!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;

    }

  }

}