//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGTriangle2D 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGTriangle2D 定义
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#include "StdAfx.h"
#include "TGTriangle2D.h"

TGTriangle2D::TGTriangle2D():TGNPolygon2D(3)
{

}

TGTriangle2D::~TGTriangle2D()
{

}

bool TGTriangle2D::IsValid()const
{
	return TGPolygon2D::IsValid() && mLine.GetVertexNum() == 3;
}

bool TGTriangle2D::Explode(TGObjectList&res)const
{
	return false;
}


TGObject* TGTriangle2D::Clone()const
{
	return new TGTriangle2D(*this);
}

TGTriangle2D::TGTriangle2D(const TGPoint&pt0,const TGPoint&pt1,const TGPoint&pt2,bool bCheck):TGNPolygon2D(3)
{
	mLine[0]=pt0;
	mLine[1]=pt1;
	mLine[2]=pt2;
	if(bCheck&&mLine.IsClockwise())
	{
		mLine.Reverse();
	}
}