public void marble()
  {
    Noise noise = new Noise(framesize,framesize);
    if (mBufferedImage != null) {
        for (int i=0; i<mBufferedImage.getWidth();i++)
             for (int j=0;j<mBufferedImage.getHeight();j++)
             { 
                int color = marble1(noise, i, j);
                mBufferedImage.setRGB(i,j,color);
             }
    }
  }
  
  public int marble1(Noise noise, int u, int v)
    {
        
        double width = .25;// determines with of bands
        double d, dd, i;

        d =  u *width + 
            15*noise.linear(u/10., v/20.); // noise wiggles bands
        dd = ( (int) d) % 17;
        if ( dd < 4)
           i = .7  + 0.2*noise.linear(u/7.,v/5.); // add noise to lightest band
        else if ( dd < 9  || dd > 11) {
            d = Math.abs(d - ((int) (d/17))*17 - 10.5)*0.1538462;
            i = 0.4 + 
                0.3*d +  /* add gradient to middle value bands */ 
                0.2*noise.linear(u/10.,v/10.); /* add noise to middle value bands */ 
        }
        else
            i = 0.2 + 0.3*noise.linear(u/10.,v/5.);  // add noise to darkest band
        int r = (int) ( 0.4 * i * 255);
        int g = (int) ( 0.8 * i * 255);
        int b = (int) ( 0.6 * i * 255);
        return (new Color(r,g,b)).getRGB();
    }