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- // $Id: BoxRegion.h,v 1.11 1998/03/25 12:42:28 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>.
-
- #ifndef _DDD_BoxRegion_h
- #define _DDD_BoxRegion_h
-
- #ifdef __GNUG__
- #pragma interface
- #endif
-
-
- // A BoxRegion is a rectangular area which has an ORIGIN and a SPACE.
-
- #include <iostream.h>
- #include "misc.h"
- #include "BoxPoint.h"
- #include "BoxSize.h"
- #include "bool.h"
- #include "BoxD.h"
- #include "BoxC.h"
-
- class BoxRegion {
- private:
- BoxPoint _origin;
- BoxSize _space;
-
- public:
- // Constructors
- BoxRegion(const BoxPoint& o, const BoxSize& s)
- : _origin(o), _space(s)
- {}
-
- BoxRegion(const BoxPoint& o)
- : _origin(o), _space()
- {}
-
- BoxRegion()
- : _origin(), _space()
- {}
-
- BoxRegion(const BoxRegion& r):
- _origin(r._origin), _space(r._space)
- {}
-
- // Resources
- BoxPoint& origin() { return _origin; }
- BoxCoordinate& origin(BoxDimension d) { return _origin[d]; }
- BoxSize& space() { return _space; }
- BoxCoordinate& space(BoxDimension d) { return _space[d]; }
-
- const BoxPoint& origin() const { return _origin; }
- const BoxCoordinate& origin(BoxDimension d) const { return _origin[d]; }
- const BoxSize& space() const { return _space; }
- const BoxCoordinate& space(BoxDimension d) const { return _space[d]; }
-
- // Comparison
- bool operator == (const BoxRegion& r) const
- { return origin() == r.origin() && space() == r.space(); }
- bool operator != (const BoxRegion& r) const
- { return origin() != r.origin() || space() != r.space(); }
-
- // Check if BoxRegion is (partially) contained in R
- bool operator <= (const BoxRegion& r) const
- {
- for (BoxDimension d = X; d <= Y; d++)
- if (r.origin(d) >= origin(d) + space(d) ||
- origin(d) >= r.origin(d) + r.space(d))
- return false;
-
- return true;
- }
-
- // Rectangular intersection of two regions
- BoxRegion operator & (const BoxRegion& r) const;
-
- // Rectangular union of two regions
- BoxRegion operator | (const BoxRegion& r) const;
-
- // Check if region is empty
- bool isEmpty() const
- {
- return space() <= BoxSize(0,0);
- }
-
- // Debugging
- friend ostream& operator << (ostream& s, const BoxRegion& r);
- };
-
- // Check if P is contained in R
- inline bool operator <= (const BoxPoint& p, const BoxRegion& r)
- {
- for (BoxDimension d = X; d <= Y; d++)
- if (p[d] < r.origin(d) || p[d] >= r.origin(d) + r.space(d))
- return false;
-
- return true;
- }
-
- #endif // _DDD_BoxRegion_h
- // DON'T ADD ANYTHING BEHIND THIS #endif
-