Method ProcessTrees

Filters/Sources/vtkHyperTreeGridSource.cxx:599–678

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
int vtkHyperTreeGridSource::ProcessTrees(vtkHyperTreeGrid*, vtkDataObject* outputDO)
{
  // Downcast output data object to hyper tree grid
  vtkHyperTreeGrid* output = vtkHyperTreeGrid::SafeDownCast(outputDO);
  if (!output)
  {
    vtkErrorMacro("Incorrect type of output: " << outputDO->GetClassName());
    return 0;
  }

  // Reset process counter
  this->CurrentTreeProcess = 0;

  // Iterate over all hyper trees
  vtkIdType nbTrees;
  if (this->LevelZeroMaterialIndex)
  {
    nbTrees = this->LevelZeroMaterialIndex->GetNumberOfValues();
  }
  else
  {
    nbTrees = output->GetMaxNumberOfTrees();
  }
  vtkNew<vtkHyperTreeGridNonOrientedCursor> cursor;
  vtkIdType offset = 0;
  for (vtkIdType itree = 0; itree < nbTrees; ++itree)
  {
    vtkIdType index = itree;

    if (this->LevelZeroMaterialIndex)
    {
      index = this->LevelZeroMaterialIndex->GetTuple1(itree);
    }

    unsigned int i, j, k;
    output->GetLevelZeroCoordinatesFromIndex(index, i, j, k);

    // Initialize cursor
    output->InitializeNonOrientedCursor(cursor, index, true);

    // Initialize local cell index
    int idx[3] = { 0, 0, 0 };

    if (this->UseDescriptor)
    {
      if (!this->DescriptorBits)
      {
        char currentChar = this->LevelDescriptors[0][index + offset];
        if (currentChar != 'R' && currentChar != '.')
        {
          this->CurrentTreeProcess = currentChar - '0';
          offset++;
          if (this->CurrentTreeProcess < 0 || this->CurrentTreeProcess > 9)
          {
            vtkErrorMacro("Unexpected level " << CurrentTreeProcess);
            return 0;
          }
        }