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

TGNode::TGNode()
{

}

TGNode::TGNode(const TGPoint&pt)
	: TGPoint2D(pt)
{

}

TGNode::~TGNode()
{
	
}


bool TGNode::operator ==(const TGPoint&pt)const
{
	return TGPoint2D::operator==(pt);
}

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

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

bool TGNode::FindNode(TGNode*pNodeTo,TPGeEdgePath&path)
{
	AddFlag(LOCKED);
	for(MoveToFirst();!IsOut();MoveToNext())
	{
		TPGeEdge*pEdge=GetCurData();
		if(pEdge->IsNot(LOCKED))
		{
			pEdge->AddFlag(LOCKED);
			path.AddTail(pEdge);

			TGNode*pNode=pEdge->EndNode();
			if(pNode==pNodeTo || (pNode!=NULL&&pNode->IsNot(LOCKED)&&pNode->FindNode(pNodeTo,path)))
			{
				break;
			}

			path.DelTail();
			pEdge->RemoveFlag(LOCKED);
		}
	}
	RemoveFlag(LOCKED);
	return !IsOut();
}