iTextSharp.text.pdf.PdfContentByte.DrawRadioField C# (CSharp) Метод

        public void DrawRadioField(float llx, float lly, float urx, float ury, bool on)
        {
            if (llx > urx) { float x = llx; llx = urx; urx = x; }
            if (lly > ury) { float y = lly; lly = ury; ury = y; }
            SaveState();
            // silver circle
            SetLineWidth(1);
            SetLineCap(1);
            SetColorStroke(new BaseColor(0xC0, 0xC0, 0xC0));
            Arc(llx + 1f, lly + 1f, urx - 1f, ury - 1f, 0f, 360f);
            Stroke();
            // gray circle-segment
            SetLineWidth(1);
            SetLineCap(1);
            SetColorStroke(new BaseColor(0xA0, 0xA0, 0xA0));
            Arc(llx + 0.5f, lly + 0.5f, urx - 0.5f, ury - 0.5f, 45, 180);
            Stroke();
            // black circle-segment
            SetLineWidth(1);
            SetLineCap(1);
            SetColorStroke(new BaseColor(0x00, 0x00, 0x00));
            Arc(llx + 1.5f, lly + 1.5f, urx - 1.5f, ury - 1.5f, 45, 180);
            Stroke();
            if (on) {
                // gray circle
                SetLineWidth(1);
                SetLineCap(1);
                SetColorFill(new BaseColor(0x00, 0x00, 0x00));
                Arc(llx + 4f, lly + 4f, urx - 4f, ury - 4f, 0, 360);
                Fill();
            }
            RestoreState();
        }