context.cs

苏金明编写的《用VB.NET和VC#.NET开发交互式CAD系统》一书的源代码

using System;
using System.Drawing;

namespace Strategy
{
	/// <summary>
	/// Context 的摘要说明。
	/// </summary>
	public class Context
	{
		DrawCircle drawer;

		public void SetCPCircle(CPCircle circle)
		{
			drawer = circle;
		}

		public void SetThreePCircle(ThreePCircle circle)
		{
			drawer = circle;
		}

		public void Draw(Graphics g)
		{
			drawer.Draw(g);
		}
	}
}