srecord noeq NonOverlappingRandomRects(int n, Rect full, int rw, int rh) {
  int maxFailures = 1000, failures;
  new L<Rect> out;
  
  run {
    double factor = doubleRatio(rw*rh*n, area(full));
    if (factor > 1) fail("Can't fit " + n2(n, "rectangle") + " in " + full);
    
    loop: while (l(out) < n && failures < maxFailures) {
      Rect rNew = randomRect(rw, rh, full);
      for (Rect r : out)
        if (rectsOverlap(r, rNew))
          { ++failures; continue loop; }
      out.add(rNew);
    }
  }
  
  L<Rect> get() { run(); ret out; }
}