// ========================================================================================
//	TGeometry.cpp			 	Copyright (C) 2001-2002 Mike Lockwood. All rights reserved.
// ========================================================================================
/*
	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "FWCommon.h"

#include "TGeometry.h"


TPoint	gZeroPoint;
TRect	gZeroRect;

void TRect::UnionWith(const TRect& rect)
{
	if (IsEmpty())
		Set(rect);
	else if (!rect.IsEmpty())
	{
		if (rect.left < left)
			left = rect.left;
		if (rect.right > right)
			right = rect.right;
		if (rect.top < top)
			top = rect.top;
		if (rect.bottom > bottom)
			bottom = rect.bottom;
	}
}


void TRect::IntersectWith(const TRect& rect)
{
	if (rect.IsEmpty())
		SetEmpty();
	else if (!IsEmpty())
	{
		if (rect.left > left)
			left = rect.left;
		if (rect.right < right)
			right = rect.right;
		if (rect.top > top)
			top = rect.top;
		if (rect.bottom < bottom)
			bottom = rect.bottom;
	}
}