PermutationCrsPMX.cpp

#include "../ECF_base.h"
#include "Permutation.h"
#include <map>
 
 
namespace Permutation
{
 
void PermutationCrsPMX::registerParameters(StateP state)
{
    myGenotype_->registerParameter(state, "crx.PMX", (voidP) new double(0), ECF::DOUBLE);
}
 
 
bool PermutationCrsPMX::initialize(StateP state)
{
    voidP sptr = myGenotype_->getParameterValue(state, "crx.PMX");
    probability_ = *((double*)sptr.get());
    return true;
}
 
    
bool PermutationCrsPMX::mate(GenotypeP gen1, GenotypeP gen2, GenotypeP child)
{
    Permutation* p1 = (Permutation*) (gen1.get());
    Permutation* p2 = (Permutation*) (gen2.get());
    Permutation* ch = (Permutation*) (child.get());
 
    uint start = state_->getRandomizer()->getRandomInteger(p1->getSize());
    uint end = state_->getRandomizer()->getRandomInteger((int) start, (int) p1->getSize() - 1);
 
    std::map<int, int> mappings;
 
    for(uint i = start; i < end; i++) {
        ch->variables[i] = p1->variables[i];
        mappings[p1->variables[i]] = p2->variables[i];
    }
    
    std::map<int, int>::iterator iter = mappings.begin();
 
    for(uint i = 0; i < p1->getSize(); i++) {
        //ako smo unutar podniza nemamo sto raditi sa tim elementima
        if(i >= start && i < end)
            continue;
        //za pocetak probajmo s elementom iz drugog roditelja
        int map = p2->variables[i];
        //dok god se trenutni element koji želimo staviti na i-to mjesto 
        //djeteta vec u njemu nalazi trazimo dalje
        do {
            iter = mappings.find(map);
            //ako se nalazi vec u podnizu probajmo s elementom koji je prije stajao na tom mjestu
            if(iter != mappings.end()) {
                map = iter->second;
            }
            else 
                break;
        } while(true);
        ch->variables[i] = map;
    }
 
    return true;
}
 
}