ComponentFactory.Krypton.Ribbon.ViewDrawRibbonScrollButton.CreateBorderPath C# (CSharp) Method

        private GraphicsPath CreateBorderPath(Rectangle rect)
        {
            GraphicsPath path = new GraphicsPath();

            switch (Orientation)
            {
                case VisualOrientation.Top:
                    path.AddLine(rect.Left, rect.Bottom - 1, rect.Left, rect.Top + 2);
                    path.AddLine(rect.Left, rect.Top + 2, rect.Left + 2, rect.Top);
                    path.AddLine(rect.Left + 2, rect.Top, rect.Right - 3, rect.Top);
                    path.AddLine(rect.Right - 3, rect.Top, rect.Right - 1, rect.Top + 2);
                    path.AddLine(rect.Right - 1, rect.Top + 2, rect.Right - 1, rect.Bottom - 1);
                    path.AddLine(rect.Right - 1, rect.Bottom - 1, rect.Left, rect.Bottom - 1);
                    break;
                case VisualOrientation.Bottom:
                    path.AddLine(rect.Left, rect.Top, rect.Left, rect.Bottom - 3);
                    path.AddLine(rect.Left, rect.Bottom - 3, rect.Left + 2, rect.Bottom - 1);
                    path.AddLine(rect.Left + 2, rect.Bottom - 1, rect.Right - 3, rect.Bottom - 1);
                    path.AddLine(rect.Right - 3, rect.Bottom - 1, rect.Right - 1, rect.Bottom - 3);
                    path.AddLine(rect.Right - 1, rect.Bottom - 3, rect.Right - 1, rect.Top);
                    path.AddLine(rect.Right - 1, rect.Top, rect.Left, rect.Top);
                    break;
                case VisualOrientation.Left:
                    path.AddLine(rect.Right - 1, rect.Top, rect.Left + 2, rect.Top);
                    path.AddLine(rect.Left + 2, rect.Top, rect.Left, rect.Top + 2);
                    path.AddLine(rect.Left, rect.Top + 2, rect.Left, rect.Bottom - 3);
                    path.AddLine(rect.Left, rect.Bottom - 3, rect.Left + 2, rect.Bottom - 1);
                    path.AddLine(rect.Left + 2, rect.Bottom - 1, rect.Right - 1, rect.Bottom - 1);
                    path.AddLine(rect.Right - 1, rect.Bottom - 1, rect.Right - 1, rect.Top);
                    break;
                case VisualOrientation.Right:
                    path.AddLine(rect.Left, rect.Top, rect.Right - 3, rect.Top);
                    path.AddLine(rect.Right - 3, rect.Top, rect.Right - 1, rect.Top + 2);
                    path.AddLine(rect.Right - 1, rect.Top + 2, rect.Right - 1, rect.Bottom - 3);
                    path.AddLine(rect.Right - 1, rect.Bottom - 3, rect.Right - 3, rect.Bottom - 1);
                    path.AddLine(rect.Right - 3, rect.Bottom - 1, rect.Left, rect.Bottom - 1);
                    path.AddLine(rect.Left, rect.Bottom - 1, rect.Left, rect.Top);
                    break;
            }

            return path;
        }