Method RecursivelyProcessTree3D

Filters/Hybrid/vtkAdaptiveDataSetSurfaceFilter.cxx:513–558

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//------------------------------------------------------------------------------
void vtkAdaptiveDataSetSurfaceFilter::RecursivelyProcessTree3D(
  vtkHyperTreeGridNonOrientedVonNeumannSuperCursorLight* cursor, int level)
{
  double* origin = cursor->GetOrigin();

  std::array<std::array<double, 3>, 8> corners = { {
    { { origin[0], origin[1], origin[2] } },
    { { origin[0], origin[1], origin[2] + cursor->GetSize()[2] } },
    { { origin[0] + cursor->GetSize()[0], origin[1], origin[2] } },
    { { origin[0] + cursor->GetSize()[0], origin[1], origin[2] + cursor->GetSize()[2] } },
    { { origin[0], origin[1] + cursor->GetSize()[1], origin[2] } },
    { { origin[0], origin[1] + cursor->GetSize()[1], origin[2] + cursor->GetSize()[2] } },
    { { origin[0] + cursor->GetSize()[0], origin[1] + cursor->GetSize()[1], origin[2] } },
    { { origin[0] + cursor->GetSize()[0], origin[1] + cursor->GetSize()[1],
      origin[2] + cursor->GetSize()[2] } },
  } };

  ShapeState shapeState = this->IsShapeVisible<8>(corners, level);
  if (shapeState == ShapeState::OUT_OF_SCREEN)
  {
    return;
  }

  // Create geometry output if cursor is at leaf
  if (cursor->IsLeaf() || shapeState == ShapeState::SUB_PIXEL ||
    (this->Mask && this->Mask->GetValue(cursor->GetGlobalNodeIndex())) ||
    (this->FixedLevelMax != -1 && level >= this->FixedLevelMax))
  {
    this->ProcessLeaf3D(cursor);
  }
  else
  {
    // Cursor is not at leaf, recurse to all children
    int numChildren = cursor->GetNumberOfChildren();
    for (int iChild = 0; iChild < numChildren; ++iChild)
    {
      if (this->CheckAbort())
      {
        break;
      }
      cursor->ToChild(iChild);
      this->RecursivelyProcessTree3D(cursor, level + 1);
      cursor->ToParent();
    }
  }
}

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void vtkAdaptiveDataSetSurfaceFilter::ProcessLeaf3D(