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- // $Id: BoxRegion.C,v 1.9 1998/11/23 17:43:17 zeller Exp $ -*- C++ -*-
- // BoxRegion class
-
- // Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD 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.
- //
- // DDD 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 DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- char BoxRegion_rcsid[] =
- "$Id: BoxRegion.C,v 1.9 1998/11/23 17:43:17 zeller Exp $";
-
- #ifdef __GNUG__
- #pragma implementation
- #endif
-
- #include "BoxRegion.h"
-
- // Compute intersection of two regions
- BoxRegion BoxRegion::operator & (const BoxRegion& r) const
- {
- if (!origin().isValid())
- return r;
- if (!r.origin().isValid())
- return *this;
-
- BoxPoint nw_corner(max(origin(X), r.origin(X)),
- max(origin(Y), r.origin(Y)));
- BoxPoint se_corner(min(origin(X) + space(X), r.origin(X) + r.space(X)),
- min(origin(Y) + space(Y), r.origin(Y) + r.space(Y)));
-
- return BoxRegion(nw_corner, BoxSize(se_corner - nw_corner));
- }
-
- // Compute union of two regions
- BoxRegion BoxRegion::operator | (const BoxRegion& r) const
- {
- if (!origin().isValid())
- return r;
- if (!r.origin().isValid())
- return *this;
-
- BoxPoint nw_corner(min(origin(X), r.origin(X)),
- min(origin(Y), r.origin(Y)));
- BoxPoint se_corner(max(origin(X) + space(X), r.origin(X) + r.space(X)),
- max(origin(Y) + space(Y), r.origin(Y) + r.space(Y)));
-
- return BoxRegion(nw_corner, BoxSize(se_corner - nw_corner));
- }
-
- // Dump
- ostream& operator << (ostream& s, const BoxRegion& r)
- {
- return s << r.origin() << r.space();
- }
-