private void DrawAngleArc(Saccade saccade)
{
// Want to draw the angle arc at the beginning of the saccade (?)
System.Windows.Point arcCentre = new System.Windows.Point(saccade.From.x, saccade.From.y);
System.Windows.Point arcCentreCanvas = ScreenToCanvas(arcCentre);
arcCentreCanvas.X += fixationCircleSize / 2;
arcCentreCanvas.Y += fixationCircleSize / 2;
Double angle = saccade.Direction;
// Create a path to draw a geometry with.
Path arcPath = CreateArcPath(arcCentreCanvas, angle, saccadeAngleRadius);
canvas.Children.Add(arcPath);
saccadeAnglePaths.Add(arcPath);
}
// TODO: possible feature: "longest follow streak, mean/median follow streak"
// "longest opposite streak, mean/meadian opposite streak"
private double CountRelation(Saccade.Relation relation, List <Saccade> saccades)
{
int count = 0;
int numberOfSaccades = saccades.Count;
// Compare each pair of saccades.
for (int i = 1; i < numberOfSaccades; i++)
{
Saccade previous = saccades[i - 1];
Saccade next = saccades[i];
if (Saccade.Compare(next, previous) == relation)
{
count++;
}
}
return(count);
}
public List <Saccade> getSaccades(List <Fixation> fixations)
{
List <Saccade> saccades = new List <Saccade>();
Saccade s = new Saccade();
int i = 0;
foreach (Fixation f in fixations)
{
if (s.start == null)
{
s.start = f;
}
else
{
s.finish = f;
s.completeSaccade(i);
saccades.Add(s);
s = new Saccade();
s.start = f;
i++;
}
}
return(saccades);
}