!752

!include #1000522 // image helper functions

static RGBImage targetImg;

static S bestScript;

static double bestScore;

static ImageSurface imageSurface;

p {

  targetImg = new RGBImage(200, 200, Color.blue);

  while true {

    RGBImage img = new RGBImage(200, 200, Color.white);

    S scriptSchema = "fill(<color1>);";

    S script = makeScript(scriptSchema);

    //print ("Script: " + script);

    render(img, script);

    double score = diffToPercent(diff(img, targetImg));

    if (score > bestScore || (score == bestScore && l(script) < l(bestScript))) {

      bestScore = score;

      bestScript = script;

      print("New best score: " + score + ", script: " + script);

      imageSurface = showImage(img, imageSurface);

    }

  }

}

// assumes diff is between 0.0 (full score) and 1.0 (least score)

static double diffToPercent(double diff) {

  ret 100*(1-diff);

}

static S makeScript(S schema) {

  L<S> tok = javaTok(schema);

  int i = findCodeTokens(tok, "<", "color1", ">");

  if (i >= 0) {

    clearAllTokens(tok, i, i+5);

    tok.set(i, quote(randomColor().toString()));

    tok = javaTok(tok);

  }

  ret join(tok);

}

static void render(RGBImage img, S script) {

  L<S> tok = javaTok(script);

  new Matches m;

  for (L<S> s : statements(tok)) {

    if (jmatch("fill(*);", s, m)) {

      fill(img, m.unq(0));

    } else

      fail("unknown statement: " + join(s));

  }

}