Method MergeWith

deps/tesseract/textord/tabvector.cpp:458–486

Eat the other TabVector into this and delete it.

// Eat the other TabVector into this and delete it.
void TabVector::MergeWith(const ICOORD& vertical, TabVector* other) {
  extended_ymin_ = MIN(extended_ymin_, other->extended_ymin_);
  extended_ymax_ = MAX(extended_ymax_, other->extended_ymax_);
  if (other->IsRagged()) {
    alignment_ = other->alignment_;
  }
  // Merge sort the two lists of boxes.
  BLOBNBOX_C_IT it1(&boxes_);
  BLOBNBOX_C_IT it2(&other->boxes_);
  while (!it2.empty()) {
    BLOBNBOX* bbox2 = it2.extract();
    it2.forward();
    TBOX box2 = bbox2->bounding_box();
    BLOBNBOX* bbox1 = it1.data();
    TBOX box1 = bbox1->bounding_box();
    while (box1.bottom() < box2.bottom() && !it1.at_last()) {
      it1.forward();
      bbox1 = it1.data();
      box1 = bbox1->bounding_box();
    }
    if (box1.bottom() < box2.bottom()) {
      it1.add_to_end(bbox2);
    } else if (bbox1 != bbox2) {
      it1.add_before_stay_put(bbox2);
    }
  }
  Fit(vertical, true);
  other->Delete(this);
}

// Add a new element to the list of partner TabVectors.
// Partners must be added in order of increasing y coordinate of the text line