moeoEuclideanDistance.h

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

//-----------------------------------------------------------------------------
// moeoEuclideanDistance.h
// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
/*
    This library...

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

#ifndef MOEOEUCLIDEANDISTANCE_H_
#define MOEOEUCLIDEANDISTANCE_H_

#include <math.h>
#include <distance/moeoNormalizedDistance.h>

template < class MOEOT >
class moeoEuclideanDistance : public moeoNormalizedDistance < MOEOT >
{
public:

    typedef typename MOEOT::ObjectiveVector ObjectiveVector;


    const double operator()(const MOEOT & _moeo1, const MOEOT & _moeo2)
    {
        double result = 0.0;
        double tmp1, tmp2;
        for (unsigned int i=0; i<ObjectiveVector::nObjectives(); i++)
        {
            tmp1 = (_moeo1.objectiveVector()[i] - bounds[i].minimum()) / bounds[i].range();
            tmp2 = (_moeo2.objectiveVector()[i] - bounds[i].minimum()) / bounds[i].range();
            result += (tmp1-tmp2) * (tmp1-tmp2);
        }
        return sqrt(result);
    }


private:

    using moeoNormalizedDistance < MOEOT > :: bounds;

};

#endif /*MOEOEUCLIDEANDISTANCE_H_*/

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