public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Square start = (Square)values[0];
Square end = (Square)values[1];
double actualWidth = (double)values[2];
int fileStart = (int)BitBoardHelper.GetFileFromSquare(start);
int fileEnd = (int)BitBoardHelper.GetFileFromSquare(end);
return (fileEnd - fileStart) * actualWidth;
}