PermutationCrsOPX.cpp

#include "../ECF_base.h"
#include "Permutation.h"
#include <map>
 
 
namespace Permutation
{
 
void PermutationCrsOPX::registerParameters(StateP state)
{
    myGenotype_->registerParameter(state, "crx.OPX", (voidP) new double(0), ECF::DOUBLE);
}
 
 
bool PermutationCrsOPX::initialize(StateP state)
{
    voidP sptr = myGenotype_->getParameterValue(state, "crx.OPX");
    probability_ = *((double*)sptr.get());
    return true;
}
 
 
bool PermutationCrsOPX::mate(GenotypeP gen1, GenotypeP gen2, GenotypeP child)
{
    Permutation* p1 = (Permutation*) (gen1.get());
    Permutation* p2 = (Permutation*) (gen2.get());
    Permutation* ch = (Permutation*) (child.get());
 
    int position = state_->getRandomizer()->getRandomInteger(p1->getSize()-1);
 
    // set representing values copied from first parent
    std::map<int, int> subSet;
 
    // copy first part of first parent (up to element at "position") into child
    for(int i = 0; i <= position; i++) {
        ch->variables[i] = p1->variables[i];
        // remember visited element
        subSet[p1->variables[i]] = 0;
    }
 
    // How many values are left?
    int left = (int) p1->getSize() - position - 1;
    // Continue filling child from next position:
    int indexChild = position + 1;
 
    // Go through each value of second parent in correct order;
    // if value is not already visited, copy it to child in first available position
    for(int ind2 = 0; ind2 < (int) p1->getSize() && left>0; ind2++) {
        if(subSet.find(p2->variables[ind2]) == subSet.end()) {
            ch->variables[indexChild] = p2->variables[ind2];
            left--;
            indexChild++;
        }
    }
 
    return true;
}
 
}