//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TPGeEdge.cpp
// = Version	:   ver2.0
// = Author		:   xlc
// = CreateDate	:   2002-09-09
// = Description:   ÀàµÄ¶¨Òå
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#include "StdAfx.h"
#include "TPGeEdge.h"
#include "TGNode.h"

TPGeEdge::TPGeEdge(TPGeCurve2D*p) : pSeg(p)
{

}

TPGeEdge::~TPGeEdge()
{
	if(pSeg != NULL)
	{
		delete pSeg;
	}
}

TPGeCurve2D* TPGeEdge::FetchEdge()
{
	TPGeCurve2D* p = pSeg;
	pSeg = NULL;
	return p;
}

TGNode* TPGeEdge::EndNode() const
{
	return pNodeEnd;
}

void TPGeEdge::SetNode(TGNode*p1,TGNode*p2)
{
	pNodeStart = p1;
	pNodeEnd = p2;
}

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

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

bool TPGeEdge::FindLoop(TPGeEdgePath&path)
{
	if(pNodeEnd == NULL)
	{
		return false;
	}
	path.AddTail(this);
	return pNodeEnd->FindNode(pNodeStart,path);
}