public static PdfPage NewASeries(int n, bool isPortrait = true)
{
var longSide = (int)(1000.0 / Math.Pow(2.0, (2.0 * n - 1.0) / 4.0) + 0.2);
var shortSide = (int)(longSide / Math.Sqrt(2.0));
switch (n)
{
case 0:
case 3:
case 6:
// manually correct rounding errors
shortSide++;
break;
}
var width = isPortrait ? shortSide : longSide;
var height = isPortrait ? longSide : shortSide;
return(new PdfPage(PdfMeasurement.Mm(width), PdfMeasurement.Mm(height)));
}
