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ArcGraphE.h
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C/C++ Source or Header
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1998-08-03
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// $Id: ArcGraphE.h,v 1.8 1998/08/03 11:15:28 zeller Exp $ -*- C++ -*-
// Arc edges
// Copyright (C) 1997 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_ArcGraphEdge_h
#define _DDD_ArcGraphEdge_h
#ifdef __GNUG__
#pragma interface
#endif
#include "LineGraphE.h"
class ArcGraphEdge: public LineGraphEdge {
public:
DECLARE_TYPE_INFO
protected:
// Copy Constructor
ArcGraphEdge(const ArcGraphEdge& edge)
: LineGraphEdge(edge)
{}
// Draw line (or arc).
void drawLine(Widget w,
const BoxRegion& exposed,
const GraphGC& gc) const;
// Compute the center of the arc enclosing P1, P2, and P3.
// Return false iff P1, P2, and P3 form a line (i.e. there is no arc)
static bool center(const BoxPoint& p1, const BoxPoint& p2,
const BoxPoint& p3, double& x, double& y);
// Joint function for drawing and printing
void makeLine(Widget w,
const BoxRegion& exposed,
ostream& os,
const GraphGC& gc) const;
public:
// Constructor
ArcGraphEdge(GraphNode *from, GraphNode *to, EdgeAnnotation *ann = 0)
: LineGraphEdge(from, to, ann)
{}
// Destructor
virtual ~ArcGraphEdge() {}
// Printing
void _print(ostream& os, const GraphGC &gc) const;
// Duplicator
GraphEdge *dup() const
{
return new ArcGraphEdge(*this);
}
};
#endif // _DDD_ArcGraphEdge_h
// DON'T ADD ANYTHING BEHIND THIS #endif