//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGMesh3D Àà
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGMesh3D ¶¨Òå
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#include "StdAfx.h"
#include "TGMesh3D.h"
#include "TGMCurve3D.h"
#include "TPGeCurve3D.h"


TGMesh3D::~TGMesh3D()
{
	
}

bool TGMesh3D::operator>(const TGMesh3D&)const
{
	return false;
}

bool TGMesh3D::operator<(const TGMesh3D&)const
{
	return false;
}

TPGeCurve3D* TGMesh3D::CreateCurve()
{
	if(GetLength() == 1)
	{
		return new TGMCurve3D(*GetAt(0)->GetCurve());
	}

	TGMCurve3D* pCurve = new TGMCurve3D;
	const TGMeshNode3D*pStartNode;
	const TGMeshEdge3D*pEdge0 = GetAt(0);
	if(pEdge0->m_pMesh1 == this)
	{
		pStartNode = pEdge0->GetNode(1);
	}
	else 
	{
		pStartNode = pEdge0->GetNode(2);
	}
	for(MoveToFirst();!IsOut();MoveToNext())
	{
		TPGeCurve3D* pSeg = (TPGeCurve3D*)(GetCurData()->GetCurve()->Clone());
		if(GetCurData()->GetNode(1) != pStartNode)
		{
			pSeg->Reverse();
			pStartNode = GetCurData()->GetNode(1);
		}
		else
		{
			pStartNode = GetCurData()->GetNode(2);
		}

		pCurve->AddTail(pSeg);
	}
	return pCurve;
}

void TGMesh3D::ExplodeSelfCross(TPDList<TGMesh3D> &lstMesh)
{
	TDualPtrList<const TGMeshNode3D*> lstNode;

	const TGMeshNode3D*pStartNode;
	const TGMeshEdge3D*pEdge0 = GetAt(0);
	if(pEdge0->m_pMesh1 == this)
	{
		pStartNode = pEdge0->GetNode(1);
	}
	else 
	{
		pStartNode = pEdge0->GetNode(2);
	}

	for(MoveToFirst();!IsOut();MoveToNext())
	{
		long index = lstNode.Find(pStartNode);
		if(index == NOT_FOUND)
		{
			lstNode<<pStartNode;
		}
		else
		{
			TGMesh3D tail;
			SplitAtCur(tail);

			TGMesh3D *pMesh = new TGMesh3D;
			SplitAt(index,*pMesh);
			for(pMesh->MoveToFirst();!pMesh->IsOut();pMesh->MoveToNext())
			{
				TGMeshEdge3D *pEdge = pMesh->GetCurData();
				if(pEdge->m_pMesh1 == this)
				{
					pEdge->m_pMesh1 = pMesh;
				}
				else
				{
					pEdge->m_pMesh2 = pMesh;
				}
			}

			lstMesh<<pMesh;

			Conbine(tail);

			lstNode.Clear();
			ExplodeSelfCross(lstMesh);
			break;
		}

		if(GetCurData()->GetNode(1) != pStartNode)
		{
			pStartNode = GetCurData()->GetNode(1);
		}
		else
		{
			pStartNode = GetCurData()->GetNode(2);
		}

	}
}