public BitmapSource VisualizeCalibrationResults(List<CalibrationTarget> calibTargets)
{
CanvasCalibration.Children.Clear();
// Draw also to Drawing Visual
DrawingVisual drawingVisual = new DrawingVisual();
DrawingContext drawingContext = drawingVisual.RenderOpen();
// Fill with background color
drawingContext.DrawRectangle(
this.CanvasCalibration.Background,
null,
new Rect(0, 0, this.ActualWidth, this.ActualHeight));
// Redisplay cursor
Cursor = Cursors.Arrow;
double sumStdDeviation = 0;
double sumDistFromTargetsX = 0;
double sumDistFromTargetsY = 0;
// Loop through Calpoints in the UserControl
foreach (CalibrationPoint t in calibrationPoints)
{
CalibrationPoint calPoint = CopyPoint(t);
#region Draw tracker data for calPoint
foreach (CalibrationTarget trackerPoint in calibTargets)
{
// If target number is the same, create visuals for calibration point
if (trackerPoint.targetNumber.Equals(calPoint.Number))
{
#region Draw raw estimated gaze positions
foreach (GTPoint gpLeft in trackerPoint.estimatedGazeCoordinatesLeft)
{
// compensate for relative to full screen coordinates
Point p = AdjustPointToPartial(new Point(gpLeft.X, gpLeft.Y));
Ellipse g = new Ellipse { Width = 3, Height = 3, Fill = new SolidColorBrush(Colors.Red) };
CanvasCalibration.Children.Add(g);
Canvas.SetTop(g, p.Y);
Canvas.SetLeft(g, p.X);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(Brushes.Red, null, p, 3, 3);
}
foreach (GTPoint gpRight in trackerPoint.estimatedGazeCoordinatesRight)
{
Point p = AdjustPointToPartial(new Point(gpRight.X, gpRight.Y));
Ellipse g = new Ellipse { Width = 3, Height = 3, Fill = new SolidColorBrush(Colors.Blue) };
CanvasCalibration.Children.Add(g);
Canvas.SetTop(g, p.Y);
Canvas.SetLeft(g, p.X);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(Brushes.Blue, null, p, 3, 3);
}
#endregion
#region Draw Standard deviation indicator
CalibrationFeedbackPoint feedback = new CalibrationFeedbackPoint();
double stdDevGazeCoordinates = trackerPoint.stdDeviationGazeCoordinatesLeft;
// binocular
if (trackerPoint.stdDeviationGazeCoordinatesRight != 0)
{
stdDevGazeCoordinates += trackerPoint.stdDeviationGazeCoordinatesRight;
stdDevGazeCoordinates = stdDevGazeCoordinates / 2;
}
feedback.Width = stdDevGazeCoordinates;
feedback.Height = stdDevGazeCoordinates;
if (feedback.Width > 80)
feedback.EllipseBackground.Fill = new SolidColorBrush(Colors.Red);
else
feedback.EllipseBackground.Fill = new SolidColorBrush(Colors.Green);
CanvasCalibration.Children.Add(feedback);
#endregion
#region Average mean gaze
Point avgMeanGazeCoordinates = new Point(trackerPoint.meanGazeCoordinatesLeft.X, trackerPoint.meanGazeCoordinatesLeft.Y);
//// binocular
//if (trackerPoint.meanGazeCoordinatesRight.X != 0)
//{
// avgMeanGazeCoordinates.Y += trackerPoint.meanGazeCoordinatesRight.Y;
// avgMeanGazeCoordinates.X += trackerPoint.meanGazeCoordinatesRight.X;
// avgMeanGazeCoordinates.X = avgMeanGazeCoordinates.X/2;
// avgMeanGazeCoordinates.Y = avgMeanGazeCoordinates.Y/2;
//}
// Position avgMean feedback, compensate for relative to full screen coordinates
Point adjustedAvgMeanGazePoint = AdjustPointToPartial(avgMeanGazeCoordinates);
Canvas.SetTop(feedback, adjustedAvgMeanGazePoint.Y);
Canvas.SetLeft(feedback, adjustedAvgMeanGazePoint.X);
Panel.SetZIndex(feedback, 2);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(
feedback.EllipseBackground.Fill,
null,
adjustedAvgMeanGazePoint,
stdDevGazeCoordinates,
stdDevGazeCoordinates);
#region Connect with line if more than 80 px away
// When point is more than 80px. away connect it with a dotted line to center
if (trackerPoint.meanGazeCoordinatesLeft.Y >= calPoint.Point.Y + 80 ||
trackerPoint.meanGazeCoordinatesLeft.Y <= calPoint.Point.Y + 80)
{
// Start line
var myLine = new Line { X1 = calPoint.Point.X, Y1 = calPoint.Point.Y };
// End line
if (!double.IsNaN(feedback.Width))
myLine.X2 = adjustedAvgMeanGazePoint.X + feedback.Width / 2;
if (!double.IsNaN(feedback.Height))
myLine.Y2 = adjustedAvgMeanGazePoint.Y + feedback.Height / 2;
myLine.Stroke = Brushes.LightSteelBlue;
var dashes = new DoubleCollection { 2, 2 };
myLine.StrokeDashArray = dashes;
myLine.StrokeDashCap = PenLineCap.Round;
CanvasCalibration.Children.Add(myLine);
// Draw also to Drawing Visual
Pen linePen = new Pen();
linePen.Brush = myLine.Stroke;
linePen.DashStyle = DashStyles.Dash;
linePen.DashCap = PenLineCap.Round;
drawingContext.DrawLine(
linePen,
new Point(myLine.X1, myLine.Y1),
new Point(myLine.X2, myLine.Y2));
}
#endregion
#endregion
#region Calculate sum std dev
sumDistFromTargetsY += avgMeanGazeCoordinates.Y - (calPoint.Point.Y - calPoint.Diameter / 2);
sumDistFromTargetsX += avgMeanGazeCoordinates.X - (calPoint.Point.X - calPoint.Diameter / 2);
double sumStdDevAvg = trackerPoint.stdDeviationGazeCoordinatesLeft + trackerPoint.stdDeviationGazeCoordinatesRight;
sumStdDevAvg = sumStdDevAvg / 2;
sumStdDeviation += sumStdDevAvg;
#endregion
}
}
#endregion
#region Draw calibration points (last to stay on top)
calPoint.Visibility = Visibility.Visible;
calPoint.Opacity = 0.5;
CanvasCalibration.Children.Add(calPoint);
Canvas.SetTop(calPoint, calPoint.Point.Y - calPoint.Diameter / 2);
Canvas.SetLeft(calPoint, calPoint.Point.X - calPoint.Diameter / 2);
Panel.SetZIndex(calPoint, 99);
// Draw also to Drawing Visual
SolidColorBrush whiteBrush = new SolidColorBrush();
whiteBrush.Color = Color.FromArgb(122, 255, 255, 255);
drawingContext.DrawEllipse(
whiteBrush,
null,
calPoint.Point,
calPoint.Diameter / 2,
calPoint.Diameter / 2);
drawingContext.DrawEllipse(
null,
new Pen(Brushes.Black, 1f),
calPoint.Point,
8,
8);
// Enable recalibration
calPoint.OnClick += RecalibratePoint;
#endregion
}
// Generate values for the 1-5 star ratings-control from quality feeback
AvgSumStdDev = sumStdDeviation / calibTargets.Count;
AvgDistFromTargets = ((sumDistFromTargetsY + sumDistFromTargetsX) / 2) / calibTargets.Count;
// Now perform the rendering of the Visual to a bitmap
drawingContext.Close();
var bmp = new RenderTargetBitmap((int)ActualWidth, (int)ActualHeight, 96, 96, PixelFormats.Pbgra32);
bmp.Render(drawingVisual);
return bmp;
}
public BitmapSource VisualizeCalibrationResults(List <CalibrationTarget> calibTargets)
{
CanvasCalibration.Children.Clear();
// Draw also to Drawing Visual
DrawingVisual drawingVisual = new DrawingVisual();
DrawingContext drawingContext = drawingVisual.RenderOpen();
// Fill with background color
drawingContext.DrawRectangle(
this.CanvasCalibration.Background,
null,
new Rect(0, 0, this.ActualWidth, this.ActualHeight));
// Redisplay cursor
Cursor = Cursors.Arrow;
double sumStdDeviation = 0;
double sumDistFromTargetsX = 0;
double sumDistFromTargetsY = 0;
// Loop through Calpoints in the UserControl
foreach (CalibrationPoint t in calibrationPoints)
{
CalibrationPoint calPoint = CopyPoint(t);
#region Draw tracker data for calPoint
foreach (CalibrationTarget trackerPoint in calibTargets)
{
// If target number is the same, create visuals for calibration point
if (trackerPoint.targetNumber.Equals(calPoint.Number))
{
#region Draw raw estimated gaze positions
foreach (GTPoint gpLeft in trackerPoint.estimatedGazeCoordinatesLeft)
{
// compensate for relative to full screen coordinates
Point p = AdjustPointToPartial(new Point(gpLeft.X, gpLeft.Y));
Ellipse g = new Ellipse {
Width = 3, Height = 3, Fill = new SolidColorBrush(Colors.Red)
};
CanvasCalibration.Children.Add(g);
Canvas.SetTop(g, p.Y);
Canvas.SetLeft(g, p.X);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(Brushes.Red, null, p, 3, 3);
}
foreach (GTPoint gpRight in trackerPoint.estimatedGazeCoordinatesRight)
{
Point p = AdjustPointToPartial(new Point(gpRight.X, gpRight.Y));
Ellipse g = new Ellipse {
Width = 3, Height = 3, Fill = new SolidColorBrush(Colors.Blue)
};
CanvasCalibration.Children.Add(g);
Canvas.SetTop(g, p.Y);
Canvas.SetLeft(g, p.X);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(Brushes.Blue, null, p, 3, 3);
}
#endregion
#region Draw Standard deviation indicator
CalibrationFeedbackPoint feedback = new CalibrationFeedbackPoint();
double stdDevGazeCoordinates = trackerPoint.stdDeviationGazeCoordinatesLeft;
// binocular
if (trackerPoint.stdDeviationGazeCoordinatesRight != 0)
{
stdDevGazeCoordinates += trackerPoint.stdDeviationGazeCoordinatesRight;
stdDevGazeCoordinates = stdDevGazeCoordinates / 2;
}
feedback.Width = stdDevGazeCoordinates;
feedback.Height = stdDevGazeCoordinates;
if (feedback.Width > 80)
{
feedback.EllipseBackground.Fill = new SolidColorBrush(Colors.Red);
}
else
{
feedback.EllipseBackground.Fill = new SolidColorBrush(Colors.Green);
}
CanvasCalibration.Children.Add(feedback);
#endregion
#region Average mean gaze
Point avgMeanGazeCoordinates = new Point(trackerPoint.meanGazeCoordinatesLeft.X, trackerPoint.meanGazeCoordinatesLeft.Y);
//// binocular
//if (trackerPoint.meanGazeCoordinatesRight.X != 0)
//{
// avgMeanGazeCoordinates.Y += trackerPoint.meanGazeCoordinatesRight.Y;
// avgMeanGazeCoordinates.X += trackerPoint.meanGazeCoordinatesRight.X;
// avgMeanGazeCoordinates.X = avgMeanGazeCoordinates.X/2;
// avgMeanGazeCoordinates.Y = avgMeanGazeCoordinates.Y/2;
//}
// Position avgMean feedback, compensate for relative to full screen coordinates
Point adjustedAvgMeanGazePoint = AdjustPointToPartial(avgMeanGazeCoordinates);
Canvas.SetTop(feedback, adjustedAvgMeanGazePoint.Y);
Canvas.SetLeft(feedback, adjustedAvgMeanGazePoint.X);
Panel.SetZIndex(feedback, 2);
// Draw also to Drawing Visual
drawingContext.DrawEllipse(
feedback.EllipseBackground.Fill,
null,
adjustedAvgMeanGazePoint,
stdDevGazeCoordinates,
stdDevGazeCoordinates);
#region Connect with line if more than 80 px away
// When point is more than 80px. away connect it with a dotted line to center
if (trackerPoint.meanGazeCoordinatesLeft.Y >= calPoint.Point.Y + 80 ||
trackerPoint.meanGazeCoordinatesLeft.Y <= calPoint.Point.Y + 80)
{
// Start line
var myLine = new Line {
X1 = calPoint.Point.X, Y1 = calPoint.Point.Y
};
// End line
if (!double.IsNaN(feedback.Width))
{
myLine.X2 = adjustedAvgMeanGazePoint.X + feedback.Width / 2;
}
if (!double.IsNaN(feedback.Height))
{
myLine.Y2 = adjustedAvgMeanGazePoint.Y + feedback.Height / 2;
}
myLine.Stroke = Brushes.LightSteelBlue;
var dashes = new DoubleCollection {
2, 2
};
myLine.StrokeDashArray = dashes;
myLine.StrokeDashCap = PenLineCap.Round;
CanvasCalibration.Children.Add(myLine);
// Draw also to Drawing Visual
Pen linePen = new Pen();
linePen.Brush = myLine.Stroke;
linePen.DashStyle = DashStyles.Dash;
linePen.DashCap = PenLineCap.Round;
drawingContext.DrawLine(
linePen,
new Point(myLine.X1, myLine.Y1),
new Point(myLine.X2, myLine.Y2));
}
#endregion
#endregion
#region Calculate sum std dev
sumDistFromTargetsY += avgMeanGazeCoordinates.Y - (calPoint.Point.Y - calPoint.Diameter / 2);
sumDistFromTargetsX += avgMeanGazeCoordinates.X - (calPoint.Point.X - calPoint.Diameter / 2);
double sumStdDevAvg = trackerPoint.stdDeviationGazeCoordinatesLeft + trackerPoint.stdDeviationGazeCoordinatesRight;
sumStdDevAvg = sumStdDevAvg / 2;
sumStdDeviation += sumStdDevAvg;
#endregion
}
}
#endregion
#region Draw calibration points (last to stay on top)
calPoint.Visibility = Visibility.Visible;
calPoint.Opacity = 0.5;
CanvasCalibration.Children.Add(calPoint);
Canvas.SetTop(calPoint, calPoint.Point.Y - calPoint.Diameter / 2);
Canvas.SetLeft(calPoint, calPoint.Point.X - calPoint.Diameter / 2);
Panel.SetZIndex(calPoint, 99);
// Draw also to Drawing Visual
SolidColorBrush whiteBrush = new SolidColorBrush();
whiteBrush.Color = Color.FromArgb(122, 255, 255, 255);
drawingContext.DrawEllipse(
whiteBrush,
null,
calPoint.Point,
calPoint.Diameter / 2,
calPoint.Diameter / 2);
drawingContext.DrawEllipse(
null,
new Pen(Brushes.Black, 1f),
calPoint.Point,
8,
8);
// Enable recalibration
calPoint.OnClick += RecalibratePoint;
#endregion
}
// Generate values for the 1-5 star ratings-control from quality feeback
AvgSumStdDev = sumStdDeviation / calibTargets.Count;
AvgDistFromTargets = ((sumDistFromTargetsY + sumDistFromTargetsX) / 2) / calibTargets.Count;
// Now perform the rendering of the Visual to a bitmap
drawingContext.Close();
var bmp = new RenderTargetBitmap((int)ActualWidth, (int)ActualHeight, 96, 96, PixelFormats.Pbgra32);
bmp.Render(drawingVisual);
return(bmp);
}
