generalpath.java

本书结合作者丰富的实践经验和深厚的理论基础

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
public class generalPath extends JFrame {
 public generalPath (){
   super( "Drawing 2D Shapes" );
   setSize( 340, 340 );
   setVisible( true );
 }
 public void paint( Graphics g ) {
   super.paint( g );
   int xPoints[] ={ 55, 67, 109, 73, 83, 55, 27, 37, 1, 43 };
   int yPoints[] ={ 0, 36, 36, 54, 96, 72, 96, 54, 36, 36 };
   Graphics2D g2d = ( Graphics2D ) g;
   GeneralPath star = new GeneralPath();
   star.moveTo( xPoints[ 0 ], yPoints[ 0 ] );
   for ( int count = 1; count < xPoints.length; count++ )
     star.lineTo( xPoints[ count ], yPoints[ count ] );
   star.closePath();
   g2d.translate( 170, 170 );
   for ( int count = 1; count <= 20; count++ ) {
     g2d.rotate( Math.PI / 10.0 );
     g2d.setColor( new Color(( int ) ( Math.random() * 256 ),( int ) ( Math.random() * 256 ),( int ) ( Math.random() * 256 ) ) );
     g2d.fill( star );
   }
 } // end method paint
 public static void main( String args[] ){
   generalPath application = new generalPath ();
   application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
 }
}