!752

!include #1004681 // Concepts

sS imageID = "#1002132";

static RGBImage image;
static ImageSurface imageSurface;
static Choice c; // Choice currently displayed

sclass Choice extends Concept {
  int x, y; // color values in RRGGBB
  S lua;
  bool[] mark;
}

p {
  loadConceptsFrom("#1004895");
  
  image = loadImage(imageID);
  int w = image.getWidth(), h = image.getHeight();
  
  c = conceptOfType(Choice.class);
  bool[] mark = cloneArray(c.mark);
  fillVertical(mark, w, h, 10);
  imageSurface = showImage(greenWhiteMarkedImage(image, mark));
}

static void fillVertical(bool[] mark, int w, int h, int fillh) {     
  for (int x = 0; x < w; x++) {
    for (int y = 0; y < h; y++) {
      if (!mark[y*w+x]) continue;
      while (y < h && mark[y*w+x]) ++y;
      int y2 = y+1;
      while (y2 < h && !mark[y2*w+x]) ++y2;
      if (y2 >= h) break;
      // y = first unset pixel, y2 = first set pixel
      int len = y2-y;
      if (len <= fillh)
        while (y < y2) mark[(y++)*w+x] = true;
      else
        y = y2;
      --y;
    }
  }
}