private void GazeInputSourcePreview_GazeMoved(GazeInputSourcePreview sender, GazeMovedPreviewEventArgs args)
{
if (!ShowIntermediatePoints)
{
UpdateGazeHistory(args.CurrentPoint);
return;
}
var points = args.GetIntermediatePoints();
foreach (var pt in points)
{
UpdateGazeHistory(pt);
}
}
private void OnGazeMoved(
GazeInputSourcePreview provider,
GazeMovedPreviewEventArgs args)
{
if (!_isShuttingDown)
{
var intermediatePoints = args.GetIntermediatePoints();
foreach (var point in intermediatePoints)
{
var position = point.EyeGazePosition;
if (position != null)
{
_gazeCursor.IsGazeEntered = true;
ProcessGazePoint(new TimeSpan((long)point.Timestamp * 10), position.Value);
}
else
{
// Debug.WriteLine("Null position eaten at %ld", point.Timestamp);
}
}
}
}
private void OnGazeMoved(GazeInputSourcePreview sender, GazeMovedPreviewEventArgs args)
{
var points = args.GetIntermediatePoints();
if (points.Count != 1)
{
Log($"Grouped points reported in move, Count={points.Count}");
}
foreach (var point in points)
{
var position = point.EyeGazePosition;
var timestamp = TimeSpan.FromMilliseconds(point.Timestamp / 1000.0);
if (!_isReporting)
{
_startTimestamp = timestamp;
if (!_isEntered)
{
Log("Gaze report without enter");
_isEntered = true;
}
else if (_isFirstReportExpected && (_lastPosition.HasValue != position.HasValue ||
(_lastPosition.HasValue &&
!(_lastPosition.Value.X == position.Value.X &&
_lastPosition.Value.Y == position.Value.Y))))
{
Log("First report after enter is inconsistent", point);
}
_isFirstReportExpected = false;
_newPositionCount = position.HasValue ? 1 : 0;
_noPositionCount = position.HasValue ? 0 : 1;
_repeatPositionCount = 0;
_blickCount = 0;
_minDelta = TimeSpan.MaxValue;
_maxDelta = TimeSpan.MinValue;
_isReporting = true;
_reportingTimer.Start();
}
else
{
var delta = timestamp - _lastTimestamp;
if (delta < _minDelta)
{
_minDelta = delta;
}
if (_maxDelta < delta)
{
_maxDelta = delta;
}
if (2 * _minDelta < delta)
{
_blickCount++;
}
if (_lastPosition.HasValue)
{
if (position.HasValue)
{
if (_lastPosition == position)
{
_repeatPositionCount++;
}
else
{
_newPositionCount++;
}
}
else
{
_noPositionCount++;
}
}
else
{
if (position.HasValue)
{
_newPositionCount++;
}
else
{
_noPositionCount++;
}
}
}
_lastPosition = position;
_lastTimestamp = timestamp;
_lastTickCount = TimeSpan.FromMilliseconds(Environment.TickCount);
}
}