XArc类声明
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#ifndef _XARC_H_
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#define _XARC_H_
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#ifndef _XCIRCLE_H_
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#include "XCircle.h"
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#endif
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#ifndef _XSECTOR_H_
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#include "XSector.h"
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#endif
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#ifndef _XPOINT_H_
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#include "XPoint.h"
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#endif
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class Entity;
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class GEOAPI XArc : public XCircle, public XSector
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{
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public :
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XArc();
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XArc(const XArc &src);
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XArc(const Entity &aCircle);
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XArc(const Entity &aArc, ads_matrix mat);
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XArc(const XPoint &spt, const XPoint &ept, ads_real dang);
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XArc(const XPoint &ptStart, const XPoint &pt2, const XPoint &ptEnd);
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XArc(ads_point ptcenter, double dradius, double ptstartAngle, double ptendAngle);
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virtual ~XArc();
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virtual bool IsKindOf(TEntityId entType) const;
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virtual TEntityId Type() const;
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virtual void CopyFrom(const XEntity* pImpSrc);
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virtual int Make(const TCHAR *szlay = NULL) const;
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virtual int Modify(const Entity* pEnt) const;
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virtual int GetExtend(ads_point lowPt, ads_point upPt) const;
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virtual int MakeEntity(const Entity* pEnt) const;
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virtual int GetSubArc(const XPoint &ptloc, ads_real dchordLen, XArc &arcRes) const;
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//图形长度，周长
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virtual ads_real GetLength() const;
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XArc& operator = (const XSector &src);
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XArc& operator = (const XArc &src);
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bool operator == (const XArc &src) const;
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int operator ! () const;
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virtual int HitTest2d(const XPoint &ptTest) const;
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virtual int OSnap(int nMode, XPoint &ptPick) const;
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bool Set(const XPoint &spt, const XPoint &ept, ads_real dang);
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bool Set(const XPoint &ptStart, const XPoint &ptOn, const XPoint &ptEnd);
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void SetAngleByPoints(const XPoint &ptStart, const XPoint &ptEnd);
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void GetStartPoint(XPoint &ptStart) const;
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void GetEndPoint(XPoint &ptEnd) const;
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void MidPoint(XPoint &ptres) const;
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XPoint MidPoint() const;
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//求弦长
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ads_real ChordLength() const;
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// 扇形面积
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ads_real Area() const;
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//起点到终点的积分面积
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ads_real PathArea() const;
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XArc Offset(ads_real dist) const;
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virtual void TransUCS(ads_matrix mat);
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//$direction
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ads_real IDirection(int pt) const;
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ads_real ODirection(int pt) const;
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virtual int Intersection(const XLine* pLine, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;
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virtual int Intersection(const XArc* pArc, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;
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virtual int Intersection(const XCircle* pCir, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;
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ads_real * SelectNear(ads_point pt1, ads_point pt2) const;
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int PtOnArc(const XPoint &pt) const;
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};
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inline XArc& XArc::operator = (const XSector &src)
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{
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m_dstartAngle = src.m_dstartAngle;
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m_dendAngle = src.m_dendAngle;
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return *this;
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}
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inline XArc& XArc::operator = (const XArc &src)
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{
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if (this != &src)
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{
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m_dstartAngle = src.m_dstartAngle;
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m_dendAngle = src.m_dendAngle;
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m_ptCenter = src.m_ptCenter;
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m_dRadius = src.m_dRadius;
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}
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return *this;
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}
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inline int XArc::operator ! () const
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{
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return (XCircle::operator !() || GetLength() < XGeLib::_DIST_SNAP);
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}
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inline bool XArc::operator == (const XArc &src) const
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{
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return (XCircle::operator == (src) && XSector::operator == (src));
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}
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inline XArc XArc::Offset(ads_real dist) const
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{
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ads_real r = m_dRadius + dist;
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if (r < XGeLib::_DIST_SNAP)
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{
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r = 0;
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}
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return XArc(m_ptCenter, r, m_dstartAngle, m_dendAngle);
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}
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inline ads_real XArc::GetLength() const
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{
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return Bulge() * m_dRadius;
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}
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inline ads_real XArc::ChordLength() const
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{
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return fabs(2.0 * m_dRadius * sin(Bulge() / 2.0));
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}
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inline void XArc::MidPoint(XPoint &ptres) const
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{
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ads_polar(m_ptCenter, MidAngle(), m_dRadius, ptres);
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}
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inline XPoint XArc::MidPoint() const
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{
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XPoint ptres;
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ads_polar(m_ptCenter, MidAngle(), m_dRadius, ptres);
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return ptres;
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}
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#endif
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