public void MouseDown(MouseButtonEventArgs e, System.Windows.Controls.Grid mediaContainer)
{
if (calibration.isCalibrating)
{
System.Windows.Point p = e.GetPosition(mediaContainer);
calibration.AddPoint(p);
}
else if (calibration.isCalibrated)
{
System.Windows.Point p = e.GetPosition(mediaContainer);
calibration.calcPointPositionOnTable(p);
}
}