<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_aqlea4gd4kov33407q7smoa3f7, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
persistable sclass G22PixelSplitMasks<A> is IG22OptimizedMasksHolder<MultiSet<A>> {
  replace Mask with IG22Mask<MultiSet<A>>.
  
  settable Pt splitPixel;
  settable IG22MasksHolder<MultiSet<A>> darkHolder;
  settable IG22MasksHolder<MultiSet<A>> brightHolder;
  
  public L<Mask> masks() {
    ret new ConcatOnDemandList(
      darkHolder.masks(),
      brightHolder.masks());
  }
  
  public L<IG22MasksHolder<MultiSet<A>>> subHolders() {
    ret ll(darkHolder, brightHolder);
  }
  
  public void transformSubHolders(IF1<IG22MasksHolder<MultiSet<A>>> f) {
    darkHolder = f.get(darkHolder);
    brightHolder = f.get(brightHolder);
  }
  
  @Override
  public PStackComputable<Void> findSimilarMasks(G22FindSimilarMasksTask<MultiSet<A>> task) {
    ret new FindSimilarMasks(task);
  }

  record noeq FindSimilarMasks(G22FindSimilarMasksTask task) extends PStackComputableWithStep<Void> is IMakeEmptyClone {
    bool brightBranch;
    
    public selfType makeEmptyClone() { ret new selfType; }
    
    void step(IPStack stack) {
      if (step == 0) {
        ++step;
        bool bright = isMaskBright(task.queryImage);
        printVars("step 0", +splitPixel, +bright);
        double bias = 0.9;
        stack.probabilisticOptions(this, ll(
          withProbability(bias,   self -> self.brightBranch = bright),
          withProbability(1-bias, self -> self.brightBranch = !bright)));
      } else {
        printVars("step 1", +splitPixel, +brightBranch);
        IG22MasksHolder<MultiSet<A>> branch = brightBranch ? brightHolder : darkHolder;
        stack.tailCall(branch.findSimilarMasks(task));
      }
    }
  }
  
  // Does the mask belong in darkHolder or brightHolder?
  bool isMaskBright(Image2B maskImage) {
    ret maskImage.getBoolPixel(splitPixel);
  }
  
  !include early #1035854 // Masks holder Include
}