//***************************************
// AverageDistanceWithAnomalies
//
// use: calculates the average difference between
// the points of two gestures but weighing
// those which deviate significantly by
// multiplying them
// Both the tightness of this and the factor
// of multiplication are customizable
// above
//
// param: playerGesture: first to be compared
// template: gesture to be compared against
//
// return: returns float value of the average distance
// between points of two parameter gestures
// with weights
private float AverageDifferenceWithAnomalies(DrawnGesture playerGesture, DrawnGesture template)
{
int numPoints = playerGesture.GetNumPoints();
if (numPoints != template.GetNumPoints())
{
Debug.Log("Number of points differs from templates");
return(-1f);
}
float totalDifference = 0;
float[] sampleDifferences = new float[numPoints];
float[] sampleDeviations = new float[numPoints];
float standardDev = 0;
for (int i = 0; i < numPoints; i++)
{
float thisDistance = PointDistance(playerGesture.GetPoints()[i], template.GetPoints()[i]);
sampleDifferences[i] = thisDistance;
totalDifference += thisDistance;
}
float average = totalDifference / numPoints;
for (int i = 0; i < numPoints; i++)
{
sampleDeviations[i] = Math.Abs(sampleDifferences[i] - average);
standardDev += sampleDifferences[i];
}
standardDev = standardDev / numPoints;
for (int i = 0; i < numPoints; i++)
{
if (Math.Abs(sampleDeviations[i]) > devTightness * standardDev)
{
totalDifference -= sampleDifferences[i];
totalDifference += anomaliesFactor * sampleDifferences[i];
}
}
average = totalDifference / numPoints;
return(average);
}
//***************************************
// AverageDifference
//
// use: caluclates the average distance between
// the points of two gestures
//
// param: playerGesture: first to be compared
// template: gesture to be compared against
//
// return: returns float value of the average distance
// between points of two parameter gestures
private float AverageDifference(DrawnGesture playerGesture, DrawnGesture template)
{
int numPoints = playerGesture.GetNumPoints();
if (numPoints != template.GetNumPoints())
{
Debug.Log("Number of points differs from templates");
return(-1f);
}
float totalDifference = 0;
for (int i = 0; i < numPoints; i++)
{
totalDifference += PointDistance(playerGesture.GetPoints()[i], template.GetPoints()[i]);
}
return(totalDifference / numPoints);
}
