import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;

public class PlasmaDemo extends JComponent { 

    /**
     * 
     */ 
    private static final long serialVersionUID = -2236160343614397287L; 
    private BufferedImage image = null; 
    private int size = 256;

    public PlasmaDemo() { 
        super(); 
        this.setOpaque(false); 
    } 

    protected void paintComponent(Graphics g) { 
        Graphics2D g2 = (Graphics2D)g; 
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 
        g2.drawImage(getImage(), 5, 5, image.getWidth(), image.getHeight(), null); 
    } 

    private BufferedImage getImage() { 
        if(image == null) { 
            image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB); 
            int[] rgbData = new int[size*size]; 
            generateNoiseImage(rgbData); 
            setRGB(image, 0, 0, size, size, rgbData);
            File outFile = new File("plasma.jpg");
            try {
                ImageIO.write(image, "jpg", outFile);
            } catch (IOException e) {
                e.printStackTrace();
            }
        } 
        return image; 
    } 

    public void generateNoiseImage(int[] rgbData) { 
        int index = 0; 
        int a = 255; 
        int r = 0; 
        int g = 0; 
        int b = 0; 

        for(int row=0; row<size; row++) { 
            for(int col=0; col<size; col++) { 
                // set random color value for each pixel 
                r = (int)(128.0 + (128.0 * Math.sin((row + col) / 8.0))); 
                g = (int)(128.0 + (128.0 * Math.sin((row + col) / 8.0))); 
                b = (int)(128.0 + (128.0 * Math.sin((row + col) / 8.0))); 

                rgbData[index] = ((clamp(a) & 0xff) << 24) | 
                                ((clamp(r) & 0xff) << 16)  | 
                                ((clamp(g) & 0xff) << 8)   | 
                                ((clamp(b) & 0xff)); 
                index++; 
            } 
        } 

    } 

    private int clamp(int rgb) { 
        if(rgb > 255) 
            return 255; 
        if(rgb < 0) 
            return 0; 
        return rgb; 
    }   

    public void setRGB( BufferedImage image, int x, int y, int width, int height, int[] pixels ) { 
        int type = image.getType(); 
        if ( type == BufferedImage.TYPE_INT_ARGB || type == BufferedImage.TYPE_INT_RGB ) 
            image.getRaster().setDataElements( x, y, width, height, pixels ); 
        else 
            image.setRGB( x, y, width, height, pixels, 0, width ); 
    } 

    public static void main(String[] args) { 
        JFrame frame = new JFrame("Noise Art Panel"); 
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        frame.getContentPane().setLayout(new BorderLayout()); 

        frame.getContentPane().add(new PlasmaDemo(), BorderLayout.CENTER); 
        frame.setPreferredSize(new Dimension(400 + 25,450)); 
       frame.pack(); 
       frame.setVisible(true); 
   } 
}