sclass Image332 implements MakesBufferedImage {

  int w;

  byte[] pixels;

  *() {} // for persistence

  *(BufferedImage img) { this(RGBImage(img)); }

  *(RGBImage img) {

    w = img.getWidth();

    int h = img.getHeight();

    pixels = new byte[w*h];

    for y to h: for x to w:

      pixels[y*w+x] = to332(img.getInt(x, y));

  }

  public int getWidth() { ret w; }

  public int getHeight() { ret h(); }

  int h() {

    ret l(pixels)/w;

  }

  RGBImage toRGB() {

    int h = h();

    RGBImage img = new RGBImage(w, h);

    int i = 0;

    for y to h: for x to w:

      img.setPixel(x, y, from332(pixels[i++]));

    ret img;

  }

  public BufferedImage getBufferedImage() {

    ret toRGB().getBufferedImage();

  }

  // 0 to 255

  int get332Pixel(int x, int y) {

    ret ubyteToInt(pixels[y*w+x]);

  }

}