/*
 *  Open BEAGLE
 *  Copyright (C) 2001-2004 by Christian Gagne and Marc Parizeau
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *  Laboratoire de Vision et Systemes Numeriques
 *  Departement de genie electrique et de genie informatique
 *  Universite Laval, Quebec, Canada, G1V 4J7
 *  http://vision.gel.ulaval.ca
 *
 */

/*!
 *  \file   beagle/FitnessSimple.hpp
 *  \brief  Definition of the class FitnessSimple.
 *  \author Christian Gagne
 *  \author Marc Parizeau
 *  $Revision: 1.2 $
 *  $Date: 2004/01/15 21:08:57 $
 */

#ifndef Beagle_FitnessSimple_hpp
#define Beagle_FitnessSimple_hpp

#include "beagle/config.hpp"
#include "beagle/macros.hpp"
#include "beagle/Object.hpp"
#include "beagle/AllocatorT.hpp"
#include "beagle/PointerT.hpp"
#include "beagle/ContainerT.hpp"
#include "beagle/Stats.hpp"
#include "beagle/Fitness.hpp"

namespace Beagle {

/*!
 *  \class FitnessSimple beagle/FitnessSimple.hpp "beagle/FitnessSimple.hpp"
 *  \brief Simple fitness class, made of a unique measure.
 *  \ingroup ECF
 *  \ingroup FitStats
 */
class FitnessSimple : public Fitness {

public:

  //! FitnessSimple allocator type.
  typedef AllocatorT<FitnessSimple,Fitness::Alloc>
          Alloc;
  //! FitnessSimple handle type.
  typedef PointerT<FitnessSimple,Fitness::Handle>
          Handle;
  //! FitnessSimple bag type.
  typedef ContainerT<FitnessSimple,Fitness::Bag>
          Bag;

           FitnessSimple();
  explicit FitnessSimple(float inFitness);
  virtual ~FitnessSimple() { }

  virtual bool isEqual(const Object& inRightObj) const;
  virtual bool isLess(const Object& inRightObj) const;
  virtual void read(XMLNode::Handle& inNode);
  virtual void setValue(float inFitness);
  virtual void write(XMLStreamer& ioStreamer) const;

  /*!
   *  \brief Return fitness value.
   *  \return Fitness value.
   */
  inline float getValue() const
  {
    return mFitness;
  }
  
protected:
  float mFitness;  //!< Unique measure of the fitness.

};

}

#endif // Beagle_FitnessSimple_hpp

