private void Page_KeyDown(object sender, KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.Escape)
{
App.Current.Exit();
}
else if (e.Key == Windows.System.VirtualKey.Delete ||
e.Key == Windows.System.VirtualKey.Back)
{
GazeHistory.Clear();
}
}
private void GazeInputSourcePreview_GazeMoved(GazeInputSourcePreview sender, GazeMovedPreviewEventArgs args)
{
var point = args.CurrentPoint.EyeGazePosition;
if (!point.HasValue)
{
return;
}
GazeHistory.Add(point.Value);
if (GazeHistory.Count > MaxGazeHistorySize)
{
GazeHistory.RemoveAt(0);
}
}
private void UpdateGazeHistory(GazePointPreview pt)
{
if (!pt.EyeGazePosition.HasValue)
{
return;
}
var transform = rootFrame.TransformToVisual(this);
var point = transform.TransformPoint(pt.EyeGazePosition.Value);
GazeHistory.Add(point);
if (GazeHistory.Count > MaxGazeHistorySize)
{
GazeHistory.RemoveAt(0);
}
}
private void UpdateGazeHistory(GazePointPreview pt)
{
if (pt.EyeGazePosition.HasValue)
{
var transform = rootFrame.TransformToVisual(this);
var newPoint = transform.TransformPoint(pt.EyeGazePosition.Value);
if (oldPoint.HasValue)
{
GazeHistory.Add(new PointPair(oldPoint.Value, newPoint));
if (GazeHistory.Count > MaxGazeHistorySize)
{
GazeHistory.RemoveAt(0);
}
}
oldPoint = newPoint;
}
}
