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static BufferedImage scaleBufferedImagePixelated(BufferedImage img, int w, int h) {
  int w1 = img.getWidth(), h1 = img.getHeight();
  int[] pixels1 = pixelsOfBufferedImage(img);
  int[] pixels = new[w*h];
  int i = 0;
  double y1 = 0, ystep = doubleRatio(h1, h), xstep = doubleRatio(w1, w);
  for y to h: {
    i1 = ifloor(y1)*w1;
    y1 += ystep;
    double x1 = 0;
    for x to w: {
      pixels[i++] = pixels1[i1+ifloor(x1)];
      x1 += xstep;
    }
  }
  ret intArrayToBufferedImage(pixels, w, h);
}