public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
PNM pnm = values[0] as PNM;
int? selection = values[1] as int?;
Visibility?visibility = values[2] as Visibility?;
if (pnm == null || selection == null || visibility != Visibility.Visible)
{
return(Binding.DoNothing);
}
double[] rawData;
switch (selection)
{
case 0:
rawData = pnm.GetHistogramLuminosity();
break;
case 1:
rawData = pnm.GetHistogramRed();
break;
case 2:
rawData = pnm.GetHistogramGreen();
break;
case 3:
rawData = pnm.GetHistogramBlue();
break;
default:
return(Binding.DoNothing);
}
return(BuildHistogramGeometry(rawData));
}
