//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TPtList2.cpp
// = Version	:   ver2.0
// = Author		:   xlc
// = CreateDate	:   2002-09-09
// = Description:   类的定义
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#include "StdAfx.h"
#include "TPtList2.h"

TPtList2::TPtList2()
	: pa(0)
{

}

TPtList2::TPtList2(const TGPoint&pt,double PA)
	: TPtList1(pt),pa(PA)
{

}

TPtList2::TPtList2(const TGMLine2D& mline)
	: pa(0)
{
	TPtList2*p = this;
	p->Data() = mline.GetVertex(0);
	for(long i = 1; i < mline.GetVertexNum(); i++)
	{
		p->CNNext(new TPtList2(mline.GetVertex(i)));
		p = p->Next();
	}
	if(mline.IsClosed())
	{
		p->CNNext(this);
	}
}

TPtList2::~TPtList2()
{

}

TPtList2 *TPtList2::Next()const
{
	return (TPtList2*)(TPtList1::Next());
}

TPtList2 *TPtList2::GetTail()const
{
	return (TPtList2*)(TPtList1::GetTail());
}

bool TPtList2::operator ==(const TPtList2&pt)const
{
	double d=pa-pt.pa;
	return EQUAL_ZERO(d);
}

bool TPtList2::operator !=(const TPtList2&pt)const
{
	return !(*this==pt);
}

bool TPtList2::operator >(const TPtList2&pt)const
{
	return UP_ZERO(pa-pt.pa);
}

bool TPtList2::operator <(const TPtList2&pt)const
{
	return DOWN_ZERO(pa-pt.pa);
}