void MutateIndividual(Individual& individualToBeMutated, double mutationProbability) {
int numberOfUnits = individualToBeMutated.size();
for(int i=0;i<numberOfUnits;i++) {
UnitGene tempUnit = individualToBeMutated[i]; // Choose one unit
int numberOfGeneSets = tempUnit.size();
for(int j=0;j<numberOfGeneSets;j++) {
Genes geneSetForMutation = tempUnit[j]; // Choose one gene set
if(j<numberOfGeneSets-1) { // MUTATION FOR WHOLE GENE SETS - MACHINE GENE SET MUTATION
if(i!=0 && j!=1) { // To avoid mutation for the dummy buffer gene set
if(GetRandomDouble()<mutationProbability) {
MutateMachineGeneSet(geneSetForMutation);
tempUnit[j] = geneSetForMutation; // Current Unit is replaced with new mutated machine gene set
} // Mutation complete. If no mutation, current unit maintains old machine gene set
}
}
else { // NORMAL MUTATION FOR INDIVIDUAL GENES - AXLE GENE MUTATION
if(i!=0) { // To avoid mutation for the tractor axles gene set
MutateAxleGeneSet(geneSetForMutation, mutationProbability);
tempUnit[j] = geneSetForMutation; // Current Unit is replaced with new mutated axle gene set
}
} // Mutation complete. If no mutation, current unit maintains old axle gene set
} // All gene sets in current unit have undergone mutation
individualToBeMutated[i] = tempUnit; // Mutated unit is now placed in the individual
} // All units in current individual have undergone mutation
}
int TournamentSelection(Fitnesses& fitnessForSelection, float tournamentSelectionParameter, int tournamentSize) {
std::vector<int> randomIndividualIndex;
std::vector<double> randomIndividualFitness;
int populationSize = fitnessForSelection.size();
// Select two individuals to participate in the tournament
for(int i=0;i<tournamentSize;i++) {
// Contains the indices of two individuals participating in the tournament
int temporaryIndex = GetRandomIndex(populationSize);
randomIndividualIndex.push_back(temporaryIndex); // Index needed to pass to main()
double temporaryFitness = fitnessForSelection[temporaryIndex];
randomIndividualFitness.push_back(temporaryFitness);
}
// Generate random floating point number (double) for tournament selection
double randomDouble = GetRandomDouble();
int fittestIndividualIndex, weakestIndividualIndex;
// Choose fitter individual if random double is lesser than tournament selection parameter
if(randomDouble < tournamentSelectionParameter) {
// Return fittest individual
fittestIndividualIndex = GetFittestIndividual(randomIndividualIndex, randomIndividualFitness);
return fittestIndividualIndex;
}
else {
// Return weakest individual
weakestIndividualIndex = GetWeakestIndividual(randomIndividualIndex, randomIndividualFitness);
return weakestIndividualIndex;
}
}
double RandTools::GetGaussianDouble(double sigma, double mu) {
generate = !generate;
if (!generate)
return (z1 * sigma + mu);
double u1, u2;
do {
u1 = GetRandomDouble();
u2 = GetRandomDouble();
}while (u1 <= epsilon);
z0 = sqrt(-2.0 * log(u1)) * cos(two_pi * u2);
z1 = sqrt(-2.0 * log(u1)) * sin(two_pi * u2);
return (z0 * sigma + mu);
} // Generates two gaussian distributed random numbers and stores the second one untill called again, then repeats.
void MutateAxleGeneSet(Genes& geneSetForMutation, double mutationProbability) {
int numberOfGenes = geneSetForMutation.size();
for(int i=0;i<numberOfGenes;i++) {
if(GetRandomDouble()<mutationProbability){
//std::cout<<"Inside axle mutation"<<std::endl;
geneSetForMutation[i]=1-geneSetForMutation[i];
}
}
}
//************************************************************************
// CLCDGfx::StartTransition
//************************************************************************
void CLCDGfx::Cache()
{
DWORD dwStart = GetTickCount();
// Initialize pixels
if(m_eTransition == TRANSITION_MORPH)
{
SLCDPixel *pPixel = NULL;
SLCDPixel *pSource = NULL;
int iIndex = 0;
bool bBreak = false;
bool bSearch = true;
int iTransitionPixels = 0;
POINT pt;
for(int j=0;j<2;j++)
{
iIndex = 0;
for(int i=0;i<m_nHeight * m_nWidth;i++)
{
pt.y = i/m_nWidth;
pt.x = i - (i/m_nWidth)*m_nWidth;
if((j==0 && !PtInRect(&m_rTransitionRegion,pt)) || (m_pSavedBitmapBits[i] != 0x00 && (j==1 || m_pBitmapBits[i] != 0x00)))
{
iIndex = i;
pPixel = new SLCDPixel();
pPixel->dSpeed = GetRandomDouble()*0.5 + 1;
if(!PtInRect(&m_rTransitionRegion,pt)) {
pPixel->cValue = m_pBitmapBits[i];
} else {
pPixel->cValue = m_pSavedBitmapBits[i];
}
pPixel->Start.y = pt.y;
pPixel->Start.x = pt.x;
pPixel->Position = pPixel->Start;
bBreak = false;
if(j==1 && bSearch)
{
// search for a pixel in circles with increasing radius around the location
iIndex = findNearestMatch(m_pBitmapBits,i);
if(iIndex < 0) {
iIndex = i;
} else {
bBreak = true;
}
}
if(j==0 || bBreak)
{
pPixel->Destination.y = iIndex/m_nWidth;
pPixel->Destination.x = iIndex - (iIndex/m_nWidth)*m_nWidth;
m_pBitmapBits[iIndex] = 0;
m_pSavedBitmapBits[i] = 0;
if(bBreak)
iTransitionPixels++;
}
else
{
if(m_LMovingPixels.size() > 0 && iTransitionPixels > 0)
{
pSource = m_LMovingPixels[GetRandomInt(0, (int)m_LMovingPixels.size()-1)];
pPixel->Destination = pSource->Destination;
}
else
{
pPixel->Destination.x = GetRandomInt(0,m_nWidth-1);
pPixel->Destination.y = GetRandomInt(0,1)==1?-1:m_nHeight+1;
}
bSearch = false;
}
if(j == 0)
m_LStaticPixels.push_back(pPixel);
else {
m_LMovingPixels.push_back(pPixel);
}
}
}
}
bool bRandom = false;
if(m_LMovingPixels.size() <= 0)
bRandom = true;
for(iIndex=0;iIndex<m_nHeight * m_nWidth;iIndex++)
{
if(m_pBitmapBits[iIndex] == 0)
continue;
pPixel = new SLCDPixel();
pPixel->dSpeed = GetRandomDouble()*0.5 + 1;
pPixel->cValue = m_pBitmapBits[iIndex];
if(!bRandom)
{
pSource = m_LMovingPixels[GetRandomInt(0, (int)m_LMovingPixels.size()-1)];
pPixel->Start = pSource->Start;
}
else
{
pPixel->Start.x = GetRandomInt(0,m_nWidth-1);
pPixel->Start.y = GetRandomInt(0,1)==1?-1:m_nHeight+1;
}
pPixel->Position = pPixel->Start;
pPixel->Destination.y = iIndex/m_nWidth;
pPixel->Destination.x = iIndex - (iIndex/m_nWidth)*m_nWidth;
m_LMovingPixels.push_back(pPixel);
}
}
m_dwTransitionStart = GetTickCount();
TRACE(_T("Textmorphing: time consumed: %0.2f\n"),(double)(m_dwTransitionStart-dwStart)/(double)1000);
}