210 lines
3.5 KiB
C++
210 lines
3.5 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TPGeCurve3D.cpp
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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: 类的定义
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#include "StdAfx.h"
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#include "TPGeCurve3D.h"
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#include "TPGeFace3D.h"
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#include "TGPoint3D.h"
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IMPLEMENT_RUN_TIME_CLASS1(TPGeCurve3D,"TPGeCurve3D",TGObject3D)
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TPGeCurve3D::~TPGeCurve3D()
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{
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}
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bool TPGeCurve3D::IsInclude(const TGObject&obj) const
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{
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if(IS_CLASS(&obj,TPGeFace3D))
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{
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return false;
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}
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else
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{
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return TGObject3D::IsInclude(obj);
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}
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}
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double TPGeCurve3D::Length() const
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{
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TGObjectList oList;
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double dLength = 0;
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if(Explode(oList))
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{
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for(oList.MoveToFirst();!oList.IsOut();oList.MoveToNext())
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{
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dLength += oList.GetCurCurve3D().Length();
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}
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}
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return dLength;
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}
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bool TPGeCurve3D::IsClosed() const
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{
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TGPoint3D pt0,pt1;
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GetStartPoint(pt0);
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GetEndPoint(pt1);
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return pt0 == pt1;
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}
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bool TPGeCurve3D::IsConnect(const TPGeCurve3D&seg) const
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{
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if(!IsFinite(false) || !seg.IsFinite(true))
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{
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return false;
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}
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TGPoint3D pt0,pt1;
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GetEndPoint(pt0);
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seg.GetStartPoint(pt1);
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return pt0 == pt1;
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}
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void TPGeCurve3D::Split(const TTable<double>&paTable,TGObjectList&res) const
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{
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if(paTable.IsEmpty())
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{
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return;
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}
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if(IsClosed())
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{
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if(paTable.GetLength() == 1)
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{
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res << GetSubCurve(paTable.GetAt(0),paTable.GetAt(0));
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}
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else
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{
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for(long i = 1; i < paTable.GetLength(); i++)
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{
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if(DOWN_ZERO(paTable.GetAt(i - 1) - paTable.GetAt(i)))
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{
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res << GetSubCurve(paTable.GetAt(i - 1),paTable.GetAt(i));
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}
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}
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double last = paTable.GetAt(i - 1);
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if(DOWN_ZERO(last - 1) || UP_ZERO(paTable.GetAt(0)))
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{
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res << GetSubCurve(last,paTable.GetAt(0));
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}
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}
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}
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else
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{
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if(UP_ZERO(paTable.GetAt(0)))
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{
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res << GetSubCurve(0,paTable.GetAt(0));
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}
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for(long i = 1;i < paTable.GetLength();i++)
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{
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if(DOWN_ZERO(paTable.GetAt(i - 1) - paTable.GetAt(i)))
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{
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res << GetSubCurve(paTable.GetAt(i - 1),paTable.GetAt(i));
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}
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}
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if(DOWN_ZERO(paTable.GetAt(i - 1) - 1))
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{
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res << GetSubCurve(paTable.GetAt(i - 1), 1);
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}
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}
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}
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void TPGeCurve3D::GetStartPoint(TGPoint&pt) const
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{
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Pa2Pt(0,pt);
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}
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void TPGeCurve3D::GetEndPoint(TGPoint&pt) const
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{
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Pa2Pt(1,pt);
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}
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void TPGeCurve3D::GetMidPoint(TGPoint&pt) const
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{
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Pa2Pt(0.5,pt);
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}
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bool TPGeCurve3D::IsCurveSeg() const
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{
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return IsFinite(true) && IsFinite(false);
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}
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bool TPGeCurve3D::IsFinite() const
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{
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return IsCurveSeg() || IsClosed();
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}
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bool TPGeCurve3D::IsInfinite() const
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{
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return !IsClosed() && !IsFinite(true) && !IsFinite(false);
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}
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bool TPGeCurve3D::IsFinite(bool bStart) const
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{
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return true;
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}
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bool TPGeCurve3D::IsSelfCross() const
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{
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return false;
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}
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//由曲线参数得到点
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void TPGeCurve3D::Pa2Pt(double pa,TGPoint&pt) const
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{
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}
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//由点得到曲线参数，适用于非自交时!
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void TPGeCurve3D::Pt2Pa(const TGPoint&pt,double&pa) const
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{
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}
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double TPGeCurve3D::Area() const
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{
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return 0;
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}
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//反向
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void TPGeCurve3D::Reverse()
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{
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}
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TGMLine3D* TPGeCurve3D::MLinearize(double paDist/* = 0*/) const
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{
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return NULL;
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}
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//取线型化的默认精度
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double TPGeCurve3D::GetMLinePrec() const
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{
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return 0;
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}
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TPGeCurve3D* TPGeCurve3D::GetSubCurve(double pa0,double pa1) const
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{
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return NULL;
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}
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TGPoint TPGeCurve3D::GetSamplePoint() const
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{
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TGPoint pt;
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GetMidPoint(pt);
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return pt;
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} |