IEnumerator CalculateSpearman()
{
while (!_shouldStop)
{
_spearmanIsRunning = true;
TimeSpan calcStart = new TimeSpan();
calcStart = PupilGazeTracker.Instance._globalTime;
List <MovingObject> _tempObjects = new List <MovingObject>();
_cloningInProgress = true;
foreach (MovingObject mo in sceneObjects)
{
_tempObjects.Add((MovingObject)mo.Clone()); //work on a copy to (hopefully) improve performance
}
MovingObject _tempGaze = (MovingObject)gazeTrajectory.Clone();
_cloningInProgress = false;
List <double> _tempXPgaze = new List <double>(_tempGaze.getXPoints());
List <double> _tempYPgaze = new List <double>(_tempGaze.getYPoints());
// write gaze points in logfile
//foreach (double dx in _tempXPgaze) trajectoryWriter.WriteLine("gazex;" + calcStart.TotalSeconds + dx);
//foreach (double dy in _tempYPgaze) trajectoryWriter.WriteLine("gazey;" + calcStart.TotalSeconds + dy);
List <float> results = new List <float>();
foreach (MovingObject mo in _tempObjects)
{
// temporary list for not having to generate a new one at every loop
List <double> _tempXPObj = new List <double>(mo.getXPoints());
List <double> _tempYPObj = new List <double>(mo.getYPoints());
// write object coordinates to logfile
//foreach (double dx in _tempXPObj) trajectoryWriter.WriteLine(mo.name + ";" + calcStart.TotalSeconds + dx);
//foreach (double dy in _tempXPObj) trajectoryWriter.WriteLine(mo.name + ";" + calcStart.TotalSeconds + dy);
// surround calculation with try/catch block or else coroutine will end if something is divided by zero
try
{
double coeffX = Spearman.calculateSpearman(_tempXPgaze, _tempXPObj);
double coeffY = Spearman.calculateSpearman(_tempYPgaze, _tempYPObj);
correlationWriter.WriteLine(mo.name + ";" + calcStart.TotalSeconds + ";" + coeffX + ";" + coeffY + ";" + w + ";" + corrWindow + ";" + corrFrequency + ";" + Coefficient + ";" + Gaze);
// add result to the MovingObject in the original list
results.Add((float)sceneObjects.Find(x => x.Equals(mo)).addSample(calcStart, (coeffX + coeffY) / 2, corrWindow));
}
catch (Exception e)
{
Debug.LogError(e.StackTrace);
}
}
//activate only one item at a time
for (int i = 0; i < results.Count; i++)
{
// activate the object with the highest correlation value only if it's above threshold
if (results[i].CompareTo(results.Max()) == 0 && results[i] > threshold / 2)
{
_tempObjects[i].activate(true); //doesn't matter if original or clone list is used as both refer to the same GameObject
}
else
{
_tempObjects[i].activate(false);
}
}
calcDur = PupilGazeTracker.Instance._globalTime - calcStart;
yield return(new WaitForSeconds(corrFrequency - (float)calcDur.TotalSeconds)); // calculation should take place every x seconds
}
}
