static BWImage bwResizeSmooth(BWImage img, int w) {
  ret new BWImage(scaleImage(img.getBufferedImage(), ((double) w)/img.getWidth()));
}

static BWImage bwResizeSmooth(BWImage img, int w, int h) {
  ret new BWImage(scaleImage(img.getBufferedImage(),
    ((double) w)/img.getWidth(),
    ((double) h)/img.getHeight()));
}

static BWImage bwResizeSmooth(int w, BWImage img) {
  ret bwResizeSmooth(img, w);
}

static BWImage bwResizeSmooth(int w, BufferedImage img) {
  ret new BWImage(scaleImage(img,
    ((double) w)/img.getWidth()));
}