!7

static int width = 8, y1 = 3, y2 = 4;

p-exp {
  L<RGBImageAndRect> images = markedFaces_scaledToWidth(width);
  images = map(images, func(RGBImageAndRect r) -> RGBImageAndRect {
    rgbImageAndRect_clipLineRange(y1, y2, r)
  });
  showImage(mergeRGBImagesAndRects_scaledToWidth(images, 128));
  
  Recognizer recognizer = new {
    public Rect get(RGBImage img) {
      RGBImage img2 = rgbClipLineRange(img, y1, y2);
      float[] f = rgbImageColumnBrightnesses(img2);
      printStruct(f);
      int x = indexOfSmallestFloat(f);
      ret rectFromPoints(x-1, y1, x+1, y2);
    }
  };
  
  for (RGBImageAndRect i : images)
    print(i.rect + " - " + recognizer.get(i.image));
}

abstract sclass Recognizer extends F1<RGBImage, Rect> {}