!752

static BWImage bw;
static ImageSurface imageSurface;
static Reproducer reproducer;

!include #1000522 // image helper functions

p {
  bw = loadBWImage("#1004541");
  imageSurface = showImage(bw.getBufferedImage());
  reproducer = new RandomSolid;
  reproduceOpenEnd(bw, imageSurface);
}

interface Reproducer {
  public S reproduce(BWImage original);
}

static class Solid extends Params {
  float col;
  
  Solid copy() {
    new Solid p;
    baseClone(p);
    p.col = col;
    return p;
  }
  
  public String toString() {
    return "Solid " + formatDouble(col, 2);
  }

  BWImage render() {
    int w = originalImage.getWidth(), h = originalImage.getHeight();
    return new BWImage(w, h, col);
  }
}

static class RandomSolid implements Reproducer {
  int n = -1;
  public S reproduce(BWImage original) {
    ++n;
    DynamicObject p = new DynamicObject("Solid");
    if (n % 2 == 0) {
      p.put("col", randomBrightness());
    } else {
      p.put("col", probeRandomPixel(original));
    }
    ret structure(p);
  }
}

static abstract class Params {
  BWImage originalImage;
  abstract BWImage render();
  abstract Params copy();
  
  void baseClone(Params p) {
    p.originalImage = originalImage;
  }
  
  BWImage rendered;
  BWImage getImage() {
    if (rendered == null)
      rendered = render();
    return rendered;
  }
  
  Double score;
  double getScore() {
    if (score == null)
      score = calcScore();
    return score;
  }
  
  double calcScore() {
    return 100*(1-diff(originalImage, getImage()));
  }
  
  boolean isBetterThan(Params p) {
    return getScore() > p.getScore();
  }
}

static S reproduce(BWImage original) {
  ret reproducer.reproduce(original);
}

static void reproduceOpenEnd(BWImage original, ImageSurface imageSurface) {
  S bestDesc = null;
  Params best = null;
  long lastPrint = 0, lastN = 0;
  for (long ntry = 1; ; ntry++) {
    ping();
    long now = now();
    if (now >= lastPrint+1000) {
      long tps = (ntry-lastN)*1000/(now-lastPrint);
      lastPrint = now;
      lastN = ntry;
      String s = "Try " + ntry + " (" + tps + "/s)";
      if (best == null)
        System.out.println(s);
      else {
        System.out.println("Best: " + bestDesc);
        System.out.println(s + ", score: " + formatDouble(best.getScore(), 2) + "%, structure size: " + structureSize(best, Params.class));
      }
    }
    S desc;
    try {
      desc = reproduce(original);
    } catch e {
      print("Production failed: " + exceptionToStringShort(e));
      continue;
    }
    Params p;
    try {
      p = makeParams(original, desc);
    } catch {
      print("Can't unstructure: " + desc);
      continue;
    }
    if (bestDesc == null || p != null && p.getScore() > best.getScore()) {
      //System.out.println("New best! " + p.getScore());
      bestDesc = desc;
      best = p;
      imageSurface.setImage(p.getImage().getBufferedImage());
    }
    
    if (p != null && p.getScore() >= 100.0)
      break;
  }
}

static Params makeParams(BWImage original, S desc) {
  Params p = cast unstructure(desc);
  p.originalImage = original;
  ret p;
}

Began life as a copy of #1004542