作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站

C# 绘图--飘带

杨贺宏

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

// DrawStreamer.cs by Flycrane

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

using System;

using System.Drawing;

using System.Windows.Forms;

class DrawStreamer : Form

{

publicstaticvoidMain()

{

Application.Run( new DrawStreamer() );

}

public DrawStreamer()

{

Text= "飘带图案-Flycrane";

BackColor= Color.AliceBlue;

ForeColor= Color.Gold;

ResizeRedraw= true;

Width= 600;

Height= 350;

}

protectedoverridevoid OnPaint(PaintEventArgs e)

{

Graphics myGraphics= e.Graphics;

Pen myPen= new Pen( ForeColor,2 );

// center of the circle.

float originX=ClientSize.Width/2;

float originY=ClientSize.Height;

   float x1,x2,y1;

   // Draw streamer,which comprise series of horizontal line segment;

   for ( double a=0;a<=Math.PI ;a+=Math.PI/380 )

   {

     x1 =(float) ( 280*Math.Cos( 1.6*a ) +originX );

     y1 =(float) ( 479-( ( 90*Math.Sin( 8*a ) )*Math.Cos( a/2.5 )+originY ) );

     x2 =(float) ( 280*Math.Cos( 1.8*a )+originX );

     myGraphics.DrawLine ( myPen,x1,y1,x2,y1);

   }

}

}

效果图:

参考文献:

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

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