private DocRectangle ConvertToDocRect(iTextSharp.text.pdf.parser.Vector topLeftCoord, iTextSharp.text.pdf.parser.Vector bottomRightCoord,
iTextSharp.text.Rectangle pageRect, int pageRotation)
{
double tlX = topLeftCoord.Dot(new iTextSharp.text.pdf.parser.Vector(1, 0, 0));
double tlY = topLeftCoord.Dot(new iTextSharp.text.pdf.parser.Vector(0, 1, 0));
double width = bottomRightCoord.Dot(new iTextSharp.text.pdf.parser.Vector(1, 0, 0)) - tlX;
double height = tlY - bottomRightCoord.Dot(new iTextSharp.text.pdf.parser.Vector(0, 1, 0));
DocRectangle docRect = new DocRectangle(tlX * 100 / pageRect.Width, (pageRect.Height - tlY) * 100 / pageRect.Height, width * 100 / pageRect.Width, height * 100 / pageRect.Height);
docRect.RotateAt(pageRotation, 50, 50);
return docRect;
}