Function RecursivelyMaskGhost

Filters/HyperTree/vtkHyperTreeGridRemoveGhostCells.cxx:23–55

* Recursively process the tree to mask ghost cells. Return true if the current cell has been * masked (i.e. already masked in inMask, ghost in inGhost, or all children masked and/or ghost). */

 * masked (i.e. already masked in inMask, ghost in inGhost, or all children masked and/or ghost).
 */
bool RecursivelyMaskGhost(
  vtkHyperTreeGridNonOrientedCursor* cursor, vtkBitArray* inMask, vtkUnsignedCharArray* inGhost)
{
  vtkIdType currentId = cursor->GetGlobalNodeIndex();
  cursor->SetMask(false);

  if (inMask && inMask->GetValue(currentId))
  {
    cursor->SetMask(true);
    return true;
  }

  if (inGhost->GetTuple1(currentId))
  {
    cursor->SetMask(true);
    return true;
  }

  bool allGhostOrMasked = false;
  if (!cursor->IsLeaf())
  {
    for (int child = 0; child < cursor->GetNumberOfChildren(); ++child)
    {
      cursor->ToChild(child);
      // Coarse cell is masked if it contains only ghosts and/or masked children
      allGhostOrMasked = allGhostOrMasked && RecursivelyMaskGhost(cursor, inMask, inGhost);
      cursor->ToParent();
    }
  }

  cursor->SetMask(allGhostOrMasked);
  return allGhostOrMasked;
}
}

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