form1.cs

这是《C#图形程序设计》这本书的源代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace 递归图形
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.PictureBox pictureBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		private System.Windows.Forms.Button button5;
		private System.Windows.Forms.Button button6;
		private System.Windows.Forms.Button button7;
		private System.Windows.Forms.Button button8;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.pictureBox1 = new System.Windows.Forms.PictureBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			this.button5 = new System.Windows.Forms.Button();
			this.button6 = new System.Windows.Forms.Button();
			this.button7 = new System.Windows.Forms.Button();
			this.button8 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// pictureBox1
			// 
			this.pictureBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.pictureBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(128)));
			this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.pictureBox1.Location = new System.Drawing.Point(24, 24);
			this.pictureBox1.Name = "pictureBox1";
			this.pictureBox1.Size = new System.Drawing.Size(456, 312);
			this.pictureBox1.TabIndex = 0;
			this.pictureBox1.TabStop = false;
			// 
			// button1
			// 
			this.button1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button1.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button1.ForeColor = System.Drawing.Color.ForestGreen;
			this.button1.Location = new System.Drawing.Point(56, 344);
			this.button1.Name = "button1";
			this.button1.TabIndex = 1;
			this.button1.Text = "递归多边形";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button2.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button2.ForeColor = System.Drawing.Color.ForestGreen;
			this.button2.Location = new System.Drawing.Point(160, 344);
			this.button2.Name = "button2";
			this.button2.TabIndex = 2;
			this.button2.Text = "递归圆";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button3.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button3.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button3.ForeColor = System.Drawing.Color.ForestGreen;
			this.button3.Location = new System.Drawing.Point(264, 344);
			this.button3.Name = "button3";
			this.button3.TabIndex = 3;
			this.button3.Text = "递归三角形";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button4
			// 
			this.button4.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button4.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button4.ForeColor = System.Drawing.Color.Green;
			this.button4.Location = new System.Drawing.Point(368, 344);
			this.button4.Name = "button4";
			this.button4.TabIndex = 4;
			this.button4.Text = "递归二叉树";
			this.button4.Click += new System.EventHandler(this.button4_Click);
			// 
			// button5
			// 
			this.button5.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button5.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button5.ForeColor = System.Drawing.Color.Green;
			this.button5.Location = new System.Drawing.Point(368, 384);
			this.button5.Name = "button5";
			this.button5.TabIndex = 8;
			this.button5.Text = "分形练习";
			this.button5.Click += new System.EventHandler(this.button5_Click);
			// 
			// button6
			// 
			this.button6.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button6.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button6.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button6.ForeColor = System.Drawing.Color.ForestGreen;
			this.button6.Location = new System.Drawing.Point(264, 384);
			this.button6.Name = "button6";
			this.button6.TabIndex = 7;
			this.button6.Text = "分形";
			this.button6.Click += new System.EventHandler(this.button6_Click);
			// 
			// button7
			// 
			this.button7.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button7.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button7.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button7.ForeColor = System.Drawing.Color.ForestGreen;
			this.button7.Location = new System.Drawing.Point(160, 384);
			this.button7.Name = "button7";
			this.button7.TabIndex = 6;
			this.button7.Text = "地毯练习";
			this.button7.Click += new System.EventHandler(this.button7_Click);
			// 
			// button8
			// 
			this.button8.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
			this.button8.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
			this.button8.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button8.ForeColor = System.Drawing.Color.ForestGreen;
			this.button8.Location = new System.Drawing.Point(56, 384);
			this.button8.Name = "button8";
			this.button8.TabIndex = 5;
			this.button8.Text = "地毯";
			this.button8.Click += new System.EventHandler(this.button8_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackColor = System.Drawing.Color.Teal;
			this.ClientSize = new System.Drawing.Size(504, 421);
			this.Controls.Add(this.button5);
			this.Controls.Add(this.button6);
			this.Controls.Add(this.button7);
			this.Controls.Add(this.button8);
			this.Controls.Add(this.button4);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.pictureBox1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			int n=3;
			int level;
			double size;
			double ratio;
			level=4;
			size=80f;
			ratio=0.4f;
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			Class1 ploy=new Class1();
			ploy.setdata(n);
			ploy.snow(g1,p1,250,220,n,level,size,ratio);
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			int n;
			float r,r1,c=40;
			double p=0.9f,f=0.2f;
			n=5;
			r1=(float)(0.5*479*(1-f)/(1-p));
			r=r1/c;
			Graphics g=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g.Clear(pictureBox1.BackColor);
			g.DrawEllipse(p1,150-r,130-r,2*r,2*r);
			Class2 yuan=new Class2();
			yuan.circles(g,p1,150,130,r,n+1);
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			int[] points=new int[10];
			int n;
			float xa,ya,xb,yb,xc,yc;
			n=7;
			xa=50.0f;ya=80.0f;
			xb=500f;yb=80.0f;
			xc=50f;yc=360.0f;
			g1.DrawLine(p1,xa,ya,xb,yb);
			Class3 zfx=new Class3();
			zfx.tria(g1,p1,xa,ya,xb,yb,xc,yc,n);
		}

		private void button4_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen pen1=new Pen(Color.Blue,3.0f);
			g1.Clear(pictureBox1.BackColor);
			int n;
			n=8;
			int ax,ay,bx,by;
			ax=0;
			bx=0;
			ay=-200;
			by=-100;
			Class4 ercha=new Class4();
			ercha.bintree(g1,pen1,ax,ay,bx,by,n);
		}

		private void button5_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			int i,n,k;
			float pi,theta,x,y,r,x1,y1,xc,yc,sizefactor,xmargin,phi;
			k=4;
			n=3;
			Class6 tigui=new Class6();
			sizefactor=1.0f;
			if(k<3)
			{
				xmargin=0.5f*(640-sizefactor*638);
				tigui.side(g1,p1,xmargin,240,639-xmargin,240,n);
			}
			else
			{
				xc=320;
				yc=240;
				r=0.9f*yc*sizefactor;
				pi=(float)(4*Math.Atan(1.0f));
				theta=2*pi/k;
				phi=-0.5f*theta;
				x1=(float)(320+r*Math.Cos(phi));
				y1=(float)(240+r*Math.Sin(phi));
				for(i=0;i<k;i++)
				{
					x=x1;
					y=y1;
					phi+=theta;
					x1=(float)(xc+r*Math.Cos(phi));
					y1=(float)(yc+r*Math.Sin(phi));
					tigui.side(g1,p1,x,y,x1,y1,n);
				}
			}
		}

		private void button6_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			int i,n,k;
			float pi,theta,x,y,r,x1,y1,xc,yc,sizefactor,xmargin,phi;
			k=4;
			n=5;
			Class6 tigui=new Class6();
			sizefactor=1.0f;
			if(k<3)
			{
				xmargin=0.5f*(640-sizefactor*638);
				tigui.side(g1,p1,xmargin,240,639-xmargin,240,n);
			}
			else
			{
				xc=320;
				yc=240;
				r=0.9f*yc*sizefactor;
				pi=(float)(4*Math.Atan(1.0f));
				theta=2*pi/k;
				phi=-0.5f*theta;
				x1=(float)(320+r*Math.Cos(phi));
				y1=(float)(240+r*Math.Sin(phi));
				for(i=0;i<k;i++)
				{
					x=x1;
					y=y1;
					phi+=theta;
					x1=(float)(xc+r*Math.Cos(phi));
					y1=(float)(yc+r*Math.Sin(phi));
					tigui.side(g1,p1,x,y,x1,y1,n);
				}
			}
		}

		private void button7_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			SolidBrush b1=new SolidBrush(Color.Yellow);
			Class5 dt=new Class5();
			dt.draw(g1,p1,b1,3);
		}

		private void button8_Click(object sender, System.EventArgs e)
		{
			Graphics g1=pictureBox1.CreateGraphics();
			Pen p1=new Pen(Color.Blue);
			g1.Clear(pictureBox1.BackColor);
			SolidBrush b1=new SolidBrush(Color.BlanchedAlmond);
			Class5 dt=new Class5();
			dt.draw(g1,p1,b1,4);
			
		}
	}
}