// helper
private bool IsBadCalibrationPlot(CalibrationPlotItem cpi, double threshold)
{
Vector2D vLeft = new Vector2D(cpi.MapLeftX, cpi.MapLeftY);
Vector2D vRight = new Vector2D(cpi.MapRightX, cpi.MapRightY);
Vector2D vTrue = new Vector2D(cpi.TrueX, cpi.TrueY);
double lLeft = Math.Abs((vLeft - vTrue).Length);
double lRight = Math.Abs((vRight - vTrue).Length);
if (lLeft > threshold || lRight > threshold)
{
return(true);
}
else
{
return(false);
}
}
// remove bad samples from calib plot
private Tobii.Eyetracking.Sdk.Calibration RemoveBadSamplesFromCalibrationPlot(Tobii.Eyetracking.Sdk.Calibration calibration)
{
int n = calibration.Plot.Count;
List <CalibrationPlotItem> calibPlotList = new List <CalibrationPlotItem>();
try
{
for (int i = n; i > 1; i--)
{
CalibrationPlotItem cpi = calibration.Plot[i - 1];
if (IsBadCalibrationPlot(cpi, FCalibThreshold))
{
calibration.Plot.Remove(cpi);
}
}
}
catch (Exception e)
{
}
return(calibration);
}
