/** The main loop for the background thread. It is here that most of the work os orchestrated. */
public void run() {
double thisCost = 500.0;
double oldCost = 0.0;
double dcost = 500.0;
int countSame = 0;
map.update(map.getGraphics());
while (countSame < 100) {
generation++;
int ioffset = matingPopulationSize;
int mutated = 0;
// Mate the chromosomes in the favoured population
// with all in the mating population
for (int i = 0; i < favoredPopulationSize; i++) {
Chromosome cmother = chromosomes[i];
// Select partner from the mating population
int father = (int) (0.999999 * Math.random() * (double) matingPopulationSize);
Chromosome cfather = chromosomes[father];
mutated += cmother.mate(cfather, chromosomes[ioffset], chromosomes[ioffset + 1]);
ioffset += 2;
}
// The new generation is in the matingPopulation area
// move them to the correct area for sort.
for (int i = 0; i < matingPopulationSize; i++) {
chromosomes[i] = chromosomes[i + matingPopulationSize];
chromosomes[i].calculateCost(cities);
}
// Now sort the new mating population
Chromosome.sortChromosomes(chromosomes, matingPopulationSize);
double cost = chromosomes[0].getCost();
dcost = Math.abs(cost - thisCost);
thisCost = cost;
double mutationRate = 100.0 * (double) mutated / (double) matingPopulationSize;
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumFractionDigits(2);
nf.setMinimumFractionDigits(2);
status.setText(
"Generation "
+ generation
+ " Cost "
+ (int) thisCost
+ " Mutated "
+ nf.format(mutationRate)
+ "%");
if ((int) thisCost == (int) oldCost) {
countSame++;
} else {
countSame = 0;
oldCost = thisCost;
}
map.update(map.getGraphics());
}
status.setText("Solution found after " + generation + " generations.");
}
static {
Stroke stroke = new BasicStroke(2);
selectionShape = stroke.createStrokedShape(hitRect);
format.setMinimumIntegerDigits(1);
format.setMinimumFractionDigits(1);
format.setMaximumFractionDigits(2);
}
public void updateStates() {
NumberFormat nf = NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
nf.setMinimumFractionDigits(2);
try {
// System.out.println("getting variables.");
status = cryo.cryoGetStatusCORBA();
frame.lblStatus.setText(statusString[status] + " ");
heater = cryo.cryoGetHeaterCORBA();
frame.lblHeater.setText(nf.format(heater) + " watts");
temp = cryo.cryoGetTempCORBA();
frame.lblTemp.setText(nf.format(temp) + " deg");
cli = cryo.cryoGetCliCORBA();
if (Double.isNaN(cli)) {
frame.lblCli.setText(cli + " ");
} else frame.lblCli.setText(nf.format(cli) + " ");
} catch (org.omg.CORBA.COMM_FAILURE cf) {
// stop thread and try to reconnect to the server
frame.lblStatus.setText("FAILURE!! Server connected?");
stop = true;
return;
}
}
//
// Sets the frame rate text displayed in the lower left corner.
//
void setFrameRateText() {
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumFractionDigits(2);
nf.setMaximumFractionDigits(2);
frameRateText.text(
"frames/sec = " + nf.format((double) frameCount / ((double) (time - lastTime) / 1000.0)));
}
/** Update the statistic */
public void setStats(int mi, double me, int ma, double sd) {
NumberFormat nf = NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
nf.setMinimumFractionDigits(2);
nf.setGroupingUsed(false);
min.setText(Integer.toString(mi));
max.setText(Integer.toString(ma));
String s = nf.format(me);
mean.setText(s);
s = nf.format(sd);
stdDev.setText(s);
}