例7-13.java

医院无线局域网设计方案 医院无线局域网设计方案

//example 7-13
import java.applet.Applet;
import java.awt.*;
public class tt extends Applet
{
   double data[]={23.5,56.7,33.5,77.8,33.0};
   Color color[]={Color.green,Color.blue,Color.yellow,Color.magenta,Color.orange};
   int degree[]=new int[5];
   public void init()
   {
   	  resize(300,150);
   	  double sum=0;
   	  for(int i=0;i<data.length;i++)
   	  {
   	  	sum+=data[i];
   	  }
   	  for(int i=0;i<data.length;i++)
   	  {
   	  	degree[i]=(int)(data[i]/sum*360+0.5);
   	  	System.out.println(""+data[i]+" "+degree[i]);
   	  }
   }
   public void paint(Graphics g)
   {
   	  int x0=60,y0=70,r=50,start=0;
      for(int i=0;i<data.length;i++)
      {
      	g.setColor(color[i]);
      	g.fillArc(x0-r,y0-r,2*r,2*r,start,degree[i]);
      	start+=degree[i];
      	System.out.println(""+degree[i]+" "+start);
      }
      g.setColor(Color.red);
      g.drawOval(x0-r,y0-r,2*r,2*r);
      for(int i=0;i<9;i++)
      {
      	g.fillArc(130,40,150,80,22+i*15,15);
      	i++;
      	if(i==9)break;
      	g.drawArc(130,40,150,80,22+i*15,15);
      }
   }
}