C# 绘图--金刚石

C# 绘图--金刚石

杨贺宏

//-------------------------------------

// DrawDiamond.cs by Flycrane

//-------------------------------------

using System;

using System.Drawing;

using System.Windows.Forms;

 

class DrawDiamond : Form

{

   publicstaticvoidMain()

   {

     Application.Run( new DrawDiamond() );

   }

   public DrawDiamond()

   {

     Text= "金刚石图案-Flycrane";

     BackColor= Color.Black;

     ForeColor= Color.White;

     ResizeRedraw= true;

     Width= 400;

     Height= 400;

   }

  

   protectedoverridevoid OnPaint(PaintEventArgs e)

   {

     Graphics myGraphics= e.Graphics;

     Pen myPen= new Pen( ForeColor,2 );

    

     float radius= (float) ( Width/2.2 );

     constint partitionNum= 25;

     float angleUnit= (float) ( 2*Math.PI/partitionNum );

    

     float[] circleX= newfloat[partitionNum];

     float[] circleY= newfloat[partitionNum];

    

     // center of the circle.

     float originX=ClientSize.Width/2;

     float originY=ClientSize.Height/2;

    

     //store coordinates of the nodes on the circle verge.

     for ( int i=0;i<partitionNum;i++ )

     {

       circleX[i]= (float) ( radius*Math.Cos( i*angleUnit ) ) + originX;

       circleY[i]= (float) ( radius*Math.Sin( i*angleUnit ) ) + originY;

     }

    

     //link nodes on the circle verge.

     for ( int i=0;i<=partitionNum-2;i++ )

     {

       for ( int j=i+1;j<=partitionNum-1;j++ )

         myGraphics.DrawLine( myPen,circleX[i],circleY[i],circleX[j],circleY[j] );

     }

   }

}

参考文献:

1. Charles Petzold. Programming Microsoft Windows With C#.Microsoft Press. 2002.

2. 陆润民. C语言绘图教程.清华大学出版社. 1996年4月第一版.

 

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