using System;
using System.Drawing;
namespace Diagram {
public class Shapes {
public static void drawRoundRect(Graphics g, RectangleF rect, float radius, Pen pen, Brush brush) {
radius = Math.Min(radius, 0.5f*rect.Width);
radius = Math.Min(radius, 0.5f*rect.Height);
float d = 2f*radius;
g.FillPie(brush, rect.Left, rect.Top, d, d, -180f, 90f);
g.FillPie(brush, rect.Right-d, rect.Top, d, d, -90f, 90f);
g.FillPie(brush, rect.Right-d, rect.Bottom-d, d, d, 0f, 90f);
g.FillPie(brush, rect.Left, rect.Bottom-d, d, d, 90f, 90f);
g.FillRectangle(brush, rect.Left+radius, rect.Top, rect.Width-d, rect.Height);
g.FillRectangle(brush, rect.Left, rect.Top+radius, rect.Width, rect.Height-d);
g.DrawArc(pen, rect.Left, rect.Top, d, d, -180f, 90f);
g.DrawArc(pen, rect.Right-d, rect.Top, d, d, -90f, 90f);
g.DrawArc(pen, rect.Right-d, rect.Bottom-d, d, d, 0f, 90f);
g.DrawArc(pen, rect.Left, rect.Bottom-d, d, d, 90f, 90f);
g.DrawLine(pen, rect.Left+radius, rect.Top, rect.Right-radius, rect.Top);
g.DrawLine(pen, rect.Left+radius, rect.Bottom, rect.Right-radius, rect.Bottom);
g.DrawLine(pen, rect.Left, rect.Top+radius, rect.Left, rect.Bottom-radius);
g.DrawLine(pen, rect.Right, rect.Top+radius, rect.Right, rect.Bottom-radius);
}
}
}