moeoBinaryMetricSavingUpdater.h

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

//-----------------------------------------------------------------------------
// moeoBinaryMetricSavingUpdater.h
// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2006
/*
    This library...

    Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
 */
//-----------------------------------------------------------------------------

#ifndef MOEOBINARYMETRICSAVINGUPDATER_H_
#define MOEOBINARYMETRICSAVINGUPDATER_H_

#include <fstream>
#include <string>
#include <eoPop.h>
#include <utils/eoUpdater.h>
#include <metric/moeoMetric.h>

template < class EOT > class moeoBinaryMetricSavingUpdater:public eoUpdater
{
public:

  typedef typename EOT::Fitness EOFitness;

  moeoBinaryMetricSavingUpdater (moeoVectorVsVectorBM < EOT, double >&_metric,
                                 const eoPop < EOT > &_pop,
                                 std::string _filename):metric (_metric),
    pop (_pop), filename (_filename), counter (1)
  {
  }

  void operator  () ()
  {
    if (pop.size ())
      {
        if (firstGen)
          {
            firstGen = false;
          }
        else
          {
            // creation of the two Pareto sets                              
            std::vector < EOFitness > from;
            std::vector < EOFitness > to;
            for (unsigned i = 0; i < pop.size (); i++)
              from.push_back (pop[i].fitness ());
            for (unsigned i = 0; i < oldPop.size (); i++)
              to.push_back (oldPop[i].fitness ());
            // writing the result into the file
            std::ofstream f (filename.c_str (), std::ios::app);
            f << counter++ << ' ' << metric (from, to) << std::endl;
            f.close ();
          }
        oldPop = pop;
      }
  }

private:

  moeoVectorVsVectorBM < EOT, double >&metric;
  const eoPop < EOT > &pop;
  eoPop < EOT > oldPop;
  std::string filename;
  bool firstGen;
  unsigned counter;

};

#endif /*MOEOBINARYMETRICSAVINGUPDATER_H_ */

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