Vertex.h

#ifndef _VERTEX_H_
#define _VERTEX_H_


/*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.

    file    : Vertex.h

*/


#include <qstring.h>




class Vertex
{

public:


  enum State { none, active, passive };

  Vertex(const QString& id, double x, double y);
 
  QString ID() const { return _id; }

  double x() const { return _x; }  
  double y() const { return _y; }

  void write_XML(QTextStream& cout);

  State state;

  int  grad;
  bool used;


private:

  double _x, _y;

  QString _id;

  State _state;

};


#endif

---