198 lines
3.5 KiB
C++
198 lines
3.5 KiB
C++
//-------------------------------------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TGMeshEdge 类
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// = Version : ver2.0
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// = Author : wlw
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// = CreateDate : 2002-09-09
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// = Description: TGMeshEdge 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 "TGMeshEdge.h"
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#include "TGMesh.h"
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#include "TGMeshNode.h"
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TGMeshEdge::TGMeshEdge(const TPGeCurve2D* pCurve,TGMeshNode* pNode1,TGMeshNode*pNode2)
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:m_pCurve(pCurve),m_pNode1(pNode1),m_pNode2(pNode2),m_pMesh1(NULL),m_pMesh2(NULL)
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{
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if (m_pNode1 != NULL)
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{
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m_pNode1->AppendEdge(this);
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}
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if (m_pNode2 != NULL)
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{
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m_pNode2->AppendEdge(this);
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}
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}
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TGMeshEdge::~TGMeshEdge()
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{
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}
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const TPGeCurve2D* TGMeshEdge::GetCurve() const
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{
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return m_pCurve;
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}
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const TGMeshNode* TGMeshEdge::GetNode(int i) const
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{
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return i == 1 ? m_pNode1 : m_pNode2;
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}
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bool TGMeshEdge::IsLine() const
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{
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return IS_CLASS(m_pCurve,TPGeGLine2D);
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}
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TGMeshNode* TGMeshEdge::GetNextNode(TGMeshNode *pNode) const
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{
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return pNode == m_pNode1 ? m_pNode2 : m_pNode1;
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}
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bool TGMeshEdge::operator > (const TGMeshEdge &edge) const
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{
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return UP_ZEROA(m_fAngle-edge.m_fAngle);
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}
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bool TGMeshEdge::operator < (const TGMeshEdge&edge) const
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{
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return edge > *this;
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}
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TGMeshEdge* TGMeshEdge::FindNextEdge(TGMeshNode* &pNodeStart, TGMesh *pMesh)
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{
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if (pNodeStart == m_pNode1)
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{
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AddFlag(VISITED12);
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m_pMesh1 = pMesh;
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pNodeStart = m_pNode2;
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}
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else
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{
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AddFlag(VISITED21);
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m_pMesh2 = pMesh;
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pNodeStart = m_pNode1;
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}
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if (pNodeStart == NULL)
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{
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return NULL;
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}
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return pNodeStart->FindNextEdge(this);
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}
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TGMeshEdge* TGMeshEdge::FindPreEdge(TGMeshNode* &pNodeStart,TGMesh *pMesh)
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{
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if (pNodeStart == m_pNode1)
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{
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AddFlag(VISITED21);
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m_pMesh2 = pMesh;
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pNodeStart = m_pNode2;
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}
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else
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{
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m_pMesh1 = pMesh;
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AddFlag(VISITED12);
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pNodeStart = m_pNode1;
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}
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if (pNodeStart == NULL)
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{
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return NULL;
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}
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return pNodeStart->FindPreEdge(this);
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}
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TGMeshEdge* TGMeshEdge::FindNextSDEdge(TGMesh *pMesh)
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{
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AddFlag(VISITED12);
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m_pMesh1 = pMesh;
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if (m_pNode2 == NULL)
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{
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return NULL;
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}
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return m_pNode2->FindNextSDEdge(this);
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}
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TGMeshEdge* TGMeshEdge::FindPreSDEdge(TGMesh *pMesh)
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{
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AddFlag(VISITED12);
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m_pMesh1 = pMesh;
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if (m_pNode1 == NULL)
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{
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return NULL;
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}
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return m_pNode1->FindPreSDEdge(this);
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}
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TGMesh* TGMeshEdge::FindMesh(int i)
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{
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TGMesh *pMesh = new TGMesh;
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TGMeshNode* pNodeStart;
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if (i == 1)
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{
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pNodeStart = m_pNode1;
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m_pMesh1 = pMesh;
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}
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else
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{
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pNodeStart = m_pNode2;
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m_pMesh2 = pMesh;
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}
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TGMeshEdge*pEdge = this;
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do
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{
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pMesh->AddTail(pEdge);
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pEdge = pEdge->FindNextEdge(pNodeStart,pMesh);
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}while(pEdge != this && pEdge != NULL);
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if (pEdge == NULL)
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{
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pNodeStart = i == 1 ? m_pNode2 : m_pNode1;
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TGMeshEdge*pEdge = this;
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while(true)
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{
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pEdge = pEdge->FindPreEdge(pNodeStart,pMesh);
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if (pEdge == NULL)
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{
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break;
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}
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pMesh->InsertHead(pEdge);
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}
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}
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return pMesh;
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}
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TGMesh* TGMeshEdge::FindSDMesh()
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{
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TGMesh *pMesh = new TGMesh;
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m_pMesh1 = pMesh;
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TGMeshEdge*pEdge = this;
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do
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{
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pMesh->AddTail(pEdge);
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pEdge = pEdge->FindNextSDEdge(pMesh);
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}while(pEdge != this && pEdge != NULL);
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if (pEdge == NULL)
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{
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TGMeshEdge*pEdge = this;
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while(true)
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{
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pEdge = pEdge->FindPreSDEdge(pMesh);
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if (pEdge == NULL)
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{
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break;
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}
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pMesh->InsertHead(pEdge);
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}
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}
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return pMesh;
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}
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