private void AddGesture()
{
var eyeGesture = new EyeGesture()
{
Steps = new ObservableCollection <EyeGestureStep>()
{
new EyeGestureStep()
}
};
if (GestureList != null)
{
GestureList.Add(eyeGesture);
}
else
{
GestureList = new ObservableCollection <EyeGesture>()
{
eyeGesture
}
};
EyeGesture = eyeGesture;
}
private bool PointAdvancesGesture(Point checkpoint, double moveDelta, ref EyeGesture gesture, ref EyeGestureStep step)
{
var result = false;
if (step.type == EyeGestureStepTypes.Fixation)
{
if (moveDelta > step.Radius)
{
step.DwellStart = DateTime.Now;
}
else if (DateTime.Now > step.DwellStart + TimeSpan.FromMilliseconds(step.DwellTime))
{
result = true;
gesture.FixationPoint = checkpoint;
}
}
else if (step.type == EyeGestureStepTypes.LookInDirection)
{
result = (checkpoint.X - gesture.PointStamp.X) / (Graphics.VirtualScreenWidthInPixels * step.X / 100d) > 1 &&
(checkpoint.Y - gesture.PointStamp.Y) / (Graphics.VirtualScreenHeightInPixels * step.Y / 100d) > 1;
}
else if (step.type == EyeGestureStepTypes.LookAtArea)
{
var left = step.Left * Graphics.VirtualScreenWidthInPixels / 100d;
var top = step.Top * Graphics.VirtualScreenHeightInPixels / 100d;
if (step.Round)
{
var xRadius = step.Width * Graphics.VirtualScreenWidthInPixels / 50d;
var yRadius = step.Height * Graphics.VirtualScreenHeightInPixels / 50d;
var xLength = checkpoint.X - (left + xRadius);
var yLength = checkpoint.Y - (top + yRadius);
if (Math.Pow(xLength, 2) / Math.Pow(xRadius, 2) + Math.Pow(yLength, 2) / Math.Pow(yRadius, 2) > 1)
{
step.DwellStart = DateTime.Now;
}
else if (DateTime.Now > step.DwellStart + TimeSpan.FromMilliseconds(step.DwellTime))
{
result = true;
}
}
else
{
var width = step.Width * Graphics.VirtualScreenWidthInPixels / 100d;
var height = step.Height * Graphics.VirtualScreenHeightInPixels / 100d;
if (checkpoint.X < left || checkpoint.X > left + width || checkpoint.Y < top || checkpoint.Y > top + height)
{
step.DwellStart = DateTime.Now;
}
else if (DateTime.Now > step.DwellStart + TimeSpan.FromMilliseconds(step.DwellTime))
{
result = true;
}
}
}
else
{
if ((checkpoint - gesture.FixationPoint).Length > Graphics.VirtualScreenHeightInPixels * step.Width / 50d)
{
step.DwellStart = DateTime.Now;
}
else if (DateTime.Now > step.DwellStart + TimeSpan.FromMilliseconds(step.DwellTime))
{
result = true;
}
}
if (result)
{
gesture.PointStamp = checkpoint;
gesture.TimeStamp = DateTime.Now;
}
return(result);
}
