iTextSharp矢量图

PdfContentByte cb = writer.DirectContentUnder;

//填充色的赋值

cb.SetColorFill(BaseColor.BLUE);

//边框线的赋值
cb.SetColorStroke(BaseColor.BLACK);
cb.SetLineWidth(2f);

//cb.Circle(120f, 250f, 50f);
cb.RoundRectangle(100, 100, 100, 100, 30);

//画矢量图并画线和颜色填充
cb.FillStroke();

//画矢量图画线

cb.Fill();

//画矢量图颜色填充

cb.Stroke();