332 lines
7.7 KiB
C++
332 lines
7.7 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, SH Software Co. Ltd.
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// = FileName : XCurveSegment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: XCurveSegment类声明
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#ifndef _XCURVESEGMENT_H_
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#define _XCURVESEGMENT_H_
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#ifndef _ENTITY_H_
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#include "Entity.h"
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#endif
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#ifndef _XPOLY2D_H_
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#include "XPoly2D.h"
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#endif
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#ifndef _XPointDir2d_H_
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#include "XPointDir2d.h"
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#endif
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class XPoly2D;
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class GEOAPI XCurveSegment : public XLine
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{
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public:
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XCurveSegment(int flg = LS_FINITE);
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XCurveSegment(const XCurveSegment &src);
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XCurveSegment(const Entity & ent, int flg = LS_FINITE);
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XCurveSegment(const XPoint &spt, const XPoint &ept, ads_real dAng, int flg = LS_FINITE);
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virtual ~XCurveSegment();
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XCurveSegment & operator = (const XLine &ln);
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XCurveSegment & operator = (const XArc &arc);
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XCurveSegment & operator = (const XCircle &cir);
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XCurveSegment & operator = (const XCurveSegment &src);
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bool operator == (const XCurveSegment &src) const;
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//zjq 2009-08-31 增加line,arc的set函数
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XCurveSegment & SetLine(const XPoint& pt1, const XPoint& pt2);
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XCurveSegment & SetArc(const XPoint &spt, const XPoint &ept, ads_real dang);
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XCurveSegment & SetCircle(const XPoint& ptCen,double dRadius);
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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* pSrc);
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virtual int Make(LPCTSTR lay = NULL) const;
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virtual int MakeEntity(const Entity &e);
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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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virtual int GetExtend(XPoint &low, XPoint &up) 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* pCircle, ads_point ptRp1 = NULL, ads_point ptRp2 = NULL) const;
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virtual void TransformBy(ads_matrix mat);
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virtual void SetPoints(const XPoint &ptStart, const XPoint &ptEnd);
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//图形长度，周长
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virtual ads_real GetLength() const;
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virtual XPoint MidPoint() const;
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// 与曲线方向有关的成员
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virtual XArc GetArc() const;
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// 0--左（内）；1－右（外）；2－其他 ---> 枚举,下同
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virtual int OnWhichSide(const XPoint &src) const;
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// 0－左；1－右；2－其他；与上面的区别是，弧段作为有限长，在圆外但在弦的左侧算左
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virtual int OnWhichSide1(const XPoint &src) const;
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// 从端点开始沿曲线走过给定距离的点向量
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virtual int Polar(ads_real nDist, XPointDir2d &res, int bFromStart = 1) const;
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virtual void AsPoly2D(XPoly2D &poly) const;
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virtual ads_real PathArea(XPoint &tmpt) const;
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// 取得指向内部的方向，线和弧不支持圆。 pt--0:start; 1--end
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virtual ads_real IDirection(int pt) const;
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// 曲线上的点pt的方向(切向)
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virtual ads_real Direction(const XPoint &pt) const;
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// 求通过pt点的法向
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virtual ads_real OrthoDirection(const XPoint &pt) const;
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// 求到端点的沿曲线线位移, 在线内距离为正,否则为负, 和Polar配合使用
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// pt如果不在线上的话则先投影
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virtual ads_real PathDistance(const XPoint &pt, int bFromStart = 1) const;
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virtual bool IsDirectionCurve();
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int Is(CurveType t) const;
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int MakeArrow(Entity &) const;
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int ProjectToMe(const XPoint &src, XPoint &res) const;
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int Intersection(const XLine &, ads_point, ads_point) const ;
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int Intersection(const XCurveSegment &, ads_point pt1, ads_point pt2) const;
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int GetSubSegment(const XPoint &ptloc, ads_real dchordLen, XCurveSegment &ptres) const;
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//Wcs到展开坐标系
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XPoint Wcs2Ecs(XPoint pt) const;
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//展开坐标系到Wcs
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XPoint Ecs2Wcs(XPoint pt) const;
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void Wcs2Ecs(const XPoly2D &polyWcs, XPoly2D &polyEcs) const;
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void Ecs2Wcs(const XPoly2D &polyEcs, XPoly2D &polyWcs) const;
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XCircle GetCircle() const;
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XLine GetLine() const;
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//点到曲线的距离, 负数为内/左侧
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double GetDist2Me(XPoint ptMid) const;
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double GetChordLength(double nArcLen) const;
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CurveType GetCurveType() const;
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static resbuf *Mask(LPCTSTR lay = NULL);
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resbuf * AsFence(int nCirDiv = 20) const;
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AcDbCurve *AsAcDbCurve() const;
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XCurveSegment Offset(ads_real dDist, int nflg) const;
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XCurveSegment Offset(int lr, ads_real dDist, int nflg) const;
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double GetBulge() const;
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void SetBulge(const double dBulge);
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public:
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ads_real m_dBulge;
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};
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inline bool XCurveSegment::operator == (const XCurveSegment &src) const
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{
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bool bRet = false;
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if (src.GetCurveType() != GetCurveType())
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{
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bRet = false;
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}
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else if (Is(CURVE_LINE))
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{
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bRet = (GetLine() == src.GetLine());
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}
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else if (Is(CURVE_ARC))
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{
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bRet = (GetArc() == src.GetArc());
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}
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else
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{
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bRet = (GetCircle() == src.GetCircle());
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}
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return bRet;
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}
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inline int XCurveSegment::Is(CurveType t) const
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{
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double dBulge = fabs(GetBulge());
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return ((dBulge < 1E-6 && t == CURVE_LINE)
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|| (fabs(2.0 * PI - dBulge) < 1E-5 && t == CURVE_CIRCLE)
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|| (dBulge > 1E-6 && dBulge < 2.0 * PI - 1E-6 && t == CURVE_ARC));
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}
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inline CurveType XCurveSegment::GetCurveType() const
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{
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CurveType t;
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double dBulge = fabs(GetBulge());
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if (dBulge < 1E-6)
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{
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t = CURVE_LINE;
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}
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else if (fabs(2.0 * PI - dBulge) < 1E-5)
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{
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t = CURVE_CIRCLE;
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}
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else
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{
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t = CURVE_ARC;
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}
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return t;
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}
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inline XLine XCurveSegment::GetLine() const
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{
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return *this;
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}
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inline double XCurveSegment::GetChordLength(double nArcLen) const
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{
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double nRes = nArcLen;
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if (Is(CURVE_ARC))
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{
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XArc ar = GetArc();
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double dRadius = ar.GetRadius();
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nRes = 2.0 * dRadius * sin(nArcLen / 2.0 / dRadius);
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}
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return fabs(nRes);
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}
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inline int XCurveSegment::HitTest2d(const XPoint &ptTest) const
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{
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CurveType t = GetCurveType();
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int nHitFlag = 0;
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if (t == CURVE_LINE)
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{
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nHitFlag = GetLine().HitTest2d(ptTest);
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}
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else if (t == CURVE_ARC)
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{
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nHitFlag = GetArc().HitTest2d(ptTest);
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}
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else if (t == CURVE_CIRCLE)
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{
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nHitFlag = GetCircle().HitTest2d(ptTest);
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}
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return nHitFlag;
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}
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inline int XCurveSegment::MakeEntity(const Entity &e)
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{
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if (Is(CURVE_LINE))
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{
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return GetLine().MakeEntity(&e);
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}
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if (Is(CURVE_ARC))
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{
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return GetArc().MakeEntity(&e);
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}
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if (Is(CURVE_CIRCLE))
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{
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return GetCircle().MakeEntity(&e);
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}
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return RTERROR;
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}
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inline int XCurveSegment::GetExtend(XPoint &lowPt, XPoint &upPt) const
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{
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if (Is(CURVE_LINE))
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{
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return XLine::GetExtend(lowPt, upPt);
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}
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else if (Is(CURVE_ARC))
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{
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return GetArc().GetExtend(lowPt, upPt);
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}
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else
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{
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return GetCircle().GetExtend(lowPt, upPt);
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}
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}
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inline XCurveSegment & XCurveSegment::operator = (const XCurveSegment &src)
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{
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if (this != &src)
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{
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m_nFlag = src.m_nFlag;
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m_startPoint = src.m_startPoint;
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m_endPoint = src.m_endPoint;
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m_dBulge = src.m_dBulge;
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}
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return *this;
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}
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inline XCurveSegment & XCurveSegment::operator = (const XLine &ln)
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{
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m_nFlag = ln.m_nFlag;
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m_startPoint = ln.m_startPoint;
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m_endPoint = ln.m_endPoint;
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m_dBulge = 0.0;
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return *this;
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}
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inline XCurveSegment & XCurveSegment::operator = (const XArc &arc)
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{
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//SetLineFlag(LS_FINITE);
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m_nFlag = LS_FINITE;
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XPoint ptStart, ptEnd;
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XPoint ptCen = arc.GetCenterPt();
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double dRadius = arc.GetRadius();
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ads_polar(ptCen, arc.GetStarAngle(), dRadius, ptStart);
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ads_polar(ptCen, arc.GetEndAngle(), dRadius, ptEnd);
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m_startPoint = ptStart;
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m_endPoint = ptEnd;
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m_dBulge = arc.Bulge();
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return *this;
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}
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inline XCurveSegment & XCurveSegment::operator = (const XCircle &cir)
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{
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XPoint ptStart, ptEnd;
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XPoint ptCen = cir.GetCenterPt();
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double dRadius = cir.GetRadius();
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ads_polar(ptCen, 0.0, dRadius, ptStart);
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ads_polar(ptCen, PI, dRadius, ptEnd);
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m_startPoint = ptStart;
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m_endPoint = ptEnd;
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m_dBulge = 2.0 * PI;
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return *this;
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}
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#endif
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