Make noise Image

Code tạo 1 Frame dạng noise như hiệu ứng noise image trong Photoshop.

Mã:

 
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.IndexColorModel;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.util.Random;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class Test extends JComponent implements Runnable {
  byte[] data;

  BufferedImage image;

  Random random;

  public void initialize() {
    int w = getSize().width, h = getSize().height;
    int length = ((w + 7) * h) / 8;
    data = new byte[length];
    DataBuffer db = new DataBufferByte(data, length);
    WritableRaster wr = Raster.createPackedRaster(db, w, h, 1, null);
    ColorModel cm = new IndexColorModel(1, 2, new byte[] { (byte) 0, (byte) 255 }, new byte[] {
        (byte) 0, (byte) 255 }, new byte[] { (byte) 0, (byte) 255 });
    image = new BufferedImage(cm, wr, false, null);
    random = new Random();
    new Thread(this).start();
  }

    @Override
  public void run() {
    while (true) {
      random.nextBytes(data);
      repaint();
      try {
        Thread.sleep(1000 / 24);
      } catch (InterruptedException e) { /* die */
      }
    }
  }

    @Override
  public void paint(Graphics g) {
    if (image == null)
      initialize();
    g.drawImage(image, 0, 0, this);
  }

  public static void main(String[] args) {
    JFrame f = new JFrame();
    f.add(new Test());
    f.setSize(300, 300);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
}
@Overrider do IDE netbean thêm vào, bạn có thể xóa đi nếu chạy trên IDE khác.

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