heart.java

初学者学习java

import java.awt.*;
import java.applet.Applet;
public class heart extends Applet
{
    public void paint(Graphics g)
    {
   
    	int x=0,y=0;
    	x=this.getWidth()/2;
    	y=this.getHeight()/2;
        int d=Math.min(this.getWidth()/2,this.getHeight()/2);
    	g.drawLine(x,0,x,y*2);
    	g.drawLine(0,y,x*2,y);	
        int r=d/5;
     	for(int m=1;m<d;m++)
    	{
    		double angle=m*Math.PI/d;
    		double radius=r*angle;
    	    int j=(int)(radius*Math.sin(angle));
    	    int i=(int)(radius*Math.cos(angle));
    		g.setColor(Color.black);
            g.drawOval(x-j,y-i,1,1);  
            g.drawOval(x+j,y-i,1,1);  	        
        }
    	
    }
}