// $Id: SPEA2Crossover.h 15963 2013-05-02 19:17:13Z sjoelund.se $
/**
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 * c/o Linköpings universitet, Department of Computer and Information Science,
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 * Main contributor 2010, Hubert Thierot, CEP - ARMINES (France)

     @file EA2Crossover.h
     @brief Comments for file documentation.
     @author Hubert Thieriot, hubert.thieriot@mines-paristech.fr
     Company : CEP - ARMINES (France)
     http://www-cep.ensmp.fr/english/
     @version 0.9 

  */
#ifndef EA2CROSSOVER_H
#define EA2CROSSOVER_H

#include <eoOp.h>

#include "LowTools.h"
#include "MOParameter.h"

template<class EOT>
class EA2Crossover: public eoQuadOp<EOT>
{
public:
  /// Ctor
  EA2Crossover(MOParameters* _parameters):eoQuadOp<EOT>() {parameters = _parameters;}
  virtual std::string className() const {return "EA2Crossover";}
virtual bool operator()(EOT& _eoA, EOT& _eoB ) {
    
    // for double, int and bool, both eos are modified, new values are taken between two old values)
    // !! need to be studied and adapted to specific problems

    bool oneHasChanged = false;

    int iVar1,iVar2;
    double newValue1, newValue2;
    
    //********************************
    // Crossover on double variables 
    //********************************
        if(rng.flip(parameters->value("doublePCross",0.25).toDouble()) && (_eoA.doubleVars.size()>0))
    {
        // getting new eoA iVar1 value
        iVar1 = LowTools::round(rng.random(_eoA.doubleVars.size()-1));
        //newValue = random value between eoA and eoB var values
        newValue1 = std::min<double>(_eoA.doubleVars.at(iVar1),_eoB.doubleVars.at(iVar1)) //min
            + rng.random(fabs(_eoA.doubleVars.at(iVar1)-_eoB.doubleVars.at(iVar1)));
        // getting new eoB iVar2 value
        iVar2 = LowTools::round(rng.random(_eoA.doubleVars.size()-1));
        //newValue = random value between eoA and eoB var values
        newValue2 = std::min<double>(_eoA.doubleVars.at(iVar2),_eoB.doubleVars.at(iVar2)) //min
            + rng.random(fabs(_eoA.doubleVars.at(iVar2)-_eoB.doubleVars.at(iVar2)));
        // modifying eos
        _eoA.doubleVars.at(iVar1) = newValue1;
        _eoB.doubleVars.at(iVar2) = newValue2;

        oneHasChanged = true;
    }
    
    //********************************
    // Crossover on int variables 
    //********************************
        if(rng.flip(parameters->value("intPCross",0.25).toDouble()) && (_eoA.intVars.size()>0))
    {
        // getting new eoA iVar1 value
        iVar1 = LowTools::round(rng.random(_eoA.intVars.size()-1));
        //newValue = random value between eoA and eoB var values
        newValue1 = std::min<double>(_eoA.intVars.at(iVar1),_eoB.intVars.at(iVar1)) //min
            + rng.random(abs((_eoA.intVars.at(iVar1))-(_eoB.intVars.at(iVar1))));
        // getting new eoB iVar2 value
        iVar2 = LowTools::round(rng.random(_eoA.intVars.size()-1));
        //newValue = random value between eoA and eoB var values
        newValue2 = std::min<double>(_eoA.intVars.at(iVar2),_eoB.intVars.at(iVar2)) //min
            + rng.random(abs((_eoA.intVars.at(iVar2)-_eoB.intVars.at(iVar2))));
        // modifying eos    
        _eoA.intVars.at(iVar1) = LowTools::round(newValue1);
        _eoB.intVars.at(iVar2) = LowTools::round(newValue2);

        oneHasChanged = true;
    }

    //********************************
    // Crossover on bool variables 
    //********************************
        if(rng.flip(parameters->value("boolPCross",0.25).toDouble()) && (_eoA.boolVars.size()>0))
    {

        iVar1 = LowTools::round(rng.random(_eoA.boolVars.size()-1));
        bool newBoolValue1 =_eoB.boolVars.at(iVar1);

        iVar2 = LowTools::round(rng.random(_eoA.boolVars.size()-1));
        bool newBoolValue2 =_eoA.boolVars.at(iVar2);

        _eoA.boolVars.at(iVar1)=newBoolValue1;
        _eoB.boolVars.at(iVar2)=newBoolValue2;

        oneHasChanged = true;
    }
    
    return oneHasChanged;
}
private :

        MOParameters *parameters;


};

#endif
