104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TPGeCurve3D.h
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// = Version : ver2.0
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// = Author : xlc
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// = CreateDate : 2002-09-09
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// = Description: 类的声明 空间有向连续参数曲线,起点参数0,如果有终点，终点参数为1
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#ifndef _TPGECURVE3D_H_
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#define _TPGECURVE3D_H_
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#ifndef _TGOBJECT3D_H_
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#include "TGObject3D.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 _TGOBJECT_H_
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#include "TGObject.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 _TGOBJECTLIST_H_
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#include "TGObjectList.h"
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#endif
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class TGMLine3D;
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class GEOAPI TPGeCurve3D : public TGObject3D
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{
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DECLARE_RUN_TIME_CLASS(TPGeCurve3D)
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public:
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virtual ~TPGeCurve3D();
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virtual void GetStartPoint(TGPoint& pt) const;
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virtual void GetEndPoint(TGPoint& pt) const;
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//是否封闭曲线,封闭曲线一定是有限曲线
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virtual bool IsClosed() const;
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//是否有起点或终点
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virtual bool IsFinite(bool bStart) const;
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//存在重复子集
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virtual bool IsSelfCross() const;
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//由曲线参数得到点
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virtual void Pa2Pt(double pa,TGPoint& pt) const;
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//由点得到曲线参数，适用于非自交时!
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virtual void Pt2Pa(const TGPoint& pt,double& pa) const;
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//只适用于平面封闭不自交曲线
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virtual double Area() const;
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//用于有限曲线
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virtual double Length() const;
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//反向
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virtual void Reverse();
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//有限曲线,如果paDist<=0,则使用该实体默认精度
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virtual TGMLine3D* MLinearize(double paDist = 0) const;
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//取线型化的默认精度
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virtual double GetMLinePrec() const;
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virtual TPGeCurve3D* GetSubCurve(double pa0,double pa1) const;
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//取同曲线方向的子曲线,pa0,pa1必须有效,不封闭时必须pa1>pa0,封闭时pa0==pa1表示一点切割
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virtual void Split(const TTable<double> & paTable,TGObjectList& res) const;
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//按参数表分解曲线,paTable为有序表,参数表中参数必须有效!允许冗余参数
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virtual TGPoint GetSamplePoint() const;
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virtual bool IsInclude(const TGObject& obj) const;
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void GetMidPoint(TGPoint& pt) const;
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//两段曲线是否可以连接,终点与seg的起点相同
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bool IsConnect(const TPGeCurve3D& seg) const;
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//是否有两端点
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bool IsCurveSeg() const;
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//有限曲线(封闭或是曲线段)
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bool IsFinite() const;
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//完全无限曲线
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bool IsInfinite() const;
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};
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#endif |